From 690190a0b98b577ed7d1db22f6b7fb0882e34114 Mon Sep 17 00:00:00 2001
From: Ariadne Conill <ariadne@dereferenced.org>
Date: Sat, 25 Jul 2020 08:49:37 -0600
Subject: [PATCH] libifupdown: interface-file: do not process use directives
 unless in an interface context

---
 libifupdown/interface-file.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/libifupdown/interface-file.c b/libifupdown/interface-file.c
index f1dcbad..d7c2835 100644
--- a/libifupdown/interface-file.c
+++ b/libifupdown/interface-file.c
@@ -100,6 +100,12 @@ lif_interface_file_parse(struct lif_dict *collection, const char *filename)
 		{
 			char *executor = lif_next_token(&bufp);
 
+			if (cur_iface == NULL)
+			{
+				fprintf(stderr, "%s: use '%s' without interface\n", filename, executor);
+				goto parse_error;
+			}
+
 			/* pass requires as compatibility env vars to appropriate executors (bridge, bond) */
 			if (!strcmp(executor, "dhcp"))
 				cur_iface->is_dhcp = true;