1 files changed, 114 insertions, 0 deletions
diff --git a/nuttx/sched/mq_getattr.c b/nuttx/sched/mq_getattr.c
new file mode 100644
index 0000000000..52292410e4
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+++ b/nuttx/sched/mq_getattr.c
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+/************************************************************
+ * mq_getattr.c
+ *
+ *   Copyright (C) 2007 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name Gregory Nutt nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ************************************************************/
+
+/************************************************************
+ * Included Files
+ ************************************************************/
+
+#include <sys/types.h>      /* uint32, etc. */
+#include <stdarg.h>         /* va_list */
+#include <unistd.h>
+#include <string.h>
+#include <assert.h>
+#include <mqueue.h>
+#include <sched.h>
+#include <debug.h>
+#include <nuttx/kmalloc.h>
+#include <nuttx/arch.h>
+#include <nuttx/os_external.h>
+#include "os_internal.h"
+#include "sig_internal.h"
+#include "mq_internal.h"
+
+/************************************************************
+ * Definitions
+ ************************************************************/
+
+/************************************************************
+ * Private Type Declarations
+ ************************************************************/
+
+/************************************************************
+ * Global Variables
+ ************************************************************/
+
+/************************************************************
+ * Private Variables
+ ************************************************************/
+
+/************************************************************
+ * Private Functions
+ ************************************************************/
+
+/************************************************************
+ * Public Functions
+ ************************************************************/
+
+/************************************************************
+ * Function:  mq_getattr
+ *
+ * Description:
+ *   This functions gets status information and attributes
+ *   associated with the specified message queue.
+ *
+ * Parameters:
+ *   mqdes - Message queue descriptor
+ *   mq_stat - Buffer in which to return attributes
+ *
+ * Return Value:
+ *   0 (OK) if attributes provided, -1 (ERROR) otherwise.
+ *
+ * Assumptions:
+ *
+ ************************************************************/
+
+int mq_getattr(mqd_t mqdes, struct mq_attr *mq_stat)
+{
+  int ret = ERROR;
+
+  if (mqdes && mq_stat)
+    {
+      /* Return the attributes */
+
+      mq_stat->mq_maxmsg  = mqdes->msgq->maxmsgs;
+      mq_stat->mq_msgsize = mqdes->msgq->maxmsgsize;
+      mq_stat->mq_flags   = mqdes->oflags;
+      mq_stat->mq_curmsgs = mqdes->msgq->nmsgs;
+
+      ret = OK;
+    }
+
+  return ret;
+}