nptl: Add sendmmsg and recvmmsg cancellation tests

This patch adds cancellation tests for both sendmmsg and recvmmsg
syscalls.  Since for some system configuration (x86_64/i686 on
older kernels and non-Linux platforms), the tests are added as
two independent that report as unsupported if the syscall is not
presented.

Both new tests uses the already tst-cancel4.c code, which as moved
to a common tst-cancel4-common{.c,h} files.

Tested on x86_64 and i686.

	* nptl/Makefile (test): Add tst-cancel4_1 and tst-cancel4_2.
	* nptl/tst-cancel4-common.c: New file.
	* nptl/tst-cancel4-common.h: Likewise.
	* nptl/tst-cancel4.c: Move common definitions to
	tst-cancel4-common.{c,h} file.
	* nptl/tst-cancel4_1.c: New test.
	* nptl/tst-cancel4_2.c: New test.

ChangeLog

@@ -1,3 +1,13 @@
+2016-06-13  Adhemerval Zanella  <adhemerval.zanella@linaro.org>
+
+	* nptl/Makefile (test): Add tst-cancel4_1 and tst-cancel4_2.
+	* nptl/tst-cancel4-common.c: New file.
+	* nptl/tst-cancel4-common.h: Likewise.
+	* nptl/tst-cancel4.c: Move common definitions to
+	tst-cancel4-common.{c,h} file.
+	* nptl/tst-cancel4_1.c: New test.
+	* nptl/tst-cancel4_2.c: New test.
+
 2016-06-13  Florian Weimer  <fweimer@redhat.com>
 
 	[BZ #20248]

nptl/Makefile

@@ -255,7 +255,8 @@ tests = tst-typesizes \
 	tst-tls1 tst-tls2 \
 	tst-fork1 tst-fork2 tst-fork3 tst-fork4 \
 	tst-atfork1 \
-	tst-cancel1 tst-cancel2 tst-cancel3 tst-cancel4 tst-cancel5 \
+	tst-cancel1 tst-cancel2 tst-cancel3 tst-cancel4 tst-cancel4_1 \
+	tst-cancel4_2 tst-cancel5 \
 	tst-cancel6 tst-cancel7 tst-cancel8 tst-cancel9 tst-cancel10 \
 	tst-cancel11 tst-cancel12 tst-cancel13 tst-cancel14 tst-cancel15 \
 	tst-cancel16 tst-cancel17 tst-cancel18 tst-cancel19 tst-cancel20 \

nptl/tst-cancel4-common.c

@@ -0,0 +1,257 @@
+/* Common file for all tst-cancel4_*
+
+   Copyright (C) 2016 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   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/>.  */
+
+static int
+do_test (void)
+{
+  int val;
+  socklen_t len;
+
+  if (socketpair (AF_UNIX, SOCK_STREAM, PF_UNIX, fds) != 0)
+    {
+      perror ("socketpair");
+      exit (1);
+    }
+
+  val = 1;
+  len = sizeof(val);
+  setsockopt (fds[1], SOL_SOCKET, SO_SNDBUF, &val, sizeof(val));
+  if (getsockopt (fds[1], SOL_SOCKET, SO_SNDBUF, &val, &len) < 0)
+    {
+      perror ("getsockopt");
+      exit (1);
+    }
+  if (val >= WRITE_BUFFER_SIZE)
+    {
+      puts ("minimum write buffer size too large");
+      exit (1);
+    }
+  setsockopt (fds[1], SOL_SOCKET, SO_SNDBUF, &val, sizeof(val));
+
+  int result = 0;
+  size_t cnt;
+  for (cnt = 0; cnt < ntest_tf; ++cnt)
+    {
+      if (tests[cnt].only_early)
+	continue;
+
+      if (pthread_barrier_init (&b2, NULL, tests[cnt].nb) != 0)
+	{
+	  puts ("b2 init failed");
+	  exit (1);
+	}
+
+      /* Reset the counter for the cleanup handler.  */
+      cl_called = 0;
+
+      pthread_t th;
+      if (pthread_create (&th, NULL, tests[cnt].tf, NULL) != 0)
+	{
+	  printf ("create for '%s' test failed\n", tests[cnt].name);
+	  result = 1;
+	  continue;
+	}
+
+      int r = pthread_barrier_wait (&b2);
+      if (r != 0 && r != PTHREAD_BARRIER_SERIAL_THREAD)
+	{
+	  printf ("%s: barrier_wait failed\n", __FUNCTION__);
+	  result = 1;
+	  continue;
+	}
+
+      struct timespec  ts = { .tv_sec = 0, .tv_nsec = 100000000 };
+      while (nanosleep (&ts, &ts) != 0)
+	continue;
+
+      if (pthread_cancel (th) != 0)
+	{
+	  printf ("cancel for '%s' failed\n", tests[cnt].name);
+	  result = 1;
+	  continue;
+	}
+
+      void *status;
+      if (pthread_join (th, &status) != 0)
+	{
+	  printf ("join for '%s' failed\n", tests[cnt].name);
+	  result = 1;
+	  continue;
+	}
+      if (status != PTHREAD_CANCELED)
+	{
+	  printf ("thread for '%s' not canceled\n", tests[cnt].name);
+	  result = 1;
+	  continue;
+	}
+
+      if (pthread_barrier_destroy (&b2) != 0)
+	{
+	  puts ("barrier_destroy failed");
+	  result = 1;
+	  continue;
+	}
+
+      if (cl_called == 0)
+	{
+	  printf ("cleanup handler not called for '%s'\n", tests[cnt].name);
+	  result = 1;
+	  continue;
+	}
+      if (cl_called > 1)
+	{
+	  printf ("cleanup handler called more than once for '%s'\n",
+		  tests[cnt].name);
+	  result = 1;
+	  continue;
+	}
+
+      printf ("in-time cancel test of '%s' successful\n", tests[cnt].name);
+
+      if (tempfd != -1)
+	{
+	  close (tempfd);
+	  tempfd = -1;
+	}
+      if (tempfd2 != -1)
+	{
+	  close (tempfd2);
+	  tempfd2 = -1;
+	}
+      if (tempfname != NULL)
+	{
+	  unlink (tempfname);
+	  free (tempfname);
+	  tempfname = NULL;
+	}
+      if (tempmsg != -1)
+	{
+	  msgctl (tempmsg, IPC_RMID, NULL);
+	  tempmsg = -1;
+	}
+    }
+
+  for (cnt = 0; cnt < ntest_tf; ++cnt)
+    {
+      if (pthread_barrier_init (&b2, NULL, tests[cnt].nb) != 0)
+	{
+	  puts ("b2 init failed");
+	  exit (1);
+	}
+
+      /* Reset the counter for the cleanup handler.  */
+      cl_called = 0;
+
+      pthread_t th;
+      if (pthread_create (&th, NULL, tests[cnt].tf, (void *) 1l) != 0)
+	{
+	  printf ("create for '%s' test failed\n", tests[cnt].name);
+	  result = 1;
+	  continue;
+	}
+
+      int r = pthread_barrier_wait (&b2);
+      if (r != 0 && r != PTHREAD_BARRIER_SERIAL_THREAD)
+	{
+	  printf ("%s: barrier_wait failed\n", __FUNCTION__);
+	  result = 1;
+	  continue;
+	}
+
+      if (pthread_cancel (th) != 0)
+	{
+	  printf ("cancel for '%s' failed\n", tests[cnt].name);
+	  result = 1;
+	  continue;
+	}
+
+      r = pthread_barrier_wait (&b2);
+      if (r != 0 && r != PTHREAD_BARRIER_SERIAL_THREAD)
+	{
+	  printf ("%s: barrier_wait failed\n", __FUNCTION__);
+	  result = 1;
+	  continue;
+	}
+
+      void *status;
+      if (pthread_join (th, &status) != 0)
+	{
+	  printf ("join for '%s' failed\n", tests[cnt].name);
+	  result = 1;
+	  continue;
+	}
+      if (status != PTHREAD_CANCELED)
+	{
+	  printf ("thread for '%s' not canceled\n", tests[cnt].name);
+	  result = 1;
+	  continue;
+	}
+
+      if (pthread_barrier_destroy (&b2) != 0)
+	{
+	  puts ("barrier_destroy failed");
+	  result = 1;
+	  continue;
+	}
+
+      if (cl_called == 0)
+	{
+	  printf ("cleanup handler not called for '%s'\n", tests[cnt].name);
+	  result = 1;
+	  continue;
+	}
+      if (cl_called > 1)
+	{
+	  printf ("cleanup handler called more than once for '%s'\n",
+		  tests[cnt].name);
+	  result = 1;
+	  continue;
+	}
+
+      printf ("early cancel test of '%s' successful\n", tests[cnt].name);
+
+      if (tempfd != -1)
+	{
+	  close (tempfd);
+	  tempfd = -1;
+	}
+      if (tempfd2 != -1)
+	{
+	  close (tempfd2);
+	  tempfd2 = -1;
+	}
+      if (tempfname != NULL)
+	{
+	  unlink (tempfname);
+	  free (tempfname);
+	  tempfname = NULL;
+	}
+      if (tempmsg != -1)
+	{
+	  msgctl (tempmsg, IPC_RMID, NULL);
+	  tempmsg = -1;
+	}
+    }
+
+  return result;
+}
+
+#define TIMEOUT 60
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"

nptl/tst-cancel4-common.h

@@ -0,0 +1,77 @@
+/* Common definition for tst-cancel4_* tests.
+
+   Copyright (C) 2016 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   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 <pthread.h>
+
+/* Pipe descriptors.  */
+static int fds[2];
+
+/* Temporary file descriptor, to be closed after each round.  */
+static int tempfd = -1;
+static int tempfd2 = -1;
+/* Name of temporary file to be removed after each round.  */
+static char *tempfname;
+/* Temporary message queue.  */
+static int tempmsg = -1;
+
+/* Often used barrier for two threads.  */
+static pthread_barrier_t b2;
+
+/* The WRITE_BUFFER_SIZE value needs to be chosen such that if we set
+   the socket send buffer size to '1', a write of this size on that
+   socket will block.
+
+   The Linux kernel imposes a minimum send socket buffer size which
+   has changed over the years.  As of Linux 3.10 the value is:
+
+     2 * (2048 + SKB_DATA_ALIGN(sizeof(struct sk_buff)))
+
+   which is attempting to make sure that with standard MTUs,
+   TCP can always queue up at least 2 full sized packets.
+
+   Furthermore, there is logic in the socket send paths that
+   will allow one more packet (of any size) to be queued up as
+   long as some socket buffer space remains.   Blocking only
+   occurs when we try to queue up a new packet and the send
+   buffer space has already been fully consumed.
+
+   Therefore we must set this value to the largest possible value of
+   the formula above (and since it depends upon the size of "struct
+   sk_buff", it is dependent upon machine word size etc.) plus some
+   slack space.  */
+
+#define WRITE_BUFFER_SIZE 16384
+
+/* Cleanup handling test.  */
+static int cl_called;
+
+static void
+cl (void *arg)
+{
+  ++cl_called;
+}
+
+struct cancel_tests
+{
+  const char *name;
+  void *(*tf) (void *);
+  int nb;
+  int only_early;
+};
+#define ADD_TEST(name, nbar, early) { #name, tf_##name, nbar, early }

nptl/tst-cancel4.c

@@ -19,23 +19,21 @@
 /* NOTE: this tests functionality beyond POSIX.  POSIX does not allow
    exit to be called more than once.  */
 
-#include <errno.h>
-#include <fcntl.h>
-#include <limits.h>
-#include <pthread.h>
-#include <stddef.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
-#include <termios.h>
+#include <sys/types.h>
-#include <unistd.h>
-#include <sys/mman.h>
-#include <sys/msg.h>
-#include <sys/poll.h>
-#include <sys/select.h>
 #include <sys/socket.h>
-#include <sys/uio.h>
 #include <sys/un.h>
+#include <sys/ipc.h>
+#include <sys/msg.h>
+#include <unistd.h>
+#include <errno.h>
+#include <pthread.h>
+#include <fcntl.h>
+#include <termios.h>
+#include <sys/mman.h>
+#include <sys/poll.h>
 #include <sys/wait.h>
 
 #include "pthreadP.h"
@@ -62,62 +60,17 @@
    aio_suspend() is tested in tst-cancel17.
 
    clock_nanosleep() is tested in tst-cancel18.
+
+   Linux sendmmsg and recvmmsg are checked in tst-cancel4_1.c and
+   tst-cancel4_2.c respectively.
 */
 
-/* Pipe descriptors.  */
+#include "tst-cancel4-common.h"
-static int fds[2];
-
-/* Temporary file descriptor, to be closed after each round.  */
-static int tempfd = -1;
-static int tempfd2 = -1;
-/* Name of temporary file to be removed after each round.  */
-static char *tempfname;
-/* Temporary message queue.  */
-static int tempmsg = -1;
-
-/* Often used barrier for two threads.  */
-static pthread_barrier_t b2;
-
 
 #ifndef IPC_ADDVAL
 # define IPC_ADDVAL 0
 #endif
 
-/* The WRITE_BUFFER_SIZE value needs to be chosen such that if we set
-   the socket send buffer size to '1', a write of this size on that
-   socket will block.
-
-   The Linux kernel imposes a minimum send socket buffer size which
-   has changed over the years.  As of Linux 3.10 the value is:
-
-     2 * (2048 + SKB_DATA_ALIGN(sizeof(struct sk_buff)))
-
-   which is attempting to make sure that with standard MTUs,
-   TCP can always queue up at least 2 full sized packets.
-
-   Furthermore, there is logic in the socket send paths that
-   will allow one more packet (of any size) to be queued up as
-   long as some socket buffer space remains.   Blocking only
-   occurs when we try to queue up a new packet and the send
-   buffer space has already been fully consumed.
-
-   Therefore we must set this value to the largest possible value of
-   the formula above (and since it depends upon the size of "struct
-   sk_buff", it is dependent upon machine word size etc.) plus some
-   slack space.  */
-
-#define WRITE_BUFFER_SIZE 16384
-
-/* Cleanup handling test.  */
-static int cl_called;
-
-static void
-cl (void *arg)
-{
-  ++cl_called;
-}
-
-
 
 static void *
 tf_read  (void *arg)
@@ -1391,7 +1344,6 @@ tf_recvmsg (void *arg)
   exit (1);
 }
 
-
 static void *
 tf_open (void *arg)
 {
@@ -2196,15 +2148,8 @@ tf_msgsnd (void *arg)
 }
 
 
-static struct
+struct cancel_tests tests[] =
 {
-  const char *name;
-  void *(*tf) (void *);
-  int nb;
-  int only_early;
-} tests[] =
-{
-#define ADD_TEST(name, nbar, early) { #name, tf_##name, nbar, early }
   ADD_TEST (read, 2, 0),
   ADD_TEST (readv, 2, 0),
   ADD_TEST (select, 2, 0),
@@ -2249,242 +2194,4 @@ static struct
 };
 #define ntest_tf (sizeof (tests) / sizeof (tests[0]))
 
-
+#include "tst-cancel4-common.c"
-static int
-do_test (void)
-{
-  int val;
-  socklen_t len;
-
-  if (socketpair (AF_UNIX, SOCK_STREAM, PF_UNIX, fds) != 0)
-    {
-      perror ("socketpair");
-      exit (1);
-    }
-
-  val = 1;
-  len = sizeof(val);
-  setsockopt (fds[1], SOL_SOCKET, SO_SNDBUF, &val, sizeof(val));
-  if (getsockopt (fds[1], SOL_SOCKET, SO_SNDBUF, &val, &len) < 0)
-    {
-      perror ("getsockopt");
-      exit (1);
-    }
-  if (val >= WRITE_BUFFER_SIZE)
-    {
-      puts ("minimum write buffer size too large");
-      exit (1);
-    }
-  setsockopt (fds[1], SOL_SOCKET, SO_SNDBUF, &val, sizeof(val));
-
-  int result = 0;
-  size_t cnt;
-  for (cnt = 0; cnt < ntest_tf; ++cnt)
-    {
-      if (tests[cnt].only_early)
-	continue;
-
-      if (pthread_barrier_init (&b2, NULL, tests[cnt].nb) != 0)
-	{
-	  puts ("b2 init failed");
-	  exit (1);
-	}
-
-      /* Reset the counter for the cleanup handler.  */
-      cl_called = 0;
-
-      pthread_t th;
-      if (pthread_create (&th, NULL, tests[cnt].tf, NULL) != 0)
-	{
-	  printf ("create for '%s' test failed\n", tests[cnt].name);
-	  result = 1;
-	  continue;
-	}
-
-      int r = pthread_barrier_wait (&b2);
-      if (r != 0 && r != PTHREAD_BARRIER_SERIAL_THREAD)
-	{
-	  printf ("%s: barrier_wait failed\n", __FUNCTION__);
-	  result = 1;
-	  continue;
-	}
-
-      struct timespec  ts = { .tv_sec = 0, .tv_nsec = 100000000 };
-      while (nanosleep (&ts, &ts) != 0)
-	continue;
-
-      if (pthread_cancel (th) != 0)
-	{
-	  printf ("cancel for '%s' failed\n", tests[cnt].name);
-	  result = 1;
-	  continue;
-	}
-
-      void *status;
-      if (pthread_join (th, &status) != 0)
-	{
-	  printf ("join for '%s' failed\n", tests[cnt].name);
-	  result = 1;
-	  continue;
-	}
-      if (status != PTHREAD_CANCELED)
-	{
-	  printf ("thread for '%s' not canceled\n", tests[cnt].name);
-	  result = 1;
-	  continue;
-	}
-
-      if (pthread_barrier_destroy (&b2) != 0)
-	{
-	  puts ("barrier_destroy failed");
-	  result = 1;
-	  continue;
-	}
-
-      if (cl_called == 0)
-	{
-	  printf ("cleanup handler not called for '%s'\n", tests[cnt].name);
-	  result = 1;
-	  continue;
-	}
-      if (cl_called > 1)
-	{
-	  printf ("cleanup handler called more than once for '%s'\n",
-		  tests[cnt].name);
-	  result = 1;
-	  continue;
-	}
-
-      printf ("in-time cancel test of '%s' successful\n", tests[cnt].name);
-
-      if (tempfd != -1)
-	{
-	  close (tempfd);
-	  tempfd = -1;
-	}
-      if (tempfd2 != -1)
-	{
-	  close (tempfd2);
-	  tempfd2 = -1;
-	}
-      if (tempfname != NULL)
-	{
-	  unlink (tempfname);
-	  free (tempfname);
-	  tempfname = NULL;
-	}
-      if (tempmsg != -1)
-	{
-	  msgctl (tempmsg, IPC_RMID, NULL);
-	  tempmsg = -1;
-	}
-    }
-
-  for (cnt = 0; cnt < ntest_tf; ++cnt)
-    {
-      if (pthread_barrier_init (&b2, NULL, tests[cnt].nb) != 0)
-	{
-	  puts ("b2 init failed");
-	  exit (1);
-	}
-
-      /* Reset the counter for the cleanup handler.  */
-      cl_called = 0;
-
-      pthread_t th;
-      if (pthread_create (&th, NULL, tests[cnt].tf, (void *) 1l) != 0)
-	{
-	  printf ("create for '%s' test failed\n", tests[cnt].name);
-	  result = 1;
-	  continue;
-	}
-
-      int r = pthread_barrier_wait (&b2);
-      if (r != 0 && r != PTHREAD_BARRIER_SERIAL_THREAD)
-	{
-	  printf ("%s: barrier_wait failed\n", __FUNCTION__);
-	  result = 1;
-	  continue;
-	}
-
-      if (pthread_cancel (th) != 0)
-	{
-	  printf ("cancel for '%s' failed\n", tests[cnt].name);
-	  result = 1;
-	  continue;
-	}
-
-      r = pthread_barrier_wait (&b2);
-      if (r != 0 && r != PTHREAD_BARRIER_SERIAL_THREAD)
-	{
-	  printf ("%s: barrier_wait failed\n", __FUNCTION__);
-	  result = 1;
-	  continue;
-	}
-
-      void *status;
-      if (pthread_join (th, &status) != 0)
-	{
-	  printf ("join for '%s' failed\n", tests[cnt].name);
-	  result = 1;
-	  continue;
-	}
-      if (status != PTHREAD_CANCELED)
-	{
-	  printf ("thread for '%s' not canceled\n", tests[cnt].name);
-	  result = 1;
-	  continue;
-	}
-
-      if (pthread_barrier_destroy (&b2) != 0)
-	{
-	  puts ("barrier_destroy failed");
-	  result = 1;
-	  continue;
-	}
-
-      if (cl_called == 0)
-	{
-	  printf ("cleanup handler not called for '%s'\n", tests[cnt].name);
-	  result = 1;
-	  continue;
-	}
-      if (cl_called > 1)
-	{
-	  printf ("cleanup handler called more than once for '%s'\n",
-		  tests[cnt].name);
-	  result = 1;
-	  continue;
-	}
-
-      printf ("early cancel test of '%s' successful\n", tests[cnt].name);
-
-      if (tempfd != -1)
-	{
-	  close (tempfd);
-	  tempfd = -1;
-	}
-      if (tempfd2 != -1)
-	{
-	  close (tempfd2);
-	  tempfd2 = -1;
-	}
-      if (tempfname != NULL)
-	{
-	  unlink (tempfname);
-	  free (tempfname);
-	  tempfname = NULL;
-	}
-      if (tempmsg != -1)
-	{
-	  msgctl (tempmsg, IPC_RMID, NULL);
-	  tempmsg = -1;
-	}
-    }
-
-  return result;
-}
-
-#define TIMEOUT 60
-#define TEST_FUNCTION do_test ()
-#include "../test-skeleton.c"

nptl/tst-cancel4_1.c

@@ -0,0 +1,127 @@
+/* Check sendmmsg cancellation.
+
+   Copyright (C) 2016 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   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 <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <sys/un.h>
+#include <sys/ipc.h>
+#include <sys/msg.h>
+#include <unistd.h>
+#include <errno.h>
+#include <pthread.h>
+
+#include "tst-cancel4-common.h"
+
+static void *
+tf_sendmmsg (void *arg)
+{
+  if (arg == NULL)
+    // XXX If somebody can provide a portable test case in which sendmmsg()
+    // blocks we can enable this test to run in both rounds.
+    abort ();
+
+  struct sockaddr_un sun;
+
+  tempfd = socket (AF_UNIX, SOCK_DGRAM, 0);
+  if (tempfd == -1)
+    {
+      printf ("%s: first socket call failed\n", __FUNCTION__);
+      exit (1);
+    }
+
+  int tries = 0;
+  do
+    {
+      if (++tries > 10)
+	{
+	  printf ("%s: too many unsuccessful bind calls\n", __FUNCTION__);
+	}
+
+      strcpy (sun.sun_path, "/tmp/tst-cancel4-socket-7-XXXXXX");
+      if (mktemp (sun.sun_path) == NULL)
+	{
+	  printf ("%s: cannot generate temp file name\n", __FUNCTION__);
+	  exit (1);
+	}
+
+      sun.sun_family = AF_UNIX;
+    }
+  while (bind (tempfd, (struct sockaddr *) &sun,
+	       offsetof (struct sockaddr_un, sun_path)
+	       + strlen (sun.sun_path) + 1) != 0);
+  tempfname = strdup (sun.sun_path);
+
+  tempfd2 = socket (AF_UNIX, SOCK_DGRAM, 0);
+  if (tempfd2 == -1)
+    {
+      printf ("%s: second socket call failed\n", __FUNCTION__);
+      exit (1);
+    }
+
+  int r = pthread_barrier_wait (&b2);
+  if (r != 0 && r != PTHREAD_BARRIER_SERIAL_THREAD)
+    {
+      printf ("%s: barrier_wait failed\n", __FUNCTION__);
+      exit (1);
+    }
+
+  r = pthread_barrier_wait (&b2);
+  if (r != 0 && r != PTHREAD_BARRIER_SERIAL_THREAD)
+    {
+      printf ("%s: 2nd barrier_wait failed\n", __FUNCTION__);
+      exit (1);
+    }
+
+  pthread_cleanup_push (cl, NULL);
+
+  char mem[1];
+  struct iovec iov[1];
+  iov[0].iov_base = mem;
+  iov[0].iov_len = 1;
+
+  struct mmsghdr mm;
+  mm.msg_hdr.msg_name = &sun;
+  mm.msg_hdr.msg_namelen = (offsetof (struct sockaddr_un, sun_path)
+			   + strlen (sun.sun_path) + 1);
+  mm.msg_hdr.msg_iov = iov;
+  mm.msg_hdr.msg_iovlen = 1;
+  mm.msg_hdr.msg_control = NULL;
+  mm.msg_hdr.msg_controllen = 0;
+
+  ssize_t ret = sendmmsg (tempfd2, &mm, 1, 0);
+  if (ret == -1 && errno == ENOSYS)
+    exit (77);
+
+  pthread_cleanup_pop (0);
+
+  printf ("%s: sendmmsg returned\n", __FUNCTION__);
+
+  exit (1);
+}
+
+struct cancel_tests tests[] =
+{
+  ADD_TEST (sendmmsg, 2, 1),
+};
+#define ntest_tf (sizeof (tests) / sizeof (tests[0]))
+
+#include "tst-cancel4-common.c"

nptl/tst-cancel4_2.c

@@ -0,0 +1,125 @@
+/* Check recvmmsg cancellation.
+
+   Copyright (C) 2016 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   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 <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <sys/un.h>
+#include <sys/ipc.h>
+#include <sys/msg.h>
+#include <unistd.h>
+#include <errno.h>
+#include <pthread.h>
+
+#include "tst-cancel4-common.h"
+
+static void *
+tf_recvmmsg (void *arg)
+{
+  struct sockaddr_un sun;
+
+  tempfd = socket (AF_UNIX, SOCK_DGRAM, 0);
+  if (tempfd == -1)
+    {
+      printf ("%s: first socket call failed\n", __FUNCTION__);
+      exit (1);
+    }
+
+  int tries = 0;
+  do
+    {
+      if (++tries > 10)
+	{
+	  printf ("%s: too many unsuccessful bind calls\n", __FUNCTION__);
+	}
+
+      strcpy (sun.sun_path, "/tmp/tst-cancel4-socket-5-XXXXXX");
+      if (mktemp (sun.sun_path) == NULL)
+	{
+	  printf ("%s: cannot generate temp file name\n", __FUNCTION__);
+	  exit (1);
+	}
+
+      sun.sun_family = AF_UNIX;
+    }
+  while (bind (tempfd, (struct sockaddr *) &sun,
+	       offsetof (struct sockaddr_un, sun_path)
+	       + strlen (sun.sun_path) + 1) != 0);
+
+  tempfname = strdup (sun.sun_path);
+
+  tempfd2 = socket (AF_UNIX, SOCK_DGRAM, 0);
+  if (tempfd2 == -1)
+    {
+      printf ("%s: second socket call failed\n", __FUNCTION__);
+      exit (1);
+    }
+
+  int r = pthread_barrier_wait (&b2);
+  if (r != 0 && r != PTHREAD_BARRIER_SERIAL_THREAD)
+    {
+      printf ("%s: barrier_wait failed\n", __FUNCTION__);
+      exit (1);
+    }
+
+  if (arg != NULL)
+    {
+      r = pthread_barrier_wait (&b2);
+      if (r != 0 && r != PTHREAD_BARRIER_SERIAL_THREAD)
+	{
+	  printf ("%s: 2nd barrier_wait failed\n", __FUNCTION__);
+	  exit (1);
+	}
+    }
+
+  pthread_cleanup_push (cl, NULL);
+
+  char mem[70];
+  struct iovec iov[1];
+  iov[0].iov_base = mem;
+  iov[0].iov_len = arg == NULL ? sizeof (mem) : 0;
+
+  struct mmsghdr mm;
+  mm.msg_hdr.msg_name = &sun;
+  mm.msg_hdr.msg_namelen = sizeof (sun);
+  mm.msg_hdr.msg_iov = iov;
+  mm.msg_hdr.msg_iovlen = 1;
+  mm.msg_hdr.msg_control = NULL;
+  mm.msg_hdr.msg_controllen = 0;
+
+  ssize_t ret = recvmmsg (tempfd2, &mm, 1, 0, NULL);
+  if (ret == -1 && errno == ENOSYS)
+    exit (77);
+
+  pthread_cleanup_pop (0);
+
+  printf ("%s: recvmmsg returned\n", __FUNCTION__);
+
+  exit (1);
+}
+
+struct cancel_tests tests[] =
+{
+  ADD_TEST (recvmmsg, 2, 1),
+};
+#define ntest_tf (sizeof (tests) / sizeof (tests[0]))
+
+#include "tst-cancel4-common.c"