rt/tst-mqueue4.c

   1 /* Test message queue passing.
   2    Copyright (C) 2004-2014 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4    Contributed by Jakub Jelinek <jakub@redhat.com>, 2004.
   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 <errno.h>
  21 #include <fcntl.h>
  22 #include <mqueue.h>
  23 #include <limits.h>
  24 #include <signal.h>
  25 #include <stdio.h>
  26 #include <stdlib.h>
  27 #include <string.h>
  28 #include <sys/time.h>
  29 #include <sys/wait.h>
  30 #include <time.h>
  31 #include <unistd.h>
  32 #include "tst-mqueue.h"
  33
  34 #define TIMEOUT 4
  35 #define TEST_FUNCTION do_test ()
  36 static int
  37 do_test (void)
  38 {
  39   int result = 0;
  40
  41   char name[sizeof "/tst-mqueue4-" + sizeof (pid_t) * 3 + NAME_MAX];
  42   char *p;
  43   p = name + snprintf (name, sizeof (name), "/tst-mqueue4-%u", getpid ());
  44   struct mq_attr attr = { .mq_maxmsg = 2, .mq_msgsize = 2 };
  45   mqd_t q = mq_open (name, O_CREAT | O_EXCL | O_RDWR, 0600, &attr);
  46
  47   if (q == (mqd_t) -1)
  48     {
  49       printf ("mq_open failed with: %m\n");
  50       return result;
  51     }
  52   else
  53     add_temp_mq (name);
  54
  55   *p = '.';
  56   memset (p + 1, 'x', NAME_MAX + 1 - (p - name));
  57   name[NAME_MAX + 1] = '\0';
  58
  59   mqd_t q2 = mq_open (name, O_CREAT | O_EXCL | O_RDWR, 0600, &attr);
  60   if (q2 == (mqd_t) -1)
  61     {
  62       printf ("mq_open with NAME_MAX long name compoment failed with: %m\n");
  63       result = 1;
  64     }
  65
  66   if (mq_unlink (name) != 0)
  67     {
  68       printf ("mq_unlink failed: %m\n");
  69       result = 1;
  70     }
  71
  72   if (mq_close (q2) != 0)
  73     {
  74       printf ("mq_close failed: %m\n");
  75       result = 1;
  76     }
  77
  78   name[NAME_MAX + 1] = 'x';
  79   name[NAME_MAX + 2] = '\0';
  80   q2 = mq_open (name, O_CREAT | O_EXCL | O_RDWR, 0600, &attr);
  81   if (q2 != (mqd_t) -1)
  82     {
  83       puts ("mq_open with too long name component unexpectedly succeeded");
  84       mq_unlink (name);
  85       mq_close (q2);
  86       result = 1;
  87     }
  88   else if (errno != ENAMETOOLONG)
  89     {
  90       printf ("mq_open with too long name component did not fail with "
  91               "ENAMETOOLONG: %m\n");
  92       result = 1;
  93     }
  94
  95   if (mq_unlink (name) == 0)
  96     {
  97       puts ("mq_unlink with too long name component unexpectedly succeeded");
  98       result = 1;
  99     }
 100   else if (errno != ENAMETOOLONG)
 101     {
 102       printf ("mq_unlink with too long name component did not fail with "
 103               "ENAMETOOLONG: %m\n");
 104       result = 1;
 105     }
 106
 107   *p = '\0';
 108   attr.mq_maxmsg = 1;
 109   attr.mq_msgsize = 3;
 110   q2 = mq_open (name, O_CREAT | O_RDWR, 0600, &attr);
 111   if (q2 == (mqd_t) -1)
 112     {
 113       printf ("mq_open without O_EXCL failed with %m\n");
 114       result = 1;
 115     }
 116
 117   char buf[3];
 118   strcpy (buf, "jk");
 119   if (mq_send (q, buf, 2, 4) != 0)
 120     {
 121       printf ("mq_send failed: %m\n");
 122       result = 1;
 123     }
 124
 125   if (mq_send (q, buf + 1, 1, 5) != 0)
 126     {
 127       printf ("mq_send failed: %m\n");
 128       result = 1;
 129     }
 130
 131   if (mq_getattr (q2, &attr) != 0)
 132     {
 133       printf ("mq_getattr failed: %m\n");
 134       result = 1;
 135     }
 136
 137   if ((attr.mq_flags & O_NONBLOCK)
 138       || attr.mq_maxmsg != 2
 139       || attr.mq_msgsize != 2
 140       || attr.mq_curmsgs != 2)
 141     {
 142       printf ("mq_getattr returned unexpected { .mq_flags = %ld,\n"
 143               ".mq_maxmsg = %ld, .mq_msgsize = %ld, .mq_curmsgs = %ld }\n",
 144               attr.mq_flags, attr.mq_maxmsg, attr.mq_msgsize, attr.mq_curmsgs);
 145       result = 1;
 146     }
 147
 148   struct timespec ts;
 149   if (clock_gettime (CLOCK_REALTIME, &ts) == 0)
 150     ++ts.tv_sec;
 151   else
 152     {
 153       ts.tv_sec = time (NULL) + 1;
 154       ts.tv_nsec = 0;
 155     }
 156
 157   if (mq_timedsend (q2, buf, 1, 1, &ts) == 0)
 158     {
 159       puts ("mq_timedsend unexpectedly succeeded");
 160       result = 1;
 161     }
 162   else if (errno != ETIMEDOUT)
 163     {
 164       printf ("mq_timedsend did not fail with ETIMEDOUT: %m\n");
 165       result = 1;
 166     }
 167
 168   if (mq_close (q2) != 0)
 169     {
 170       printf ("mq_close failed: %m\n");
 171       result = 1;
 172     }
 173
 174   q2 = mq_open (name, O_RDONLY, 0600);
 175   if (q2 == (mqd_t) -1)
 176     {
 177       printf ("mq_open without O_CREAT failed with %m\n");
 178       result = 1;
 179     }
 180
 181   mqd_t q3 = mq_open (name, O_RDONLY, 0600);
 182   if (q3 == (mqd_t) -1)
 183     {
 184       printf ("mq_open without O_CREAT failed with %m\n");
 185       result = 1;
 186     }
 187
 188   memset (buf, ' ', sizeof (buf));
 189
 190   unsigned int prio;
 191   ssize_t rets = mq_receive (q2, buf, 2, &prio);
 192   if (rets != 1)
 193     {
 194       if (rets == -1)
 195         printf ("mq_receive failed with: %m\n");
 196       else
 197         printf ("mq_receive returned %zd != 1\n", rets);
 198       result = 1;
 199     }
 200   else if (prio != 5 || memcmp (buf, "k  ", 3) != 0)
 201     {
 202       printf ("mq_receive returned prio %u (2) buf \"%c%c%c\" (\"k  \")\n",
 203               prio, buf[0], buf[1], buf[2]);
 204       result = 1;
 205     }
 206
 207   if (mq_getattr (q3, &attr) != 0)
 208     {
 209       printf ("mq_getattr failed: %m\n");
 210       result = 1;
 211     }
 212
 213   if ((attr.mq_flags & O_NONBLOCK)
 214       || attr.mq_maxmsg != 2
 215       || attr.mq_msgsize != 2
 216       || attr.mq_curmsgs != 1)
 217     {
 218       printf ("mq_getattr returned unexpected { .mq_flags = %ld,\n"
 219               ".mq_maxmsg = %ld, .mq_msgsize = %ld, .mq_curmsgs = %ld }\n",
 220               attr.mq_flags, attr.mq_maxmsg, attr.mq_msgsize, attr.mq_curmsgs);
 221       result = 1;
 222     }
 223
 224   rets = mq_receive (q3, buf, 2, NULL);
 225   if (rets != 2)
 226     {
 227       if (rets == -1)
 228         printf ("mq_receive failed with: %m\n");
 229       else
 230         printf ("mq_receive returned %zd != 2\n", rets);
 231       result = 1;
 232     }
 233   else if (memcmp (buf, "jk ", 3) != 0)
 234     {
 235       printf ("mq_receive returned buf \"%c%c%c\" != \"jk \"\n",
 236               buf[0], buf[1], buf[2]);
 237       result = 1;
 238     }
 239
 240   if (clock_gettime (CLOCK_REALTIME, &ts) == 0)
 241     ++ts.tv_sec;
 242   else
 243     {
 244       ts.tv_sec = time (NULL) + 1;
 245       ts.tv_nsec = 0;
 246     }
 247
 248   if (mq_timedreceive (q2, buf, 2, NULL, &ts) != -1)
 249     {
 250       puts ("mq_timedreceive on empty queue unexpectedly succeeded");
 251       result = 1;
 252     }
 253   else if (errno != ETIMEDOUT)
 254     {
 255       printf ("mq_timedreceive on empty queue did not fail with "
 256               "ETIMEDOUT: %m\n");
 257       result = 1;
 258     }
 259
 260   if (mq_unlink (name) != 0)
 261     {
 262       printf ("mq_unlink failed: %m\n");
 263       result = 1;
 264     }
 265
 266   if (mq_close (q) != 0)
 267     {
 268       printf ("mq_close failed: %m\n");
 269       result = 1;
 270     }
 271
 272   if (mq_close (q2) != 0)
 273     {
 274       printf ("mq_close failed: %m\n");
 275       result = 1;
 276     }
 277
 278   if (mq_close (q3) != 0)
 279     {
 280       printf ("mq_close failed: %m\n");
 281       result = 1;
 282     }
 283
 284   return result;
 285 }
 286
 287 #include "../test-skeleton.c"