/* Test mq_notify.
Copyright (C) 2004-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Jakub Jelinek <jakub@redhat.com>, 2004.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <errno.h>
#include <fcntl.h>
#include <mqueue.h>
#include <limits.h>
#include <signal.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/mman.h>
#include <sys/time.h>
#include <sys/wait.h>
#include <time.h>
#include <unistd.h>
#include "tst-mqueue.h"
#define TIMEOUT 3
#if _POSIX_THREADS && defined SIGRTMIN && defined SA_SIGINFO
# include <pthread.h>
volatile int rtmin_cnt;
volatile pid_t rtmin_pid;
volatile uid_t rtmin_uid;
volatile int rtmin_code;
volatile union sigval rtmin_sigval;
static void
rtmin_handler (int sig, siginfo_t *info, void *ctx)
{
if (sig != SIGRTMIN)
abort ();
++rtmin_cnt;
rtmin_pid = info->si_pid;
rtmin_uid = info->si_uid;
rtmin_code = info->si_code;
rtmin_sigval = info->si_value;
}
#define mqsend(q) (mqsend) (q, __LINE__)
static int
(mqsend) (mqd_t q, int line)
{
char c;
if (mq_send (q, &c, 1, 1) != 0)
{
printf ("mq_send on line %d failed with: %m\n", line);
return 1;
}
return 0;
}
#define mqrecv(q) (mqrecv) (q, __LINE__)
static int
(mqrecv) (mqd_t q, int line)
{
char c;
ssize_t rets = TEMP_FAILURE_RETRY (mq_receive (q, &c, 1, NULL));
if (rets != 1)
{
if (rets == -1)
printf ("mq_receive on line %d failed with: %m\n", line);
else
printf ("mq_receive on line %d returned %zd != 1\n",
line, rets);
return 1;
}
return 0;
}
struct thr_data
{
const char *name;
pthread_barrier_t *b3;
mqd_t q;
};
static void *
thr (void *arg)
{
pthread_barrier_t *b3 = ((struct thr_data *)arg)->b3;
mqd_t q = ((struct thr_data *)arg)->q;
const char *name = ((struct thr_data *)arg)->name;
int result = 0;
result |= mqrecv (q);
(void) pthread_barrier_wait (b3);
/* Child verifies SIGRTMIN has not been sent. */
(void) pthread_barrier_wait (b3);
/* Parent calls mqsend (q), which should trigger notification. */
(void) pthread_barrier_wait (b3);
if (rtmin_cnt != 2)
{
puts ("SIGRTMIN signal in thread did not arrive");
result = 1;
}
else if (rtmin_pid != getppid ()
|| rtmin_uid != getuid ()
|| rtmin_code != SI_MESGQ
|| rtmin_sigval.sival_int != 0xdeadbeef)
{
printf ("unexpected siginfo_t fields: pid %u (%u), uid %u (%u), code %d (%d), si_int %d (%d)\n",
rtmin_pid, getppid (), rtmin_uid, getuid (),
rtmin_code, SI_MESGQ, rtmin_sigval.sival_int, 0xdeadbeef);
result = 1;
}
struct sigevent ev;
memset (&ev, 0x82, sizeof (ev));
ev.sigev_notify = SIGEV_NONE;
if (mq_notify (q, &ev) != 0)
{
printf ("mq_notify in thread (q, { SIGEV_NONE }) failed with: %m\n");
result = 1;
}
if (mq_notify (q, NULL) != 0)
{
printf ("mq_notify in thread (q, NULL) failed with: %m\n");
result = 1;
}
result |= mqrecv (q);
(void) pthread_barrier_wait (b3);
/* Child calls mq_notify (q, { SIGEV_SIGNAL }). */
(void) pthread_barrier_wait (b3);
if (mq_notify (q, NULL) != 0)
{
printf ("second mq_notify in thread (q, NULL) failed with: %m\n");
result = 1;
}
(void) pthread_barrier_wait (b3);
/* Parent calls mqsend (q), which should not trigger notification. */
(void) pthread_barrier_wait (b3);
/* Child verifies SIGRTMIN has not been received. */
/* Child calls mq_notify (q, { SIGEV_SIGNAL }). */
(void) pthread_barrier_wait (b3);
mqd_t q4 = mq_open (name, O_RDONLY);
if (q4 == (mqd_t) -1)
{
printf ("mq_open in thread failed with: %m\n");
result = 1;
}
if (mq_notify (q4, NULL) != 0)
{
printf ("mq_notify in thread (q4, NULL) failed with: %m\n");
result = 1;
}
if (mq_close (q4) != 0)
{
printf ("mq_close in thread failed with: %m\n");
result = 1;
}
(void) pthread_barrier_wait (b3);
/* Parent calls mqsend (q), which should not trigger notification. */
(void) pthread_barrier_wait (b3);
/* Child verifies SIGRTMIN has not been received. */
/* Child calls mq_notify (q, { SIGEV_SIGNAL }). */
(void) pthread_barrier_wait (b3);
mqd_t q5 = mq_open (name, O_WRONLY);
if (q5 == (mqd_t) -1)
{
printf ("mq_open O_WRONLY in thread failed with: %m\n");
result = 1;
}
if (mq_notify (q5, NULL) != 0)
{
printf ("mq_notify in thread (q5, NULL) failed with: %m\n");
result = 1;
}
if (mq_close (q5) != 0)
{
printf ("mq_close in thread failed with: %m\n");
result = 1;
}
(void) pthread_barrier_wait (b3);
/* Parent calls mqsend (q), which should not trigger notification. */
(void) pthread_barrier_wait (b3);
/* Child verifies SIGRTMIN has not been received. */
return (void *) (long) result;
}
static void
do_child (const char *name, pthread_barrier_t *b2, pthread_barrier_t *b3,
mqd_t q)
{
int result = 0;
struct sigevent ev;
memset (&ev, 0x55, sizeof (ev));
ev.sigev_notify = SIGEV_SIGNAL;
ev.sigev_signo = SIGRTMIN;
ev.sigev_value.sival_ptr = &ev;
if (mq_notify (q, &ev) == 0)
{
puts ("first mq_notify in child (q, { SIGEV_SIGNAL }) unexpectedly succeeded");
result = 1;
}
else if (errno != EBUSY)
{
printf ("first mq_notify in child (q, { SIGEV_SIGNAL }) failed with: %m\n");
result = 1;
}
(void) pthread_barrier_wait (b2);
/* Parent calls mqsend (q), which makes notification available. */
(void) pthread_barrier_wait (b2);
rtmin_cnt = 0;
if (mq_notify (q, &ev) != 0)
{
printf ("second mq_notify in child (q, { SIGEV_SIGNAL }) failed with: %m\n");
result = 1;
}
if (rtmin_cnt != 0)
{
puts ("SIGRTMIN signal in child caught too early");
result = 1;
}
(void) pthread_barrier_wait (b2);
/* Parent unsuccessfully attempts to mq_notify. */
/* Parent calls mqsend (q), which makes notification available
and triggers a signal in the child. */
/* Parent successfully calls mq_notify SIGEV_SIGNAL. */
(void) pthread_barrier_wait (b2);
if (rtmin_cnt != 1)
{
puts ("SIGRTMIN signal in child did not arrive");
result = 1;
}
else if (rtmin_pid != getppid ()
|| rtmin_uid != getuid ()
|| rtmin_code != SI_MESGQ
|| rtmin_sigval.sival_ptr != &ev)
{
printf ("unexpected siginfo_t fields: pid %u (%u), uid %u (%u), code %d (%d), si_ptr %p (%p)\n",
rtmin_pid, getppid (), rtmin_uid, getuid (),
rtmin_code, SI_MESGQ, rtmin_sigval.sival_ptr, &ev);
result = 1;
}
result |= mqsend (q);
(void) pthread_barrier_wait (b2);
/* Parent verifies caught SIGRTMIN. */
mqd_t q2 = mq_open (name, O_RDWR);
if (q2 == (mqd_t) -1)
{
printf ("mq_open in child failed with: %m\n");
result = 1;
}
(void) pthread_barrier_wait (b2);
/* Parent mq_open's another mqd_t for the same queue (q3). */
memset (&ev, 0x11, sizeof (ev));
ev.sigev_notify = SIGEV_SIGNAL;
ev.sigev_signo = SIGRTMIN;
ev.sigev_value.sival_ptr = &ev;
if (mq_notify (q2, &ev) != 0)
{
printf ("mq_notify in child (q2, { SIGEV_SIGNAL }) failed with: %m\n");
result = 1;
}
(void) pthread_barrier_wait (b2);
/* Parent unsuccessfully attempts to mq_notify { SIGEV_NONE } on q. */
(void) pthread_barrier_wait (b2);
if (mq_close (q2) != 0)
{
printf ("mq_close failed: %m\n");
result = 1;
}
(void) pthread_barrier_wait (b2);
/* Parent successfully calls mq_notify { SIGEV_NONE } on q3. */
(void) pthread_barrier_wait (b2);
memset (&ev, 0xbb, sizeof (ev));
ev.sigev_notify = SIGEV_SIGNAL;
ev.sigev_signo = SIGRTMIN;
ev.sigev_value.sival_ptr = &b2;
if (mq_notify (q, &ev) == 0)
{
puts ("third mq_notify in child (q, { SIGEV_SIGNAL }) unexpectedly succeeded");
result = 1;
}
else if (errno != EBUSY)
{
printf ("third mq_notify in child (q, { SIGEV_SIGNAL }) failed with: %m\n");
result = 1;
}
(void) pthread_barrier_wait (b2);
/* Parent calls mq_close on q3, which makes the queue available again for
notification. */
(void) pthread_barrier_wait (b2);
memset (&ev, 0x13, sizeof (ev));
ev.sigev_notify = SIGEV_NONE;
if (mq_notify (q, &ev) != 0)
{
printf ("mq_notify in child (q, { SIGEV_NONE }) failed with: %m\n");
result = 1;
}
if (mq_notify (q, NULL) != 0)
{
printf ("mq_notify in child (q, NULL) failed with: %m\n");
result = 1;
}
(void) pthread_barrier_wait (b2);
struct thr_data thr_data = { .name = name, .b3 = b3, .q = q };
pthread_t th;
int ret = pthread_create (&th, NULL, thr, &thr_data);
if (ret)
{
errno = ret;
printf ("pthread_created failed with: %m\n");
result = 1;
}
/* Wait till thr calls mq_receive on the empty queue q and blocks on it. */
sleep (1);
memset (&ev, 0x5f, sizeof (ev));
ev.sigev_notify = SIGEV_SIGNAL;
ev.sigev_signo = SIGRTMIN;
ev.sigev_value.sival_int = 0xdeadbeef;
if (mq_notify (q, &ev) != 0)
{
printf ("fourth mq_notify in child (q, { SIGEV_SIGNAL }) failed with: %m\n");
result = 1;
}
/* Ensure the thr thread gets the signal, not us. */
sigset_t set;
sigemptyset (&set);
sigaddset (&set, SIGRTMIN);
if (pthread_sigmask (SIG_BLOCK, &set, NULL))
{
printf ("Failed to block SIGRTMIN in child: %m\n");
result = 1;
}
(void) pthread_barrier_wait (b2);
/* Parent calls mqsend (q), which should wake up mqrecv (q)
in the thread but no notification should be sent. */
(void) pthread_barrier_wait (b3);
if (rtmin_cnt != 1)
{
puts ("SIGRTMIN signal caught while thr was blocked on mq_receive");
result = 1;
}
(void) pthread_barrier_wait (b3);
/* Parent calls mqsend (q), which should trigger notification. */
(void) pthread_barrier_wait (b3);
/* Thread verifies SIGRTMIN has been received. */
/* Thread calls mq_notify (q, { SIGEV_NONE }) to verify notification is now
available for registration. */
/* Thread calls mq_notify (q, NULL). */
(void) pthread_barrier_wait (b3);
memset (&ev, 0x6a, sizeof (ev));
ev.sigev_notify = SIGEV_SIGNAL;
ev.sigev_signo = SIGRTMIN;
ev.sigev_value.sival_ptr = do_child;
if (mq_notify (q, &ev) != 0)
{
printf ("fifth mq_notify in child (q, { SIGEV_SIGNAL }) failed with: %m\n");
result = 1;
}
(void) pthread_barrier_wait (b3);
/* Thread calls mq_notify (q, NULL), which should unregister the above
notification. */
(void) pthread_barrier_wait (b3);
/* Parent calls mqsend (q), which should not trigger notification. */
(void) pthread_barrier_wait (b3);
if (rtmin_cnt != 2)
{
puts ("SIGRTMIN signal caught while notification has been disabled");
result = 1;
}
memset (&ev, 0x7b, sizeof (ev));
ev.sigev_notify = SIGEV_SIGNAL;
ev.sigev_signo = SIGRTMIN;
ev.sigev_value.sival_ptr = thr;
if (mq_notify (q, &ev) != 0)
{
printf ("sixth mq_notify in child (q, { SIGEV_SIGNAL }) failed with: %m\n");
result = 1;
}
(void) pthread_barrier_wait (b3);
/* Thread opens a new O_RDONLY mqd_t (q4). */
/* Thread calls mq_notify (q4, NULL), which should unregister the above
notification. */
/* Thread calls mq_close (q4). */
(void) pthread_barrier_wait (b3);
/* Parent calls mqsend (q), which should not trigger notification. */
(void) pthread_barrier_wait (b3);
if (rtmin_cnt != 2)
{
puts ("SIGRTMIN signal caught while notification has been disabled");
result = 1;
}
memset (&ev, 0xe1, sizeof (ev));
ev.sigev_notify = SIGEV_SIGNAL;
ev.sigev_signo = SIGRTMIN;
ev.sigev_value.sival_int = 127;
if (mq_notify (q, &ev) != 0)
{
printf ("seventh mq_notify in child (q, { SIGEV_SIGNAL }) failed with: %m\n");
result = 1;
}
(void) pthread_barrier_wait (b3);
/* Thread opens a new O_WRONLY mqd_t (q5). */
/* Thread calls mq_notify (q5, NULL), which should unregister the above
notification. */
/* Thread calls mq_close (q5). */
(void) pthread_barrier_wait (b3);
/* Parent calls mqsend (q), which should not trigger notification. */
(void) pthread_barrier_wait (b3);
if (rtmin_cnt != 2)
{
puts ("SIGRTMIN signal caught while notification has been disabled");
result = 1;
}
/* Reenable test signals before cleaning up the thread. */
if (pthread_sigmask (SIG_UNBLOCK, &set, NULL))
{
printf ("Failed to unblock SIGRTMIN in child: %m\n");
result = 1;
}
void *thr_ret;
ret = pthread_join (th, &thr_ret);
if (ret)
{
errno = ret;
printf ("pthread_join failed: %m\n");
result = 1;
}
else if (thr_ret)
result = 1;
if (mq_close (q) != 0)
{
printf ("mq_close failed: %m\n");
result = 1;
}
exit (result);
}
#define TEST_FUNCTION do_test ()
static int
do_test (void)
{
int result = 0;
char tmpfname[] = "/tmp/tst-mqueue5-barrier.XXXXXX";
int fd = mkstemp (tmpfname);
if (fd == -1)
{
printf ("cannot open temporary file: %m\n");
return 1;
}
/* Make sure it is always removed. */
unlink (tmpfname);
/* Create one page of data. */
size_t ps = sysconf (_SC_PAGESIZE);
char data[ps];
memset (data, '\0', ps);
/* Write the data to the file. */
if (write (fd, data, ps) != (ssize_t) ps)
{
puts ("short write");
return 1;
}
void *mem = mmap (NULL, ps, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
if (mem == MAP_FAILED)
{
printf ("mmap failed: %m\n");
return 1;
}
pthread_barrier_t *b2;
b2 = (pthread_barrier_t *) (((uintptr_t) mem + __alignof (pthread_barrier_t))
& ~(__alignof (pthread_barrier_t) - 1));
pthread_barrier_t *b3;
b3 = b2 + 1;
pthread_barrierattr_t a;
if (pthread_barrierattr_init (&a) != 0)
{
puts ("barrierattr_init failed");
return 1;
}
if (pthread_barrierattr_setpshared (&a, PTHREAD_PROCESS_SHARED) != 0)
{
puts ("barrierattr_setpshared failed, could not test");
return 0;
}
if (pthread_barrier_init (b2, &a, 2) != 0)
{
puts ("barrier_init failed");
return 1;
}
if (pthread_barrier_init (b3, &a, 3) != 0)
{
puts ("barrier_init failed");
return 1;
}
if (pthread_barrierattr_destroy (&a) != 0)
{
puts ("barrierattr_destroy failed");
return 1;
}
char name[sizeof "/tst-mqueue5-" + sizeof (pid_t) * 3];
snprintf (name, sizeof (name), "/tst-mqueue5-%u", getpid ());
struct mq_attr attr = { .mq_maxmsg = 1, .mq_msgsize = 1 };
mqd_t q = mq_open (name, O_CREAT | O_EXCL | O_RDWR, 0600, &attr);
if (q == (mqd_t) -1)
{
printf ("mq_open failed with: %m\n");
return result;
}
else
add_temp_mq (name);
struct sigevent ev;
memset (&ev, 0xaa, sizeof (ev));
ev.sigev_notify = SIGEV_NONE;
if (mq_notify (q, &ev) != 0)
{
printf ("mq_notify (q, { SIGEV_NONE }) failed with: %m\n");
result = 1;
}
if (mq_notify (q, &ev) == 0)
{
puts ("second mq_notify (q, { SIGEV_NONE }) unexpectedly succeeded");
result = 1;
}
else if (errno != EBUSY)
{
printf ("second mq_notify (q, { SIGEV_NONE }) failed with: %m\n");
result = 1;
}
result |= mqsend (q);
if (mq_notify (q, &ev) != 0)
{
printf ("third mq_notify (q, { SIGEV_NONE }) failed with: %m\n");
result = 1;
}
result |= mqrecv (q);
if (mq_notify (q, NULL) != 0)
{
printf ("mq_notify (q, NULL) failed with: %m\n");
result = 1;
}
if (mq_notify (q, NULL) != 0)
{
/* Implementation-defined behaviour, so don't fail,
just inform. */
printf ("second mq_notify (q, NULL) failed with: %m\n");
}
struct sigaction sa = { .sa_sigaction = rtmin_handler,
.sa_flags = SA_SIGINFO };
sigemptyset (&sa.sa_mask);
sigaction (SIGRTMIN, &sa, NULL);
memset (&ev, 0x55, sizeof (ev));
ev.sigev_notify = SIGEV_SIGNAL;
ev.sigev_signo = SIGRTMIN;
ev.sigev_value.sival_int = 26;
if (mq_notify (q, &ev) != 0)
{
printf ("mq_notify (q, { SIGEV_SIGNAL }) failed with: %m\n");
result = 1;
}
ev.sigev_value.sival_ptr = &ev;
if (mq_notify (q, &ev) == 0)
{
puts ("second mq_notify (q, { SIGEV_SIGNAL }) unexpectedly succeeded");
result = 1;
}
else if (errno != EBUSY)
{
printf ("second mq_notify (q, { SIGEV_SIGNAL }) failed with: %m\n");
result = 1;
}
if (rtmin_cnt != 0)
{
puts ("SIGRTMIN signal caught too early");
result = 1;
}
result |= mqsend (q);
if (rtmin_cnt != 1)
{
puts ("SIGRTMIN signal did not arrive");
result = 1;
}
else if (rtmin_pid != getpid ()
|| rtmin_uid != getuid ()
|| rtmin_code != SI_MESGQ
|| rtmin_sigval.sival_int != 26)
{
printf ("unexpected siginfo_t fields: pid %u (%u), uid %u (%u), code %d (%d), si_int %d (26)\n",
rtmin_pid, getpid (), rtmin_uid, getuid (),
rtmin_code, SI_MESGQ, rtmin_sigval.sival_int);
result = 1;
}
ev.sigev_value.sival_int = 75;
if (mq_notify (q, &ev) != 0)
{
printf ("third mq_notify (q, { SIGEV_SIGNAL }) failed with: %m\n");
result = 1;
}
result |= mqrecv (q);
if (mq_notify (q, NULL) != 0)
{
printf ("mq_notify (q, NULL) failed with: %m\n");
result = 1;
}
memset (&ev, 0x33, sizeof (ev));
ev.sigev_notify = SIGEV_NONE;
if (mq_notify (q, &ev) != 0)
{
printf ("fourth mq_notify (q, { SIGEV_NONE }) failed with: %m\n");
result = 1;
}
pid_t pid = fork ();
if (pid == -1)
{
printf ("fork () failed: %m\n");
mq_unlink (name);
return 1;
}
if (pid == 0)
do_child (name, b2, b3, q);
/* Child unsuccessfully attempts to mq_notify. */
(void) pthread_barrier_wait (b2);
result |= mqsend (q);
(void) pthread_barrier_wait (b2);
/* Child successfully calls mq_notify SIGEV_SIGNAL now. */
result |= mqrecv (q);
(void) pthread_barrier_wait (b2);
memset (&ev, 0xbb, sizeof (ev));
ev.sigev_notify = SIGEV_SIGNAL;
ev.sigev_signo = SIGRTMIN;
ev.sigev_value.sival_int = 15;
if (mq_notify (q, &ev) == 0)
{
puts ("fourth mq_notify (q, { SIGEV_SIGNAL }) unexpectedly succeeded");
result = 1;
}
else if (errno != EBUSY)
{
printf ("fourth mq_notify (q, { SIGEV_SIGNAL }) failed with: %m\n");
result = 1;
}
result |= mqsend (q);
if (mq_notify (q, &ev) != 0)
{
printf ("fifth mq_notify (q, { SIGEV_SIGNAL }) failed with: %m\n");
result = 1;
}
if (rtmin_cnt != 1)
{
puts ("SIGRTMIN signal caught too early");
result = 1;
}
result |= mqrecv (q);
(void) pthread_barrier_wait (b2);
/* Child verifies caught SIGRTMIN signal. */
/* Child calls mq_send (q) which triggers SIGRTMIN signal here. */
(void) pthread_barrier_wait (b2);
/* Child mq_open's another mqd_t for the same queue (q2). */
if (rtmin_cnt != 2)
{
puts ("SIGRTMIN signal did not arrive");
result = 1;
}
else if (rtmin_pid != pid
|| rtmin_uid != getuid ()
|| rtmin_code != SI_MESGQ
|| rtmin_sigval.sival_int != 15)
{
printf ("unexpected siginfo_t fields: pid %u (%u), uid %u (%u), code %d (%d), si_int %d (15)\n",
rtmin_pid, pid, rtmin_uid, getuid (),
rtmin_code, SI_MESGQ, rtmin_sigval.sival_int);
result = 1;
}
result |= mqrecv (q);
(void) pthread_barrier_wait (b2);
/* Child successfully calls mq_notify { SIGEV_SIGNAL } on q2. */
(void) pthread_barrier_wait (b2);
memset (&ev, 0xbb, sizeof (ev));
ev.sigev_notify = SIGEV_NONE;
if (mq_notify (q, &ev) == 0)
{
puts ("fifth mq_notify (q, { SIGEV_NONE }) unexpectedly succeeded");
result = 1;
}
else if (errno != EBUSY)
{
printf ("fifth mq_notify (q, { SIGEV_NONE }) failed with: %m\n");
result = 1;
}
(void) pthread_barrier_wait (b2);
/* Child calls mq_close on q2, which makes the queue available again for
notification. */
mqd_t q3 = mq_open (name, O_RDWR);
if (q3 == (mqd_t) -1)
{
printf ("mq_open q3 in parent failed with: %m\n");
result = 1;
}
(void) pthread_barrier_wait (b2);
memset (&ev, 0x12, sizeof (ev));
ev.sigev_notify = SIGEV_NONE;
if (mq_notify (q3, &ev) != 0)
{
printf ("mq_notify (q3, { SIGEV_NONE }) failed with: %m\n");
result = 1;
}
(void) pthread_barrier_wait (b2);
/* Child unsuccessfully attempts to mq_notify { SIGEV_SIGNAL } on q. */
(void) pthread_barrier_wait (b2);
if (mq_close (q3) != 0)
{
printf ("mq_close failed: %m\n");
result = 1;
}
(void) pthread_barrier_wait (b2);
/* Child successfully calls mq_notify { SIGEV_NONE } on q. */
/* Child successfully calls mq_notify NULL on q. */
(void) pthread_barrier_wait (b2);
/* Child creates new thread. */
/* Thread blocks on mqrecv (q). */
/* Child sleeps for 1sec so that thread has time to reach that point. */
/* Child successfully calls mq_notify { SIGEV_SIGNAL } on q. */
(void) pthread_barrier_wait (b2);
result |= mqsend (q);
(void) pthread_barrier_wait (b3);
/* Child verifies SIGRTMIN has not been sent. */
(void) pthread_barrier_wait (b3);
result |= mqsend (q);
(void) pthread_barrier_wait (b3);
/* Thread verifies SIGRTMIN has been caught. */
/* Thread calls mq_notify (q, { SIGEV_NONE }) to verify notification is now
available for registration. */
/* Thread calls mq_notify (q, NULL). */
(void) pthread_barrier_wait (b3);
/* Child calls mq_notify (q, { SIGEV_SIGNAL }). */
(void) pthread_barrier_wait (b3);
/* Thread calls mq_notify (q, NULL). */
(void) pthread_barrier_wait (b3);
result |= mqsend (q);
result |= mqrecv (q);
(void) pthread_barrier_wait (b3);
/* Child verifies SIGRTMIN has not been sent. */
/* Child calls mq_notify (q, { SIGEV_SIGNAL }). */
(void) pthread_barrier_wait (b3);
/* Thread opens a new O_RDONLY mqd_t (q4). */
/* Thread calls mq_notify (q4, NULL). */
/* Thread calls mq_close (q4). */
(void) pthread_barrier_wait (b3);
result |= mqsend (q);
result |= mqrecv (q);
(void) pthread_barrier_wait (b3);
/* Child verifies SIGRTMIN has not been sent. */
/* Child calls mq_notify (q, { SIGEV_SIGNAL }). */
(void) pthread_barrier_wait (b3);
/* Thread opens a new O_WRONLY mqd_t (q5). */
/* Thread calls mq_notify (q5, NULL). */
/* Thread calls mq_close (q5). */
(void) pthread_barrier_wait (b3);
result |= mqsend (q);
result |= mqrecv (q);
(void) pthread_barrier_wait (b3);
/* Child verifies SIGRTMIN has not been sent. */
int status;
if (TEMP_FAILURE_RETRY (waitpid (pid, &status, 0)) != pid)
{
puts ("waitpid failed");
kill (pid, SIGKILL);
result = 1;
}
else if (!WIFEXITED (status) || WEXITSTATUS (status))
{
printf ("child failed with status %d\n", status);
result = 1;
}
if (mq_unlink (name) != 0)
{
printf ("mq_unlink failed: %m\n");
result = 1;
}
if (mq_close (q) != 0)
{
printf ("mq_close failed: %m\n");
result = 1;
}
if (mq_notify (q, NULL) == 0)
{
puts ("mq_notify on closed mqd_t unexpectedly succeeded");
result = 1;
}
else if (errno != EBADF)
{
printf ("mq_notify on closed mqd_t did not fail with EBADF: %m\n");
result = 1;
}
memset (&ev, 0x55, sizeof (ev));
ev.sigev_notify = SIGEV_NONE;
if (mq_notify (q, &ev) == 0)
{
puts ("mq_notify on closed mqd_t unexpectedly succeeded");
result = 1;
}
else if (errno != EBADF)
{
printf ("mq_notify on closed mqd_t did not fail with EBADF: %m\n");
result = 1;
}
return result;
}
#else
# define TEST_FUNCTION 0
#endif
#include "../test-skeleton.c"