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authorChristoph Hellwig <hch@lst.de>2020-09-26 09:04:00 +0200
committerAl Viro <viro@zeniv.linux.org.uk>2020-09-27 04:55:05 +0200
commitb3f0515004a5ee41d65218303804bd57fdda027e (patch)
tree6521f7e8a4d4b8b44fbcb045b849b1fa2bbbc38b /fs/stat.c
parentfs: move vfs_fstatat out of line (diff)
downloadlinux-b3f0515004a5ee41d65218303804bd57fdda027e.tar.xz
linux-b3f0515004a5ee41d65218303804bd57fdda027e.zip
fs: remove vfs_stat_set_lookup_flags
The function really obsfucates checking for valid flags and setting the lookup flags. The fact that it returns -EINVAL through and unsigned return value, which is then used as boolean really doesn't help either. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/stat.c')
-rw-r--r--fs/stat.c33
1 files changed, 12 insertions, 21 deletions
diff --git a/fs/stat.c b/fs/stat.c
index ddf0176d4dbc..8acc4b14ac24 100644
--- a/fs/stat.c
+++ b/fs/stat.c
@@ -148,24 +148,6 @@ int vfs_fstat(int fd, struct kstat *stat)
return error;
}
-static inline unsigned vfs_stat_set_lookup_flags(unsigned *lookup_flags,
- int flags)
-{
- if ((flags & ~(AT_SYMLINK_NOFOLLOW | AT_NO_AUTOMOUNT |
- AT_EMPTY_PATH | KSTAT_QUERY_FLAGS)) != 0)
- return -EINVAL;
-
- *lookup_flags = LOOKUP_FOLLOW | LOOKUP_AUTOMOUNT;
- if (flags & AT_SYMLINK_NOFOLLOW)
- *lookup_flags &= ~LOOKUP_FOLLOW;
- if (flags & AT_NO_AUTOMOUNT)
- *lookup_flags &= ~LOOKUP_AUTOMOUNT;
- if (flags & AT_EMPTY_PATH)
- *lookup_flags |= LOOKUP_EMPTY;
-
- return 0;
-}
-
/**
* vfs_statx - Get basic and extra attributes by filename
* @dfd: A file descriptor representing the base dir for a relative filename
@@ -185,11 +167,20 @@ static int vfs_statx(int dfd, const char __user *filename, int flags,
struct kstat *stat, u32 request_mask)
{
struct path path;
- int error = -EINVAL;
- unsigned lookup_flags;
+ unsigned lookup_flags = 0;
+ int error;
- if (vfs_stat_set_lookup_flags(&lookup_flags, flags))
+ if (flags & ~(AT_SYMLINK_NOFOLLOW | AT_NO_AUTOMOUNT | AT_EMPTY_PATH |
+ KSTAT_QUERY_FLAGS))
return -EINVAL;
+
+ if (!(flags & AT_SYMLINK_NOFOLLOW))
+ lookup_flags |= LOOKUP_FOLLOW;
+ if (!(flags & AT_NO_AUTOMOUNT))
+ lookup_flags |= LOOKUP_AUTOMOUNT;
+ if (flags & AT_EMPTY_PATH)
+ lookup_flags |= LOOKUP_EMPTY;
+
retry:
error = user_path_at(dfd, filename, lookup_flags, &path);
if (error)