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

# shellcheck disable=SC2181
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
    if [[ -d /efi/Default ]] || [[ -d /boot/Default ]] || [[ -d /boot/efi/Default ]]; then
        MACHINE_ID="Default"
    elif [[ -f /etc/machine-id ]]; then
        read -r MACHINE_ID < /etc/machine-id
    else
        MACHINE_ID="Default"
    fi

    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"
    elif [[ -d /boot/efi/loader/entries || -L /boot/efi/loader/entries ]] \
        && [[ $MACHINE_ID ]] \
        && [[ -d /boot/efi/${MACHINE_ID} || -L /boot/efi/${MACHINE_ID} ]]; then
        image="/boot/efi/${MACHINE_ID}/${KERNEL_VERSION}/initrd"
    elif [[ -f /lib/modules/${KERNEL_VERSION}/initrd ]]; then
        image="/lib/modules/${KERNEL_VERSION}/initrd"
    elif [[ -f /lib/modules/${KERNEL_VERSION}/initramfs.img ]]; then
        image="/lib/modules/${KERNEL_VERSION}/initramfs.img"
    elif [[ -f /boot/initramfs-${KERNEL_VERSION}.img ]]; then
        image="/boot/initramfs-${KERNEL_VERSION}.img"
    elif [[ $MACHINE_ID ]] \
        && mountpoint -q /efi; then
        image="/efi/${MACHINE_ID}/${KERNEL_VERSION}/initrd"
    elif [[ $MACHINE_ID ]] \
        && mountpoint -q /boot/efi; then
        image="/boot/efi/${MACHINE_ID}/${KERNEL_VERSION}/initrd"
    else
        image=""
    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="$(mktemp -d -t lsinitrd.XXXXXX)"
# shellcheck disable=SC2064
trap "rm -rf '$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 "========================================================================"
        # shellcheck disable=SC2001
        [[ $f == *"\\x"* ]] && f=$(echo "$f" | sed 's/\\x.\{2\}/????/g')
        $CAT "$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:"
    # shellcheck disable=SC2046
    $CAT "$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
            # shellcheck disable=SC2001
            [[ $f == *"\\x"* ]] && f=$(echo "$f" | sed 's/\\x.\{2\}/????/g')
            $CAT "$image" 2> /dev/null | cpio -id --quiet $verbose "$f"
            ((ret += $?))
        done
    else
        $CAT "$image" 2> /dev/null | cpio -id --quiet $verbose
        ((ret += $?))
    fi
}

read -r -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 -r a _ || [ -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 -r a _ || [ -n "$a" ]; do echo "$a"; done
    fi

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

read -r -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 "$dracutbasedir/src/skipcpio" ]]; then
                SKIP="$dracutbasedir/src/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 -r -N 6 bin && echo "$bin"; })"
else
    read -r -N 6 bin < "$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
    # shellcheck disable=SC2046
    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: "
        # shellcheck disable=SC2046
        $CAT "$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
9a52c3fd	20	usage() {
dde2db3d	21	{
7d9bb76a HH	22	echo "Usage: ${0##*/} [options] [<initramfs file> [<filename> [<filename> [...] ]]]"
7d9bb76a HH	23	echo "Usage: ${0##*/} [options] -k <kernel version>"
dde2db3d	24	echo
7d9bb76a HH	25	echo "-h, --help print a help message and exit."
7d9bb76a HH	26	echo "-s, --size sort the contents of the initramfs by size."
05d2a145	27	echo "-m, --mod list modules."
7d9bb76a	28	echo "-f, --file <filename> print the contents of <filename>."
97bbba69	29	echo "--unpack unpack the initramfs, instead of displaying the contents."
143420bc KS	30	echo " If optional filenames are given, will only unpack specified files,"
143420bc KS	31	echo " else the whole image will be unpacked. Won't unpack anything from early cpio part."
97bbba69	32	echo "--unpackearly unpack the early microcode part of the initramfs."
143420bc	33	echo " Same as --unpack, but only unpack files from early cpio part."
97bbba69	34	echo "-v, --verbose unpack verbosely."
7d9bb76a	35	echo "-k, --kver <kernel version> inspect the initramfs of <kernel version>."
dde2db3d HH	36	echo
dde2db3d HH	37	} >&2
f7bccf37 HH	38	}
f7bccf37 HH	39
b208aad5 HH	40	[[ $dracutbasedir ]] \|\| dracutbasedir=/usr/lib/dracut
b208aad5 HH	41
3ea5d2e2	42	sorted=0
05d2a145	43	modules=0
97bbba69	44	unset verbose
7d9bb76a HH	45	declare -A filenames
	46
	47	unset POSIXLY_CORRECT
	48	TEMP=$(getopt \
97bbba69	49	-o "vshmf:k:" \
7d9bb76a HH	50	--long kver: \
7d9bb76a HH	51	--long file: \
05d2a145	52	--long mod \
7d9bb76a HH	53	--long help \
7d9bb76a HH	54	--long size \
97bbba69 HH	55	--long unpack \
	56	--long unpackearly \
	57	--long verbose \
7d9bb76a HH	58	-- "$@")
7d9bb76a HH	59
0ce54e80	60	# shellcheck disable=SC2181
9a52c3fd	61	if (($? != 0)); then
7d9bb76a HH	62	usage
	63	exit 1
	64	fi
	65
	66	eval set -- "$TEMP"
	67
	68	while (($# > 0)); do
	69	case $1 in
9a52c3fd HH	70	-k \| --kver)
	71	KERNEL_VERSION="$2"
	72	shift
	73	;;
	74	-f \| --file)
	75	filenames[${2#/}]=1
	76	shift
	77	;;
	78	-s \| --size) sorted=1 ;;
	79	-h \| --help)
	80	usage
	81	exit 0
	82	;;
	83	-m \| --mod) modules=1 ;;
	84	-v \| --verbose) verbose="--verbose" ;;
	85	--unpack) unpack=1 ;;
	86	--unpackearly) unpackearly=1 ;;
	87	--)
	88	shift
	89	break
	90	;;
	91	*)
	92	usage
	93	exit 1
	94	;;
3ea5d2e2	95	esac
7d9bb76a	96	shift
3ea5d2e2	97	done
3ea5d2e2	98
7d9bb76a	99	[[ $KERNEL_VERSION ]] \|\| KERNEL_VERSION="$(uname -r)"
dde2db3d	100
7d9bb76a	101	if [[ $1 ]]; then
dde2db3d	102	image="$1"
75d758e8	103	if ! [[ -f $image ]]; then
dde2db3d HH	104	{
	105	echo "$image does not exist"
	106	echo
	107	} >&2
	108	usage
	109	exit 1
	110	fi
dde2db3d	111	else
49ea6c42 AAF	112	if [[ -d /efi/Default ]] \|\| [[ -d /boot/Default ]] \|\| [[ -d /boot/efi/Default ]]; then
	113	MACHINE_ID="Default"
	114	elif [[ -f /etc/machine-id ]]; then
	115	read -r MACHINE_ID < /etc/machine-id
	116	else
	117	MACHINE_ID="Default"
	118	fi
727e68d0	119
093bc9b5 JG	120	if [[ -d /efi/loader/entries \|\| -L /efi/loader/entries ]] \
093bc9b5 JG	121	&& [[ $MACHINE_ID ]] \
9a52c3fd	122	&& [[ -d /efi/${MACHINE_ID} \|\| -L /efi/${MACHINE_ID} ]]; then
093bc9b5 JG	123	image="/efi/${MACHINE_ID}/${KERNEL_VERSION}/initrd"
093bc9b5 JG	124	elif [[ -d /boot/loader/entries \|\| -L /boot/loader/entries ]] \
7d9bb76a	125	&& [[ $MACHINE_ID ]] \
9a52c3fd	126	&& [[ -d /boot/${MACHINE_ID} \|\| -L /boot/${MACHINE_ID} ]]; then
727e68d0	127	image="/boot/${MACHINE_ID}/${KERNEL_VERSION}/initrd"
49ea6c42 AAF	128	elif [[ -d /boot/efi/loader/entries \|\| -L /boot/efi/loader/entries ]] \
	129	&& [[ $MACHINE_ID ]] \
	130	&& [[ -d /boot/efi/${MACHINE_ID} \|\| -L /boot/efi/${MACHINE_ID} ]]; then
	131	image="/boot/efi/${MACHINE_ID}/${KERNEL_VERSION}/initrd"
	132	elif [[ -f /lib/modules/${KERNEL_VERSION}/initrd ]]; then
	133	image="/lib/modules/${KERNEL_VERSION}/initrd"
e877be69 K	134	elif [[ -f /lib/modules/${KERNEL_VERSION}/initramfs.img ]]; then
e877be69 K	135	image="/lib/modules/${KERNEL_VERSION}/initramfs.img"
49ea6c42	136	elif [[ -f /boot/initramfs-${KERNEL_VERSION}.img ]]; then
d928724c	137	image="/boot/initramfs-${KERNEL_VERSION}.img"
d6343146 AAF	138	elif [[ $MACHINE_ID ]] \
d6343146 AAF	139	&& mountpoint -q /efi; then
49ea6c42	140	image="/efi/${MACHINE_ID}/${KERNEL_VERSION}/initrd"
d6343146 AAF	141	elif [[ $MACHINE_ID ]] \
d6343146 AAF	142	&& mountpoint -q /boot/efi; then
49ea6c42 AAF	143	image="/boot/efi/${MACHINE_ID}/${KERNEL_VERSION}/initrd"
	144	else
	145	image=""
727e68d0	146	fi
dde2db3d HH	147	fi
dde2db3d HH	148
7d9bb76a HH	149	shift
7d9bb76a HH	150	while (($# > 0)); do
9a52c3fd	151	filenames[${1#/}]=1
7d9bb76a HH	152	shift
7d9bb76a HH	153	done
727e68d0	154
75d758e8	155	if ! [[ -f $image ]]; then
dde2db3d HH	156	{
	157	echo "No <initramfs file> specified and the default image '$image' cannot be accessed!"
	158	echo
	159	} >&2
	160	usage
	161	exit 1
	162	fi
074d12c1	163
cbf32008	164	TMPDIR="$(mktemp -d -t lsinitrd.XXXXXX)"
0ce54e80	165	# shellcheck disable=SC2064
cbf32008 MR	166	trap "rm -rf '$TMPDIR'" EXIT
cbf32008 MR	167
d3be9275 AŻ	168	dracutlibdirs() {
	169	for d in lib64/dracut lib/dracut usr/lib64/dracut usr/lib/dracut; do
	170	echo "$d/$1"
	171	done
	172	}
	173
9a52c3fd HH	174	extract_files() {
9a52c3fd HH	175	((${#filenames[@]} == 1)) && nofileinfo=1
3721635b	176	for f in "${!filenames[@]}"; do
b208aad5 HH	177	[[ $nofileinfo ]] \|\| echo "initramfs:/$f"
b208aad5 HH	178	[[ $nofileinfo ]] \|\| echo "========================================================================"
1f84ff88 AAF	179	# shellcheck disable=SC2001
1f84ff88 AAF	180	[[ $f == "\\x" ]] && f=$(echo "$f" \| sed 's/\\x.\{2\}/????/g')
9a52c3fd HH	181	$CAT "$image" 2> /dev/null \| cpio --extract --verbose --quiet --to-stdout "$f" 2> /dev/null
9a52c3fd HH	182	((ret += $?))
b208aad5 HH	183	[[ $nofileinfo ]] \|\| echo "========================================================================"
	184	[[ $nofileinfo ]] \|\| echo
	185	done
	186	}
	187
9a52c3fd	188	list_modules() {
05d2a145	189	echo "dracut modules:"
0ce54e80	190	# shellcheck disable=SC2046
d3be9275	191	$CAT "$image" \| cpio --extract --verbose --quiet --to-stdout -- \
9a52c3fd HH	192	$(dracutlibdirs modules.txt) 2> /dev/null
9a52c3fd HH	193	((ret += $?))
05d2a145 HB	194	}
05d2a145 HB	195
9a52c3fd	196	list_files() {
b208aad5 HH	197	echo "========================================================================"
b208aad5 HH	198	if [ "$sorted" -eq 1 ]; then
9a52c3fd	199	$CAT "$image" 2> /dev/null \| cpio --extract --verbose --quiet --list \| sort -n -k5
b208aad5	200	else
9a52c3fd	201	$CAT "$image" 2> /dev/null \| cpio --extract --verbose --quiet --list \| sort -k9
b208aad5	202	fi
9a52c3fd	203	((ret += $?))
b208aad5 HH	204	echo "========================================================================"
	205	}
	206
9a52c3fd	207	list_squash_content() {
8f7c332e	208	SQUASH_IMG="squash-root.img"
cbf32008 MR	209	SQUASH_TMPFILE="$TMPDIR/initrd.root.sqsh"
cbf32008 MR	210
9a52c3fd HH	211	$CAT "$image" 2> /dev/null \| cpio --extract --verbose --quiet --to-stdout -- \
9a52c3fd HH	212	$SQUASH_IMG > "$SQUASH_TMPFILE" 2> /dev/null
1ff306a3 KS	213	if [[ -s $SQUASH_TMPFILE ]]; then
	214	echo "Squashed content ($SQUASH_IMG):"
	215	echo "========================================================================"
	216	unsquashfs -ll "$SQUASH_TMPFILE" \| tail -n +4
	217	echo "========================================================================"
	218	fi
	219	}
	220
9a52c3fd HH	221	unpack_files() {
9a52c3fd HH	222	if ((${#filenames[@]} > 0)); then
f81c864e	223	for f in "${!filenames[@]}"; do
1f84ff88 AAF	224	# shellcheck disable=SC2001
	225	[[ $f == "\\x" ]] && f=$(echo "$f" \| sed 's/\\x.\{2\}/????/g')
	226	$CAT "$image" 2> /dev/null \| cpio -id --quiet $verbose "$f"
9a52c3fd	227	((ret += $?))
f81c864e KS	228	done
f81c864e KS	229	else
9a52c3fd HH	230	$CAT "$image" 2> /dev/null \| cpio -id --quiet $verbose
9a52c3fd HH	231	((ret += $?))
f81c864e	232	fi
97bbba69 HH	233	}
97bbba69 HH	234
0ce54e80	235	read -r -N 2 bin < "$image"
cbf32008	236	if [ "$bin" = "MZ" ]; then
9a52c3fd HH	237	command -v objcopy > /dev/null \|\| {
	238	echo "Need 'objcopy' to unpack an UEFI executable."
	239	exit 1
	240	}
cbf32008 MR	241	objcopy \
	242	--dump-section .linux="$TMPDIR/vmlinuz" \
	243	--dump-section .initrd="$TMPDIR/initrd.img" \
	244	--dump-section .cmdline="$TMPDIR/cmdline.txt" \
	245	--dump-section .osrel="$TMPDIR/osrel.txt" \
	246	"$image" /dev/null
	247	uefi="$image"
	248	image="$TMPDIR/initrd.img"
	249	[ -f "$image" ] \|\| exit 1
	250	fi
b208aad5	251
75d758e8	252	if ((${#filenames[@]} <= 0)) && [[ -z $unpack ]] && [[ -z $unpackearly ]]; then
32dfd416	253	if [ -n "$uefi" ]; then
cbf32008	254	echo -n "initrd in UEFI: $uefi: "
0ce54e80	255	du -h "$image" \| while read -r a _ \|\| [ -n "$a" ]; do echo "$a"; done
cbf32008 MR	256	if [ -f "$TMPDIR/osrel.txt" ]; then
	257	name=$(sed -En '/^PRETTY_NAME/ s/^\w+=["'"'"']?([^"'"'"'$]*)["'"'"']?/\1/p' "$TMPDIR/osrel.txt")
	258	id=$(sed -En '/^ID/ s/^\w+=["'"'"']?([^"'"'"'$]*)["'"'"']?/\1/p' "$TMPDIR/osrel.txt")
	259	build=$(sed -En '/^BUILD_ID/ s/^\w+=["'"'"']?([^"'"'"'$]*)["'"'"']?/\1/p' "$TMPDIR/osrel.txt")
	260	echo "OS Release: $name (${id}-${build})"
	261	fi
	262	if [ -f "$TMPDIR/vmlinuz" ]; then
	263	version=$(strings -n 20 "$TMPDIR/vmlinuz" \| sed -En '/[0-9]+\.[0-9]+\.[0-9]+/ { p; q 0 }')
	264	echo "Kernel Version: $version"
	265	fi
	266	if [ -f "$TMPDIR/cmdline.txt" ]; then
	267	echo "Command line:"
	268	sed -En 's/\s+/\n/g; s/\x00/\n/; p' "$TMPDIR/cmdline.txt"
	269	fi
	270	else
	271	echo -n "Image: $image: "
0ce54e80	272	du -h "$image" \| while read -r a _ \|\| [ -n "$a" ]; do echo "$a"; done
cbf32008 MR	273	fi
cbf32008 MR	274
b208aad5 HH	275	echo "========================================================================"
	276	fi
	277
0ce54e80	278	read -r -N 6 bin < "$image"
b208aad5	279	case $bin in
9a52c3fd	280	$'\x71\xc7'* \| 070701)
18a5011f	281	CAT="cat --"
9a52c3fd	282	is_early=$(cpio --extract --verbose --quiet --to-stdout -- 'early_cpio' < "$image" 2> /dev/null)
ce62465c	283	# Debian mkinitramfs does not create the file 'early_cpio', so let's check if firmware files exist
9a52c3fd	284	[[ "$is_early" ]] \|\| is_early=$(cpio --list --verbose --quiet --to-stdout -- 'kernel//microcode/.bin' < "$image" 2> /dev/null)
b208aad5	285	if [[ "$is_early" ]]; then
75d758e8	286	if [[ -n $unpack ]]; then
f81c864e KS	287	# should use --unpackearly for early CPIO
f81c864e KS	288	:
75d758e8	289	elif [[ -n $unpackearly ]]; then
97bbba69	290	unpack_files
9a52c3fd	291	elif ((${#filenames[@]} > 0)); then
b208aad5 HH	292	extract_files
	293	else
	294	echo "Early CPIO image"
	295	list_files
	296	fi
5eb996a9 AAF	297	if [[ -d "$dracutbasedir/src/skipcpio" ]]; then
5eb996a9 AAF	298	SKIP="$dracutbasedir/src/skipcpio/skipcpio"
98fd0693 HH	299	else
	300	SKIP="$dracutbasedir/skipcpio"
	301	fi
b208aad5 HH	302	if ! [[ -x $SKIP ]]; then
	303	echo
	304	echo "'$SKIP' not found, cannot display remaining contents!" >&2
	305	echo
	306	exit 0
	307	fi
	308	fi
	309	;;
	310	esac
	311
9a52c3fd	312	if [[ $SKIP ]]; then
0ce54e80	313	bin="$($SKIP "$image" \| { read -r -N 6 bin && echo "$bin"; })"
3ce14286	314	else
0ce54e80	315	read -r -N 6 bin < "$image"
3ce14286 HD	316	fi
	317	case $bin in
	318	$'\x1f\x8b'*)
	319	CAT="zcat --"
	320	;;
	321	BZh*)
	322	CAT="bzcat --"
	323	;;
9a52c3fd	324	$'\x71\xc7'* \| 070701)
18a5011f	325	CAT="cat --"
3ce14286 HD	326	;;
	327	$'\x02\x21'*)
	328	CAT="lz4 -d -c"
	329	;;
	330	$'\x89'LZO$'\0'*)
	331	CAT="lzop -d -c"
	332	;;
ebfd53e1	333	$'\x28\xB5\x2F\xFD'*)
7dbadcc7 TPG	334	CAT="zstd -d -c"
7dbadcc7 TPG	335	;;
3ce14286	336	*)
9a52c3fd	337	if echo "test" \| xz \| xzcat --single-stream > /dev/null 2>&1; then
3ce14286	338	CAT="xzcat --single-stream --"
fd9f9024	339	else
3ce14286 HD	340	CAT="xzcat --"
	341	fi
	342	;;
	343	esac
66fe35eb	344
9a52c3fd	345	skipcpio() {
b208aad5 HH	346	$SKIP "$@" \| $ORIG_CAT
	347	}
	348
	349	if [[ $SKIP ]]; then
	350	ORIG_CAT="$CAT"
	351	CAT=skipcpio
	352	fi
	353
9a52c3fd	354	if ((${#filenames[@]} > 1)); then
cbf32008	355	TMPFILE="$TMPDIR/initrd.cpio"
0ce54e80	356	$CAT "$image" 2> /dev/null > "$TMPFILE"
9a52c3fd	357	pre_decompress() {
0ce54e80	358	cat "$TMPFILE"
986b12d3 KS	359	}
	360	CAT=pre_decompress
	361	fi
	362
884e1cda HH	363	ret=0
884e1cda HH	364
75d758e8	365	if [[ -n $unpack ]]; then
97bbba69	366	unpack_files
9a52c3fd	367	elif ((${#filenames[@]} > 0)); then
b208aad5	368	extract_files
3ea5d2e2	369	else
0ce54e80	370	# shellcheck disable=SC2046
d3be9275	371	version=$($CAT "$image" \| cpio --extract --verbose --quiet --to-stdout -- \
9a52c3fd HH	372	$(dracutlibdirs 'dracut-*') 2> /dev/null)
9a52c3fd HH	373	((ret += $?))
ae01bd18	374	echo "Version: $version"
b208aad5	375	echo
05d2a145 HB	376	if [ "$modules" -eq 1 ]; then
	377	list_modules
	378	echo "========================================================================"
	379	else
	380	echo -n "Arguments: "
0ce54e80	381	# shellcheck disable=SC2046
d3be9275	382	$CAT "$image" \| cpio --extract --verbose --quiet --to-stdout -- \
9a52c3fd	383	$(dracutlibdirs build-parameter.txt) 2> /dev/null
05d2a145 HB	384	echo
	385	list_modules
	386	list_files
1ff306a3	387	list_squash_content
05d2a145	388	fi
3ea5d2e2	389	fi
4460416a	390
0ce54e80	391	exit "$ret"