source: rtems/cpukit/posix/src/mqueuesetattr.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: 2.1 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/*PAGE
36 *
37 *  15.2.7 Set Message Queue Attributes, P1003.1b-1993, p. 281
38 */
39
40int mq_setattr(
41  mqd_t                 mqdes,
42  const struct mq_attr *mqstat,
43  struct mq_attr       *omqstat
44)
45{
46  POSIX_Message_queue_Control_fd *the_mq_fd;
47  CORE_message_queue_Control     *the_core_mq;
48  Objects_Locations               location;
49
50  if ( !mqstat )
51    rtems_set_errno_and_return_minus_one( EINVAL );
52
53  the_mq_fd = _POSIX_Message_queue_Get_fd( mqdes, &location );
54  switch ( location ) {
55#if defined(RTEMS_MULTIPROCESSING)
56    case OBJECTS_REMOTE:
57#endif
58    case OBJECTS_ERROR:
59      rtems_set_errno_and_return_minus_one( EBADF );
60    case OBJECTS_LOCAL:
61
62      the_core_mq = &the_mq_fd->Queue->Message_queue;
63
64      /*
65       *  Return the old values.
66       */
67
68      if ( omqstat ) {
69        omqstat->mq_flags   = the_mq_fd->oflag;
70        omqstat->mq_msgsize = the_core_mq->maximum_message_size;
71        omqstat->mq_maxmsg  = the_core_mq->maximum_pending_messages;
72        omqstat->mq_curmsgs = the_core_mq->number_of_pending_messages;
73      }
74
75      the_mq_fd->oflag = mqstat->mq_flags;
76      _Thread_Enable_dispatch();
77      return 0;
78  }
79  return POSIX_BOTTOM_REACHED();
80}
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