Contents of /trunk/grubby/grubby-bls
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Tue Jul 7 11:22:29 2020 UTC (4 years, 2 months ago) by niro
File size: 17135 byte(s)
Tue Jul 7 11:22:29 2020 UTC (4 years, 2 months ago) by niro
File size: 17135 byte(s)
Print information about the entry set as default by grubby-bls script
1 | #!/bin/bash |
2 | # |
3 | # grubby wrapper to manage BootLoaderSpec files |
4 | # |
5 | # |
6 | # Copyright 2018 Red Hat, Inc. All rights reserved. |
7 | # |
8 | # This program is free software; you can redistribute it and/or modify |
9 | # it under the terms of the GNU General Public License as published by |
10 | # the Free Software Foundation; either version 2 of the License, or |
11 | # (at your option) any later version. |
12 | # |
13 | # This program is distributed in the hope that it will be useful, |
14 | # but WITHOUT ANY WARRANTY; without even the implied warranty of |
15 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
16 | # GNU General Public License for more details. |
17 | # |
18 | # You should have received a copy of the GNU General Public License |
19 | # along with this program. If not, see <http://www.gnu.org/licenses/>. |
20 | |
21 | readonly SCRIPTNAME="${0##*/}" |
22 | |
23 | CMDLINE_LINUX_DEBUG=" systemd.log_level=debug systemd.log_target=kmsg" |
24 | LINUX_DEBUG_VERSION_POSTFIX="_with_debugging" |
25 | LINUX_DEBUG_TITLE_POSTFIX=" with debugging" |
26 | |
27 | declare -a bls_file |
28 | declare -a bls_title |
29 | declare -a bls_version |
30 | declare -a bls_linux |
31 | declare -a bls_initrd |
32 | declare -a bls_options |
33 | declare -a bls_id |
34 | |
35 | [[ -f /etc/sysconfig/kernel ]] && . /etc/sysconfig/kernel |
36 | [[ -f /etc/os-release ]] && . /etc/os-release |
37 | read MACHINE_ID < /etc/machine-id |
38 | arch=$(uname -m) |
39 | |
40 | if [[ $arch = 's390' || $arch = 's390x' ]]; then |
41 | bootloader="zipl" |
42 | else |
43 | bootloader="grub2" |
44 | fi |
45 | |
46 | print_error() { |
47 | echo "$1" >&2 |
48 | exit 1 |
49 | } |
50 | |
51 | print_info() { |
52 | echo "$1" >&2 |
53 | } |
54 | |
55 | if [[ ${#} = 0 ]]; then |
56 | print_error "no action specified" |
57 | fi |
58 | |
59 | get_bls_value() { |
60 | local bls="$1" && shift |
61 | local key="$1" && shift |
62 | |
63 | echo "$(grep "^${key}[ \t]" "${bls}" | sed -e "s!^${key}[ \t]*!!")" |
64 | } |
65 | |
66 | set_bls_value() { |
67 | local bls="$1" && shift |
68 | local key="$1" && shift |
69 | local value="$1" && shift |
70 | |
71 | sed -i -e "s!^${key}.*!${key} ${value}!" "${bls}" |
72 | } |
73 | |
74 | append_bls_value() { |
75 | local bls="$1" && shift |
76 | local key="$1" && shift |
77 | local value="$1" && shift |
78 | |
79 | old_value="$(get_bls_value ${bls} ${key})" |
80 | set_bls_value "${bls}" "${key}" "${old_value}${value}" |
81 | } |
82 | |
83 | get_bls_values() { |
84 | count=0 |
85 | for bls in $(ls -vr ${blsdir}/*.conf 2> /dev/null); do |
86 | bls_file[$count]="${bls}" |
87 | bls_title[$count]="$(get_bls_value ${bls} title)" |
88 | bls_version[$count]="$(get_bls_value ${bls} version)" |
89 | bls_linux[$count]="$(get_bls_value ${bls} linux)" |
90 | bls_initrd[$count]="$(get_bls_value ${bls} initrd)" |
91 | bls_options[$count]="$(get_bls_value ${bls} options)" |
92 | bls_id[$count]="$(get_bls_value ${bls} id)" |
93 | |
94 | count=$((count+1)) |
95 | done |
96 | } |
97 | |
98 | get_default_index() { |
99 | local default="" |
100 | local index="-1" |
101 | local title="" |
102 | local version="" |
103 | if [[ $bootloader = "grub2" ]]; then |
104 | default="$(grep '^saved_entry=' ${env} | sed -e 's/^saved_entry=//')" |
105 | else |
106 | default="$(grep '^default=' ${zipl_config} | sed -e 's/^default=//')" |
107 | fi |
108 | |
109 | if [[ -z $default ]]; then |
110 | index=0 |
111 | elif [[ $default =~ ^[0-9]+$ ]]; then |
112 | index="$default" |
113 | fi |
114 | |
115 | # GRUB2 and zipl use different fields to set the default entry |
116 | if [[ $bootloader = "grub2" ]]; then |
117 | title="$default" |
118 | else |
119 | version="$default" |
120 | fi |
121 | |
122 | for i in ${!bls_file[@]}; do |
123 | if [[ $title = ${bls_title[$i]} || $version = ${bls_version[$i]} || |
124 | $i -eq $index ]]; then |
125 | echo $i |
126 | return |
127 | fi |
128 | done |
129 | } |
130 | |
131 | display_default_value() { |
132 | case "$display_default" in |
133 | kernel) |
134 | echo "${bls_linux[$default_index]}" |
135 | exit 0 |
136 | ;; |
137 | index) |
138 | echo "$default_index" |
139 | exit 0 |
140 | ;; |
141 | title) |
142 | echo "${bls_title[$default_index]}" |
143 | exit 0 |
144 | ;; |
145 | esac |
146 | } |
147 | |
148 | param_to_indexes() { |
149 | local param="$1" |
150 | local indexes="" |
151 | |
152 | if [[ $param = "ALL" ]]; then |
153 | for i in ${!bls_file[@]}; do |
154 | indexes="$indexes $i" |
155 | done |
156 | echo -n $indexes |
157 | return |
158 | fi |
159 | |
160 | if [[ $param = "DEFAULT" ]]; then |
161 | echo -n $default_index |
162 | return |
163 | fi |
164 | |
165 | for i in ${!bls_file[@]}; do |
166 | if [[ $param = "${bls_linux[$i]}" || "/${param##*/}" = "${bls_linux[$i]}" ]]; then |
167 | indexes="$indexes $i" |
168 | fi |
169 | |
170 | if [[ $param = "TITLE=${bls_title[$i]}" ]]; then |
171 | indexes="$indexes $i" |
172 | fi |
173 | |
174 | if [[ $param = $i ]]; then |
175 | indexes="$indexes $i" |
176 | fi |
177 | done |
178 | |
179 | if [[ -n $indexes ]]; then |
180 | echo -n $indexes |
181 | return |
182 | fi |
183 | |
184 | echo -n "-1" |
185 | } |
186 | |
187 | display_info_values() { |
188 | local indexes=($(param_to_indexes "$1")) |
189 | |
190 | for i in ${indexes[*]}; do |
191 | echo "index=$i" |
192 | echo "kernel=${bls_linux[$i]}" |
193 | echo "args=\"${bls_options[$i]}\"" |
194 | echo "initrd=${bls_initrd[$i]}" |
195 | echo "title=${bls_title[$i]}" |
196 | done |
197 | exit 0 |
198 | } |
199 | |
200 | mkbls() { |
201 | local kernel=$1 && shift |
202 | local kernelver=$1 && shift |
203 | local datetime=$1 && shift |
204 | |
205 | local debugname="" |
206 | local flavor="" |
207 | |
208 | if [[ $kernelver == *\+* ]] ; then |
209 | local flavor=-"${kernelver##*+}" |
210 | if [[ $flavor == "-debug" ]]; then |
211 | local debugname="with debugging" |
212 | local debugid="-debug" |
213 | fi |
214 | fi |
215 | |
216 | cat <<EOF |
217 | title ${NAME} (${kernelver}) ${VERSION}${debugname} |
218 | version ${kernelver}${debugid} |
219 | linux ${kernel} |
220 | initrd /initramfs-${kernelver}.img |
221 | options \$kernelopts |
222 | id ${ID}-${datetime}-${kernelver}${debugid} |
223 | grub_users \$grub_users |
224 | grub_arg --unrestricted |
225 | grub_class kernel${flavor} |
226 | EOF |
227 | } |
228 | |
229 | remove_bls_fragment() { |
230 | local indexes=($(param_to_indexes "$1")) |
231 | |
232 | if [[ $indexes = "-1" ]]; then |
233 | print_error "The param $1 is incorrect" |
234 | fi |
235 | |
236 | for i in ${indexes[*]}; do |
237 | rm -f "${bls_file[$i]}" |
238 | done |
239 | |
240 | get_bls_values |
241 | |
242 | update_grubcfg |
243 | } |
244 | |
245 | add_bls_fragment() { |
246 | local kernel="$1" && shift |
247 | local title="$1" && shift |
248 | local options="$1" && shift |
249 | local initrd="$1" && shift |
250 | local extra_initrd="$1" && shift |
251 | |
252 | if [[ $kernel = *"vmlinuz-"* ]]; then |
253 | kernelver="${kernel##*/vmlinuz-}" |
254 | prefix="vmlinuz-" |
255 | else |
256 | kernelver="${kernel##*/}" |
257 | fi |
258 | |
259 | if [[ ! -f "/boot/${prefix}${kernelver}" ]] && |
260 | [[ $bad_image != "true" ]]; then |
261 | print_error "The ${kernelver} kernel isn't installed in the machine" |
262 | fi |
263 | |
264 | if [[ -z $title ]]; then |
265 | print_error "The kernel title must be specified" |
266 | fi |
267 | |
268 | if [[ ! -d $blsdir ]]; then |
269 | install -m 700 -d "${blsdir}" |
270 | fi |
271 | |
272 | bls_target="${blsdir}/${MACHINE_ID}-${kernelver}.conf" |
273 | kernel_dir="/lib/modules/${kernelver}" |
274 | if [[ -f "${kernel_dir}/bls.conf" ]]; then |
275 | cp -aT "${kernel_dir}/bls.conf" "${bls_target}" || exit $? |
276 | else |
277 | if [[ -d $kernel_dir ]]; then |
278 | datetime="$(date -u +%Y%m%d%H%M%S -d "$(stat -c '%y' "${kernel_dir}")")" |
279 | else |
280 | datetime=0 |
281 | fi |
282 | mkbls "${kernel}" "${kernelver}" "${datetime}" > "${bls_target}" |
283 | fi |
284 | |
285 | if [[ -n $title ]]; then |
286 | set_bls_value "${bls_target}" "title" "${title}" |
287 | fi |
288 | |
289 | if [[ -n $options ]]; then |
290 | set_bls_value "${bls_target}" "options" "${options}" |
291 | fi |
292 | |
293 | if [[ -n $initrd ]]; then |
294 | set_bls_value "${bls_target}" "initrd" "${initrd}" |
295 | fi |
296 | |
297 | if [[ -n $extra_initrd ]]; then |
298 | append_bls_value "${bls_target}" "initrd" "${extra_initrd}" |
299 | fi |
300 | |
301 | if [[ $MAKEDEBUG = "yes" ]]; then |
302 | arch="$(uname -m)" |
303 | bls_debug="$(echo ${bls_target} | sed -e "s/\.${arch}/-debug.${arch}/")" |
304 | cp -aT "${bls_target}" "${bls_debug}" |
305 | append_bls_value "${bls_debug}" "title" "${LINUX_DEBUG_TITLE_POSTFIX}" |
306 | append_bls_value "${bls_debug}" "version" "${LINUX_DEBUG_VERSION_POSTFIX}" |
307 | append_bls_value "${bls_debug}" "options" "${CMDLINE_LINUX_DEBUG}" |
308 | blsid="$(get_bls_value ${bls_debug} "id" | sed -e "s/\.${arch}/-debug.${arch}/")" |
309 | set_bls_value "${bls_debug}" "id" "${blsid}" |
310 | fi |
311 | |
312 | get_bls_values |
313 | |
314 | if [[ $make_default = "true" ]]; then |
315 | set_default_bls "TITLE=${title}" |
316 | fi |
317 | |
318 | update_grubcfg |
319 | |
320 | exit 0 |
321 | } |
322 | |
323 | update_args() { |
324 | local args=$1 && shift |
325 | local remove_args=($1) && shift |
326 | local add_args=($1) && shift |
327 | |
328 | for arg in ${remove_args[*]}; do |
329 | args="$(echo $args | sed -e "s!$arg[^ ]*!!")" |
330 | done |
331 | |
332 | for arg in ${add_args[*]}; do |
333 | if [[ $arg = *"="* ]]; then |
334 | value=${arg##*=} |
335 | key=${arg%%=$value} |
336 | exist=$(echo $args | grep "${key}=") |
337 | if [[ -n $exist ]]; then |
338 | args="$(echo $args | sed -e "s!$key=[^ ]*!$key=$value!")" |
339 | else |
340 | args="$args $key=$value" |
341 | fi |
342 | else |
343 | exist=$(echo $args | grep $arg) |
344 | if ! [[ -n $exist ]]; then |
345 | args="$args $arg" |
346 | fi |
347 | fi |
348 | done |
349 | |
350 | echo ${args} |
351 | } |
352 | |
353 | update_bls_fragment() { |
354 | local indexes=($(param_to_indexes "$1")) && shift |
355 | local remove_args=$1 && shift |
356 | local add_args=$1 && shift |
357 | local initrd=$1 && shift |
358 | |
359 | for i in ${indexes[*]}; do |
360 | if [[ -n $remove_args || -n $add_args ]]; then |
361 | local new_args="$(update_args "${bls_options[$i]}" "${remove_args}" "${add_args}")" |
362 | set_bls_value "${bls_file[$i]}" "options" "${new_args}" |
363 | fi |
364 | |
365 | if [[ -n $initrd ]]; then |
366 | set_bls_value "${bls_file[$i]}" "initrd" "${initrd}" |
367 | fi |
368 | done |
369 | |
370 | update_grubcfg |
371 | } |
372 | |
373 | set_default_bls() { |
374 | local index=($(param_to_indexes "$1")) |
375 | |
376 | if [[ $bootloader = grub2 ]]; then |
377 | grub2-editenv "${env}" set saved_entry="${bls_title[$index]}" |
378 | else |
379 | local default="${bls_version[$index]}" |
380 | local current="$(grep '^default=' ${zipl_config} | sed -e 's/^default=//')" |
381 | if [[ -n $current ]]; then |
382 | sed -i -e "s,^default=.*,default=${default}," "${zipl_config}" |
383 | else |
384 | echo "default=${default}" >> "${zipl_config}" |
385 | fi |
386 | fi |
387 | |
388 | print_info "The default is ${bls_file[$index]} with index $index and kernel ${bls_linux[$index]}" |
389 | } |
390 | |
391 | remove_var_prefix() { |
392 | if [[ -n $remove_kernel && $remove_kernel =~ ^/ ]]; then |
393 | remove_kernel="/${remove_kernel##*/}" |
394 | fi |
395 | |
396 | if [[ -n $initrd ]]; then |
397 | initrd="/${initrd##*/}" |
398 | fi |
399 | |
400 | if [[ -n $extra_initrd ]]; then |
401 | extra_initrd=" /${extra_initrd##*/}" |
402 | fi |
403 | |
404 | if [[ -n $kernel ]]; then |
405 | kernel="/${kernel##*/}" |
406 | fi |
407 | |
408 | if [[ -n $update_kernel && $update_kernel =~ ^/ ]]; then |
409 | update_kernel="/${update_kernel##*/}" |
410 | fi |
411 | } |
412 | |
413 | update_grubcfg() |
414 | { |
415 | if [[ $arch = 'ppc64' || $arch = 'ppc64le' ]]; then |
416 | grub2-mkconfig -o /boot/grub2/grub.cfg >& /dev/null |
417 | fi |
418 | } |
419 | |
420 | print_usage() |
421 | { |
422 | cat <<EOF |
423 | Usage: grubby [OPTION...] |
424 | --add-kernel=kernel-path add an entry for the specified kernel |
425 | --args=args default arguments for the new kernel or new arguments for kernel being updated) |
426 | --bad-image-okay don't sanity check images in boot entries (for testing only) |
427 | -c, --config-file=path path to grub config file to update ("-" for stdin) |
428 | --copy-default use the default boot entry as a template for the new entry being added; if the default is not a linux image, or if the kernel referenced by the default image does not exist, the |
429 | first linux entry whose kernel does exist is used as the template |
430 | --default-kernel display the path of the default kernel |
431 | --default-index display the index of the default kernel |
432 | --default-title display the title of the default kernel |
433 | --env=path path for environment data |
434 | --grub2 configure grub2 bootloader |
435 | --info=kernel-path display boot information for specified kernel |
436 | --initrd=initrd-path initrd image for the new kernel |
437 | -i, --extra-initrd=initrd-path auxiliary initrd image for things other than the new kernel |
438 | --make-default make the newly added entry the default boot entry |
439 | -o, --output-file=path path to output updated config file ("-" for stdout) |
440 | --remove-args=STRING remove kernel arguments |
441 | --remove-kernel=kernel-path remove all entries for the specified kernel |
442 | --set-default=kernel-path make the first entry referencing the specified kernel the default |
443 | --set-default-index=entry-index make the given entry index the default entry |
444 | --title=entry-title title to use for the new kernel entry |
445 | --update-kernel=kernel-path updated information for the specified kernel |
446 | --zipl configure zipl bootloader |
447 | -b, --bls-directory path to directory containing the BootLoaderSpec fragment files |
448 | |
449 | Help options: |
450 | -?, --help Show this help message |
451 | |
452 | EOF |
453 | } |
454 | |
455 | OPTS="$(getopt -o c:i:o:b:? --long help,add-kernel:,args:,bad-image-okay,\ |
456 | config-file:,copy-default,default-kernel,default-index,default-title,env:,\ |
457 | grub2,info:,initrd:,extra-initrd:,make-default,output-file:,remove-args:,\ |
458 | remove-kernel:,set-default:,set-default-index:,title:,update-kernel:,zipl,\ |
459 | bls-directory:,add-kernel:,add-multiboot:,mbargs:,mounts:,boot-filesystem:,\ |
460 | bootloader-probe,debug,devtree,devtreedir:,elilo,efi,extlinux,grub,lilo,\ |
461 | output-file:,remove-mbargs:,remove-multiboot:,silo,yaboot -n ${SCRIPTNAME} -- "$@")" |
462 | |
463 | [[ $? = 0 ]] || exit 1 |
464 | |
465 | eval set -- "$OPTS" |
466 | |
467 | while [ ${#} -gt 0 ]; do |
468 | case "$1" in |
469 | --help|-h) |
470 | print_usage |
471 | exit 0 |
472 | ;; |
473 | --add-kernel) |
474 | kernel="${2}" |
475 | shift |
476 | ;; |
477 | --args) |
478 | args="${2}" |
479 | shift |
480 | ;; |
481 | --bad-image-okay) |
482 | bad_image=true |
483 | ;; |
484 | --config-file|-c) |
485 | zipl_config="${2}" |
486 | shift |
487 | ;; |
488 | --copy-default) |
489 | copy_default=true |
490 | ;; |
491 | --default-kernel) |
492 | display_default="kernel" |
493 | ;; |
494 | --default-index) |
495 | display_default="index" |
496 | ;; |
497 | --default-title) |
498 | display_default="title" |
499 | ;; |
500 | --env) |
501 | env="${2}" |
502 | shift |
503 | ;; |
504 | --grub2) |
505 | bootloader="grub2" |
506 | ;; |
507 | --info) |
508 | display_info="${2}" |
509 | shift |
510 | ;; |
511 | --initrd) |
512 | initrd="${2}" |
513 | shift |
514 | ;; |
515 | --extra-initrd|-i) |
516 | extra_initrd=" /${2}" |
517 | shift |
518 | ;; |
519 | --make-default) |
520 | make_default=true |
521 | ;; |
522 | --output-file|-o) |
523 | output_file="${2}" |
524 | shift |
525 | ;; |
526 | --remove-args) |
527 | remove_args="${2}" |
528 | shift |
529 | ;; |
530 | --remove-kernel) |
531 | remove_kernel="${2}" |
532 | shift |
533 | ;; |
534 | --set-default) |
535 | set_default="${2}" |
536 | shift |
537 | ;; |
538 | --set-default-index) |
539 | set_default="${2}" |
540 | shift |
541 | ;; |
542 | --title) |
543 | title="${2}" |
544 | shift |
545 | ;; |
546 | --update-kernel) |
547 | update_kernel="${2}" |
548 | shift |
549 | ;; |
550 | --zipl) |
551 | bootloader="zipl" |
552 | ;; |
553 | --bls-directory|-b) |
554 | blsdir="${2}" |
555 | shift |
556 | ;; |
557 | --add-kernel|--add-multiboot|--mbargs|--mounts|--boot-filesystem|\ |
558 | --bootloader-probe|--debug|--devtree|--devtreedir|--elilo|--efi|\ |
559 | --extlinux|--grub|--lilo|--output-file|--remove-mbargs|--silo|\ |
560 | --remove-multiboot|--slilo|--yaboot) |
561 | echo |
562 | echo "${SCRIPTNAME}: the option \"${1}\" was deprecated" >&2 |
563 | echo "Try '${SCRIPTNAME} --help' to list supported options" >&2 |
564 | echo |
565 | exit 1 |
566 | ;; |
567 | --) |
568 | shift |
569 | break |
570 | ;; |
571 | *) |
572 | echo |
573 | echo "${SCRIPTNAME}: invalid option \"${1}\"" >&2 |
574 | echo "Try '${SCRIPTNAME} --help' for more information" >&2 |
575 | echo |
576 | exit 1 |
577 | ;; |
578 | esac |
579 | shift |
580 | done |
581 | |
582 | if [[ -z $blsdir ]]; then |
583 | blsdir="/boot/loader/entries" |
584 | fi |
585 | |
586 | if [[ -z $env ]]; then |
587 | env="/boot/grub2/grubenv" |
588 | fi |
589 | |
590 | if [[ -z $zipl_config ]]; then |
591 | zipl_config="/etc/zipl.conf" |
592 | fi |
593 | |
594 | get_bls_values |
595 | |
596 | default_index="$(get_default_index)" |
597 | |
598 | if [[ -n $display_default ]]; then |
599 | display_default_value |
600 | fi |
601 | |
602 | if [[ -n $display_info ]]; then |
603 | display_info_values "${display_info}" |
604 | fi |
605 | |
606 | if [[ $bootloader = grub2 ]]; then |
607 | remove_var_prefix |
608 | fi |
609 | |
610 | if [[ -n $kernel ]]; then |
611 | if [[ $copy_default = "true" ]]; then |
612 | opts="${bls_options[$default_index]}" |
613 | if [[ -n $args ]]; then |
614 | opts="${opts} ${args}" |
615 | fi |
616 | else |
617 | opts="${args}" |
618 | fi |
619 | |
620 | add_bls_fragment "${kernel}" "${title}" "${opts}" "${initrd}" \ |
621 | "${extra_initrd}" |
622 | fi |
623 | |
624 | if [[ -n $remove_kernel ]]; then |
625 | remove_bls_fragment "${remove_kernel}" |
626 | fi |
627 | |
628 | if [[ -n $update_kernel ]]; then |
629 | update_bls_fragment "${update_kernel}" "${remove_args}" "${args}" "${initrd}" |
630 | fi |
631 | |
632 | if [[ -n $set_default ]]; then |
633 | set_default_bls "${set_default}" |
634 | fi |
635 | |
636 | exit 0 |
Properties
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svn:executable | * |