scripts/mkimage.sh: scripts to build bootable alpine images

1 files changed, 66 insertions, 0 deletions

diff --git a/scripts/genapkovl-dhcp.sh b/scripts/genapkovl-dhcp.sh
new file mode 100755
index 0000000000..83ed3dd9aa
--- /dev/null
+++ b/scripts/genapkovl-dhcp.sh
@@ -0,0 +1,66 @@
+#!/bin/sh -e
+
+HOSTNAME="$1"
+if [ -z "$HOSTNAME" ]; then
+	echo "usage: $0 hostname"
+	exit 1
+fi
+
+cleanup() {
+	rm -rf "$tmp"
+}
+
+makefile() {
+	OWNER="$1"
+	PERMS="$2"
+	FILENAME="$3"
+	cat > "$FILENAME"
+	chown "$OWNER" "$FILENAME"
+	chmod "$PERMS" "$FILENAME"
+}
+
+rc_add() {
+	mkdir -p "$tmp"/etc/runlevels/"$2"
+	ln -sf /etc/init.d/"$1" "$tmp"/etc/runlevels/"$2"/"$1"
+}
+
+tmp="$(mktemp -d)"
+trap cleanup EXIT
+
+mkdir -p "$tmp"/etc
+makefile root:root 0644 "$tmp"/etc/hostname <<EOF
+$HOSTNAME
+EOF
+
+mkdir -p "$tmp"/etc/network
+makefile root:root 0644 "$tmp"/etc/network/interfaces <<EOF
+auto lo
+iface lo inet loopback
+
+auto eth0
+iface eth0 inet dhcp
+EOF
+
+mkdir -p "$tmp"/etc/apk
+makefile root:root 0644 "$tmp"/etc/apk/world <<EOF
+alpine-base
+EOF
+
+rc_add devfs sysinit
+rc_add dmesg sysinit
+rc_add mdev sysinit
+rc_add hwdrivers sysinit
+rc_add modloop sysinit
+
+rc_add hwclock boot
+rc_add modules boot
+rc_add sysctl boot
+rc_add hostname boot
+rc_add bootmisc boot
+rc_add syslog boot
+
+rc_add mount-ro shutdown
+rc_add killprocs shutdown
+rc_add savecache shutdown
+
+tar -c -C "$tmp" etc | gzip -9n > $HOSTNAME.apkovl.tar.gz