Annotation of /trunk/mkinitrd-magellan/livecd/mkinitrd-livecd

#!/bin/bash
# $Header: /home/cvsd/magellan-cvs/magellan-src/mkinitrd-magellan/livecd/mkinitrd-livecd,v 1.1 2007-09-01 22:44:23 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=%VERSIONTAG%

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"
MODULES_PATA="/usr/lib/mkinitrd/modules.pata"
MAKEDEV="/usr/lib/mkinitrd/MAKEDEV.sh"

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,sbin,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 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
	# static links
	ln ${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

# create some needed device nodes
install -o root -g root -m0754 ${MAKEDEV} ${DEST}/dev/MAKEDEV || die
( cd ${DEST}/dev; ./MAKEDEV -v generic-nopty)

## 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}"

# 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	532	#!/bin/bash
2			# $Header: /home/cvsd/magellan-cvs/magellan-src/mkinitrd-magellan/livecd/mkinitrd-livecd,v 1.1 2007-09-01 22:44:23 niro Exp $
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			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			MODULES_PATA="/usr/lib/mkinitrd/modules.pata"
49			MAKEDEV="/usr/lib/mkinitrd/MAKEDEV.sh"
50
51			compress=1
52			allowmissing=""
53			target=""
54			kernel=""
55			force=""
56			verbose=""
57			img_vers=""
58			builtins=""
59			modulefile=/etc/modules.conf
60			rc=0
61
62			IMAGESIZE=4000
63			PRESCSIMODS="sd_mod"
64			fstab="/etc/fstab"
65
66			vg_list=""
67
68			die() { echo "Error: $@"; exit 1; }
69			add_initrd() { echo "$@" >> ${DEST}/init \|\| die; }
70
71			DEST="$(mktemp -d)"
72			IMAGE="$(mktemp)"
73
74			usage()
75			{
76			echo "usage: $(basename $0) [--version] [--help] [-v] [-f]"
77			echo " [--image-version] [--no-strip] [--nocompress]"
78			echo " <initrd-image> <kernel-version>"
79			echo
80			echo " (ex: $(basename $0) /boot/initrd-2.2.5-15.img 2.2.5-15)"
81
82			exit 0
83			}
84
85			moduledep()
86			{
87			if [ ! -f "/lib/modules/${kernel}/modules.dep" ]
88			then
89			die "No dep file found for kernel ${kernel}"
90			fi
91
92			echo "Looking for deps of module $1"
93			deps=$(awk 'BEGIN { searched=ARGV[2]; ARGV[2]=""; rc=1 } \
94			function modname(filename) { match(filename, /\/([^\/]+)\.k?o:?$/, ret); return ret[1] } \
95			function show() { if (orig == searched) { print dep; orig=""; rc=0; exit } } \
96			/^\/lib/ { show(); \
97			orig=modname($1); dep=""; \
98			if ($2) { for (i = 2; i <= NF; i++) { dep=sprintf("%s %s", dep, modname($i)); } } } \
99			/^ / { dep=sprintf("%s %s", dep, modname($1)); } \
100			END { show(); exit(rc) }' /lib/modules/${kernel}/modules.dep $1)
101			[ -n "${deps}" ] && echo ":${deps}" \|\| echo
102			}
103
104			findone() { /usr/bin/find "$@" \| /bin/awk '{ print $1; exit; }'; }
105			findall() { /usr/bin/find "$@"; }
106
107			findmodule()
108			{
109			skiperrors=""
110
111			if [[ $1 = --skiperrors ]]
112			then
113			skiperrors=--skiperrors
114			shift
115			fi
116
117			local modName=$1
118
119			if [ "${modName}" = "off" -o "${modName}" = "null" ]
120			then
121			return
122			fi
123
124			if [ $(echo ${modName} \| cut -b1) = "-" ]
125			then
126			skiperrors=--skiperrors
127			modName=$(echo ${modName} \| cut -b2-)
128			fi
129
130			case "${MODULES} " in
131			"/${modName}.ko ") return ;;
132			esac
133
134			if echo ${builtins} \| egrep -q '(^\| )'${modName}'( \|$)'
135			then
136			echo "module ${modName} assumed to be built in"
137			return
138			fi
139
140			# special cases
141			if [[ ${modName} = i2o_block ]]
142			then
143			findmodule i2o_core
144			findmodule -i2o_pci
145			modName="i2o_block"
146			elif [[ ${modName} = ppa ]]
147			then
148			findmodule parport
149			findmodule parport_pc
150			modName="ppa"
151			elif [[ ${modName} = sbp2 ]]
152			then
153			findmodule ieee1394
154			findmodule ohci1394
155			modName="sbp2"
156			else
157			moduledep ${modName}
158			for i in ${deps}
159			do
160			findmodule ${i}
161			done
162			fi
163
164			for modExt in o.gz o ko
165			do
166			for modDir in /lib/modules/${kernel}/updates /lib/modules/${kernel}
167			do
168			if [ -d ${modDir} ]
169			then
170			fmPath=$(findone ${modDir} -name ${modName}.${modExt})
171			if [ -f "${fmPath}" ]
172			then
173			break 2
174			fi
175			fi
176			done
177			done
178
179			if [ ! -f ${fmPath} ]
180			then
181			if [ -n "${skiperrors}" ]
182			then
183			return
184			fi
185
186			# ignore the absence of the scsi modules
187			for n in ${PRESCSIMODS}
188			do
189			if [[ ${n} = ${modName} ]]
190			then
191			return
192			fi
193			done
194
195			if [ -n "${allowmissing}" ]
196			then
197			echo "WARNING: No module ${modName} found for kernel ${kernel}, continuing anyway"
198			return
199			fi
200
201			die "No module ${modName} found for kernel ${kernel}, aborting."
202			fi
203
204			# only need to add each module once
205			MODULES="${MODULES} ${fmPath}"
206			}
207
208			install_kernel_modules()
209			{
210			local list="$1"
211			local module
212
213			while read module args
214			do
215			case "${module}" in
216			\#*\|"") continue ;;
217			esac
218
219			findmodule ${module}
220			done << EOF
221			$(cat ${list}; echo)
222			EOF
223
224			# create empty modules.lala file
225			:> ${DEST}/etc/$(basename ${list})
226
227			# install detected modules
228			echo "Coping your modules to '${DEST}/lib' ..."
229			for MODULE in ${MODULES}
230			do
231			if [ -x /usr/bin/strip ] && [[ ${NOSTRIP} = false ]]
232			then
233			/usr/bin/strip -g ${verbose} ${MODULE} -o ${DEST}/lib/$(basename ${MODULE}) \|\| die
234			else
235			cp ${verbose} -a ${MODULE} ${DEST}/lib \|\| die
236			fi
237
238			# generate modules load file
239			echo "$(basename ${MODULE} .ko)" >> ${DEST}/etc/$(basename ${list}) \|\| die
240			done
241
242			export ALL_MODULES="${ALL_MODULES} ${MODULES}"
243			unset MODULES
244			}
245
246			# need r00t privs
247			[[ $(id -u) != 0 ]] && die "you must be r00t."
248
249			# enforce initramfs method as default
250			[[ -z ${IMAGE_TYPE} ]] && IMAGE_TYPE=initramfs
251
252			while [ $# -gt 0 ]; do
253			case $1 in
254			--version)
255			echo "mkinitrd: version ${VERSION}"
256			exit 0
257			;;
258
259			-v) verbose=-v ;;
260			-f) force=1 ;;
261			--nocompress) compress="" ;;
262			--image-version) img_vers=yes ;;
263			--allow-missing) allowmissing=yes ;;
264			--noresume) noresume=1 ;;
265			--help) usage -n ;;
266			--initramfs) IMAGE_TYPE=initramfs ;;
267			--loopback) IMAGE_TYPE=loopback ;;
268			--no-strip) NOSTRIP=true ;;
269			*)
270			if [ -z "${target}" ]
271			then
272			target=$1
273			elif [ -z "${kernel}" ]
274			then
275			kernel=$1
276			else
277			usage
278			fi
279			;;
280			esac
281
282			shift
283			done
284
285
286			# create basic filesystem layout
287			install -d ${DEST}/{bin,dev,etc,lib,loopfs,proc,sbin,sys,sysroot} \|\| die
288
289			# install busybox
290			echo "$(which busybox.mkinitrd)"
291			install -m0755 $(which busybox.mkinitrd) ${DEST}/bin/busybox \|\| die
292			for i in '[' ash basename cat cut clear cp dirname echo env false find \
293			grep gunzip gzip ln ls loadkmap mkdir mknod more mount mv \
294			ps pwd rm rmdir sh sleep test touch true umount uname \
295			xargs yes chmod chown
296			do
297			# use soft links from now on;
298			# hardlinks in initramfs apears to be broken on newer kernels
299			# -> "request module: runaway loop modprobe binfmt-0000"
300			# see: http://www.gossamer-threads.com/lists/linux/kernel/728042
301			ln -s /bin/busybox ${DEST}/bin/${i} \|\| die "${i}"
302			done
303
304			# sbin related
305			for i in chroot init losetup modprobe pivot_root
306			do
307			# static links
308			ln ${DEST}/bin/busybox ${DEST}/sbin/${i} \|\| die "${i}"
309			done
310
311			# install run-init
312			echo "$(which run-init.mkinitrd)"
313			install -m0755 $(which run-init.mkinitrd) ${DEST}/sbin/run-init \|\| die
314
315			# install insmod.static
316			echo "$(which insmod.static)"
317			install -m0755 $(which insmod.static) ${DEST}/sbin/insmod \|\| die
318
319			# create some needed device nodes
320			install -o root -g root -m0754 ${MAKEDEV} ${DEST}/dev/MAKEDEV \|\| die
321			( cd ${DEST}/dev; ./MAKEDEV -v generic-nopty)
322
323			## install kernel modules ##
324			# generic needed
325			install_kernel_modules "${MODULES_GENERIC}"
326
327			# usb
328			install_kernel_modules "${MODULES_USB}"
329
330			# scsi
331			install_kernel_modules "${MODULES_SCSI}"
332
333			# sata
334			install_kernel_modules "${MODULES_SATA}"
335
336			# pata
337			install_kernel_modules "${MODULES_PATA}"
338
339			# show all modules
340			for i in ${ALL_MODULES}
341			do
342			echo ${i}
343			done
344
345			# install linuxrc
346			install -m0755 ${LINUXRC} ${DEST}/init \|\| die
347
348			# create the image
349			echo "Creating initrd image '${target}' ..."
350			if [[ ${IMAGE_TYPE} = initramfs ]]
351			then
352			(cd "${DEST}" ; find . \| cpio --quiet -o -H newc \| gzip -9 >${IMAGE})
353			cat ${IMAGE} > ${target} \|\| die
354			fi
355
356			if [[ ${IMAGE_TYPE} = loopback ]]
357			then
358			MOUNTTMP="$(mktemp -d)"
359
360			# create ext2 img
361			dd if=/dev/zero of=${IMAGE} bs=1024 count=${IMAGESIZE} &> /dev/null \|\| die
362			mke2fs -m 0 -i 1024 -F ${IMAGE} &> /dev/null \|\| die
363			mount -o loop ${IMAGE} ${MOUNTTMP} \|\| die
364			mv ${DEST}/* ${MOUNTTMP} \|\| die
365			umount ${MOUNTTMP} \|\| die
366			gzip -9 ${IMAGE} \|\| die
367			cat ${IMAGE}.gz > ${target} \|\| die
368			[ -d ${MOUNTTMP} ] && rm -rf ${MOUNTTMP}
369
370			# create inird dir for pivot_root
371			[ ! -d /initrd ] && { install -d /initrd \|\| die; }
372			fi
373
374			# clean up
375			[ -d ${DEST} ] && rm -rf ${DEST}
376			[ -f ${IMAGE} ] && rm -f ${IMAGE}
377
378			# all went ok at this point
379			exit 0