tree b798097fd831eab39f35c8c2e5a8ccfd7a850ef5
parent 256984a83880ff7ac78055cb87baea48137f0b77
author Al Viro <viro@zeniv.linux.org.uk> 1216735161 -0400
committer Al Viro <viro@zeniv.linux.org.uk> 1217120014 -0400

[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>