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c0815e4e | 1 | #!/bin/bash |
cc02093d HH |
2 | # -*- mode: shell-script; indent-tabs-mode: nil; sh-basic-offset: 4; -*- |
3 | # ex: ts=8 sw=4 sts=4 et filetype=sh | |
641cc356 JK |
4 | # |
5 | # Generator script for a dracut initramfs | |
6 | # Tries to retain some degree of compatibility with the command line | |
7 | # of the various mkinitrd implementations out there | |
8 | # | |
70c26b7f | 9 | |
cc02093d | 10 | # Copyright 2005-2010 Red Hat, Inc. All rights reserved. |
4f18fe82 HH |
11 | # |
12 | # This program is free software; you can redistribute it and/or modify | |
13 | # it under the terms of the GNU General Public License as published by | |
14 | # the Free Software Foundation; either version 2 of the License, or | |
15 | # (at your option) any later version. | |
16 | # | |
17 | # This program is distributed in the hope that it will be useful, | |
18 | # but WITHOUT ANY WARRANTY; without even the implied warranty of | |
19 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
20 | # GNU General Public License for more details. | |
21 | # | |
22 | # You should have received a copy of the GNU General Public License | |
23 | # along with this program. If not, see <http://www.gnu.org/licenses/>. | |
24 | # | |
ec9315e5 | 25 | |
5616feb0 AT |
26 | |
27 | usage() { | |
28 | # 80x25 linebreak here ^ | |
cc02093d HH |
29 | cat << EOF |
30 | Usage: $0 [OPTION]... <initramfs> <kernel-version> | |
5616feb0 AT |
31 | Creates initial ramdisk images for preloading modules |
32 | ||
39ff0682 | 33 | -f, --force Overwrite existing initramfs file. |
5616feb0 AT |
34 | -m, --modules [LIST] Specify a space-separated list of dracut modules to |
35 | call when building the initramfs. Modules are located | |
73198d53 | 36 | in /usr/share/dracut/modules.d. |
39ff0682 | 37 | -o, --omit [LIST] Omit a space-separated list of dracut modules. |
3e17f33b | 38 | -a, --add [LIST] Add a space-separated list of dracut modules. |
5616feb0 | 39 | -d, --drivers [LIST] Specify a space-separated list of kernel modules to |
cb47caf7 HH |
40 | exclusively include in the initramfs. |
41 | --add-drivers [LIST] Specify a space-separated list of kernel | |
42 | modules to add to the initramfs. | |
8fa510d4 DH |
43 | --filesystems [LIST] Specify a space-separated list of kernel filesystem |
44 | modules to exclusively include in the generic | |
45 | initramfs. | |
2b9dfbbe HH |
46 | -k, --kmoddir [DIR] Specify the directory, where to look for kernel |
47 | modules | |
33ee031c HH |
48 | --fwdir [DIR] Specify additional directories, where to look for |
49 | firmwares, separated by : | |
50 | --kernel-only Only install kernel drivers and firmware files | |
51 | --no-kernel Do not install kernel drivers and firmware files | |
0ca3a5ee AŻ |
52 | --ignore-kernel-modules |
53 | Don't try to load modules. It automatically implies | |
cc02093d HH |
54 | '--no-kernel'. It's assumed that everything needed |
55 | is built into kernel. | |
5be225d2 HH |
56 | --strip Strip binaries in the initramfs |
57 | --nostrip Do not strip binaries in the initramfs (default) | |
2f02ae9d HH |
58 | --mdadmconf Include local /etc/mdadm.conf |
59 | --nomdadmconf Do not include local /etc/mdadm.conf | |
7a34efa5 | 60 | --lvmconf Include local /etc/lvm/lvm.conf |
cc02093d | 61 | --nolvmconf Do not include local /etc/lvm/lvm.conf |
5616feb0 | 62 | -h, --help This message |
00531568 | 63 | --debug Output debug information of the build process |
5616feb0 AT |
64 | -v, --verbose Verbose output during the build process |
65 | -c, --conf [FILE] Specify configuration file to use. | |
66 | Default: /etc/dracut.conf | |
cc02093d HH |
67 | --confdir [DIR] Specify configuration directory to use *.conf files |
68 | from. Default: /etc/dracut.conf.d | |
5616feb0 AT |
69 | -l, --local Local mode. Use modules from the current working |
70 | directory instead of the system-wide installed in | |
73198d53 | 71 | /usr/share/dracut/modules.d. |
5616feb0 | 72 | Useful when running dracut from a git checkout. |
7c179686 | 73 | -H, --hostonly Host-Only mode: Install only what is needed for |
5616feb0 | 74 | booting the local host instead of a generic host. |
7c179686 | 75 | --fstab Use /etc/fstab to determine the root device. |
5616feb0 | 76 | -i, --include [SOURCE] [TARGET] |
39ff0682 AT |
77 | Include the files in the SOURCE directory into the |
78 | Target directory in the final initramfs. | |
79 | -I, --install [LIST] Install the space separated list of files into the | |
80 | initramfs. | |
5b158ad3 | 81 | --gzip Compress the generated initramfs using gzip. |
cc02093d HH |
82 | This will be done by default, unless another |
83 | compression option or --no-compress is passed. | |
5b158ad3 | 84 | --bzip2 Compress the generated initramfs using bzip2. |
cc02093d HH |
85 | Make sure your kernel has bzip2 decompression support |
86 | compiled in, otherwise you will not be able to boot. | |
87 | --lzma Compress the generated initramfs using lzma. | |
88 | Make sure your kernel has lzma support compiled in, | |
89 | otherwise you will not be able to boot. | |
5b158ad3 | 90 | --no-compress Do not compress the generated initramfs. This will |
cc02093d | 91 | override any other compression options. |
5b11bb73 | 92 | --list-modules List all available dracut modules. |
cc02093d | 93 | EOF |
5616feb0 AT |
94 | } |
95 | ||
5bc545ed VL |
96 | # Little helper function for reading args from the commandline. |
97 | # it automatically handles -a b and -a=b variants, and returns 1 if | |
98 | # we need to shift $3. | |
99 | read_arg() { | |
100 | # $1 = arg name | |
101 | # $2 = arg value | |
102 | # $3 = arg parameter | |
103 | local rematch='^[^=]*=(.*)$' | |
104 | if [[ $2 =~ $rematch ]]; then | |
cc02093d | 105 | read "$1" <<< "${BASH_REMATCH[1]}" |
5bc545ed | 106 | else |
cc02093d HH |
107 | read "$1" <<< "$3" |
108 | # There is no way to shift our callers args, so | |
109 | # return 1 to indicate they should do it instead. | |
110 | return 1 | |
5bc545ed VL |
111 | fi |
112 | } | |
113 | ||
b368a5f3 | 114 | while (($# > 0)); do |
5bc545ed | 115 | case ${1%%=*} in |
cc02093d HH |
116 | -m|--modules) read_arg dracutmodules_l "$@" || shift;; |
117 | -o|--omit) read_arg omit_dracutmodules_l "$@" || shift;; | |
118 | -a|--add) read_arg add_dracutmodules_l "$@" || shift;; | |
119 | -d|--drivers) read_arg drivers_l "$@" || shift;; | |
120 | --add-drivers) read_arg add_drivers_l "$@" || shift;; | |
121 | --filesystems) read_arg filesystems_l "$@" || shift;; | |
122 | -k|--kmoddir) read_arg drivers_dir_l "$@" || shift;; | |
123 | -c|--conf) read_arg conffile "$@" || shift;; | |
124 | --confdir) read_arg confdir "$@" || shift;; | |
125 | -I|--install) read_arg install_items "$@" || shift;; | |
126 | --fwdir) read_arg fw_dir_l "$@" || shift;; | |
127 | -f|--force) force=yes;; | |
128 | --kernel-only) kernel_only="yes"; no_kernel="no";; | |
129 | --no-kernel) kernel_only="no"; no_kernel="yes";; | |
130 | --strip) do_strip_l="yes";; | |
131 | --nostrip) do_strip_l="no";; | |
690396a5 VL |
132 | --mdadmconf) mdadmconf_l="yes";; |
133 | --nomdadmconf) mdadmconf_l="no";; | |
134 | --lvmconf) lvmconf_l="yes";; | |
135 | --nolvmconf) lvmconf_l="no";; | |
cc02093d HH |
136 | --debug) debug="yes";; |
137 | -v|--verbose) beverbose="yes";; | |
138 | -l|--local) allowlocal="yes" ;; | |
139 | -H|--hostonly) hostonly_l="yes" ;; | |
140 | --fstab) use_fstab_l="yes" ;; | |
141 | -h|--help) usage; exit 1 ;; | |
142 | -i|--include) include_src="$2"; include_target="$3"; shift 2;; | |
690396a5 | 143 | --bzip2) [[ $compress != cat ]] && compress="bzip2 -9";; |
eaa62cd5 | 144 | --lzma) [[ $compress != cat ]] && compress="lzma -9";; |
690396a5 | 145 | --no-compress) compress="cat";; |
b2ff4317 VL |
146 | --gzip) if [[ $compress != cat ]]; then |
147 | type pigz > /dev/null 2>&1 && compress="pigz -9" || \ | |
148 | compress="gzip -9" | |
149 | fi;; | |
5bc545ed VL |
150 | --ignore-kernel-modules) kernel_only="no"; no_kernel="yes" |
151 | ignore_kmodules="yes" | |
152 | omit_dracutmodules_l+=\ kernel-modules | |
153 | ;; | |
5b11bb73 HH |
154 | --list-modules) |
155 | do_list="yes"; | |
156 | ;; | |
cc02093d HH |
157 | -*) printf "\nUnknown option: %s\n\n" "$1" >&2; usage; exit 1;; |
158 | *) break ;; | |
641cc356 | 159 | esac |
b368a5f3 | 160 | shift |
641cc356 | 161 | done |
4cba351e | 162 | |
f8545d04 HH |
163 | PATH=/sbin:/bin:/usr/sbin:/usr/bin |
164 | export PATH | |
a55711cd | 165 | |
c36ce334 VL |
166 | [[ $debug ]] && { |
167 | export PS4='${BASH_SOURCE}@${LINENO}(${FUNCNAME[0]}): '; | |
168 | set -x | |
169 | } | |
170 | ||
5d791c0e HH |
171 | [[ $dracutbasedir ]] || dracutbasedir=/usr/share/dracut |
172 | ||
cc02093d HH |
173 | [[ $allowlocal && -f "$(readlink -f ${0%/*})/dracut-functions" ]] && \ |
174 | dracutbasedir="${0%/*}" | |
42c71947 | 175 | |
f1336ac7 | 176 | # if we were not passed a config file, try the default one |
42c71947 | 177 | if [[ ! -f $conffile ]]; then |
eebc929a VL |
178 | [[ $allowlocal ]] && conffile="$dracutbasedir/dracut.conf" || \ |
179 | conffile="/etc/dracut.conf" | |
42c71947 | 180 | fi |
f1336ac7 | 181 | |
2c2c4580 | 182 | if [[ ! -d $confdir ]]; then |
ae24b114 | 183 | [[ $allowlocal ]] && confdir="$dracutbasedir/dracut.conf.d" || \ |
eebc929a | 184 | confdir="/etc/dracut.conf.d" |
2c2c4580 HH |
185 | fi |
186 | ||
2245f372 AB |
187 | # source our config file |
188 | [[ -f $conffile ]] && . "$conffile" | |
189 | ||
2c2c4580 | 190 | # source our config dir |
6438b4fe | 191 | if [[ $confdir && -d $confdir ]]; then |
2c2c4580 | 192 | for f in "$confdir"/*.conf; do |
cc02093d | 193 | [[ -e $f ]] && . "$f" |
2c2c4580 HH |
194 | done |
195 | fi | |
196 | ||
d87c2708 HH |
197 | # these optins add to the stuff in the config file |
198 | [[ $add_dracutmodules_l ]] && add_dracutmodules+=" $add_dracutmodules_l" | |
199 | [[ $add_drivers_l ]] && add_drivers+=" $add_drivers_l" | |
200 | ||
f1336ac7 | 201 | # these options override the stuff in the config file |
e12aac5e | 202 | [[ $dracutmodules_l ]] && dracutmodules=$dracutmodules_l |
3274a8f9 | 203 | [[ $omit_dracutmodules_l ]] && omit_dracutmodules=$omit_dracutmodules_l |
e19d6bf6 | 204 | [[ $drivers_l ]] && drivers=$drivers_l |
8fa510d4 | 205 | [[ $filesystems_l ]] && filesystems=$filesystems_l |
26537a5b HH |
206 | [[ $drivers_dir_l ]] && drivers_dir=$drivers_dir_l |
207 | [[ $fw_dir_l ]] && fw_dir=$fw_dir_l | |
31f7db66 | 208 | [[ $do_strip_l ]] && do_strip=$do_strip_l |
ba726310 | 209 | [[ $hostonly_l ]] && hostonly=$hostonly_l |
7c179686 | 210 | [[ $use_fstab_l ]] && use_fstab=$use_fstab_l |
2f02ae9d | 211 | [[ $mdadmconf_l ]] && mdadmconf=$mdadmconf_l |
7a34efa5 | 212 | [[ $lvmconf_l ]] && lvmconf=$lvmconf_l |
73198d53 | 213 | [[ $dracutbasedir ]] || dracutbasedir=/usr/share/dracut |
33ee031c | 214 | [[ $fw_dir ]] || fw_dir=/lib/firmware |
5be225d2 | 215 | [[ $do_strip ]] || do_strip=no |
ddfd1d10 VL |
216 | # eliminate IFS hackery when messing with fw_dir |
217 | fw_dir=${fw_dir//:/ } | |
9a8a00cf | 218 | |
ba726310 | 219 | [[ $hostonly = yes ]] && hostonly="-h" |
ba67b923 | 220 | [[ $hostonly != "-h" ]] && unset hostonly |
5b158ad3 | 221 | [[ $compress ]] || compress="gzip -9" |
ba726310 | 222 | |
5d791c0e | 223 | if [[ -f $dracutbasedir/dracut-functions ]]; then |
cc02093d | 224 | . $dracutbasedir/dracut-functions |
adbc8a42 | 225 | else |
cc02093d HH |
226 | echo "Cannot find $dracutbasedir/dracut-functions." |
227 | echo "Are you running from a git checkout?" | |
228 | echo "Try passing -l as an argument to $0" | |
229 | exit 1 | |
adbc8a42 | 230 | fi |
22fd1627 | 231 | |
5d791c0e | 232 | dracutfunctions=$dracutbasedir/dracut-functions |
5cad5bb5 | 233 | export dracutfunctions |
9a8a00cf | 234 | |
5b11bb73 HH |
235 | [[ $do_list = yes ]] && { |
236 | for mod in $dracutbasedir/modules.d/*; do | |
237 | [[ -d $mod ]] || continue; | |
238 | [[ -e $mod/install || -e $mod/installkernel ]] || continue; | |
239 | echo ${mod##*/??} | |
240 | done | |
241 | exit 0 | |
242 | } | |
243 | ||
fa5cd2bf AŻ |
244 | # Detect lib paths |
245 | [[ $libdir ]] || for libdir in /lib64 /lib; do | |
246 | [[ -d $libdir ]] && break | |
247 | done || { | |
248 | derror 'No lib directory?!!!' | |
249 | exit 1 | |
250 | } | |
251 | [[ $usrlibdir ]] || for usrlibdir in /usr/lib64 /usr/lib; do | |
252 | [[ -d $usrlibdir ]] && break | |
253 | done || dwarning 'No usr/lib directory!' | |
254 | ||
66ac3cd1 | 255 | # This is kinda legacy -- eventually it should go away. |
f1336ac7 | 256 | case $dracutmodules in |
66ac3cd1 | 257 | ""|auto) dracutmodules="all" ;; |
f1336ac7 | 258 | esac |
e12aac5e | 259 | |
c8937ec4 | 260 | [[ $2 ]] && kernel=$2 || kernel=$(uname -r) |
454771cd HH |
261 | [[ $1 ]] && outfile=$1 || outfile="/boot/initramfs-$kernel.img" |
262 | abs_outfile=$(readlink -f "$outfile") && outfile="$abs_outfile" | |
ec9315e5 | 263 | |
f24a2d46 | 264 | srcmods="/lib/modules/$kernel/" |
ecf42850 | 265 | [[ $drivers_dir ]] && { |
22ecea45 | 266 | if vercmp $(modprobe --version | cut -d' ' -f3) lt 3.7; then |
ecf42850 AŻ |
267 | derror 'To use --kmoddir option module-init-tools >= 3.7 is required.' |
268 | exit 1 | |
269 | fi | |
270 | srcmods="$drivers_dir" | |
271 | } | |
f24a2d46 HH |
272 | export srcmods |
273 | ||
c8937ec4 | 274 | if [[ -f $outfile && ! $force ]]; then |
641cc356 | 275 | echo "Will not override existing initramfs ($outfile) without --force" |
ec9315e5 JK |
276 | exit 1 |
277 | fi | |
278 | ||
ebfdb219 VL |
279 | outdir=${outfile%/*} |
280 | if [[ ! -d "$outdir" ]]; then | |
454771cd HH |
281 | echo "Can't write $outfile: Directory $outdir does not exist." |
282 | exit 1 | |
ebfdb219 | 283 | elif [[ ! -w "$outdir" ]]; then |
454771cd HH |
284 | echo "No permission to write $outdir." |
285 | exit 1 | |
0a325a91 | 286 | elif [[ -f "$outfile" && ! -w "$outfile" ]]; then |
734a0d9e HH |
287 | echo "No permission to write $outfile." |
288 | exit 1 | |
289 | fi | |
290 | ||
cc02093d HH |
291 | hookdirs="cmdline pre-udev pre-trigger netroot pre-mount" |
292 | hookdirs+=" pre-pivot mount emergency" | |
49c68fa4 | 293 | |
b2ff4317 | 294 | [[ $TMPDIR && ! -w $TMPDIR ]] && unset TMPDIR |
49c68fa4 | 295 | readonly initdir=$(mktemp -d -t initramfs.XXXXXX) |
734a0d9e | 296 | |
cc02093d HH |
297 | # clean up after ourselves no matter how we die. |
298 | trap 'ret=$?;rm -rf "$initdir";exit $ret;' EXIT | |
299 | # clean up after ourselves no matter how we die. | |
300 | trap 'exit 1;' SIGINT | |
ec9315e5 | 301 | |
f6f74096 DD |
302 | # Need to be able to have non-root users read stuff (rpcbind etc) |
303 | chmod 755 "$initdir" | |
304 | ||
5d791c0e | 305 | export initdir hookdirs dracutbasedir dracutmodules drivers \ |
cb47caf7 | 306 | fw_dir drivers_dir debug beverbose no_kernel kernel_only \ |
7c179686 | 307 | add_drivers mdadmconf lvmconf filesystems ignore_kmodules \ |
fa5cd2bf | 308 | use_fstab libdir usrlibdir |
f4fff04e | 309 | |
98adb06e | 310 | if [[ $kernel_only != yes ]]; then |
33ee031c | 311 | # Create some directory structure first |
cc02093d HH |
312 | for d in bin sbin usr/bin usr/sbin usr/lib etc \ |
313 | proc sys sysroot tmp dev/pts var/run; do | |
314 | inst_dir "/$d"; | |
33ee031c HH |
315 | done |
316 | fi | |
0f86847d | 317 | |
66ac3cd1 VL |
318 | # check all our modules to see if they should be sourced. |
319 | # This builds a list of modules that we will install next. | |
0c2e3d12 | 320 | check_modules |
cc02093d | 321 | |
95bde758 | 322 | # source our modules. |
5d791c0e | 323 | for moddir in "$dracutbasedir/modules.d"/[0-9][0-9]*; do |
0c2e3d12 | 324 | mod=${moddir##*/}; mod=${mod#[0-9][0-9]} |
66ac3cd1 | 325 | if strstr "$mods_to_load" " $mod "; then |
cc02093d HH |
326 | dinfo "*** Sourcing module $mod" |
327 | if [[ $kernel_only = yes ]]; then | |
328 | [[ -x $moddir/installkernel ]] && . "$moddir/installkernel" | |
329 | else | |
330 | . "$moddir/install" | |
331 | if [[ $no_kernel != yes && -x $moddir/installkernel ]]; then | |
332 | . "$moddir/installkernel" | |
333 | fi | |
334 | fi | |
335 | mods_to_load=${mods_to_load// $mod /} | |
66ac3cd1 | 336 | fi |
15136762 | 337 | done |
20abd914 | 338 | unset moddir |
aabc0553 | 339 | |
0f86847d | 340 | ## final stuff that has to happen |
bc6b0dec | 341 | |
0f86847d | 342 | # generate module dependencies for the initrd |
8a474569 VL |
343 | if [[ -d $initdir/lib/modules/$kernel ]] && \ |
344 | ! depmod -a -b "$initdir" $kernel; then | |
345 | derror "\"depmod -a $kernel\" failed." | |
346 | exit 1 | |
f1336ac7 | 347 | fi |
ec9315e5 | 348 | |
f1336ac7 | 349 | if [[ $include_src && $include_target ]]; then |
88ffd2df VL |
350 | mkdir -p "$initdir$include_target" |
351 | cp -a -t "$initdir$include_target" "$include_src"/* | |
f1336ac7 | 352 | fi |
88ffd2df | 353 | |
39ff0682 | 354 | for item in $install_items; do |
cc02093d | 355 | dracut_install "$item" |
39ff0682 AT |
356 | done |
357 | unset item | |
358 | ||
fdc421db HH |
359 | # make sure that library links are correct and up to date |
360 | cp -ar /etc/ld.so.conf* "$initdir"/etc | |
cc02093d HH |
361 | ldconfig -r "$initdir" || [[ $UID != "0" ]] && \ |
362 | dinfo "ldconfig might need uid=0 (root) for chroot()" | |
fdc421db | 363 | |
98adb06e | 364 | [[ $beverbose = yes ]] && (du -c "$initdir" | sort -n) |
c4ad7fff | 365 | |
31f7db66 | 366 | # strip binaries |
98adb06e | 367 | if [[ $do_strip = yes ]] ; then |
d0ced35f | 368 | for p in strip grep find; do |
cc02093d HH |
369 | if ! type -P $p >/dev/null; then |
370 | derror "Could not find '$p'. You should run $0 with '--nostrip'." | |
371 | do_strip=no | |
372 | fi | |
31f7db66 HH |
373 | done |
374 | fi | |
375 | ||
98adb06e | 376 | if [[ $do_strip = yes ]] ; then |
cc02093d HH |
377 | for f in $(find "$initdir" -type f \ |
378 | \( -perm -0100 -or -perm -0010 -or -perm -0001 \ | |
379 | -or -path '*/lib/modules/*.ko' \) ); do | |
380 | dinfo "Stripping $f" | |
381 | strip -g "$f" 2>/dev/null|| : | |
31f7db66 HH |
382 | done |
383 | fi | |
384 | ||
6292ee9d | 385 | type hardlink &>/dev/null && { |
cc02093d | 386 | hardlink "$initdir" 2>&1 |
6292ee9d HH |
387 | } |
388 | ||
937f678e VL |
389 | if ! ( cd "$initdir"; find . |cpio -R 0:0 -H newc -o --quiet | \ |
390 | $compress > "$outfile"; ); then | |
734a0d9e HH |
391 | derror "dracut: creation of $outfile failed" |
392 | exit 1 | |
393 | fi | |
c4ad7fff | 394 | |
98adb06e | 395 | [[ $beverbose = yes ]] && ls -lh "$outfile" |
1faecdc1 | 396 | |
3da58569 | 397 | exit 0 |