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| author | Miklos Szeredi <mszeredi@redhat.com> | 2016-09-27 11:45:12 +0300 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2016-10-06 01:23:59 +0300 |
| commit | fba597db4218ac324eee34b64736ea94829c95bf (patch) | |
| tree | 1f1a653fe362d94719d40c175e11e2aaa91d9c03 /include/linux/pipe_fs_i.h | |
| parent | a779638cf622f069a484e8802134cca3c6c71415 (diff) | |
| download | linux-fba597db4218ac324eee34b64736ea94829c95bf.tar.xz | |
pipe: add pipe_buf_confirm() helper
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'include/linux/pipe_fs_i.h')
| -rw-r--r-- | include/linux/pipe_fs_i.h | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/include/linux/pipe_fs_i.h b/include/linux/pipe_fs_i.h index d24fa6da6ae3..654413334537 100644 --- a/include/linux/pipe_fs_i.h +++ b/include/linux/pipe_fs_i.h @@ -140,6 +140,17 @@ static inline void pipe_buf_release(struct pipe_inode_info *pipe, ops->release(pipe, buf); } +/** + * pipe_buf_confirm - verify contents of the pipe buffer + * @pipe: the pipe that the buffer belongs to + * @buf: the buffer to confirm + */ +static inline int pipe_buf_confirm(struct pipe_inode_info *pipe, + struct pipe_buffer *buf) +{ + return buf->ops->confirm(pipe, buf); +} + /* Differs from PIPE_BUF in that PIPE_SIZE is the length of the actual memory allocation, whereas PIPE_BUF makes atomicity guarantees. */ #define PIPE_SIZE PAGE_SIZE @@ -154,7 +165,6 @@ extern unsigned long pipe_user_pages_hard; extern unsigned long pipe_user_pages_soft; int pipe_proc_fn(struct ctl_table *, int, void __user *, size_t *, loff_t *); - /* Drop the inode semaphore and wait for a pipe event, atomically */ void pipe_wait(struct pipe_inode_info *pipe); |