mkinitrd-magellan/livecd/mkinitrd-livecd.in

#!/bin/bash
# $Id$

# mkinitrd-livecd
#
# Copyright 2005 Red Hat, Inc.
#
# Written by Erik Troan <ewt@redhat.com>
#
# Contributors:
#	Elliot Lee <sopwith@cuc.edu>
#	Miguel de Icaza <miguel@nuclecu.unam.mx>
#	Christian 'Dr. Disk' Hechelmann <drdisk@ds9.au.s.shuttle.de>
#	Michael K. Johnson <johnsonm@redhat.com>
#	Pierre Habraken <Pierre.Habraken@ujf-grenoble.fr>
#	Jakub Jelinek <jakub@redhat.com>
#	Carlo Arenas Belon (carenas@chasqui.lared.net.pe>
#	Keith Owens <kaos@ocs.com.au>
#	Bernhard Rosenkraenzer <bero@redhat.com>
#	Matt Wilson <msw@redhat.com>
#       Trond Eivind Glomsrød <teg@redhat.com>
#       Jeremy Katz <katzj@redhat.com>
#       Preston Brown <pbrown@redhat.com>
#	Bill Nottingham <notting@redhat.com>
#       Guillaume Cottenceau <gc@mandrakesoft.com>
#	Peter Jones <pjones@redhat.com>

# heavily modified for magellan-linux by Niels Rogalla <niro@magellan-linux.de>

umask 0022
export MALLOC_PERTURB_=204

PATH=/sbin:/usr/sbin:/bin:/usr/bin:$PATH
export PATH

VERSION=%VERSIONTAG%

MODULES=""
NOSTRIP=false

[ -e /etc/conf.d/mkinitrd-livecd ] && . /etc/conf.d/mkinitrd-livecd

LIBDIR="%LIBDIR%"
LINUXRC="${LIBDIR}/mkinitrd/linuxrc.sh"
MODULES_GENERIC="${LIBDIR}/mkinitrd/modules.generic"
MODULES_USB="${LIBDIR}/mkinitrd/modules.usb"
MODULES_SCSI="${LIBDIR}/mkinitrd/modules.scsi"
MODULES_SATA="${LIBDIR}/mkinitrd/modules.sata"
MODULES_PATA="${LIBDIR}/mkinitrd/modules.pata"
MODULES_FRAMEBUFFER="${LIBDIR}/mkinitrd/modules.framebuffer"

compress=1
allowmissing=""
target=""
kernel=""
force=""
verbose=""
img_vers=""
builtins=""
modulefile=/etc/modules.conf
rc=0

IMAGESIZE=4000
PRESCSIMODS="sd_mod"
fstab="/etc/fstab"

vg_list=""

die() { echo "Error: $@"; exit 1; }
add_initrd() { echo "$@" >> ${DEST}/init || die; }

DEST="$(mktemp -d)"
IMAGE="$(mktemp)"

usage()
{
	echo "usage: $(basename $0) [--version] [--help] [-v] [-f]"
	echo "       [--image-version] [--no-strip] [--nocompress]"
	echo "       [--linuxrc /path/to/custom/linuxrc ]"
	echo "        <initrd-image> <kernel-version>"
	echo
	echo "       (ex: $(basename $0) /boot/initrd-2.2.5-15.img 2.2.5-15)"

	exit 0
}

moduledep()
{
	if [ ! -f "/lib/modules/${kernel}/modules.dep" ]
	then
		die "No dep file found for kernel ${kernel}"
	fi

	echo "Looking for deps of module $1"
	deps=$(awk 'BEGIN { searched=ARGV[2]; ARGV[2]=""; rc=1 } \
		function modname(filename) { match(filename, /\/([^\/]+)\.k?o:?$/, ret); return ret[1] } \
		function show() { if (orig == searched) { print dep; orig=""; rc=0; exit } } \
		/^.*kernel/ { show(); \
			orig=modname($1); dep=""; \
			if ($2) { for (i = 2; i <= NF; i++) { dep=sprintf("%s %s", dep, modname($i)); } } } \
		/^	/ { dep=sprintf("%s %s", dep, modname($1));  } \
		END      { show(); exit(rc) }' /lib/modules/${kernel}/modules.dep $1)
	[ -n "${deps}" ] && echo ":${deps}" || echo
}

findone() { /usr/bin/find "$@" | /bin/awk '{ print $1; exit; }'; }
findall() { /usr/bin/find "$@"; }

findmodule()
{
	skiperrors=""

	if [[ $1 = --skiperrors ]]
	then
		skiperrors=--skiperrors
		shift
	fi

	local modName=$1

	if [ "${modName}" = "off" -o "${modName}" = "null" ]
	then
		return
	fi

	if [ $(echo ${modName} | cut -b1) = "-" ]
	then
		skiperrors=--skiperrors
		modName=$(echo ${modName} | cut -b2-)
	fi

	case "${MODULES} " in
		*"/${modName}.ko "*) return ;;
	esac

	if echo ${builtins} | egrep -q '(^| )'${modName}'( |$)'
	then
		echo "module ${modName} assumed to be built in"
		return
	fi

	# special cases
	if [[ ${modName} = i2o_block ]]
	then
		findmodule i2o_core
		findmodule -i2o_pci
		modName="i2o_block"
	elif [[ ${modName} = ppa ]]
	then
		findmodule parport
		findmodule parport_pc
		modName="ppa"
	elif [[ ${modName} = sbp2 ]]
	then
		findmodule ieee1394
		findmodule ohci1394
		modName="sbp2"
	else
		moduledep ${modName}
		for i in ${deps}
		do
			findmodule ${i}
		done
	fi

	for modExt in o.gz o ko
	do
		for modDir in /lib/modules/${kernel}/updates /lib/modules/${kernel}
		do
			if [ -d ${modDir} ]
			then
				fmPath=$(findone ${modDir} -name ${modName}.${modExt})
				if [ -f "${fmPath}" ]
				then
					break 2
				fi
			fi
		done
	done

	if [ ! -f ${fmPath} ]
	then
		if [ -n "${skiperrors}" ]
		then
			return
		fi

		# ignore the absence of the scsi modules
		for n in ${PRESCSIMODS}
		do
			if [[ ${n} = ${modName} ]]
			then
				return
			fi
		done

		if [ -n "${allowmissing}" ]
		then
			echo "WARNING: No module ${modName} found for kernel ${kernel}, continuing anyway"
			return
		fi

		die "No module ${modName} found for kernel ${kernel}, aborting."
	fi

	# only need to add each module once
	MODULES="${MODULES} ${fmPath}"
}

install_kernel_modules()
{
	local list="$1"
	local module

	# no list found; return
	[[ -z ${list} ]] && return

	while read module args
	do
		case "${module}" in
			\#*|"") continue ;;
		esac

		findmodule ${module}
	done << EOF
$(cat ${list}; echo)
EOF

	# create empty modules.lala file
	:> ${DEST}/etc/$(basename ${list})

	# install detected modules
	echo "Coping your modules to '${DEST}/lib' ..."
	for MODULE in ${MODULES}
	do
		if [ -x /usr/bin/strip ] && [[ ${NOSTRIP} = false ]]
		then
			/usr/bin/strip -g ${verbose} ${MODULE} -o ${DEST}/lib/$(basename ${MODULE}) || die
		else
			cp ${verbose} -a ${MODULE} ${DEST}/lib || die
		fi

		# generate modules load file
		echo "$(basename ${MODULE} .ko)" >> ${DEST}/etc/$(basename ${list}) || die
	done

	export ALL_MODULES="${ALL_MODULES} ${MODULES}"
	unset MODULES
}

# need r00t privs
[[ $(id -u) != 0 ]] && die "you must be r00t."

# enforce initramfs method as default
[[ -z ${IMAGE_TYPE} ]] && IMAGE_TYPE=initramfs

while [ $# -gt 0 ]; do
	case $1 in
		--version)
			echo "mkinitrd: version ${VERSION}"
			exit 0
			;;

		-v) verbose=-v ;;
		-f) force=1 ;;
		--nocompress) compress="" ;;
		--image-version) img_vers=yes ;;
		--allow-missing) allowmissing=yes ;;
		--noresume) noresume=1 ;;
		--help) usage -n ;;
		--initramfs) IMAGE_TYPE=initramfs ;;
		--loopback) IMAGE_TYPE=loopback ;;
		--no-strip) NOSTRIP=true ;;
		--linuxrc) shift; LINUXRC="$1" ;;
		*)
			if [ -z "${target}" ]
			then
				target=$1
			elif [ -z "${kernel}" ]
			then
				kernel=$1
			else
				usage
			fi
			;;
	esac

	shift
done

# no kernel or target given
if [[ -z ${target} ]] || [[ -z ${kernel} ]]
then
	usage
fi

# die if linuxrc does not exist
[[ ! -e ${LINUXRC} ]] && die "linuxrc '${LINUXRC}' not found."

# create basic filesystem layout
install -d ${DEST}/{bin,dev,etc,lib,loopfs,proc,sbin,sys,sysroot,usr/bin,usr/sbin} || die

# install busybox
echo "$(which busybox.mkinitrd)"
install -m0755 $(which busybox.mkinitrd) ${DEST}/bin/busybox || die
for i in '[' ash basename cat cut clear cp dirname echo env false find \
	grep gunzip gzip ln ls loadkmap mkdir mknod more mount mv \
	ps pwd rm rmdir sh sleep test touch true umount uname \
	xargs yes chmod chown
do
	# use soft links from now on;
	# hardlinks in initramfs apears to be broken on newer kernels
	# -> "request module: runaway loop modprobe binfmt-0000"
	# see: http://www.gossamer-threads.com/lists/linux/kernel/728042
	ln -s /bin/busybox ${DEST}/bin/${i} || die "${i}"
done

# sbin related
for i in chroot init losetup modprobe pivot_root
do
	ln -s ${DEST}/bin/busybox ${DEST}/sbin/${i} || die "${i}"
done

# install run-init
echo "$(which run-init.mkinitrd)"
install -m0755 $(which run-init.mkinitrd) ${DEST}/sbin/run-init || die

# install insmod.static
#echo "$(which insmod.static)"
#install -m0755 $(which insmod.static) ${DEST}/sbin/insmod || die

# install v86d for uvesafb support if installed
if which v86d &> /dev/null
then
	echo "$(which v86d)"
	install -m0755 $(which v86d) ${DEST}/sbin/v86d || die
fi

## install kernel modules ##
# generic needed
install_kernel_modules "${MODULES_GENERIC}"

# usb
install_kernel_modules "${MODULES_USB}"

# scsi
install_kernel_modules "${MODULES_SCSI}"

# sata
install_kernel_modules "${MODULES_SATA}"

# pata
install_kernel_modules "${MODULES_PATA}"

# framebuffer
install_kernel_modules "${MODULES_FRAMEBUFFER}"

# show all modules
for i in ${ALL_MODULES}
do
	echo ${i}
done

# install linuxrc
install -m0755 ${LINUXRC} ${DEST}/init || die

# create the image
echo "Creating initrd image '${target}' ..."
if [[ ${IMAGE_TYPE} = initramfs ]]
then
	(cd "${DEST}" ; find . | cpio --quiet -o -H newc | gzip -9 >${IMAGE})
	cat ${IMAGE} > ${target} || die
fi

if [[ ${IMAGE_TYPE} = loopback ]]
then
	MOUNTTMP="$(mktemp -d)"

	# create ext2 img
	dd if=/dev/zero of=${IMAGE} bs=1024 count=${IMAGESIZE} &> /dev/null || die
	mke2fs -m 0 -i 1024 -F ${IMAGE} &> /dev/null || die
	mount -o loop ${IMAGE} ${MOUNTTMP} || die
	mv ${DEST}/* ${MOUNTTMP} || die
	umount ${MOUNTTMP} || die
	gzip -9 ${IMAGE} || die
	cat ${IMAGE}.gz > ${target} || die
	[ -d ${MOUNTTMP} ] && rm -rf ${MOUNTTMP}

	# create inird dir for pivot_root
	[ ! -d /initrd ] && { install -d /initrd || die; }
fi

# clean up
[ -d ${DEST} ] && rm -rf ${DEST}
[ -f ${IMAGE} ] && rm -f ${IMAGE}

# all went ok at this point
exit 0
1	niro	562	#!/bin/bash
2	niro	810	# $Id$
3	niro	562
4			# mkinitrd-livecd
5			#
6			# Copyright 2005 Red Hat, Inc.
7			#
8			# Written by Erik Troan <ewt@redhat.com>
9			#
10			# Contributors:
11			# Elliot Lee <sopwith@cuc.edu>
12			# Miguel de Icaza <miguel@nuclecu.unam.mx>
13			# Christian 'Dr. Disk' Hechelmann <drdisk@ds9.au.s.shuttle.de>
14			# Michael K. Johnson <johnsonm@redhat.com>
15			# Pierre Habraken <Pierre.Habraken@ujf-grenoble.fr>
16			# Jakub Jelinek <jakub@redhat.com>
17			# Carlo Arenas Belon (carenas@chasqui.lared.net.pe>
18			# Keith Owens <kaos@ocs.com.au>
19			# Bernhard Rosenkraenzer <bero@redhat.com>
20			# Matt Wilson <msw@redhat.com>
21			# Trond Eivind Glomsrød <teg@redhat.com>
22			# Jeremy Katz <katzj@redhat.com>
23			# Preston Brown <pbrown@redhat.com>
24			# Bill Nottingham <notting@redhat.com>
25			# Guillaume Cottenceau <gc@mandrakesoft.com>
26			# Peter Jones <pjones@redhat.com>
27
28			# heavily modified for magellan-linux by Niels Rogalla <niro@magellan-linux.de>
29
30			umask 0022
31			export MALLOC_PERTURB_=204
32
33			PATH=/sbin:/usr/sbin:/bin:/usr/bin:$PATH
34			export PATH
35
36			VERSION=%VERSIONTAG%
37
38			MODULES=""
39			NOSTRIP=false
40
41			[ -e /etc/conf.d/mkinitrd-livecd ] && . /etc/conf.d/mkinitrd-livecd
42
43			LIBDIR="%LIBDIR%"
44			LINUXRC="${LIBDIR}/mkinitrd/linuxrc.sh"
45			MODULES_GENERIC="${LIBDIR}/mkinitrd/modules.generic"
46			MODULES_USB="${LIBDIR}/mkinitrd/modules.usb"
47			MODULES_SCSI="${LIBDIR}/mkinitrd/modules.scsi"
48			MODULES_SATA="${LIBDIR}/mkinitrd/modules.sata"
49			MODULES_PATA="${LIBDIR}/mkinitrd/modules.pata"
50	niro	664	MODULES_FRAMEBUFFER="${LIBDIR}/mkinitrd/modules.framebuffer"
51	niro	562
52			compress=1
53			allowmissing=""
54			target=""
55			kernel=""
56			force=""
57			verbose=""
58			img_vers=""
59			builtins=""
60			modulefile=/etc/modules.conf
61			rc=0
62
63			IMAGESIZE=4000
64			PRESCSIMODS="sd_mod"
65			fstab="/etc/fstab"
66
67			vg_list=""
68
69			die() { echo "Error: $@"; exit 1; }
70			add_initrd() { echo "$@" >> ${DEST}/init \|\| die; }
71
72			DEST="$(mktemp -d)"
73			IMAGE="$(mktemp)"
74
75			usage()
76			{
77			echo "usage: $(basename $0) [--version] [--help] [-v] [-f]"
78			echo " [--image-version] [--no-strip] [--nocompress]"
79	niro	664	echo " [--linuxrc /path/to/custom/linuxrc ]"
80	niro	562	echo " <initrd-image> <kernel-version>"
81			echo
82			echo " (ex: $(basename $0) /boot/initrd-2.2.5-15.img 2.2.5-15)"
83
84			exit 0
85			}
86
87			moduledep()
88			{
89			if [ ! -f "/lib/modules/${kernel}/modules.dep" ]
90			then
91			die "No dep file found for kernel ${kernel}"
92			fi
93
94			echo "Looking for deps of module $1"
95			deps=$(awk 'BEGIN { searched=ARGV[2]; ARGV[2]=""; rc=1 } \
96			function modname(filename) { match(filename, /\/([^\/]+)\.k?o:?$/, ret); return ret[1] } \
97			function show() { if (orig == searched) { print dep; orig=""; rc=0; exit } } \
98	niro	845	/^.*kernel/ { show(); \
99	niro	562	orig=modname($1); dep=""; \
100			if ($2) { for (i = 2; i <= NF; i++) { dep=sprintf("%s %s", dep, modname($i)); } } } \
101			/^ / { dep=sprintf("%s %s", dep, modname($1)); } \
102			END { show(); exit(rc) }' /lib/modules/${kernel}/modules.dep $1)
103			[ -n "${deps}" ] && echo ":${deps}" \|\| echo
104			}
105
106			findone() { /usr/bin/find "$@" \| /bin/awk '{ print $1; exit; }'; }
107			findall() { /usr/bin/find "$@"; }
108
109			findmodule()
110			{
111			skiperrors=""
112
113			if [[ $1 = --skiperrors ]]
114			then
115			skiperrors=--skiperrors
116			shift
117			fi
118
119			local modName=$1
120
121			if [ "${modName}" = "off" -o "${modName}" = "null" ]
122			then
123			return
124			fi
125
126			if [ $(echo ${modName} \| cut -b1) = "-" ]
127			then
128			skiperrors=--skiperrors
129			modName=$(echo ${modName} \| cut -b2-)
130			fi
131
132			case "${MODULES} " in
133			"/${modName}.ko ") return ;;
134			esac
135
136			if echo ${builtins} \| egrep -q '(^\| )'${modName}'( \|$)'
137			then
138			echo "module ${modName} assumed to be built in"
139			return
140			fi
141
142			# special cases
143			if [[ ${modName} = i2o_block ]]
144			then
145			findmodule i2o_core
146			findmodule -i2o_pci
147			modName="i2o_block"
148			elif [[ ${modName} = ppa ]]
149			then
150			findmodule parport
151			findmodule parport_pc
152			modName="ppa"
153			elif [[ ${modName} = sbp2 ]]
154			then
155			findmodule ieee1394
156			findmodule ohci1394
157			modName="sbp2"
158			else
159			moduledep ${modName}
160			for i in ${deps}
161			do
162			findmodule ${i}
163			done
164			fi
165
166			for modExt in o.gz o ko
167			do
168			for modDir in /lib/modules/${kernel}/updates /lib/modules/${kernel}
169			do
170			if [ -d ${modDir} ]
171			then
172			fmPath=$(findone ${modDir} -name ${modName}.${modExt})
173			if [ -f "${fmPath}" ]
174			then
175			break 2
176			fi
177			fi
178			done
179			done
180
181			if [ ! -f ${fmPath} ]
182			then
183			if [ -n "${skiperrors}" ]
184			then
185			return
186			fi
187
188			# ignore the absence of the scsi modules
189			for n in ${PRESCSIMODS}
190			do
191			if [[ ${n} = ${modName} ]]
192			then
193			return
194			fi
195			done
196
197			if [ -n "${allowmissing}" ]
198			then
199			echo "WARNING: No module ${modName} found for kernel ${kernel}, continuing anyway"
200			return
201			fi
202
203			die "No module ${modName} found for kernel ${kernel}, aborting."
204			fi
205
206			# only need to add each module once
207			MODULES="${MODULES} ${fmPath}"
208			}
209
210			install_kernel_modules()
211			{
212			local list="$1"
213			local module
214
215	niro	664	# no list found; return
216			[[ -z ${list} ]] && return
217
218	niro	562	while read module args
219			do
220			case "${module}" in
221			\#*\|"") continue ;;
222			esac
223
224			findmodule ${module}
225			done << EOF
226			$(cat ${list}; echo)
227			EOF
228
229			# create empty modules.lala file
230			:> ${DEST}/etc/$(basename ${list})
231
232			# install detected modules
233			echo "Coping your modules to '${DEST}/lib' ..."
234			for MODULE in ${MODULES}
235			do
236			if [ -x /usr/bin/strip ] && [[ ${NOSTRIP} = false ]]
237			then
238			/usr/bin/strip -g ${verbose} ${MODULE} -o ${DEST}/lib/$(basename ${MODULE}) \|\| die
239			else
240			cp ${verbose} -a ${MODULE} ${DEST}/lib \|\| die
241			fi
242
243			# generate modules load file
244			echo "$(basename ${MODULE} .ko)" >> ${DEST}/etc/$(basename ${list}) \|\| die
245			done
246
247			export ALL_MODULES="${ALL_MODULES} ${MODULES}"
248			unset MODULES
249			}
250
251			# need r00t privs
252			[[ $(id -u) != 0 ]] && die "you must be r00t."
253
254			# enforce initramfs method as default
255			[[ -z ${IMAGE_TYPE} ]] && IMAGE_TYPE=initramfs
256
257			while [ $# -gt 0 ]; do
258			case $1 in
259			--version)
260			echo "mkinitrd: version ${VERSION}"
261			exit 0
262			;;
263
264			-v) verbose=-v ;;
265			-f) force=1 ;;
266			--nocompress) compress="" ;;
267			--image-version) img_vers=yes ;;
268			--allow-missing) allowmissing=yes ;;
269			--noresume) noresume=1 ;;
270			--help) usage -n ;;
271			--initramfs) IMAGE_TYPE=initramfs ;;
272			--loopback) IMAGE_TYPE=loopback ;;
273			--no-strip) NOSTRIP=true ;;
274	niro	664	--linuxrc) shift; LINUXRC="$1" ;;
275	niro	562	*)
276			if [ -z "${target}" ]
277			then
278			target=$1
279			elif [ -z "${kernel}" ]
280			then
281			kernel=$1
282			else
283			usage
284			fi
285			;;
286			esac
287
288			shift
289			done
290
291	niro	664	# no kernel or target given
292			if [[ -z ${target} ]] \|\| [[ -z ${kernel} ]]
293			then
294			usage
295			fi
296	niro	562
297	niro	664	# die if linuxrc does not exist
298			[[ ! -e ${LINUXRC} ]] && die "linuxrc '${LINUXRC}' not found."
299
300	niro	562	# create basic filesystem layout
301	niro	894	install -d ${DEST}/{bin,dev,etc,lib,loopfs,proc,sbin,sys,sysroot,usr/bin,usr/sbin} \|\| die
302	niro	562
303			# install busybox
304			echo "$(which busybox.mkinitrd)"
305			install -m0755 $(which busybox.mkinitrd) ${DEST}/bin/busybox \|\| die
306			for i in '[' ash basename cat cut clear cp dirname echo env false find \
307			grep gunzip gzip ln ls loadkmap mkdir mknod more mount mv \
308			ps pwd rm rmdir sh sleep test touch true umount uname \
309			xargs yes chmod chown
310			do
311			# use soft links from now on;
312			# hardlinks in initramfs apears to be broken on newer kernels
313			# -> "request module: runaway loop modprobe binfmt-0000"
314			# see: http://www.gossamer-threads.com/lists/linux/kernel/728042
315			ln -s /bin/busybox ${DEST}/bin/${i} \|\| die "${i}"
316			done
317
318			# sbin related
319			for i in chroot init losetup modprobe pivot_root
320			do
321	niro	894	ln -s ${DEST}/bin/busybox ${DEST}/sbin/${i} \|\| die "${i}"
322	niro	562	done
323
324			# install run-init
325			echo "$(which run-init.mkinitrd)"
326			install -m0755 $(which run-init.mkinitrd) ${DEST}/sbin/run-init \|\| die
327
328			# install insmod.static
329	niro	894	#echo "$(which insmod.static)"
330			#install -m0755 $(which insmod.static) ${DEST}/sbin/insmod \|\| die
331	niro	562
332	niro	703	# install v86d for uvesafb support if installed
333			if which v86d &> /dev/null
334			then
335	niro	894	echo "$(which v86d)"
336	niro	703	install -m0755 $(which v86d) ${DEST}/sbin/v86d \|\| die
337			fi
338
339	niro	562	## install kernel modules ##
340			# generic needed
341			install_kernel_modules "${MODULES_GENERIC}"
342
343			# usb
344			install_kernel_modules "${MODULES_USB}"
345
346			# scsi
347			install_kernel_modules "${MODULES_SCSI}"
348
349			# sata
350			install_kernel_modules "${MODULES_SATA}"
351
352			# pata
353			install_kernel_modules "${MODULES_PATA}"
354
355	niro	664	# framebuffer
356			install_kernel_modules "${MODULES_FRAMEBUFFER}"
357
358	niro	562	# show all modules
359			for i in ${ALL_MODULES}
360			do
361			echo ${i}
362			done
363
364			# install linuxrc
365			install -m0755 ${LINUXRC} ${DEST}/init \|\| die
366
367			# create the image
368			echo "Creating initrd image '${target}' ..."
369			if [[ ${IMAGE_TYPE} = initramfs ]]
370			then
371			(cd "${DEST}" ; find . \| cpio --quiet -o -H newc \| gzip -9 >${IMAGE})
372			cat ${IMAGE} > ${target} \|\| die
373			fi
374
375			if [[ ${IMAGE_TYPE} = loopback ]]
376			then
377			MOUNTTMP="$(mktemp -d)"
378
379			# create ext2 img
380			dd if=/dev/zero of=${IMAGE} bs=1024 count=${IMAGESIZE} &> /dev/null \|\| die
381			mke2fs -m 0 -i 1024 -F ${IMAGE} &> /dev/null \|\| die
382			mount -o loop ${IMAGE} ${MOUNTTMP} \|\| die
383			mv ${DEST}/* ${MOUNTTMP} \|\| die
384			umount ${MOUNTTMP} \|\| die
385			gzip -9 ${IMAGE} \|\| die
386			cat ${IMAGE}.gz > ${target} \|\| die
387			[ -d ${MOUNTTMP} ] && rm -rf ${MOUNTTMP}
388
389			# create inird dir for pivot_root
390			[ ! -d /initrd ] && { install -d /initrd \|\| die; }
391			fi
392
393			# clean up
394			[ -d ${DEST} ] && rm -rf ${DEST}
395			[ -f ${IMAGE} ] && rm -f ${IMAGE}
396
397			# all went ok at this point
398			exit 0