text: /*
   * Copyright (c) 2003, Intel Corporation. All rights reserved.
   * Created by:  julie.n.fleischer REMOVE-THIS AT intel DOT com
   * This file is licensed under the GPL license.  For the full content
   * of this license, see the COPYING file at the top level of this
   * source tree.
   */
  
  /*
   * Test that mq_open() does not add messages to the queue or remove
   * messages from the queue.
   *
   * Test using mq_send and mq_receive:
   * - Call mq_open() for non-blocking queue
   * - Verify mq_receive() fails (because nothing should be in the queue yet)
   * - Call mq_send() to put something in the queue
   * - Call mq_open() again for non-blocking queue
   * - Verify mq_receive() now succeeded (because the sent message should
   *   still be in the queue).
   *
   *   3/13/03 - Added fix from Gregoire Pichon for specifying an attr
   *             with a mq_maxmsg >= BUFFER.
   */
  
  #include <stdio.h>
  #include <mqueue.h>
  #include <fcntl.h>
  #include <sys/stat.h>
  #include <sys/types.h>
  #include <unistd.h>
  #include <string.h>
  #include "posixtest.h"
  
  #define NAMESIZE 50
  #define MSGSTR "0123456789"
  #define BUFFER 40
  
  int main()
  {
          char qname[NAMESIZE], msgrcd[BUFFER];
          const char *msgptr = MSGSTR;
          mqd_t queue;
  	struct mq_attr attr;
  	int failure=0;
  	unsigned pri;
  
          sprintf(qname, "/mq_open_19-1_%d", getpid());
  
  	attr.mq_msgsize = BUFFER;
  	attr.mq_maxmsg = BUFFER;
  
          queue = mq_open(qname, O_CREAT |O_RDWR|O_NONBLOCK, 
  			S_IRUSR | S_IWUSR, &attr);
          if (queue == (mqd_t)-1) {
                  perror("mq_open() did not return success");
  		printf("Test UNRESOLVED\n");
                  return PTS_UNRESOLVED;
          }
  
          if (mq_receive(queue, msgrcd, BUFFER, &pri) != -1) {
  		printf("mq_receive() succeded\n");
  		printf("mq_open() may have placed a message in the queue\n");
  		failure=1;
  	}
  
          if (mq_send(queue, msgptr, strlen(msgptr), 1) == -1) {
                  perror("mq_send() did not return success");
  		printf("Test UNRESOLVED\n");
  		/* close queue and exit */
  		mq_close(queue);
  		mq_unlink(qname);
                  return PTS_UNRESOLVED;
          }
  
          queue = mq_open(qname, O_RDWR|O_NONBLOCK, S_IRUSR | S_IWUSR, NULL);
          if (queue == (mqd_t)-1) {
                  perror("mq_open() second time did not return success");
  		printf("Test UNRESOLVED\n");
  		/* close queue and exit */
  		mq_close(queue);
  		mq_unlink(qname);
                  return PTS_UNRESOLVED;
          }
  
          if (mq_receive(queue, msgrcd, BUFFER, &pri) == -1) {
  		perror("mq_receive() failed");
  		printf("mq_open() may have removed a msg from the queue\n");
  		failure=1;
  	}
  
  	mq_close(queue);
  	mq_unlink(qname);
  
  	if (failure==1) {
  		printf("Test FAILED\n");
  		return PTS_FAIL;
  	}
  
          printf("Test PASSED\n");
          return PTS_PASS;
  }
  
  