1 /* Copyright (C) 1991-2022 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
8
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
13
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, see
16 <https://www.gnu.org/licenses/>. */
17
18 #include <errno.h>
19 #include <stddef.h>
20 #include <unistd.h>
21 #include <sys/types.h>
22 #include <limits.h>
23
24
25 /* If SIZE is zero, return the number of supplementary groups
26 the calling process is in. Otherwise, fill in the group IDs
27 of its supplementary groups in LIST and return the number written. */
28 int
__getgroups(int size,gid_t * list)29 __getgroups (int size, gid_t *list)
30 {
31 #if defined (NGROUPS_MAX) && NGROUPS_MAX == 0
32 /* The system has no supplementary groups. */
33 return 0;
34 #endif
35
36 __set_errno (ENOSYS);
37 return -1;
38 }
39
40 #if !(defined (NGROUPS_MAX) && NGROUPS_MAX == 0)
41 stub_warning (getgroups);
42 #endif
43
44 weak_alias (__getgroups, getgroups)
45