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pick_link(): check for WALK_TRAILING, not LOOKUP_PARENT

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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2020-01-19 12:48:44 -05:00
parent 8c4efe22e7
commit b1a8197240
1 changed files with 5 additions and 5 deletions
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10
fs/namei.c
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@ -1723,8 +1723,10 @@ static inline int handle_dots(struct nameidata *nd, int type)
return 0;
}
enum {WALK_TRAILING = 1, WALK_MORE = 2, WALK_NOFOLLOW = 4};
static const char *pick_link(struct nameidata *nd, struct path *link,
struct inode *inode, unsigned seq)
struct inode *inode, unsigned seq, int flags)
{
struct saved *last;
const char *res;
@ -1762,7 +1764,7 @@ static const char *pick_link(struct nameidata *nd, struct path *link,
clear_delayed_call(&last->done);
last->seq = seq;
if (!(nd->flags & LOOKUP_PARENT)) {
if (flags & WALK_TRAILING) {
error = may_follow_link(nd, inode);
if (unlikely(error))
return ERR_PTR(error);
@ -1819,8 +1821,6 @@ all_done: // pure jump
return NULL;
}
enum {WALK_TRAILING = 1, WALK_MORE = 2, WALK_NOFOLLOW = 4};
/*
* Do we need to follow links? We _really_ want to be able
* to do this check without having to look at inode->i_op,
@ -1849,7 +1849,7 @@ static const char *step_into(struct nameidata *nd, int flags,
if (read_seqcount_retry(&path.dentry->d_seq, seq))
return ERR_PTR(-ECHILD);
}
return pick_link(nd, &path, inode, seq);
return pick_link(nd, &path, inode, seq, flags);
}
static const char *walk_component(struct nameidata *nd, int flags)