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 <stddef.h>
  22 #include <stdlib.h>
  23 #include <string.h>
  24 #include <sys/types.h>
  25 #include <sys/socket.h>
  26 #include <sys/un.h>
  27 #include <sys/ipc.h>
  28 #include <sys/msg.h>
  29 #include <unistd.h>
  30 #include <errno.h>
  31 #include <pthread.h>
  32
  33 #include "tst-cancel4-common.h"
  34
  35 static void *
  36 tf_recvmmsg (void *arg)
  37 {
  38   struct sockaddr_un sun;
  39
  40   tempfd = socket (AF_UNIX, SOCK_DGRAM, 0);
  41   if (tempfd == -1)
  42     {
  43       printf ("%s: first socket call failed\n", __FUNCTION__);
  44       exit (1);
  45     }
  46
  47   int tries = 0;
  48   do
  49     {
  50       if (++tries > 10)
  51         {
  52           printf ("%s: too many unsuccessful bind calls\n", __FUNCTION__);
  53         }
  54
  55       strcpy (sun.sun_path, "/tmp/tst-cancel4-socket-5-XXXXXX");
  56       if (mktemp (sun.sun_path) == NULL)
  57         {
  58           printf ("%s: cannot generate temp file name\n", __FUNCTION__);
  59           exit (1);
  60         }
  61
  62       sun.sun_family = AF_UNIX;
  63     }
  64   while (bind (tempfd, (struct sockaddr *) &sun,
  65                offsetof (struct sockaddr_un, sun_path)
  66                + strlen (sun.sun_path) + 1) != 0);
  67
  68   tempfname = strdup (sun.sun_path);
  69
  70   tempfd2 = socket (AF_UNIX, SOCK_DGRAM, 0);
  71   if (tempfd2 == -1)
  72     {
  73       printf ("%s: second socket call failed\n", __FUNCTION__);
  74       exit (1);
  75     }
  76
  77   int r = pthread_barrier_wait (&b2);
  78   if (r != 0 && r != PTHREAD_BARRIER_SERIAL_THREAD)
  79     {
  80       printf ("%s: barrier_wait failed\n", __FUNCTION__);
  81       exit (1);
  82     }
  83
  84   if (arg != NULL)
  85     {
  86       r = pthread_barrier_wait (&b2);
  87       if (r != 0 && r != PTHREAD_BARRIER_SERIAL_THREAD)
  88         {
  89           printf ("%s: 2nd barrier_wait failed\n", __FUNCTION__);
  90           exit (1);
  91         }
  92     }
  93
  94   pthread_cleanup_push (cl, NULL);
  95
  96   char mem[70];
  97   struct iovec iov[1];
  98   iov[0].iov_base = mem;
  99   iov[0].iov_len = arg == NULL ? sizeof (mem) : 0;
 100
 101   struct mmsghdr mm;
 102   mm.msg_hdr.msg_name = &sun;
 103   mm.msg_hdr.msg_namelen = sizeof (sun);
 104   mm.msg_hdr.msg_iov = iov;
 105   mm.msg_hdr.msg_iovlen = 1;
 106   mm.msg_hdr.msg_control = NULL;
 107   mm.msg_hdr.msg_controllen = 0;
 108
 109   ssize_t ret = recvmmsg (tempfd2, &mm, 1, 0, NULL);
 110   if (ret == -1 && errno == ENOSYS)
 111     exit (77);
 112
 113   pthread_cleanup_pop (0);
 114
 115   printf ("%s: recvmmsg returned\n", __FUNCTION__);
 116
 117   exit (1);
 118 }
 119
 120 struct cancel_tests tests[] =
 121 {
 122   ADD_TEST (recvmmsg, 2, 1),
 123 };
 124 #define ntest_tf (sizeof (tests) / sizeof (tests[0]))
 125
 126 #include "tst-cancel4-common.c"