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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 | |
d3be9275 AŻ |
124 | dracutlibdirs() { |
125 | for d in lib64/dracut lib/dracut usr/lib64/dracut usr/lib/dracut; do | |
126 | echo "$d/$1" | |
127 | done | |
128 | } | |
129 | ||
b208aad5 HH |
130 | extract_files() |
131 | { | |
132 | (( ${#filenames[@]} == 1 )) && nofileinfo=1 | |
3721635b | 133 | for f in "${!filenames[@]}"; do |
b208aad5 HH |
134 | [[ $nofileinfo ]] || echo "initramfs:/$f" |
135 | [[ $nofileinfo ]] || echo "========================================================================" | |
8379784a | 136 | $CAT "$image" 2>/dev/null | cpio --extract --verbose --quiet --to-stdout "$f" 2>/dev/null |
b208aad5 HH |
137 | ((ret+=$?)) |
138 | [[ $nofileinfo ]] || echo "========================================================================" | |
139 | [[ $nofileinfo ]] || echo | |
140 | done | |
141 | } | |
142 | ||
05d2a145 HB |
143 | list_modules() |
144 | { | |
145 | echo "dracut modules:" | |
d3be9275 AŻ |
146 | $CAT "$image" | cpio --extract --verbose --quiet --to-stdout -- \ |
147 | $(dracutlibdirs modules.txt) 2>/dev/null | |
05d2a145 HB |
148 | ((ret+=$?)) |
149 | } | |
150 | ||
b208aad5 HH |
151 | list_files() |
152 | { | |
153 | echo "========================================================================" | |
154 | if [ "$sorted" -eq 1 ]; then | |
bce6823a | 155 | $CAT "$image" 2>/dev/null | cpio --extract --verbose --quiet --list | sort -n -k5 |
b208aad5 | 156 | else |
bce6823a | 157 | $CAT "$image" 2>/dev/null | cpio --extract --verbose --quiet --list | sort -k9 |
b208aad5 HH |
158 | fi |
159 | ((ret+=$?)) | |
160 | echo "========================================================================" | |
161 | } | |
162 | ||
97bbba69 HH |
163 | unpack_files() |
164 | { | |
f81c864e KS |
165 | if (( ${#filenames[@]} > 0 )); then |
166 | for f in "${!filenames[@]}"; do | |
167 | $CAT "$image" 2>/dev/null | cpio -id --quiet $verbose $f | |
168 | ((ret+=$?)) | |
169 | done | |
170 | else | |
171 | $CAT "$image" 2>/dev/null | cpio -id --quiet $verbose | |
172 | ((ret+=$?)) | |
173 | fi | |
97bbba69 HH |
174 | } |
175 | ||
b208aad5 | 176 | |
97bbba69 | 177 | if (( ${#filenames[@]} <= 0 )) && [[ -z "$unpack" ]] && [[ -z "$unpackearly" ]]; then |
6d58fa27 | 178 | echo "Image: $image: $(du -h $image | while read a b || [ -n "$a" ]; do echo $a;done)" |
b208aad5 HH |
179 | echo "========================================================================" |
180 | fi | |
181 | ||
884e1cda | 182 | read -N 6 bin < "$image" |
b208aad5 HH |
183 | case $bin in |
184 | $'\x71\xc7'*|070701) | |
18a5011f | 185 | CAT="cat --" |
b208aad5 HH |
186 | is_early=$(cpio --extract --verbose --quiet --to-stdout -- 'early_cpio' < "$image" 2>/dev/null) |
187 | if [[ "$is_early" ]]; then | |
f81c864e KS |
188 | if [[ -n "$unpack" ]]; then |
189 | # should use --unpackearly for early CPIO | |
190 | : | |
191 | elif [[ -n "$unpackearly" ]]; then | |
97bbba69 HH |
192 | unpack_files |
193 | elif (( ${#filenames[@]} > 0 )); then | |
b208aad5 HH |
194 | extract_files |
195 | else | |
196 | echo "Early CPIO image" | |
197 | list_files | |
198 | fi | |
98fd0693 HH |
199 | if [[ -d "$dracutbasedir/skipcpio" ]]; then |
200 | SKIP="$dracutbasedir/skipcpio/skipcpio" | |
201 | else | |
202 | SKIP="$dracutbasedir/skipcpio" | |
203 | fi | |
b208aad5 HH |
204 | if ! [[ -x $SKIP ]]; then |
205 | echo | |
206 | echo "'$SKIP' not found, cannot display remaining contents!" >&2 | |
207 | echo | |
208 | exit 0 | |
209 | fi | |
210 | fi | |
211 | ;; | |
212 | esac | |
213 | ||
3ce14286 HD |
214 | if [[ $SKIP ]] ; then |
215 | bin="$($SKIP "$image" | { read -N 6 bin && echo "$bin" ; })" | |
216 | else | |
217 | read -N 6 bin < "$image" | |
218 | fi | |
219 | case $bin in | |
220 | $'\x1f\x8b'*) | |
221 | CAT="zcat --" | |
222 | ;; | |
223 | BZh*) | |
224 | CAT="bzcat --" | |
225 | ;; | |
226 | $'\x71\xc7'*|070701) | |
18a5011f | 227 | CAT="cat --" |
3ce14286 HD |
228 | ;; |
229 | $'\x02\x21'*) | |
230 | CAT="lz4 -d -c" | |
231 | ;; | |
232 | $'\x89'LZO$'\0'*) | |
233 | CAT="lzop -d -c" | |
234 | ;; | |
ebfd53e1 | 235 | $'\x28\xB5\x2F\xFD'*) |
7dbadcc7 TPG |
236 | CAT="zstd -d -c" |
237 | ;; | |
3ce14286 HD |
238 | *) |
239 | if echo "test"|xz|xzcat --single-stream >/dev/null 2>&1; then | |
240 | CAT="xzcat --single-stream --" | |
fd9f9024 | 241 | else |
3ce14286 HD |
242 | CAT="xzcat --" |
243 | fi | |
244 | ;; | |
245 | esac | |
66fe35eb | 246 | |
b208aad5 HH |
247 | skipcpio() |
248 | { | |
249 | $SKIP "$@" | $ORIG_CAT | |
250 | } | |
251 | ||
252 | if [[ $SKIP ]]; then | |
253 | ORIG_CAT="$CAT" | |
254 | CAT=skipcpio | |
255 | fi | |
256 | ||
986b12d3 KS |
257 | if (( ${#filenames[@]} > 1 )); then |
258 | TMPFILE="$(mktemp -t --suffix=.cpio lsinitrd.XXXXXX)" | |
259 | $CAT "$image" 2>/dev/null > $TMPFILE | |
260 | trap "rm -f '$TMPFILE'" EXIT | |
261 | pre_decompress() | |
262 | { | |
263 | cat $TMPFILE | |
264 | } | |
265 | CAT=pre_decompress | |
266 | fi | |
267 | ||
884e1cda HH |
268 | ret=0 |
269 | ||
97bbba69 HH |
270 | if [[ -n "$unpack" ]]; then |
271 | unpack_files | |
272 | elif (( ${#filenames[@]} > 0 )); then | |
b208aad5 | 273 | extract_files |
3ea5d2e2 | 274 | else |
d3be9275 AŻ |
275 | version=$($CAT "$image" | cpio --extract --verbose --quiet --to-stdout -- \ |
276 | $(dracutlibdirs 'dracut-*') 2>/dev/null) | |
4460416a | 277 | ((ret+=$?)) |
ae01bd18 | 278 | echo "Version: $version" |
b208aad5 | 279 | echo |
05d2a145 HB |
280 | if [ "$modules" -eq 1 ]; then |
281 | list_modules | |
282 | echo "========================================================================" | |
283 | else | |
284 | echo -n "Arguments: " | |
d3be9275 AŻ |
285 | $CAT "$image" | cpio --extract --verbose --quiet --to-stdout -- \ |
286 | $(dracutlibdirs build-parameter.txt) 2>/dev/null | |
05d2a145 HB |
287 | echo |
288 | list_modules | |
289 | list_files | |
290 | fi | |
3ea5d2e2 | 291 | fi |
4460416a | 292 | |
884e1cda | 293 | exit $ret |