debvm-create: also support --initsystem=busybox

Reported-by: Johannes Schauer Marin Rodrigues <josch@debian.org>

1 files changed, 15 insertions, 4 deletions

diff --git a/bin/debvm-create b/bin/debvm-create
index fffa494..89256eb 100755
--- a/bin/debvm-create
+++ b/bin/debvm-create
@@ -37,7 +37,7 @@ A suitable kernel image is automatically selected and installed into the image.
 Set the hostname of the virtual machine.
 By default, the hostname is B<testvm>.
 
-=item B<--initsystem>=B<systemd> | B<runit> | B<sysv> | B<none>
+=item B<--initsystem>=B<systemd> | B<busybox> | B<runit> | B<sysv> | B<none>
 
 Select an init system to be used.
 The default is B<systemd> independently of the Debian release.
@@ -75,6 +75,7 @@ The following tasks may be skipped.
 Skips adding a the customize-autologin.sh to B<mmdebstrap> that configures
 automatic root login on a serial console and also parses the C<TERM> kernel
 cmdline and passes it as C<TERM> to B<agetty>.
+This is specific to using B<runit>, B<systemd> or B<sysv> as init system.
 
 =item B<ext4>
 
@@ -184,10 +185,10 @@ opt_hostname() {
 }
 opt_initsystem() {
 	case "$1" in
-		systemd|sysv|runit|none)
+		busybox|none|runit|systemd|sysv)
 		;;
 		*)
-			die "value for --initsystem must be one of systemd, sysv or none"
+			die "value for --initsystem must be one of systemd, busybox, none, runit or sysv"
 		;;
 	esac
 	INITSYSTEM=$1
@@ -284,6 +285,16 @@ set -- \
 	"$@"
 
 case "$INITSYSTEM" in
+	busybox)
+		set -- \
+			--include=busybox \
+			'--customize-hook=ln -s /bin/busybox $1/sbin/init' \
+			"$@"
+		SKIP="${SKIP}autologin,"
+	;;
+	none)
+		SKIP="${SKIP}autologin,"
+	;;
 	runit)
 		set -- --include=runit-init,passwd "$@"
 	;;
@@ -347,7 +358,7 @@ if ! check_skip usrmerge; then
 	set -- --hook-dir=/usr/share/mmdebstrap/hooks/maybe-merged-usr "$@"
 fi
 
-if test "$INITSYSTEM" != none && ! check_skip autologin; then
+if ! check_skip autologin; then
 	set -- "--customize-hook=$SHARE_DIR/customize-autologin.sh" "$@"
 fi