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"
FIRMWARE_PATH="/lib/firmware"
FIRMWARE_FILES=""

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.?g?z?:?$/, 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 ;;
		*"/${modName}.ko.gz "*) 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 ko.gz
	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
		# handle gzip compressed modules right
		elif [[ ${MODULE##*.} = gz ]]
		then
			zcat ${verbose} ${MODULE} > ${DEST}/lib/$(basename ${MODULE} .gz) || die
			MODULE="${MODULE/.gz/}"
		else
			cp ${verbose} -a ${MODULE} ${DEST}/lib || die
		fi

		# generate modules load file
		local modname i
		modname="${MODULE##*/}"
		for i in .o .ko .gz
		do
			modname="${modname/${i}/}"
		done
		echo "${modname}" >> ${DEST}/etc/$(basename ${list}) || die

		# get and install firmware files if neccessary
		if [ -x $(which modinfo 2> /dev/null) ]
		then
			local firmware_blobs
			local firmware
			module=$(echo ${MODULE} | sed "s|.*/||" | sed -e "s/.k\?o.\?g\?z\?$//" -e "s/.gz//")
			firmware_blobs=$(modinfo -k ${kernel} ${module} | grep 'firmware:' | sed 's:^firmware\:.*[[:space:]]\(.*\):\1:')
			if [[ ! -z ${firmware_blobs} ]]
			then
				for firmware in ${firmware_blobs}
				do
					add_firmware "${firmware}"
				done
			fi
			if [[ ! -z ${FIRMWARE_FILES} ]]
			then
				for firmware in ${FIRMWARE_FILES}
				do
					if [ -e ${FIRMWARE_PATH}/${firmware} ]
					then
						echo "installing firmware '${firmware}'"
						install ${verbose} -d ${DEST}/${FIRMWARE_PATH}/${firmware%/*} || die
						cp ${verbose} -a ${FIRMWARE_PATH}/${firmware} ${DEST}/${FIRMWARE_PATH}/${firmware%/*} || die
					fi
				done
			fi
		else
			echo "Warning 'modinfo' not found"
		fi
	done

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

add_firmware()
{
	local firmware="$1"
	local i

	# check if given firmware is already included in FIRMWARE_FILES
	for i in ${FIRMWARE_FILES}
	do
		[[ ${firmware} = ${i} ]] && return 0
	done

	# include firmware
	FIRMWARE_FILES="${FIRMWARE_FILES} ${firmware}"
}

# 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	#!/bin/bash
2	# $Id$
3
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="${LIBDIR}/mkinitrd/modules.pata"
50	MODULES_FRAMEBUFFER="${LIBDIR}/mkinitrd/modules.framebuffer"
51	FIRMWARE_PATH="/lib/firmware"
52	FIRMWARE_FILES=""
53
54	compress=1
55	allowmissing=""
56	target=""
57	kernel=""
58	force=""
59	verbose=""
60	img_vers=""
61	builtins=""
62	modulefile=/etc/modules.conf
63	rc=0
64
65	IMAGESIZE=4000
66	PRESCSIMODS="sd_mod"
67	fstab="/etc/fstab"
68
69	vg_list=""
70
71	die() { echo "Error: $@"; exit 1; }
72	add_initrd() { echo "$@" >> ${DEST}/init \|\| die; }
73
74	DEST="$(mktemp -d)"
75	IMAGE="$(mktemp)"
76
77	usage()
78	{
79	echo "usage: $(basename $0) [--version] [--help] [-v] [-f]"
80	echo " [--image-version] [--no-strip] [--nocompress]"
81	echo " [--linuxrc /path/to/custom/linuxrc ]"
82	echo " <initrd-image> <kernel-version>"
83	echo
84	echo " (ex: $(basename $0) /boot/initrd-2.2.5-15.img 2.2.5-15)"
85
86	exit 0
87	}
88
89	moduledep()
90	{
91	if [ ! -f "/lib/modules/${kernel}/modules.dep" ]
92	then
93	die "No dep file found for kernel ${kernel}"
94	fi
95
96	echo "Looking for deps of module $1"
97	deps=$(awk 'BEGIN { searched=ARGV[2]; ARGV[2]=""; rc=1 } \
98	function modname(filename) { match(filename, /\/([^\/]+)\.k?o.?g?z?:?$/, ret); return ret[1] } \
99	function show() { if (orig == searched) { print dep; orig=""; rc=0; exit } } \
100	/^.*kernel/ { show(); \
101	orig=modname($1); dep=""; \
102	if ($2) { for (i = 2; i <= NF; i++) { dep=sprintf("%s %s", dep, modname($i)); } } } \
103	/^ / { dep=sprintf("%s %s", dep, modname($1)); } \
104	END { show(); exit(rc) }' /lib/modules/${kernel}/modules.dep $1)
105	[ -n "${deps}" ] && echo ":${deps}" \|\| echo
106	}
107
108	findone() { /usr/bin/find "$@" \| /bin/awk '{ print $1; exit; }'; }
109	findall() { /usr/bin/find "$@"; }
110
111	findmodule()
112	{
113	skiperrors=""
114
115	if [[ $1 = --skiperrors ]]
116	then
117	skiperrors=--skiperrors
118	shift
119	fi
120
121	local modName=$1
122
123	if [ "${modName}" = "off" -o "${modName}" = "null" ]
124	then
125	return
126	fi
127
128	if [ $(echo ${modName} \| cut -b1) = "-" ]
129	then
130	skiperrors=--skiperrors
131	modName=$(echo ${modName} \| cut -b2-)
132	fi
133
134	case "${MODULES} " in
135	"/${modName}.ko ") return ;;
136	"/${modName}.ko.gz ") return ;;
137	esac
138
139	if echo ${builtins} \| egrep -q '(^\| )'${modName}'( \|$)'
140	then
141	echo "module ${modName} assumed to be built in"
142	return
143	fi
144
145	# special cases
146	if [[ ${modName} = i2o_block ]]
147	then
148	findmodule i2o_core
149	findmodule -i2o_pci
150	modName="i2o_block"
151	elif [[ ${modName} = ppa ]]
152	then
153	findmodule parport
154	findmodule parport_pc
155	modName="ppa"
156	elif [[ ${modName} = sbp2 ]]
157	then
158	findmodule ieee1394
159	findmodule ohci1394
160	modName="sbp2"
161	else
162	moduledep ${modName}
163	for i in ${deps}
164	do
165	findmodule ${i}
166	done
167	fi
168
169	for modExt in o.gz o ko ko.gz
170	do
171	for modDir in /lib/modules/${kernel}/updates /lib/modules/${kernel}
172	do
173	if [ -d ${modDir} ]
174	then
175	fmPath=$(findone ${modDir} -name ${modName}.${modExt})
176	if [ -f "${fmPath}" ]
177	then
178	break 2
179	fi
180	fi
181	done
182	done
183
184	if [ ! -f ${fmPath} ]
185	then
186	if [ -n "${skiperrors}" ]
187	then
188	return
189	fi
190
191	# ignore the absence of the scsi modules
192	for n in ${PRESCSIMODS}
193	do
194	if [[ ${n} = ${modName} ]]
195	then
196	return
197	fi
198	done
199
200	if [ -n "${allowmissing}" ]
201	then
202	echo "WARNING: No module ${modName} found for kernel ${kernel}, continuing anyway"
203	return
204	fi
205
206	die "No module ${modName} found for kernel ${kernel}, aborting."
207	fi
208
209	# only need to add each module once
210	MODULES="${MODULES} ${fmPath}"
211	}
212
213	install_kernel_modules()
214	{
215	local list="$1"
216	local module
217
218	# no list found; return
219	[[ -z ${list} ]] && return
220
221	while read module args
222	do
223	case "${module}" in
224	\#*\|"") continue ;;
225	esac
226
227	findmodule ${module}
228	done << EOF
229	$(cat ${list}; echo)
230	EOF
231
232	# create empty modules.lala file
233	:> ${DEST}/etc/$(basename ${list})
234
235	# install detected modules
236	echo "Coping your modules to '${DEST}/lib' ..."
237	for MODULE in ${MODULES}
238	do
239	if [ -x /usr/bin/strip ] && [[ ${NOSTRIP} = false ]]
240	then
241	/usr/bin/strip -g ${verbose} ${MODULE} -o ${DEST}/lib/$(basename ${MODULE}) \|\| die
242	# handle gzip compressed modules right
243	elif [[ ${MODULE##*.} = gz ]]
244	then
245	zcat ${verbose} ${MODULE} > ${DEST}/lib/$(basename ${MODULE} .gz) \|\| die
246	MODULE="${MODULE/.gz/}"
247	else
248	cp ${verbose} -a ${MODULE} ${DEST}/lib \|\| die
249	fi
250
251	# generate modules load file
252	local modname i
253	modname="${MODULE##*/}"
254	for i in .o .ko .gz
255	do
256	modname="${modname/${i}/}"
257	done
258	echo "${modname}" >> ${DEST}/etc/$(basename ${list}) \|\| die
259
260	# get and install firmware files if neccessary
261	if [ -x $(which modinfo 2> /dev/null) ]
262	then
263	local firmware_blobs
264	local firmware
265	module=$(echo ${MODULE} \| sed "s\|.*/\|\|" \| sed -e "s/.k\?o.\?g\?z\?$//" -e "s/.gz//")
266	firmware_blobs=$(modinfo -k ${kernel} ${module} \| grep 'firmware:' \| sed 's:^firmware\:.[[:space:]]\(.\):\1:')
267	if [[ ! -z ${firmware_blobs} ]]
268	then
269	for firmware in ${firmware_blobs}
270	do
271	add_firmware "${firmware}"
272	done
273	fi
274	if [[ ! -z ${FIRMWARE_FILES} ]]
275	then
276	for firmware in ${FIRMWARE_FILES}
277	do
278	if [ -e ${FIRMWARE_PATH}/${firmware} ]
279	then
280	echo "installing firmware '${firmware}'"
281	install ${verbose} -d ${DEST}/${FIRMWARE_PATH}/${firmware%/*} \|\| die
282	cp ${verbose} -a ${FIRMWARE_PATH}/${firmware} ${DEST}/${FIRMWARE_PATH}/${firmware%/*} \|\| die
283	fi
284	done
285	fi
286	else
287	echo "Warning 'modinfo' not found"
288	fi
289	done
290
291	export ALL_MODULES="${ALL_MODULES} ${MODULES}"
292	unset MODULES
293	}
294
295	add_firmware()
296	{
297	local firmware="$1"
298	local i
299
300	# check if given firmware is already included in FIRMWARE_FILES
301	for i in ${FIRMWARE_FILES}
302	do
303	[[ ${firmware} = ${i} ]] && return 0
304	done
305
306	# include firmware
307	FIRMWARE_FILES="${FIRMWARE_FILES} ${firmware}"
308	}
309
310	# need r00t privs
311	[[ $(id -u) != 0 ]] && die "you must be r00t."
312
313	# enforce initramfs method as default
314	[[ -z ${IMAGE_TYPE} ]] && IMAGE_TYPE=initramfs
315
316	while [ $# -gt 0 ]; do
317	case $1 in
318	--version)
319	echo "mkinitrd: version ${VERSION}"
320	exit 0
321	;;
322
323	-v) verbose=-v ;;
324	-f) force=1 ;;
325	--nocompress) compress="" ;;
326	--image-version) img_vers=yes ;;
327	--allow-missing) allowmissing=yes ;;
328	--noresume) noresume=1 ;;
329	--help) usage -n ;;
330	--initramfs) IMAGE_TYPE=initramfs ;;
331	--loopback) IMAGE_TYPE=loopback ;;
332	--no-strip) NOSTRIP=true ;;
333	--linuxrc) shift; LINUXRC="$1" ;;
334	*)
335	if [ -z "${target}" ]
336	then
337	target=$1
338	elif [ -z "${kernel}" ]
339	then
340	kernel=$1
341	else
342	usage
343	fi
344	;;
345	esac
346
347	shift
348	done
349
350	# no kernel or target given
351	if [[ -z ${target} ]] \|\| [[ -z ${kernel} ]]
352	then
353	usage
354	fi
355
356	# die if linuxrc does not exist
357	[[ ! -e ${LINUXRC} ]] && die "linuxrc '${LINUXRC}' not found."
358
359	# create basic filesystem layout
360	install -d ${DEST}/{bin,dev,etc,lib,loopfs,proc,sbin,sys,sysroot,usr/bin,usr/sbin} \|\| die
361
362	# install busybox
363	echo "$(which busybox.mkinitrd)"
364	install -m0755 $(which busybox.mkinitrd) ${DEST}/bin/busybox \|\| die
365	for i in '[' ash basename cat cut clear cp dirname echo env false find \
366	grep gunzip gzip ln ls loadkmap mkdir mknod more mount mv \
367	ps pwd rm rmdir sh sleep test touch true umount uname \
368	xargs yes chmod chown
369	do
370	# use soft links from now on;
371	# hardlinks in initramfs apears to be broken on newer kernels
372	# -> "request module: runaway loop modprobe binfmt-0000"
373	# see: http://www.gossamer-threads.com/lists/linux/kernel/728042
374	ln -s /bin/busybox ${DEST}/bin/${i} \|\| die "${i}"
375	done
376
377	# sbin related
378	for i in chroot init losetup modprobe pivot_root
379	do
380	ln -s ${DEST}/bin/busybox ${DEST}/sbin/${i} \|\| die "${i}"
381	done
382
383	# install run-init
384	echo "$(which run-init.mkinitrd)"
385	install -m0755 $(which run-init.mkinitrd) ${DEST}/sbin/run-init \|\| die
386
387	# install insmod.static
388	#echo "$(which insmod.static)"
389	#install -m0755 $(which insmod.static) ${DEST}/sbin/insmod \|\| die
390
391	# install v86d for uvesafb support if installed
392	if which v86d &> /dev/null
393	then
394	echo "$(which v86d)"
395	install -m0755 $(which v86d) ${DEST}/sbin/v86d \|\| die
396	fi
397
398	## install kernel modules ##
399	# generic needed
400	install_kernel_modules "${MODULES_GENERIC}"
401
402	# usb
403	install_kernel_modules "${MODULES_USB}"
404
405	# scsi
406	install_kernel_modules "${MODULES_SCSI}"
407
408	# sata
409	install_kernel_modules "${MODULES_SATA}"
410
411	# pata
412	install_kernel_modules "${MODULES_PATA}"
413
414	# framebuffer
415	install_kernel_modules "${MODULES_FRAMEBUFFER}"
416
417	# show all modules
418	for i in ${ALL_MODULES}
419	do
420	echo ${i}
421	done
422
423	# install linuxrc
424	install -m0755 ${LINUXRC} ${DEST}/init \|\| die
425
426	# create the image
427	echo "Creating initrd image '${target}' ..."
428	if [[ ${IMAGE_TYPE} = initramfs ]]
429	then
430	(cd "${DEST}" ; find . \| cpio --quiet -o -H newc \| gzip -9 >${IMAGE})
431	cat ${IMAGE} > ${target} \|\| die
432	fi
433
434	if [[ ${IMAGE_TYPE} = loopback ]]
435	then
436	MOUNTTMP="$(mktemp -d)"
437
438	# create ext2 img
439	dd if=/dev/zero of=${IMAGE} bs=1024 count=${IMAGESIZE} &> /dev/null \|\| die
440	mke2fs -m 0 -i 1024 -F ${IMAGE} &> /dev/null \|\| die
441	mount -o loop ${IMAGE} ${MOUNTTMP} \|\| die
442	mv ${DEST}/* ${MOUNTTMP} \|\| die
443	umount ${MOUNTTMP} \|\| die
444	gzip -9 ${IMAGE} \|\| die
445	cat ${IMAGE}.gz > ${target} \|\| die
446	[ -d ${MOUNTTMP} ] && rm -rf ${MOUNTTMP}
447
448	# create inird dir for pivot_root
449	[ ! -d /initrd ] && { install -d /initrd \|\| die; }
450	fi
451
452	# clean up
453	[ -d ${DEST} ] && rm -rf ${DEST}
454	[ -f ${IMAGE} ] && rm -f ${IMAGE}
455
456	# all went ok at this point
457	exit 0