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lib/asyncmsg/asyncmsg_connect_attr.c

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+/*
+ * $QNXLicenseC:
+ * Copyright 2007, QNX Software Systems. All Rights Reserved.
+ * 
+ * You must obtain a written license from and pay applicable license fees to QNX 
+ * Software Systems before you may reproduce, modify or distribute this software, 
+ * or any work that includes all or part of this software.   Free development 
+ * licenses are available for evaluation and non-commercial purposes.  For more 
+ * information visit http://licensing.qnx.com or email licensing@qnx.com.
+ *  
+ * This file may contain contributions from others.  Please review this entire 
+ * file for other proprietary rights or license notices, as well as the QNX 
+ * Development Suite License Guide at http://licensing.qnx.com/license-guide/ 
+ * for other information.
+ * $
+ */
+
+
+
+
+#include "asyncmsg_priv.h"
+
+int asyncmsg_connect_attr(int coid, struct _asyncmsg_connection_attr *old_attr, const struct _asyncmsg_connection_attr *new_attr)
+{
+	struct _asyncmsg_connect_context *acc;
+	struct _asyncmsg_connection_descriptor *acd;
+	
+	if ((acc = _asyncmsg_handle(coid, _ASYNCMSG_HANDLE_LOOKUP, 0)) == NULL)
+		return -1;
+	acd = &acc->acd;
+
+	_mutex_lock(&acd->mu);
+	if (old_attr) {
+		*old_attr = acd->attr;
+	}
+	
+	if (new_attr) {
+		acd->attr = *new_attr;
+		/* I can't change max_buffer_size/buff_size, these
+		 * will causing acd->start changed, which means, the
+		 * memory kernel is referencing will gone :-(
+		 */
+	}
+	_mutex_unlock(&acd->mu);
+	return 0;
+}
+
+__SRCVERSION("asyncmsg_connect_attr.c $Rev: 153052 $");