Add vfork1 test in t_ptrace_wait* and vfork2 in t_ptrace_wait{4,6,id,pid}
These tests are exact clones for fork1 and fork2, however testing vfork(2).
vfork1:
Verify that vfork(2) is intercepted by ptrace(2) with EVENT_MASK set to
PTRACE_VFORK.
vfork2:
Verify that vfork(2) is not intercepted by ptrace(2) with empty
EVENT_MASK.
vfork1 is supposed to test currently unimplemented PTRACE_VFORK option in
EVENT_MASK, marked as failure and linked with PR kern/51630.
Sponsored by <The NetBSD Foundation>
This commit is contained in:
kamil
parent
700032562a
commit
7fa7b9b171
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@ -1,4 +1,4 @@
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/* $NetBSD: t_ptrace_wait.c,v 1.17 2016/11/15 20:59:11 kamil Exp $ */
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/* $NetBSD: t_ptrace_wait.c,v 1.18 2016/11/15 21:50:38 kamil Exp $ */
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/*-
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* Copyright (c) 2016 The NetBSD Foundation, Inc.
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@ -27,7 +27,7 @@
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*/
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#include <sys/cdefs.h>
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__RCSID("$NetBSD: t_ptrace_wait.c,v 1.17 2016/11/15 20:59:11 kamil Exp $");
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__RCSID("$NetBSD: t_ptrace_wait.c,v 1.18 2016/11/15 21:50:38 kamil Exp $");
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#include <sys/param.h>
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#include <sys/types.h>
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@ -1799,6 +1799,216 @@ ATF_TC_BODY(fork2, tc)
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TWAIT_REQUIRE_FAILURE(ECHILD, wpid = TWAIT_GENERIC(child, &status, 0));
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}
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#if defined(TWAIT_HAVE_PID)
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ATF_TC(vfork1);
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ATF_TC_HEAD(vfork1, tc)
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{
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atf_tc_set_md_var(tc, "descr",
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"Verify that vfork(2) is intercepted by ptrace(2) with EVENT_MASK "
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"set to PTRACE_VFORK");
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}
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ATF_TC_BODY(vfork1, tc)
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{
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const int exitval = 5;
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const int exitval2 = 15;
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const int sigval = SIGSTOP;
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pid_t child, child2, wpid;
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#if defined(TWAIT_HAVE_STATUS)
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int status;
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#endif
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ptrace_state_t state;
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const int slen = sizeof(state);
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ptrace_event_t event;
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const int elen = sizeof(event);
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/*
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* ptrace(2) command PT_SET_EVENT_MASK: option PTRACE_VFORK unsupported
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*/
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#ifndef PTRACE_VFORK
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#define PTRACE_VFORK 0
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#endif
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atf_tc_expect_fail("PR kern/51630");
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printf("Before forking process PID=%d\n", getpid());
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child = atf_utils_fork();
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if (child == 0) {
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printf("Before calling PT_TRACE_ME from child %d\n", getpid());
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FORKEE_ASSERT(ptrace(PT_TRACE_ME, 0, NULL, 0) != -1);
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printf("Before raising %s from child\n", strsignal(sigval));
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FORKEE_ASSERT(raise(sigval) == 0);
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FORKEE_ASSERT((child2 = vfork()) != 1);
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if (child2 == 0)
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_exit(exitval2);
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FORKEE_REQUIRE_SUCCESS
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(wpid = TWAIT_GENERIC(child2, &status, 0), child2);
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forkee_status_exited(status, exitval2);
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printf("Before exiting of the child process\n");
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_exit(exitval);
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}
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printf("Parent process PID=%d, child's PID=%d\n", getpid(), child);
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printf("Before calling %s() for the child\n", TWAIT_FNAME);
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TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child);
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validate_status_stopped(status, sigval);
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printf("Enable PTRACE_VFORK in EVENT_MASK for the child %d\n", child);
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event.pe_set_event = PTRACE_VFORK;
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ATF_REQUIRE(ptrace(PT_SET_EVENT_MASK, child, &event, elen) != -1);
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printf("Before resuming the child process where it left off and "
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"without signal to be sent\n");
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ATF_REQUIRE(ptrace(PT_CONTINUE, child, (void *)1, 0) != -1);
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printf("Before calling %s() for the child %d\n", TWAIT_FNAME, child);
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TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child);
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validate_status_stopped(status, SIGTRAP);
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ATF_REQUIRE(ptrace(PT_GET_PROCESS_STATE, child, &state, slen) != -1);
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ATF_REQUIRE_EQ(state.pe_report_event, PTRACE_VFORK);
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child2 = state.pe_other_pid;
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printf("Reported PTRACE_VFORK event with forkee %d\n", child2);
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printf("Before calling %s() for the forkee %d of the child %d\n",
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TWAIT_FNAME, child2, child);
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TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child2, &status, 0),
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child2);
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validate_status_stopped(status, SIGTRAP);
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ATF_REQUIRE(ptrace(PT_GET_PROCESS_STATE, child2, &state, slen) != -1);
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ATF_REQUIRE_EQ(state.pe_report_event, PTRACE_VFORK);
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ATF_REQUIRE_EQ(state.pe_other_pid, child);
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printf("Before resuming the forkee process where it left off and "
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"without signal to be sent\n");
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ATF_REQUIRE(ptrace(PT_CONTINUE, child2, (void *)1, 0) != -1);
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printf("Before resuming the child process where it left off and "
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"without signal to be sent\n");
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ATF_REQUIRE(ptrace(PT_CONTINUE, child, (void *)1, 0) != -1);
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printf("Before calling %s() for the forkee - expected exited\n",
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TWAIT_FNAME);
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TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child2, &status, 0),
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child2);
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validate_status_exited(status, exitval2);
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printf("Before calling %s() for the forkee - expected no process\n",
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TWAIT_FNAME);
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TWAIT_REQUIRE_FAILURE(ECHILD,
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wpid = TWAIT_GENERIC(child2, &status, 0));
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printf("Before calling %s() for the child - expected stopped "
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"SIGCHLD\n", TWAIT_FNAME);
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TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child);
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validate_status_stopped(status, SIGCHLD);
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printf("Before resuming the child process where it left off and "
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"without signal to be sent\n");
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ATF_REQUIRE(ptrace(PT_CONTINUE, child, (void *)1, 0) != -1);
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printf("Before calling %s() for the child - expected exited\n",
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TWAIT_FNAME);
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TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child);
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validate_status_exited(status, exitval);
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printf("Before calling %s() for the child - expected no process\n",
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TWAIT_FNAME);
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TWAIT_REQUIRE_FAILURE(ECHILD, wpid = TWAIT_GENERIC(child, &status, 0));
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}
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#endif
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ATF_TC(vfork2);
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ATF_TC_HEAD(vfork2, tc)
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{
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atf_tc_set_md_var(tc, "descr",
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"Verify that vfork(2) is not intercepted by ptrace(2) with empty "
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"EVENT_MASK");
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}
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ATF_TC_BODY(vfork2, tc)
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{
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const int exitval = 5;
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const int exitval2 = 15;
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const int sigval = SIGSTOP;
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pid_t child, child2, wpid;
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#if defined(TWAIT_HAVE_STATUS)
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int status;
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#endif
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ptrace_event_t event;
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const int elen = sizeof(event);
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printf("Before forking process PID=%d\n", getpid());
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child = atf_utils_fork();
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if (child == 0) {
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printf("Before calling PT_TRACE_ME from child %d\n", getpid());
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FORKEE_ASSERT(ptrace(PT_TRACE_ME, 0, NULL, 0) != -1);
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printf("Before raising %s from child\n", strsignal(sigval));
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FORKEE_ASSERT(raise(sigval) == 0);
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FORKEE_ASSERT((child2 = vfork()) != 1);
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if (child2 == 0)
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_exit(exitval2);
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FORKEE_REQUIRE_SUCCESS
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(wpid = TWAIT_GENERIC(child2, &status, 0), child2);
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forkee_status_exited(status, exitval2);
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printf("Before exiting of the child process\n");
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_exit(exitval);
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}
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printf("Parent process PID=%d, child's PID=%d\n", getpid(), child);
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printf("Before calling %s() for the child\n", TWAIT_FNAME);
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TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child);
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validate_status_stopped(status, sigval);
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printf("Set empty EVENT_MASK for the child %d\n", child);
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event.pe_set_event = 0;
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ATF_REQUIRE(ptrace(PT_SET_EVENT_MASK, child, &event, elen) != -1);
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printf("Before resuming the child process where it left off and "
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"without signal to be sent\n");
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ATF_REQUIRE(ptrace(PT_CONTINUE, child, (void *)1, 0) != -1);
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printf("Before calling %s() for the child - expected stopped "
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"SIGCHLD\n", TWAIT_FNAME);
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TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child);
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validate_status_stopped(status, SIGCHLD);
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printf("Before resuming the child process where it left off and "
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"without signal to be sent\n");
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ATF_REQUIRE(ptrace(PT_CONTINUE, child, (void *)1, 0) != -1);
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printf("Before calling %s() for the child - expected exited\n",
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TWAIT_FNAME);
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TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child);
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validate_status_exited(status, exitval);
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printf("Before calling %s() for the child - expected no process\n",
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TWAIT_FNAME);
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TWAIT_REQUIRE_FAILURE(ECHILD, wpid = TWAIT_GENERIC(child, &status, 0));
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}
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#if defined(TWAIT_HAVE_PID)
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#define ATF_TP_ADD_TC_HAVE_PID(a,b) ATF_TP_ADD_TC(a,b)
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#else
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@ -1828,5 +2038,8 @@ ATF_TP_ADD_TCS(tp)
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ATF_TP_ADD_TC_HAVE_PID(tp, fork1);
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ATF_TP_ADD_TC(tp, fork2);
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ATF_TP_ADD_TC_HAVE_PID(tp, vfork1);
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ATF_TP_ADD_TC(tp, vfork2);
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return atf_no_error();
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}
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