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[src/trunk]: src/tests/libexec/ld.elf_so Add new RTLD test file for r_debug
details: https://anonhg.NetBSD.org/src/rev/25da801c776b
branches: trunk
changeset: 944165:25da801c776b
user: kamil <kamil%NetBSD.org@localhost>
date: Tue Sep 22 01:09:32 2020 +0000
description:
Add new RTLD test file for r_debug
New tests:
- self
- dlopen
Both check whether the r_debug structure seems to be well-formed, without
and with a dlopen(3) call.
diffstat:
distrib/sets/lists/debug/mi | 3 +-
distrib/sets/lists/tests/mi | 3 +-
tests/libexec/ld.elf_so/Makefile | 5 +-
tests/libexec/ld.elf_so/t_rtld_r_debug.c | 164 +++++++++++++++++++++++++++++++
4 files changed, 172 insertions(+), 3 deletions(-)
diffs (221 lines):
diff -r 824314eedb10 -r 25da801c776b distrib/sets/lists/debug/mi
--- a/distrib/sets/lists/debug/mi Tue Sep 22 00:55:08 2020 +0000
+++ b/distrib/sets/lists/debug/mi Tue Sep 22 01:09:32 2020 +0000
@@ -1,4 +1,4 @@
-# $NetBSD: mi,v 1.337 2020/09/15 07:00:04 mrg Exp $
+# $NetBSD: mi,v 1.338 2020/09/22 01:09:32 kamil Exp $
./etc/mtree/set.debug comp-sys-root
./usr/lib comp-sys-usr compatdir
./usr/lib/i18n/libBIG5_g.a comp-c-debuglib debuglib,compatfile
@@ -2359,6 +2359,7 @@
./usr/libdata/debug/usr/tests/libexec/ld.elf_so/t_dlerror-false.debug tests-libexec-debug debug,atf,pic,compattestfile
./usr/libdata/debug/usr/tests/libexec/ld.elf_so/t_dlinfo.debug tests-libexec-debug debug,atf,pic,compattestfile
./usr/libdata/debug/usr/tests/libexec/ld.elf_so/t_dlvsym.debug tests-libexec-debug debug,atf,pic,compattestfile
+./usr/libdata/debug/usr/tests/libexec/ld.elf_so/t_rtld_r_debug.debug tests-libexec-debug debug,atf,pic,compattestfile
./usr/libdata/debug/usr/tests/libexec/ld.elf_so/t_ifunc.debug tests-libexec-debug debug,atf,pic,compattestfile
./usr/libdata/debug/usr/tests/modules/k_helper3.debug tests-sys-debug debug,atf,rump
./usr/libdata/debug/usr/tests/modules/t_builtin.debug tests-sys-debug debug,atf,rump
diff -r 824314eedb10 -r 25da801c776b distrib/sets/lists/tests/mi
--- a/distrib/sets/lists/tests/mi Tue Sep 22 00:55:08 2020 +0000
+++ b/distrib/sets/lists/tests/mi Tue Sep 22 01:09:32 2020 +0000
@@ -1,4 +1,4 @@
-# $NetBSD: mi,v 1.924 2020/09/14 06:44:50 rillig Exp $
+# $NetBSD: mi,v 1.925 2020/09/22 01:09:33 kamil Exp $
#
# Note: don't delete entries from here - mark them as "obsolete" instead.
#
@@ -3768,6 +3768,7 @@
./usr/tests/libexec/ld.elf_so/t_dlinfo tests-libexec-tests compattestfile,atf,pic
./usr/tests/libexec/ld.elf_so/t_dlvsym tests-libexec-tests compattestfile,atf,pic
./usr/tests/libexec/ld.elf_so/t_ifunc tests-libexec-tests compattestfile,atf,pic
+./usr/tests/libexec/ld.elf_so/t_rtld_r_debug tests-libexec-tests compattestfile,atf,pic
./usr/tests/libexec/ld.elf_so/t_thread_local_dtor tests-libexec-tests compattestfile,atf,pic
./usr/tests/modules tests-sys-tests compattestfile,atf
./usr/tests/net tests-net-tests compattestfile,atf
diff -r 824314eedb10 -r 25da801c776b tests/libexec/ld.elf_so/Makefile
--- a/tests/libexec/ld.elf_so/Makefile Tue Sep 22 00:55:08 2020 +0000
+++ b/tests/libexec/ld.elf_so/Makefile Tue Sep 22 01:09:32 2020 +0000
@@ -1,4 +1,4 @@
-# $NetBSD: Makefile,v 1.10 2019/05/14 19:07:07 christos Exp $
+# $NetBSD: Makefile,v 1.11 2020/09/22 01:09:32 kamil Exp $
#
NOMAN= # defined
@@ -17,6 +17,9 @@
TESTSDIR= ${TESTSBASE}/libexec/ld.elf_so
TESTS_C+= t_dlerror-cleared t_dlerror-false t_dlinfo t_dlvsym t_ifunc
+TESTS_C+= t_rtld_r_debug
+
+COPTS.t_rtld_r_debug.c += ${${ACTIVE_CC} == "gcc" :? -Wno-maybe-uninitialized :}
LDADD.t_dlerror-false= -Wl,-rpath,/var/nonexistent/lib
LDADD.t_dlvsym= -Wl,-rpath,${TESTSDIR}/h_helper_symver_dso2
diff -r 824314eedb10 -r 25da801c776b tests/libexec/ld.elf_so/t_rtld_r_debug.c
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/libexec/ld.elf_so/t_rtld_r_debug.c Tue Sep 22 01:09:32 2020 +0000
@@ -0,0 +1,164 @@
+/* $NetBSD: t_rtld_r_debug.c,v 1.1 2020/09/22 01:09:32 kamil Exp $ */
+
+/*
+ * Copyright (c) 2020 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND
+ * CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
+ * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
+ * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
+ * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <sys/types.h>
+
+#include <atf-c.h>
+#include <dlfcn.h>
+#include <link_elf.h>
+#include <stdbool.h>
+
+#include "h_macros.h"
+
+static long int
+getauxval(unsigned int type)
+{
+ const AuxInfo *aux;
+
+ for (aux = _dlauxinfo(); aux->a_type != AT_NULL; ++aux) {
+ if (type == aux->a_type)
+ return aux->a_v;
+ }
+
+ return 0;
+}
+
+static Elf_Dyn *
+get_dynamic_section(void)
+{
+ uintptr_t relocbase = (uintptr_t)~0U;
+ const Elf_Phdr *phdr;
+ Elf_Half phnum;
+ const Elf_Phdr *phlimit, *dynphdr;
+
+ phdr = (void *)getauxval(AT_PHDR);
+ phnum = (Elf_Half)getauxval(AT_PHNUM);
+
+ ATF_CHECK(phdr != NULL);
+ ATF_CHECK(phnum != (Elf_Half)~0);
+
+ phlimit = phdr + phnum;
+ dynphdr = NULL;
+
+ for (; phdr < phlimit; ++phdr) {
+ if (phdr->p_type == PT_DYNAMIC)
+ dynphdr = phdr;
+ if (phdr->p_type == PT_PHDR)
+ relocbase = (uintptr_t)phdr - phdr->p_vaddr;
+ }
+
+ return (Elf_Dyn *)((uint8_t *)dynphdr->p_vaddr + relocbase);
+}
+
+static struct r_debug *
+get_rtld_r_debug(void)
+{
+ struct r_debug *debug;
+ Elf_Dyn *dynp;
+
+ for (dynp = get_dynamic_section(); dynp->d_tag != DT_NULL; dynp++) {
+ if (dynp->d_tag == DT_DEBUG) {
+ debug = (void *)dynp->d_un.d_val;
+ break;
+ }
+ }
+ ATF_CHECK(debug != NULL);
+
+ return debug;
+}
+
+static void
+check_r_debug_return_link_map(const char *name, struct link_map **rmap)
+{
+ struct r_debug *debug;
+ struct link_map *map;
+ void *loader;
+ bool found;
+
+ loader = NULL;
+ debug = get_rtld_r_debug();
+ ATF_CHECK(debug != NULL);
+ ATF_CHECK(debug->r_version == R_DEBUG_VERSION);
+ map = debug->r_map;
+ ATF_CHECK(map != NULL);
+
+ for (found = false; map; map = map->l_next) {
+ if (strstr(map->l_name, name) != NULL) {
+ if (rmap)
+ *rmap = map;
+ found = true;
+ } else if (strstr(map->l_name, "ld.elf_so") != NULL) {
+ loader = (void *)map->l_addr;
+ }
+ }
+ ATF_CHECK(found);
+ ATF_CHECK(loader != NULL);
+ ATF_CHECK(debug->r_brk != NULL);
+ ATF_CHECK(debug->r_state == RT_CONSISTENT);
+ ATF_CHECK(debug->r_ldbase == loader);
+}
+
+ATF_TC(self);
+ATF_TC_HEAD(self, tc)
+{
+ atf_tc_set_md_var(tc, "descr", "check whether r_debug is well-formed");
+}
+ATF_TC_BODY(self, tc)
+{
+ check_r_debug_return_link_map("t_rtld_r_debug", NULL);
+}
+
+ATF_TC(dlopen);
+ATF_TC_HEAD(dlopen, tc)
+{
+ atf_tc_set_md_var(tc, "descr",
+ "check whether r_debug is well-formed after an dlopen(3) call");
+}
+ATF_TC_BODY(dlopen, tc)
+{
+ void *handle;
+ struct link_map *map, *r_map;
+
+ handle = dlopen("libutil.so", RTLD_LAZY);
+ ATF_CHECK(handle);
+
+ check_r_debug_return_link_map("libutil.so", &r_map);
+
+ RZ(dlinfo(handle, RTLD_DI_LINKMAP, &map));
+
+ ATF_CHECK(map == r_map);
+ dlclose(handle);
+}
+
+ATF_TP_ADD_TCS(tp)
+{
+ ATF_TP_ADD_TC(tp, self);
+ ATF_TP_ADD_TC(tp, dlopen);
+ return atf_no_error();
+}
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