source: rtems/c/src/exec/posix/src/mqueueclose.c @ e1786ee3

4.104.114.84.95
Last change on this file since e1786ee3 was e1786ee3, checked in by Jennifer Averett <Jennifer.Averett@…>, on Dec 23, 1999 at 10:05:25 PM

+ Fixed errno response to match the POSIX manual.

  • Property mode set to 100644
File size: 1.6 KB
Line 
1/*
2 *  NOTE:  The structure of the routines is identical to that of POSIX
3 *         Message_queues to leave the option of having unnamed message
4 *         queues at a future date.  They are currently not part of the
5 *         POSIX standard but unnamed message_queues are.  This is also
6 *         the reason for the apparently unnecessary tracking of
7 *         the process_shared attribute.  [In addition to the fact that
8 *         it would be trivial to add pshared to the mq_attr structure
9 *         and have process private message queues.]
10 *
11 *         This code ignores the O_RDONLY/O_WRONLY/O_RDWR flag at open
12 *         time.
13 *
14 *  $Id$
15 */
16
17#include <stdarg.h>
18
19#include <pthread.h>
20#include <limits.h>
21#include <errno.h>
22#include <fcntl.h>
23#include <mqueue.h>
24
25#include <rtems/system.h>
26#include <rtems/score/watchdog.h>
27#include <rtems/posix/seterr.h>
28#include <rtems/posix/mqueue.h>
29#include <rtems/posix/time.h>
30
31/*
32 *
33 *  15.2.2 Close a Message Queue, P1003.1b-1993, p. 275
34 */
35
36int mq_close(
37  mqd_t  mqdes
38)
39{
40  register POSIX_Message_queue_Control *the_mq;
41  Objects_Locations                     location;
42 
43  the_mq = _POSIX_Message_queue_Get( mqdes, &location );
44  switch ( location ) {
45    case OBJECTS_ERROR:
46      set_errno_and_return_minus_one( EBADF );
47    case OBJECTS_REMOTE:
48      _Thread_Dispatch();
49      return POSIX_MP_NOT_IMPLEMENTED();
50      set_errno_and_return_minus_one( EINVAL );
51    case OBJECTS_LOCAL:
52      the_mq->open_count -= 1;
53      _POSIX_Message_queue_Delete( the_mq );
54      _Thread_Enable_dispatch();
55      return 0;
56  }
57  return POSIX_BOTTOM_REACHED();
58}
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