linux-kernel - [PATCH net-next] wifi: airo: use strscpy() to instead of strncpy()

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Date:   Fri, 23 Dec 2022 10:52:04 +0800 (CST)
From:   <yang.yang29@....com.cn>
To:     <kvalo@...nel.org>
Cc:     <davem@...emloft.net>, <edumazet@...gle.com>, <kuba@...nel.org>,
        <pabeni@...hat.com>, <akpm@...ux-foundation.org>,
        <songmuchun@...edance.com>, <brauner@...nel.org>,
        <julia.lawall@...ia.fr>, <gustavoars@...nel.org>,
        <jason@...c4.com>, <linux-wireless@...r.kernel.org>,
        <netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <xu.panda@....com.cn>, <yang.yang29@....com.cn>
Subject: [PATCH net-next] wifi: airo: use strscpy() to instead of strncpy()

From: Xu Panda <xu.panda@....com.cn>

The implementation of strscpy() is more robust and safer.
That's now the recommended way to copy NUL-terminated strings.

Signed-off-by: Xu Panda <xu.panda@....com.cn>
Signed-off-by: Yang Yang <yang.yang29@....com>
---
 drivers/net/wireless/cisco/airo.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/net/wireless/cisco/airo.c b/drivers/net/wireless/cisco/airo.c
index 7c4cc5f5e1eb..600a64f671ce 100644
--- a/drivers/net/wireless/cisco/airo.c
+++ b/drivers/net/wireless/cisco/airo.c
@@ -6067,8 +6067,7 @@ static int airo_get_nick(struct net_device *dev,
 	struct airo_info *local = dev->ml_priv;

 	readConfigRid(local, 1);
-	strncpy(extra, local->config.nodeName, 16);
-	extra[16] = '\0';
+	strscpy(extra, local->config.nodeName, 17);
 	dwrq->length = strlen(extra);

 	return 0;
-- 
2.15.2