nptl/tst-cancel4_2.c

   1 /* Check recvmmsg cancellation.
   2
   3    Copyright (C) 2016-2017 Free Software Foundation, Inc.
   4    This file is part of the GNU C Library.
   5
   6    The GNU C Library is free software; you can redistribute it and/or
   7    modify it under the terms of the GNU Lesser General Public
   8    License as published by the Free Software Foundation; either
   9    version 2.1 of the License, or (at your option) any later version.
  10
  11    The GNU C Library is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14    Lesser General Public License for more details.
  15
  16    You should have received a copy of the GNU Lesser General Public
  17    License along with the GNU C Library; if not, see
  18    <http://www.gnu.org/licenses/>.  */
  19
  20 #include <stdio.h>
  21 #include <stdlib.h>
  22 #include <string.h>
  23 #include <sys/types.h>
  24 #include <sys/socket.h>
  25 #include <sys/un.h>
  26 #include <sys/ipc.h>
  27 #include <sys/msg.h>
  28 #include <unistd.h>
  29 #include <errno.h>
  30 #include <pthread.h>
  31
  32 #include "tst-cancel4-common.h"
  33
  34 static void *
  35 tf_recvmmsg (void *arg)
  36 {
  37   struct sockaddr_un sun;
  38
  39   tempfd = socket (AF_UNIX, SOCK_DGRAM, 0);
  40   if (tempfd == -1)
  41     {
  42       printf ("%s: first socket call failed\n", __FUNCTION__);
  43       exit (1);
  44     }
  45
  46   int tries = 0;
  47   do
  48     {
  49       if (++tries > 10)
  50         {
  51           printf ("%s: too many unsuccessful bind calls\n", __FUNCTION__);
  52         }
  53
  54       strcpy (sun.sun_path, "/tmp/tst-cancel4-socket-5-XXXXXX");
  55       if (mktemp (sun.sun_path) == NULL)
  56         {
  57           printf ("%s: cannot generate temp file name\n", __FUNCTION__);
  58           exit (1);
  59         }
  60
  61       sun.sun_family = AF_UNIX;
  62     }
  63   while (bind (tempfd, (struct sockaddr *) &sun,
  64                offsetof (struct sockaddr_un, sun_path)
  65                + strlen (sun.sun_path) + 1) != 0);
  66
  67   tempfname = strdup (sun.sun_path);
  68
  69   tempfd2 = socket (AF_UNIX, SOCK_DGRAM, 0);
  70   if (tempfd2 == -1)
  71     {
  72       printf ("%s: second socket call failed\n", __FUNCTION__);
  73       exit (1);
  74     }
  75
  76   int r = pthread_barrier_wait (&b2);
  77   if (r != 0 && r != PTHREAD_BARRIER_SERIAL_THREAD)
  78     {
  79       printf ("%s: barrier_wait failed\n", __FUNCTION__);
  80       exit (1);
  81     }
  82
  83   if (arg != NULL)
  84     {
  85       r = pthread_barrier_wait (&b2);
  86       if (r != 0 && r != PTHREAD_BARRIER_SERIAL_THREAD)
  87         {
  88           printf ("%s: 2nd barrier_wait failed\n", __FUNCTION__);
  89           exit (1);
  90         }
  91     }
  92
  93   pthread_cleanup_push (cl, NULL);
  94
  95   char mem[70];
  96   struct iovec iov[1];
  97   iov[0].iov_base = mem;
  98   iov[0].iov_len = arg == NULL ? sizeof (mem) : 0;
  99
 100   struct mmsghdr mm;
 101   mm.msg_hdr.msg_name = &sun;
 102   mm.msg_hdr.msg_namelen = sizeof (sun);
 103   mm.msg_hdr.msg_iov = iov;
 104   mm.msg_hdr.msg_iovlen = 1;
 105   mm.msg_hdr.msg_control = NULL;
 106   mm.msg_hdr.msg_controllen = 0;
 107
 108   ssize_t ret = recvmmsg (tempfd2, &mm, 1, 0, NULL);
 109   if (ret == -1 && errno == ENOSYS)
 110     exit (77);
 111
 112   pthread_cleanup_pop (0);
 113
 114   printf ("%s: recvmmsg returned\n", __FUNCTION__);
 115
 116   exit (1);
 117 }
 118
 119 struct cancel_tests tests[] =
 120 {
 121   ADD_TEST (recvmmsg, 2, 1),
 122 };
 123 #define ntest_tf (sizeof (tests) / sizeof (tests[0]))
 124
 125 #include "tst-cancel4-common.c"