1/* Copyright (C) 2005-2020 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 <unistd.h>
20
21
22int
23__getgroups_chk (int size, __gid_t list[], size_t listlen)
24{
25 if (__glibc_unlikely (size < 0))
26 {
27 __set_errno (EINVAL);
28 return -1;
29 }
30
31 if (__glibc_unlikely (size * sizeof (__gid_t) > listlen))
32 __chk_fail ();
33
34 return __getgroups (size, list);
35}
36