test/nptl/: tests for NPTL

Signed-off-by: Austin Foxley <austinf@cetoncorp.com>

1 files changed, 1014 insertions, 0 deletions

diff --git a/test/nptl/tst-mqueue5.c b/test/nptl/tst-mqueue5.c
new file mode 100644
index 000000000..97571da8a
--- /dev/null
+++ b/test/nptl/tst-mqueue5.c
@@ -0,0 +1,1014 @@
+/* Test mq_notify.
+   Copyright (C) 2004 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, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#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
+# 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 child 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;
+    }
+
+  (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;
+    }
+
+ 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"