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[src/trunk]: src/tests/lib/libc/sys Move signal tests out of t_ptrace_wait.c ...
details: https://anonhg.NetBSD.org/src/rev/cc07c96839b0
branches: trunk
changeset: 932315:cc07c96839b0
user: kamil <kamil%NetBSD.org@localhost>
date: Mon May 04 23:49:31 2020 +0000
description:
Move signal tests out of t_ptrace_wait.c to t_ptrace_signal_wait.h
The same tests are now included with the preprocessor in t_ptrace_wait.c.
No functional change intended.
diffstat:
tests/lib/libc/sys/t_ptrace_signal_wait.h | 2224 +++++++++++++++++++++++++++++
tests/lib/libc/sys/t_ptrace_wait.c | 2220 +----------------------------
tests/lib/libc/sys/t_ptrace_wait3.c | 4 +-
tests/lib/libc/sys/t_ptrace_wait4.c | 4 +-
tests/lib/libc/sys/t_ptrace_wait6.c | 4 +-
tests/lib/libc/sys/t_ptrace_waitid.c | 4 +-
tests/lib/libc/sys/t_ptrace_waitpid.c | 4 +-
7 files changed, 2239 insertions(+), 2225 deletions(-)
diffs (truncated from 4591 to 300 lines):
diff -r 906eda0f236e -r cc07c96839b0 tests/lib/libc/sys/t_ptrace_signal_wait.h
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/lib/libc/sys/t_ptrace_signal_wait.h Mon May 04 23:49:31 2020 +0000
@@ -0,0 +1,2224 @@
+/* $NetBSD: t_ptrace_signal_wait.h,v 1.1 2020/05/04 23:49:31 kamil Exp $ */
+
+/*-
+ * Copyright (c) 2016, 2017, 2018, 2019, 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.
+ */
+
+
+static void
+traceme_raise(int sigval)
+{
+ const int exitval = 5;
+ pid_t child, wpid;
+#if defined(TWAIT_HAVE_STATUS)
+ int status;
+#endif
+
+ ptrace_state_t state, zero_state;
+ const int slen = sizeof(state);
+ struct ptrace_siginfo info;
+ memset(&zero_state, 0, sizeof(zero_state));
+ memset(&info, 0, sizeof(info));
+
+ 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);
+
+ DPRINTF("Before raising %s from child\n", strsignal(sigval));
+ FORKEE_ASSERT(raise(sigval) == 0);
+
+ 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);
+
+ DPRINTF("Before calling %s() for the child\n", TWAIT_FNAME);
+ TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child);
+
+ switch (sigval) {
+ case SIGKILL:
+ validate_status_signaled(status, sigval, 0);
+ SYSCALL_REQUIRE(
+ ptrace(PT_GET_PROCESS_STATE, child, &state, slen) == -1);
+
+ break;
+ default:
+ validate_status_stopped(status, sigval);
+
+ 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);
+
+ DPRINTF("Assert that PT_GET_PROCESS_STATE returns non-error");
+ SYSCALL_REQUIRE(
+ ptrace(PT_GET_PROCESS_STATE, child, &state, slen) != -1);
+ ATF_REQUIRE(memcmp(&state, &zero_state, slen) == 0);
+
+ DPRINTF("Before resuming the child process where it left off "
+ "and without signal to be sent\n");
+ SYSCALL_REQUIRE(ptrace(PT_CONTINUE, child, (void *)1, 0) != -1);
+
+ DPRINTF("Before calling %s() for the child\n", TWAIT_FNAME);
+ TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0),
+ child);
+ break;
+ }
+
+ DPRINTF("Before calling %s() for the child\n", TWAIT_FNAME);
+ TWAIT_REQUIRE_FAILURE(ECHILD, wpid = TWAIT_GENERIC(child, &status, 0));
+}
+
+#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_BODY(test, tc) \
+{ \
+ \
+ traceme_raise(sig); \
+}
+
+TRACEME_RAISE(traceme_raise1, SIGKILL) /* non-maskable */
+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 */
+
+/// ----------------------------------------------------------------------------
+
+static void
+traceme_raisesignal_ignored(int sigignored)
+{
+ const int exitval = 5;
+ const int sigval = SIGSTOP;
+ pid_t child, wpid;
+ struct sigaction sa;
+#if defined(TWAIT_HAVE_STATUS)
+ int status;
+#endif
+ struct ptrace_siginfo info;
+
+ memset(&info, 0, sizeof(info));
+
+ 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);
+
+ memset(&sa, 0, sizeof(sa));
+ sa.sa_handler = SIG_IGN;
+ sigemptyset(&sa.sa_mask);
+ FORKEE_ASSERT(sigaction(sigignored, &sa, NULL) != -1);
+
+ DPRINTF("Before raising %s from child\n", strsignal(sigval));
+ FORKEE_ASSERT(raise(sigval) == 0);
+
+ DPRINTF("Before raising %s from child\n",
+ strsignal(sigignored));
+ FORKEE_ASSERT(raise(sigignored) == 0);
+
+ DPRINTF("Before exiting of the child process\n");
+ _exit(exitval);
+ }
+ DPRINTF("Parent process PID=%d, child's PID=%d\n", getpid(), child);
+
+ DPRINTF("Before calling %s() for the child\n", TWAIT_FNAME);
+ TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child);
+
+ validate_status_stopped(status, sigval);
+
+ 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);
+
+ DPRINTF("Before resuming the child process where it left off and "
+ "without signal to be sent\n");
+ SYSCALL_REQUIRE(ptrace(PT_CONTINUE, child, (void *)1, 0) != -1);
+
+ DPRINTF("Before calling %s() for the child\n", TWAIT_FNAME);
+ TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child);
+
+ validate_status_stopped(status, sigignored);
+
+ 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, sigignored);
+ ATF_REQUIRE_EQ(info.psi_siginfo.si_code, SI_LWP);
+
+ DPRINTF("Before resuming the child process where it left off and "
+ "without signal to be sent\n");
+ SYSCALL_REQUIRE(ptrace(PT_CONTINUE, child, (void *)1, 0) != -1);
+
+ DPRINTF("Before calling %s() for the child\n", TWAIT_FNAME);
+ TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child);
+
+ validate_status_exited(status, exitval);
+
+ DPRINTF("Before calling %s() for the child\n", TWAIT_FNAME);
+ TWAIT_REQUIRE_FAILURE(ECHILD, wpid = TWAIT_GENERIC(child, &status, 0));
+}
+
+#define TRACEME_RAISESIGNAL_IGNORED(test, sig) \
+ATF_TC(test); \
+ATF_TC_HEAD(test, tc) \
+{ \
+ atf_tc_set_md_var(tc, "descr", \
+ "Verify that ignoring (with SIG_IGN) " #sig " in tracee " \
+ "does not stop tracer from catching this raised signal"); \
+} \
+ \
+ATF_TC_BODY(test, tc) \
+{ \
+ \
+ traceme_raisesignal_ignored(sig); \
+}
+
+// A signal handler for SIGKILL and SIGSTOP cannot be ignored.
+TRACEME_RAISESIGNAL_IGNORED(traceme_raisesignal_ignored1, SIGABRT) /* abort */
+TRACEME_RAISESIGNAL_IGNORED(traceme_raisesignal_ignored2, SIGHUP) /* hangup */
+TRACEME_RAISESIGNAL_IGNORED(traceme_raisesignal_ignored3, SIGCONT) /* cont. */
+TRACEME_RAISESIGNAL_IGNORED(traceme_raisesignal_ignored4, SIGTRAP) /* crash */
+TRACEME_RAISESIGNAL_IGNORED(traceme_raisesignal_ignored5, SIGBUS) /* crash */
+TRACEME_RAISESIGNAL_IGNORED(traceme_raisesignal_ignored6, SIGILL) /* crash */
+TRACEME_RAISESIGNAL_IGNORED(traceme_raisesignal_ignored7, SIGFPE) /* crash */
+TRACEME_RAISESIGNAL_IGNORED(traceme_raisesignal_ignored8, SIGSEGV) /* crash */
+
+/// ----------------------------------------------------------------------------
+
+static void
+traceme_raisesignal_masked(int sigmasked)
+{
+ const int exitval = 5;
+ const int sigval = SIGSTOP;
+ pid_t child, wpid;
+#if defined(TWAIT_HAVE_STATUS)
+ int status;
+#endif
+ sigset_t intmask;
+ struct ptrace_siginfo info;
+
+ memset(&info, 0, sizeof(info));
+
+ 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);
+
+ sigemptyset(&intmask);
+ sigaddset(&intmask, sigmasked);
+ sigprocmask(SIG_BLOCK, &intmask, NULL);
+
+ DPRINTF("Before raising %s from child\n", strsignal(sigval));
+ FORKEE_ASSERT(raise(sigval) == 0);
+
+ DPRINTF("Before raising %s breakpoint from child\n",
+ strsignal(sigmasked));
+ FORKEE_ASSERT(raise(sigmasked) == 0);
+
+ DPRINTF("Before exiting of the child process\n");
+ _exit(exitval);
+ }
+ DPRINTF("Parent process PID=%d, child's PID=%d\n", getpid(), child);
+
+ DPRINTF("Before calling %s() for the child\n", TWAIT_FNAME);
+ TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child);
+
+ validate_status_stopped(status, sigval);
+
+ DPRINTF("Before calling ptrace(2) with PT_GET_SIGINFO for child\n");
+ SYSCALL_REQUIRE(
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