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1 | #!/bin/bash | |
2 | # | |
3 | # functions used by dracut and other tools. | |
4 | # | |
5 | # Copyright 2005-2009 Red Hat, Inc. All rights reserved. | |
6 | # | |
7 | # This program is free software; you can redistribute it and/or modify | |
8 | # it under the terms of the GNU General Public License as published by | |
9 | # the Free Software Foundation; either version 2 of the License, or | |
10 | # (at your option) any later version. | |
11 | # | |
12 | # This program is distributed in the hope that it will be useful, | |
13 | # but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | # GNU General Public License for more details. | |
16 | # | |
17 | # You should have received a copy of the GNU General Public License | |
18 | # along with this program. If not, see <http://www.gnu.org/licenses/>. | |
19 | # | |
20 | export LC_MESSAGES=C | |
21 | ||
22 | # is_func <command> | |
23 | # Check whether $1 is a function. | |
24 | is_func() { | |
25 | [[ "$(type -t "$1")" == "function" ]] | |
26 | } | |
27 | ||
28 | # Generic substring function. If $2 is in $1, return 0. | |
29 | strstr() { [[ $1 == *"$2"* ]]; } | |
30 | # Generic glob matching function. If glob pattern $2 matches anywhere in $1, OK | |
31 | strglobin() { [[ $1 == *$2* ]]; } | |
32 | # Generic glob matching function. If glob pattern $2 matches all of $1, OK | |
33 | # shellcheck disable=SC2053 | |
34 | strglob() { [[ $1 == $2 ]]; } | |
35 | # returns OK if $1 contains literal string $2 at the beginning, and isn't empty | |
36 | str_starts() { [ "${1#"$2"*}" != "$1" ]; } | |
37 | # returns OK if $1 contains literal string $2 at the end, and isn't empty | |
38 | str_ends() { [ "${1%*"$2"}" != "$1" ]; } | |
39 | ||
40 | trim() { | |
41 | local var="$*" | |
42 | var="${var#"${var%%[![:space:]]*}"}" # remove leading whitespace characters | |
43 | var="${var%"${var##*[![:space:]]}"}" # remove trailing whitespace characters | |
44 | printf "%s" "$var" | |
45 | } | |
46 | ||
47 | # find a binary. If we were not passed the full path directly, | |
48 | # search in the usual places to find the binary. | |
49 | find_binary() { | |
50 | local _delim | |
51 | local _path | |
52 | local l | |
53 | local p | |
54 | [[ -z ${1##/*} ]] || _delim="/" | |
55 | ||
56 | if [[ $1 == *.so* ]]; then | |
57 | # shellcheck disable=SC2154 | |
58 | for l in $libdirs; do | |
59 | _path="${l}${_delim}${1}" | |
60 | if { $DRACUT_LDD "${dracutsysrootdir}${_path}" &> /dev/null; }; then | |
61 | printf "%s\n" "${_path}" | |
62 | return 0 | |
63 | fi | |
64 | done | |
65 | _path="${_delim}${1}" | |
66 | if { $DRACUT_LDD "${dracutsysrootdir}${_path}" &> /dev/null; }; then | |
67 | printf "%s\n" "${_path}" | |
68 | return 0 | |
69 | fi | |
70 | fi | |
71 | if [[ $1 == */* ]]; then | |
72 | _path="${_delim}${1}" | |
73 | if [[ -L ${dracutsysrootdir}${_path} ]] || [[ -x ${dracutsysrootdir}${_path} ]]; then | |
74 | printf "%s\n" "${_path}" | |
75 | return 0 | |
76 | fi | |
77 | fi | |
78 | for p in $DRACUT_PATH; do | |
79 | _path="${p}${_delim}${1}" | |
80 | if [[ -L ${dracutsysrootdir}${_path} ]] || [[ -x ${dracutsysrootdir}${_path} ]]; then | |
81 | printf "%s\n" "${_path}" | |
82 | return 0 | |
83 | fi | |
84 | done | |
85 | ||
86 | [[ -n $dracutsysrootdir ]] && return 1 | |
87 | type -P "${1##*/}" | |
88 | } | |
89 | ||
90 | ldconfig_paths() { | |
91 | $DRACUT_LDCONFIG ${dracutsysrootdir:+-r ${dracutsysrootdir} -f /etc/ld.so.conf} -pN 2> /dev/null | grep -E -v '/(lib|lib64|usr/lib|usr/lib64)/[^/]*$' | sed -n 's,.* => \(.*\)/.*,\1,p' | sort | uniq | |
92 | } | |
93 | ||
94 | # Version comparision function. Assumes Linux style version scheme. | |
95 | # $1 = version a | |
96 | # $2 = comparision op (gt, ge, eq, le, lt, ne) | |
97 | # $3 = version b | |
98 | vercmp() { | |
99 | local _n1 | |
100 | read -r -a _n1 <<< "${1//./ }" | |
101 | local _op=$2 | |
102 | local _n2 | |
103 | read -r -a _n2 <<< "${3//./ }" | |
104 | local _i _res | |
105 | ||
106 | for ((_i = 0; ; _i++)); do | |
107 | if [[ ! ${_n1[_i]}${_n2[_i]} ]]; then | |
108 | _res=0 | |
109 | elif ((${_n1[_i]:-0} > ${_n2[_i]:-0})); then | |
110 | _res=1 | |
111 | elif ((${_n1[_i]:-0} < ${_n2[_i]:-0})); then | |
112 | _res=2 | |
113 | else | |
114 | continue | |
115 | fi | |
116 | break | |
117 | done | |
118 | ||
119 | case $_op in | |
120 | gt) ((_res == 1)) ;; | |
121 | ge) ((_res != 2)) ;; | |
122 | eq) ((_res == 0)) ;; | |
123 | le) ((_res != 1)) ;; | |
124 | lt) ((_res == 2)) ;; | |
125 | ne) ((_res != 0)) ;; | |
126 | esac | |
127 | } | |
128 | ||
129 | # Create all subdirectories for given path without creating the last element. | |
130 | # $1 = path | |
131 | mksubdirs() { | |
132 | # shellcheck disable=SC2174 | |
133 | [[ -e ${1%/*} ]] || mkdir -m 0755 -p -- "${1%/*}" | |
134 | } | |
135 | ||
136 | # Function prints global variables in format name=value line by line. | |
137 | # $@ = list of global variables' name | |
138 | print_vars() { | |
139 | local _var _value | |
140 | ||
141 | for _var in "$@"; do | |
142 | eval printf -v _value "%s" \""\$$_var"\" | |
143 | [[ ${_value} ]] && printf '%s="%s"\n' "$_var" "$_value" | |
144 | done | |
145 | } | |
146 | ||
147 | # normalize_path <path> | |
148 | # Prints the normalized path, where it removes any duplicated | |
149 | # and trailing slashes. | |
150 | # Example: | |
151 | # $ normalize_path ///test/test// | |
152 | # /test/test | |
153 | normalize_path() { | |
154 | # shellcheck disable=SC2064 | |
155 | trap "$(shopt -p extglob)" RETURN | |
156 | shopt -q -s extglob | |
157 | local p=${1//+(\/)//} | |
158 | printf "%s\n" "${p%/}" | |
159 | } | |
160 | ||
161 | # convert_abs_rel <from> <to> | |
162 | # Prints the relative path, when creating a symlink to <to> from <from>. | |
163 | # Example: | |
164 | # $ convert_abs_rel /usr/bin/test /bin/test-2 | |
165 | # ../../bin/test-2 | |
166 | # $ ln -s $(convert_abs_rel /usr/bin/test /bin/test-2) /usr/bin/test | |
167 | convert_abs_rel() { | |
168 | local __current __absolute __abssize __cursize __newpath | |
169 | local -i __i __level | |
170 | ||
171 | set -- "$(normalize_path "$1")" "$(normalize_path "$2")" | |
172 | ||
173 | # corner case #1 - self looping link | |
174 | [[ $1 == "$2" ]] && { | |
175 | printf "%s\n" "${1##*/}" | |
176 | return | |
177 | } | |
178 | ||
179 | # corner case #2 - own dir link | |
180 | [[ ${1%/*} == "$2" ]] && { | |
181 | printf ".\n" | |
182 | return | |
183 | } | |
184 | ||
185 | IFS=/ read -r -a __current <<< "$1" | |
186 | IFS=/ read -r -a __absolute <<< "$2" | |
187 | ||
188 | __abssize=${#__absolute[@]} | |
189 | __cursize=${#__current[@]} | |
190 | ||
191 | while [[ ${__absolute[__level]} == "${__current[__level]}" ]]; do | |
192 | ((__level++)) | |
193 | if ((__level > __abssize || __level > __cursize)); then | |
194 | break | |
195 | fi | |
196 | done | |
197 | ||
198 | for ((__i = __level; __i < __cursize - 1; __i++)); do | |
199 | if ((__i > __level)); then | |
200 | __newpath=$__newpath"/" | |
201 | fi | |
202 | __newpath=$__newpath".." | |
203 | done | |
204 | ||
205 | for ((__i = __level; __i < __abssize; __i++)); do | |
206 | if [[ -n $__newpath ]]; then | |
207 | __newpath=$__newpath"/" | |
208 | fi | |
209 | __newpath=$__newpath${__absolute[__i]} | |
210 | done | |
211 | ||
212 | printf -- "%s\n" "$__newpath" | |
213 | } | |
214 | ||
215 | # get_fs_env <device> | |
216 | # Get and the ID_FS_TYPE variable from udev for a device. | |
217 | # Example: | |
218 | # $ get_fs_env /dev/sda2 | |
219 | # ext4 | |
220 | get_fs_env() { | |
221 | [[ $1 ]] || return | |
222 | unset ID_FS_TYPE | |
223 | ID_FS_TYPE=$(blkid -u filesystem -o export -- "$1" \ | |
224 | | while read -r line || [ -n "$line" ]; do | |
225 | if [[ $line == "TYPE="* ]]; then | |
226 | printf "%s" "${line#TYPE=}" | |
227 | exit 0 | |
228 | fi | |
229 | done) | |
230 | if [[ $ID_FS_TYPE ]]; then | |
231 | printf "%s" "$ID_FS_TYPE" | |
232 | return 0 | |
233 | fi | |
234 | return 1 | |
235 | } | |
236 | ||
237 | # get_maj_min <device> | |
238 | # Prints the major and minor of a device node. | |
239 | # Example: | |
240 | # $ get_maj_min /dev/sda2 | |
241 | # 8:2 | |
242 | get_maj_min() { | |
243 | local _majmin | |
244 | local _out | |
245 | ||
246 | if [[ $get_maj_min_cache_file ]]; then | |
247 | _out="$(grep -m1 -oE "^$1 \S+$" "$get_maj_min_cache_file" | awk '{print $NF}')" | |
248 | fi | |
249 | ||
250 | if ! [[ "$_out" ]]; then | |
251 | _majmin="$(stat -L -c '%t:%T' "$1" 2> /dev/null)" | |
252 | _out="$(printf "%s" "$((0x${_majmin%:*})):$((0x${_majmin#*:}))")" | |
253 | if [[ $get_maj_min_cache_file ]]; then | |
254 | echo "$1 $_out" >> "$get_maj_min_cache_file" | |
255 | fi | |
256 | fi | |
257 | echo -n "$_out" | |
258 | } | |
259 | ||
260 | # get_devpath_block <device> | |
261 | # get the DEVPATH in /sys of a block device | |
262 | get_devpath_block() { | |
263 | local _majmin _i | |
264 | _majmin=$(get_maj_min "$1") | |
265 | ||
266 | for _i in /sys/block/*/dev /sys/block/*/*/dev; do | |
267 | [[ -e $_i ]] || continue | |
268 | if [[ $_majmin == "$(< "$_i")" ]]; then | |
269 | printf "%s" "${_i%/dev}" | |
270 | return 0 | |
271 | fi | |
272 | done | |
273 | return 1 | |
274 | } | |
275 | ||
276 | # get a persistent path from a device | |
277 | get_persistent_dev() { | |
278 | local i _tmp _dev _pol | |
279 | ||
280 | _dev=$(get_maj_min "$1") | |
281 | [ -z "$_dev" ] && return | |
282 | ||
283 | if [[ -n $persistent_policy ]]; then | |
284 | _pol="/dev/disk/${persistent_policy}/*" | |
285 | else | |
286 | _pol= | |
287 | fi | |
288 | ||
289 | for i in \ | |
290 | $_pol \ | |
291 | /dev/mapper/* \ | |
292 | /dev/disk/by-uuid/* \ | |
293 | /dev/disk/by-label/* \ | |
294 | /dev/disk/by-partuuid/* \ | |
295 | /dev/disk/by-partlabel/* \ | |
296 | /dev/disk/by-id/* \ | |
297 | /dev/disk/by-path/*; do | |
298 | [[ -e $i ]] || continue | |
299 | [[ $i == /dev/mapper/control ]] && continue | |
300 | [[ $i == /dev/mapper/mpath* ]] && continue | |
301 | _tmp=$(get_maj_min "$i") | |
302 | if [ "$_tmp" = "$_dev" ]; then | |
303 | printf -- "%s" "$i" | |
304 | return | |
305 | fi | |
306 | done | |
307 | printf -- "%s" "$1" | |
308 | } | |
309 | ||
310 | expand_persistent_dev() { | |
311 | local _dev=$1 | |
312 | ||
313 | case "$_dev" in | |
314 | LABEL=*) | |
315 | _dev="/dev/disk/by-label/${_dev#LABEL=}" | |
316 | ;; | |
317 | UUID=*) | |
318 | _dev="${_dev#UUID=}" | |
319 | _dev="${_dev,,}" | |
320 | _dev="/dev/disk/by-uuid/${_dev}" | |
321 | ;; | |
322 | PARTUUID=*) | |
323 | _dev="${_dev#PARTUUID=}" | |
324 | _dev="${_dev,,}" | |
325 | _dev="/dev/disk/by-partuuid/${_dev}" | |
326 | ;; | |
327 | PARTLABEL=*) | |
328 | _dev="/dev/disk/by-partlabel/${_dev#PARTLABEL=}" | |
329 | ;; | |
330 | esac | |
331 | printf "%s" "$_dev" | |
332 | } | |
333 | ||
334 | shorten_persistent_dev() { | |
335 | local _dev="$1" | |
336 | case "$_dev" in | |
337 | /dev/disk/by-uuid/*) | |
338 | printf "%s" "UUID=${_dev##*/}" | |
339 | ;; | |
340 | /dev/disk/by-label/*) | |
341 | printf "%s" "LABEL=${_dev##*/}" | |
342 | ;; | |
343 | /dev/disk/by-partuuid/*) | |
344 | printf "%s" "PARTUUID=${_dev##*/}" | |
345 | ;; | |
346 | /dev/disk/by-partlabel/*) | |
347 | printf "%s" "PARTLABEL=${_dev##*/}" | |
348 | ;; | |
349 | *) | |
350 | printf "%s" "$_dev" | |
351 | ;; | |
352 | esac | |
353 | } | |
354 | ||
355 | # find_block_device <mountpoint> | |
356 | # Prints the major and minor number of the block device | |
357 | # for a given mountpoint. | |
358 | # Unless $use_fstab is set to "yes" the functions | |
359 | # uses /proc/self/mountinfo as the primary source of the | |
360 | # information and only falls back to /etc/fstab, if the mountpoint | |
361 | # is not found there. | |
362 | # Example: | |
363 | # $ find_block_device /usr | |
364 | # 8:4 | |
365 | find_block_device() { | |
366 | local _dev _majmin _find_mpt | |
367 | _find_mpt="$1" | |
368 | ||
369 | if [[ $use_fstab != yes ]]; then | |
370 | [[ -d $_find_mpt/. ]] | |
371 | findmnt -e -v -n -o 'MAJ:MIN,SOURCE' --target "$_find_mpt" | { | |
372 | while read -r _majmin _dev || [ -n "$_dev" ]; do | |
373 | if [[ -b $_dev ]]; then | |
374 | if ! [[ $_majmin ]] || [[ $_majmin == 0:* ]]; then | |
375 | _majmin=$(get_maj_min "$_dev") | |
376 | fi | |
377 | if [[ $_majmin ]]; then | |
378 | printf "%s\n" "$_majmin" | |
379 | else | |
380 | printf "%s\n" "$_dev" | |
381 | fi | |
382 | return 0 | |
383 | fi | |
384 | if [[ $_dev == *:* ]]; then | |
385 | printf "%s\n" "$_dev" | |
386 | return 0 | |
387 | fi | |
388 | done | |
389 | return 1 | |
390 | } && return 0 | |
391 | fi | |
392 | # fall back to /etc/fstab | |
393 | [[ ! -f "$dracutsysrootdir"/etc/fstab ]] && return 1 | |
394 | ||
395 | findmnt -e --fstab -v -n -o 'MAJ:MIN,SOURCE' --target "$_find_mpt" | { | |
396 | while read -r _majmin _dev || [ -n "$_dev" ]; do | |
397 | if ! [[ $_dev ]]; then | |
398 | _dev="$_majmin" | |
399 | unset _majmin | |
400 | fi | |
401 | if [[ -b $_dev ]]; then | |
402 | [[ $_majmin ]] || _majmin=$(get_maj_min "$_dev") | |
403 | if [[ $_majmin ]]; then | |
404 | printf "%s\n" "$_majmin" | |
405 | else | |
406 | printf "%s\n" "$_dev" | |
407 | fi | |
408 | return 0 | |
409 | fi | |
410 | if [[ $_dev == *:* ]]; then | |
411 | printf "%s\n" "$_dev" | |
412 | return 0 | |
413 | fi | |
414 | done | |
415 | return 1 | |
416 | } && return 0 | |
417 | ||
418 | return 1 | |
419 | } | |
420 | ||
421 | # find_mp_fstype <mountpoint> | |
422 | # Echo the filesystem type for a given mountpoint. | |
423 | # /proc/self/mountinfo is taken as the primary source of information | |
424 | # and /etc/fstab is used as a fallback. | |
425 | # No newline is appended! | |
426 | # Example: | |
427 | # $ find_mp_fstype /;echo | |
428 | # ext4 | |
429 | find_mp_fstype() { | |
430 | local _fs | |
431 | ||
432 | if [[ $use_fstab != yes ]]; then | |
433 | findmnt -e -v -n -o 'FSTYPE' --target "$1" | { | |
434 | while read -r _fs || [ -n "$_fs" ]; do | |
435 | [[ $_fs ]] || continue | |
436 | [[ $_fs == "autofs" ]] && continue | |
437 | printf "%s" "$_fs" | |
438 | return 0 | |
439 | done | |
440 | return 1 | |
441 | } && return 0 | |
442 | fi | |
443 | ||
444 | [[ ! -f "$dracutsysrootdir"/etc/fstab ]] && return 1 | |
445 | ||
446 | findmnt --fstab -e -v -n -o 'FSTYPE' --target "$1" | { | |
447 | while read -r _fs || [ -n "$_fs" ]; do | |
448 | [[ $_fs ]] || continue | |
449 | [[ $_fs == "autofs" ]] && continue | |
450 | printf "%s" "$_fs" | |
451 | return 0 | |
452 | done | |
453 | return 1 | |
454 | } && return 0 | |
455 | ||
456 | return 1 | |
457 | } | |
458 | ||
459 | # find_dev_fstype <device> | |
460 | # Echo the filesystem type for a given device. | |
461 | # /proc/self/mountinfo is taken as the primary source of information | |
462 | # and /etc/fstab is used as a fallback. | |
463 | # No newline is appended! | |
464 | # Example: | |
465 | # $ find_dev_fstype /dev/sda2;echo | |
466 | # ext4 | |
467 | find_dev_fstype() { | |
468 | local _find_dev _fs | |
469 | _find_dev="$1" | |
470 | if ! [[ $_find_dev == /dev* ]]; then | |
471 | [[ -b "/dev/block/$_find_dev" ]] && _find_dev="/dev/block/$_find_dev" | |
472 | fi | |
473 | ||
474 | if [[ $use_fstab != yes ]]; then | |
475 | findmnt -e -v -n -o 'FSTYPE' --source "$_find_dev" | { | |
476 | while read -r _fs || [ -n "$_fs" ]; do | |
477 | [[ $_fs ]] || continue | |
478 | [[ $_fs == "autofs" ]] && continue | |
479 | printf "%s" "$_fs" | |
480 | return 0 | |
481 | done | |
482 | return 1 | |
483 | } && return 0 | |
484 | fi | |
485 | ||
486 | [[ ! -f "$dracutsysrootdir"/etc/fstab ]] && return 1 | |
487 | ||
488 | findmnt --fstab -e -v -n -o 'FSTYPE' --source "$_find_dev" | { | |
489 | while read -r _fs || [ -n "$_fs" ]; do | |
490 | [[ $_fs ]] || continue | |
491 | [[ $_fs == "autofs" ]] && continue | |
492 | printf "%s" "$_fs" | |
493 | return 0 | |
494 | done | |
495 | return 1 | |
496 | } && return 0 | |
497 | ||
498 | return 1 | |
499 | } | |
500 | ||
501 | # find_mp_fsopts <mountpoint> | |
502 | # Echo the filesystem options for a given mountpoint. | |
503 | # /proc/self/mountinfo is taken as the primary source of information | |
504 | # and /etc/fstab is used as a fallback. | |
505 | # No newline is appended! | |
506 | # Example: | |
507 | # $ find_mp_fsopts /;echo | |
508 | # rw,relatime,discard,data=ordered | |
509 | find_mp_fsopts() { | |
510 | if [[ $use_fstab != yes ]]; then | |
511 | findmnt -e -v -n -o 'OPTIONS' --target "$1" 2> /dev/null && return 0 | |
512 | fi | |
513 | ||
514 | [[ ! -f "$dracutsysrootdir"/etc/fstab ]] && return 1 | |
515 | ||
516 | findmnt --fstab -e -v -n -o 'OPTIONS' --target "$1" | |
517 | } | |
518 | ||
519 | # find_dev_fsopts <device> | |
520 | # Echo the filesystem options for a given device. | |
521 | # /proc/self/mountinfo is taken as the primary source of information | |
522 | # and /etc/fstab is used as a fallback. | |
523 | # if `use_fstab == yes`, then only `/etc/fstab` is used. | |
524 | # | |
525 | # Example: | |
526 | # $ find_dev_fsopts /dev/sda2 | |
527 | # rw,relatime,discard,data=ordered | |
528 | find_dev_fsopts() { | |
529 | local _find_dev | |
530 | _find_dev="$1" | |
531 | if ! [[ $_find_dev == /dev* ]]; then | |
532 | [[ -b "/dev/block/$_find_dev" ]] && _find_dev="/dev/block/$_find_dev" | |
533 | fi | |
534 | ||
535 | if [[ $use_fstab != yes ]]; then | |
536 | findmnt -e -v -n -o 'OPTIONS' --source "$_find_dev" 2> /dev/null && return 0 | |
537 | fi | |
538 | ||
539 | [[ ! -f "$dracutsysrootdir"/etc/fstab ]] && return 1 | |
540 | ||
541 | findmnt --fstab -e -v -n -o 'OPTIONS' --source "$_find_dev" | |
542 | } | |
543 | ||
544 | # finds the major:minor of the block device backing the root filesystem. | |
545 | find_root_block_device() { find_block_device /; } | |
546 | ||
547 | # for_each_host_dev_fs <func> | |
548 | # Execute "<func> <dev> <filesystem>" for every "<dev> <fs>" pair found | |
549 | # in ${host_fs_types[@]} | |
550 | for_each_host_dev_fs() { | |
551 | local _func="$1" | |
552 | local _dev | |
553 | local _ret=1 | |
554 | ||
555 | [[ "${#host_fs_types[@]}" ]] || return 2 | |
556 | ||
557 | for _dev in "${!host_fs_types[@]}"; do | |
558 | $_func "$_dev" "${host_fs_types[$_dev]}" && _ret=0 | |
559 | done | |
560 | return $_ret | |
561 | } | |
562 | ||
563 | host_fs_all() { | |
564 | printf "%s\n" "${host_fs_types[@]}" | |
565 | } | |
566 | ||
567 | # Walk all the slave relationships for a given block device. | |
568 | # Stop when our helper function returns success | |
569 | # $1 = function to call on every found block device | |
570 | # $2 = block device in major:minor format | |
571 | check_block_and_slaves() { | |
572 | local _x | |
573 | [[ -b /dev/block/$2 ]] || return 1 # Not a block device? So sorry. | |
574 | if ! lvm_internal_dev "$2"; then "$1" "$2" && return; fi | |
575 | check_vol_slaves "$@" && return 0 | |
576 | if [[ -f /sys/dev/block/$2/../dev ]] && [[ /sys/dev/block/$2/../subsystem -ef /sys/class/block ]]; then | |
577 | check_block_and_slaves "$1" "$(< "/sys/dev/block/$2/../dev")" && return 0 | |
578 | fi | |
579 | for _x in /sys/dev/block/"$2"/slaves/*; do | |
580 | [[ -f $_x/dev ]] || continue | |
581 | [[ $_x/subsystem -ef /sys/class/block ]] || continue | |
582 | check_block_and_slaves "$1" "$(< "$_x/dev")" && return 0 | |
583 | done | |
584 | return 1 | |
585 | } | |
586 | ||
587 | check_block_and_slaves_all() { | |
588 | local _x _ret=1 | |
589 | [[ -b /dev/block/$2 ]] || return 1 # Not a block device? So sorry. | |
590 | if ! lvm_internal_dev "$2" && "$1" "$2"; then | |
591 | _ret=0 | |
592 | fi | |
593 | check_vol_slaves_all "$@" && return 0 | |
594 | if [[ -f /sys/dev/block/$2/../dev ]] && [[ /sys/dev/block/$2/../subsystem -ef /sys/class/block ]]; then | |
595 | check_block_and_slaves_all "$1" "$(< "/sys/dev/block/$2/../dev")" && _ret=0 | |
596 | fi | |
597 | for _x in /sys/dev/block/"$2"/slaves/*; do | |
598 | [[ -f $_x/dev ]] || continue | |
599 | [[ $_x/subsystem -ef /sys/class/block ]] || continue | |
600 | check_block_and_slaves_all "$1" "$(< "$_x/dev")" && _ret=0 | |
601 | done | |
602 | return $_ret | |
603 | } | |
604 | # for_each_host_dev_and_slaves <func> | |
605 | # Execute "<func> <dev>" for every "<dev>" found | |
606 | # in ${host_devs[@]} and their slaves | |
607 | for_each_host_dev_and_slaves_all() { | |
608 | local _func="$1" | |
609 | local _dev | |
610 | local _ret=1 | |
611 | ||
612 | [[ "${host_devs[*]}" ]] || return 2 | |
613 | ||
614 | for _dev in "${host_devs[@]}"; do | |
615 | [[ -b $_dev ]] || continue | |
616 | if check_block_and_slaves_all "$_func" "$(get_maj_min "$_dev")"; then | |
617 | _ret=0 | |
618 | fi | |
619 | done | |
620 | return $_ret | |
621 | } | |
622 | ||
623 | for_each_host_dev_and_slaves() { | |
624 | local _func="$1" | |
625 | local _dev | |
626 | ||
627 | [[ "${host_devs[*]}" ]] || return 2 | |
628 | ||
629 | for _dev in "${host_devs[@]}"; do | |
630 | [[ -b $_dev ]] || continue | |
631 | check_block_and_slaves "$_func" "$(get_maj_min "$_dev")" && return 0 | |
632 | done | |
633 | return 1 | |
634 | } | |
635 | ||
636 | # /sys/dev/block/major:minor is symbol link to real hardware device | |
637 | # go downstream $(realpath /sys/dev/block/major:minor) to detect driver | |
638 | get_blockdev_drv_through_sys() { | |
639 | local _block_mods="" | |
640 | local _path | |
641 | ||
642 | _path=$(realpath "$1") | |
643 | while true; do | |
644 | if [[ -L "$_path"/driver/module ]]; then | |
645 | _mod=$(realpath "$_path"/driver/module) | |
646 | _mod=$(basename "$_mod") | |
647 | _block_mods="$_block_mods $_mod" | |
648 | fi | |
649 | _path=$(dirname "$_path") | |
650 | if [[ $_path == '/sys/devices' ]] || [[ $_path == '/' ]]; then | |
651 | break | |
652 | fi | |
653 | done | |
654 | echo "$_block_mods" | |
655 | } | |
656 | ||
657 | # ugly workaround for the lvm design | |
658 | # There is no volume group device, | |
659 | # so, there are no slave devices for volume groups. | |
660 | # Logical volumes only have the slave devices they really live on, | |
661 | # but you cannot create the logical volume without the volume group. | |
662 | # And the volume group might be bigger than the devices the LV needs. | |
663 | check_vol_slaves() { | |
664 | local _vg _pv _dm _majmin | |
665 | _majmin="$2" | |
666 | _dm=/sys/dev/block/$_majmin/dm | |
667 | [[ -f $_dm/uuid && $(< "$_dm"/uuid) =~ LVM-* ]] || return 1 | |
668 | _vg=$(dmsetup splitname --noheadings -o vg_name "$(< "$_dm/name")") | |
669 | # strip space | |
670 | _vg="${_vg//[[:space:]]/}" | |
671 | if [[ $_vg ]]; then | |
672 | for _pv in $(lvm vgs --noheadings -o pv_name "$_vg" 2> /dev/null); do | |
673 | check_block_and_slaves "$1" "$(get_maj_min "$_pv")" && return 0 | |
674 | done | |
675 | fi | |
676 | return 1 | |
677 | } | |
678 | ||
679 | check_vol_slaves_all() { | |
680 | local _vg _pv _majmin | |
681 | _majmin="$2" | |
682 | _dm="/sys/dev/block/$_majmin/dm" | |
683 | [[ -f $_dm/uuid && $(< "$_dm"/uuid) =~ LVM-* ]] || return 1 | |
684 | _vg=$(dmsetup splitname --noheadings -o vg_name "$(< "$_dm/name")") | |
685 | # strip space | |
686 | _vg="${_vg//[[:space:]]/}" | |
687 | if [[ $_vg ]]; then | |
688 | # when filter/global_filter is set, lvm may be failed | |
689 | if ! lvm lvs --noheadings -o vg_name "$_vg" 2> /dev/null 1> /dev/null; then | |
690 | return 1 | |
691 | fi | |
692 | ||
693 | for _pv in $(lvm vgs --noheadings -o pv_name "$_vg" 2> /dev/null); do | |
694 | check_block_and_slaves_all "$1" "$(get_maj_min "$_pv")" | |
695 | done | |
696 | return 0 | |
697 | fi | |
698 | return 1 | |
699 | } | |
700 | ||
701 | # fs_get_option <filesystem options> <search for option> | |
702 | # search for a specific option in a bunch of filesystem options | |
703 | # and return the value | |
704 | fs_get_option() { | |
705 | local _fsopts=$1 | |
706 | local _option=$2 | |
707 | local OLDIFS="$IFS" | |
708 | IFS=, | |
709 | # shellcheck disable=SC2086 | |
710 | set -- $_fsopts | |
711 | IFS="$OLDIFS" | |
712 | while [ $# -gt 0 ]; do | |
713 | case $1 in | |
714 | $_option=*) | |
715 | echo "${1#"${_option}"=}" | |
716 | break | |
717 | ;; | |
718 | esac | |
719 | shift | |
720 | done | |
721 | } | |
722 | ||
723 | check_kernel_config() { | |
724 | local _config_opt="$1" | |
725 | local _config_file | |
726 | [[ -f $dracutsysrootdir/boot/config-$kernel ]] \ | |
727 | && _config_file="/boot/config-$kernel" | |
728 | [[ -f $dracutsysrootdir/lib/modules/$kernel/config ]] \ | |
729 | && _config_file="/lib/modules/$kernel/config" | |
730 | ||
731 | # no kernel config file, so return true | |
732 | [[ $_config_file ]] || return 0 | |
733 | ||
734 | grep -q -F "${_config_opt}=" "$dracutsysrootdir$_config_file" && return 0 | |
735 | return 1 | |
736 | } | |
737 | ||
738 | # 0 if the kernel module is either built-in or available | |
739 | # 1 if the kernel module is not enabled | |
740 | check_kernel_module() { | |
741 | modprobe -d "$dracutsysrootdir" -S "$kernel" --dry-run "$1" &> /dev/null || return 1 | |
742 | } | |
743 | ||
744 | # get_cpu_vendor | |
745 | # Only two values are returned: AMD or Intel | |
746 | get_cpu_vendor() { | |
747 | if grep -qE AMD /proc/cpuinfo; then | |
748 | printf "AMD" | |
749 | fi | |
750 | if grep -qE Intel /proc/cpuinfo; then | |
751 | printf "Intel" | |
752 | fi | |
753 | } | |
754 | ||
755 | # get_host_ucode | |
756 | # Get the hosts' ucode file based on the /proc/cpuinfo | |
757 | get_ucode_file() { | |
758 | local family | |
759 | local model | |
760 | local stepping | |
761 | family=$(grep -E "cpu family" /proc/cpuinfo | head -1 | sed "s/.*:\ //") | |
762 | model=$(grep -E "model" /proc/cpuinfo | grep -v name | head -1 | sed "s/.*:\ //") | |
763 | stepping=$(grep -E "stepping" /proc/cpuinfo | head -1 | sed "s/.*:\ //") | |
764 | ||
765 | if [[ "$(get_cpu_vendor)" == "AMD" ]]; then | |
766 | if [[ $family -ge 21 ]]; then | |
767 | printf "microcode_amd_fam%xh.bin" "$family" | |
768 | else | |
769 | printf "microcode_amd.bin" | |
770 | fi | |
771 | fi | |
772 | if [[ "$(get_cpu_vendor)" == "Intel" ]]; then | |
773 | # The /proc/cpuinfo are in decimal. | |
774 | printf "%02x-%02x-%02x" "${family}" "${model}" "${stepping}" | |
775 | fi | |
776 | } | |
777 | ||
778 | # Not every device in /dev/mapper should be examined. | |
779 | # If it is an LVM device, touch only devices which have /dev/VG/LV symlink. | |
780 | lvm_internal_dev() { | |
781 | local dev_dm_dir=/sys/dev/block/$1/dm | |
782 | [[ ! -f $dev_dm_dir/uuid || $(< "$dev_dm_dir"/uuid) != LVM-* ]] && return 1 # Not an LVM device | |
783 | local DM_VG_NAME DM_LV_NAME DM_LV_LAYER | |
784 | eval "$(dmsetup splitname --nameprefixes --noheadings --rows "$(< "$dev_dm_dir"/name)" 2> /dev/null)" | |
785 | [[ ${DM_VG_NAME} ]] && [[ ${DM_LV_NAME} ]] || return 0 # Better skip this! | |
786 | [[ ${DM_LV_LAYER} ]] || [[ ! -L /dev/${DM_VG_NAME}/${DM_LV_NAME} ]] | |
787 | } | |
788 | ||
789 | btrfs_devs() { | |
790 | local _mp="$1" | |
791 | btrfs device usage "$_mp" \ | |
792 | | while read -r _dev _; do | |
793 | str_starts "$_dev" "/" || continue | |
794 | _dev=${_dev%,} | |
795 | printf -- "%s\n" "$_dev" | |
796 | done | |
797 | } | |
798 | ||
799 | zfs_devs() { | |
800 | local _mp="$1" | |
801 | zpool list -H -v -P "${_mp%%/*}" | awk -F$'\t' '$2 ~ /^\// {print $2}' \ | |
802 | | while read -r _dev; do | |
803 | realpath "${_dev}" | |
804 | done | |
805 | } | |
806 | ||
807 | iface_for_remote_addr() { | |
808 | # shellcheck disable=SC2046 | |
809 | set -- $(ip -o route get to "$1") | |
810 | while [ $# -gt 0 ]; do | |
811 | case $1 in | |
812 | dev) | |
813 | echo "$2" | |
814 | return | |
815 | ;; | |
816 | esac | |
817 | shift | |
818 | done | |
819 | } | |
820 | ||
821 | local_addr_for_remote_addr() { | |
822 | # shellcheck disable=SC2046 | |
823 | set -- $(ip -o route get to "$1") | |
824 | while [ $# -gt 0 ]; do | |
825 | case $1 in | |
826 | src) | |
827 | echo "$2" | |
828 | return | |
829 | ;; | |
830 | esac | |
831 | shift | |
832 | done | |
833 | } | |
834 | ||
835 | peer_for_addr() { | |
836 | local addr=$1 | |
837 | local qtd | |
838 | ||
839 | # quote periods in IPv4 address | |
840 | qtd=${addr//./\\.} | |
841 | ip -o addr show \ | |
842 | | sed -n 's%^.* '"$qtd"' peer \([0-9a-f.:]\{1,\}\(/[0-9]*\)\?\).*$%\1%p' | |
843 | } | |
844 | ||
845 | netmask_for_addr() { | |
846 | local addr=$1 | |
847 | local qtd | |
848 | ||
849 | # quote periods in IPv4 address | |
850 | qtd=${addr//./\\.} | |
851 | ip -o addr show | sed -n 's,^.* '"$qtd"'/\([0-9]*\) .*$,\1,p' | |
852 | } | |
853 | ||
854 | gateway_for_iface() { | |
855 | local ifname=$1 addr=$2 | |
856 | ||
857 | case $addr in | |
858 | *.*) proto=4 ;; | |
859 | *:*) proto=6 ;; | |
860 | *) return ;; | |
861 | esac | |
862 | ip -o -$proto route show \ | |
863 | | sed -n "s/^default via \([0-9a-z.:]\{1,\}\) dev $ifname .*\$/\1/p" | |
864 | } | |
865 | ||
866 | # This works only for ifcfg-style network configuration! | |
867 | bootproto_for_iface() { | |
868 | local ifname=$1 | |
869 | local dir | |
870 | ||
871 | # follow ifcfg settings for boot protocol | |
872 | for dir in network-scripts network; do | |
873 | [ -f "/etc/sysconfig/$dir/ifcfg-$ifname" ] && { | |
874 | sed -n "s/BOOTPROTO=[\"']\?\([[:alnum:]]\{1,\}\)[\"']\?.*\$/\1/p" \ | |
875 | "/etc/sysconfig/$dir/ifcfg-$ifname" | |
876 | return | |
877 | } | |
878 | done | |
879 | } | |
880 | ||
881 | is_unbracketed_ipv6_address() { | |
882 | strglob "$1" '*:*' && ! strglob "$1" '\[*:*\]' | |
883 | } | |
884 | ||
885 | # Create an ip= string to set up networking such that the given | |
886 | # remote address can be reached | |
887 | ip_params_for_remote_addr() { | |
888 | local remote_addr=$1 | |
889 | local ifname local_addr peer netmask gateway ifmac | |
890 | ||
891 | [[ $remote_addr ]] || return 1 | |
892 | ifname=$(iface_for_remote_addr "$remote_addr") | |
893 | [[ $ifname ]] || { | |
894 | berror "failed to determine interface to connect to $remote_addr" | |
895 | return 1 | |
896 | } | |
897 | ||
898 | # ifname clause to bind the interface name to a MAC address | |
899 | if [ -d "/sys/class/net/$ifname/bonding" ]; then | |
900 | dinfo "Found bonded interface '${ifname}'. Make sure to provide an appropriate 'bond=' cmdline." | |
901 | elif [ -e "/sys/class/net/$ifname/address" ]; then | |
902 | ifmac=$(cat "/sys/class/net/$ifname/address") | |
903 | [[ $ifmac ]] && printf 'ifname=%s:%s ' "${ifname}" "${ifmac}" | |
904 | fi | |
905 | ||
906 | bootproto=$(bootproto_for_iface "$ifname") | |
907 | case $bootproto in | |
908 | dhcp | dhcp6 | auto6) ;; | |
909 | dhcp4) | |
910 | bootproto=dhcp | |
911 | ;; | |
912 | static* | "") | |
913 | bootproto= | |
914 | ;; | |
915 | *) | |
916 | derror "bootproto \"$bootproto\" is unsupported by dracut, trying static configuration" | |
917 | bootproto= | |
918 | ;; | |
919 | esac | |
920 | if [[ $bootproto ]]; then | |
921 | printf 'ip=%s:%s ' "${ifname}" "${bootproto}" | |
922 | else | |
923 | local_addr=$(local_addr_for_remote_addr "$remote_addr") | |
924 | [[ $local_addr ]] || { | |
925 | berror "failed to determine local address to connect to $remote_addr" | |
926 | return 1 | |
927 | } | |
928 | peer=$(peer_for_addr "$local_addr") | |
929 | # Set peer or netmask, but not both | |
930 | [[ $peer ]] || netmask=$(netmask_for_addr "$local_addr") | |
931 | gateway=$(gateway_for_iface "$ifname" "$local_addr") | |
932 | # Quote IPv6 addresses with brackets | |
933 | is_unbracketed_ipv6_address "$local_addr" && local_addr="[$local_addr]" | |
934 | is_unbracketed_ipv6_address "$peer" && peer="[$peer]" | |
935 | is_unbracketed_ipv6_address "$gateway" && gateway="[$gateway]" | |
936 | printf 'ip=%s:%s:%s:%s::%s:none ' \ | |
937 | "${local_addr}" "${peer}" "${gateway}" "${netmask}" "${ifname}" | |
938 | fi | |
939 | ||
940 | } | |
941 | ||
942 | # block_is_nbd <maj:min> | |
943 | # Check whether $1 is an nbd device | |
944 | block_is_nbd() { | |
945 | [[ -b /dev/block/$1 && $1 == 43:* ]] | |
946 | } | |
947 | ||
948 | # block_is_iscsi <maj:min> | |
949 | # Check whether $1 is an iSCSI device | |
950 | block_is_iscsi() { | |
951 | local _dir | |
952 | local _dev=$1 | |
953 | [[ -L "/sys/dev/block/$_dev" ]] || return | |
954 | _dir="$(readlink -f "/sys/dev/block/$_dev")" || return | |
955 | until [[ -d "$_dir/sys" || -d "$_dir/iscsi_session" ]]; do | |
956 | _dir="$_dir/.." | |
957 | done | |
958 | [[ -d "$_dir/iscsi_session" ]] | |
959 | } | |
960 | ||
961 | # block_is_fcoe <maj:min> | |
962 | # Check whether $1 is an FCoE device | |
963 | # Will not work for HBAs that hide the ethernet aspect | |
964 | # completely and present a pure FC device | |
965 | block_is_fcoe() { | |
966 | local _dir | |
967 | local _dev=$1 | |
968 | [[ -L "/sys/dev/block/$_dev" ]] || return | |
969 | _dir="$(readlink -f "/sys/dev/block/$_dev")" | |
970 | until [[ -d "$_dir/sys" ]]; do | |
971 | _dir="$_dir/.." | |
972 | if [[ -d "$_dir/subsystem" ]]; then | |
973 | subsystem=$(basename "$(readlink "$_dir"/subsystem)") | |
974 | [[ $subsystem == "fcoe" ]] && return 0 | |
975 | fi | |
976 | done | |
977 | return 1 | |
978 | } | |
979 | ||
980 | # block_is_netdevice <maj:min> | |
981 | # Check whether $1 is a net device | |
982 | block_is_netdevice() { | |
983 | block_is_nbd "$1" || block_is_iscsi "$1" || block_is_fcoe "$1" | |
984 | } | |
985 | ||
986 | # convert the driver name given by udevadm to the corresponding kernel module name | |
987 | get_module_name() { | |
988 | local dev_driver | |
989 | while read -r dev_driver; do | |
990 | case "$dev_driver" in | |
991 | mmcblk) | |
992 | echo "mmc_block" | |
993 | ;; | |
994 | *) | |
995 | echo "$dev_driver" | |
996 | ;; | |
997 | esac | |
998 | done | |
999 | } | |
1000 | ||
1001 | # get the corresponding kernel modules of a /sys/class/*/* or/dev/* device | |
1002 | get_dev_module() { | |
1003 | local dev_attr_walk | |
1004 | local dev_drivers | |
1005 | local dev_paths | |
1006 | dev_attr_walk=$(udevadm info -a "$1") | |
1007 | dev_drivers=$(echo "$dev_attr_walk" \ | |
1008 | | sed -n 's/\s*DRIVERS=="\(\S\+\)"/\1/p' \ | |
1009 | | get_module_name) | |
1010 | ||
1011 | # also return modalias info from sysfs paths parsed by udevadm | |
1012 | dev_paths=$(echo "$dev_attr_walk" | sed -n 's/.*\(\/devices\/.*\)'\'':/\1/p') | |
1013 | local dev_path | |
1014 | for dev_path in $dev_paths; do | |
1015 | local modalias_file="/sys$dev_path/modalias" | |
1016 | if [ -e "$modalias_file" ]; then | |
1017 | dev_drivers="$(printf "%s\n%s" "$dev_drivers" "$(cat "$modalias_file")")" | |
1018 | fi | |
1019 | done | |
1020 | ||
1021 | # if no kernel modules found and device is in a virtual subsystem, follow symlinks | |
1022 | if [[ -z $dev_drivers && $(udevadm info -q path "$1") == "/devices/virtual"* ]]; then | |
1023 | local dev_vkernel | |
1024 | local dev_vsubsystem | |
1025 | local dev_vpath | |
1026 | dev_vkernel=$(echo "$dev_attr_walk" | sed -n 's/\s*KERNELS=="\(\S\+\)"/\1/p' | tail -1) | |
1027 | dev_vsubsystem=$(echo "$dev_attr_walk" | sed -n 's/\s*SUBSYSTEMS=="\(\S\+\)"/\1/p' | tail -1) | |
1028 | dev_vpath="/sys/devices/virtual/$dev_vsubsystem/$dev_vkernel" | |
1029 | if [[ -n $dev_vkernel && -n $dev_vsubsystem && -d $dev_vpath ]]; then | |
1030 | local dev_links | |
1031 | local dev_link | |
1032 | dev_links=$(find "$dev_vpath" -maxdepth 1 -type l ! -name "subsystem" -exec readlink {} \;) | |
1033 | for dev_link in $dev_links; do | |
1034 | [[ -n $dev_drivers && ${dev_drivers: -1} != $'\n' ]] && dev_drivers+=$'\n' | |
1035 | dev_drivers+=$(udevadm info -a "$dev_vpath/$dev_link" \ | |
1036 | | sed -n 's/\s*DRIVERS=="\(\S\+\)"/\1/p' \ | |
1037 | | get_module_name \ | |
1038 | | grep -v -e pcieport) | |
1039 | done | |
1040 | fi | |
1041 | fi | |
1042 | echo "$dev_drivers" | |
1043 | } | |
1044 | ||
1045 | # Check if file is in PE format | |
1046 | pe_file_format() { | |
1047 | if [[ $# -eq 1 ]]; then | |
1048 | local magic | |
1049 | magic=$(objdump -p "$1" \ | |
1050 | | awk '{if ($1 == "Magic"){print strtonum("0x"$2)}}') | |
1051 | magic=$(printf "0x%x" "$magic") | |
1052 | # 0x10b (PE32), 0x20b (PE32+) | |
1053 | [[ $magic == 0x20b || $magic == 0x10b ]] && return 0 | |
1054 | fi | |
1055 | return 1 | |
1056 | } | |
1057 | ||
1058 | # Get specific data from the PE header | |
1059 | pe_get_header_data() { | |
1060 | local data_header | |
1061 | [[ $# -ne "2" ]] && return 1 | |
1062 | [[ $(pe_file_format "$1") -eq 1 ]] && return 1 | |
1063 | data_header=$(objdump -p "$1" \ | |
1064 | | awk -v data="$2" '{if ($1 == data){print $2}}') | |
1065 | echo "$data_header" | |
1066 | } | |
1067 | ||
1068 | # Get the SectionAlignment data from the PE header | |
1069 | pe_get_section_align() { | |
1070 | local align_hex | |
1071 | [[ $# -ne "1" ]] && return 1 | |
1072 | align_hex=$(pe_get_header_data "$1" "SectionAlignment") | |
1073 | [[ $? -eq 1 ]] && return 1 | |
1074 | echo "$((16#$align_hex))" | |
1075 | } | |
1076 | ||
1077 | # Get the ImageBase data from the PE header | |
1078 | pe_get_image_base() { | |
1079 | local base_image | |
1080 | [[ $# -ne "1" ]] && return 1 | |
1081 | base_image=$(pe_get_header_data "$1" "ImageBase") | |
1082 | [[ $? -eq 1 ]] && return 1 | |
1083 | echo "$((16#$base_image))" | |
1084 | } |