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Add new tests vforkdone[12] in t_ptrace_wait{,3,4,6,id,pid}

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vforkdone1:
    Verify that vfork(2) is intercepted by ptrace(2) with EVENT_MASK
    set to PTRACE_VFORK_DONE

vforkdone2:
    Verify that vfork(2) is intercepted by ptrace(2) with EVENT_MASK
    set to PTRACE_FORK | PTRACE_VFORK_DONE

As of now PTRACE_VFORK_DONE is undefined in <sys/ptrace.h>.

Sponsored by <The NetBSD Foundation>
This commit is contained in:
kamil 2017-01-12 21:35:53 +00:00
parent 78df756bd3
commit 314c5d1975
1 changed files with 202 additions and 2 deletions
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204
tests/kernel/t_ptrace_wait.c
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@ -1,4 +1,4 @@
/* $NetBSD: t_ptrace_wait.c,v 1.53 2017/01/10 05:08:24 kamil Exp $ */
/* $NetBSD: t_ptrace_wait.c,v 1.54 2017/01/12 21:35:53 kamil Exp $ */
/*-
* Copyright (c) 2016 The NetBSD Foundation, Inc.
@ -27,7 +27,7 @@
*/
#include <sys/cdefs.h>
__RCSID("$NetBSD: t_ptrace_wait.c,v 1.53 2017/01/10 05:08:24 kamil Exp $");
__RCSID("$NetBSD: t_ptrace_wait.c,v 1.54 2017/01/12 21:35:53 kamil Exp $");
#include <sys/param.h>
#include <sys/types.h>
@ -1301,6 +1301,13 @@ ATF_TC_BODY(vfork1, tc)
*/
#ifndef PTRACE_VFORK
#define PTRACE_VFORK 0
#endif
/*
* ptrace(2) command PT_SET_EVENT_MASK: option PTRACE_VFORK_DONE
* unsupported
*/
#ifndef PTRACE_VFORK_DONE
#define PTRACE_VFORK_DONE 0
#endif
atf_tc_expect_fail("PR kern/51630");
@ -1483,6 +1490,196 @@ ATF_TC_BODY(vfork2, tc)
TWAIT_REQUIRE_FAILURE(ECHILD, wpid = TWAIT_GENERIC(child, &status, 0));
}
ATF_TC(vforkdone1);
ATF_TC_HEAD(vforkdone1, tc)
{
atf_tc_set_md_var(tc, "descr",
"Verify that vfork(2) is intercepted by ptrace(2) with EVENT_MASK "
"set to PTRACE_VFORK_DONE");
}
ATF_TC_BODY(vforkdone1, 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);
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 = vfork()) != 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_DONE;
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);
ATF_REQUIRE(ptrace(PT_GET_PROCESS_STATE, child, &state, slen) != -1);
ATF_REQUIRE_EQ(state.pe_report_event, PTRACE_VFORK_DONE);
child2 = state.pe_other_pid;
printf("Reported PTRACE_VFORK_DONE event with forkee %d\n", child2);
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 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));
}
ATF_TC(vforkdone2);
ATF_TC_HEAD(vforkdone2, tc)
{
atf_tc_set_md_var(tc, "descr",
"Verify that vfork(2) is intercepted by ptrace(2) with EVENT_MASK "
"set to PTRACE_FORK | PTRACE_VFORK_DONE");
}
ATF_TC_BODY(vforkdone2, 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);
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 = vfork()) != 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_FORK | PTRACE_VFORK_DONE;
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);
ATF_REQUIRE(ptrace(PT_GET_PROCESS_STATE, child, &state, slen) != -1);
ATF_REQUIRE_EQ(state.pe_report_event, PTRACE_VFORK_DONE);
child2 = state.pe_other_pid;
printf("Reported PTRACE_VFORK_DONE event with forkee %d\n", child2);
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 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));
}
ATF_TC(io_read_d1);
ATF_TC_HEAD(io_read_d1, tc)
{
@ -5015,6 +5212,9 @@ ATF_TP_ADD_TCS(tp)
ATF_TP_ADD_TC_HAVE_PID(tp, vfork1);
ATF_TP_ADD_TC(tp, vfork2);
ATF_TP_ADD_TC(tp, vforkdone1);
ATF_TP_ADD_TC(tp, vforkdone2);
ATF_TP_ADD_TC(tp, io_read_d1);
ATF_TP_ADD_TC(tp, io_read_d2);
ATF_TP_ADD_TC(tp, io_read_d3);