Function cached_umask

src/copy.c:2887–2899

Return the user's umask, caching the result. FIXME: If the destination's parent directory has has a default ACL, some operating systems (e.g., GNU/Linux's "POSIX" ACLs) use that ACL's mask rather than the process umask. Currently, the callers of cached_umask incorrectly assume that this situation cannot occur. */

   ACL's mask rather than the process umask.  Currently, the callers
   of cached_umask incorrectly assume that this situation cannot occur.  */
extern mode_t
cached_umask (void)
{
  static mode_t mask;
  static bool cached;
  if (!cached)
    {
      cached = true;
      mask = umask (0);
      umask (mask);
    }
  return mask;
}