* [PATCH v2 05/17] compat_ioctl: move more drivers to generic_compat_ioctl_ptrarg
@ 2018-09-12 15:08 ` Arnd Bergmann
0 siblings, 0 replies; 141+ messages in thread
From: Arnd Bergmann @ 2018-09-12 15:08 UTC (permalink / raw)
To: viro-RmSDqhL/yNMiFSDQTTA3OLVCufUGDwFn
Cc: linux-fbdev-u79uwXL29TY76Z2rM5mHXA,
linux-iio-u79uwXL29TY76Z2rM5mHXA,
linux-pci-u79uwXL29TY76Z2rM5mHXA,
linux-remoteproc-u79uwXL29TY76Z2rM5mHXA,
linux-nvme-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
platform-driver-x86-u79uwXL29TY76Z2rM5mHXA,
sparclinux-u79uwXL29TY76Z2rM5mHXA,
devel-gWbeCf7V1WCQmaza687I9mD2FQJk+8+b,
linux-scsi-u79uwXL29TY76Z2rM5mHXA,
linux-nvdimm-hn68Rpc1hR1g9hUCZPvPmw,
linux-rdma-u79uwXL29TY76Z2rM5mHXA,
qat-linux-ral2JQCrhuEAvxtiuMwx3w,
amd-gfx-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW,
linux-input-u79uwXL29TY76Z2rM5mHXA,
linux-media-u79uwXL29TY76Z2rM5mHXA, Arnd Bergmann,
linaro-mm-sig-cunTk1MwBs8s++Sfvej+rw,
dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW,
ceph-devel-u79uwXL29TY76Z2rM5mHXA, Greg Kroah-Hartman,
linux-usb-u79uwXL29TY76Z2rM5mHXA,
linux-wireless-u79uwXL29TY76Z2rM5mHXA,
linux-kernel-u79uwXL29TY76Z2rM5mHXA,
linux-crypto-u79uwXL29TY76Z2rM5mHXA,
netdev-u79uwXL29TY76Z2rM5mHXA,
linux-fsdevel-u79uwXL29TY76Z2rM5mHXA,
linuxppc-dev-uLR06cmDAlY/bJ5BZ2RsiQ, David S. Miller,
linux-btrfs-u79uwXL29TY76Z2rM5mHXA
The .ioctl and .compat_ioctl file operations have the same prototype so
they can both point to the same function, which works great almost all
the time when all the commands are compatible.
One exception is the s390 architecture, where a compat pointer is only
31 bit wide, and converting it into a 64-bit pointer requires calling
compat_ptr(). Most drivers here will ever run in s390, but since we now
have a generic helper for it, it's easy enough to use it consistently.
I double-checked all these drivers to ensure that all ioctl arguments
are used as pointers or are ignored, but are not interpreted as integer
values.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
drivers/android/binder.c | 2 +-
drivers/crypto/qat/qat_common/adf_ctl_drv.c | 2 +-
drivers/dma-buf/dma-buf.c | 4 +---
drivers/dma-buf/sw_sync.c | 2 +-
drivers/dma-buf/sync_file.c | 2 +-
drivers/gpu/drm/amd/amdkfd/kfd_chardev.c | 2 +-
drivers/hid/hidraw.c | 4 +---
drivers/iio/industrialio-core.c | 2 +-
drivers/infiniband/core/uverbs_main.c | 4 ++--
drivers/media/rc/lirc_dev.c | 4 +---
drivers/mfd/cros_ec_dev.c | 4 +---
drivers/misc/vmw_vmci/vmci_host.c | 2 +-
drivers/nvdimm/bus.c | 4 ++--
drivers/nvme/host/core.c | 2 +-
drivers/pci/switch/switchtec.c | 2 +-
drivers/platform/x86/wmi.c | 2 +-
drivers/rpmsg/rpmsg_char.c | 4 ++--
drivers/sbus/char/display7seg.c | 2 +-
drivers/sbus/char/envctrl.c | 4 +---
drivers/scsi/3w-xxxx.c | 4 +---
drivers/scsi/cxlflash/main.c | 2 +-
drivers/scsi/esas2r/esas2r_main.c | 2 +-
drivers/scsi/pmcraid.c | 4 +---
drivers/staging/android/ion/ion.c | 4 +---
drivers/staging/vme/devices/vme_user.c | 2 +-
drivers/tee/tee_core.c | 2 +-
drivers/usb/class/cdc-wdm.c | 2 +-
drivers/usb/class/usbtmc.c | 4 +---
drivers/video/fbdev/ps3fb.c | 2 +-
drivers/virt/fsl_hypervisor.c | 2 +-
fs/btrfs/super.c | 2 +-
fs/ceph/dir.c | 2 +-
fs/ceph/file.c | 2 +-
fs/fuse/dev.c | 2 +-
fs/notify/fanotify/fanotify_user.c | 2 +-
fs/userfaultfd.c | 2 +-
net/rfkill/core.c | 2 +-
37 files changed, 40 insertions(+), 58 deletions(-)
diff --git a/drivers/android/binder.c b/drivers/android/binder.c
index d58763b6b009..d2464f5759f8 100644
--- a/drivers/android/binder.c
+++ b/drivers/android/binder.c
@@ -5576,7 +5576,7 @@ static const struct file_operations binder_fops = {
.owner = THIS_MODULE,
.poll = binder_poll,
.unlocked_ioctl = binder_ioctl,
- .compat_ioctl = binder_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
.mmap = binder_mmap,
.open = binder_open,
.flush = binder_flush,
diff --git a/drivers/crypto/qat/qat_common/adf_ctl_drv.c b/drivers/crypto/qat/qat_common/adf_ctl_drv.c
index abc7a7f64d64..8ff77a70addc 100644
--- a/drivers/crypto/qat/qat_common/adf_ctl_drv.c
+++ b/drivers/crypto/qat/qat_common/adf_ctl_drv.c
@@ -68,7 +68,7 @@ static long adf_ctl_ioctl(struct file *fp, unsigned int cmd, unsigned long arg);
static const struct file_operations adf_ctl_ops = {
.owner = THIS_MODULE,
.unlocked_ioctl = adf_ctl_ioctl,
- .compat_ioctl = adf_ctl_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
};
struct adf_ctl_drv_info {
diff --git a/drivers/dma-buf/dma-buf.c b/drivers/dma-buf/dma-buf.c
index 13884474d158..a6d7dc4cf7e9 100644
--- a/drivers/dma-buf/dma-buf.c
+++ b/drivers/dma-buf/dma-buf.c
@@ -325,9 +325,7 @@ static const struct file_operations dma_buf_fops = {
.llseek = dma_buf_llseek,
.poll = dma_buf_poll,
.unlocked_ioctl = dma_buf_ioctl,
-#ifdef CONFIG_COMPAT
- .compat_ioctl = dma_buf_ioctl,
-#endif
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
};
/*
diff --git a/drivers/dma-buf/sw_sync.c b/drivers/dma-buf/sw_sync.c
index 53c1d6d36a64..bc810506d487 100644
--- a/drivers/dma-buf/sw_sync.c
+++ b/drivers/dma-buf/sw_sync.c
@@ -419,5 +419,5 @@ const struct file_operations sw_sync_debugfs_fops = {
.open = sw_sync_debugfs_open,
.release = sw_sync_debugfs_release,
.unlocked_ioctl = sw_sync_ioctl,
- .compat_ioctl = sw_sync_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
};
diff --git a/drivers/dma-buf/sync_file.c b/drivers/dma-buf/sync_file.c
index 35dd06479867..1c64ed60c658 100644
--- a/drivers/dma-buf/sync_file.c
+++ b/drivers/dma-buf/sync_file.c
@@ -488,5 +488,5 @@ static const struct file_operations sync_file_fops = {
.release = sync_file_release,
.poll = sync_file_poll,
.unlocked_ioctl = sync_file_ioctl,
- .compat_ioctl = sync_file_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
};
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
index 297b36c26a05..1d7b1e3c3ebe 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
@@ -47,7 +47,7 @@ static const char kfd_dev_name[] = "kfd";
static const struct file_operations kfd_fops = {
.owner = THIS_MODULE,
.unlocked_ioctl = kfd_ioctl,
- .compat_ioctl = kfd_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
.open = kfd_open,
.mmap = kfd_mmap,
};
diff --git a/drivers/hid/hidraw.c b/drivers/hid/hidraw.c
index 4a44e48e08b2..e44b64812850 100644
--- a/drivers/hid/hidraw.c
+++ b/drivers/hid/hidraw.c
@@ -476,9 +476,7 @@ static const struct file_operations hidraw_ops = {
.release = hidraw_release,
.unlocked_ioctl = hidraw_ioctl,
.fasync = hidraw_fasync,
-#ifdef CONFIG_COMPAT
- .compat_ioctl = hidraw_ioctl,
-#endif
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
.llseek = noop_llseek,
};
diff --git a/drivers/iio/industrialio-core.c b/drivers/iio/industrialio-core.c
index a062cfddc5af..22844b94b0e9 100644
--- a/drivers/iio/industrialio-core.c
+++ b/drivers/iio/industrialio-core.c
@@ -1630,7 +1630,7 @@ static const struct file_operations iio_buffer_fileops = {
.owner = THIS_MODULE,
.llseek = noop_llseek,
.unlocked_ioctl = iio_ioctl,
- .compat_ioctl = iio_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
};
static int iio_check_unique_scan_index(struct iio_dev *indio_dev)
diff --git a/drivers/infiniband/core/uverbs_main.c b/drivers/infiniband/core/uverbs_main.c
index 823beca448e1..f4755c1c9cfa 100644
--- a/drivers/infiniband/core/uverbs_main.c
+++ b/drivers/infiniband/core/uverbs_main.c
@@ -930,7 +930,7 @@ static const struct file_operations uverbs_fops = {
.release = ib_uverbs_close,
.llseek = no_llseek,
.unlocked_ioctl = ib_uverbs_ioctl,
- .compat_ioctl = ib_uverbs_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
};
static const struct file_operations uverbs_mmap_fops = {
@@ -941,7 +941,7 @@ static const struct file_operations uverbs_mmap_fops = {
.release = ib_uverbs_close,
.llseek = no_llseek,
.unlocked_ioctl = ib_uverbs_ioctl,
- .compat_ioctl = ib_uverbs_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
};
static struct ib_client uverbs_client = {
diff --git a/drivers/media/rc/lirc_dev.c b/drivers/media/rc/lirc_dev.c
index f862f1b7f996..077209f414ed 100644
--- a/drivers/media/rc/lirc_dev.c
+++ b/drivers/media/rc/lirc_dev.c
@@ -730,9 +730,7 @@ static const struct file_operations lirc_fops = {
.owner = THIS_MODULE,
.write = ir_lirc_transmit_ir,
.unlocked_ioctl = ir_lirc_ioctl,
-#ifdef CONFIG_COMPAT
- .compat_ioctl = ir_lirc_ioctl,
-#endif
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
.read = ir_lirc_read,
.poll = ir_lirc_poll,
.open = ir_lirc_open,
diff --git a/drivers/mfd/cros_ec_dev.c b/drivers/mfd/cros_ec_dev.c
index 999dac752bcc..35a04bcf55da 100644
--- a/drivers/mfd/cros_ec_dev.c
+++ b/drivers/mfd/cros_ec_dev.c
@@ -258,9 +258,7 @@ static const struct file_operations fops = {
.release = ec_device_release,
.read = ec_device_read,
.unlocked_ioctl = ec_device_ioctl,
-#ifdef CONFIG_COMPAT
- .compat_ioctl = ec_device_ioctl,
-#endif
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
};
static void cros_ec_sensors_register(struct cros_ec_dev *ec)
diff --git a/drivers/misc/vmw_vmci/vmci_host.c b/drivers/misc/vmw_vmci/vmci_host.c
index 83e0c95d20a4..1308f889e53b 100644
--- a/drivers/misc/vmw_vmci/vmci_host.c
+++ b/drivers/misc/vmw_vmci/vmci_host.c
@@ -983,7 +983,7 @@ static const struct file_operations vmuser_fops = {
.release = vmci_host_close,
.poll = vmci_host_poll,
.unlocked_ioctl = vmci_host_unlocked_ioctl,
- .compat_ioctl = vmci_host_unlocked_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
};
static struct miscdevice vmci_host_miscdev = {
diff --git a/drivers/nvdimm/bus.c b/drivers/nvdimm/bus.c
index 8aae6dcc839f..7449cbc55df7 100644
--- a/drivers/nvdimm/bus.c
+++ b/drivers/nvdimm/bus.c
@@ -1133,7 +1133,7 @@ static const struct file_operations nvdimm_bus_fops = {
.owner = THIS_MODULE,
.open = nd_open,
.unlocked_ioctl = nd_ioctl,
- .compat_ioctl = nd_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
.llseek = noop_llseek,
};
@@ -1141,7 +1141,7 @@ static const struct file_operations nvdimm_fops = {
.owner = THIS_MODULE,
.open = nd_open,
.unlocked_ioctl = nvdimm_ioctl,
- .compat_ioctl = nvdimm_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
.llseek = noop_llseek,
};
diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
index dd8ec1dd9219..2d986f573a29 100644
--- a/drivers/nvme/host/core.c
+++ b/drivers/nvme/host/core.c
@@ -2579,7 +2579,7 @@ static const struct file_operations nvme_dev_fops = {
.owner = THIS_MODULE,
.open = nvme_dev_open,
.unlocked_ioctl = nvme_dev_ioctl,
- .compat_ioctl = nvme_dev_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
};
static ssize_t nvme_sysfs_reset(struct device *dev,
diff --git a/drivers/pci/switch/switchtec.c b/drivers/pci/switch/switchtec.c
index 9940cc70f38b..4296919c784e 100644
--- a/drivers/pci/switch/switchtec.c
+++ b/drivers/pci/switch/switchtec.c
@@ -967,7 +967,7 @@ static const struct file_operations switchtec_fops = {
.read = switchtec_dev_read,
.poll = switchtec_dev_poll,
.unlocked_ioctl = switchtec_dev_ioctl,
- .compat_ioctl = switchtec_dev_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
};
static void link_event_work(struct work_struct *work)
diff --git a/drivers/platform/x86/wmi.c b/drivers/platform/x86/wmi.c
index 04791ea5d97b..e4d0697e07d6 100644
--- a/drivers/platform/x86/wmi.c
+++ b/drivers/platform/x86/wmi.c
@@ -886,7 +886,7 @@ static const struct file_operations wmi_fops = {
.read = wmi_char_read,
.open = wmi_char_open,
.unlocked_ioctl = wmi_ioctl,
- .compat_ioctl = wmi_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
};
static int wmi_dev_probe(struct device *dev)
diff --git a/drivers/rpmsg/rpmsg_char.c b/drivers/rpmsg/rpmsg_char.c
index a76b963a7e50..02aefb2b2d47 100644
--- a/drivers/rpmsg/rpmsg_char.c
+++ b/drivers/rpmsg/rpmsg_char.c
@@ -285,7 +285,7 @@ static const struct file_operations rpmsg_eptdev_fops = {
.write = rpmsg_eptdev_write,
.poll = rpmsg_eptdev_poll,
.unlocked_ioctl = rpmsg_eptdev_ioctl,
- .compat_ioctl = rpmsg_eptdev_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
};
static ssize_t name_show(struct device *dev, struct device_attribute *attr,
@@ -446,7 +446,7 @@ static const struct file_operations rpmsg_ctrldev_fops = {
.open = rpmsg_ctrldev_open,
.release = rpmsg_ctrldev_release,
.unlocked_ioctl = rpmsg_ctrldev_ioctl,
- .compat_ioctl = rpmsg_ctrldev_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
};
static void rpmsg_ctrldev_release_device(struct device *dev)
diff --git a/drivers/sbus/char/display7seg.c b/drivers/sbus/char/display7seg.c
index 5c8ed7350a04..064fe7247eb2 100644
--- a/drivers/sbus/char/display7seg.c
+++ b/drivers/sbus/char/display7seg.c
@@ -155,7 +155,7 @@ static long d7s_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
static const struct file_operations d7s_fops = {
.owner = THIS_MODULE,
.unlocked_ioctl = d7s_ioctl,
- .compat_ioctl = d7s_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
.open = d7s_open,
.release = d7s_release,
.llseek = noop_llseek,
diff --git a/drivers/sbus/char/envctrl.c b/drivers/sbus/char/envctrl.c
index 56e962a01493..a26665ccea56 100644
--- a/drivers/sbus/char/envctrl.c
+++ b/drivers/sbus/char/envctrl.c
@@ -714,9 +714,7 @@ static const struct file_operations envctrl_fops = {
.owner = THIS_MODULE,
.read = envctrl_read,
.unlocked_ioctl = envctrl_ioctl,
-#ifdef CONFIG_COMPAT
- .compat_ioctl = envctrl_ioctl,
-#endif
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
.open = envctrl_open,
.release = envctrl_release,
.llseek = noop_llseek,
diff --git a/drivers/scsi/3w-xxxx.c b/drivers/scsi/3w-xxxx.c
index 471366945bd4..86c9f22a152f 100644
--- a/drivers/scsi/3w-xxxx.c
+++ b/drivers/scsi/3w-xxxx.c
@@ -1047,9 +1047,7 @@ static int tw_chrdev_open(struct inode *inode, struct file *file)
static const struct file_operations tw_fops = {
.owner = THIS_MODULE,
.unlocked_ioctl = tw_chrdev_ioctl,
-#ifdef CONFIG_COMPAT
- .compat_ioctl = tw_chrdev_ioctl,
-#endif
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
.open = tw_chrdev_open,
.release = NULL,
.llseek = noop_llseek,
diff --git a/drivers/scsi/cxlflash/main.c b/drivers/scsi/cxlflash/main.c
index 6637116529aa..d968efeb50e8 100644
--- a/drivers/scsi/cxlflash/main.c
+++ b/drivers/scsi/cxlflash/main.c
@@ -3596,7 +3596,7 @@ static const struct file_operations cxlflash_chr_fops = {
.owner = THIS_MODULE,
.open = cxlflash_chr_open,
.unlocked_ioctl = cxlflash_chr_ioctl,
- .compat_ioctl = cxlflash_chr_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
};
/**
diff --git a/drivers/scsi/esas2r/esas2r_main.c b/drivers/scsi/esas2r/esas2r_main.c
index c07118617d89..95142292e702 100644
--- a/drivers/scsi/esas2r/esas2r_main.c
+++ b/drivers/scsi/esas2r/esas2r_main.c
@@ -614,7 +614,7 @@ static int __init esas2r_init(void)
/* Handle ioctl calls to "/proc/scsi/esas2r/ATTOnode" */
static const struct file_operations esas2r_proc_fops = {
- .compat_ioctl = esas2r_proc_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
.unlocked_ioctl = esas2r_proc_ioctl,
};
diff --git a/drivers/scsi/pmcraid.c b/drivers/scsi/pmcraid.c
index 4e86994e10e8..8a8c73d3bdad 100644
--- a/drivers/scsi/pmcraid.c
+++ b/drivers/scsi/pmcraid.c
@@ -3999,9 +3999,7 @@ static const struct file_operations pmcraid_fops = {
.open = pmcraid_chr_open,
.fasync = pmcraid_chr_fasync,
.unlocked_ioctl = pmcraid_chr_ioctl,
-#ifdef CONFIG_COMPAT
- .compat_ioctl = pmcraid_chr_ioctl,
-#endif
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
.llseek = noop_llseek,
};
diff --git a/drivers/staging/android/ion/ion.c b/drivers/staging/android/ion/ion.c
index 99073325b0c0..ef727c235392 100644
--- a/drivers/staging/android/ion/ion.c
+++ b/drivers/staging/android/ion/ion.c
@@ -484,9 +484,7 @@ int ion_query_heaps(struct ion_heap_query *query)
static const struct file_operations ion_fops = {
.owner = THIS_MODULE,
.unlocked_ioctl = ion_ioctl,
-#ifdef CONFIG_COMPAT
- .compat_ioctl = ion_ioctl,
-#endif
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
};
static int debug_shrink_set(void *data, u64 val)
diff --git a/drivers/staging/vme/devices/vme_user.c b/drivers/staging/vme/devices/vme_user.c
index 6a33aaa1a49f..568700ffd2f2 100644
--- a/drivers/staging/vme/devices/vme_user.c
+++ b/drivers/staging/vme/devices/vme_user.c
@@ -494,7 +494,7 @@ static const struct file_operations vme_user_fops = {
.write = vme_user_write,
.llseek = vme_user_llseek,
.unlocked_ioctl = vme_user_unlocked_ioctl,
- .compat_ioctl = vme_user_unlocked_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
.mmap = vme_user_mmap,
};
diff --git a/drivers/tee/tee_core.c b/drivers/tee/tee_core.c
index dd46b758852a..cb79f28be894 100644
--- a/drivers/tee/tee_core.c
+++ b/drivers/tee/tee_core.c
@@ -670,7 +670,7 @@ static const struct file_operations tee_fops = {
.open = tee_open,
.release = tee_release,
.unlocked_ioctl = tee_ioctl,
- .compat_ioctl = tee_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
};
static void tee_release_device(struct device *dev)
diff --git a/drivers/usb/class/cdc-wdm.c b/drivers/usb/class/cdc-wdm.c
index bec581fb7c63..6e4998c8e64f 100644
--- a/drivers/usb/class/cdc-wdm.c
+++ b/drivers/usb/class/cdc-wdm.c
@@ -724,7 +724,7 @@ static const struct file_operations wdm_fops = {
.release = wdm_release,
.poll = wdm_poll,
.unlocked_ioctl = wdm_ioctl,
- .compat_ioctl = wdm_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
.llseek = noop_llseek,
};
diff --git a/drivers/usb/class/usbtmc.c b/drivers/usb/class/usbtmc.c
index 83ffa5a14c3d..d5da47c4c462 100644
--- a/drivers/usb/class/usbtmc.c
+++ b/drivers/usb/class/usbtmc.c
@@ -1460,9 +1460,7 @@ static const struct file_operations fops = {
.open = usbtmc_open,
.release = usbtmc_release,
.unlocked_ioctl = usbtmc_ioctl,
-#ifdef CONFIG_COMPAT
- .compat_ioctl = usbtmc_ioctl,
-#endif
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
.fasync = usbtmc_fasync,
.poll = usbtmc_poll,
.llseek = default_llseek,
diff --git a/drivers/video/fbdev/ps3fb.c b/drivers/video/fbdev/ps3fb.c
index 5ed2db39d823..f9f8ffaf1c4a 100644
--- a/drivers/video/fbdev/ps3fb.c
+++ b/drivers/video/fbdev/ps3fb.c
@@ -949,7 +949,7 @@ static struct fb_ops ps3fb_ops = {
.fb_mmap = ps3fb_mmap,
.fb_blank = ps3fb_blank,
.fb_ioctl = ps3fb_ioctl,
- .fb_compat_ioctl = ps3fb_ioctl
+ .fb_compat_ioctl = generic_compat_ioctl_ptrarg,
};
static const struct fb_fix_screeninfo ps3fb_fix = {
diff --git a/drivers/virt/fsl_hypervisor.c b/drivers/virt/fsl_hypervisor.c
index 8ba726e600e9..406b7e492214 100644
--- a/drivers/virt/fsl_hypervisor.c
+++ b/drivers/virt/fsl_hypervisor.c
@@ -703,7 +703,7 @@ static const struct file_operations fsl_hv_fops = {
.poll = fsl_hv_poll,
.read = fsl_hv_read,
.unlocked_ioctl = fsl_hv_ioctl,
- .compat_ioctl = fsl_hv_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
};
static struct miscdevice fsl_hv_misc_dev = {
diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index 6601c9aa5e35..2b5a8ad86305 100644
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -2352,7 +2352,7 @@ static const struct super_operations btrfs_super_ops = {
static const struct file_operations btrfs_ctl_fops = {
.open = btrfs_control_open,
.unlocked_ioctl = btrfs_control_ioctl,
- .compat_ioctl = btrfs_control_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
.owner = THIS_MODULE,
.llseek = noop_llseek,
};
diff --git a/fs/ceph/dir.c b/fs/ceph/dir.c
index da73f29d7faa..eb869fe6774d 100644
--- a/fs/ceph/dir.c
+++ b/fs/ceph/dir.c
@@ -1489,7 +1489,7 @@ const struct file_operations ceph_dir_fops = {
.open = ceph_open,
.release = ceph_release,
.unlocked_ioctl = ceph_ioctl,
- .compat_ioctl = ceph_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
.fsync = ceph_fsync,
.lock = ceph_lock,
.flock = ceph_flock,
diff --git a/fs/ceph/file.c b/fs/ceph/file.c
index 92ab20433682..85094042cfac 100644
--- a/fs/ceph/file.c
+++ b/fs/ceph/file.c
@@ -1842,7 +1842,7 @@ const struct file_operations ceph_file_fops = {
.splice_read = generic_file_splice_read,
.splice_write = iter_file_splice_write,
.unlocked_ioctl = ceph_ioctl,
- .compat_ioctl = ceph_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
.fallocate = ceph_fallocate,
};
diff --git a/fs/fuse/dev.c b/fs/fuse/dev.c
index 11ea2c4a38ab..a6d4a24963ed 100644
--- a/fs/fuse/dev.c
+++ b/fs/fuse/dev.c
@@ -2258,7 +2258,7 @@ const struct file_operations fuse_dev_operations = {
.release = fuse_dev_release,
.fasync = fuse_dev_fasync,
.unlocked_ioctl = fuse_dev_ioctl,
- .compat_ioctl = fuse_dev_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
};
EXPORT_SYMBOL_GPL(fuse_dev_operations);
diff --git a/fs/notify/fanotify/fanotify_user.c b/fs/notify/fanotify/fanotify_user.c
index 69054886915b..fc4193b384cf 100644
--- a/fs/notify/fanotify/fanotify_user.c
+++ b/fs/notify/fanotify/fanotify_user.c
@@ -447,7 +447,7 @@ static const struct file_operations fanotify_fops = {
.fasync = NULL,
.release = fanotify_release,
.unlocked_ioctl = fanotify_ioctl,
- .compat_ioctl = fanotify_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
.llseek = noop_llseek,
};
diff --git a/fs/userfaultfd.c b/fs/userfaultfd.c
index bfa0ec69f924..bc9118b58a8a 100644
--- a/fs/userfaultfd.c
+++ b/fs/userfaultfd.c
@@ -1878,7 +1878,7 @@ static const struct file_operations userfaultfd_fops = {
.poll = userfaultfd_poll,
.read = userfaultfd_read,
.unlocked_ioctl = userfaultfd_ioctl,
- .compat_ioctl = userfaultfd_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
.llseek = noop_llseek,
};
diff --git a/net/rfkill/core.c b/net/rfkill/core.c
index 1355f5ca8d22..ba68b53f58ab 100644
--- a/net/rfkill/core.c
+++ b/net/rfkill/core.c
@@ -1323,7 +1323,7 @@ static const struct file_operations rfkill_fops = {
.release = rfkill_fop_release,
#ifdef CONFIG_RFKILL_INPUT
.unlocked_ioctl = rfkill_fop_ioctl,
- .compat_ioctl = rfkill_fop_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
#endif
.llseek = no_llseek,
};
--
2.18.0
^ permalink raw reply related [flat|nested] 141+ messages in thread
* [v2,05/17] compat_ioctl: move more drivers to generic_compat_ioctl_ptrarg
@ 2018-09-12 15:08 ` Arnd Bergmann
0 siblings, 0 replies; 141+ messages in thread
From: Arnd Bergmann @ 2018-09-12 15:08 UTC (permalink / raw)
To: viro
Cc: linux-fsdevel, Arnd Bergmann, Greg Kroah-Hartman,
David S. Miller, devel, linux-kernel, qat-linux, linux-crypto,
linux-media, dri-devel, linaro-mm-sig, amd-gfx, linux-input,
linux-iio, linux-rdma, linux-nvdimm, linux-nvme, linux-pci,
platform-driver-x86, linux-remoteproc, sparclinux, linux-scsi,
linux-usb, linux-fbdev, linuxppc-dev, linux-btrfs, ceph-devel,
linux-wireless, netdev
The .ioctl and .compat_ioctl file operations have the same prototype so
they can both point to the same function, which works great almost all
the time when all the commands are compatible.
One exception is the s390 architecture, where a compat pointer is only
31 bit wide, and converting it into a 64-bit pointer requires calling
compat_ptr(). Most drivers here will ever run in s390, but since we now
have a generic helper for it, it's easy enough to use it consistently.
I double-checked all these drivers to ensure that all ioctl arguments
are used as pointers or are ignored, but are not interpreted as integer
values.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
drivers/android/binder.c | 2 +-
drivers/crypto/qat/qat_common/adf_ctl_drv.c | 2 +-
drivers/dma-buf/dma-buf.c | 4 +---
drivers/dma-buf/sw_sync.c | 2 +-
drivers/dma-buf/sync_file.c | 2 +-
drivers/gpu/drm/amd/amdkfd/kfd_chardev.c | 2 +-
drivers/hid/hidraw.c | 4 +---
drivers/iio/industrialio-core.c | 2 +-
drivers/infiniband/core/uverbs_main.c | 4 ++--
drivers/media/rc/lirc_dev.c | 4 +---
drivers/mfd/cros_ec_dev.c | 4 +---
drivers/misc/vmw_vmci/vmci_host.c | 2 +-
drivers/nvdimm/bus.c | 4 ++--
drivers/nvme/host/core.c | 2 +-
drivers/pci/switch/switchtec.c | 2 +-
drivers/platform/x86/wmi.c | 2 +-
drivers/rpmsg/rpmsg_char.c | 4 ++--
drivers/sbus/char/display7seg.c | 2 +-
drivers/sbus/char/envctrl.c | 4 +---
drivers/scsi/3w-xxxx.c | 4 +---
drivers/scsi/cxlflash/main.c | 2 +-
drivers/scsi/esas2r/esas2r_main.c | 2 +-
drivers/scsi/pmcraid.c | 4 +---
drivers/staging/android/ion/ion.c | 4 +---
drivers/staging/vme/devices/vme_user.c | 2 +-
drivers/tee/tee_core.c | 2 +-
drivers/usb/class/cdc-wdm.c | 2 +-
drivers/usb/class/usbtmc.c | 4 +---
drivers/video/fbdev/ps3fb.c | 2 +-
drivers/virt/fsl_hypervisor.c | 2 +-
fs/btrfs/super.c | 2 +-
fs/ceph/dir.c | 2 +-
fs/ceph/file.c | 2 +-
fs/fuse/dev.c | 2 +-
fs/notify/fanotify/fanotify_user.c | 2 +-
fs/userfaultfd.c | 2 +-
net/rfkill/core.c | 2 +-
37 files changed, 40 insertions(+), 58 deletions(-)
diff --git a/drivers/android/binder.c b/drivers/android/binder.c
index d58763b6b009..d2464f5759f8 100644
--- a/drivers/android/binder.c
+++ b/drivers/android/binder.c
@@ -5576,7 +5576,7 @@ static const struct file_operations binder_fops = {
.owner = THIS_MODULE,
.poll = binder_poll,
.unlocked_ioctl = binder_ioctl,
- .compat_ioctl = binder_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
.mmap = binder_mmap,
.open = binder_open,
.flush = binder_flush,
diff --git a/drivers/crypto/qat/qat_common/adf_ctl_drv.c b/drivers/crypto/qat/qat_common/adf_ctl_drv.c
index abc7a7f64d64..8ff77a70addc 100644
--- a/drivers/crypto/qat/qat_common/adf_ctl_drv.c
+++ b/drivers/crypto/qat/qat_common/adf_ctl_drv.c
@@ -68,7 +68,7 @@ static long adf_ctl_ioctl(struct file *fp, unsigned int cmd, unsigned long arg);
static const struct file_operations adf_ctl_ops = {
.owner = THIS_MODULE,
.unlocked_ioctl = adf_ctl_ioctl,
- .compat_ioctl = adf_ctl_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
};
struct adf_ctl_drv_info {
diff --git a/drivers/dma-buf/dma-buf.c b/drivers/dma-buf/dma-buf.c
index 13884474d158..a6d7dc4cf7e9 100644
--- a/drivers/dma-buf/dma-buf.c
+++ b/drivers/dma-buf/dma-buf.c
@@ -325,9 +325,7 @@ static const struct file_operations dma_buf_fops = {
.llseek = dma_buf_llseek,
.poll = dma_buf_poll,
.unlocked_ioctl = dma_buf_ioctl,
-#ifdef CONFIG_COMPAT
- .compat_ioctl = dma_buf_ioctl,
-#endif
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
};
/*
diff --git a/drivers/dma-buf/sw_sync.c b/drivers/dma-buf/sw_sync.c
index 53c1d6d36a64..bc810506d487 100644
--- a/drivers/dma-buf/sw_sync.c
+++ b/drivers/dma-buf/sw_sync.c
@@ -419,5 +419,5 @@ const struct file_operations sw_sync_debugfs_fops = {
.open = sw_sync_debugfs_open,
.release = sw_sync_debugfs_release,
.unlocked_ioctl = sw_sync_ioctl,
- .compat_ioctl = sw_sync_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
};
diff --git a/drivers/dma-buf/sync_file.c b/drivers/dma-buf/sync_file.c
index 35dd06479867..1c64ed60c658 100644
--- a/drivers/dma-buf/sync_file.c
+++ b/drivers/dma-buf/sync_file.c
@@ -488,5 +488,5 @@ static const struct file_operations sync_file_fops = {
.release = sync_file_release,
.poll = sync_file_poll,
.unlocked_ioctl = sync_file_ioctl,
- .compat_ioctl = sync_file_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
};
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
index 297b36c26a05..1d7b1e3c3ebe 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
@@ -47,7 +47,7 @@ static const char kfd_dev_name[] = "kfd";
static const struct file_operations kfd_fops = {
.owner = THIS_MODULE,
.unlocked_ioctl = kfd_ioctl,
- .compat_ioctl = kfd_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
.open = kfd_open,
.mmap = kfd_mmap,
};
diff --git a/drivers/hid/hidraw.c b/drivers/hid/hidraw.c
index 4a44e48e08b2..e44b64812850 100644
--- a/drivers/hid/hidraw.c
+++ b/drivers/hid/hidraw.c
@@ -476,9 +476,7 @@ static const struct file_operations hidraw_ops = {
.release = hidraw_release,
.unlocked_ioctl = hidraw_ioctl,
.fasync = hidraw_fasync,
-#ifdef CONFIG_COMPAT
- .compat_ioctl = hidraw_ioctl,
-#endif
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
.llseek = noop_llseek,
};
diff --git a/drivers/iio/industrialio-core.c b/drivers/iio/industrialio-core.c
index a062cfddc5af..22844b94b0e9 100644
--- a/drivers/iio/industrialio-core.c
+++ b/drivers/iio/industrialio-core.c
@@ -1630,7 +1630,7 @@ static const struct file_operations iio_buffer_fileops = {
.owner = THIS_MODULE,
.llseek = noop_llseek,
.unlocked_ioctl = iio_ioctl,
- .compat_ioctl = iio_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
};
static int iio_check_unique_scan_index(struct iio_dev *indio_dev)
diff --git a/drivers/infiniband/core/uverbs_main.c b/drivers/infiniband/core/uverbs_main.c
index 823beca448e1..f4755c1c9cfa 100644
--- a/drivers/infiniband/core/uverbs_main.c
+++ b/drivers/infiniband/core/uverbs_main.c
@@ -930,7 +930,7 @@ static const struct file_operations uverbs_fops = {
.release = ib_uverbs_close,
.llseek = no_llseek,
.unlocked_ioctl = ib_uverbs_ioctl,
- .compat_ioctl = ib_uverbs_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
};
static const struct file_operations uverbs_mmap_fops = {
@@ -941,7 +941,7 @@ static const struct file_operations uverbs_mmap_fops = {
.release = ib_uverbs_close,
.llseek = no_llseek,
.unlocked_ioctl = ib_uverbs_ioctl,
- .compat_ioctl = ib_uverbs_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
};
static struct ib_client uverbs_client = {
diff --git a/drivers/media/rc/lirc_dev.c b/drivers/media/rc/lirc_dev.c
index f862f1b7f996..077209f414ed 100644
--- a/drivers/media/rc/lirc_dev.c
+++ b/drivers/media/rc/lirc_dev.c
@@ -730,9 +730,7 @@ static const struct file_operations lirc_fops = {
.owner = THIS_MODULE,
.write = ir_lirc_transmit_ir,
.unlocked_ioctl = ir_lirc_ioctl,
-#ifdef CONFIG_COMPAT
- .compat_ioctl = ir_lirc_ioctl,
-#endif
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
.read = ir_lirc_read,
.poll = ir_lirc_poll,
.open = ir_lirc_open,
diff --git a/drivers/mfd/cros_ec_dev.c b/drivers/mfd/cros_ec_dev.c
index 999dac752bcc..35a04bcf55da 100644
--- a/drivers/mfd/cros_ec_dev.c
+++ b/drivers/mfd/cros_ec_dev.c
@@ -258,9 +258,7 @@ static const struct file_operations fops = {
.release = ec_device_release,
.read = ec_device_read,
.unlocked_ioctl = ec_device_ioctl,
-#ifdef CONFIG_COMPAT
- .compat_ioctl = ec_device_ioctl,
-#endif
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
};
static void cros_ec_sensors_register(struct cros_ec_dev *ec)
diff --git a/drivers/misc/vmw_vmci/vmci_host.c b/drivers/misc/vmw_vmci/vmci_host.c
index 83e0c95d20a4..1308f889e53b 100644
--- a/drivers/misc/vmw_vmci/vmci_host.c
+++ b/drivers/misc/vmw_vmci/vmci_host.c
@@ -983,7 +983,7 @@ static const struct file_operations vmuser_fops = {
.release = vmci_host_close,
.poll = vmci_host_poll,
.unlocked_ioctl = vmci_host_unlocked_ioctl,
- .compat_ioctl = vmci_host_unlocked_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
};
static struct miscdevice vmci_host_miscdev = {
diff --git a/drivers/nvdimm/bus.c b/drivers/nvdimm/bus.c
index 8aae6dcc839f..7449cbc55df7 100644
--- a/drivers/nvdimm/bus.c
+++ b/drivers/nvdimm/bus.c
@@ -1133,7 +1133,7 @@ static const struct file_operations nvdimm_bus_fops = {
.owner = THIS_MODULE,
.open = nd_open,
.unlocked_ioctl = nd_ioctl,
- .compat_ioctl = nd_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
.llseek = noop_llseek,
};
@@ -1141,7 +1141,7 @@ static const struct file_operations nvdimm_fops = {
.owner = THIS_MODULE,
.open = nd_open,
.unlocked_ioctl = nvdimm_ioctl,
- .compat_ioctl = nvdimm_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
.llseek = noop_llseek,
};
diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
index dd8ec1dd9219..2d986f573a29 100644
--- a/drivers/nvme/host/core.c
+++ b/drivers/nvme/host/core.c
@@ -2579,7 +2579,7 @@ static const struct file_operations nvme_dev_fops = {
.owner = THIS_MODULE,
.open = nvme_dev_open,
.unlocked_ioctl = nvme_dev_ioctl,
- .compat_ioctl = nvme_dev_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
};
static ssize_t nvme_sysfs_reset(struct device *dev,
diff --git a/drivers/pci/switch/switchtec.c b/drivers/pci/switch/switchtec.c
index 9940cc70f38b..4296919c784e 100644
--- a/drivers/pci/switch/switchtec.c
+++ b/drivers/pci/switch/switchtec.c
@@ -967,7 +967,7 @@ static const struct file_operations switchtec_fops = {
.read = switchtec_dev_read,
.poll = switchtec_dev_poll,
.unlocked_ioctl = switchtec_dev_ioctl,
- .compat_ioctl = switchtec_dev_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
};
static void link_event_work(struct work_struct *work)
diff --git a/drivers/platform/x86/wmi.c b/drivers/platform/x86/wmi.c
index 04791ea5d97b..e4d0697e07d6 100644
--- a/drivers/platform/x86/wmi.c
+++ b/drivers/platform/x86/wmi.c
@@ -886,7 +886,7 @@ static const struct file_operations wmi_fops = {
.read = wmi_char_read,
.open = wmi_char_open,
.unlocked_ioctl = wmi_ioctl,
- .compat_ioctl = wmi_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
};
static int wmi_dev_probe(struct device *dev)
diff --git a/drivers/rpmsg/rpmsg_char.c b/drivers/rpmsg/rpmsg_char.c
index a76b963a7e50..02aefb2b2d47 100644
--- a/drivers/rpmsg/rpmsg_char.c
+++ b/drivers/rpmsg/rpmsg_char.c
@@ -285,7 +285,7 @@ static const struct file_operations rpmsg_eptdev_fops = {
.write = rpmsg_eptdev_write,
.poll = rpmsg_eptdev_poll,
.unlocked_ioctl = rpmsg_eptdev_ioctl,
- .compat_ioctl = rpmsg_eptdev_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
};
static ssize_t name_show(struct device *dev, struct device_attribute *attr,
@@ -446,7 +446,7 @@ static const struct file_operations rpmsg_ctrldev_fops = {
.open = rpmsg_ctrldev_open,
.release = rpmsg_ctrldev_release,
.unlocked_ioctl = rpmsg_ctrldev_ioctl,
- .compat_ioctl = rpmsg_ctrldev_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
};
static void rpmsg_ctrldev_release_device(struct device *dev)
diff --git a/drivers/sbus/char/display7seg.c b/drivers/sbus/char/display7seg.c
index 5c8ed7350a04..064fe7247eb2 100644
--- a/drivers/sbus/char/display7seg.c
+++ b/drivers/sbus/char/display7seg.c
@@ -155,7 +155,7 @@ static long d7s_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
static const struct file_operations d7s_fops = {
.owner = THIS_MODULE,
.unlocked_ioctl = d7s_ioctl,
- .compat_ioctl = d7s_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
.open = d7s_open,
.release = d7s_release,
.llseek = noop_llseek,
diff --git a/drivers/sbus/char/envctrl.c b/drivers/sbus/char/envctrl.c
index 56e962a01493..a26665ccea56 100644
--- a/drivers/sbus/char/envctrl.c
+++ b/drivers/sbus/char/envctrl.c
@@ -714,9 +714,7 @@ static const struct file_operations envctrl_fops = {
.owner = THIS_MODULE,
.read = envctrl_read,
.unlocked_ioctl = envctrl_ioctl,
-#ifdef CONFIG_COMPAT
- .compat_ioctl = envctrl_ioctl,
-#endif
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
.open = envctrl_open,
.release = envctrl_release,
.llseek = noop_llseek,
diff --git a/drivers/scsi/3w-xxxx.c b/drivers/scsi/3w-xxxx.c
index 471366945bd4..86c9f22a152f 100644
--- a/drivers/scsi/3w-xxxx.c
+++ b/drivers/scsi/3w-xxxx.c
@@ -1047,9 +1047,7 @@ static int tw_chrdev_open(struct inode *inode, struct file *file)
static const struct file_operations tw_fops = {
.owner = THIS_MODULE,
.unlocked_ioctl = tw_chrdev_ioctl,
-#ifdef CONFIG_COMPAT
- .compat_ioctl = tw_chrdev_ioctl,
-#endif
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
.open = tw_chrdev_open,
.release = NULL,
.llseek = noop_llseek,
diff --git a/drivers/scsi/cxlflash/main.c b/drivers/scsi/cxlflash/main.c
index 6637116529aa..d968efeb50e8 100644
--- a/drivers/scsi/cxlflash/main.c
+++ b/drivers/scsi/cxlflash/main.c
@@ -3596,7 +3596,7 @@ static const struct file_operations cxlflash_chr_fops = {
.owner = THIS_MODULE,
.open = cxlflash_chr_open,
.unlocked_ioctl = cxlflash_chr_ioctl,
- .compat_ioctl = cxlflash_chr_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
};
/**
diff --git a/drivers/scsi/esas2r/esas2r_main.c b/drivers/scsi/esas2r/esas2r_main.c
index c07118617d89..95142292e702 100644
--- a/drivers/scsi/esas2r/esas2r_main.c
+++ b/drivers/scsi/esas2r/esas2r_main.c
@@ -614,7 +614,7 @@ static int __init esas2r_init(void)
/* Handle ioctl calls to "/proc/scsi/esas2r/ATTOnode" */
static const struct file_operations esas2r_proc_fops = {
- .compat_ioctl = esas2r_proc_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
.unlocked_ioctl = esas2r_proc_ioctl,
};
diff --git a/drivers/scsi/pmcraid.c b/drivers/scsi/pmcraid.c
index 4e86994e10e8..8a8c73d3bdad 100644
--- a/drivers/scsi/pmcraid.c
+++ b/drivers/scsi/pmcraid.c
@@ -3999,9 +3999,7 @@ static const struct file_operations pmcraid_fops = {
.open = pmcraid_chr_open,
.fasync = pmcraid_chr_fasync,
.unlocked_ioctl = pmcraid_chr_ioctl,
-#ifdef CONFIG_COMPAT
- .compat_ioctl = pmcraid_chr_ioctl,
-#endif
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
.llseek = noop_llseek,
};
diff --git a/drivers/staging/android/ion/ion.c b/drivers/staging/android/ion/ion.c
index 99073325b0c0..ef727c235392 100644
--- a/drivers/staging/android/ion/ion.c
+++ b/drivers/staging/android/ion/ion.c
@@ -484,9 +484,7 @@ int ion_query_heaps(struct ion_heap_query *query)
static const struct file_operations ion_fops = {
.owner = THIS_MODULE,
.unlocked_ioctl = ion_ioctl,
-#ifdef CONFIG_COMPAT
- .compat_ioctl = ion_ioctl,
-#endif
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
};
static int debug_shrink_set(void *data, u64 val)
diff --git a/drivers/staging/vme/devices/vme_user.c b/drivers/staging/vme/devices/vme_user.c
index 6a33aaa1a49f..568700ffd2f2 100644
--- a/drivers/staging/vme/devices/vme_user.c
+++ b/drivers/staging/vme/devices/vme_user.c
@@ -494,7 +494,7 @@ static const struct file_operations vme_user_fops = {
.write = vme_user_write,
.llseek = vme_user_llseek,
.unlocked_ioctl = vme_user_unlocked_ioctl,
- .compat_ioctl = vme_user_unlocked_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
.mmap = vme_user_mmap,
};
diff --git a/drivers/tee/tee_core.c b/drivers/tee/tee_core.c
index dd46b758852a..cb79f28be894 100644
--- a/drivers/tee/tee_core.c
+++ b/drivers/tee/tee_core.c
@@ -670,7 +670,7 @@ static const struct file_operations tee_fops = {
.open = tee_open,
.release = tee_release,
.unlocked_ioctl = tee_ioctl,
- .compat_ioctl = tee_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
};
static void tee_release_device(struct device *dev)
diff --git a/drivers/usb/class/cdc-wdm.c b/drivers/usb/class/cdc-wdm.c
index bec581fb7c63..6e4998c8e64f 100644
--- a/drivers/usb/class/cdc-wdm.c
+++ b/drivers/usb/class/cdc-wdm.c
@@ -724,7 +724,7 @@ static const struct file_operations wdm_fops = {
.release = wdm_release,
.poll = wdm_poll,
.unlocked_ioctl = wdm_ioctl,
- .compat_ioctl = wdm_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
.llseek = noop_llseek,
};
diff --git a/drivers/usb/class/usbtmc.c b/drivers/usb/class/usbtmc.c
index 83ffa5a14c3d..d5da47c4c462 100644
--- a/drivers/usb/class/usbtmc.c
+++ b/drivers/usb/class/usbtmc.c
@@ -1460,9 +1460,7 @@ static const struct file_operations fops = {
.open = usbtmc_open,
.release = usbtmc_release,
.unlocked_ioctl = usbtmc_ioctl,
-#ifdef CONFIG_COMPAT
- .compat_ioctl = usbtmc_ioctl,
-#endif
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
.fasync = usbtmc_fasync,
.poll = usbtmc_poll,
.llseek = default_llseek,
diff --git a/drivers/video/fbdev/ps3fb.c b/drivers/video/fbdev/ps3fb.c
index 5ed2db39d823..f9f8ffaf1c4a 100644
--- a/drivers/video/fbdev/ps3fb.c
+++ b/drivers/video/fbdev/ps3fb.c
@@ -949,7 +949,7 @@ static struct fb_ops ps3fb_ops = {
.fb_mmap = ps3fb_mmap,
.fb_blank = ps3fb_blank,
.fb_ioctl = ps3fb_ioctl,
- .fb_compat_ioctl = ps3fb_ioctl
+ .fb_compat_ioctl = generic_compat_ioctl_ptrarg,
};
static const struct fb_fix_screeninfo ps3fb_fix = {
diff --git a/drivers/virt/fsl_hypervisor.c b/drivers/virt/fsl_hypervisor.c
index 8ba726e600e9..406b7e492214 100644
--- a/drivers/virt/fsl_hypervisor.c
+++ b/drivers/virt/fsl_hypervisor.c
@@ -703,7 +703,7 @@ static const struct file_operations fsl_hv_fops = {
.poll = fsl_hv_poll,
.read = fsl_hv_read,
.unlocked_ioctl = fsl_hv_ioctl,
- .compat_ioctl = fsl_hv_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
};
static struct miscdevice fsl_hv_misc_dev = {
diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index 6601c9aa5e35..2b5a8ad86305 100644
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -2352,7 +2352,7 @@ static const struct super_operations btrfs_super_ops = {
static const struct file_operations btrfs_ctl_fops = {
.open = btrfs_control_open,
.unlocked_ioctl = btrfs_control_ioctl,
- .compat_ioctl = btrfs_control_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
.owner = THIS_MODULE,
.llseek = noop_llseek,
};
diff --git a/fs/ceph/dir.c b/fs/ceph/dir.c
index da73f29d7faa..eb869fe6774d 100644
--- a/fs/ceph/dir.c
+++ b/fs/ceph/dir.c
@@ -1489,7 +1489,7 @@ const struct file_operations ceph_dir_fops = {
.open = ceph_open,
.release = ceph_release,
.unlocked_ioctl = ceph_ioctl,
- .compat_ioctl = ceph_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
.fsync = ceph_fsync,
.lock = ceph_lock,
.flock = ceph_flock,
diff --git a/fs/ceph/file.c b/fs/ceph/file.c
index 92ab20433682..85094042cfac 100644
--- a/fs/ceph/file.c
+++ b/fs/ceph/file.c
@@ -1842,7 +1842,7 @@ const struct file_operations ceph_file_fops = {
.splice_read = generic_file_splice_read,
.splice_write = iter_file_splice_write,
.unlocked_ioctl = ceph_ioctl,
- .compat_ioctl = ceph_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
.fallocate = ceph_fallocate,
};
diff --git a/fs/fuse/dev.c b/fs/fuse/dev.c
index 11ea2c4a38ab..a6d4a24963ed 100644
--- a/fs/fuse/dev.c
+++ b/fs/fuse/dev.c
@@ -2258,7 +2258,7 @@ const struct file_operations fuse_dev_operations = {
.release = fuse_dev_release,
.fasync = fuse_dev_fasync,
.unlocked_ioctl = fuse_dev_ioctl,
- .compat_ioctl = fuse_dev_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
};
EXPORT_SYMBOL_GPL(fuse_dev_operations);
diff --git a/fs/notify/fanotify/fanotify_user.c b/fs/notify/fanotify/fanotify_user.c
index 69054886915b..fc4193b384cf 100644
--- a/fs/notify/fanotify/fanotify_user.c
+++ b/fs/notify/fanotify/fanotify_user.c
@@ -447,7 +447,7 @@ static const struct file_operations fanotify_fops = {
.fasync = NULL,
.release = fanotify_release,
.unlocked_ioctl = fanotify_ioctl,
- .compat_ioctl = fanotify_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
.llseek = noop_llseek,
};
diff --git a/fs/userfaultfd.c b/fs/userfaultfd.c
index bfa0ec69f924..bc9118b58a8a 100644
--- a/fs/userfaultfd.c
+++ b/fs/userfaultfd.c
@@ -1878,7 +1878,7 @@ static const struct file_operations userfaultfd_fops = {
.poll = userfaultfd_poll,
.read = userfaultfd_read,
.unlocked_ioctl = userfaultfd_ioctl,
- .compat_ioctl = userfaultfd_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
.llseek = noop_llseek,
};
diff --git a/net/rfkill/core.c b/net/rfkill/core.c
index 1355f5ca8d22..ba68b53f58ab 100644
--- a/net/rfkill/core.c
+++ b/net/rfkill/core.c
@@ -1323,7 +1323,7 @@ static const struct file_operations rfkill_fops = {
.release = rfkill_fop_release,
#ifdef CONFIG_RFKILL_INPUT
.unlocked_ioctl = rfkill_fop_ioctl,
- .compat_ioctl = rfkill_fop_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
#endif
.llseek = no_llseek,
};
^ permalink raw reply related [flat|nested] 141+ messages in thread
* [PATCH v2 05/17] compat_ioctl: move more drivers to generic_compat_ioctl_ptrarg
@ 2018-09-12 15:08 ` Arnd Bergmann
0 siblings, 0 replies; 141+ messages in thread
From: Arnd Bergmann @ 2018-09-12 15:08 UTC (permalink / raw)
To: viro-RmSDqhL/yNMiFSDQTTA3OLVCufUGDwFn
Cc: linux-fbdev-u79uwXL29TY76Z2rM5mHXA,
linux-iio-u79uwXL29TY76Z2rM5mHXA,
linux-pci-u79uwXL29TY76Z2rM5mHXA,
linux-remoteproc-u79uwXL29TY76Z2rM5mHXA,
linux-nvme-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
platform-driver-x86-u79uwXL29TY76Z2rM5mHXA,
sparclinux-u79uwXL29TY76Z2rM5mHXA,
devel-gWbeCf7V1WCQmaza687I9mD2FQJk+8+b,
linux-scsi-u79uwXL29TY76Z2rM5mHXA,
linux-nvdimm-hn68Rpc1hR1g9hUCZPvPmw,
linux-rdma-u79uwXL29TY76Z2rM5mHXA,
qat-linux-ral2JQCrhuEAvxtiuMwx3w,
amd-gfx-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW,
linux-input-u79uwXL29TY76Z2rM5mHXA,
linux-media-u79uwXL29TY76Z2rM5mHXA, Arnd Bergmann,
linaro-mm-sig-cunTk1MwBs8s++Sfvej+rw,
dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW,
ceph-devel-u79uwXL29TY76Z2rM5mHXA, Greg Kroah-Hartman,
linux-usb-u79uwXL29TY76Z2rM5mHXA,
linux-wireless-u79uwXL29TY76Z2rM5mHXA,
linux-kernel-u79uwXL29TY76Z2rM5mHXA,
linux-crypto-u79uwXL29TY76Z2rM5mHXA,
netdev-u79uwXL29TY76Z2rM5mHXA,
linux-fsdevel-u79uwXL29TY76Z2rM5mHXA,
linuxppc-dev-uLR06cmDAlY/bJ5BZ2RsiQ, David S. Miller,
linux-btrfs-u79uwXL29TY76Z2rM5mHXA
The .ioctl and .compat_ioctl file operations have the same prototype so
they can both point to the same function, which works great almost all
the time when all the commands are compatible.
One exception is the s390 architecture, where a compat pointer is only
31 bit wide, and converting it into a 64-bit pointer requires calling
compat_ptr(). Most drivers here will ever run in s390, but since we now
have a generic helper for it, it's easy enough to use it consistently.
I double-checked all these drivers to ensure that all ioctl arguments
are used as pointers or are ignored, but are not interpreted as integer
values.
Signed-off-by: Arnd Bergmann <arnd-r2nGTMty4D4@public.gmane.org>
---
drivers/android/binder.c | 2 +-
drivers/crypto/qat/qat_common/adf_ctl_drv.c | 2 +-
drivers/dma-buf/dma-buf.c | 4 +---
drivers/dma-buf/sw_sync.c | 2 +-
drivers/dma-buf/sync_file.c | 2 +-
drivers/gpu/drm/amd/amdkfd/kfd_chardev.c | 2 +-
drivers/hid/hidraw.c | 4 +---
drivers/iio/industrialio-core.c | 2 +-
drivers/infiniband/core/uverbs_main.c | 4 ++--
drivers/media/rc/lirc_dev.c | 4 +---
drivers/mfd/cros_ec_dev.c | 4 +---
drivers/misc/vmw_vmci/vmci_host.c | 2 +-
drivers/nvdimm/bus.c | 4 ++--
drivers/nvme/host/core.c | 2 +-
drivers/pci/switch/switchtec.c | 2 +-
drivers/platform/x86/wmi.c | 2 +-
drivers/rpmsg/rpmsg_char.c | 4 ++--
drivers/sbus/char/display7seg.c | 2 +-
drivers/sbus/char/envctrl.c | 4 +---
drivers/scsi/3w-xxxx.c | 4 +---
drivers/scsi/cxlflash/main.c | 2 +-
drivers/scsi/esas2r/esas2r_main.c | 2 +-
drivers/scsi/pmcraid.c | 4 +---
drivers/staging/android/ion/ion.c | 4 +---
drivers/staging/vme/devices/vme_user.c | 2 +-
drivers/tee/tee_core.c | 2 +-
drivers/usb/class/cdc-wdm.c | 2 +-
drivers/usb/class/usbtmc.c | 4 +---
drivers/video/fbdev/ps3fb.c | 2 +-
drivers/virt/fsl_hypervisor.c | 2 +-
fs/btrfs/super.c | 2 +-
fs/ceph/dir.c | 2 +-
fs/ceph/file.c | 2 +-
fs/fuse/dev.c | 2 +-
fs/notify/fanotify/fanotify_user.c | 2 +-
fs/userfaultfd.c | 2 +-
net/rfkill/core.c | 2 +-
37 files changed, 40 insertions(+), 58 deletions(-)
diff --git a/drivers/android/binder.c b/drivers/android/binder.c
index d58763b6b009..d2464f5759f8 100644
--- a/drivers/android/binder.c
+++ b/drivers/android/binder.c
@@ -5576,7 +5576,7 @@ static const struct file_operations binder_fops = {
.owner = THIS_MODULE,
.poll = binder_poll,
.unlocked_ioctl = binder_ioctl,
- .compat_ioctl = binder_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
.mmap = binder_mmap,
.open = binder_open,
.flush = binder_flush,
diff --git a/drivers/crypto/qat/qat_common/adf_ctl_drv.c b/drivers/crypto/qat/qat_common/adf_ctl_drv.c
index abc7a7f64d64..8ff77a70addc 100644
--- a/drivers/crypto/qat/qat_common/adf_ctl_drv.c
+++ b/drivers/crypto/qat/qat_common/adf_ctl_drv.c
@@ -68,7 +68,7 @@ static long adf_ctl_ioctl(struct file *fp, unsigned int cmd, unsigned long arg);
static const struct file_operations adf_ctl_ops = {
.owner = THIS_MODULE,
.unlocked_ioctl = adf_ctl_ioctl,
- .compat_ioctl = adf_ctl_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
};
struct adf_ctl_drv_info {
diff --git a/drivers/dma-buf/dma-buf.c b/drivers/dma-buf/dma-buf.c
index 13884474d158..a6d7dc4cf7e9 100644
--- a/drivers/dma-buf/dma-buf.c
+++ b/drivers/dma-buf/dma-buf.c
@@ -325,9 +325,7 @@ static const struct file_operations dma_buf_fops = {
.llseek = dma_buf_llseek,
.poll = dma_buf_poll,
.unlocked_ioctl = dma_buf_ioctl,
-#ifdef CONFIG_COMPAT
- .compat_ioctl = dma_buf_ioctl,
-#endif
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
};
/*
diff --git a/drivers/dma-buf/sw_sync.c b/drivers/dma-buf/sw_sync.c
index 53c1d6d36a64..bc810506d487 100644
--- a/drivers/dma-buf/sw_sync.c
+++ b/drivers/dma-buf/sw_sync.c
@@ -419,5 +419,5 @@ const struct file_operations sw_sync_debugfs_fops = {
.open = sw_sync_debugfs_open,
.release = sw_sync_debugfs_release,
.unlocked_ioctl = sw_sync_ioctl,
- .compat_ioctl = sw_sync_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
};
diff --git a/drivers/dma-buf/sync_file.c b/drivers/dma-buf/sync_file.c
index 35dd06479867..1c64ed60c658 100644
--- a/drivers/dma-buf/sync_file.c
+++ b/drivers/dma-buf/sync_file.c
@@ -488,5 +488,5 @@ static const struct file_operations sync_file_fops = {
.release = sync_file_release,
.poll = sync_file_poll,
.unlocked_ioctl = sync_file_ioctl,
- .compat_ioctl = sync_file_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
};
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
index 297b36c26a05..1d7b1e3c3ebe 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
@@ -47,7 +47,7 @@ static const char kfd_dev_name[] = "kfd";
static const struct file_operations kfd_fops = {
.owner = THIS_MODULE,
.unlocked_ioctl = kfd_ioctl,
- .compat_ioctl = kfd_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
.open = kfd_open,
.mmap = kfd_mmap,
};
diff --git a/drivers/hid/hidraw.c b/drivers/hid/hidraw.c
index 4a44e48e08b2..e44b64812850 100644
--- a/drivers/hid/hidraw.c
+++ b/drivers/hid/hidraw.c
@@ -476,9 +476,7 @@ static const struct file_operations hidraw_ops = {
.release = hidraw_release,
.unlocked_ioctl = hidraw_ioctl,
.fasync = hidraw_fasync,
-#ifdef CONFIG_COMPAT
- .compat_ioctl = hidraw_ioctl,
-#endif
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
.llseek = noop_llseek,
};
diff --git a/drivers/iio/industrialio-core.c b/drivers/iio/industrialio-core.c
index a062cfddc5af..22844b94b0e9 100644
--- a/drivers/iio/industrialio-core.c
+++ b/drivers/iio/industrialio-core.c
@@ -1630,7 +1630,7 @@ static const struct file_operations iio_buffer_fileops = {
.owner = THIS_MODULE,
.llseek = noop_llseek,
.unlocked_ioctl = iio_ioctl,
- .compat_ioctl = iio_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
};
static int iio_check_unique_scan_index(struct iio_dev *indio_dev)
diff --git a/drivers/infiniband/core/uverbs_main.c b/drivers/infiniband/core/uverbs_main.c
index 823beca448e1..f4755c1c9cfa 100644
--- a/drivers/infiniband/core/uverbs_main.c
+++ b/drivers/infiniband/core/uverbs_main.c
@@ -930,7 +930,7 @@ static const struct file_operations uverbs_fops = {
.release = ib_uverbs_close,
.llseek = no_llseek,
.unlocked_ioctl = ib_uverbs_ioctl,
- .compat_ioctl = ib_uverbs_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
};
static const struct file_operations uverbs_mmap_fops = {
@@ -941,7 +941,7 @@ static const struct file_operations uverbs_mmap_fops = {
.release = ib_uverbs_close,
.llseek = no_llseek,
.unlocked_ioctl = ib_uverbs_ioctl,
- .compat_ioctl = ib_uverbs_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
};
static struct ib_client uverbs_client = {
diff --git a/drivers/media/rc/lirc_dev.c b/drivers/media/rc/lirc_dev.c
index f862f1b7f996..077209f414ed 100644
--- a/drivers/media/rc/lirc_dev.c
+++ b/drivers/media/rc/lirc_dev.c
@@ -730,9 +730,7 @@ static const struct file_operations lirc_fops = {
.owner = THIS_MODULE,
.write = ir_lirc_transmit_ir,
.unlocked_ioctl = ir_lirc_ioctl,
-#ifdef CONFIG_COMPAT
- .compat_ioctl = ir_lirc_ioctl,
-#endif
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
.read = ir_lirc_read,
.poll = ir_lirc_poll,
.open = ir_lirc_open,
diff --git a/drivers/mfd/cros_ec_dev.c b/drivers/mfd/cros_ec_dev.c
index 999dac752bcc..35a04bcf55da 100644
--- a/drivers/mfd/cros_ec_dev.c
+++ b/drivers/mfd/cros_ec_dev.c
@@ -258,9 +258,7 @@ static const struct file_operations fops = {
.release = ec_device_release,
.read = ec_device_read,
.unlocked_ioctl = ec_device_ioctl,
-#ifdef CONFIG_COMPAT
- .compat_ioctl = ec_device_ioctl,
-#endif
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
};
static void cros_ec_sensors_register(struct cros_ec_dev *ec)
diff --git a/drivers/misc/vmw_vmci/vmci_host.c b/drivers/misc/vmw_vmci/vmci_host.c
index 83e0c95d20a4..1308f889e53b 100644
--- a/drivers/misc/vmw_vmci/vmci_host.c
+++ b/drivers/misc/vmw_vmci/vmci_host.c
@@ -983,7 +983,7 @@ static const struct file_operations vmuser_fops = {
.release = vmci_host_close,
.poll = vmci_host_poll,
.unlocked_ioctl = vmci_host_unlocked_ioctl,
- .compat_ioctl = vmci_host_unlocked_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
};
static struct miscdevice vmci_host_miscdev = {
diff --git a/drivers/nvdimm/bus.c b/drivers/nvdimm/bus.c
index 8aae6dcc839f..7449cbc55df7 100644
--- a/drivers/nvdimm/bus.c
+++ b/drivers/nvdimm/bus.c
@@ -1133,7 +1133,7 @@ static const struct file_operations nvdimm_bus_fops = {
.owner = THIS_MODULE,
.open = nd_open,
.unlocked_ioctl = nd_ioctl,
- .compat_ioctl = nd_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
.llseek = noop_llseek,
};
@@ -1141,7 +1141,7 @@ static const struct file_operations nvdimm_fops = {
.owner = THIS_MODULE,
.open = nd_open,
.unlocked_ioctl = nvdimm_ioctl,
- .compat_ioctl = nvdimm_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
.llseek = noop_llseek,
};
diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
index dd8ec1dd9219..2d986f573a29 100644
--- a/drivers/nvme/host/core.c
+++ b/drivers/nvme/host/core.c
@@ -2579,7 +2579,7 @@ static const struct file_operations nvme_dev_fops = {
.owner = THIS_MODULE,
.open = nvme_dev_open,
.unlocked_ioctl = nvme_dev_ioctl,
- .compat_ioctl = nvme_dev_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
};
static ssize_t nvme_sysfs_reset(struct device *dev,
diff --git a/drivers/pci/switch/switchtec.c b/drivers/pci/switch/switchtec.c
index 9940cc70f38b..4296919c784e 100644
--- a/drivers/pci/switch/switchtec.c
+++ b/drivers/pci/switch/switchtec.c
@@ -967,7 +967,7 @@ static const struct file_operations switchtec_fops = {
.read = switchtec_dev_read,
.poll = switchtec_dev_poll,
.unlocked_ioctl = switchtec_dev_ioctl,
- .compat_ioctl = switchtec_dev_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
};
static void link_event_work(struct work_struct *work)
diff --git a/drivers/platform/x86/wmi.c b/drivers/platform/x86/wmi.c
index 04791ea5d97b..e4d0697e07d6 100644
--- a/drivers/platform/x86/wmi.c
+++ b/drivers/platform/x86/wmi.c
@@ -886,7 +886,7 @@ static const struct file_operations wmi_fops = {
.read = wmi_char_read,
.open = wmi_char_open,
.unlocked_ioctl = wmi_ioctl,
- .compat_ioctl = wmi_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
};
static int wmi_dev_probe(struct device *dev)
diff --git a/drivers/rpmsg/rpmsg_char.c b/drivers/rpmsg/rpmsg_char.c
index a76b963a7e50..02aefb2b2d47 100644
--- a/drivers/rpmsg/rpmsg_char.c
+++ b/drivers/rpmsg/rpmsg_char.c
@@ -285,7 +285,7 @@ static const struct file_operations rpmsg_eptdev_fops = {
.write = rpmsg_eptdev_write,
.poll = rpmsg_eptdev_poll,
.unlocked_ioctl = rpmsg_eptdev_ioctl,
- .compat_ioctl = rpmsg_eptdev_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
};
static ssize_t name_show(struct device *dev, struct device_attribute *attr,
@@ -446,7 +446,7 @@ static const struct file_operations rpmsg_ctrldev_fops = {
.open = rpmsg_ctrldev_open,
.release = rpmsg_ctrldev_release,
.unlocked_ioctl = rpmsg_ctrldev_ioctl,
- .compat_ioctl = rpmsg_ctrldev_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
};
static void rpmsg_ctrldev_release_device(struct device *dev)
diff --git a/drivers/sbus/char/display7seg.c b/drivers/sbus/char/display7seg.c
index 5c8ed7350a04..064fe7247eb2 100644
--- a/drivers/sbus/char/display7seg.c
+++ b/drivers/sbus/char/display7seg.c
@@ -155,7 +155,7 @@ static long d7s_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
static const struct file_operations d7s_fops = {
.owner = THIS_MODULE,
.unlocked_ioctl = d7s_ioctl,
- .compat_ioctl = d7s_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
.open = d7s_open,
.release = d7s_release,
.llseek = noop_llseek,
diff --git a/drivers/sbus/char/envctrl.c b/drivers/sbus/char/envctrl.c
index 56e962a01493..a26665ccea56 100644
--- a/drivers/sbus/char/envctrl.c
+++ b/drivers/sbus/char/envctrl.c
@@ -714,9 +714,7 @@ static const struct file_operations envctrl_fops = {
.owner = THIS_MODULE,
.read = envctrl_read,
.unlocked_ioctl = envctrl_ioctl,
-#ifdef CONFIG_COMPAT
- .compat_ioctl = envctrl_ioctl,
-#endif
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
.open = envctrl_open,
.release = envctrl_release,
.llseek = noop_llseek,
diff --git a/drivers/scsi/3w-xxxx.c b/drivers/scsi/3w-xxxx.c
index 471366945bd4..86c9f22a152f 100644
--- a/drivers/scsi/3w-xxxx.c
+++ b/drivers/scsi/3w-xxxx.c
@@ -1047,9 +1047,7 @@ static int tw_chrdev_open(struct inode *inode, struct file *file)
static const struct file_operations tw_fops = {
.owner = THIS_MODULE,
.unlocked_ioctl = tw_chrdev_ioctl,
-#ifdef CONFIG_COMPAT
- .compat_ioctl = tw_chrdev_ioctl,
-#endif
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
.open = tw_chrdev_open,
.release = NULL,
.llseek = noop_llseek,
diff --git a/drivers/scsi/cxlflash/main.c b/drivers/scsi/cxlflash/main.c
index 6637116529aa..d968efeb50e8 100644
--- a/drivers/scsi/cxlflash/main.c
+++ b/drivers/scsi/cxlflash/main.c
@@ -3596,7 +3596,7 @@ static const struct file_operations cxlflash_chr_fops = {
.owner = THIS_MODULE,
.open = cxlflash_chr_open,
.unlocked_ioctl = cxlflash_chr_ioctl,
- .compat_ioctl = cxlflash_chr_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
};
/**
diff --git a/drivers/scsi/esas2r/esas2r_main.c b/drivers/scsi/esas2r/esas2r_main.c
index c07118617d89..95142292e702 100644
--- a/drivers/scsi/esas2r/esas2r_main.c
+++ b/drivers/scsi/esas2r/esas2r_main.c
@@ -614,7 +614,7 @@ static int __init esas2r_init(void)
/* Handle ioctl calls to "/proc/scsi/esas2r/ATTOnode" */
static const struct file_operations esas2r_proc_fops = {
- .compat_ioctl = esas2r_proc_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
.unlocked_ioctl = esas2r_proc_ioctl,
};
diff --git a/drivers/scsi/pmcraid.c b/drivers/scsi/pmcraid.c
index 4e86994e10e8..8a8c73d3bdad 100644
--- a/drivers/scsi/pmcraid.c
+++ b/drivers/scsi/pmcraid.c
@@ -3999,9 +3999,7 @@ static const struct file_operations pmcraid_fops = {
.open = pmcraid_chr_open,
.fasync = pmcraid_chr_fasync,
.unlocked_ioctl = pmcraid_chr_ioctl,
-#ifdef CONFIG_COMPAT
- .compat_ioctl = pmcraid_chr_ioctl,
-#endif
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
.llseek = noop_llseek,
};
diff --git a/drivers/staging/android/ion/ion.c b/drivers/staging/android/ion/ion.c
index 99073325b0c0..ef727c235392 100644
--- a/drivers/staging/android/ion/ion.c
+++ b/drivers/staging/android/ion/ion.c
@@ -484,9 +484,7 @@ int ion_query_heaps(struct ion_heap_query *query)
static const struct file_operations ion_fops = {
.owner = THIS_MODULE,
.unlocked_ioctl = ion_ioctl,
-#ifdef CONFIG_COMPAT
- .compat_ioctl = ion_ioctl,
-#endif
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
};
static int debug_shrink_set(void *data, u64 val)
diff --git a/drivers/staging/vme/devices/vme_user.c b/drivers/staging/vme/devices/vme_user.c
index 6a33aaa1a49f..568700ffd2f2 100644
--- a/drivers/staging/vme/devices/vme_user.c
+++ b/drivers/staging/vme/devices/vme_user.c
@@ -494,7 +494,7 @@ static const struct file_operations vme_user_fops = {
.write = vme_user_write,
.llseek = vme_user_llseek,
.unlocked_ioctl = vme_user_unlocked_ioctl,
- .compat_ioctl = vme_user_unlocked_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
.mmap = vme_user_mmap,
};
diff --git a/drivers/tee/tee_core.c b/drivers/tee/tee_core.c
index dd46b758852a..cb79f28be894 100644
--- a/drivers/tee/tee_core.c
+++ b/drivers/tee/tee_core.c
@@ -670,7 +670,7 @@ static const struct file_operations tee_fops = {
.open = tee_open,
.release = tee_release,
.unlocked_ioctl = tee_ioctl,
- .compat_ioctl = tee_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
};
static void tee_release_device(struct device *dev)
diff --git a/drivers/usb/class/cdc-wdm.c b/drivers/usb/class/cdc-wdm.c
index bec581fb7c63..6e4998c8e64f 100644
--- a/drivers/usb/class/cdc-wdm.c
+++ b/drivers/usb/class/cdc-wdm.c
@@ -724,7 +724,7 @@ static const struct file_operations wdm_fops = {
.release = wdm_release,
.poll = wdm_poll,
.unlocked_ioctl = wdm_ioctl,
- .compat_ioctl = wdm_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
.llseek = noop_llseek,
};
diff --git a/drivers/usb/class/usbtmc.c b/drivers/usb/class/usbtmc.c
index 83ffa5a14c3d..d5da47c4c462 100644
--- a/drivers/usb/class/usbtmc.c
+++ b/drivers/usb/class/usbtmc.c
@@ -1460,9 +1460,7 @@ static const struct file_operations fops = {
.open = usbtmc_open,
.release = usbtmc_release,
.unlocked_ioctl = usbtmc_ioctl,
-#ifdef CONFIG_COMPAT
- .compat_ioctl = usbtmc_ioctl,
-#endif
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
.fasync = usbtmc_fasync,
.poll = usbtmc_poll,
.llseek = default_llseek,
diff --git a/drivers/video/fbdev/ps3fb.c b/drivers/video/fbdev/ps3fb.c
index 5ed2db39d823..f9f8ffaf1c4a 100644
--- a/drivers/video/fbdev/ps3fb.c
+++ b/drivers/video/fbdev/ps3fb.c
@@ -949,7 +949,7 @@ static struct fb_ops ps3fb_ops = {
.fb_mmap = ps3fb_mmap,
.fb_blank = ps3fb_blank,
.fb_ioctl = ps3fb_ioctl,
- .fb_compat_ioctl = ps3fb_ioctl
+ .fb_compat_ioctl = generic_compat_ioctl_ptrarg,
};
static const struct fb_fix_screeninfo ps3fb_fix = {
diff --git a/drivers/virt/fsl_hypervisor.c b/drivers/virt/fsl_hypervisor.c
index 8ba726e600e9..406b7e492214 100644
--- a/drivers/virt/fsl_hypervisor.c
+++ b/drivers/virt/fsl_hypervisor.c
@@ -703,7 +703,7 @@ static const struct file_operations fsl_hv_fops = {
.poll = fsl_hv_poll,
.read = fsl_hv_read,
.unlocked_ioctl = fsl_hv_ioctl,
- .compat_ioctl = fsl_hv_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
};
static struct miscdevice fsl_hv_misc_dev = {
diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index 6601c9aa5e35..2b5a8ad86305 100644
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -2352,7 +2352,7 @@ static const struct super_operations btrfs_super_ops = {
static const struct file_operations btrfs_ctl_fops = {
.open = btrfs_control_open,
.unlocked_ioctl = btrfs_control_ioctl,
- .compat_ioctl = btrfs_control_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
.owner = THIS_MODULE,
.llseek = noop_llseek,
};
diff --git a/fs/ceph/dir.c b/fs/ceph/dir.c
index da73f29d7faa..eb869fe6774d 100644
--- a/fs/ceph/dir.c
+++ b/fs/ceph/dir.c
@@ -1489,7 +1489,7 @@ const struct file_operations ceph_dir_fops = {
.open = ceph_open,
.release = ceph_release,
.unlocked_ioctl = ceph_ioctl,
- .compat_ioctl = ceph_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
.fsync = ceph_fsync,
.lock = ceph_lock,
.flock = ceph_flock,
diff --git a/fs/ceph/file.c b/fs/ceph/file.c
index 92ab20433682..85094042cfac 100644
--- a/fs/ceph/file.c
+++ b/fs/ceph/file.c
@@ -1842,7 +1842,7 @@ const struct file_operations ceph_file_fops = {
.splice_read = generic_file_splice_read,
.splice_write = iter_file_splice_write,
.unlocked_ioctl = ceph_ioctl,
- .compat_ioctl = ceph_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
.fallocate = ceph_fallocate,
};
diff --git a/fs/fuse/dev.c b/fs/fuse/dev.c
index 11ea2c4a38ab..a6d4a24963ed 100644
--- a/fs/fuse/dev.c
+++ b/fs/fuse/dev.c
@@ -2258,7 +2258,7 @@ const struct file_operations fuse_dev_operations = {
.release = fuse_dev_release,
.fasync = fuse_dev_fasync,
.unlocked_ioctl = fuse_dev_ioctl,
- .compat_ioctl = fuse_dev_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
};
EXPORT_SYMBOL_GPL(fuse_dev_operations);
diff --git a/fs/notify/fanotify/fanotify_user.c b/fs/notify/fanotify/fanotify_user.c
index 69054886915b..fc4193b384cf 100644
--- a/fs/notify/fanotify/fanotify_user.c
+++ b/fs/notify/fanotify/fanotify_user.c
@@ -447,7 +447,7 @@ static const struct file_operations fanotify_fops = {
.fasync = NULL,
.release = fanotify_release,
.unlocked_ioctl = fanotify_ioctl,
- .compat_ioctl = fanotify_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
.llseek = noop_llseek,
};
diff --git a/fs/userfaultfd.c b/fs/userfaultfd.c
index bfa0ec69f924..bc9118b58a8a 100644
--- a/fs/userfaultfd.c
+++ b/fs/userfaultfd.c
@@ -1878,7 +1878,7 @@ static const struct file_operations userfaultfd_fops = {
.poll = userfaultfd_poll,
.read = userfaultfd_read,
.unlocked_ioctl = userfaultfd_ioctl,
- .compat_ioctl = userfaultfd_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
.llseek = noop_llseek,
};
diff --git a/net/rfkill/core.c b/net/rfkill/core.c
index 1355f5ca8d22..ba68b53f58ab 100644
--- a/net/rfkill/core.c
+++ b/net/rfkill/core.c
@@ -1323,7 +1323,7 @@ static const struct file_operations rfkill_fops = {
.release = rfkill_fop_release,
#ifdef CONFIG_RFKILL_INPUT
.unlocked_ioctl = rfkill_fop_ioctl,
- .compat_ioctl = rfkill_fop_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
#endif
.llseek = no_llseek,
};
--
2.18.0
^ permalink raw reply related [flat|nested] 141+ messages in thread
* [PATCH v2 05/17] compat_ioctl: move more drivers to generic_compat_ioctl_ptrarg
@ 2018-09-12 15:08 ` Arnd Bergmann
0 siblings, 0 replies; 141+ messages in thread
From: Arnd Bergmann @ 2018-09-12 15:08 UTC (permalink / raw)
To: viro
Cc: linux-fsdevel, Arnd Bergmann, Greg Kroah-Hartman,
David S. Miller, devel, linux-kernel, qat-linux, linux-crypto,
linux-media, dri-devel, linaro-mm-sig, amd-gfx, linux-input,
linux-iio, linux-rdma, linux-nvdimm, linux-nvme, linux-pci,
platform-driver-x86, linux-remoteproc, sparclinux, linux-scsi,
linux-usb, linux-fbdev, linuxppc-dev, linux-btrfs, ceph-devel,
linux-wireless, netdev
The .ioctl and .compat_ioctl file operations have the same prototype so
they can both point to the same function, which works great almost all
the time when all the commands are compatible.
One exception is the s390 architecture, where a compat pointer is only
31 bit wide, and converting it into a 64-bit pointer requires calling
compat_ptr(). Most drivers here will ever run in s390, but since we now
have a generic helper for it, it's easy enough to use it consistently.
I double-checked all these drivers to ensure that all ioctl arguments
are used as pointers or are ignored, but are not interpreted as integer
values.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
drivers/android/binder.c | 2 +-
drivers/crypto/qat/qat_common/adf_ctl_drv.c | 2 +-
drivers/dma-buf/dma-buf.c | 4 +---
drivers/dma-buf/sw_sync.c | 2 +-
drivers/dma-buf/sync_file.c | 2 +-
drivers/gpu/drm/amd/amdkfd/kfd_chardev.c | 2 +-
drivers/hid/hidraw.c | 4 +---
drivers/iio/industrialio-core.c | 2 +-
drivers/infiniband/core/uverbs_main.c | 4 ++--
drivers/media/rc/lirc_dev.c | 4 +---
drivers/mfd/cros_ec_dev.c | 4 +---
drivers/misc/vmw_vmci/vmci_host.c | 2 +-
drivers/nvdimm/bus.c | 4 ++--
drivers/nvme/host/core.c | 2 +-
drivers/pci/switch/switchtec.c | 2 +-
drivers/platform/x86/wmi.c | 2 +-
drivers/rpmsg/rpmsg_char.c | 4 ++--
drivers/sbus/char/display7seg.c | 2 +-
drivers/sbus/char/envctrl.c | 4 +---
drivers/scsi/3w-xxxx.c | 4 +---
drivers/scsi/cxlflash/main.c | 2 +-
drivers/scsi/esas2r/esas2r_main.c | 2 +-
drivers/scsi/pmcraid.c | 4 +---
drivers/staging/android/ion/ion.c | 4 +---
drivers/staging/vme/devices/vme_user.c | 2 +-
drivers/tee/tee_core.c | 2 +-
drivers/usb/class/cdc-wdm.c | 2 +-
drivers/usb/class/usbtmc.c | 4 +---
drivers/video/fbdev/ps3fb.c | 2 +-
drivers/virt/fsl_hypervisor.c | 2 +-
fs/btrfs/super.c | 2 +-
fs/ceph/dir.c | 2 +-
fs/ceph/file.c | 2 +-
fs/fuse/dev.c | 2 +-
fs/notify/fanotify/fanotify_user.c | 2 +-
fs/userfaultfd.c | 2 +-
net/rfkill/core.c | 2 +-
37 files changed, 40 insertions(+), 58 deletions(-)
diff --git a/drivers/android/binder.c b/drivers/android/binder.c
index d58763b6b009..d2464f5759f8 100644
--- a/drivers/android/binder.c
+++ b/drivers/android/binder.c
@@ -5576,7 +5576,7 @@ static const struct file_operations binder_fops = {
.owner = THIS_MODULE,
.poll = binder_poll,
.unlocked_ioctl = binder_ioctl,
- .compat_ioctl = binder_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
.mmap = binder_mmap,
.open = binder_open,
.flush = binder_flush,
diff --git a/drivers/crypto/qat/qat_common/adf_ctl_drv.c b/drivers/crypto/qat/qat_common/adf_ctl_drv.c
index abc7a7f64d64..8ff77a70addc 100644
--- a/drivers/crypto/qat/qat_common/adf_ctl_drv.c
+++ b/drivers/crypto/qat/qat_common/adf_ctl_drv.c
@@ -68,7 +68,7 @@ static long adf_ctl_ioctl(struct file *fp, unsigned int cmd, unsigned long arg);
static const struct file_operations adf_ctl_ops = {
.owner = THIS_MODULE,
.unlocked_ioctl = adf_ctl_ioctl,
- .compat_ioctl = adf_ctl_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
};
struct adf_ctl_drv_info {
diff --git a/drivers/dma-buf/dma-buf.c b/drivers/dma-buf/dma-buf.c
index 13884474d158..a6d7dc4cf7e9 100644
--- a/drivers/dma-buf/dma-buf.c
+++ b/drivers/dma-buf/dma-buf.c
@@ -325,9 +325,7 @@ static const struct file_operations dma_buf_fops = {
.llseek = dma_buf_llseek,
.poll = dma_buf_poll,
.unlocked_ioctl = dma_buf_ioctl,
-#ifdef CONFIG_COMPAT
- .compat_ioctl = dma_buf_ioctl,
-#endif
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
};
/*
diff --git a/drivers/dma-buf/sw_sync.c b/drivers/dma-buf/sw_sync.c
index 53c1d6d36a64..bc810506d487 100644
--- a/drivers/dma-buf/sw_sync.c
+++ b/drivers/dma-buf/sw_sync.c
@@ -419,5 +419,5 @@ const struct file_operations sw_sync_debugfs_fops = {
.open = sw_sync_debugfs_open,
.release = sw_sync_debugfs_release,
.unlocked_ioctl = sw_sync_ioctl,
- .compat_ioctl = sw_sync_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
};
diff --git a/drivers/dma-buf/sync_file.c b/drivers/dma-buf/sync_file.c
index 35dd06479867..1c64ed60c658 100644
--- a/drivers/dma-buf/sync_file.c
+++ b/drivers/dma-buf/sync_file.c
@@ -488,5 +488,5 @@ static const struct file_operations sync_file_fops = {
.release = sync_file_release,
.poll = sync_file_poll,
.unlocked_ioctl = sync_file_ioctl,
- .compat_ioctl = sync_file_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
};
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
index 297b36c26a05..1d7b1e3c3ebe 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
@@ -47,7 +47,7 @@ static const char kfd_dev_name[] = "kfd";
static const struct file_operations kfd_fops = {
.owner = THIS_MODULE,
.unlocked_ioctl = kfd_ioctl,
- .compat_ioctl = kfd_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
.open = kfd_open,
.mmap = kfd_mmap,
};
diff --git a/drivers/hid/hidraw.c b/drivers/hid/hidraw.c
index 4a44e48e08b2..e44b64812850 100644
--- a/drivers/hid/hidraw.c
+++ b/drivers/hid/hidraw.c
@@ -476,9 +476,7 @@ static const struct file_operations hidraw_ops = {
.release = hidraw_release,
.unlocked_ioctl = hidraw_ioctl,
.fasync = hidraw_fasync,
-#ifdef CONFIG_COMPAT
- .compat_ioctl = hidraw_ioctl,
-#endif
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
.llseek = noop_llseek,
};
diff --git a/drivers/iio/industrialio-core.c b/drivers/iio/industrialio-core.c
index a062cfddc5af..22844b94b0e9 100644
--- a/drivers/iio/industrialio-core.c
+++ b/drivers/iio/industrialio-core.c
@@ -1630,7 +1630,7 @@ static const struct file_operations iio_buffer_fileops = {
.owner = THIS_MODULE,
.llseek = noop_llseek,
.unlocked_ioctl = iio_ioctl,
- .compat_ioctl = iio_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
};
static int iio_check_unique_scan_index(struct iio_dev *indio_dev)
diff --git a/drivers/infiniband/core/uverbs_main.c b/drivers/infiniband/core/uverbs_main.c
index 823beca448e1..f4755c1c9cfa 100644
--- a/drivers/infiniband/core/uverbs_main.c
+++ b/drivers/infiniband/core/uverbs_main.c
@@ -930,7 +930,7 @@ static const struct file_operations uverbs_fops = {
.release = ib_uverbs_close,
.llseek = no_llseek,
.unlocked_ioctl = ib_uverbs_ioctl,
- .compat_ioctl = ib_uverbs_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
};
static const struct file_operations uverbs_mmap_fops = {
@@ -941,7 +941,7 @@ static const struct file_operations uverbs_mmap_fops = {
.release = ib_uverbs_close,
.llseek = no_llseek,
.unlocked_ioctl = ib_uverbs_ioctl,
- .compat_ioctl = ib_uverbs_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
};
static struct ib_client uverbs_client = {
diff --git a/drivers/media/rc/lirc_dev.c b/drivers/media/rc/lirc_dev.c
index f862f1b7f996..077209f414ed 100644
--- a/drivers/media/rc/lirc_dev.c
+++ b/drivers/media/rc/lirc_dev.c
@@ -730,9 +730,7 @@ static const struct file_operations lirc_fops = {
.owner = THIS_MODULE,
.write = ir_lirc_transmit_ir,
.unlocked_ioctl = ir_lirc_ioctl,
-#ifdef CONFIG_COMPAT
- .compat_ioctl = ir_lirc_ioctl,
-#endif
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
.read = ir_lirc_read,
.poll = ir_lirc_poll,
.open = ir_lirc_open,
diff --git a/drivers/mfd/cros_ec_dev.c b/drivers/mfd/cros_ec_dev.c
index 999dac752bcc..35a04bcf55da 100644
--- a/drivers/mfd/cros_ec_dev.c
+++ b/drivers/mfd/cros_ec_dev.c
@@ -258,9 +258,7 @@ static const struct file_operations fops = {
.release = ec_device_release,
.read = ec_device_read,
.unlocked_ioctl = ec_device_ioctl,
-#ifdef CONFIG_COMPAT
- .compat_ioctl = ec_device_ioctl,
-#endif
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
};
static void cros_ec_sensors_register(struct cros_ec_dev *ec)
diff --git a/drivers/misc/vmw_vmci/vmci_host.c b/drivers/misc/vmw_vmci/vmci_host.c
index 83e0c95d20a4..1308f889e53b 100644
--- a/drivers/misc/vmw_vmci/vmci_host.c
+++ b/drivers/misc/vmw_vmci/vmci_host.c
@@ -983,7 +983,7 @@ static const struct file_operations vmuser_fops = {
.release = vmci_host_close,
.poll = vmci_host_poll,
.unlocked_ioctl = vmci_host_unlocked_ioctl,
- .compat_ioctl = vmci_host_unlocked_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
};
static struct miscdevice vmci_host_miscdev = {
diff --git a/drivers/nvdimm/bus.c b/drivers/nvdimm/bus.c
index 8aae6dcc839f..7449cbc55df7 100644
--- a/drivers/nvdimm/bus.c
+++ b/drivers/nvdimm/bus.c
@@ -1133,7 +1133,7 @@ static const struct file_operations nvdimm_bus_fops = {
.owner = THIS_MODULE,
.open = nd_open,
.unlocked_ioctl = nd_ioctl,
- .compat_ioctl = nd_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
.llseek = noop_llseek,
};
@@ -1141,7 +1141,7 @@ static const struct file_operations nvdimm_fops = {
.owner = THIS_MODULE,
.open = nd_open,
.unlocked_ioctl = nvdimm_ioctl,
- .compat_ioctl = nvdimm_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
.llseek = noop_llseek,
};
diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
index dd8ec1dd9219..2d986f573a29 100644
--- a/drivers/nvme/host/core.c
+++ b/drivers/nvme/host/core.c
@@ -2579,7 +2579,7 @@ static const struct file_operations nvme_dev_fops = {
.owner = THIS_MODULE,
.open = nvme_dev_open,
.unlocked_ioctl = nvme_dev_ioctl,
- .compat_ioctl = nvme_dev_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
};
static ssize_t nvme_sysfs_reset(struct device *dev,
diff --git a/drivers/pci/switch/switchtec.c b/drivers/pci/switch/switchtec.c
index 9940cc70f38b..4296919c784e 100644
--- a/drivers/pci/switch/switchtec.c
+++ b/drivers/pci/switch/switchtec.c
@@ -967,7 +967,7 @@ static const struct file_operations switchtec_fops = {
.read = switchtec_dev_read,
.poll = switchtec_dev_poll,
.unlocked_ioctl = switchtec_dev_ioctl,
- .compat_ioctl = switchtec_dev_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
};
static void link_event_work(struct work_struct *work)
diff --git a/drivers/platform/x86/wmi.c b/drivers/platform/x86/wmi.c
index 04791ea5d97b..e4d0697e07d6 100644
--- a/drivers/platform/x86/wmi.c
+++ b/drivers/platform/x86/wmi.c
@@ -886,7 +886,7 @@ static const struct file_operations wmi_fops = {
.read = wmi_char_read,
.open = wmi_char_open,
.unlocked_ioctl = wmi_ioctl,
- .compat_ioctl = wmi_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
};
static int wmi_dev_probe(struct device *dev)
diff --git a/drivers/rpmsg/rpmsg_char.c b/drivers/rpmsg/rpmsg_char.c
index a76b963a7e50..02aefb2b2d47 100644
--- a/drivers/rpmsg/rpmsg_char.c
+++ b/drivers/rpmsg/rpmsg_char.c
@@ -285,7 +285,7 @@ static const struct file_operations rpmsg_eptdev_fops = {
.write = rpmsg_eptdev_write,
.poll = rpmsg_eptdev_poll,
.unlocked_ioctl = rpmsg_eptdev_ioctl,
- .compat_ioctl = rpmsg_eptdev_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
};
static ssize_t name_show(struct device *dev, struct device_attribute *attr,
@@ -446,7 +446,7 @@ static const struct file_operations rpmsg_ctrldev_fops = {
.open = rpmsg_ctrldev_open,
.release = rpmsg_ctrldev_release,
.unlocked_ioctl = rpmsg_ctrldev_ioctl,
- .compat_ioctl = rpmsg_ctrldev_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
};
static void rpmsg_ctrldev_release_device(struct device *dev)
diff --git a/drivers/sbus/char/display7seg.c b/drivers/sbus/char/display7seg.c
index 5c8ed7350a04..064fe7247eb2 100644
--- a/drivers/sbus/char/display7seg.c
+++ b/drivers/sbus/char/display7seg.c
@@ -155,7 +155,7 @@ static long d7s_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
static const struct file_operations d7s_fops = {
.owner = THIS_MODULE,
.unlocked_ioctl = d7s_ioctl,
- .compat_ioctl = d7s_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
.open = d7s_open,
.release = d7s_release,
.llseek = noop_llseek,
diff --git a/drivers/sbus/char/envctrl.c b/drivers/sbus/char/envctrl.c
index 56e962a01493..a26665ccea56 100644
--- a/drivers/sbus/char/envctrl.c
+++ b/drivers/sbus/char/envctrl.c
@@ -714,9 +714,7 @@ static const struct file_operations envctrl_fops = {
.owner = THIS_MODULE,
.read = envctrl_read,
.unlocked_ioctl = envctrl_ioctl,
-#ifdef CONFIG_COMPAT
- .compat_ioctl = envctrl_ioctl,
-#endif
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
.open = envctrl_open,
.release = envctrl_release,
.llseek = noop_llseek,
diff --git a/drivers/scsi/3w-xxxx.c b/drivers/scsi/3w-xxxx.c
index 471366945bd4..86c9f22a152f 100644
--- a/drivers/scsi/3w-xxxx.c
+++ b/drivers/scsi/3w-xxxx.c
@@ -1047,9 +1047,7 @@ static int tw_chrdev_open(struct inode *inode, struct file *file)
static const struct file_operations tw_fops = {
.owner = THIS_MODULE,
.unlocked_ioctl = tw_chrdev_ioctl,
-#ifdef CONFIG_COMPAT
- .compat_ioctl = tw_chrdev_ioctl,
-#endif
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
.open = tw_chrdev_open,
.release = NULL,
.llseek = noop_llseek,
diff --git a/drivers/scsi/cxlflash/main.c b/drivers/scsi/cxlflash/main.c
index 6637116529aa..d968efeb50e8 100644
--- a/drivers/scsi/cxlflash/main.c
+++ b/drivers/scsi/cxlflash/main.c
@@ -3596,7 +3596,7 @@ static const struct file_operations cxlflash_chr_fops = {
.owner = THIS_MODULE,
.open = cxlflash_chr_open,
.unlocked_ioctl = cxlflash_chr_ioctl,
- .compat_ioctl = cxlflash_chr_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
};
/**
diff --git a/drivers/scsi/esas2r/esas2r_main.c b/drivers/scsi/esas2r/esas2r_main.c
index c07118617d89..95142292e702 100644
--- a/drivers/scsi/esas2r/esas2r_main.c
+++ b/drivers/scsi/esas2r/esas2r_main.c
@@ -614,7 +614,7 @@ static int __init esas2r_init(void)
/* Handle ioctl calls to "/proc/scsi/esas2r/ATTOnode" */
static const struct file_operations esas2r_proc_fops = {
- .compat_ioctl = esas2r_proc_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
.unlocked_ioctl = esas2r_proc_ioctl,
};
diff --git a/drivers/scsi/pmcraid.c b/drivers/scsi/pmcraid.c
index 4e86994e10e8..8a8c73d3bdad 100644
--- a/drivers/scsi/pmcraid.c
+++ b/drivers/scsi/pmcraid.c
@@ -3999,9 +3999,7 @@ static const struct file_operations pmcraid_fops = {
.open = pmcraid_chr_open,
.fasync = pmcraid_chr_fasync,
.unlocked_ioctl = pmcraid_chr_ioctl,
-#ifdef CONFIG_COMPAT
- .compat_ioctl = pmcraid_chr_ioctl,
-#endif
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
.llseek = noop_llseek,
};
diff --git a/drivers/staging/android/ion/ion.c b/drivers/staging/android/ion/ion.c
index 99073325b0c0..ef727c235392 100644
--- a/drivers/staging/android/ion/ion.c
+++ b/drivers/staging/android/ion/ion.c
@@ -484,9 +484,7 @@ int ion_query_heaps(struct ion_heap_query *query)
static const struct file_operations ion_fops = {
.owner = THIS_MODULE,
.unlocked_ioctl = ion_ioctl,
-#ifdef CONFIG_COMPAT
- .compat_ioctl = ion_ioctl,
-#endif
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
};
static int debug_shrink_set(void *data, u64 val)
diff --git a/drivers/staging/vme/devices/vme_user.c b/drivers/staging/vme/devices/vme_user.c
index 6a33aaa1a49f..568700ffd2f2 100644
--- a/drivers/staging/vme/devices/vme_user.c
+++ b/drivers/staging/vme/devices/vme_user.c
@@ -494,7 +494,7 @@ static const struct file_operations vme_user_fops = {
.write = vme_user_write,
.llseek = vme_user_llseek,
.unlocked_ioctl = vme_user_unlocked_ioctl,
- .compat_ioctl = vme_user_unlocked_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
.mmap = vme_user_mmap,
};
diff --git a/drivers/tee/tee_core.c b/drivers/tee/tee_core.c
index dd46b758852a..cb79f28be894 100644
--- a/drivers/tee/tee_core.c
+++ b/drivers/tee/tee_core.c
@@ -670,7 +670,7 @@ static const struct file_operations tee_fops = {
.open = tee_open,
.release = tee_release,
.unlocked_ioctl = tee_ioctl,
- .compat_ioctl = tee_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
};
static void tee_release_device(struct device *dev)
diff --git a/drivers/usb/class/cdc-wdm.c b/drivers/usb/class/cdc-wdm.c
index bec581fb7c63..6e4998c8e64f 100644
--- a/drivers/usb/class/cdc-wdm.c
+++ b/drivers/usb/class/cdc-wdm.c
@@ -724,7 +724,7 @@ static const struct file_operations wdm_fops = {
.release = wdm_release,
.poll = wdm_poll,
.unlocked_ioctl = wdm_ioctl,
- .compat_ioctl = wdm_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
.llseek = noop_llseek,
};
diff --git a/drivers/usb/class/usbtmc.c b/drivers/usb/class/usbtmc.c
index 83ffa5a14c3d..d5da47c4c462 100644
--- a/drivers/usb/class/usbtmc.c
+++ b/drivers/usb/class/usbtmc.c
@@ -1460,9 +1460,7 @@ static const struct file_operations fops = {
.open = usbtmc_open,
.release = usbtmc_release,
.unlocked_ioctl = usbtmc_ioctl,
-#ifdef CONFIG_COMPAT
- .compat_ioctl = usbtmc_ioctl,
-#endif
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
.fasync = usbtmc_fasync,
.poll = usbtmc_poll,
.llseek = default_llseek,
diff --git a/drivers/video/fbdev/ps3fb.c b/drivers/video/fbdev/ps3fb.c
index 5ed2db39d823..f9f8ffaf1c4a 100644
--- a/drivers/video/fbdev/ps3fb.c
+++ b/drivers/video/fbdev/ps3fb.c
@@ -949,7 +949,7 @@ static struct fb_ops ps3fb_ops = {
.fb_mmap = ps3fb_mmap,
.fb_blank = ps3fb_blank,
.fb_ioctl = ps3fb_ioctl,
- .fb_compat_ioctl = ps3fb_ioctl
+ .fb_compat_ioctl = generic_compat_ioctl_ptrarg,
};
static const struct fb_fix_screeninfo ps3fb_fix = {
diff --git a/drivers/virt/fsl_hypervisor.c b/drivers/virt/fsl_hypervisor.c
index 8ba726e600e9..406b7e492214 100644
--- a/drivers/virt/fsl_hypervisor.c
+++ b/drivers/virt/fsl_hypervisor.c
@@ -703,7 +703,7 @@ static const struct file_operations fsl_hv_fops = {
.poll = fsl_hv_poll,
.read = fsl_hv_read,
.unlocked_ioctl = fsl_hv_ioctl,
- .compat_ioctl = fsl_hv_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
};
static struct miscdevice fsl_hv_misc_dev = {
diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index 6601c9aa5e35..2b5a8ad86305 100644
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -2352,7 +2352,7 @@ static const struct super_operations btrfs_super_ops = {
static const struct file_operations btrfs_ctl_fops = {
.open = btrfs_control_open,
.unlocked_ioctl = btrfs_control_ioctl,
- .compat_ioctl = btrfs_control_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
.owner = THIS_MODULE,
.llseek = noop_llseek,
};
diff --git a/fs/ceph/dir.c b/fs/ceph/dir.c
index da73f29d7faa..eb869fe6774d 100644
--- a/fs/ceph/dir.c
+++ b/fs/ceph/dir.c
@@ -1489,7 +1489,7 @@ const struct file_operations ceph_dir_fops = {
.open = ceph_open,
.release = ceph_release,
.unlocked_ioctl = ceph_ioctl,
- .compat_ioctl = ceph_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
.fsync = ceph_fsync,
.lock = ceph_lock,
.flock = ceph_flock,
diff --git a/fs/ceph/file.c b/fs/ceph/file.c
index 92ab20433682..85094042cfac 100644
--- a/fs/ceph/file.c
+++ b/fs/ceph/file.c
@@ -1842,7 +1842,7 @@ const struct file_operations ceph_file_fops = {
.splice_read = generic_file_splice_read,
.splice_write = iter_file_splice_write,
.unlocked_ioctl = ceph_ioctl,
- .compat_ioctl = ceph_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
.fallocate = ceph_fallocate,
};
diff --git a/fs/fuse/dev.c b/fs/fuse/dev.c
index 11ea2c4a38ab..a6d4a24963ed 100644
--- a/fs/fuse/dev.c
+++ b/fs/fuse/dev.c
@@ -2258,7 +2258,7 @@ const struct file_operations fuse_dev_operations = {
.release = fuse_dev_release,
.fasync = fuse_dev_fasync,
.unlocked_ioctl = fuse_dev_ioctl,
- .compat_ioctl = fuse_dev_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
};
EXPORT_SYMBOL_GPL(fuse_dev_operations);
diff --git a/fs/notify/fanotify/fanotify_user.c b/fs/notify/fanotify/fanotify_user.c
index 69054886915b..fc4193b384cf 100644
--- a/fs/notify/fanotify/fanotify_user.c
+++ b/fs/notify/fanotify/fanotify_user.c
@@ -447,7 +447,7 @@ static const struct file_operations fanotify_fops = {
.fasync = NULL,
.release = fanotify_release,
.unlocked_ioctl = fanotify_ioctl,
- .compat_ioctl = fanotify_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
.llseek = noop_llseek,
};
diff --git a/fs/userfaultfd.c b/fs/userfaultfd.c
index bfa0ec69f924..bc9118b58a8a 100644
--- a/fs/userfaultfd.c
+++ b/fs/userfaultfd.c
@@ -1878,7 +1878,7 @@ static const struct file_operations userfaultfd_fops = {
.poll = userfaultfd_poll,
.read = userfaultfd_read,
.unlocked_ioctl = userfaultfd_ioctl,
- .compat_ioctl = userfaultfd_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
.llseek = noop_llseek,
};
diff --git a/net/rfkill/core.c b/net/rfkill/core.c
index 1355f5ca8d22..ba68b53f58ab 100644
--- a/net/rfkill/core.c
+++ b/net/rfkill/core.c
@@ -1323,7 +1323,7 @@ static const struct file_operations rfkill_fops = {
.release = rfkill_fop_release,
#ifdef CONFIG_RFKILL_INPUT
.unlocked_ioctl = rfkill_fop_ioctl,
- .compat_ioctl = rfkill_fop_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
#endif
.llseek = no_llseek,
};
--
2.18.0
^ permalink raw reply related [flat|nested] 141+ messages in thread
* [PATCH v2 06/17] compat_ioctl: move rtc handling into rtc-dev.c
2018-09-12 15:08 ` Arnd Bergmann
` (3 preceding siblings ...)
(?)
@ 2018-09-12 15:08 ` Arnd Bergmann
2018-09-12 20:00 ` Alexandre Belloni
-1 siblings, 1 reply; 141+ messages in thread
From: Arnd Bergmann @ 2018-09-12 15:08 UTC (permalink / raw)
To: viro
Cc: linux-fsdevel, Arnd Bergmann, Alessandro Zummo,
Alexandre Belloni, linux-rtc, linux-kernel
We no longer need the rtc compat handling to be in common code, now that
all drivers are either moved to the rtc-class framework, or (rarely)
exist in drivers/char for architectures without compat mode (m68k,
alpha and ia64, respectively).
I checked the list of ioctl commands in drivers, and the ones that are
not already handled are all compatible, again with the one exception of
m68k driver, which implements RTC_PLL_GET and RTC_PLL_SET, but has no
compat mode.
Since the ioctl commands are either compatible or differ in both structure
and command code between 32-bit and 64-bit, we can merge the compat
handler into the native one and just implement the two common compat
commands (RTC_IRQP_READ, RTC_IRQP_SET) there.
The old conversion handler also deals with RTC_EPOCH_READ and
RTC_EPOCH_SET, which are not handled in rtc-dev.c but only in
a single device driver (rtc-vr41xx), so I'm adding the compat
version in the same place. I don't expect other drivers to need
those commands in the future.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
v2: merge compat handler into ioctl function to avoid the
compat_alloc_user_space() roundtrip, based on feedback
from Al Viro.
---
drivers/rtc/rtc-dev.c | 13 +++++++++-
drivers/rtc/rtc-vr41xx.c | 10 ++++++++
fs/compat_ioctl.c | 54 ----------------------------------------
3 files changed, 22 insertions(+), 55 deletions(-)
diff --git a/drivers/rtc/rtc-dev.c b/drivers/rtc/rtc-dev.c
index 43d962a9c210..ccd5b1795e20 100644
--- a/drivers/rtc/rtc-dev.c
+++ b/drivers/rtc/rtc-dev.c
@@ -13,6 +13,7 @@
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+#include <linux/compat.h>
#include <linux/module.h>
#include <linux/rtc.h>
#include <linux/sched/signal.h>
@@ -364,10 +365,19 @@ static long rtc_dev_ioctl(struct file *file,
mutex_unlock(&rtc->ops_lock);
return rtc_update_irq_enable(rtc, 0);
+#ifdef CONFIG_COMPAT
+#define RTC_IRQP_SET32 _IOW('p', 0x0c, compat_ulong_t)
+#define RTC_IRQP_READ32 _IOR('p', 0x0b, compat_ulong_t)
+ case RTC_IRQP_SET32:
+ err = rtc_irq_set_freq(rtc, arg);
+ break;
+ case RTC_IRQP_READ32:
+ err = put_user(rtc->irq_freq, (unsigned int __user *)uarg);
+ break;
+#endif
case RTC_IRQP_SET:
err = rtc_irq_set_freq(rtc, arg);
break;
-
case RTC_IRQP_READ:
err = put_user(rtc->irq_freq, (unsigned long __user *)uarg);
break;
@@ -439,6 +449,7 @@ static const struct file_operations rtc_dev_fops = {
.read = rtc_dev_read,
.poll = rtc_dev_poll,
.unlocked_ioctl = rtc_dev_ioctl,
+ .compat_ioctl = generic_compat_ioctl_ptrarg,
.open = rtc_dev_open,
.release = rtc_dev_release,
.fasync = rtc_dev_fasync,
diff --git a/drivers/rtc/rtc-vr41xx.c b/drivers/rtc/rtc-vr41xx.c
index 70f013e692b0..1d90bde59d21 100644
--- a/drivers/rtc/rtc-vr41xx.c
+++ b/drivers/rtc/rtc-vr41xx.c
@@ -17,6 +17,7 @@
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
+#include <linux/compat.h>
#include <linux/err.h>
#include <linux/fs.h>
#include <linux/init.h>
@@ -79,6 +80,10 @@ static void __iomem *rtc2_base;
#define rtc2_read(offset) readw(rtc2_base + (offset))
#define rtc2_write(offset, value) writew((value), rtc2_base + (offset))
+/* 32-bit compat for ioctls that nobody else uses */
+#define RTC_EPOCH_READ32 _IOR('p', 0x0d, compat_ulong_t)
+#define RTC_EPOCH_SET32 _IOW('p', 0x0e, compat_ulong_t)
+
static unsigned long epoch = 1970; /* Jan 1 1970 00:00:00 */
static DEFINE_SPINLOCK(rtc_lock);
@@ -195,6 +200,11 @@ static int vr41xx_rtc_ioctl(struct device *dev, unsigned int cmd, unsigned long
switch (cmd) {
case RTC_EPOCH_READ:
return put_user(epoch, (unsigned long __user *)arg);
+#ifdef CONFIG_COMPAT
+ case RTC_EPOCH_READ32:
+ return put_user(epoch, (unsigned int __user *)arg);
+ case RTC_EPOCH_SET32:
+#endif
case RTC_EPOCH_SET:
/* Doesn't support before 1900 */
if (arg < 1900)
diff --git a/fs/compat_ioctl.c b/fs/compat_ioctl.c
index 2d7c7e149083..312b52b4e974 100644
--- a/fs/compat_ioctl.c
+++ b/fs/compat_ioctl.c
@@ -46,7 +46,6 @@
#include <linux/raw.h>
#include <linux/blkdev.h>
#include <linux/elevator.h>
-#include <linux/rtc.h>
#include <linux/pci.h>
#include <linux/serial.h>
#include <linux/if_tun.h>
@@ -633,37 +632,6 @@ static int serial_struct_ioctl(struct file *file,
return err;
}
-#define RTC_IRQP_READ32 _IOR('p', 0x0b, compat_ulong_t)
-#define RTC_IRQP_SET32 _IOW('p', 0x0c, compat_ulong_t)
-#define RTC_EPOCH_READ32 _IOR('p', 0x0d, compat_ulong_t)
-#define RTC_EPOCH_SET32 _IOW('p', 0x0e, compat_ulong_t)
-
-static int rtc_ioctl(struct file *file,
- unsigned cmd, void __user *argp)
-{
- unsigned long __user *valp = compat_alloc_user_space(sizeof(*valp));
- int ret;
-
- if (valp == NULL)
- return -EFAULT;
- switch (cmd) {
- case RTC_IRQP_READ32:
- case RTC_EPOCH_READ32:
- ret = do_ioctl(file, (cmd == RTC_IRQP_READ32) ?
- RTC_IRQP_READ : RTC_EPOCH_READ,
- (unsigned long)valp);
- if (ret)
- return ret;
- return convert_in_user(valp, (unsigned int __user *)argp);
- case RTC_IRQP_SET32:
- return do_ioctl(file, RTC_IRQP_SET, (unsigned long)argp);
- case RTC_EPOCH_SET32:
- return do_ioctl(file, RTC_EPOCH_SET, (unsigned long)argp);
- }
-
- return -ENOIOCTLCMD;
-}
-
/* on ia32 l_start is on a 32-bit boundary */
#if defined(CONFIG_IA64) || defined(CONFIG_X86_64)
struct space_resv_32 {
@@ -816,21 +784,6 @@ COMPATIBLE_IOCTL(SCSI_IOCTL_GET_PCI)
/* Big V (don't complain on serial console) */
IGNORE_IOCTL(VT_OPENQRY)
IGNORE_IOCTL(VT_GETMODE)
-/* Little p (/dev/rtc, /dev/envctrl, etc.) */
-COMPATIBLE_IOCTL(RTC_AIE_ON)
-COMPATIBLE_IOCTL(RTC_AIE_OFF)
-COMPATIBLE_IOCTL(RTC_UIE_ON)
-COMPATIBLE_IOCTL(RTC_UIE_OFF)
-COMPATIBLE_IOCTL(RTC_PIE_ON)
-COMPATIBLE_IOCTL(RTC_PIE_OFF)
-COMPATIBLE_IOCTL(RTC_WIE_ON)
-COMPATIBLE_IOCTL(RTC_WIE_OFF)
-COMPATIBLE_IOCTL(RTC_ALM_SET)
-COMPATIBLE_IOCTL(RTC_ALM_READ)
-COMPATIBLE_IOCTL(RTC_RD_TIME)
-COMPATIBLE_IOCTL(RTC_SET_TIME)
-COMPATIBLE_IOCTL(RTC_WKALM_SET)
-COMPATIBLE_IOCTL(RTC_WKALM_RD)
/*
* These two are only for the sbus rtc driver, but
* hwclock tries them on every rtc device first when
@@ -1307,13 +1260,6 @@ static long do_ioctl_trans(unsigned int cmd,
case TIOCGSERIAL:
case TIOCSSERIAL:
return serial_struct_ioctl(file, cmd, argp);
- /* Not implemented in the native kernel */
- case RTC_IRQP_READ32:
- case RTC_IRQP_SET32:
- case RTC_EPOCH_READ32:
- case RTC_EPOCH_SET32:
- return rtc_ioctl(file, cmd, argp);
-
/* dvb */
case VIDEO_GET_EVENT:
return do_video_get_event(file, cmd, argp);
--
2.18.0
^ permalink raw reply related [flat|nested] 141+ messages in thread
* Re: [PATCH v2 06/17] compat_ioctl: move rtc handling into rtc-dev.c
2018-09-12 15:08 ` [PATCH v2 06/17] compat_ioctl: move rtc handling into rtc-dev.c Arnd Bergmann
@ 2018-09-12 20:00 ` Alexandre Belloni
0 siblings, 0 replies; 141+ messages in thread
From: Alexandre Belloni @ 2018-09-12 20:00 UTC (permalink / raw)
To: Arnd Bergmann
Cc: viro, linux-fsdevel, Alessandro Zummo, linux-rtc, linux-kernel
On 12/09/2018 17:08:53+0200, Arnd Bergmann wrote:
> We no longer need the rtc compat handling to be in common code, now that
> all drivers are either moved to the rtc-class framework, or (rarely)
> exist in drivers/char for architectures without compat mode (m68k,
> alpha and ia64, respectively).
>
> I checked the list of ioctl commands in drivers, and the ones that are
> not already handled are all compatible, again with the one exception of
> m68k driver, which implements RTC_PLL_GET and RTC_PLL_SET, but has no
> compat mode.
>
> Since the ioctl commands are either compatible or differ in both structure
> and command code between 32-bit and 64-bit, we can merge the compat
> handler into the native one and just implement the two common compat
> commands (RTC_IRQP_READ, RTC_IRQP_SET) there.
>
> The old conversion handler also deals with RTC_EPOCH_READ and
> RTC_EPOCH_SET, which are not handled in rtc-dev.c but only in
> a single device driver (rtc-vr41xx), so I'm adding the compat
> version in the same place. I don't expect other drivers to need
> those commands in the future.
>
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
> ---
> v2: merge compat handler into ioctl function to avoid the
> compat_alloc_user_space() roundtrip, based on feedback
> from Al Viro.
> ---
> drivers/rtc/rtc-dev.c | 13 +++++++++-
> drivers/rtc/rtc-vr41xx.c | 10 ++++++++
> fs/compat_ioctl.c | 54 ----------------------------------------
> 3 files changed, 22 insertions(+), 55 deletions(-)
>
> diff --git a/drivers/rtc/rtc-dev.c b/drivers/rtc/rtc-dev.c
> index 43d962a9c210..ccd5b1795e20 100644
> --- a/drivers/rtc/rtc-dev.c
> +++ b/drivers/rtc/rtc-dev.c
> @@ -13,6 +13,7 @@
>
> #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
>
> +#include <linux/compat.h>
> #include <linux/module.h>
> #include <linux/rtc.h>
> #include <linux/sched/signal.h>
> @@ -364,10 +365,19 @@ static long rtc_dev_ioctl(struct file *file,
> mutex_unlock(&rtc->ops_lock);
> return rtc_update_irq_enable(rtc, 0);
>
> +#ifdef CONFIG_COMPAT
> +#define RTC_IRQP_SET32 _IOW('p', 0x0c, compat_ulong_t)
> +#define RTC_IRQP_READ32 _IOR('p', 0x0b, compat_ulong_t)
> + case RTC_IRQP_SET32:
> + err = rtc_irq_set_freq(rtc, arg);
> + break;
> + case RTC_IRQP_READ32:
> + err = put_user(rtc->irq_freq, (unsigned int __user *)uarg);
> + break;
> +#endif
> case RTC_IRQP_SET:
> err = rtc_irq_set_freq(rtc, arg);
> break;
> -
> case RTC_IRQP_READ:
> err = put_user(rtc->irq_freq, (unsigned long __user *)uarg);
> break;
> @@ -439,6 +449,7 @@ static const struct file_operations rtc_dev_fops = {
> .read = rtc_dev_read,
> .poll = rtc_dev_poll,
> .unlocked_ioctl = rtc_dev_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .open = rtc_dev_open,
> .release = rtc_dev_release,
> .fasync = rtc_dev_fasync,
> diff --git a/drivers/rtc/rtc-vr41xx.c b/drivers/rtc/rtc-vr41xx.c
> index 70f013e692b0..1d90bde59d21 100644
> --- a/drivers/rtc/rtc-vr41xx.c
> +++ b/drivers/rtc/rtc-vr41xx.c
> @@ -17,6 +17,7 @@
> * along with this program; if not, write to the Free Software
> * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
> */
> +#include <linux/compat.h>
> #include <linux/err.h>
> #include <linux/fs.h>
> #include <linux/init.h>
> @@ -79,6 +80,10 @@ static void __iomem *rtc2_base;
> #define rtc2_read(offset) readw(rtc2_base + (offset))
> #define rtc2_write(offset, value) writew((value), rtc2_base + (offset))
>
> +/* 32-bit compat for ioctls that nobody else uses */
> +#define RTC_EPOCH_READ32 _IOR('p', 0x0d, compat_ulong_t)
> +#define RTC_EPOCH_SET32 _IOW('p', 0x0e, compat_ulong_t)
> +
> static unsigned long epoch = 1970; /* Jan 1 1970 00:00:00 */
>
> static DEFINE_SPINLOCK(rtc_lock);
> @@ -195,6 +200,11 @@ static int vr41xx_rtc_ioctl(struct device *dev, unsigned int cmd, unsigned long
> switch (cmd) {
> case RTC_EPOCH_READ:
> return put_user(epoch, (unsigned long __user *)arg);
> +#ifdef CONFIG_COMPAT
> + case RTC_EPOCH_READ32:
> + return put_user(epoch, (unsigned int __user *)arg);
> + case RTC_EPOCH_SET32:
> +#endif
> case RTC_EPOCH_SET:
> /* Doesn't support before 1900 */
> if (arg < 1900)
> diff --git a/fs/compat_ioctl.c b/fs/compat_ioctl.c
> index 2d7c7e149083..312b52b4e974 100644
> --- a/fs/compat_ioctl.c
> +++ b/fs/compat_ioctl.c
> @@ -46,7 +46,6 @@
> #include <linux/raw.h>
> #include <linux/blkdev.h>
> #include <linux/elevator.h>
> -#include <linux/rtc.h>
> #include <linux/pci.h>
> #include <linux/serial.h>
> #include <linux/if_tun.h>
> @@ -633,37 +632,6 @@ static int serial_struct_ioctl(struct file *file,
> return err;
> }
>
> -#define RTC_IRQP_READ32 _IOR('p', 0x0b, compat_ulong_t)
> -#define RTC_IRQP_SET32 _IOW('p', 0x0c, compat_ulong_t)
> -#define RTC_EPOCH_READ32 _IOR('p', 0x0d, compat_ulong_t)
> -#define RTC_EPOCH_SET32 _IOW('p', 0x0e, compat_ulong_t)
> -
> -static int rtc_ioctl(struct file *file,
> - unsigned cmd, void __user *argp)
> -{
> - unsigned long __user *valp = compat_alloc_user_space(sizeof(*valp));
> - int ret;
> -
> - if (valp == NULL)
> - return -EFAULT;
> - switch (cmd) {
> - case RTC_IRQP_READ32:
> - case RTC_EPOCH_READ32:
> - ret = do_ioctl(file, (cmd == RTC_IRQP_READ32) ?
> - RTC_IRQP_READ : RTC_EPOCH_READ,
> - (unsigned long)valp);
> - if (ret)
> - return ret;
> - return convert_in_user(valp, (unsigned int __user *)argp);
> - case RTC_IRQP_SET32:
> - return do_ioctl(file, RTC_IRQP_SET, (unsigned long)argp);
> - case RTC_EPOCH_SET32:
> - return do_ioctl(file, RTC_EPOCH_SET, (unsigned long)argp);
> - }
> -
> - return -ENOIOCTLCMD;
> -}
> -
> /* on ia32 l_start is on a 32-bit boundary */
> #if defined(CONFIG_IA64) || defined(CONFIG_X86_64)
> struct space_resv_32 {
> @@ -816,21 +784,6 @@ COMPATIBLE_IOCTL(SCSI_IOCTL_GET_PCI)
> /* Big V (don't complain on serial console) */
> IGNORE_IOCTL(VT_OPENQRY)
> IGNORE_IOCTL(VT_GETMODE)
> -/* Little p (/dev/rtc, /dev/envctrl, etc.) */
> -COMPATIBLE_IOCTL(RTC_AIE_ON)
> -COMPATIBLE_IOCTL(RTC_AIE_OFF)
> -COMPATIBLE_IOCTL(RTC_UIE_ON)
> -COMPATIBLE_IOCTL(RTC_UIE_OFF)
> -COMPATIBLE_IOCTL(RTC_PIE_ON)
> -COMPATIBLE_IOCTL(RTC_PIE_OFF)
> -COMPATIBLE_IOCTL(RTC_WIE_ON)
> -COMPATIBLE_IOCTL(RTC_WIE_OFF)
> -COMPATIBLE_IOCTL(RTC_ALM_SET)
> -COMPATIBLE_IOCTL(RTC_ALM_READ)
> -COMPATIBLE_IOCTL(RTC_RD_TIME)
> -COMPATIBLE_IOCTL(RTC_SET_TIME)
> -COMPATIBLE_IOCTL(RTC_WKALM_SET)
> -COMPATIBLE_IOCTL(RTC_WKALM_RD)
> /*
> * These two are only for the sbus rtc driver, but
> * hwclock tries them on every rtc device first when
> @@ -1307,13 +1260,6 @@ static long do_ioctl_trans(unsigned int cmd,
> case TIOCGSERIAL:
> case TIOCSSERIAL:
> return serial_struct_ioctl(file, cmd, argp);
> - /* Not implemented in the native kernel */
> - case RTC_IRQP_READ32:
> - case RTC_IRQP_SET32:
> - case RTC_EPOCH_READ32:
> - case RTC_EPOCH_SET32:
> - return rtc_ioctl(file, cmd, argp);
> -
> /* dvb */
> case VIDEO_GET_EVENT:
> return do_video_get_event(file, cmd, argp);
> --
> 2.18.0
>
--
Alexandre Belloni, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com
^ permalink raw reply [flat|nested] 141+ messages in thread
* [PATCH v2 07/17] compat_ioctl: move tape handling into drivers
2018-09-12 15:08 ` Arnd Bergmann
` (4 preceding siblings ...)
(?)
@ 2018-09-12 15:08 ` Arnd Bergmann
-1 siblings, 0 replies; 141+ messages in thread
From: Arnd Bergmann @ 2018-09-12 15:08 UTC (permalink / raw)
To: viro
Cc: linux-fsdevel, Arnd Bergmann, David S. Miller,
Martin Schwidefsky, Heiko Carstens, Willem Riede,
James E.J. Bottomley, Martin K. Petersen, Kai Mäkisara,
Jens Axboe, Hannes Reinecke, Colin Ian King, linux-kernel,
linux-ide, linux-s390, osst-users, linux-scsi
MTIOCPOS and MTIOCGET are incompatible between 32-bit and 64-bit user
space, and traditionally have been translated in fs/compat_ioctl.c.
To get rid of that translation handler, move a corresponding
implementation into each of the four drivers implementing those commands.
The interesting part of that is now in a new linux/mtio.h header that
wraps the existing uapi/linux/mtio.h header and provides an abstraction
to let drivers handle both cases easily.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
drivers/ide/ide-tape.c | 31 +++++++++++----
drivers/s390/char/tape_char.c | 41 ++++++++------------
drivers/scsi/osst.c | 34 ++++++++++-------
drivers/scsi/st.c | 35 ++++++++++-------
fs/compat_ioctl.c | 71 -----------------------------------
include/linux/mtio.h | 58 ++++++++++++++++++++++++++++
6 files changed, 137 insertions(+), 133 deletions(-)
create mode 100644 include/linux/mtio.h
diff --git a/drivers/ide/ide-tape.c b/drivers/ide/ide-tape.c
index 34c1165226a4..137febf3658d 100644
--- a/drivers/ide/ide-tape.c
+++ b/drivers/ide/ide-tape.c
@@ -19,6 +19,7 @@
#define IDETAPE_VERSION "1.20"
+#include <linux/compat.h>
#include <linux/module.h>
#include <linux/types.h>
#include <linux/string.h>
@@ -1368,7 +1369,7 @@ static int idetape_mtioctop(ide_drive_t *drive, short mt_op, int mt_count)
* ide-tape ioctls are supported on both interfaces.
*/
static long do_idetape_chrdev_ioctl(struct file *file,
- unsigned int cmd, unsigned long arg)
+ unsigned int cmd, unsigned long arg, bool compat)
{
struct ide_tape_obj *tape = file->private_data;
ide_drive_t *drive = tape->drive;
@@ -1407,14 +1408,10 @@ static long do_idetape_chrdev_ioctl(struct file *file,
if (tape->drv_write_prot)
mtget.mt_gstat |= GMT_WR_PROT(0xffffffff);
- if (copy_to_user(argp, &mtget, sizeof(struct mtget)))
- return -EFAULT;
- return 0;
+ return put_user_mtget(argp, &mtget, compat);
case MTIOCPOS:
mtpos.mt_blkno = position / tape->user_bs_factor - block_offset;
- if (copy_to_user(argp, &mtpos, sizeof(struct mtpos)))
- return -EFAULT;
- return 0;
+ return put_user_mtpos(argp, &mtpos, compat);
default:
if (tape->chrdev_dir == IDETAPE_DIR_READ)
ide_tape_discard_merge_buffer(drive, 1);
@@ -1427,7 +1424,23 @@ static long idetape_chrdev_ioctl(struct file *file,
{
long ret;
mutex_lock(&ide_tape_mutex);
- ret = do_idetape_chrdev_ioctl(file, cmd, arg);
+ ret = do_idetape_chrdev_ioctl(file, cmd, arg, false);
+ mutex_unlock(&ide_tape_mutex);
+ return ret;
+}
+
+static long idetape_chrdev_compat_ioctl(struct file *file,
+ unsigned int cmd, unsigned long arg)
+{
+ long ret;
+
+ if (cmd == MTIOCPOS32)
+ cmd = MTIOCPOS;
+ else if (cmd == MTIOCGET32)
+ cmd = MTIOCGET;
+
+ mutex_lock(&ide_tape_mutex);
+ ret = do_idetape_chrdev_ioctl(file, cmd, arg, true);
mutex_unlock(&ide_tape_mutex);
return ret;
}
@@ -1886,6 +1899,8 @@ static const struct file_operations idetape_fops = {
.read = idetape_chrdev_read,
.write = idetape_chrdev_write,
.unlocked_ioctl = idetape_chrdev_ioctl,
+ .compat_ioctl = IS_ENABLED(CONFIG_COMPAT) ?
+ idetape_chrdev_compat_ioctl : NULL,
.open = idetape_chrdev_open,
.release = idetape_chrdev_release,
.llseek = noop_llseek,
diff --git a/drivers/s390/char/tape_char.c b/drivers/s390/char/tape_char.c
index fc206c9d1c56..522ca9b836e3 100644
--- a/drivers/s390/char/tape_char.c
+++ b/drivers/s390/char/tape_char.c
@@ -341,14 +341,14 @@ tapechar_release(struct inode *inode, struct file *filp)
*/
static int
__tapechar_ioctl(struct tape_device *device,
- unsigned int no, unsigned long data)
+ unsigned int no, void __user *data, bool compat)
{
int rc;
if (no == MTIOCTOP) {
struct mtop op;
- if (copy_from_user(&op, (char __user *) data, sizeof(op)) != 0)
+ if (copy_from_user(&op, data, sizeof(op)) != 0)
return -EFAULT;
if (op.mt_count < 0)
return -EINVAL;
@@ -392,9 +392,7 @@ __tapechar_ioctl(struct tape_device *device,
if (rc < 0)
return rc;
pos.mt_blkno = rc;
- if (copy_to_user((char __user *) data, &pos, sizeof(pos)) != 0)
- return -EFAULT;
- return 0;
+ return put_user_mtpos(data, &pos, compat);
}
if (no == MTIOCGET) {
/* MTIOCGET: query the tape drive status. */
@@ -424,15 +422,12 @@ __tapechar_ioctl(struct tape_device *device,
get.mt_blkno = rc;
}
- if (copy_to_user((char __user *) data, &get, sizeof(get)) != 0)
- return -EFAULT;
-
- return 0;
+ return put_user_mtget(data, &get, compat);
}
/* Try the discipline ioctl function. */
if (device->discipline->ioctl_fn == NULL)
return -EINVAL;
- return device->discipline->ioctl_fn(device, no, data);
+ return device->discipline->ioctl_fn(device, no, (unsigned long)data);
}
static long
@@ -445,7 +440,7 @@ tapechar_ioctl(struct file *filp, unsigned int no, unsigned long data)
device = (struct tape_device *) filp->private_data;
mutex_lock(&device->mutex);
- rc = __tapechar_ioctl(device, no, data);
+ rc = __tapechar_ioctl(device, no, (void __user *)data, false);
mutex_unlock(&device->mutex);
return rc;
}
@@ -455,23 +450,17 @@ static long
tapechar_compat_ioctl(struct file *filp, unsigned int no, unsigned long data)
{
struct tape_device *device = filp->private_data;
- int rval = -ENOIOCTLCMD;
- unsigned long argp;
+ long rc;
- /* The 'arg' argument of any ioctl function may only be used for
- * pointers because of the compat pointer conversion.
- * Consider this when adding new ioctls.
- */
- argp = (unsigned long) compat_ptr(data);
- if (device->discipline->ioctl_fn) {
- mutex_lock(&device->mutex);
- rval = device->discipline->ioctl_fn(device, no, argp);
- mutex_unlock(&device->mutex);
- if (rval == -EINVAL)
- rval = -ENOIOCTLCMD;
- }
+ if (no == MTIOCPOS32)
+ no = MTIOCPOS;
+ else if (no == MTIOCGET32)
+ no = MTIOCGET;
- return rval;
+ mutex_lock(&device->mutex);
+ rc = __tapechar_ioctl(device, no, compat_ptr(data), false);
+ mutex_unlock(&device->mutex);
+ return rc;
}
#endif /* CONFIG_COMPAT */
diff --git a/drivers/scsi/osst.c b/drivers/scsi/osst.c
index 7a1a1edde35d..842457b9134a 100644
--- a/drivers/scsi/osst.c
+++ b/drivers/scsi/osst.c
@@ -33,6 +33,7 @@ static const char * osst_version = "0.99.4";
#include <linux/module.h>
+#include <linux/compat.h>
#include <linux/fs.h>
#include <linux/kernel.h>
#include <linux/sched/signal.h>
@@ -4941,7 +4942,7 @@ static int os_scsi_tape_close(struct inode * inode, struct file * filp)
static long osst_ioctl(struct file * file,
unsigned int cmd_in, unsigned long arg)
{
- int i, cmd_nr, cmd_type, blk, retval = 0;
+ int i, cmd_nr, cmd_type, cmd_size, blk, retval = 0;
struct st_modedef * STm;
struct st_partstat * STps;
struct osst_request * SRpnt = NULL;
@@ -4978,6 +4979,7 @@ static long osst_ioctl(struct file * file,
cmd_type = _IOC_TYPE(cmd_in);
cmd_nr = _IOC_NR(cmd_in);
+ cmd_size = _IOC_SIZE(cmd_in);
#if DEBUG
printk(OSST_DEB_MSG "%s:D: Ioctl %d,%d in %s mode\n", name,
cmd_type, cmd_nr, STp->raw?"raw":"normal");
@@ -5179,7 +5181,8 @@ static long osst_ioctl(struct file * file,
if (cmd_type == _IOC_TYPE(MTIOCGET) && cmd_nr == _IOC_NR(MTIOCGET)) {
struct mtget mt_status;
- if (_IOC_SIZE(cmd_in) != sizeof(struct mtget)) {
+ if (cmd_size != sizeof(struct mtget) &&
+ cmd_size != sizeof(struct mtget32)) {
retval = (-EINVAL);
goto out;
}
@@ -5229,21 +5232,18 @@ static long osst_ioctl(struct file * file,
STp->drv_buffer != 0)
mt_status.mt_gstat |= GMT_IM_REP_EN(0xffffffff);
- i = copy_to_user(p, &mt_status, sizeof(struct mtget));
- if (i) {
- retval = (-EFAULT);
- goto out;
- }
-
- STp->recover_erreg = 0; /* Clear after read */
- retval = 0;
+ retval = put_user_mtget(p, &mt_status,
+ cmd_size == sizeof(struct mtget32));
+ if (!retval)
+ STp->recover_erreg = 0; /* Clear after read */
goto out;
} /* End of MTIOCGET */
if (cmd_type == _IOC_TYPE(MTIOCPOS) && cmd_nr == _IOC_NR(MTIOCPOS)) {
struct mtpos mt_pos;
- if (_IOC_SIZE(cmd_in) != sizeof(struct mtpos)) {
+ if (cmd_size != sizeof(struct mtpos) &&
+ cmd_size != sizeof(struct mtpos32)) {
retval = (-EINVAL);
goto out;
}
@@ -5256,9 +5256,7 @@ static long osst_ioctl(struct file * file,
goto out;
}
mt_pos.mt_blkno = blk;
- i = copy_to_user(p, &mt_pos, sizeof(struct mtpos));
- if (i)
- retval = -EFAULT;
+ retval = put_user_mtpos(p, &mt_pos, cmd_size == sizeof(struct mtpos32));
goto out;
}
if (SRpnt) osst_release_request(SRpnt);
@@ -5284,6 +5282,14 @@ static long osst_compat_ioctl(struct file * file, unsigned int cmd_in, unsigned
struct osst_tape *STp = file->private_data;
struct scsi_device *sdev = STp->device;
int ret = -ENOIOCTLCMD;
+
+ switch (cmd_in) {
+ case MTIOCTOP:
+ case MTIOCPOS32:
+ case MTIOCGET32:
+ return osst_ioctl(file, cmd_in, (unsigned long)compat_ptr(arg));
+ }
+
if (sdev->host->hostt->compat_ioctl) {
ret = sdev->host->hostt->compat_ioctl(sdev, cmd_in, (void __user *)arg);
diff --git a/drivers/scsi/st.c b/drivers/scsi/st.c
index 307df2fa39a3..62244ce53baa 100644
--- a/drivers/scsi/st.c
+++ b/drivers/scsi/st.c
@@ -21,6 +21,7 @@ static const char *verstr = "20160209";
#include <linux/module.h>
+#include <linux/compat.h>
#include <linux/fs.h>
#include <linux/kernel.h>
#include <linux/sched/signal.h>
@@ -3498,7 +3499,7 @@ static int partition_tape(struct scsi_tape *STp, int size)
/* The ioctl command */
static long st_ioctl(struct file *file, unsigned int cmd_in, unsigned long arg)
{
- int i, cmd_nr, cmd_type, bt;
+ int i, cmd_nr, cmd_type, cmd_size, bt;
int retval = 0;
unsigned int blk;
struct scsi_tape *STp = file->private_data;
@@ -3532,6 +3533,7 @@ static long st_ioctl(struct file *file, unsigned int cmd_in, unsigned long arg)
cmd_type = _IOC_TYPE(cmd_in);
cmd_nr = _IOC_NR(cmd_in);
+ cmd_size = _IOC_SIZE(cmd_in);
if (cmd_type == _IOC_TYPE(MTIOCTOP) && cmd_nr == _IOC_NR(MTIOCTOP)) {
struct mtop mtc;
@@ -3741,7 +3743,8 @@ static long st_ioctl(struct file *file, unsigned int cmd_in, unsigned long arg)
if (cmd_type == _IOC_TYPE(MTIOCGET) && cmd_nr == _IOC_NR(MTIOCGET)) {
struct mtget mt_status;
- if (_IOC_SIZE(cmd_in) != sizeof(struct mtget)) {
+ if (cmd_size != sizeof(struct mtget) &&
+ cmd_size != sizeof(struct mtget32)) {
retval = (-EINVAL);
goto out;
}
@@ -3796,19 +3799,16 @@ static long st_ioctl(struct file *file, unsigned int cmd_in, unsigned long arg)
if (STp->cleaning_req)
mt_status.mt_gstat |= GMT_CLN(0xffffffff);
- i = copy_to_user(p, &mt_status, sizeof(struct mtget));
- if (i) {
- retval = (-EFAULT);
- goto out;
- }
+ retval = put_user_mtget(p, &mt_status,
+ cmd_size == sizeof(struct mtget32));
STp->recover_reg = 0; /* Clear after read */
- retval = 0;
goto out;
} /* End of MTIOCGET */
if (cmd_type == _IOC_TYPE(MTIOCPOS) && cmd_nr == _IOC_NR(MTIOCPOS)) {
struct mtpos mt_pos;
- if (_IOC_SIZE(cmd_in) != sizeof(struct mtpos)) {
+ if (cmd_size != sizeof(struct mtpos) &&
+ cmd_size != sizeof(struct mtpos32)) {
retval = (-EINVAL);
goto out;
}
@@ -3817,9 +3817,8 @@ static long st_ioctl(struct file *file, unsigned int cmd_in, unsigned long arg)
goto out;
}
mt_pos.mt_blkno = blk;
- i = copy_to_user(p, &mt_pos, sizeof(struct mtpos));
- if (i)
- retval = (-EFAULT);
+ retval = put_user_mtpos(p, &mt_pos,
+ cmd_size == sizeof(struct mtpos32));
goto out;
}
mutex_unlock(&STp->lock);
@@ -3853,14 +3852,22 @@ static long st_ioctl(struct file *file, unsigned int cmd_in, unsigned long arg)
}
#ifdef CONFIG_COMPAT
-static long st_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
+static long st_compat_ioctl(struct file *file, unsigned int cmd_in, unsigned long arg)
{
struct scsi_tape *STp = file->private_data;
struct scsi_device *sdev = STp->device;
int ret = -ENOIOCTLCMD;
+
+ switch (cmd_in) {
+ case MTIOCTOP:
+ case MTIOCPOS32:
+ case MTIOCGET32:
+ return st_ioctl(file, cmd_in, (unsigned long)compat_ptr(arg));
+ }
+
if (sdev->host->hostt->compat_ioctl) {
- ret = sdev->host->hostt->compat_ioctl(sdev, cmd, (void __user *)arg);
+ ret = sdev->host->hostt->compat_ioctl(sdev, cmd_in, (void __user *)arg);
}
return ret;
diff --git a/fs/compat_ioctl.c b/fs/compat_ioctl.c
index 312b52b4e974..1b47a60da455 100644
--- a/fs/compat_ioctl.c
+++ b/fs/compat_ioctl.c
@@ -37,7 +37,6 @@
#include <linux/ppp_defs.h>
#include <linux/ppp-ioctl.h>
#include <linux/if_pppox.h>
-#include <linux/mtio.h>
#include <linux/tty.h>
#include <linux/vt_kern.h>
#include <linux/fb.h>
@@ -479,71 +478,6 @@ static int ppp_scompress(struct file *file, unsigned int cmd,
return do_ioctl(file, PPPIOCSCOMPRESS, (unsigned long) odata);
}
-#ifdef CONFIG_BLOCK
-struct mtget32 {
- compat_long_t mt_type;
- compat_long_t mt_resid;
- compat_long_t mt_dsreg;
- compat_long_t mt_gstat;
- compat_long_t mt_erreg;
- compat_daddr_t mt_fileno;
- compat_daddr_t mt_blkno;
-};
-#define MTIOCGET32 _IOR('m', 2, struct mtget32)
-
-struct mtpos32 {
- compat_long_t mt_blkno;
-};
-#define MTIOCPOS32 _IOR('m', 3, struct mtpos32)
-
-static int mt_ioctl_trans(struct file *file,
- unsigned int cmd, void __user *argp)
-{
- /* NULL initialization to make gcc shut up */
- struct mtget __user *get = NULL;
- struct mtget32 __user *umget32;
- struct mtpos __user *pos = NULL;
- struct mtpos32 __user *upos32;
- unsigned long kcmd;
- void *karg;
- int err = 0;
-
- switch(cmd) {
- case MTIOCPOS32:
- kcmd = MTIOCPOS;
- pos = compat_alloc_user_space(sizeof(*pos));
- karg = pos;
- break;
- default: /* MTIOCGET32 */
- kcmd = MTIOCGET;
- get = compat_alloc_user_space(sizeof(*get));
- karg = get;
- break;
- }
- if (karg == NULL)
- return -EFAULT;
- err = do_ioctl(file, kcmd, (unsigned long)karg);
- if (err)
- return err;
- switch (cmd) {
- case MTIOCPOS32:
- upos32 = argp;
- err = convert_in_user(&pos->mt_blkno, &upos32->mt_blkno);
- break;
- case MTIOCGET32:
- umget32 = argp;
- err = convert_in_user(&get->mt_type, &umget32->mt_type);
- err |= convert_in_user(&get->mt_resid, &umget32->mt_resid);
- err |= convert_in_user(&get->mt_dsreg, &umget32->mt_dsreg);
- err |= convert_in_user(&get->mt_gstat, &umget32->mt_gstat);
- err |= convert_in_user(&get->mt_erreg, &umget32->mt_erreg);
- err |= convert_in_user(&get->mt_fileno, &umget32->mt_fileno);
- err |= convert_in_user(&get->mt_blkno, &umget32->mt_blkno);
- break;
- }
- return err ? -EFAULT: 0;
-}
-
#endif /* CONFIG_BLOCK */
/* Bluetooth ioctls */
@@ -792,8 +726,6 @@ IGNORE_IOCTL(VT_GETMODE)
*/
COMPATIBLE_IOCTL(_IOR('p', 20, int[7])) /* RTCGET */
COMPATIBLE_IOCTL(_IOW('p', 21, int[7])) /* RTCSET */
-/* Little m */
-COMPATIBLE_IOCTL(MTIOCTOP)
/* Socket level stuff */
COMPATIBLE_IOCTL(FIOQSIZE)
#ifdef CONFIG_BLOCK
@@ -1252,9 +1184,6 @@ static long do_ioctl_trans(unsigned int cmd,
return sg_ioctl_trans(file, cmd, argp);
case SG_GET_REQUEST_TABLE:
return sg_grt_trans(file, cmd, argp);
- case MTIOCGET32:
- case MTIOCPOS32:
- return mt_ioctl_trans(file, cmd, argp);
#endif
/* Serial */
case TIOCGSERIAL:
diff --git a/include/linux/mtio.h b/include/linux/mtio.h
new file mode 100644
index 000000000000..02640756a40d
--- /dev/null
+++ b/include/linux/mtio.h
@@ -0,0 +1,58 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _LINUX_MTIO_COMPAT_H
+#define _LINUX_MTIO_COMPAT_H
+
+#include <uapi/linux/mtio.h>
+#include <linux/uaccess.h>
+
+/*
+ * helper functions for implementing compat ioctls on the four tape
+ * drivers: we define the 32-bit layout of each incompatible strucucture,
+ * plus a wrapper function to copy it to user space in either format.
+ */
+
+struct mtget32 {
+ s32 mt_type;
+ s32 mt_resid;
+ s32 mt_dsreg;
+ s32 mt_gstat;
+ s32 mt_erreg;
+ s32 mt_fileno;
+ s32 mt_blkno;
+};
+#define MTIOCGET32 _IOR('m', 2, struct mtget32)
+
+struct mtpos32 {
+ s32 mt_blkno;
+};
+#define MTIOCPOS32 _IOR('m', 3, struct mtpos32)
+
+static inline int put_user_mtget(void __user *u, struct mtget *k, bool compat)
+{
+ struct mtget32 k32 = {
+ .mt_type = k->mt_type,
+ .mt_resid = k->mt_resid,
+ .mt_dsreg = k->mt_dsreg,
+ .mt_gstat = k->mt_gstat,
+ .mt_fileno = k->mt_fileno,
+ .mt_blkno = k->mt_blkno,
+ };
+ int ret;
+
+ if (IS_ENABLED(CONFIG_COMPAT) && compat)
+ ret = copy_to_user(u, &k32, sizeof(k32));
+ else
+ ret = copy_to_user(u, k, sizeof(*k));
+
+ return ret ? -EFAULT : 0;
+}
+
+static inline int put_user_mtpos(void __user *u, struct mtpos *k, bool compat)
+{
+ if (IS_ENABLED(CONFIG_COMPAT) && compat)
+ return put_user(k->mt_blkno, (u32 __user *)u);
+ else
+ return put_user(k->mt_blkno, (long __user *)u);
+}
+
+#endif
--
2.18.0
^ permalink raw reply related [flat|nested] 141+ messages in thread
* [PATCH v2 08/17] compat_ioctl: remove keyboard ioctl translation
2018-09-12 15:08 ` Arnd Bergmann
` (5 preceding siblings ...)
(?)
@ 2018-09-12 15:08 ` Arnd Bergmann
-1 siblings, 0 replies; 141+ messages in thread
From: Arnd Bergmann @ 2018-09-12 15:08 UTC (permalink / raw)
To: viro; +Cc: linux-fsdevel, Arnd Bergmann, linux-kernel
The KD* family of ioctls is implemented in two drivers:
drivers/tty/vt and drivers/s390/char/tty3270.c. Both of them
have compat handlers for all their ioctl commands, so translation
in fs/compat_ioctl.c is never used.
Commit fb07a5f857ac ("compat_ioctl: remove all VT ioctl handling")
removed the compat handling for all the other VT ioctls back in
2009, but it seems I missed the keyboard ones back then.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
fs/compat_ioctl.c | 26 --------------------------
1 file changed, 26 deletions(-)
diff --git a/fs/compat_ioctl.c b/fs/compat_ioctl.c
index 1b47a60da455..e245deb684b5 100644
--- a/fs/compat_ioctl.c
+++ b/fs/compat_ioctl.c
@@ -687,23 +687,6 @@ COMPATIBLE_IOCTL(FIGETBSZ)
COMPATIBLE_IOCTL(FIFREEZE)
COMPATIBLE_IOCTL(FITHAW)
COMPATIBLE_IOCTL(FITRIM)
-COMPATIBLE_IOCTL(KDGETKEYCODE)
-COMPATIBLE_IOCTL(KDSETKEYCODE)
-COMPATIBLE_IOCTL(KDGKBTYPE)
-COMPATIBLE_IOCTL(KDGETMODE)
-COMPATIBLE_IOCTL(KDGKBMODE)
-COMPATIBLE_IOCTL(KDGKBMETA)
-COMPATIBLE_IOCTL(KDGKBENT)
-COMPATIBLE_IOCTL(KDSKBENT)
-COMPATIBLE_IOCTL(KDGKBSENT)
-COMPATIBLE_IOCTL(KDSKBSENT)
-COMPATIBLE_IOCTL(KDGKBDIACR)
-COMPATIBLE_IOCTL(KDSKBDIACR)
-COMPATIBLE_IOCTL(KDGKBDIACRUC)
-COMPATIBLE_IOCTL(KDSKBDIACRUC)
-COMPATIBLE_IOCTL(KDKBDREP)
-COMPATIBLE_IOCTL(KDGKBLED)
-COMPATIBLE_IOCTL(KDGETLED)
#ifdef CONFIG_BLOCK
/* Big S */
COMPATIBLE_IOCTL(SCSI_IOCTL_GET_IDLUN)
@@ -1210,15 +1193,6 @@ static long do_ioctl_trans(unsigned int cmd,
case HOT_ADD_DISK:
case SET_DISK_FAULTY:
case SET_BITMAP_FILE:
- /* Big K */
- case KDSIGACCEPT:
- case KIOCSOUND:
- case KDMKTONE:
- case KDSETMODE:
- case KDSKBMODE:
- case KDSKBMETA:
- case KDSKBLED:
- case KDSETLED:
return vfs_ioctl(file, cmd, arg);
}
--
2.18.0
^ permalink raw reply related [flat|nested] 141+ messages in thread
* [PATCH v2 09/17] compat_ioctl: remove HIDIO translation
2018-09-12 15:08 ` Arnd Bergmann
` (6 preceding siblings ...)
(?)
@ 2018-09-12 15:08 ` Arnd Bergmann
-1 siblings, 0 replies; 141+ messages in thread
From: Arnd Bergmann @ 2018-09-12 15:08 UTC (permalink / raw)
To: viro; +Cc: linux-fsdevel, Arnd Bergmann, linux-kernel
The two drivers implementing these both gained proper compat_ioctl()
handlers a long time ago with commits bb6c8d8fa9b5 ("HID: hiddev:
Add 32bit ioctl compatibilty") and ae5e49c79c05 ("HID: hidraw: add
compatibility ioctl() for 32-bit applications."), so the lists in
fs/compat_ioctl.c are no longer used.
It appears that the lists were also incomplete, so the translation
didn't actually work correctly when it was still in use.
Remove them as cleanup.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
fs/compat_ioctl.c | 18 ------------------
1 file changed, 18 deletions(-)
diff --git a/fs/compat_ioctl.c b/fs/compat_ioctl.c
index e245deb684b5..001c9fd89d30 100644
--- a/fs/compat_ioctl.c
+++ b/fs/compat_ioctl.c
@@ -1023,23 +1023,6 @@ COMPATIBLE_IOCTL(PCIIOC_CONTROLLER)
COMPATIBLE_IOCTL(PCIIOC_MMAP_IS_IO)
COMPATIBLE_IOCTL(PCIIOC_MMAP_IS_MEM)
COMPATIBLE_IOCTL(PCIIOC_WRITE_COMBINE)
-/* hiddev */
-COMPATIBLE_IOCTL(HIDIOCGVERSION)
-COMPATIBLE_IOCTL(HIDIOCAPPLICATION)
-COMPATIBLE_IOCTL(HIDIOCGDEVINFO)
-COMPATIBLE_IOCTL(HIDIOCGSTRING)
-COMPATIBLE_IOCTL(HIDIOCINITREPORT)
-COMPATIBLE_IOCTL(HIDIOCGREPORT)
-COMPATIBLE_IOCTL(HIDIOCSREPORT)
-COMPATIBLE_IOCTL(HIDIOCGREPORTINFO)
-COMPATIBLE_IOCTL(HIDIOCGFIELDINFO)
-COMPATIBLE_IOCTL(HIDIOCGUSAGE)
-COMPATIBLE_IOCTL(HIDIOCSUSAGE)
-COMPATIBLE_IOCTL(HIDIOCGUCODE)
-COMPATIBLE_IOCTL(HIDIOCGFLAG)
-COMPATIBLE_IOCTL(HIDIOCSFLAG)
-COMPATIBLE_IOCTL(HIDIOCGCOLLECTIONINDEX)
-COMPATIBLE_IOCTL(HIDIOCGCOLLECTIONINFO)
/* dvb */
COMPATIBLE_IOCTL(AUDIO_STOP)
COMPATIBLE_IOCTL(AUDIO_PLAY)
@@ -1094,7 +1077,6 @@ COMPATIBLE_IOCTL(CEC_S_MODE)
COMPATIBLE_IOCTL(CEC_TRANSMIT)
COMPATIBLE_IOCTL(CEC_RECEIVE)
COMPATIBLE_IOCTL(CEC_DQEVENT)
-
/* joystick */
COMPATIBLE_IOCTL(JSIOCGVERSION)
COMPATIBLE_IOCTL(JSIOCGAXES)
--
2.18.0
^ permalink raw reply related [flat|nested] 141+ messages in thread
* Re: [PATCH v2 05/17] compat_ioctl: move more drivers to generic_compat_ioctl_ptrarg
2018-09-12 15:08 ` Arnd Bergmann
(?)
(?)
@ 2018-09-12 15:56 ` Jason Gunthorpe
-1 siblings, 0 replies; 141+ messages in thread
From: Jason Gunthorpe @ 2018-09-12 15:56 UTC (permalink / raw)
To: Arnd Bergmann
Cc: viro, linux-fsdevel, Greg Kroah-Hartman, David S. Miller, devel,
linux-kernel, qat-linux, linux-crypto, linux-media, dri-devel,
linaro-mm-sig, amd-gfx, linux-input, linux-iio, linux-rdma,
linux-nvdimm, linux-nvme, linux-pci, platform-driver-x86,
linux-remoteproc, sparclinux, linux-scsi, linux-usb, linux-fbdev,
linuxppc-dev, linux-btrfs, ceph-devel, linux-wireless, netdev
On Wed, Sep 12, 2018 at 05:08:52PM +0200, Arnd Bergmann wrote:
> The .ioctl and .compat_ioctl file operations have the same prototype so
> they can both point to the same function, which works great almost all
> the time when all the commands are compatible.
>
> One exception is the s390 architecture, where a compat pointer is only
> 31 bit wide, and converting it into a 64-bit pointer requires calling
> compat_ptr(). Most drivers here will ever run in s390, but since we now
> have a generic helper for it, it's easy enough to use it consistently.
>
> I double-checked all these drivers to ensure that all ioctl arguments
> are used as pointers or are ignored, but are not interpreted as integer
> values.
>
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
> drivers/android/binder.c | 2 +-
> drivers/crypto/qat/qat_common/adf_ctl_drv.c | 2 +-
> drivers/dma-buf/dma-buf.c | 4 +---
> drivers/dma-buf/sw_sync.c | 2 +-
> drivers/dma-buf/sync_file.c | 2 +-
> drivers/gpu/drm/amd/amdkfd/kfd_chardev.c | 2 +-
> drivers/hid/hidraw.c | 4 +---
> drivers/iio/industrialio-core.c | 2 +-
> drivers/infiniband/core/uverbs_main.c | 4 ++--
> drivers/media/rc/lirc_dev.c | 4 +---
> drivers/mfd/cros_ec_dev.c | 4 +---
> drivers/misc/vmw_vmci/vmci_host.c | 2 +-
> drivers/nvdimm/bus.c | 4 ++--
> drivers/nvme/host/core.c | 2 +-
> drivers/pci/switch/switchtec.c | 2 +-
> drivers/platform/x86/wmi.c | 2 +-
> drivers/rpmsg/rpmsg_char.c | 4 ++--
> drivers/sbus/char/display7seg.c | 2 +-
> drivers/sbus/char/envctrl.c | 4 +---
> drivers/scsi/3w-xxxx.c | 4 +---
> drivers/scsi/cxlflash/main.c | 2 +-
> drivers/scsi/esas2r/esas2r_main.c | 2 +-
> drivers/scsi/pmcraid.c | 4 +---
> drivers/staging/android/ion/ion.c | 4 +---
> drivers/staging/vme/devices/vme_user.c | 2 +-
> drivers/tee/tee_core.c | 2 +-
> drivers/usb/class/cdc-wdm.c | 2 +-
> drivers/usb/class/usbtmc.c | 4 +---
> drivers/video/fbdev/ps3fb.c | 2 +-
> drivers/virt/fsl_hypervisor.c | 2 +-
> fs/btrfs/super.c | 2 +-
> fs/ceph/dir.c | 2 +-
> fs/ceph/file.c | 2 +-
> fs/fuse/dev.c | 2 +-
> fs/notify/fanotify/fanotify_user.c | 2 +-
> fs/userfaultfd.c | 2 +-
> net/rfkill/core.c | 2 +-
> 37 files changed, 40 insertions(+), 58 deletions(-)
> diff --git a/drivers/infiniband/core/uverbs_main.c b/drivers/infiniband/core/uverbs_main.c
> index 823beca448e1..f4755c1c9cfa 100644
> +++ b/drivers/infiniband/core/uverbs_main.c
> @@ -930,7 +930,7 @@ static const struct file_operations uverbs_fops = {
> .release = ib_uverbs_close,
> .llseek = no_llseek,
> .unlocked_ioctl = ib_uverbs_ioctl,
> - .compat_ioctl = ib_uverbs_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static const struct file_operations uverbs_mmap_fops = {
> @@ -941,7 +941,7 @@ static const struct file_operations uverbs_mmap_fops = {
> .release = ib_uverbs_close,
> .llseek = no_llseek,
> .unlocked_ioctl = ib_uverbs_ioctl,
> - .compat_ioctl = ib_uverbs_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static struct ib_client uverbs_client = {
For uverbs:
Acked-by: Jason Gunthorpe <jgg@mellanox.com>
It is very strange, this patch did not appear in the RDMA patchworks,
I almost missed it :|
Jason
^ permalink raw reply [flat|nested] 141+ messages in thread
* Re: [PATCH v2 05/17] compat_ioctl: move more drivers to generic_compat_ioctl_ptrarg
@ 2018-09-12 15:56 ` Jason Gunthorpe
0 siblings, 0 replies; 141+ messages in thread
From: Jason Gunthorpe @ 2018-09-12 15:56 UTC (permalink / raw)
To: Arnd Bergmann
Cc: viro, linux-fsdevel, Greg Kroah-Hartman, David S. Miller, devel,
linux-kernel, qat-linux, linux-crypto, linux-media, dri-devel,
linaro-mm-sig, amd-gfx, linux-input, linux-iio, linux-rdma,
linux-nvdimm, linux-nvme, linux-pci, platform-driver-x86,
linux-remoteproc, sparclinux, linux-scsi, linux-usb, linux-fbdev,
linuxppc-dev, linux-btrfs
On Wed, Sep 12, 2018 at 05:08:52PM +0200, Arnd Bergmann wrote:
> The .ioctl and .compat_ioctl file operations have the same prototype so
> they can both point to the same function, which works great almost all
> the time when all the commands are compatible.
>
> One exception is the s390 architecture, where a compat pointer is only
> 31 bit wide, and converting it into a 64-bit pointer requires calling
> compat_ptr(). Most drivers here will ever run in s390, but since we now
> have a generic helper for it, it's easy enough to use it consistently.
>
> I double-checked all these drivers to ensure that all ioctl arguments
> are used as pointers or are ignored, but are not interpreted as integer
> values.
>
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
> drivers/android/binder.c | 2 +-
> drivers/crypto/qat/qat_common/adf_ctl_drv.c | 2 +-
> drivers/dma-buf/dma-buf.c | 4 +---
> drivers/dma-buf/sw_sync.c | 2 +-
> drivers/dma-buf/sync_file.c | 2 +-
> drivers/gpu/drm/amd/amdkfd/kfd_chardev.c | 2 +-
> drivers/hid/hidraw.c | 4 +---
> drivers/iio/industrialio-core.c | 2 +-
> drivers/infiniband/core/uverbs_main.c | 4 ++--
> drivers/media/rc/lirc_dev.c | 4 +---
> drivers/mfd/cros_ec_dev.c | 4 +---
> drivers/misc/vmw_vmci/vmci_host.c | 2 +-
> drivers/nvdimm/bus.c | 4 ++--
> drivers/nvme/host/core.c | 2 +-
> drivers/pci/switch/switchtec.c | 2 +-
> drivers/platform/x86/wmi.c | 2 +-
> drivers/rpmsg/rpmsg_char.c | 4 ++--
> drivers/sbus/char/display7seg.c | 2 +-
> drivers/sbus/char/envctrl.c | 4 +---
> drivers/scsi/3w-xxxx.c | 4 +---
> drivers/scsi/cxlflash/main.c | 2 +-
> drivers/scsi/esas2r/esas2r_main.c | 2 +-
> drivers/scsi/pmcraid.c | 4 +---
> drivers/staging/android/ion/ion.c | 4 +---
> drivers/staging/vme/devices/vme_user.c | 2 +-
> drivers/tee/tee_core.c | 2 +-
> drivers/usb/class/cdc-wdm.c | 2 +-
> drivers/usb/class/usbtmc.c | 4 +---
> drivers/video/fbdev/ps3fb.c | 2 +-
> drivers/virt/fsl_hypervisor.c | 2 +-
> fs/btrfs/super.c | 2 +-
> fs/ceph/dir.c | 2 +-
> fs/ceph/file.c | 2 +-
> fs/fuse/dev.c | 2 +-
> fs/notify/fanotify/fanotify_user.c | 2 +-
> fs/userfaultfd.c | 2 +-
> net/rfkill/core.c | 2 +-
> 37 files changed, 40 insertions(+), 58 deletions(-)
> diff --git a/drivers/infiniband/core/uverbs_main.c b/drivers/infiniband/core/uverbs_main.c
> index 823beca448e1..f4755c1c9cfa 100644
> +++ b/drivers/infiniband/core/uverbs_main.c
> @@ -930,7 +930,7 @@ static const struct file_operations uverbs_fops = {
> .release = ib_uverbs_close,
> .llseek = no_llseek,
> .unlocked_ioctl = ib_uverbs_ioctl,
> - .compat_ioctl = ib_uverbs_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static const struct file_operations uverbs_mmap_fops = {
> @@ -941,7 +941,7 @@ static const struct file_operations uverbs_mmap_fops = {
> .release = ib_uverbs_close,
> .llseek = no_llseek,
> .unlocked_ioctl = ib_uverbs_ioctl,
> - .compat_ioctl = ib_uverbs_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static struct ib_client uverbs_client = {
For uverbs:
Acked-by: Jason Gunthorpe <jgg@mellanox.com>
It is very strange, this patch did not appear in the RDMA patchworks,
I almost missed it :|
Jason
^ permalink raw reply [flat|nested] 141+ messages in thread
* [v2,05/17] compat_ioctl: move more drivers to generic_compat_ioctl_ptrarg
@ 2018-09-12 15:56 ` Jason Gunthorpe
0 siblings, 0 replies; 141+ messages in thread
From: Jason Gunthorpe @ 2018-09-12 15:56 UTC (permalink / raw)
To: Arnd Bergmann
Cc: viro, linux-fsdevel, Greg Kroah-Hartman, David S. Miller, devel,
linux-kernel, qat-linux, linux-crypto, linux-media, dri-devel,
linaro-mm-sig, amd-gfx, linux-input, linux-iio, linux-rdma,
linux-nvdimm, linux-nvme, linux-pci, platform-driver-x86,
linux-remoteproc, sparclinux, linux-scsi, linux-usb, linux-fbdev,
linuxppc-dev, linux-btrfs, ceph-devel, linux-wireless, netdev
On Wed, Sep 12, 2018 at 05:08:52PM +0200, Arnd Bergmann wrote:
> The .ioctl and .compat_ioctl file operations have the same prototype so
> they can both point to the same function, which works great almost all
> the time when all the commands are compatible.
>
> One exception is the s390 architecture, where a compat pointer is only
> 31 bit wide, and converting it into a 64-bit pointer requires calling
> compat_ptr(). Most drivers here will ever run in s390, but since we now
> have a generic helper for it, it's easy enough to use it consistently.
>
> I double-checked all these drivers to ensure that all ioctl arguments
> are used as pointers or are ignored, but are not interpreted as integer
> values.
>
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
> drivers/android/binder.c | 2 +-
> drivers/crypto/qat/qat_common/adf_ctl_drv.c | 2 +-
> drivers/dma-buf/dma-buf.c | 4 +---
> drivers/dma-buf/sw_sync.c | 2 +-
> drivers/dma-buf/sync_file.c | 2 +-
> drivers/gpu/drm/amd/amdkfd/kfd_chardev.c | 2 +-
> drivers/hid/hidraw.c | 4 +---
> drivers/iio/industrialio-core.c | 2 +-
> drivers/infiniband/core/uverbs_main.c | 4 ++--
> drivers/media/rc/lirc_dev.c | 4 +---
> drivers/mfd/cros_ec_dev.c | 4 +---
> drivers/misc/vmw_vmci/vmci_host.c | 2 +-
> drivers/nvdimm/bus.c | 4 ++--
> drivers/nvme/host/core.c | 2 +-
> drivers/pci/switch/switchtec.c | 2 +-
> drivers/platform/x86/wmi.c | 2 +-
> drivers/rpmsg/rpmsg_char.c | 4 ++--
> drivers/sbus/char/display7seg.c | 2 +-
> drivers/sbus/char/envctrl.c | 4 +---
> drivers/scsi/3w-xxxx.c | 4 +---
> drivers/scsi/cxlflash/main.c | 2 +-
> drivers/scsi/esas2r/esas2r_main.c | 2 +-
> drivers/scsi/pmcraid.c | 4 +---
> drivers/staging/android/ion/ion.c | 4 +---
> drivers/staging/vme/devices/vme_user.c | 2 +-
> drivers/tee/tee_core.c | 2 +-
> drivers/usb/class/cdc-wdm.c | 2 +-
> drivers/usb/class/usbtmc.c | 4 +---
> drivers/video/fbdev/ps3fb.c | 2 +-
> drivers/virt/fsl_hypervisor.c | 2 +-
> fs/btrfs/super.c | 2 +-
> fs/ceph/dir.c | 2 +-
> fs/ceph/file.c | 2 +-
> fs/fuse/dev.c | 2 +-
> fs/notify/fanotify/fanotify_user.c | 2 +-
> fs/userfaultfd.c | 2 +-
> net/rfkill/core.c | 2 +-
> 37 files changed, 40 insertions(+), 58 deletions(-)
> diff --git a/drivers/infiniband/core/uverbs_main.c b/drivers/infiniband/core/uverbs_main.c
> index 823beca448e1..f4755c1c9cfa 100644
> +++ b/drivers/infiniband/core/uverbs_main.c
> @@ -930,7 +930,7 @@ static const struct file_operations uverbs_fops = {
> .release = ib_uverbs_close,
> .llseek = no_llseek,
> .unlocked_ioctl = ib_uverbs_ioctl,
> - .compat_ioctl = ib_uverbs_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static const struct file_operations uverbs_mmap_fops = {
> @@ -941,7 +941,7 @@ static const struct file_operations uverbs_mmap_fops = {
> .release = ib_uverbs_close,
> .llseek = no_llseek,
> .unlocked_ioctl = ib_uverbs_ioctl,
> - .compat_ioctl = ib_uverbs_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static struct ib_client uverbs_client = {
For uverbs:
Acked-by: Jason Gunthorpe <jgg@mellanox.com>
It is very strange, this patch did not appear in the RDMA patchworks,
I almost missed it :|
Jason
^ permalink raw reply [flat|nested] 141+ messages in thread
* Re: [PATCH v2 05/17] compat_ioctl: move more drivers to generic_compat_ioctl_ptrarg
@ 2018-09-12 15:56 ` Jason Gunthorpe
0 siblings, 0 replies; 141+ messages in thread
From: Jason Gunthorpe @ 2018-09-12 15:56 UTC (permalink / raw)
To: Arnd Bergmann
Cc: viro, linux-fsdevel, Greg Kroah-Hartman, David S. Miller, devel,
linux-kernel, qat-linux, linux-crypto, linux-media, dri-devel,
linaro-mm-sig, amd-gfx, linux-input, linux-iio, linux-rdma,
linux-nvdimm, linux-nvme, linux-pci, platform-driver-x86,
linux-remoteproc, sparclinux, linux-scsi, linux-usb, linux-fbdev,
linuxppc-dev, linux-btrfs
On Wed, Sep 12, 2018 at 05:08:52PM +0200, Arnd Bergmann wrote:
> The .ioctl and .compat_ioctl file operations have the same prototype so
> they can both point to the same function, which works great almost all
> the time when all the commands are compatible.
>
> One exception is the s390 architecture, where a compat pointer is only
> 31 bit wide, and converting it into a 64-bit pointer requires calling
> compat_ptr(). Most drivers here will ever run in s390, but since we now
> have a generic helper for it, it's easy enough to use it consistently.
>
> I double-checked all these drivers to ensure that all ioctl arguments
> are used as pointers or are ignored, but are not interpreted as integer
> values.
>
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
> drivers/android/binder.c | 2 +-
> drivers/crypto/qat/qat_common/adf_ctl_drv.c | 2 +-
> drivers/dma-buf/dma-buf.c | 4 +---
> drivers/dma-buf/sw_sync.c | 2 +-
> drivers/dma-buf/sync_file.c | 2 +-
> drivers/gpu/drm/amd/amdkfd/kfd_chardev.c | 2 +-
> drivers/hid/hidraw.c | 4 +---
> drivers/iio/industrialio-core.c | 2 +-
> drivers/infiniband/core/uverbs_main.c | 4 ++--
> drivers/media/rc/lirc_dev.c | 4 +---
> drivers/mfd/cros_ec_dev.c | 4 +---
> drivers/misc/vmw_vmci/vmci_host.c | 2 +-
> drivers/nvdimm/bus.c | 4 ++--
> drivers/nvme/host/core.c | 2 +-
> drivers/pci/switch/switchtec.c | 2 +-
> drivers/platform/x86/wmi.c | 2 +-
> drivers/rpmsg/rpmsg_char.c | 4 ++--
> drivers/sbus/char/display7seg.c | 2 +-
> drivers/sbus/char/envctrl.c | 4 +---
> drivers/scsi/3w-xxxx.c | 4 +---
> drivers/scsi/cxlflash/main.c | 2 +-
> drivers/scsi/esas2r/esas2r_main.c | 2 +-
> drivers/scsi/pmcraid.c | 4 +---
> drivers/staging/android/ion/ion.c | 4 +---
> drivers/staging/vme/devices/vme_user.c | 2 +-
> drivers/tee/tee_core.c | 2 +-
> drivers/usb/class/cdc-wdm.c | 2 +-
> drivers/usb/class/usbtmc.c | 4 +---
> drivers/video/fbdev/ps3fb.c | 2 +-
> drivers/virt/fsl_hypervisor.c | 2 +-
> fs/btrfs/super.c | 2 +-
> fs/ceph/dir.c | 2 +-
> fs/ceph/file.c | 2 +-
> fs/fuse/dev.c | 2 +-
> fs/notify/fanotify/fanotify_user.c | 2 +-
> fs/userfaultfd.c | 2 +-
> net/rfkill/core.c | 2 +-
> 37 files changed, 40 insertions(+), 58 deletions(-)
> diff --git a/drivers/infiniband/core/uverbs_main.c b/drivers/infiniband/core/uverbs_main.c
> index 823beca448e1..f4755c1c9cfa 100644
> +++ b/drivers/infiniband/core/uverbs_main.c
> @@ -930,7 +930,7 @@ static const struct file_operations uverbs_fops = {
> .release = ib_uverbs_close,
> .llseek = no_llseek,
> .unlocked_ioctl = ib_uverbs_ioctl,
> - .compat_ioctl = ib_uverbs_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static const struct file_operations uverbs_mmap_fops = {
> @@ -941,7 +941,7 @@ static const struct file_operations uverbs_mmap_fops = {
> .release = ib_uverbs_close,
> .llseek = no_llseek,
> .unlocked_ioctl = ib_uverbs_ioctl,
> - .compat_ioctl = ib_uverbs_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static struct ib_client uverbs_client = {
For uverbs:
Acked-by: Jason Gunthorpe <jgg@mellanox.com>
It is very strange, this patch did not appear in the RDMA patchworks,
I almost missed it :|
Jason
^ permalink raw reply [flat|nested] 141+ messages in thread
* Re: [PATCH v2 05/17] compat_ioctl: move more drivers to generic_compat_ioctl_ptrarg
2018-09-12 15:08 ` Arnd Bergmann
` (4 preceding siblings ...)
(?)
@ 2018-09-12 15:58 ` Daniel Vetter
-1 siblings, 0 replies; 141+ messages in thread
From: Daniel Vetter @ 2018-09-12 15:58 UTC (permalink / raw)
To: Arnd Bergmann
Cc: Linux Fbdev development list, linux-iio, Linux PCI,
linux-remoteproc, dri-devel, platform-driver-x86, sparclinux,
driverdevel, linux-scsi, linux-nvdimm, linux-rdma, qat-linux,
amd-gfx list, linux-input,
open list:DMA BUFFER SHARING FRAMEWORK,
moderated list:DMA BUFFER SHARING FRAMEWORK, linux-nvme,
ceph-devel, Greg Kroah-Hartman, USB list, linux-wireless,
Linux Kernel Mailing List, linux-crypto, netdev, linux-fsdevel,
linuxppc-dev, David S. Miller, linux-btrfs, Al Viro
On Wed, Sep 12, 2018 at 5:08 PM, Arnd Bergmann <arnd@arndb.de> wrote:
> The .ioctl and .compat_ioctl file operations have the same prototype so
> they can both point to the same function, which works great almost all
> the time when all the commands are compatible.
>
> One exception is the s390 architecture, where a compat pointer is only
> 31 bit wide, and converting it into a 64-bit pointer requires calling
> compat_ptr(). Most drivers here will ever run in s390, but since we now
> have a generic helper for it, it's easy enough to use it consistently.
>
> I double-checked all these drivers to ensure that all ioctl arguments
> are used as pointers or are ignored, but are not interpreted as integer
> values.
>
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
At least for the drm and dma-buf bits.
-Daniel
> ---
> drivers/android/binder.c | 2 +-
> drivers/crypto/qat/qat_common/adf_ctl_drv.c | 2 +-
> drivers/dma-buf/dma-buf.c | 4 +---
> drivers/dma-buf/sw_sync.c | 2 +-
> drivers/dma-buf/sync_file.c | 2 +-
> drivers/gpu/drm/amd/amdkfd/kfd_chardev.c | 2 +-
> drivers/hid/hidraw.c | 4 +---
> drivers/iio/industrialio-core.c | 2 +-
> drivers/infiniband/core/uverbs_main.c | 4 ++--
> drivers/media/rc/lirc_dev.c | 4 +---
> drivers/mfd/cros_ec_dev.c | 4 +---
> drivers/misc/vmw_vmci/vmci_host.c | 2 +-
> drivers/nvdimm/bus.c | 4 ++--
> drivers/nvme/host/core.c | 2 +-
> drivers/pci/switch/switchtec.c | 2 +-
> drivers/platform/x86/wmi.c | 2 +-
> drivers/rpmsg/rpmsg_char.c | 4 ++--
> drivers/sbus/char/display7seg.c | 2 +-
> drivers/sbus/char/envctrl.c | 4 +---
> drivers/scsi/3w-xxxx.c | 4 +---
> drivers/scsi/cxlflash/main.c | 2 +-
> drivers/scsi/esas2r/esas2r_main.c | 2 +-
> drivers/scsi/pmcraid.c | 4 +---
> drivers/staging/android/ion/ion.c | 4 +---
> drivers/staging/vme/devices/vme_user.c | 2 +-
> drivers/tee/tee_core.c | 2 +-
> drivers/usb/class/cdc-wdm.c | 2 +-
> drivers/usb/class/usbtmc.c | 4 +---
> drivers/video/fbdev/ps3fb.c | 2 +-
> drivers/virt/fsl_hypervisor.c | 2 +-
> fs/btrfs/super.c | 2 +-
> fs/ceph/dir.c | 2 +-
> fs/ceph/file.c | 2 +-
> fs/fuse/dev.c | 2 +-
> fs/notify/fanotify/fanotify_user.c | 2 +-
> fs/userfaultfd.c | 2 +-
> net/rfkill/core.c | 2 +-
> 37 files changed, 40 insertions(+), 58 deletions(-)
>
> diff --git a/drivers/android/binder.c b/drivers/android/binder.c
> index d58763b6b009..d2464f5759f8 100644
> --- a/drivers/android/binder.c
> +++ b/drivers/android/binder.c
> @@ -5576,7 +5576,7 @@ static const struct file_operations binder_fops = {
> .owner = THIS_MODULE,
> .poll = binder_poll,
> .unlocked_ioctl = binder_ioctl,
> - .compat_ioctl = binder_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .mmap = binder_mmap,
> .open = binder_open,
> .flush = binder_flush,
> diff --git a/drivers/crypto/qat/qat_common/adf_ctl_drv.c b/drivers/crypto/qat/qat_common/adf_ctl_drv.c
> index abc7a7f64d64..8ff77a70addc 100644
> --- a/drivers/crypto/qat/qat_common/adf_ctl_drv.c
> +++ b/drivers/crypto/qat/qat_common/adf_ctl_drv.c
> @@ -68,7 +68,7 @@ static long adf_ctl_ioctl(struct file *fp, unsigned int cmd, unsigned long arg);
> static const struct file_operations adf_ctl_ops = {
> .owner = THIS_MODULE,
> .unlocked_ioctl = adf_ctl_ioctl,
> - .compat_ioctl = adf_ctl_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> struct adf_ctl_drv_info {
> diff --git a/drivers/dma-buf/dma-buf.c b/drivers/dma-buf/dma-buf.c
> index 13884474d158..a6d7dc4cf7e9 100644
> --- a/drivers/dma-buf/dma-buf.c
> +++ b/drivers/dma-buf/dma-buf.c
> @@ -325,9 +325,7 @@ static const struct file_operations dma_buf_fops = {
> .llseek = dma_buf_llseek,
> .poll = dma_buf_poll,
> .unlocked_ioctl = dma_buf_ioctl,
> -#ifdef CONFIG_COMPAT
> - .compat_ioctl = dma_buf_ioctl,
> -#endif
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> /*
> diff --git a/drivers/dma-buf/sw_sync.c b/drivers/dma-buf/sw_sync.c
> index 53c1d6d36a64..bc810506d487 100644
> --- a/drivers/dma-buf/sw_sync.c
> +++ b/drivers/dma-buf/sw_sync.c
> @@ -419,5 +419,5 @@ const struct file_operations sw_sync_debugfs_fops = {
> .open = sw_sync_debugfs_open,
> .release = sw_sync_debugfs_release,
> .unlocked_ioctl = sw_sync_ioctl,
> - .compat_ioctl = sw_sync_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
> diff --git a/drivers/dma-buf/sync_file.c b/drivers/dma-buf/sync_file.c
> index 35dd06479867..1c64ed60c658 100644
> --- a/drivers/dma-buf/sync_file.c
> +++ b/drivers/dma-buf/sync_file.c
> @@ -488,5 +488,5 @@ static const struct file_operations sync_file_fops = {
> .release = sync_file_release,
> .poll = sync_file_poll,
> .unlocked_ioctl = sync_file_ioctl,
> - .compat_ioctl = sync_file_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
> diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
> index 297b36c26a05..1d7b1e3c3ebe 100644
> --- a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
> +++ b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
> @@ -47,7 +47,7 @@ static const char kfd_dev_name[] = "kfd";
> static const struct file_operations kfd_fops = {
> .owner = THIS_MODULE,
> .unlocked_ioctl = kfd_ioctl,
> - .compat_ioctl = kfd_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .open = kfd_open,
> .mmap = kfd_mmap,
> };
> diff --git a/drivers/hid/hidraw.c b/drivers/hid/hidraw.c
> index 4a44e48e08b2..e44b64812850 100644
> --- a/drivers/hid/hidraw.c
> +++ b/drivers/hid/hidraw.c
> @@ -476,9 +476,7 @@ static const struct file_operations hidraw_ops = {
> .release = hidraw_release,
> .unlocked_ioctl = hidraw_ioctl,
> .fasync = hidraw_fasync,
> -#ifdef CONFIG_COMPAT
> - .compat_ioctl = hidraw_ioctl,
> -#endif
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .llseek = noop_llseek,
> };
>
> diff --git a/drivers/iio/industrialio-core.c b/drivers/iio/industrialio-core.c
> index a062cfddc5af..22844b94b0e9 100644
> --- a/drivers/iio/industrialio-core.c
> +++ b/drivers/iio/industrialio-core.c
> @@ -1630,7 +1630,7 @@ static const struct file_operations iio_buffer_fileops = {
> .owner = THIS_MODULE,
> .llseek = noop_llseek,
> .unlocked_ioctl = iio_ioctl,
> - .compat_ioctl = iio_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static int iio_check_unique_scan_index(struct iio_dev *indio_dev)
> diff --git a/drivers/infiniband/core/uverbs_main.c b/drivers/infiniband/core/uverbs_main.c
> index 823beca448e1..f4755c1c9cfa 100644
> --- a/drivers/infiniband/core/uverbs_main.c
> +++ b/drivers/infiniband/core/uverbs_main.c
> @@ -930,7 +930,7 @@ static const struct file_operations uverbs_fops = {
> .release = ib_uverbs_close,
> .llseek = no_llseek,
> .unlocked_ioctl = ib_uverbs_ioctl,
> - .compat_ioctl = ib_uverbs_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static const struct file_operations uverbs_mmap_fops = {
> @@ -941,7 +941,7 @@ static const struct file_operations uverbs_mmap_fops = {
> .release = ib_uverbs_close,
> .llseek = no_llseek,
> .unlocked_ioctl = ib_uverbs_ioctl,
> - .compat_ioctl = ib_uverbs_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static struct ib_client uverbs_client = {
> diff --git a/drivers/media/rc/lirc_dev.c b/drivers/media/rc/lirc_dev.c
> index f862f1b7f996..077209f414ed 100644
> --- a/drivers/media/rc/lirc_dev.c
> +++ b/drivers/media/rc/lirc_dev.c
> @@ -730,9 +730,7 @@ static const struct file_operations lirc_fops = {
> .owner = THIS_MODULE,
> .write = ir_lirc_transmit_ir,
> .unlocked_ioctl = ir_lirc_ioctl,
> -#ifdef CONFIG_COMPAT
> - .compat_ioctl = ir_lirc_ioctl,
> -#endif
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .read = ir_lirc_read,
> .poll = ir_lirc_poll,
> .open = ir_lirc_open,
> diff --git a/drivers/mfd/cros_ec_dev.c b/drivers/mfd/cros_ec_dev.c
> index 999dac752bcc..35a04bcf55da 100644
> --- a/drivers/mfd/cros_ec_dev.c
> +++ b/drivers/mfd/cros_ec_dev.c
> @@ -258,9 +258,7 @@ static const struct file_operations fops = {
> .release = ec_device_release,
> .read = ec_device_read,
> .unlocked_ioctl = ec_device_ioctl,
> -#ifdef CONFIG_COMPAT
> - .compat_ioctl = ec_device_ioctl,
> -#endif
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static void cros_ec_sensors_register(struct cros_ec_dev *ec)
> diff --git a/drivers/misc/vmw_vmci/vmci_host.c b/drivers/misc/vmw_vmci/vmci_host.c
> index 83e0c95d20a4..1308f889e53b 100644
> --- a/drivers/misc/vmw_vmci/vmci_host.c
> +++ b/drivers/misc/vmw_vmci/vmci_host.c
> @@ -983,7 +983,7 @@ static const struct file_operations vmuser_fops = {
> .release = vmci_host_close,
> .poll = vmci_host_poll,
> .unlocked_ioctl = vmci_host_unlocked_ioctl,
> - .compat_ioctl = vmci_host_unlocked_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static struct miscdevice vmci_host_miscdev = {
> diff --git a/drivers/nvdimm/bus.c b/drivers/nvdimm/bus.c
> index 8aae6dcc839f..7449cbc55df7 100644
> --- a/drivers/nvdimm/bus.c
> +++ b/drivers/nvdimm/bus.c
> @@ -1133,7 +1133,7 @@ static const struct file_operations nvdimm_bus_fops = {
> .owner = THIS_MODULE,
> .open = nd_open,
> .unlocked_ioctl = nd_ioctl,
> - .compat_ioctl = nd_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .llseek = noop_llseek,
> };
>
> @@ -1141,7 +1141,7 @@ static const struct file_operations nvdimm_fops = {
> .owner = THIS_MODULE,
> .open = nd_open,
> .unlocked_ioctl = nvdimm_ioctl,
> - .compat_ioctl = nvdimm_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .llseek = noop_llseek,
> };
>
> diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
> index dd8ec1dd9219..2d986f573a29 100644
> --- a/drivers/nvme/host/core.c
> +++ b/drivers/nvme/host/core.c
> @@ -2579,7 +2579,7 @@ static const struct file_operations nvme_dev_fops = {
> .owner = THIS_MODULE,
> .open = nvme_dev_open,
> .unlocked_ioctl = nvme_dev_ioctl,
> - .compat_ioctl = nvme_dev_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static ssize_t nvme_sysfs_reset(struct device *dev,
> diff --git a/drivers/pci/switch/switchtec.c b/drivers/pci/switch/switchtec.c
> index 9940cc70f38b..4296919c784e 100644
> --- a/drivers/pci/switch/switchtec.c
> +++ b/drivers/pci/switch/switchtec.c
> @@ -967,7 +967,7 @@ static const struct file_operations switchtec_fops = {
> .read = switchtec_dev_read,
> .poll = switchtec_dev_poll,
> .unlocked_ioctl = switchtec_dev_ioctl,
> - .compat_ioctl = switchtec_dev_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static void link_event_work(struct work_struct *work)
> diff --git a/drivers/platform/x86/wmi.c b/drivers/platform/x86/wmi.c
> index 04791ea5d97b..e4d0697e07d6 100644
> --- a/drivers/platform/x86/wmi.c
> +++ b/drivers/platform/x86/wmi.c
> @@ -886,7 +886,7 @@ static const struct file_operations wmi_fops = {
> .read = wmi_char_read,
> .open = wmi_char_open,
> .unlocked_ioctl = wmi_ioctl,
> - .compat_ioctl = wmi_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static int wmi_dev_probe(struct device *dev)
> diff --git a/drivers/rpmsg/rpmsg_char.c b/drivers/rpmsg/rpmsg_char.c
> index a76b963a7e50..02aefb2b2d47 100644
> --- a/drivers/rpmsg/rpmsg_char.c
> +++ b/drivers/rpmsg/rpmsg_char.c
> @@ -285,7 +285,7 @@ static const struct file_operations rpmsg_eptdev_fops = {
> .write = rpmsg_eptdev_write,
> .poll = rpmsg_eptdev_poll,
> .unlocked_ioctl = rpmsg_eptdev_ioctl,
> - .compat_ioctl = rpmsg_eptdev_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static ssize_t name_show(struct device *dev, struct device_attribute *attr,
> @@ -446,7 +446,7 @@ static const struct file_operations rpmsg_ctrldev_fops = {
> .open = rpmsg_ctrldev_open,
> .release = rpmsg_ctrldev_release,
> .unlocked_ioctl = rpmsg_ctrldev_ioctl,
> - .compat_ioctl = rpmsg_ctrldev_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static void rpmsg_ctrldev_release_device(struct device *dev)
> diff --git a/drivers/sbus/char/display7seg.c b/drivers/sbus/char/display7seg.c
> index 5c8ed7350a04..064fe7247eb2 100644
> --- a/drivers/sbus/char/display7seg.c
> +++ b/drivers/sbus/char/display7seg.c
> @@ -155,7 +155,7 @@ static long d7s_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
> static const struct file_operations d7s_fops = {
> .owner = THIS_MODULE,
> .unlocked_ioctl = d7s_ioctl,
> - .compat_ioctl = d7s_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .open = d7s_open,
> .release = d7s_release,
> .llseek = noop_llseek,
> diff --git a/drivers/sbus/char/envctrl.c b/drivers/sbus/char/envctrl.c
> index 56e962a01493..a26665ccea56 100644
> --- a/drivers/sbus/char/envctrl.c
> +++ b/drivers/sbus/char/envctrl.c
> @@ -714,9 +714,7 @@ static const struct file_operations envctrl_fops = {
> .owner = THIS_MODULE,
> .read = envctrl_read,
> .unlocked_ioctl = envctrl_ioctl,
> -#ifdef CONFIG_COMPAT
> - .compat_ioctl = envctrl_ioctl,
> -#endif
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .open = envctrl_open,
> .release = envctrl_release,
> .llseek = noop_llseek,
> diff --git a/drivers/scsi/3w-xxxx.c b/drivers/scsi/3w-xxxx.c
> index 471366945bd4..86c9f22a152f 100644
> --- a/drivers/scsi/3w-xxxx.c
> +++ b/drivers/scsi/3w-xxxx.c
> @@ -1047,9 +1047,7 @@ static int tw_chrdev_open(struct inode *inode, struct file *file)
> static const struct file_operations tw_fops = {
> .owner = THIS_MODULE,
> .unlocked_ioctl = tw_chrdev_ioctl,
> -#ifdef CONFIG_COMPAT
> - .compat_ioctl = tw_chrdev_ioctl,
> -#endif
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .open = tw_chrdev_open,
> .release = NULL,
> .llseek = noop_llseek,
> diff --git a/drivers/scsi/cxlflash/main.c b/drivers/scsi/cxlflash/main.c
> index 6637116529aa..d968efeb50e8 100644
> --- a/drivers/scsi/cxlflash/main.c
> +++ b/drivers/scsi/cxlflash/main.c
> @@ -3596,7 +3596,7 @@ static const struct file_operations cxlflash_chr_fops = {
> .owner = THIS_MODULE,
> .open = cxlflash_chr_open,
> .unlocked_ioctl = cxlflash_chr_ioctl,
> - .compat_ioctl = cxlflash_chr_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> /**
> diff --git a/drivers/scsi/esas2r/esas2r_main.c b/drivers/scsi/esas2r/esas2r_main.c
> index c07118617d89..95142292e702 100644
> --- a/drivers/scsi/esas2r/esas2r_main.c
> +++ b/drivers/scsi/esas2r/esas2r_main.c
> @@ -614,7 +614,7 @@ static int __init esas2r_init(void)
>
> /* Handle ioctl calls to "/proc/scsi/esas2r/ATTOnode" */
> static const struct file_operations esas2r_proc_fops = {
> - .compat_ioctl = esas2r_proc_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .unlocked_ioctl = esas2r_proc_ioctl,
> };
>
> diff --git a/drivers/scsi/pmcraid.c b/drivers/scsi/pmcraid.c
> index 4e86994e10e8..8a8c73d3bdad 100644
> --- a/drivers/scsi/pmcraid.c
> +++ b/drivers/scsi/pmcraid.c
> @@ -3999,9 +3999,7 @@ static const struct file_operations pmcraid_fops = {
> .open = pmcraid_chr_open,
> .fasync = pmcraid_chr_fasync,
> .unlocked_ioctl = pmcraid_chr_ioctl,
> -#ifdef CONFIG_COMPAT
> - .compat_ioctl = pmcraid_chr_ioctl,
> -#endif
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .llseek = noop_llseek,
> };
>
> diff --git a/drivers/staging/android/ion/ion.c b/drivers/staging/android/ion/ion.c
> index 99073325b0c0..ef727c235392 100644
> --- a/drivers/staging/android/ion/ion.c
> +++ b/drivers/staging/android/ion/ion.c
> @@ -484,9 +484,7 @@ int ion_query_heaps(struct ion_heap_query *query)
> static const struct file_operations ion_fops = {
> .owner = THIS_MODULE,
> .unlocked_ioctl = ion_ioctl,
> -#ifdef CONFIG_COMPAT
> - .compat_ioctl = ion_ioctl,
> -#endif
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static int debug_shrink_set(void *data, u64 val)
> diff --git a/drivers/staging/vme/devices/vme_user.c b/drivers/staging/vme/devices/vme_user.c
> index 6a33aaa1a49f..568700ffd2f2 100644
> --- a/drivers/staging/vme/devices/vme_user.c
> +++ b/drivers/staging/vme/devices/vme_user.c
> @@ -494,7 +494,7 @@ static const struct file_operations vme_user_fops = {
> .write = vme_user_write,
> .llseek = vme_user_llseek,
> .unlocked_ioctl = vme_user_unlocked_ioctl,
> - .compat_ioctl = vme_user_unlocked_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .mmap = vme_user_mmap,
> };
>
> diff --git a/drivers/tee/tee_core.c b/drivers/tee/tee_core.c
> index dd46b758852a..cb79f28be894 100644
> --- a/drivers/tee/tee_core.c
> +++ b/drivers/tee/tee_core.c
> @@ -670,7 +670,7 @@ static const struct file_operations tee_fops = {
> .open = tee_open,
> .release = tee_release,
> .unlocked_ioctl = tee_ioctl,
> - .compat_ioctl = tee_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static void tee_release_device(struct device *dev)
> diff --git a/drivers/usb/class/cdc-wdm.c b/drivers/usb/class/cdc-wdm.c
> index bec581fb7c63..6e4998c8e64f 100644
> --- a/drivers/usb/class/cdc-wdm.c
> +++ b/drivers/usb/class/cdc-wdm.c
> @@ -724,7 +724,7 @@ static const struct file_operations wdm_fops = {
> .release = wdm_release,
> .poll = wdm_poll,
> .unlocked_ioctl = wdm_ioctl,
> - .compat_ioctl = wdm_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .llseek = noop_llseek,
> };
>
> diff --git a/drivers/usb/class/usbtmc.c b/drivers/usb/class/usbtmc.c
> index 83ffa5a14c3d..d5da47c4c462 100644
> --- a/drivers/usb/class/usbtmc.c
> +++ b/drivers/usb/class/usbtmc.c
> @@ -1460,9 +1460,7 @@ static const struct file_operations fops = {
> .open = usbtmc_open,
> .release = usbtmc_release,
> .unlocked_ioctl = usbtmc_ioctl,
> -#ifdef CONFIG_COMPAT
> - .compat_ioctl = usbtmc_ioctl,
> -#endif
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .fasync = usbtmc_fasync,
> .poll = usbtmc_poll,
> .llseek = default_llseek,
> diff --git a/drivers/video/fbdev/ps3fb.c b/drivers/video/fbdev/ps3fb.c
> index 5ed2db39d823..f9f8ffaf1c4a 100644
> --- a/drivers/video/fbdev/ps3fb.c
> +++ b/drivers/video/fbdev/ps3fb.c
> @@ -949,7 +949,7 @@ static struct fb_ops ps3fb_ops = {
> .fb_mmap = ps3fb_mmap,
> .fb_blank = ps3fb_blank,
> .fb_ioctl = ps3fb_ioctl,
> - .fb_compat_ioctl = ps3fb_ioctl
> + .fb_compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static const struct fb_fix_screeninfo ps3fb_fix = {
> diff --git a/drivers/virt/fsl_hypervisor.c b/drivers/virt/fsl_hypervisor.c
> index 8ba726e600e9..406b7e492214 100644
> --- a/drivers/virt/fsl_hypervisor.c
> +++ b/drivers/virt/fsl_hypervisor.c
> @@ -703,7 +703,7 @@ static const struct file_operations fsl_hv_fops = {
> .poll = fsl_hv_poll,
> .read = fsl_hv_read,
> .unlocked_ioctl = fsl_hv_ioctl,
> - .compat_ioctl = fsl_hv_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static struct miscdevice fsl_hv_misc_dev = {
> diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
> index 6601c9aa5e35..2b5a8ad86305 100644
> --- a/fs/btrfs/super.c
> +++ b/fs/btrfs/super.c
> @@ -2352,7 +2352,7 @@ static const struct super_operations btrfs_super_ops = {
> static const struct file_operations btrfs_ctl_fops = {
> .open = btrfs_control_open,
> .unlocked_ioctl = btrfs_control_ioctl,
> - .compat_ioctl = btrfs_control_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .owner = THIS_MODULE,
> .llseek = noop_llseek,
> };
> diff --git a/fs/ceph/dir.c b/fs/ceph/dir.c
> index da73f29d7faa..eb869fe6774d 100644
> --- a/fs/ceph/dir.c
> +++ b/fs/ceph/dir.c
> @@ -1489,7 +1489,7 @@ const struct file_operations ceph_dir_fops = {
> .open = ceph_open,
> .release = ceph_release,
> .unlocked_ioctl = ceph_ioctl,
> - .compat_ioctl = ceph_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .fsync = ceph_fsync,
> .lock = ceph_lock,
> .flock = ceph_flock,
> diff --git a/fs/ceph/file.c b/fs/ceph/file.c
> index 92ab20433682..85094042cfac 100644
> --- a/fs/ceph/file.c
> +++ b/fs/ceph/file.c
> @@ -1842,7 +1842,7 @@ const struct file_operations ceph_file_fops = {
> .splice_read = generic_file_splice_read,
> .splice_write = iter_file_splice_write,
> .unlocked_ioctl = ceph_ioctl,
> - .compat_ioctl = ceph_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .fallocate = ceph_fallocate,
> };
>
> diff --git a/fs/fuse/dev.c b/fs/fuse/dev.c
> index 11ea2c4a38ab..a6d4a24963ed 100644
> --- a/fs/fuse/dev.c
> +++ b/fs/fuse/dev.c
> @@ -2258,7 +2258,7 @@ const struct file_operations fuse_dev_operations = {
> .release = fuse_dev_release,
> .fasync = fuse_dev_fasync,
> .unlocked_ioctl = fuse_dev_ioctl,
> - .compat_ioctl = fuse_dev_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
> EXPORT_SYMBOL_GPL(fuse_dev_operations);
>
> diff --git a/fs/notify/fanotify/fanotify_user.c b/fs/notify/fanotify/fanotify_user.c
> index 69054886915b..fc4193b384cf 100644
> --- a/fs/notify/fanotify/fanotify_user.c
> +++ b/fs/notify/fanotify/fanotify_user.c
> @@ -447,7 +447,7 @@ static const struct file_operations fanotify_fops = {
> .fasync = NULL,
> .release = fanotify_release,
> .unlocked_ioctl = fanotify_ioctl,
> - .compat_ioctl = fanotify_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .llseek = noop_llseek,
> };
>
> diff --git a/fs/userfaultfd.c b/fs/userfaultfd.c
> index bfa0ec69f924..bc9118b58a8a 100644
> --- a/fs/userfaultfd.c
> +++ b/fs/userfaultfd.c
> @@ -1878,7 +1878,7 @@ static const struct file_operations userfaultfd_fops = {
> .poll = userfaultfd_poll,
> .read = userfaultfd_read,
> .unlocked_ioctl = userfaultfd_ioctl,
> - .compat_ioctl = userfaultfd_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .llseek = noop_llseek,
> };
>
> diff --git a/net/rfkill/core.c b/net/rfkill/core.c
> index 1355f5ca8d22..ba68b53f58ab 100644
> --- a/net/rfkill/core.c
> +++ b/net/rfkill/core.c
> @@ -1323,7 +1323,7 @@ static const struct file_operations rfkill_fops = {
> .release = rfkill_fop_release,
> #ifdef CONFIG_RFKILL_INPUT
> .unlocked_ioctl = rfkill_fop_ioctl,
> - .compat_ioctl = rfkill_fop_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> #endif
> .llseek = no_llseek,
> };
> --
> 2.18.0
>
> _______________________________________________
> dri-devel mailing list
> dri-devel@lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/dri-devel
--
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch
_______________________________________________
Linux-nvdimm mailing list
Linux-nvdimm@lists.01.org
https://lists.01.org/mailman/listinfo/linux-nvdimm
^ permalink raw reply [flat|nested] 141+ messages in thread
* Re: [PATCH v2 05/17] compat_ioctl: move more drivers to generic_compat_ioctl_ptrarg
@ 2018-09-12 15:58 ` Daniel Vetter
0 siblings, 0 replies; 141+ messages in thread
From: Daniel Vetter @ 2018-09-12 15:58 UTC (permalink / raw)
To: Arnd Bergmann
Cc: Linux Fbdev development list, linux-iio-u79uwXL29TY76Z2rM5mHXA,
Linux PCI, linux-remoteproc-u79uwXL29TY76Z2rM5mHXA, dri-devel,
platform-driver-x86-u79uwXL29TY76Z2rM5mHXA,
sparclinux-u79uwXL29TY76Z2rM5mHXA, driverdevel,
linux-scsi-u79uwXL29TY76Z2rM5mHXA,
linux-nvdimm-hn68Rpc1hR1g9hUCZPvPmw,
linux-rdma-u79uwXL29TY76Z2rM5mHXA,
qat-linux-ral2JQCrhuEAvxtiuMwx3w, amd-gfx list,
linux-input-u79uwXL29TY76Z2rM5mHXA,
open list:DMA BUFFER SHARING FRAMEWORK,
moderated list:DMA BUFFER SHARING FRAMEWORK,
linux-nvme-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
ceph-devel-u79uwXL29TY76Z2rM5mHXA, Greg Kroah-Hartman, USB list,
linux-wireless-u79uwXL29TY76Z2rM5mHXA, Linux Kernel Mailing List
On Wed, Sep 12, 2018 at 5:08 PM, Arnd Bergmann <arnd@arndb.de> wrote:
> The .ioctl and .compat_ioctl file operations have the same prototype so
> they can both point to the same function, which works great almost all
> the time when all the commands are compatible.
>
> One exception is the s390 architecture, where a compat pointer is only
> 31 bit wide, and converting it into a 64-bit pointer requires calling
> compat_ptr(). Most drivers here will ever run in s390, but since we now
> have a generic helper for it, it's easy enough to use it consistently.
>
> I double-checked all these drivers to ensure that all ioctl arguments
> are used as pointers or are ignored, but are not interpreted as integer
> values.
>
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
At least for the drm and dma-buf bits.
-Daniel
> ---
> drivers/android/binder.c | 2 +-
> drivers/crypto/qat/qat_common/adf_ctl_drv.c | 2 +-
> drivers/dma-buf/dma-buf.c | 4 +---
> drivers/dma-buf/sw_sync.c | 2 +-
> drivers/dma-buf/sync_file.c | 2 +-
> drivers/gpu/drm/amd/amdkfd/kfd_chardev.c | 2 +-
> drivers/hid/hidraw.c | 4 +---
> drivers/iio/industrialio-core.c | 2 +-
> drivers/infiniband/core/uverbs_main.c | 4 ++--
> drivers/media/rc/lirc_dev.c | 4 +---
> drivers/mfd/cros_ec_dev.c | 4 +---
> drivers/misc/vmw_vmci/vmci_host.c | 2 +-
> drivers/nvdimm/bus.c | 4 ++--
> drivers/nvme/host/core.c | 2 +-
> drivers/pci/switch/switchtec.c | 2 +-
> drivers/platform/x86/wmi.c | 2 +-
> drivers/rpmsg/rpmsg_char.c | 4 ++--
> drivers/sbus/char/display7seg.c | 2 +-
> drivers/sbus/char/envctrl.c | 4 +---
> drivers/scsi/3w-xxxx.c | 4 +---
> drivers/scsi/cxlflash/main.c | 2 +-
> drivers/scsi/esas2r/esas2r_main.c | 2 +-
> drivers/scsi/pmcraid.c | 4 +---
> drivers/staging/android/ion/ion.c | 4 +---
> drivers/staging/vme/devices/vme_user.c | 2 +-
> drivers/tee/tee_core.c | 2 +-
> drivers/usb/class/cdc-wdm.c | 2 +-
> drivers/usb/class/usbtmc.c | 4 +---
> drivers/video/fbdev/ps3fb.c | 2 +-
> drivers/virt/fsl_hypervisor.c | 2 +-
> fs/btrfs/super.c | 2 +-
> fs/ceph/dir.c | 2 +-
> fs/ceph/file.c | 2 +-
> fs/fuse/dev.c | 2 +-
> fs/notify/fanotify/fanotify_user.c | 2 +-
> fs/userfaultfd.c | 2 +-
> net/rfkill/core.c | 2 +-
> 37 files changed, 40 insertions(+), 58 deletions(-)
>
> diff --git a/drivers/android/binder.c b/drivers/android/binder.c
> index d58763b6b009..d2464f5759f8 100644
> --- a/drivers/android/binder.c
> +++ b/drivers/android/binder.c
> @@ -5576,7 +5576,7 @@ static const struct file_operations binder_fops = {
> .owner = THIS_MODULE,
> .poll = binder_poll,
> .unlocked_ioctl = binder_ioctl,
> - .compat_ioctl = binder_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .mmap = binder_mmap,
> .open = binder_open,
> .flush = binder_flush,
> diff --git a/drivers/crypto/qat/qat_common/adf_ctl_drv.c b/drivers/crypto/qat/qat_common/adf_ctl_drv.c
> index abc7a7f64d64..8ff77a70addc 100644
> --- a/drivers/crypto/qat/qat_common/adf_ctl_drv.c
> +++ b/drivers/crypto/qat/qat_common/adf_ctl_drv.c
> @@ -68,7 +68,7 @@ static long adf_ctl_ioctl(struct file *fp, unsigned int cmd, unsigned long arg);
> static const struct file_operations adf_ctl_ops = {
> .owner = THIS_MODULE,
> .unlocked_ioctl = adf_ctl_ioctl,
> - .compat_ioctl = adf_ctl_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> struct adf_ctl_drv_info {
> diff --git a/drivers/dma-buf/dma-buf.c b/drivers/dma-buf/dma-buf.c
> index 13884474d158..a6d7dc4cf7e9 100644
> --- a/drivers/dma-buf/dma-buf.c
> +++ b/drivers/dma-buf/dma-buf.c
> @@ -325,9 +325,7 @@ static const struct file_operations dma_buf_fops = {
> .llseek = dma_buf_llseek,
> .poll = dma_buf_poll,
> .unlocked_ioctl = dma_buf_ioctl,
> -#ifdef CONFIG_COMPAT
> - .compat_ioctl = dma_buf_ioctl,
> -#endif
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> /*
> diff --git a/drivers/dma-buf/sw_sync.c b/drivers/dma-buf/sw_sync.c
> index 53c1d6d36a64..bc810506d487 100644
> --- a/drivers/dma-buf/sw_sync.c
> +++ b/drivers/dma-buf/sw_sync.c
> @@ -419,5 +419,5 @@ const struct file_operations sw_sync_debugfs_fops = {
> .open = sw_sync_debugfs_open,
> .release = sw_sync_debugfs_release,
> .unlocked_ioctl = sw_sync_ioctl,
> - .compat_ioctl = sw_sync_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
> diff --git a/drivers/dma-buf/sync_file.c b/drivers/dma-buf/sync_file.c
> index 35dd06479867..1c64ed60c658 100644
> --- a/drivers/dma-buf/sync_file.c
> +++ b/drivers/dma-buf/sync_file.c
> @@ -488,5 +488,5 @@ static const struct file_operations sync_file_fops = {
> .release = sync_file_release,
> .poll = sync_file_poll,
> .unlocked_ioctl = sync_file_ioctl,
> - .compat_ioctl = sync_file_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
> diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
> index 297b36c26a05..1d7b1e3c3ebe 100644
> --- a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
> +++ b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
> @@ -47,7 +47,7 @@ static const char kfd_dev_name[] = "kfd";
> static const struct file_operations kfd_fops = {
> .owner = THIS_MODULE,
> .unlocked_ioctl = kfd_ioctl,
> - .compat_ioctl = kfd_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .open = kfd_open,
> .mmap = kfd_mmap,
> };
> diff --git a/drivers/hid/hidraw.c b/drivers/hid/hidraw.c
> index 4a44e48e08b2..e44b64812850 100644
> --- a/drivers/hid/hidraw.c
> +++ b/drivers/hid/hidraw.c
> @@ -476,9 +476,7 @@ static const struct file_operations hidraw_ops = {
> .release = hidraw_release,
> .unlocked_ioctl = hidraw_ioctl,
> .fasync = hidraw_fasync,
> -#ifdef CONFIG_COMPAT
> - .compat_ioctl = hidraw_ioctl,
> -#endif
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .llseek = noop_llseek,
> };
>
> diff --git a/drivers/iio/industrialio-core.c b/drivers/iio/industrialio-core.c
> index a062cfddc5af..22844b94b0e9 100644
> --- a/drivers/iio/industrialio-core.c
> +++ b/drivers/iio/industrialio-core.c
> @@ -1630,7 +1630,7 @@ static const struct file_operations iio_buffer_fileops = {
> .owner = THIS_MODULE,
> .llseek = noop_llseek,
> .unlocked_ioctl = iio_ioctl,
> - .compat_ioctl = iio_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static int iio_check_unique_scan_index(struct iio_dev *indio_dev)
> diff --git a/drivers/infiniband/core/uverbs_main.c b/drivers/infiniband/core/uverbs_main.c
> index 823beca448e1..f4755c1c9cfa 100644
> --- a/drivers/infiniband/core/uverbs_main.c
> +++ b/drivers/infiniband/core/uverbs_main.c
> @@ -930,7 +930,7 @@ static const struct file_operations uverbs_fops = {
> .release = ib_uverbs_close,
> .llseek = no_llseek,
> .unlocked_ioctl = ib_uverbs_ioctl,
> - .compat_ioctl = ib_uverbs_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static const struct file_operations uverbs_mmap_fops = {
> @@ -941,7 +941,7 @@ static const struct file_operations uverbs_mmap_fops = {
> .release = ib_uverbs_close,
> .llseek = no_llseek,
> .unlocked_ioctl = ib_uverbs_ioctl,
> - .compat_ioctl = ib_uverbs_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static struct ib_client uverbs_client = {
> diff --git a/drivers/media/rc/lirc_dev.c b/drivers/media/rc/lirc_dev.c
> index f862f1b7f996..077209f414ed 100644
> --- a/drivers/media/rc/lirc_dev.c
> +++ b/drivers/media/rc/lirc_dev.c
> @@ -730,9 +730,7 @@ static const struct file_operations lirc_fops = {
> .owner = THIS_MODULE,
> .write = ir_lirc_transmit_ir,
> .unlocked_ioctl = ir_lirc_ioctl,
> -#ifdef CONFIG_COMPAT
> - .compat_ioctl = ir_lirc_ioctl,
> -#endif
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .read = ir_lirc_read,
> .poll = ir_lirc_poll,
> .open = ir_lirc_open,
> diff --git a/drivers/mfd/cros_ec_dev.c b/drivers/mfd/cros_ec_dev.c
> index 999dac752bcc..35a04bcf55da 100644
> --- a/drivers/mfd/cros_ec_dev.c
> +++ b/drivers/mfd/cros_ec_dev.c
> @@ -258,9 +258,7 @@ static const struct file_operations fops = {
> .release = ec_device_release,
> .read = ec_device_read,
> .unlocked_ioctl = ec_device_ioctl,
> -#ifdef CONFIG_COMPAT
> - .compat_ioctl = ec_device_ioctl,
> -#endif
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static void cros_ec_sensors_register(struct cros_ec_dev *ec)
> diff --git a/drivers/misc/vmw_vmci/vmci_host.c b/drivers/misc/vmw_vmci/vmci_host.c
> index 83e0c95d20a4..1308f889e53b 100644
> --- a/drivers/misc/vmw_vmci/vmci_host.c
> +++ b/drivers/misc/vmw_vmci/vmci_host.c
> @@ -983,7 +983,7 @@ static const struct file_operations vmuser_fops = {
> .release = vmci_host_close,
> .poll = vmci_host_poll,
> .unlocked_ioctl = vmci_host_unlocked_ioctl,
> - .compat_ioctl = vmci_host_unlocked_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static struct miscdevice vmci_host_miscdev = {
> diff --git a/drivers/nvdimm/bus.c b/drivers/nvdimm/bus.c
> index 8aae6dcc839f..7449cbc55df7 100644
> --- a/drivers/nvdimm/bus.c
> +++ b/drivers/nvdimm/bus.c
> @@ -1133,7 +1133,7 @@ static const struct file_operations nvdimm_bus_fops = {
> .owner = THIS_MODULE,
> .open = nd_open,
> .unlocked_ioctl = nd_ioctl,
> - .compat_ioctl = nd_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .llseek = noop_llseek,
> };
>
> @@ -1141,7 +1141,7 @@ static const struct file_operations nvdimm_fops = {
> .owner = THIS_MODULE,
> .open = nd_open,
> .unlocked_ioctl = nvdimm_ioctl,
> - .compat_ioctl = nvdimm_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .llseek = noop_llseek,
> };
>
> diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
> index dd8ec1dd9219..2d986f573a29 100644
> --- a/drivers/nvme/host/core.c
> +++ b/drivers/nvme/host/core.c
> @@ -2579,7 +2579,7 @@ static const struct file_operations nvme_dev_fops = {
> .owner = THIS_MODULE,
> .open = nvme_dev_open,
> .unlocked_ioctl = nvme_dev_ioctl,
> - .compat_ioctl = nvme_dev_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static ssize_t nvme_sysfs_reset(struct device *dev,
> diff --git a/drivers/pci/switch/switchtec.c b/drivers/pci/switch/switchtec.c
> index 9940cc70f38b..4296919c784e 100644
> --- a/drivers/pci/switch/switchtec.c
> +++ b/drivers/pci/switch/switchtec.c
> @@ -967,7 +967,7 @@ static const struct file_operations switchtec_fops = {
> .read = switchtec_dev_read,
> .poll = switchtec_dev_poll,
> .unlocked_ioctl = switchtec_dev_ioctl,
> - .compat_ioctl = switchtec_dev_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static void link_event_work(struct work_struct *work)
> diff --git a/drivers/platform/x86/wmi.c b/drivers/platform/x86/wmi.c
> index 04791ea5d97b..e4d0697e07d6 100644
> --- a/drivers/platform/x86/wmi.c
> +++ b/drivers/platform/x86/wmi.c
> @@ -886,7 +886,7 @@ static const struct file_operations wmi_fops = {
> .read = wmi_char_read,
> .open = wmi_char_open,
> .unlocked_ioctl = wmi_ioctl,
> - .compat_ioctl = wmi_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static int wmi_dev_probe(struct device *dev)
> diff --git a/drivers/rpmsg/rpmsg_char.c b/drivers/rpmsg/rpmsg_char.c
> index a76b963a7e50..02aefb2b2d47 100644
> --- a/drivers/rpmsg/rpmsg_char.c
> +++ b/drivers/rpmsg/rpmsg_char.c
> @@ -285,7 +285,7 @@ static const struct file_operations rpmsg_eptdev_fops = {
> .write = rpmsg_eptdev_write,
> .poll = rpmsg_eptdev_poll,
> .unlocked_ioctl = rpmsg_eptdev_ioctl,
> - .compat_ioctl = rpmsg_eptdev_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static ssize_t name_show(struct device *dev, struct device_attribute *attr,
> @@ -446,7 +446,7 @@ static const struct file_operations rpmsg_ctrldev_fops = {
> .open = rpmsg_ctrldev_open,
> .release = rpmsg_ctrldev_release,
> .unlocked_ioctl = rpmsg_ctrldev_ioctl,
> - .compat_ioctl = rpmsg_ctrldev_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static void rpmsg_ctrldev_release_device(struct device *dev)
> diff --git a/drivers/sbus/char/display7seg.c b/drivers/sbus/char/display7seg.c
> index 5c8ed7350a04..064fe7247eb2 100644
> --- a/drivers/sbus/char/display7seg.c
> +++ b/drivers/sbus/char/display7seg.c
> @@ -155,7 +155,7 @@ static long d7s_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
> static const struct file_operations d7s_fops = {
> .owner = THIS_MODULE,
> .unlocked_ioctl = d7s_ioctl,
> - .compat_ioctl = d7s_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .open = d7s_open,
> .release = d7s_release,
> .llseek = noop_llseek,
> diff --git a/drivers/sbus/char/envctrl.c b/drivers/sbus/char/envctrl.c
> index 56e962a01493..a26665ccea56 100644
> --- a/drivers/sbus/char/envctrl.c
> +++ b/drivers/sbus/char/envctrl.c
> @@ -714,9 +714,7 @@ static const struct file_operations envctrl_fops = {
> .owner = THIS_MODULE,
> .read = envctrl_read,
> .unlocked_ioctl = envctrl_ioctl,
> -#ifdef CONFIG_COMPAT
> - .compat_ioctl = envctrl_ioctl,
> -#endif
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .open = envctrl_open,
> .release = envctrl_release,
> .llseek = noop_llseek,
> diff --git a/drivers/scsi/3w-xxxx.c b/drivers/scsi/3w-xxxx.c
> index 471366945bd4..86c9f22a152f 100644
> --- a/drivers/scsi/3w-xxxx.c
> +++ b/drivers/scsi/3w-xxxx.c
> @@ -1047,9 +1047,7 @@ static int tw_chrdev_open(struct inode *inode, struct file *file)
> static const struct file_operations tw_fops = {
> .owner = THIS_MODULE,
> .unlocked_ioctl = tw_chrdev_ioctl,
> -#ifdef CONFIG_COMPAT
> - .compat_ioctl = tw_chrdev_ioctl,
> -#endif
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .open = tw_chrdev_open,
> .release = NULL,
> .llseek = noop_llseek,
> diff --git a/drivers/scsi/cxlflash/main.c b/drivers/scsi/cxlflash/main.c
> index 6637116529aa..d968efeb50e8 100644
> --- a/drivers/scsi/cxlflash/main.c
> +++ b/drivers/scsi/cxlflash/main.c
> @@ -3596,7 +3596,7 @@ static const struct file_operations cxlflash_chr_fops = {
> .owner = THIS_MODULE,
> .open = cxlflash_chr_open,
> .unlocked_ioctl = cxlflash_chr_ioctl,
> - .compat_ioctl = cxlflash_chr_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> /**
> diff --git a/drivers/scsi/esas2r/esas2r_main.c b/drivers/scsi/esas2r/esas2r_main.c
> index c07118617d89..95142292e702 100644
> --- a/drivers/scsi/esas2r/esas2r_main.c
> +++ b/drivers/scsi/esas2r/esas2r_main.c
> @@ -614,7 +614,7 @@ static int __init esas2r_init(void)
>
> /* Handle ioctl calls to "/proc/scsi/esas2r/ATTOnode" */
> static const struct file_operations esas2r_proc_fops = {
> - .compat_ioctl = esas2r_proc_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .unlocked_ioctl = esas2r_proc_ioctl,
> };
>
> diff --git a/drivers/scsi/pmcraid.c b/drivers/scsi/pmcraid.c
> index 4e86994e10e8..8a8c73d3bdad 100644
> --- a/drivers/scsi/pmcraid.c
> +++ b/drivers/scsi/pmcraid.c
> @@ -3999,9 +3999,7 @@ static const struct file_operations pmcraid_fops = {
> .open = pmcraid_chr_open,
> .fasync = pmcraid_chr_fasync,
> .unlocked_ioctl = pmcraid_chr_ioctl,
> -#ifdef CONFIG_COMPAT
> - .compat_ioctl = pmcraid_chr_ioctl,
> -#endif
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .llseek = noop_llseek,
> };
>
> diff --git a/drivers/staging/android/ion/ion.c b/drivers/staging/android/ion/ion.c
> index 99073325b0c0..ef727c235392 100644
> --- a/drivers/staging/android/ion/ion.c
> +++ b/drivers/staging/android/ion/ion.c
> @@ -484,9 +484,7 @@ int ion_query_heaps(struct ion_heap_query *query)
> static const struct file_operations ion_fops = {
> .owner = THIS_MODULE,
> .unlocked_ioctl = ion_ioctl,
> -#ifdef CONFIG_COMPAT
> - .compat_ioctl = ion_ioctl,
> -#endif
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static int debug_shrink_set(void *data, u64 val)
> diff --git a/drivers/staging/vme/devices/vme_user.c b/drivers/staging/vme/devices/vme_user.c
> index 6a33aaa1a49f..568700ffd2f2 100644
> --- a/drivers/staging/vme/devices/vme_user.c
> +++ b/drivers/staging/vme/devices/vme_user.c
> @@ -494,7 +494,7 @@ static const struct file_operations vme_user_fops = {
> .write = vme_user_write,
> .llseek = vme_user_llseek,
> .unlocked_ioctl = vme_user_unlocked_ioctl,
> - .compat_ioctl = vme_user_unlocked_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .mmap = vme_user_mmap,
> };
>
> diff --git a/drivers/tee/tee_core.c b/drivers/tee/tee_core.c
> index dd46b758852a..cb79f28be894 100644
> --- a/drivers/tee/tee_core.c
> +++ b/drivers/tee/tee_core.c
> @@ -670,7 +670,7 @@ static const struct file_operations tee_fops = {
> .open = tee_open,
> .release = tee_release,
> .unlocked_ioctl = tee_ioctl,
> - .compat_ioctl = tee_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static void tee_release_device(struct device *dev)
> diff --git a/drivers/usb/class/cdc-wdm.c b/drivers/usb/class/cdc-wdm.c
> index bec581fb7c63..6e4998c8e64f 100644
> --- a/drivers/usb/class/cdc-wdm.c
> +++ b/drivers/usb/class/cdc-wdm.c
> @@ -724,7 +724,7 @@ static const struct file_operations wdm_fops = {
> .release = wdm_release,
> .poll = wdm_poll,
> .unlocked_ioctl = wdm_ioctl,
> - .compat_ioctl = wdm_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .llseek = noop_llseek,
> };
>
> diff --git a/drivers/usb/class/usbtmc.c b/drivers/usb/class/usbtmc.c
> index 83ffa5a14c3d..d5da47c4c462 100644
> --- a/drivers/usb/class/usbtmc.c
> +++ b/drivers/usb/class/usbtmc.c
> @@ -1460,9 +1460,7 @@ static const struct file_operations fops = {
> .open = usbtmc_open,
> .release = usbtmc_release,
> .unlocked_ioctl = usbtmc_ioctl,
> -#ifdef CONFIG_COMPAT
> - .compat_ioctl = usbtmc_ioctl,
> -#endif
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .fasync = usbtmc_fasync,
> .poll = usbtmc_poll,
> .llseek = default_llseek,
> diff --git a/drivers/video/fbdev/ps3fb.c b/drivers/video/fbdev/ps3fb.c
> index 5ed2db39d823..f9f8ffaf1c4a 100644
> --- a/drivers/video/fbdev/ps3fb.c
> +++ b/drivers/video/fbdev/ps3fb.c
> @@ -949,7 +949,7 @@ static struct fb_ops ps3fb_ops = {
> .fb_mmap = ps3fb_mmap,
> .fb_blank = ps3fb_blank,
> .fb_ioctl = ps3fb_ioctl,
> - .fb_compat_ioctl = ps3fb_ioctl
> + .fb_compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static const struct fb_fix_screeninfo ps3fb_fix = {
> diff --git a/drivers/virt/fsl_hypervisor.c b/drivers/virt/fsl_hypervisor.c
> index 8ba726e600e9..406b7e492214 100644
> --- a/drivers/virt/fsl_hypervisor.c
> +++ b/drivers/virt/fsl_hypervisor.c
> @@ -703,7 +703,7 @@ static const struct file_operations fsl_hv_fops = {
> .poll = fsl_hv_poll,
> .read = fsl_hv_read,
> .unlocked_ioctl = fsl_hv_ioctl,
> - .compat_ioctl = fsl_hv_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static struct miscdevice fsl_hv_misc_dev = {
> diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
> index 6601c9aa5e35..2b5a8ad86305 100644
> --- a/fs/btrfs/super.c
> +++ b/fs/btrfs/super.c
> @@ -2352,7 +2352,7 @@ static const struct super_operations btrfs_super_ops = {
> static const struct file_operations btrfs_ctl_fops = {
> .open = btrfs_control_open,
> .unlocked_ioctl = btrfs_control_ioctl,
> - .compat_ioctl = btrfs_control_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .owner = THIS_MODULE,
> .llseek = noop_llseek,
> };
> diff --git a/fs/ceph/dir.c b/fs/ceph/dir.c
> index da73f29d7faa..eb869fe6774d 100644
> --- a/fs/ceph/dir.c
> +++ b/fs/ceph/dir.c
> @@ -1489,7 +1489,7 @@ const struct file_operations ceph_dir_fops = {
> .open = ceph_open,
> .release = ceph_release,
> .unlocked_ioctl = ceph_ioctl,
> - .compat_ioctl = ceph_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .fsync = ceph_fsync,
> .lock = ceph_lock,
> .flock = ceph_flock,
> diff --git a/fs/ceph/file.c b/fs/ceph/file.c
> index 92ab20433682..85094042cfac 100644
> --- a/fs/ceph/file.c
> +++ b/fs/ceph/file.c
> @@ -1842,7 +1842,7 @@ const struct file_operations ceph_file_fops = {
> .splice_read = generic_file_splice_read,
> .splice_write = iter_file_splice_write,
> .unlocked_ioctl = ceph_ioctl,
> - .compat_ioctl = ceph_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .fallocate = ceph_fallocate,
> };
>
> diff --git a/fs/fuse/dev.c b/fs/fuse/dev.c
> index 11ea2c4a38ab..a6d4a24963ed 100644
> --- a/fs/fuse/dev.c
> +++ b/fs/fuse/dev.c
> @@ -2258,7 +2258,7 @@ const struct file_operations fuse_dev_operations = {
> .release = fuse_dev_release,
> .fasync = fuse_dev_fasync,
> .unlocked_ioctl = fuse_dev_ioctl,
> - .compat_ioctl = fuse_dev_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
> EXPORT_SYMBOL_GPL(fuse_dev_operations);
>
> diff --git a/fs/notify/fanotify/fanotify_user.c b/fs/notify/fanotify/fanotify_user.c
> index 69054886915b..fc4193b384cf 100644
> --- a/fs/notify/fanotify/fanotify_user.c
> +++ b/fs/notify/fanotify/fanotify_user.c
> @@ -447,7 +447,7 @@ static const struct file_operations fanotify_fops = {
> .fasync = NULL,
> .release = fanotify_release,
> .unlocked_ioctl = fanotify_ioctl,
> - .compat_ioctl = fanotify_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .llseek = noop_llseek,
> };
>
> diff --git a/fs/userfaultfd.c b/fs/userfaultfd.c
> index bfa0ec69f924..bc9118b58a8a 100644
> --- a/fs/userfaultfd.c
> +++ b/fs/userfaultfd.c
> @@ -1878,7 +1878,7 @@ static const struct file_operations userfaultfd_fops = {
> .poll = userfaultfd_poll,
> .read = userfaultfd_read,
> .unlocked_ioctl = userfaultfd_ioctl,
> - .compat_ioctl = userfaultfd_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .llseek = noop_llseek,
> };
>
> diff --git a/net/rfkill/core.c b/net/rfkill/core.c
> index 1355f5ca8d22..ba68b53f58ab 100644
> --- a/net/rfkill/core.c
> +++ b/net/rfkill/core.c
> @@ -1323,7 +1323,7 @@ static const struct file_operations rfkill_fops = {
> .release = rfkill_fop_release,
> #ifdef CONFIG_RFKILL_INPUT
> .unlocked_ioctl = rfkill_fop_ioctl,
> - .compat_ioctl = rfkill_fop_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> #endif
> .llseek = no_llseek,
> };
> --
> 2.18.0
>
> _______________________________________________
> dri-devel mailing list
> dri-devel@lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/dri-devel
--
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch
^ permalink raw reply [flat|nested] 141+ messages in thread
* [v2,05/17] compat_ioctl: move more drivers to generic_compat_ioctl_ptrarg
@ 2018-09-12 15:58 ` Daniel Vetter
0 siblings, 0 replies; 141+ messages in thread
From: Daniel Vetter @ 2018-09-12 15:58 UTC (permalink / raw)
To: Arnd Bergmann
Cc: Al Viro, Linux Fbdev development list, linux-iio, Linux PCI,
linux-remoteproc, linux-nvme, platform-driver-x86, sparclinux,
driverdevel, linux-scsi, linux-nvdimm, linux-rdma, qat-linux,
amd-gfx list, linux-input,
open list:DMA BUFFER SHARING FRAMEWORK,
moderated list:DMA BUFFER SHARING FRAMEWORK, dri-devel,
ceph-devel, Greg Kroah-Hartman, USB list, linux-wireless,
Linux Kernel Mailing List, linux-crypto, netdev, linux-fsdevel,
linuxppc-dev, David S. Miller, linux-btrfs
On Wed, Sep 12, 2018 at 5:08 PM, Arnd Bergmann <arnd@arndb.de> wrote:
> The .ioctl and .compat_ioctl file operations have the same prototype so
> they can both point to the same function, which works great almost all
> the time when all the commands are compatible.
>
> One exception is the s390 architecture, where a compat pointer is only
> 31 bit wide, and converting it into a 64-bit pointer requires calling
> compat_ptr(). Most drivers here will ever run in s390, but since we now
> have a generic helper for it, it's easy enough to use it consistently.
>
> I double-checked all these drivers to ensure that all ioctl arguments
> are used as pointers or are ignored, but are not interpreted as integer
> values.
>
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
At least for the drm and dma-buf bits.
-Daniel
> ---
> drivers/android/binder.c | 2 +-
> drivers/crypto/qat/qat_common/adf_ctl_drv.c | 2 +-
> drivers/dma-buf/dma-buf.c | 4 +---
> drivers/dma-buf/sw_sync.c | 2 +-
> drivers/dma-buf/sync_file.c | 2 +-
> drivers/gpu/drm/amd/amdkfd/kfd_chardev.c | 2 +-
> drivers/hid/hidraw.c | 4 +---
> drivers/iio/industrialio-core.c | 2 +-
> drivers/infiniband/core/uverbs_main.c | 4 ++--
> drivers/media/rc/lirc_dev.c | 4 +---
> drivers/mfd/cros_ec_dev.c | 4 +---
> drivers/misc/vmw_vmci/vmci_host.c | 2 +-
> drivers/nvdimm/bus.c | 4 ++--
> drivers/nvme/host/core.c | 2 +-
> drivers/pci/switch/switchtec.c | 2 +-
> drivers/platform/x86/wmi.c | 2 +-
> drivers/rpmsg/rpmsg_char.c | 4 ++--
> drivers/sbus/char/display7seg.c | 2 +-
> drivers/sbus/char/envctrl.c | 4 +---
> drivers/scsi/3w-xxxx.c | 4 +---
> drivers/scsi/cxlflash/main.c | 2 +-
> drivers/scsi/esas2r/esas2r_main.c | 2 +-
> drivers/scsi/pmcraid.c | 4 +---
> drivers/staging/android/ion/ion.c | 4 +---
> drivers/staging/vme/devices/vme_user.c | 2 +-
> drivers/tee/tee_core.c | 2 +-
> drivers/usb/class/cdc-wdm.c | 2 +-
> drivers/usb/class/usbtmc.c | 4 +---
> drivers/video/fbdev/ps3fb.c | 2 +-
> drivers/virt/fsl_hypervisor.c | 2 +-
> fs/btrfs/super.c | 2 +-
> fs/ceph/dir.c | 2 +-
> fs/ceph/file.c | 2 +-
> fs/fuse/dev.c | 2 +-
> fs/notify/fanotify/fanotify_user.c | 2 +-
> fs/userfaultfd.c | 2 +-
> net/rfkill/core.c | 2 +-
> 37 files changed, 40 insertions(+), 58 deletions(-)
>
> diff --git a/drivers/android/binder.c b/drivers/android/binder.c
> index d58763b6b009..d2464f5759f8 100644
> --- a/drivers/android/binder.c
> +++ b/drivers/android/binder.c
> @@ -5576,7 +5576,7 @@ static const struct file_operations binder_fops = {
> .owner = THIS_MODULE,
> .poll = binder_poll,
> .unlocked_ioctl = binder_ioctl,
> - .compat_ioctl = binder_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .mmap = binder_mmap,
> .open = binder_open,
> .flush = binder_flush,
> diff --git a/drivers/crypto/qat/qat_common/adf_ctl_drv.c b/drivers/crypto/qat/qat_common/adf_ctl_drv.c
> index abc7a7f64d64..8ff77a70addc 100644
> --- a/drivers/crypto/qat/qat_common/adf_ctl_drv.c
> +++ b/drivers/crypto/qat/qat_common/adf_ctl_drv.c
> @@ -68,7 +68,7 @@ static long adf_ctl_ioctl(struct file *fp, unsigned int cmd, unsigned long arg);
> static const struct file_operations adf_ctl_ops = {
> .owner = THIS_MODULE,
> .unlocked_ioctl = adf_ctl_ioctl,
> - .compat_ioctl = adf_ctl_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> struct adf_ctl_drv_info {
> diff --git a/drivers/dma-buf/dma-buf.c b/drivers/dma-buf/dma-buf.c
> index 13884474d158..a6d7dc4cf7e9 100644
> --- a/drivers/dma-buf/dma-buf.c
> +++ b/drivers/dma-buf/dma-buf.c
> @@ -325,9 +325,7 @@ static const struct file_operations dma_buf_fops = {
> .llseek = dma_buf_llseek,
> .poll = dma_buf_poll,
> .unlocked_ioctl = dma_buf_ioctl,
> -#ifdef CONFIG_COMPAT
> - .compat_ioctl = dma_buf_ioctl,
> -#endif
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> /*
> diff --git a/drivers/dma-buf/sw_sync.c b/drivers/dma-buf/sw_sync.c
> index 53c1d6d36a64..bc810506d487 100644
> --- a/drivers/dma-buf/sw_sync.c
> +++ b/drivers/dma-buf/sw_sync.c
> @@ -419,5 +419,5 @@ const struct file_operations sw_sync_debugfs_fops = {
> .open = sw_sync_debugfs_open,
> .release = sw_sync_debugfs_release,
> .unlocked_ioctl = sw_sync_ioctl,
> - .compat_ioctl = sw_sync_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
> diff --git a/drivers/dma-buf/sync_file.c b/drivers/dma-buf/sync_file.c
> index 35dd06479867..1c64ed60c658 100644
> --- a/drivers/dma-buf/sync_file.c
> +++ b/drivers/dma-buf/sync_file.c
> @@ -488,5 +488,5 @@ static const struct file_operations sync_file_fops = {
> .release = sync_file_release,
> .poll = sync_file_poll,
> .unlocked_ioctl = sync_file_ioctl,
> - .compat_ioctl = sync_file_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
> diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
> index 297b36c26a05..1d7b1e3c3ebe 100644
> --- a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
> +++ b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
> @@ -47,7 +47,7 @@ static const char kfd_dev_name[] = "kfd";
> static const struct file_operations kfd_fops = {
> .owner = THIS_MODULE,
> .unlocked_ioctl = kfd_ioctl,
> - .compat_ioctl = kfd_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .open = kfd_open,
> .mmap = kfd_mmap,
> };
> diff --git a/drivers/hid/hidraw.c b/drivers/hid/hidraw.c
> index 4a44e48e08b2..e44b64812850 100644
> --- a/drivers/hid/hidraw.c
> +++ b/drivers/hid/hidraw.c
> @@ -476,9 +476,7 @@ static const struct file_operations hidraw_ops = {
> .release = hidraw_release,
> .unlocked_ioctl = hidraw_ioctl,
> .fasync = hidraw_fasync,
> -#ifdef CONFIG_COMPAT
> - .compat_ioctl = hidraw_ioctl,
> -#endif
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .llseek = noop_llseek,
> };
>
> diff --git a/drivers/iio/industrialio-core.c b/drivers/iio/industrialio-core.c
> index a062cfddc5af..22844b94b0e9 100644
> --- a/drivers/iio/industrialio-core.c
> +++ b/drivers/iio/industrialio-core.c
> @@ -1630,7 +1630,7 @@ static const struct file_operations iio_buffer_fileops = {
> .owner = THIS_MODULE,
> .llseek = noop_llseek,
> .unlocked_ioctl = iio_ioctl,
> - .compat_ioctl = iio_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static int iio_check_unique_scan_index(struct iio_dev *indio_dev)
> diff --git a/drivers/infiniband/core/uverbs_main.c b/drivers/infiniband/core/uverbs_main.c
> index 823beca448e1..f4755c1c9cfa 100644
> --- a/drivers/infiniband/core/uverbs_main.c
> +++ b/drivers/infiniband/core/uverbs_main.c
> @@ -930,7 +930,7 @@ static const struct file_operations uverbs_fops = {
> .release = ib_uverbs_close,
> .llseek = no_llseek,
> .unlocked_ioctl = ib_uverbs_ioctl,
> - .compat_ioctl = ib_uverbs_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static const struct file_operations uverbs_mmap_fops = {
> @@ -941,7 +941,7 @@ static const struct file_operations uverbs_mmap_fops = {
> .release = ib_uverbs_close,
> .llseek = no_llseek,
> .unlocked_ioctl = ib_uverbs_ioctl,
> - .compat_ioctl = ib_uverbs_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static struct ib_client uverbs_client = {
> diff --git a/drivers/media/rc/lirc_dev.c b/drivers/media/rc/lirc_dev.c
> index f862f1b7f996..077209f414ed 100644
> --- a/drivers/media/rc/lirc_dev.c
> +++ b/drivers/media/rc/lirc_dev.c
> @@ -730,9 +730,7 @@ static const struct file_operations lirc_fops = {
> .owner = THIS_MODULE,
> .write = ir_lirc_transmit_ir,
> .unlocked_ioctl = ir_lirc_ioctl,
> -#ifdef CONFIG_COMPAT
> - .compat_ioctl = ir_lirc_ioctl,
> -#endif
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .read = ir_lirc_read,
> .poll = ir_lirc_poll,
> .open = ir_lirc_open,
> diff --git a/drivers/mfd/cros_ec_dev.c b/drivers/mfd/cros_ec_dev.c
> index 999dac752bcc..35a04bcf55da 100644
> --- a/drivers/mfd/cros_ec_dev.c
> +++ b/drivers/mfd/cros_ec_dev.c
> @@ -258,9 +258,7 @@ static const struct file_operations fops = {
> .release = ec_device_release,
> .read = ec_device_read,
> .unlocked_ioctl = ec_device_ioctl,
> -#ifdef CONFIG_COMPAT
> - .compat_ioctl = ec_device_ioctl,
> -#endif
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static void cros_ec_sensors_register(struct cros_ec_dev *ec)
> diff --git a/drivers/misc/vmw_vmci/vmci_host.c b/drivers/misc/vmw_vmci/vmci_host.c
> index 83e0c95d20a4..1308f889e53b 100644
> --- a/drivers/misc/vmw_vmci/vmci_host.c
> +++ b/drivers/misc/vmw_vmci/vmci_host.c
> @@ -983,7 +983,7 @@ static const struct file_operations vmuser_fops = {
> .release = vmci_host_close,
> .poll = vmci_host_poll,
> .unlocked_ioctl = vmci_host_unlocked_ioctl,
> - .compat_ioctl = vmci_host_unlocked_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static struct miscdevice vmci_host_miscdev = {
> diff --git a/drivers/nvdimm/bus.c b/drivers/nvdimm/bus.c
> index 8aae6dcc839f..7449cbc55df7 100644
> --- a/drivers/nvdimm/bus.c
> +++ b/drivers/nvdimm/bus.c
> @@ -1133,7 +1133,7 @@ static const struct file_operations nvdimm_bus_fops = {
> .owner = THIS_MODULE,
> .open = nd_open,
> .unlocked_ioctl = nd_ioctl,
> - .compat_ioctl = nd_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .llseek = noop_llseek,
> };
>
> @@ -1141,7 +1141,7 @@ static const struct file_operations nvdimm_fops = {
> .owner = THIS_MODULE,
> .open = nd_open,
> .unlocked_ioctl = nvdimm_ioctl,
> - .compat_ioctl = nvdimm_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .llseek = noop_llseek,
> };
>
> diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
> index dd8ec1dd9219..2d986f573a29 100644
> --- a/drivers/nvme/host/core.c
> +++ b/drivers/nvme/host/core.c
> @@ -2579,7 +2579,7 @@ static const struct file_operations nvme_dev_fops = {
> .owner = THIS_MODULE,
> .open = nvme_dev_open,
> .unlocked_ioctl = nvme_dev_ioctl,
> - .compat_ioctl = nvme_dev_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static ssize_t nvme_sysfs_reset(struct device *dev,
> diff --git a/drivers/pci/switch/switchtec.c b/drivers/pci/switch/switchtec.c
> index 9940cc70f38b..4296919c784e 100644
> --- a/drivers/pci/switch/switchtec.c
> +++ b/drivers/pci/switch/switchtec.c
> @@ -967,7 +967,7 @@ static const struct file_operations switchtec_fops = {
> .read = switchtec_dev_read,
> .poll = switchtec_dev_poll,
> .unlocked_ioctl = switchtec_dev_ioctl,
> - .compat_ioctl = switchtec_dev_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static void link_event_work(struct work_struct *work)
> diff --git a/drivers/platform/x86/wmi.c b/drivers/platform/x86/wmi.c
> index 04791ea5d97b..e4d0697e07d6 100644
> --- a/drivers/platform/x86/wmi.c
> +++ b/drivers/platform/x86/wmi.c
> @@ -886,7 +886,7 @@ static const struct file_operations wmi_fops = {
> .read = wmi_char_read,
> .open = wmi_char_open,
> .unlocked_ioctl = wmi_ioctl,
> - .compat_ioctl = wmi_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static int wmi_dev_probe(struct device *dev)
> diff --git a/drivers/rpmsg/rpmsg_char.c b/drivers/rpmsg/rpmsg_char.c
> index a76b963a7e50..02aefb2b2d47 100644
> --- a/drivers/rpmsg/rpmsg_char.c
> +++ b/drivers/rpmsg/rpmsg_char.c
> @@ -285,7 +285,7 @@ static const struct file_operations rpmsg_eptdev_fops = {
> .write = rpmsg_eptdev_write,
> .poll = rpmsg_eptdev_poll,
> .unlocked_ioctl = rpmsg_eptdev_ioctl,
> - .compat_ioctl = rpmsg_eptdev_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static ssize_t name_show(struct device *dev, struct device_attribute *attr,
> @@ -446,7 +446,7 @@ static const struct file_operations rpmsg_ctrldev_fops = {
> .open = rpmsg_ctrldev_open,
> .release = rpmsg_ctrldev_release,
> .unlocked_ioctl = rpmsg_ctrldev_ioctl,
> - .compat_ioctl = rpmsg_ctrldev_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static void rpmsg_ctrldev_release_device(struct device *dev)
> diff --git a/drivers/sbus/char/display7seg.c b/drivers/sbus/char/display7seg.c
> index 5c8ed7350a04..064fe7247eb2 100644
> --- a/drivers/sbus/char/display7seg.c
> +++ b/drivers/sbus/char/display7seg.c
> @@ -155,7 +155,7 @@ static long d7s_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
> static const struct file_operations d7s_fops = {
> .owner = THIS_MODULE,
> .unlocked_ioctl = d7s_ioctl,
> - .compat_ioctl = d7s_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .open = d7s_open,
> .release = d7s_release,
> .llseek = noop_llseek,
> diff --git a/drivers/sbus/char/envctrl.c b/drivers/sbus/char/envctrl.c
> index 56e962a01493..a26665ccea56 100644
> --- a/drivers/sbus/char/envctrl.c
> +++ b/drivers/sbus/char/envctrl.c
> @@ -714,9 +714,7 @@ static const struct file_operations envctrl_fops = {
> .owner = THIS_MODULE,
> .read = envctrl_read,
> .unlocked_ioctl = envctrl_ioctl,
> -#ifdef CONFIG_COMPAT
> - .compat_ioctl = envctrl_ioctl,
> -#endif
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .open = envctrl_open,
> .release = envctrl_release,
> .llseek = noop_llseek,
> diff --git a/drivers/scsi/3w-xxxx.c b/drivers/scsi/3w-xxxx.c
> index 471366945bd4..86c9f22a152f 100644
> --- a/drivers/scsi/3w-xxxx.c
> +++ b/drivers/scsi/3w-xxxx.c
> @@ -1047,9 +1047,7 @@ static int tw_chrdev_open(struct inode *inode, struct file *file)
> static const struct file_operations tw_fops = {
> .owner = THIS_MODULE,
> .unlocked_ioctl = tw_chrdev_ioctl,
> -#ifdef CONFIG_COMPAT
> - .compat_ioctl = tw_chrdev_ioctl,
> -#endif
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .open = tw_chrdev_open,
> .release = NULL,
> .llseek = noop_llseek,
> diff --git a/drivers/scsi/cxlflash/main.c b/drivers/scsi/cxlflash/main.c
> index 6637116529aa..d968efeb50e8 100644
> --- a/drivers/scsi/cxlflash/main.c
> +++ b/drivers/scsi/cxlflash/main.c
> @@ -3596,7 +3596,7 @@ static const struct file_operations cxlflash_chr_fops = {
> .owner = THIS_MODULE,
> .open = cxlflash_chr_open,
> .unlocked_ioctl = cxlflash_chr_ioctl,
> - .compat_ioctl = cxlflash_chr_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> /**
> diff --git a/drivers/scsi/esas2r/esas2r_main.c b/drivers/scsi/esas2r/esas2r_main.c
> index c07118617d89..95142292e702 100644
> --- a/drivers/scsi/esas2r/esas2r_main.c
> +++ b/drivers/scsi/esas2r/esas2r_main.c
> @@ -614,7 +614,7 @@ static int __init esas2r_init(void)
>
> /* Handle ioctl calls to "/proc/scsi/esas2r/ATTOnode" */
> static const struct file_operations esas2r_proc_fops = {
> - .compat_ioctl = esas2r_proc_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .unlocked_ioctl = esas2r_proc_ioctl,
> };
>
> diff --git a/drivers/scsi/pmcraid.c b/drivers/scsi/pmcraid.c
> index 4e86994e10e8..8a8c73d3bdad 100644
> --- a/drivers/scsi/pmcraid.c
> +++ b/drivers/scsi/pmcraid.c
> @@ -3999,9 +3999,7 @@ static const struct file_operations pmcraid_fops = {
> .open = pmcraid_chr_open,
> .fasync = pmcraid_chr_fasync,
> .unlocked_ioctl = pmcraid_chr_ioctl,
> -#ifdef CONFIG_COMPAT
> - .compat_ioctl = pmcraid_chr_ioctl,
> -#endif
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .llseek = noop_llseek,
> };
>
> diff --git a/drivers/staging/android/ion/ion.c b/drivers/staging/android/ion/ion.c
> index 99073325b0c0..ef727c235392 100644
> --- a/drivers/staging/android/ion/ion.c
> +++ b/drivers/staging/android/ion/ion.c
> @@ -484,9 +484,7 @@ int ion_query_heaps(struct ion_heap_query *query)
> static const struct file_operations ion_fops = {
> .owner = THIS_MODULE,
> .unlocked_ioctl = ion_ioctl,
> -#ifdef CONFIG_COMPAT
> - .compat_ioctl = ion_ioctl,
> -#endif
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static int debug_shrink_set(void *data, u64 val)
> diff --git a/drivers/staging/vme/devices/vme_user.c b/drivers/staging/vme/devices/vme_user.c
> index 6a33aaa1a49f..568700ffd2f2 100644
> --- a/drivers/staging/vme/devices/vme_user.c
> +++ b/drivers/staging/vme/devices/vme_user.c
> @@ -494,7 +494,7 @@ static const struct file_operations vme_user_fops = {
> .write = vme_user_write,
> .llseek = vme_user_llseek,
> .unlocked_ioctl = vme_user_unlocked_ioctl,
> - .compat_ioctl = vme_user_unlocked_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .mmap = vme_user_mmap,
> };
>
> diff --git a/drivers/tee/tee_core.c b/drivers/tee/tee_core.c
> index dd46b758852a..cb79f28be894 100644
> --- a/drivers/tee/tee_core.c
> +++ b/drivers/tee/tee_core.c
> @@ -670,7 +670,7 @@ static const struct file_operations tee_fops = {
> .open = tee_open,
> .release = tee_release,
> .unlocked_ioctl = tee_ioctl,
> - .compat_ioctl = tee_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static void tee_release_device(struct device *dev)
> diff --git a/drivers/usb/class/cdc-wdm.c b/drivers/usb/class/cdc-wdm.c
> index bec581fb7c63..6e4998c8e64f 100644
> --- a/drivers/usb/class/cdc-wdm.c
> +++ b/drivers/usb/class/cdc-wdm.c
> @@ -724,7 +724,7 @@ static const struct file_operations wdm_fops = {
> .release = wdm_release,
> .poll = wdm_poll,
> .unlocked_ioctl = wdm_ioctl,
> - .compat_ioctl = wdm_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .llseek = noop_llseek,
> };
>
> diff --git a/drivers/usb/class/usbtmc.c b/drivers/usb/class/usbtmc.c
> index 83ffa5a14c3d..d5da47c4c462 100644
> --- a/drivers/usb/class/usbtmc.c
> +++ b/drivers/usb/class/usbtmc.c
> @@ -1460,9 +1460,7 @@ static const struct file_operations fops = {
> .open = usbtmc_open,
> .release = usbtmc_release,
> .unlocked_ioctl = usbtmc_ioctl,
> -#ifdef CONFIG_COMPAT
> - .compat_ioctl = usbtmc_ioctl,
> -#endif
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .fasync = usbtmc_fasync,
> .poll = usbtmc_poll,
> .llseek = default_llseek,
> diff --git a/drivers/video/fbdev/ps3fb.c b/drivers/video/fbdev/ps3fb.c
> index 5ed2db39d823..f9f8ffaf1c4a 100644
> --- a/drivers/video/fbdev/ps3fb.c
> +++ b/drivers/video/fbdev/ps3fb.c
> @@ -949,7 +949,7 @@ static struct fb_ops ps3fb_ops = {
> .fb_mmap = ps3fb_mmap,
> .fb_blank = ps3fb_blank,
> .fb_ioctl = ps3fb_ioctl,
> - .fb_compat_ioctl = ps3fb_ioctl
> + .fb_compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static const struct fb_fix_screeninfo ps3fb_fix = {
> diff --git a/drivers/virt/fsl_hypervisor.c b/drivers/virt/fsl_hypervisor.c
> index 8ba726e600e9..406b7e492214 100644
> --- a/drivers/virt/fsl_hypervisor.c
> +++ b/drivers/virt/fsl_hypervisor.c
> @@ -703,7 +703,7 @@ static const struct file_operations fsl_hv_fops = {
> .poll = fsl_hv_poll,
> .read = fsl_hv_read,
> .unlocked_ioctl = fsl_hv_ioctl,
> - .compat_ioctl = fsl_hv_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static struct miscdevice fsl_hv_misc_dev = {
> diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
> index 6601c9aa5e35..2b5a8ad86305 100644
> --- a/fs/btrfs/super.c
> +++ b/fs/btrfs/super.c
> @@ -2352,7 +2352,7 @@ static const struct super_operations btrfs_super_ops = {
> static const struct file_operations btrfs_ctl_fops = {
> .open = btrfs_control_open,
> .unlocked_ioctl = btrfs_control_ioctl,
> - .compat_ioctl = btrfs_control_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .owner = THIS_MODULE,
> .llseek = noop_llseek,
> };
> diff --git a/fs/ceph/dir.c b/fs/ceph/dir.c
> index da73f29d7faa..eb869fe6774d 100644
> --- a/fs/ceph/dir.c
> +++ b/fs/ceph/dir.c
> @@ -1489,7 +1489,7 @@ const struct file_operations ceph_dir_fops = {
> .open = ceph_open,
> .release = ceph_release,
> .unlocked_ioctl = ceph_ioctl,
> - .compat_ioctl = ceph_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .fsync = ceph_fsync,
> .lock = ceph_lock,
> .flock = ceph_flock,
> diff --git a/fs/ceph/file.c b/fs/ceph/file.c
> index 92ab20433682..85094042cfac 100644
> --- a/fs/ceph/file.c
> +++ b/fs/ceph/file.c
> @@ -1842,7 +1842,7 @@ const struct file_operations ceph_file_fops = {
> .splice_read = generic_file_splice_read,
> .splice_write = iter_file_splice_write,
> .unlocked_ioctl = ceph_ioctl,
> - .compat_ioctl = ceph_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .fallocate = ceph_fallocate,
> };
>
> diff --git a/fs/fuse/dev.c b/fs/fuse/dev.c
> index 11ea2c4a38ab..a6d4a24963ed 100644
> --- a/fs/fuse/dev.c
> +++ b/fs/fuse/dev.c
> @@ -2258,7 +2258,7 @@ const struct file_operations fuse_dev_operations = {
> .release = fuse_dev_release,
> .fasync = fuse_dev_fasync,
> .unlocked_ioctl = fuse_dev_ioctl,
> - .compat_ioctl = fuse_dev_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
> EXPORT_SYMBOL_GPL(fuse_dev_operations);
>
> diff --git a/fs/notify/fanotify/fanotify_user.c b/fs/notify/fanotify/fanotify_user.c
> index 69054886915b..fc4193b384cf 100644
> --- a/fs/notify/fanotify/fanotify_user.c
> +++ b/fs/notify/fanotify/fanotify_user.c
> @@ -447,7 +447,7 @@ static const struct file_operations fanotify_fops = {
> .fasync = NULL,
> .release = fanotify_release,
> .unlocked_ioctl = fanotify_ioctl,
> - .compat_ioctl = fanotify_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .llseek = noop_llseek,
> };
>
> diff --git a/fs/userfaultfd.c b/fs/userfaultfd.c
> index bfa0ec69f924..bc9118b58a8a 100644
> --- a/fs/userfaultfd.c
> +++ b/fs/userfaultfd.c
> @@ -1878,7 +1878,7 @@ static const struct file_operations userfaultfd_fops = {
> .poll = userfaultfd_poll,
> .read = userfaultfd_read,
> .unlocked_ioctl = userfaultfd_ioctl,
> - .compat_ioctl = userfaultfd_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .llseek = noop_llseek,
> };
>
> diff --git a/net/rfkill/core.c b/net/rfkill/core.c
> index 1355f5ca8d22..ba68b53f58ab 100644
> --- a/net/rfkill/core.c
> +++ b/net/rfkill/core.c
> @@ -1323,7 +1323,7 @@ static const struct file_operations rfkill_fops = {
> .release = rfkill_fop_release,
> #ifdef CONFIG_RFKILL_INPUT
> .unlocked_ioctl = rfkill_fop_ioctl,
> - .compat_ioctl = rfkill_fop_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> #endif
> .llseek = no_llseek,
> };
> --
> 2.18.0
>
> _______________________________________________
> dri-devel mailing list
> dri-devel@lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/dri-devel
^ permalink raw reply [flat|nested] 141+ messages in thread
* Re: [PATCH v2 05/17] compat_ioctl: move more drivers to generic_compat_ioctl_ptrarg
@ 2018-09-12 15:58 ` Daniel Vetter
0 siblings, 0 replies; 141+ messages in thread
From: Daniel Vetter @ 2018-09-12 15:58 UTC (permalink / raw)
To: Arnd Bergmann
Cc: Al Viro, Linux Fbdev development list, linux-iio, Linux PCI,
linux-remoteproc, linux-nvme, platform-driver-x86, sparclinux,
driverdevel, linux-scsi, linux-nvdimm, linux-rdma, qat-linux,
amd-gfx list, linux-input,
open list:DMA BUFFER SHARING FRAMEWORK,
moderated list:DMA BUFFER SHARING FRAMEWORK, dri-devel,
ceph-devel, Greg Kroah-Hartman, USB list, linux-wireless,
Linux Kernel Mailing List, linux-crypto, netdev, linux-fsdevel,
linuxppc-dev, David S. Miller, linux-btrfs
On Wed, Sep 12, 2018 at 5:08 PM, Arnd Bergmann <arnd@arndb.de> wrote:
> The .ioctl and .compat_ioctl file operations have the same prototype so
> they can both point to the same function, which works great almost all
> the time when all the commands are compatible.
>
> One exception is the s390 architecture, where a compat pointer is only
> 31 bit wide, and converting it into a 64-bit pointer requires calling
> compat_ptr(). Most drivers here will ever run in s390, but since we now
> have a generic helper for it, it's easy enough to use it consistently.
>
> I double-checked all these drivers to ensure that all ioctl arguments
> are used as pointers or are ignored, but are not interpreted as integer
> values.
>
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
At least for the drm and dma-buf bits.
-Daniel
> ---
> drivers/android/binder.c | 2 +-
> drivers/crypto/qat/qat_common/adf_ctl_drv.c | 2 +-
> drivers/dma-buf/dma-buf.c | 4 +---
> drivers/dma-buf/sw_sync.c | 2 +-
> drivers/dma-buf/sync_file.c | 2 +-
> drivers/gpu/drm/amd/amdkfd/kfd_chardev.c | 2 +-
> drivers/hid/hidraw.c | 4 +---
> drivers/iio/industrialio-core.c | 2 +-
> drivers/infiniband/core/uverbs_main.c | 4 ++--
> drivers/media/rc/lirc_dev.c | 4 +---
> drivers/mfd/cros_ec_dev.c | 4 +---
> drivers/misc/vmw_vmci/vmci_host.c | 2 +-
> drivers/nvdimm/bus.c | 4 ++--
> drivers/nvme/host/core.c | 2 +-
> drivers/pci/switch/switchtec.c | 2 +-
> drivers/platform/x86/wmi.c | 2 +-
> drivers/rpmsg/rpmsg_char.c | 4 ++--
> drivers/sbus/char/display7seg.c | 2 +-
> drivers/sbus/char/envctrl.c | 4 +---
> drivers/scsi/3w-xxxx.c | 4 +---
> drivers/scsi/cxlflash/main.c | 2 +-
> drivers/scsi/esas2r/esas2r_main.c | 2 +-
> drivers/scsi/pmcraid.c | 4 +---
> drivers/staging/android/ion/ion.c | 4 +---
> drivers/staging/vme/devices/vme_user.c | 2 +-
> drivers/tee/tee_core.c | 2 +-
> drivers/usb/class/cdc-wdm.c | 2 +-
> drivers/usb/class/usbtmc.c | 4 +---
> drivers/video/fbdev/ps3fb.c | 2 +-
> drivers/virt/fsl_hypervisor.c | 2 +-
> fs/btrfs/super.c | 2 +-
> fs/ceph/dir.c | 2 +-
> fs/ceph/file.c | 2 +-
> fs/fuse/dev.c | 2 +-
> fs/notify/fanotify/fanotify_user.c | 2 +-
> fs/userfaultfd.c | 2 +-
> net/rfkill/core.c | 2 +-
> 37 files changed, 40 insertions(+), 58 deletions(-)
>
> diff --git a/drivers/android/binder.c b/drivers/android/binder.c
> index d58763b6b009..d2464f5759f8 100644
> --- a/drivers/android/binder.c
> +++ b/drivers/android/binder.c
> @@ -5576,7 +5576,7 @@ static const struct file_operations binder_fops = {
> .owner = THIS_MODULE,
> .poll = binder_poll,
> .unlocked_ioctl = binder_ioctl,
> - .compat_ioctl = binder_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .mmap = binder_mmap,
> .open = binder_open,
> .flush = binder_flush,
> diff --git a/drivers/crypto/qat/qat_common/adf_ctl_drv.c b/drivers/crypto/qat/qat_common/adf_ctl_drv.c
> index abc7a7f64d64..8ff77a70addc 100644
> --- a/drivers/crypto/qat/qat_common/adf_ctl_drv.c
> +++ b/drivers/crypto/qat/qat_common/adf_ctl_drv.c
> @@ -68,7 +68,7 @@ static long adf_ctl_ioctl(struct file *fp, unsigned int cmd, unsigned long arg);
> static const struct file_operations adf_ctl_ops = {
> .owner = THIS_MODULE,
> .unlocked_ioctl = adf_ctl_ioctl,
> - .compat_ioctl = adf_ctl_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> struct adf_ctl_drv_info {
> diff --git a/drivers/dma-buf/dma-buf.c b/drivers/dma-buf/dma-buf.c
> index 13884474d158..a6d7dc4cf7e9 100644
> --- a/drivers/dma-buf/dma-buf.c
> +++ b/drivers/dma-buf/dma-buf.c
> @@ -325,9 +325,7 @@ static const struct file_operations dma_buf_fops = {
> .llseek = dma_buf_llseek,
> .poll = dma_buf_poll,
> .unlocked_ioctl = dma_buf_ioctl,
> -#ifdef CONFIG_COMPAT
> - .compat_ioctl = dma_buf_ioctl,
> -#endif
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> /*
> diff --git a/drivers/dma-buf/sw_sync.c b/drivers/dma-buf/sw_sync.c
> index 53c1d6d36a64..bc810506d487 100644
> --- a/drivers/dma-buf/sw_sync.c
> +++ b/drivers/dma-buf/sw_sync.c
> @@ -419,5 +419,5 @@ const struct file_operations sw_sync_debugfs_fops = {
> .open = sw_sync_debugfs_open,
> .release = sw_sync_debugfs_release,
> .unlocked_ioctl = sw_sync_ioctl,
> - .compat_ioctl = sw_sync_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
> diff --git a/drivers/dma-buf/sync_file.c b/drivers/dma-buf/sync_file.c
> index 35dd06479867..1c64ed60c658 100644
> --- a/drivers/dma-buf/sync_file.c
> +++ b/drivers/dma-buf/sync_file.c
> @@ -488,5 +488,5 @@ static const struct file_operations sync_file_fops = {
> .release = sync_file_release,
> .poll = sync_file_poll,
> .unlocked_ioctl = sync_file_ioctl,
> - .compat_ioctl = sync_file_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
> diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
> index 297b36c26a05..1d7b1e3c3ebe 100644
> --- a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
> +++ b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
> @@ -47,7 +47,7 @@ static const char kfd_dev_name[] = "kfd";
> static const struct file_operations kfd_fops = {
> .owner = THIS_MODULE,
> .unlocked_ioctl = kfd_ioctl,
> - .compat_ioctl = kfd_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .open = kfd_open,
> .mmap = kfd_mmap,
> };
> diff --git a/drivers/hid/hidraw.c b/drivers/hid/hidraw.c
> index 4a44e48e08b2..e44b64812850 100644
> --- a/drivers/hid/hidraw.c
> +++ b/drivers/hid/hidraw.c
> @@ -476,9 +476,7 @@ static const struct file_operations hidraw_ops = {
> .release = hidraw_release,
> .unlocked_ioctl = hidraw_ioctl,
> .fasync = hidraw_fasync,
> -#ifdef CONFIG_COMPAT
> - .compat_ioctl = hidraw_ioctl,
> -#endif
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .llseek = noop_llseek,
> };
>
> diff --git a/drivers/iio/industrialio-core.c b/drivers/iio/industrialio-core.c
> index a062cfddc5af..22844b94b0e9 100644
> --- a/drivers/iio/industrialio-core.c
> +++ b/drivers/iio/industrialio-core.c
> @@ -1630,7 +1630,7 @@ static const struct file_operations iio_buffer_fileops = {
> .owner = THIS_MODULE,
> .llseek = noop_llseek,
> .unlocked_ioctl = iio_ioctl,
> - .compat_ioctl = iio_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static int iio_check_unique_scan_index(struct iio_dev *indio_dev)
> diff --git a/drivers/infiniband/core/uverbs_main.c b/drivers/infiniband/core/uverbs_main.c
> index 823beca448e1..f4755c1c9cfa 100644
> --- a/drivers/infiniband/core/uverbs_main.c
> +++ b/drivers/infiniband/core/uverbs_main.c
> @@ -930,7 +930,7 @@ static const struct file_operations uverbs_fops = {
> .release = ib_uverbs_close,
> .llseek = no_llseek,
> .unlocked_ioctl = ib_uverbs_ioctl,
> - .compat_ioctl = ib_uverbs_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static const struct file_operations uverbs_mmap_fops = {
> @@ -941,7 +941,7 @@ static const struct file_operations uverbs_mmap_fops = {
> .release = ib_uverbs_close,
> .llseek = no_llseek,
> .unlocked_ioctl = ib_uverbs_ioctl,
> - .compat_ioctl = ib_uverbs_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static struct ib_client uverbs_client = {
> diff --git a/drivers/media/rc/lirc_dev.c b/drivers/media/rc/lirc_dev.c
> index f862f1b7f996..077209f414ed 100644
> --- a/drivers/media/rc/lirc_dev.c
> +++ b/drivers/media/rc/lirc_dev.c
> @@ -730,9 +730,7 @@ static const struct file_operations lirc_fops = {
> .owner = THIS_MODULE,
> .write = ir_lirc_transmit_ir,
> .unlocked_ioctl = ir_lirc_ioctl,
> -#ifdef CONFIG_COMPAT
> - .compat_ioctl = ir_lirc_ioctl,
> -#endif
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .read = ir_lirc_read,
> .poll = ir_lirc_poll,
> .open = ir_lirc_open,
> diff --git a/drivers/mfd/cros_ec_dev.c b/drivers/mfd/cros_ec_dev.c
> index 999dac752bcc..35a04bcf55da 100644
> --- a/drivers/mfd/cros_ec_dev.c
> +++ b/drivers/mfd/cros_ec_dev.c
> @@ -258,9 +258,7 @@ static const struct file_operations fops = {
> .release = ec_device_release,
> .read = ec_device_read,
> .unlocked_ioctl = ec_device_ioctl,
> -#ifdef CONFIG_COMPAT
> - .compat_ioctl = ec_device_ioctl,
> -#endif
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static void cros_ec_sensors_register(struct cros_ec_dev *ec)
> diff --git a/drivers/misc/vmw_vmci/vmci_host.c b/drivers/misc/vmw_vmci/vmci_host.c
> index 83e0c95d20a4..1308f889e53b 100644
> --- a/drivers/misc/vmw_vmci/vmci_host.c
> +++ b/drivers/misc/vmw_vmci/vmci_host.c
> @@ -983,7 +983,7 @@ static const struct file_operations vmuser_fops = {
> .release = vmci_host_close,
> .poll = vmci_host_poll,
> .unlocked_ioctl = vmci_host_unlocked_ioctl,
> - .compat_ioctl = vmci_host_unlocked_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static struct miscdevice vmci_host_miscdev = {
> diff --git a/drivers/nvdimm/bus.c b/drivers/nvdimm/bus.c
> index 8aae6dcc839f..7449cbc55df7 100644
> --- a/drivers/nvdimm/bus.c
> +++ b/drivers/nvdimm/bus.c
> @@ -1133,7 +1133,7 @@ static const struct file_operations nvdimm_bus_fops = {
> .owner = THIS_MODULE,
> .open = nd_open,
> .unlocked_ioctl = nd_ioctl,
> - .compat_ioctl = nd_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .llseek = noop_llseek,
> };
>
> @@ -1141,7 +1141,7 @@ static const struct file_operations nvdimm_fops = {
> .owner = THIS_MODULE,
> .open = nd_open,
> .unlocked_ioctl = nvdimm_ioctl,
> - .compat_ioctl = nvdimm_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .llseek = noop_llseek,
> };
>
> diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
> index dd8ec1dd9219..2d986f573a29 100644
> --- a/drivers/nvme/host/core.c
> +++ b/drivers/nvme/host/core.c
> @@ -2579,7 +2579,7 @@ static const struct file_operations nvme_dev_fops = {
> .owner = THIS_MODULE,
> .open = nvme_dev_open,
> .unlocked_ioctl = nvme_dev_ioctl,
> - .compat_ioctl = nvme_dev_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static ssize_t nvme_sysfs_reset(struct device *dev,
> diff --git a/drivers/pci/switch/switchtec.c b/drivers/pci/switch/switchtec.c
> index 9940cc70f38b..4296919c784e 100644
> --- a/drivers/pci/switch/switchtec.c
> +++ b/drivers/pci/switch/switchtec.c
> @@ -967,7 +967,7 @@ static const struct file_operations switchtec_fops = {
> .read = switchtec_dev_read,
> .poll = switchtec_dev_poll,
> .unlocked_ioctl = switchtec_dev_ioctl,
> - .compat_ioctl = switchtec_dev_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static void link_event_work(struct work_struct *work)
> diff --git a/drivers/platform/x86/wmi.c b/drivers/platform/x86/wmi.c
> index 04791ea5d97b..e4d0697e07d6 100644
> --- a/drivers/platform/x86/wmi.c
> +++ b/drivers/platform/x86/wmi.c
> @@ -886,7 +886,7 @@ static const struct file_operations wmi_fops = {
> .read = wmi_char_read,
> .open = wmi_char_open,
> .unlocked_ioctl = wmi_ioctl,
> - .compat_ioctl = wmi_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static int wmi_dev_probe(struct device *dev)
> diff --git a/drivers/rpmsg/rpmsg_char.c b/drivers/rpmsg/rpmsg_char.c
> index a76b963a7e50..02aefb2b2d47 100644
> --- a/drivers/rpmsg/rpmsg_char.c
> +++ b/drivers/rpmsg/rpmsg_char.c
> @@ -285,7 +285,7 @@ static const struct file_operations rpmsg_eptdev_fops = {
> .write = rpmsg_eptdev_write,
> .poll = rpmsg_eptdev_poll,
> .unlocked_ioctl = rpmsg_eptdev_ioctl,
> - .compat_ioctl = rpmsg_eptdev_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static ssize_t name_show(struct device *dev, struct device_attribute *attr,
> @@ -446,7 +446,7 @@ static const struct file_operations rpmsg_ctrldev_fops = {
> .open = rpmsg_ctrldev_open,
> .release = rpmsg_ctrldev_release,
> .unlocked_ioctl = rpmsg_ctrldev_ioctl,
> - .compat_ioctl = rpmsg_ctrldev_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static void rpmsg_ctrldev_release_device(struct device *dev)
> diff --git a/drivers/sbus/char/display7seg.c b/drivers/sbus/char/display7seg.c
> index 5c8ed7350a04..064fe7247eb2 100644
> --- a/drivers/sbus/char/display7seg.c
> +++ b/drivers/sbus/char/display7seg.c
> @@ -155,7 +155,7 @@ static long d7s_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
> static const struct file_operations d7s_fops = {
> .owner = THIS_MODULE,
> .unlocked_ioctl = d7s_ioctl,
> - .compat_ioctl = d7s_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .open = d7s_open,
> .release = d7s_release,
> .llseek = noop_llseek,
> diff --git a/drivers/sbus/char/envctrl.c b/drivers/sbus/char/envctrl.c
> index 56e962a01493..a26665ccea56 100644
> --- a/drivers/sbus/char/envctrl.c
> +++ b/drivers/sbus/char/envctrl.c
> @@ -714,9 +714,7 @@ static const struct file_operations envctrl_fops = {
> .owner = THIS_MODULE,
> .read = envctrl_read,
> .unlocked_ioctl = envctrl_ioctl,
> -#ifdef CONFIG_COMPAT
> - .compat_ioctl = envctrl_ioctl,
> -#endif
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .open = envctrl_open,
> .release = envctrl_release,
> .llseek = noop_llseek,
> diff --git a/drivers/scsi/3w-xxxx.c b/drivers/scsi/3w-xxxx.c
> index 471366945bd4..86c9f22a152f 100644
> --- a/drivers/scsi/3w-xxxx.c
> +++ b/drivers/scsi/3w-xxxx.c
> @@ -1047,9 +1047,7 @@ static int tw_chrdev_open(struct inode *inode, struct file *file)
> static const struct file_operations tw_fops = {
> .owner = THIS_MODULE,
> .unlocked_ioctl = tw_chrdev_ioctl,
> -#ifdef CONFIG_COMPAT
> - .compat_ioctl = tw_chrdev_ioctl,
> -#endif
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .open = tw_chrdev_open,
> .release = NULL,
> .llseek = noop_llseek,
> diff --git a/drivers/scsi/cxlflash/main.c b/drivers/scsi/cxlflash/main.c
> index 6637116529aa..d968efeb50e8 100644
> --- a/drivers/scsi/cxlflash/main.c
> +++ b/drivers/scsi/cxlflash/main.c
> @@ -3596,7 +3596,7 @@ static const struct file_operations cxlflash_chr_fops = {
> .owner = THIS_MODULE,
> .open = cxlflash_chr_open,
> .unlocked_ioctl = cxlflash_chr_ioctl,
> - .compat_ioctl = cxlflash_chr_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> /**
> diff --git a/drivers/scsi/esas2r/esas2r_main.c b/drivers/scsi/esas2r/esas2r_main.c
> index c07118617d89..95142292e702 100644
> --- a/drivers/scsi/esas2r/esas2r_main.c
> +++ b/drivers/scsi/esas2r/esas2r_main.c
> @@ -614,7 +614,7 @@ static int __init esas2r_init(void)
>
> /* Handle ioctl calls to "/proc/scsi/esas2r/ATTOnode" */
> static const struct file_operations esas2r_proc_fops = {
> - .compat_ioctl = esas2r_proc_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .unlocked_ioctl = esas2r_proc_ioctl,
> };
>
> diff --git a/drivers/scsi/pmcraid.c b/drivers/scsi/pmcraid.c
> index 4e86994e10e8..8a8c73d3bdad 100644
> --- a/drivers/scsi/pmcraid.c
> +++ b/drivers/scsi/pmcraid.c
> @@ -3999,9 +3999,7 @@ static const struct file_operations pmcraid_fops = {
> .open = pmcraid_chr_open,
> .fasync = pmcraid_chr_fasync,
> .unlocked_ioctl = pmcraid_chr_ioctl,
> -#ifdef CONFIG_COMPAT
> - .compat_ioctl = pmcraid_chr_ioctl,
> -#endif
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .llseek = noop_llseek,
> };
>
> diff --git a/drivers/staging/android/ion/ion.c b/drivers/staging/android/ion/ion.c
> index 99073325b0c0..ef727c235392 100644
> --- a/drivers/staging/android/ion/ion.c
> +++ b/drivers/staging/android/ion/ion.c
> @@ -484,9 +484,7 @@ int ion_query_heaps(struct ion_heap_query *query)
> static const struct file_operations ion_fops = {
> .owner = THIS_MODULE,
> .unlocked_ioctl = ion_ioctl,
> -#ifdef CONFIG_COMPAT
> - .compat_ioctl = ion_ioctl,
> -#endif
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static int debug_shrink_set(void *data, u64 val)
> diff --git a/drivers/staging/vme/devices/vme_user.c b/drivers/staging/vme/devices/vme_user.c
> index 6a33aaa1a49f..568700ffd2f2 100644
> --- a/drivers/staging/vme/devices/vme_user.c
> +++ b/drivers/staging/vme/devices/vme_user.c
> @@ -494,7 +494,7 @@ static const struct file_operations vme_user_fops = {
> .write = vme_user_write,
> .llseek = vme_user_llseek,
> .unlocked_ioctl = vme_user_unlocked_ioctl,
> - .compat_ioctl = vme_user_unlocked_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .mmap = vme_user_mmap,
> };
>
> diff --git a/drivers/tee/tee_core.c b/drivers/tee/tee_core.c
> index dd46b758852a..cb79f28be894 100644
> --- a/drivers/tee/tee_core.c
> +++ b/drivers/tee/tee_core.c
> @@ -670,7 +670,7 @@ static const struct file_operations tee_fops = {
> .open = tee_open,
> .release = tee_release,
> .unlocked_ioctl = tee_ioctl,
> - .compat_ioctl = tee_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static void tee_release_device(struct device *dev)
> diff --git a/drivers/usb/class/cdc-wdm.c b/drivers/usb/class/cdc-wdm.c
> index bec581fb7c63..6e4998c8e64f 100644
> --- a/drivers/usb/class/cdc-wdm.c
> +++ b/drivers/usb/class/cdc-wdm.c
> @@ -724,7 +724,7 @@ static const struct file_operations wdm_fops = {
> .release = wdm_release,
> .poll = wdm_poll,
> .unlocked_ioctl = wdm_ioctl,
> - .compat_ioctl = wdm_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .llseek = noop_llseek,
> };
>
> diff --git a/drivers/usb/class/usbtmc.c b/drivers/usb/class/usbtmc.c
> index 83ffa5a14c3d..d5da47c4c462 100644
> --- a/drivers/usb/class/usbtmc.c
> +++ b/drivers/usb/class/usbtmc.c
> @@ -1460,9 +1460,7 @@ static const struct file_operations fops = {
> .open = usbtmc_open,
> .release = usbtmc_release,
> .unlocked_ioctl = usbtmc_ioctl,
> -#ifdef CONFIG_COMPAT
> - .compat_ioctl = usbtmc_ioctl,
> -#endif
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .fasync = usbtmc_fasync,
> .poll = usbtmc_poll,
> .llseek = default_llseek,
> diff --git a/drivers/video/fbdev/ps3fb.c b/drivers/video/fbdev/ps3fb.c
> index 5ed2db39d823..f9f8ffaf1c4a 100644
> --- a/drivers/video/fbdev/ps3fb.c
> +++ b/drivers/video/fbdev/ps3fb.c
> @@ -949,7 +949,7 @@ static struct fb_ops ps3fb_ops = {
> .fb_mmap = ps3fb_mmap,
> .fb_blank = ps3fb_blank,
> .fb_ioctl = ps3fb_ioctl,
> - .fb_compat_ioctl = ps3fb_ioctl
> + .fb_compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static const struct fb_fix_screeninfo ps3fb_fix = {
> diff --git a/drivers/virt/fsl_hypervisor.c b/drivers/virt/fsl_hypervisor.c
> index 8ba726e600e9..406b7e492214 100644
> --- a/drivers/virt/fsl_hypervisor.c
> +++ b/drivers/virt/fsl_hypervisor.c
> @@ -703,7 +703,7 @@ static const struct file_operations fsl_hv_fops = {
> .poll = fsl_hv_poll,
> .read = fsl_hv_read,
> .unlocked_ioctl = fsl_hv_ioctl,
> - .compat_ioctl = fsl_hv_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static struct miscdevice fsl_hv_misc_dev = {
> diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
> index 6601c9aa5e35..2b5a8ad86305 100644
> --- a/fs/btrfs/super.c
> +++ b/fs/btrfs/super.c
> @@ -2352,7 +2352,7 @@ static const struct super_operations btrfs_super_ops = {
> static const struct file_operations btrfs_ctl_fops = {
> .open = btrfs_control_open,
> .unlocked_ioctl = btrfs_control_ioctl,
> - .compat_ioctl = btrfs_control_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .owner = THIS_MODULE,
> .llseek = noop_llseek,
> };
> diff --git a/fs/ceph/dir.c b/fs/ceph/dir.c
> index da73f29d7faa..eb869fe6774d 100644
> --- a/fs/ceph/dir.c
> +++ b/fs/ceph/dir.c
> @@ -1489,7 +1489,7 @@ const struct file_operations ceph_dir_fops = {
> .open = ceph_open,
> .release = ceph_release,
> .unlocked_ioctl = ceph_ioctl,
> - .compat_ioctl = ceph_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .fsync = ceph_fsync,
> .lock = ceph_lock,
> .flock = ceph_flock,
> diff --git a/fs/ceph/file.c b/fs/ceph/file.c
> index 92ab20433682..85094042cfac 100644
> --- a/fs/ceph/file.c
> +++ b/fs/ceph/file.c
> @@ -1842,7 +1842,7 @@ const struct file_operations ceph_file_fops = {
> .splice_read = generic_file_splice_read,
> .splice_write = iter_file_splice_write,
> .unlocked_ioctl = ceph_ioctl,
> - .compat_ioctl = ceph_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .fallocate = ceph_fallocate,
> };
>
> diff --git a/fs/fuse/dev.c b/fs/fuse/dev.c
> index 11ea2c4a38ab..a6d4a24963ed 100644
> --- a/fs/fuse/dev.c
> +++ b/fs/fuse/dev.c
> @@ -2258,7 +2258,7 @@ const struct file_operations fuse_dev_operations = {
> .release = fuse_dev_release,
> .fasync = fuse_dev_fasync,
> .unlocked_ioctl = fuse_dev_ioctl,
> - .compat_ioctl = fuse_dev_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
> EXPORT_SYMBOL_GPL(fuse_dev_operations);
>
> diff --git a/fs/notify/fanotify/fanotify_user.c b/fs/notify/fanotify/fanotify_user.c
> index 69054886915b..fc4193b384cf 100644
> --- a/fs/notify/fanotify/fanotify_user.c
> +++ b/fs/notify/fanotify/fanotify_user.c
> @@ -447,7 +447,7 @@ static const struct file_operations fanotify_fops = {
> .fasync = NULL,
> .release = fanotify_release,
> .unlocked_ioctl = fanotify_ioctl,
> - .compat_ioctl = fanotify_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .llseek = noop_llseek,
> };
>
> diff --git a/fs/userfaultfd.c b/fs/userfaultfd.c
> index bfa0ec69f924..bc9118b58a8a 100644
> --- a/fs/userfaultfd.c
> +++ b/fs/userfaultfd.c
> @@ -1878,7 +1878,7 @@ static const struct file_operations userfaultfd_fops = {
> .poll = userfaultfd_poll,
> .read = userfaultfd_read,
> .unlocked_ioctl = userfaultfd_ioctl,
> - .compat_ioctl = userfaultfd_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .llseek = noop_llseek,
> };
>
> diff --git a/net/rfkill/core.c b/net/rfkill/core.c
> index 1355f5ca8d22..ba68b53f58ab 100644
> --- a/net/rfkill/core.c
> +++ b/net/rfkill/core.c
> @@ -1323,7 +1323,7 @@ static const struct file_operations rfkill_fops = {
> .release = rfkill_fop_release,
> #ifdef CONFIG_RFKILL_INPUT
> .unlocked_ioctl = rfkill_fop_ioctl,
> - .compat_ioctl = rfkill_fop_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> #endif
> .llseek = no_llseek,
> };
> --
> 2.18.0
>
> _______________________________________________
> dri-devel mailing list
> dri-devel@lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/dri-devel
--
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch
^ permalink raw reply [flat|nested] 141+ messages in thread
* Re: [PATCH v2 05/17] compat_ioctl: move more drivers to generic_compat_ioctl_ptrarg
@ 2018-09-12 15:58 ` Daniel Vetter
0 siblings, 0 replies; 141+ messages in thread
From: Daniel Vetter @ 2018-09-12 15:58 UTC (permalink / raw)
To: Arnd Bergmann
Cc: Linux Fbdev development list, linux-iio-u79uwXL29TY76Z2rM5mHXA,
Linux PCI, linux-remoteproc-u79uwXL29TY76Z2rM5mHXA, dri-devel,
platform-driver-x86-u79uwXL29TY76Z2rM5mHXA,
sparclinux-u79uwXL29TY76Z2rM5mHXA, driverdevel,
linux-scsi-u79uwXL29TY76Z2rM5mHXA,
linux-nvdimm-hn68Rpc1hR1g9hUCZPvPmw,
linux-rdma-u79uwXL29TY76Z2rM5mHXA,
qat-linux-ral2JQCrhuEAvxtiuMwx3w, amd-gfx list,
linux-input-u79uwXL29TY76Z2rM5mHXA,
open list:DMA BUFFER SHARING FRAMEWORK,
moderated list:DMA BUFFER SHARING FRAMEWORK,
linux-nvme-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
ceph-devel-u79uwXL29TY76Z2rM5mHXA, Greg Kroah-Hartman, USB list,
linux-wireless-u79uwXL29TY76Z2rM5mHXA, Linux Kernel Mailing List
On Wed, Sep 12, 2018 at 5:08 PM, Arnd Bergmann <arnd@arndb.de> wrote:
> The .ioctl and .compat_ioctl file operations have the same prototype so
> they can both point to the same function, which works great almost all
> the time when all the commands are compatible.
>
> One exception is the s390 architecture, where a compat pointer is only
> 31 bit wide, and converting it into a 64-bit pointer requires calling
> compat_ptr(). Most drivers here will ever run in s390, but since we now
> have a generic helper for it, it's easy enough to use it consistently.
>
> I double-checked all these drivers to ensure that all ioctl arguments
> are used as pointers or are ignored, but are not interpreted as integer
> values.
>
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
At least for the drm and dma-buf bits.
-Daniel
> ---
> drivers/android/binder.c | 2 +-
> drivers/crypto/qat/qat_common/adf_ctl_drv.c | 2 +-
> drivers/dma-buf/dma-buf.c | 4 +---
> drivers/dma-buf/sw_sync.c | 2 +-
> drivers/dma-buf/sync_file.c | 2 +-
> drivers/gpu/drm/amd/amdkfd/kfd_chardev.c | 2 +-
> drivers/hid/hidraw.c | 4 +---
> drivers/iio/industrialio-core.c | 2 +-
> drivers/infiniband/core/uverbs_main.c | 4 ++--
> drivers/media/rc/lirc_dev.c | 4 +---
> drivers/mfd/cros_ec_dev.c | 4 +---
> drivers/misc/vmw_vmci/vmci_host.c | 2 +-
> drivers/nvdimm/bus.c | 4 ++--
> drivers/nvme/host/core.c | 2 +-
> drivers/pci/switch/switchtec.c | 2 +-
> drivers/platform/x86/wmi.c | 2 +-
> drivers/rpmsg/rpmsg_char.c | 4 ++--
> drivers/sbus/char/display7seg.c | 2 +-
> drivers/sbus/char/envctrl.c | 4 +---
> drivers/scsi/3w-xxxx.c | 4 +---
> drivers/scsi/cxlflash/main.c | 2 +-
> drivers/scsi/esas2r/esas2r_main.c | 2 +-
> drivers/scsi/pmcraid.c | 4 +---
> drivers/staging/android/ion/ion.c | 4 +---
> drivers/staging/vme/devices/vme_user.c | 2 +-
> drivers/tee/tee_core.c | 2 +-
> drivers/usb/class/cdc-wdm.c | 2 +-
> drivers/usb/class/usbtmc.c | 4 +---
> drivers/video/fbdev/ps3fb.c | 2 +-
> drivers/virt/fsl_hypervisor.c | 2 +-
> fs/btrfs/super.c | 2 +-
> fs/ceph/dir.c | 2 +-
> fs/ceph/file.c | 2 +-
> fs/fuse/dev.c | 2 +-
> fs/notify/fanotify/fanotify_user.c | 2 +-
> fs/userfaultfd.c | 2 +-
> net/rfkill/core.c | 2 +-
> 37 files changed, 40 insertions(+), 58 deletions(-)
>
> diff --git a/drivers/android/binder.c b/drivers/android/binder.c
> index d58763b6b009..d2464f5759f8 100644
> --- a/drivers/android/binder.c
> +++ b/drivers/android/binder.c
> @@ -5576,7 +5576,7 @@ static const struct file_operations binder_fops = {
> .owner = THIS_MODULE,
> .poll = binder_poll,
> .unlocked_ioctl = binder_ioctl,
> - .compat_ioctl = binder_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .mmap = binder_mmap,
> .open = binder_open,
> .flush = binder_flush,
> diff --git a/drivers/crypto/qat/qat_common/adf_ctl_drv.c b/drivers/crypto/qat/qat_common/adf_ctl_drv.c
> index abc7a7f64d64..8ff77a70addc 100644
> --- a/drivers/crypto/qat/qat_common/adf_ctl_drv.c
> +++ b/drivers/crypto/qat/qat_common/adf_ctl_drv.c
> @@ -68,7 +68,7 @@ static long adf_ctl_ioctl(struct file *fp, unsigned int cmd, unsigned long arg);
> static const struct file_operations adf_ctl_ops = {
> .owner = THIS_MODULE,
> .unlocked_ioctl = adf_ctl_ioctl,
> - .compat_ioctl = adf_ctl_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> struct adf_ctl_drv_info {
> diff --git a/drivers/dma-buf/dma-buf.c b/drivers/dma-buf/dma-buf.c
> index 13884474d158..a6d7dc4cf7e9 100644
> --- a/drivers/dma-buf/dma-buf.c
> +++ b/drivers/dma-buf/dma-buf.c
> @@ -325,9 +325,7 @@ static const struct file_operations dma_buf_fops = {
> .llseek = dma_buf_llseek,
> .poll = dma_buf_poll,
> .unlocked_ioctl = dma_buf_ioctl,
> -#ifdef CONFIG_COMPAT
> - .compat_ioctl = dma_buf_ioctl,
> -#endif
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> /*
> diff --git a/drivers/dma-buf/sw_sync.c b/drivers/dma-buf/sw_sync.c
> index 53c1d6d36a64..bc810506d487 100644
> --- a/drivers/dma-buf/sw_sync.c
> +++ b/drivers/dma-buf/sw_sync.c
> @@ -419,5 +419,5 @@ const struct file_operations sw_sync_debugfs_fops = {
> .open = sw_sync_debugfs_open,
> .release = sw_sync_debugfs_release,
> .unlocked_ioctl = sw_sync_ioctl,
> - .compat_ioctl = sw_sync_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
> diff --git a/drivers/dma-buf/sync_file.c b/drivers/dma-buf/sync_file.c
> index 35dd06479867..1c64ed60c658 100644
> --- a/drivers/dma-buf/sync_file.c
> +++ b/drivers/dma-buf/sync_file.c
> @@ -488,5 +488,5 @@ static const struct file_operations sync_file_fops = {
> .release = sync_file_release,
> .poll = sync_file_poll,
> .unlocked_ioctl = sync_file_ioctl,
> - .compat_ioctl = sync_file_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
> diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
> index 297b36c26a05..1d7b1e3c3ebe 100644
> --- a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
> +++ b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
> @@ -47,7 +47,7 @@ static const char kfd_dev_name[] = "kfd";
> static const struct file_operations kfd_fops = {
> .owner = THIS_MODULE,
> .unlocked_ioctl = kfd_ioctl,
> - .compat_ioctl = kfd_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .open = kfd_open,
> .mmap = kfd_mmap,
> };
> diff --git a/drivers/hid/hidraw.c b/drivers/hid/hidraw.c
> index 4a44e48e08b2..e44b64812850 100644
> --- a/drivers/hid/hidraw.c
> +++ b/drivers/hid/hidraw.c
> @@ -476,9 +476,7 @@ static const struct file_operations hidraw_ops = {
> .release = hidraw_release,
> .unlocked_ioctl = hidraw_ioctl,
> .fasync = hidraw_fasync,
> -#ifdef CONFIG_COMPAT
> - .compat_ioctl = hidraw_ioctl,
> -#endif
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .llseek = noop_llseek,
> };
>
> diff --git a/drivers/iio/industrialio-core.c b/drivers/iio/industrialio-core.c
> index a062cfddc5af..22844b94b0e9 100644
> --- a/drivers/iio/industrialio-core.c
> +++ b/drivers/iio/industrialio-core.c
> @@ -1630,7 +1630,7 @@ static const struct file_operations iio_buffer_fileops = {
> .owner = THIS_MODULE,
> .llseek = noop_llseek,
> .unlocked_ioctl = iio_ioctl,
> - .compat_ioctl = iio_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static int iio_check_unique_scan_index(struct iio_dev *indio_dev)
> diff --git a/drivers/infiniband/core/uverbs_main.c b/drivers/infiniband/core/uverbs_main.c
> index 823beca448e1..f4755c1c9cfa 100644
> --- a/drivers/infiniband/core/uverbs_main.c
> +++ b/drivers/infiniband/core/uverbs_main.c
> @@ -930,7 +930,7 @@ static const struct file_operations uverbs_fops = {
> .release = ib_uverbs_close,
> .llseek = no_llseek,
> .unlocked_ioctl = ib_uverbs_ioctl,
> - .compat_ioctl = ib_uverbs_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static const struct file_operations uverbs_mmap_fops = {
> @@ -941,7 +941,7 @@ static const struct file_operations uverbs_mmap_fops = {
> .release = ib_uverbs_close,
> .llseek = no_llseek,
> .unlocked_ioctl = ib_uverbs_ioctl,
> - .compat_ioctl = ib_uverbs_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static struct ib_client uverbs_client = {
> diff --git a/drivers/media/rc/lirc_dev.c b/drivers/media/rc/lirc_dev.c
> index f862f1b7f996..077209f414ed 100644
> --- a/drivers/media/rc/lirc_dev.c
> +++ b/drivers/media/rc/lirc_dev.c
> @@ -730,9 +730,7 @@ static const struct file_operations lirc_fops = {
> .owner = THIS_MODULE,
> .write = ir_lirc_transmit_ir,
> .unlocked_ioctl = ir_lirc_ioctl,
> -#ifdef CONFIG_COMPAT
> - .compat_ioctl = ir_lirc_ioctl,
> -#endif
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .read = ir_lirc_read,
> .poll = ir_lirc_poll,
> .open = ir_lirc_open,
> diff --git a/drivers/mfd/cros_ec_dev.c b/drivers/mfd/cros_ec_dev.c
> index 999dac752bcc..35a04bcf55da 100644
> --- a/drivers/mfd/cros_ec_dev.c
> +++ b/drivers/mfd/cros_ec_dev.c
> @@ -258,9 +258,7 @@ static const struct file_operations fops = {
> .release = ec_device_release,
> .read = ec_device_read,
> .unlocked_ioctl = ec_device_ioctl,
> -#ifdef CONFIG_COMPAT
> - .compat_ioctl = ec_device_ioctl,
> -#endif
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static void cros_ec_sensors_register(struct cros_ec_dev *ec)
> diff --git a/drivers/misc/vmw_vmci/vmci_host.c b/drivers/misc/vmw_vmci/vmci_host.c
> index 83e0c95d20a4..1308f889e53b 100644
> --- a/drivers/misc/vmw_vmci/vmci_host.c
> +++ b/drivers/misc/vmw_vmci/vmci_host.c
> @@ -983,7 +983,7 @@ static const struct file_operations vmuser_fops = {
> .release = vmci_host_close,
> .poll = vmci_host_poll,
> .unlocked_ioctl = vmci_host_unlocked_ioctl,
> - .compat_ioctl = vmci_host_unlocked_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static struct miscdevice vmci_host_miscdev = {
> diff --git a/drivers/nvdimm/bus.c b/drivers/nvdimm/bus.c
> index 8aae6dcc839f..7449cbc55df7 100644
> --- a/drivers/nvdimm/bus.c
> +++ b/drivers/nvdimm/bus.c
> @@ -1133,7 +1133,7 @@ static const struct file_operations nvdimm_bus_fops = {
> .owner = THIS_MODULE,
> .open = nd_open,
> .unlocked_ioctl = nd_ioctl,
> - .compat_ioctl = nd_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .llseek = noop_llseek,
> };
>
> @@ -1141,7 +1141,7 @@ static const struct file_operations nvdimm_fops = {
> .owner = THIS_MODULE,
> .open = nd_open,
> .unlocked_ioctl = nvdimm_ioctl,
> - .compat_ioctl = nvdimm_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .llseek = noop_llseek,
> };
>
> diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
> index dd8ec1dd9219..2d986f573a29 100644
> --- a/drivers/nvme/host/core.c
> +++ b/drivers/nvme/host/core.c
> @@ -2579,7 +2579,7 @@ static const struct file_operations nvme_dev_fops = {
> .owner = THIS_MODULE,
> .open = nvme_dev_open,
> .unlocked_ioctl = nvme_dev_ioctl,
> - .compat_ioctl = nvme_dev_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static ssize_t nvme_sysfs_reset(struct device *dev,
> diff --git a/drivers/pci/switch/switchtec.c b/drivers/pci/switch/switchtec.c
> index 9940cc70f38b..4296919c784e 100644
> --- a/drivers/pci/switch/switchtec.c
> +++ b/drivers/pci/switch/switchtec.c
> @@ -967,7 +967,7 @@ static const struct file_operations switchtec_fops = {
> .read = switchtec_dev_read,
> .poll = switchtec_dev_poll,
> .unlocked_ioctl = switchtec_dev_ioctl,
> - .compat_ioctl = switchtec_dev_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static void link_event_work(struct work_struct *work)
> diff --git a/drivers/platform/x86/wmi.c b/drivers/platform/x86/wmi.c
> index 04791ea5d97b..e4d0697e07d6 100644
> --- a/drivers/platform/x86/wmi.c
> +++ b/drivers/platform/x86/wmi.c
> @@ -886,7 +886,7 @@ static const struct file_operations wmi_fops = {
> .read = wmi_char_read,
> .open = wmi_char_open,
> .unlocked_ioctl = wmi_ioctl,
> - .compat_ioctl = wmi_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static int wmi_dev_probe(struct device *dev)
> diff --git a/drivers/rpmsg/rpmsg_char.c b/drivers/rpmsg/rpmsg_char.c
> index a76b963a7e50..02aefb2b2d47 100644
> --- a/drivers/rpmsg/rpmsg_char.c
> +++ b/drivers/rpmsg/rpmsg_char.c
> @@ -285,7 +285,7 @@ static const struct file_operations rpmsg_eptdev_fops = {
> .write = rpmsg_eptdev_write,
> .poll = rpmsg_eptdev_poll,
> .unlocked_ioctl = rpmsg_eptdev_ioctl,
> - .compat_ioctl = rpmsg_eptdev_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static ssize_t name_show(struct device *dev, struct device_attribute *attr,
> @@ -446,7 +446,7 @@ static const struct file_operations rpmsg_ctrldev_fops = {
> .open = rpmsg_ctrldev_open,
> .release = rpmsg_ctrldev_release,
> .unlocked_ioctl = rpmsg_ctrldev_ioctl,
> - .compat_ioctl = rpmsg_ctrldev_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static void rpmsg_ctrldev_release_device(struct device *dev)
> diff --git a/drivers/sbus/char/display7seg.c b/drivers/sbus/char/display7seg.c
> index 5c8ed7350a04..064fe7247eb2 100644
> --- a/drivers/sbus/char/display7seg.c
> +++ b/drivers/sbus/char/display7seg.c
> @@ -155,7 +155,7 @@ static long d7s_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
> static const struct file_operations d7s_fops = {
> .owner = THIS_MODULE,
> .unlocked_ioctl = d7s_ioctl,
> - .compat_ioctl = d7s_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .open = d7s_open,
> .release = d7s_release,
> .llseek = noop_llseek,
> diff --git a/drivers/sbus/char/envctrl.c b/drivers/sbus/char/envctrl.c
> index 56e962a01493..a26665ccea56 100644
> --- a/drivers/sbus/char/envctrl.c
> +++ b/drivers/sbus/char/envctrl.c
> @@ -714,9 +714,7 @@ static const struct file_operations envctrl_fops = {
> .owner = THIS_MODULE,
> .read = envctrl_read,
> .unlocked_ioctl = envctrl_ioctl,
> -#ifdef CONFIG_COMPAT
> - .compat_ioctl = envctrl_ioctl,
> -#endif
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .open = envctrl_open,
> .release = envctrl_release,
> .llseek = noop_llseek,
> diff --git a/drivers/scsi/3w-xxxx.c b/drivers/scsi/3w-xxxx.c
> index 471366945bd4..86c9f22a152f 100644
> --- a/drivers/scsi/3w-xxxx.c
> +++ b/drivers/scsi/3w-xxxx.c
> @@ -1047,9 +1047,7 @@ static int tw_chrdev_open(struct inode *inode, struct file *file)
> static const struct file_operations tw_fops = {
> .owner = THIS_MODULE,
> .unlocked_ioctl = tw_chrdev_ioctl,
> -#ifdef CONFIG_COMPAT
> - .compat_ioctl = tw_chrdev_ioctl,
> -#endif
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .open = tw_chrdev_open,
> .release = NULL,
> .llseek = noop_llseek,
> diff --git a/drivers/scsi/cxlflash/main.c b/drivers/scsi/cxlflash/main.c
> index 6637116529aa..d968efeb50e8 100644
> --- a/drivers/scsi/cxlflash/main.c
> +++ b/drivers/scsi/cxlflash/main.c
> @@ -3596,7 +3596,7 @@ static const struct file_operations cxlflash_chr_fops = {
> .owner = THIS_MODULE,
> .open = cxlflash_chr_open,
> .unlocked_ioctl = cxlflash_chr_ioctl,
> - .compat_ioctl = cxlflash_chr_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> /**
> diff --git a/drivers/scsi/esas2r/esas2r_main.c b/drivers/scsi/esas2r/esas2r_main.c
> index c07118617d89..95142292e702 100644
> --- a/drivers/scsi/esas2r/esas2r_main.c
> +++ b/drivers/scsi/esas2r/esas2r_main.c
> @@ -614,7 +614,7 @@ static int __init esas2r_init(void)
>
> /* Handle ioctl calls to "/proc/scsi/esas2r/ATTOnode" */
> static const struct file_operations esas2r_proc_fops = {
> - .compat_ioctl = esas2r_proc_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .unlocked_ioctl = esas2r_proc_ioctl,
> };
>
> diff --git a/drivers/scsi/pmcraid.c b/drivers/scsi/pmcraid.c
> index 4e86994e10e8..8a8c73d3bdad 100644
> --- a/drivers/scsi/pmcraid.c
> +++ b/drivers/scsi/pmcraid.c
> @@ -3999,9 +3999,7 @@ static const struct file_operations pmcraid_fops = {
> .open = pmcraid_chr_open,
> .fasync = pmcraid_chr_fasync,
> .unlocked_ioctl = pmcraid_chr_ioctl,
> -#ifdef CONFIG_COMPAT
> - .compat_ioctl = pmcraid_chr_ioctl,
> -#endif
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .llseek = noop_llseek,
> };
>
> diff --git a/drivers/staging/android/ion/ion.c b/drivers/staging/android/ion/ion.c
> index 99073325b0c0..ef727c235392 100644
> --- a/drivers/staging/android/ion/ion.c
> +++ b/drivers/staging/android/ion/ion.c
> @@ -484,9 +484,7 @@ int ion_query_heaps(struct ion_heap_query *query)
> static const struct file_operations ion_fops = {
> .owner = THIS_MODULE,
> .unlocked_ioctl = ion_ioctl,
> -#ifdef CONFIG_COMPAT
> - .compat_ioctl = ion_ioctl,
> -#endif
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static int debug_shrink_set(void *data, u64 val)
> diff --git a/drivers/staging/vme/devices/vme_user.c b/drivers/staging/vme/devices/vme_user.c
> index 6a33aaa1a49f..568700ffd2f2 100644
> --- a/drivers/staging/vme/devices/vme_user.c
> +++ b/drivers/staging/vme/devices/vme_user.c
> @@ -494,7 +494,7 @@ static const struct file_operations vme_user_fops = {
> .write = vme_user_write,
> .llseek = vme_user_llseek,
> .unlocked_ioctl = vme_user_unlocked_ioctl,
> - .compat_ioctl = vme_user_unlocked_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .mmap = vme_user_mmap,
> };
>
> diff --git a/drivers/tee/tee_core.c b/drivers/tee/tee_core.c
> index dd46b758852a..cb79f28be894 100644
> --- a/drivers/tee/tee_core.c
> +++ b/drivers/tee/tee_core.c
> @@ -670,7 +670,7 @@ static const struct file_operations tee_fops = {
> .open = tee_open,
> .release = tee_release,
> .unlocked_ioctl = tee_ioctl,
> - .compat_ioctl = tee_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static void tee_release_device(struct device *dev)
> diff --git a/drivers/usb/class/cdc-wdm.c b/drivers/usb/class/cdc-wdm.c
> index bec581fb7c63..6e4998c8e64f 100644
> --- a/drivers/usb/class/cdc-wdm.c
> +++ b/drivers/usb/class/cdc-wdm.c
> @@ -724,7 +724,7 @@ static const struct file_operations wdm_fops = {
> .release = wdm_release,
> .poll = wdm_poll,
> .unlocked_ioctl = wdm_ioctl,
> - .compat_ioctl = wdm_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .llseek = noop_llseek,
> };
>
> diff --git a/drivers/usb/class/usbtmc.c b/drivers/usb/class/usbtmc.c
> index 83ffa5a14c3d..d5da47c4c462 100644
> --- a/drivers/usb/class/usbtmc.c
> +++ b/drivers/usb/class/usbtmc.c
> @@ -1460,9 +1460,7 @@ static const struct file_operations fops = {
> .open = usbtmc_open,
> .release = usbtmc_release,
> .unlocked_ioctl = usbtmc_ioctl,
> -#ifdef CONFIG_COMPAT
> - .compat_ioctl = usbtmc_ioctl,
> -#endif
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .fasync = usbtmc_fasync,
> .poll = usbtmc_poll,
> .llseek = default_llseek,
> diff --git a/drivers/video/fbdev/ps3fb.c b/drivers/video/fbdev/ps3fb.c
> index 5ed2db39d823..f9f8ffaf1c4a 100644
> --- a/drivers/video/fbdev/ps3fb.c
> +++ b/drivers/video/fbdev/ps3fb.c
> @@ -949,7 +949,7 @@ static struct fb_ops ps3fb_ops = {
> .fb_mmap = ps3fb_mmap,
> .fb_blank = ps3fb_blank,
> .fb_ioctl = ps3fb_ioctl,
> - .fb_compat_ioctl = ps3fb_ioctl
> + .fb_compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static const struct fb_fix_screeninfo ps3fb_fix = {
> diff --git a/drivers/virt/fsl_hypervisor.c b/drivers/virt/fsl_hypervisor.c
> index 8ba726e600e9..406b7e492214 100644
> --- a/drivers/virt/fsl_hypervisor.c
> +++ b/drivers/virt/fsl_hypervisor.c
> @@ -703,7 +703,7 @@ static const struct file_operations fsl_hv_fops = {
> .poll = fsl_hv_poll,
> .read = fsl_hv_read,
> .unlocked_ioctl = fsl_hv_ioctl,
> - .compat_ioctl = fsl_hv_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static struct miscdevice fsl_hv_misc_dev = {
> diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
> index 6601c9aa5e35..2b5a8ad86305 100644
> --- a/fs/btrfs/super.c
> +++ b/fs/btrfs/super.c
> @@ -2352,7 +2352,7 @@ static const struct super_operations btrfs_super_ops = {
> static const struct file_operations btrfs_ctl_fops = {
> .open = btrfs_control_open,
> .unlocked_ioctl = btrfs_control_ioctl,
> - .compat_ioctl = btrfs_control_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .owner = THIS_MODULE,
> .llseek = noop_llseek,
> };
> diff --git a/fs/ceph/dir.c b/fs/ceph/dir.c
> index da73f29d7faa..eb869fe6774d 100644
> --- a/fs/ceph/dir.c
> +++ b/fs/ceph/dir.c
> @@ -1489,7 +1489,7 @@ const struct file_operations ceph_dir_fops = {
> .open = ceph_open,
> .release = ceph_release,
> .unlocked_ioctl = ceph_ioctl,
> - .compat_ioctl = ceph_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .fsync = ceph_fsync,
> .lock = ceph_lock,
> .flock = ceph_flock,
> diff --git a/fs/ceph/file.c b/fs/ceph/file.c
> index 92ab20433682..85094042cfac 100644
> --- a/fs/ceph/file.c
> +++ b/fs/ceph/file.c
> @@ -1842,7 +1842,7 @@ const struct file_operations ceph_file_fops = {
> .splice_read = generic_file_splice_read,
> .splice_write = iter_file_splice_write,
> .unlocked_ioctl = ceph_ioctl,
> - .compat_ioctl = ceph_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .fallocate = ceph_fallocate,
> };
>
> diff --git a/fs/fuse/dev.c b/fs/fuse/dev.c
> index 11ea2c4a38ab..a6d4a24963ed 100644
> --- a/fs/fuse/dev.c
> +++ b/fs/fuse/dev.c
> @@ -2258,7 +2258,7 @@ const struct file_operations fuse_dev_operations = {
> .release = fuse_dev_release,
> .fasync = fuse_dev_fasync,
> .unlocked_ioctl = fuse_dev_ioctl,
> - .compat_ioctl = fuse_dev_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
> EXPORT_SYMBOL_GPL(fuse_dev_operations);
>
> diff --git a/fs/notify/fanotify/fanotify_user.c b/fs/notify/fanotify/fanotify_user.c
> index 69054886915b..fc4193b384cf 100644
> --- a/fs/notify/fanotify/fanotify_user.c
> +++ b/fs/notify/fanotify/fanotify_user.c
> @@ -447,7 +447,7 @@ static const struct file_operations fanotify_fops = {
> .fasync = NULL,
> .release = fanotify_release,
> .unlocked_ioctl = fanotify_ioctl,
> - .compat_ioctl = fanotify_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .llseek = noop_llseek,
> };
>
> diff --git a/fs/userfaultfd.c b/fs/userfaultfd.c
> index bfa0ec69f924..bc9118b58a8a 100644
> --- a/fs/userfaultfd.c
> +++ b/fs/userfaultfd.c
> @@ -1878,7 +1878,7 @@ static const struct file_operations userfaultfd_fops = {
> .poll = userfaultfd_poll,
> .read = userfaultfd_read,
> .unlocked_ioctl = userfaultfd_ioctl,
> - .compat_ioctl = userfaultfd_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .llseek = noop_llseek,
> };
>
> diff --git a/net/rfkill/core.c b/net/rfkill/core.c
> index 1355f5ca8d22..ba68b53f58ab 100644
> --- a/net/rfkill/core.c
> +++ b/net/rfkill/core.c
> @@ -1323,7 +1323,7 @@ static const struct file_operations rfkill_fops = {
> .release = rfkill_fop_release,
> #ifdef CONFIG_RFKILL_INPUT
> .unlocked_ioctl = rfkill_fop_ioctl,
> - .compat_ioctl = rfkill_fop_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> #endif
> .llseek = no_llseek,
> };
> --
> 2.18.0
>
> _______________________________________________
> dri-devel mailing list
> dri-devel@lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/dri-devel
--
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch
_______________________________________________
amd-gfx mailing list
amd-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/amd-gfx
^ permalink raw reply [flat|nested] 141+ messages in thread
* Re: [PATCH v2 05/17] compat_ioctl: move more drivers to generic_compat_ioctl_ptrarg
@ 2018-09-12 15:58 ` Daniel Vetter
0 siblings, 0 replies; 141+ messages in thread
From: Daniel Vetter @ 2018-09-12 15:58 UTC (permalink / raw)
To: Arnd Bergmann
Cc: Linux Fbdev development list, linux-iio-u79uwXL29TY76Z2rM5mHXA,
Linux PCI, linux-remoteproc-u79uwXL29TY76Z2rM5mHXA, dri-devel,
platform-driver-x86-u79uwXL29TY76Z2rM5mHXA,
sparclinux-u79uwXL29TY76Z2rM5mHXA, driverdevel,
linux-scsi-u79uwXL29TY76Z2rM5mHXA,
linux-nvdimm-hn68Rpc1hR1g9hUCZPvPmw,
linux-rdma-u79uwXL29TY76Z2rM5mHXA,
qat-linux-ral2JQCrhuEAvxtiuMwx3w, amd-gfx list,
linux-input-u79uwXL29TY76Z2rM5mHXA,
open list:DMA BUFFER SHARING FRAMEWORK,
moderated list:DMA BUFFER SHARING FRAMEWORK,
linux-nvme-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
ceph-devel-u79uwXL29TY76Z2rM5mHXA, Greg Kroah-Hartman, USB list,
linux-wireless-u79uwXL29TY76Z2rM5mHXA, Linux Kernel Mailing List,
lin
On Wed, Sep 12, 2018 at 5:08 PM, Arnd Bergmann <arnd@arndb.de> wrote:
> The .ioctl and .compat_ioctl file operations have the same prototype so
> they can both point to the same function, which works great almost all
> the time when all the commands are compatible.
>
> One exception is the s390 architecture, where a compat pointer is only
> 31 bit wide, and converting it into a 64-bit pointer requires calling
> compat_ptr(). Most drivers here will ever run in s390, but since we now
> have a generic helper for it, it's easy enough to use it consistently.
>
> I double-checked all these drivers to ensure that all ioctl arguments
> are used as pointers or are ignored, but are not interpreted as integer
> values.
>
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
At least for the drm and dma-buf bits.
-Daniel
> ---
> drivers/android/binder.c | 2 +-
> drivers/crypto/qat/qat_common/adf_ctl_drv.c | 2 +-
> drivers/dma-buf/dma-buf.c | 4 +---
> drivers/dma-buf/sw_sync.c | 2 +-
> drivers/dma-buf/sync_file.c | 2 +-
> drivers/gpu/drm/amd/amdkfd/kfd_chardev.c | 2 +-
> drivers/hid/hidraw.c | 4 +---
> drivers/iio/industrialio-core.c | 2 +-
> drivers/infiniband/core/uverbs_main.c | 4 ++--
> drivers/media/rc/lirc_dev.c | 4 +---
> drivers/mfd/cros_ec_dev.c | 4 +---
> drivers/misc/vmw_vmci/vmci_host.c | 2 +-
> drivers/nvdimm/bus.c | 4 ++--
> drivers/nvme/host/core.c | 2 +-
> drivers/pci/switch/switchtec.c | 2 +-
> drivers/platform/x86/wmi.c | 2 +-
> drivers/rpmsg/rpmsg_char.c | 4 ++--
> drivers/sbus/char/display7seg.c | 2 +-
> drivers/sbus/char/envctrl.c | 4 +---
> drivers/scsi/3w-xxxx.c | 4 +---
> drivers/scsi/cxlflash/main.c | 2 +-
> drivers/scsi/esas2r/esas2r_main.c | 2 +-
> drivers/scsi/pmcraid.c | 4 +---
> drivers/staging/android/ion/ion.c | 4 +---
> drivers/staging/vme/devices/vme_user.c | 2 +-
> drivers/tee/tee_core.c | 2 +-
> drivers/usb/class/cdc-wdm.c | 2 +-
> drivers/usb/class/usbtmc.c | 4 +---
> drivers/video/fbdev/ps3fb.c | 2 +-
> drivers/virt/fsl_hypervisor.c | 2 +-
> fs/btrfs/super.c | 2 +-
> fs/ceph/dir.c | 2 +-
> fs/ceph/file.c | 2 +-
> fs/fuse/dev.c | 2 +-
> fs/notify/fanotify/fanotify_user.c | 2 +-
> fs/userfaultfd.c | 2 +-
> net/rfkill/core.c | 2 +-
> 37 files changed, 40 insertions(+), 58 deletions(-)
>
> diff --git a/drivers/android/binder.c b/drivers/android/binder.c
> index d58763b6b009..d2464f5759f8 100644
> --- a/drivers/android/binder.c
> +++ b/drivers/android/binder.c
> @@ -5576,7 +5576,7 @@ static const struct file_operations binder_fops = {
> .owner = THIS_MODULE,
> .poll = binder_poll,
> .unlocked_ioctl = binder_ioctl,
> - .compat_ioctl = binder_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .mmap = binder_mmap,
> .open = binder_open,
> .flush = binder_flush,
> diff --git a/drivers/crypto/qat/qat_common/adf_ctl_drv.c b/drivers/crypto/qat/qat_common/adf_ctl_drv.c
> index abc7a7f64d64..8ff77a70addc 100644
> --- a/drivers/crypto/qat/qat_common/adf_ctl_drv.c
> +++ b/drivers/crypto/qat/qat_common/adf_ctl_drv.c
> @@ -68,7 +68,7 @@ static long adf_ctl_ioctl(struct file *fp, unsigned int cmd, unsigned long arg);
> static const struct file_operations adf_ctl_ops = {
> .owner = THIS_MODULE,
> .unlocked_ioctl = adf_ctl_ioctl,
> - .compat_ioctl = adf_ctl_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> struct adf_ctl_drv_info {
> diff --git a/drivers/dma-buf/dma-buf.c b/drivers/dma-buf/dma-buf.c
> index 13884474d158..a6d7dc4cf7e9 100644
> --- a/drivers/dma-buf/dma-buf.c
> +++ b/drivers/dma-buf/dma-buf.c
> @@ -325,9 +325,7 @@ static const struct file_operations dma_buf_fops = {
> .llseek = dma_buf_llseek,
> .poll = dma_buf_poll,
> .unlocked_ioctl = dma_buf_ioctl,
> -#ifdef CONFIG_COMPAT
> - .compat_ioctl = dma_buf_ioctl,
> -#endif
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> /*
> diff --git a/drivers/dma-buf/sw_sync.c b/drivers/dma-buf/sw_sync.c
> index 53c1d6d36a64..bc810506d487 100644
> --- a/drivers/dma-buf/sw_sync.c
> +++ b/drivers/dma-buf/sw_sync.c
> @@ -419,5 +419,5 @@ const struct file_operations sw_sync_debugfs_fops = {
> .open = sw_sync_debugfs_open,
> .release = sw_sync_debugfs_release,
> .unlocked_ioctl = sw_sync_ioctl,
> - .compat_ioctl = sw_sync_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
> diff --git a/drivers/dma-buf/sync_file.c b/drivers/dma-buf/sync_file.c
> index 35dd06479867..1c64ed60c658 100644
> --- a/drivers/dma-buf/sync_file.c
> +++ b/drivers/dma-buf/sync_file.c
> @@ -488,5 +488,5 @@ static const struct file_operations sync_file_fops = {
> .release = sync_file_release,
> .poll = sync_file_poll,
> .unlocked_ioctl = sync_file_ioctl,
> - .compat_ioctl = sync_file_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
> diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
> index 297b36c26a05..1d7b1e3c3ebe 100644
> --- a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
> +++ b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
> @@ -47,7 +47,7 @@ static const char kfd_dev_name[] = "kfd";
> static const struct file_operations kfd_fops = {
> .owner = THIS_MODULE,
> .unlocked_ioctl = kfd_ioctl,
> - .compat_ioctl = kfd_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .open = kfd_open,
> .mmap = kfd_mmap,
> };
> diff --git a/drivers/hid/hidraw.c b/drivers/hid/hidraw.c
> index 4a44e48e08b2..e44b64812850 100644
> --- a/drivers/hid/hidraw.c
> +++ b/drivers/hid/hidraw.c
> @@ -476,9 +476,7 @@ static const struct file_operations hidraw_ops = {
> .release = hidraw_release,
> .unlocked_ioctl = hidraw_ioctl,
> .fasync = hidraw_fasync,
> -#ifdef CONFIG_COMPAT
> - .compat_ioctl = hidraw_ioctl,
> -#endif
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .llseek = noop_llseek,
> };
>
> diff --git a/drivers/iio/industrialio-core.c b/drivers/iio/industrialio-core.c
> index a062cfddc5af..22844b94b0e9 100644
> --- a/drivers/iio/industrialio-core.c
> +++ b/drivers/iio/industrialio-core.c
> @@ -1630,7 +1630,7 @@ static const struct file_operations iio_buffer_fileops = {
> .owner = THIS_MODULE,
> .llseek = noop_llseek,
> .unlocked_ioctl = iio_ioctl,
> - .compat_ioctl = iio_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static int iio_check_unique_scan_index(struct iio_dev *indio_dev)
> diff --git a/drivers/infiniband/core/uverbs_main.c b/drivers/infiniband/core/uverbs_main.c
> index 823beca448e1..f4755c1c9cfa 100644
> --- a/drivers/infiniband/core/uverbs_main.c
> +++ b/drivers/infiniband/core/uverbs_main.c
> @@ -930,7 +930,7 @@ static const struct file_operations uverbs_fops = {
> .release = ib_uverbs_close,
> .llseek = no_llseek,
> .unlocked_ioctl = ib_uverbs_ioctl,
> - .compat_ioctl = ib_uverbs_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static const struct file_operations uverbs_mmap_fops = {
> @@ -941,7 +941,7 @@ static const struct file_operations uverbs_mmap_fops = {
> .release = ib_uverbs_close,
> .llseek = no_llseek,
> .unlocked_ioctl = ib_uverbs_ioctl,
> - .compat_ioctl = ib_uverbs_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static struct ib_client uverbs_client = {
> diff --git a/drivers/media/rc/lirc_dev.c b/drivers/media/rc/lirc_dev.c
> index f862f1b7f996..077209f414ed 100644
> --- a/drivers/media/rc/lirc_dev.c
> +++ b/drivers/media/rc/lirc_dev.c
> @@ -730,9 +730,7 @@ static const struct file_operations lirc_fops = {
> .owner = THIS_MODULE,
> .write = ir_lirc_transmit_ir,
> .unlocked_ioctl = ir_lirc_ioctl,
> -#ifdef CONFIG_COMPAT
> - .compat_ioctl = ir_lirc_ioctl,
> -#endif
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .read = ir_lirc_read,
> .poll = ir_lirc_poll,
> .open = ir_lirc_open,
> diff --git a/drivers/mfd/cros_ec_dev.c b/drivers/mfd/cros_ec_dev.c
> index 999dac752bcc..35a04bcf55da 100644
> --- a/drivers/mfd/cros_ec_dev.c
> +++ b/drivers/mfd/cros_ec_dev.c
> @@ -258,9 +258,7 @@ static const struct file_operations fops = {
> .release = ec_device_release,
> .read = ec_device_read,
> .unlocked_ioctl = ec_device_ioctl,
> -#ifdef CONFIG_COMPAT
> - .compat_ioctl = ec_device_ioctl,
> -#endif
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static void cros_ec_sensors_register(struct cros_ec_dev *ec)
> diff --git a/drivers/misc/vmw_vmci/vmci_host.c b/drivers/misc/vmw_vmci/vmci_host.c
> index 83e0c95d20a4..1308f889e53b 100644
> --- a/drivers/misc/vmw_vmci/vmci_host.c
> +++ b/drivers/misc/vmw_vmci/vmci_host.c
> @@ -983,7 +983,7 @@ static const struct file_operations vmuser_fops = {
> .release = vmci_host_close,
> .poll = vmci_host_poll,
> .unlocked_ioctl = vmci_host_unlocked_ioctl,
> - .compat_ioctl = vmci_host_unlocked_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static struct miscdevice vmci_host_miscdev = {
> diff --git a/drivers/nvdimm/bus.c b/drivers/nvdimm/bus.c
> index 8aae6dcc839f..7449cbc55df7 100644
> --- a/drivers/nvdimm/bus.c
> +++ b/drivers/nvdimm/bus.c
> @@ -1133,7 +1133,7 @@ static const struct file_operations nvdimm_bus_fops = {
> .owner = THIS_MODULE,
> .open = nd_open,
> .unlocked_ioctl = nd_ioctl,
> - .compat_ioctl = nd_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .llseek = noop_llseek,
> };
>
> @@ -1141,7 +1141,7 @@ static const struct file_operations nvdimm_fops = {
> .owner = THIS_MODULE,
> .open = nd_open,
> .unlocked_ioctl = nvdimm_ioctl,
> - .compat_ioctl = nvdimm_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .llseek = noop_llseek,
> };
>
> diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
> index dd8ec1dd9219..2d986f573a29 100644
> --- a/drivers/nvme/host/core.c
> +++ b/drivers/nvme/host/core.c
> @@ -2579,7 +2579,7 @@ static const struct file_operations nvme_dev_fops = {
> .owner = THIS_MODULE,
> .open = nvme_dev_open,
> .unlocked_ioctl = nvme_dev_ioctl,
> - .compat_ioctl = nvme_dev_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static ssize_t nvme_sysfs_reset(struct device *dev,
> diff --git a/drivers/pci/switch/switchtec.c b/drivers/pci/switch/switchtec.c
> index 9940cc70f38b..4296919c784e 100644
> --- a/drivers/pci/switch/switchtec.c
> +++ b/drivers/pci/switch/switchtec.c
> @@ -967,7 +967,7 @@ static const struct file_operations switchtec_fops = {
> .read = switchtec_dev_read,
> .poll = switchtec_dev_poll,
> .unlocked_ioctl = switchtec_dev_ioctl,
> - .compat_ioctl = switchtec_dev_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static void link_event_work(struct work_struct *work)
> diff --git a/drivers/platform/x86/wmi.c b/drivers/platform/x86/wmi.c
> index 04791ea5d97b..e4d0697e07d6 100644
> --- a/drivers/platform/x86/wmi.c
> +++ b/drivers/platform/x86/wmi.c
> @@ -886,7 +886,7 @@ static const struct file_operations wmi_fops = {
> .read = wmi_char_read,
> .open = wmi_char_open,
> .unlocked_ioctl = wmi_ioctl,
> - .compat_ioctl = wmi_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static int wmi_dev_probe(struct device *dev)
> diff --git a/drivers/rpmsg/rpmsg_char.c b/drivers/rpmsg/rpmsg_char.c
> index a76b963a7e50..02aefb2b2d47 100644
> --- a/drivers/rpmsg/rpmsg_char.c
> +++ b/drivers/rpmsg/rpmsg_char.c
> @@ -285,7 +285,7 @@ static const struct file_operations rpmsg_eptdev_fops = {
> .write = rpmsg_eptdev_write,
> .poll = rpmsg_eptdev_poll,
> .unlocked_ioctl = rpmsg_eptdev_ioctl,
> - .compat_ioctl = rpmsg_eptdev_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static ssize_t name_show(struct device *dev, struct device_attribute *attr,
> @@ -446,7 +446,7 @@ static const struct file_operations rpmsg_ctrldev_fops = {
> .open = rpmsg_ctrldev_open,
> .release = rpmsg_ctrldev_release,
> .unlocked_ioctl = rpmsg_ctrldev_ioctl,
> - .compat_ioctl = rpmsg_ctrldev_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static void rpmsg_ctrldev_release_device(struct device *dev)
> diff --git a/drivers/sbus/char/display7seg.c b/drivers/sbus/char/display7seg.c
> index 5c8ed7350a04..064fe7247eb2 100644
> --- a/drivers/sbus/char/display7seg.c
> +++ b/drivers/sbus/char/display7seg.c
> @@ -155,7 +155,7 @@ static long d7s_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
> static const struct file_operations d7s_fops = {
> .owner = THIS_MODULE,
> .unlocked_ioctl = d7s_ioctl,
> - .compat_ioctl = d7s_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .open = d7s_open,
> .release = d7s_release,
> .llseek = noop_llseek,
> diff --git a/drivers/sbus/char/envctrl.c b/drivers/sbus/char/envctrl.c
> index 56e962a01493..a26665ccea56 100644
> --- a/drivers/sbus/char/envctrl.c
> +++ b/drivers/sbus/char/envctrl.c
> @@ -714,9 +714,7 @@ static const struct file_operations envctrl_fops = {
> .owner = THIS_MODULE,
> .read = envctrl_read,
> .unlocked_ioctl = envctrl_ioctl,
> -#ifdef CONFIG_COMPAT
> - .compat_ioctl = envctrl_ioctl,
> -#endif
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .open = envctrl_open,
> .release = envctrl_release,
> .llseek = noop_llseek,
> diff --git a/drivers/scsi/3w-xxxx.c b/drivers/scsi/3w-xxxx.c
> index 471366945bd4..86c9f22a152f 100644
> --- a/drivers/scsi/3w-xxxx.c
> +++ b/drivers/scsi/3w-xxxx.c
> @@ -1047,9 +1047,7 @@ static int tw_chrdev_open(struct inode *inode, struct file *file)
> static const struct file_operations tw_fops = {
> .owner = THIS_MODULE,
> .unlocked_ioctl = tw_chrdev_ioctl,
> -#ifdef CONFIG_COMPAT
> - .compat_ioctl = tw_chrdev_ioctl,
> -#endif
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .open = tw_chrdev_open,
> .release = NULL,
> .llseek = noop_llseek,
> diff --git a/drivers/scsi/cxlflash/main.c b/drivers/scsi/cxlflash/main.c
> index 6637116529aa..d968efeb50e8 100644
> --- a/drivers/scsi/cxlflash/main.c
> +++ b/drivers/scsi/cxlflash/main.c
> @@ -3596,7 +3596,7 @@ static const struct file_operations cxlflash_chr_fops = {
> .owner = THIS_MODULE,
> .open = cxlflash_chr_open,
> .unlocked_ioctl = cxlflash_chr_ioctl,
> - .compat_ioctl = cxlflash_chr_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> /**
> diff --git a/drivers/scsi/esas2r/esas2r_main.c b/drivers/scsi/esas2r/esas2r_main.c
> index c07118617d89..95142292e702 100644
> --- a/drivers/scsi/esas2r/esas2r_main.c
> +++ b/drivers/scsi/esas2r/esas2r_main.c
> @@ -614,7 +614,7 @@ static int __init esas2r_init(void)
>
> /* Handle ioctl calls to "/proc/scsi/esas2r/ATTOnode" */
> static const struct file_operations esas2r_proc_fops = {
> - .compat_ioctl = esas2r_proc_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .unlocked_ioctl = esas2r_proc_ioctl,
> };
>
> diff --git a/drivers/scsi/pmcraid.c b/drivers/scsi/pmcraid.c
> index 4e86994e10e8..8a8c73d3bdad 100644
> --- a/drivers/scsi/pmcraid.c
> +++ b/drivers/scsi/pmcraid.c
> @@ -3999,9 +3999,7 @@ static const struct file_operations pmcraid_fops = {
> .open = pmcraid_chr_open,
> .fasync = pmcraid_chr_fasync,
> .unlocked_ioctl = pmcraid_chr_ioctl,
> -#ifdef CONFIG_COMPAT
> - .compat_ioctl = pmcraid_chr_ioctl,
> -#endif
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .llseek = noop_llseek,
> };
>
> diff --git a/drivers/staging/android/ion/ion.c b/drivers/staging/android/ion/ion.c
> index 99073325b0c0..ef727c235392 100644
> --- a/drivers/staging/android/ion/ion.c
> +++ b/drivers/staging/android/ion/ion.c
> @@ -484,9 +484,7 @@ int ion_query_heaps(struct ion_heap_query *query)
> static const struct file_operations ion_fops = {
> .owner = THIS_MODULE,
> .unlocked_ioctl = ion_ioctl,
> -#ifdef CONFIG_COMPAT
> - .compat_ioctl = ion_ioctl,
> -#endif
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static int debug_shrink_set(void *data, u64 val)
> diff --git a/drivers/staging/vme/devices/vme_user.c b/drivers/staging/vme/devices/vme_user.c
> index 6a33aaa1a49f..568700ffd2f2 100644
> --- a/drivers/staging/vme/devices/vme_user.c
> +++ b/drivers/staging/vme/devices/vme_user.c
> @@ -494,7 +494,7 @@ static const struct file_operations vme_user_fops = {
> .write = vme_user_write,
> .llseek = vme_user_llseek,
> .unlocked_ioctl = vme_user_unlocked_ioctl,
> - .compat_ioctl = vme_user_unlocked_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .mmap = vme_user_mmap,
> };
>
> diff --git a/drivers/tee/tee_core.c b/drivers/tee/tee_core.c
> index dd46b758852a..cb79f28be894 100644
> --- a/drivers/tee/tee_core.c
> +++ b/drivers/tee/tee_core.c
> @@ -670,7 +670,7 @@ static const struct file_operations tee_fops = {
> .open = tee_open,
> .release = tee_release,
> .unlocked_ioctl = tee_ioctl,
> - .compat_ioctl = tee_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static void tee_release_device(struct device *dev)
> diff --git a/drivers/usb/class/cdc-wdm.c b/drivers/usb/class/cdc-wdm.c
> index bec581fb7c63..6e4998c8e64f 100644
> --- a/drivers/usb/class/cdc-wdm.c
> +++ b/drivers/usb/class/cdc-wdm.c
> @@ -724,7 +724,7 @@ static const struct file_operations wdm_fops = {
> .release = wdm_release,
> .poll = wdm_poll,
> .unlocked_ioctl = wdm_ioctl,
> - .compat_ioctl = wdm_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .llseek = noop_llseek,
> };
>
> diff --git a/drivers/usb/class/usbtmc.c b/drivers/usb/class/usbtmc.c
> index 83ffa5a14c3d..d5da47c4c462 100644
> --- a/drivers/usb/class/usbtmc.c
> +++ b/drivers/usb/class/usbtmc.c
> @@ -1460,9 +1460,7 @@ static const struct file_operations fops = {
> .open = usbtmc_open,
> .release = usbtmc_release,
> .unlocked_ioctl = usbtmc_ioctl,
> -#ifdef CONFIG_COMPAT
> - .compat_ioctl = usbtmc_ioctl,
> -#endif
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .fasync = usbtmc_fasync,
> .poll = usbtmc_poll,
> .llseek = default_llseek,
> diff --git a/drivers/video/fbdev/ps3fb.c b/drivers/video/fbdev/ps3fb.c
> index 5ed2db39d823..f9f8ffaf1c4a 100644
> --- a/drivers/video/fbdev/ps3fb.c
> +++ b/drivers/video/fbdev/ps3fb.c
> @@ -949,7 +949,7 @@ static struct fb_ops ps3fb_ops = {
> .fb_mmap = ps3fb_mmap,
> .fb_blank = ps3fb_blank,
> .fb_ioctl = ps3fb_ioctl,
> - .fb_compat_ioctl = ps3fb_ioctl
> + .fb_compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static const struct fb_fix_screeninfo ps3fb_fix = {
> diff --git a/drivers/virt/fsl_hypervisor.c b/drivers/virt/fsl_hypervisor.c
> index 8ba726e600e9..406b7e492214 100644
> --- a/drivers/virt/fsl_hypervisor.c
> +++ b/drivers/virt/fsl_hypervisor.c
> @@ -703,7 +703,7 @@ static const struct file_operations fsl_hv_fops = {
> .poll = fsl_hv_poll,
> .read = fsl_hv_read,
> .unlocked_ioctl = fsl_hv_ioctl,
> - .compat_ioctl = fsl_hv_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static struct miscdevice fsl_hv_misc_dev = {
> diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
> index 6601c9aa5e35..2b5a8ad86305 100644
> --- a/fs/btrfs/super.c
> +++ b/fs/btrfs/super.c
> @@ -2352,7 +2352,7 @@ static const struct super_operations btrfs_super_ops = {
> static const struct file_operations btrfs_ctl_fops = {
> .open = btrfs_control_open,
> .unlocked_ioctl = btrfs_control_ioctl,
> - .compat_ioctl = btrfs_control_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .owner = THIS_MODULE,
> .llseek = noop_llseek,
> };
> diff --git a/fs/ceph/dir.c b/fs/ceph/dir.c
> index da73f29d7faa..eb869fe6774d 100644
> --- a/fs/ceph/dir.c
> +++ b/fs/ceph/dir.c
> @@ -1489,7 +1489,7 @@ const struct file_operations ceph_dir_fops = {
> .open = ceph_open,
> .release = ceph_release,
> .unlocked_ioctl = ceph_ioctl,
> - .compat_ioctl = ceph_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .fsync = ceph_fsync,
> .lock = ceph_lock,
> .flock = ceph_flock,
> diff --git a/fs/ceph/file.c b/fs/ceph/file.c
> index 92ab20433682..85094042cfac 100644
> --- a/fs/ceph/file.c
> +++ b/fs/ceph/file.c
> @@ -1842,7 +1842,7 @@ const struct file_operations ceph_file_fops = {
> .splice_read = generic_file_splice_read,
> .splice_write = iter_file_splice_write,
> .unlocked_ioctl = ceph_ioctl,
> - .compat_ioctl = ceph_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .fallocate = ceph_fallocate,
> };
>
> diff --git a/fs/fuse/dev.c b/fs/fuse/dev.c
> index 11ea2c4a38ab..a6d4a24963ed 100644
> --- a/fs/fuse/dev.c
> +++ b/fs/fuse/dev.c
> @@ -2258,7 +2258,7 @@ const struct file_operations fuse_dev_operations = {
> .release = fuse_dev_release,
> .fasync = fuse_dev_fasync,
> .unlocked_ioctl = fuse_dev_ioctl,
> - .compat_ioctl = fuse_dev_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
> EXPORT_SYMBOL_GPL(fuse_dev_operations);
>
> diff --git a/fs/notify/fanotify/fanotify_user.c b/fs/notify/fanotify/fanotify_user.c
> index 69054886915b..fc4193b384cf 100644
> --- a/fs/notify/fanotify/fanotify_user.c
> +++ b/fs/notify/fanotify/fanotify_user.c
> @@ -447,7 +447,7 @@ static const struct file_operations fanotify_fops = {
> .fasync = NULL,
> .release = fanotify_release,
> .unlocked_ioctl = fanotify_ioctl,
> - .compat_ioctl = fanotify_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .llseek = noop_llseek,
> };
>
> diff --git a/fs/userfaultfd.c b/fs/userfaultfd.c
> index bfa0ec69f924..bc9118b58a8a 100644
> --- a/fs/userfaultfd.c
> +++ b/fs/userfaultfd.c
> @@ -1878,7 +1878,7 @@ static const struct file_operations userfaultfd_fops = {
> .poll = userfaultfd_poll,
> .read = userfaultfd_read,
> .unlocked_ioctl = userfaultfd_ioctl,
> - .compat_ioctl = userfaultfd_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .llseek = noop_llseek,
> };
>
> diff --git a/net/rfkill/core.c b/net/rfkill/core.c
> index 1355f5ca8d22..ba68b53f58ab 100644
> --- a/net/rfkill/core.c
> +++ b/net/rfkill/core.c
> @@ -1323,7 +1323,7 @@ static const struct file_operations rfkill_fops = {
> .release = rfkill_fop_release,
> #ifdef CONFIG_RFKILL_INPUT
> .unlocked_ioctl = rfkill_fop_ioctl,
> - .compat_ioctl = rfkill_fop_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> #endif
> .llseek = no_llseek,
> };
> --
> 2.18.0
>
> _______________________________________________
> dri-devel mailing list
> dri-devel@lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/dri-devel
--
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch
_______________________________________________
amd-gfx mailing list
amd-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/amd-gfx
^ permalink raw reply [flat|nested] 141+ messages in thread
* Re: [PATCH v2 05/17] compat_ioctl: move more drivers to generic_compat_ioctl_ptrarg
@ 2018-09-12 15:58 ` Daniel Vetter
0 siblings, 0 replies; 141+ messages in thread
From: Daniel Vetter @ 2018-09-12 15:58 UTC (permalink / raw)
To: Arnd Bergmann
Cc: Al Viro, Linux Fbdev development list, linux-iio, Linux PCI,
linux-remoteproc, linux-nvme, platform-driver-x86, sparclinux,
driverdevel, linux-scsi, linux-nvdimm, linux-rdma, qat-linux,
amd-gfx list, linux-input,
open list:DMA BUFFER SHARING FRAMEWORK,
moderated list:DMA BUFFER SHARING FRAMEWORK, dri-devel,
ceph-devel, Greg Kroah-Hartman, USB list, linux-wireless,
Linux Kernel Mailing List, linux-crypto, netdev, linux-fsdevel,
linuxppc-dev, David S. Miller, linux-btrfs
On Wed, Sep 12, 2018 at 5:08 PM, Arnd Bergmann <arnd@arndb.de> wrote:
> The .ioctl and .compat_ioctl file operations have the same prototype so
> they can both point to the same function, which works great almost all
> the time when all the commands are compatible.
>
> One exception is the s390 architecture, where a compat pointer is only
> 31 bit wide, and converting it into a 64-bit pointer requires calling
> compat_ptr(). Most drivers here will ever run in s390, but since we now
> have a generic helper for it, it's easy enough to use it consistently.
>
> I double-checked all these drivers to ensure that all ioctl arguments
> are used as pointers or are ignored, but are not interpreted as integer
> values.
>
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
At least for the drm and dma-buf bits.
-Daniel
> ---
> drivers/android/binder.c | 2 +-
> drivers/crypto/qat/qat_common/adf_ctl_drv.c | 2 +-
> drivers/dma-buf/dma-buf.c | 4 +---
> drivers/dma-buf/sw_sync.c | 2 +-
> drivers/dma-buf/sync_file.c | 2 +-
> drivers/gpu/drm/amd/amdkfd/kfd_chardev.c | 2 +-
> drivers/hid/hidraw.c | 4 +---
> drivers/iio/industrialio-core.c | 2 +-
> drivers/infiniband/core/uverbs_main.c | 4 ++--
> drivers/media/rc/lirc_dev.c | 4 +---
> drivers/mfd/cros_ec_dev.c | 4 +---
> drivers/misc/vmw_vmci/vmci_host.c | 2 +-
> drivers/nvdimm/bus.c | 4 ++--
> drivers/nvme/host/core.c | 2 +-
> drivers/pci/switch/switchtec.c | 2 +-
> drivers/platform/x86/wmi.c | 2 +-
> drivers/rpmsg/rpmsg_char.c | 4 ++--
> drivers/sbus/char/display7seg.c | 2 +-
> drivers/sbus/char/envctrl.c | 4 +---
> drivers/scsi/3w-xxxx.c | 4 +---
> drivers/scsi/cxlflash/main.c | 2 +-
> drivers/scsi/esas2r/esas2r_main.c | 2 +-
> drivers/scsi/pmcraid.c | 4 +---
> drivers/staging/android/ion/ion.c | 4 +---
> drivers/staging/vme/devices/vme_user.c | 2 +-
> drivers/tee/tee_core.c | 2 +-
> drivers/usb/class/cdc-wdm.c | 2 +-
> drivers/usb/class/usbtmc.c | 4 +---
> drivers/video/fbdev/ps3fb.c | 2 +-
> drivers/virt/fsl_hypervisor.c | 2 +-
> fs/btrfs/super.c | 2 +-
> fs/ceph/dir.c | 2 +-
> fs/ceph/file.c | 2 +-
> fs/fuse/dev.c | 2 +-
> fs/notify/fanotify/fanotify_user.c | 2 +-
> fs/userfaultfd.c | 2 +-
> net/rfkill/core.c | 2 +-
> 37 files changed, 40 insertions(+), 58 deletions(-)
>
> diff --git a/drivers/android/binder.c b/drivers/android/binder.c
> index d58763b6b009..d2464f5759f8 100644
> --- a/drivers/android/binder.c
> +++ b/drivers/android/binder.c
> @@ -5576,7 +5576,7 @@ static const struct file_operations binder_fops = {
> .owner = THIS_MODULE,
> .poll = binder_poll,
> .unlocked_ioctl = binder_ioctl,
> - .compat_ioctl = binder_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .mmap = binder_mmap,
> .open = binder_open,
> .flush = binder_flush,
> diff --git a/drivers/crypto/qat/qat_common/adf_ctl_drv.c b/drivers/crypto/qat/qat_common/adf_ctl_drv.c
> index abc7a7f64d64..8ff77a70addc 100644
> --- a/drivers/crypto/qat/qat_common/adf_ctl_drv.c
> +++ b/drivers/crypto/qat/qat_common/adf_ctl_drv.c
> @@ -68,7 +68,7 @@ static long adf_ctl_ioctl(struct file *fp, unsigned int cmd, unsigned long arg);
> static const struct file_operations adf_ctl_ops = {
> .owner = THIS_MODULE,
> .unlocked_ioctl = adf_ctl_ioctl,
> - .compat_ioctl = adf_ctl_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> struct adf_ctl_drv_info {
> diff --git a/drivers/dma-buf/dma-buf.c b/drivers/dma-buf/dma-buf.c
> index 13884474d158..a6d7dc4cf7e9 100644
> --- a/drivers/dma-buf/dma-buf.c
> +++ b/drivers/dma-buf/dma-buf.c
> @@ -325,9 +325,7 @@ static const struct file_operations dma_buf_fops = {
> .llseek = dma_buf_llseek,
> .poll = dma_buf_poll,
> .unlocked_ioctl = dma_buf_ioctl,
> -#ifdef CONFIG_COMPAT
> - .compat_ioctl = dma_buf_ioctl,
> -#endif
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> /*
> diff --git a/drivers/dma-buf/sw_sync.c b/drivers/dma-buf/sw_sync.c
> index 53c1d6d36a64..bc810506d487 100644
> --- a/drivers/dma-buf/sw_sync.c
> +++ b/drivers/dma-buf/sw_sync.c
> @@ -419,5 +419,5 @@ const struct file_operations sw_sync_debugfs_fops = {
> .open = sw_sync_debugfs_open,
> .release = sw_sync_debugfs_release,
> .unlocked_ioctl = sw_sync_ioctl,
> - .compat_ioctl = sw_sync_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
> diff --git a/drivers/dma-buf/sync_file.c b/drivers/dma-buf/sync_file.c
> index 35dd06479867..1c64ed60c658 100644
> --- a/drivers/dma-buf/sync_file.c
> +++ b/drivers/dma-buf/sync_file.c
> @@ -488,5 +488,5 @@ static const struct file_operations sync_file_fops = {
> .release = sync_file_release,
> .poll = sync_file_poll,
> .unlocked_ioctl = sync_file_ioctl,
> - .compat_ioctl = sync_file_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
> diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
> index 297b36c26a05..1d7b1e3c3ebe 100644
> --- a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
> +++ b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
> @@ -47,7 +47,7 @@ static const char kfd_dev_name[] = "kfd";
> static const struct file_operations kfd_fops = {
> .owner = THIS_MODULE,
> .unlocked_ioctl = kfd_ioctl,
> - .compat_ioctl = kfd_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .open = kfd_open,
> .mmap = kfd_mmap,
> };
> diff --git a/drivers/hid/hidraw.c b/drivers/hid/hidraw.c
> index 4a44e48e08b2..e44b64812850 100644
> --- a/drivers/hid/hidraw.c
> +++ b/drivers/hid/hidraw.c
> @@ -476,9 +476,7 @@ static const struct file_operations hidraw_ops = {
> .release = hidraw_release,
> .unlocked_ioctl = hidraw_ioctl,
> .fasync = hidraw_fasync,
> -#ifdef CONFIG_COMPAT
> - .compat_ioctl = hidraw_ioctl,
> -#endif
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .llseek = noop_llseek,
> };
>
> diff --git a/drivers/iio/industrialio-core.c b/drivers/iio/industrialio-core.c
> index a062cfddc5af..22844b94b0e9 100644
> --- a/drivers/iio/industrialio-core.c
> +++ b/drivers/iio/industrialio-core.c
> @@ -1630,7 +1630,7 @@ static const struct file_operations iio_buffer_fileops = {
> .owner = THIS_MODULE,
> .llseek = noop_llseek,
> .unlocked_ioctl = iio_ioctl,
> - .compat_ioctl = iio_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static int iio_check_unique_scan_index(struct iio_dev *indio_dev)
> diff --git a/drivers/infiniband/core/uverbs_main.c b/drivers/infiniband/core/uverbs_main.c
> index 823beca448e1..f4755c1c9cfa 100644
> --- a/drivers/infiniband/core/uverbs_main.c
> +++ b/drivers/infiniband/core/uverbs_main.c
> @@ -930,7 +930,7 @@ static const struct file_operations uverbs_fops = {
> .release = ib_uverbs_close,
> .llseek = no_llseek,
> .unlocked_ioctl = ib_uverbs_ioctl,
> - .compat_ioctl = ib_uverbs_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static const struct file_operations uverbs_mmap_fops = {
> @@ -941,7 +941,7 @@ static const struct file_operations uverbs_mmap_fops = {
> .release = ib_uverbs_close,
> .llseek = no_llseek,
> .unlocked_ioctl = ib_uverbs_ioctl,
> - .compat_ioctl = ib_uverbs_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static struct ib_client uverbs_client = {
> diff --git a/drivers/media/rc/lirc_dev.c b/drivers/media/rc/lirc_dev.c
> index f862f1b7f996..077209f414ed 100644
> --- a/drivers/media/rc/lirc_dev.c
> +++ b/drivers/media/rc/lirc_dev.c
> @@ -730,9 +730,7 @@ static const struct file_operations lirc_fops = {
> .owner = THIS_MODULE,
> .write = ir_lirc_transmit_ir,
> .unlocked_ioctl = ir_lirc_ioctl,
> -#ifdef CONFIG_COMPAT
> - .compat_ioctl = ir_lirc_ioctl,
> -#endif
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .read = ir_lirc_read,
> .poll = ir_lirc_poll,
> .open = ir_lirc_open,
> diff --git a/drivers/mfd/cros_ec_dev.c b/drivers/mfd/cros_ec_dev.c
> index 999dac752bcc..35a04bcf55da 100644
> --- a/drivers/mfd/cros_ec_dev.c
> +++ b/drivers/mfd/cros_ec_dev.c
> @@ -258,9 +258,7 @@ static const struct file_operations fops = {
> .release = ec_device_release,
> .read = ec_device_read,
> .unlocked_ioctl = ec_device_ioctl,
> -#ifdef CONFIG_COMPAT
> - .compat_ioctl = ec_device_ioctl,
> -#endif
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static void cros_ec_sensors_register(struct cros_ec_dev *ec)
> diff --git a/drivers/misc/vmw_vmci/vmci_host.c b/drivers/misc/vmw_vmci/vmci_host.c
> index 83e0c95d20a4..1308f889e53b 100644
> --- a/drivers/misc/vmw_vmci/vmci_host.c
> +++ b/drivers/misc/vmw_vmci/vmci_host.c
> @@ -983,7 +983,7 @@ static const struct file_operations vmuser_fops = {
> .release = vmci_host_close,
> .poll = vmci_host_poll,
> .unlocked_ioctl = vmci_host_unlocked_ioctl,
> - .compat_ioctl = vmci_host_unlocked_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static struct miscdevice vmci_host_miscdev = {
> diff --git a/drivers/nvdimm/bus.c b/drivers/nvdimm/bus.c
> index 8aae6dcc839f..7449cbc55df7 100644
> --- a/drivers/nvdimm/bus.c
> +++ b/drivers/nvdimm/bus.c
> @@ -1133,7 +1133,7 @@ static const struct file_operations nvdimm_bus_fops = {
> .owner = THIS_MODULE,
> .open = nd_open,
> .unlocked_ioctl = nd_ioctl,
> - .compat_ioctl = nd_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .llseek = noop_llseek,
> };
>
> @@ -1141,7 +1141,7 @@ static const struct file_operations nvdimm_fops = {
> .owner = THIS_MODULE,
> .open = nd_open,
> .unlocked_ioctl = nvdimm_ioctl,
> - .compat_ioctl = nvdimm_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .llseek = noop_llseek,
> };
>
> diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
> index dd8ec1dd9219..2d986f573a29 100644
> --- a/drivers/nvme/host/core.c
> +++ b/drivers/nvme/host/core.c
> @@ -2579,7 +2579,7 @@ static const struct file_operations nvme_dev_fops = {
> .owner = THIS_MODULE,
> .open = nvme_dev_open,
> .unlocked_ioctl = nvme_dev_ioctl,
> - .compat_ioctl = nvme_dev_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static ssize_t nvme_sysfs_reset(struct device *dev,
> diff --git a/drivers/pci/switch/switchtec.c b/drivers/pci/switch/switchtec.c
> index 9940cc70f38b..4296919c784e 100644
> --- a/drivers/pci/switch/switchtec.c
> +++ b/drivers/pci/switch/switchtec.c
> @@ -967,7 +967,7 @@ static const struct file_operations switchtec_fops = {
> .read = switchtec_dev_read,
> .poll = switchtec_dev_poll,
> .unlocked_ioctl = switchtec_dev_ioctl,
> - .compat_ioctl = switchtec_dev_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static void link_event_work(struct work_struct *work)
> diff --git a/drivers/platform/x86/wmi.c b/drivers/platform/x86/wmi.c
> index 04791ea5d97b..e4d0697e07d6 100644
> --- a/drivers/platform/x86/wmi.c
> +++ b/drivers/platform/x86/wmi.c
> @@ -886,7 +886,7 @@ static const struct file_operations wmi_fops = {
> .read = wmi_char_read,
> .open = wmi_char_open,
> .unlocked_ioctl = wmi_ioctl,
> - .compat_ioctl = wmi_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static int wmi_dev_probe(struct device *dev)
> diff --git a/drivers/rpmsg/rpmsg_char.c b/drivers/rpmsg/rpmsg_char.c
> index a76b963a7e50..02aefb2b2d47 100644
> --- a/drivers/rpmsg/rpmsg_char.c
> +++ b/drivers/rpmsg/rpmsg_char.c
> @@ -285,7 +285,7 @@ static const struct file_operations rpmsg_eptdev_fops = {
> .write = rpmsg_eptdev_write,
> .poll = rpmsg_eptdev_poll,
> .unlocked_ioctl = rpmsg_eptdev_ioctl,
> - .compat_ioctl = rpmsg_eptdev_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static ssize_t name_show(struct device *dev, struct device_attribute *attr,
> @@ -446,7 +446,7 @@ static const struct file_operations rpmsg_ctrldev_fops = {
> .open = rpmsg_ctrldev_open,
> .release = rpmsg_ctrldev_release,
> .unlocked_ioctl = rpmsg_ctrldev_ioctl,
> - .compat_ioctl = rpmsg_ctrldev_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static void rpmsg_ctrldev_release_device(struct device *dev)
> diff --git a/drivers/sbus/char/display7seg.c b/drivers/sbus/char/display7seg.c
> index 5c8ed7350a04..064fe7247eb2 100644
> --- a/drivers/sbus/char/display7seg.c
> +++ b/drivers/sbus/char/display7seg.c
> @@ -155,7 +155,7 @@ static long d7s_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
> static const struct file_operations d7s_fops = {
> .owner = THIS_MODULE,
> .unlocked_ioctl = d7s_ioctl,
> - .compat_ioctl = d7s_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .open = d7s_open,
> .release = d7s_release,
> .llseek = noop_llseek,
> diff --git a/drivers/sbus/char/envctrl.c b/drivers/sbus/char/envctrl.c
> index 56e962a01493..a26665ccea56 100644
> --- a/drivers/sbus/char/envctrl.c
> +++ b/drivers/sbus/char/envctrl.c
> @@ -714,9 +714,7 @@ static const struct file_operations envctrl_fops = {
> .owner = THIS_MODULE,
> .read = envctrl_read,
> .unlocked_ioctl = envctrl_ioctl,
> -#ifdef CONFIG_COMPAT
> - .compat_ioctl = envctrl_ioctl,
> -#endif
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .open = envctrl_open,
> .release = envctrl_release,
> .llseek = noop_llseek,
> diff --git a/drivers/scsi/3w-xxxx.c b/drivers/scsi/3w-xxxx.c
> index 471366945bd4..86c9f22a152f 100644
> --- a/drivers/scsi/3w-xxxx.c
> +++ b/drivers/scsi/3w-xxxx.c
> @@ -1047,9 +1047,7 @@ static int tw_chrdev_open(struct inode *inode, struct file *file)
> static const struct file_operations tw_fops = {
> .owner = THIS_MODULE,
> .unlocked_ioctl = tw_chrdev_ioctl,
> -#ifdef CONFIG_COMPAT
> - .compat_ioctl = tw_chrdev_ioctl,
> -#endif
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .open = tw_chrdev_open,
> .release = NULL,
> .llseek = noop_llseek,
> diff --git a/drivers/scsi/cxlflash/main.c b/drivers/scsi/cxlflash/main.c
> index 6637116529aa..d968efeb50e8 100644
> --- a/drivers/scsi/cxlflash/main.c
> +++ b/drivers/scsi/cxlflash/main.c
> @@ -3596,7 +3596,7 @@ static const struct file_operations cxlflash_chr_fops = {
> .owner = THIS_MODULE,
> .open = cxlflash_chr_open,
> .unlocked_ioctl = cxlflash_chr_ioctl,
> - .compat_ioctl = cxlflash_chr_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> /**
> diff --git a/drivers/scsi/esas2r/esas2r_main.c b/drivers/scsi/esas2r/esas2r_main.c
> index c07118617d89..95142292e702 100644
> --- a/drivers/scsi/esas2r/esas2r_main.c
> +++ b/drivers/scsi/esas2r/esas2r_main.c
> @@ -614,7 +614,7 @@ static int __init esas2r_init(void)
>
> /* Handle ioctl calls to "/proc/scsi/esas2r/ATTOnode" */
> static const struct file_operations esas2r_proc_fops = {
> - .compat_ioctl = esas2r_proc_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .unlocked_ioctl = esas2r_proc_ioctl,
> };
>
> diff --git a/drivers/scsi/pmcraid.c b/drivers/scsi/pmcraid.c
> index 4e86994e10e8..8a8c73d3bdad 100644
> --- a/drivers/scsi/pmcraid.c
> +++ b/drivers/scsi/pmcraid.c
> @@ -3999,9 +3999,7 @@ static const struct file_operations pmcraid_fops = {
> .open = pmcraid_chr_open,
> .fasync = pmcraid_chr_fasync,
> .unlocked_ioctl = pmcraid_chr_ioctl,
> -#ifdef CONFIG_COMPAT
> - .compat_ioctl = pmcraid_chr_ioctl,
> -#endif
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .llseek = noop_llseek,
> };
>
> diff --git a/drivers/staging/android/ion/ion.c b/drivers/staging/android/ion/ion.c
> index 99073325b0c0..ef727c235392 100644
> --- a/drivers/staging/android/ion/ion.c
> +++ b/drivers/staging/android/ion/ion.c
> @@ -484,9 +484,7 @@ int ion_query_heaps(struct ion_heap_query *query)
> static const struct file_operations ion_fops = {
> .owner = THIS_MODULE,
> .unlocked_ioctl = ion_ioctl,
> -#ifdef CONFIG_COMPAT
> - .compat_ioctl = ion_ioctl,
> -#endif
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static int debug_shrink_set(void *data, u64 val)
> diff --git a/drivers/staging/vme/devices/vme_user.c b/drivers/staging/vme/devices/vme_user.c
> index 6a33aaa1a49f..568700ffd2f2 100644
> --- a/drivers/staging/vme/devices/vme_user.c
> +++ b/drivers/staging/vme/devices/vme_user.c
> @@ -494,7 +494,7 @@ static const struct file_operations vme_user_fops = {
> .write = vme_user_write,
> .llseek = vme_user_llseek,
> .unlocked_ioctl = vme_user_unlocked_ioctl,
> - .compat_ioctl = vme_user_unlocked_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .mmap = vme_user_mmap,
> };
>
> diff --git a/drivers/tee/tee_core.c b/drivers/tee/tee_core.c
> index dd46b758852a..cb79f28be894 100644
> --- a/drivers/tee/tee_core.c
> +++ b/drivers/tee/tee_core.c
> @@ -670,7 +670,7 @@ static const struct file_operations tee_fops = {
> .open = tee_open,
> .release = tee_release,
> .unlocked_ioctl = tee_ioctl,
> - .compat_ioctl = tee_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static void tee_release_device(struct device *dev)
> diff --git a/drivers/usb/class/cdc-wdm.c b/drivers/usb/class/cdc-wdm.c
> index bec581fb7c63..6e4998c8e64f 100644
> --- a/drivers/usb/class/cdc-wdm.c
> +++ b/drivers/usb/class/cdc-wdm.c
> @@ -724,7 +724,7 @@ static const struct file_operations wdm_fops = {
> .release = wdm_release,
> .poll = wdm_poll,
> .unlocked_ioctl = wdm_ioctl,
> - .compat_ioctl = wdm_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .llseek = noop_llseek,
> };
>
> diff --git a/drivers/usb/class/usbtmc.c b/drivers/usb/class/usbtmc.c
> index 83ffa5a14c3d..d5da47c4c462 100644
> --- a/drivers/usb/class/usbtmc.c
> +++ b/drivers/usb/class/usbtmc.c
> @@ -1460,9 +1460,7 @@ static const struct file_operations fops = {
> .open = usbtmc_open,
> .release = usbtmc_release,
> .unlocked_ioctl = usbtmc_ioctl,
> -#ifdef CONFIG_COMPAT
> - .compat_ioctl = usbtmc_ioctl,
> -#endif
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .fasync = usbtmc_fasync,
> .poll = usbtmc_poll,
> .llseek = default_llseek,
> diff --git a/drivers/video/fbdev/ps3fb.c b/drivers/video/fbdev/ps3fb.c
> index 5ed2db39d823..f9f8ffaf1c4a 100644
> --- a/drivers/video/fbdev/ps3fb.c
> +++ b/drivers/video/fbdev/ps3fb.c
> @@ -949,7 +949,7 @@ static struct fb_ops ps3fb_ops = {
> .fb_mmap = ps3fb_mmap,
> .fb_blank = ps3fb_blank,
> .fb_ioctl = ps3fb_ioctl,
> - .fb_compat_ioctl = ps3fb_ioctl
> + .fb_compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static const struct fb_fix_screeninfo ps3fb_fix = {
> diff --git a/drivers/virt/fsl_hypervisor.c b/drivers/virt/fsl_hypervisor.c
> index 8ba726e600e9..406b7e492214 100644
> --- a/drivers/virt/fsl_hypervisor.c
> +++ b/drivers/virt/fsl_hypervisor.c
> @@ -703,7 +703,7 @@ static const struct file_operations fsl_hv_fops = {
> .poll = fsl_hv_poll,
> .read = fsl_hv_read,
> .unlocked_ioctl = fsl_hv_ioctl,
> - .compat_ioctl = fsl_hv_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static struct miscdevice fsl_hv_misc_dev = {
> diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
> index 6601c9aa5e35..2b5a8ad86305 100644
> --- a/fs/btrfs/super.c
> +++ b/fs/btrfs/super.c
> @@ -2352,7 +2352,7 @@ static const struct super_operations btrfs_super_ops = {
> static const struct file_operations btrfs_ctl_fops = {
> .open = btrfs_control_open,
> .unlocked_ioctl = btrfs_control_ioctl,
> - .compat_ioctl = btrfs_control_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .owner = THIS_MODULE,
> .llseek = noop_llseek,
> };
> diff --git a/fs/ceph/dir.c b/fs/ceph/dir.c
> index da73f29d7faa..eb869fe6774d 100644
> --- a/fs/ceph/dir.c
> +++ b/fs/ceph/dir.c
> @@ -1489,7 +1489,7 @@ const struct file_operations ceph_dir_fops = {
> .open = ceph_open,
> .release = ceph_release,
> .unlocked_ioctl = ceph_ioctl,
> - .compat_ioctl = ceph_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .fsync = ceph_fsync,
> .lock = ceph_lock,
> .flock = ceph_flock,
> diff --git a/fs/ceph/file.c b/fs/ceph/file.c
> index 92ab20433682..85094042cfac 100644
> --- a/fs/ceph/file.c
> +++ b/fs/ceph/file.c
> @@ -1842,7 +1842,7 @@ const struct file_operations ceph_file_fops = {
> .splice_read = generic_file_splice_read,
> .splice_write = iter_file_splice_write,
> .unlocked_ioctl = ceph_ioctl,
> - .compat_ioctl = ceph_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .fallocate = ceph_fallocate,
> };
>
> diff --git a/fs/fuse/dev.c b/fs/fuse/dev.c
> index 11ea2c4a38ab..a6d4a24963ed 100644
> --- a/fs/fuse/dev.c
> +++ b/fs/fuse/dev.c
> @@ -2258,7 +2258,7 @@ const struct file_operations fuse_dev_operations = {
> .release = fuse_dev_release,
> .fasync = fuse_dev_fasync,
> .unlocked_ioctl = fuse_dev_ioctl,
> - .compat_ioctl = fuse_dev_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
> EXPORT_SYMBOL_GPL(fuse_dev_operations);
>
> diff --git a/fs/notify/fanotify/fanotify_user.c b/fs/notify/fanotify/fanotify_user.c
> index 69054886915b..fc4193b384cf 100644
> --- a/fs/notify/fanotify/fanotify_user.c
> +++ b/fs/notify/fanotify/fanotify_user.c
> @@ -447,7 +447,7 @@ static const struct file_operations fanotify_fops = {
> .fasync = NULL,
> .release = fanotify_release,
> .unlocked_ioctl = fanotify_ioctl,
> - .compat_ioctl = fanotify_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .llseek = noop_llseek,
> };
>
> diff --git a/fs/userfaultfd.c b/fs/userfaultfd.c
> index bfa0ec69f924..bc9118b58a8a 100644
> --- a/fs/userfaultfd.c
> +++ b/fs/userfaultfd.c
> @@ -1878,7 +1878,7 @@ static const struct file_operations userfaultfd_fops = {
> .poll = userfaultfd_poll,
> .read = userfaultfd_read,
> .unlocked_ioctl = userfaultfd_ioctl,
> - .compat_ioctl = userfaultfd_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .llseek = noop_llseek,
> };
>
> diff --git a/net/rfkill/core.c b/net/rfkill/core.c
> index 1355f5ca8d22..ba68b53f58ab 100644
> --- a/net/rfkill/core.c
> +++ b/net/rfkill/core.c
> @@ -1323,7 +1323,7 @@ static const struct file_operations rfkill_fops = {
> .release = rfkill_fop_release,
> #ifdef CONFIG_RFKILL_INPUT
> .unlocked_ioctl = rfkill_fop_ioctl,
> - .compat_ioctl = rfkill_fop_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> #endif
> .llseek = no_llseek,
> };
> --
> 2.18.0
>
> _______________________________________________
> dri-devel mailing list
> dri-devel@lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/dri-devel
--
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch
^ permalink raw reply [flat|nested] 141+ messages in thread
* Re: [PATCH v2 05/17] compat_ioctl: move more drivers to generic_compat_ioctl_ptrarg
2018-09-12 15:08 ` Arnd Bergmann
` (3 preceding siblings ...)
(?)
@ 2018-09-12 16:01 ` Mauro Carvalho Chehab
-1 siblings, 0 replies; 141+ messages in thread
From: Mauro Carvalho Chehab @ 2018-09-12 16:01 UTC (permalink / raw)
To: Arnd Bergmann
Cc: viro, linux-fsdevel, Greg Kroah-Hartman, David S. Miller, devel,
linux-kernel, qat-linux, linux-crypto, linux-media, dri-devel,
linaro-mm-sig, amd-gfx, linux-input, linux-iio, linux-rdma,
linux-nvdimm, linux-nvme, linux-pci, platform-driver-x86,
linux-remoteproc, sparclinux, linux-scsi, linux-usb, linux-fbdev,
linuxppc-dev, linux-btrfs, ceph-devel, linux-wireless, netdev
Em Wed, 12 Sep 2018 17:08:52 +0200
Arnd Bergmann <arnd@arndb.de> escreveu:
> The .ioctl and .compat_ioctl file operations have the same prototype so
> they can both point to the same function, which works great almost all
> the time when all the commands are compatible.
>
> One exception is the s390 architecture, where a compat pointer is only
> 31 bit wide, and converting it into a 64-bit pointer requires calling
> compat_ptr(). Most drivers here will ever run in s390, but since we now
> have a generic helper for it, it's easy enough to use it consistently.
>
> I double-checked all these drivers to ensure that all ioctl arguments
> are used as pointers or are ignored, but are not interpreted as integer
> values.
>
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
> ---
> drivers/media/rc/lirc_dev.c | 4 +---
> diff --git a/drivers/media/rc/lirc_dev.c b/drivers/media/rc/lirc_dev.c
> index f862f1b7f996..077209f414ed 100644
> --- a/drivers/media/rc/lirc_dev.c
> +++ b/drivers/media/rc/lirc_dev.c
> @@ -730,9 +730,7 @@ static const struct file_operations lirc_fops = {
> .owner = THIS_MODULE,
> .write = ir_lirc_transmit_ir,
> .unlocked_ioctl = ir_lirc_ioctl,
> -#ifdef CONFIG_COMPAT
> - .compat_ioctl = ir_lirc_ioctl,
> -#endif
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .read = ir_lirc_read,
> .poll = ir_lirc_poll,
> .open = ir_lirc_open,
Adding an infrared remote controller to a s390 mainframe sounds fun :-)
I suspect that one could implement it on a s390 platform
using gpio-ir-recv and/or gpio-ir-tx drivers. Perhaps one possible
practical usage would be to let the mainframe to send remote
controller codes to adjust the air conditioning system ;-)
From lirc driver's PoV, there's nothing that really prevents one to
do that and use lirc API, and the driver is generic enough to work
on any hardware platform.
I didn't check the implementation of generic_compat_ioctl_ptrarg(),
but assuming it is ok,
Acked-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Thanks,
Mauro
^ permalink raw reply [flat|nested] 141+ messages in thread
* Re: [PATCH v2 05/17] compat_ioctl: move more drivers to generic_compat_ioctl_ptrarg
@ 2018-09-12 16:01 ` Mauro Carvalho Chehab
0 siblings, 0 replies; 141+ messages in thread
From: Mauro Carvalho Chehab @ 2018-09-12 16:01 UTC (permalink / raw)
To: Arnd Bergmann
Cc: viro, linux-fsdevel, Greg Kroah-Hartman, David S. Miller, devel,
linux-kernel, qat-linux, linux-crypto, linux-media, dri-devel,
linaro-mm-sig, amd-gfx, linux-input, linux-iio, linux-rdma,
linux-nvdimm, linux-nvme, linux-pci, platform-driver-x86,
linux-remoteproc, sparclinux, linux-scsi, linux-usb, linux-fbdev,
linuxppc-dev, linux-btrfs
Em Wed, 12 Sep 2018 17:08:52 +0200
Arnd Bergmann <arnd@arndb.de> escreveu:
> The .ioctl and .compat_ioctl file operations have the same prototype so
> they can both point to the same function, which works great almost all
> the time when all the commands are compatible.
>
> One exception is the s390 architecture, where a compat pointer is only
> 31 bit wide, and converting it into a 64-bit pointer requires calling
> compat_ptr(). Most drivers here will ever run in s390, but since we now
> have a generic helper for it, it's easy enough to use it consistently.
>
> I double-checked all these drivers to ensure that all ioctl arguments
> are used as pointers or are ignored, but are not interpreted as integer
> values.
>
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
> ---
> drivers/media/rc/lirc_dev.c | 4 +---
> diff --git a/drivers/media/rc/lirc_dev.c b/drivers/media/rc/lirc_dev.c
> index f862f1b7f996..077209f414ed 100644
> --- a/drivers/media/rc/lirc_dev.c
> +++ b/drivers/media/rc/lirc_dev.c
> @@ -730,9 +730,7 @@ static const struct file_operations lirc_fops = {
> .owner = THIS_MODULE,
> .write = ir_lirc_transmit_ir,
> .unlocked_ioctl = ir_lirc_ioctl,
> -#ifdef CONFIG_COMPAT
> - .compat_ioctl = ir_lirc_ioctl,
> -#endif
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .read = ir_lirc_read,
> .poll = ir_lirc_poll,
> .open = ir_lirc_open,
Adding an infrared remote controller to a s390 mainframe sounds fun :-)
I suspect that one could implement it on a s390 platform
using gpio-ir-recv and/or gpio-ir-tx drivers. Perhaps one possible
practical usage would be to let the mainframe to send remote
controller codes to adjust the air conditioning system ;-)
From lirc driver's PoV, there's nothing that really prevents one to
do that and use lirc API, and the driver is generic enough to work
on any hardware platform.
I didn't check the implementation of generic_compat_ioctl_ptrarg(),
but assuming it is ok,
Acked-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Thanks,
Mauro
^ permalink raw reply [flat|nested] 141+ messages in thread
* [v2,05/17] compat_ioctl: move more drivers to generic_compat_ioctl_ptrarg
@ 2018-09-12 16:01 ` Mauro Carvalho Chehab
0 siblings, 0 replies; 141+ messages in thread
From: Mauro Carvalho Chehab @ 2018-09-12 16:01 UTC (permalink / raw)
To: Arnd Bergmann
Cc: viro, linux-fsdevel, Greg Kroah-Hartman, David S. Miller, devel,
linux-kernel, qat-linux, linux-crypto, linux-media, dri-devel,
linaro-mm-sig, amd-gfx, linux-input, linux-iio, linux-rdma,
linux-nvdimm, linux-nvme, linux-pci, platform-driver-x86,
linux-remoteproc, sparclinux, linux-scsi, linux-usb, linux-fbdev,
linuxppc-dev, linux-btrfs, ceph-devel, linux-wireless, netdev
Em Wed, 12 Sep 2018 17:08:52 +0200
Arnd Bergmann <arnd@arndb.de> escreveu:
> The .ioctl and .compat_ioctl file operations have the same prototype so
> they can both point to the same function, which works great almost all
> the time when all the commands are compatible.
>
> One exception is the s390 architecture, where a compat pointer is only
> 31 bit wide, and converting it into a 64-bit pointer requires calling
> compat_ptr(). Most drivers here will ever run in s390, but since we now
> have a generic helper for it, it's easy enough to use it consistently.
>
> I double-checked all these drivers to ensure that all ioctl arguments
> are used as pointers or are ignored, but are not interpreted as integer
> values.
>
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
> ---
> drivers/media/rc/lirc_dev.c | 4 +---
> diff --git a/drivers/media/rc/lirc_dev.c b/drivers/media/rc/lirc_dev.c
> index f862f1b7f996..077209f414ed 100644
> --- a/drivers/media/rc/lirc_dev.c
> +++ b/drivers/media/rc/lirc_dev.c
> @@ -730,9 +730,7 @@ static const struct file_operations lirc_fops = {
> .owner = THIS_MODULE,
> .write = ir_lirc_transmit_ir,
> .unlocked_ioctl = ir_lirc_ioctl,
> -#ifdef CONFIG_COMPAT
> - .compat_ioctl = ir_lirc_ioctl,
> -#endif
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .read = ir_lirc_read,
> .poll = ir_lirc_poll,
> .open = ir_lirc_open,
Adding an infrared remote controller to a s390 mainframe sounds fun :-)
I suspect that one could implement it on a s390 platform
using gpio-ir-recv and/or gpio-ir-tx drivers. Perhaps one possible
practical usage would be to let the mainframe to send remote
controller codes to adjust the air conditioning system ;-)
From lirc driver's PoV, there's nothing that really prevents one to
do that and use lirc API, and the driver is generic enough to work
on any hardware platform.
I didn't check the implementation of generic_compat_ioctl_ptrarg(),
but assuming it is ok,
Acked-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Thanks,
Mauro
^ permalink raw reply [flat|nested] 141+ messages in thread
* Re: [PATCH v2 05/17] compat_ioctl: move more drivers to generic_compat_ioctl_ptrarg
@ 2018-09-12 16:01 ` Mauro Carvalho Chehab
0 siblings, 0 replies; 141+ messages in thread
From: Mauro Carvalho Chehab @ 2018-09-12 16:01 UTC (permalink / raw)
To: Arnd Bergmann
Cc: viro, linux-fsdevel, Greg Kroah-Hartman, David S. Miller, devel,
linux-kernel, qat-linux, linux-crypto, linux-media, dri-devel,
linaro-mm-sig, amd-gfx, linux-input, linux-iio, linux-rdma,
linux-nvdimm, linux-nvme, linux-pci, platform-driver-x86,
linux-remoteproc, sparclinux, linux-scsi, linux-usb, linux-fbdev,
linuxppc-dev, linux-btrfs, ceph-devel, linux-wireless, netdev
Em Wed, 12 Sep 2018 17:08:52 +0200
Arnd Bergmann <arnd@arndb.de> escreveu:
> The .ioctl and .compat_ioctl file operations have the same prototype so
> they can both point to the same function, which works great almost all
> the time when all the commands are compatible.
>
> One exception is the s390 architecture, where a compat pointer is only
> 31 bit wide, and converting it into a 64-bit pointer requires calling
> compat_ptr(). Most drivers here will ever run in s390, but since we now
> have a generic helper for it, it's easy enough to use it consistently.
>
> I double-checked all these drivers to ensure that all ioctl arguments
> are used as pointers or are ignored, but are not interpreted as integer
> values.
>
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
> ---
> drivers/media/rc/lirc_dev.c | 4 +---
> diff --git a/drivers/media/rc/lirc_dev.c b/drivers/media/rc/lirc_dev.c
> index f862f1b7f996..077209f414ed 100644
> --- a/drivers/media/rc/lirc_dev.c
> +++ b/drivers/media/rc/lirc_dev.c
> @@ -730,9 +730,7 @@ static const struct file_operations lirc_fops = {
> .owner = THIS_MODULE,
> .write = ir_lirc_transmit_ir,
> .unlocked_ioctl = ir_lirc_ioctl,
> -#ifdef CONFIG_COMPAT
> - .compat_ioctl = ir_lirc_ioctl,
> -#endif
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .read = ir_lirc_read,
> .poll = ir_lirc_poll,
> .open = ir_lirc_open,
Adding an infrared remote controller to a s390 mainframe sounds fun :-)
I suspect that one could implement it on a s390 platform
using gpio-ir-recv and/or gpio-ir-tx drivers. Perhaps one possible
practical usage would be to let the mainframe to send remote
controller codes to adjust the air conditioning system ;-)
>From lirc driver's PoV, there's nothing that really prevents one to
do that and use lirc API, and the driver is generic enough to work
on any hardware platform.
I didn't check the implementation of generic_compat_ioctl_ptrarg(),
but assuming it is ok,
Acked-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Thanks,
Mauro
^ permalink raw reply [flat|nested] 141+ messages in thread
* Re: [PATCH v2 05/17] compat_ioctl: move more drivers to generic_compat_ioctl_ptrarg
@ 2018-09-12 16:01 ` Mauro Carvalho Chehab
0 siblings, 0 replies; 141+ messages in thread
From: Mauro Carvalho Chehab @ 2018-09-12 16:01 UTC (permalink / raw)
To: Arnd Bergmann
Cc: viro, linux-fsdevel, Greg Kroah-Hartman, David S. Miller, devel,
linux-kernel, qat-linux, linux-crypto, linux-media, dri-devel,
linaro-mm-sig, amd-gfx, linux-input, linux-iio, linux-rdma,
linux-nvdimm, linux-nvme, linux-pci, platform-driver-x86,
linux-remoteproc, sparclinux, linux-scsi, linux-usb, linux-fbdev,
linuxppc-dev, linux-btrfs
Em Wed, 12 Sep 2018 17:08:52 +0200
Arnd Bergmann <arnd@arndb.de> escreveu:
> The .ioctl and .compat_ioctl file operations have the same prototype so
> they can both point to the same function, which works great almost all
> the time when all the commands are compatible.
>
> One exception is the s390 architecture, where a compat pointer is only
> 31 bit wide, and converting it into a 64-bit pointer requires calling
> compat_ptr(). Most drivers here will ever run in s390, but since we now
> have a generic helper for it, it's easy enough to use it consistently.
>
> I double-checked all these drivers to ensure that all ioctl arguments
> are used as pointers or are ignored, but are not interpreted as integer
> values.
>
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
> ---
> drivers/media/rc/lirc_dev.c | 4 +---
> diff --git a/drivers/media/rc/lirc_dev.c b/drivers/media/rc/lirc_dev.c
> index f862f1b7f996..077209f414ed 100644
> --- a/drivers/media/rc/lirc_dev.c
> +++ b/drivers/media/rc/lirc_dev.c
> @@ -730,9 +730,7 @@ static const struct file_operations lirc_fops = {
> .owner = THIS_MODULE,
> .write = ir_lirc_transmit_ir,
> .unlocked_ioctl = ir_lirc_ioctl,
> -#ifdef CONFIG_COMPAT
> - .compat_ioctl = ir_lirc_ioctl,
> -#endif
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> .read = ir_lirc_read,
> .poll = ir_lirc_poll,
> .open = ir_lirc_open,
Adding an infrared remote controller to a s390 mainframe sounds fun :-)
I suspect that one could implement it on a s390 platform
using gpio-ir-recv and/or gpio-ir-tx drivers. Perhaps one possible
practical usage would be to let the mainframe to send remote
controller codes to adjust the air conditioning system ;-)
From lirc driver's PoV, there's nothing that really prevents one to
do that and use lirc API, and the driver is generic enough to work
on any hardware platform.
I didn't check the implementation of generic_compat_ioctl_ptrarg(),
but assuming it is ok,
Acked-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Thanks,
Mauro
^ permalink raw reply [flat|nested] 141+ messages in thread
* Re: [PATCH v2 05/17] compat_ioctl: move more drivers to generic_compat_ioctl_ptrarg
@ 2018-09-12 16:01 ` Mauro Carvalho Chehab
0 siblings, 0 replies; 141+ messages in thread
From: Mauro Carvalho Chehab @ 2018-09-12 16:01 UTC (permalink / raw)
To: Arnd Bergmann
Cc: viro, linux-fsdevel, Greg Kroah-Hartman, David S. Miller, devel,
linux-kernel, qat-linux, linux-crypto, linux-media, dri-devel,
linaro-mm-sig, amd-gfx, linux-input, linux-iio, linux-rdma,
linux-nvdimm, linux-nvme, linux-pci, platform-driver-x86,
linux-remoteproc, sparclinux, linux-scsi, linux-usb, linux-fbdev,
linuxppc-dev, linux-btrfs, ceph-devel, linux-wireless, netdev
Em Wed, 12 Sep 2018 17:08:52 +0200
Arnd Bergmann <arnd@arndb.de> escreveu:
> The .ioctl and .compat_ioctl file operations have the same prototype so
> they can both point to the same function, which works great almost all
> the time when all the commands are compatible.
>=20
> One exception is the s390 architecture, where a compat pointer is only
> 31 bit wide, and converting it into a 64-bit pointer requires calling
> compat_ptr(). Most drivers here will ever run in s390, but since we now
> have a generic helper for it, it's easy enough to use it consistently.
>=20
> I double-checked all these drivers to ensure that all ioctl arguments
> are used as pointers or are ignored, but are not interpreted as integer
> values.
>=20
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
> ---
> drivers/media/rc/lirc_dev.c | 4 +---
> diff --git a/drivers/media/rc/lirc_dev.c b/drivers/media/rc/lirc_dev.c
> index f862f1b7f996..077209f414ed 100644
> --- a/drivers/media/rc/lirc_dev.c
> +++ b/drivers/media/rc/lirc_dev.c
> @@ -730,9 +730,7 @@ static const struct file_operations lirc_fops =3D {
> .owner =3D THIS_MODULE,
> .write =3D ir_lirc_transmit_ir,
> .unlocked_ioctl =3D ir_lirc_ioctl,
> -#ifdef CONFIG_COMPAT
> - .compat_ioctl =3D ir_lirc_ioctl,
> -#endif
> + .compat_ioctl =3D generic_compat_ioctl_ptrarg,
> .read =3D ir_lirc_read,
> .poll =3D ir_lirc_poll,
> .open =3D ir_lirc_open,
Adding an infrared remote controller to a s390 mainframe sounds fun :-)
I suspect that one could implement it on a s390 platform=20
using gpio-ir-recv and/or gpio-ir-tx drivers. Perhaps one possible
practical usage would be to let the mainframe to send remote
controller codes to adjust the air conditioning system ;-)
=46rom lirc driver's PoV, there's nothing that really prevents one to
do that and use lirc API, and the driver is generic enough to work
on any hardware platform.
I didn't check the implementation of generic_compat_ioctl_ptrarg(),
but assuming it is ok,
Acked-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Thanks,
Mauro
^ permalink raw reply [flat|nested] 141+ messages in thread
* Re: [PATCH v2 05/17] compat_ioctl: move more drivers to generic_compat_ioctl_ptrarg
2018-09-12 15:08 ` Arnd Bergmann
` (4 preceding siblings ...)
(?)
@ 2018-09-12 18:13 ` Greg Kroah-Hartman
-1 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2018-09-12 18:13 UTC (permalink / raw)
To: Arnd Bergmann
Cc: linux-fbdev, linux-iio, linux-pci, linux-remoteproc, linux-nvme,
platform-driver-x86, sparclinux, devel, linux-scsi, linux-nvdimm,
linux-rdma, qat-linux, amd-gfx, linux-input, linux-media,
linaro-mm-sig, dri-devel, ceph-devel, netdev, linux-usb,
linux-wireless, linux-kernel, linux-crypto, linux-fsdevel,
linuxppc-dev, David S. Miller, linux-btrfs, viro
On Wed, Sep 12, 2018 at 05:08:52PM +0200, Arnd Bergmann wrote:
> The .ioctl and .compat_ioctl file operations have the same prototype so
> they can both point to the same function, which works great almost all
> the time when all the commands are compatible.
>
> One exception is the s390 architecture, where a compat pointer is only
> 31 bit wide, and converting it into a 64-bit pointer requires calling
> compat_ptr(). Most drivers here will ever run in s390, but since we now
> have a generic helper for it, it's easy enough to use it consistently.
>
> I double-checked all these drivers to ensure that all ioctl arguments
> are used as pointers or are ignored, but are not interpreted as integer
> values.
>
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
_______________________________________________
Linux-nvdimm mailing list
Linux-nvdimm@lists.01.org
https://lists.01.org/mailman/listinfo/linux-nvdimm
^ permalink raw reply [flat|nested] 141+ messages in thread
* [PATCH v2 05/17] compat_ioctl: move more drivers to generic_compat_ioctl_ptrarg
@ 2018-09-12 18:13 ` Greg Kroah-Hartman
0 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2018-09-12 18:13 UTC (permalink / raw)
On Wed, Sep 12, 2018@05:08:52PM +0200, Arnd Bergmann wrote:
> The .ioctl and .compat_ioctl file operations have the same prototype so
> they can both point to the same function, which works great almost all
> the time when all the commands are compatible.
>
> One exception is the s390 architecture, where a compat pointer is only
> 31 bit wide, and converting it into a 64-bit pointer requires calling
> compat_ptr(). Most drivers here will ever run in s390, but since we now
> have a generic helper for it, it's easy enough to use it consistently.
>
> I double-checked all these drivers to ensure that all ioctl arguments
> are used as pointers or are ignored, but are not interpreted as integer
> values.
>
> Signed-off-by: Arnd Bergmann <arnd at arndb.de>
Acked-by: Greg Kroah-Hartman <gregkh at linuxfoundation.org>
^ permalink raw reply [flat|nested] 141+ messages in thread
* Re: [PATCH v2 05/17] compat_ioctl: move more drivers to generic_compat_ioctl_ptrarg
@ 2018-09-12 18:13 ` Greg Kroah-Hartman
0 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2018-09-12 18:13 UTC (permalink / raw)
To: Arnd Bergmann
Cc: linux-fbdev-u79uwXL29TY76Z2rM5mHXA,
linux-iio-u79uwXL29TY76Z2rM5mHXA,
linux-pci-u79uwXL29TY76Z2rM5mHXA,
linux-remoteproc-u79uwXL29TY76Z2rM5mHXA,
linux-nvme-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
platform-driver-x86-u79uwXL29TY76Z2rM5mHXA,
sparclinux-u79uwXL29TY76Z2rM5mHXA,
devel-gWbeCf7V1WCQmaza687I9mD2FQJk+8+b,
linux-scsi-u79uwXL29TY76Z2rM5mHXA,
linux-nvdimm-hn68Rpc1hR1g9hUCZPvPmw,
linux-rdma-u79uwXL29TY76Z2rM5mHXA,
qat-linux-ral2JQCrhuEAvxtiuMwx3w,
amd-gfx-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW,
linux-input-u79uwXL29TY76Z2rM5mHXA,
linux-media-u79uwXL29TY76Z2rM5mHXA,
linaro-mm-sig-cunTk1MwBs8s++Sfvej+rw,
dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW,
ceph-devel-u79uwXL29TY76Z2rM5mHXA, netdev-u79uwXL29TY76Z2rM5mHXA,
linux-usb-u79uwXL29TY76Z2rM5mHXA,
linux-wireless-u79uwXL29TY76Z2rM5mHXA,
linux-kernel-u79uwXL29TY76Z2rM5mHXA,
linux-crypto-u79uwXL29TY76Z2rM5mHXA,
linux-fsdevel-u79uwXL29TY76Z2rM5mHXA,
linuxppc-dev-uLR06cmDAlY/bJ5BZ2RsiQ, David S. Miller,
linux-btrfs-u79uwXL29TY76Z2rM5mHXA,
viro-RmSDqhL/yNMiFSDQTTA3OLVCufUGDwFn
On Wed, Sep 12, 2018 at 05:08:52PM +0200, Arnd Bergmann wrote:
> The .ioctl and .compat_ioctl file operations have the same prototype so
> they can both point to the same function, which works great almost all
> the time when all the commands are compatible.
>
> One exception is the s390 architecture, where a compat pointer is only
> 31 bit wide, and converting it into a 64-bit pointer requires calling
> compat_ptr(). Most drivers here will ever run in s390, but since we now
> have a generic helper for it, it's easy enough to use it consistently.
>
> I double-checked all these drivers to ensure that all ioctl arguments
> are used as pointers or are ignored, but are not interpreted as integer
> values.
>
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
^ permalink raw reply [flat|nested] 141+ messages in thread
* [v2,05/17] compat_ioctl: move more drivers to generic_compat_ioctl_ptrarg
@ 2018-09-12 18:13 ` Greg Kroah-Hartman
0 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2018-09-12 18:13 UTC (permalink / raw)
To: Arnd Bergmann
Cc: viro, linux-fsdevel, David S. Miller, devel, linux-kernel,
qat-linux, linux-crypto, linux-media, dri-devel, linaro-mm-sig,
amd-gfx, linux-input, linux-iio, linux-rdma, linux-nvdimm,
linux-nvme, linux-pci, platform-driver-x86, linux-remoteproc,
sparclinux, linux-scsi, linux-usb, linux-fbdev, linuxppc-dev,
linux-btrfs, ceph-devel, linux-wireless, netdev
On Wed, Sep 12, 2018 at 05:08:52PM +0200, Arnd Bergmann wrote:
> The .ioctl and .compat_ioctl file operations have the same prototype so
> they can both point to the same function, which works great almost all
> the time when all the commands are compatible.
>
> One exception is the s390 architecture, where a compat pointer is only
> 31 bit wide, and converting it into a 64-bit pointer requires calling
> compat_ptr(). Most drivers here will ever run in s390, but since we now
> have a generic helper for it, it's easy enough to use it consistently.
>
> I double-checked all these drivers to ensure that all ioctl arguments
> are used as pointers or are ignored, but are not interpreted as integer
> values.
>
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
^ permalink raw reply [flat|nested] 141+ messages in thread
* Re: [PATCH v2 05/17] compat_ioctl: move more drivers to generic_compat_ioctl_ptrarg
@ 2018-09-12 18:13 ` Greg Kroah-Hartman
0 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2018-09-12 18:13 UTC (permalink / raw)
To: Arnd Bergmann
Cc: linux-fbdev, linux-iio, linux-pci, linux-remoteproc, linux-nvme,
platform-driver-x86, sparclinux, devel, linux-scsi, linux-nvdimm,
linux-rdma, qat-linux, amd-gfx, linux-input, linux-media,
linaro-mm-sig, dri-devel, ceph-devel, netdev, linux-usb,
linux-wireless, linux-kernel, linux-crypto, linux-fsdevel,
linuxppc-dev, David S. Miller, linux-btrfs, viro
On Wed, Sep 12, 2018 at 05:08:52PM +0200, Arnd Bergmann wrote:
> The .ioctl and .compat_ioctl file operations have the same prototype so
> they can both point to the same function, which works great almost all
> the time when all the commands are compatible.
>
> One exception is the s390 architecture, where a compat pointer is only
> 31 bit wide, and converting it into a 64-bit pointer requires calling
> compat_ptr(). Most drivers here will ever run in s390, but since we now
> have a generic helper for it, it's easy enough to use it consistently.
>
> I double-checked all these drivers to ensure that all ioctl arguments
> are used as pointers or are ignored, but are not interpreted as integer
> values.
>
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
_______________________________________________
Linux-nvme mailing list
Linux-nvme@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-nvme
^ permalink raw reply [flat|nested] 141+ messages in thread
* Re: [PATCH v2 05/17] compat_ioctl: move more drivers to generic_compat_ioctl_ptrarg
@ 2018-09-12 18:13 ` Greg Kroah-Hartman
0 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2018-09-12 18:13 UTC (permalink / raw)
To: Arnd Bergmann
Cc: linux-fbdev-u79uwXL29TY76Z2rM5mHXA,
linux-iio-u79uwXL29TY76Z2rM5mHXA,
linux-pci-u79uwXL29TY76Z2rM5mHXA,
linux-remoteproc-u79uwXL29TY76Z2rM5mHXA,
linux-nvme-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
platform-driver-x86-u79uwXL29TY76Z2rM5mHXA,
sparclinux-u79uwXL29TY76Z2rM5mHXA,
devel-gWbeCf7V1WCQmaza687I9mD2FQJk+8+b,
linux-scsi-u79uwXL29TY76Z2rM5mHXA,
linux-nvdimm-hn68Rpc1hR1g9hUCZPvPmw,
linux-rdma-u79uwXL29TY76Z2rM5mHXA,
qat-linux-ral2JQCrhuEAvxtiuMwx3w,
amd-gfx-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW,
linux-input-u79uwXL29TY76Z2rM5mHXA,
linux-media-u79uwXL29TY76Z2rM5mHXA,
linaro-mm-sig-cunTk1MwBs8s++Sfvej+rw,
dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW,
ceph-devel-u79uwXL29TY76Z2rM5mHXA, netdev-u79uwXL29TY76Z2rM5mHXA,
linux-usb-u79uwXL29TY76Z2rM5mHXA,
linux-wireless-u79uwXL29TY76Z2rM5mHXA,
linux-kernel-u79uwXL29TY76Z2rM5mHXA,
linux-crypto-u79uwXL29TY76Z2rM5mHXA,
linux-fsdevel-u79uwXL29TY76Z2rM5mHXA,
linuxppc-dev-uLR06cmDAlY/bJ5BZ2RsiQ, David S. Miller,
linux-btrfs-u79uwXL29TY76Z2rM5mHXA,
viro-RmSDqhL/yNMiFSDQTTA3OLVCufUGDwFn
On Wed, Sep 12, 2018 at 05:08:52PM +0200, Arnd Bergmann wrote:
> The .ioctl and .compat_ioctl file operations have the same prototype so
> they can both point to the same function, which works great almost all
> the time when all the commands are compatible.
>
> One exception is the s390 architecture, where a compat pointer is only
> 31 bit wide, and converting it into a 64-bit pointer requires calling
> compat_ptr(). Most drivers here will ever run in s390, but since we now
> have a generic helper for it, it's easy enough to use it consistently.
>
> I double-checked all these drivers to ensure that all ioctl arguments
> are used as pointers or are ignored, but are not interpreted as integer
> values.
>
> Signed-off-by: Arnd Bergmann <arnd-r2nGTMty4D4@public.gmane.org>
Acked-by: Greg Kroah-Hartman <gregkh-hQyY1W1yCW8ekmWlsbkhG0B+6BGkLq7r@public.gmane.org>
^ permalink raw reply [flat|nested] 141+ messages in thread
* Re: [PATCH v2 05/17] compat_ioctl: move more drivers to generic_compat_ioctl_ptrarg
@ 2018-09-12 18:13 ` Greg Kroah-Hartman
0 siblings, 0 replies; 141+ messages in thread
From: Greg Kroah-Hartman @ 2018-09-12 18:13 UTC (permalink / raw)
To: Arnd Bergmann
Cc: viro, linux-fsdevel, David S. Miller, devel, linux-kernel,
qat-linux, linux-crypto, linux-media, dri-devel, linaro-mm-sig,
amd-gfx, linux-input, linux-iio, linux-rdma, linux-nvdimm,
linux-nvme, linux-pci, platform-driver-x86, linux-remoteproc,
sparclinux, linux-scsi, linux-usb, linux-fbdev, linuxppc-dev,
linux-btrfs, ceph-devel, linux-wireless, netdev
On Wed, Sep 12, 2018 at 05:08:52PM +0200, Arnd Bergmann wrote:
> The .ioctl and .compat_ioctl file operations have the same prototype so
> they can both point to the same function, which works great almost all
> the time when all the commands are compatible.
>
> One exception is the s390 architecture, where a compat pointer is only
> 31 bit wide, and converting it into a 64-bit pointer requires calling
> compat_ptr(). Most drivers here will ever run in s390, but since we now
> have a generic helper for it, it's easy enough to use it consistently.
>
> I double-checked all these drivers to ensure that all ioctl arguments
> are used as pointers or are ignored, but are not interpreted as integer
> values.
>
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
^ permalink raw reply [flat|nested] 141+ messages in thread
* Re: [PATCH v2 05/17] compat_ioctl: move more drivers to generic_compat_ioctl_ptrarg
2018-09-12 15:08 ` Arnd Bergmann
` (2 preceding siblings ...)
(?)
@ 2018-09-14 14:23 ` David Sterba
-1 siblings, 0 replies; 141+ messages in thread
From: David Sterba @ 2018-09-14 14:23 UTC (permalink / raw)
To: Arnd Bergmann
Cc: linux-fbdev, linux-iio, linux-pci, linux-remoteproc, linux-nvme,
platform-driver-x86, sparclinux, devel, linux-scsi, linux-nvdimm,
linux-rdma, qat-linux, amd-gfx, linux-input, linux-media,
linaro-mm-sig, dri-devel, ceph-devel, Greg Kroah-Hartman,
linux-usb, linux-wireless, linux-kernel, linux-crypto, netdev,
linux-fsdevel, linuxppc-dev, David S. Miller, linux-btrfs, viro
On Wed, Sep 12, 2018 at 05:08:52PM +0200, Arnd Bergmann wrote:
> The .ioctl and .compat_ioctl file operations have the same prototype so
> they can both point to the same function, which works great almost all
> the time when all the commands are compatible.
>
> One exception is the s390 architecture, where a compat pointer is only
> 31 bit wide, and converting it into a 64-bit pointer requires calling
> compat_ptr(). Most drivers here will ever run in s390, but since we now
> have a generic helper for it, it's easy enough to use it consistently.
>
> I double-checked all these drivers to ensure that all ioctl arguments
> are used as pointers or are ignored, but are not interpreted as integer
> values.
>
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
> ---
> fs/btrfs/super.c | 2 +-
Acked-by: David Sterba <dsterba@suse.com>
_______________________________________________
Linux-nvdimm mailing list
Linux-nvdimm@lists.01.org
https://lists.01.org/mailman/listinfo/linux-nvdimm
^ permalink raw reply [flat|nested] 141+ messages in thread
* Re: [PATCH v2 05/17] compat_ioctl: move more drivers to generic_compat_ioctl_ptrarg
@ 2018-09-14 14:23 ` David Sterba
0 siblings, 0 replies; 141+ messages in thread
From: David Sterba @ 2018-09-14 14:23 UTC (permalink / raw)
To: Arnd Bergmann
Cc: linux-fbdev-u79uwXL29TY76Z2rM5mHXA,
linux-iio-u79uwXL29TY76Z2rM5mHXA,
linux-pci-u79uwXL29TY76Z2rM5mHXA,
linux-remoteproc-u79uwXL29TY76Z2rM5mHXA,
linux-nvme-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
platform-driver-x86-u79uwXL29TY76Z2rM5mHXA,
sparclinux-u79uwXL29TY76Z2rM5mHXA,
devel-gWbeCf7V1WCQmaza687I9mD2FQJk+8+b,
linux-scsi-u79uwXL29TY76Z2rM5mHXA,
linux-nvdimm-hn68Rpc1hR1g9hUCZPvPmw,
linux-rdma-u79uwXL29TY76Z2rM5mHXA,
qat-linux-ral2JQCrhuEAvxtiuMwx3w,
amd-gfx-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW,
linux-input-u79uwXL29TY76Z2rM5mHXA,
linux-media-u79uwXL29TY76Z2rM5mHXA,
linaro-mm-sig-cunTk1MwBs8s++Sfvej+rw,
dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW,
ceph-devel-u79uwXL29TY76Z2rM5mHXA, Greg Kroah-Hartman,
linux-usb-u79uwXL29TY76Z2rM5mHXA,
linux-wireless-u79uwXL29TY76Z2rM5mHXA,
linux-kernel-u79uwXL29TY76Z2rM5mHXA,
linux-crypto-u79uwXL29TY76Z2rM5mHXA,
netdev-u79uwXL29TY76Z2rM5mHXA,
linux-fsdevel-u79uwXL29TY76Z2rM5mHXA,
linuxppc-dev-uLR06cmDAlY/bJ5BZ2RsiQ, David S. Miller,
linux-btrfs-u79uwXL29TY76Z2rM5mHXA,
viro-RmSDqhL/yNMiFSDQTTA3OLVCufUGDwFn
On Wed, Sep 12, 2018 at 05:08:52PM +0200, Arnd Bergmann wrote:
> The .ioctl and .compat_ioctl file operations have the same prototype so
> they can both point to the same function, which works great almost all
> the time when all the commands are compatible.
>
> One exception is the s390 architecture, where a compat pointer is only
> 31 bit wide, and converting it into a 64-bit pointer requires calling
> compat_ptr(). Most drivers here will ever run in s390, but since we now
> have a generic helper for it, it's easy enough to use it consistently.
>
> I double-checked all these drivers to ensure that all ioctl arguments
> are used as pointers or are ignored, but are not interpreted as integer
> values.
>
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
> ---
> fs/btrfs/super.c | 2 +-
Acked-by: David Sterba <dsterba@suse.com>
^ permalink raw reply [flat|nested] 141+ messages in thread
* [v2,05/17] compat_ioctl: move more drivers to generic_compat_ioctl_ptrarg
@ 2018-09-14 14:23 ` David Sterba
0 siblings, 0 replies; 141+ messages in thread
From: David Sterba @ 2018-09-14 14:23 UTC (permalink / raw)
To: Arnd Bergmann
Cc: viro, linux-fsdevel, Greg Kroah-Hartman, David S. Miller, devel,
linux-kernel, qat-linux, linux-crypto, linux-media, dri-devel,
linaro-mm-sig, amd-gfx, linux-input, linux-iio, linux-rdma,
linux-nvdimm, linux-nvme, linux-pci, platform-driver-x86,
linux-remoteproc, sparclinux, linux-scsi, linux-usb, linux-fbdev,
linuxppc-dev, linux-btrfs, ceph-devel, linux-wireless, netdev
On Wed, Sep 12, 2018 at 05:08:52PM +0200, Arnd Bergmann wrote:
> The .ioctl and .compat_ioctl file operations have the same prototype so
> they can both point to the same function, which works great almost all
> the time when all the commands are compatible.
>
> One exception is the s390 architecture, where a compat pointer is only
> 31 bit wide, and converting it into a 64-bit pointer requires calling
> compat_ptr(). Most drivers here will ever run in s390, but since we now
> have a generic helper for it, it's easy enough to use it consistently.
>
> I double-checked all these drivers to ensure that all ioctl arguments
> are used as pointers or are ignored, but are not interpreted as integer
> values.
>
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
> ---
> fs/btrfs/super.c | 2 +-
Acked-by: David Sterba <dsterba@suse.com>
^ permalink raw reply [flat|nested] 141+ messages in thread
* Re: [PATCH v2 05/17] compat_ioctl: move more drivers to generic_compat_ioctl_ptrarg
@ 2018-09-14 14:23 ` David Sterba
0 siblings, 0 replies; 141+ messages in thread
From: David Sterba @ 2018-09-14 14:23 UTC (permalink / raw)
To: Arnd Bergmann
Cc: linux-fbdev-u79uwXL29TY76Z2rM5mHXA,
linux-iio-u79uwXL29TY76Z2rM5mHXA,
linux-pci-u79uwXL29TY76Z2rM5mHXA,
linux-remoteproc-u79uwXL29TY76Z2rM5mHXA,
linux-nvme-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
platform-driver-x86-u79uwXL29TY76Z2rM5mHXA,
sparclinux-u79uwXL29TY76Z2rM5mHXA,
devel-gWbeCf7V1WCQmaza687I9mD2FQJk+8+b,
linux-scsi-u79uwXL29TY76Z2rM5mHXA,
linux-nvdimm-hn68Rpc1hR1g9hUCZPvPmw,
linux-rdma-u79uwXL29TY76Z2rM5mHXA,
qat-linux-ral2JQCrhuEAvxtiuMwx3w,
amd-gfx-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW,
linux-input-u79uwXL29TY76Z2rM5mHXA,
linux-media-u79uwXL29TY76Z2rM5mHXA,
linaro-mm-sig-cunTk1MwBs8s++Sfvej+rw,
dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW,
ceph-devel-u79uwXL29TY76Z2rM5mHXA, Greg Kroah-Hartman,
linux-usb-u79uwXL29TY76Z2rM5mHXA,
linux-wireless-u79uwXL29TY76Z2rM5mHXA,
linux-kernel-u79uwXL29TY76Z2rM5mHXA,
linux-crypto-u79uwXL29TY76Z2rM5mHXA,
netdev-u79uwXL29TY76Z2rM5mHXA,
linux-fsdevel-u79uwXL29TY76Z2rM5mHXA,
linuxppc-dev-uLR06cmDAlY/bJ5BZ2RsiQ, David S. Miller,
linux-btrfs-u79uwXL29TY76Z2rM5mHXA,
viro-RmSDqhL/yNMiFSDQTTA3OLVCufUGDwFn
On Wed, Sep 12, 2018 at 05:08:52PM +0200, Arnd Bergmann wrote:
> The .ioctl and .compat_ioctl file operations have the same prototype so
> they can both point to the same function, which works great almost all
> the time when all the commands are compatible.
>
> One exception is the s390 architecture, where a compat pointer is only
> 31 bit wide, and converting it into a 64-bit pointer requires calling
> compat_ptr(). Most drivers here will ever run in s390, but since we now
> have a generic helper for it, it's easy enough to use it consistently.
>
> I double-checked all these drivers to ensure that all ioctl arguments
> are used as pointers or are ignored, but are not interpreted as integer
> values.
>
> Signed-off-by: Arnd Bergmann <arnd-r2nGTMty4D4@public.gmane.org>
> ---
> fs/btrfs/super.c | 2 +-
Acked-by: David Sterba <dsterba-IBi9RG/b67k@public.gmane.org>
^ permalink raw reply [flat|nested] 141+ messages in thread
* Re: [PATCH v2 05/17] compat_ioctl: move more drivers to generic_compat_ioctl_ptrarg
@ 2018-09-14 14:23 ` David Sterba
0 siblings, 0 replies; 141+ messages in thread
From: David Sterba @ 2018-09-14 14:23 UTC (permalink / raw)
To: Arnd Bergmann
Cc: viro, linux-fsdevel, Greg Kroah-Hartman, David S. Miller, devel,
linux-kernel, qat-linux, linux-crypto, linux-media, dri-devel,
linaro-mm-sig, amd-gfx, linux-input, linux-iio, linux-rdma,
linux-nvdimm, linux-nvme, linux-pci, platform-driver-x86,
linux-remoteproc, sparclinux, linux-scsi, linux-usb, linux-fbdev,
linuxppc-dev, linux-btrfs, ceph-devel, linux-wireless, netdev
On Wed, Sep 12, 2018 at 05:08:52PM +0200, Arnd Bergmann wrote:
> The .ioctl and .compat_ioctl file operations have the same prototype so
> they can both point to the same function, which works great almost all
> the time when all the commands are compatible.
>
> One exception is the s390 architecture, where a compat pointer is only
> 31 bit wide, and converting it into a 64-bit pointer requires calling
> compat_ptr(). Most drivers here will ever run in s390, but since we now
> have a generic helper for it, it's easy enough to use it consistently.
>
> I double-checked all these drivers to ensure that all ioctl arguments
> are used as pointers or are ignored, but are not interpreted as integer
> values.
>
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
> ---
> fs/btrfs/super.c | 2 +-
Acked-by: David Sterba <dsterba@suse.com>
^ permalink raw reply [flat|nested] 141+ messages in thread
* Re: [PATCH v2 05/17] compat_ioctl: move more drivers to generic_compat_ioctl_ptrarg
2018-09-12 15:08 ` Arnd Bergmann
` (2 preceding siblings ...)
(?)
@ 2018-09-14 20:35 ` Darren Hart
-1 siblings, 0 replies; 141+ messages in thread
From: Darren Hart @ 2018-09-14 20:35 UTC (permalink / raw)
To: Arnd Bergmann
Cc: linux-fbdev, linux-iio, linux-pci, linux-remoteproc, linux-nvme,
platform-driver-x86, sparclinux, devel, linux-scsi, linux-nvdimm,
linux-rdma, qat-linux, amd-gfx, linux-input, linux-media,
linaro-mm-sig, dri-devel, ceph-devel, Greg Kroah-Hartman,
linux-usb, linux-wireless, linux-kernel, linux-crypto, netdev,
linux-fsdevel, linuxppc-dev, David S. Miller, linux-btrfs, viro
On Wed, Sep 12, 2018 at 05:08:52PM +0200, Arnd Bergmann wrote:
> The .ioctl and .compat_ioctl file operations have the same prototype so
> they can both point to the same function, which works great almost all
> the time when all the commands are compatible.
>
> One exception is the s390 architecture, where a compat pointer is only
> 31 bit wide, and converting it into a 64-bit pointer requires calling
> compat_ptr(). Most drivers here will ever run in s390, but since we now
> have a generic helper for it, it's easy enough to use it consistently.
>
> I double-checked all these drivers to ensure that all ioctl arguments
> are used as pointers or are ignored, but are not interpreted as integer
> values.
>
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
> ---
...
> drivers/platform/x86/wmi.c | 2 +-
...
> static void link_event_work(struct work_struct *work)
> diff --git a/drivers/platform/x86/wmi.c b/drivers/platform/x86/wmi.c
> index 04791ea5d97b..e4d0697e07d6 100644
> --- a/drivers/platform/x86/wmi.c
> +++ b/drivers/platform/x86/wmi.c
> @@ -886,7 +886,7 @@ static const struct file_operations wmi_fops = {
> .read = wmi_char_read,
> .open = wmi_char_open,
> .unlocked_ioctl = wmi_ioctl,
> - .compat_ioctl = wmi_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
For platform/drivers/x86:
Acked-by: Darren Hart (VMware) <dvhart@infradead.org>
As for a longer term solution, would it be possible to init fops in such
a way that the compat_ioctl call defaults to generic_compat_ioctl_ptrarg
so we don't have to duplicate this boilerplate for every ioctl fops
structure?
--
Darren Hart
VMware Open Source Technology Center
_______________________________________________
Linux-nvdimm mailing list
Linux-nvdimm@lists.01.org
https://lists.01.org/mailman/listinfo/linux-nvdimm
^ permalink raw reply [flat|nested] 141+ messages in thread
* Re: [PATCH v2 05/17] compat_ioctl: move more drivers to generic_compat_ioctl_ptrarg
@ 2018-09-14 20:35 ` Darren Hart
0 siblings, 0 replies; 141+ messages in thread
From: Darren Hart @ 2018-09-14 20:35 UTC (permalink / raw)
To: Arnd Bergmann
Cc: viro, linux-fsdevel, Greg Kroah-Hartman, David S. Miller, devel,
linux-kernel, qat-linux, linux-crypto, linux-media, dri-devel,
linaro-mm-sig, amd-gfx, linux-input, linux-iio, linux-rdma,
linux-nvdimm, linux-nvme, linux-pci, platform-driver-x86,
linux-remoteproc, sparclinux, linux-scsi, linux-usb, linux-fbdev,
linuxppc-dev, linux-btrfs
On Wed, Sep 12, 2018 at 05:08:52PM +0200, Arnd Bergmann wrote:
> The .ioctl and .compat_ioctl file operations have the same prototype so
> they can both point to the same function, which works great almost all
> the time when all the commands are compatible.
>
> One exception is the s390 architecture, where a compat pointer is only
> 31 bit wide, and converting it into a 64-bit pointer requires calling
> compat_ptr(). Most drivers here will ever run in s390, but since we now
> have a generic helper for it, it's easy enough to use it consistently.
>
> I double-checked all these drivers to ensure that all ioctl arguments
> are used as pointers or are ignored, but are not interpreted as integer
> values.
>
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
> ---
...
> drivers/platform/x86/wmi.c | 2 +-
...
> static void link_event_work(struct work_struct *work)
> diff --git a/drivers/platform/x86/wmi.c b/drivers/platform/x86/wmi.c
> index 04791ea5d97b..e4d0697e07d6 100644
> --- a/drivers/platform/x86/wmi.c
> +++ b/drivers/platform/x86/wmi.c
> @@ -886,7 +886,7 @@ static const struct file_operations wmi_fops = {
> .read = wmi_char_read,
> .open = wmi_char_open,
> .unlocked_ioctl = wmi_ioctl,
> - .compat_ioctl = wmi_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
For platform/drivers/x86:
Acked-by: Darren Hart (VMware) <dvhart@infradead.org>
As for a longer term solution, would it be possible to init fops in such
a way that the compat_ioctl call defaults to generic_compat_ioctl_ptrarg
so we don't have to duplicate this boilerplate for every ioctl fops
structure?
--
Darren Hart
VMware Open Source Technology Center
^ permalink raw reply [flat|nested] 141+ messages in thread
* [v2,05/17] compat_ioctl: move more drivers to generic_compat_ioctl_ptrarg
@ 2018-09-14 20:35 ` Darren Hart
0 siblings, 0 replies; 141+ messages in thread
From: Darren Hart @ 2018-09-14 20:35 UTC (permalink / raw)
To: Arnd Bergmann
Cc: viro, linux-fsdevel, Greg Kroah-Hartman, David S. Miller, devel,
linux-kernel, qat-linux, linux-crypto, linux-media, dri-devel,
linaro-mm-sig, amd-gfx, linux-input, linux-iio, linux-rdma,
linux-nvdimm, linux-nvme, linux-pci, platform-driver-x86,
linux-remoteproc, sparclinux, linux-scsi, linux-usb, linux-fbdev,
linuxppc-dev, linux-btrfs, ceph-devel, linux-wireless, netdev
On Wed, Sep 12, 2018 at 05:08:52PM +0200, Arnd Bergmann wrote:
> The .ioctl and .compat_ioctl file operations have the same prototype so
> they can both point to the same function, which works great almost all
> the time when all the commands are compatible.
>
> One exception is the s390 architecture, where a compat pointer is only
> 31 bit wide, and converting it into a 64-bit pointer requires calling
> compat_ptr(). Most drivers here will ever run in s390, but since we now
> have a generic helper for it, it's easy enough to use it consistently.
>
> I double-checked all these drivers to ensure that all ioctl arguments
> are used as pointers or are ignored, but are not interpreted as integer
> values.
>
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
> ---
...
> drivers/platform/x86/wmi.c | 2 +-
...
> static void link_event_work(struct work_struct *work)
> diff --git a/drivers/platform/x86/wmi.c b/drivers/platform/x86/wmi.c
> index 04791ea5d97b..e4d0697e07d6 100644
> --- a/drivers/platform/x86/wmi.c
> +++ b/drivers/platform/x86/wmi.c
> @@ -886,7 +886,7 @@ static const struct file_operations wmi_fops = {
> .read = wmi_char_read,
> .open = wmi_char_open,
> .unlocked_ioctl = wmi_ioctl,
> - .compat_ioctl = wmi_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
For platform/drivers/x86:
Acked-by: Darren Hart (VMware) <dvhart@infradead.org>
As for a longer term solution, would it be possible to init fops in such
a way that the compat_ioctl call defaults to generic_compat_ioctl_ptrarg
so we don't have to duplicate this boilerplate for every ioctl fops
structure?
^ permalink raw reply [flat|nested] 141+ messages in thread
* Re: [PATCH v2 05/17] compat_ioctl: move more drivers to generic_compat_ioctl_ptrarg
@ 2018-09-14 20:35 ` Darren Hart
0 siblings, 0 replies; 141+ messages in thread
From: Darren Hart @ 2018-09-14 20:35 UTC (permalink / raw)
To: Arnd Bergmann
Cc: viro, linux-fsdevel, Greg Kroah-Hartman, David S. Miller, devel,
linux-kernel, qat-linux, linux-crypto, linux-media, dri-devel,
linaro-mm-sig, amd-gfx, linux-input, linux-iio, linux-rdma,
linux-nvdimm, linux-nvme, linux-pci, platform-driver-x86,
linux-remoteproc, sparclinux, linux-scsi, linux-usb, linux-fbdev,
linuxppc-dev, linux-btrfs
On Wed, Sep 12, 2018 at 05:08:52PM +0200, Arnd Bergmann wrote:
> The .ioctl and .compat_ioctl file operations have the same prototype so
> they can both point to the same function, which works great almost all
> the time when all the commands are compatible.
>
> One exception is the s390 architecture, where a compat pointer is only
> 31 bit wide, and converting it into a 64-bit pointer requires calling
> compat_ptr(). Most drivers here will ever run in s390, but since we now
> have a generic helper for it, it's easy enough to use it consistently.
>
> I double-checked all these drivers to ensure that all ioctl arguments
> are used as pointers or are ignored, but are not interpreted as integer
> values.
>
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
> ---
...
> drivers/platform/x86/wmi.c | 2 +-
...
> static void link_event_work(struct work_struct *work)
> diff --git a/drivers/platform/x86/wmi.c b/drivers/platform/x86/wmi.c
> index 04791ea5d97b..e4d0697e07d6 100644
> --- a/drivers/platform/x86/wmi.c
> +++ b/drivers/platform/x86/wmi.c
> @@ -886,7 +886,7 @@ static const struct file_operations wmi_fops = {
> .read = wmi_char_read,
> .open = wmi_char_open,
> .unlocked_ioctl = wmi_ioctl,
> - .compat_ioctl = wmi_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
For platform/drivers/x86:
Acked-by: Darren Hart (VMware) <dvhart@infradead.org>
As for a longer term solution, would it be possible to init fops in such
a way that the compat_ioctl call defaults to generic_compat_ioctl_ptrarg
so we don't have to duplicate this boilerplate for every ioctl fops
structure?
--
Darren Hart
VMware Open Source Technology Center
^ permalink raw reply [flat|nested] 141+ messages in thread
* Re: [PATCH v2 05/17] compat_ioctl: move more drivers to generic_compat_ioctl_ptrarg
@ 2018-09-14 20:35 ` Darren Hart
0 siblings, 0 replies; 141+ messages in thread
From: Darren Hart @ 2018-09-14 20:35 UTC (permalink / raw)
To: Arnd Bergmann
Cc: viro, linux-fsdevel, Greg Kroah-Hartman, David S. Miller, devel,
linux-kernel, qat-linux, linux-crypto, linux-media, dri-devel,
linaro-mm-sig, amd-gfx, linux-input, linux-iio, linux-rdma,
linux-nvdimm, linux-nvme, linux-pci, platform-driver-x86,
linux-remoteproc, sparclinux, linux-scsi, linux-usb, linux-fbdev,
linuxppc-dev, linux-btrfs, ceph-devel, linux-wireless, netdev
On Wed, Sep 12, 2018 at 05:08:52PM +0200, Arnd Bergmann wrote:
> The .ioctl and .compat_ioctl file operations have the same prototype so
> they can both point to the same function, which works great almost all
> the time when all the commands are compatible.
>
> One exception is the s390 architecture, where a compat pointer is only
> 31 bit wide, and converting it into a 64-bit pointer requires calling
> compat_ptr(). Most drivers here will ever run in s390, but since we now
> have a generic helper for it, it's easy enough to use it consistently.
>
> I double-checked all these drivers to ensure that all ioctl arguments
> are used as pointers or are ignored, but are not interpreted as integer
> values.
>
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
> ---
...
> drivers/platform/x86/wmi.c | 2 +-
...
> static void link_event_work(struct work_struct *work)
> diff --git a/drivers/platform/x86/wmi.c b/drivers/platform/x86/wmi.c
> index 04791ea5d97b..e4d0697e07d6 100644
> --- a/drivers/platform/x86/wmi.c
> +++ b/drivers/platform/x86/wmi.c
> @@ -886,7 +886,7 @@ static const struct file_operations wmi_fops = {
> .read = wmi_char_read,
> .open = wmi_char_open,
> .unlocked_ioctl = wmi_ioctl,
> - .compat_ioctl = wmi_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
For platform/drivers/x86:
Acked-by: Darren Hart (VMware) <dvhart@infradead.org>
As for a longer term solution, would it be possible to init fops in such
a way that the compat_ioctl call defaults to generic_compat_ioctl_ptrarg
so we don't have to duplicate this boilerplate for every ioctl fops
structure?
--
Darren Hart
VMware Open Source Technology Center
^ permalink raw reply [flat|nested] 141+ messages in thread
* Re: [PATCH v2 05/17] compat_ioctl: move more drivers to generic_compat_ioctl_ptrarg
2018-09-14 20:35 ` Darren Hart
` (2 preceding siblings ...)
(?)
@ 2018-09-14 20:57 ` Al Viro
-1 siblings, 0 replies; 141+ messages in thread
From: Al Viro @ 2018-09-14 20:57 UTC (permalink / raw)
To: Darren Hart
Cc: linux-fbdev, linux-iio, linux-pci, linux-remoteproc, linux-nvme,
platform-driver-x86, sparclinux, devel, linux-scsi, linux-nvdimm,
linux-rdma, qat-linux, amd-gfx, linux-input, linux-media,
Arnd Bergmann, linaro-mm-sig, dri-devel, ceph-devel,
Greg Kroah-Hartman, linux-usb, linux-wireless, linux-kernel,
linux-crypto, netdev, linux-fsdevel, linuxppc-dev,
David S. Miller, linux-btrfs
On Fri, Sep 14, 2018 at 01:35:06PM -0700, Darren Hart wrote:
> Acked-by: Darren Hart (VMware) <dvhart@infradead.org>
>
> As for a longer term solution, would it be possible to init fops in such
> a way that the compat_ioctl call defaults to generic_compat_ioctl_ptrarg
> so we don't have to duplicate this boilerplate for every ioctl fops
> structure?
Bad idea, that... Because several years down the road somebody will add
an ioctl that takes an unsigned int for argument. Without so much as looking
at your magical mystery macro being used to initialize file_operations.
FWIW, I would name that helper in more blunt way - something like
compat_ioctl_only_compat_pointer_ioctls_here()...
_______________________________________________
Linux-nvdimm mailing list
Linux-nvdimm@lists.01.org
https://lists.01.org/mailman/listinfo/linux-nvdimm
^ permalink raw reply [flat|nested] 141+ messages in thread
* Re: [PATCH v2 05/17] compat_ioctl: move more drivers to generic_compat_ioctl_ptrarg
@ 2018-09-14 20:57 ` Al Viro
0 siblings, 0 replies; 141+ messages in thread
From: Al Viro @ 2018-09-14 20:57 UTC (permalink / raw)
To: Darren Hart
Cc: Arnd Bergmann, linux-fsdevel, Greg Kroah-Hartman,
David S. Miller, devel, linux-kernel, qat-linux, linux-crypto,
linux-media, dri-devel, linaro-mm-sig, amd-gfx, linux-input,
linux-iio, linux-rdma, linux-nvdimm, linux-nvme, linux-pci,
platform-driver-x86, linux-remoteproc, sparclinux, linux-scsi,
linux-usb, linux-fbdev, linuxppc-dev, linux-btrfs
On Fri, Sep 14, 2018 at 01:35:06PM -0700, Darren Hart wrote:
> Acked-by: Darren Hart (VMware) <dvhart@infradead.org>
>
> As for a longer term solution, would it be possible to init fops in such
> a way that the compat_ioctl call defaults to generic_compat_ioctl_ptrarg
> so we don't have to duplicate this boilerplate for every ioctl fops
> structure?
Bad idea, that... Because several years down the road somebody will add
an ioctl that takes an unsigned int for argument. Without so much as looking
at your magical mystery macro being used to initialize file_operations.
FWIW, I would name that helper in more blunt way - something like
compat_ioctl_only_compat_pointer_ioctls_here()...
^ permalink raw reply [flat|nested] 141+ messages in thread
* [v2,05/17] compat_ioctl: move more drivers to generic_compat_ioctl_ptrarg
@ 2018-09-14 20:57 ` Al Viro
0 siblings, 0 replies; 141+ messages in thread
From: Al Viro @ 2018-09-14 20:57 UTC (permalink / raw)
To: Darren Hart
Cc: Arnd Bergmann, linux-fsdevel, Greg Kroah-Hartman,
David S. Miller, devel, linux-kernel, qat-linux, linux-crypto,
linux-media, dri-devel, linaro-mm-sig, amd-gfx, linux-input,
linux-iio, linux-rdma, linux-nvdimm, linux-nvme, linux-pci,
platform-driver-x86, linux-remoteproc, sparclinux, linux-scsi,
linux-usb, linux-fbdev, linuxppc-dev, linux-btrfs, ceph-devel,
linux-wireless, netdev
On Fri, Sep 14, 2018 at 01:35:06PM -0700, Darren Hart wrote:
> Acked-by: Darren Hart (VMware) <dvhart@infradead.org>
>
> As for a longer term solution, would it be possible to init fops in such
> a way that the compat_ioctl call defaults to generic_compat_ioctl_ptrarg
> so we don't have to duplicate this boilerplate for every ioctl fops
> structure?
Bad idea, that... Because several years down the road somebody will add
an ioctl that takes an unsigned int for argument. Without so much as looking
at your magical mystery macro being used to initialize file_operations.
FWIW, I would name that helper in more blunt way - something like
compat_ioctl_only_compat_pointer_ioctls_here()...
^ permalink raw reply [flat|nested] 141+ messages in thread
* Re: [PATCH v2 05/17] compat_ioctl: move more drivers to generic_compat_ioctl_ptrarg
@ 2018-09-14 20:57 ` Al Viro
0 siblings, 0 replies; 141+ messages in thread
From: Al Viro @ 2018-09-14 20:57 UTC (permalink / raw)
To: Darren Hart
Cc: Arnd Bergmann, linux-fsdevel, Greg Kroah-Hartman,
David S. Miller, devel, linux-kernel, qat-linux, linux-crypto,
linux-media, dri-devel, linaro-mm-sig, amd-gfx, linux-input,
linux-iio, linux-rdma, linux-nvdimm, linux-nvme, linux-pci,
platform-driver-x86, linux-remoteproc, sparclinux, linux-scsi,
linux-usb, linux-fbdev, linuxppc-dev, linux-btrfs
On Fri, Sep 14, 2018 at 01:35:06PM -0700, Darren Hart wrote:
> Acked-by: Darren Hart (VMware) <dvhart@infradead.org>
>
> As for a longer term solution, would it be possible to init fops in such
> a way that the compat_ioctl call defaults to generic_compat_ioctl_ptrarg
> so we don't have to duplicate this boilerplate for every ioctl fops
> structure?
Bad idea, that... Because several years down the road somebody will add
an ioctl that takes an unsigned int for argument. Without so much as looking
at your magical mystery macro being used to initialize file_operations.
FWIW, I would name that helper in more blunt way - something like
compat_ioctl_only_compat_pointer_ioctls_here()...
^ permalink raw reply [flat|nested] 141+ messages in thread
* Re: [PATCH v2 05/17] compat_ioctl: move more drivers to generic_compat_ioctl_ptrarg
@ 2018-09-14 20:57 ` Al Viro
0 siblings, 0 replies; 141+ messages in thread
From: Al Viro @ 2018-09-14 20:57 UTC (permalink / raw)
To: Darren Hart
Cc: Arnd Bergmann, linux-fsdevel, Greg Kroah-Hartman,
David S. Miller, devel, linux-kernel, qat-linux, linux-crypto,
linux-media, dri-devel, linaro-mm-sig, amd-gfx, linux-input,
linux-iio, linux-rdma, linux-nvdimm, linux-nvme, linux-pci,
platform-driver-x86, linux-remoteproc, sparclinux, linux-scsi,
linux-usb, linux-fbdev, linuxppc-dev, linux-btrfs, ceph-devel,
linux-wireless, netdev
On Fri, Sep 14, 2018 at 01:35:06PM -0700, Darren Hart wrote:
> Acked-by: Darren Hart (VMware) <dvhart@infradead.org>
>
> As for a longer term solution, would it be possible to init fops in such
> a way that the compat_ioctl call defaults to generic_compat_ioctl_ptrarg
> so we don't have to duplicate this boilerplate for every ioctl fops
> structure?
Bad idea, that... Because several years down the road somebody will add
an ioctl that takes an unsigned int for argument. Without so much as looking
at your magical mystery macro being used to initialize file_operations.
FWIW, I would name that helper in more blunt way - something like
compat_ioctl_only_compat_pointer_ioctls_here()...
^ permalink raw reply [flat|nested] 141+ messages in thread
* Re: [PATCH v2 05/17] compat_ioctl: move more drivers to generic_compat_ioctl_ptrarg
2018-09-14 20:57 ` Al Viro
` (2 preceding siblings ...)
(?)
@ 2018-09-18 17:51 ` Darren Hart
-1 siblings, 0 replies; 141+ messages in thread
From: Darren Hart @ 2018-09-18 17:51 UTC (permalink / raw)
To: Al Viro
Cc: linux-fbdev, linux-iio, linux-pci, linux-remoteproc, linux-nvme,
platform-driver-x86, sparclinux, devel, linux-scsi, linux-nvdimm,
linux-rdma, qat-linux, amd-gfx, linux-input, linux-media,
Arnd Bergmann, linaro-mm-sig, dri-devel, ceph-devel,
Greg Kroah-Hartman, linux-usb, linux-wireless, linux-kernel,
linux-crypto, netdev, linux-fsdevel, linuxppc-dev,
David S. Miller, linux-btrfs
On Fri, Sep 14, 2018 at 09:57:48PM +0100, Al Viro wrote:
> On Fri, Sep 14, 2018 at 01:35:06PM -0700, Darren Hart wrote:
>
> > Acked-by: Darren Hart (VMware) <dvhart@infradead.org>
> >
> > As for a longer term solution, would it be possible to init fops in such
> > a way that the compat_ioctl call defaults to generic_compat_ioctl_ptrarg
> > so we don't have to duplicate this boilerplate for every ioctl fops
> > structure?
>
> Bad idea, that... Because several years down the road somebody will add
> an ioctl that takes an unsigned int for argument. Without so much as looking
> at your magical mystery macro being used to initialize file_operations.
Fair, being explicit in the declaration as it is currently may be
preferable then.
--
Darren Hart
VMware Open Source Technology Center
_______________________________________________
Linux-nvdimm mailing list
Linux-nvdimm@lists.01.org
https://lists.01.org/mailman/listinfo/linux-nvdimm
^ permalink raw reply [flat|nested] 141+ messages in thread
* Re: [PATCH v2 05/17] compat_ioctl: move more drivers to generic_compat_ioctl_ptrarg
@ 2018-09-18 17:51 ` Darren Hart
0 siblings, 0 replies; 141+ messages in thread
From: Darren Hart @ 2018-09-18 17:51 UTC (permalink / raw)
To: Al Viro
Cc: Arnd Bergmann, linux-fsdevel, Greg Kroah-Hartman,
David S. Miller, devel, linux-kernel, qat-linux, linux-crypto,
linux-media, dri-devel, linaro-mm-sig, amd-gfx, linux-input,
linux-iio, linux-rdma, linux-nvdimm, linux-nvme, linux-pci,
platform-driver-x86, linux-remoteproc, sparclinux, linux-scsi,
linux-usb, linux-fbdev, linuxppc-dev, linux-btrfs
On Fri, Sep 14, 2018 at 09:57:48PM +0100, Al Viro wrote:
> On Fri, Sep 14, 2018 at 01:35:06PM -0700, Darren Hart wrote:
>
> > Acked-by: Darren Hart (VMware) <dvhart@infradead.org>
> >
> > As for a longer term solution, would it be possible to init fops in such
> > a way that the compat_ioctl call defaults to generic_compat_ioctl_ptrarg
> > so we don't have to duplicate this boilerplate for every ioctl fops
> > structure?
>
> Bad idea, that... Because several years down the road somebody will add
> an ioctl that takes an unsigned int for argument. Without so much as looking
> at your magical mystery macro being used to initialize file_operations.
Fair, being explicit in the declaration as it is currently may be
preferable then.
--
Darren Hart
VMware Open Source Technology Center
^ permalink raw reply [flat|nested] 141+ messages in thread
* [v2,05/17] compat_ioctl: move more drivers to generic_compat_ioctl_ptrarg
@ 2018-09-18 17:51 ` Darren Hart
0 siblings, 0 replies; 141+ messages in thread
From: Darren Hart @ 2018-09-18 17:51 UTC (permalink / raw)
To: Al Viro
Cc: Arnd Bergmann, linux-fsdevel, Greg Kroah-Hartman,
David S. Miller, devel, linux-kernel, qat-linux, linux-crypto,
linux-media, dri-devel, linaro-mm-sig, amd-gfx, linux-input,
linux-iio, linux-rdma, linux-nvdimm, linux-nvme, linux-pci,
platform-driver-x86, linux-remoteproc, sparclinux, linux-scsi,
linux-usb, linux-fbdev, linuxppc-dev, linux-btrfs, ceph-devel,
linux-wireless, netdev
On Fri, Sep 14, 2018 at 09:57:48PM +0100, Al Viro wrote:
> On Fri, Sep 14, 2018 at 01:35:06PM -0700, Darren Hart wrote:
>
> > Acked-by: Darren Hart (VMware) <dvhart@infradead.org>
> >
> > As for a longer term solution, would it be possible to init fops in such
> > a way that the compat_ioctl call defaults to generic_compat_ioctl_ptrarg
> > so we don't have to duplicate this boilerplate for every ioctl fops
> > structure?
>
> Bad idea, that... Because several years down the road somebody will add
> an ioctl that takes an unsigned int for argument. Without so much as looking
> at your magical mystery macro being used to initialize file_operations.
Fair, being explicit in the declaration as it is currently may be
preferable then.
^ permalink raw reply [flat|nested] 141+ messages in thread
* Re: [PATCH v2 05/17] compat_ioctl: move more drivers to generic_compat_ioctl_ptrarg
@ 2018-09-18 17:51 ` Darren Hart
0 siblings, 0 replies; 141+ messages in thread
From: Darren Hart @ 2018-09-18 17:51 UTC (permalink / raw)
To: Al Viro
Cc: Arnd Bergmann, linux-fsdevel, Greg Kroah-Hartman,
David S. Miller, devel, linux-kernel, qat-linux, linux-crypto,
linux-media, dri-devel, linaro-mm-sig, amd-gfx, linux-input,
linux-iio, linux-rdma, linux-nvdimm, linux-nvme, linux-pci,
platform-driver-x86, linux-remoteproc, sparclinux, linux-scsi,
linux-usb, linux-fbdev, linuxppc-dev, linux-btrfs
On Fri, Sep 14, 2018 at 09:57:48PM +0100, Al Viro wrote:
> On Fri, Sep 14, 2018 at 01:35:06PM -0700, Darren Hart wrote:
>
> > Acked-by: Darren Hart (VMware) <dvhart@infradead.org>
> >
> > As for a longer term solution, would it be possible to init fops in such
> > a way that the compat_ioctl call defaults to generic_compat_ioctl_ptrarg
> > so we don't have to duplicate this boilerplate for every ioctl fops
> > structure?
>
> Bad idea, that... Because several years down the road somebody will add
> an ioctl that takes an unsigned int for argument. Without so much as looking
> at your magical mystery macro being used to initialize file_operations.
Fair, being explicit in the declaration as it is currently may be
preferable then.
--
Darren Hart
VMware Open Source Technology Center
^ permalink raw reply [flat|nested] 141+ messages in thread
* Re: [PATCH v2 05/17] compat_ioctl: move more drivers to generic_compat_ioctl_ptrarg
@ 2018-09-18 17:51 ` Darren Hart
0 siblings, 0 replies; 141+ messages in thread
From: Darren Hart @ 2018-09-18 17:51 UTC (permalink / raw)
To: Al Viro
Cc: Arnd Bergmann, linux-fsdevel, Greg Kroah-Hartman,
David S. Miller, devel, linux-kernel, qat-linux, linux-crypto,
linux-media, dri-devel, linaro-mm-sig, amd-gfx, linux-input,
linux-iio, linux-rdma, linux-nvdimm, linux-nvme, linux-pci,
platform-driver-x86, linux-remoteproc, sparclinux, linux-scsi,
linux-usb, linux-fbdev, linuxppc-dev, linux-btrfs, ceph-devel,
linux-wireless, netdev
On Fri, Sep 14, 2018 at 09:57:48PM +0100, Al Viro wrote:
> On Fri, Sep 14, 2018 at 01:35:06PM -0700, Darren Hart wrote:
>
> > Acked-by: Darren Hart (VMware) <dvhart@infradead.org>
> >
> > As for a longer term solution, would it be possible to init fops in such
> > a way that the compat_ioctl call defaults to generic_compat_ioctl_ptrarg
> > so we don't have to duplicate this boilerplate for every ioctl fops
> > structure?
>
> Bad idea, that... Because several years down the road somebody will add
> an ioctl that takes an unsigned int for argument. Without so much as looking
> at your magical mystery macro being used to initialize file_operations.
Fair, being explicit in the declaration as it is currently may be
preferable then.
--
Darren Hart
VMware Open Source Technology Center
^ permalink raw reply [flat|nested] 141+ messages in thread
* Re: [PATCH v2 05/17] compat_ioctl: move more drivers to generic_compat_ioctl_ptrarg
2018-09-18 17:51 ` Darren Hart
(?)
(?)
@ 2018-09-18 17:59 ` Jason Gunthorpe
-1 siblings, 0 replies; 141+ messages in thread
From: Jason Gunthorpe @ 2018-09-18 17:59 UTC (permalink / raw)
To: Darren Hart
Cc: Al Viro, Arnd Bergmann, linux-fsdevel, Greg Kroah-Hartman,
David S. Miller, devel, linux-kernel, qat-linux, linux-crypto,
linux-media, dri-devel, linaro-mm-sig, amd-gfx, linux-input,
linux-iio, linux-rdma, linux-nvdimm, linux-nvme, linux-pci,
platform-driver-x86, linux-remoteproc, sparclinux, linux-scsi,
linux-usb, linux-fbdev, linuxppc-dev, linux-btrfs, ceph-devel,
linux-wireless, netdev
On Tue, Sep 18, 2018 at 10:51:08AM -0700, Darren Hart wrote:
> On Fri, Sep 14, 2018 at 09:57:48PM +0100, Al Viro wrote:
> > On Fri, Sep 14, 2018 at 01:35:06PM -0700, Darren Hart wrote:
> >
> > > Acked-by: Darren Hart (VMware) <dvhart@infradead.org>
> > >
> > > As for a longer term solution, would it be possible to init fops in such
> > > a way that the compat_ioctl call defaults to generic_compat_ioctl_ptrarg
> > > so we don't have to duplicate this boilerplate for every ioctl fops
> > > structure?
> >
> > Bad idea, that... Because several years down the road somebody will add
> > an ioctl that takes an unsigned int for argument. Without so much as looking
> > at your magical mystery macro being used to initialize file_operations.
>
> Fair, being explicit in the declaration as it is currently may be
> preferable then.
It would be much cleaner and safer if you could arrange things to add
something like this to struct file_operations:
long (*ptr_ioctl) (struct file *, unsigned int, void __user *);
Where the core code automatically converts the unsigned long to the
void __user * as appropriate.
Then it just works right always and the compiler will help address
Al's concern down the road.
Cheers,
Jason
^ permalink raw reply [flat|nested] 141+ messages in thread
* Re: [PATCH v2 05/17] compat_ioctl: move more drivers to generic_compat_ioctl_ptrarg
@ 2018-09-18 17:59 ` Jason Gunthorpe
0 siblings, 0 replies; 141+ messages in thread
From: Jason Gunthorpe @ 2018-09-18 17:59 UTC (permalink / raw)
To: Darren Hart
Cc: Al Viro, Arnd Bergmann, linux-fsdevel, Greg Kroah-Hartman,
David S. Miller, devel, linux-kernel, qat-linux, linux-crypto,
linux-media, dri-devel, linaro-mm-sig, amd-gfx, linux-input,
linux-iio, linux-rdma, linux-nvdimm, linux-nvme, linux-pci,
platform-driver-x86, linux-remoteproc, sparclinux, linux-scsi,
linux-usb, linux-fbdev, linuxppc-d
On Tue, Sep 18, 2018 at 10:51:08AM -0700, Darren Hart wrote:
> On Fri, Sep 14, 2018 at 09:57:48PM +0100, Al Viro wrote:
> > On Fri, Sep 14, 2018 at 01:35:06PM -0700, Darren Hart wrote:
> >
> > > Acked-by: Darren Hart (VMware) <dvhart@infradead.org>
> > >
> > > As for a longer term solution, would it be possible to init fops in such
> > > a way that the compat_ioctl call defaults to generic_compat_ioctl_ptrarg
> > > so we don't have to duplicate this boilerplate for every ioctl fops
> > > structure?
> >
> > Bad idea, that... Because several years down the road somebody will add
> > an ioctl that takes an unsigned int for argument. Without so much as looking
> > at your magical mystery macro being used to initialize file_operations.
>
> Fair, being explicit in the declaration as it is currently may be
> preferable then.
It would be much cleaner and safer if you could arrange things to add
something like this to struct file_operations:
long (*ptr_ioctl) (struct file *, unsigned int, void __user *);
Where the core code automatically converts the unsigned long to the
void __user * as appropriate.
Then it just works right always and the compiler will help address
Al's concern down the road.
Cheers,
Jason
^ permalink raw reply [flat|nested] 141+ messages in thread
* [v2,05/17] compat_ioctl: move more drivers to generic_compat_ioctl_ptrarg
@ 2018-09-18 17:59 ` Jason Gunthorpe
0 siblings, 0 replies; 141+ messages in thread
From: Jason Gunthorpe @ 2018-09-18 17:59 UTC (permalink / raw)
To: Darren Hart
Cc: Al Viro, Arnd Bergmann, linux-fsdevel, Greg Kroah-Hartman,
David S. Miller, devel, linux-kernel, qat-linux, linux-crypto,
linux-media, dri-devel, linaro-mm-sig, amd-gfx, linux-input,
linux-iio, linux-rdma, linux-nvdimm, linux-nvme, linux-pci,
platform-driver-x86, linux-remoteproc, sparclinux, linux-scsi,
linux-usb, linux-fbdev, linuxppc-dev, linux-btrfs, ceph-devel,
linux-wireless, netdev
On Tue, Sep 18, 2018 at 10:51:08AM -0700, Darren Hart wrote:
> On Fri, Sep 14, 2018 at 09:57:48PM +0100, Al Viro wrote:
> > On Fri, Sep 14, 2018 at 01:35:06PM -0700, Darren Hart wrote:
> >
> > > Acked-by: Darren Hart (VMware) <dvhart@infradead.org>
> > >
> > > As for a longer term solution, would it be possible to init fops in such
> > > a way that the compat_ioctl call defaults to generic_compat_ioctl_ptrarg
> > > so we don't have to duplicate this boilerplate for every ioctl fops
> > > structure?
> >
> > Bad idea, that... Because several years down the road somebody will add
> > an ioctl that takes an unsigned int for argument. Without so much as looking
> > at your magical mystery macro being used to initialize file_operations.
>
> Fair, being explicit in the declaration as it is currently may be
> preferable then.
It would be much cleaner and safer if you could arrange things to add
something like this to struct file_operations:
long (*ptr_ioctl) (struct file *, unsigned int, void __user *);
Where the core code automatically converts the unsigned long to the
void __user * as appropriate.
Then it just works right always and the compiler will help address
Al's concern down the road.
Cheers,
Jason
^ permalink raw reply [flat|nested] 141+ messages in thread
* Re: [PATCH v2 05/17] compat_ioctl: move more drivers to generic_compat_ioctl_ptrarg
@ 2018-09-18 17:59 ` Jason Gunthorpe
0 siblings, 0 replies; 141+ messages in thread
From: Jason Gunthorpe @ 2018-09-18 17:59 UTC (permalink / raw)
To: Darren Hart
Cc: Al Viro, Arnd Bergmann, linux-fsdevel, Greg Kroah-Hartman,
David S. Miller, devel, linux-kernel, qat-linux, linux-crypto,
linux-media, dri-devel, linaro-mm-sig, amd-gfx, linux-input,
linux-iio, linux-rdma, linux-nvdimm, linux-nvme, linux-pci,
platform-driver-x86, linux-remoteproc, sparclinux, linux-scsi,
linux-usb, linux-fbdev, linuxppc-d
On Tue, Sep 18, 2018 at 10:51:08AM -0700, Darren Hart wrote:
> On Fri, Sep 14, 2018 at 09:57:48PM +0100, Al Viro wrote:
> > On Fri, Sep 14, 2018 at 01:35:06PM -0700, Darren Hart wrote:
> >
> > > Acked-by: Darren Hart (VMware) <dvhart@infradead.org>
> > >
> > > As for a longer term solution, would it be possible to init fops in such
> > > a way that the compat_ioctl call defaults to generic_compat_ioctl_ptrarg
> > > so we don't have to duplicate this boilerplate for every ioctl fops
> > > structure?
> >
> > Bad idea, that... Because several years down the road somebody will add
> > an ioctl that takes an unsigned int for argument. Without so much as looking
> > at your magical mystery macro being used to initialize file_operations.
>
> Fair, being explicit in the declaration as it is currently may be
> preferable then.
It would be much cleaner and safer if you could arrange things to add
something like this to struct file_operations:
long (*ptr_ioctl) (struct file *, unsigned int, void __user *);
Where the core code automatically converts the unsigned long to the
void __user * as appropriate.
Then it just works right always and the compiler will help address
Al's concern down the road.
Cheers,
Jason
^ permalink raw reply [flat|nested] 141+ messages in thread
* Re: [PATCH v2 05/17] compat_ioctl: move more drivers to generic_compat_ioctl_ptrarg
2018-09-18 17:59 ` [PATCH v2 05/17] " Jason Gunthorpe
` (4 preceding siblings ...)
(?)
@ 2018-09-24 20:18 ` Arnd Bergmann
-1 siblings, 0 replies; 141+ messages in thread
From: Arnd Bergmann @ 2018-09-24 20:18 UTC (permalink / raw)
To: Jason Gunthorpe
Cc: linux-fbdev, linux-iio, linux-pci, linux-remoteproc, linux-nvme,
Platform Driver, sparclinux, driverdevel, linux-scsi,
linux-nvdimm, linux-rdma, qat-linux, amd-gfx,
open list:HID CORE LAYER, Darren Hart, Linux Media Mailing List,
linaro-mm-sig, dri-devel, ceph-devel, gregkh, USB list,
linux-wireless, Linux Kernel Mailing List,
open list:HARDWARE RANDOM NUMBER GENERATOR CORE, Networking,
Linux FS-devel Mailing List, linuxppc-dev, David Miller,
linux-btrfs, Al Viro
On Tue, Sep 18, 2018 at 7:59 PM Jason Gunthorpe <jgg@ziepe.ca> wrote:
>
> On Tue, Sep 18, 2018 at 10:51:08AM -0700, Darren Hart wrote:
> > On Fri, Sep 14, 2018 at 09:57:48PM +0100, Al Viro wrote:
> > > On Fri, Sep 14, 2018 at 01:35:06PM -0700, Darren Hart wrote:
> > >
> > > > Acked-by: Darren Hart (VMware) <dvhart@infradead.org>
> > > >
> > > > As for a longer term solution, would it be possible to init fops in such
> > > > a way that the compat_ioctl call defaults to generic_compat_ioctl_ptrarg
> > > > so we don't have to duplicate this boilerplate for every ioctl fops
> > > > structure?
> > >
> > > Bad idea, that... Because several years down the road somebody will add
> > > an ioctl that takes an unsigned int for argument. Without so much as looking
> > > at your magical mystery macro being used to initialize file_operations.
> >
> > Fair, being explicit in the declaration as it is currently may be
> > preferable then.
>
> It would be much cleaner and safer if you could arrange things to add
> something like this to struct file_operations:
>
> long (*ptr_ioctl) (struct file *, unsigned int, void __user *);
>
> Where the core code automatically converts the unsigned long to the
> void __user * as appropriate.
>
> Then it just works right always and the compiler will help address
> Al's concern down the road.
I think if we wanted to do this with a new file operation, the best
way would be to do the copy_from_user()/copy_to_user() in the caller
as well.
We already do this inside of some subsystems, notably drivers/media/,
and it simplifies the implementation of the ioctl handler function
significantly. We obviously cannot do this in general, both because of
traditional drivers that have 16-bit command codes (drivers/tty and others)
and also because of drivers that by accident defined the commands
incorrectly and use the wrong type or the wrong direction in the
definition.
Arnd
_______________________________________________
Linux-nvdimm mailing list
Linux-nvdimm@lists.01.org
https://lists.01.org/mailman/listinfo/linux-nvdimm
^ permalink raw reply [flat|nested] 141+ messages in thread
* Re: [PATCH v2 05/17] compat_ioctl: move more drivers to generic_compat_ioctl_ptrarg
@ 2018-09-24 20:18 ` Arnd Bergmann
0 siblings, 0 replies; 141+ messages in thread
From: Arnd Bergmann @ 2018-09-24 20:18 UTC (permalink / raw)
To: Jason Gunthorpe
Cc: linux-fbdev-u79uwXL29TY76Z2rM5mHXA,
linux-iio-u79uwXL29TY76Z2rM5mHXA, linux-pci,
linux-remoteproc-u79uwXL29TY76Z2rM5mHXA,
linux-nvme-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r, Platform Driver,
sparclinux, driverdevel, linux-scsi,
linux-nvdimm-hn68Rpc1hR1g9hUCZPvPmw, linux-rdma,
qat-linux-ral2JQCrhuEAvxtiuMwx3w,
amd-gfx-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW,
open list:HID CORE LAYER, Darren Hart, Linux Media Mailing List,
linaro-mm-sig-cunTk1MwBs8s++Sfvej+rw, dri-devel, ceph-devel,
gregkh, USB list, linux-wireless
On Tue, Sep 18, 2018 at 7:59 PM Jason Gunthorpe <jgg@ziepe.ca> wrote:
>
> On Tue, Sep 18, 2018 at 10:51:08AM -0700, Darren Hart wrote:
> > On Fri, Sep 14, 2018 at 09:57:48PM +0100, Al Viro wrote:
> > > On Fri, Sep 14, 2018 at 01:35:06PM -0700, Darren Hart wrote:
> > >
> > > > Acked-by: Darren Hart (VMware) <dvhart@infradead.org>
> > > >
> > > > As for a longer term solution, would it be possible to init fops in such
> > > > a way that the compat_ioctl call defaults to generic_compat_ioctl_ptrarg
> > > > so we don't have to duplicate this boilerplate for every ioctl fops
> > > > structure?
> > >
> > > Bad idea, that... Because several years down the road somebody will add
> > > an ioctl that takes an unsigned int for argument. Without so much as looking
> > > at your magical mystery macro being used to initialize file_operations.
> >
> > Fair, being explicit in the declaration as it is currently may be
> > preferable then.
>
> It would be much cleaner and safer if you could arrange things to add
> something like this to struct file_operations:
>
> long (*ptr_ioctl) (struct file *, unsigned int, void __user *);
>
> Where the core code automatically converts the unsigned long to the
> void __user * as appropriate.
>
> Then it just works right always and the compiler will help address
> Al's concern down the road.
I think if we wanted to do this with a new file operation, the best
way would be to do the copy_from_user()/copy_to_user() in the caller
as well.
We already do this inside of some subsystems, notably drivers/media/,
and it simplifies the implementation of the ioctl handler function
significantly. We obviously cannot do this in general, both because of
traditional drivers that have 16-bit command codes (drivers/tty and others)
and also because of drivers that by accident defined the commands
incorrectly and use the wrong type or the wrong direction in the
definition.
Arnd
^ permalink raw reply [flat|nested] 141+ messages in thread
* [v2,05/17] compat_ioctl: move more drivers to generic_compat_ioctl_ptrarg
@ 2018-09-24 20:18 ` Arnd Bergmann
0 siblings, 0 replies; 141+ messages in thread
From: Arnd Bergmann @ 2018-09-24 20:18 UTC (permalink / raw)
To: Jason Gunthorpe
Cc: Darren Hart, Al Viro, Linux FS-devel Mailing List, gregkh,
David Miller, driverdevel, Linux Kernel Mailing List, qat-linux,
open list:HARDWARE RANDOM NUMBER GENERATOR CORE,
Linux Media Mailing List, dri-devel, linaro-mm-sig, amd-gfx,
open list:HID CORE LAYER, linux-iio, linux-rdma, linux-nvdimm,
linux-nvme, linux-pci, Platform Driver, linux-remoteproc,
sparclinux, linux-scsi, USB list, linux-fbdev, linuxppc-dev,
linux-btrfs, ceph-devel, linux-wireless, Networking
On Tue, Sep 18, 2018 at 7:59 PM Jason Gunthorpe <jgg@ziepe.ca> wrote:
>
> On Tue, Sep 18, 2018 at 10:51:08AM -0700, Darren Hart wrote:
> > On Fri, Sep 14, 2018 at 09:57:48PM +0100, Al Viro wrote:
> > > On Fri, Sep 14, 2018 at 01:35:06PM -0700, Darren Hart wrote:
> > >
> > > > Acked-by: Darren Hart (VMware) <dvhart@infradead.org>
> > > >
> > > > As for a longer term solution, would it be possible to init fops in such
> > > > a way that the compat_ioctl call defaults to generic_compat_ioctl_ptrarg
> > > > so we don't have to duplicate this boilerplate for every ioctl fops
> > > > structure?
> > >
> > > Bad idea, that... Because several years down the road somebody will add
> > > an ioctl that takes an unsigned int for argument. Without so much as looking
> > > at your magical mystery macro being used to initialize file_operations.
> >
> > Fair, being explicit in the declaration as it is currently may be
> > preferable then.
>
> It would be much cleaner and safer if you could arrange things to add
> something like this to struct file_operations:
>
> long (*ptr_ioctl) (struct file *, unsigned int, void __user *);
>
> Where the core code automatically converts the unsigned long to the
> void __user * as appropriate.
>
> Then it just works right always and the compiler will help address
> Al's concern down the road.
I think if we wanted to do this with a new file operation, the best
way would be to do the copy_from_user()/copy_to_user() in the caller
as well.
We already do this inside of some subsystems, notably drivers/media/,
and it simplifies the implementation of the ioctl handler function
significantly. We obviously cannot do this in general, both because of
traditional drivers that have 16-bit command codes (drivers/tty and others)
and also because of drivers that by accident defined the commands
incorrectly and use the wrong type or the wrong direction in the
definition.
Arnd
^ permalink raw reply [flat|nested] 141+ messages in thread
* Re: [PATCH v2 05/17] compat_ioctl: move more drivers to generic_compat_ioctl_ptrarg
@ 2018-09-24 20:18 ` Arnd Bergmann
0 siblings, 0 replies; 141+ messages in thread
From: Arnd Bergmann @ 2018-09-24 20:18 UTC (permalink / raw)
To: Jason Gunthorpe
Cc: linux-fbdev-u79uwXL29TY76Z2rM5mHXA,
linux-iio-u79uwXL29TY76Z2rM5mHXA, linux-pci,
linux-remoteproc-u79uwXL29TY76Z2rM5mHXA,
linux-nvme-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r, Platform Driver,
sparclinux, driverdevel, linux-scsi,
linux-nvdimm-hn68Rpc1hR1g9hUCZPvPmw, linux-rdma,
qat-linux-ral2JQCrhuEAvxtiuMwx3w,
amd-gfx-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW,
open list:HID CORE LAYER, Darren Hart, Linux Media Mailing List,
linaro-mm-sig-cunTk1MwBs8s++Sfvej+rw, dri-devel, ceph-devel,
gregkh, USB list, linux-wireless
On Tue, Sep 18, 2018 at 7:59 PM Jason Gunthorpe <jgg-uk2M96/98Pc@public.gmane.org> wrote:
>
> On Tue, Sep 18, 2018 at 10:51:08AM -0700, Darren Hart wrote:
> > On Fri, Sep 14, 2018 at 09:57:48PM +0100, Al Viro wrote:
> > > On Fri, Sep 14, 2018 at 01:35:06PM -0700, Darren Hart wrote:
> > >
> > > > Acked-by: Darren Hart (VMware) <dvhart-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>
> > > >
> > > > As for a longer term solution, would it be possible to init fops in such
> > > > a way that the compat_ioctl call defaults to generic_compat_ioctl_ptrarg
> > > > so we don't have to duplicate this boilerplate for every ioctl fops
> > > > structure?
> > >
> > > Bad idea, that... Because several years down the road somebody will add
> > > an ioctl that takes an unsigned int for argument. Without so much as looking
> > > at your magical mystery macro being used to initialize file_operations.
> >
> > Fair, being explicit in the declaration as it is currently may be
> > preferable then.
>
> It would be much cleaner and safer if you could arrange things to add
> something like this to struct file_operations:
>
> long (*ptr_ioctl) (struct file *, unsigned int, void __user *);
>
> Where the core code automatically converts the unsigned long to the
> void __user * as appropriate.
>
> Then it just works right always and the compiler will help address
> Al's concern down the road.
I think if we wanted to do this with a new file operation, the best
way would be to do the copy_from_user()/copy_to_user() in the caller
as well.
We already do this inside of some subsystems, notably drivers/media/,
and it simplifies the implementation of the ioctl handler function
significantly. We obviously cannot do this in general, both because of
traditional drivers that have 16-bit command codes (drivers/tty and others)
and also because of drivers that by accident defined the commands
incorrectly and use the wrong type or the wrong direction in the
definition.
Arnd
^ permalink raw reply [flat|nested] 141+ messages in thread
* Re: [PATCH v2 05/17] compat_ioctl: move more drivers to generic_compat_ioctl_ptrarg
@ 2018-09-24 20:18 ` Arnd Bergmann
0 siblings, 0 replies; 141+ messages in thread
From: Arnd Bergmann @ 2018-09-24 20:18 UTC (permalink / raw)
To: Jason Gunthorpe
Cc: linux-fbdev-u79uwXL29TY76Z2rM5mHXA,
linux-iio-u79uwXL29TY76Z2rM5mHXA, linux-pci,
linux-remoteproc-u79uwXL29TY76Z2rM5mHXA,
linux-nvme-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r, Platform Driver,
sparclinux, driverdevel, linux-scsi,
linux-nvdimm-hn68Rpc1hR1g9hUCZPvPmw, linux-rdma,
qat-linux-ral2JQCrhuEAvxtiuMwx3w,
amd-gfx-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW,
open list:HID CORE LAYER, Darren Hart, Linux Media Mailing List,
linaro-mm-sig-cunTk1MwBs8s++Sfvej+rw, dri-devel, ceph-devel,
gregkh, USB list, linux-wireless, Linux Kernel Mailing List
On Tue, Sep 18, 2018 at 7:59 PM Jason Gunthorpe <jgg-uk2M96/98Pc@public.gmane.org> wrote:
>
> On Tue, Sep 18, 2018 at 10:51:08AM -0700, Darren Hart wrote:
> > On Fri, Sep 14, 2018 at 09:57:48PM +0100, Al Viro wrote:
> > > On Fri, Sep 14, 2018 at 01:35:06PM -0700, Darren Hart wrote:
> > >
> > > > Acked-by: Darren Hart (VMware) <dvhart-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>
> > > >
> > > > As for a longer term solution, would it be possible to init fops in such
> > > > a way that the compat_ioctl call defaults to generic_compat_ioctl_ptrarg
> > > > so we don't have to duplicate this boilerplate for every ioctl fops
> > > > structure?
> > >
> > > Bad idea, that... Because several years down the road somebody will add
> > > an ioctl that takes an unsigned int for argument. Without so much as looking
> > > at your magical mystery macro being used to initialize file_operations.
> >
> > Fair, being explicit in the declaration as it is currently may be
> > preferable then.
>
> It would be much cleaner and safer if you could arrange things to add
> something like this to struct file_operations:
>
> long (*ptr_ioctl) (struct file *, unsigned int, void __user *);
>
> Where the core code automatically converts the unsigned long to the
> void __user * as appropriate.
>
> Then it just works right always and the compiler will help address
> Al's concern down the road.
I think if we wanted to do this with a new file operation, the best
way would be to do the copy_from_user()/copy_to_user() in the caller
as well.
We already do this inside of some subsystems, notably drivers/media/,
and it simplifies the implementation of the ioctl handler function
significantly. We obviously cannot do this in general, both because of
traditional drivers that have 16-bit command codes (drivers/tty and others)
and also because of drivers that by accident defined the commands
incorrectly and use the wrong type or the wrong direction in the
definition.
Arnd
^ permalink raw reply [flat|nested] 141+ messages in thread
* Re: [PATCH v2 05/17] compat_ioctl: move more drivers to generic_compat_ioctl_ptrarg
@ 2018-09-24 20:18 ` Arnd Bergmann
0 siblings, 0 replies; 141+ messages in thread
From: Arnd Bergmann @ 2018-09-24 20:18 UTC (permalink / raw)
To: Jason Gunthorpe
Cc: Darren Hart, Al Viro, Linux FS-devel Mailing List, gregkh,
David Miller, driverdevel, Linux Kernel Mailing List, qat-linux,
open list:HARDWARE RANDOM NUMBER GENERATOR CORE,
Linux Media Mailing List, dri-devel, linaro-mm-sig, amd-gfx,
open list:HID CORE LAYER, linux-iio, linux-rdma, linux-nvdimm,
linux-nvme, linux-pci, Platform Driver, linux-remoteproc,
sparclinux, linux-scsi, USB list, linux-fbdev, linuxppc-dev,
linux-btrfs, ceph-devel, linux-wireless, Networking
On Tue, Sep 18, 2018 at 7:59 PM Jason Gunthorpe <jgg@ziepe.ca> wrote:
>
> On Tue, Sep 18, 2018 at 10:51:08AM -0700, Darren Hart wrote:
> > On Fri, Sep 14, 2018 at 09:57:48PM +0100, Al Viro wrote:
> > > On Fri, Sep 14, 2018 at 01:35:06PM -0700, Darren Hart wrote:
> > >
> > > > Acked-by: Darren Hart (VMware) <dvhart@infradead.org>
> > > >
> > > > As for a longer term solution, would it be possible to init fops in such
> > > > a way that the compat_ioctl call defaults to generic_compat_ioctl_ptrarg
> > > > so we don't have to duplicate this boilerplate for every ioctl fops
> > > > structure?
> > >
> > > Bad idea, that... Because several years down the road somebody will add
> > > an ioctl that takes an unsigned int for argument. Without so much as looking
> > > at your magical mystery macro being used to initialize file_operations.
> >
> > Fair, being explicit in the declaration as it is currently may be
> > preferable then.
>
> It would be much cleaner and safer if you could arrange things to add
> something like this to struct file_operations:
>
> long (*ptr_ioctl) (struct file *, unsigned int, void __user *);
>
> Where the core code automatically converts the unsigned long to the
> void __user * as appropriate.
>
> Then it just works right always and the compiler will help address
> Al's concern down the road.
I think if we wanted to do this with a new file operation, the best
way would be to do the copy_from_user()/copy_to_user() in the caller
as well.
We already do this inside of some subsystems, notably drivers/media/,
and it simplifies the implementation of the ioctl handler function
significantly. We obviously cannot do this in general, both because of
traditional drivers that have 16-bit command codes (drivers/tty and others)
and also because of drivers that by accident defined the commands
incorrectly and use the wrong type or the wrong direction in the
definition.
Arnd
^ permalink raw reply [flat|nested] 141+ messages in thread
* Re: [PATCH v2 05/17] compat_ioctl: move more drivers to generic_compat_ioctl_ptrarg
@ 2018-09-24 20:18 ` Arnd Bergmann
0 siblings, 0 replies; 141+ messages in thread
From: Arnd Bergmann @ 2018-09-24 20:18 UTC (permalink / raw)
To: Jason Gunthorpe
Cc: Darren Hart, Al Viro, Linux FS-devel Mailing List, gregkh,
David Miller, driverdevel, Linux Kernel Mailing List, qat-linux,
open list:HARDWARE RANDOM NUMBER GENERATOR CORE,
Linux Media Mailing List, dri-devel, linaro-mm-sig, amd-gfx,
open list:HID CORE LAYER, linux-iio, linux-rdma, linux-nvdimm,
linux-nvme, linux-pci, Platform Driver, linux-remoteproc,
sparclinux, linux-scsi, USB list, linux-fbdev, linuxppc-dev,
linux-btrfs, ceph-devel, linux-wireless, Networking
On Tue, Sep 18, 2018 at 7:59 PM Jason Gunthorpe <jgg@ziepe.ca> wrote:
>
> On Tue, Sep 18, 2018 at 10:51:08AM -0700, Darren Hart wrote:
> > On Fri, Sep 14, 2018 at 09:57:48PM +0100, Al Viro wrote:
> > > On Fri, Sep 14, 2018 at 01:35:06PM -0700, Darren Hart wrote:
> > >
> > > > Acked-by: Darren Hart (VMware) <dvhart@infradead.org>
> > > >
> > > > As for a longer term solution, would it be possible to init fops in such
> > > > a way that the compat_ioctl call defaults to generic_compat_ioctl_ptrarg
> > > > so we don't have to duplicate this boilerplate for every ioctl fops
> > > > structure?
> > >
> > > Bad idea, that... Because several years down the road somebody will add
> > > an ioctl that takes an unsigned int for argument. Without so much as looking
> > > at your magical mystery macro being used to initialize file_operations.
> >
> > Fair, being explicit in the declaration as it is currently may be
> > preferable then.
>
> It would be much cleaner and safer if you could arrange things to add
> something like this to struct file_operations:
>
> long (*ptr_ioctl) (struct file *, unsigned int, void __user *);
>
> Where the core code automatically converts the unsigned long to the
> void __user * as appropriate.
>
> Then it just works right always and the compiler will help address
> Al's concern down the road.
I think if we wanted to do this with a new file operation, the best
way would be to do the copy_from_user()/copy_to_user() in the caller
as well.
We already do this inside of some subsystems, notably drivers/media/,
and it simplifies the implementation of the ioctl handler function
significantly. We obviously cannot do this in general, both because of
traditional drivers that have 16-bit command codes (drivers/tty and others)
and also because of drivers that by accident defined the commands
incorrectly and use the wrong type or the wrong direction in the
definition.
Arnd
^ permalink raw reply [flat|nested] 141+ messages in thread
* Re: [PATCH v2 05/17] compat_ioctl: move more drivers to generic_compat_ioctl_ptrarg
2018-09-24 20:18 ` Arnd Bergmann
` (2 preceding siblings ...)
(?)
@ 2018-09-24 20:35 ` Jason Gunthorpe
-1 siblings, 0 replies; 141+ messages in thread
From: Jason Gunthorpe @ 2018-09-24 20:35 UTC (permalink / raw)
To: Arnd Bergmann
Cc: Darren Hart, Al Viro, Linux FS-devel Mailing List, gregkh,
David Miller, driverdevel, Linux Kernel Mailing List, qat-linux,
open list:HARDWARE RANDOM NUMBER GENERATOR CORE,
Linux Media Mailing List, dri-devel, linaro-mm-sig, amd-gfx,
open list:HID CORE LAYER, linux-iio, linux-rdma, linux-nvdimm,
linux-nvme, linux-pci, Platform Driver, linux-remoteproc,
sparclinux, linux-scsi, USB list, linux-fbdev, linuxppc-dev,
linux-btrfs, ceph-devel, linux-wireless, Networking
On Mon, Sep 24, 2018 at 10:18:52PM +0200, Arnd Bergmann wrote:
> On Tue, Sep 18, 2018 at 7:59 PM Jason Gunthorpe <jgg@ziepe.ca> wrote:
> >
> > On Tue, Sep 18, 2018 at 10:51:08AM -0700, Darren Hart wrote:
> > > On Fri, Sep 14, 2018 at 09:57:48PM +0100, Al Viro wrote:
> > > > On Fri, Sep 14, 2018 at 01:35:06PM -0700, Darren Hart wrote:
> > > >
> > > > > Acked-by: Darren Hart (VMware) <dvhart@infradead.org>
> > > > >
> > > > > As for a longer term solution, would it be possible to init fops in such
> > > > > a way that the compat_ioctl call defaults to generic_compat_ioctl_ptrarg
> > > > > so we don't have to duplicate this boilerplate for every ioctl fops
> > > > > structure?
> > > >
> > > > Bad idea, that... Because several years down the road somebody will add
> > > > an ioctl that takes an unsigned int for argument. Without so much as looking
> > > > at your magical mystery macro being used to initialize file_operations.
> > >
> > > Fair, being explicit in the declaration as it is currently may be
> > > preferable then.
> >
> > It would be much cleaner and safer if you could arrange things to add
> > something like this to struct file_operations:
> >
> > long (*ptr_ioctl) (struct file *, unsigned int, void __user *);
> >
> > Where the core code automatically converts the unsigned long to the
> > void __user * as appropriate.
> >
> > Then it just works right always and the compiler will help address
> > Al's concern down the road.
>
> I think if we wanted to do this with a new file operation, the best
> way would be to do the copy_from_user()/copy_to_user() in the caller
> as well.
>
> We already do this inside of some subsystems, notably drivers/media/,
> and it simplifies the implementation of the ioctl handler function
> significantly. We obviously cannot do this in general, both because of
> traditional drivers that have 16-bit command codes (drivers/tty and others)
> and also because of drivers that by accident defined the commands
> incorrectly and use the wrong type or the wrong direction in the
> definition.
That could work well, but the first idea could be done globally and
mechanically, while this would require very careful per-driver
investigation.
Particularly if the core code has worse performance.. ie due to
kmalloc calls or something.
I think it would make more sense to start by having the core do the
case to __user and then add another entry point to have the core do
the copy_from_user, and so on.
Jason
^ permalink raw reply [flat|nested] 141+ messages in thread
* Re: [PATCH v2 05/17] compat_ioctl: move more drivers to generic_compat_ioctl_ptrarg
@ 2018-09-24 20:35 ` Jason Gunthorpe
0 siblings, 0 replies; 141+ messages in thread
From: Jason Gunthorpe @ 2018-09-24 20:35 UTC (permalink / raw)
To: Arnd Bergmann
Cc: Darren Hart, Al Viro, Linux FS-devel Mailing List, gregkh,
David Miller, driverdevel, Linux Kernel Mailing List, qat-linux,
open list:HARDWARE RANDOM NUMBER GENERATOR CORE,
Linux Media Mailing List, dri-devel, linaro-mm-sig, amd-gfx,
open list:HID CORE LAYER, linux-iio, linux-rdma, linux-nvdimm,
linux-nvme, linux-pci
On Mon, Sep 24, 2018 at 10:18:52PM +0200, Arnd Bergmann wrote:
> On Tue, Sep 18, 2018 at 7:59 PM Jason Gunthorpe <jgg@ziepe.ca> wrote:
> >
> > On Tue, Sep 18, 2018 at 10:51:08AM -0700, Darren Hart wrote:
> > > On Fri, Sep 14, 2018 at 09:57:48PM +0100, Al Viro wrote:
> > > > On Fri, Sep 14, 2018 at 01:35:06PM -0700, Darren Hart wrote:
> > > >
> > > > > Acked-by: Darren Hart (VMware) <dvhart@infradead.org>
> > > > >
> > > > > As for a longer term solution, would it be possible to init fops in such
> > > > > a way that the compat_ioctl call defaults to generic_compat_ioctl_ptrarg
> > > > > so we don't have to duplicate this boilerplate for every ioctl fops
> > > > > structure?
> > > >
> > > > Bad idea, that... Because several years down the road somebody will add
> > > > an ioctl that takes an unsigned int for argument. Without so much as looking
> > > > at your magical mystery macro being used to initialize file_operations.
> > >
> > > Fair, being explicit in the declaration as it is currently may be
> > > preferable then.
> >
> > It would be much cleaner and safer if you could arrange things to add
> > something like this to struct file_operations:
> >
> > long (*ptr_ioctl) (struct file *, unsigned int, void __user *);
> >
> > Where the core code automatically converts the unsigned long to the
> > void __user * as appropriate.
> >
> > Then it just works right always and the compiler will help address
> > Al's concern down the road.
>
> I think if we wanted to do this with a new file operation, the best
> way would be to do the copy_from_user()/copy_to_user() in the caller
> as well.
>
> We already do this inside of some subsystems, notably drivers/media/,
> and it simplifies the implementation of the ioctl handler function
> significantly. We obviously cannot do this in general, both because of
> traditional drivers that have 16-bit command codes (drivers/tty and others)
> and also because of drivers that by accident defined the commands
> incorrectly and use the wrong type or the wrong direction in the
> definition.
That could work well, but the first idea could be done globally and
mechanically, while this would require very careful per-driver
investigation.
Particularly if the core code has worse performance.. ie due to
kmalloc calls or something.
I think it would make more sense to start by having the core do the
case to __user and then add another entry point to have the core do
the copy_from_user, and so on.
Jason
^ permalink raw reply [flat|nested] 141+ messages in thread
* [v2,05/17] compat_ioctl: move more drivers to generic_compat_ioctl_ptrarg
@ 2018-09-24 20:35 ` Jason Gunthorpe
0 siblings, 0 replies; 141+ messages in thread
From: Jason Gunthorpe @ 2018-09-24 20:35 UTC (permalink / raw)
To: Arnd Bergmann
Cc: Darren Hart, Al Viro, Linux FS-devel Mailing List, gregkh,
David Miller, driverdevel, Linux Kernel Mailing List, qat-linux,
open list:HARDWARE RANDOM NUMBER GENERATOR CORE,
Linux Media Mailing List, dri-devel, linaro-mm-sig, amd-gfx,
open list:HID CORE LAYER, linux-iio, linux-rdma, linux-nvdimm,
linux-nvme, linux-pci, Platform Driver, linux-remoteproc,
sparclinux, linux-scsi, USB list, linux-fbdev, linuxppc-dev,
linux-btrfs, ceph-devel, linux-wireless, Networking
On Mon, Sep 24, 2018 at 10:18:52PM +0200, Arnd Bergmann wrote:
> On Tue, Sep 18, 2018 at 7:59 PM Jason Gunthorpe <jgg@ziepe.ca> wrote:
> >
> > On Tue, Sep 18, 2018 at 10:51:08AM -0700, Darren Hart wrote:
> > > On Fri, Sep 14, 2018 at 09:57:48PM +0100, Al Viro wrote:
> > > > On Fri, Sep 14, 2018 at 01:35:06PM -0700, Darren Hart wrote:
> > > >
> > > > > Acked-by: Darren Hart (VMware) <dvhart@infradead.org>
> > > > >
> > > > > As for a longer term solution, would it be possible to init fops in such
> > > > > a way that the compat_ioctl call defaults to generic_compat_ioctl_ptrarg
> > > > > so we don't have to duplicate this boilerplate for every ioctl fops
> > > > > structure?
> > > >
> > > > Bad idea, that... Because several years down the road somebody will add
> > > > an ioctl that takes an unsigned int for argument. Without so much as looking
> > > > at your magical mystery macro being used to initialize file_operations.
> > >
> > > Fair, being explicit in the declaration as it is currently may be
> > > preferable then.
> >
> > It would be much cleaner and safer if you could arrange things to add
> > something like this to struct file_operations:
> >
> > long (*ptr_ioctl) (struct file *, unsigned int, void __user *);
> >
> > Where the core code automatically converts the unsigned long to the
> > void __user * as appropriate.
> >
> > Then it just works right always and the compiler will help address
> > Al's concern down the road.
>
> I think if we wanted to do this with a new file operation, the best
> way would be to do the copy_from_user()/copy_to_user() in the caller
> as well.
>
> We already do this inside of some subsystems, notably drivers/media/,
> and it simplifies the implementation of the ioctl handler function
> significantly. We obviously cannot do this in general, both because of
> traditional drivers that have 16-bit command codes (drivers/tty and others)
> and also because of drivers that by accident defined the commands
> incorrectly and use the wrong type or the wrong direction in the
> definition.
That could work well, but the first idea could be done globally and
mechanically, while this would require very careful per-driver
investigation.
Particularly if the core code has worse performance.. ie due to
kmalloc calls or something.
I think it would make more sense to start by having the core do the
case to __user and then add another entry point to have the core do
the copy_from_user, and so on.
Jason
^ permalink raw reply [flat|nested] 141+ messages in thread
* Re: [PATCH v2 05/17] compat_ioctl: move more drivers to generic_compat_ioctl_ptrarg
@ 2018-09-24 20:35 ` Jason Gunthorpe
0 siblings, 0 replies; 141+ messages in thread
From: Jason Gunthorpe @ 2018-09-24 20:35 UTC (permalink / raw)
To: Arnd Bergmann
Cc: Darren Hart, Al Viro, Linux FS-devel Mailing List, gregkh,
David Miller, driverdevel, Linux Kernel Mailing List, qat-linux,
open list:HARDWARE RANDOM NUMBER GENERATOR CORE,
Linux Media Mailing List, dri-devel, linaro-mm-sig, amd-gfx,
open list:HID CORE LAYER, linux-iio, linux-rdma, linux-nvdimm,
linux-nvme, linux-pci
On Mon, Sep 24, 2018 at 10:18:52PM +0200, Arnd Bergmann wrote:
> On Tue, Sep 18, 2018 at 7:59 PM Jason Gunthorpe <jgg@ziepe.ca> wrote:
> >
> > On Tue, Sep 18, 2018 at 10:51:08AM -0700, Darren Hart wrote:
> > > On Fri, Sep 14, 2018 at 09:57:48PM +0100, Al Viro wrote:
> > > > On Fri, Sep 14, 2018 at 01:35:06PM -0700, Darren Hart wrote:
> > > >
> > > > > Acked-by: Darren Hart (VMware) <dvhart@infradead.org>
> > > > >
> > > > > As for a longer term solution, would it be possible to init fops in such
> > > > > a way that the compat_ioctl call defaults to generic_compat_ioctl_ptrarg
> > > > > so we don't have to duplicate this boilerplate for every ioctl fops
> > > > > structure?
> > > >
> > > > Bad idea, that... Because several years down the road somebody will add
> > > > an ioctl that takes an unsigned int for argument. Without so much as looking
> > > > at your magical mystery macro being used to initialize file_operations.
> > >
> > > Fair, being explicit in the declaration as it is currently may be
> > > preferable then.
> >
> > It would be much cleaner and safer if you could arrange things to add
> > something like this to struct file_operations:
> >
> > long (*ptr_ioctl) (struct file *, unsigned int, void __user *);
> >
> > Where the core code automatically converts the unsigned long to the
> > void __user * as appropriate.
> >
> > Then it just works right always and the compiler will help address
> > Al's concern down the road.
>
> I think if we wanted to do this with a new file operation, the best
> way would be to do the copy_from_user()/copy_to_user() in the caller
> as well.
>
> We already do this inside of some subsystems, notably drivers/media/,
> and it simplifies the implementation of the ioctl handler function
> significantly. We obviously cannot do this in general, both because of
> traditional drivers that have 16-bit command codes (drivers/tty and others)
> and also because of drivers that by accident defined the commands
> incorrectly and use the wrong type or the wrong direction in the
> definition.
That could work well, but the first idea could be done globally and
mechanically, while this would require very careful per-driver
investigation.
Particularly if the core code has worse performance.. ie due to
kmalloc calls or something.
I think it would make more sense to start by having the core do the
case to __user and then add another entry point to have the core do
the copy_from_user, and so on.
Jason
^ permalink raw reply [flat|nested] 141+ messages in thread
* Re: [PATCH v2 05/17] compat_ioctl: move more drivers to generic_compat_ioctl_ptrarg
@ 2018-09-24 20:35 ` Jason Gunthorpe
0 siblings, 0 replies; 141+ messages in thread
From: Jason Gunthorpe @ 2018-09-24 20:35 UTC (permalink / raw)
To: Arnd Bergmann
Cc: Darren Hart, Al Viro, Linux FS-devel Mailing List, gregkh,
David Miller, driverdevel, Linux Kernel Mailing List, qat-linux,
open list:HARDWARE RANDOM NUMBER GENERATOR CORE,
Linux Media Mailing List, dri-devel, linaro-mm-sig, amd-gfx,
open list:HID CORE LAYER, linux-iio, linux-rdma, linux-nvdimm,
linux-nvme, linux-pci, Platform Driver, linux-remoteproc,
sparclinux, linux-scsi, USB list, linux-fbdev, linuxppc-dev,
linux-btrfs, ceph-devel, linux-wireless, Networking
On Mon, Sep 24, 2018 at 10:18:52PM +0200, Arnd Bergmann wrote:
> On Tue, Sep 18, 2018 at 7:59 PM Jason Gunthorpe <jgg@ziepe.ca> wrote:
> >
> > On Tue, Sep 18, 2018 at 10:51:08AM -0700, Darren Hart wrote:
> > > On Fri, Sep 14, 2018 at 09:57:48PM +0100, Al Viro wrote:
> > > > On Fri, Sep 14, 2018 at 01:35:06PM -0700, Darren Hart wrote:
> > > >
> > > > > Acked-by: Darren Hart (VMware) <dvhart@infradead.org>
> > > > >
> > > > > As for a longer term solution, would it be possible to init fops in such
> > > > > a way that the compat_ioctl call defaults to generic_compat_ioctl_ptrarg
> > > > > so we don't have to duplicate this boilerplate for every ioctl fops
> > > > > structure?
> > > >
> > > > Bad idea, that... Because several years down the road somebody will add
> > > > an ioctl that takes an unsigned int for argument. Without so much as looking
> > > > at your magical mystery macro being used to initialize file_operations.
> > >
> > > Fair, being explicit in the declaration as it is currently may be
> > > preferable then.
> >
> > It would be much cleaner and safer if you could arrange things to add
> > something like this to struct file_operations:
> >
> > long (*ptr_ioctl) (struct file *, unsigned int, void __user *);
> >
> > Where the core code automatically converts the unsigned long to the
> > void __user * as appropriate.
> >
> > Then it just works right always and the compiler will help address
> > Al's concern down the road.
>
> I think if we wanted to do this with a new file operation, the best
> way would be to do the copy_from_user()/copy_to_user() in the caller
> as well.
>
> We already do this inside of some subsystems, notably drivers/media/,
> and it simplifies the implementation of the ioctl handler function
> significantly. We obviously cannot do this in general, both because of
> traditional drivers that have 16-bit command codes (drivers/tty and others)
> and also because of drivers that by accident defined the commands
> incorrectly and use the wrong type or the wrong direction in the
> definition.
That could work well, but the first idea could be done globally and
mechanically, while this would require very careful per-driver
investigation.
Particularly if the core code has worse performance.. ie due to
kmalloc calls or something.
I think it would make more sense to start by having the core do the
case to __user and then add another entry point to have the core do
the copy_from_user, and so on.
Jason
^ permalink raw reply [flat|nested] 141+ messages in thread
* Re: [PATCH v2 05/17] compat_ioctl: move more drivers to generic_compat_ioctl_ptrarg
2018-09-24 20:35 ` Jason Gunthorpe
` (4 preceding siblings ...)
(?)
@ 2018-09-24 21:17 ` Arnd Bergmann
-1 siblings, 0 replies; 141+ messages in thread
From: Arnd Bergmann @ 2018-09-24 21:17 UTC (permalink / raw)
To: Jason Gunthorpe
Cc: linux-fbdev, linux-iio, linux-pci, linux-remoteproc, linux-nvme,
Platform Driver, sparclinux, driverdevel, linux-scsi,
linux-nvdimm, linux-rdma, qat-linux, amd-gfx,
open list:HID CORE LAYER, Darren Hart, Linux Media Mailing List,
linaro-mm-sig, dri-devel, ceph-devel, gregkh, USB list,
linux-wireless, Linux Kernel Mailing List,
open list:HARDWARE RANDOM NUMBER GENERATOR CORE, Networking,
Linux FS-devel Mailing List, linuxppc-dev, David Miller,
linux-btrfs, Al Viro
On Mon, Sep 24, 2018 at 10:35 PM Jason Gunthorpe <jgg@ziepe.ca> wrote:
> On Mon, Sep 24, 2018 at 10:18:52PM +0200, Arnd Bergmann wrote:
> > On Tue, Sep 18, 2018 at 7:59 PM Jason Gunthorpe <jgg@ziepe.ca> wrote:
> > > On Tue, Sep 18, 2018 at 10:51:08AM -0700, Darren Hart wrote:
> > > > On Fri, Sep 14, 2018 at 09:57:48PM +0100, Al Viro wrote:
> > > > > On Fri, Sep 14, 2018 at 01:35:06PM -0700, Darren Hart wrote:
> > We already do this inside of some subsystems, notably drivers/media/,
> > and it simplifies the implementation of the ioctl handler function
> > significantly. We obviously cannot do this in general, both because of
> > traditional drivers that have 16-bit command codes (drivers/tty and others)
> > and also because of drivers that by accident defined the commands
> > incorrectly and use the wrong type or the wrong direction in the
> > definition.
>
> That could work well, but the first idea could be done globally and
> mechanically, while this would require very careful per-driver
> investigation.
>
> Particularly if the core code has worse performance.. ie due to
> kmalloc calls or something.
>
> I think it would make more sense to start by having the core do the
> case to __user and then add another entry point to have the core do
> the copy_from_user, and so on.
Having six separate callback pointers to implement a single
system call seems a bit excessive though.
Arnd
_______________________________________________
Linux-nvdimm mailing list
Linux-nvdimm@lists.01.org
https://lists.01.org/mailman/listinfo/linux-nvdimm
^ permalink raw reply [flat|nested] 141+ messages in thread
* Re: [PATCH v2 05/17] compat_ioctl: move more drivers to generic_compat_ioctl_ptrarg
@ 2018-09-24 21:17 ` Arnd Bergmann
0 siblings, 0 replies; 141+ messages in thread
From: Arnd Bergmann @ 2018-09-24 21:17 UTC (permalink / raw)
To: Jason Gunthorpe
Cc: linux-fbdev-u79uwXL29TY76Z2rM5mHXA,
linux-iio-u79uwXL29TY76Z2rM5mHXA, linux-pci,
linux-remoteproc-u79uwXL29TY76Z2rM5mHXA,
linux-nvme-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r, Platform Driver,
sparclinux, driverdevel, linux-scsi,
linux-nvdimm-hn68Rpc1hR1g9hUCZPvPmw, linux-rdma,
qat-linux-ral2JQCrhuEAvxtiuMwx3w,
amd-gfx-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW,
open list:HID CORE LAYER, Darren Hart, Linux Media Mailing List,
linaro-mm-sig-cunTk1MwBs8s++Sfvej+rw, dri-devel, ceph-devel,
gregkh, USB list, linux-wireless
On Mon, Sep 24, 2018 at 10:35 PM Jason Gunthorpe <jgg@ziepe.ca> wrote:
> On Mon, Sep 24, 2018 at 10:18:52PM +0200, Arnd Bergmann wrote:
> > On Tue, Sep 18, 2018 at 7:59 PM Jason Gunthorpe <jgg@ziepe.ca> wrote:
> > > On Tue, Sep 18, 2018 at 10:51:08AM -0700, Darren Hart wrote:
> > > > On Fri, Sep 14, 2018 at 09:57:48PM +0100, Al Viro wrote:
> > > > > On Fri, Sep 14, 2018 at 01:35:06PM -0700, Darren Hart wrote:
> > We already do this inside of some subsystems, notably drivers/media/,
> > and it simplifies the implementation of the ioctl handler function
> > significantly. We obviously cannot do this in general, both because of
> > traditional drivers that have 16-bit command codes (drivers/tty and others)
> > and also because of drivers that by accident defined the commands
> > incorrectly and use the wrong type or the wrong direction in the
> > definition.
>
> That could work well, but the first idea could be done globally and
> mechanically, while this would require very careful per-driver
> investigation.
>
> Particularly if the core code has worse performance.. ie due to
> kmalloc calls or something.
>
> I think it would make more sense to start by having the core do the
> case to __user and then add another entry point to have the core do
> the copy_from_user, and so on.
Having six separate callback pointers to implement a single
system call seems a bit excessive though.
Arnd
^ permalink raw reply [flat|nested] 141+ messages in thread
* [v2,05/17] compat_ioctl: move more drivers to generic_compat_ioctl_ptrarg
@ 2018-09-24 21:17 ` Arnd Bergmann
0 siblings, 0 replies; 141+ messages in thread
From: Arnd Bergmann @ 2018-09-24 21:17 UTC (permalink / raw)
To: Jason Gunthorpe
Cc: Darren Hart, Al Viro, Linux FS-devel Mailing List, gregkh,
David Miller, driverdevel, Linux Kernel Mailing List, qat-linux,
open list:HARDWARE RANDOM NUMBER GENERATOR CORE,
Linux Media Mailing List, dri-devel, linaro-mm-sig, amd-gfx,
open list:HID CORE LAYER, linux-iio, linux-rdma, linux-nvdimm,
linux-nvme, linux-pci, Platform Driver, linux-remoteproc,
sparclinux, linux-scsi, USB list, linux-fbdev, linuxppc-dev,
linux-btrfs, ceph-devel, linux-wireless, Networking
On Mon, Sep 24, 2018 at 10:35 PM Jason Gunthorpe <jgg@ziepe.ca> wrote:
> On Mon, Sep 24, 2018 at 10:18:52PM +0200, Arnd Bergmann wrote:
> > On Tue, Sep 18, 2018 at 7:59 PM Jason Gunthorpe <jgg@ziepe.ca> wrote:
> > > On Tue, Sep 18, 2018 at 10:51:08AM -0700, Darren Hart wrote:
> > > > On Fri, Sep 14, 2018 at 09:57:48PM +0100, Al Viro wrote:
> > > > > On Fri, Sep 14, 2018 at 01:35:06PM -0700, Darren Hart wrote:
> > We already do this inside of some subsystems, notably drivers/media/,
> > and it simplifies the implementation of the ioctl handler function
> > significantly. We obviously cannot do this in general, both because of
> > traditional drivers that have 16-bit command codes (drivers/tty and others)
> > and also because of drivers that by accident defined the commands
> > incorrectly and use the wrong type or the wrong direction in the
> > definition.
>
> That could work well, but the first idea could be done globally and
> mechanically, while this would require very careful per-driver
> investigation.
>
> Particularly if the core code has worse performance.. ie due to
> kmalloc calls or something.
>
> I think it would make more sense to start by having the core do the
> case to __user and then add another entry point to have the core do
> the copy_from_user, and so on.
Having six separate callback pointers to implement a single
system call seems a bit excessive though.
Arnd
^ permalink raw reply [flat|nested] 141+ messages in thread
* Re: [PATCH v2 05/17] compat_ioctl: move more drivers to generic_compat_ioctl_ptrarg
@ 2018-09-24 21:17 ` Arnd Bergmann
0 siblings, 0 replies; 141+ messages in thread
From: Arnd Bergmann @ 2018-09-24 21:17 UTC (permalink / raw)
To: Jason Gunthorpe
Cc: linux-fbdev-u79uwXL29TY76Z2rM5mHXA,
linux-iio-u79uwXL29TY76Z2rM5mHXA, linux-pci,
linux-remoteproc-u79uwXL29TY76Z2rM5mHXA,
linux-nvme-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r, Platform Driver,
sparclinux, driverdevel, linux-scsi,
linux-nvdimm-hn68Rpc1hR1g9hUCZPvPmw, linux-rdma,
qat-linux-ral2JQCrhuEAvxtiuMwx3w,
amd-gfx-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW,
open list:HID CORE LAYER, Darren Hart, Linux Media Mailing List,
linaro-mm-sig-cunTk1MwBs8s++Sfvej+rw, dri-devel, ceph-devel,
gregkh, USB list, linux-wireless
On Mon, Sep 24, 2018 at 10:35 PM Jason Gunthorpe <jgg-uk2M96/98Pc@public.gmane.org> wrote:
> On Mon, Sep 24, 2018 at 10:18:52PM +0200, Arnd Bergmann wrote:
> > On Tue, Sep 18, 2018 at 7:59 PM Jason Gunthorpe <jgg-uk2M96/98Pc@public.gmane.org> wrote:
> > > On Tue, Sep 18, 2018 at 10:51:08AM -0700, Darren Hart wrote:
> > > > On Fri, Sep 14, 2018 at 09:57:48PM +0100, Al Viro wrote:
> > > > > On Fri, Sep 14, 2018 at 01:35:06PM -0700, Darren Hart wrote:
> > We already do this inside of some subsystems, notably drivers/media/,
> > and it simplifies the implementation of the ioctl handler function
> > significantly. We obviously cannot do this in general, both because of
> > traditional drivers that have 16-bit command codes (drivers/tty and others)
> > and also because of drivers that by accident defined the commands
> > incorrectly and use the wrong type or the wrong direction in the
> > definition.
>
> That could work well, but the first idea could be done globally and
> mechanically, while this would require very careful per-driver
> investigation.
>
> Particularly if the core code has worse performance.. ie due to
> kmalloc calls or something.
>
> I think it would make more sense to start by having the core do the
> case to __user and then add another entry point to have the core do
> the copy_from_user, and so on.
Having six separate callback pointers to implement a single
system call seems a bit excessive though.
Arnd
^ permalink raw reply [flat|nested] 141+ messages in thread
* Re: [PATCH v2 05/17] compat_ioctl: move more drivers to generic_compat_ioctl_ptrarg
@ 2018-09-24 21:17 ` Arnd Bergmann
0 siblings, 0 replies; 141+ messages in thread
From: Arnd Bergmann @ 2018-09-24 21:17 UTC (permalink / raw)
To: Jason Gunthorpe
Cc: linux-fbdev-u79uwXL29TY76Z2rM5mHXA,
linux-iio-u79uwXL29TY76Z2rM5mHXA, linux-pci,
linux-remoteproc-u79uwXL29TY76Z2rM5mHXA,
linux-nvme-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r, Platform Driver,
sparclinux, driverdevel, linux-scsi,
linux-nvdimm-hn68Rpc1hR1g9hUCZPvPmw, linux-rdma,
qat-linux-ral2JQCrhuEAvxtiuMwx3w,
amd-gfx-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW,
open list:HID CORE LAYER, Darren Hart, Linux Media Mailing List,
linaro-mm-sig-cunTk1MwBs8s++Sfvej+rw, dri-devel, ceph-devel,
gregkh, USB list, linux-wireless, Linux Kernel Mailing List
On Mon, Sep 24, 2018 at 10:35 PM Jason Gunthorpe <jgg-uk2M96/98Pc@public.gmane.org> wrote:
> On Mon, Sep 24, 2018 at 10:18:52PM +0200, Arnd Bergmann wrote:
> > On Tue, Sep 18, 2018 at 7:59 PM Jason Gunthorpe <jgg-uk2M96/98Pc@public.gmane.org> wrote:
> > > On Tue, Sep 18, 2018 at 10:51:08AM -0700, Darren Hart wrote:
> > > > On Fri, Sep 14, 2018 at 09:57:48PM +0100, Al Viro wrote:
> > > > > On Fri, Sep 14, 2018 at 01:35:06PM -0700, Darren Hart wrote:
> > We already do this inside of some subsystems, notably drivers/media/,
> > and it simplifies the implementation of the ioctl handler function
> > significantly. We obviously cannot do this in general, both because of
> > traditional drivers that have 16-bit command codes (drivers/tty and others)
> > and also because of drivers that by accident defined the commands
> > incorrectly and use the wrong type or the wrong direction in the
> > definition.
>
> That could work well, but the first idea could be done globally and
> mechanically, while this would require very careful per-driver
> investigation.
>
> Particularly if the core code has worse performance.. ie due to
> kmalloc calls or something.
>
> I think it would make more sense to start by having the core do the
> case to __user and then add another entry point to have the core do
> the copy_from_user, and so on.
Having six separate callback pointers to implement a single
system call seems a bit excessive though.
Arnd
^ permalink raw reply [flat|nested] 141+ messages in thread
* Re: [PATCH v2 05/17] compat_ioctl: move more drivers to generic_compat_ioctl_ptrarg
@ 2018-09-24 21:17 ` Arnd Bergmann
0 siblings, 0 replies; 141+ messages in thread
From: Arnd Bergmann @ 2018-09-24 21:17 UTC (permalink / raw)
To: Jason Gunthorpe
Cc: Darren Hart, Al Viro, Linux FS-devel Mailing List, gregkh,
David Miller, driverdevel, Linux Kernel Mailing List, qat-linux,
open list:HARDWARE RANDOM NUMBER GENERATOR CORE,
Linux Media Mailing List, dri-devel, linaro-mm-sig, amd-gfx,
open list:HID CORE LAYER, linux-iio, linux-rdma, linux-nvdimm,
linux-nvme, linux-pci, Platform Driver, linux-remoteproc,
sparclinux, linux-scsi, USB list, linux-fbdev, linuxppc-dev,
linux-btrfs, ceph-devel, linux-wireless, Networking
On Mon, Sep 24, 2018 at 10:35 PM Jason Gunthorpe <jgg@ziepe.ca> wrote:
> On Mon, Sep 24, 2018 at 10:18:52PM +0200, Arnd Bergmann wrote:
> > On Tue, Sep 18, 2018 at 7:59 PM Jason Gunthorpe <jgg@ziepe.ca> wrote:
> > > On Tue, Sep 18, 2018 at 10:51:08AM -0700, Darren Hart wrote:
> > > > On Fri, Sep 14, 2018 at 09:57:48PM +0100, Al Viro wrote:
> > > > > On Fri, Sep 14, 2018 at 01:35:06PM -0700, Darren Hart wrote:
> > We already do this inside of some subsystems, notably drivers/media/,
> > and it simplifies the implementation of the ioctl handler function
> > significantly. We obviously cannot do this in general, both because of
> > traditional drivers that have 16-bit command codes (drivers/tty and others)
> > and also because of drivers that by accident defined the commands
> > incorrectly and use the wrong type or the wrong direction in the
> > definition.
>
> That could work well, but the first idea could be done globally and
> mechanically, while this would require very careful per-driver
> investigation.
>
> Particularly if the core code has worse performance.. ie due to
> kmalloc calls or something.
>
> I think it would make more sense to start by having the core do the
> case to __user and then add another entry point to have the core do
> the copy_from_user, and so on.
Having six separate callback pointers to implement a single
system call seems a bit excessive though.
Arnd
^ permalink raw reply [flat|nested] 141+ messages in thread
* Re: [PATCH v2 05/17] compat_ioctl: move more drivers to generic_compat_ioctl_ptrarg
@ 2018-09-24 21:17 ` Arnd Bergmann
0 siblings, 0 replies; 141+ messages in thread
From: Arnd Bergmann @ 2018-09-24 21:17 UTC (permalink / raw)
To: Jason Gunthorpe
Cc: Darren Hart, Al Viro, Linux FS-devel Mailing List, gregkh,
David Miller, driverdevel, Linux Kernel Mailing List, qat-linux,
open list:HARDWARE RANDOM NUMBER GENERATOR CORE,
Linux Media Mailing List, dri-devel, linaro-mm-sig, amd-gfx,
open list:HID CORE LAYER, linux-iio, linux-rdma, linux-nvdimm,
linux-nvme, linux-pci, Platform Driver, linux-remoteproc,
sparclinux, linux-scsi, USB list, linux-fbdev, linuxppc-dev,
linux-btrfs, ceph-devel, linux-wireless, Networking
On Mon, Sep 24, 2018 at 10:35 PM Jason Gunthorpe <jgg@ziepe.ca> wrote:
> On Mon, Sep 24, 2018 at 10:18:52PM +0200, Arnd Bergmann wrote:
> > On Tue, Sep 18, 2018 at 7:59 PM Jason Gunthorpe <jgg@ziepe.ca> wrote:
> > > On Tue, Sep 18, 2018 at 10:51:08AM -0700, Darren Hart wrote:
> > > > On Fri, Sep 14, 2018 at 09:57:48PM +0100, Al Viro wrote:
> > > > > On Fri, Sep 14, 2018 at 01:35:06PM -0700, Darren Hart wrote:
> > We already do this inside of some subsystems, notably drivers/media/,
> > and it simplifies the implementation of the ioctl handler function
> > significantly. We obviously cannot do this in general, both because of
> > traditional drivers that have 16-bit command codes (drivers/tty and others)
> > and also because of drivers that by accident defined the commands
> > incorrectly and use the wrong type or the wrong direction in the
> > definition.
>
> That could work well, but the first idea could be done globally and
> mechanically, while this would require very careful per-driver
> investigation.
>
> Particularly if the core code has worse performance.. ie due to
> kmalloc calls or something.
>
> I think it would make more sense to start by having the core do the
> case to __user and then add another entry point to have the core do
> the copy_from_user, and so on.
Having six separate callback pointers to implement a single
system call seems a bit excessive though.
Arnd
^ permalink raw reply [flat|nested] 141+ messages in thread
* Re: [PATCH v2 05/17] compat_ioctl: move more drivers to generic_compat_ioctl_ptrarg
2018-09-12 15:08 ` Arnd Bergmann
` (3 preceding siblings ...)
(?)
@ 2018-09-17 9:33 ` Jonathan Cameron
-1 siblings, 0 replies; 141+ messages in thread
From: Jonathan Cameron @ 2018-09-17 9:33 UTC (permalink / raw)
To: Arnd Bergmann
Cc: linux-fbdev, linux-iio, linux-pci, linux-remoteproc, linux-nvme,
platform-driver-x86, sparclinux, devel, linux-scsi, linux-nvdimm,
linux-rdma, qat-linux, amd-gfx, linux-input, linux-media,
linaro-mm-sig, dri-devel, ceph-devel, Greg Kroah-Hartman,
linux-usb, linux-wireless, linux-kernel, linux-crypto, netdev,
linux-fsdevel, linuxppc-dev, David S. Miller, linux-btrfs, viro
On Wed, 12 Sep 2018 17:08:52 +0200
Arnd Bergmann <arnd@arndb.de> wrote:
> The .ioctl and .compat_ioctl file operations have the same prototype so
> they can both point to the same function, which works great almost all
> the time when all the commands are compatible.
>
> One exception is the s390 architecture, where a compat pointer is only
> 31 bit wide, and converting it into a 64-bit pointer requires calling
> compat_ptr(). Most drivers here will ever run in s390, but since we now
> have a generic helper for it, it's easy enough to use it consistently.
>
> I double-checked all these drivers to ensure that all ioctl arguments
> are used as pointers or are ignored, but are not interpreted as integer
> values.
>
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
> ---
For IIO part.
Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Thanks,
> diff --git a/drivers/iio/industrialio-core.c b/drivers/iio/industrialio-core.c
> index a062cfddc5af..22844b94b0e9 100644
> --- a/drivers/iio/industrialio-core.c
> +++ b/drivers/iio/industrialio-core.c
> @@ -1630,7 +1630,7 @@ static const struct file_operations iio_buffer_fileops = {
> .owner = THIS_MODULE,
> .llseek = noop_llseek,
> .unlocked_ioctl = iio_ioctl,
> - .compat_ioctl = iio_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
_______________________________________________
Linux-nvdimm mailing list
Linux-nvdimm@lists.01.org
https://lists.01.org/mailman/listinfo/linux-nvdimm
^ permalink raw reply [flat|nested] 141+ messages in thread
* Re: [PATCH v2 05/17] compat_ioctl: move more drivers to generic_compat_ioctl_ptrarg
@ 2018-09-17 9:33 ` Jonathan Cameron
0 siblings, 0 replies; 141+ messages in thread
From: Jonathan Cameron @ 2018-09-17 9:33 UTC (permalink / raw)
To: Arnd Bergmann
Cc: linux-fbdev-u79uwXL29TY76Z2rM5mHXA,
linux-iio-u79uwXL29TY76Z2rM5mHXA,
linux-pci-u79uwXL29TY76Z2rM5mHXA,
linux-remoteproc-u79uwXL29TY76Z2rM5mHXA,
linux-nvme-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
platform-driver-x86-u79uwXL29TY76Z2rM5mHXA,
sparclinux-u79uwXL29TY76Z2rM5mHXA,
devel-gWbeCf7V1WCQmaza687I9mD2FQJk+8+b,
linux-scsi-u79uwXL29TY76Z2rM5mHXA,
linux-nvdimm-hn68Rpc1hR1g9hUCZPvPmw,
linux-rdma-u79uwXL29TY76Z2rM5mHXA,
qat-linux-ral2JQCrhuEAvxtiuMwx3w,
amd-gfx-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW,
linux-input-u79uwXL29TY76Z2rM5mHXA,
linux-media-u79uwXL29TY76Z2rM5mHXA,
linaro-mm-sig-cunTk1MwBs8s++Sfvej+rw,
dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW,
ceph-devel-u79uwXL29TY76Z2rM5mHXA, Greg Kroah-Hartman,
linux-usb-u79uwXL29TY76Z2rM5mHXA,
linux-wireless-u79uwXL29TY76Z2rM5mHXA,
linux-kernel-u79uwXL29TY76Z2rM5mHXA,
linux-crypto-u79uwXL29TY76Z2rM5mHXA,
netdev-u79uwXL29TY76Z2rM5mHXA,
linux-fsdevel-u79uwXL29TY76Z2rM5mHXA,
linuxppc-dev-uLR06cmDAlY/bJ5BZ2RsiQ, David S. Miller,
linux-btrfs-u79uwXL29TY76Z2rM5mHXA,
viro-RmSDqhL/yNMiFSDQTTA3OLVCufUGDwFn
On Wed, 12 Sep 2018 17:08:52 +0200
Arnd Bergmann <arnd@arndb.de> wrote:
> The .ioctl and .compat_ioctl file operations have the same prototype so
> they can both point to the same function, which works great almost all
> the time when all the commands are compatible.
>
> One exception is the s390 architecture, where a compat pointer is only
> 31 bit wide, and converting it into a 64-bit pointer requires calling
> compat_ptr(). Most drivers here will ever run in s390, but since we now
> have a generic helper for it, it's easy enough to use it consistently.
>
> I double-checked all these drivers to ensure that all ioctl arguments
> are used as pointers or are ignored, but are not interpreted as integer
> values.
>
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
> ---
For IIO part.
Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Thanks,
> diff --git a/drivers/iio/industrialio-core.c b/drivers/iio/industrialio-core.c
> index a062cfddc5af..22844b94b0e9 100644
> --- a/drivers/iio/industrialio-core.c
> +++ b/drivers/iio/industrialio-core.c
> @@ -1630,7 +1630,7 @@ static const struct file_operations iio_buffer_fileops = {
> .owner = THIS_MODULE,
> .llseek = noop_llseek,
> .unlocked_ioctl = iio_ioctl,
> - .compat_ioctl = iio_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
^ permalink raw reply [flat|nested] 141+ messages in thread
* [v2,05/17] compat_ioctl: move more drivers to generic_compat_ioctl_ptrarg
@ 2018-09-17 9:33 ` Jonathan Cameron
0 siblings, 0 replies; 141+ messages in thread
From: Jonathan Cameron @ 2018-09-17 9:33 UTC (permalink / raw)
To: Arnd Bergmann
Cc: viro, linux-fsdevel, Greg Kroah-Hartman, David S. Miller, devel,
linux-kernel, qat-linux, linux-crypto, linux-media, dri-devel,
linaro-mm-sig, amd-gfx, linux-input, linux-iio, linux-rdma,
linux-nvdimm, linux-nvme, linux-pci, platform-driver-x86,
linux-remoteproc, sparclinux, linux-scsi, linux-usb, linux-fbdev,
linuxppc-dev, linux-btrfs, ceph-devel, linux-wireless, netdev
On Wed, 12 Sep 2018 17:08:52 +0200
Arnd Bergmann <arnd@arndb.de> wrote:
> The .ioctl and .compat_ioctl file operations have the same prototype so
> they can both point to the same function, which works great almost all
> the time when all the commands are compatible.
>
> One exception is the s390 architecture, where a compat pointer is only
> 31 bit wide, and converting it into a 64-bit pointer requires calling
> compat_ptr(). Most drivers here will ever run in s390, but since we now
> have a generic helper for it, it's easy enough to use it consistently.
>
> I double-checked all these drivers to ensure that all ioctl arguments
> are used as pointers or are ignored, but are not interpreted as integer
> values.
>
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
> ---
For IIO part.
Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Thanks,
> diff --git a/drivers/iio/industrialio-core.c b/drivers/iio/industrialio-core.c
> index a062cfddc5af..22844b94b0e9 100644
> --- a/drivers/iio/industrialio-core.c
> +++ b/drivers/iio/industrialio-core.c
> @@ -1630,7 +1630,7 @@ static const struct file_operations iio_buffer_fileops = {
> .owner = THIS_MODULE,
> .llseek = noop_llseek,
> .unlocked_ioctl = iio_ioctl,
> - .compat_ioctl = iio_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
^ permalink raw reply [flat|nested] 141+ messages in thread
* Re: [PATCH v2 05/17] compat_ioctl: move more drivers to generic_compat_ioctl_ptrarg
@ 2018-09-17 9:33 ` Jonathan Cameron
0 siblings, 0 replies; 141+ messages in thread
From: Jonathan Cameron @ 2018-09-17 9:33 UTC (permalink / raw)
To: Arnd Bergmann
Cc: linux-fbdev-u79uwXL29TY76Z2rM5mHXA,
linux-iio-u79uwXL29TY76Z2rM5mHXA,
linux-pci-u79uwXL29TY76Z2rM5mHXA,
linux-remoteproc-u79uwXL29TY76Z2rM5mHXA,
linux-nvme-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
platform-driver-x86-u79uwXL29TY76Z2rM5mHXA,
sparclinux-u79uwXL29TY76Z2rM5mHXA,
devel-gWbeCf7V1WCQmaza687I9mD2FQJk+8+b,
linux-scsi-u79uwXL29TY76Z2rM5mHXA,
linux-nvdimm-hn68Rpc1hR1g9hUCZPvPmw,
linux-rdma-u79uwXL29TY76Z2rM5mHXA,
qat-linux-ral2JQCrhuEAvxtiuMwx3w,
amd-gfx-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW,
linux-input-u79uwXL29TY76Z2rM5mHXA,
linux-media-u79uwXL29TY76Z2rM5mHXA,
linaro-mm-sig-cunTk1MwBs8s++Sfvej+rw,
dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW,
ceph-devel-u79uwXL29TY76Z2rM5mHXA, Greg Kroah-Hartman,
linux-usb-u79uwXL29TY76Z2rM5mHXA,
linux-wireless-u79uwXL29TY76Z2rM5mHXA,
linux-kernel-u79uwXL29TY76Z2rM5mHXA,
linux-crypto-u79uwXL29TY76Z2rM5mHXA,
netdev-u79uwXL29TY76Z2rM5mHXA,
linux-fsdevel-u79uwXL29TY76Z2rM5mHXA,
linuxppc-dev-uLR06cmDAlY/bJ5BZ2RsiQ, David S. Miller,
linux-btrfs-u79uwXL29TY76Z2rM5mHXA,
viro-RmSDqhL/yNMiFSDQTTA3OLVCufUGDwFn
On Wed, 12 Sep 2018 17:08:52 +0200
Arnd Bergmann <arnd-r2nGTMty4D4@public.gmane.org> wrote:
> The .ioctl and .compat_ioctl file operations have the same prototype so
> they can both point to the same function, which works great almost all
> the time when all the commands are compatible.
>
> One exception is the s390 architecture, where a compat pointer is only
> 31 bit wide, and converting it into a 64-bit pointer requires calling
> compat_ptr(). Most drivers here will ever run in s390, but since we now
> have a generic helper for it, it's easy enough to use it consistently.
>
> I double-checked all these drivers to ensure that all ioctl arguments
> are used as pointers or are ignored, but are not interpreted as integer
> values.
>
> Signed-off-by: Arnd Bergmann <arnd-r2nGTMty4D4@public.gmane.org>
> ---
For IIO part.
Acked-by: Jonathan Cameron <Jonathan.Cameron-hv44wF8Li93QT0dZR+AlfA@public.gmane.org>
Thanks,
> diff --git a/drivers/iio/industrialio-core.c b/drivers/iio/industrialio-core.c
> index a062cfddc5af..22844b94b0e9 100644
> --- a/drivers/iio/industrialio-core.c
> +++ b/drivers/iio/industrialio-core.c
> @@ -1630,7 +1630,7 @@ static const struct file_operations iio_buffer_fileops = {
> .owner = THIS_MODULE,
> .llseek = noop_llseek,
> .unlocked_ioctl = iio_ioctl,
> - .compat_ioctl = iio_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
^ permalink raw reply [flat|nested] 141+ messages in thread
* Re: [PATCH v2 05/17] compat_ioctl: move more drivers to generic_compat_ioctl_ptrarg
@ 2018-09-17 9:33 ` Jonathan Cameron
0 siblings, 0 replies; 141+ messages in thread
From: Jonathan Cameron @ 2018-09-17 9:33 UTC (permalink / raw)
To: Arnd Bergmann
Cc: viro, linux-fsdevel, Greg Kroah-Hartman, David S. Miller, devel,
linux-kernel, qat-linux, linux-crypto, linux-media, dri-devel,
linaro-mm-sig, amd-gfx, linux-input, linux-iio, linux-rdma,
linux-nvdimm, linux-nvme, linux-pci, platform-driver-x86,
linux-remoteproc, sparclinux, linux-scsi, linux-usb, linux-fbdev,
linuxppc-dev, linux-btrfs, ceph-devel, linux-wireless, netdev
On Wed, 12 Sep 2018 17:08:52 +0200
Arnd Bergmann <arnd@arndb.de> wrote:
> The .ioctl and .compat_ioctl file operations have the same prototype so
> they can both point to the same function, which works great almost all
> the time when all the commands are compatible.
>
> One exception is the s390 architecture, where a compat pointer is only
> 31 bit wide, and converting it into a 64-bit pointer requires calling
> compat_ptr(). Most drivers here will ever run in s390, but since we now
> have a generic helper for it, it's easy enough to use it consistently.
>
> I double-checked all these drivers to ensure that all ioctl arguments
> are used as pointers or are ignored, but are not interpreted as integer
> values.
>
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
> ---
For IIO part.
Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Thanks,
> diff --git a/drivers/iio/industrialio-core.c b/drivers/iio/industrialio-core.c
> index a062cfddc5af..22844b94b0e9 100644
> --- a/drivers/iio/industrialio-core.c
> +++ b/drivers/iio/industrialio-core.c
> @@ -1630,7 +1630,7 @@ static const struct file_operations iio_buffer_fileops = {
> .owner = THIS_MODULE,
> .llseek = noop_llseek,
> .unlocked_ioctl = iio_ioctl,
> - .compat_ioctl = iio_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
^ permalink raw reply [flat|nested] 141+ messages in thread
* Re: [PATCH v2 05/17] compat_ioctl: move more drivers to generic_compat_ioctl_ptrarg
@ 2018-09-17 9:33 ` Jonathan Cameron
0 siblings, 0 replies; 141+ messages in thread
From: Jonathan Cameron @ 2018-09-17 9:33 UTC (permalink / raw)
To: Arnd Bergmann
Cc: viro, linux-fsdevel, Greg Kroah-Hartman, David S. Miller, devel,
linux-kernel, qat-linux, linux-crypto, linux-media, dri-devel,
linaro-mm-sig, amd-gfx, linux-input, linux-iio, linux-rdma,
linux-nvdimm, linux-nvme, linux-pci, platform-driver-x86,
linux-remoteproc, sparclinux, linux-scsi, linux-usb, linux-fbdev,
linuxppc-dev, linux-btrfs, ceph-devel, linux-wireless, netdev
On Wed, 12 Sep 2018 17:08:52 +0200
Arnd Bergmann <arnd@arndb.de> wrote:
> The .ioctl and .compat_ioctl file operations have the same prototype so
> they can both point to the same function, which works great almost all
> the time when all the commands are compatible.
>
> One exception is the s390 architecture, where a compat pointer is only
> 31 bit wide, and converting it into a 64-bit pointer requires calling
> compat_ptr(). Most drivers here will ever run in s390, but since we now
> have a generic helper for it, it's easy enough to use it consistently.
>
> I double-checked all these drivers to ensure that all ioctl arguments
> are used as pointers or are ignored, but are not interpreted as integer
> values.
>
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
> ---
For IIO part.
Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Thanks,
> diff --git a/drivers/iio/industrialio-core.c b/drivers/iio/industrialio-core.c
> index a062cfddc5af..22844b94b0e9 100644
> --- a/drivers/iio/industrialio-core.c
> +++ b/drivers/iio/industrialio-core.c
> @@ -1630,7 +1630,7 @@ static const struct file_operations iio_buffer_fileops = {
> .owner = THIS_MODULE,
> .llseek = noop_llseek,
> .unlocked_ioctl = iio_ioctl,
> - .compat_ioctl = iio_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
^ permalink raw reply [flat|nested] 141+ messages in thread
* Re: [PATCH v2 05/17] compat_ioctl: move more drivers to generic_compat_ioctl_ptrarg
2018-09-12 15:08 ` Arnd Bergmann
` (3 preceding siblings ...)
(?)
@ 2018-10-06 7:05 ` Bjorn Andersson
-1 siblings, 0 replies; 141+ messages in thread
From: Bjorn Andersson @ 2018-10-06 7:05 UTC (permalink / raw)
To: Arnd Bergmann
Cc: linux-fbdev, linux-iio, linux-pci, linux-remoteproc, linux-nvme,
platform-driver-x86, sparclinux, devel, linux-scsi, linux-nvdimm,
linux-rdma, qat-linux, amd-gfx, linux-input, linux-media,
linaro-mm-sig, dri-devel, ceph-devel, Greg Kroah-Hartman,
linux-usb, linux-wireless, linux-kernel, linux-crypto, netdev,
linux-fsdevel, linuxppc-dev, David S. Miller, linux-btrfs, viro
On Wed 12 Sep 08:08 PDT 2018, Arnd Bergmann wrote:
[..]
> diff --git a/drivers/rpmsg/rpmsg_char.c b/drivers/rpmsg/rpmsg_char.c
> index a76b963a7e50..02aefb2b2d47 100644
> --- a/drivers/rpmsg/rpmsg_char.c
> +++ b/drivers/rpmsg/rpmsg_char.c
> @@ -285,7 +285,7 @@ static const struct file_operations rpmsg_eptdev_fops = {
> .write = rpmsg_eptdev_write,
> .poll = rpmsg_eptdev_poll,
> .unlocked_ioctl = rpmsg_eptdev_ioctl,
> - .compat_ioctl = rpmsg_eptdev_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static ssize_t name_show(struct device *dev, struct device_attribute *attr,
> @@ -446,7 +446,7 @@ static const struct file_operations rpmsg_ctrldev_fops = {
> .open = rpmsg_ctrldev_open,
> .release = rpmsg_ctrldev_release,
> .unlocked_ioctl = rpmsg_ctrldev_ioctl,
> - .compat_ioctl = rpmsg_ctrldev_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
For rpmsg part
Acked-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Regards,
Bjorn
_______________________________________________
Linux-nvdimm mailing list
Linux-nvdimm@lists.01.org
https://lists.01.org/mailman/listinfo/linux-nvdimm
^ permalink raw reply [flat|nested] 141+ messages in thread
* Re: [PATCH v2 05/17] compat_ioctl: move more drivers to generic_compat_ioctl_ptrarg
@ 2018-10-06 7:05 ` Bjorn Andersson
0 siblings, 0 replies; 141+ messages in thread
From: Bjorn Andersson @ 2018-10-06 7:05 UTC (permalink / raw)
To: Arnd Bergmann
Cc: linux-fbdev, linux-iio, linux-pci, linux-remoteproc, linux-nvme,
platform-driver-x86, sparclinux, devel, linux-scsi, linux-nvdimm,
linux-rdma, qat-linux, amd-gfx, linux-input, linux-media,
linaro-mm-sig, dri-devel, ceph-devel, Greg Kroah-Hartman,
linux-usb, linux-wireless, linux-kernel, linux-crypto, netdev,
linux-fsdevel, linuxppc-dev, David S. Miller, linux-btrfs, viro
On Wed 12 Sep 08:08 PDT 2018, Arnd Bergmann wrote:
[..]
> diff --git a/drivers/rpmsg/rpmsg_char.c b/drivers/rpmsg/rpmsg_char.c
> index a76b963a7e50..02aefb2b2d47 100644
> --- a/drivers/rpmsg/rpmsg_char.c
> +++ b/drivers/rpmsg/rpmsg_char.c
> @@ -285,7 +285,7 @@ static const struct file_operations rpmsg_eptdev_fops = {
> .write = rpmsg_eptdev_write,
> .poll = rpmsg_eptdev_poll,
> .unlocked_ioctl = rpmsg_eptdev_ioctl,
> - .compat_ioctl = rpmsg_eptdev_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static ssize_t name_show(struct device *dev, struct device_attribute *attr,
> @@ -446,7 +446,7 @@ static const struct file_operations rpmsg_ctrldev_fops = {
> .open = rpmsg_ctrldev_open,
> .release = rpmsg_ctrldev_release,
> .unlocked_ioctl = rpmsg_ctrldev_ioctl,
> - .compat_ioctl = rpmsg_ctrldev_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
For rpmsg part
Acked-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Regards,
Bjorn
^ permalink raw reply [flat|nested] 141+ messages in thread
* Re: [PATCH v2 05/17] compat_ioctl: move more drivers to generic_compat_ioctl_ptrarg
@ 2018-10-06 7:05 ` Bjorn Andersson
0 siblings, 0 replies; 141+ messages in thread
From: Bjorn Andersson @ 2018-10-06 7:05 UTC (permalink / raw)
To: Arnd Bergmann
Cc: linux-fbdev-u79uwXL29TY76Z2rM5mHXA,
linux-iio-u79uwXL29TY76Z2rM5mHXA,
linux-pci-u79uwXL29TY76Z2rM5mHXA,
linux-remoteproc-u79uwXL29TY76Z2rM5mHXA,
linux-nvme-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
platform-driver-x86-u79uwXL29TY76Z2rM5mHXA,
sparclinux-u79uwXL29TY76Z2rM5mHXA,
devel-gWbeCf7V1WCQmaza687I9mD2FQJk+8+b,
linux-scsi-u79uwXL29TY76Z2rM5mHXA,
linux-nvdimm-hn68Rpc1hR1g9hUCZPvPmw,
linux-rdma-u79uwXL29TY76Z2rM5mHXA,
qat-linux-ral2JQCrhuEAvxtiuMwx3w,
amd-gfx-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW,
linux-input-u79uwXL29TY76Z2rM5mHXA,
linux-media-u79uwXL29TY76Z2rM5mHXA,
linaro-mm-sig-cunTk1MwBs8s++Sfvej+rw,
dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW,
ceph-devel-u79uwXL29TY76Z2rM5mHXA, Greg Kroah-Hartman,
linux-usb-u79uwXL29TY76Z2rM5mHXA,
linux-wireless-u79uwXL29TY76Z2rM5mHXA,
linux-kernel-u79uwXL29TY76Z2rM5mHXA,
linux-crypto-u79uwXL29TY76Z2rM5mHXA,
netdev-u79uwXL29TY76Z2rM5mHXA,
linux-fsdevel-u79uwXL29TY76Z2rM5mHXA,
linuxppc-dev-uLR06cmDAlY/bJ5BZ2RsiQ, David S. Miller,
linux-btrfs-u79uwXL29TY76Z2rM5mHXA,
viro-RmSDqhL/yNMiFSDQTTA3OLVCufUGDwFn
On Wed 12 Sep 08:08 PDT 2018, Arnd Bergmann wrote:
[..]
> diff --git a/drivers/rpmsg/rpmsg_char.c b/drivers/rpmsg/rpmsg_char.c
> index a76b963a7e50..02aefb2b2d47 100644
> --- a/drivers/rpmsg/rpmsg_char.c
> +++ b/drivers/rpmsg/rpmsg_char.c
> @@ -285,7 +285,7 @@ static const struct file_operations rpmsg_eptdev_fops = {
> .write = rpmsg_eptdev_write,
> .poll = rpmsg_eptdev_poll,
> .unlocked_ioctl = rpmsg_eptdev_ioctl,
> - .compat_ioctl = rpmsg_eptdev_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static ssize_t name_show(struct device *dev, struct device_attribute *attr,
> @@ -446,7 +446,7 @@ static const struct file_operations rpmsg_ctrldev_fops = {
> .open = rpmsg_ctrldev_open,
> .release = rpmsg_ctrldev_release,
> .unlocked_ioctl = rpmsg_ctrldev_ioctl,
> - .compat_ioctl = rpmsg_ctrldev_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
For rpmsg part
Acked-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Regards,
Bjorn
^ permalink raw reply [flat|nested] 141+ messages in thread
* [v2,05/17] compat_ioctl: move more drivers to generic_compat_ioctl_ptrarg
@ 2018-10-06 7:05 ` Bjorn Andersson
0 siblings, 0 replies; 141+ messages in thread
From: Bjorn Andersson @ 2018-10-06 7:05 UTC (permalink / raw)
To: Arnd Bergmann
Cc: viro, linux-fsdevel, Greg Kroah-Hartman, David S. Miller, devel,
linux-kernel, qat-linux, linux-crypto, linux-media, dri-devel,
linaro-mm-sig, amd-gfx, linux-input, linux-iio, linux-rdma,
linux-nvdimm, linux-nvme, linux-pci, platform-driver-x86,
linux-remoteproc, sparclinux, linux-scsi, linux-usb, linux-fbdev,
linuxppc-dev, linux-btrfs, ceph-devel, linux-wireless, netdev
On Wed 12 Sep 08:08 PDT 2018, Arnd Bergmann wrote:
[..]
> diff --git a/drivers/rpmsg/rpmsg_char.c b/drivers/rpmsg/rpmsg_char.c
> index a76b963a7e50..02aefb2b2d47 100644
> --- a/drivers/rpmsg/rpmsg_char.c
> +++ b/drivers/rpmsg/rpmsg_char.c
> @@ -285,7 +285,7 @@ static const struct file_operations rpmsg_eptdev_fops = {
> .write = rpmsg_eptdev_write,
> .poll = rpmsg_eptdev_poll,
> .unlocked_ioctl = rpmsg_eptdev_ioctl,
> - .compat_ioctl = rpmsg_eptdev_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static ssize_t name_show(struct device *dev, struct device_attribute *attr,
> @@ -446,7 +446,7 @@ static const struct file_operations rpmsg_ctrldev_fops = {
> .open = rpmsg_ctrldev_open,
> .release = rpmsg_ctrldev_release,
> .unlocked_ioctl = rpmsg_ctrldev_ioctl,
> - .compat_ioctl = rpmsg_ctrldev_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
For rpmsg part
Acked-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Regards,
Bjorn
^ permalink raw reply [flat|nested] 141+ messages in thread
* Re: [PATCH v2 05/17] compat_ioctl: move more drivers to generic_compat_ioctl_ptrarg
@ 2018-10-06 7:05 ` Bjorn Andersson
0 siblings, 0 replies; 141+ messages in thread
From: Bjorn Andersson @ 2018-10-06 7:05 UTC (permalink / raw)
To: Arnd Bergmann
Cc: linux-fbdev-u79uwXL29TY76Z2rM5mHXA,
linux-iio-u79uwXL29TY76Z2rM5mHXA,
linux-pci-u79uwXL29TY76Z2rM5mHXA,
linux-remoteproc-u79uwXL29TY76Z2rM5mHXA,
linux-nvme-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
platform-driver-x86-u79uwXL29TY76Z2rM5mHXA,
sparclinux-u79uwXL29TY76Z2rM5mHXA,
devel-gWbeCf7V1WCQmaza687I9mD2FQJk+8+b,
linux-scsi-u79uwXL29TY76Z2rM5mHXA,
linux-nvdimm-hn68Rpc1hR1g9hUCZPvPmw,
linux-rdma-u79uwXL29TY76Z2rM5mHXA,
qat-linux-ral2JQCrhuEAvxtiuMwx3w,
amd-gfx-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW,
linux-input-u79uwXL29TY76Z2rM5mHXA,
linux-media-u79uwXL29TY76Z2rM5mHXA,
linaro-mm-sig-cunTk1MwBs8s++Sfvej+rw,
dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW,
ceph-devel-u79uwXL29TY76Z2rM5mHXA, Greg Kroah-Hartman,
linux-usb-u79uwXL29TY76Z2rM5mHXA,
linux-wireless-u79uwXL29TY76Z2rM5mHXA,
linux-kernel-u79uwXL29TY76Z2rM5mHXA,
linux-crypto-u79uwXL29TY76Z2rM5mHXA,
netdev-u79uwXL29TY76Z2rM5mHXA,
linux-fsdevel-u79uwXL29TY76Z2rM5mHXA,
linuxppc-dev-uLR06cmDAlY/bJ5BZ2RsiQ, David S. Miller,
linux-btrfs-u79uwXL29TY76Z2rM5mHXA,
viro-RmSDqhL/yNMiFSDQTTA3OLVCufUGDwFn
On Wed 12 Sep 08:08 PDT 2018, Arnd Bergmann wrote:
[..]
> diff --git a/drivers/rpmsg/rpmsg_char.c b/drivers/rpmsg/rpmsg_char.c
> index a76b963a7e50..02aefb2b2d47 100644
> --- a/drivers/rpmsg/rpmsg_char.c
> +++ b/drivers/rpmsg/rpmsg_char.c
> @@ -285,7 +285,7 @@ static const struct file_operations rpmsg_eptdev_fops = {
> .write = rpmsg_eptdev_write,
> .poll = rpmsg_eptdev_poll,
> .unlocked_ioctl = rpmsg_eptdev_ioctl,
> - .compat_ioctl = rpmsg_eptdev_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static ssize_t name_show(struct device *dev, struct device_attribute *attr,
> @@ -446,7 +446,7 @@ static const struct file_operations rpmsg_ctrldev_fops = {
> .open = rpmsg_ctrldev_open,
> .release = rpmsg_ctrldev_release,
> .unlocked_ioctl = rpmsg_ctrldev_ioctl,
> - .compat_ioctl = rpmsg_ctrldev_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
For rpmsg part
Acked-by: Bjorn Andersson <bjorn.andersson-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
Regards,
Bjorn
^ permalink raw reply [flat|nested] 141+ messages in thread
* Re: [PATCH v2 05/17] compat_ioctl: move more drivers to generic_compat_ioctl_ptrarg
@ 2018-10-06 7:05 ` Bjorn Andersson
0 siblings, 0 replies; 141+ messages in thread
From: Bjorn Andersson @ 2018-10-06 7:05 UTC (permalink / raw)
To: Arnd Bergmann
Cc: viro, linux-fsdevel, Greg Kroah-Hartman, David S. Miller, devel,
linux-kernel, qat-linux, linux-crypto, linux-media, dri-devel,
linaro-mm-sig, amd-gfx, linux-input, linux-iio, linux-rdma,
linux-nvdimm, linux-nvme, linux-pci, platform-driver-x86,
linux-remoteproc, sparclinux, linux-scsi, linux-usb, linux-fbdev,
linuxppc-dev, linux-btrfs, ceph-devel, linux-wireless, netdev
On Wed 12 Sep 08:08 PDT 2018, Arnd Bergmann wrote:
[..]
> diff --git a/drivers/rpmsg/rpmsg_char.c b/drivers/rpmsg/rpmsg_char.c
> index a76b963a7e50..02aefb2b2d47 100644
> --- a/drivers/rpmsg/rpmsg_char.c
> +++ b/drivers/rpmsg/rpmsg_char.c
> @@ -285,7 +285,7 @@ static const struct file_operations rpmsg_eptdev_fops = {
> .write = rpmsg_eptdev_write,
> .poll = rpmsg_eptdev_poll,
> .unlocked_ioctl = rpmsg_eptdev_ioctl,
> - .compat_ioctl = rpmsg_eptdev_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
> static ssize_t name_show(struct device *dev, struct device_attribute *attr,
> @@ -446,7 +446,7 @@ static const struct file_operations rpmsg_ctrldev_fops = {
> .open = rpmsg_ctrldev_open,
> .release = rpmsg_ctrldev_release,
> .unlocked_ioctl = rpmsg_ctrldev_ioctl,
> - .compat_ioctl = rpmsg_ctrldev_ioctl,
> + .compat_ioctl = generic_compat_ioctl_ptrarg,
> };
>
For rpmsg part
Acked-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Regards,
Bjorn
^ permalink raw reply [flat|nested] 141+ messages in thread