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| author | Al Viro <viro@zeniv.linux.org.uk> | 2016-11-14 01:34:52 -0500 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2016-12-05 19:11:57 -0500 |
| commit | 7f49b471097011d03316d4ae1bc38f9c177126c3 (patch) | |
| tree | 2610a026458a42ae85b13f2be1afa2f81a49213d /fs/namei.c | |
| parent | ba8f46135ab19a6bc3ac11a16e8455956e13f6b1 (diff) | |
| download | linux-stable-7f49b471097011d03316d4ae1bc38f9c177126c3.tar.gz linux-stable-7f49b471097011d03316d4ae1bc38f9c177126c3.tar.bz2 linux-stable-7f49b471097011d03316d4ae1bc38f9c177126c3.zip | |
namei: shift interpretation of LOOKUP_FOLLOW inside should_follow_link()
Simplifies the arguments both for it and for walk_component()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/namei.c')
| -rw-r--r-- | fs/namei.c | 14 |
1 files changed, 4 insertions, 10 deletions
diff --git a/fs/namei.c b/fs/namei.c index ab4caccfe304..379168db782b 100644 --- a/fs/namei.c +++ b/fs/namei.c @@ -1737,7 +1737,7 @@ static inline int should_follow_link(struct nameidata *nd, struct path *link, { if (likely(!d_is_symlink(link->dentry))) return 0; - if (!follow) + if (!follow && !(nd->flags & LOOKUP_FOLLOW)) return 0; /* make sure that d_is_symlink above matches inode */ if (nd->flags & LOOKUP_RCU) { @@ -2248,12 +2248,7 @@ static inline int lookup_last(struct nameidata *nd) nd->flags |= LOOKUP_FOLLOW | LOOKUP_DIRECTORY; nd->flags &= ~LOOKUP_PARENT; - return walk_component(nd, - nd->flags & LOOKUP_FOLLOW - ? nd->depth - ? WALK_PUT | WALK_GET - : WALK_GET - : 0); + return walk_component(nd, nd->depth ? WALK_PUT : 0); } /* Returns 0 and nd will be valid on success; Retuns error, otherwise. */ @@ -2623,7 +2618,7 @@ mountpoint_last(struct nameidata *nd) if (nd->depth) put_link(nd); path.mnt = nd->path.mnt; - error = should_follow_link(nd, &path, nd->flags & LOOKUP_FOLLOW, + error = should_follow_link(nd, &path, 0, d_backing_inode(path.dentry), 0); if (unlikely(error)) return error; @@ -3319,8 +3314,7 @@ static int do_last(struct nameidata *nd, finish_lookup: if (nd->depth) put_link(nd); - error = should_follow_link(nd, &path, nd->flags & LOOKUP_FOLLOW, - inode, seq); + error = should_follow_link(nd, &path, 0, inode, seq); if (unlikely(error)) return error; |