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 "--unpackearly unpack the early microcode part of the initramfs."
+ echo "-v, --verbose unpack verbosely."
echo "-k, --kver <kernel version> inspect the initramfs of <kernel version>."
echo
} >&2
sorted=0
modules=0
+unset verbose
declare -A filenames
unset POSIXLY_CORRECT
TEMP=$(getopt \
- -o "shmf:k:" \
+ -o "vshmf:k:" \
--long kver: \
--long file: \
--long mod \
--long help \
--long size \
+ --long unpack \
+ --long unpackearly \
+ --long verbose \
-- "$@")
if (( $? != 0 )); then
while (($# > 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;;
- --) 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
extract_files()
{
(( ${#filenames[@]} == 1 )) && nofileinfo=1
- for f in ${!filenames[@]}; do
+ for f in "${!filenames[@]}"; do
[[ $nofileinfo ]] || echo "initramfs:/$f"
[[ $nofileinfo ]] || echo "========================================================================"
$CAT $image | cpio --extract --verbose --quiet --to-stdout $f 2>/dev/null
echo "========================================================================"
}
+unpack_files()
+{
+ $CAT "$image" | cpio -id --quiet $verbose
+ ((ret+=$?))
+}
-if (( ${#filenames[@]} <= 0 )); then
+
+if (( ${#filenames[@]} <= 0 )) && [[ -z "$unpack" ]] && [[ -z "$unpackearly" ]]; then
echo "Image: $image: $(du -h $image | while read a b || [ -n "$a" ]; do echo $a;done)"
echo "========================================================================"
fi
CAT="cat --"
is_early=$(cpio --extract --verbose --quiet --to-stdout -- 'early_cpio' < "$image" 2>/dev/null)
if [[ "$is_early" ]]; then
- if (( ${#filenames[@]} > 0 )); then
+ if [[ -n "$unpackearly" ]]; then
+ unpack_files
+ elif (( ${#filenames[@]} > 0 )); then
extract_files
else
echo "Early CPIO image"
list_files
fi
- SKIP="$dracutbasedir/skipcpio"
+ 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
;;
esac
-CAT=$({
- if [[ $SKIP ]]; then
- $SKIP "$image"
+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"
+ ;;
+ $'0xFD2FB528'*)
+ CAT="zstd -d -c"
+ ;;
+ *)
+ if echo "test"|xz|xzcat --single-stream >/dev/null 2>&1; then
+ CAT="xzcat --single-stream --"
else
- cat "$image"
- fi } | {
- read -N 6 bin
- case $bin in
- $'\x1f\x8b'*)
- echo "zcat --"
- ;;
- BZh*)
- echo "bzcat --"
- ;;
- $'\x71\xc7'*|070701)
- echo "cat --"
- ;;
- $'\x02\x21'*)
- echo "lz4 -d -c"
- ;;
- $'\x89'LZO$'\0'*)
- echo "lzop -d -c"
- ;;
- *)
- if echo "test"|xz|xzcat --single-stream >/dev/null 2>&1; then
- echo "xzcat --single-stream --"
- else
- echo "xzcat --"
- fi
- ;;
- esac
- })
+ CAT="xzcat --"
+ fi
+ ;;
+esac
skipcpio()
{
ret=0
-if (( ${#filenames[@]} > 0 )); then
+if [[ -n "$unpack" ]]; then
+ unpack_files
+elif (( ${#filenames[@]} > 0 )); then
extract_files
else
version=$($CAT "$image" | cpio --extract --verbose --quiet --to-stdout -- \