about summary refs log tree commit diff
path: root/rt/tst-mqueue1.c
blob: 6338c4de0a3864bdf3f8fe3046a3be9638c24f4d (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
/* Test message queue passing.
   Copyright (C) 2004-2021 Free Software Foundation, Inc.
   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, see
   <https://www.gnu.org/licenses/>.  */

#include <errno.h>
#include <fcntl.h>
#include <mqueue.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/wait.h>
#include <time.h>
#include <unistd.h>
#include <stdint.h>
#include "tst-mqueue.h"

static int
intcmp (const void *a, const void *b)
{
  if (*(unsigned char *)a < *(unsigned char *)b)
    return 1;
  if (*(unsigned char *)a > *(unsigned char *)b)
    return -1;
  return 0;
}

static int
check_attrs (struct mq_attr *attr, int nonblock, long cnt)
{
  int result = 0;

  if (attr->mq_maxmsg != 10 || attr->mq_msgsize != 1)
    {
      printf ("attributes don't match those passed to mq_open\n"
	      "mq_maxmsg %jd, mq_msgsize %jd\n",
	      (intmax_t) attr->mq_maxmsg, (intmax_t) attr->mq_msgsize);
      result = 1;
    }

  if ((attr->mq_flags & O_NONBLOCK) != nonblock)
    {
      printf ("mq_flags %jx != %x\n",
	      (intmax_t) (attr->mq_flags & O_NONBLOCK), nonblock);
      result = 1;
    }

  if (attr->mq_curmsgs != cnt)
    {
      printf ("mq_curmsgs %jd != %ld\n", (intmax_t) attr->mq_curmsgs, cnt);
      result = 1;
    }

  return result;
}

static int
do_one_test (mqd_t q, const char *name, int nonblock)
{
  int result = 0;

  unsigned char v []
    = { 0x32, 0x62, 0x22, 0x31, 0x11, 0x73, 0x61, 0x21, 0x72, 0x71, 0x81 };

  struct mq_attr attr;
  memset (&attr, 0xaa, sizeof (attr));
  if (mq_getattr (q, &attr) != 0)
    {
      printf ("mq_getattr failed: %m\n");
      result = 1;
    }
  else
    result |= check_attrs (&attr, nonblock, 0);

  if (mq_receive (q, (char *) &v[0], 1, NULL) != -1)
    {
      puts ("mq_receive on O_WRONLY mqd_t unexpectedly succeeded");
      result = 1;
    }
  else if (errno != EBADF)
    {
      printf ("mq_receive on O_WRONLY mqd_t did not fail with EBADF: %m\n");
      result = 1;
    }

  struct timespec ts;
  if (clock_gettime (CLOCK_REALTIME, &ts) == 0)
    --ts.tv_sec;
  else
    {
      ts.tv_sec = time (NULL) - 1;
      ts.tv_nsec = 0;
    }

  int ret;
  for (int i = 0; i < 10; ++i)
    {
      if (i & 1)
	ret = mq_send (q, (char *) &v[i], 1, v[i] >> 4);
      else
	ret = mq_timedsend (q, (char *) &v[i], 1, v[i] >> 4, &ts);

      if (ret)
	{
	  printf ("mq_%ssend failed: %m\n", (i & 1) ? "" : "timed");
	  result = 1;
	}
    }

  ret = mq_timedsend (q, (char *) &v[10], 1, 8, &ts);
  if (ret != -1)
    {
      puts ("mq_timedsend on full queue did not fail");
      result = 1;
    }
  else if (errno != (nonblock ? EAGAIN : ETIMEDOUT))
    {
      printf ("mq_timedsend on full queue did not fail with %s: %m\n",
	      nonblock ? "EAGAIN" : "ETIMEDOUT");
      result = 1;
    }

  if (nonblock)
    {
      ret = mq_send (q, (char *) &v[10], 1, 8);
      if (ret != -1)
	{
	  puts ("mq_send on full non-blocking queue did not fail");
	  result = 1;
	}
      else if (errno != EAGAIN)
	{
	  printf ("mq_send on full non-blocking queue did not fail"
		  "with EAGAIN: %m\n");
	  result = 1;
	}
    }

  memset (&attr, 0xaa, sizeof (attr));
  if (mq_getattr (q, &attr) != 0)
    {
      printf ("mq_getattr failed: %m\n");
      result = 1;
    }
  else
    result |= check_attrs (&attr, nonblock, 10);

  pid_t pid = fork ();
  if (pid == -1)
    {
      printf ("fork failed: %m\n");
      result = 1;
    }
  else if (pid == 0)
    {
      result = 0;

      if (mq_close (q) != 0)
	{
	  printf ("mq_close in child failed: %m\n");
	  result = 1;
	}

      q = mq_open (name, O_RDONLY | nonblock);
      if (q == (mqd_t) -1)
        {
	  printf ("mq_open in child failed: %m\n");
	  exit (1);
        }

      memset (&attr, 0xaa, sizeof (attr));
      if (mq_getattr (q, &attr) != 0)
	{
	  printf ("mq_getattr failed: %m\n");
	  result = 1;
	}
      else
	result |= check_attrs (&attr, nonblock, 10);

      unsigned char vr[11] = { };
      unsigned int prio;
      ssize_t rets;

      if (mq_send (q, (char *) &v[0], 1, 1) != -1)
	{
	  puts ("mq_send on O_RDONLY mqd_t unexpectedly succeeded");
	  result = 1;
	}
      else if (errno != EBADF)
	{
	  printf ("mq_send on O_WRONLY mqd_t did not fail with EBADF: %m\n");
	  result = 1;
	}

      for (int i = 0; i < 10; ++i)
	{
	  if (i & 1)
	    rets = mq_receive (q, (char *) &vr[i], 1, &prio);
	  else
	    rets = mq_timedreceive (q, (char *) &vr[i], 1, &prio, &ts);

	  if (rets != 1)
	    {
	      if (rets == -1)
		printf ("mq_%sreceive failed: %m\n", (i & 1) ? "" : "timed");
	      else
		printf ("mq_%sreceive returned %zd != 1\n",
			(i & 1) ? "" : "timed", rets);
	      result = 1;
	    }
	  else if (prio != (unsigned int) vr[i] >> 4)
	    {
	      printf ("unexpected priority %x for value %02x\n", prio,
		      vr[i]);
	      result = 1;
	    }
	}

      qsort (v, 10, 1, intcmp);
      if (memcmp (v, vr, 10) != 0)
	{
	  puts ("messages not received in expected order");
	  result = 1;
	}

      rets = mq_timedreceive (q, (char *) &vr[10], 1, &prio, &ts);
      if (rets != -1)
	{
	  puts ("mq_timedreceive on empty queue did not fail");
	  result = 1;
	}
      else if (errno != (nonblock ? EAGAIN : ETIMEDOUT))
	{
	  printf ("mq_timedreceive on empty queue did not fail with %s: %m\n",
		  nonblock ? "EAGAIN" : "ETIMEDOUT");
	  result = 1;
	}

      if (nonblock)
	{
	  ret = mq_receive (q, (char *) &vr[10], 1, &prio);
	  if (ret != -1)
	    {
	      puts ("mq_receive on empty non-blocking queue did not fail");
	      result = 1;
	    }
	  else if (errno != EAGAIN)
	    {
	      printf ("mq_receive on empty non-blocking queue did not fail"
		      "with EAGAIN: %m\n");
	      result = 1;
	    }
	}

      memset (&attr, 0xaa, sizeof (attr));
      if (mq_getattr (q, &attr) != 0)
	{
	  printf ("mq_getattr failed: %m\n");
	  result = 1;
	}
      else
	result |= check_attrs (&attr, nonblock, 0);

      if (mq_close (q) != 0)
	{
	  printf ("mq_close in child failed: %m\n");
	  result = 1;
	}

      exit (result);
    }

  int status;
  if (TEMP_FAILURE_RETRY (waitpid (pid, &status, 0)) != pid)
    {
      printf ("waitpid failed: %m\n");
      kill (pid, SIGKILL);
      result = 1;
    }
  else if (!WIFEXITED (status) || WEXITSTATUS (status))
    {
      printf ("child failed: %d\n", status);
      result = 1;
    }

  memset (&attr, 0xaa, sizeof (attr));
  if (mq_getattr (q, &attr) != 0)
    {
      printf ("mq_getattr failed: %m\n");
      result = 1;
    }
  else
    result |= check_attrs (&attr, nonblock, 0);

  return result;
}

#define TEST_FUNCTION do_test ()
static int
do_test (void)
{
  int result = 0;

  char name[sizeof "/tst-mqueue1-" + sizeof (pid_t) * 3];
  snprintf (name, sizeof (name), "/tst-mqueue1-%u", getpid ());

  struct mq_attr attr = { .mq_maxmsg = 10, .mq_msgsize = 1 };
  mqd_t q = mq_open (name, O_CREAT | O_EXCL | O_WRONLY, 0600, &attr);

  if (q == (mqd_t) -1)
    {
      printf ("mq_open failed with: %m\n");
      return result;
    }
  else
    add_temp_mq (name);

  result |= do_one_test (q, name, 0);

  mqd_t q2 = mq_open (name, O_WRONLY | O_NONBLOCK);
  if (q2 == (mqd_t) -1)
    {
      printf ("mq_open failed with: %m\n");
      q2 = q;
      result = 1;
    }
  else
    {
      if (mq_close (q) != 0)
	{
	  printf ("mq_close in parent failed: %m\n");
	  result = 1;
	}

      q = q2;
      result |= do_one_test (q, name, O_NONBLOCK);

      if (mq_getattr (q, &attr) != 0)
	{
	  printf ("mq_getattr failed: %m\n");
	  result = 1;
	}
      else
	{
	  attr.mq_flags ^= O_NONBLOCK;

	  struct mq_attr attr2;
	  memset (&attr2, 0x55, sizeof (attr2));
	  if (mq_setattr (q, &attr, &attr2) != 0)
	    {
	      printf ("mq_setattr failed: %m\n");
	      result = 1;
	    }
	  else if (attr.mq_flags != (attr2.mq_flags ^ O_NONBLOCK)
		   || attr.mq_maxmsg != attr2.mq_maxmsg
		   || attr.mq_msgsize != attr2.mq_msgsize
		   || attr.mq_curmsgs != 0
		   || attr2.mq_curmsgs != 0)
	    {
	      puts ("mq_setattr returned unexpected values in *omqstat");
	      result = 1;
	    }
	  else
	    {
	      result |= do_one_test (q, name, 0);

	      if (mq_setattr (q, &attr2, NULL) != 0)
		{
		  printf ("mq_setattr failed: %m\n");
		  result = 1;
		}
	      else
		result |= do_one_test (q, name, O_NONBLOCK);
	    }
	}
    }

  if (mq_unlink (name) != 0)
    {
      printf ("mq_unlink failed: %m\n");
      result = 1;
    }

  if (mq_close (q) != 0)
    {
      printf ("mq_close in parent failed: %m\n");
      result = 1;
    }

  if (mq_close (q) != -1)
    {
      puts ("second mq_close did not fail");
      result = 1;
    }
  else if (errno != EBADF)
    {
      printf ("second mq_close did not fail with EBADF: %m\n");
      result = 1;
    }

  return result;
}

#include "../test-skeleton.c"