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namei: move the calls of may_follow_link() into follow_link() 

All remaining callers of the former are preceded by the latter

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2015-04-19 00:16:37 -04:00
parent 172a39a059
commit 21fef2176e
1 changed files with 6 additions and 15 deletions
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21
fs/namei.c
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@ -882,9 +882,12 @@ out:
static int follow_link(struct path *link, struct nameidata *nd, void **p) static int follow_link(struct path *link, struct nameidata *nd, void **p)
{ {
const char *s = get_link(link, nd, p); const char *s;
int error; int error = may_follow_link(link, nd);
if (unlikely(error))
return error;
nd->flags |= LOOKUP_PARENT;
s = get_link(link, nd, p);
if (unlikely(IS_ERR(s))) if (unlikely(IS_ERR(s)))
return PTR_ERR(s); return PTR_ERR(s);
if (unlikely(!s)) if (unlikely(!s))
@ -2002,10 +2005,6 @@ static int path_lookupat(int dfd, const struct filename *name,
while (err > 0) { while (err > 0) {
void *cookie; void *cookie;
struct path link = nd->link; struct path link = nd->link;
err = may_follow_link(&link, nd);
if (unlikely(err))
break;
nd->flags |= LOOKUP_PARENT;
err = follow_link(&link, nd, &cookie); err = follow_link(&link, nd, &cookie);
if (err) if (err)
break; break;
@ -2352,10 +2351,6 @@ path_mountpoint(int dfd, const struct filename *name, struct path *path,
while (err > 0) { while (err > 0) {
void *cookie; void *cookie;
struct path link = *path; struct path link = *path;
err = may_follow_link(&link, nd);
if (unlikely(err))
break;
nd->flags |= LOOKUP_PARENT;
err = follow_link(&link, nd, &cookie); err = follow_link(&link, nd, &cookie);
if (err) if (err)
break; break;
@ -3239,10 +3234,6 @@ static struct file *path_openat(int dfd, struct filename *pathname,
while (unlikely(error > 0)) { /* trailing symlink */ while (unlikely(error > 0)) { /* trailing symlink */
struct path link = nd->link; struct path link = nd->link;
void *cookie; void *cookie;
error = may_follow_link(&link, nd);
if (unlikely(error))
break;
nd->flags |= LOOKUP_PARENT;
nd->flags &= ~(LOOKUP_OPEN|LOOKUP_CREATE|LOOKUP_EXCL); nd->flags &= ~(LOOKUP_OPEN|LOOKUP_CREATE|LOOKUP_EXCL);
error = follow_link(&link, nd, &cookie); error = follow_link(&link, nd, &cookie);
if (unlikely(error)) if (unlikely(error))