linux-kernel - [PATCH linux-next] ipmi/watchdog: use strscpy() to instead of strncpy()

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Date:   Mon, 5 Dec 2022 19:36:40 +0800 (CST)
From:   <yang.yang29@....com.cn>
To:     <minyard@....org>
Cc:     <openipmi-developer@...ts.sourceforge.net>,
        <linux-kernel@...r.kernel.org>, <xu.panda@....com.cn>,
        <yang.yang29@....com.cn>
Subject: [PATCH linux-next] ipmi/watchdog: use strscpy() to instead of strncpy()

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/char/ipmi/ipmi_watchdog.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/char/ipmi/ipmi_watchdog.c b/drivers/char/ipmi/ipmi_watchdog.c
index 47365150e431..0d4a8dcacfd4 100644
--- a/drivers/char/ipmi/ipmi_watchdog.c
+++ b/drivers/char/ipmi/ipmi_watchdog.c
@@ -213,8 +213,7 @@ static int set_param_str(const char *val, const struct kernel_param *kp)
 	char       valcp[16];
 	char       *s;

-	strncpy(valcp, val, 15);
-	valcp[15] = '\0';
+	strscpy(valcp, val, 16);

 	s = strstrip(valcp);

-- 
2.15.2