diff options
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/namei.c | 22 |
1 files changed, 17 insertions, 5 deletions
diff --git a/fs/namei.c b/fs/namei.c index 1ae34cd0d590..e408f4d0c85f 100644 --- a/fs/namei.c +++ b/fs/namei.c @@ -1763,6 +1763,7 @@ static int link_path_walk(const char *name, struct nameidata *nd) if (!*name) return 0; + nd->depth++; /* At this point we know we have a real path component. */ for(;;) { u64 hash_len; @@ -1823,15 +1824,18 @@ Walked: if (err) { const char *s; + nd->depth--; err = nd_alloc_stack(nd); + nd->depth++; if (unlikely(err)) { path_to_nameidata(&nd->link, nd); break; } nd->depth++; - + nd->depth--; s = get_link(nd); + nd->depth++; if (unlikely(IS_ERR(s))) { err = PTR_ERR(s); @@ -1841,7 +1845,9 @@ Walked: err = 0; if (unlikely(!s)) { /* jumped */ + nd->depth--; put_link(nd); + nd->depth++; nd->depth--; } else { if (*s == '/') { @@ -1855,7 +1861,7 @@ Walked: ; } nd->inode = nd->path.dentry->d_inode; - nd->stack[nd->depth].name = name; + nd->stack[nd->depth - 1].name = name; if (!*s) goto OK; name = s; @@ -1869,19 +1875,25 @@ Walked: } terminate_walk(nd); Err: - while (unlikely(nd->depth)) { + while (unlikely(nd->depth > 1)) { + nd->depth--; put_link(nd); + nd->depth++; nd->depth--; } + nd->depth--; return err; OK: - if (unlikely(nd->depth)) { - name = nd->stack[nd->depth].name; + if (unlikely(nd->depth > 1)) { + name = nd->stack[nd->depth - 1].name; err = walk_component(nd, LOOKUP_FOLLOW); + nd->depth--; put_link(nd); + nd->depth++; nd->depth--; goto Walked; } + nd->depth--; return 0; } |