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[glibc/history.git] / debug / getgroups_chk.c
blob8c3d99da7e72598c2e833f8a86432c91d6843ec6
1 /* Copyright (C) 2005, 2008 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
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.
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.
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, write to the Free
16 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
17 02111-1307 USA. */
19 #include <errno.h>
20 #include <unistd.h>
23 int
24 __getgroups_chk (int size, __gid_t list[], size_t listlen)
26 if (__builtin_expect (size < 0, 0))
28 __set_errno (EINVAL);
29 return -1;
32 if (__builtin_expect (size * sizeof (__gid_t) > listlen, 0))
33 __chk_fail ();
35 return __getgroups (size, list);