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authorXie Yongji <xieyongji@bytedance.com>2021-08-31 12:36:24 +0200
committerMichael S. Tsirkin <mst@redhat.com>2021-09-06 13:20:56 +0200
commit9c930054f2f5326d59ee4bf8d7d1cf6c82f5643b (patch)
tree6306ff784fd8448edf9379b516d89ca96bdad559 /include
parenteventfd: Export eventfd_wake_count to modules (diff)
downloadlinux-9c930054f2f5326d59ee4bf8d7d1cf6c82f5643b.tar.xz
linux-9c930054f2f5326d59ee4bf8d7d1cf6c82f5643b.zip
file: Export receive_fd() to modules
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> Acked-by: Jason Wang <jasowang@redhat.com> Link: https://lore.kernel.org/r/20210831103634.33-4-xieyongji@bytedance.com Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'include')
-rw-r--r--include/linux/file.h7
1 files changed, 3 insertions, 4 deletions
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);