[projects/geninitrd.git] / geninitrd

#!/bin/sh

# geninitrd
#
#	by Jacek Konieczny <jajcus@pld.org.pl>
#
# based on mkinitrd written by Erik Troan <ewt@redhat.com>
# and 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 <jj@ultra.linux.cz>
#	Carlo Arenas Belon (carenas@chasqui.lared.net.pe>
#
PATH=/sbin:$PATH
export PATH

VERSION=%VERSIONTAG%

. /etc/rc.d/init.d/functions

COMPRESS="yes"
FS="rom"
PROBESCSI="yes"
PROBEIDE="yes"
PROBERAID="yes"
USEBSP="yes"

if [ -f /etc/sysconfig/initrd ] ; then
	. /etc/sysconfig/initrd
fi

target=""
kernel=""
force=""
verbose=""
MODULES=""
img_vers=""
modulefile=/etc/modules.conf
if [ `uname -m` = "ia64" ]; then
  IMAGESIZE=3000
else
  IMAGESIZE=1500
fi
PRESCSIMODS="scsi_mod unknown sd_mod"
PREIDEMODS="ide-mod ide-probe-mod ide-disk"
fstab="/etc/fstab"

usage () {
    echo "usage: `basename $0` [--version] [-v] [-f] [--ifneeded] [--preload <module>]" >&2
    echo "       [--omit-scsi-modules] [--omit-raid-modules] [--omit-ide-modules]" >&2
    echo "       [--with=<module>] [--image-version] [--fstab=<fstab>] [--nocompress]" >&2 
    echo "       [--fs=rom|ext2|cram] [--no-bsp]" >&2
    echo "       <initrd-image> <kernel-version>" >&2
    echo "       (ex: `basename $0` /boot/initrd-2.2.5-15.img 2.2.5-15)" >&2
    exit 1
}

findmodule() {
    skiperrors=""
    modName=$1
    if [ $(echo $modName | cut -b1) = "-" ]; then
	skiperrors=1
	modName=$(echo $modName | cut -b2-)
    fi

    if [ "$modName" = "pluto" ]; then
	findmodule fc4
	findmodule soc
    fi
    if [ "$modName" = "fcal" ]; then
	findmodule fc4
	findmodule socal
    fi

    fmPath=`(cd /lib/modules/$kernel; find -type f -name $modName.o)`

    if [ ! -f /lib/modules/$kernel/$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;
    
        # ignore the absence of the ide modules
	for n in $PREIDEMODS; do
	    if [ "$n" = "$modName" ]; then
		return;
	    fi
	done;
    
	echo "No module $modName found for kernel $kernel" >&2
	exit 1
    fi

    # only need to add each module once
    tmpFmPath=`echo $fmPath|awk -F/ '{for(i=1;i<NF;i++) { printf("%s\\/",$i); } { print $NF; }}'`
    if is_yes "`echo $MODULES | awk '/"'$tmpFmPath'"/ { print "yes"; }' `" ; then : ; else
	MODULES="$MODULES $fmPath"
    fi
}

inst() {
    if [ "$#" != "2" ];then
        echo "usage: inst <file> <destination>"
        return
    fi 
    [ -n "$verbose" ] && echo "$1 -> $2"
    cp $1 $2
}


while [ $# -gt 0 ]; do
    case $1 in
    	--no-bsp)
	    USEBSP="no"
	    ;;
	    
	--fstab*)
	    if is_yes "`echo $1 | awk '/=/ { print "yes"; }'`" ; then
	    	fstab=`echo $1 | awk -F= '{print $2;}'`
	    else
		fstab=$2
		shift
	    fi		    
	    ;;

	--with*)
	    if is_yes "`echo $1 | awk '/=/ { print "yes"; }'`" ; then
	    	modname=`echo $1 | awk -F= '{print $2;}'`
	    else
		modname=$2
		shift
	    fi		    

	    BASICMODULES="$BASICMODULES $modname"
	    ;;

	--version)
	    echo "geninitrd: version $VERSION"
	    exit 0
	    ;;

	-v)
	    verbose=-v
	    ;;

	--nocompress)
	    COMPRESS="no"
	    ;;

	--ifneeded)
	    ifneeded=1
	    ;;

	-f)
	    force=1
	    ;;
	--preload)
	    if is_yes "`echo $1 | awk '/=/ { print "yes"; }'`" ; then
	    	modname=`echo $1 | awk -F= '{print $2;}'`
	    else
		modname=$2
		shift
	    fi		    
	    PREMODS="$PREMODS $modname"
	    ;;
	--omit-scsi-modules)
	    PRESCSIMODS=""
	    PROBESCSI="no";
	    ;;
	--omit-raid-modules)
	    PROBERAID="no";
	    ;;
	--omit-ide-modules)
	    PROBEIDE="no";
	    ;;
	--fs)
	    FS=$2
	    shift
	    ;;
	--fs*)
	    FS=`echo $1 | awk -F= '{print $2;}'`
	    ;;
	--image-version)
	    img_vers=yes
	    ;;
	*)
	    if [ -z "$target" ]; then
		target=$1
	    elif [ -z "$kernel" ]; then
		kernel=$1
	    else
		usage
	    fi
	    ;;
    esac

    shift
done

if [ -z "$target" -o -z "$kernel" ]; then
    usage
fi

case "$FS" in
	ext2)
		if [ ! -x /sbin/mke2fs ]; then
			echo "mke2fs is missing"
			exit 1
		fi
		;;
	rom)
		if [ ! -x /sbin/genromfs ]; then
			echo "genromfs is missing"
			exit 1
		fi
		;;
	cram)
		if [ ! -x /sbin/mkcramfs ]; then
			echo "mkcramfs is missing"
			exit 1
		fi
		 ;;
	*)
		echo "Filesystem $FS not supported"
		exit 1
		;;
esac

if [ -n "$img_vers" ]; then
    target="$target-$kernel"
fi

if [ -z "$force" -a -f $target ]; then
    echo "$target already exists." >&2
    exit 1
fi

if [ ! -d /lib/modules/$kernel ]; then
    echo "/lib/modules/$kernel is not a directory." >&2
    exit 1
fi

for n in $PREMODS; do
	findmodule $n
done

rootdev=$(awk '{ if ($2 == "/") { print $1; }}' $fstab)
if is_yes "$PROBESCSI" && is_yes "`echo "$rootdev" | awk '/^\/dev\/sd/ { print "yes"; }'`" ; then

    for n in $PRESCSIMODS; do
	if [ "$n" = "unknown" ] ; then
    		if [ ! -f $modulefile ]; then
        		modulefile=/etc/conf.modules
    		fi
    		if [ -f $modulefile ]; then
			scsimodules=`awk '/scsi_hostadapter/ && ! /^[\t ]*#/ { print $3; }' $modulefile| LC_ALL=C sort -u`
			for n in $scsimodules; do
    		# for now allow scsi modules to come from anywhere.  There are some
    		# RAID controllers with drivers in block/
	    		findmodule $n
			done
    		fi
	else
	    findmodule $n
	fi
    done

fi

if is_yes "$PROBEIDE" && is_yes "`echo "$rootdev" | awk '/^\/dev\/hd/ { print "yes"; }'`" ; then
    for n in $PREIDEMODS; do
	    findmodule $n
    done
fi

if is_yes "$PROBERAID" ; then
    # load appropriate raid devices if necessary
    if is_yes "`awk '/^\/dev\/md/ && ! /noauto/ { print "yes"; }' $fstab`" ; then
	for number in $(awk '/^[\t ]*raid-level/ { print $2; }' /etc/raidtab | LC_ALL=C sort -u) ; do
	    case $number in
	    [0145])
		findmodule raid$number
		;;
	    *)
		echo "raid level $number (in /etc/raidtab) not recognized" >&2
		;;
	    esac
	done
    fi
fi

# check to see if we need to set up a loopback filesystem
if is_yes "`echo $rootdev | cut -d/ -f3 | awk '/loop/ { print "yes"; }'`" ; then
    if [ ! -x /sbin/losetup ]; then
	echo "losetup is missing"
	exit 1
    fi
    key="^# $(echo $rootdev | cut -d/ -f3 | tr '[a-z]' '[A-Z]'):"
    if ! is_yes "`awk '/'$key'/ { print( "yes"); }' $fstab`" ; then
	echo "The root filesystem is on a $rootdev, but there is no magic entry in $fstab" 1>&2
	echo "for this device. Consult the geninitrd man page for more information" 2>&2
	exit 1
    fi

    line=`awk '/'$key'/ { print $0; }' $fstab`
    loopDev=$(echo $line | awk '{print $3}')
    loopFs=$(echo $line | awk '{print $4}')
    loopFile=$(echo $line | awk '{print $5}')

    BASICMODULES="$BASICMODULES -loop"
    findmodule "-$loopFs"
    BASICMODULES="$BASICMODULES -${loopFs}"
    # don't have any clue, how is this supposed to work,
    # anyway no bsp
    USEBSP="no"
else # Check for other filesystems
    rootFs=`awk '{if ($2 == "/") {print $3}}' $fstab`
    findmodule "-$rootFs"
fi

for n in $BASICMODULES; do 
    findmodule $n
done

if [ -n "$ifneeded" -a -z "$MODULES" ]; then
    if [ -n "$verbose" ]; then
	echo "No modules are needed -- not building initrd image."
    fi
    exit 0
fi

if [ -n "$verbose" ]; then
    echo "Using modules: $MODULES"
fi

MNTIMAGE=`mktemp -d /tmp/initrd.XXXXXX`
IMAGE=`mktemp -u /tmp/initrd.img-XXXXXX`
MNTPOINT=`mktemp -d /tmp/initrd.mnt-XXXXXX`
RCFILE=$MNTIMAGE/linuxrc

if [ -f $MNTIMAGE ]; then
    echo "$MNTIMAGE already exists.  Remove it and try again" >&2
    exit 1
fi

if [ -f $IMAGE ]; then
    echo "$IMAGE already exists. Remove it and try again" >&2
    exit 1
fi

if [ "$FS" = "ext2" ] ; then
	dd if=/dev/zero of=$IMAGE bs=1k count=$IMAGESIZE 2> /dev/null

	# We have to "echo y |" so that it doesn't complain about $IMAGE not
	# being a block device
	echo y | mke2fs -F $IMAGE $IMAGESIZE >/dev/null 2>/dev/null

	mkdir -p $MNTPOINT
	mount -o loop -t ext2 $IMAGE $MNTPOINT 
else
	mkdir -p $MNTPOINT
fi


mkdir -p $MNTIMAGE/{lib,bin,etc,dev,loopfs}


# We don't need this directory, so let's save space
rm -rf $MNTPOINT/lost+found

for MODULE in $MODULES; do
    cp $verbose -a /lib/modules/$kernel/$MODULE $MNTIMAGE/lib
done

# mknod'ing the devices instead of copying them works both with and
# without devfs...
mknod $MNTIMAGE/dev/console c 5 1

if is_yes "$USEBSP" ; then
    s=$MNTIMAGE/etc/startup
    inst /sbin/bsp "$RCFILE"
    echo "# autogenerated startup" > $s
    echo "" >> $s
    
    for MODULE in $MODULES; do
        module=`echo $MODULE | awk -F/ '{ $0=$NF } /.o$/ { $0=substr($0,1,length($0)-2); } { print $0; }'`
        options=`awk '{ if($1 == "options" && $2 == "'${module}'") { for(i=3;i<=NF;i++) printf("%s ",$i); }}' $modulefile`
    
        if [ -n "$verbose" ]; then
            echo "Loading module $module with options $options"
        fi
        echo "insmod $module.o $options" >> $s
    done
else
    inst /bin/trash "$MNTIMAGE/bin/sh"
    inst /sbin/insmod.static "$MNTIMAGE/bin/insmod"
    
    mknod $MNTIMAGE/dev/null c 1 3
    mknod $MNTIMAGE/dev/ram b 1 1
    mknod $MNTIMAGE/dev/systty c 4 0
    for i in 1 2 3 4; do
        mknod $MNTIMAGE/dev/tty$i c 4 1
    done
    mknod $MNTIMAGE/dev/zero c 1 5
    
    echo "#!/bin/sh" > $RCFILE
    echo "" >> $RCFILE
    
    for MODULE in $MODULES; do
        module=`echo $MODULE | awk -F/ '{ $0=$NF } /.o$/ { $0=substr($0,1,length($0)-2); } { print $0; }'`
        options=`awk '{ if($1 == "options" && $2 == "'${module}'") { for(i=3;i<=NF;i++) printf("%s ",$i); }}' $modulefile`
    
        if [ -n "$verbose" ]; then
            echo "Loading module $module with options $options"
        fi
        echo "echo \"Loading $module module\"" >> $RCFILE
        echo "insmod /lib/$module.o $options" >> $RCFILE
    done
    
    if [ -n "$loopDev" ]; then
        if [ ! -d /initrd ]; then
    	mkdir /initrd
        fi
    
        cp -a $loopDev $MNTIMAGE/dev
        cp -a $rootdev $MNTIMAGE/dev
        echo "echo Mounting device containing loopback root filesystem" >> $RCFILE
        echo "mount -t $loopFs $loopDev /loopfs" >> $RCFILE
        echo "echo Setting up loopback device $rootdev" >> $RCFILE
        echo "losetup $rootdev /loopfs$loopFile" >> $RCFILE
    fi
fi

chmod +x $RCFILE

(cd $MNTIMAGE; tar cf - .) | (cd $MNTPOINT; tar xf -)

case "$FS" in
	ext2)
		umount $IMAGE
		;;
	rom)
		genromfs -f "$IMAGE" -d "$MNTPOINT" -V "PLD initrd for kernel $kernel"
		;;
	cram)
		mkcramfs "$MNTPOINT" "$IMAGE"
		;;
	*)
		echo "Filesystem $FS not supported by $0";
esac		

if is_yes "$COMPRESS" ; then
    gzip -9 < $IMAGE > $target
else
    cp -a $IMAGE $target
fi
rm -rf $MNTIMAGE $MNTPOINT $IMAGE
Commit	Line	Data
bb529f94 JK	1	#!/bin/sh
	2
	3	# geninitrd
	4	#
	5	# by Jacek Konieczny <jajcus@pld.org.pl>
	6	#
526ea24a	7	# based on mkinitrd written by Erik Troan <ewt@redhat.com>
bb529f94 JK	8	# and contributors:
	9	# Elliot Lee <sopwith@cuc.edu>
	10	# Miguel de Icaza <miguel@nuclecu.unam.mx>
	11	# Christian 'Dr. Disk' Hechelmann <drdisk@ds9.au.s.shuttle.de>
	12	# Michael K. Johnson <johnsonm@redhat.com>
	13	# Pierre Habraken <Pierre.Habraken@ujf-grenoble.fr>
	14	# Jakub Jelinek <jj@ultra.linux.cz>
	15	# Carlo Arenas Belon (carenas@chasqui.lared.net.pe>
	16	#
	17	PATH=/sbin:$PATH
	18	export PATH
	19
	20	VERSION=%VERSIONTAG%
	21
	22	. /etc/rc.d/init.d/functions
	23
	24	COMPRESS="yes"
	25	FS="rom"
	26	PROBESCSI="yes"
	27	PROBEIDE="yes"
	28	PROBERAID="yes"
a0a82190	29	USEBSP="yes"
bb529f94 JK	30
	31	if [ -f /etc/sysconfig/initrd ] ; then
	32	. /etc/sysconfig/initrd
	33	fi
	34
	35	target=""
	36	kernel=""
	37	force=""
	38	verbose=""
	39	MODULES=""
	40	img_vers=""
	41	modulefile=/etc/modules.conf
	42	if [ `uname -m` = "ia64" ]; then
	43	IMAGESIZE=3000
	44	else
	45	IMAGESIZE=1500
	46	fi
218614aa	47	PRESCSIMODS="scsi_mod unknown sd_mod"
bb529f94 JK	48	PREIDEMODS="ide-mod ide-probe-mod ide-disk"
	49	fstab="/etc/fstab"
	50
	51	usage () {
	52	echo "usage: `basename $0` [--version] [-v] [-f] [--ifneeded] [--preload <module>]" >&2
a0a82190 MM	53	echo " [--omit-scsi-modules] [--omit-raid-modules] [--omit-ide-modules]" >&2
	54	echo " [--with=<module>] [--image-version] [--fstab=<fstab>] [--nocompress]" >&2
	55	echo " [--fs=rom\|ext2\|cram] [--no-bsp]" >&2
bb529f94 JK	56	echo " <initrd-image> <kernel-version>" >&2
	57	echo " (ex: `basename $0` /boot/initrd-2.2.5-15.img 2.2.5-15)" >&2
	58	exit 1
	59	}
	60
	61	findmodule() {
	62	skiperrors=""
526ea24a	63	modName=$1
bb529f94 JK	64	if [ $(echo $modName \| cut -b1) = "-" ]; then
	65	skiperrors=1
	66	modName=$(echo $modName \| cut -b2-)
	67	fi
	68
	69	if [ "$modName" = "pluto" ]; then
526ea24a AF	70	findmodule fc4
526ea24a AF	71	findmodule soc
bb529f94 JK	72	fi
bb529f94 JK	73	if [ "$modName" = "fcal" ]; then
526ea24a AF	74	findmodule fc4
526ea24a AF	75	findmodule socal
bb529f94 JK	76	fi
bb529f94 JK	77
526ea24a	78	fmPath=`(cd /lib/modules/$kernel; find -type f -name $modName.o)`
bb529f94 JK	79
	80	if [ ! -f /lib/modules/$kernel/$fmPath ]; then
	81	if [ -n "$skiperrors" ]; then
	82	return
	83	fi
	84
	85	# ignore the absence of the scsi modules
	86	for n in $PRESCSIMODS; do
	87	if [ "$n" = "$modName" ]; then
	88	return;
	89	fi
	90	done;
	91
	92	# ignore the absence of the ide modules
	93	for n in $PREIDEMODS; do
	94	if [ "$n" = "$modName" ]; then
	95	return;
	96	fi
	97	done;
	98
	99	echo "No module $modName found for kernel $kernel" >&2
	100	exit 1
	101	fi
	102
	103	# only need to add each module once
474f647f	104	tmpFmPath=`echo $fmPath\|awk -F/ '{for(i=1;i<NF;i++) { printf("%s\\/",$i); } { print $NF; }}'`
474f647f	105	if is_yes "`echo $MODULES \| awk '/"'$tmpFmPath'"/ { print "yes"; }' `" ; then : ; else
bb529f94 JK	106	MODULES="$MODULES $fmPath"
	107	fi
	108	}
	109
	110	inst() {
	111	if [ "$#" != "2" ];then
	112	echo "usage: inst <file> <destination>"
	113	return
	114	fi
	115	[ -n "$verbose" ] && echo "$1 -> $2"
	116	cp $1 $2
	117	}
	118
	119
	120	while [ $# -gt 0 ]; do
	121	case $1 in
a0a82190 MM	122	--no-bsp)
	123	USEBSP="no"
	124	;;
	125
bb529f94	126	--fstab*)
474f647f	127	if is_yes "`echo $1 \| awk '/=/ { print "yes"; }'`" ; then
f5a2a23b	128	fstab=`echo $1 \| awk -F= '{print $2;}'`
bb529f94 JK	129	else
	130	fstab=$2
	131	shift
	132	fi
	133	;;
	134
	135	--with*)
474f647f	136	if is_yes "`echo $1 \| awk '/=/ { print "yes"; }'`" ; then
f5a2a23b	137	modname=`echo $1 \| awk -F= '{print $2;}'`
bb529f94 JK	138	else
	139	modname=$2
	140	shift
	141	fi
	142
	143	BASICMODULES="$BASICMODULES $modname"
	144	;;
	145
	146	--version)
	147	echo "geninitrd: version $VERSION"
	148	exit 0
	149	;;
	150
	151	-v)
	152	verbose=-v
	153	;;
	154
	155	--nocompress)
	156	COMPRESS="no"
	157	;;
	158
	159	--ifneeded)
	160	ifneeded=1
	161	;;
	162
	163	-f)
	164	force=1
	165	;;
	166	--preload)
474f647f	167	if is_yes "`echo $1 \| awk '/=/ { print "yes"; }'`" ; then
f5a2a23b	168	modname=`echo $1 \| awk -F= '{print $2;}'`
bb529f94 JK	169	else
	170	modname=$2
	171	shift
	172	fi
	173	PREMODS="$PREMODS $modname"
	174	;;
	175	--omit-scsi-modules)
	176	PRESCSIMODS=""
	177	PROBESCSI="no";
	178	;;
	179	--omit-raid-modules)
	180	PROBERAID="no";
	181	;;
	182	--omit-ide-modules)
	183	PROBEIDE="no";
	184	;;
06ac05d6	185	--fs)
03315813 AF	186	FS=$2
	187	shift
	188	;;
	189	--fs*)
f5a2a23b	190	FS=`echo $1 \| awk -F= '{print $2;}'`
bb529f94 JK	191	;;
	192	--image-version)
	193	img_vers=yes
	194	;;
	195	*)
	196	if [ -z "$target" ]; then
	197	target=$1
	198	elif [ -z "$kernel" ]; then
	199	kernel=$1
	200	else
	201	usage
	202	fi
	203	;;
	204	esac
	205
	206	shift
	207	done
	208
06ac05d6 AF	209	if [ -z "$target" -o -z "$kernel" ]; then
	210	usage
	211	fi
	212
8b1e4ac7 AF	213	case "$FS" in
8b1e4ac7 AF	214	ext2)
f5d71bb2 JK	215	if [ ! -x /sbin/mke2fs ]; then
f5d71bb2 JK	216	echo "mke2fs is missing"
8b1e4ac7 AF	217	exit 1
	218	fi
	219	;;
	220	rom)
	221	if [ ! -x /sbin/genromfs ]; then
	222	echo "genromfs is missing"
	223	exit 1
	224	fi
	225	;;
	226	cram)
	227	if [ ! -x /sbin/mkcramfs ]; then
	228	echo "mkcramfs is missing"
	229	exit 1
	230	fi
	231	;;
	232	*)
	233	echo "Filesystem $FS not supported"
	234	exit 1
	235	;;
	236	esac
bb529f94	237
bb529f94 JK	238	if [ -n "$img_vers" ]; then
	239	target="$target-$kernel"
	240	fi
	241
	242	if [ -z "$force" -a -f $target ]; then
	243	echo "$target already exists." >&2
	244	exit 1
	245	fi
	246
	247	if [ ! -d /lib/modules/$kernel ]; then
	248	echo "/lib/modules/$kernel is not a directory." >&2
	249	exit 1
	250	fi
	251
	252	for n in $PREMODS; do
526ea24a	253	findmodule $n
bb529f94 JK	254	done
	255
	256	rootdev=$(awk '{ if ($2 == "/") { print $1; }}' $fstab)
474f647f	257	if is_yes "$PROBESCSI" && is_yes "`echo "$rootdev" \| awk '/^\/dev\/sd/ { print "yes"; }'`" ; then
bb529f94 JK	258
bb529f94 JK	259	for n in $PRESCSIMODS; do
218614aa JK	260	if [ "$n" = "unknown" ] ; then
	261	if [ ! -f $modulefile ]; then
	262	modulefile=/etc/conf.modules
	263	fi
	264	if [ -f $modulefile ]; then
474f647f	265	scsimodules=`awk '/scsi_hostadapter/ && ! /^[\t ]*#/ { print $3; }' $modulefile\| LC_ALL=C sort -u`
218614aa JK	266	for n in $scsimodules; do
	267	# for now allow scsi modules to come from anywhere. There are some
	268	# RAID controllers with drivers in block/
526ea24a	269	findmodule $n
218614aa JK	270	done
	271	fi
	272	else
526ea24a	273	findmodule $n
218614aa	274	fi
bb529f94 JK	275	done
bb529f94 JK	276
bb529f94 JK	277	fi
bb529f94 JK	278
474f647f	279	if is_yes "$PROBEIDE" && is_yes "`echo "$rootdev" \| awk '/^\/dev\/hd/ { print "yes"; }'`" ; then
bb529f94	280	for n in $PREIDEMODS; do
526ea24a	281	findmodule $n
bb529f94 JK	282	done
	283	fi
	284
	285	if is_yes "$PROBERAID" ; then
	286	# load appropriate raid devices if necessary
474f647f	287	if is_yes "`awk '/^\/dev\/md/ && ! /noauto/ { print "yes"; }' $fstab`" ; then
474f647f	288	for number in $(awk '/^[\t ]*raid-level/ { print $2; }' /etc/raidtab \| LC_ALL=C sort -u) ; do
bb529f94 JK	289	case $number in
bb529f94 JK	290	[0145])
526ea24a	291	findmodule raid$number
bb529f94 JK	292	;;
	293	*)
	294	echo "raid level $number (in /etc/raidtab) not recognized" >&2
	295	;;
	296	esac
	297	done
	298	fi
	299	fi
	300
	301	# check to see if we need to set up a loopback filesystem
474f647f	302	if is_yes "`echo $rootdev \| cut -d/ -f3 \| awk '/loop/ { print "yes"; }'`" ; then
8dce5fcc JK	303	if [ ! -x /sbin/losetup ]; then
	304	echo "losetup is missing"
	305	exit 1
	306	fi
bb529f94	307	key="^# $(echo $rootdev \| cut -d/ -f3 \| tr '[a-z]' '[A-Z]'):"
474f647f	308	if ! is_yes "`awk '/'$key'/ { print( "yes"); }' $fstab`" ; then
bb529f94 JK	309	echo "The root filesystem is on a $rootdev, but there is no magic entry in $fstab" 1>&2
	310	echo "for this device. Consult the geninitrd man page for more information" 2>&2
	311	exit 1
	312	fi
	313
474f647f	314	line=`awk '/'$key'/ { print $0; }' $fstab`
bb529f94 JK	315	loopDev=$(echo $line \| awk '{print $3}')
	316	loopFs=$(echo $line \| awk '{print $4}')
	317	loopFile=$(echo $line \| awk '{print $5}')
	318
	319	BASICMODULES="$BASICMODULES -loop"
526ea24a	320	findmodule "-$loopFs"
bb529f94	321	BASICMODULES="$BASICMODULES -${loopFs}"
a0a82190 MM	322	# don't have any clue, how is this supposed to work,
	323	# anyway no bsp
	324	USEBSP="no"
2b9510ad MM	325	else # Check for other filesystems
	326	rootFs=`awk '{if ($2 == "/") {print $3}}' $fstab`
	327	findmodule "-$rootFs"
bb529f94 JK	328	fi
	329
	330	for n in $BASICMODULES; do
526ea24a	331	findmodule $n
bb529f94 JK	332	done
	333
	334	if [ -n "$ifneeded" -a -z "$MODULES" ]; then
	335	if [ -n "$verbose" ]; then
	336	echo "No modules are needed -- not building initrd image."
	337	fi
	338	exit 0
	339	fi
	340
	341	if [ -n "$verbose" ]; then
	342	echo "Using modules: $MODULES"
	343	fi
	344
675dbdde	345	MNTIMAGE=`mktemp -d /tmp/initrd.XXXXXX`
f5a2a23b	346	IMAGE=`mktemp -u /tmp/initrd.img-XXXXXX`
675dbdde	347	MNTPOINT=`mktemp -d /tmp/initrd.mnt-XXXXXX`
bb529f94 JK	348	RCFILE=$MNTIMAGE/linuxrc
	349
	350	if [ -f $MNTIMAGE ]; then
	351	echo "$MNTIMAGE already exists. Remove it and try again" >&2
	352	exit 1
	353	fi
	354
	355	if [ -f $IMAGE ]; then
	356	echo "$IMAGE already exists. Remove it and try again" >&2
	357	exit 1
	358	fi
	359
	360	if [ "$FS" = "ext2" ] ; then
	361	dd if=/dev/zero of=$IMAGE bs=1k count=$IMAGESIZE 2> /dev/null
	362
bb529f94 JK	363	# We have to "echo y \|" so that it doesn't complain about $IMAGE not
bb529f94 JK	364	# being a block device
f5d71bb2	365	echo y \| mke2fs -F $IMAGE $IMAGESIZE >/dev/null 2>/dev/null
bb529f94 JK	366
bb529f94 JK	367	mkdir -p $MNTPOINT
f5d71bb2	368	mount -o loop -t ext2 $IMAGE $MNTPOINT
bb529f94 JK	369	else
	370	mkdir -p $MNTPOINT
	371	fi
	372
8b1e4ac7 AF	373
	374	mkdir -p $MNTIMAGE/{lib,bin,etc,dev,loopfs}
	375
bb529f94 JK	376
	377	# We don't need this directory, so let's save space
	378	rm -rf $MNTPOINT/lost+found
	379
bb529f94 JK	380	for MODULE in $MODULES; do
	381	cp $verbose -a /lib/modules/$kernel/$MODULE $MNTIMAGE/lib
	382	done
	383
	384	# mknod'ing the devices instead of copying them works both with and
	385	# without devfs...
	386	mknod $MNTIMAGE/dev/console c 5 1
bb529f94	387
a0a82190 MM	388	if is_yes "$USEBSP" ; then
	389	s=$MNTIMAGE/etc/startup
	390	inst /sbin/bsp "$RCFILE"
	391	echo "# autogenerated startup" > $s
	392	echo "" >> $s
	393
	394	for MODULE in $MODULES; do
	395	module=`echo $MODULE \| awk -F/ '{ $0=$NF } /.o$/ { $0=substr($0,1,length($0)-2); } { print $0; }'`
	396	options=`awk '{ if($1 == "options" && $2 == "'${module}'") { for(i=3;i<=NF;i++) printf("%s ",$i); }}' $modulefile`
	397
	398	if [ -n "$verbose" ]; then
	399	echo "Loading module $module with options $options"
	400	fi
	401	echo "insmod $module.o $options" >> $s
	402	done
	403	else
	404	inst /bin/trash "$MNTIMAGE/bin/sh"
	405	inst /sbin/insmod.static "$MNTIMAGE/bin/insmod"
	406
	407	mknod $MNTIMAGE/dev/null c 1 3
	408	mknod $MNTIMAGE/dev/ram b 1 1
	409	mknod $MNTIMAGE/dev/systty c 4 0
	410	for i in 1 2 3 4; do
	411	mknod $MNTIMAGE/dev/tty$i c 4 1
	412	done
	413	mknod $MNTIMAGE/dev/zero c 1 5
	414
	415	echo "#!/bin/sh" > $RCFILE
	416	echo "" >> $RCFILE
	417
	418	for MODULE in $MODULES; do
	419	module=`echo $MODULE \| awk -F/ '{ $0=$NF } /.o$/ { $0=substr($0,1,length($0)-2); } { print $0; }'`
	420	options=`awk '{ if($1 == "options" && $2 == "'${module}'") { for(i=3;i<=NF;i++) printf("%s ",$i); }}' $modulefile`
	421
	422	if [ -n "$verbose" ]; then
	423	echo "Loading module $module with options $options"
	424	fi
	425	echo "echo \"Loading $module module\"" >> $RCFILE
	426	echo "insmod /lib/$module.o $options" >> $RCFILE
	427	done
	428
	429	if [ -n "$loopDev" ]; then
	430	if [ ! -d /initrd ]; then
	431	mkdir /initrd
	432	fi
	433
	434	cp -a $loopDev $MNTIMAGE/dev
	435	cp -a $rootdev $MNTIMAGE/dev
	436	echo "echo Mounting device containing loopback root filesystem" >> $RCFILE
	437	echo "mount -t $loopFs $loopDev /loopfs" >> $RCFILE
	438	echo "echo Setting up loopback device $rootdev" >> $RCFILE
	439	echo "losetup $rootdev /loopfs$loopFile" >> $RCFILE
bb529f94	440	fi
bb529f94 JK	441	fi
	442
	443	chmod +x $RCFILE
	444
	445	(cd $MNTIMAGE; tar cf - .) \| (cd $MNTPOINT; tar xf -)
	446
8b1e4ac7 AF	447	case "$FS" in
8b1e4ac7 AF	448	ext2)
f5d71bb2	449	umount $IMAGE
8b1e4ac7 AF	450	;;
	451	rom)
	452	genromfs -f "$IMAGE" -d "$MNTPOINT" -V "PLD initrd for kernel $kernel"
	453	;;
	454	cram)
	455	mkcramfs "$MNTPOINT" "$IMAGE"
8b1e4ac7 AF	456	;;
	457	*)
	458	echo "Filesystem $FS not supported by $0";
	459	esac
bb529f94 JK	460
	461	if is_yes "$COMPRESS" ; then
	462	gzip -9 < $IMAGE > $target
	463	else
	464	cp -a $IMAGE $target
	465	fi
	466	rm -rf $MNTIMAGE $MNTPOINT $IMAGE