1/* Setup a chroot environment for use within tests.
2 Copyright (C) 2017 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 <http://www.gnu.org/licenses/>. */
18
19#include <stdlib.h>
20#include <support/check.h>
21#include <support/namespace.h>
22#include <support/support.h>
23#include <support/temp_file.h>
24#include <support/test-driver.h>
25#include <support/xunistd.h>
26
27struct support_chroot *
28support_chroot_create (struct support_chroot_configuration conf)
29{
30 struct support_chroot *chroot = xmalloc (sizeof (*chroot));
31
32 chroot->path_chroot = xasprintf ("%s/tst-resolv-res_init-XXXXXX", test_dir);
33 if (mkdtemp (chroot->path_chroot) == NULL)
34 FAIL_EXIT1 ("mkdtemp (\"%s\"): %m", chroot->path_chroot);
35 add_temp_file (chroot->path_chroot);
36
37 /* Create the /etc directory in the chroot environment. */
38 char *path_etc = xasprintf ("%s/etc", chroot->path_chroot);
39 xmkdir (path_etc, 0777);
40 add_temp_file (path_etc);
41
42 if (conf.resolv_conf != NULL)
43 {
44 /* Create an empty resolv.conf file. */
45 chroot->path_resolv_conf = xasprintf ("%s/resolv.conf", path_etc);
46 add_temp_file (chroot->path_resolv_conf);
47 support_write_file_string (chroot->path_resolv_conf, conf.resolv_conf);
48 }
49 else
50 chroot->path_resolv_conf = NULL;
51
52 free (path_etc);
53
54 /* valgrind needs a temporary directory in the chroot. */
55 {
56 char *path_tmp = xasprintf ("%s/tmp", chroot->path_chroot);
57 xmkdir (path_tmp, 0777);
58 add_temp_file (path_tmp);
59 free (path_tmp);
60 }
61
62 return chroot;
63}
64
65void
66support_chroot_free (struct support_chroot *chroot)
67{
68 free (chroot->path_chroot);
69 free (chroot->path_resolv_conf);
70 free (chroot);
71}
72