[PATCH 5.15 100/137] net: move from strlcpy with unused retval to strscpy

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5.15-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Wolfram Sang <wsa+renesas@xxxxxxxxxxxxxxxxxxxx>

[ Upstream commit 70986397a15bf337d4ca3215a65e30bbe95e5d3c ]

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>
Link: https://lore.kernel.org/r/20220818210215.8395-1-wsa+renesas@xxxxxxxxxxxxxxxxxxxx
Signed-off-by: Jakub Kicinski <kuba@xxxxxxxxxx>
Stable-dep-of: 311cca40661f ("net: fix ifname in netlink ntf during netns move")
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 net/core/dev.c          | 4 ++--
 net/core/drop_monitor.c | 2 +-
 net/core/netpoll.c      | 4 ++--
 3 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/net/core/dev.c b/net/core/dev.c
index d269c1760fa45..af0e0ce53ca52 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -1161,7 +1161,7 @@ static int dev_alloc_name_ns(struct net *net,
 	BUG_ON(!net);
 	ret = __dev_alloc_name(net, name, buf);
 	if (ret >= 0)
-		strlcpy(dev->name, buf, IFNAMSIZ);
+		strscpy(dev->name, buf, IFNAMSIZ);
 	return ret;
 }
 
@@ -1198,7 +1198,7 @@ static int dev_get_valid_name(struct net *net, struct net_device *dev,
 	else if (netdev_name_in_use(net, name))
 		return -EEXIST;
 	else if (dev->name != name)
-		strlcpy(dev->name, name, IFNAMSIZ);
+		strscpy(dev->name, name, IFNAMSIZ);
 
 	return 0;
 }
diff --git a/net/core/drop_monitor.c b/net/core/drop_monitor.c
index 78202141930f4..22015ebc1dd56 100644
--- a/net/core/drop_monitor.c
+++ b/net/core/drop_monitor.c
@@ -473,7 +473,7 @@ net_dm_hw_trap_summary_probe(void *ignore, const struct devlink *devlink,
 		goto out;
 
 	hw_entry = &hw_entries->entries[hw_entries->num_entries];
-	strlcpy(hw_entry->trap_name, metadata->trap_name,
+	strscpy(hw_entry->trap_name, metadata->trap_name,
 		NET_DM_MAX_HW_TRAP_NAME_LEN - 1);
 	hw_entry->count = 1;
 	hw_entries->num_entries++;
diff --git a/net/core/netpoll.c b/net/core/netpoll.c
index bd750863959f2..47a86da6ab980 100644
--- a/net/core/netpoll.c
+++ b/net/core/netpoll.c
@@ -573,7 +573,7 @@ int netpoll_parse_options(struct netpoll *np, char *opt)
 		if ((delim = strchr(cur, ',')) == NULL)
 			goto parse_failed;
 		*delim = 0;
-		strlcpy(np->dev_name, cur, sizeof(np->dev_name));
+		strscpy(np->dev_name, cur, sizeof(np->dev_name));
 		cur = delim;
 	}
 	cur++;
@@ -627,7 +627,7 @@ int __netpoll_setup(struct netpoll *np, struct net_device *ndev)
 	int err;
 
 	np->dev = ndev;
-	strlcpy(np->dev_name, ndev->name, IFNAMSIZ);
+	strscpy(np->dev_name, ndev->name, IFNAMSIZ);
 
 	if (ndev->priv_flags & IFF_DISABLE_NETPOLL) {
 		np_err(np, "%s doesn't support polling, aborting\n",
-- 
2.40.1






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