[PATCH] packet: move from strlcpy with unused retval to strscpy

From: Wolfram Sang
Date: Thu Aug 18 2022 - 17:14:40 EST


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@xxxxxxxxxxxxxx/
Signed-off-by: Wolfram Sang <wsa+renesas@xxxxxxxxxxxxxxxxxxxx>
---
net/packet/af_packet.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
index 5cbe07116e04..7de46d831349 100644
--- a/net/packet/af_packet.c
+++ b/net/packet/af_packet.c
@@ -1905,7 +1905,7 @@ static int packet_rcv_spkt(struct sk_buff *skb, struct net_device *dev,
*/

spkt->spkt_family = dev->type;
- strlcpy(spkt->spkt_device, dev->name, sizeof(spkt->spkt_device));
+ strscpy(spkt->spkt_device, dev->name, sizeof(spkt->spkt_device));
spkt->spkt_protocol = skb->protocol;

/*
@@ -3565,7 +3565,7 @@ static int packet_getname_spkt(struct socket *sock, struct sockaddr *uaddr,
rcu_read_lock();
dev = dev_get_by_index_rcu(sock_net(sk), READ_ONCE(pkt_sk(sk)->ifindex));
if (dev)
- strlcpy(uaddr->sa_data, dev->name, sizeof(uaddr->sa_data));
+ strscpy(uaddr->sa_data, dev->name, sizeof(uaddr->sa_data));
rcu_read_unlock();

return sizeof(*uaddr);
--
2.35.1