[PATCH] sanitize __user_walk_fd() et.al.

* do not pass nameidata; struct path is all the callers want.
* switch to new helpers:
	user_path_at(dfd, pathname, flags, &path)
	user_path(pathname, &path)
	user_lpath(pathname, &path)
	user_path_dir(pathname, &path)  (fail if not a directory)
  The last 3 are trivial macro wrappers for the first one.
* remove nameidata in callers.

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

1 files changed, 4 insertions, 4 deletions

diff --git a/fs/utimes.c b/fs/utimes.c
index dc28b7826259..6929e3e91d05 100644
--- a/fs/utimes.c
+++ b/fs/utimes.c
@@ -152,18 +152,18 @@ long do_utimes(int dfd, char __user *filename, struct timespec *times, int flags
                 error = utimes_common(&file->f_path, times);
                 fput(file);
         } else {
-                struct nameidata nd;
+                struct path path;
                 int lookup_flags = 0;
 
                 if (!(flags & AT_SYMLINK_NOFOLLOW))
                         lookup_flags |= LOOKUP_FOLLOW;
 
-                error = __user_walk_fd(dfd, filename, lookup_flags, &nd);
+                error = user_path_at(dfd, filename, lookup_flags, &path);
                 if (error)
                         goto out;
 
-                error = utimes_common(&nd.path, times);
-                path_put(&nd.path);
+                error = utimes_common(&path, times);
+                path_put(&path);
         }
 
 out: