From 44ce6969048c2e252f3f9d66fa485c77bdab8ae7 Mon Sep 17 00:00:00 2001
From: YOUR_NAME <zhangfanfan2@huawei.com>
Date: Tue, 8 Jun 2021 20:01:39 +0800
Subject: [PATCH] =?UTF-8?q?fix:=20=E5=86=85=E6=A0=B8=E6=80=81=E5=9C=A8cons?=
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printf实现流程上会调用cmd为TIOCGWINSZ的ioctl命令，该命令的实现
在console层ConsoleGetWinSize函数中，而此函数copy结果时使用函数
LOS_ArchCopyToUser，由于该过程在内核态，导致LOS_ArchCopyToUser失败，
从而引发printf无法正常打印的问题。

close: #I3UG00

Signed-off-by: zhangfanfan <zhangfanfan2@huawei.com>
Change-Id: I3e85f682429cbe30842206842ddb2a8388ec8412
---
 kernel/common/console.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/kernel/common/console.c b/kernel/common/console.c
index 96996012..8c916a1a 100644
--- a/kernel/common/console.c
+++ b/kernel/common/console.c
@@ -853,11 +853,10 @@ STATIC INT32 ConsoleGetWinSize(unsigned long arg)
         .ws_row = DEFAULT_WINDOW_SIZE_ROW
     };
 
-    if(LOS_ArchCopyToUser((VOID *)arg, &kws, sizeof(struct winsize)) != 0) {
+    if (LOS_CopyFromKernel((VOID *)arg, sizeof(struct winsize), &kws, sizeof(struct winsize)) != 0) {
         return -EFAULT;
-    } else {
-        return LOS_OK;
     }
+    return LOS_OK;
 }
 
 STATIC INT32 ConsoleGetTermios(unsigned long arg)
-- 
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