linux-kernel - [PATCH linux-next] block: use strscpy() is more robust and safer

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Message-ID: <202211092132530746481@zte.com.cn>
Date:   Wed, 9 Nov 2022 21:32:53 +0800 (CST)
From:   <yang.yang29@....com.cn>
To:     <axboe@...nel.dk>
Cc:     <linux-block@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <xu.panda@....com.cn>, <yang.yang29@....com.cn>
Subject: [PATCH linux-next] block: use strscpy() is more robust and safer

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.

Reported-by: Zeal Robot <zealci@....com.cn>
Signed-off-by: Xu Panda <xu.panda@....com.cn>
Signed-off-by: Yang Yang <yang.yang29@....com>
---
 block/elevator.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/block/elevator.c b/block/elevator.c
index a5bdc3b1e7e5..0885b66c3868 100644
--- a/block/elevator.c
+++ b/block/elevator.c
@@ -749,7 +749,7 @@ ssize_t elv_iosched_store(struct request_queue *q, const char *buf,
 	if (!elv_support_iosched(q))
 		return count;

-	strlcpy(elevator_name, buf, sizeof(elevator_name));
+	strscpy(elevator_name, buf, sizeof(elevator_name));
 	ret = elevator_change(q, strstrip(elevator_name));
 	if (!ret)
 		return count;
-- 
2.15.2