/* Test message queue passing.
Copyright (C) 2004-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Jakub Jelinek <jakub@redhat.com>, 2004.
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
<http://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"