setup-interfaces: don't install legacy vlan package

Don't install vlan package if ifupdown-ng package is used.

Add tests for this.

fixes https://gitlab.alpinelinux.org/alpine/alpine-conf/-/issues/10495

2 files changed, 55 insertions, 2 deletions

diff --git a/setup-interfaces.in b/setup-interfaces.in
index f1e98eb..fe4dac3 100644
--- a/setup-interfaces.in
+++ b/setup-interfaces.in
@@ -504,7 +504,11 @@ prompt_for_interfaces() {
 			echo -e "\tvlan-raw-device $raw_device" >> interfaces
 		fi
 		case "$iface" in
-			*.[0-9]*|vlan[0-9]*) PKGS="$PKGS vlan";;
+			*.[0-9]*|vlan[0-9]*)
+				if ! [ -f "$ROOT"usr/libexec/ifupdown-ng/link ]; then
+					PKGS="$PKGS vlan"
+				fi
+				;;
 		esac
 		case $type in
 		manual)
diff --git a/tests/setup_interfaces_test b/tests/setup_interfaces_test
index c09968c..a2e03d6 100755
--- a/tests/setup_interfaces_test
+++ b/tests/setup_interfaces_test
@@ -4,7 +4,9 @@
 init_tests \
 	setup_interfaces_usage \
 	setup_interfaces_interactive_dhcp \
-	setup_interfaces_interactive_vlan
+	setup_interfaces_interactive_vlan \
+	setup_interfaces_interactive_vlan_ng \
+	setup_interfaces_interactive_vlan0_ng
 
 setup_interfaces_usage_body() {
 	test_usage setup-interfaces
@@ -53,3 +55,50 @@ setup_interfaces_interactive_vlan_body() {
 		-o match:"apk add.*vlan" \
 		setup-interfaces <answers
 }
+
+setup_interfaces_interactive_vlan_ng_body() {
+	init_env
+	create_fake_ifaces lo eth0
+
+	mkdir -p usr/libexec/ifupdown-ng
+	touch usr/libexec/ifupdown-ng/link
+
+	(
+		# Which one do you want to initialize? (or '?' or 'done') [eth0]
+		echo eth0.5
+		# Ip address for eth0.5? (or 'dhcp', 'none', '?') [dhcp]
+		echo dhcp
+		# Which one do you want to initialize? (or '?' or 'done') [eth0]
+		echo done
+		# Do you want to do any manual network configuration? (y/n) [n]
+		echo n
+	)>answers
+	atf_check -s exit:0 \
+		-o not-match:"apk add.*vlan" \
+		setup-interfaces <answers
+}
+
+setup_interfaces_interactive_vlan0_ng_body() {
+	init_env
+	create_fake_ifaces lo eth0
+
+	mkdir -p usr/libexec/ifupdown-ng
+	touch usr/libexec/ifupdown-ng/link
+
+	(
+		# Which one do you want to initialize? (or '?' or 'done') [eth0]
+		echo vlan0
+		# Which one do you want use for vlan0? (or 'done') [eth0]
+		echo eth0
+		# Ip address for vlan0? (or 'dhcp', 'none', '?') [dhcp]
+		echo dhcp
+		# Which one do you want to initialize? (or '?' or 'done') [eth0]
+		echo done
+		# Do you want to do any manual network configuration? (y/n) [n]
+		echo n
+	)>answers
+	atf_check -s exit:0 \
+		-o match:"Available raw devices are: eth0" \
+		-o not-match:"apk add.*vlan" \
+		setup-interfaces <answers
+}