Module Name: src
Committed By: kamil
Date: Thu Jan 26 20:15:44 UTC 2017
Modified Files:
src/tests/kernel: t_ptrace_wait.c
Log Message:
Add new tests signal[23] in t_ptrace_wait{,3,4,6,id,pid}
signal2:
Verify that masking SIGTRAP in tracee stops tracer from
catching this raised signal
signal3:
Verify that masking SIGTRAP in tracee does not stop tracer from
catching software breakpoints
signal3 is marked as failing and refrenced with PR kern/51918
Currently signal3 requires code for other architectures than x86_64
Sponsored by <The NetBSD Foundation>
To generate a diff of this commit:
cvs rdiff -u -r1.62 -r1.63 src/tests/kernel/t_ptrace_wait.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/tests/kernel/t_ptrace_wait.c
diff -u src/tests/kernel/t_ptrace_wait.c:1.62 src/tests/kernel/t_ptrace_wait.c:1.63
--- src/tests/kernel/t_ptrace_wait.c:1.62 Thu Jan 26 17:03:21 2017
+++ src/tests/kernel/t_ptrace_wait.c Thu Jan 26 20:15:44 2017
@@ -1,4 +1,4 @@
-/* $NetBSD: t_ptrace_wait.c,v 1.62 2017/01/26 17:03:21 kamil Exp $ */
+/* $NetBSD: t_ptrace_wait.c,v 1.63 2017/01/26 20:15:44 kamil Exp $ */
/*-
* Copyright (c) 2016 The NetBSD Foundation, Inc.
@@ -27,7 +27,7 @@
*/
#include <sys/cdefs.h>
-__RCSID("$NetBSD: t_ptrace_wait.c,v 1.62 2017/01/26 17:03:21 kamil Exp $");
+__RCSID("$NetBSD: t_ptrace_wait.c,v 1.63 2017/01/26 20:15:44 kamil Exp $");
#include <sys/param.h>
#include <sys/types.h>
@@ -5734,6 +5734,138 @@ ATF_TC_BODY(signal1, tc)
TWAIT_REQUIRE_FAILURE(ECHILD, wpid = TWAIT_GENERIC(child, &status, 0));
}
+ATF_TC(signal2);
+ATF_TC_HEAD(signal2, tc)
+{
+ atf_tc_set_md_var(tc, "descr",
+ "Verify that masking SIGTRAP in tracee stops tracer from "
+ "catching this raised signal");
+}
+
+ATF_TC_BODY(signal2, tc)
+{
+ const int exitval = 5;
+ const int sigval = SIGSTOP;
+ const int sigmasked = SIGTRAP;
+ pid_t child, wpid;
+#if defined(TWAIT_HAVE_STATUS)
+ int status;
+#endif
+ sigset_t intmask;
+
+ 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);
+
+ printf("Before raising %s breakpoint from child\n",
+ strsignal(sigmasked));
+ FORKEE_ASSERT(raise(sigmasked) == 0);
+
+ 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("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_exited(status, exitval);
+
+ printf("Before calling %s() for the child\n", TWAIT_FNAME);
+ TWAIT_REQUIRE_FAILURE(ECHILD, wpid = TWAIT_GENERIC(child, &status, 0));
+}
+
+ATF_TC(signal3);
+ATF_TC_HEAD(signal3, tc)
+{
+ atf_tc_set_md_var(tc, "descr",
+ "Verify that masking SIGTRAP in tracee does not stop tracer from "
+ "catching software breakpoints");
+}
+
+ATF_TC_BODY(signal3, tc)
+{
+ const int exitval = 5;
+ const int sigval = SIGSTOP;
+ const int sigmasked = SIGTRAP;
+ pid_t child, wpid;
+#if defined(TWAIT_HAVE_STATUS)
+ int status;
+#endif
+ sigset_t intmask;
+
+ 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);
+
+ printf("Before raising software breakpoint from child\n");
+#if defined(__x86_64__)
+ __asm__ __volatile__ ("int3\n;");
+#else
+ /* port me */
+#endif
+
+ 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("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);
+
+ 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_exited(status, exitval);
+
+ printf("Before calling %s() for the child\n", TWAIT_FNAME);
+ TWAIT_REQUIRE_FAILURE(ECHILD, wpid = TWAIT_GENERIC(child, &status, 0));
+}
+
ATF_TP_ADD_TCS(tp)
{
setvbuf(stdout, NULL, _IONBF, 0);
@@ -5837,6 +5969,8 @@ ATF_TP_ADD_TCS(tp)
ATF_TP_ADD_TC(tp, lwp_exit1);
ATF_TP_ADD_TC(tp, signal1);
+ ATF_TP_ADD_TC(tp, signal2);
+ ATF_TP_ADD_TC(tp, signal3);
return atf_no_error();
}
