rt/tst-mqueue2.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 <signal.h>
  24 #include <stdio.h>
  25 #include <stdlib.h>
  26 #include <string.h>
  27 #include <sys/time.h>
  28 #include <sys/wait.h>
  29 #include <time.h>
  30 #include <unistd.h>
  31 #include "tst-mqueue.h"
  32
  33 static void
  34 alrm_handler (int sig)
  35 {
  36 }
  37
  38 #define TIMEOUT 10
  39 #define TEST_FUNCTION do_test ()
  40 static int
  41 do_test (void)
  42 {
  43   int result = 0;
  44
  45   char name[sizeof "/tst-mqueue2-" + sizeof (pid_t) * 3];
  46   snprintf (name, sizeof (name), "/tst-mqueue2-%u", getpid ());
  47
  48   struct mq_attr attr = { .mq_maxmsg = 2, .mq_msgsize = 2 };
  49   mqd_t q = mq_open (name, O_CREAT | O_EXCL | O_RDWR, 0600, &attr);
  50
  51   if (q == (mqd_t) -1)
  52     {
  53       printf ("mq_open failed with: %m\n");
  54       return result;
  55     }
  56   else
  57     add_temp_mq (name);
  58
  59   mqd_t q2 = mq_open (name, O_CREAT | O_EXCL | O_RDWR, 0600, &attr);
  60   if (q2 != (mqd_t) -1)
  61     {
  62       puts ("mq_open with O_EXCL unexpectedly succeeded");
  63       result = 1;
  64     }
  65   else if (errno != EEXIST)
  66     {
  67       printf ("mq_open did not fail with EEXIST: %m\n");
  68       result = 1;
  69     }
  70
  71   char name2[sizeof "/tst-mqueue2-2-" + sizeof (pid_t) * 3];
  72   snprintf (name2, sizeof (name2), "/tst-mqueue2-2-%u", getpid ());
  73
  74   attr.mq_maxmsg = -2;
  75   q2 = mq_open (name2, O_CREAT | O_EXCL | O_RDWR, 0600, &attr);
  76   if (q2 != (mqd_t) -1)
  77     {
  78       puts ("mq_open with invalid mq_maxmsg unexpectedly succeeded");
  79       add_temp_mq (name2);
  80       result = 1;
  81     }
  82   else if (errno != EINVAL)
  83     {
  84       printf ("mq_open with invalid mq_maxmsg did not fail with "
  85               "EINVAL: %m\n");
  86       result = 1;
  87     }
  88
  89   attr.mq_maxmsg = 2;
  90   attr.mq_msgsize = -56;
  91   q2 = mq_open (name2, O_CREAT | O_EXCL | O_RDWR, 0600, &attr);
  92   if (q2 != (mqd_t) -1)
  93     {
  94       puts ("mq_open with invalid mq_msgsize unexpectedly succeeded");
  95       add_temp_mq (name2);
  96       result = 1;
  97     }
  98   else if (errno != EINVAL)
  99     {
 100       printf ("mq_open with invalid mq_msgsize did not fail with "
 101               "EINVAL: %m\n");
 102       result = 1;
 103     }
 104
 105   char buf[3];
 106   struct timespec ts;
 107   if (clock_gettime (CLOCK_REALTIME, &ts) == 0)
 108     ts.tv_sec += 10;
 109   else
 110     {
 111       ts.tv_sec = time (NULL) + 10;
 112       ts.tv_nsec = 0;
 113     }
 114
 115   if (mq_timedreceive (q, buf, 1, NULL, &ts) == 0)
 116     {
 117       puts ("mq_timedreceive with too small msg_len did not fail");
 118       result = 1;
 119     }
 120   else if (errno != EMSGSIZE)
 121     {
 122       printf ("mq_timedreceive with too small msg_len did not fail with "
 123               "EMSGSIZE: %m\n");
 124       result = 1;
 125     }
 126
 127   ts.tv_nsec = -1;
 128   if (mq_timedreceive (q, buf, 2, NULL, &ts) == 0)
 129     {
 130       puts ("mq_timedreceive with negative tv_nsec did not fail");
 131       result = 1;
 132     }
 133   else if (errno != EINVAL)
 134     {
 135       printf ("mq_timedreceive with negative tv_nsec did not fail with "
 136               "EINVAL: %m\n");
 137       result = 1;
 138     }
 139
 140   ts.tv_nsec = 1000000000;
 141   if (mq_timedreceive (q, buf, 2, NULL, &ts) == 0)
 142     {
 143       puts ("mq_timedreceive with tv_nsec >= 1000000000 did not fail");
 144       result = 1;
 145     }
 146   else if (errno != EINVAL)
 147     {
 148       printf ("mq_timedreceive with tv_nsec >= 1000000000 did not fail with "
 149               "EINVAL: %m\n");
 150       result = 1;
 151     }
 152
 153   struct sigaction sa = { .sa_handler = alrm_handler, .sa_flags = 0 };
 154   sigemptyset (&sa.sa_mask);
 155   sigaction (SIGALRM, &sa, NULL);
 156
 157   struct itimerval it = { .it_value = { .tv_sec = 1 } };
 158   setitimer (ITIMER_REAL, &it, NULL);
 159
 160   if (mq_receive (q, buf, 2, NULL) == 0)
 161     {
 162       puts ("mq_receive on empty queue did not block");
 163       result = 1;
 164     }
 165   else if (errno != EINTR)
 166     {
 167       printf ("mq_receive on empty queue did not fail with EINTR: %m\n");
 168       result = 1;
 169     }
 170
 171   setitimer (ITIMER_REAL, &it, NULL);
 172
 173   ts.tv_nsec = 0;
 174   if (mq_timedreceive (q, buf, 2, NULL, &ts) == 0)
 175     {
 176       puts ("mq_timedreceive on empty queue did not block");
 177       result = 1;
 178     }
 179   else if (errno != EINTR)
 180     {
 181       printf ("mq_timedreceive on empty queue did not fail with EINTR: %m\n");
 182       result = 1;
 183     }
 184
 185   buf[0] = '6';
 186   buf[1] = '7';
 187   if (mq_send (q, buf, 2, 3) != 0
 188       || (buf[0] = '8', mq_send (q, buf, 1, 4) != 0))
 189     {
 190       printf ("mq_send failed: %m\n");
 191       result = 1;
 192     }
 193
 194   memset (buf, ' ', sizeof (buf));
 195
 196   unsigned int prio;
 197   ssize_t rets = mq_receive (q, buf, 3, &prio);
 198   if (rets != 1)
 199     {
 200       if (rets == -1)
 201         printf ("mq_receive failed: %m\n");
 202       else
 203         printf ("mq_receive returned %zd != 1\n", rets);
 204       result = 1;
 205     }
 206   else if (prio != 4 || memcmp (buf, "8  ", 3) != 0)
 207     {
 208       printf ("mq_receive prio %u (4) buf \"%c%c%c\" (\"8  \")\n",
 209               prio, buf[0], buf[1], buf[2]);
 210       result = 1;
 211     }
 212
 213   rets = mq_receive (q, buf, 2, NULL);
 214   if (rets != 2)
 215     {
 216       if (rets == -1)
 217         printf ("mq_receive failed: %m\n");
 218       else
 219         printf ("mq_receive returned %zd != 2\n", rets);
 220       result = 1;
 221     }
 222   else if (memcmp (buf, "67 ", 3) != 0)
 223     {
 224       printf ("mq_receive buf \"%c%c%c\" != \"67 \"\n",
 225               buf[0], buf[1], buf[2]);
 226       result = 1;
 227     }
 228
 229   buf[0] = '2';
 230   buf[1] = '1';
 231   if (clock_gettime (CLOCK_REALTIME, &ts) != 0)
 232     ts.tv_sec = time (NULL);
 233   ts.tv_nsec = -1000000001;
 234   if ((mq_timedsend (q, buf, 2, 5, &ts) != 0
 235        && (errno != EINVAL || mq_send (q, buf, 2, 5) != 0))
 236       || (buf[0] = '3', ts.tv_nsec = -ts.tv_nsec,
 237           (mq_timedsend (q, buf, 1, 4, &ts) != 0
 238            && (errno != EINVAL || mq_send (q, buf, 1, 4) != 0))))
 239     {
 240       printf ("mq_timedsend failed: %m\n");
 241       result = 1;
 242     }
 243
 244   buf[0] = '-';
 245   ts.tv_nsec = 1000000001;
 246   if (mq_timedsend (q, buf, 1, 6, &ts) == 0)
 247     {
 248       puts ("mq_timedsend with tv_nsec >= 1000000000 did not fail");
 249       result = 1;
 250     }
 251   else if (errno != EINVAL)
 252     {
 253       printf ("mq_timedsend with tv_nsec >= 1000000000 did not fail with "
 254               "EINVAL: %m\n");
 255       result = 1;
 256     }
 257
 258   ts.tv_nsec = -2;
 259   if (mq_timedsend (q, buf, 1, 6, &ts) == 0)
 260     {
 261       puts ("mq_timedsend with negative tv_nsec did not fail");
 262       result = 1;
 263     }
 264   else if (errno != EINVAL)
 265     {
 266       printf ("mq_timedsend with megatove tv_nsec did not fail with "
 267               "EINVAL: %m\n");
 268       result = 1;
 269     }
 270
 271   setitimer (ITIMER_REAL, &it, NULL);
 272
 273   if (mq_send (q, buf, 2, 8) == 0)
 274     {
 275       puts ("mq_send on full queue did not block");
 276       result = 1;
 277     }
 278   else if (errno != EINTR)
 279     {
 280       printf ("mq_send on full queue did not fail with EINTR: %m\n");
 281       result = 1;
 282     }
 283
 284   setitimer (ITIMER_REAL, &it, NULL);
 285
 286   ts.tv_sec += 10;
 287   ts.tv_nsec = 0;
 288   if (mq_timedsend (q, buf, 2, 7, &ts) == 0)
 289     {
 290       puts ("mq_timedsend on full queue did not block");
 291       result = 1;
 292     }
 293   else if (errno != EINTR)
 294     {
 295       printf ("mq_timedsend on full queue did not fail with EINTR: %m\n");
 296       result = 1;
 297     }
 298
 299   memset (buf, ' ', sizeof (buf));
 300
 301   if (clock_gettime (CLOCK_REALTIME, &ts) != 0)
 302     ts.tv_sec = time (NULL);
 303   ts.tv_nsec = -1000000001;
 304   rets = mq_timedreceive (q, buf, 2, &prio, &ts);
 305   if (rets == -1 && errno == EINVAL)
 306     rets = mq_receive (q, buf, 2, &prio);
 307   if (rets != 2)
 308     {
 309       if (rets == -1)
 310         printf ("mq_timedreceive failed: %m\n");
 311       else
 312         printf ("mq_timedreceive returned %zd != 2\n", rets);
 313       result = 1;
 314     }
 315   else if (prio != 5 || memcmp (buf, "21 ", 3) != 0)
 316     {
 317       printf ("mq_timedreceive prio %u (5) buf \"%c%c%c\" (\"21 \")\n",
 318               prio, buf[0], buf[1], buf[2]);
 319       result = 1;
 320     }
 321
 322   if (mq_receive (q, buf, 1, NULL) == 0)
 323     {
 324       puts ("mq_receive with too small msg_len did not fail");
 325       result = 1;
 326     }
 327   else if (errno != EMSGSIZE)
 328     {
 329       printf ("mq_receive with too small msg_len did not fail with "
 330               "EMSGSIZE: %m\n");
 331       result = 1;
 332     }
 333
 334   ts.tv_nsec = -ts.tv_nsec;
 335   rets = mq_timedreceive (q, buf, 2, NULL, &ts);
 336   if (rets == -1 && errno == EINVAL)
 337     rets = mq_receive (q, buf, 2, NULL);
 338   if (rets != 1)
 339     {
 340       if (rets == -1)
 341         printf ("mq_timedreceive failed: %m\n");
 342       else
 343         printf ("mq_timedreceive returned %zd != 1\n", rets);
 344       result = 1;
 345     }
 346   else if (memcmp (buf, "31 ", 3) != 0)
 347     {
 348       printf ("mq_timedreceive buf \"%c%c%c\" != \"31 \"\n",
 349               buf[0], buf[1], buf[2]);
 350       result = 1;
 351     }
 352
 353   if (mq_send (q, "", 0, 2) != 0)
 354     {
 355       printf ("mq_send with msg_len 0 failed: %m\n");
 356       result = 1;
 357     }
 358
 359   rets = mq_receive (q, buf, 2, &prio);
 360   if (rets)
 361     {
 362       if (rets == -1)
 363         printf ("mq_receive failed: %m\n");
 364       else
 365         printf ("mq_receive returned %zd != 0\n", rets);
 366       result = 1;
 367     }
 368
 369   long mq_prio_max = sysconf (_SC_MQ_PRIO_MAX);
 370   if (mq_prio_max > 0 && (unsigned int) mq_prio_max == mq_prio_max)
 371     {
 372       if (mq_send (q, buf, 1, mq_prio_max) == 0)
 373         {
 374           puts ("mq_send with MQ_PRIO_MAX priority unpexpectedly succeeded");
 375           result = 1;
 376         }
 377       else if (errno != EINVAL)
 378         {
 379           printf ("mq_send with MQ_PRIO_MAX priority did not fail with "
 380                   "EINVAL: %m\n");
 381           result = 1;
 382         }
 383
 384       if (mq_send (q, buf, 1, mq_prio_max - 1) != 0)
 385         {
 386           printf ("mq_send with MQ_PRIO_MAX-1 priority failed: %m\n");
 387           result = 1;
 388         }
 389     }
 390
 391   if (mq_unlink (name) != 0)
 392     {
 393       printf ("mq_unlink failed: %m\n");
 394       result = 1;
 395     }
 396
 397   q2 = mq_open (name, O_RDWR);
 398   if (q2 != (mqd_t) -1)
 399     {
 400       printf ("mq_open of unlinked %s without O_CREAT unexpectedly"
 401               "succeeded\n", name);
 402       result = 1;
 403     }
 404   else if (errno != ENOENT)
 405     {
 406       printf ("mq_open of unlinked %s without O_CREAT did not fail with "
 407               "ENOENT: %m\n", name);
 408       result = 1;
 409     }
 410
 411   if (mq_close (q) != 0)
 412     {
 413       printf ("mq_close in parent failed: %m\n");
 414       result = 1;
 415     }
 416
 417   if (mq_receive (q, buf, 2, NULL) == 0)
 418     {
 419       puts ("mq_receive on invalid mqd_t did not fail");
 420       result = 1;
 421     }
 422   else if (errno != EBADF)
 423     {
 424       printf ("mq_receive on invalid mqd_t did not fail with EBADF: %m\n");
 425       result = 1;
 426     }
 427
 428   if (mq_send (q, buf, 1, 2) == 0)
 429     {
 430       puts ("mq_send on invalid mqd_t did not fail");
 431       result = 1;
 432     }
 433   else if (errno != EBADF)
 434     {
 435       printf ("mq_send on invalid mqd_t did not fail with EBADF: %m\n");
 436       result = 1;
 437     }
 438
 439   if (mq_getattr (q, &attr) == 0)
 440     {
 441       puts ("mq_getattr on invalid mqd_t did not fail");
 442       result = 1;
 443     }
 444   else if (errno != EBADF)
 445     {
 446       printf ("mq_getattr on invalid mqd_t did not fail with EBADF: %m\n");
 447       result = 1;
 448     }
 449
 450   memset (&attr, 0, sizeof (attr));
 451   if (mq_setattr (q, &attr, NULL) == 0)
 452     {
 453       puts ("mq_setattr on invalid mqd_t did not fail");
 454       result = 1;
 455     }
 456   else if (errno != EBADF)
 457     {
 458       printf ("mq_setattr on invalid mqd_t did not fail with EBADF: %m\n");
 459       result = 1;
 460     }
 461
 462   if (mq_unlink ("/tst-mqueue2-which-should-never-exist") != -1)
 463     {
 464       puts ("mq_unlink of non-existant message queue unexpectedly succeeded");
 465       result = 1;
 466     }
 467   else if (errno != ENOENT)
 468     {
 469       printf ("mq_unlink of non-existant message queue did not fail with "
 470               "ENOENT: %m\n");
 471       result = 1;
 472     }
 473   return result;
 474 }
 475
 476 #include "../test-skeleton.c"