1 files changed, 118 insertions, 0 deletions
diff --git a/nuttx/lib/mqueue/mq_setattr.c b/nuttx/lib/mqueue/mq_setattr.c
new file mode 100644
index 000000000..5d82299fe
--- /dev/null
+++ b/nuttx/lib/mqueue/mq_setattr.c
@@ -0,0 +1,118 @@
+/************************************************************************
+ * lib/mqueue/mq_setattr.c
+ *
+ *   Copyright (C) 2007, 2009, 2011 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 NuttX 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 <nuttx/config.h>
+
+#include <fcntl.h>          /* O_NONBLOCK */
+#include <mqueue.h>
+
+#include <nuttx/mqueue.h>
+
+/************************************************************************
+ * Definitions
+ ************************************************************************/
+
+/************************************************************************
+ * Private Type Declarations
+ ************************************************************************/
+
+/************************************************************************
+ * Global Variables
+ ************************************************************************/
+
+/************************************************************************
+ * Private Variables
+ ************************************************************************/
+
+/************************************************************************
+ * Private Functions
+ ************************************************************************/
+
+/************************************************************************
+ * Public Functions
+ ************************************************************************/
+
+/************************************************************************
+ * Function:  mq_setattr
+ *
+ * Description:
+ *   This function sets the attributes associated with the
+ *   specified message queue "mqdes."  Only the "O_NONBLOCK"
+ *   bit of the "mq_flags" can be changed.
+ *
+ *   If "oldstat" is non-null, mq_setattr() will store the
+ *   previous message queue attributes at that location (just
+ *   as would have been returned by mq_getattr()).
+ *
+ * Parameters:
+ *   mqdes - Message queue descriptor
+ *   mq_stat - New attributes
+ *   oldstate - Old attributes
+ *
+ * Return Value:
+ *   0 (OK) if attributes are set successfully, otherwise
+ *   -1 (ERROR).
+ *
+ * Assumptions:
+ *
+ ************************************************************************/
+
+int mq_setattr(mqd_t mqdes, const struct mq_attr *mq_stat,
+               struct mq_attr *oldstat)
+{
+  int ret = ERROR;
+
+  if (mqdes && mq_stat)
+    {
+      /* Return the attributes if so requested */
+
+      if (oldstat)
+        {
+          (void)mq_getattr(mqdes, oldstat);
+        }
+
+      /* Set the new value of the O_NONBLOCK flag. */
+
+      mqdes->oflags = ((mq_stat->mq_flags & O_NONBLOCK) |
+                       (mqdes->oflags & (~O_NONBLOCK)));
+      ret = OK;
+    }
+
+  return ret;
+}