rt/tst-mqueue4.c

   1 /* Test message queue passing.
   2    Copyright (C) 2004-2016 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 = %jd,\n"
 143               ".mq_maxmsg = %jd, .mq_msgsize = %jd, .mq_curmsgs = %jd }\n",
 144               (intmax_t) attr.mq_flags, (intmax_t) attr.mq_maxmsg,
 145               (intmax_t) attr.mq_msgsize, (intmax_t) attr.mq_curmsgs);
 146       result = 1;
 147     }
 148
 149   struct timespec ts;
 150   if (clock_gettime (CLOCK_REALTIME, &ts) == 0)
 151     ++ts.tv_sec;
 152   else
 153     {
 154       ts.tv_sec = time (NULL) + 1;
 155       ts.tv_nsec = 0;
 156     }
 157
 158   if (mq_timedsend (q2, buf, 1, 1, &ts) == 0)
 159     {
 160       puts ("mq_timedsend unexpectedly succeeded");
 161       result = 1;
 162     }
 163   else if (errno != ETIMEDOUT)
 164     {
 165       printf ("mq_timedsend did not fail with ETIMEDOUT: %m\n");
 166       result = 1;
 167     }
 168
 169   if (mq_close (q2) != 0)
 170     {
 171       printf ("mq_close failed: %m\n");
 172       result = 1;
 173     }
 174
 175   q2 = mq_open (name, O_RDONLY, 0600);
 176   if (q2 == (mqd_t) -1)
 177     {
 178       printf ("mq_open without O_CREAT failed with %m\n");
 179       result = 1;
 180     }
 181
 182   mqd_t q3 = mq_open (name, O_RDONLY, 0600);
 183   if (q3 == (mqd_t) -1)
 184     {
 185       printf ("mq_open without O_CREAT failed with %m\n");
 186       result = 1;
 187     }
 188
 189   memset (buf, ' ', sizeof (buf));
 190
 191   unsigned int prio;
 192   ssize_t rets = mq_receive (q2, buf, 2, &prio);
 193   if (rets != 1)
 194     {
 195       if (rets == -1)
 196         printf ("mq_receive failed with: %m\n");
 197       else
 198         printf ("mq_receive returned %zd != 1\n", rets);
 199       result = 1;
 200     }
 201   else if (prio != 5 || memcmp (buf, "k  ", 3) != 0)
 202     {
 203       printf ("mq_receive returned prio %u (2) buf \"%c%c%c\" (\"k  \")\n",
 204               prio, buf[0], buf[1], buf[2]);
 205       result = 1;
 206     }
 207
 208   if (mq_getattr (q3, &attr) != 0)
 209     {
 210       printf ("mq_getattr failed: %m\n");
 211       result = 1;
 212     }
 213
 214   if ((attr.mq_flags & O_NONBLOCK)
 215       || attr.mq_maxmsg != 2
 216       || attr.mq_msgsize != 2
 217       || attr.mq_curmsgs != 1)
 218     {
 219       printf ("mq_getattr returned unexpected { .mq_flags = %jd,\n"
 220               ".mq_maxmsg = %jd, .mq_msgsize = %jd, .mq_curmsgs = %jd }\n",
 221               (intmax_t) attr.mq_flags, (intmax_t) attr.mq_maxmsg,
 222               (intmax_t) attr.mq_msgsize, (intmax_t) attr.mq_curmsgs);
 223       result = 1;
 224     }
 225
 226   rets = mq_receive (q3, buf, 2, NULL);
 227   if (rets != 2)
 228     {
 229       if (rets == -1)
 230         printf ("mq_receive failed with: %m\n");
 231       else
 232         printf ("mq_receive returned %zd != 2\n", rets);
 233       result = 1;
 234     }
 235   else if (memcmp (buf, "jk ", 3) != 0)
 236     {
 237       printf ("mq_receive returned buf \"%c%c%c\" != \"jk \"\n",
 238               buf[0], buf[1], buf[2]);
 239       result = 1;
 240     }
 241
 242   if (clock_gettime (CLOCK_REALTIME, &ts) == 0)
 243     ++ts.tv_sec;
 244   else
 245     {
 246       ts.tv_sec = time (NULL) + 1;
 247       ts.tv_nsec = 0;
 248     }
 249
 250   if (mq_timedreceive (q2, buf, 2, NULL, &ts) != -1)
 251     {
 252       puts ("mq_timedreceive on empty queue unexpectedly succeeded");
 253       result = 1;
 254     }
 255   else if (errno != ETIMEDOUT)
 256     {
 257       printf ("mq_timedreceive on empty queue did not fail with "
 258               "ETIMEDOUT: %m\n");
 259       result = 1;
 260     }
 261
 262   if (mq_unlink (name) != 0)
 263     {
 264       printf ("mq_unlink failed: %m\n");
 265       result = 1;
 266     }
 267
 268   if (mq_close (q) != 0)
 269     {
 270       printf ("mq_close failed: %m\n");
 271       result = 1;
 272     }
 273
 274   if (mq_close (q2) != 0)
 275     {
 276       printf ("mq_close failed: %m\n");
 277       result = 1;
 278     }
 279
 280   if (mq_close (q3) != 0)
 281     {
 282       printf ("mq_close failed: %m\n");
 283       result = 1;
 284     }
 285
 286   return result;
 287 }
 288
 289 #include "../test-skeleton.c"