mirror of
https://git.savannah.gnu.org/git/emacs.git
synced 2024-12-11 09:20:51 +00:00
76 lines
2.3 KiB
C
76 lines
2.3 KiB
C
/* Return the number of entries in an ACL.
|
|
|
|
Copyright (C) 2002-2003, 2005-2021 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 <https://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, Cygwin >= 2.5). */
|
|
|
|
/* 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, Cygwin >= 2.5 */
|
|
# 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, Cygwin >= 2.5 */
|
|
/* 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;
|
|
}
|