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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() |
21 | { | |
dde2db3d | 22 | { |
7d9bb76a HH |
23 | echo "Usage: ${0##*/} [options] [<initramfs file> [<filename> [<filename> [...] ]]]" |
24 | echo "Usage: ${0##*/} [options] -k <kernel version>" | |
dde2db3d | 25 | echo |
7d9bb76a HH |
26 | echo "-h, --help print a help message and exit." |
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," |
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 |
38 | } >&2 | |
f7bccf37 HH |
39 | } |
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: \ |
53 | --long file: \ | |
05d2a145 | 54 | --long mod \ |
7d9bb76a HH |
55 | --long help \ |
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 |
99 | ||
7d9bb76a HH |
100 | if [[ -d /boot/loader/entries || -L /boot/loader/entries ]] \ |
101 | && [[ $MACHINE_ID ]] \ | |
102 | && [[ -d /boot/${MACHINE_ID} || -L /boot/${MACHINE_ID} ]] ; then | |
727e68d0 HH |
103 | image="/boot/${MACHINE_ID}/${KERNEL_VERSION}/initrd" |
104 | else | |
d928724c | 105 | image="/boot/initramfs-${KERNEL_VERSION}.img" |
727e68d0 | 106 | fi |
dde2db3d HH |
107 | fi |
108 | ||
7d9bb76a HH |
109 | shift |
110 | while (($# > 0)); do | |
111 | filenames[${1#/}]=1; | |
112 | shift | |
113 | done | |
727e68d0 | 114 | |
dde2db3d HH |
115 | if ! [[ -f "$image" ]]; then |
116 | { | |
117 | echo "No <initramfs file> specified and the default image '$image' cannot be accessed!" | |
118 | echo | |
119 | } >&2 | |
120 | usage | |
121 | exit 1 | |
122 | fi | |
074d12c1 | 123 | |
cbf32008 MR |
124 | TMPDIR="$(mktemp -d -t lsinitrd.XXXXXX)" |
125 | trap "rm -rf '$TMPDIR'" EXIT | |
126 | ||
d3be9275 AŻ |
127 | dracutlibdirs() { |
128 | for d in lib64/dracut lib/dracut usr/lib64/dracut usr/lib/dracut; do | |
129 | echo "$d/$1" | |
130 | done | |
131 | } | |
132 | ||
b208aad5 HH |
133 | extract_files() |
134 | { | |
135 | (( ${#filenames[@]} == 1 )) && nofileinfo=1 | |
3721635b | 136 | for f in "${!filenames[@]}"; do |
b208aad5 HH |
137 | [[ $nofileinfo ]] || echo "initramfs:/$f" |
138 | [[ $nofileinfo ]] || echo "========================================================================" | |
8379784a | 139 | $CAT "$image" 2>/dev/null | cpio --extract --verbose --quiet --to-stdout "$f" 2>/dev/null |
b208aad5 HH |
140 | ((ret+=$?)) |
141 | [[ $nofileinfo ]] || echo "========================================================================" | |
142 | [[ $nofileinfo ]] || echo | |
143 | done | |
144 | } | |
145 | ||
05d2a145 HB |
146 | list_modules() |
147 | { | |
148 | echo "dracut modules:" | |
d3be9275 AŻ |
149 | $CAT "$image" | cpio --extract --verbose --quiet --to-stdout -- \ |
150 | $(dracutlibdirs modules.txt) 2>/dev/null | |
05d2a145 HB |
151 | ((ret+=$?)) |
152 | } | |
153 | ||
b208aad5 HH |
154 | list_files() |
155 | { | |
156 | echo "========================================================================" | |
157 | if [ "$sorted" -eq 1 ]; then | |
bce6823a | 158 | $CAT "$image" 2>/dev/null | cpio --extract --verbose --quiet --list | sort -n -k5 |
b208aad5 | 159 | else |
bce6823a | 160 | $CAT "$image" 2>/dev/null | cpio --extract --verbose --quiet --list | sort -k9 |
b208aad5 HH |
161 | fi |
162 | ((ret+=$?)) | |
163 | echo "========================================================================" | |
164 | } | |
165 | ||
1ff306a3 KS |
166 | list_squash_content() |
167 | { | |
168 | SQUASH_IMG="squash/root.img" | |
cbf32008 MR |
169 | SQUASH_TMPFILE="$TMPDIR/initrd.root.sqsh" |
170 | ||
1ff306a3 KS |
171 | $CAT "$image" 2>/dev/null | cpio --extract --verbose --quiet --to-stdout -- \ |
172 | $SQUASH_IMG > "$SQUASH_TMPFILE" 2>/dev/null | |
173 | if [[ -s $SQUASH_TMPFILE ]]; then | |
174 | echo "Squashed content ($SQUASH_IMG):" | |
175 | echo "========================================================================" | |
176 | unsquashfs -ll "$SQUASH_TMPFILE" | tail -n +4 | |
177 | echo "========================================================================" | |
178 | fi | |
179 | } | |
180 | ||
97bbba69 HH |
181 | unpack_files() |
182 | { | |
f81c864e KS |
183 | if (( ${#filenames[@]} > 0 )); then |
184 | for f in "${!filenames[@]}"; do | |
185 | $CAT "$image" 2>/dev/null | cpio -id --quiet $verbose $f | |
186 | ((ret+=$?)) | |
187 | done | |
188 | else | |
189 | $CAT "$image" 2>/dev/null | cpio -id --quiet $verbose | |
190 | ((ret+=$?)) | |
191 | fi | |
97bbba69 HH |
192 | } |
193 | ||
cbf32008 MR |
194 | read -N 2 bin < "$image" |
195 | if [ "$bin" = "MZ" ]; then | |
196 | command -v objcopy > /dev/null || { echo "Need 'objcopy' to unpack an UEFI executable."; exit 1; } | |
197 | objcopy \ | |
198 | --dump-section .linux="$TMPDIR/vmlinuz" \ | |
199 | --dump-section .initrd="$TMPDIR/initrd.img" \ | |
200 | --dump-section .cmdline="$TMPDIR/cmdline.txt" \ | |
201 | --dump-section .osrel="$TMPDIR/osrel.txt" \ | |
202 | "$image" /dev/null | |
203 | uefi="$image" | |
204 | image="$TMPDIR/initrd.img" | |
205 | [ -f "$image" ] || exit 1 | |
206 | fi | |
b208aad5 | 207 | |
97bbba69 | 208 | if (( ${#filenames[@]} <= 0 )) && [[ -z "$unpack" ]] && [[ -z "$unpackearly" ]]; then |
32dfd416 | 209 | if [ -n "$uefi" ]; then |
cbf32008 MR |
210 | echo -n "initrd in UEFI: $uefi: " |
211 | du -h $image | while read a b || [ -n "$a" ]; do echo $a;done | |
212 | if [ -f "$TMPDIR/osrel.txt" ]; then | |
213 | name=$(sed -En '/^PRETTY_NAME/ s/^\w+=["'"'"']?([^"'"'"'$]*)["'"'"']?/\1/p' "$TMPDIR/osrel.txt") | |
214 | id=$(sed -En '/^ID/ s/^\w+=["'"'"']?([^"'"'"'$]*)["'"'"']?/\1/p' "$TMPDIR/osrel.txt") | |
215 | build=$(sed -En '/^BUILD_ID/ s/^\w+=["'"'"']?([^"'"'"'$]*)["'"'"']?/\1/p' "$TMPDIR/osrel.txt") | |
216 | echo "OS Release: $name (${id}-${build})" | |
217 | fi | |
218 | if [ -f "$TMPDIR/vmlinuz" ]; then | |
219 | version=$(strings -n 20 "$TMPDIR/vmlinuz" | sed -En '/[0-9]+\.[0-9]+\.[0-9]+/ { p; q 0 }') | |
220 | echo "Kernel Version: $version" | |
221 | fi | |
222 | if [ -f "$TMPDIR/cmdline.txt" ]; then | |
223 | echo "Command line:" | |
224 | sed -En 's/\s+/\n/g; s/\x00/\n/; p' "$TMPDIR/cmdline.txt" | |
225 | fi | |
226 | else | |
227 | echo -n "Image: $image: " | |
228 | du -h $image | while read a b || [ -n "$a" ]; do echo $a;done | |
229 | fi | |
230 | ||
b208aad5 HH |
231 | echo "========================================================================" |
232 | fi | |
233 | ||
884e1cda | 234 | read -N 6 bin < "$image" |
b208aad5 HH |
235 | case $bin in |
236 | $'\x71\xc7'*|070701) | |
18a5011f | 237 | CAT="cat --" |
b208aad5 | 238 | is_early=$(cpio --extract --verbose --quiet --to-stdout -- 'early_cpio' < "$image" 2>/dev/null) |
ce62465c TM |
239 | # Debian mkinitramfs does not create the file 'early_cpio', so let's check if firmware files exist |
240 | [[ "$is_early" ]] || is_early=$(cpio --list --verbose --quiet --to-stdout -- 'kernel/*/microcode/*.bin' < "$image" 2>/dev/null) | |
b208aad5 | 241 | if [[ "$is_early" ]]; then |
f81c864e KS |
242 | if [[ -n "$unpack" ]]; then |
243 | # should use --unpackearly for early CPIO | |
244 | : | |
245 | elif [[ -n "$unpackearly" ]]; then | |
97bbba69 HH |
246 | unpack_files |
247 | elif (( ${#filenames[@]} > 0 )); then | |
b208aad5 HH |
248 | extract_files |
249 | else | |
250 | echo "Early CPIO image" | |
251 | list_files | |
252 | fi | |
98fd0693 HH |
253 | if [[ -d "$dracutbasedir/skipcpio" ]]; then |
254 | SKIP="$dracutbasedir/skipcpio/skipcpio" | |
255 | else | |
256 | SKIP="$dracutbasedir/skipcpio" | |
257 | fi | |
b208aad5 HH |
258 | if ! [[ -x $SKIP ]]; then |
259 | echo | |
260 | echo "'$SKIP' not found, cannot display remaining contents!" >&2 | |
261 | echo | |
262 | exit 0 | |
263 | fi | |
264 | fi | |
265 | ;; | |
266 | esac | |
267 | ||
3ce14286 HD |
268 | if [[ $SKIP ]] ; then |
269 | bin="$($SKIP "$image" | { read -N 6 bin && echo "$bin" ; })" | |
270 | else | |
271 | read -N 6 bin < "$image" | |
272 | fi | |
273 | case $bin in | |
274 | $'\x1f\x8b'*) | |
275 | CAT="zcat --" | |
276 | ;; | |
277 | BZh*) | |
278 | CAT="bzcat --" | |
279 | ;; | |
280 | $'\x71\xc7'*|070701) | |
18a5011f | 281 | CAT="cat --" |
3ce14286 HD |
282 | ;; |
283 | $'\x02\x21'*) | |
284 | CAT="lz4 -d -c" | |
285 | ;; | |
286 | $'\x89'LZO$'\0'*) | |
287 | CAT="lzop -d -c" | |
288 | ;; | |
ebfd53e1 | 289 | $'\x28\xB5\x2F\xFD'*) |
7dbadcc7 TPG |
290 | CAT="zstd -d -c" |
291 | ;; | |
3ce14286 HD |
292 | *) |
293 | if echo "test"|xz|xzcat --single-stream >/dev/null 2>&1; then | |
294 | CAT="xzcat --single-stream --" | |
fd9f9024 | 295 | else |
3ce14286 HD |
296 | CAT="xzcat --" |
297 | fi | |
298 | ;; | |
299 | esac | |
66fe35eb | 300 | |
b208aad5 HH |
301 | skipcpio() |
302 | { | |
303 | $SKIP "$@" | $ORIG_CAT | |
304 | } | |
305 | ||
306 | if [[ $SKIP ]]; then | |
307 | ORIG_CAT="$CAT" | |
308 | CAT=skipcpio | |
309 | fi | |
310 | ||
986b12d3 | 311 | if (( ${#filenames[@]} > 1 )); then |
cbf32008 | 312 | TMPFILE="$TMPDIR/initrd.cpio" |
986b12d3 | 313 | $CAT "$image" 2>/dev/null > $TMPFILE |
986b12d3 KS |
314 | pre_decompress() |
315 | { | |
316 | cat $TMPFILE | |
317 | } | |
318 | CAT=pre_decompress | |
319 | fi | |
320 | ||
884e1cda HH |
321 | ret=0 |
322 | ||
97bbba69 HH |
323 | if [[ -n "$unpack" ]]; then |
324 | unpack_files | |
325 | elif (( ${#filenames[@]} > 0 )); then | |
b208aad5 | 326 | extract_files |
3ea5d2e2 | 327 | else |
d3be9275 AŻ |
328 | version=$($CAT "$image" | cpio --extract --verbose --quiet --to-stdout -- \ |
329 | $(dracutlibdirs 'dracut-*') 2>/dev/null) | |
4460416a | 330 | ((ret+=$?)) |
ae01bd18 | 331 | echo "Version: $version" |
b208aad5 | 332 | echo |
05d2a145 HB |
333 | if [ "$modules" -eq 1 ]; then |
334 | list_modules | |
335 | echo "========================================================================" | |
336 | else | |
337 | echo -n "Arguments: " | |
d3be9275 AŻ |
338 | $CAT "$image" | cpio --extract --verbose --quiet --to-stdout -- \ |
339 | $(dracutlibdirs build-parameter.txt) 2>/dev/null | |
05d2a145 HB |
340 | echo |
341 | list_modules | |
342 | list_files | |
1ff306a3 | 343 | list_squash_content |
05d2a145 | 344 | fi |
3ea5d2e2 | 345 | fi |
4460416a | 346 | |
884e1cda | 347 | exit $ret |