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vfs: create a generic checking function for FS_IOC_FSSETXATTR

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Create a generic checking function for the incoming FS_IOC_FSSETXATTR
fsxattr values so that we can standardize some of the implementation
behaviors.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Jan Kara <jack@suse.cz>
This commit is contained in:
Darrick J. Wong 2019-07-01 08:25:35 -07:00
parent 5aca284210
commit 7b0e492e6b
5 changed files with 98 additions and 51 deletions
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9
include/linux/fs.h
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@ -3549,4 +3549,13 @@ static inline struct sock *io_uring_get_socket(struct file *file)
int vfs_ioc_setflags_prepare(struct inode *inode, unsigned int oldflags,
unsigned int flags);
int vfs_ioc_fssetxattr_check(struct inode *inode, const struct fsxattr *old_fa,
struct fsxattr *fa);
static inline void simple_fill_fsxattr(struct fsxattr *fa, __u32 xflags)
{
memset(fa, 0, sizeof(*fa));
fa->fsx_xflags = xflags;
}
#endif /* _LINUX_FS_H */