rt/tst-mqueue4.c

   1 /* Test message queue passing.
   2    Copyright (C) 2004-2018 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 <stdint.h>
  27 #include <stdlib.h>
  28 #include <string.h>
  29 #include <sys/time.h>
  30 #include <sys/wait.h>
  31 #include <time.h>
  32 #include <unistd.h>
  33 #include "tst-mqueue.h"
  34
  35 #define TIMEOUT 4
  36 #define TEST_FUNCTION do_test ()
  37 static int
  38 do_test (void)
  39 {
  40   int result = 0;
  41
  42   char name[sizeof "/tst-mqueue4-" + sizeof (pid_t) * 3 + NAME_MAX];
  43   char *p;
  44   p = name + snprintf (name, sizeof (name), "/tst-mqueue4-%u", getpid ());
  45   struct mq_attr attr = { .mq_maxmsg = 2, .mq_msgsize = 2 };
  46   mqd_t q = mq_open (name, O_CREAT | O_EXCL | O_RDWR, 0600, &attr);
  47
  48   if (q == (mqd_t) -1)
  49     {
  50       printf ("mq_open failed with: %m\n");
  51       return result;
  52     }
  53   else
  54     add_temp_mq (name);
  55
  56   *p = '.';
  57   memset (p + 1, 'x', NAME_MAX + 1 - (p - name));
  58   name[NAME_MAX + 1] = '\0';
  59
  60   mqd_t q2 = mq_open (name, O_CREAT | O_EXCL | O_RDWR, 0600, &attr);
  61   if (q2 == (mqd_t) -1)
  62     {
  63       printf ("mq_open with NAME_MAX long name compoment failed with: %m\n");
  64       result = 1;
  65     }
  66
  67   if (mq_unlink (name) != 0)
  68     {
  69       printf ("mq_unlink failed: %m\n");
  70       result = 1;
  71     }
  72
  73   if (mq_close (q2) != 0)
  74     {
  75       printf ("mq_close failed: %m\n");
  76       result = 1;
  77     }
  78
  79   name[NAME_MAX + 1] = 'x';
  80   name[NAME_MAX + 2] = '\0';
  81   q2 = mq_open (name, O_CREAT | O_EXCL | O_RDWR, 0600, &attr);
  82   if (q2 != (mqd_t) -1)
  83     {
  84       puts ("mq_open with too long name component unexpectedly succeeded");
  85       mq_unlink (name);
  86       mq_close (q2);
  87       result = 1;
  88     }
  89   else if (errno != ENAMETOOLONG)
  90     {
  91       printf ("mq_open with too long name component did not fail with "
  92               "ENAMETOOLONG: %m\n");
  93       result = 1;
  94     }
  95
  96   if (mq_unlink (name) == 0)
  97     {
  98       puts ("mq_unlink with too long name component unexpectedly succeeded");
  99       result = 1;
 100     }
 101   else if (errno != ENAMETOOLONG)
 102     {
 103       printf ("mq_unlink with too long name component did not fail with "
 104               "ENAMETOOLONG: %m\n");
 105       result = 1;
 106     }
 107
 108   *p = '\0';
 109   attr.mq_maxmsg = 1;
 110   attr.mq_msgsize = 3;
 111   q2 = mq_open (name, O_CREAT | O_RDWR, 0600, &attr);
 112   if (q2 == (mqd_t) -1)
 113     {
 114       printf ("mq_open without O_EXCL failed with %m\n");
 115       result = 1;
 116     }
 117
 118   char buf[3];
 119   strcpy (buf, "jk");
 120   if (mq_send (q, buf, 2, 4) != 0)
 121     {
 122       printf ("mq_send failed: %m\n");
 123       result = 1;
 124     }
 125
 126   if (mq_send (q, buf + 1, 1, 5) != 0)
 127     {
 128       printf ("mq_send failed: %m\n");
 129       result = 1;
 130     }
 131
 132   if (mq_getattr (q2, &attr) != 0)
 133     {
 134       printf ("mq_getattr failed: %m\n");
 135       result = 1;
 136     }
 137
 138   if ((attr.mq_flags & O_NONBLOCK)
 139       || attr.mq_maxmsg != 2
 140       || attr.mq_msgsize != 2
 141       || attr.mq_curmsgs != 2)
 142     {
 143       printf ("mq_getattr returned unexpected { .mq_flags = %jd,\n"
 144               ".mq_maxmsg = %jd, .mq_msgsize = %jd, .mq_curmsgs = %jd }\n",
 145               (intmax_t) attr.mq_flags, (intmax_t) attr.mq_maxmsg,
 146               (intmax_t) attr.mq_msgsize, (intmax_t) attr.mq_curmsgs);
 147       result = 1;
 148     }
 149
 150   struct timespec ts;
 151   if (clock_gettime (CLOCK_REALTIME, &ts) == 0)
 152     ++ts.tv_sec;
 153   else
 154     {
 155       ts.tv_sec = time (NULL) + 1;
 156       ts.tv_nsec = 0;
 157     }
 158
 159   if (mq_timedsend (q2, buf, 1, 1, &ts) == 0)
 160     {
 161       puts ("mq_timedsend unexpectedly succeeded");
 162       result = 1;
 163     }
 164   else if (errno != ETIMEDOUT)
 165     {
 166       printf ("mq_timedsend did not fail with ETIMEDOUT: %m\n");
 167       result = 1;
 168     }
 169
 170   if (mq_close (q2) != 0)
 171     {
 172       printf ("mq_close failed: %m\n");
 173       result = 1;
 174     }
 175
 176   q2 = mq_open (name, O_RDONLY, 0600);
 177   if (q2 == (mqd_t) -1)
 178     {
 179       printf ("mq_open without O_CREAT failed with %m\n");
 180       result = 1;
 181     }
 182
 183   mqd_t q3 = mq_open (name, O_RDONLY, 0600);
 184   if (q3 == (mqd_t) -1)
 185     {
 186       printf ("mq_open without O_CREAT failed with %m\n");
 187       result = 1;
 188     }
 189
 190   memset (buf, ' ', sizeof (buf));
 191
 192   unsigned int prio;
 193   ssize_t rets = mq_receive (q2, buf, 2, &prio);
 194   if (rets != 1)
 195     {
 196       if (rets == -1)
 197         printf ("mq_receive failed with: %m\n");
 198       else
 199         printf ("mq_receive returned %zd != 1\n", rets);
 200       result = 1;
 201     }
 202   else if (prio != 5 || memcmp (buf, "k  ", 3) != 0)
 203     {
 204       printf ("mq_receive returned prio %u (2) buf \"%c%c%c\" (\"k  \")\n",
 205               prio, buf[0], buf[1], buf[2]);
 206       result = 1;
 207     }
 208
 209   if (mq_getattr (q3, &attr) != 0)
 210     {
 211       printf ("mq_getattr failed: %m\n");
 212       result = 1;
 213     }
 214
 215   if ((attr.mq_flags & O_NONBLOCK)
 216       || attr.mq_maxmsg != 2
 217       || attr.mq_msgsize != 2
 218       || attr.mq_curmsgs != 1)
 219     {
 220       printf ("mq_getattr returned unexpected { .mq_flags = %jd,\n"
 221               ".mq_maxmsg = %jd, .mq_msgsize = %jd, .mq_curmsgs = %jd }\n",
 222               (intmax_t) attr.mq_flags, (intmax_t) attr.mq_maxmsg,
 223               (intmax_t) attr.mq_msgsize, (intmax_t) attr.mq_curmsgs);
 224       result = 1;
 225     }
 226
 227   rets = mq_receive (q3, buf, 2, NULL);
 228   if (rets != 2)
 229     {
 230       if (rets == -1)
 231         printf ("mq_receive failed with: %m\n");
 232       else
 233         printf ("mq_receive returned %zd != 2\n", rets);
 234       result = 1;
 235     }
 236   else if (memcmp (buf, "jk ", 3) != 0)
 237     {
 238       printf ("mq_receive returned buf \"%c%c%c\" != \"jk \"\n",
 239               buf[0], buf[1], buf[2]);
 240       result = 1;
 241     }
 242
 243   if (clock_gettime (CLOCK_REALTIME, &ts) == 0)
 244     ++ts.tv_sec;
 245   else
 246     {
 247       ts.tv_sec = time (NULL) + 1;
 248       ts.tv_nsec = 0;
 249     }
 250
 251   if (mq_timedreceive (q2, buf, 2, NULL, &ts) != -1)
 252     {
 253       puts ("mq_timedreceive on empty queue unexpectedly succeeded");
 254       result = 1;
 255     }
 256   else if (errno != ETIMEDOUT)
 257     {
 258       printf ("mq_timedreceive on empty queue did not fail with "
 259               "ETIMEDOUT: %m\n");
 260       result = 1;
 261     }
 262
 263   if (mq_unlink (name) != 0)
 264     {
 265       printf ("mq_unlink failed: %m\n");
 266       result = 1;
 267     }
 268
 269   if (mq_close (q) != 0)
 270     {
 271       printf ("mq_close failed: %m\n");
 272       result = 1;
 273     }
 274
 275   if (mq_close (q2) != 0)
 276     {
 277       printf ("mq_close failed: %m\n");
 278       result = 1;
 279     }
 280
 281   if (mq_close (q3) != 0)
 282     {
 283       printf ("mq_close failed: %m\n");
 284       result = 1;
 285     }
 286
 287   return result;
 288 }
 289
 290 #include "../test-skeleton.c"