linux-kernel - [Outreachy kernel] [PATCH] staging: rtl8192u: ieee80211: Replaced strncpy() with strscpy()

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Date:   Tue, 13 Apr 2021 14:30:41 +0200
From:   "Fabio M. De Francesco" <fmdefrancesco@...il.com>
To:     outreachy-kernel@...glegroups.com,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-staging@...ts.linux.dev, linux-kernel@...r.kernel.org
Cc:     "Fabio M. De Francesco" <fmdefrancesco@...il.com>
Subject: [Outreachy kernel] [PATCH] staging: rtl8192u: ieee80211: Replaced strncpy() with strscpy()

Replaced strncpy() with strscpy() because of compilation time warnings
about possible truncation of output [-Wstringop-truncation].
Furthermore, according to the Linux official documentation, strscpy() is
preferred to strncpy.

Signed-off-by: Fabio M. De Francesco <fmdefrancesco@...il.com>
---
 drivers/staging/rtl8192u/ieee80211/ieee80211_softmac.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/staging/rtl8192u/ieee80211/ieee80211_softmac.c b/drivers/staging/rtl8192u/ieee80211/ieee80211_softmac.c
index 25ea8e1b6b65..aa58eedf5e86 100644
--- a/drivers/staging/rtl8192u/ieee80211/ieee80211_softmac.c
+++ b/drivers/staging/rtl8192u/ieee80211/ieee80211_softmac.c
@@ -1385,12 +1385,12 @@ inline void ieee80211_softmac_new_net(struct ieee80211_device *ieee, struct ieee
 			 * essid provided by the user.
 			 */
 			if (!ssidbroad) {
-				strncpy(tmp_ssid, ieee->current_network.ssid, IW_ESSID_MAX_SIZE);
+				strscpy(tmp_ssid, ieee->current_network.ssid, IW_ESSID_MAX_SIZE);
 				tmp_ssid_len = ieee->current_network.ssid_len;
 			}
 			memcpy(&ieee->current_network, net, sizeof(struct ieee80211_network));
 
-			strncpy(ieee->current_network.ssid, tmp_ssid, IW_ESSID_MAX_SIZE);
+			strscpy(ieee->current_network.ssid, tmp_ssid, IW_ESSID_MAX_SIZE);
 			ieee->current_network.ssid_len = tmp_ssid_len;
 			netdev_info(ieee->dev,
 				    "Linking with %s,channel:%d, qos:%d, myHT:%d, networkHT:%d\n",
-- 
2.31.1