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86 lines
2.7 KiB
C
86 lines
2.7 KiB
C
/* Setup a chroot environment for use within tests.
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Copyright (C) 2017 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#include <stdlib.h>
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#include <support/check.h>
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#include <support/namespace.h>
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#include <support/support.h>
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#include <support/temp_file.h>
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#include <support/test-driver.h>
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#include <support/xunistd.h>
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/* If CONTENTS is not NULL, write it to the file at DIRECTORY/RELPATH,
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and store the name in *ABSPATH. If CONTENTS is NULL, store NULL in
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*ABSPATH. */
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static void
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write_file (const char *directory, const char *relpath, const char *contents,
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char **abspath)
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{
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if (contents != NULL)
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{
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*abspath = xasprintf ("%s/%s", directory, relpath);
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add_temp_file (*abspath);
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support_write_file_string (*abspath, contents);
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}
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else
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*abspath = NULL;
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}
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struct support_chroot *
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support_chroot_create (struct support_chroot_configuration conf)
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{
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struct support_chroot *chroot = xmalloc (sizeof (*chroot));
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chroot->path_chroot = xasprintf ("%s/tst-resolv-res_init-XXXXXX", test_dir);
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if (mkdtemp (chroot->path_chroot) == NULL)
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FAIL_EXIT1 ("mkdtemp (\"%s\"): %m", chroot->path_chroot);
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add_temp_file (chroot->path_chroot);
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/* Create the /etc directory in the chroot environment. */
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char *path_etc = xasprintf ("%s/etc", chroot->path_chroot);
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xmkdir (path_etc, 0777);
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add_temp_file (path_etc);
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write_file (path_etc, "resolv.conf", conf.resolv_conf,
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&chroot->path_resolv_conf);
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write_file (path_etc, "hosts", conf.hosts, &chroot->path_hosts);
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write_file (path_etc, "host.conf", conf.host_conf, &chroot->path_host_conf);
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free (path_etc);
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/* valgrind needs a temporary directory in the chroot. */
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{
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char *path_tmp = xasprintf ("%s/tmp", chroot->path_chroot);
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xmkdir (path_tmp, 0777);
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add_temp_file (path_tmp);
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free (path_tmp);
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}
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return chroot;
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}
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void
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support_chroot_free (struct support_chroot *chroot)
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{
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free (chroot->path_chroot);
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free (chroot->path_resolv_conf);
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free (chroot->path_hosts);
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free (chroot->path_host_conf);
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free (chroot);
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}
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