diff options
Diffstat (limited to 'fs/namei.c')
| -rw-r--r-- | fs/namei.c | 38 |
1 files changed, 5 insertions, 33 deletions
diff --git a/fs/namei.c b/fs/namei.c index 1b5c58ad4113..22535f133200 100644 --- a/fs/namei.c +++ b/fs/namei.c @@ -2028,6 +2028,8 @@ static int link_path_walk(const char *name, struct nameidata *nd) { int err; + if (IS_ERR(name)) + return PTR_ERR(name); while (*name=='/') name++; if (!*name) @@ -2265,12 +2267,7 @@ static int path_lookupat(struct nameidata *nd, unsigned flags, struct path *path const char *s = path_init(nd, flags); int err; - if (IS_ERR(s)) { - terminate_walk(nd); - return PTR_ERR(s); - } - - if (unlikely(flags & LOOKUP_DOWN)) { + if (unlikely(flags & LOOKUP_DOWN) && !IS_ERR(s)) { err = handle_lookup_down(nd); if (unlikely(err < 0)) { terminate_walk(nd); @@ -2281,10 +2278,6 @@ static int path_lookupat(struct nameidata *nd, unsigned flags, struct path *path while (!(err = link_path_walk(s, nd)) && ((err = lookup_last(nd)) > 0)) { s = trailing_symlink(nd); - if (IS_ERR(s)) { - err = PTR_ERR(s); - break; - } } if (!err) err = complete_walk(nd); @@ -2331,12 +2324,7 @@ static int path_parentat(struct nameidata *nd, unsigned flags, struct path *parent) { const char *s = path_init(nd, flags); - int err; - if (IS_ERR(s)) { - terminate_walk(nd); - return PTR_ERR(s); - } - err = link_path_walk(s, nd); + int err = link_path_walk(s, nd); if (!err) err = complete_walk(nd); if (!err) { @@ -2663,17 +2651,10 @@ path_mountpoint(struct nameidata *nd, unsigned flags, struct path *path) { const char *s = path_init(nd, flags); int err; - if (IS_ERR(s)) { - terminate_walk(nd); - return PTR_ERR(s); - } + while (!(err = link_path_walk(s, nd)) && (err = mountpoint_last(nd)) > 0) { s = trailing_symlink(nd); - if (IS_ERR(s)) { - err = PTR_ERR(s); - break; - } } if (!err) { *path = nd->path; @@ -3510,19 +3491,10 @@ static struct file *path_openat(struct nameidata *nd, } s = path_init(nd, flags); - if (IS_ERR(s)) { - terminate_walk(nd); - fput(file); - return ERR_CAST(s); - } while (!(error = link_path_walk(s, nd)) && (error = do_last(nd, file, op)) > 0) { nd->flags &= ~(LOOKUP_OPEN|LOOKUP_CREATE|LOOKUP_EXCL); s = trailing_symlink(nd); - if (IS_ERR(s)) { - error = PTR_ERR(s); - break; - } } terminate_walk(nd); out2: |