[src/trunk]: src/tests/kernel Add new test siginfo5 in t_ptrace_wait{, 3, 4, 6, i...

[kamil <kamil%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/909247aa02ca
branches:  trunk
changeset: 820435:909247aa02ca
user:      kamil <kamil%NetBSD.org@localhost>
date:      Tue Jan 10 00:54:22 2017 +0000

description:
Add new test siginfo5 in t_ptrace_wait{,3,4,6,id,pid}

siginfo5:
    Verify that fork(2) is intercepted by ptrace(2) with EVENT_MASK
    set to PTRACE_FORK and reports correct signal information

Sponsored by <The NetBSD Foundation>

diffstat:

 tests/kernel/t_ptrace_wait.c |  160 ++++++++++++++++++++++++++++++++++++++++++-
 1 files changed, 158 insertions(+), 2 deletions(-)

diffs (188 lines):

diff -r adbdc91bb4c7 -r 909247aa02ca tests/kernel/t_ptrace_wait.c
--- a/tests/kernel/t_ptrace_wait.c      Tue Jan 10 00:51:56 2017 +0000
+++ b/tests/kernel/t_ptrace_wait.c      Tue Jan 10 00:54:22 2017 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: t_ptrace_wait.c,v 1.51 2017/01/09 22:09:20 kamil Exp $ */
+/*     $NetBSD: t_ptrace_wait.c,v 1.52 2017/01/10 00:54:22 kamil Exp $ */
 
 /*-
  * Copyright (c) 2016 The NetBSD Foundation, Inc.
@@ -27,7 +27,7 @@
  */
 
 #include <sys/cdefs.h>
-__RCSID("$NetBSD: t_ptrace_wait.c,v 1.51 2017/01/09 22:09:20 kamil Exp $");
+__RCSID("$NetBSD: t_ptrace_wait.c,v 1.52 2017/01/10 00:54:22 kamil Exp $");
 
 #include <sys/param.h>
 #include <sys/types.h>
@@ -4753,6 +4753,161 @@
        TWAIT_REQUIRE_FAILURE(ECHILD, wpid = TWAIT_GENERIC(child, &status, 0));
 }
 
+#if defined(TWAIT_HAVE_PID)
+ATF_TC(siginfo5);
+ATF_TC_HEAD(siginfo5, tc)
+{
+       atf_tc_set_md_var(tc, "descr",
+           "Verify that fork(2) is intercepted by ptrace(2) with EVENT_MASK "
+           "set to PTRACE_FORK and reports correct signal information");
+}
+
+ATF_TC_BODY(siginfo5, tc)
+{
+       const int exitval = 5;
+       const int exitval2 = 15;
+       const int sigval = SIGSTOP;
+       pid_t child, child2, wpid;
+#if defined(TWAIT_HAVE_STATUS)
+       int status;
+#endif
+       ptrace_state_t state;
+       const int slen = sizeof(state);
+       ptrace_event_t event;
+       const int elen = sizeof(event);
+       struct ptrace_siginfo info;
+
+       memset(&info, 0, sizeof(info));
+
+       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);
+
+               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("Before calling ptrace(2) with PT_GET_SIGINFO for child\n");
+       ATF_REQUIRE(ptrace(PT_GET_SIGINFO, child, &info, sizeof(info)) != -1);
+
+       printf("Before checking siginfo_t\n");
+       ATF_REQUIRE_EQ(info.psi_siginfo.si_signo, sigval);
+       ATF_REQUIRE_EQ(info.psi_siginfo.si_code, SI_LWP);
+
+       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 %d\n", TWAIT_FNAME, child);
+       TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child);
+
+       validate_status_stopped(status, SIGTRAP);
+
+       printf("Before calling ptrace(2) with PT_GET_SIGINFO for child\n");
+       ATF_REQUIRE(ptrace(PT_GET_SIGINFO, child, &info, sizeof(info)) != -1);
+
+       printf("Before checking siginfo_t\n");
+       ATF_REQUIRE_EQ(info.psi_siginfo.si_signo, SIGTRAP);
+       ATF_REQUIRE_EQ(info.psi_siginfo.si_code, TRAP_CHLD);
+
+       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 forkee %d of the child %d\n",
+           TWAIT_FNAME, child2, child);
+       TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child2, &status, 0),
+           child2);
+
+       validate_status_stopped(status, SIGTRAP);
+
+       printf("Before calling ptrace(2) with PT_GET_SIGINFO for child\n");
+       ATF_REQUIRE(ptrace(PT_GET_SIGINFO, child, &info, sizeof(info)) != -1);
+
+       printf("Before checking siginfo_t\n");
+       ATF_REQUIRE_EQ(info.psi_siginfo.si_signo, SIGTRAP);
+       ATF_REQUIRE_EQ(info.psi_siginfo.si_code, TRAP_CHLD);
+
+       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 calling ptrace(2) with PT_GET_SIGINFO for child\n");
+       ATF_REQUIRE(ptrace(PT_GET_SIGINFO, child, &info, sizeof(info)) != -1);
+
+       printf("Before checking siginfo_t\n");
+       ATF_REQUIRE_EQ(info.psi_siginfo.si_signo, SIGCHLD);
+       ATF_REQUIRE_EQ(info.psi_siginfo.si_code, CLD_EXITED);
+
+       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);
@@ -4839,6 +4994,7 @@
        ATF_TP_ADD_TC(tp, siginfo2);
        ATF_TP_ADD_TC(tp, siginfo3);
        ATF_TP_ADD_TC(tp, siginfo4);
+       ATF_TP_ADD_TC_HAVE_PID(tp, siginfo5);
 
        return atf_no_error();
 }