do_fchownat(): unspaghettify a bit...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

diff --git a/fs/open.c b/fs/open.c
index 7254eda9f4a58a7bcd544adb6550ab9bcef58185..425c09d83d7f44875691f78cd02c8b0b9a044fc5 100644 (file)
--- a/fs/open.c
+++ b/fs/open.c
@@ -810,30 +810,26 @@ int do_fchownat(int dfd, const char __user *filename, uid_t user, gid_t group,
        struct path path;
        int error;
        int lookup_flags;
-       struct filename *name;
 
        if ((flag & ~(AT_SYMLINK_NOFOLLOW | AT_EMPTY_PATH)) != 0)
                return -EINVAL;
 
        lookup_flags = (flag & AT_SYMLINK_NOFOLLOW) ? 0 : LOOKUP_FOLLOW;
-       name = getname_uflags(filename, flag);
+       CLASS(filename_uflags, name)(filename, flag);
 retry:
        error = filename_lookup(dfd, name, lookup_flags, &path, NULL);
-       if (error)
-               goto out;
-       error = mnt_want_write(path.mnt);
-       if (error)
-               goto out_release;
-       error = chown_common(&path, user, group);
-       mnt_drop_write(path.mnt);
-out_release:
-       path_put(&path);
-       if (retry_estale(error, lookup_flags)) {
-               lookup_flags |= LOOKUP_REVAL;
-               goto retry;
+       if (!error) {
+               error = mnt_want_write(path.mnt);
+               if (!error) {
+                       error = chown_common(&path, user, group);
+                       mnt_drop_write(path.mnt);
+               }
+               path_put(&path);
+               if (retry_estale(error, lookup_flags)) {
+                       lookup_flags |= LOOKUP_REVAL;
+                       goto retry;
+               }
        }
-out:
-       putname(name);
        return error;
 }