8597553f96
- Support an arbitrary number of search domains (#168253) - Detect and apply /etc/resolv.conf changes in libresolv (#1374239) - CVE-2015-5180: DNS stub resolver crash with crafted record type (#1251403)
692 lines
23 KiB
Diff
692 lines
23 KiB
Diff
commit 2714c5f3c95f90977167c1d21326d907fb76b419
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Author: Florian Weimer <fweimer@redhat.com>
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Date: Fri Jun 2 15:50:36 2017 +0200
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resolv: Tests for various versions of res_init
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diff --git a/resolv/Makefile b/resolv/Makefile
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index d41fd4603d7b7d77..0ebb2af795c6fb7b 100644
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--- a/resolv/Makefile
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+++ b/resolv/Makefile
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@@ -57,6 +57,11 @@ ifeq (yes,$(build-shared))
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tests += \
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tst-resolv-canonname \
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+# uses DEPRECATED_RES_USE_INET6 from <resolv-internal.h>.
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+tests += \
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+ tst-resolv-res_init \
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+ tst-resolv-res_init-thread \
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+
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endif
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# This test sends millions of packets and is rather slow.
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@@ -136,6 +141,9 @@ $(objpfx)tst-res_use_inet6: $(objpfx)libresolv.so $(shared-thread-library)
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$(objpfx)tst-resolv-basic: $(objpfx)libresolv.so $(shared-thread-library)
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$(objpfx)tst-resolv-edns: $(objpfx)libresolv.so $(shared-thread-library)
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$(objpfx)tst-resolv-network: $(objpfx)libresolv.so $(shared-thread-library)
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+$(objpfx)tst-resolv-res_init: $(libdl) $(objpfx)libresolv.so
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+$(objpfx)tst-resolv-res_init-thread: $(libdl) $(objpfx)libresolv.so \
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+ $(shared-thread-library)
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$(objpfx)tst-resolv-qtypes: $(objpfx)libresolv.so $(shared-thread-library)
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$(objpfx)tst-resolv-search: $(objpfx)libresolv.so $(shared-thread-library)
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$(objpfx)tst-resolv-canonname: \
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diff --git a/resolv/tst-resolv-res_init-skeleton.c b/resolv/tst-resolv-res_init-skeleton.c
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new file mode 100644
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index 0000000000000000..1d2c475c4b233131
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--- /dev/null
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+++ b/resolv/tst-resolv-res_init-skeleton.c
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@@ -0,0 +1,601 @@
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+/* Test parsing of /etc/resolv.conf. Genric version.
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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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+
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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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+
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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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+
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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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+
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+/* Before including this file, TEST_THREAD has to be defined to 0 or
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+ 1, depending on whether the threading tests should be compiled
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+ in. */
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+
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+#include <arpa/inet.h>
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+#include <gnu/lib-names.h>
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+#include <netdb.h>
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+#include <resolv/resolv-internal.h> /* For DEPRECATED_RES_USE_INET6. */
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+#include <stdio.h>
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+#include <stdlib.h>
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+#include <support/capture_subprocess.h>
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+#include <support/check.h>
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+#include <support/namespace.h>
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+#include <support/run_diff.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/xstdio.h>
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+#include <support/xunistd.h>
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+
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+#if TEST_THREAD
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+# include <support/xthread.h>
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+#endif
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+
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+/* This is the host name used to ensure predictable behavior of
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+ res_init. */
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+static const char *const test_hostname = "www.example.com";
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+
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+/* Path to the test root directory. */
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+static char *path_chroot;
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+
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+/* Path to resolv.conf under path_chroot (outside the chroot). */
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+static char *path_resolv_conf;
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+
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+static void
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+prepare (int argc, char **argv)
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+{
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+ path_chroot = xasprintf ("%s/tst-resolv-res_init-XXXXXX", test_dir);
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+ if (mkdtemp (path_chroot) == NULL)
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+ FAIL_EXIT1 ("mkdtemp (\"%s\"): %m", path_chroot);
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+ add_temp_file (path_chroot);
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+
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+ /* Create the /etc directory in the chroot environment. */
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+ char *path_etc = xasprintf ("%s/etc", path_chroot);
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+ xmkdir (path_etc, 0777);
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+ add_temp_file (path_etc);
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+
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+ /* Create an empty resolv.conf file. */
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+ path_resolv_conf = xasprintf ("%s/resolv.conf", path_etc);
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+ add_temp_file (path_resolv_conf);
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+ support_write_file_string (path_resolv_conf, "");
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+
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+ free (path_etc);
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+
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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", 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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+}
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+
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+/* Verify that the chroot environment has been set up. */
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+static void
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+check_chroot_working (void *closure)
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+{
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+ xchroot (path_chroot);
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+ FILE *fp = xfopen (_PATH_RESCONF, "r");
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+ xfclose (fp);
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+
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+ TEST_VERIFY_EXIT (res_init () == 0);
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+ TEST_VERIFY (_res.options & RES_INIT);
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+
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+ char buf[100];
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+ if (gethostname (buf, sizeof (buf)) < 0)
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+ FAIL_EXIT1 ("gethostname: %m");
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+ if (strcmp (buf, test_hostname) != 0)
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+ FAIL_EXIT1 ("unexpected host name: %s", buf);
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+}
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+
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+/* If FLAG is set in *OPTIONS, write NAME to FP, and clear it in
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+ *OPTIONS. */
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+static void
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+print_option_flag (FILE *fp, int *options, int flag, const char *name)
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+{
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+ if (*options & flag)
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+ {
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+ fprintf (fp, " %s", name);
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+ *options &= ~flag;
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+ }
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+}
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+
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+/* Write a decoded version of the resolver configuration *RESP to the
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+ stream FP. */
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+static void
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+print_resp (FILE *fp, res_state resp)
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+{
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+ /* The options directive. */
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+ {
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+ /* RES_INIT is used internally for tracking initialization. */
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+ TEST_VERIFY (resp->options & RES_INIT);
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+ /* Also mask out other default flags which cannot be set through
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+ the options directive. */
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+ int options
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+ = resp->options & ~(RES_INIT | RES_RECURSE | RES_DEFNAMES | RES_DNSRCH);
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+ if (options != 0
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+ || resp->ndots != 1
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+ || resp->retrans != RES_TIMEOUT
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+ || resp->retry != RES_DFLRETRY)
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+ {
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+ fputs ("options", fp);
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+ if (resp->ndots != 1)
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+ fprintf (fp, " ndots:%d", resp->ndots);
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+ if (resp->retrans != RES_TIMEOUT)
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+ fprintf (fp, " timeout:%d", resp->retrans);
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+ if (resp->retry != RES_DFLRETRY)
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+ fprintf (fp, " attempts:%d", resp->retry);
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+ print_option_flag (fp, &options, RES_USEVC, "use-vc");
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+ print_option_flag (fp, &options, DEPRECATED_RES_USE_INET6, "inet6");
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+ print_option_flag (fp, &options, RES_ROTATE, "rotate");
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+ print_option_flag (fp, &options, RES_USE_EDNS0, "edns0");
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+ print_option_flag (fp, &options, RES_SNGLKUP,
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+ "single-request");
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+ print_option_flag (fp, &options, RES_SNGLKUPREOP,
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+ "single-request-reopen");
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+ print_option_flag (fp, &options, RES_NOTLDQUERY, "no-tld-query");
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+ fputc ('\n', fp);
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+ if (options != 0)
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+ fprintf (fp, "; error: unresolved option bits: 0x%x\n", options);
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+ }
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+ }
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+
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+ /* The search and domain directives. */
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+ if (resp->dnsrch[0] != NULL)
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+ {
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+ fputs ("search", fp);
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+ for (int i = 0; i < MAXDNSRCH && resp->dnsrch[i] != NULL; ++i)
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+ {
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+ fputc (' ', fp);
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+ fputs (resp->dnsrch[i], fp);
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+ }
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+ fputc ('\n', fp);
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+ }
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+ else if (resp->defdname[0] != '\0')
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+ fprintf (fp, "domain %s\n", resp->defdname);
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+
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+ /* The sortlist directive. */
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+ if (resp->nsort > 0)
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+ {
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+ fputs ("sortlist", fp);
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+ for (int i = 0; i < resp->nsort && i < MAXRESOLVSORT; ++i)
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+ {
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+ char net[20];
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+ if (inet_ntop (AF_INET, &resp->sort_list[i].addr,
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+ net, sizeof (net)) == NULL)
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+ FAIL_EXIT1 ("inet_ntop: %m\n");
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+ char mask[20];
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+ if (inet_ntop (AF_INET, &resp->sort_list[i].mask,
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+ mask, sizeof (mask)) == NULL)
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+ FAIL_EXIT1 ("inet_ntop: %m\n");
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+ fprintf (fp, " %s/%s", net, mask);
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+ }
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+ fputc ('\n', fp);
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+ }
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+
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+ /* The nameserver directives. */
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+ for (size_t i = 0; i < resp->nscount; ++i)
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+ {
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+ char host[NI_MAXHOST];
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+ char service[NI_MAXSERV];
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+
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+ /* See get_nsaddr in res_send.c. */
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+ void *addr;
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+ size_t addrlen;
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+ if (resp->nsaddr_list[i].sin_family == 0
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+ && resp->_u._ext.nsaddrs[i] != NULL)
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+ {
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+ addr = resp->_u._ext.nsaddrs[i];
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+ addrlen = sizeof (*resp->_u._ext.nsaddrs[i]);
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+ }
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+ else
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+ {
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+ addr = &resp->nsaddr_list[i];
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+ addrlen = sizeof (resp->nsaddr_list[i]);
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+ }
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+
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+ int ret = getnameinfo (addr, addrlen,
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+ host, sizeof (host), service, sizeof (service),
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+ NI_NUMERICHOST | NI_NUMERICSERV);
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+ if (ret != 0)
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+ {
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+ if (ret == EAI_SYSTEM)
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+ fprintf (fp, "; error: getnameinfo: %m\n");
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+ else
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+ fprintf (fp, "; error: getnameinfo: %s\n", gai_strerror (ret));
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+ }
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+ else
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+ {
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+ fprintf (fp, "nameserver %s\n", host);
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+ if (strcmp (service, "53") != 0)
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+ fprintf (fp, "; unrepresentable port number %s\n\n", service);
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+ }
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+ }
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+
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+ TEST_VERIFY (!ferror (fp));
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+}
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+
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+/* Parameters of one test case. */
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+struct test_case
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+{
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+ /* A short, descriptive name of the test. */
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+ const char *name;
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+
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+ /* The contents of the /etc/resolv.conf file. */
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+ const char *conf;
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+
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+ /* The expected output from print_resp. */
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+ const char *expected;
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+
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+ /* Setting for the LOCALDOMAIN environment variable. NULL if the
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+ variable is not to be set. */
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+ const char *localdomain;
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+
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+ /* Setting for the RES_OPTIONS environment variable. NULL if the
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+ variable is not to be set. */
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+ const char *res_options;
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+};
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+
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+enum test_init
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+{
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+ test_init,
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+ test_ninit,
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+ test_mkquery,
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+ test_gethostbyname,
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+ test_getaddrinfo,
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+ test_init_method_last = test_getaddrinfo
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+};
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+
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+/* Closure argument for run_res_init. */
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+struct test_context
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+{
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+ enum test_init init;
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+ const struct test_case *t;
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+};
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+
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+static void
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+setup_nss_dns_and_chroot (void)
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+{
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+ /* Load nss_dns outside of the chroot. */
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+ if (dlopen (LIBNSS_DNS_SO, RTLD_LAZY) == NULL)
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+ FAIL_EXIT1 ("could not load " LIBNSS_DNS_SO ": %s", dlerror ());
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+ xchroot (path_chroot);
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+ /* Force the use of nss_dns. */
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+ __nss_configure_lookup ("hosts", "dns");
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+}
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+
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+/* Run res_ninit or res_init in a subprocess and dump the parsed
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+ resolver state to standard output. */
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+static void
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+run_res_init (void *closure)
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+{
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+ struct test_context *ctx = closure;
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+ TEST_VERIFY (getenv ("LOCALDOMAIN") == NULL);
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+ TEST_VERIFY (getenv ("RES_OPTIONS") == NULL);
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+ if (ctx->t->localdomain != NULL)
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+ setenv ("LOCALDOMAIN", ctx->t->localdomain, 1);
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+ if (ctx->t->res_options != NULL)
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+ setenv ("RES_OPTIONS", ctx->t->res_options, 1);
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+
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+ switch (ctx->init)
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+ {
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+ case test_init:
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+ xchroot (path_chroot);
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+ TEST_VERIFY (res_init () == 0);
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+ print_resp (stdout, &_res);
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+ return;
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+
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+ case test_ninit:
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+ xchroot (path_chroot);
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+ res_state resp = xmalloc (sizeof (*resp));
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+ memset (resp, 0, sizeof (*resp));
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+ TEST_VERIFY (res_ninit (resp) == 0);
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+ print_resp (stdout, resp);
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+ res_nclose (resp);
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+ free (resp);
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+ return;
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+
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+ case test_mkquery:
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+ xchroot (path_chroot);
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+ unsigned char buf[512];
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+ TEST_VERIFY (res_mkquery (QUERY, "www.example",
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+ C_IN, ns_t_a, NULL, 0,
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+ NULL, buf, sizeof (buf)) > 0);
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+ print_resp (stdout, &_res);
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+ return;
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+
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+ case test_gethostbyname:
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+ setup_nss_dns_and_chroot ();
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+ /* Trigger implicit initialization of the _res structure. The
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+ actual lookup result is immaterial. */
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+ (void )gethostbyname ("www.example");
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+ print_resp (stdout, &_res);
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+ return;
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+
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+ case test_getaddrinfo:
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+ setup_nss_dns_and_chroot ();
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+ /* Trigger implicit initialization of the _res structure. The
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+ actual lookup result is immaterial. */
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+ struct addrinfo *ai;
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+ (void) getaddrinfo ("www.example", NULL, NULL, &ai);
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+ print_resp (stdout, &_res);
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+ return;
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+ }
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+
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+ FAIL_EXIT1 ("invalid init method %d", ctx->init);
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+}
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+
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+#if TEST_THREAD
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+/* Helper function which calls run_res_init from a thread. */
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+static void *
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+run_res_init_thread_func (void *closure)
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+{
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+ run_res_init (closure);
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+ return NULL;
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+}
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+
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+/* Variant of res_run_init which runs the function on a non-main
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+ thread. */
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+static void
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+run_res_init_on_thread (void *closure)
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+{
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+ xpthread_join (xpthread_create (NULL, run_res_init_thread_func, closure));
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+}
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+#endif /* TEST_THREAD */
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+
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+struct test_case test_cases[] =
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+ {
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+ {.name = "empty file",
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+ .conf = "",
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+ .expected = "search example.com\n"
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+ "nameserver 127.0.0.1\n"
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+ },
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+ {.name = "empty file with LOCALDOMAIN",
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+ .conf = "",
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+ .expected = "search example.net\n"
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+ "nameserver 127.0.0.1\n",
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+ .localdomain = "example.net",
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+ },
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+ {.name = "empty file with RES_OPTIONS",
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+ .conf = "",
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+ .expected = "options attempts:5 edns0\n"
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+ "search example.com\n"
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+ "nameserver 127.0.0.1\n",
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+ .res_options = "edns0 attempts:5",
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+ },
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+ {.name = "empty file with RES_OPTIONS and LOCALDOMAIN",
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+ .conf = "",
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+ .expected = "options attempts:5 edns0\n"
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+ "search example.org\n"
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+ "nameserver 127.0.0.1\n",
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+ .localdomain = "example.org",
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+ .res_options = "edns0 attempts:5",
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+ },
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+ {.name = "basic",
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+ .conf = "domain example.net\n"
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+ "search corp.example.com example.com\n"
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+ "nameserver 192.0.2.1\n",
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+ .expected = "search corp.example.com example.com\n"
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+ "nameserver 192.0.2.1\n"
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+ },
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+ {.name = "whitespace",
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+ .conf = "# This test covers comment and whitespace processing "
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+ " (trailing whitespace,\n"
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+ "# missing newline at end of file).\n"
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+ "\n"
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+ "domain example.net\n"
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+ ";search commented out\n"
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+ "search corp.example.com\texample.com\n"
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+ "#nameserver 192.0.2.3\n"
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+ "nameserver 192.0.2.1 \n"
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+ "nameserver 192.0.2.2", /* No \n at end of file. */
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+ .expected = "search corp.example.com example.com\n"
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+ "nameserver 192.0.2.1\n"
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+ "nameserver 192.0.2.2\n"
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+ },
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+ {.name = "option values, multiple servers",
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+ .conf = "options\tinet6\tndots:3 edns0\tattempts:5\ttimeout:19\n"
|
|
+ "domain example.net\n"
|
|
+ ";domain comment\n"
|
|
+ "search corp.example.com\texample.com\n"
|
|
+ "nameserver 192.0.2.1\n"
|
|
+ "nameserver ::1\n"
|
|
+ "nameserver 192.0.2.2\n",
|
|
+ .expected = "options ndots:3 timeout:19 attempts:5 inet6 edns0\n"
|
|
+ "search corp.example.com example.com\n"
|
|
+ "nameserver 192.0.2.1\n"
|
|
+ "nameserver ::1\n"
|
|
+ "nameserver 192.0.2.2\n"
|
|
+ },
|
|
+ {.name = "out-of-range option vales",
|
|
+ .conf = "options use-vc timeout:999 attempts:999 ndots:99\n"
|
|
+ "search example.com\n",
|
|
+ .expected = "options ndots:15 timeout:30 attempts:5 use-vc\n"
|
|
+ "search example.com\n"
|
|
+ "nameserver 127.0.0.1\n"
|
|
+ },
|
|
+ {.name = "repeated directives",
|
|
+ .conf = "options ndots:3 use-vc\n"
|
|
+ "options edns0 ndots:2\n"
|
|
+ "domain corp.example\n"
|
|
+ "search example.net corp.example.com example.com\n"
|
|
+ "search example.org\n"
|
|
+ "search\n",
|
|
+ .expected = "options ndots:2 use-vc edns0\n"
|
|
+ "search example.org\n"
|
|
+ "nameserver 127.0.0.1\n"
|
|
+ },
|
|
+ {.name = "many name servers, sortlist",
|
|
+ .conf = "options single-request\n"
|
|
+ "search example.org example.com example.net corp.example.com\n"
|
|
+ "sortlist 192.0.2.0/255.255.255.0\n"
|
|
+ "nameserver 192.0.2.1\n"
|
|
+ "nameserver 192.0.2.2\n"
|
|
+ "nameserver 192.0.2.3\n"
|
|
+ "nameserver 192.0.2.4\n"
|
|
+ "nameserver 192.0.2.5\n"
|
|
+ "nameserver 192.0.2.6\n"
|
|
+ "nameserver 192.0.2.7\n"
|
|
+ "nameserver 192.0.2.8\n",
|
|
+ .expected = "options single-request\n"
|
|
+ "search example.org example.com example.net corp.example.com\n"
|
|
+ "sortlist 192.0.2.0/255.255.255.0\n"
|
|
+ "nameserver 192.0.2.1\n"
|
|
+ "nameserver 192.0.2.2\n"
|
|
+ "nameserver 192.0.2.3\n"
|
|
+ },
|
|
+ {.name = "IPv4 and IPv6 nameservers",
|
|
+ .conf = "options single-request\n"
|
|
+ "search example.org example.com example.net corp.example.com"
|
|
+ " legacy.example.com\n"
|
|
+ "sortlist 192.0.2.0\n"
|
|
+ "nameserver 192.0.2.1\n"
|
|
+ "nameserver 2001:db8::2\n"
|
|
+ "nameserver 192.0.2.3\n"
|
|
+ "nameserver 2001:db8::4\n"
|
|
+ "nameserver 192.0.2.5\n"
|
|
+ "nameserver 2001:db8::6\n"
|
|
+ "nameserver 192.0.2.7\n"
|
|
+ "nameserver 2001:db8::8\n",
|
|
+ .expected = "options single-request\n"
|
|
+ "search example.org example.com example.net corp.example.com"
|
|
+ " legacy.example.com\n"
|
|
+ "sortlist 192.0.2.0/255.255.255.0\n"
|
|
+ "nameserver 192.0.2.1\n"
|
|
+ "nameserver 2001:db8::2\n"
|
|
+ "nameserver 192.0.2.3\n"
|
|
+ },
|
|
+ {.name = "garbage after nameserver",
|
|
+ .conf = "nameserver 192.0.2.1 garbage\n"
|
|
+ "nameserver 192.0.2.2:5353\n"
|
|
+ "nameserver 192.0.2.3 5353\n",
|
|
+ .expected = "search example.com\n"
|
|
+ "nameserver 192.0.2.1\n"
|
|
+ "nameserver 192.0.2.3\n"
|
|
+ },
|
|
+ {.name = "RES_OPTIONS is cummulative",
|
|
+ .conf = "options timeout:7 ndots:2 use-vc\n"
|
|
+ "nameserver 192.0.2.1\n",
|
|
+ .expected = "options ndots:3 timeout:7 attempts:5 use-vc edns0\n"
|
|
+ "search example.com\n"
|
|
+ "nameserver 192.0.2.1\n",
|
|
+ .res_options = "attempts:5 ndots:3 edns0 ",
|
|
+ },
|
|
+ { NULL }
|
|
+ };
|
|
+
|
|
+/* Run the indicated test case. This function assumes that the chroot
|
|
+ contents has already been set up. */
|
|
+static void
|
|
+test_file_contents (const struct test_case *t)
|
|
+{
|
|
+#if TEST_THREAD
|
|
+ for (int do_thread = 0; do_thread < 2; ++do_thread)
|
|
+#endif
|
|
+ for (int init_method = 0; init_method <= test_init_method_last;
|
|
+ ++init_method)
|
|
+ {
|
|
+ if (test_verbose > 0)
|
|
+ printf ("info: testing init method %d\n", init_method);
|
|
+ struct test_context ctx = { .init = init_method, .t = t };
|
|
+ void (*func) (void *) = run_res_init;
|
|
+#if TEST_THREAD
|
|
+ if (do_thread)
|
|
+ func = run_res_init_on_thread;
|
|
+#endif
|
|
+ struct support_capture_subprocess proc
|
|
+ = support_capture_subprocess (func, &ctx);
|
|
+ if (strcmp (proc.out.buffer, t->expected) != 0)
|
|
+ {
|
|
+ support_record_failure ();
|
|
+ printf ("error: output mismatch for %s\n", t->name);
|
|
+ support_run_diff ("expected", t->expected,
|
|
+ "actual", proc.out.buffer);
|
|
+ }
|
|
+ support_capture_subprocess_check (&proc, t->name, 0,
|
|
+ sc_allow_stdout);
|
|
+ support_capture_subprocess_free (&proc);
|
|
+ }
|
|
+}
|
|
+
|
|
+static int
|
|
+do_test (void)
|
|
+{
|
|
+ support_become_root ();
|
|
+ support_enter_network_namespace ();
|
|
+ if (!support_in_uts_namespace () || !support_can_chroot ())
|
|
+ return EXIT_UNSUPPORTED;
|
|
+
|
|
+ /* We are in an UTS namespace, so we can set the host name without
|
|
+ altering the state of the entire system. */
|
|
+ if (sethostname (test_hostname, strlen (test_hostname)) != 0)
|
|
+ FAIL_EXIT1 ("sethostname: %m");
|
|
+
|
|
+ /* These environment variables affect resolv.conf parsing. */
|
|
+ unsetenv ("LOCALDOMAIN");
|
|
+ unsetenv ("RES_OPTIONS");
|
|
+
|
|
+ /* Ensure that the chroot setup worked. */
|
|
+ {
|
|
+ struct support_capture_subprocess proc
|
|
+ = support_capture_subprocess (check_chroot_working, NULL);
|
|
+ support_capture_subprocess_check (&proc, "chroot", 0, sc_allow_none);
|
|
+ support_capture_subprocess_free (&proc);
|
|
+ }
|
|
+
|
|
+ for (size_t i = 0; test_cases[i].name != NULL; ++i)
|
|
+ {
|
|
+ if (test_verbose > 0)
|
|
+ printf ("info: running test: %s\n", test_cases[i].name);
|
|
+ TEST_VERIFY (test_cases[i].conf != NULL);
|
|
+ TEST_VERIFY (test_cases[i].expected != NULL);
|
|
+
|
|
+ support_write_file_string (path_resolv_conf, test_cases[i].conf);
|
|
+
|
|
+ test_file_contents (&test_cases[i]);
|
|
+
|
|
+ /* The expected output from the empty file test is used for
|
|
+ further tests. */
|
|
+ if (test_cases[i].conf[0] == '\0')
|
|
+ {
|
|
+ if (test_verbose > 0)
|
|
+ printf ("info: special test: missing file\n");
|
|
+ TEST_VERIFY (unlink (path_resolv_conf) == 0);
|
|
+ test_file_contents (&test_cases[i]);
|
|
+
|
|
+ if (test_verbose > 0)
|
|
+ printf ("info: special test: dangling symbolic link\n");
|
|
+ TEST_VERIFY (symlink ("does-not-exist", path_resolv_conf) == 0);
|
|
+ test_file_contents (&test_cases[i]);
|
|
+ TEST_VERIFY (unlink (path_resolv_conf) == 0);
|
|
+
|
|
+ if (test_verbose > 0)
|
|
+ printf ("info: special test: unreadable file\n");
|
|
+ support_write_file_string (path_resolv_conf, "");
|
|
+ TEST_VERIFY (chmod (path_resolv_conf, 0) == 0);
|
|
+ test_file_contents (&test_cases[i]);
|
|
+
|
|
+ /* Restore the empty file. */
|
|
+ TEST_VERIFY (unlink (path_resolv_conf) == 0);
|
|
+ support_write_file_string (path_resolv_conf, "");
|
|
+ }
|
|
+ }
|
|
+
|
|
+ free (path_chroot);
|
|
+ path_chroot = NULL;
|
|
+ free (path_resolv_conf);
|
|
+ path_resolv_conf = NULL;
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+#define PREPARE prepare
|
|
+#include <support/test-driver.c>
|
|
diff --git a/resolv/tst-resolv-res_init-thread.c b/resolv/tst-resolv-res_init-thread.c
|
|
new file mode 100644
|
|
index 0000000000000000..f47ac34f7fc7a6c8
|
|
--- /dev/null
|
|
+++ b/resolv/tst-resolv-res_init-thread.c
|
|
@@ -0,0 +1,20 @@
|
|
+/* Test parsing of /etc/resolv.conf, threading version.
|
|
+ Copyright (C) 2017 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/>. */
|
|
+
|
|
+#define TEST_THREAD 1
|
|
+#include "tst-resolv-res_init-skeleton.c"
|
|
diff --git a/resolv/tst-resolv-res_init.c b/resolv/tst-resolv-res_init.c
|
|
new file mode 100644
|
|
index 0000000000000000..40c0154eca7363cb
|
|
--- /dev/null
|
|
+++ b/resolv/tst-resolv-res_init.c
|
|
@@ -0,0 +1,20 @@
|
|
+/* Test parsing of /etc/resolv.conf, non-threading version.
|
|
+ Copyright (C) 2017 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/>. */
|
|
+
|
|
+#define TEST_THREAD 0
|
|
+#include "tst-resolv-res_init-skeleton.c"
|