Merge pull request #422 from BernardXiong/master

Add lwIP/NAT, DHCP server and dlib(LIBC of IAR)

1 files changed, 53 insertions, 0 deletions

diff --git a/components/libc/dlib/syscall_read.c b/components/libc/dlib/syscall_read.c
new file mode 100644
index 0000000000..aa13654189
--- /dev/null
+++ b/components/libc/dlib/syscall_read.c
@@ -0,0 +1,53 @@
+/*
+ * File      : syscall_read.c
+ * This file is part of RT-Thread RTOS
+ * COPYRIGHT (C) 2006 - 2015, RT-Thread Development Team
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License along
+ *  with this program; if not, write to the Free Software Foundation, Inc.,
+ *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2015-01-28     Bernard      first version
+ */
+
+#include <rtthread.h>
+#ifdef RT_USING_DFS
+#include <dfs_posix.h>
+#endif
+#include <yfuns.h>
+
+#pragma module_name = "?__read"
+size_t __read(int handle, unsigned char *buf, size_t len)
+{
+#ifdef RT_USING_DFS
+    int size;
+#endif
+
+    if (handle == _LLIO_STDIN)
+    {
+        /* TODO */
+        return 0;
+    }
+
+    if ((handle == _LLIO_STDOUT) || (handle == _LLIO_STDERR))
+        return _LLIO_ERROR;
+
+#ifndef RT_USING_DFS
+    return _LLIO_ERROR;
+#else
+    size = read(handle - _LLIO_STDERR - 1, buf, len);
+    return size;
+#endif
+}