1/* Avoid all the buffer overflow messages on stderr.
2 Copyright (C) 2015-2023 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <https://www.gnu.org/licenses/>. */
18
19#include <support/support.h>
20
21#include <fcntl.h>
22#include <paths.h>
23#include <stdlib.h>
24#include <unistd.h>
25
26void
27ignore_stderr (void)
28{
29 int fd = open (_PATH_DEVNULL, O_WRONLY);
30 if (fd == -1)
31 close (STDERR_FILENO);
32 else
33 {
34 dup2 (fd, STDERR_FILENO);
35 close (fd);
36 }
37 setenv ("LIBC_FATAL_STDERR_", "1", 1);
38}
39