confile: cleanup get_config_net_ipv4_gateway()

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

diff --git a/src/lxc/confile.c b/src/lxc/confile.c
index c15934812d8f736b14b25989ec137a9172347d5f..b1c922e04f6c2718ad39d7a706e629b49540b1d0 100644 (file)
--- a/src/lxc/confile.c
+++ b/src/lxc/confile.c
@@ -5999,14 +5999,15 @@ static int get_config_net_ipv4_gateway(const char *key, char *retv, int inlen,
                memset(retv, 0, inlen);
 
        if (!netdev)
-               return -1;
+               return ret_errno(EINVAL);
 
        if (netdev->ipv4_gateway_auto) {
                strprint(retv, inlen, "auto");
        } else if (netdev->ipv4_gateway_dev) {
                strprint(retv, inlen, "dev");
        } else if (netdev->ipv4_gateway) {
-               inet_ntop(AF_INET, netdev->ipv4_gateway, buf, sizeof(buf));
+               if (!inet_ntop(AF_INET, netdev->ipv4_gateway, buf, sizeof(buf)))
+                       return -errno;
                strprint(retv, inlen, "%s", buf);
        }