154 lines
3.5 KiB
C
154 lines
3.5 KiB
C
/* Test that reloading is disabled after a chroot.
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Copyright (C) 2020-2022 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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<https://www.gnu.org/licenses/>. */
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#include <nss.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <limits.h>
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#include <sys/types.h>
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#include <errno.h>
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#include <pwd.h>
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#include <grp.h>
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#include <unistd.h>
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#include <netdb.h>
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#include <support/support.h>
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#include <support/check.h>
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#include <support/xunistd.h>
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#include "nss_test.h"
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#ifndef PATH_MAX
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# define PATH_MAX 1024
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#endif
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static struct passwd pwd_table1[] =
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{
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PWD_N (1234, "test1"),
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PWD_N (4321, "test2"),
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PWD_LAST ()
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};
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static const char *group_4[] = {
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"alpha", "beta", "gamma", "fred", NULL
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};
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static struct group group_table_data1[] =
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{
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GRP (4),
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GRP_LAST ()
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};
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void
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_nss_test1_init_hook (test_tables *t)
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{
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t->pwd_table = pwd_table1;
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t->grp_table = group_table_data1;
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}
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static struct passwd pwd_table2[] =
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{
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PWD_N (5, "test1"),
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PWD_N (2468, "test2"),
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PWD_LAST ()
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};
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static const char *group_5[] = {
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"fred", NULL
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};
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static struct group group_table_data2[] =
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{
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GRP (5),
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GRP_LAST ()
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};
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void
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_nss_test2_init_hook (test_tables *t)
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{
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t->pwd_table = pwd_table2;
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t->grp_table = group_table_data2;
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}
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static int
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do_test (void)
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{
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struct passwd *pw;
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struct group *gr;
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struct hostent *he;
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char buf1[PATH_MAX];
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char buf2[PATH_MAX];
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support_need_proc ("Our xmkdirp fails if we can't map our uid, which requires /proc.");
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sprintf (buf1, "/subdir%s", support_slibdir_prefix);
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xmkdirp (buf1, 0777);
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/* Copy this DSO into the chroot so it *could* be loaded. */
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sprintf (buf1, "%s/libnss_files.so.2", support_slibdir_prefix);
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sprintf (buf2, "/subdir%s/libnss_files.so.2", support_slibdir_prefix);
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support_copy_file (buf1, buf2);
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/* Check we're using the "outer" nsswitch.conf. */
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/* This uses the test1 DSO. */
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pw = getpwnam ("test1");
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TEST_VERIFY (pw != NULL);
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if (pw)
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TEST_COMPARE (pw->pw_uid, 1234);
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/* This just loads the test2 DSO. */
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gr = getgrgid (5);
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TEST_VERIFY (gr != NULL);
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/* Change the root dir. */
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TEST_VERIFY (chroot ("/subdir") == 0);
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chdir ("/");
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/* Check we're NOT using the "inner" nsswitch.conf. */
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/* Both DSOs are loaded, which is used? */
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pw = getpwnam ("test2");
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TEST_VERIFY (pw != NULL);
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if (pw)
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TEST_VERIFY (pw->pw_uid != 2468);
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/* We should still be using the old configuration. */
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pw = getpwnam ("test1");
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TEST_VERIFY (pw != NULL);
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if (pw)
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TEST_COMPARE (pw->pw_uid, 1234);
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gr = getgrgid (5);
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TEST_VERIFY (gr != NULL);
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gr = getgrnam ("name4");
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TEST_VERIFY (gr == NULL);
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/* hosts in the outer nsswitch is files; the inner one is test1.
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Verify that we're still using the outer nsswitch *and* that we
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can load the files DSO. */
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he = gethostbyname ("test2");
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TEST_VERIFY (he != NULL);
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return 0;
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}
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#include <support/test-driver.c>
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