[thirdparty/dracut.git] / lsinitrd.sh

#!/bin/bash
#
# Copyright 2005-2010 Harald Hoyer <harald@redhat.com>
# Copyright 2005-2010 Red Hat, Inc.  All rights reserved.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.
#

usage()
{
    {
        echo "Usage: ${0##*/} [options] [<initramfs file> [<filename> [<filename> [...] ]]]"
        echo "Usage: ${0##*/} [options] -k <kernel version>"
        echo
        echo "-h, --help                  print a help message and exit."
        echo "-s, --size                  sort the contents of the initramfs by size."
        echo "-m, --mod                   list modules."
        echo "-f, --file <filename>       print the contents of <filename>."
        echo "--unpack                    unpack the initramfs, instead of displaying the contents."
        echo "                            If optional filenames are given, will only unpack specified files,"
        echo "                            else the whole image will be unpacked. Won't unpack anything from early cpio part."
        echo "--unpackearly               unpack the early microcode part of the initramfs."
        echo "                            Same as --unpack, but only unpack files from early cpio part."
        echo "-v, --verbose               unpack verbosely."
        echo "-k, --kver <kernel version> inspect the initramfs of <kernel version>."
        echo
    } >&2
}


[[ $dracutbasedir ]] || dracutbasedir=/usr/lib/dracut

sorted=0
modules=0
unset verbose
declare -A filenames

unset POSIXLY_CORRECT
TEMP=$(getopt \
    -o "vshmf:k:" \
    --long kver: \
    --long file: \
    --long mod \
    --long help \
    --long size \
    --long unpack \
    --long unpackearly \
    --long verbose \
    -- "$@")

if (( $? != 0 )); then
    usage
    exit 1
fi

eval set -- "$TEMP"

while (($# > 0)); do
    case $1 in
        -k|--kver)     KERNEL_VERSION="$2"; shift;;
        -f|--file)     filenames[${2#/}]=1; shift;;
        -s|--size)     sorted=1;;
        -h|--help)     usage; exit 0;;
        -m|--mod)      modules=1;;
        -v|--verbose)  verbose="--verbose";;
        --unpack)      unpack=1;;
        --unpackearly) unpackearly=1;;
        --)            shift;break;;
        *)             usage; exit 1;;
    esac
    shift
done

[[ $KERNEL_VERSION ]] || KERNEL_VERSION="$(uname -r)"

if [[ $1 ]]; then
    image="$1"
    if ! [[ -f "$image" ]]; then
        {
            echo "$image does not exist"
            echo
        } >&2
        usage
        exit 1
    fi
else
    [[ -f /etc/machine-id ]] && read MACHINE_ID < /etc/machine-id

    if [[ -d /efi/loader/entries || -L /efi/loader/entries ]] \
        && [[ $MACHINE_ID ]] \
        && [[ -d /efi/${MACHINE_ID} || -L /efi/${MACHINE_ID} ]] ; then
        image="/efi/${MACHINE_ID}/${KERNEL_VERSION}/initrd"
    elif [[ -d /boot/loader/entries || -L /boot/loader/entries ]] \
        && [[ $MACHINE_ID ]] \
        && [[ -d /boot/${MACHINE_ID} || -L /boot/${MACHINE_ID} ]] ; then
        image="/boot/${MACHINE_ID}/${KERNEL_VERSION}/initrd"
    else
        image="/boot/initramfs-${KERNEL_VERSION}.img"
    fi
fi

shift
while (($# > 0)); do
    filenames[${1#/}]=1;
    shift
done

if ! [[ -f "$image" ]]; then
    {
        echo "No <initramfs file> specified and the default image '$image' cannot be accessed!"
        echo
    } >&2
    usage
    exit 1
fi

TMPDIR="$(mktemp -d -t lsinitrd.XXXXXX)"
trap "rm -rf '$TMPDIR'" EXIT

dracutlibdirs() {
    for d in lib64/dracut lib/dracut usr/lib64/dracut usr/lib/dracut; do
        echo "$d/$1"
    done
}

extract_files()
{
    (( ${#filenames[@]} == 1 )) && nofileinfo=1
    for f in "${!filenames[@]}"; do
        [[ $nofileinfo ]] || echo "initramfs:/$f"
        [[ $nofileinfo ]] || echo "========================================================================"
        $CAT "$image" 2>/dev/null | cpio --extract --verbose --quiet --to-stdout "$f" 2>/dev/null
        ((ret+=$?))
        [[ $nofileinfo ]] || echo "========================================================================"
        [[ $nofileinfo ]] || echo
    done
}

list_modules()
{
    echo "dracut modules:"
    $CAT "$image" | cpio --extract --verbose --quiet --to-stdout -- \
        $(dracutlibdirs modules.txt) 2>/dev/null
    ((ret+=$?))
}

list_files()
{
    echo "========================================================================"
    if [ "$sorted" -eq 1 ]; then
        $CAT "$image" 2>/dev/null | cpio --extract --verbose --quiet --list | sort -n -k5
    else
        $CAT "$image" 2>/dev/null | cpio --extract --verbose --quiet --list | sort -k9
    fi
    ((ret+=$?))
    echo "========================================================================"
}

list_squash_content()
{
    SQUASH_IMG="squash/root.img"
    SQUASH_TMPFILE="$TMPDIR/initrd.root.sqsh"

    $CAT "$image" 2>/dev/null | cpio --extract --verbose --quiet --to-stdout -- \
        $SQUASH_IMG > "$SQUASH_TMPFILE" 2>/dev/null
    if [[ -s $SQUASH_TMPFILE ]]; then
        echo "Squashed content ($SQUASH_IMG):"
        echo "========================================================================"
        unsquashfs -ll "$SQUASH_TMPFILE" | tail -n +4
        echo "========================================================================"
    fi
}

unpack_files()
{
    if (( ${#filenames[@]} > 0 )); then
        for f in "${!filenames[@]}"; do
            $CAT "$image" 2>/dev/null | cpio -id --quiet $verbose $f
            ((ret+=$?))
        done
    else
        $CAT "$image" 2>/dev/null | cpio -id --quiet $verbose
        ((ret+=$?))
    fi
}

read -N 2 bin < "$image"
if [ "$bin" = "MZ" ]; then
    command -v objcopy > /dev/null || { echo "Need 'objcopy' to unpack an UEFI executable."; exit 1; }
    objcopy \
        --dump-section .linux="$TMPDIR/vmlinuz" \
        --dump-section .initrd="$TMPDIR/initrd.img" \
        --dump-section .cmdline="$TMPDIR/cmdline.txt" \
        --dump-section .osrel="$TMPDIR/osrel.txt" \
        "$image" /dev/null
    uefi="$image"
    image="$TMPDIR/initrd.img"
    [ -f "$image" ] || exit 1
fi

if (( ${#filenames[@]} <= 0 )) && [[ -z "$unpack" ]] && [[ -z "$unpackearly" ]]; then
    if [ -n "$uefi" ]; then
        echo -n "initrd in UEFI: $uefi: "
        du -h $image | while read a b || [ -n "$a" ]; do echo $a;done
        if [ -f "$TMPDIR/osrel.txt" ]; then
            name=$(sed -En '/^PRETTY_NAME/ s/^\w+=["'"'"']?([^"'"'"'$]*)["'"'"']?/\1/p' "$TMPDIR/osrel.txt")
            id=$(sed -En '/^ID/ s/^\w+=["'"'"']?([^"'"'"'$]*)["'"'"']?/\1/p' "$TMPDIR/osrel.txt")
            build=$(sed -En '/^BUILD_ID/ s/^\w+=["'"'"']?([^"'"'"'$]*)["'"'"']?/\1/p' "$TMPDIR/osrel.txt")
            echo "OS Release: $name (${id}-${build})"
        fi
        if [ -f "$TMPDIR/vmlinuz" ]; then
            version=$(strings -n 20 "$TMPDIR/vmlinuz" | sed -En '/[0-9]+\.[0-9]+\.[0-9]+/ { p; q 0 }')
            echo "Kernel Version: $version"
        fi
        if [ -f "$TMPDIR/cmdline.txt" ]; then
            echo "Command line:"
            sed -En 's/\s+/\n/g; s/\x00/\n/; p' "$TMPDIR/cmdline.txt"
        fi
    else
        echo -n "Image: $image: "
        du -h $image | while read a b || [ -n "$a" ]; do echo $a;done
    fi

    echo "========================================================================"
fi

read -N 6 bin < "$image"
case $bin in
    $'\x71\xc7'*|070701)
        CAT="cat --"
        is_early=$(cpio --extract --verbose --quiet --to-stdout -- 'early_cpio' < "$image" 2>/dev/null)
        # Debian mkinitramfs does not create the file 'early_cpio', so let's check if firmware files exist
        [[ "$is_early" ]] || is_early=$(cpio --list --verbose --quiet --to-stdout -- 'kernel/*/microcode/*.bin' < "$image" 2>/dev/null)
        if [[ "$is_early" ]]; then
            if [[ -n "$unpack" ]]; then
                # should use --unpackearly for early CPIO
                :
            elif [[ -n "$unpackearly" ]]; then
                unpack_files
            elif (( ${#filenames[@]} > 0 )); then
                extract_files
            else
                echo "Early CPIO image"
                list_files
            fi
            if [[ -d "$dracutbasedir/skipcpio" ]]; then
                SKIP="$dracutbasedir/skipcpio/skipcpio"
            else
                SKIP="$dracutbasedir/skipcpio"
            fi
            if ! [[ -x $SKIP ]]; then
                echo
                echo "'$SKIP' not found, cannot display remaining contents!" >&2
                echo
                exit 0
            fi
        fi
        ;;
esac

if [[ $SKIP ]] ; then
    bin="$($SKIP "$image" | { read -N 6 bin && echo "$bin" ; })"
else
    read -N 6 bin < "$image"
fi
case $bin in
    $'\x1f\x8b'*)
        CAT="zcat --"
        ;;
    BZh*)
        CAT="bzcat --"
        ;;
    $'\x71\xc7'*|070701)
        CAT="cat --"
        ;;
    $'\x02\x21'*)
        CAT="lz4 -d -c"
        ;;
    $'\x89'LZO$'\0'*)
        CAT="lzop -d -c"
        ;;
    $'\x28\xB5\x2F\xFD'*)
        CAT="zstd -d -c"
        ;;
    *)
        if echo "test"|xz|xzcat --single-stream >/dev/null 2>&1; then
            CAT="xzcat --single-stream --"
        else
            CAT="xzcat --"
        fi
        ;;
esac

skipcpio()
{
    $SKIP "$@" | $ORIG_CAT
}

if [[ $SKIP ]]; then
    ORIG_CAT="$CAT"
    CAT=skipcpio
fi

if (( ${#filenames[@]} > 1 )); then
    TMPFILE="$TMPDIR/initrd.cpio"
    $CAT "$image" 2>/dev/null > $TMPFILE
    pre_decompress()
    {
        cat $TMPFILE
    }
    CAT=pre_decompress
fi

ret=0

if [[ -n "$unpack" ]]; then
    unpack_files
elif (( ${#filenames[@]} > 0 )); then
    extract_files
else
    version=$($CAT "$image" | cpio --extract --verbose --quiet --to-stdout -- \
        $(dracutlibdirs 'dracut-*') 2>/dev/null)
    ((ret+=$?))
    echo "Version: $version"
    echo
    if [ "$modules" -eq 1 ]; then
        list_modules
        echo "========================================================================"
    else
        echo -n "Arguments: "
        $CAT "$image" | cpio --extract --verbose --quiet --to-stdout -- \
            $(dracutlibdirs build-parameter.txt) 2>/dev/null
        echo
        list_modules
        list_files
        list_squash_content
    fi
fi

exit $ret
Commit	Line	Data
3b403b32	1	#!/bin/bash
cc02093d HH	2	#
	3	# Copyright 2005-2010 Harald Hoyer <harald@redhat.com>
	4	# Copyright 2005-2010 Red Hat, Inc. All rights reserved.
	5	#
	6	# This program is free software; you can redistribute it and/or modify
	7	# it under the terms of the GNU General Public License as published by
	8	# the Free Software Foundation; either version 2 of the License, or
	9	# (at your option) any later version.
	10	#
	11	# This program is distributed in the hope that it will be useful,
	12	# but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	14	# GNU General Public License for more details.
	15	#
	16	# You should have received a copy of the GNU General Public License
	17	# along with this program. If not, see <http://www.gnu.org/licenses/>.
	18	#
074d12c1	19
f7bccf37 HH	20	usage()
f7bccf37 HH	21	{
dde2db3d	22	{
7d9bb76a HH	23	echo "Usage: ${0##*/} [options] [<initramfs file> [<filename> [<filename> [...] ]]]"
7d9bb76a HH	24	echo "Usage: ${0##*/} [options] -k <kernel version>"
dde2db3d	25	echo
7d9bb76a HH	26	echo "-h, --help print a help message and exit."
7d9bb76a HH	27	echo "-s, --size sort the contents of the initramfs by size."
05d2a145	28	echo "-m, --mod list modules."
7d9bb76a	29	echo "-f, --file <filename> print the contents of <filename>."
97bbba69	30	echo "--unpack unpack the initramfs, instead of displaying the contents."
143420bc KS	31	echo " If optional filenames are given, will only unpack specified files,"
143420bc KS	32	echo " else the whole image will be unpacked. Won't unpack anything from early cpio part."
97bbba69	33	echo "--unpackearly unpack the early microcode part of the initramfs."
143420bc	34	echo " Same as --unpack, but only unpack files from early cpio part."
97bbba69	35	echo "-v, --verbose unpack verbosely."
7d9bb76a	36	echo "-k, --kver <kernel version> inspect the initramfs of <kernel version>."
dde2db3d HH	37	echo
dde2db3d HH	38	} >&2
f7bccf37 HH	39	}
f7bccf37 HH	40
b208aad5 HH	41
	42	[[ $dracutbasedir ]] \|\| dracutbasedir=/usr/lib/dracut
	43
3ea5d2e2	44	sorted=0
05d2a145	45	modules=0
97bbba69	46	unset verbose
7d9bb76a HH	47	declare -A filenames
	48
	49	unset POSIXLY_CORRECT
	50	TEMP=$(getopt \
97bbba69	51	-o "vshmf:k:" \
7d9bb76a HH	52	--long kver: \
7d9bb76a HH	53	--long file: \
05d2a145	54	--long mod \
7d9bb76a HH	55	--long help \
7d9bb76a HH	56	--long size \
97bbba69 HH	57	--long unpack \
	58	--long unpackearly \
	59	--long verbose \
7d9bb76a HH	60	-- "$@")
	61
	62	if (( $? != 0 )); then
	63	usage
	64	exit 1
	65	fi
	66
	67	eval set -- "$TEMP"
	68
	69	while (($# > 0)); do
	70	case $1 in
97bbba69 HH	71	-k\|--kver) KERNEL_VERSION="$2"; shift;;
	72	-f\|--file) filenames[${2#/}]=1; shift;;
	73	-s\|--size) sorted=1;;
	74	-h\|--help) usage; exit 0;;
	75	-m\|--mod) modules=1;;
	76	-v\|--verbose) verbose="--verbose";;
	77	--unpack) unpack=1;;
	78	--unpackearly) unpackearly=1;;
	79	--) shift;break;;
	80	*) usage; exit 1;;
3ea5d2e2	81	esac
7d9bb76a	82	shift
3ea5d2e2	83	done
3ea5d2e2	84
7d9bb76a	85	[[ $KERNEL_VERSION ]] \|\| KERNEL_VERSION="$(uname -r)"
dde2db3d	86
7d9bb76a	87	if [[ $1 ]]; then
dde2db3d HH	88	image="$1"
	89	if ! [[ -f "$image" ]]; then
	90	{
	91	echo "$image does not exist"
	92	echo
	93	} >&2
	94	usage
	95	exit 1
	96	fi
dde2db3d	97	else
727e68d0 HH	98	[[ -f /etc/machine-id ]] && read MACHINE_ID < /etc/machine-id
727e68d0 HH	99
093bc9b5 JG	100	if [[ -d /efi/loader/entries \|\| -L /efi/loader/entries ]] \
	101	&& [[ $MACHINE_ID ]] \
	102	&& [[ -d /efi/${MACHINE_ID} \|\| -L /efi/${MACHINE_ID} ]] ; then
	103	image="/efi/${MACHINE_ID}/${KERNEL_VERSION}/initrd"
	104	elif [[ -d /boot/loader/entries \|\| -L /boot/loader/entries ]] \
7d9bb76a HH	105	&& [[ $MACHINE_ID ]] \
7d9bb76a HH	106	&& [[ -d /boot/${MACHINE_ID} \|\| -L /boot/${MACHINE_ID} ]] ; then
727e68d0 HH	107	image="/boot/${MACHINE_ID}/${KERNEL_VERSION}/initrd"
727e68d0 HH	108	else
d928724c	109	image="/boot/initramfs-${KERNEL_VERSION}.img"
727e68d0	110	fi
dde2db3d HH	111	fi
dde2db3d HH	112
7d9bb76a HH	113	shift
	114	while (($# > 0)); do
	115	filenames[${1#/}]=1;
	116	shift
	117	done
727e68d0	118
dde2db3d HH	119	if ! [[ -f "$image" ]]; then
	120	{
	121	echo "No <initramfs file> specified and the default image '$image' cannot be accessed!"
	122	echo
	123	} >&2
	124	usage
	125	exit 1
	126	fi
074d12c1	127
cbf32008 MR	128	TMPDIR="$(mktemp -d -t lsinitrd.XXXXXX)"
	129	trap "rm -rf '$TMPDIR'" EXIT
	130
d3be9275 AŻ	131	dracutlibdirs() {
	132	for d in lib64/dracut lib/dracut usr/lib64/dracut usr/lib/dracut; do
	133	echo "$d/$1"
	134	done
	135	}
	136
b208aad5 HH	137	extract_files()
	138	{
	139	(( ${#filenames[@]} == 1 )) && nofileinfo=1
3721635b	140	for f in "${!filenames[@]}"; do
b208aad5 HH	141	[[ $nofileinfo ]] \|\| echo "initramfs:/$f"
b208aad5 HH	142	[[ $nofileinfo ]] \|\| echo "========================================================================"
8379784a	143	$CAT "$image" 2>/dev/null \| cpio --extract --verbose --quiet --to-stdout "$f" 2>/dev/null
b208aad5 HH	144	((ret+=$?))
	145	[[ $nofileinfo ]] \|\| echo "========================================================================"
	146	[[ $nofileinfo ]] \|\| echo
	147	done
	148	}
	149
05d2a145 HB	150	list_modules()
	151	{
	152	echo "dracut modules:"
d3be9275 AŻ	153	$CAT "$image" \| cpio --extract --verbose --quiet --to-stdout -- \
d3be9275 AŻ	154	$(dracutlibdirs modules.txt) 2>/dev/null
05d2a145 HB	155	((ret+=$?))
	156	}
	157
b208aad5 HH	158	list_files()
	159	{
	160	echo "========================================================================"
	161	if [ "$sorted" -eq 1 ]; then
bce6823a	162	$CAT "$image" 2>/dev/null \| cpio --extract --verbose --quiet --list \| sort -n -k5
b208aad5	163	else
bce6823a	164	$CAT "$image" 2>/dev/null \| cpio --extract --verbose --quiet --list \| sort -k9
b208aad5 HH	165	fi
	166	((ret+=$?))
	167	echo "========================================================================"
	168	}
	169
1ff306a3 KS	170	list_squash_content()
	171	{
	172	SQUASH_IMG="squash/root.img"
cbf32008 MR	173	SQUASH_TMPFILE="$TMPDIR/initrd.root.sqsh"
cbf32008 MR	174
1ff306a3 KS	175	$CAT "$image" 2>/dev/null \| cpio --extract --verbose --quiet --to-stdout -- \
	176	$SQUASH_IMG > "$SQUASH_TMPFILE" 2>/dev/null
	177	if [[ -s $SQUASH_TMPFILE ]]; then
	178	echo "Squashed content ($SQUASH_IMG):"
	179	echo "========================================================================"
	180	unsquashfs -ll "$SQUASH_TMPFILE" \| tail -n +4
	181	echo "========================================================================"
	182	fi
	183	}
	184
97bbba69 HH	185	unpack_files()
97bbba69 HH	186	{
f81c864e KS	187	if (( ${#filenames[@]} > 0 )); then
	188	for f in "${!filenames[@]}"; do
	189	$CAT "$image" 2>/dev/null \| cpio -id --quiet $verbose $f
	190	((ret+=$?))
	191	done
	192	else
	193	$CAT "$image" 2>/dev/null \| cpio -id --quiet $verbose
	194	((ret+=$?))
	195	fi
97bbba69 HH	196	}
97bbba69 HH	197
cbf32008 MR	198	read -N 2 bin < "$image"
	199	if [ "$bin" = "MZ" ]; then
	200	command -v objcopy > /dev/null \|\| { echo "Need 'objcopy' to unpack an UEFI executable."; exit 1; }
	201	objcopy \
	202	--dump-section .linux="$TMPDIR/vmlinuz" \
	203	--dump-section .initrd="$TMPDIR/initrd.img" \
	204	--dump-section .cmdline="$TMPDIR/cmdline.txt" \
	205	--dump-section .osrel="$TMPDIR/osrel.txt" \
	206	"$image" /dev/null
	207	uefi="$image"
	208	image="$TMPDIR/initrd.img"
	209	[ -f "$image" ] \|\| exit 1
	210	fi
b208aad5	211
97bbba69	212	if (( ${#filenames[@]} <= 0 )) && [[ -z "$unpack" ]] && [[ -z "$unpackearly" ]]; then
32dfd416	213	if [ -n "$uefi" ]; then
cbf32008 MR	214	echo -n "initrd in UEFI: $uefi: "
	215	du -h $image \| while read a b \|\| [ -n "$a" ]; do echo $a;done
	216	if [ -f "$TMPDIR/osrel.txt" ]; then
	217	name=$(sed -En '/^PRETTY_NAME/ s/^\w+=["'"'"']?([^"'"'"'$]*)["'"'"']?/\1/p' "$TMPDIR/osrel.txt")
	218	id=$(sed -En '/^ID/ s/^\w+=["'"'"']?([^"'"'"'$]*)["'"'"']?/\1/p' "$TMPDIR/osrel.txt")
	219	build=$(sed -En '/^BUILD_ID/ s/^\w+=["'"'"']?([^"'"'"'$]*)["'"'"']?/\1/p' "$TMPDIR/osrel.txt")
	220	echo "OS Release: $name (${id}-${build})"
	221	fi
	222	if [ -f "$TMPDIR/vmlinuz" ]; then
	223	version=$(strings -n 20 "$TMPDIR/vmlinuz" \| sed -En '/[0-9]+\.[0-9]+\.[0-9]+/ { p; q 0 }')
	224	echo "Kernel Version: $version"
	225	fi
	226	if [ -f "$TMPDIR/cmdline.txt" ]; then
	227	echo "Command line:"
	228	sed -En 's/\s+/\n/g; s/\x00/\n/; p' "$TMPDIR/cmdline.txt"
	229	fi
	230	else
	231	echo -n "Image: $image: "
	232	du -h $image \| while read a b \|\| [ -n "$a" ]; do echo $a;done
	233	fi
	234
b208aad5 HH	235	echo "========================================================================"
	236	fi
	237
884e1cda	238	read -N 6 bin < "$image"
b208aad5 HH	239	case $bin in
b208aad5 HH	240	$'\x71\xc7'*\|070701)
18a5011f	241	CAT="cat --"
b208aad5	242	is_early=$(cpio --extract --verbose --quiet --to-stdout -- 'early_cpio' < "$image" 2>/dev/null)
ce62465c TM	243	# Debian mkinitramfs does not create the file 'early_cpio', so let's check if firmware files exist
ce62465c TM	244	[[ "$is_early" ]] \|\| is_early=$(cpio --list --verbose --quiet --to-stdout -- 'kernel//microcode/.bin' < "$image" 2>/dev/null)
b208aad5	245	if [[ "$is_early" ]]; then
f81c864e KS	246	if [[ -n "$unpack" ]]; then
	247	# should use --unpackearly for early CPIO
	248	:
	249	elif [[ -n "$unpackearly" ]]; then
97bbba69 HH	250	unpack_files
97bbba69 HH	251	elif (( ${#filenames[@]} > 0 )); then
b208aad5 HH	252	extract_files
	253	else
	254	echo "Early CPIO image"
	255	list_files
	256	fi
98fd0693 HH	257	if [[ -d "$dracutbasedir/skipcpio" ]]; then
	258	SKIP="$dracutbasedir/skipcpio/skipcpio"
	259	else
	260	SKIP="$dracutbasedir/skipcpio"
	261	fi
b208aad5 HH	262	if ! [[ -x $SKIP ]]; then
	263	echo
	264	echo "'$SKIP' not found, cannot display remaining contents!" >&2
	265	echo
	266	exit 0
	267	fi
	268	fi
	269	;;
	270	esac
	271
3ce14286 HD	272	if [[ $SKIP ]] ; then
	273	bin="$($SKIP "$image" \| { read -N 6 bin && echo "$bin" ; })"
	274	else
	275	read -N 6 bin < "$image"
	276	fi
	277	case $bin in
	278	$'\x1f\x8b'*)
	279	CAT="zcat --"
	280	;;
	281	BZh*)
	282	CAT="bzcat --"
	283	;;
	284	$'\x71\xc7'*\|070701)
18a5011f	285	CAT="cat --"
3ce14286 HD	286	;;
	287	$'\x02\x21'*)
	288	CAT="lz4 -d -c"
	289	;;
	290	$'\x89'LZO$'\0'*)
	291	CAT="lzop -d -c"
	292	;;
ebfd53e1	293	$'\x28\xB5\x2F\xFD'*)
7dbadcc7 TPG	294	CAT="zstd -d -c"
7dbadcc7 TPG	295	;;
3ce14286 HD	296	*)
	297	if echo "test"\|xz\|xzcat --single-stream >/dev/null 2>&1; then
	298	CAT="xzcat --single-stream --"
fd9f9024	299	else
3ce14286 HD	300	CAT="xzcat --"
	301	fi
	302	;;
	303	esac
66fe35eb	304
b208aad5 HH	305	skipcpio()
	306	{
	307	$SKIP "$@" \| $ORIG_CAT
	308	}
	309
	310	if [[ $SKIP ]]; then
	311	ORIG_CAT="$CAT"
	312	CAT=skipcpio
	313	fi
	314
986b12d3	315	if (( ${#filenames[@]} > 1 )); then
cbf32008	316	TMPFILE="$TMPDIR/initrd.cpio"
986b12d3	317	$CAT "$image" 2>/dev/null > $TMPFILE
986b12d3 KS	318	pre_decompress()
	319	{
	320	cat $TMPFILE
	321	}
	322	CAT=pre_decompress
	323	fi
	324
884e1cda HH	325	ret=0
884e1cda HH	326
97bbba69 HH	327	if [[ -n "$unpack" ]]; then
	328	unpack_files
	329	elif (( ${#filenames[@]} > 0 )); then
b208aad5	330	extract_files
3ea5d2e2	331	else
d3be9275 AŻ	332	version=$($CAT "$image" \| cpio --extract --verbose --quiet --to-stdout -- \
d3be9275 AŻ	333	$(dracutlibdirs 'dracut-*') 2>/dev/null)
4460416a	334	((ret+=$?))
ae01bd18	335	echo "Version: $version"
b208aad5	336	echo
05d2a145 HB	337	if [ "$modules" -eq 1 ]; then
	338	list_modules
	339	echo "========================================================================"
	340	else
	341	echo -n "Arguments: "
d3be9275 AŻ	342	$CAT "$image" \| cpio --extract --verbose --quiet --to-stdout -- \
d3be9275 AŻ	343	$(dracutlibdirs build-parameter.txt) 2>/dev/null
05d2a145 HB	344	echo
	345	list_modules
	346	list_files
1ff306a3	347	list_squash_content
05d2a145	348	fi
3ea5d2e2	349	fi
4460416a	350
884e1cda	351	exit $ret