# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
-usage()
-{
+usage() {
{
echo "Usage: ${0##*/} [options] [<initramfs file> [<filename> [<filename> [...] ]]]"
echo "Usage: ${0##*/} [options] -k <kernel version>"
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
}
-
[[ $dracutbasedir ]] || dracutbasedir=/usr/lib/dracut
sorted=0
--long verbose \
-- "$@")
-if (( $? != 0 )); then
+# shellcheck disable=SC2181
+if (($? != 0)); then
usage
exit 1
fi
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;;
+ -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
if [[ $1 ]]; then
image="$1"
- if ! [[ -f "$image" ]]; then
+ if ! [[ -f $image ]]; then
{
echo "$image does not exist"
echo
exit 1
fi
else
- [[ -f /etc/machine-id ]] && read MACHINE_ID < /etc/machine-id
+ if [[ -d /efi/Default ]] || [[ -d /boot/Default ]] || [[ -d /boot/efi/Default ]]; then
+ MACHINE_ID="Default"
+ elif [[ -s /etc/machine-id ]]; then
+ read -r MACHINE_ID < /etc/machine-id
+ [[ $MACHINE_ID == "uninitialized" ]] && MACHINE_ID="Default"
+ else
+ MACHINE_ID="Default"
+ fi
- if [[ -d /boot/loader/entries || -L /boot/loader/entries ]] \
+ 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/${MACHINE_ID} ]] ; then
+ && [[ -d /boot/${MACHINE_ID} || -L /boot/${MACHINE_ID} ]]; then
image="/boot/${MACHINE_ID}/${KERNEL_VERSION}/initrd"
- else
+ 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[${1#/}]=1;
+ filenames[${1#/}]=1
shift
done
-if ! [[ -f "$image" ]]; then
+if ! [[ -f $image ]]; then
{
echo "No <initramfs file> specified and the default image '$image' cannot be accessed!"
echo
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()
-{
- (( ${#filenames[@]} == 1 )) && nofileinfo=1
+extract_files() {
+ ((${#filenames[@]} == 1)) && nofileinfo=1
for f in "${!filenames[@]}"; do
[[ $nofileinfo ]] || echo "initramfs:/$f"
[[ $nofileinfo ]] || echo "========================================================================"
- $CAT $image | cpio --extract --verbose --quiet --to-stdout $f 2>/dev/null
- ((ret+=$?))
+ # 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()
-{
+list_modules() {
echo "dracut modules:"
+ # shellcheck disable=SC2046
$CAT "$image" | cpio --extract --verbose --quiet --to-stdout -- \
- $(dracutlibdirs modules.txt) 2>/dev/null
- ((ret+=$?))
+ $(dracutlibdirs modules.txt) 2> /dev/null
+ ((ret += $?))
}
-list_files()
-{
+list_files() {
echo "========================================================================"
if [ "$sorted" -eq 1 ]; then
- $CAT "$image" | cpio --extract --verbose --quiet --list | sort -n -k5
+ $CAT "$image" 2> /dev/null | cpio --extract --verbose --quiet --list | sort -n -k5
else
- $CAT "$image" | cpio --extract --verbose --quiet --list | sort -k9
+ $CAT "$image" 2> /dev/null | cpio --extract --verbose --quiet --list | sort -k9
fi
- ((ret+=$?))
+ ((ret += $?))
echo "========================================================================"
}
-unpack_files()
-{
- $CAT "$image" | cpio -id --quiet $verbose
- ((ret+=$?))
+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
-if (( ${#filenames[@]} <= 0 )) && [[ -z "$unpack" ]] && [[ -z "$unpackearly" ]]; then
- echo "Image: $image: $(du -h $image | while read a b || [ -n "$a" ]; do echo $a;done)"
echo "========================================================================"
fi
-read -N 6 bin < "$image"
+read -r -N 6 bin < "$image"
case $bin in
- $'\x71\xc7'*|070701)
+ $'\x71\xc7'* | 070701)
CAT="cat --"
- is_early=$(cpio --extract --verbose --quiet --to-stdout -- 'early_cpio' < "$image" 2>/dev/null)
+ is_early=$(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 [[ "$is_early" ]]; then
- if [[ -n "$unpackearly" ]]; then
+ if [[ -n $unpack ]]; then
+ # should use --unpackearly for early CPIO
+ :
+ elif [[ -n $unpackearly ]]; then
unpack_files
- elif (( ${#filenames[@]} > 0 )); then
+ elif ((${#filenames[@]} > 0)); then
extract_files
else
echo "Early CPIO image"
list_files
fi
- if [[ -d "$dracutbasedir/skipcpio" ]]; then
- SKIP="$dracutbasedir/skipcpio/skipcpio"
+ if [[ -d "$dracutbasedir/src/skipcpio" ]]; then
+ SKIP="$dracutbasedir/src/skipcpio/skipcpio"
else
SKIP="$dracutbasedir/skipcpio"
fi
;;
esac
-if [[ $SKIP ]] ; then
- bin="$($SKIP "$image" | { read -N 6 bin && echo "$bin" ; })"
+if [[ $SKIP ]]; then
+ bin="$($SKIP "$image" | { read -r -N 6 bin && echo "$bin"; })"
else
- read -N 6 bin < "$image"
+ read -r -N 6 bin < "$image"
fi
case $bin in
$'\x1f\x8b'*)
BZh*)
CAT="bzcat --"
;;
- $'\x71\xc7'*|070701)
+ $'\x71\xc7'* | 070701)
CAT="cat --"
;;
$'\x02\x21'*)
$'\x89'LZO$'\0'*)
CAT="lzop -d -c"
;;
- $'0xFD2FB528'*)
+ $'\x28\xB5\x2F\xFD'*)
CAT="zstd -d -c"
;;
*)
- if echo "test"|xz|xzcat --single-stream >/dev/null 2>&1; then
+ if echo "test" | xz | xzcat --single-stream > /dev/null 2>&1; then
CAT="xzcat --single-stream --"
else
CAT="xzcat --"
;;
esac
-skipcpio()
-{
+type "${CAT%% *}" > /dev/null 2>&1 || {
+ echo "Need '${CAT%% *}' to unpack the initramfs."
+ exit 1
+}
+
+skipcpio() {
$SKIP "$@" | $ORIG_CAT
}
CAT=skipcpio
fi
+if ((${#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
+if [[ -n $unpack ]]; then
unpack_files
-elif (( ${#filenames[@]} > 0 )); then
+elif ((${#filenames[@]} > 0)); then
extract_files
else
+ # shellcheck disable=SC2046
version=$($CAT "$image" | cpio --extract --verbose --quiet --to-stdout -- \
- $(dracutlibdirs 'dracut-*') 2>/dev/null)
- ((ret+=$?))
+ $(dracutlibdirs 'dracut-*') 2> /dev/null)
+ ((ret += $?))
echo "Version: $version"
echo
if [ "$modules" -eq 1 ]; then
echo "========================================================================"
else
echo -n "Arguments: "
+ # shellcheck disable=SC2046
$CAT "$image" | cpio --extract --verbose --quiet --to-stdout -- \
- $(dracutlibdirs build-parameter.txt) 2>/dev/null
+ $(dracutlibdirs build-parameter.txt) 2> /dev/null
echo
list_modules
list_files
+ list_squash_content
fi
fi
-exit $ret
+exit "$ret"
projects / thirdparty / dracut.git / blobdiff