/* $NetBSD: t_ptrace_lwp_wait.h,v 1.1 2020/05/05 00:15:45 kamil Exp $ */
/*-
* Copyright (c) 2016, 2017, 2018, 2019, 2020 The NetBSD Foundation, Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
static int lwpinfo_thread_sigmask[] = {SIGXCPU, SIGPIPE, SIGALRM, SIGURG};
static pthread_mutex_t lwpinfo_thread_mtx = PTHREAD_MUTEX_INITIALIZER;
static pthread_cond_t lwpinfo_thread_cnd = PTHREAD_COND_INITIALIZER;
static volatile size_t lwpinfo_thread_done;
static void *
lwpinfo_thread(void *arg)
{
sigset_t s;
volatile void **tcb;
tcb = (volatile void **)arg;
*tcb = _lwp_getprivate();
DPRINTF("Storing tcb[] = %p from thread %d\n", *tcb, _lwp_self());
pthread_setname_np(pthread_self(), "thread %d",
(void *)(intptr_t)_lwp_self());
sigemptyset(&s);
pthread_mutex_lock(&lwpinfo_thread_mtx);
sigaddset(&s, lwpinfo_thread_sigmask[lwpinfo_thread_done]);
lwpinfo_thread_done++;
pthread_sigmask(SIG_BLOCK, &s, NULL);
pthread_cond_signal(&lwpinfo_thread_cnd);
pthread_mutex_unlock(&lwpinfo_thread_mtx);
return infinite_thread(NULL);
}
static void
traceme_lwpinfo(const size_t threads, const char *iter)
{
const int sigval = SIGSTOP;
const int sigval2 = SIGINT;
pid_t child, wpid;
#if defined(TWAIT_HAVE_STATUS)
int status;
#endif
struct ptrace_lwpinfo lwp = {0, 0};
struct ptrace_lwpstatus lwpstatus = {0};
struct ptrace_siginfo info;
void *private;
char *name;
char namebuf[PL_LNAMELEN];
volatile void *tcb[4];
bool found;
sigset_t s;
/* Maximum number of supported threads in this test */
pthread_t t[__arraycount(tcb) - 1];
size_t n, m;
int rv;
size_t bytes_read;
struct ptrace_io_desc io;
sigset_t sigmask;
ATF_REQUIRE(__arraycount(t) >= threads);
memset(tcb, 0, sizeof(tcb));
DPRINTF("Before forking process PID=%d\n", getpid());
SYSCALL_REQUIRE((child = fork()) != -1);
if (child == 0) {
DPRINTF("Before calling PT_TRACE_ME from child %d\n", getpid());
FORKEE_ASSERT(ptrace(PT_TRACE_ME, 0, NULL, 0) != -1);
tcb[0] = _lwp_getprivate();
DPRINTF("Storing tcb[0] = %p\n", tcb[0]);
pthread_setname_np(pthread_self(), "thread %d",
(void *)(intptr_t)_lwp_self());
sigemptyset(&s);
sigaddset(&s, lwpinfo_thread_sigmask[lwpinfo_thread_done]);
pthread_sigmask(SIG_BLOCK, &s, NULL);
DPRINTF("Before raising %s from child\n", strsignal(sigval));
FORKEE_ASSERT(raise(sigval) == 0);
for (n = 0; n < threads; n++) {
rv = pthread_create(&t[n], NULL, lwpinfo_thread,
&tcb[n + 1]);
FORKEE_ASSERT(rv == 0);
}
pthread_mutex_lock(&lwpinfo_thread_mtx);
while (lwpinfo_thread_done < threads) {
pthread_cond_wait(&lwpinfo_thread_cnd,
&lwpinfo_thread_mtx);
}
pthread_mutex_unlock(&lwpinfo_thread_mtx);
DPRINTF("Before raising %s from child\n", strsignal(sigval2));
FORKEE_ASSERT(raise(sigval2) == 0);
/* NOTREACHED */
FORKEE_ASSERTX(0 && "Not reached");
}
DPRINTF("Parent process PID=%d, child's PID=%d\n", getpid(), child);
DPRINTF("Before calling %s() for the child\n", TWAIT_FNAME);
TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child);
validate_status_stopped(status, sigval);
DPRINTF("Before calling ptrace(2) with PT_GET_SIGINFO for child");
SYSCALL_REQUIRE(
ptrace(PT_GET_SIGINFO, child, &info, sizeof(info)) != -1);
DPRINTF("Signal traced to lwpid=%d\n", info.psi_lwpid);
DPRINTF("Signal properties: si_signo=%#x si_code=%#x si_errno=%#x\n",
info.psi_siginfo.si_signo, info.psi_siginfo.si_code,
info.psi_siginfo.si_errno);
ATF_REQUIRE_EQ(info.psi_siginfo.si_signo, sigval);
ATF_REQUIRE_EQ(info.psi_siginfo.si_code, SI_LWP);
if (strstr(iter, "LWPINFO") != NULL) {
DPRINTF("Before calling ptrace(2) with PT_LWPINFO for child\n");
SYSCALL_REQUIRE(ptrace(PT_LWPINFO, child, &lwp, sizeof(lwp))
!= -1);
DPRINTF("Assert that there exists a single thread only\n");
ATF_REQUIRE(lwp.pl_lwpid > 0);
DPRINTF("Assert that lwp thread %d received event "
"PL_EVENT_SIGNAL\n", lwp.pl_lwpid);
FORKEE_ASSERT_EQ(lwp.pl_event, PL_EVENT_SIGNAL);
if (strstr(iter, "LWPSTATUS") != NULL) {
DPRINTF("Before calling ptrace(2) with PT_LWPSTATUS "
"for child\n");
lwpstatus.pl_lwpid = lwp.pl_lwpid;
SYSCALL_REQUIRE(ptrace(PT_LWPSTATUS, child, &lwpstatus,
sizeof(lwpstatus)) != -1);
}
DPRINTF("Before calling ptrace(2) with PT_LWPINFO for child\n");
SYSCALL_REQUIRE(ptrace(PT_LWPINFO, child, &lwp, sizeof(lwp))
!= -1);
DPRINTF("Assert that there exists a single thread only\n");
ATF_REQUIRE_EQ(lwp.pl_lwpid, 0);
} else {
DPRINTF("Before calling ptrace(2) with PT_LWPNEXT for child\n");
SYSCALL_REQUIRE(ptrace(PT_LWPNEXT, child, &lwpstatus,
sizeof(lwpstatus)) != -1);
DPRINTF("Assert that there exists a single thread only %d\n", lwpstatus.pl_lwpid);
ATF_REQUIRE(lwpstatus.pl_lwpid > 0);
DPRINTF("Before calling ptrace(2) with PT_LWPNEXT for child\n");
SYSCALL_REQUIRE(ptrace(PT_LWPNEXT, child, &lwpstatus,
sizeof(lwpstatus)) != -1);
DPRINTF("Assert that there exists a single thread only\n");
ATF_REQUIRE_EQ(lwpstatus.pl_lwpid, 0);
}
DPRINTF("Before resuming the child process where it left off and "
"without signal to be sent\n");
SYSCALL_REQUIRE(ptrace(PT_CONTINUE, child, (void *)1, 0) != -1);
DPRINTF("Before calling %s() for the child\n", TWAIT_FNAME);
TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child);
validate_status_stopped(status, sigval2);
DPRINTF("Before calling ptrace(2) with PT_GET_SIGINFO for child");
SYSCALL_REQUIRE(
ptrace(PT_GET_SIGINFO, child, &info, sizeof(info)) != -1);
DPRINTF("Signal traced to lwpid=%d\n", info.psi_lwpid);
DPRINTF("Signal properties: si_signo=%#x si_code=%#x si_errno=%#x\n",
info.psi_siginfo.si_signo, info.psi_siginfo.si_code,
info.psi_siginfo.si_errno);
ATF_REQUIRE_EQ(info.psi_siginfo.si_signo, sigval2);
ATF_REQUIRE_EQ(info.psi_siginfo.si_code, SI_LWP);
memset(&lwp, 0, sizeof(lwp));
memset(&lwpstatus, 0, sizeof(lwpstatus));
memset(&io, 0, sizeof(io));
bytes_read = 0;
io.piod_op = PIOD_READ_D;
io.piod_len = sizeof(tcb);
do {
io.piod_addr = (char *)&tcb + bytes_read;
io.piod_offs = io.piod_addr;
rv = ptrace(PT_IO, child, &io, sizeof(io));
ATF_REQUIRE(rv != -1 && io.piod_len != 0);
bytes_read += io.piod_len;
io.piod_len = sizeof(tcb) - bytes_read;
} while (bytes_read < sizeof(tcb));
for (n = 0; n <= threads; n++) {
if (strstr(iter, "LWPINFO") != NULL) {
DPRINTF("Before calling ptrace(2) with PT_LWPINFO for "
"child\n");
SYSCALL_REQUIRE(
ptrace(PT_LWPINFO, child, &lwp, sizeof(lwp)) != -1);
DPRINTF("LWP=%d\n", lwp.pl_lwpid);
DPRINTF("Assert that the thread exists\n");
ATF_REQUIRE(lwp.pl_lwpid > 0);
DPRINTF("Assert that lwp thread %d received expected "
"event\n", lwp.pl_lwpid);
FORKEE_ASSERT_EQ(lwp.pl_event,
info.psi_lwpid == lwp.pl_lwpid ?
PL_EVENT_SIGNAL : PL_EVENT_NONE);
if (strstr(iter, "LWPSTATUS") != NULL) {
DPRINTF("Before calling ptrace(2) with "
"PT_LWPSTATUS for child\n");
lwpstatus.pl_lwpid = lwp.pl_lwpid;
SYSCALL_REQUIRE(ptrace(PT_LWPSTATUS, child,
&lwpstatus, sizeof(lwpstatus)) != -1);
goto check_lwpstatus;
}
} else {
DPRINTF("Before calling ptrace(2) with PT_LWPNEXT for "
"child\n");
SYSCALL_REQUIRE(
ptrace(PT_LWPNEXT, child, &lwpstatus,
sizeof(lwpstatus)) != -1);
DPRINTF("LWP=%d\n", lwpstatus.pl_lwpid);
DPRINTF("Assert that the thread exists\n");
ATF_REQUIRE(lwpstatus.pl_lwpid > 0);
check_lwpstatus:
if (strstr(iter, "pl_sigmask") != NULL) {
sigmask = lwpstatus.pl_sigmask;
DPRINTF("Retrieved sigmask: "
"%02x%02x%02x%02x\n",
sigmask.__bits[0], sigmask.__bits[1],
sigmask.__bits[2], sigmask.__bits[3]);
found = false;
for (m = 0;
m < __arraycount(lwpinfo_thread_sigmask);
m++) {
if (sigismember(&sigmask,
lwpinfo_thread_sigmask[m])) {
found = true;
lwpinfo_thread_sigmask[m] = 0;
break;
}
}
ATF_REQUIRE(found == true);
} else if (strstr(iter, "pl_name") != NULL) {
name = lwpstatus.pl_name;
DPRINTF("Retrieved thread name: "
"%s\n", name);
snprintf(namebuf, sizeof namebuf, "thread %d",
lwpstatus.pl_lwpid);
ATF_REQUIRE(strcmp(name, namebuf) == 0);
} else if (strstr(iter, "pl_private") != NULL) {
private = lwpstatus.pl_private;
DPRINTF("Retrieved thread private pointer: "
"%p\n", private);
found = false;
for (m = 0; m < __arraycount(tcb); m++) {
DPRINTF("Comparing %p and %p\n",
private, tcb[m]);
if (private == tcb[m]) {
found = true;
break;
}
}
ATF_REQUIRE(found == true);
}
}
}
if (strstr(iter, "LWPINFO") != NULL) {
DPRINTF("Before calling ptrace(2) with PT_LWPINFO for "
"child\n");
SYSCALL_REQUIRE(ptrace(PT_LWPINFO, child, &lwp, sizeof(lwp))
!= -1);
DPRINTF("LWP=%d\n", lwp.pl_lwpid);
DPRINTF("Assert that there are no more threads\n");
ATF_REQUIRE_EQ(lwp.pl_lwpid, 0);
} else {
DPRINTF("Before calling ptrace(2) with PT_LWPNEXT for child\n");
SYSCALL_REQUIRE(ptrace(PT_LWPNEXT, child, &lwpstatus,
sizeof(lwpstatus)) != -1);
DPRINTF("Assert that there exists a single thread only\n");
ATF_REQUIRE_EQ(lwpstatus.pl_lwpid, 0);
}
DPRINTF("Before resuming the child process where it left off and "
"without signal to be sent\n");
SYSCALL_REQUIRE(ptrace(PT_CONTINUE, child, (void *)1, SIGKILL) != -1);
DPRINTF("Before calling %s() for the child\n", TWAIT_FNAME);
TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child);
validate_status_signaled(status, SIGKILL, 0);
DPRINTF("Before calling %s() for the child\n", TWAIT_FNAME);
TWAIT_REQUIRE_FAILURE(ECHILD, wpid = TWAIT_GENERIC(child, &status, 0));
}
#define TRACEME_LWPINFO(test, threads, iter) \
ATF_TC(test); \
ATF_TC_HEAD(test, tc) \
{ \
atf_tc_set_md_var(tc, "descr", \
"Verify " iter " with the child with " #threads \
" spawned extra threads"); \
} \
\
ATF_TC_BODY(test, tc) \
{ \
\
traceme_lwpinfo(threads, iter); \
}
TRACEME_LWPINFO(traceme_lwpinfo0, 0, "LWPINFO")
TRACEME_LWPINFO(traceme_lwpinfo1, 1, "LWPINFO")
TRACEME_LWPINFO(traceme_lwpinfo2, 2, "LWPINFO")
TRACEME_LWPINFO(traceme_lwpinfo3, 3, "LWPINFO")
TRACEME_LWPINFO(traceme_lwpinfo0_lwpstatus, 0, "LWPINFO+LWPSTATUS")
TRACEME_LWPINFO(traceme_lwpinfo1_lwpstatus, 1, "LWPINFO+LWPSTATUS")
TRACEME_LWPINFO(traceme_lwpinfo2_lwpstatus, 2, "LWPINFO+LWPSTATUS")
TRACEME_LWPINFO(traceme_lwpinfo3_lwpstatus, 3, "LWPINFO+LWPSTATUS")
TRACEME_LWPINFO(traceme_lwpinfo0_lwpstatus_pl_sigmask, 0,
"LWPINFO+LWPSTATUS+pl_sigmask")
TRACEME_LWPINFO(traceme_lwpinfo1_lwpstatus_pl_sigmask, 1,
"LWPINFO+LWPSTATUS+pl_sigmask")
TRACEME_LWPINFO(traceme_lwpinfo2_lwpstatus_pl_sigmask, 2,
"LWPINFO+LWPSTATUS+pl_sigmask")
TRACEME_LWPINFO(traceme_lwpinfo3_lwpstatus_pl_sigmask, 3,
"LWPINFO+LWPSTATUS+pl_sigmask")
TRACEME_LWPINFO(traceme_lwpinfo0_lwpstatus_pl_name, 0,
"LWPINFO+LWPSTATUS+pl_name")
TRACEME_LWPINFO(traceme_lwpinfo1_lwpstatus_pl_name, 1,
"LWPINFO+LWPSTATUS+pl_name")
TRACEME_LWPINFO(traceme_lwpinfo2_lwpstatus_pl_name, 2,
"LWPINFO+LWPSTATUS+pl_name")
TRACEME_LWPINFO(traceme_lwpinfo3_lwpstatus_pl_name, 3,
"LWPINFO+LWPSTATUS+pl_name")
TRACEME_LWPINFO(traceme_lwpinfo0_lwpstatus_pl_private, 0,
"LWPINFO+LWPSTATUS+pl_private")
TRACEME_LWPINFO(traceme_lwpinfo1_lwpstatus_pl_private, 1,
"LWPINFO+LWPSTATUS+pl_private")
TRACEME_LWPINFO(traceme_lwpinfo2_lwpstatus_pl_private, 2,
"LWPINFO+LWPSTATUS+pl_private")
TRACEME_LWPINFO(traceme_lwpinfo3_lwpstatus_pl_private, 3,
"LWPINFO+LWPSTATUS+pl_private")
TRACEME_LWPINFO(traceme_lwpnext0, 0, "LWPNEXT")
TRACEME_LWPINFO(traceme_lwpnext1, 1, "LWPNEXT")
TRACEME_LWPINFO(traceme_lwpnext2, 2, "LWPNEXT")
TRACEME_LWPINFO(traceme_lwpnext3, 3, "LWPNEXT")
TRACEME_LWPINFO(traceme_lwpnext0_pl_sigmask, 0, "LWPNEXT+pl_sigmask")
TRACEME_LWPINFO(traceme_lwpnext1_pl_sigmask, 1, "LWPNEXT+pl_sigmask")
TRACEME_LWPINFO(traceme_lwpnext2_pl_sigmask, 2, "LWPNEXT+pl_sigmask")
TRACEME_LWPINFO(traceme_lwpnext3_pl_sigmask, 3, "LWPNEXT+pl_sigmask")
TRACEME_LWPINFO(traceme_lwpnext0_pl_name, 0, "LWPNEXT+pl_name")
TRACEME_LWPINFO(traceme_lwpnext1_pl_name, 1, "LWPNEXT+pl_name")
TRACEME_LWPINFO(traceme_lwpnext2_pl_name, 2, "LWPNEXT+pl_name")
TRACEME_LWPINFO(traceme_lwpnext3_pl_name, 3, "LWPNEXT+pl_name")
TRACEME_LWPINFO(traceme_lwpnext0_pl_private, 0, "LWPNEXT+pl_private")
TRACEME_LWPINFO(traceme_lwpnext1_pl_private, 1, "LWPNEXT+pl_private")
TRACEME_LWPINFO(traceme_lwpnext2_pl_private, 2, "LWPNEXT+pl_private")
TRACEME_LWPINFO(traceme_lwpnext3_pl_private, 3, "LWPNEXT+pl_private")
/// ----------------------------------------------------------------------------
#if defined(TWAIT_HAVE_PID)
static void
attach_lwpinfo(const int threads)
{
const int sigval = SIGINT;
struct msg_fds parent_tracee, parent_tracer;
const int exitval_tracer = 10;
pid_t tracee, tracer, wpid;
uint8_t msg = 0xde; /* dummy message for IPC based on pipe(2) */
#if defined(TWAIT_HAVE_STATUS)
int status;
#endif
struct ptrace_lwpinfo lwp = {0, 0};
struct ptrace_siginfo info;
/* Maximum number of supported threads in this test */
pthread_t t[3];
int n, rv;
DPRINTF("Spawn tracee\n");
SYSCALL_REQUIRE(msg_open(&parent_tracee) == 0);
SYSCALL_REQUIRE(msg_open(&parent_tracer) == 0);
tracee = atf_utils_fork();
if (tracee == 0) {
/* Wait for message from the parent */
CHILD_TO_PARENT("tracee ready", parent_tracee, msg);
CHILD_FROM_PARENT("spawn threads", parent_tracee, msg);
for (n = 0; n < threads; n++) {
rv = pthread_create(&t[n], NULL, infinite_thread, NULL);
FORKEE_ASSERT(rv == 0);
}
CHILD_TO_PARENT("tracee exit", parent_tracee, msg);
DPRINTF("Before raising %s from child\n", strsignal(sigval));
FORKEE_ASSERT(raise(sigval) == 0);
/* NOTREACHED */
FORKEE_ASSERTX(0 && "Not reached");
}
PARENT_FROM_CHILD("tracee ready", parent_tracee, msg);
DPRINTF("Spawn debugger\n");
tracer = atf_utils_fork();
if (tracer == 0) {
/* No IPC to communicate with the child */
DPRINTF("Before calling PT_ATTACH from tracee %d\n", getpid());
FORKEE_ASSERT(ptrace(PT_ATTACH, tracee, NULL, 0) != -1);
/* Wait for tracee and assert that it was stopped w/ SIGSTOP */
FORKEE_REQUIRE_SUCCESS(
wpid = TWAIT_GENERIC(tracee, &status, 0), tracee);
forkee_status_stopped(status, SIGSTOP);
DPRINTF("Before calling ptrace(2) with PT_GET_SIGINFO for "
"tracee");
FORKEE_ASSERT(
ptrace(PT_GET_SIGINFO, tracee, &info, sizeof(info)) != -1);
DPRINTF("Signal traced to lwpid=%d\n", info.psi_lwpid);
DPRINTF("Signal properties: si_signo=%#x si_code=%#x "
"si_errno=%#x\n",
info.psi_siginfo.si_signo, info.psi_siginfo.si_code,
info.psi_siginfo.si_errno);
FORKEE_ASSERT_EQ(info.psi_siginfo.si_signo, SIGSTOP);
FORKEE_ASSERT_EQ(info.psi_siginfo.si_code, SI_USER);
DPRINTF("Before calling ptrace(2) with PT_LWPINFO for child\n");
FORKEE_ASSERT(ptrace(PT_LWPINFO, tracee, &lwp, sizeof(lwp))
!= -1);
DPRINTF("Assert that there exists a thread\n");
FORKEE_ASSERTX(lwp.pl_lwpid > 0);
DPRINTF("Assert that lwp thread %d received event "
"PL_EVENT_SIGNAL\n", lwp.pl_lwpid);
FORKEE_ASSERT_EQ(lwp.pl_event, PL_EVENT_SIGNAL);
DPRINTF("Before calling ptrace(2) with PT_LWPINFO for "
"tracee\n");
FORKEE_ASSERT(ptrace(PT_LWPINFO, tracee, &lwp, sizeof(lwp))
!= -1);
DPRINTF("Assert that there are no more lwp threads in "
"tracee\n");
FORKEE_ASSERT_EQ(lwp.pl_lwpid, 0);
/* Resume tracee with PT_CONTINUE */
FORKEE_ASSERT(ptrace(PT_CONTINUE, tracee, (void *)1, 0) != -1);
/* Inform parent that tracer has attached to tracee */
CHILD_TO_PARENT("tracer ready", parent_tracer, msg);
/* Wait for parent */
CHILD_FROM_PARENT("tracer wait", parent_tracer, msg);
/* Wait for tracee and assert that it raised a signal */
FORKEE_REQUIRE_SUCCESS(
wpid = TWAIT_GENERIC(tracee, &status, 0), tracee);
forkee_status_stopped(status, SIGINT);
DPRINTF("Before calling ptrace(2) with PT_GET_SIGINFO for "
"child");
FORKEE_ASSERT(
ptrace(PT_GET_SIGINFO, tracee, &info, sizeof(info)) != -1);
DPRINTF("Signal traced to lwpid=%d\n", info.psi_lwpid);
DPRINTF("Signal properties: si_signo=%#x si_code=%#x "
"si_errno=%#x\n",
info.psi_siginfo.si_signo, info.psi_siginfo.si_code,
info.psi_siginfo.si_errno);
FORKEE_ASSERT_EQ(info.psi_siginfo.si_signo, sigval);
FORKEE_ASSERT_EQ(info.psi_siginfo.si_code, SI_LWP);
memset(&lwp, 0, sizeof(lwp));
for (n = 0; n <= threads; n++) {
DPRINTF("Before calling ptrace(2) with PT_LWPINFO for "
"child\n");
FORKEE_ASSERT(ptrace(PT_LWPINFO, tracee, &lwp,
sizeof(lwp)) != -1);
DPRINTF("LWP=%d\n", lwp.pl_lwpid);
DPRINTF("Assert that the thread exists\n");
FORKEE_ASSERT(lwp.pl_lwpid > 0);
DPRINTF("Assert that lwp thread %d received expected "
"event\n", lwp.pl_lwpid);
FORKEE_ASSERT_EQ(lwp.pl_event,
info.psi_lwpid == lwp.pl_lwpid ?
PL_EVENT_SIGNAL : PL_EVENT_NONE);
}
DPRINTF("Before calling ptrace(2) with PT_LWPINFO for "
"tracee\n");
FORKEE_ASSERT(ptrace(PT_LWPINFO, tracee, &lwp, sizeof(lwp))
!= -1);
DPRINTF("LWP=%d\n", lwp.pl_lwpid);
DPRINTF("Assert that there are no more threads\n");
FORKEE_ASSERT_EQ(lwp.pl_lwpid, 0);
DPRINTF("Before resuming the child process where it left off "
"and without signal to be sent\n");
FORKEE_ASSERT(ptrace(PT_CONTINUE, tracee, (void *)1, SIGKILL)
!= -1);
/* Wait for tracee and assert that it exited */
FORKEE_REQUIRE_SUCCESS(
wpid = TWAIT_GENERIC(tracee, &status, 0), tracee);
forkee_status_signaled(status, SIGKILL, 0);
DPRINTF("Before exiting of the tracer process\n");
_exit(exitval_tracer);
}
DPRINTF("Wait for the tracer to attach to the tracee\n");
PARENT_FROM_CHILD("tracer ready", parent_tracer, msg);
DPRINTF("Resume the tracee and spawn threads\n");
PARENT_TO_CHILD("spawn threads", parent_tracee, msg);
DPRINTF("Resume the tracee and let it exit\n");
PARENT_FROM_CHILD("tracee exit", parent_tracee, msg);
DPRINTF("Resume the tracer and let it detect multiple threads\n");
PARENT_TO_CHILD("tracer wait", parent_tracer, msg);
DPRINTF("Wait for tracer to finish its job and exit - calling %s()\n",
TWAIT_FNAME);
TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(tracer, &status, 0),
tracer);
validate_status_exited(status, exitval_tracer);
DPRINTF("Wait for tracee to finish its job and exit - calling %s()\n",
TWAIT_FNAME);
TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(tracee, &status, WNOHANG),
tracee);
validate_status_signaled(status, SIGKILL, 0);
msg_close(&parent_tracer);
msg_close(&parent_tracee);
}
#define ATTACH_LWPINFO(test, threads) \
ATF_TC(test); \
ATF_TC_HEAD(test, tc) \
{ \
atf_tc_set_md_var(tc, "descr", \
"Verify LWPINFO with the child with " #threads \
" spawned extra threads (tracer is not the original " \
"parent)"); \
} \
\
ATF_TC_BODY(test, tc) \
{ \
\
attach_lwpinfo(threads); \
}
ATTACH_LWPINFO(attach_lwpinfo0, 0)
ATTACH_LWPINFO(attach_lwpinfo1, 1)
ATTACH_LWPINFO(attach_lwpinfo2, 2)
ATTACH_LWPINFO(attach_lwpinfo3, 3)
#endif
#define ATF_TP_ADD_TCS_PTRACE_WAIT_LWP() \
ATF_TP_ADD_TC(tp, traceme_lwpinfo0); \
ATF_TP_ADD_TC(tp, traceme_lwpinfo1); \
ATF_TP_ADD_TC(tp, traceme_lwpinfo2); \
ATF_TP_ADD_TC(tp, traceme_lwpinfo3); \
ATF_TP_ADD_TC(tp, traceme_lwpinfo0_lwpstatus); \
ATF_TP_ADD_TC(tp, traceme_lwpinfo1_lwpstatus); \
ATF_TP_ADD_TC(tp, traceme_lwpinfo2_lwpstatus); \
ATF_TP_ADD_TC(tp, traceme_lwpinfo3_lwpstatus); \
ATF_TP_ADD_TC(tp, traceme_lwpinfo0_lwpstatus_pl_sigmask); \
ATF_TP_ADD_TC(tp, traceme_lwpinfo1_lwpstatus_pl_sigmask); \
ATF_TP_ADD_TC(tp, traceme_lwpinfo2_lwpstatus_pl_sigmask); \
ATF_TP_ADD_TC(tp, traceme_lwpinfo3_lwpstatus_pl_sigmask); \
ATF_TP_ADD_TC(tp, traceme_lwpinfo0_lwpstatus_pl_name); \
ATF_TP_ADD_TC(tp, traceme_lwpinfo1_lwpstatus_pl_name); \
ATF_TP_ADD_TC(tp, traceme_lwpinfo2_lwpstatus_pl_name); \
ATF_TP_ADD_TC(tp, traceme_lwpinfo3_lwpstatus_pl_name); \
ATF_TP_ADD_TC(tp, traceme_lwpinfo0_lwpstatus_pl_private); \
ATF_TP_ADD_TC(tp, traceme_lwpinfo1_lwpstatus_pl_private); \
ATF_TP_ADD_TC(tp, traceme_lwpinfo2_lwpstatus_pl_private); \
ATF_TP_ADD_TC(tp, traceme_lwpinfo3_lwpstatus_pl_private); \
ATF_TP_ADD_TC(tp, traceme_lwpnext0); \
ATF_TP_ADD_TC(tp, traceme_lwpnext1); \
ATF_TP_ADD_TC(tp, traceme_lwpnext2); \
ATF_TP_ADD_TC(tp, traceme_lwpnext3); \
ATF_TP_ADD_TC(tp, traceme_lwpnext0_pl_sigmask); \
ATF_TP_ADD_TC(tp, traceme_lwpnext1_pl_sigmask); \
ATF_TP_ADD_TC(tp, traceme_lwpnext2_pl_sigmask); \
ATF_TP_ADD_TC(tp, traceme_lwpnext3_pl_sigmask); \
ATF_TP_ADD_TC(tp, traceme_lwpnext0_pl_name); \
ATF_TP_ADD_TC(tp, traceme_lwpnext1_pl_name); \
ATF_TP_ADD_TC(tp, traceme_lwpnext2_pl_name); \
ATF_TP_ADD_TC(tp, traceme_lwpnext3_pl_name); \
ATF_TP_ADD_TC(tp, traceme_lwpnext0_pl_private); \
ATF_TP_ADD_TC(tp, traceme_lwpnext1_pl_private); \
ATF_TP_ADD_TC(tp, traceme_lwpnext2_pl_private); \
ATF_TP_ADD_TC(tp, traceme_lwpnext3_pl_private); \
ATF_TP_ADD_TC_HAVE_PID(tp, attach_lwpinfo0); \
ATF_TP_ADD_TC_HAVE_PID(tp, attach_lwpinfo1); \
ATF_TP_ADD_TC_HAVE_PID(tp, attach_lwpinfo2); \
ATF_TP_ADD_TC_HAVE_PID(tp, attach_lwpinfo3);