trunk/mkinitrd/mkinitrd-livecd.sh

#!/bin/bash
# $Header: /home/cvsd/magellan-cvs/magellan-src/mkinitrd/mkinitrd-livecd.sh,v 1.2 2006-02-23 15:55:08 niro Exp $

# 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=5.0.8

MODULES=""
NOSTRIP=false

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

LINUXRC="/usr/lib/mkinitrd/linuxrc.sh"
MODULES_GENERIC="/usr/lib/mkinitrd/modules.generic"
MODULES_USB="/usr/lib/mkinitrd/modules.usb"
MODULES_SCSI="/usr/lib/mkinitrd/modules.scsi"
MODULES_SATA="/usr/lib/mkinitrd/modules.sata"

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 "        <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 } } \
		/^\/lib/ { 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

	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 ;;
		*)
			if [ -z "${target}" ]
			then
				target=$1
			elif [ -z "${kernel}" ]
			then
				kernel=$1
			else
				usage
			fi
			;;
	esac

	shift
done


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

# install busybox
echo "$(which busybox.mkinitrd)"
install -m0755 $(which busybox.mkinitrd) ${DEST}/bin/busybox || die
for i in '[' ash basename cat cut chroot clear cp dirname echo env false find \
	grep gunzip gzip init ln ls loadkmap losetup mkdir mknod modprobe more mount mv \
	pivot_root ps pwd rm rmdir sh sleep test touch true umount uname \
	xargs yes chmod chown
do
	# static links
	ln ${DEST}/bin/busybox ${DEST}/bin/${i} || die "${i}"
done

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

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

# install udev
cp -a /etc/udev ${DEST}/etc || die
install -m0755 /sbin/udev.static ${DEST}/bin/udev || die
install -m0755 /sbin/udevd.static ${DEST}/bin/udevd || die
install -m0755 /sbin/udevstart.static ${DEST}/bin/udevstart || die

# create some needed device nodes
mkdir ${DEST}/dev/mapper || die
mknod ${DEST}/dev/console c 5 1 || die
mknod ${DEST}/dev/null c 1 3 || die
mknod ${DEST}/dev/ram b 1 1 || die
mknod ${DEST}/dev/rtc c 10 135 || die
mknod ${DEST}/dev/systty c 4 0 || die
mknod ${DEST}/dev/tty c 5 0 || die
mknod ${DEST}/dev/zero c 1 5 || die
for ((i=0; i < 13; i++))
do
	mknod ${DEST}/dev/tty${i} c 4 ${i} || die "tty${i}"
done
for ((i=64; i < 68; i++))
do
	mknod ${DEST}/dev/ttyS$((${i} - 64)) c 4 ${i} || die "ttyS$((${i} - 64))"
done

## 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}"

# 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	333	#!/bin/bash
2	niro	336	# $Header: /home/cvsd/magellan-cvs/magellan-src/mkinitrd/mkinitrd-livecd.sh,v 1.2 2006-02-23 15:55:08 niro Exp $
3	niro	333
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=5.0.8
37
38			MODULES=""
39			NOSTRIP=false
40
41			[ -e /etc/conf.d/mkinitrd-livecd ] && . /etc/conf.d/mkinitrd-livecd
42
43	niro	336	LINUXRC="/usr/lib/mkinitrd/linuxrc.sh"
44			MODULES_GENERIC="/usr/lib/mkinitrd/modules.generic"
45			MODULES_USB="/usr/lib/mkinitrd/modules.usb"
46			MODULES_SCSI="/usr/lib/mkinitrd/modules.scsi"
47			MODULES_SATA="/usr/lib/mkinitrd/modules.sata"
48	niro	333
49			compress=1
50			allowmissing=""
51			target=""
52			kernel=""
53			force=""
54			verbose=""
55			img_vers=""
56			builtins=""
57			modulefile=/etc/modules.conf
58			rc=0
59
60			IMAGESIZE=4000
61			PRESCSIMODS="sd_mod"
62			fstab="/etc/fstab"
63
64			vg_list=""
65
66			die() { echo "Error: $@"; exit 1; }
67			add_initrd() { echo "$@" >> ${DEST}/init \|\| die; }
68
69			DEST="$(mktemp -d)"
70			IMAGE="$(mktemp)"
71
72			usage()
73			{
74			echo "usage: $(basename $0) [--version] [--help] [-v] [-f]"
75			echo " [--image-version] [--no-strip] [--nocompress]"
76			echo " <initrd-image> <kernel-version>"
77			echo
78			echo " (ex: $(basename $0) /boot/initrd-2.2.5-15.img 2.2.5-15)"
79
80			exit 0
81			}
82
83			moduledep()
84			{
85			if [ ! -f "/lib/modules/${kernel}/modules.dep" ]
86			then
87			die "No dep file found for kernel ${kernel}"
88			fi
89
90			echo "Looking for deps of module $1"
91			deps=$(awk 'BEGIN { searched=ARGV[2]; ARGV[2]=""; rc=1 } \
92			function modname(filename) { match(filename, /\/([^\/]+)\.k?o:?$/, ret); return ret[1] } \
93			function show() { if (orig == searched) { print dep; orig=""; rc=0; exit } } \
94			/^\/lib/ { show(); \
95			orig=modname($1); dep=""; \
96			if ($2) { for (i = 2; i <= NF; i++) { dep=sprintf("%s %s", dep, modname($i)); } } } \
97			/^ / { dep=sprintf("%s %s", dep, modname($1)); } \
98			END { show(); exit(rc) }' /lib/modules/${kernel}/modules.dep $1)
99			[ -n "${deps}" ] && echo ":${deps}" \|\| echo
100			}
101
102			findone() { /usr/bin/find "$@" \| /bin/awk '{ print $1; exit; }'; }
103			findall() { /usr/bin/find "$@"; }
104
105			findmodule()
106			{
107			skiperrors=""
108
109			if [[ $1 = --skiperrors ]]
110			then
111			skiperrors=--skiperrors
112			shift
113			fi
114
115			local modName=$1
116
117			if [ "${modName}" = "off" -o "${modName}" = "null" ]
118			then
119			return
120			fi
121
122			if [ $(echo ${modName} \| cut -b1) = "-" ]
123			then
124			skiperrors=--skiperrors
125			modName=$(echo ${modName} \| cut -b2-)
126			fi
127
128			case "${MODULES} " in
129			"/${modName}.ko ") return ;;
130			esac
131
132			if echo ${builtins} \| egrep -q '(^\| )'${modName}'( \|$)'
133			then
134			echo "module ${modName} assumed to be built in"
135			return
136			fi
137
138			# special cases
139			if [[ ${modName} = i2o_block ]]
140			then
141			findmodule i2o_core
142			findmodule -i2o_pci
143			modName="i2o_block"
144			elif [[ ${modName} = ppa ]]
145			then
146			findmodule parport
147			findmodule parport_pc
148			modName="ppa"
149			elif [[ ${modName} = sbp2 ]]
150			then
151			findmodule ieee1394
152			findmodule ohci1394
153			modName="sbp2"
154			else
155			moduledep ${modName}
156			for i in ${deps}
157			do
158			findmodule ${i}
159			done
160			fi
161
162			for modExt in o.gz o ko
163			do
164			for modDir in /lib/modules/${kernel}/updates /lib/modules/${kernel}
165			do
166			if [ -d ${modDir} ]
167			then
168			fmPath=$(findone ${modDir} -name ${modName}.${modExt})
169			if [ -f "${fmPath}" ]
170			then
171			break 2
172			fi
173			fi
174			done
175			done
176
177			if [ ! -f ${fmPath} ]
178			then
179			if [ -n "${skiperrors}" ]
180			then
181			return
182			fi
183
184			# ignore the absence of the scsi modules
185			for n in ${PRESCSIMODS}
186			do
187			if [[ ${n} = ${modName} ]]
188			then
189			return
190			fi
191			done
192
193			if [ -n "${allowmissing}" ]
194			then
195			echo "WARNING: No module ${modName} found for kernel ${kernel}, continuing anyway"
196			return
197			fi
198
199			die "No module ${modName} found for kernel ${kernel}, aborting."
200			fi
201
202			# only need to add each module once
203			MODULES="${MODULES} ${fmPath}"
204			}
205
206			install_kernel_modules()
207			{
208			local list="$1"
209			local module
210
211			while read module args
212			do
213			case "${module}" in
214			\#*\|"") continue ;;
215			esac
216
217			findmodule ${module}
218			done << EOF
219			$(cat ${list}; echo)
220			EOF
221
222			# create empty modules.lala file
223			:> ${DEST}/etc/$(basename ${list})
224
225			# install detected modules
226			echo "Coping your modules to '${DEST}/lib' ..."
227			for MODULE in ${MODULES}
228			do
229			if [ -x /usr/bin/strip ] && [[ ${NOSTRIP} = false ]]
230			then
231			/usr/bin/strip -g ${verbose} ${MODULE} -o ${DEST}/lib/$(basename ${MODULE}) \|\| die
232			else
233			cp ${verbose} -a ${MODULE} ${DEST}/lib \|\| die
234			fi
235
236			# generate modules load file
237			echo "$(basename ${MODULE} .ko)" >> ${DEST}/etc/$(basename ${list}) \|\| die
238			done
239
240			export ALL_MODULES="${ALL_MODULES} ${MODULES}"
241			unset MODULES
242			}
243
244			# need r00t privs
245			[[ $(id -u) != 0 ]] && die "you must be r00t."
246
247	niro	336	# enforce initramfs method as default
248			[[ -z ${IMAGE_TYPE} ]] && IMAGE_TYPE=initramfs
249
250	niro	333	while [ $# -gt 0 ]; do
251			case $1 in
252			--version)
253			echo "mkinitrd: version ${VERSION}"
254			exit 0
255			;;
256
257			-v) verbose=-v ;;
258			-f) force=1 ;;
259			--nocompress) compress="" ;;
260			--image-version) img_vers=yes ;;
261			--allow-missing) allowmissing=yes ;;
262			--noresume) noresume=1 ;;
263			--help) usage -n ;;
264			--initramfs) IMAGE_TYPE=initramfs ;;
265			--loopback) IMAGE_TYPE=loopback ;;
266			--no-strip) NOSTRIP=true ;;
267			*)
268			if [ -z "${target}" ]
269			then
270			target=$1
271			elif [ -z "${kernel}" ]
272			then
273			kernel=$1
274			else
275			usage
276			fi
277			;;
278			esac
279
280			shift
281			done
282
283
284			# create basic filesystem layout
285			install -d ${DEST}/{bin,dev,etc,lib,loopfs,proc,sys,sysroot} \|\| die
286
287			# install busybox
288			echo "$(which busybox.mkinitrd)"
289			install -m0755 $(which busybox.mkinitrd) ${DEST}/bin/busybox \|\| die
290			for i in '[' ash basename cat cut chroot clear cp dirname echo env false find \
291			grep gunzip gzip init ln ls loadkmap losetup mkdir mknod modprobe more mount mv \
292			pivot_root ps pwd rm rmdir sh sleep test touch true umount uname \
293			xargs yes chmod chown
294			do
295			# static links
296			ln ${DEST}/bin/busybox ${DEST}/bin/${i} \|\| die "${i}"
297			done
298
299			# install run-init
300			echo "$(which run-init.mkinitrd)"
301			install -m0755 $(which run-init.mkinitrd) ${DEST}/bin/run-init \|\| die
302
303			# install insmod.static
304			echo "$(which insmod.static)"
305			install -m0755 $(which insmod.static) ${DEST}/bin/insmod \|\| die
306
307			# install udev
308			cp -a /etc/udev ${DEST}/etc \|\| die
309			install -m0755 /sbin/udev.static ${DEST}/bin/udev \|\| die
310			install -m0755 /sbin/udevd.static ${DEST}/bin/udevd \|\| die
311			install -m0755 /sbin/udevstart.static ${DEST}/bin/udevstart \|\| die
312
313			# create some needed device nodes
314			mkdir ${DEST}/dev/mapper \|\| die
315			mknod ${DEST}/dev/console c 5 1 \|\| die
316			mknod ${DEST}/dev/null c 1 3 \|\| die
317			mknod ${DEST}/dev/ram b 1 1 \|\| die
318			mknod ${DEST}/dev/rtc c 10 135 \|\| die
319			mknod ${DEST}/dev/systty c 4 0 \|\| die
320			mknod ${DEST}/dev/tty c 5 0 \|\| die
321			mknod ${DEST}/dev/zero c 1 5 \|\| die
322			for ((i=0; i < 13; i++))
323			do
324			mknod ${DEST}/dev/tty${i} c 4 ${i} \|\| die "tty${i}"
325			done
326			for ((i=64; i < 68; i++))
327			do
328			mknod ${DEST}/dev/ttyS$((${i} - 64)) c 4 ${i} \|\| die "ttyS$((${i} - 64))"
329			done
330
331			## install kernel modules ##
332			# generic needed
333			install_kernel_modules "${MODULES_GENERIC}"
334
335			# usb
336			install_kernel_modules "${MODULES_USB}"
337
338			# scsi
339			install_kernel_modules "${MODULES_SCSI}"
340
341			# sata
342			install_kernel_modules "${MODULES_SATA}"
343
344			# show all modules
345			for i in ${ALL_MODULES}
346			do
347			echo ${i}
348			done
349
350			# install linuxrc
351			install -m0755 ${LINUXRC} ${DEST}/init \|\| die
352
353			# create the image
354			echo "Creating initrd image '${target}' ..."
355			if [[ ${IMAGE_TYPE} = initramfs ]]
356			then
357			(cd "${DEST}" ; find . \| cpio --quiet -o -H newc \| gzip -9 >${IMAGE})
358			cat ${IMAGE} > ${target} \|\| die
359			fi
360
361			if [[ ${IMAGE_TYPE} = loopback ]]
362			then
363			MOUNTTMP="$(mktemp -d)"
364
365			# create ext2 img
366			dd if=/dev/zero of=${IMAGE} bs=1024 count=${IMAGESIZE} &> /dev/null \|\| die
367			mke2fs -m 0 -i 1024 -F ${IMAGE} &> /dev/null \|\| die
368			mount -o loop ${IMAGE} ${MOUNTTMP} \|\| die
369			mv ${DEST}/* ${MOUNTTMP} \|\| die
370			umount ${MOUNTTMP} \|\| die
371			gzip -9 ${IMAGE} \|\| die
372			cat ${IMAGE}.gz > ${target} \|\| die
373			[ -d ${MOUNTTMP} ] && rm -rf ${MOUNTTMP}
374
375			# create inird dir for pivot_root
376			[ ! -d /initrd ] && { install -d /initrd \|\| die; }
377			fi
378
379			# clean up
380			[ -d ${DEST} ] && rm -rf ${DEST}
381			[ -f ${IMAGE} ] && rm -f ${IMAGE}
382
383			# all went ok at this point
384			exit 0