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

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Date:   Fri, 23 Dec 2022 11:00:18 +0800 (CST)
From:   <yang.yang29@....com.cn>
To:     <kvalo@...nel.org>
Cc:     <davem@...emloft.net>, <edumazet@...gle.com>, <kuba@...nel.org>,
        <pabeni@...hat.com>, <netdev@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <xu.panda@....com.cn>,
        <yang.yang29@....com.cn>
Subject: [PATCH net-next] wlcore: 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/ti/wlcore/boot.c | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/drivers/net/wireless/ti/wlcore/boot.c b/drivers/net/wireless/ti/wlcore/boot.c
index 85abd0a2d1c9..f481c2e3dbc8 100644
--- a/drivers/net/wireless/ti/wlcore/boot.c
+++ b/drivers/net/wireless/ti/wlcore/boot.c
@@ -41,12 +41,9 @@ static int wlcore_boot_parse_fw_ver(struct wl1271 *wl,
 {
 	int ret;

-	strncpy(wl->chip.fw_ver_str, static_data->fw_version,
+	strscpy(wl->chip.fw_ver_str, static_data->fw_version,
 		sizeof(wl->chip.fw_ver_str));

-	/* make sure the string is NULL-terminated */
-	wl->chip.fw_ver_str[sizeof(wl->chip.fw_ver_str) - 1] = '\0';
-
 	ret = sscanf(wl->chip.fw_ver_str + 4, "%u.%u.%u.%u.%u",
 		     &wl->chip.fw_ver[0], &wl->chip.fw_ver[1],
 		     &wl->chip.fw_ver[2], &wl->chip.fw_ver[3],
-- 
2.15.2