From: Xie Yongji <xieyongji@bytedance.com> To: mst@redhat.com, jasowang@redhat.com, stefanha@redhat.com, sgarzare@redhat.com, parav@nvidia.com, hch@infradead.org, christian.brauner@canonical.com, rdunlap@infradead.org, willy@infradead.org, viro@zeniv.linux.org.uk, axboe@kernel.dk, bcrl@kvack.org, corbet@lwn.net, mika.penttila@nextfour.com, dan.carpenter@oracle.com, joro@8bytes.org, gregkh@linuxfoundation.org, zhe.he@windriver.com, xiaodong.liu@intel.com Cc: songmuchun@bytedance.com, virtualization@lists.linux-foundation.org, netdev@vger.kernel.org, kvm@vger.kernel.org, linux-fsdevel@vger.kernel.org, iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org Subject: [PATCH v9 02/17] file: Export receive_fd() to modules Date: Tue, 13 Jul 2021 16:46:41 +0800 [thread overview] Message-ID: <20210713084656.232-3-xieyongji@bytedance.com> (raw) In-Reply-To: <20210713084656.232-1-xieyongji@bytedance.com> Export receive_fd() so that some modules can use it to pass file descriptor between processes without missing any security stuffs. Signed-off-by: Xie Yongji <xieyongji@bytedance.com> --- fs/file.c | 6 ++++++ include/linux/file.h | 7 +++---- 2 files changed, 9 insertions(+), 4 deletions(-) diff --git a/fs/file.c b/fs/file.c index 86dc9956af32..210e540672aa 100644 --- a/fs/file.c +++ b/fs/file.c @@ -1134,6 +1134,12 @@ int receive_fd_replace(int new_fd, struct file *file, unsigned int o_flags) return new_fd; } +int receive_fd(struct file *file, unsigned int o_flags) +{ + return __receive_fd(file, NULL, o_flags); +} +EXPORT_SYMBOL_GPL(receive_fd); + static int ksys_dup3(unsigned int oldfd, unsigned int newfd, int flags) { int err = -EBADF; diff --git a/include/linux/file.h b/include/linux/file.h index 2de2e4613d7b..51e830b4fe3a 100644 --- a/include/linux/file.h +++ b/include/linux/file.h @@ -94,6 +94,9 @@ extern void fd_install(unsigned int fd, struct file *file); extern int __receive_fd(struct file *file, int __user *ufd, unsigned int o_flags); + +extern int receive_fd(struct file *file, unsigned int o_flags); + static inline int receive_fd_user(struct file *file, int __user *ufd, unsigned int o_flags) { @@ -101,10 +104,6 @@ static inline int receive_fd_user(struct file *file, int __user *ufd, return -EFAULT; return __receive_fd(file, ufd, o_flags); } -static inline int receive_fd(struct file *file, unsigned int o_flags) -{ - return __receive_fd(file, NULL, o_flags); -} int receive_fd_replace(int new_fd, struct file *file, unsigned int o_flags); extern void flush_delayed_fput(void); -- 2.11.0
WARNING: multiple messages have this Message-ID (diff)
From: Xie Yongji <xieyongji@bytedance.com> To: mst@redhat.com, jasowang@redhat.com, stefanha@redhat.com, sgarzare@redhat.com, parav@nvidia.com, hch@infradead.org, christian.brauner@canonical.com, rdunlap@infradead.org, willy@infradead.org, viro@zeniv.linux.org.uk, axboe@kernel.dk, bcrl@kvack.org, corbet@lwn.net, mika.penttila@nextfour.com, dan.carpenter@oracle.com, joro@8bytes.org, gregkh@linuxfoundation.org, zhe.he@windriver.com, xiaodong.liu@intel.com Cc: kvm@vger.kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, virtualization@lists.linux-foundation.org, iommu@lists.linux-foundation.org, songmuchun@bytedance.com, linux-fsdevel@vger.kernel.org Subject: [PATCH v9 02/17] file: Export receive_fd() to modules Date: Tue, 13 Jul 2021 16:46:41 +0800 [thread overview] Message-ID: <20210713084656.232-3-xieyongji@bytedance.com> (raw) In-Reply-To: <20210713084656.232-1-xieyongji@bytedance.com> Export receive_fd() so that some modules can use it to pass file descriptor between processes without missing any security stuffs. Signed-off-by: Xie Yongji <xieyongji@bytedance.com> --- fs/file.c | 6 ++++++ include/linux/file.h | 7 +++---- 2 files changed, 9 insertions(+), 4 deletions(-) diff --git a/fs/file.c b/fs/file.c index 86dc9956af32..210e540672aa 100644 --- a/fs/file.c +++ b/fs/file.c @@ -1134,6 +1134,12 @@ int receive_fd_replace(int new_fd, struct file *file, unsigned int o_flags) return new_fd; } +int receive_fd(struct file *file, unsigned int o_flags) +{ + return __receive_fd(file, NULL, o_flags); +} +EXPORT_SYMBOL_GPL(receive_fd); + static int ksys_dup3(unsigned int oldfd, unsigned int newfd, int flags) { int err = -EBADF; diff --git a/include/linux/file.h b/include/linux/file.h index 2de2e4613d7b..51e830b4fe3a 100644 --- a/include/linux/file.h +++ b/include/linux/file.h @@ -94,6 +94,9 @@ extern void fd_install(unsigned int fd, struct file *file); extern int __receive_fd(struct file *file, int __user *ufd, unsigned int o_flags); + +extern int receive_fd(struct file *file, unsigned int o_flags); + static inline int receive_fd_user(struct file *file, int __user *ufd, unsigned int o_flags) { @@ -101,10 +104,6 @@ static inline int receive_fd_user(struct file *file, int __user *ufd, return -EFAULT; return __receive_fd(file, ufd, o_flags); } -static inline int receive_fd(struct file *file, unsigned int o_flags) -{ - return __receive_fd(file, NULL, o_flags); -} int receive_fd_replace(int new_fd, struct file *file, unsigned int o_flags); extern void flush_delayed_fput(void); -- 2.11.0 _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu
next prev parent reply other threads:[~2021-07-13 8:47 UTC|newest] Thread overview: 108+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-07-13 8:46 [PATCH v9 00/17] Introduce VDUSE - vDPA Device in Userspace Xie Yongji 2021-07-13 8:46 ` Xie Yongji 2021-07-13 8:46 ` [PATCH v9 01/17] iova: Export alloc_iova_fast() and free_iova_fast() Xie Yongji 2021-07-13 8:46 ` Xie Yongji 2021-07-13 8:46 ` Xie Yongji [this message] 2021-07-13 8:46 ` [PATCH v9 02/17] file: Export receive_fd() to modules Xie Yongji 2021-07-13 8:46 ` [PATCH v9 03/17] vdpa: Fix code indentation Xie Yongji 2021-07-13 8:46 ` Xie Yongji 2021-07-14 4:20 ` Joe Perches 2021-07-14 4:20 ` Joe Perches 2021-07-14 4:20 ` Joe Perches 2021-07-14 5:48 ` Yongji Xie 2021-07-14 5:48 ` Yongji Xie 2021-07-13 8:46 ` [PATCH v9 04/17] vdpa: Fail the vdpa_reset() if fail to set device status to zero Xie Yongji 2021-07-13 8:46 ` Xie Yongji 2021-07-13 8:46 ` [PATCH v9 05/17] vhost-vdpa: Fail the vhost_vdpa_set_status() on reset failure Xie Yongji 2021-07-13 8:46 ` Xie Yongji 2021-07-13 8:46 ` [PATCH v9 06/17] vhost-vdpa: Handle the failure of vdpa_reset() Xie Yongji 2021-07-13 8:46 ` Xie Yongji 2021-07-13 8:46 ` [PATCH v9 07/17] virtio: Don't set FAILED status bit on device index allocation failure Xie Yongji 2021-07-13 8:46 ` Xie Yongji 2021-07-13 11:02 ` Dan Carpenter 2021-07-13 11:02 ` Dan Carpenter 2021-07-13 11:02 ` Dan Carpenter 2021-07-13 11:25 ` Yongji Xie 2021-07-13 11:25 ` Yongji Xie 2021-07-13 8:46 ` [PATCH v9 08/17] virtio_config: Add a return value to reset function Xie Yongji 2021-07-13 8:46 ` Xie Yongji 2021-07-14 10:21 ` kernel test robot 2021-07-15 20:37 ` kernel test robot 2021-07-13 8:46 ` [PATCH v9 09/17] virtio-vdpa: Handle the failure of vdpa_reset() Xie Yongji 2021-07-13 8:46 ` Xie Yongji 2021-07-13 8:46 ` [PATCH v9 10/17] virtio: Handle device reset failure in register_virtio_device() Xie Yongji 2021-07-13 8:46 ` Xie Yongji 2021-07-13 8:46 ` [PATCH v9 11/17] vhost-iotlb: Add an opaque pointer for vhost IOTLB Xie Yongji 2021-07-13 8:46 ` Xie Yongji 2021-07-13 8:46 ` [PATCH v9 12/17] vdpa: Add an opaque pointer for vdpa_config_ops.dma_map() Xie Yongji 2021-07-13 8:46 ` Xie Yongji 2021-07-13 8:46 ` [PATCH v9 13/17] vdpa: factor out vhost_vdpa_pa_map() and vhost_vdpa_pa_unmap() Xie Yongji 2021-07-13 8:46 ` Xie Yongji 2021-07-13 11:31 ` Dan Carpenter 2021-07-13 11:31 ` Dan Carpenter 2021-07-13 11:31 ` Dan Carpenter 2021-07-14 2:14 ` Jason Wang 2021-07-14 2:14 ` Jason Wang 2021-07-14 2:14 ` Jason Wang 2021-07-14 8:05 ` Dan Carpenter 2021-07-14 8:05 ` Dan Carpenter 2021-07-14 8:05 ` Dan Carpenter 2021-07-14 9:41 ` Jason Wang 2021-07-14 9:41 ` Jason Wang 2021-07-14 9:41 ` Jason Wang 2021-07-14 9:57 ` Dan Carpenter 2021-07-14 9:57 ` Dan Carpenter 2021-07-14 9:57 ` Dan Carpenter 2021-07-15 2:20 ` Jason Wang 2021-07-15 2:20 ` Jason Wang 2021-07-15 2:20 ` Jason Wang 2021-07-14 5:24 ` Yongji Xie 2021-07-14 5:24 ` Yongji Xie 2021-07-13 8:46 ` [PATCH v9 14/17] vdpa: Support transferring virtual addressing during DMA mapping Xie Yongji 2021-07-13 8:46 ` Xie Yongji 2021-07-13 8:46 ` [PATCH v9 15/17] vduse: Implement an MMU-based IOMMU driver Xie Yongji 2021-07-13 8:46 ` Xie Yongji 2021-07-13 8:46 ` [PATCH v9 16/17] vduse: Introduce VDUSE - vDPA Device in Userspace Xie Yongji 2021-07-13 8:46 ` Xie Yongji 2021-07-13 13:27 ` Dan Carpenter 2021-07-13 13:27 ` Dan Carpenter 2021-07-13 13:27 ` Dan Carpenter 2021-07-14 2:54 ` Jason Wang 2021-07-14 2:54 ` Jason Wang 2021-07-14 2:54 ` Jason Wang 2021-07-14 5:45 ` Yongji Xie 2021-07-14 5:45 ` Yongji Xie 2021-07-14 5:45 ` Jason Wang 2021-07-14 5:45 ` Jason Wang 2021-07-14 5:45 ` Jason Wang 2021-07-14 5:54 ` Michael S. Tsirkin 2021-07-14 5:54 ` Michael S. Tsirkin 2021-07-14 5:54 ` Michael S. Tsirkin 2021-07-14 6:02 ` Jason Wang 2021-07-14 6:02 ` Jason Wang 2021-07-14 6:02 ` Jason Wang 2021-07-14 6:47 ` Greg KH 2021-07-14 6:47 ` Greg KH 2021-07-14 6:47 ` Greg KH 2021-07-14 8:56 ` Jason Wang 2021-07-14 8:56 ` Jason Wang 2021-07-14 8:56 ` Jason Wang 2021-07-14 6:49 ` Yongji Xie 2021-07-14 6:49 ` Yongji Xie 2021-07-14 9:12 ` Jason Wang 2021-07-14 9:12 ` Jason Wang 2021-07-14 9:12 ` Jason Wang 2021-07-15 4:03 ` Yongji Xie 2021-07-15 4:03 ` Yongji Xie 2021-07-15 5:00 ` Jason Wang 2021-07-15 5:00 ` Jason Wang 2021-07-15 5:00 ` Jason Wang 2021-07-13 8:46 ` [PATCH v9 17/17] Documentation: Add documentation for VDUSE Xie Yongji 2021-07-13 8:46 ` Xie Yongji 2021-07-15 5:18 ` Jason Wang 2021-07-15 5:18 ` Jason Wang 2021-07-15 5:18 ` Jason Wang 2021-07-15 7:27 ` Yongji Xie 2021-07-15 7:27 ` Yongji Xie 2021-12-15 10:10 ` [PATCH v9 00/17] Introduce VDUSE - vDPA Device in Userspace Liuxiangdong 2021-12-16 3:14 ` Yongji Xie
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