Function make_ancestor

src/mkdir.c:134–160

Make ancestor directory DIR, whose last component is COMPONENT, with options OPTIONS. Assume the working directory is COMPONENT's parent. Return 0 if successful and the resulting directory is readable, 1 if successful but the resulting directory is not readable, -1 (setting errno) otherwise. */

   readable, 1 if successful but the resulting directory is not
   readable, -1 (setting errno) otherwise.  */
static int
make_ancestor (char const *dir, char const *component, void *options)
{
  struct mkdir_options const *o = options;

  if (o->set_security_context
      && defaultcon (o->set_security_context, component, S_IFDIR) < 0
      && ! ignorable_ctx_err (errno))
    error (0, errno, _("failed to set default creation context for %s"),
           quoteaf (dir));

  if (o->umask_ancestor != o->umask_self)
    umask (o->umask_ancestor);
  int r = mkdir (component, S_IRWXUGO);
  if (o->umask_ancestor != o->umask_self)
    {
      int mkdir_errno = errno;
      umask (o->umask_self);
      errno = mkdir_errno;
    }
  if (r == 0)
    {
      r = (o->umask_ancestor & S_IRUSR) != 0;
      announce_mkdir (dir, options);
    }
  return r;
}

/* Process a command-line file name.  */
static int