+++ /dev/null
-/* unlinkdir.c - determine (and maybe change) whether we can unlink directories
-
- Copyright (C) 2005, 2006 Free Software Foundation, Inc.
-
- This program is free software: you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 3 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program. If not, see <http://www.gnu.org/licenses/>. */
-
-/* Written by Paul Eggert and Jim Meyering. */
-
-#include <config.h>
-
-#include "unlinkdir.h"
-
-#if HAVE_PRIV_H
-# include <priv.h>
-#endif
-#include <unistd.h>
-
-#if ! UNLINK_CANNOT_UNLINK_DIR
-
-/* Return true if we cannot unlink directories, false if we might be
- able to unlink directories. If possible, tell the kernel we don't
- want to be able to unlink directories, so that we can return true. */
-
-bool
-cannot_unlink_dir (void)
-{
- static bool initialized;
- static bool cannot;
-
- if (! initialized)
- {
-# if defined PRIV_EFFECTIVE && defined PRIV_SYS_LINKDIR
- /* We might be able to unlink directories if we cannot
- determine our privileges, or if we have the
- PRIV_SYS_LINKDIR privilege and cannot delete it. */
- priv_set_t *pset = priv_allocset ();
- if (pset)
- {
- cannot =
- (getppriv (PRIV_EFFECTIVE, pset) == 0
- && (! priv_ismember (pset, PRIV_SYS_LINKDIR)
- || (priv_delset (pset, PRIV_SYS_LINKDIR) == 0
- && setppriv (PRIV_SET, PRIV_EFFECTIVE, pset) == 0)));
- priv_freeset (pset);
- }
-# else
- /* In traditional Unix, only root can unlink directories. */
- cannot = (geteuid () != 0);
-# endif
- initialized = true;
- }
-
- return cannot;
-}
-
-#endif