| /* Setup a chroot environment for use within tests. |
| Copyright (C) 2017-2018 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| |
| The GNU C Library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 of the License, or (at your option) any later version. |
| |
| The GNU C Library is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with the GNU C Library; if not, see |
| <http://www.gnu.org/licenses/>. */ |
| |
| #include <stdlib.h> |
| #include <support/check.h> |
| #include <support/namespace.h> |
| #include <support/support.h> |
| #include <support/temp_file.h> |
| #include <support/test-driver.h> |
| #include <support/xunistd.h> |
| |
| /* If CONTENTS is not NULL, write it to the file at DIRECTORY/RELPATH, |
| and store the name in *ABSPATH. If CONTENTS is NULL, store NULL in |
| *ABSPATH. */ |
| static void |
| write_file (const char *directory, const char *relpath, const char *contents, |
| char **abspath) |
| { |
| if (contents != NULL) |
| { |
| *abspath = xasprintf ("%s/%s", directory, relpath); |
| add_temp_file (*abspath); |
| support_write_file_string (*abspath, contents); |
| } |
| else |
| *abspath = NULL; |
| } |
| |
| struct support_chroot * |
| support_chroot_create (struct support_chroot_configuration conf) |
| { |
| struct support_chroot *chroot = xmalloc (sizeof (*chroot)); |
| chroot->path_chroot = support_create_temp_directory ("tst-resolv-res_init-"); |
| |
| /* Create the /etc directory in the chroot environment. */ |
| char *path_etc = xasprintf ("%s/etc", chroot->path_chroot); |
| xmkdir (path_etc, 0777); |
| add_temp_file (path_etc); |
| |
| write_file (path_etc, "resolv.conf", conf.resolv_conf, |
| &chroot->path_resolv_conf); |
| write_file (path_etc, "hosts", conf.hosts, &chroot->path_hosts); |
| write_file (path_etc, "host.conf", conf.host_conf, &chroot->path_host_conf); |
| |
| free (path_etc); |
| |
| /* valgrind needs a temporary directory in the chroot. */ |
| { |
| char *path_tmp = xasprintf ("%s/tmp", chroot->path_chroot); |
| xmkdir (path_tmp, 0777); |
| add_temp_file (path_tmp); |
| free (path_tmp); |
| } |
| |
| return chroot; |
| } |
| |
| void |
| support_chroot_free (struct support_chroot *chroot) |
| { |
| free (chroot->path_chroot); |
| free (chroot->path_resolv_conf); |
| free (chroot->path_hosts); |
| free (chroot->path_host_conf); |
| free (chroot); |
| } |