* [PATCH v3 0/3] treewide: Use sizeof_member() macro
@ 2019-10-29 22:47 Kees Cook
2019-10-29 22:47 ` [PATCH v3 1/3] MIPS: OCTEON: Replace SIZEOF_FIELD() macro Kees Cook
2019-10-29 22:47 ` [PATCH v3 2/3] linux/stddef.h: Add sizeof_member() macro Kees Cook
0 siblings, 2 replies; 3+ messages in thread
From: Kees Cook @ 2019-10-29 22:47 UTC (permalink / raw)
To: Linus Torvalds
Cc: Kees Cook, Pankaj Bharadiya, Alexey Dobriyan, David S. Miller,
Randy Dunlap, Andrew Morton, netdev, linux-arch, linux-fsdevel,
linux-kernel
v3: resend, adjusted for minimizing linux-next interference
v2: https://lore.kernel.org/lkml/20191010232345.26594-1-keescook@chromium.org
v1: https://lore.kernel.org/lkml/201909261026.6E3381876C@keescook
This is basically a resend of the heads-up for this tree I'm carrying
for the v5.5 merge window to replace the various struct member sizeof
macros with sizeof_member(). The CC list was insane, so I trimmed it to
the major areas that get touched.
Linus, if Alexey's argument on naming[1] does not convince you, please
advise on what you want the final macro to be named and I will adjust. :)
Dave, I converted your "no objection"[2] into an Acked-by; please yell
if this is not desired.
Thanks!
-Kees
[1] https://www.openwall.com/lists/kernel-hardening/2019/07/02/2
[2] https://lore.kernel.org/lkml/20191002.132121.402975401040540710.davem@davemloft.net
Pankaj Bharadiya (3):
MIPS: OCTEON: Replace SIZEOF_FIELD() macro
linux/stddef.h: Add sizeof_member() macro
treewide: Use sizeof_member() macro
Documentation/process/coding-style.rst | 2 +-
.../it_IT/process/coding-style.rst | 2 +-
.../zh_CN/process/coding-style.rst | 2 +-
arch/arc/kernel/unwind.c | 6 +-
arch/arm64/include/asm/processor.h | 10 +-
.../cavium-octeon/executive/cvmx-bootmem.c | 9 +-
arch/powerpc/net/bpf_jit32.h | 4 +-
arch/powerpc/net/bpf_jit_comp.c | 16 +-
arch/sparc/net/bpf_jit_comp_32.c | 8 +-
arch/x86/kernel/fpu/xstate.c | 2 +-
block/blk-core.c | 4 +-
crypto/adiantum.c | 4 +-
crypto/essiv.c | 2 +-
drivers/firmware/efi/efi.c | 2 +-
drivers/gpu/drm/i915/gvt/scheduler.c | 2 +-
drivers/infiniband/hw/efa/efa_verbs.c | 2 +-
drivers/infiniband/hw/hfi1/sdma.c | 2 +-
drivers/infiniband/hw/hfi1/verbs.h | 4 +-
.../ulp/opa_vnic/opa_vnic_ethtool.c | 2 +-
drivers/input/keyboard/applespi.c | 2 +-
drivers/md/raid5-ppl.c | 2 +-
drivers/media/platform/omap3isp/isppreview.c | 24 +--
drivers/net/ethernet/amd/xgbe/xgbe-ethtool.c | 4 +-
.../ethernet/cavium/liquidio/octeon_console.c | 16 +-
.../net/ethernet/emulex/benet/be_ethtool.c | 2 +-
.../hisilicon/hns3/hns3pf/hclge_main.c | 2 +-
.../ethernet/hisilicon/hns3/hns3pf/hclge_tm.c | 2 +-
.../net/ethernet/huawei/hinic/hinic_ethtool.c | 8 +-
.../net/ethernet/intel/fm10k/fm10k_ethtool.c | 2 +-
.../net/ethernet/intel/i40e/i40e_ethtool.c | 2 +-
.../net/ethernet/intel/i40e/i40e_lan_hmc.c | 2 +-
.../net/ethernet/intel/iavf/iavf_ethtool.c | 2 +-
drivers/net/ethernet/intel/ice/ice_ethtool.c | 10 +-
.../net/ethernet/intel/ice/ice_lan_tx_rx.h | 2 +-
drivers/net/ethernet/intel/igb/igb_ethtool.c | 4 +-
drivers/net/ethernet/intel/igc/igc_ethtool.c | 4 +-
.../net/ethernet/intel/ixgb/ixgb_ethtool.c | 4 +-
drivers/net/ethernet/intel/ixgbevf/ethtool.c | 4 +-
drivers/net/ethernet/marvell/mv643xx_eth.c | 4 +-
.../net/ethernet/mellanox/mlx4/en_ethtool.c | 2 +-
.../ethernet/mellanox/mlx5/core/fpga/ipsec.c | 6 +-
.../net/ethernet/mellanox/mlx5/core/fs_core.c | 4 +-
.../ethernet/mellanox/mlxsw/spectrum_fid.c | 4 +-
.../ethernet/mellanox/mlxsw/spectrum_ptp.c | 2 +-
drivers/net/ethernet/netronome/nfp/bpf/jit.c | 10 +-
drivers/net/ethernet/netronome/nfp/bpf/main.c | 2 +-
.../net/ethernet/netronome/nfp/bpf/offload.c | 2 +-
.../net/ethernet/netronome/nfp/flower/main.h | 2 +-
.../oki-semi/pch_gbe/pch_gbe_ethtool.c | 2 +-
drivers/net/ethernet/qlogic/qede/qede.h | 2 +-
.../ethernet/qlogic/qlcnic/qlcnic_ethtool.c | 2 +-
.../ethernet/samsung/sxgbe/sxgbe_ethtool.c | 2 +-
.../ethernet/stmicro/stmmac/stmmac_ethtool.c | 4 +-
drivers/net/ethernet/ti/cpsw_ethtool.c | 6 +-
drivers/net/ethernet/ti/netcp_ethss.c | 32 ++--
drivers/net/fjes/fjes_ethtool.c | 2 +-
drivers/net/geneve.c | 2 +-
drivers/net/hyperv/netvsc_drv.c | 2 +-
drivers/net/usb/sierra_net.c | 2 +-
drivers/net/usb/usbnet.c | 2 +-
drivers/net/vxlan.c | 4 +-
.../net/wireless/marvell/libertas/debugfs.c | 2 +-
drivers/net/wireless/marvell/mwifiex/util.h | 4 +-
drivers/s390/net/qeth_core_main.c | 2 +-
drivers/s390/net/qeth_core_mpc.h | 10 +-
drivers/scsi/aacraid/aachba.c | 4 +-
drivers/scsi/be2iscsi/be_cmds.h | 2 +-
drivers/scsi/cxgbi/libcxgbi.c | 2 +-
drivers/scsi/smartpqi/smartpqi_init.c | 6 +-
drivers/staging/qlge/qlge_ethtool.c | 2 +-
drivers/target/iscsi/cxgbit/cxgbit_main.c | 2 +-
drivers/usb/atm/usbatm.c | 2 +-
drivers/usb/gadget/function/f_fs.c | 2 +-
fs/befs/linuxvfs.c | 2 +-
fs/crypto/keyring.c | 2 +-
fs/ext2/super.c | 2 +-
fs/ext4/super.c | 2 +-
fs/freevxfs/vxfs_super.c | 2 +-
fs/fuse/virtio_fs.c | 2 +-
fs/orangefs/super.c | 2 +-
fs/ufs/super.c | 2 +-
fs/verity/enable.c | 2 +-
include/linux/filter.h | 12 +-
include/linux/kvm_host.h | 2 +-
include/linux/phy_led_triggers.h | 2 +-
include/linux/slab.h | 2 +-
include/linux/stddef.h | 13 +-
include/net/garp.h | 2 +-
include/net/ip_tunnels.h | 6 +-
include/net/mrp.h | 2 +-
include/net/netfilter/nf_conntrack_helper.h | 2 +-
include/net/netfilter/nf_tables_core.h | 2 +-
include/net/sock.h | 2 +-
ipc/util.c | 2 +-
kernel/bpf/cgroup.c | 2 +-
kernel/bpf/local_storage.c | 4 +-
kernel/fork.c | 2 +-
kernel/signal.c | 12 +-
kernel/utsname.c | 2 +-
net/802/mrp.c | 6 +-
net/batman-adv/main.c | 2 +-
net/bridge/br.c | 2 +-
net/caif/caif_socket.c | 2 +-
net/core/dev.c | 2 +-
net/core/filter.c | 140 +++++++++---------
net/core/flow_dissector.c | 10 +-
net/core/skbuff.c | 2 +-
net/core/xdp.c | 4 +-
net/dccp/proto.c | 2 +-
net/ipv4/ip_gre.c | 4 +-
net/ipv4/ip_vti.c | 4 +-
net/ipv4/raw.c | 2 +-
net/ipv4/tcp.c | 2 +-
net/ipv6/ip6_gre.c | 4 +-
net/ipv6/raw.c | 2 +-
net/iucv/af_iucv.c | 2 +-
net/netfilter/nf_tables_api.c | 4 +-
net/netfilter/nfnetlink_cthelper.c | 2 +-
net/netfilter/nft_ct.c | 12 +-
net/netfilter/nft_masq.c | 2 +-
net/netfilter/nft_nat.c | 6 +-
net/netfilter/nft_redir.c | 2 +-
net/netfilter/nft_tproxy.c | 4 +-
net/netfilter/xt_RATEEST.c | 2 +-
net/netlink/af_netlink.c | 2 +-
net/openvswitch/datapath.c | 2 +-
net/openvswitch/flow.h | 4 +-
net/rxrpc/af_rxrpc.c | 2 +-
net/sched/act_ct.c | 4 +-
net/sched/cls_flower.c | 2 +-
net/sctp/socket.c | 4 +-
net/unix/af_unix.c | 2 +-
security/integrity/ima/ima_policy.c | 4 +-
sound/soc/codecs/hdmi-codec.c | 2 +-
tools/testing/selftests/bpf/bpf_util.h | 6 +-
virt/kvm/kvm_main.c | 2 +-
136 files changed, 340 insertions(+), 336 deletions(-)
--
2.17.1
^ permalink raw reply [flat|nested] 3+ messages in thread
* [PATCH v3 1/3] MIPS: OCTEON: Replace SIZEOF_FIELD() macro
2019-10-29 22:47 [PATCH v3 0/3] treewide: Use sizeof_member() macro Kees Cook
@ 2019-10-29 22:47 ` Kees Cook
2019-10-29 22:47 ` [PATCH v3 2/3] linux/stddef.h: Add sizeof_member() macro Kees Cook
1 sibling, 0 replies; 3+ messages in thread
From: Kees Cook @ 2019-10-29 22:47 UTC (permalink / raw)
To: Linus Torvalds
Cc: Kees Cook, Pankaj Bharadiya, Alexey Dobriyan, David S. Miller,
Randy Dunlap, Andrew Morton, netdev, linux-arch, linux-fsdevel,
linux-kernel
From: Pankaj Bharadiya <pankaj.laxminarayan.bharadiya@intel.com>
In preparation for switching to a standard sizeof_member() macro to find the
size of a member of a struct, remove the custom SIZEOF_FIELD() macro and use
the more common FIELD_SIZEOF() instead. Later patches will globally replace
FIELD_SIZEOF() and sizeof_field() with the more accurate sizeof_member().
Signed-off-by: Pankaj Bharadiya <pankaj.laxminarayan.bharadiya@intel.com>
Link: https://lore.kernel.org/r/20190924105839.110713-4-pankaj.laxminarayan.bharadiya@intel.com
Co-developed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Kees Cook <keescook@chromium.org>
---
arch/mips/cavium-octeon/executive/cvmx-bootmem.c | 9 +--------
1 file changed, 1 insertion(+), 8 deletions(-)
diff --git a/arch/mips/cavium-octeon/executive/cvmx-bootmem.c b/arch/mips/cavium-octeon/executive/cvmx-bootmem.c
index ba8f82a29a81..44b506a14666 100644
--- a/arch/mips/cavium-octeon/executive/cvmx-bootmem.c
+++ b/arch/mips/cavium-octeon/executive/cvmx-bootmem.c
@@ -44,13 +44,6 @@ static struct cvmx_bootmem_desc *cvmx_bootmem_desc;
/* See header file for descriptions of functions */
-/**
- * This macro returns the size of a member of a structure.
- * Logically it is the same as "sizeof(s::field)" in C++, but
- * C lacks the "::" operator.
- */
-#define SIZEOF_FIELD(s, field) sizeof(((s *)NULL)->field)
-
/**
* This macro returns a member of the
* cvmx_bootmem_named_block_desc_t structure. These members can't
@@ -65,7 +58,7 @@ static struct cvmx_bootmem_desc *cvmx_bootmem_desc;
#define CVMX_BOOTMEM_NAMED_GET_FIELD(addr, field) \
__cvmx_bootmem_desc_get(addr, \
offsetof(struct cvmx_bootmem_named_block_desc, field), \
- SIZEOF_FIELD(struct cvmx_bootmem_named_block_desc, field))
+ FIELD_SIZEOF(struct cvmx_bootmem_named_block_desc, field))
/**
* This function is the implementation of the get macros defined
--
2.17.1
^ permalink raw reply related [flat|nested] 3+ messages in thread
* [PATCH v3 2/3] linux/stddef.h: Add sizeof_member() macro
2019-10-29 22:47 [PATCH v3 0/3] treewide: Use sizeof_member() macro Kees Cook
2019-10-29 22:47 ` [PATCH v3 1/3] MIPS: OCTEON: Replace SIZEOF_FIELD() macro Kees Cook
@ 2019-10-29 22:47 ` Kees Cook
1 sibling, 0 replies; 3+ messages in thread
From: Kees Cook @ 2019-10-29 22:47 UTC (permalink / raw)
To: Linus Torvalds
Cc: Kees Cook, Pankaj Bharadiya, Alexey Dobriyan, David S. Miller,
Randy Dunlap, Andrew Morton, netdev, linux-arch, linux-fsdevel,
linux-kernel
From: Pankaj Bharadiya <pankaj.laxminarayan.bharadiya@intel.com>
At present we have 2 different macros to calculate the size of a member
of a struct: FIELD_SIZEOF() and sizeof_field(). As a prerequisite to
bringing uniformity to the entire kernel source tree, add sizeof_member()
macro as it is both more pleasant (not upper case) and more correct
(sizeof()-family cannot operate on bit fields; this is meant to operate
on struct members), as discussed[1].
Future patches will replace all occurrences of above macros with
sizeof_member().
[1] https://www.openwall.com/lists/kernel-hardening/2019/07/02/2
Signed-off-by: Pankaj Bharadiya <pankaj.laxminarayan.bharadiya@intel.com>
Link: https://lore.kernel.org/r/20190924105839.110713-2-pankaj.laxminarayan.bharadiya@intel.com
Co-developed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Kees Cook <keescook@chromium.org>
---
include/linux/stddef.h | 13 ++++++++++++-
tools/testing/selftests/bpf/bpf_util.h | 6 +++---
2 files changed, 15 insertions(+), 4 deletions(-)
diff --git a/include/linux/stddef.h b/include/linux/stddef.h
index 998a4ba28eba..ecadb736c853 100644
--- a/include/linux/stddef.h
+++ b/include/linux/stddef.h
@@ -27,6 +27,17 @@ enum {
*/
#define sizeof_field(TYPE, MEMBER) sizeof((((TYPE *)0)->MEMBER))
+/**
+ * sizeof_member(TYPE, MEMBER) - get the size of a struct's member
+ *
+ * @TYPE: the target struct
+ * @MEMBER: the target struct's member
+ *
+ * Return: the size of @MEMBER in the struct definition without having a
+ * declared instance of @TYPE.
+ */
+#define sizeof_member(TYPE, MEMBER) (sizeof(((TYPE *)0)->MEMBER))
+
/**
* offsetofend(TYPE, MEMBER)
*
@@ -34,6 +45,6 @@ enum {
* @MEMBER: The member within the structure to get the end offset of
*/
#define offsetofend(TYPE, MEMBER) \
- (offsetof(TYPE, MEMBER) + sizeof_field(TYPE, MEMBER))
+ (offsetof(TYPE, MEMBER) + sizeof_member(TYPE, MEMBER))
#endif
diff --git a/tools/testing/selftests/bpf/bpf_util.h b/tools/testing/selftests/bpf/bpf_util.h
index ec219f84e041..6b4b3e24ba9f 100644
--- a/tools/testing/selftests/bpf/bpf_util.h
+++ b/tools/testing/selftests/bpf/bpf_util.h
@@ -31,13 +31,13 @@ static inline unsigned int bpf_num_possible_cpus(void)
# define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
#endif
-#ifndef sizeof_field
-#define sizeof_field(TYPE, MEMBER) sizeof((((TYPE *)0)->MEMBER))
+#ifndef sizeof_member
+#define sizeof_member(TYPE, MEMBER) sizeof((((TYPE *)0)->MEMBER))
#endif
#ifndef offsetofend
#define offsetofend(TYPE, MEMBER) \
- (offsetof(TYPE, MEMBER) + sizeof_field(TYPE, MEMBER))
+ (offsetof(TYPE, MEMBER) + sizeof_member(TYPE, MEMBER))
#endif
#endif /* __BPF_UTIL__ */
--
2.17.1
^ permalink raw reply related [flat|nested] 3+ messages in thread
end of thread, other threads:[~2019-10-29 22:48 UTC | newest]
Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed)
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