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

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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>
This commit is contained in:
kamil 2017-01-10 00:54:22 +00:00
parent 189ca4b8c7
commit d7bca94546
1 changed files with 158 additions and 2 deletions
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160
tests/kernel/t_ptrace_wait.c
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@ -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 @@ ATF_TC_BODY(siginfo4, tc)
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_TCS(tp)
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();
}