add some file test template.

git-svn-id: https://rt-thread.googlecode.com/svn/trunk@398 bbd45198-f89e-11dd-88c7-29a3b14d5316

examples/file/readwrite.c

@@ -0,0 +1,34 @@
+/*
+ * File      : readwrite.c
+ * This file is part of RT-TestCase in RT-Thread RTOS
+ * COPYRIGHT (C) 2010, RT-Thread Development Team
+ *
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ * http://www.rt-thread.org/license/LICENSE
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2010-02-10     Bernard      first version
+ */
+#include <rtthread.h>
+#include <dfs_posix.h>
+
+/* 文件读写测试 */
+void readwrite(const char* filename)
+{
+	int fd;
+
+	/* 只写打开 */
+
+	/* 只写并在末尾添加打开 */
+
+	/* 只读打开进行数据校验 */
+
+	/* lseek测试，读出并校验数据 */
+}
+
+#ifdef RT_USING_FINSH
+#include <finsh.h>
+FINSH_FUNCTION_EXPORT(readwrite, perform file read and write test);
+#endif