1 files changed, 90 insertions, 0 deletions
diff --git a/cpukit/posix/src/mqueuesetattr.c b/cpukit/posix/src/mqueuesetattr.c
new file mode 100644
index 0000000000..683c3887b2
--- /dev/null
+++ b/cpukit/posix/src/mqueuesetattr.c
@@ -0,0 +1,90 @@
+/*
+ *  NOTE:  The structure of the routines is identical to that of POSIX
+ *         Message_queues to leave the option of having unnamed message
+ *         queues at a future date.  They are currently not part of the
+ *         POSIX standard but unnamed message_queues are.  This is also
+ *         the reason for the apparently unnecessary tracking of
+ *         the process_shared attribute.  [In addition to the fact that
+ *         it would be trivial to add pshared to the mq_attr structure
+ *         and have process private message queues.]
+ *
+ *         This code ignores the O_RDONLY/O_WRONLY/O_RDWR flag at open
+ *         time.
+ *
+ *  COPYRIGHT (c) 1989-2007.
+ *  On-Line Applications Research Corporation (OAR).
+ *
+ *  The license and distribution terms for this file may be
+ *  found in the file LICENSE in this distribution or at
+ *  http://www.rtems.com/license/LICENSE.
+ *
+ *  $Id$
+ */
+
+#if HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <stdarg.h>
+
+#include <pthread.h>
+#include <limits.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <mqueue.h>
+
+#include <rtems/system.h>
+#include <rtems/score/watchdog.h>
+#include <rtems/seterr.h>
+#include <rtems/posix/mqueue.h>
+#include <rtems/posix/time.h>
+
+/*PAGE
+ *
+ *  15.2.7 Set Message Queue Attributes, P1003.1b-1993, p. 281
+ */
+
+int mq_setattr(
+  mqd_t                 mqdes,
+  const struct mq_attr *mqstat,
+  struct mq_attr       *omqstat
+)
+{
+  POSIX_Message_queue_Control_fd *the_mq_fd;
+  CORE_message_queue_Control     *the_core_mq;
+  Objects_Locations               location;
+
+  if ( !mqstat )
+    rtems_set_errno_and_return_minus_one( EINVAL );
+
+  the_mq_fd = _POSIX_Message_queue_Get_fd( mqdes, &location );
+  switch ( location ) {
+
+    case OBJECTS_LOCAL:
+
+      the_core_mq = &the_mq_fd->Queue->Message_queue;
+
+      /*
+       *  Return the old values.
+       */
+
+      if ( omqstat ) {
+        omqstat->mq_flags   = the_mq_fd->oflag;
+        omqstat->mq_msgsize = the_core_mq->maximum_message_size;
+        omqstat->mq_maxmsg  = the_core_mq->maximum_pending_messages;
+        omqstat->mq_curmsgs = the_core_mq->number_of_pending_messages;
+      }
+
+      the_mq_fd->oflag = mqstat->mq_flags;
+      _Thread_Enable_dispatch();
+      return 0;
+
+#if defined(RTEMS_MULTIPROCESSING)
+    case OBJECTS_REMOTE:
+#endif
+    case OBJECTS_ERROR:
+      break;
+  }
+
+  rtems_set_errno_and_return_minus_one( EBADF );
+}