From b27b1d80322bf6cfc3e5854a64aa014ffc31cec2 Mon Sep 17 00:00:00 2001
From: armink <armink.ztl@gmail.com>
Date: Thu, 22 Mar 2018 12:09:39 +0800
Subject: [PATCH] [Libc][armlibc] Add STDIN_FILENO, STDOUT_FILENO and
 STDERR_FILENO to armlibc/sys/unistd.h.

---
 components/libc/compilers/armlibc/sys/unistd.h | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/components/libc/compilers/armlibc/sys/unistd.h b/components/libc/compilers/armlibc/sys/unistd.h
index 38ba8b5072..56979955ba 100644
--- a/components/libc/compilers/armlibc/sys/unistd.h
+++ b/components/libc/compilers/armlibc/sys/unistd.h
@@ -4,6 +4,11 @@
 #include <rtthread.h>
 
 #ifdef RT_USING_DFS
+
+#define STDIN_FILENO    0       /* standard input file descriptor */
+#define STDOUT_FILENO   1       /* standard output file descriptor */
+#define STDERR_FILENO   2       /* standard error file descriptor */
+
 #include <dfs_posix.h>
 #else
 #define _FREAD      0x0001  /* read enabled */
-- 
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