confile: cleanup get_config_net_ipv6_gateway()

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
lxc · Dec 15, 2020 · 79b7346 · 79b7346
1 parent a6ad2ac
commit 79b7346
Showing 1 changed file with 3 additions and 2 deletions.
diff --git a/src/lxc/confile.c b/src/lxc/confile.c
@@ -5647,14 +5647,15 @@ static int get_config_net_ipv6_gateway(const char *key, char *retv, int inlen,
 		memset(retv, 0, inlen);
 
 	if (!netdev)
-		return -1;
+		return ret_errno(EINVAL);
 
 	if (netdev->ipv6_gateway_auto) {
 		strprint(retv, inlen, "auto");
 	} else if (netdev->ipv6_gateway_dev) {
 		strprint(retv, inlen, "dev");
 	} else if (netdev->ipv6_gateway) {
-		inet_ntop(AF_INET6, netdev->ipv6_gateway, buf, sizeof(buf));
+		if (!inet_ntop(AF_INET6, netdev->ipv6_gateway, buf, sizeof(buf)))
+			return -errno;
 		strprint(retv, inlen, "%s", buf);
 	}