source: rtems/cpukit/posix/src/mqueueclose.c @ b8596d8

4.104.114.95
Last change on this file since b8596d8 was b8596d8, checked in by Joel Sherrill <joel.sherrill@…>, on 11/28/07 at 18:35:31

2007-11-28 Joel Sherrill <joel.sherrill@…>

  • posix/Makefile.am, posix/preinstall.am, posix/src/cancel.c, posix/src/conddestroy.c, posix/src/condinit.c, posix/src/condsignalsupp.c, posix/src/condwaitsupp.c, posix/src/mqueueclose.c, posix/src/mqueuecreatesupp.c, posix/src/mqueuedeletesupp.c, posix/src/mqueuegetattr.c, posix/src/mqueuenotify.c, posix/src/mqueuerecvsupp.c, posix/src/mqueuesendsupp.c, posix/src/mqueuesetattr.c, posix/src/mqueueunlink.c, posix/src/mutexattrdestroy.c, posix/src/mutexattrgetprioceiling.c, posix/src/mutexattrgetprotocol.c, posix/src/mutexattrgetpshared.c, posix/src/mutexattrinit.c, posix/src/mutexattrsetprioceiling.c, posix/src/mutexattrsetprotocol.c, posix/src/mutexattrsetpshared.c, posix/src/mutexdefaultattributes.c, posix/src/mutexdestroy.c, posix/src/mutexgetprioceiling.c, posix/src/mutexinit.c, posix/src/mutexlocksupp.c, posix/src/mutexsetprioceiling.c, posix/src/mutexunlock.c, posix/src/semaphorecreatesupp.c, posix/src/semaphoredeletesupp.c, posix/src/semaphorewaitsupp.c, posix/src/semclose.c, posix/src/semdestroy.c, posix/src/semgetvalue.c, posix/src/sempost.c, posix/src/semunlink.c, posix/src/types.c, score/cpu/powerpc/rtems/old-exceptions/cpu.h: Remove all pretense of POSIX MP support. The support in place was only a shell. This should make maintenance easier.
  • posix/include/rtems/posix/condmp.h, posix/include/rtems/posix/mqueuemp.h, posix/include/rtems/posix/mutexmp.h, posix/include/rtems/posix/pthreadmp.h, posix/include/rtems/posix/semaphoremp.h, posix/src/condmp.c, posix/src/mutexmp.c, posix/src/semaphoremp.c: Removed.
  • Property mode set to 100644
File size: 2.0 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#if HAVE_CONFIG_H
18#include "config.h"
19#endif
20
21#include <stdarg.h>
22
23#include <pthread.h>
24#include <limits.h>
25#include <errno.h>
26#include <fcntl.h>
27#include <mqueue.h>
28
29#include <rtems/system.h>
30#include <rtems/score/watchdog.h>
31#include <rtems/seterr.h>
32#include <rtems/posix/mqueue.h>
33#include <rtems/posix/time.h>
34
35/*
36 *
37 *  15.2.2 Close a Message Queue, P1003.1b-1993, p. 275
38 */
39
40int mq_close(
41  mqd_t  mqdes
42)
43{
44  POSIX_Message_queue_Control    *the_mq;
45  POSIX_Message_queue_Control_fd *the_mq_fd;
46  Objects_Locations               location;
47
48  the_mq_fd = _POSIX_Message_queue_Get_fd( mqdes, &location );
49  switch ( location ) {
50#if defined(RTEMS_MULTIPROCESSING)
51    case OBJECTS_REMOTE:
52#endif
53    case OBJECTS_ERROR:
54      rtems_set_errno_and_return_minus_one( EBADF );
55
56    case OBJECTS_LOCAL:
57      /*
58       *  First update the actual message queue to reflect this descriptor
59       *  being disassociated.  This may result in the queue being really
60       *  deleted.
61       */
62
63      the_mq = the_mq_fd->Queue;
64      the_mq->open_count -= 1;
65      _POSIX_Message_queue_Delete( the_mq );
66
67      /*
68       *  Now close this file descriptor.
69       */
70
71      _Objects_Close(
72        &_POSIX_Message_queue_Information_fds, &the_mq_fd->Object );
73      _POSIX_Message_queue_Free_fd( the_mq_fd );
74
75      _Thread_Enable_dispatch();
76      return 0;
77  }
78  return POSIX_BOTTOM_REACHED();
79}
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