run_hook () { if [ "x${ramdisk_size}" = "x" ]; then ramdisk_size="75%" fi msg -n ":: Mounting tmpfs, size=${ramdisk_size}..." mount -t tmpfs -o "size=${ramdisk_size}" tmpfs /tmpfs msg "done." if [ "x${BOOT_MOUNT}" = "x" ]; then echo "ERROR: BOOT_MOUNT is not set. The boot-cd or boot-usb hook MUST" echo " be run before this one. This image was improperly built" exit 1 fi squashimg="${BOOT_MOUNT}/archlive.sqfs" if [ "${copytoram}" = "y" ]; then /bin/cat ${squashimg} > /tmpfs/archlive.sqfs squashimg="/tmpfs/archlive.sqfs" fi msg ":: Mounting squashfs image" /bin/modprobe -q squashfs >/dev/null 2>&1 /bin/mkdir -p /tmpfs/squashfs_root if ! /bin/losetup /dev/loop0 "${squashimg}" >/dev/null 2>&1; then echo "ERROR: Cannot mount loop device /dev/loop0...aborting" exit 1 fi /bin/mount -r -t squashfs /dev/loop0 /tmpfs/squashfs_root msg ":: Mounting root (union) filesystem" /bin/modprobe -q unionfs >/dev/null 2>&1 /bin/mount -t unionfs -o dirs=/tmpfs=rw none /real_root # TODO: some of this could be broken into functions LOOP_NUM="1" addon_dir="${BOOT_MOUNT}/addons" if [ -e "${addon_dir}/config" ]; then msg ":: Mounting addons" while read img mountpoint type; do # check if this line is a comment (starts with #) [ "${img#'#'}" != "${img}" ] && continue if [ "${type}" = "bind" ]; then msg " Binding ${img} to ${mountpoint}" mkdir -p /real_root${mountpoint} /bin/mount -o bind ${addon_dir}/$img /real_root${mountpoint} elif [ "${type}" = "squashfs" ]; then msg " Adding new union branch: ${img}" mkdir -p "/tmpfs/mnt/loop${LOOP_NUM}" if ! /bin/losetup "/dev/loop${LOOP_NUM}" ${addon_dir}/$img > /dev/null 2>&1; then echo "ERROR: Cannot mount loop device /dev/loop${LOOP_NUM}" echo " Couldn't mount all addons" break fi /bin/mount -r -t squashfs "/dev/loop${LOOP_NUM}" "/tmpfs/mnt/loop${LOOP_NUM}" /bin/mount -t unionfs -o remount,add=:/tmpfs/mnt/loop${LOOP_NUM}=ro none "/real_root" LOOP_NUM=$(( $LOOP_NUM + 1 )) fi done < ${addon_dir}/config fi /bin/mount -t unionfs -o remount,add=:/tmpfs/squashfs_root=ro none /real_root if [ -d /proc/sys/dev/cdrom ]; then echo 0 > /proc/sys/dev/cdrom/lock echo 1 > /proc/sys/dev/cdrom/autoeject fi if [ "${break}" = "y" ]; then echo ":: Break requested, type 'exit' to resume operation" echo " NOTE: klibc contains no 'ls' binary, use 'echo *' instead" PS1="ramfs$ " /bin/sh -i fi udevpid=$(/bin/minips -C udevd -o pid=) [ "x${udevpid}" != "x" ] && /bin/kill -9 $udevpid 2>&1 >/dev/null #Yep, we're bailing out here. We don't need kinit. msg ":: Passing control to Archlinux Initscripts...Please Wait" /bin/umount /sys /bin/umount /proc exec /bin/run-init -c /dev/console /real_root /sbin/init ${CMDLINE} } # vim:ft=sh:ts=4:sw=4:et: