linux-kernel - [PATCH] caif: move from strlcpy with unused retval to strscpy

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Message-Id: <20220818210214.8371-1-wsa+renesas@sang-engineering.com>
Date:   Thu, 18 Aug 2022 23:02:14 +0200
From:   Wolfram Sang <wsa+renesas@...g-engineering.com>
To:     linux-kernel@...r.kernel.org
Cc:     Wolfram Sang <wsa+renesas@...g-engineering.com>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>, netdev@...r.kernel.org
Subject: [PATCH] caif: move from strlcpy with unused retval to strscpy

Follow the advice of the below link and prefer 'strscpy' in this
subsystem. Conversion is 1:1 because the return value is not used.
Generated by a coccinelle script.

Link: https://lore.kernel.org/r/CAHk-=wgfRnXz0W3D37d01q3JFkr_i_uTL=V6A6G1oUZcprmknw@mail.gmail.com/
Signed-off-by: Wolfram Sang <wsa+renesas@...g-engineering.com>
---
 net/caif/caif_dev.c | 2 +-
 net/caif/caif_usb.c | 2 +-
 net/caif/cfcnfg.c   | 4 ++--
 net/caif/cfctrl.c   | 2 +-
 4 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/net/caif/caif_dev.c b/net/caif/caif_dev.c
index 52dd0b6835bc..6a0cba4fc29f 100644
--- a/net/caif/caif_dev.c
+++ b/net/caif/caif_dev.c
@@ -342,7 +342,7 @@ int caif_enroll_dev(struct net_device *dev, struct caif_dev_common *caifdev,
 	mutex_lock(&caifdevs->lock);
 	list_add_rcu(&caifd->list, &caifdevs->list);
 
-	strlcpy(caifd->layer.name, dev->name,
+	strscpy(caifd->layer.name, dev->name,
 		sizeof(caifd->layer.name));
 	caifd->layer.transmit = transmit;
 	res = cfcnfg_add_phy_layer(cfg,
diff --git a/net/caif/caif_usb.c b/net/caif/caif_usb.c
index 4be6b04879a1..ebc202ffdd8d 100644
--- a/net/caif/caif_usb.c
+++ b/net/caif/caif_usb.c
@@ -184,7 +184,7 @@ static int cfusbl_device_notify(struct notifier_block *me, unsigned long what,
 		dev_add_pack(&caif_usb_type);
 	pack_added = true;
 
-	strlcpy(layer->name, dev->name, sizeof(layer->name));
+	strscpy(layer->name, dev->name, sizeof(layer->name));
 
 	return 0;
 err:
diff --git a/net/caif/cfcnfg.c b/net/caif/cfcnfg.c
index 23267c8db7c4..52509e185960 100644
--- a/net/caif/cfcnfg.c
+++ b/net/caif/cfcnfg.c
@@ -268,14 +268,14 @@ static int caif_connect_req_to_link_param(struct cfcnfg *cnfg,
 	case CAIFPROTO_RFM:
 		l->linktype = CFCTRL_SRV_RFM;
 		l->u.datagram.connid = s->sockaddr.u.rfm.connection_id;
-		strlcpy(l->u.rfm.volume, s->sockaddr.u.rfm.volume,
+		strscpy(l->u.rfm.volume, s->sockaddr.u.rfm.volume,
 			sizeof(l->u.rfm.volume));
 		break;
 	case CAIFPROTO_UTIL:
 		l->linktype = CFCTRL_SRV_UTIL;
 		l->endpoint = 0x00;
 		l->chtype = 0x00;
-		strlcpy(l->u.utility.name, s->sockaddr.u.util.service,
+		strscpy(l->u.utility.name, s->sockaddr.u.util.service,
 			sizeof(l->u.utility.name));
 		caif_assert(sizeof(l->u.utility.name) > 10);
 		l->u.utility.paramlen = s->param.size;
diff --git a/net/caif/cfctrl.c b/net/caif/cfctrl.c
index 2809cbd6b7f7..cc405d8c7c30 100644
--- a/net/caif/cfctrl.c
+++ b/net/caif/cfctrl.c
@@ -258,7 +258,7 @@ int cfctrl_linkup_request(struct cflayer *layer,
 		tmp16 = cpu_to_le16(param->u.utility.fifosize_bufs);
 		cfpkt_add_body(pkt, &tmp16, 2);
 		memset(utility_name, 0, sizeof(utility_name));
-		strlcpy(utility_name, param->u.utility.name,
+		strscpy(utility_name, param->u.utility.name,
 			UTILITY_NAME_LENGTH);
 		cfpkt_add_body(pkt, utility_name, UTILITY_NAME_LENGTH);
 		tmp8 = param->u.utility.paramlen;
-- 
2.35.1