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[src/trunk]: src Add new ptrace(2) test file
details: https://anonhg.NetBSD.org/src/rev/86443f12319d
branches: trunk
changeset: 969938:86443f12319d
user: kamil <kamil%NetBSD.org@localhost>
date: Fri Mar 06 18:32:35 2020 +0000
description:
Add new ptrace(2) test file
t_ptrace_sigchld - for SIGCHLD handler + ptrace(2).
Right now a single test is enabled (raise(SIGKILL)) and marked as failed
as it never finishes as the child is never collected before exiting the
parent uninterested about its child (SA_NOCLDWAIT).
diffstat:
distrib/sets/lists/debug/mi | 3 +-
distrib/sets/lists/tests/mi | 3 +-
tests/lib/libc/sys/Makefile | 5 +-
tests/lib/libc/sys/t_ptrace_sigchld.c | 502 ++++++++++++++++++++++++++++++++++
4 files changed, 510 insertions(+), 3 deletions(-)
diffs (truncated from 566 to 300 lines):
diff -r c651397a47c6 -r 86443f12319d distrib/sets/lists/debug/mi
--- a/distrib/sets/lists/debug/mi Fri Mar 06 17:03:35 2020 +0000
+++ b/distrib/sets/lists/debug/mi Fri Mar 06 18:32:35 2020 +0000
@@ -1,4 +1,4 @@
-# $NetBSD: mi,v 1.296 2020/03/04 22:09:00 christos Exp $
+# $NetBSD: mi,v 1.297 2020/03/06 18:32:35 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
@@ -2154,6 +2154,7 @@
./usr/libdata/debug/usr/tests/lib/libc/sys/t_posix_fadvise.debug tests-lib-debug debug,atf,rump
./usr/libdata/debug/usr/tests/lib/libc/sys/t_posix_fallocate.debug tests-lib-debug debug,atf,compattestfile
./usr/libdata/debug/usr/tests/lib/libc/sys/t_ptrace.debug tests-lib-debug debug,atf,compattestfile
+./usr/libdata/debug/usr/tests/lib/libc/sys/t_ptrace_sigchld.debug tests-lib-debug debug,atf,compattestfile
./usr/libdata/debug/usr/tests/lib/libc/sys/t_ptrace_wait.debug tests-lib-debug debug,atf,compattestfile
./usr/libdata/debug/usr/tests/lib/libc/sys/t_ptrace_wait3.debug tests-lib-debug debug,atf,compattestfile
./usr/libdata/debug/usr/tests/lib/libc/sys/t_ptrace_wait4.debug tests-lib-debug debug,atf,compattestfile
diff -r c651397a47c6 -r 86443f12319d distrib/sets/lists/tests/mi
--- a/distrib/sets/lists/tests/mi Fri Mar 06 17:03:35 2020 +0000
+++ b/distrib/sets/lists/tests/mi Fri Mar 06 18:32:35 2020 +0000
@@ -1,4 +1,4 @@
-# $NetBSD: mi,v 1.830 2020/02/11 07:03:16 isaki Exp $
+# $NetBSD: mi,v 1.831 2020/03/06 18:32:35 kamil Exp $
#
# Note: don't delete entries from here - mark them as "obsolete" instead.
#
@@ -3149,6 +3149,7 @@
./usr/tests/lib/libc/sys/t_posix_fadvise tests-lib-tests atf,rump
./usr/tests/lib/libc/sys/t_posix_fallocate tests-lib-tests compattestfile,atf
./usr/tests/lib/libc/sys/t_ptrace tests-lib-tests compattestfile,atf
+./usr/tests/lib/libc/sys/t_ptrace_sigchld tests-lib-tests compattestfile,atf
./usr/tests/lib/libc/sys/t_ptrace_wait tests-lib-tests compattestfile,atf
./usr/tests/lib/libc/sys/t_ptrace_wait3 tests-lib-tests compattestfile,atf
./usr/tests/lib/libc/sys/t_ptrace_wait4 tests-lib-tests compattestfile,atf
diff -r c651397a47c6 -r 86443f12319d tests/lib/libc/sys/Makefile
--- a/tests/lib/libc/sys/Makefile Fri Mar 06 17:03:35 2020 +0000
+++ b/tests/lib/libc/sys/Makefile Fri Mar 06 18:32:35 2020 +0000
@@ -1,4 +1,4 @@
-# $NetBSD: Makefile,v 1.60 2020/03/01 20:24:07 christos Exp $
+# $NetBSD: Makefile,v 1.61 2020/03/06 18:32:35 kamil Exp $
MKMAN= no
@@ -53,6 +53,7 @@
TESTS_C+= t_poll
TESTS_C+= t_posix_fallocate
TESTS_C+= t_ptrace
+TESTS_C+= t_ptrace_sigchld
TESTS_C+= t_ptrace_wait
TESTS_C+= t_ptrace_wait3
TESTS_C+= t_ptrace_wait4
@@ -88,6 +89,8 @@
LDADD.t_getpid+= -lpthread
+LDADD.t_ptrace_sigchld+= -pthread -lm
+
LDADD.t_ptrace_wait+= -pthread -lm -lelf
LDADD.t_ptrace_wait3+= -pthread -lm -lelf
LDADD.t_ptrace_wait4+= -pthread -lm -lelf
diff -r c651397a47c6 -r 86443f12319d tests/lib/libc/sys/t_ptrace_sigchld.c
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/lib/libc/sys/t_ptrace_sigchld.c Fri Mar 06 18:32:35 2020 +0000
@@ -0,0 +1,502 @@
+/* $NetBSD: t_ptrace_sigchld.c,v 1.1 2020/03/06 18:32:35 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/cdefs.h>
+__RCSID("$NetBSD: t_ptrace_sigchld.c,v 1.1 2020/03/06 18:32:35 kamil Exp $");
+
+#include <sys/param.h>
+#include <sys/types.h>
+#include <sys/exec_elf.h>
+#include <sys/mman.h>
+#include <sys/ptrace.h>
+#include <sys/resource.h>
+#include <sys/stat.h>
+#include <sys/syscall.h>
+#include <sys/sysctl.h>
+#include <sys/uio.h>
+#include <sys/wait.h>
+#include <machine/reg.h>
+#include <assert.h>
+#include <elf.h>
+#include <err.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <lwp.h>
+#include <pthread.h>
+#include <sched.h>
+#include <signal.h>
+#include <spawn.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <strings.h>
+#include <time.h>
+#include <unistd.h>
+
+#include <atf-c.h>
+
+#include "h_macros.h"
+#include "msg.h"
+
+#include "t_ptrace_wait.h"
+
+#define SYSCALL_REQUIRE(expr) ATF_REQUIRE_MSG(expr, "%s: %s", # expr, \
+ strerror(errno))
+#define SYSCALL_REQUIRE_ERRNO(res, exp) ATF_REQUIRE_MSG(res == exp, \
+ "%d(%s) != %d", res, strerror(res), exp)
+
+static int debug = 0;
+
+#define DPRINTF(a, ...) do \
+ if (debug) \
+ printf("%s() %d.%d %s:%d " a, \
+ __func__, getpid(), _lwp_self(), __FILE__, __LINE__, ##__VA_ARGS__); \
+ while (/*CONSTCOND*/0)
+
+/// ----------------------------------------------------------------------------
+
+static int expected_signo;
+static int expected_code;
+static int expected_status;
+static pid_t expected_pid;
+
+static void
+sigchld_action(int sig, siginfo_t *info, void *ctx)
+{
+
+ FORKEE_ASSERT_EQ(info->si_signo, expected_signo);
+ FORKEE_ASSERT_EQ(info->si_code, expected_code);
+ FORKEE_ASSERT_EQ(info->si_uid, getuid());
+ FORKEE_ASSERT_EQ(info->si_pid, expected_pid);
+
+ if (WIFEXITED(info->si_status))
+ ATF_REQUIRE_EQ(WEXITSTATUS(info->si_status), expected_status);
+ else if (WIFSTOPPED(info->si_status))
+ ATF_REQUIRE_EQ(WSTOPSIG(info->si_status), expected_status);
+ else if (WIFSIGNALED(info->si_status))
+ ATF_REQUIRE_EQ(WTERMSIG(info->si_status), expected_status);
+/*
+ else if (WIFCONTINUED(info->si_status))
+ ;
+*/
+}
+
+static void
+traceme_raise(int sigval)
+{
+ const int exitval = 5;
+ struct sigaction sa;
+ pid_t child;
+ struct msg_fds parent_child;
+ uint8_t msg = 0xde; /* dummy message for IPC based on pipe(2) */
+
+ struct ptrace_siginfo info;
+ memset(&info, 0, sizeof(info));
+
+ memset(&sa, 0, sizeof(sa));
+ sa.sa_sigaction = sigchld_action;
+ sa.sa_flags = SA_SIGINFO | SA_NOCLDWAIT;
+ sigemptyset(&sa.sa_mask);
+
+ atf_tc_fail("XXX: zombie is not collected before tracer's death");
+
+ SYSCALL_REQUIRE(sigaction(SIGCHLD, &sa, NULL) == 0);
+
+ SYSCALL_REQUIRE(msg_open(&parent_child) == 0);
+
+ DPRINTF("Before forking process PID=%d\n", getpid());
+ SYSCALL_REQUIRE((child = fork()) != -1);
+ if (child == 0) {
+ DPRINTF("Before calling PT_TRACE_ME from child %d\n", getpid());
+ FORKEE_ASSERT(ptrace(PT_TRACE_ME, 0, NULL, 0) != -1);
+
+ CHILD_FROM_PARENT("raise1 child", parent_child, msg);
+
+ raise(sigval);
+
+ CHILD_TO_PARENT("raise2 child", parent_child, msg);
+
+ switch (sigval) {
+ case SIGKILL:
+ /* NOTREACHED */
+ FORKEE_ASSERTX(0 && "This shall not be reached");
+ __unreachable();
+ default:
+ DPRINTF("Before exiting of the child process\n");
+ _exit(exitval);
+ }
+ }
+ DPRINTF("Parent process PID=%d, child's PID=%d\n", getpid(), child);
+
+ expected_signo = SIGCHLD;
+ expected_pid = child;
+ switch (sigval) {
+ case SIGKILL:
+ expected_code = CLD_KILLED;
+ expected_status = SIGKILL;
+ break;
+ case SIGSTOP:
+ expected_code = CLD_STOPPED;
+ expected_status = SIGSTOP;
+ break;
+ default:
+ break;
+ }
+
+ PARENT_TO_CHILD("raise1 child", parent_child, msg);
+
+ switch (sigval) {
+ case SIGKILL:
+ break;
+ default:
+ PARENT_FROM_CHILD("raise2 child", parent_child, msg);
+
+ DPRINTF("Before calling ptrace(2) with PT_GET_SIGINFO for "
+ "child\n");
+ SYSCALL_REQUIRE(ptrace(PT_GET_SIGINFO, child, &info,
+ sizeof(info)) != -1);
+
+ DPRINTF("Signal traced to lwpid=%d\n", info.psi_lwpid);
+ DPRINTF("Signal properties: si_signo=%#x si_code=%#x "
+ "si_errno=%#x\n",
+ info.psi_siginfo.si_signo, info.psi_siginfo.si_code,
+ info.psi_siginfo.si_errno);
+
+ ATF_REQUIRE_EQ(info.psi_siginfo.si_signo, sigval);
+ ATF_REQUIRE_EQ(info.psi_siginfo.si_code, SI_LWP);
+
+ expected_code = CLD_EXITED;
+ expected_status = exitval;
+
+ SYSCALL_REQUIRE(ptrace(PT_CONTINUE, child, (void *)1, 0));
+
+ break;
+ }
+
+ await_collected(child); /* XXX: Process is never collected */
+}
+
+#define TRACEME_RAISE(test, sig) \
+ATF_TC(test); \
+ATF_TC_HEAD(test, tc) \
+{ \
+ atf_tc_set_md_var(tc, "descr", \
+ "Verify " #sig " followed by _exit(2) in a child"); \
+ atf_tc_set_md_var(tc, "timeout", "10"); \
+} \
+ \
+ATF_TC_BODY(test, tc) \
+{ \
+ \
+ traceme_raise(sig); \
+}
+
+TRACEME_RAISE(traceme_raise1, SIGKILL) /* non-maskable */
+#if notyet
+TRACEME_RAISE(traceme_raise2, SIGSTOP) /* non-maskable */
+TRACEME_RAISE(traceme_raise3, SIGABRT) /* regular abort trap */
+TRACEME_RAISE(traceme_raise4, SIGHUP) /* hangup */
+TRACEME_RAISE(traceme_raise5, SIGCONT) /* continued? */
+TRACEME_RAISE(traceme_raise6, SIGTRAP) /* crash signal */
+TRACEME_RAISE(traceme_raise7, SIGBUS) /* crash signal */
+TRACEME_RAISE(traceme_raise8, SIGILL) /* crash signal */
+TRACEME_RAISE(traceme_raise9, SIGFPE) /* crash signal */
+TRACEME_RAISE(traceme_raise10, SIGSEGV) /* crash signal */
+#endif
+
+ATF_TP_ADD_TCS(tp)
+{
+ setvbuf(stdout, NULL, _IONBF, 0);
+ setvbuf(stderr, NULL, _IONBF, 0);
+
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