[20/24] fs: implement vfs_stat and vfs_lstat in terms of vfs_fstatat

Commit Message

Christoph Hellwig July 20, 2020, 3:58 p.m. UTC

Go through vfs_fstatat instead of duplicating the *stat to statx mapping
three times.

Signed-off-by: Christoph Hellwig <[e-mail]>
---
 include/linux/fs.h | 16 +++++++---------
 1 file changed, 7 insertions(+), 9 deletions(-)

Patch

diff --git a/include/linux/fs.h b/include/linux/fs.h
index 0169d3efa844d0..4d9d33c62fa2e5 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -3299,21 +3299,19 @@  extern int iterate_dir(struct file *, struct dir_context *);
 extern int vfs_statx(int, const char __user *, int, struct kstat *, u32);
 int vfs_fstat(int fd, struct kstat *stat);
 
-static inline int vfs_stat(const char __user *filename, struct kstat *stat)
+static inline int vfs_fstatat(int dfd, const char __user *filename,
+			      struct kstat *stat, int flags)
 {
-	return vfs_statx(AT_FDCWD, filename, AT_NO_AUTOMOUNT,
+	return vfs_statx(dfd, filename, flags | AT_NO_AUTOMOUNT,
 			 stat, STATX_BASIC_STATS);
 }
-static inline int vfs_lstat(const char __user *name, struct kstat *stat)
+static inline int vfs_stat(const char __user *filename, struct kstat *stat)
 {
-	return vfs_statx(AT_FDCWD, name, AT_SYMLINK_NOFOLLOW | AT_NO_AUTOMOUNT,
-			 stat, STATX_BASIC_STATS);
+	return vfs_fstatat(AT_FDCWD, filename, stat, 0);
 }
-static inline int vfs_fstatat(int dfd, const char __user *filename,
-			      struct kstat *stat, int flags)
+static inline int vfs_lstat(const char __user *name, struct kstat *stat)
 {
-	return vfs_statx(dfd, filename, flags | AT_NO_AUTOMOUNT,
-			 stat, STATX_BASIC_STATS);
+	return vfs_fstatat(AT_FDCWD, name, stat, AT_SYMLINK_NOFOLLOW);
 }
 
 extern const char *vfs_get_link(struct dentry *, struct delayed_call *);