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[src/trunk]: src/tests/kernel Add new tests signal[67] in t_ptrace_wait{4, 6, i...
details: https://anonhg.NetBSD.org/src/rev/1cf5eeb4365e
branches: trunk
changeset: 821170:1cf5eeb4365e
user: kamil <kamil%NetBSD.org@localhost>
date: Fri Jan 27 00:34:52 2017 +0000
description:
Add new tests signal[67] in t_ptrace_wait{4,6,id,pid}
signal6:
Verify that masking SIGTRAP in tracee does not stop tracer from
catching PTRACE_FORK breakpoint
signal7:
Verify that masking SIGTRAP in tracee does not stop tracer from
catching PTRACE_VFORK breakpoint
signal6 fails due to PR kern/51918
signal6 fails due to PR kern/51918 and PR kern/51630
Sponsored by <The NetBSD Foundation>
diffstat:
tests/kernel/t_ptrace_wait.c | 268 ++++++++++++++++++++++++++++++++++++++++++-
1 files changed, 266 insertions(+), 2 deletions(-)
diffs (296 lines):
diff -r b7ca057b4ac5 -r 1cf5eeb4365e tests/kernel/t_ptrace_wait.c
--- a/tests/kernel/t_ptrace_wait.c Thu Jan 26 22:46:19 2017 +0000
+++ b/tests/kernel/t_ptrace_wait.c Fri Jan 27 00:34:52 2017 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: t_ptrace_wait.c,v 1.65 2017/01/26 22:46:19 kamil Exp $ */
+/* $NetBSD: t_ptrace_wait.c,v 1.66 2017/01/27 00:34:52 kamil Exp $ */
/*-
* Copyright (c) 2016 The NetBSD Foundation, Inc.
@@ -27,7 +27,7 @@
*/
#include <sys/cdefs.h>
-__RCSID("$NetBSD: t_ptrace_wait.c,v 1.65 2017/01/26 22:46:19 kamil Exp $");
+__RCSID("$NetBSD: t_ptrace_wait.c,v 1.66 2017/01/27 00:34:52 kamil Exp $");
#include <sys/param.h>
#include <sys/types.h>
@@ -6008,6 +6008,268 @@
TWAIT_REQUIRE_FAILURE(ECHILD, wpid = TWAIT_GENERIC(child, &status, 0));
}
+#if defined(TWAIT_HAVE_PID)
+ATF_TC(signal6);
+ATF_TC_HEAD(signal6, tc)
+{
+ atf_tc_set_md_var(tc, "descr",
+ "Verify that masking SIGTRAP in tracee does not stop tracer from "
+ "catching PTRACE_FORK breakpoint");
+}
+
+ATF_TC_BODY(signal6, tc)
+{
+ const int exitval = 5;
+ const int exitval2 = 15;
+ const int sigval = SIGSTOP;
+ const int sigmasked = SIGTRAP;
+ pid_t child, child2, wpid;
+#if defined(TWAIT_HAVE_STATUS)
+ int status;
+#endif
+ sigset_t intmask;
+ ptrace_state_t state;
+ const int slen = sizeof(state);
+ ptrace_event_t event;
+ const int elen = sizeof(event);
+
+ atf_tc_expect_fail("PR kern/51918");
+
+ printf("Before forking process PID=%d\n", getpid());
+ ATF_REQUIRE((child = fork()) != -1);
+ if (child == 0) {
+ printf("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);
+
+ printf("Before raising %s from child\n", strsignal(sigval));
+ FORKEE_ASSERT(raise(sigval) == 0);
+
+ FORKEE_ASSERT((child2 = fork()) != 1);
+
+ if (child2 == 0)
+ _exit(exitval2);
+
+ FORKEE_REQUIRE_SUCCESS
+ (wpid = TWAIT_GENERIC(child2, &status, 0), child2);
+
+ forkee_status_exited(status, exitval2);
+
+ printf("Before exiting of the child process\n");
+ _exit(exitval);
+ }
+ printf("Parent process PID=%d, child's PID=%d\n", getpid(), child);
+
+ printf("Before calling %s() for the child\n", TWAIT_FNAME);
+ TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child);
+
+ validate_status_stopped(status, sigval);
+
+ printf("Enable PTRACE_FORK in EVENT_MASK for the child %d\n", child);
+ event.pe_set_event = PTRACE_FORK;
+ ATF_REQUIRE(ptrace(PT_SET_EVENT_MASK, child, &event, elen) != -1);
+
+ printf("Before resuming the child process where it left off and "
+ "without signal to be sent\n");
+ ATF_REQUIRE(ptrace(PT_CONTINUE, child, (void *)1, 0) != -1);
+
+ printf("Before calling %s() for the child\n", TWAIT_FNAME);
+ TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child);
+
+ validate_status_stopped(status, sigmasked);
+
+ ATF_REQUIRE(ptrace(PT_GET_PROCESS_STATE, child, &state, slen) != -1);
+ ATF_REQUIRE_EQ(state.pe_report_event, PTRACE_FORK);
+
+ child2 = state.pe_other_pid;
+ printf("Reported PTRACE_FORK event with forkee %d\n", child2);
+
+ printf("Before calling %s() for the child2\n", TWAIT_FNAME);
+ TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child2, &status, 0),
+ child2);
+
+ validate_status_stopped(status, SIGTRAP);
+
+ ATF_REQUIRE(ptrace(PT_GET_PROCESS_STATE, child2, &state, slen) != -1);
+ ATF_REQUIRE_EQ(state.pe_report_event, PTRACE_FORK);
+ ATF_REQUIRE_EQ(state.pe_other_pid, child);
+
+ printf("Before resuming the forkee process where it left off and "
+ "without signal to be sent\n");
+ ATF_REQUIRE(ptrace(PT_CONTINUE, child2, (void *)1, 0) != -1);
+
+ printf("Before resuming the child process where it left off and "
+ "without signal to be sent\n");
+ ATF_REQUIRE(ptrace(PT_CONTINUE, child, (void *)1, 0) != -1);
+
+ printf("Before calling %s() for the forkee - expected exited\n",
+ TWAIT_FNAME);
+ TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child2, &status, 0),
+ child2);
+
+ validate_status_exited(status, exitval2);
+
+ printf("Before calling %s() for the forkee - expected no process\n",
+ TWAIT_FNAME);
+ TWAIT_REQUIRE_FAILURE(ECHILD,
+ wpid = TWAIT_GENERIC(child2, &status, 0));
+
+ printf("Before calling %s() for the child - expected stopped "
+ "SIGCHLD\n", TWAIT_FNAME);
+ TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child);
+
+ validate_status_stopped(status, SIGCHLD);
+
+ printf("Before resuming the child process where it left off and "
+ "without signal to be sent\n");
+ ATF_REQUIRE(ptrace(PT_CONTINUE, child, (void *)1, 0) != -1);
+
+ printf("Before calling %s() for the child - expected exited\n",
+ TWAIT_FNAME);
+ TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child);
+
+ validate_status_exited(status, exitval);
+
+ printf("Before calling %s() for the child - expected no process\n",
+ TWAIT_FNAME);
+ TWAIT_REQUIRE_FAILURE(ECHILD, wpid = TWAIT_GENERIC(child, &status, 0));
+}
+#endif
+
+#if defined(TWAIT_HAVE_PID)
+ATF_TC(signal7);
+ATF_TC_HEAD(signal7, tc)
+{
+ atf_tc_set_md_var(tc, "descr",
+ "Verify that masking SIGTRAP in tracee does not stop tracer from "
+ "catching PTRACE_VFORK breakpoint");
+}
+
+ATF_TC_BODY(signal7, tc)
+{
+ const int exitval = 5;
+ const int exitval2 = 15;
+ const int sigval = SIGSTOP;
+ const int sigmasked = SIGTRAP;
+ pid_t child, child2, wpid;
+#if defined(TWAIT_HAVE_STATUS)
+ int status;
+#endif
+ sigset_t intmask;
+ ptrace_state_t state;
+ const int slen = sizeof(state);
+ ptrace_event_t event;
+ const int elen = sizeof(event);
+
+ atf_tc_expect_fail("PR kern/51918 PR kern/51630");
+
+ printf("Before forking process PID=%d\n", getpid());
+ ATF_REQUIRE((child = fork()) != -1);
+ if (child == 0) {
+ printf("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);
+
+ printf("Before raising %s from child\n", strsignal(sigval));
+ FORKEE_ASSERT(raise(sigval) == 0);
+
+ FORKEE_ASSERT((child2 = fork()) != 1);
+
+ if (child2 == 0)
+ _exit(exitval2);
+
+ FORKEE_REQUIRE_SUCCESS
+ (wpid = TWAIT_GENERIC(child2, &status, 0), child2);
+
+ forkee_status_exited(status, exitval2);
+
+ printf("Before exiting of the child process\n");
+ _exit(exitval);
+ }
+ printf("Parent process PID=%d, child's PID=%d\n", getpid(), child);
+
+ printf("Before calling %s() for the child\n", TWAIT_FNAME);
+ TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child);
+
+ validate_status_stopped(status, sigval);
+
+ printf("Enable PTRACE_VFORK in EVENT_MASK for the child %d\n", child);
+ event.pe_set_event = PTRACE_VFORK;
+ ATF_REQUIRE(ptrace(PT_SET_EVENT_MASK, child, &event, elen) != -1);
+
+ printf("Before resuming the child process where it left off and "
+ "without signal to be sent\n");
+ ATF_REQUIRE(ptrace(PT_CONTINUE, child, (void *)1, 0) != -1);
+
+ printf("Before calling %s() for the child\n", TWAIT_FNAME);
+ TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child);
+
+ validate_status_stopped(status, sigmasked);
+
+ ATF_REQUIRE(ptrace(PT_GET_PROCESS_STATE, child, &state, slen) != -1);
+ ATF_REQUIRE_EQ(state.pe_report_event, PTRACE_VFORK);
+
+ child2 = state.pe_other_pid;
+ printf("Reported PTRACE_VFORK event with forkee %d\n", child2);
+
+ printf("Before calling %s() for the child2\n", TWAIT_FNAME);
+ TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child2, &status, 0),
+ child2);
+
+ validate_status_stopped(status, SIGTRAP);
+
+ ATF_REQUIRE(ptrace(PT_GET_PROCESS_STATE, child2, &state, slen) != -1);
+ ATF_REQUIRE_EQ(state.pe_report_event, PTRACE_VFORK);
+ ATF_REQUIRE_EQ(state.pe_other_pid, child);
+
+ printf("Before resuming the forkee process where it left off and "
+ "without signal to be sent\n");
+ ATF_REQUIRE(ptrace(PT_CONTINUE, child2, (void *)1, 0) != -1);
+
+ printf("Before resuming the child process where it left off and "
+ "without signal to be sent\n");
+ ATF_REQUIRE(ptrace(PT_CONTINUE, child, (void *)1, 0) != -1);
+
+ printf("Before calling %s() for the forkee - expected exited\n",
+ TWAIT_FNAME);
+ TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child2, &status, 0),
+ child2);
+
+ validate_status_exited(status, exitval2);
+
+ printf("Before calling %s() for the forkee - expected no process\n",
+ TWAIT_FNAME);
+ TWAIT_REQUIRE_FAILURE(ECHILD,
+ wpid = TWAIT_GENERIC(child2, &status, 0));
+
+ printf("Before calling %s() for the child - expected stopped "
+ "SIGCHLD\n", TWAIT_FNAME);
+ TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child);
+
+ validate_status_stopped(status, SIGCHLD);
+
+ printf("Before resuming the child process where it left off and "
+ "without signal to be sent\n");
+ ATF_REQUIRE(ptrace(PT_CONTINUE, child, (void *)1, 0) != -1);
+
+ printf("Before calling %s() for the child - expected exited\n",
+ TWAIT_FNAME);
+ TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child);
+
+ validate_status_exited(status, exitval);
+
+ printf("Before calling %s() for the child - expected no process\n",
+ TWAIT_FNAME);
+ TWAIT_REQUIRE_FAILURE(ECHILD, wpid = TWAIT_GENERIC(child, &status, 0));
+}
+#endif
+
ATF_TP_ADD_TCS(tp)
{
setvbuf(stdout, NULL, _IONBF, 0);
@@ -6115,6 +6377,8 @@
ATF_TP_ADD_TC(tp, signal3);
ATF_TP_ADD_TC_PT_STEP(tp, signal4);
ATF_TP_ADD_TC(tp, signal5);
+ ATF_TP_ADD_TC_HAVE_PID(tp, signal6);
+ ATF_TP_ADD_TC_HAVE_PID(tp, signal7);
return atf_no_error();
}
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