linux-kernel - [PATCH] [media] dibx000_common: use strlcpy() instead of strncpy()

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Date:   Mon, 8 Jan 2018 20:52:34 +0800
From:   Xiongfeng Wang <wangxiongfeng2@...wei.com>
To:     <mchehab@...nel.org>
CC:     <linux-media@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <wangxiongfeng2@...wei.com>, <arnd@...db.de>
Subject: [PATCH] [media] dibx000_common: use strlcpy() instead of strncpy()

From: Xiongfeng Wang <xiongfeng.wang@...aro.org>

gcc-8 reports

drivers/media/dvb-frontends/dibx000_common.c: In function
'i2c_adapter_init':
./include/linux/string.h:245:9: warning: '__builtin_strncpy' specified
bound 48 equals destination size [-Wstringop-truncation]

We need to use strlcpy() to make sure the dest string is
nul-terminated.

Signed-off-by: Xiongfeng Wang <xiongfeng.wang@...aro.org>
---
 drivers/media/dvb-frontends/dibx000_common.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/media/dvb-frontends/dibx000_common.c b/drivers/media/dvb-frontends/dibx000_common.c
index bc28184..6486f17 100644
--- a/drivers/media/dvb-frontends/dibx000_common.c
+++ b/drivers/media/dvb-frontends/dibx000_common.c
@@ -424,7 +424,7 @@ static int i2c_adapter_init(struct i2c_adapter *i2c_adap,
 				struct i2c_algorithm *algo, const char *name,
 				struct dibx000_i2c_master *mst)
 {
-	strncpy(i2c_adap->name, name, sizeof(i2c_adap->name));
+	strlcpy(i2c_adap->name, name, sizeof(i2c_adap->name));
 	i2c_adap->algo = algo;
 	i2c_adap->algo_data = NULL;
 	i2c_set_adapdata(i2c_adap, mst);
-- 
1.8.3.1