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- /* Return the number of entries in an ACL.
- Copyright (C) 2002-2003, 2005-2015 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 Andreas Gruenbacher. */
- #include <config.h>
- #include "acl-internal.h"
- /* This file assumes POSIX-draft like ACLs
- (Linux, FreeBSD, Mac OS X, IRIX, Tru64). */
- /* Return the number of entries in ACL.
- Return -1 and set errno upon failure to determine it. */
- int
- acl_entries (acl_t acl)
- {
- int count = 0;
- if (acl != NULL)
- {
- #if HAVE_ACL_FIRST_ENTRY /* Linux, FreeBSD, Mac OS X */
- # if HAVE_ACL_TYPE_EXTENDED /* Mac OS X */
- /* acl_get_entry returns 0 when it successfully fetches an entry,
- and -1/EINVAL at the end. */
- acl_entry_t ace;
- int got_one;
- for (got_one = acl_get_entry (acl, ACL_FIRST_ENTRY, &ace);
- got_one >= 0;
- got_one = acl_get_entry (acl, ACL_NEXT_ENTRY, &ace))
- count++;
- # else /* Linux, FreeBSD */
- /* acl_get_entry returns 1 when it successfully fetches an entry,
- and 0 at the end. */
- acl_entry_t ace;
- int got_one;
- for (got_one = acl_get_entry (acl, ACL_FIRST_ENTRY, &ace);
- got_one > 0;
- got_one = acl_get_entry (acl, ACL_NEXT_ENTRY, &ace))
- count++;
- if (got_one < 0)
- return -1;
- # endif
- #else /* IRIX, Tru64 */
- # if HAVE_ACL_TO_SHORT_TEXT /* IRIX */
- /* Don't use acl_get_entry: it is undocumented. */
- count = acl->acl_cnt;
- # endif
- # if HAVE_ACL_FREE_TEXT /* Tru64 */
- /* Don't use acl_get_entry: it takes only one argument and does not
- work. */
- count = acl->acl_num;
- # endif
- #endif
- }
- return count;
- }
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