dracut-functions.sh

   1 #!/bin/bash
   2 # -*- mode: shell-script; indent-tabs-mode: nil; sh-basic-offset: 4; -*-
   3 # ex: ts=8 sw=4 sts=4 et filetype=sh
   4 #
   5 # functions used by dracut and other tools.
   6 #
   7 # Copyright 2005-2009 Red Hat, Inc.  All rights reserved.
   8 #
   9 # This program is free software; you can redistribute it and/or modify
  10 # it under the terms of the GNU General Public License as published by
  11 # the Free Software Foundation; either version 2 of the License, or
  12 # (at your option) any later version.
  13 #
  14 # This program is distributed in the hope that it will be useful,
  15 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  16 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17 # GNU General Public License for more details.
  18 #
  19 # You should have received a copy of the GNU General Public License
  20 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  21 #
  22 export LC_MESSAGES=C
  23
  24 if [[ $DRACUT_KERNEL_LAZY ]] && ! [[ $DRACUT_KERNEL_LAZY_HASHDIR ]]; then
  25     if ! [[ -d "$initdir/.kernelmodseen" ]]; then
  26         mkdir -p "$initdir/.kernelmodseen"
  27     fi
  28     DRACUT_KERNEL_LAZY_HASHDIR="$initdir/.kernelmodseen"
  29 fi
  30
  31 if [[ $initdir ]] && ! [[ -d $initdir ]]; then
  32     mkdir -p "$initdir"
  33 fi
  34
  35 # Generic substring function.  If $2 is in $1, return 0.
  36 strstr() { [[ $1 = *"$2"* ]]; }
  37 # Generic glob matching function. If glob pattern $2 matches anywhere in $1, OK
  38 strglobin() { [[ $1 = *$2* ]]; }
  39 # Generic glob matching function. If glob pattern $2 matches all of $1, OK
  40 strglob() { [[ $1 = $2 ]]; }
  41
  42 # helper function for check() in module-setup.sh
  43 # to check for required installed binaries
  44 # issues a standardized warning message
  45 require_binaries() {
  46     local _module_name="${moddir##*/}"
  47     local _ret=0
  48
  49     if [[ "$1" = "-m" ]]; then
  50         _module_name="$2"
  51         shift 2
  52     fi
  53
  54     for cmd in "$@"; do
  55         if ! find_binary "$cmd" &>/dev/null; then
  56             dinfo "dracut module '${_module_name#[0-9][0-9]}' will not be installed, because command '$cmd' could not be found!"
  57             ((_ret++))
  58         fi
  59     done
  60     return $_ret
  61 }
  62
  63 require_any_binary() {
  64     local _module_name="${moddir##*/}"
  65     local _ret=1
  66
  67     if [[ "$1" = "-m" ]]; then
  68         _module_name="$2"
  69         shift 2
  70     fi
  71
  72     for cmd in "$@"; do
  73         if find_binary "$cmd" &>/dev/null; then
  74             _ret=0
  75             break
  76         fi
  77     done
  78
  79     if (( $_ret != 0 )); then
  80         dinfo "$_module_name: Could not find any command of '$@'!"
  81         return 1
  82     fi
  83
  84     return 0
  85 }
  86
  87 # find a binary.  If we were not passed the full path directly,
  88 # search in the usual places to find the binary.
  89 find_binary() {
  90     if [[ -z ${1##/*} ]]; then
  91         if [[ -x $1 ]] || { [[ "$1" == *.so* ]] && ldd "$1" &>/dev/null; };  then
  92             printf "%s\n" "$1"
  93             return 0
  94         fi
  95     fi
  96
  97     type -P "${1##*/}"
  98 }
  99
 100 if ! [[ $dracutbasedir ]]; then
 101     dracutbasedir=${BASH_SOURCE[0]%/*}
 102     [[ $dracutbasedir = "dracut-functions" ]] && dracutbasedir="."
 103     [[ $dracutbasedir ]] || dracutbasedir="."
 104     dracutbasedir="$(readlink -f $dracutbasedir)"
 105 fi
 106
 107 ldconfig_paths()
 108 {
 109     local a i
 110     declare -A a
 111     for i in $(
 112         ldconfig -pN 2>/dev/null | grep -F '=>' | grep -E -v '/(lib|lib64|usr/lib|usr/lib64)/[^/]*$' | while read a b c d; do
 113             d=${d%/*}
 114             printf "%s\n" "$d";
 115         done
 116     ); do
 117         a["$i"]=1;
 118     done;
 119     printf "%s\n" ${!a[@]}
 120 }
 121
 122 # Detect lib paths
 123 if ! [[ $libdirs ]] ; then
 124     if [[ "$(ldd /bin/sh)" == */lib64/* ]] &>/dev/null \
 125         && [[ -d /lib64 ]]; then
 126         libdirs+=" /lib64"
 127         [[ -d /usr/lib64 ]] && libdirs+=" /usr/lib64"
 128     else
 129         libdirs+=" /lib"
 130         [[ -d /usr/lib ]] && libdirs+=" /usr/lib"
 131     fi
 132
 133     libdirs+=" $(ldconfig_paths)"
 134
 135     export libdirs
 136 fi
 137
 138 if ! [[ $kernel ]]; then
 139     kernel=$(uname -r)
 140     export kernel
 141 fi
 142
 143 # Version comparision function.  Assumes Linux style version scheme.
 144 # $1 = version a
 145 # $2 = comparision op (gt, ge, eq, le, lt, ne)
 146 # $3 = version b
 147 vercmp() {
 148     local _n1=(${1//./ }) _op=$2 _n2=(${3//./ }) _i _res
 149
 150     for ((_i=0; ; _i++))
 151     do
 152         if [[ ! ${_n1[_i]}${_n2[_i]} ]]; then _res=0
 153         elif ((${_n1[_i]:-0} > ${_n2[_i]:-0})); then _res=1
 154         elif ((${_n1[_i]:-0} < ${_n2[_i]:-0})); then _res=2
 155         else continue
 156         fi
 157         break
 158     done
 159
 160     case $_op in
 161         gt) ((_res == 1));;
 162         ge) ((_res != 2));;
 163         eq) ((_res == 0));;
 164         le) ((_res != 1));;
 165         lt) ((_res == 2));;
 166         ne) ((_res != 0));;
 167     esac
 168 }
 169
 170 srcmods="/lib/modules/$kernel/"
 171
 172 [[ $drivers_dir ]] && {
 173     if ! command -v kmod &>/dev/null && vercmp "$(modprobe --version | cut -d' ' -f3)" lt 3.7; then
 174         dfatal 'To use --kmoddir option module-init-tools >= 3.7 is required.'
 175         exit 1
 176     fi
 177     srcmods="$drivers_dir"
 178 }
 179 export srcmods
 180
 181 if ! type dinfo >/dev/null 2>&1; then
 182     . "$dracutbasedir/dracut-logger.sh"
 183     dlog_init
 184 fi
 185
 186 if ! [[ $initdir ]]; then
 187     dfatal "initdir not set"
 188     exit 1
 189 fi
 190
 191 # export standard hookdirs
 192 [[ $hookdirs ]] || {
 193     hookdirs="cmdline pre-udev pre-trigger netroot "
 194     hookdirs+="initqueue initqueue/settled initqueue/online initqueue/finished initqueue/timeout "
 195     hookdirs+="pre-mount pre-pivot cleanup mount "
 196     hookdirs+="emergency shutdown-emergency pre-shutdown shutdown "
 197     export hookdirs
 198 }
 199
 200 dracut_need_initqueue() {
 201     >"$initdir/lib/dracut/need-initqueue"
 202 }
 203
 204 dracut_module_included() {
 205     [[ " $mods_to_load $modules_loaded " == *\ $*\ * ]]
 206 }
 207
 208 # Create all subdirectories for given path without creating the last element.
 209 # $1 = path
 210 mksubdirs() {
 211     [[ -e ${1%/*} ]] || mkdir -m 0755 -p -- "${1%/*}"
 212 }
 213
 214 # is_func <command>
 215 # Check whether $1 is a function.
 216 is_func() {
 217     [[ "$(type -t "$1")" = "function" ]]
 218 }
 219
 220 # Function prints global variables in format name=value line by line.
 221 # $@ = list of global variables' name
 222 print_vars() {
 223     local _var _value
 224
 225     for _var in "$@"
 226     do
 227         eval printf -v _value "%s" \""\$$_var"\"
 228         [[ ${_value} ]] && printf '%s="%s"\n' "$_var" "$_value"
 229     done
 230 }
 231
 232 # normalize_path <path>
 233 # Prints the normalized path, where it removes any duplicated
 234 # and trailing slashes.
 235 # Example:
 236 # $ normalize_path ///test/test//
 237 # /test/test
 238 normalize_path() {
 239     shopt -q -s extglob
 240     set -- "${1//+(\/)//}"
 241     shopt -q -u extglob
 242     printf "%s\n" "${1%/}"
 243 }
 244
 245 # convert_abs_rel <from> <to>
 246 # Prints the relative path, when creating a symlink to <to> from <from>.
 247 # Example:
 248 # $ convert_abs_rel /usr/bin/test /bin/test-2
 249 # ../../bin/test-2
 250 # $ ln -s $(convert_abs_rel /usr/bin/test /bin/test-2) /usr/bin/test
 251 convert_abs_rel() {
 252     local __current __absolute __abssize __cursize __newpath
 253     local -i __i __level
 254
 255     set -- "$(normalize_path "$1")" "$(normalize_path "$2")"
 256
 257     # corner case #1 - self looping link
 258     [[ "$1" == "$2" ]] && { printf "%s\n" "${1##*/}"; return; }
 259
 260     # corner case #2 - own dir link
 261     [[ "${1%/*}" == "$2" ]] && { printf ".\n"; return; }
 262
 263     IFS="/" __current=($1)
 264     IFS="/" __absolute=($2)
 265
 266     __abssize=${#__absolute[@]}
 267     __cursize=${#__current[@]}
 268
 269     while [[ "${__absolute[__level]}" == "${__current[__level]}" ]]
 270     do
 271         (( __level++ ))
 272         if (( __level > __abssize || __level > __cursize ))
 273         then
 274             break
 275         fi
 276     done
 277
 278     for ((__i = __level; __i < __cursize-1; __i++))
 279     do
 280         if ((__i > __level))
 281         then
 282             __newpath=$__newpath"/"
 283         fi
 284         __newpath=$__newpath".."
 285     done
 286
 287     for ((__i = __level; __i < __abssize; __i++))
 288     do
 289         if [[ -n $__newpath ]]
 290         then
 291             __newpath=$__newpath"/"
 292         fi
 293         __newpath=$__newpath${__absolute[__i]}
 294     done
 295
 296     printf "%s\n" "$__newpath"
 297 }
 298
 299 if [[ "$(ln --help)" == *--relative* ]]; then
 300     ln_r() {
 301         ln -sfnr "${initdir}/$1" "${initdir}/$2"
 302     }
 303 else
 304     ln_r() {
 305         local _source=$1
 306         local _dest=$2
 307         [[ -d "${_dest%/*}" ]] && _dest=$(readlink -f "${_dest%/*}")/${_dest##*/}
 308         ln -sfn -- "$(convert_abs_rel "${_dest}" "${_source}")" "${initdir}/${_dest}"
 309     }
 310 fi
 311
 312 # get_fs_env <device>
 313 # Get and the ID_FS_TYPE variable from udev for a device.
 314 # Example:
 315 # $ get_fs_env /dev/sda2
 316 # ext4
 317 get_fs_env() {
 318     local evalstr
 319     local found
 320
 321     [[ $1 ]] || return
 322     unset ID_FS_TYPE
 323     ID_FS_TYPE=$(blkid -u filesystem -o export -- "$1" \
 324         | while read line; do
 325             if [[ "$line" == TYPE\=* ]]; then
 326                 printf "%s" "${line#TYPE=}";
 327                 exit 0;
 328             fi
 329             done)
 330     if [[ $ID_FS_TYPE ]]; then
 331         printf "%s" "$ID_FS_TYPE"
 332         return 0
 333     fi
 334     return 1
 335 }
 336
 337 # get_maj_min <device>
 338 # Prints the major and minor of a device node.
 339 # Example:
 340 # $ get_maj_min /dev/sda2
 341 # 8:2
 342 get_maj_min() {
 343     local _maj _min _majmin
 344     _majmin="$(stat -L -c '%t:%T' "$1" 2>/dev/null)"
 345     printf "%s" "$((0x${_majmin%:*})):$((0x${_majmin#*:}))"
 346 }
 347
 348
 349 # get_devpath_block <device>
 350 # get the DEVPATH in /sys of a block device
 351 get_devpath_block() {
 352     local _majmin _i
 353     _majmin=$(get_maj_min "$1")
 354
 355     for _i in /sys/block/*/dev /sys/block/*/*/dev; do
 356         [[ -e "$_i" ]] || continue
 357         if [[ "$_majmin" == "$(<"$_i")" ]]; then
 358             printf "%s" "${_i%/dev}"
 359             return 0
 360         fi
 361     done
 362     return 1
 363 }
 364
 365 # get a persistent path from a device
 366 get_persistent_dev() {
 367     local i _tmp _dev
 368
 369     _dev=$(get_maj_min "$1")
 370     [ -z "$_dev" ] && return
 371
 372     for i in \
 373         /dev/mapper/* \
 374         /dev/disk/${persistent_policy:-by-uuid}/* \
 375         /dev/disk/by-uuid/* \
 376         /dev/disk/by-label/* \
 377         /dev/disk/by-partuuid/* \
 378         /dev/disk/by-partlabel/* \
 379         /dev/disk/by-id/* \
 380         /dev/disk/by-path/* \
 381         ; do
 382         [[ -e "$i" ]] || continue
 383         [[ $i == /dev/mapper/control ]] && continue
 384         [[ $i == /dev/mapper/mpath* ]] && continue
 385         _tmp=$(get_maj_min "$i")
 386         if [ "$_tmp" = "$_dev" ]; then
 387             printf -- "%s" "$i"
 388             return
 389         fi
 390     done
 391     printf -- "%s" "$1"
 392 }
 393
 394 expand_persistent_dev() {
 395     local _dev=$1
 396
 397     case "$_dev" in
 398         LABEL=*)
 399             _dev="/dev/disk/by-label/${_dev#LABEL=}"
 400             ;;
 401         UUID=*)
 402             _dev="${_dev#UUID=}"
 403             _dev="${_dev,,}"
 404             _dev="/dev/disk/by-uuid/${_dev}"
 405             ;;
 406         PARTUUID=*)
 407             _dev="${_dev#PARTUUID=}"
 408             _dev="${_dev,,}"
 409             _dev="/dev/disk/by-partuuid/${_dev}"
 410             ;;
 411         PARTLABEL=*)
 412             _dev="/dev/disk/by-partlabel/${_dev#PARTLABEL=}"
 413             ;;
 414     esac
 415     printf "%s" "$_dev"
 416 }
 417
 418 shorten_persistent_dev() {
 419     local _dev="$1"
 420     case "$_dev" in
 421         /dev/disk/by-uuid/*)
 422             printf "%s" "UUID=${_dev##*/}";;
 423         /dev/disk/by-label/*)
 424             printf "%s" "LABEL=${_dev##*/}";;
 425         /dev/disk/by-partuuid/*)
 426             printf "%s" "PARTUUID=${_dev##*/}";;
 427         /dev/disk/by-partlabel/*)
 428             printf "%s" "PARTLABEL=${_dev##*/}";;
 429         *)
 430             printf "%s" "$_dev";;
 431     esac
 432 }
 433
 434 # find_block_device <mountpoint>
 435 # Prints the major and minor number of the block device
 436 # for a given mountpoint.
 437 # Unless $use_fstab is set to "yes" the functions
 438 # uses /proc/self/mountinfo as the primary source of the
 439 # information and only falls back to /etc/fstab, if the mountpoint
 440 # is not found there.
 441 # Example:
 442 # $ find_block_device /usr
 443 # 8:4
 444 find_block_device() {
 445     local _majmin _dev _majmin _find_mpt
 446     _find_mpt="$1"
 447     if [[ $use_fstab != yes ]]; then
 448         [[ -d $_find_mpt/. ]]
 449         findmnt -e -v -n -o 'MAJ:MIN,SOURCE' --target "$_find_mpt" | { \
 450             while read _majmin _dev; do
 451                 if [[ -b $_dev ]]; then
 452                     if ! [[ $_majmin ]] || [[ $_majmin == 0:* ]]; then
 453                         _majmin=$(get_maj_min $_dev)
 454                     fi
 455                     if [[ $_majmin ]]; then
 456                         printf "%s\n" "$_majmin"
 457                     else
 458                         printf "%s\n" "$_dev"
 459                     fi
 460                     return 0
 461                 fi
 462                 if [[ $_dev = *:* ]]; then
 463                     printf "%s\n" "$_dev"
 464                     return 0
 465                 fi
 466             done; return 1; } && return 0
 467     fi
 468     # fall back to /etc/fstab
 469
 470     findmnt -e --fstab -v -n -o 'MAJ:MIN,SOURCE' --target "$_find_mpt" | { \
 471         while read _majmin _dev; do
 472             if ! [[ $_dev ]]; then
 473                 _dev="$_majmin"
 474                 unset _majmin
 475             fi
 476             if [[ -b $_dev ]]; then
 477                 [[ $_majmin ]] || _majmin=$(get_maj_min $_dev)
 478                 if [[ $_majmin ]]; then
 479                     printf "%s\n" "$_majmin"
 480                 else
 481                     printf "%s\n" "$_dev"
 482                 fi
 483                 return 0
 484             fi
 485             if [[ $_dev = *:* ]]; then
 486                 printf "%s\n" "$_dev"
 487                 return 0
 488             fi
 489         done; return 1; } && return 0
 490
 491     return 1
 492 }
 493
 494 # find_mp_fstype <mountpoint>
 495 # Echo the filesystem type for a given mountpoint.
 496 # /proc/self/mountinfo is taken as the primary source of information
 497 # and /etc/fstab is used as a fallback.
 498 # No newline is appended!
 499 # Example:
 500 # $ find_mp_fstype /;echo
 501 # ext4
 502 find_mp_fstype() {
 503     local _fs
 504
 505     if [[ $use_fstab != yes ]]; then
 506         findmnt -e -v -n -o 'FSTYPE' --target "$1" | { \
 507             while read _fs; do
 508                 [[ $_fs ]] || continue
 509                 [[ $_fs = "autofs" ]] && continue
 510                 printf "%s" "$_fs"
 511                 return 0
 512             done; return 1; } && return 0
 513     fi
 514
 515     findmnt --fstab -e -v -n -o 'FSTYPE' --target "$1" | { \
 516         while read _fs; do
 517             [[ $_fs ]] || continue
 518             [[ $_fs = "autofs" ]] && continue
 519             printf "%s" "$_fs"
 520             return 0
 521         done; return 1; } && return 0
 522
 523     return 1
 524 }
 525
 526 # find_dev_fstype <device>
 527 # Echo the filesystem type for a given device.
 528 # /proc/self/mountinfo is taken as the primary source of information
 529 # and /etc/fstab is used as a fallback.
 530 # No newline is appended!
 531 # Example:
 532 # $ find_dev_fstype /dev/sda2;echo
 533 # ext4
 534 find_dev_fstype() {
 535     local _find_dev _fs
 536     _find_dev="$1"
 537     if ! [[ "$_find_dev" = /dev* ]]; then
 538         [[ -b "/dev/block/$_find_dev" ]] && _find_dev="/dev/block/$_find_dev"
 539     fi
 540
 541     if [[ $use_fstab != yes ]]; then
 542         findmnt -e -v -n -o 'FSTYPE' --source "$_find_dev" | { \
 543             while read _fs; do
 544                 [[ $_fs ]] || continue
 545                 [[ $_fs = "autofs" ]] && continue
 546                 printf "%s" "$_fs"
 547                 return 0
 548             done; return 1; } && return 0
 549     fi
 550
 551     findmnt --fstab -e -v -n -o 'FSTYPE' --source "$_find_dev" | { \
 552         while read _fs; do
 553             [[ $_fs ]] || continue
 554             [[ $_fs = "autofs" ]] && continue
 555             printf "%s" "$_fs"
 556             return 0
 557         done; return 1; } && return 0
 558
 559     return 1
 560 }
 561
 562 # find_mp_fsopts <mountpoint>
 563 # Echo the filesystem options for a given mountpoint.
 564 # /proc/self/mountinfo is taken as the primary source of information
 565 # and /etc/fstab is used as a fallback.
 566 # No newline is appended!
 567 # Example:
 568 # $ find_mp_fsopts /;echo
 569 # rw,relatime,discard,data=ordered
 570 find_mp_fsopts() {
 571     if [[ $use_fstab != yes ]]; then
 572         findmnt -e -v -n -o 'OPTIONS' --target "$1" 2>/dev/null && return 0
 573     fi
 574
 575     findmnt --fstab -e -v -n -o 'OPTIONS' --target "$1"
 576 }
 577
 578 # find_dev_fsopts <device>
 579 # Echo the filesystem options for a given device.
 580 # /proc/self/mountinfo is taken as the primary source of information
 581 # and /etc/fstab is used as a fallback.
 582 # Example:
 583 # $ find_dev_fsopts /dev/sda2
 584 # rw,relatime,discard,data=ordered
 585 find_dev_fsopts() {
 586     local _find_dev _opts
 587     _find_dev="$1"
 588     if ! [[ "$_find_dev" = /dev* ]]; then
 589         [[ -b "/dev/block/$_find_dev" ]] && _find_dev="/dev/block/$_find_dev"
 590     fi
 591
 592     if [[ $use_fstab != yes ]]; then
 593         findmnt -e -v -n -o 'OPTIONS' --source "$_find_dev" 2>/dev/null && return 0
 594     fi
 595
 596     findmnt --fstab -e -v -n -o 'OPTIONS' --source "$_find_dev"
 597 }
 598
 599
 600 # finds the major:minor of the block device backing the root filesystem.
 601 find_root_block_device() { find_block_device /; }
 602
 603 # for_each_host_dev_fs <func>
 604 # Execute "<func> <dev> <filesystem>" for every "<dev> <fs>" pair found
 605 # in ${host_fs_types[@]}
 606 for_each_host_dev_fs()
 607 {
 608     local _func="$1"
 609     local _dev
 610     local _ret=1
 611
 612     [[ "${!host_fs_types[@]}" ]] || return 0
 613
 614     for _dev in "${!host_fs_types[@]}"; do
 615         $_func "$_dev" "${host_fs_types[$_dev]}" && _ret=0
 616     done
 617     return $_ret
 618 }
 619
 620 host_fs_all()
 621 {
 622     printf "%s\n" "${host_fs_types[@]}"
 623 }
 624
 625 # Walk all the slave relationships for a given block device.
 626 # Stop when our helper function returns success
 627 # $1 = function to call on every found block device
 628 # $2 = block device in major:minor format
 629 check_block_and_slaves() {
 630     local _x
 631     [[ -b /dev/block/$2 ]] || return 1 # Not a block device? So sorry.
 632     if ! lvm_internal_dev $2; then "$1" $2 && return; fi
 633     check_vol_slaves "$@" && return 0
 634     if [[ -f /sys/dev/block/$2/../dev ]]; then
 635         check_block_and_slaves $1 $(<"/sys/dev/block/$2/../dev") && return 0
 636     fi
 637     [[ -d /sys/dev/block/$2/slaves ]] || return 1
 638     for _x in /sys/dev/block/$2/slaves/*/dev; do
 639         [[ -f $_x ]] || continue
 640         check_block_and_slaves $1 $(<"$_x") && return 0
 641     done
 642     return 1
 643 }
 644
 645 check_block_and_slaves_all() {
 646     local _x _ret=1
 647     [[ -b /dev/block/$2 ]] || return 1 # Not a block device? So sorry.
 648     if ! lvm_internal_dev $2 && "$1" $2; then
 649         _ret=0
 650     fi
 651     check_vol_slaves "$@" && return 0
 652     if [[ -f /sys/dev/block/$2/../dev ]]; then
 653         check_block_and_slaves_all $1 $(<"/sys/dev/block/$2/../dev") && _ret=0
 654     fi
 655     [[ -d /sys/dev/block/$2/slaves ]] || return 1
 656     for _x in /sys/dev/block/$2/slaves/*/dev; do
 657         [[ -f $_x ]] || continue
 658         check_block_and_slaves_all $1 $(<"$_x") && _ret=0
 659     done
 660     return $_ret
 661 }
 662 # for_each_host_dev_and_slaves <func>
 663 # Execute "<func> <dev>" for every "<dev>" found
 664 # in ${host_devs[@]} and their slaves
 665 for_each_host_dev_and_slaves_all()
 666 {
 667     local _func="$1"
 668     local _dev
 669     local _ret=1
 670
 671     [[ "${host_devs[@]}" ]] || return 0
 672
 673     for _dev in ${host_devs[@]}; do
 674         [[ -b "$_dev" ]] || continue
 675         if check_block_and_slaves_all $_func $(get_maj_min $_dev); then
 676             _ret=0
 677         fi
 678     done
 679     return $_ret
 680 }
 681
 682 for_each_host_dev_and_slaves()
 683 {
 684     local _func="$1"
 685     local _dev
 686
 687     [[ "${host_devs[@]}" ]] || return 0
 688
 689     for _dev in ${host_devs[@]}; do
 690         [[ -b "$_dev" ]] || continue
 691         check_block_and_slaves $_func $(get_maj_min $_dev) && return 0
 692     done
 693     return 1
 694 }
 695
 696 # ugly workaround for the lvm design
 697 # There is no volume group device,
 698 # so, there are no slave devices for volume groups.
 699 # Logical volumes only have the slave devices they really live on,
 700 # but you cannot create the logical volume without the volume group.
 701 # And the volume group might be bigger than the devices the LV needs.
 702 check_vol_slaves() {
 703     local _lv _vg _pv
 704     for i in /dev/mapper/*; do
 705         [[ $i == /dev/mapper/control ]] && continue
 706         _lv=$(get_maj_min $i)
 707         if [[ $_lv = $2 ]]; then
 708             _vg=$(lvm lvs --noheadings -o vg_name $i 2>/dev/null)
 709             # strip space
 710             _vg=$(printf "%s\n" "$_vg")
 711             if [[ $_vg ]]; then
 712                 for _pv in $(lvm vgs --noheadings -o pv_name "$_vg" 2>/dev/null)
 713                 do
 714                     check_block_and_slaves $1 $(get_maj_min $_pv) && return 0
 715                 done
 716             fi
 717         fi
 718     done
 719     return 1
 720 }
 721
 722 # fs_get_option <filesystem options> <search for option>
 723 # search for a specific option in a bunch of filesystem options
 724 # and return the value
 725 fs_get_option() {
 726     local _fsopts=$1
 727     local _option=$2
 728     local OLDIFS="$IFS"
 729     IFS=,
 730     set -- $_fsopts
 731     IFS="$OLDIFS"
 732     while [ $# -gt 0 ]; do
 733         case $1 in
 734             $_option=*)
 735                 echo ${1#${_option}=}
 736                 break
 737         esac
 738         shift
 739     done
 740 }
 741
 742
 743 if ! [[ $DRACUT_INSTALL ]]; then
 744     DRACUT_INSTALL=$(find_binary dracut-install)
 745 fi
 746
 747 if ! [[ $DRACUT_INSTALL ]] && [[ -x $dracutbasedir/dracut-install ]]; then
 748     DRACUT_INSTALL=$dracutbasedir/dracut-install
 749 fi
 750
 751 if ! [[ -x $DRACUT_INSTALL ]]; then
 752     dfatal "dracut-install not found!"
 753     exit 10
 754 fi
 755
 756 [[ $DRACUT_RESOLVE_LAZY ]] || export DRACUT_RESOLVE_DEPS=1
 757 inst_dir() {
 758     [[ -e ${initdir}/"$1" ]] && return 0  # already there
 759     $DRACUT_INSTALL ${initdir:+-D "$initdir"} -d "$@"
 760     (($? != 0)) && derror $DRACUT_INSTALL ${initdir:+-D "$initdir"} -d "$@" || :
 761 }
 762
 763 inst() {
 764     local _hostonly_install
 765     if [[ "$1" == "-H" ]]; then
 766         _hostonly_install="-H"
 767         shift
 768     fi
 769     [[ -e ${initdir}/"${2:-$1}" ]] && return 0  # already there
 770     $DRACUT_INSTALL ${initdir:+-D "$initdir"} ${DRACUT_RESOLVE_DEPS:+-l} ${DRACUT_FIPS_MODE:+-f} ${_hostonly_install:+-H} "$@"
 771     (($? != 0)) && derror $DRACUT_INSTALL ${initdir:+-D "$initdir"} ${DRACUT_RESOLVE_DEPS:+-l} ${DRACUT_FIPS_MODE:+-f} ${_hostonly_install:+-H} "$@" || :
 772 }
 773
 774 inst_simple() {
 775     local _hostonly_install
 776     if [[ "$1" == "-H" ]]; then
 777         _hostonly_install="-H"
 778         shift
 779     fi
 780     [[ -e ${initdir}/"${2:-$1}" ]] && return 0  # already there
 781     [[ -e $1 ]] || return 1  # no source
 782     $DRACUT_INSTALL ${initdir:+-D "$initdir"} ${_hostonly_install:+-H} "$@"
 783     (($? != 0)) && derror $DRACUT_INSTALL ${initdir:+-D "$initdir"} ${_hostonly_install:+-H} "$@" || :
 784 }
 785
 786 inst_symlink() {
 787     local _hostonly_install
 788     if [[ "$1" == "-H" ]]; then
 789         _hostonly_install="-H"
 790         shift
 791     fi
 792     [[ -e ${initdir}/"${2:-$1}" ]] && return 0  # already there
 793     [[ -L $1 ]] || return 1
 794     $DRACUT_INSTALL ${initdir:+-D "$initdir"} ${DRACUT_RESOLVE_DEPS:+-l}  ${DRACUT_FIPS_MODE:+-f} ${_hostonly_install:+-H} "$@"
 795     (($? != 0)) && derror $DRACUT_INSTALL ${initdir:+-D "$initdir"} ${DRACUT_RESOLVE_DEPS:+-l}  ${DRACUT_FIPS_MODE:+-f} ${_hostonly_install:+-H} "$@" || :
 796 }
 797
 798 inst_multiple() {
 799     local _ret
 800     $DRACUT_INSTALL ${initdir:+-D "$initdir"} -a ${DRACUT_RESOLVE_DEPS:+-l}  ${DRACUT_FIPS_MODE:+-f} "$@"
 801     _ret=$?
 802     (($_ret != 0)) && derror $DRACUT_INSTALL ${initdir:+-D "$initdir"} -a ${DRACUT_RESOLVE_DEPS:+-l}  ${DRACUT_FIPS_MODE:+-f} ${_hostonly_install:+-H} "$@" || :
 803     return $_ret
 804 }
 805
 806 dracut_install() {
 807     inst_multiple "$@"
 808 }
 809
 810 inst_library() {
 811     local _hostonly_install
 812     if [[ "$1" == "-H" ]]; then
 813         _hostonly_install="-H"
 814         shift
 815     fi
 816     [[ -e ${initdir}/"${2:-$1}" ]] && return 0  # already there
 817     [[ -e $1 ]] || return 1  # no source
 818     $DRACUT_INSTALL ${initdir:+-D "$initdir"} ${DRACUT_RESOLVE_DEPS:+-l}  ${DRACUT_FIPS_MODE:+-f} ${_hostonly_install:+-H} "$@"
 819     (($? != 0)) && derror $DRACUT_INSTALL ${initdir:+-D "$initdir"} ${DRACUT_RESOLVE_DEPS:+-l}  ${DRACUT_FIPS_MODE:+-f} ${_hostonly_install:+-H} "$@" || :
 820 }
 821
 822 inst_binary() {
 823     $DRACUT_INSTALL ${initdir:+-D "$initdir"} ${DRACUT_RESOLVE_DEPS:+-l}  ${DRACUT_FIPS_MODE:+-f} "$@"
 824     (($? != 0)) && derror $DRACUT_INSTALL ${initdir:+-D "$initdir"} ${DRACUT_RESOLVE_DEPS:+-l}  ${DRACUT_FIPS_MODE:+-f} "$@" || :
 825 }
 826
 827 inst_script() {
 828     $DRACUT_INSTALL ${initdir:+-D "$initdir"} ${DRACUT_RESOLVE_DEPS:+-l}  ${DRACUT_FIPS_MODE:+-f} "$@"
 829     (($? != 0)) && derror $DRACUT_INSTALL ${initdir:+-D "$initdir"} ${DRACUT_RESOLVE_DEPS:+-l}  ${DRACUT_FIPS_MODE:+-f} "$@" || :
 830 }
 831
 832 mark_hostonly() {
 833     for i in "$@"; do
 834         echo "$i" >> "$initdir/lib/dracut/hostonly-files"
 835     done
 836 }
 837
 838 # find symlinks linked to given library file
 839 # $1 = library file
 840 # Function searches for symlinks by stripping version numbers appended to
 841 # library filename, checks if it points to the same target and finally
 842 # prints the list of symlinks to stdout.
 843 #
 844 # Example:
 845 # rev_lib_symlinks libfoo.so.8.1
 846 # output: libfoo.so.8 libfoo.so
 847 # (Only if libfoo.so.8 and libfoo.so exists on host system.)
 848 rev_lib_symlinks() {
 849     [[ ! $1 ]] && return 0
 850
 851     local fn="$1" orig="$(readlink -f "$1")" links=''
 852
 853     [[ ${fn} == *.so.* ]] || return 1
 854
 855     until [[ ${fn##*.} == so ]]; do
 856         fn="${fn%.*}"
 857         [[ -L ${fn} && $(readlink -f "${fn}") == ${orig} ]] && links+=" ${fn}"
 858     done
 859
 860     echo "${links}"
 861 }
 862
 863 # attempt to install any programs specified in a udev rule
 864 inst_rule_programs() {
 865     local _prog _bin
 866
 867     if grep -qE 'PROGRAM==?"[^ "]+' "$1"; then
 868         for _prog in $(grep -E 'PROGRAM==?"[^ "]+' "$1" | sed -r 's/.*PROGRAM==?"([^ "]+).*/\1/'); do
 869             _bin=""
 870             if [ -x ${udevdir}/$_prog ]; then
 871                 _bin=${udevdir}/$_prog
 872             elif [[ "${_prog/\$env\{/}" == "$_prog" ]]; then
 873                 _bin=$(find_binary "$_prog") || {
 874                     dinfo "Skipping program $_prog using in udev rule ${1##*/} as it cannot be found"
 875                     continue;
 876                 }
 877             fi
 878
 879             [[ $_bin ]] && inst_binary "$_bin"
 880         done
 881     fi
 882     if grep -qE 'RUN[+=]=?"[^ "]+' "$1"; then
 883         for _prog in $(grep -E 'RUN[+=]=?"[^ "]+' "$1" | sed -r 's/.*RUN[+=]=?"([^ "]+).*/\1/'); do
 884             _bin=""
 885             if [ -x ${udevdir}/$_prog ]; then
 886                 _bin=${udevdir}/$_prog
 887             elif [[ "${_prog/\$env\{/}" == "$_prog" ]] && [[ "${_prog}" != "/sbin/initqueue" ]]; then
 888                 _bin=$(find_binary "$_prog") || {
 889                     dinfo "Skipping program $_prog using in udev rule ${1##*/} as it cannot be found"
 890                     continue;
 891                 }
 892             fi
 893
 894             [[ $_bin ]] && inst_binary "$_bin"
 895         done
 896     fi
 897     if grep -qE 'IMPORT\{program\}==?"[^ "]+' "$1"; then
 898         for _prog in $(grep -E 'IMPORT\{program\}==?"[^ "]+' "$1" | sed -r 's/.*IMPORT\{program\}==?"([^ "]+).*/\1/'); do
 899             _bin=""
 900             if [ -x ${udevdir}/$_prog ]; then
 901                 _bin=${udevdir}/$_prog
 902             elif [[ "${_prog/\$env\{/}" == "$_prog" ]]; then
 903                 _bin=$(find_binary "$_prog") || {
 904                     dinfo "Skipping program $_prog using in udev rule ${1##*/} as it cannot be found"
 905                     continue;
 906                 }
 907             fi
 908
 909             [[ $_bin ]] && dracut_install "$_bin"
 910         done
 911     fi
 912 }
 913
 914 # attempt to install any programs specified in a udev rule
 915 inst_rule_group_owner() {
 916     local i
 917
 918     if grep -qE 'OWNER=?"[^ "]+' "$1"; then
 919         for i in $(grep -E 'OWNER=?"[^ "]+' "$1" | sed -r 's/.*OWNER=?"([^ "]+).*/\1/'); do
 920             if ! egrep -q "^$i:" "$initdir/etc/passwd" 2>/dev/null; then
 921                 egrep "^$i:" /etc/passwd 2>/dev/null >> "$initdir/etc/passwd"
 922             fi
 923         done
 924     fi
 925     if grep -qE 'GROUP=?"[^ "]+' "$1"; then
 926         for i in $(grep -E 'GROUP=?"[^ "]+' "$1" | sed -r 's/.*GROUP=?"([^ "]+).*/\1/'); do
 927             if ! egrep -q "^$i:" "$initdir/etc/group" 2>/dev/null; then
 928                 egrep "^$i:" /etc/group 2>/dev/null >> "$initdir/etc/group"
 929             fi
 930         done
 931     fi
 932 }
 933
 934 inst_rule_initqueue() {
 935     if grep -q -F initqueue "$1"; then
 936         dracut_need_initqueue
 937     fi
 938 }
 939
 940 # udev rules always get installed in the same place, so
 941 # create a function to install them to make life simpler.
 942 inst_rules() {
 943     local _target=/etc/udev/rules.d _rule _found
 944
 945     inst_dir "${udevdir}/rules.d"
 946     inst_dir "$_target"
 947     for _rule in "$@"; do
 948         if [ "${_rule#/}" = "$_rule" ]; then
 949             for r in ${udevdir}/rules.d ${hostonly:+/etc/udev/rules.d}; do
 950                 if [[ -e $r/$_rule ]]; then
 951                     _found="$r/$_rule"
 952                     inst_rule_programs "$_found"
 953                     inst_rule_group_owner "$_found"
 954                     inst_rule_initqueue "$_found"
 955                     inst_simple "$_found"
 956                 fi
 957             done
 958         fi
 959         for r in '' $dracutbasedir/rules.d/; do
 960             # skip rules without an absolute path
 961             [[ "${r}$_rule" != /* ]] && continue
 962
 963             if [[ -f ${r}$_rule ]]; then
 964                 _found="${r}$_rule"
 965                 inst_rule_programs "$_found"
 966                 inst_rule_group_owner "$_found"
 967                 inst_rule_initqueue "$_found"
 968                 inst_simple "$_found" "$_target/${_found##*/}"
 969             fi
 970         done
 971         [[ $_found ]] || dinfo "Skipping udev rule: $_rule"
 972     done
 973 }
 974
 975 inst_rules_wildcard() {
 976     local _target=/etc/udev/rules.d _rule _found
 977
 978     inst_dir "${udevdir}/rules.d"
 979     inst_dir "$_target"
 980     for _rule in ${udevdir}/rules.d/$1 ${dracutbasedir}/rules.d/$1 ; do
 981         if [[ -e $_rule ]]; then
 982             inst_rule_programs "$_rule"
 983             inst_rule_group_owner "$_rule"
 984             inst_rule_initqueue "$_rule"
 985             inst_simple "$_rule"
 986             _found=$_rule
 987         fi
 988     done
 989     if [ -n ${hostonly} ] ; then
 990         for _rule in ${_target}/$1 ; do
 991             if [[ -f $_rule ]]; then
 992                 inst_rule_programs "$_rule"
 993                 inst_rule_group_owner "$_rule"
 994                 inst_rule_initqueue "$_rule"
 995                 inst_simple "$_rule"
 996                 _found=$_rule
 997             fi
 998         done
 999     fi
1000     [[ $_found ]] || dinfo "Skipping udev rule: $_rule"
1001 }
1002
1003 prepare_udev_rules() {
1004     [ -z "$UDEVVERSION" ] && export UDEVVERSION=$(udevadm --version)
1005
1006     for f in "$@"; do
1007         f="${initdir}/etc/udev/rules.d/$f"
1008         [ -e "$f" ] || continue
1009         while read line; do
1010             if [ "${line%%IMPORT PATH_ID}" != "$line" ]; then
1011                 if [ $UDEVVERSION -ge 174 ]; then
1012                     printf '%sIMPORT{builtin}="path_id"\n' "${line%%IMPORT PATH_ID}"
1013                 else
1014                     printf '%sIMPORT{program}="path_id %%p"\n' "${line%%IMPORT PATH_ID}"
1015                 fi
1016             elif [ "${line%%IMPORT BLKID}" != "$line" ]; then
1017                 if [ $UDEVVERSION -ge 176 ]; then
1018                     printf '%sIMPORT{builtin}="blkid"\n' "${line%%IMPORT BLKID}"
1019                 else
1020                     printf '%sIMPORT{program}="/sbin/blkid -o udev -p $tempnode"\n' "${line%%IMPORT BLKID}"
1021                 fi
1022             else
1023                 echo "$line"
1024             fi
1025         done < "${f}" > "${f}.new"
1026         mv "${f}.new" "$f"
1027     done
1028 }
1029
1030 # install function specialized for hooks
1031 # $1 = type of hook, $2 = hook priority (lower runs first), $3 = hook
1032 # All hooks should be POSIX/SuS compliant, they will be sourced by init.
1033 inst_hook() {
1034     if ! [[ -f $3 ]]; then
1035         dfatal "Cannot install a hook ($3) that does not exist."
1036         dfatal "Aborting initrd creation."
1037         exit 1
1038     elif ! [[ "$hookdirs" == *$1* ]]; then
1039         dfatal "No such hook type $1. Aborting initrd creation."
1040         exit 1
1041     fi
1042     inst_simple "$3" "/lib/dracut/hooks/${1}/${2}-${3##*/}"
1043 }
1044
1045 # install any of listed files
1046 #
1047 # If first argument is '-d' and second some destination path, first accessible
1048 # source is installed into this path, otherwise it will installed in the same
1049 # path as source.  If none of listed files was installed, function return 1.
1050 # On first successful installation it returns with 0 status.
1051 #
1052 # Example:
1053 #
1054 # inst_any -d /bin/foo /bin/bar /bin/baz
1055 #
1056 # Lets assume that /bin/baz exists, so it will be installed as /bin/foo in
1057 # initramfs.
1058 inst_any() {
1059     local to f
1060
1061     [[ $1 = '-d' ]] && to="$2" && shift 2
1062
1063     for f in "$@"; do
1064         if [[ -e $f ]]; then
1065             [[ $to ]] && inst "$f" "$to" && return 0
1066             inst "$f" && return 0
1067         fi
1068     done
1069
1070     return 1
1071 }
1072
1073
1074 # inst_libdir_file [-n <pattern>] <file> [<file>...]
1075 # Install a <file> located on a lib directory to the initramfs image
1076 # -n <pattern> install matching files
1077 inst_libdir_file() {
1078     local _files
1079     if [[ "$1" == "-n" ]]; then
1080         local _pattern=$2
1081         shift 2
1082         for _dir in $libdirs; do
1083             for _i in "$@"; do
1084                 for _f in "$_dir"/$_i; do
1085                     [[ "$_f" =~ $_pattern ]] || continue
1086                     [[ -e "$_f" ]] && _files+="$_f "
1087                 done
1088             done
1089         done
1090     else
1091         for _dir in $libdirs; do
1092             for _i in "$@"; do
1093                 for _f in "$_dir"/$_i; do
1094                     [[ -e "$_f" ]] && _files+="$_f "
1095                 done
1096             done
1097         done
1098     fi
1099     [[ $_files ]] && inst_multiple $_files
1100 }
1101
1102
1103 # install function decompressing the target and handling symlinks
1104 # $@ = list of compressed (gz or bz2) files or symlinks pointing to such files
1105 #
1106 # Function install targets in the same paths inside overlay but decompressed
1107 # and without extensions (.gz, .bz2).
1108 inst_decompress() {
1109     local _src _cmd
1110
1111     for _src in $@
1112     do
1113         case ${_src} in
1114             *.gz) _cmd='gzip -f -d' ;;
1115             *.bz2) _cmd='bzip2 -d' ;;
1116             *) return 1 ;;
1117         esac
1118         inst_simple ${_src}
1119         # Decompress with chosen tool.  We assume that tool changes name e.g.
1120         # from 'name.gz' to 'name'.
1121         ${_cmd} "${initdir}${_src}"
1122     done
1123 }
1124
1125 # It's similar to above, but if file is not compressed, performs standard
1126 # install.
1127 # $@ = list of files
1128 inst_opt_decompress() {
1129     local _src
1130
1131     for _src in $@
1132     do
1133         inst_decompress "${_src}" || inst "${_src}"
1134     done
1135 }
1136
1137 # module_check <dracut module>
1138 # execute the check() function of module-setup.sh of <dracut module>
1139 # or the "check" script, if module-setup.sh is not found
1140 # "check $hostonly" is called
1141 module_check() {
1142     local _moddir=$(echo ${dracutbasedir}/modules.d/??${1})
1143     local _ret
1144     local _forced=0
1145     local _hostonly=$hostonly
1146     [ $# -eq 2 ] && _forced=$2
1147     [[ -d $_moddir ]] || return 1
1148     if [[ ! -f $_moddir/module-setup.sh ]]; then
1149         # if we do not have a check script, we are unconditionally included
1150         [[ -x $_moddir/check ]] || return 0
1151         [ $_forced -ne 0 ] && unset hostonly
1152         $_moddir/check $hostonly
1153         _ret=$?
1154     else
1155         unset check depends cmdline install installkernel
1156         check() { true; }
1157         . $_moddir/module-setup.sh
1158         is_func check || return 0
1159         [ $_forced -ne 0 ] && unset hostonly
1160         moddir=$_moddir check $hostonly
1161         _ret=$?
1162         unset check depends cmdline install installkernel
1163     fi
1164     hostonly=$_hostonly
1165     return $_ret
1166 }
1167
1168 # module_check_mount <dracut module>
1169 # execute the check() function of module-setup.sh of <dracut module>
1170 # or the "check" script, if module-setup.sh is not found
1171 # "mount_needs=1 check 0" is called
1172 module_check_mount() {
1173     local _moddir=$(echo ${dracutbasedir}/modules.d/??${1})
1174     local _ret
1175     mount_needs=1
1176     [[ -d $_moddir ]] || return 1
1177     if [[ ! -f $_moddir/module-setup.sh ]]; then
1178         # if we do not have a check script, we are unconditionally included
1179         [[ -x $_moddir/check ]] || return 0
1180         mount_needs=1 $_moddir/check 0
1181         _ret=$?
1182     else
1183         unset check depends cmdline install installkernel
1184         check() { false; }
1185         . $_moddir/module-setup.sh
1186         moddir=$_moddir check 0
1187         _ret=$?
1188         unset check depends cmdline install installkernel
1189     fi
1190     unset mount_needs
1191     return $_ret
1192 }
1193
1194 # module_depends <dracut module>
1195 # execute the depends() function of module-setup.sh of <dracut module>
1196 # or the "depends" script, if module-setup.sh is not found
1197 module_depends() {
1198     local _moddir=$(echo ${dracutbasedir}/modules.d/??${1})
1199     local _ret
1200     [[ -d $_moddir ]] || return 1
1201     if [[ ! -f $_moddir/module-setup.sh ]]; then
1202         # if we do not have a check script, we have no deps
1203         [[ -x $_moddir/check ]] || return 0
1204         $_moddir/check -d
1205         return $?
1206     else
1207         unset check depends cmdline install installkernel
1208         depends() { true; }
1209         . $_moddir/module-setup.sh
1210         moddir=$_moddir depends
1211         _ret=$?
1212         unset check depends cmdline install installkernel
1213         return $_ret
1214     fi
1215 }
1216
1217 # module_cmdline <dracut module>
1218 # execute the cmdline() function of module-setup.sh of <dracut module>
1219 # or the "cmdline" script, if module-setup.sh is not found
1220 module_cmdline() {
1221     local _moddir=$(echo ${dracutbasedir}/modules.d/??${1})
1222     local _ret
1223     [[ -d $_moddir ]] || return 1
1224     if [[ ! -f $_moddir/module-setup.sh ]]; then
1225         [[ -x $_moddir/cmdline ]] && . "$_moddir/cmdline"
1226         return $?
1227     else
1228         unset check depends cmdline install installkernel
1229         cmdline() { true; }
1230         . $_moddir/module-setup.sh
1231         moddir=$_moddir cmdline
1232         _ret=$?
1233         unset check depends cmdline install installkernel
1234         return $_ret
1235     fi
1236 }
1237
1238 # module_install <dracut module>
1239 # execute the install() function of module-setup.sh of <dracut module>
1240 # or the "install" script, if module-setup.sh is not found
1241 module_install() {
1242     local _moddir=$(echo ${dracutbasedir}/modules.d/??${1})
1243     local _ret
1244     [[ -d $_moddir ]] || return 1
1245     if [[ ! -f $_moddir/module-setup.sh ]]; then
1246         [[ -x $_moddir/install ]] && . "$_moddir/install"
1247         return $?
1248     else
1249         unset check depends cmdline install installkernel
1250         install() { true; }
1251         . $_moddir/module-setup.sh
1252         moddir=$_moddir install
1253         _ret=$?
1254         unset check depends cmdline install installkernel
1255         return $_ret
1256     fi
1257 }
1258
1259 # module_installkernel <dracut module>
1260 # execute the installkernel() function of module-setup.sh of <dracut module>
1261 # or the "installkernel" script, if module-setup.sh is not found
1262 module_installkernel() {
1263     local _moddir=$(echo ${dracutbasedir}/modules.d/??${1})
1264     local _ret
1265     [[ -d $_moddir ]] || return 1
1266     if [[ ! -f $_moddir/module-setup.sh ]]; then
1267         [[ -x $_moddir/installkernel ]] && . "$_moddir/installkernel"
1268         return $?
1269     else
1270         unset check depends cmdline install installkernel
1271         installkernel() { true; }
1272         . $_moddir/module-setup.sh
1273         moddir=$_moddir installkernel
1274         _ret=$?
1275         unset check depends cmdline install installkernel
1276         return $_ret
1277     fi
1278 }
1279
1280 # check_mount <dracut module>
1281 # check_mount checks, if a dracut module is needed for the given
1282 # device and filesystem types in "${host_fs_types[@]}"
1283 check_mount() {
1284     local _mod=$1
1285     local _moddir=$(echo ${dracutbasedir}/modules.d/??${1})
1286     local _ret
1287     local _moddep
1288
1289     [ "${#host_fs_types[*]}" -le 0 ] && return 1
1290
1291     # If we are already scheduled to be loaded, no need to check again.
1292     [[ " $mods_to_load " == *\ $_mod\ * ]] && return 0
1293     [[ " $mods_checked_as_dep " == *\ $_mod\ * ]] && return 1
1294
1295     # This should never happen, but...
1296     [[ -d $_moddir ]] || return 1
1297
1298     [[ $2 ]] || mods_checked_as_dep+=" $_mod "
1299
1300     if [[ " $omit_dracutmodules " == *\ $_mod\ * ]]; then
1301         return 1
1302     fi
1303
1304     if [[ " $dracutmodules $add_dracutmodules $force_add_dracutmodules" == *\ $_mod\ * ]]; then
1305         module_check_mount $_mod; ret=$?
1306
1307         # explicit module, so also accept ret=255
1308         [[ $ret = 0 || $ret = 255 ]] || return 1
1309     else
1310         # module not in our list
1311         if [[ $dracutmodules = all ]]; then
1312             # check, if we can and should install this module
1313             module_check_mount $_mod || return 1
1314         else
1315             # skip this module
1316             return 1
1317         fi
1318     fi
1319
1320
1321     for _moddep in $(module_depends $_mod); do
1322         # handle deps as if they were manually added
1323         [[ " $add_dracutmodules " == *\ $_moddep\ * ]] || \
1324             add_dracutmodules+=" $_moddep "
1325         [[ " $force_add_dracutmodules " == *\ $_moddep\ * ]] || \
1326             force_add_dracutmodules+=" $_moddep "
1327         # if a module we depend on fail, fail also
1328         if ! check_module $_moddep; then
1329             derror "dracut module '$_mod' depends on '$_moddep', which can't be installed"
1330             return 1
1331         fi
1332     done
1333
1334     [[ " $mods_to_load " == *\ $_mod\ * ]] || \
1335         mods_to_load+=" $_mod "
1336
1337     return 0
1338 }
1339
1340 # check_module <dracut module> [<use_as_dep>]
1341 # check if a dracut module is to be used in the initramfs process
1342 # if <use_as_dep> is set, then the process also keeps track
1343 # that the modules were checked for the dependency tracking process
1344 check_module() {
1345     local _mod=$1
1346     local _moddir=$(echo ${dracutbasedir}/modules.d/??${1})
1347     local _ret
1348     local _moddep
1349     # If we are already scheduled to be loaded, no need to check again.
1350     [[ " $mods_to_load " == *\ $_mod\ * ]] && return 0
1351     [[ " $mods_checked_as_dep " == *\ $_mod\ * ]] && return 1
1352
1353     # This should never happen, but...
1354     [[ -d $_moddir ]] || return 1
1355
1356     [[ $2 ]] || mods_checked_as_dep+=" $_mod "
1357
1358     if [[ " $omit_dracutmodules " == *\ $_mod\ * ]]; then
1359         dinfo "dracut module '$_mod' will not be installed, because it's in the list to be omitted!"
1360         return 1
1361     fi
1362
1363     if [[ " $dracutmodules $add_dracutmodules $force_add_dracutmodules" == *\ $_mod\ * ]]; then
1364         if [[ " $force_add_dracutmodules " == *\ $_mod\ * ]]; then
1365             module_check $_mod 1; ret=$?
1366         else
1367             module_check $_mod 0; ret=$?
1368         fi
1369         # explicit module, so also accept ret=255
1370         [[ $ret = 0 || $ret = 255 ]] || return 1
1371     else
1372         # module not in our list
1373         if [[ $dracutmodules = all ]]; then
1374             # check, if we can and should install this module
1375             module_check $_mod || return 1
1376         else
1377             # skip this module
1378             return 1
1379         fi
1380     fi
1381
1382     for _moddep in $(module_depends $_mod); do
1383         # handle deps as if they were manually added
1384         [[ " $add_dracutmodules " == *\ $_moddep\ * ]] || \
1385             add_dracutmodules+=" $_moddep "
1386         [[ " $force_add_dracutmodules " == *\ $_moddep\ * ]] || \
1387             force_add_dracutmodules+=" $_moddep "
1388         # if a module we depend on fail, fail also
1389         if ! check_module $_moddep; then
1390             derror "dracut module '$_mod' depends on '$_moddep', which can't be installed"
1391             return 1
1392         fi
1393     done
1394
1395     [[ " $mods_to_load " == *\ $_mod\ * ]] || \
1396         mods_to_load+=" $_mod "
1397
1398     return 0
1399 }
1400
1401 # for_each_module_dir <func>
1402 # execute "<func> <dracut module> 1"
1403 for_each_module_dir() {
1404     local _modcheck
1405     local _mod
1406     local _moddir
1407     local _func
1408     _func=$1
1409     for _moddir in "$dracutbasedir/modules.d"/[0-9][0-9]*; do
1410         [[ -d $_moddir ]] || continue;
1411         [[ -e $_moddir/install || -e $_moddir/installkernel || \
1412             -e $_moddir/module-setup.sh ]] || continue
1413         _mod=${_moddir##*/}; _mod=${_mod#[0-9][0-9]}
1414         $_func $_mod 1
1415     done
1416
1417     # Report any missing dracut modules, the user has specified
1418     _modcheck="$add_dracutmodules $force_add_dracutmodules"
1419     [[ $dracutmodules != all ]] && _modcheck="$m $dracutmodules"
1420     for _mod in $_modcheck; do
1421         [[ " $mods_to_load " == *\ $_mod\ * ]] && continue
1422         [[ " $omit_dracutmodules " == *\ $_mod\ * ]] && continue
1423         derror "dracut module '$_mod' cannot be found or installed."
1424     done
1425 }
1426
1427 # Install a single kernel module along with any firmware it may require.
1428 # $1 = full path to kernel module to install
1429 install_kmod_with_fw() {
1430     # no need to go further if the module is already installed
1431
1432     [[ -e "${initdir}/lib/modules/$kernel/${1##*/lib/modules/$kernel/}" ]] \
1433         && return 0
1434
1435     if [[ $DRACUT_KERNEL_LAZY_HASHDIR ]] && [[ -e "$DRACUT_KERNEL_LAZY_HASHDIR/${1##*/}" ]]; then
1436         read ret < "$DRACUT_KERNEL_LAZY_HASHDIR/${1##*/}"
1437         return $ret
1438     fi
1439
1440     if [[ $omit_drivers ]]; then
1441         local _kmod=${1##*/}
1442         _kmod=${_kmod%.ko}
1443         _kmod=${_kmod/-/_}
1444         if [[ "$_kmod" =~ $omit_drivers ]]; then
1445             dinfo "Omitting driver $_kmod"
1446             return 0
1447         fi
1448         if [[ "${1##*/lib/modules/$kernel/}" =~ $omit_drivers ]]; then
1449             dinfo "Omitting driver $_kmod"
1450             return 0
1451         fi
1452     fi
1453
1454     if [[ $silent_omit_drivers ]]; then
1455         local _kmod=${1##*/}
1456         _kmod=${_kmod%.ko}
1457         _kmod=${_kmod/-/_}
1458         [[ "$_kmod" =~ $silent_omit_drivers ]] && return 0
1459         [[ "${1##*/lib/modules/$kernel/}" =~ $silent_omit_drivers ]] && return 0
1460     fi
1461
1462     inst_simple "$1" "/lib/modules/$kernel/${1##*/lib/modules/$kernel/}"
1463     ret=$?
1464     [[ $DRACUT_KERNEL_LAZY_HASHDIR ]] && \
1465         [[ -d "$DRACUT_KERNEL_LAZY_HASHDIR" ]] && \
1466         echo $ret > "$DRACUT_KERNEL_LAZY_HASHDIR/${1##*/}"
1467     (($ret != 0)) && return $ret
1468
1469     local _modname=${1##*/} _fwdir _found _fw
1470     _modname=${_modname%.ko*}
1471     for _fw in $(modinfo -k $kernel -F firmware $1 2>/dev/null); do
1472         _found=''
1473         for _fwdir in $fw_dir; do
1474             if [[ -d $_fwdir && -f $_fwdir/$_fw ]]; then
1475                 inst_simple "$_fwdir/$_fw" "/lib/firmware/$_fw"
1476                 _found=yes
1477             fi
1478         done
1479         if [[ $_found != yes ]]; then
1480             if ! [[ -d $(echo /sys/module/${_modname//-/_}|{ read a b; echo $a; }) ]]; then
1481                 dinfo "Possible missing firmware \"${_fw}\" for kernel module" \
1482                     "\"${_modname}.ko\""
1483             else
1484                 dwarn "Possible missing firmware \"${_fw}\" for kernel module" \
1485                     "\"${_modname}.ko\""
1486             fi
1487         fi
1488     done
1489     return 0
1490 }
1491
1492 # Do something with all the dependencies of a kernel module.
1493 # Note that kernel modules depend on themselves using the technique we use
1494 # $1 = function to call for each dependency we find
1495 #      It will be passed the full path to the found kernel module
1496 # $2 = module to get dependencies for
1497 # rest of args = arguments to modprobe
1498 # _fderr specifies FD passed from surrounding scope
1499 for_each_kmod_dep() {
1500     local _func=$1 _kmod=$2 _cmd _modpath _options
1501     shift 2
1502     modprobe "$@" --ignore-install --show-depends $_kmod 2>&${_fderr} | (
1503         while read _cmd _modpath _options; do
1504             [[ $_cmd = insmod ]] || continue
1505             $_func ${_modpath} || exit $?
1506         done
1507     )
1508 }
1509
1510 dracut_kernel_post() {
1511     local _moddirname=${srcmods%%/lib/modules/*}
1512     local _pid
1513
1514     if [[ $DRACUT_KERNEL_LAZY_HASHDIR ]] && [[ -f "$DRACUT_KERNEL_LAZY_HASHDIR/lazylist" ]]; then
1515         xargs -r modprobe -a ${_moddirname:+-d ${_moddirname}/} \
1516             --ignore-install --show-depends --set-version $kernel \
1517             < "$DRACUT_KERNEL_LAZY_HASHDIR/lazylist" 2>/dev/null \
1518             | sort -u \
1519             | while read _cmd _modpath _options; do
1520             [[ $_cmd = insmod ]] || continue
1521             echo "$_modpath"
1522         done > "$DRACUT_KERNEL_LAZY_HASHDIR/lazylist.dep"
1523
1524         (
1525             if [[ $DRACUT_INSTALL ]] && [[ -z $_moddirname ]]; then
1526                 xargs -r $DRACUT_INSTALL ${initdir:+-D "$initdir"} -a < "$DRACUT_KERNEL_LAZY_HASHDIR/lazylist.dep"
1527             else
1528                 while read _modpath; do
1529                     local _destpath=$_modpath
1530                     [[ $_moddirname ]] && _destpath=${_destpath##$_moddirname/}
1531                     _destpath=${_destpath##*/lib/modules/$kernel/}
1532                     inst_simple "$_modpath" "/lib/modules/$kernel/${_destpath}" || exit $?
1533                 done < "$DRACUT_KERNEL_LAZY_HASHDIR/lazylist.dep"
1534             fi
1535         ) &
1536         _pid=$(jobs -p | while read a ; do printf ":$a";done)
1537         _pid=${_pid##*:}
1538
1539         if [[ $DRACUT_INSTALL ]]; then
1540             xargs -r modinfo -k $kernel -F firmware < "$DRACUT_KERNEL_LAZY_HASHDIR/lazylist.dep" \
1541                 | while read line; do
1542                 for _fwdir in $fw_dir; do
1543                     echo $_fwdir/$line;
1544                 done;
1545             done | xargs -r $DRACUT_INSTALL ${initdir:+-D "$initdir"} -a -o
1546         else
1547             for _fw in $(xargs -r modinfo -k $kernel -F firmware < "$DRACUT_KERNEL_LAZY_HASHDIR/lazylist.dep"); do
1548                 for _fwdir in $fw_dir; do
1549                     if [[ -d $_fwdir && -f $_fwdir/$_fw ]]; then
1550                         inst_simple "$_fwdir/$_fw" "/lib/firmware/$_fw"
1551                         break
1552                     fi
1553                 done
1554             done
1555         fi
1556
1557         wait $_pid
1558     fi
1559
1560     for _f in modules.builtin.bin modules.builtin modules.order; do
1561         [[ $srcmods/$_f ]] && inst_simple "$srcmods/$_f" "/lib/modules/$kernel/$_f"
1562     done
1563
1564     # generate module dependencies for the initrd
1565     if [[ -d $initdir/lib/modules/$kernel ]] && \
1566         ! depmod -a -b "$initdir" $kernel; then
1567         dfatal "\"depmod -a $kernel\" failed."
1568         exit 1
1569     fi
1570
1571     [[ $DRACUT_KERNEL_LAZY_HASHDIR ]] && rm -fr -- "$DRACUT_KERNEL_LAZY_HASHDIR"
1572 }
1573
1574 [[ "$kernel_current" ]] || export kernel_current=$(uname -r)
1575
1576 module_is_host_only() {
1577     local _mod=$1
1578     local _modenc a i _k _s _v _aliases
1579     _mod=${_mod##*/}
1580     _mod=${_mod%.ko}
1581     _modenc=${_mod//-/_}
1582
1583     [[ " $add_drivers " == *\ ${_mod}\ * ]] && return 0
1584
1585     # check if module is loaded
1586     [[ ${host_modules["$_modenc"]} ]] && return 0
1587
1588     [[ "$kernel_current" ]] || export kernel_current=$(uname -r)
1589
1590     if [[ "$kernel_current" != "$kernel" ]]; then
1591         # check if module is loadable on the current kernel
1592         # this covers the case, where a new module is introduced
1593         # or a module was renamed
1594         # or a module changed from builtin to a module
1595
1596         if [[ -d /lib/modules/$kernel_current ]]; then
1597             # if the modinfo can be parsed, but the module
1598             # is not loaded, then we can safely return 1
1599             modinfo -F filename "$_mod" &>/dev/null && return 1
1600         fi
1601
1602         _aliases=$(modinfo -k $kernel -F alias $_mod 2>/dev/null)
1603
1604         # if the module has no aliases, install it
1605         [[ $_aliases ]] || return 0
1606
1607         # finally check all modalias
1608         for a in $_aliases; do
1609             for i in "${!host_modalias[@]}"; do
1610                 [[ $i == $a ]]  && return 0
1611             done
1612         done
1613
1614     fi
1615
1616     return 1
1617 }
1618
1619 find_kernel_modules_by_path () {
1620     local _OLDIFS
1621
1622     [[ -f "$srcmods/modules.dep" ]] || return 0
1623
1624     _OLDIFS=$IFS
1625     IFS=:
1626     while read a rest; do
1627         [[ $a = */$1/* ]] || [[ $a = updates/* ]] || continue
1628         printf "%s\n" "$srcmods/$a"
1629     done < "$srcmods/modules.dep"
1630     IFS=$_OLDIFS
1631     return 0
1632 }
1633
1634 find_kernel_modules () {
1635     find_kernel_modules_by_path  drivers
1636 }
1637
1638 # instmods [-c [-s]] <kernel module> [<kernel module> ... ]
1639 # instmods [-c [-s]] <kernel subsystem>
1640 # install kernel modules along with all their dependencies.
1641 # <kernel subsystem> can be e.g. "=block" or "=drivers/usb/storage"
1642 instmods() {
1643     [[ $no_kernel = yes ]] && return
1644     # called [sub]functions inherit _fderr
1645     local _fderr=9
1646     local _check=no
1647     local _silent=no
1648     if [[ $1 = '-c' ]]; then
1649         _check=yes
1650         shift
1651     fi
1652
1653     if [[ $1 = '-s' ]]; then
1654         _silent=yes
1655         shift
1656     fi
1657
1658     function inst1mod() {
1659         local _ret=0 _mod="$1"
1660         case $_mod in
1661             =*)
1662                 ( [[ "$_mpargs" ]] && echo $_mpargs
1663                     find_kernel_modules_by_path "${_mod#=}" ) \
1664                         | instmods
1665                 ((_ret+=$?))
1666                 ;;
1667             --*) _mpargs+=" $_mod" ;;
1668             *)
1669                 _mod=${_mod##*/}
1670                 # if we are already installed, skip this module and go on
1671                 # to the next one.
1672                 if [[ $DRACUT_KERNEL_LAZY_HASHDIR ]] && \
1673                     [[ -f "$DRACUT_KERNEL_LAZY_HASHDIR/${_mod%.ko}.ko" ]]; then
1674                     read _ret <"$DRACUT_KERNEL_LAZY_HASHDIR/${_mod%.ko}.ko"
1675                     return $_ret
1676                 fi
1677
1678                 _mod=${_mod/-/_}
1679                 if [[ $omit_drivers ]] && [[ "$_mod" =~ $omit_drivers ]]; then
1680                     dinfo "Omitting driver ${_mod##$srcmods}"
1681                     return 0
1682                 fi
1683
1684                 # If we are building a host-specific initramfs and this
1685                 # module is not already loaded, move on to the next one.
1686                 [[ $hostonly ]] \
1687                     && ! module_is_host_only "$_mod" \
1688                     && return 0
1689
1690                 if [[ "$_check" = "yes" ]] || ! [[ $DRACUT_KERNEL_LAZY_HASHDIR ]]; then
1691                     # We use '-d' option in modprobe only if modules prefix path
1692                     # differs from default '/'.  This allows us to use dracut with
1693                     # old version of modprobe which doesn't have '-d' option.
1694                     local _moddirname=${srcmods%%/lib/modules/*}
1695                     [[ -n ${_moddirname} ]] && _moddirname="-d ${_moddirname}/"
1696
1697                     # ok, load the module, all its dependencies, and any firmware
1698                     # it may require
1699                     for_each_kmod_dep install_kmod_with_fw $_mod \
1700                         --set-version $kernel ${_moddirname} $_mpargs
1701                     ((_ret+=$?))
1702                 else
1703                     [[ $DRACUT_KERNEL_LAZY_HASHDIR ]] && \
1704                         echo $_mod >> "$DRACUT_KERNEL_LAZY_HASHDIR/lazylist"
1705                 fi
1706                 ;;
1707         esac
1708         return $_ret
1709     }
1710
1711     function instmods_1() {
1712         local _mod _mpargs
1713         if (($# == 0)); then  # filenames from stdin
1714             while read _mod; do
1715                 inst1mod "${_mod%.ko*}" || {
1716                     if [[ "$_check" == "yes" ]]; then
1717                         [[ "$_silent" == "no" ]] && dfatal "Failed to install module $_mod"
1718                         return 1
1719                     fi
1720                 }
1721             done
1722         fi
1723         while (($# > 0)); do  # filenames as arguments
1724             inst1mod ${1%.ko*} || {
1725                 if [[ "$_check" == "yes" ]]; then
1726                     [[ "$_silent" == "no" ]] && dfatal "Failed to install module $1"
1727                     return 1
1728                 fi
1729             }
1730             shift
1731         done
1732         return 0
1733     }
1734
1735     local _ret _filter_not_found='FATAL: Module .* not found.'
1736     # Capture all stderr from modprobe to _fderr. We could use {var}>...
1737     # redirections, but that would make dracut require bash4 at least.
1738     eval "( instmods_1 \"\$@\" ) ${_fderr}>&1" \
1739         | while read line; do [[ "$line" =~ $_filter_not_found ]] || echo $line;done | derror
1740     _ret=$?
1741     return $_ret
1742 }
1743 # get_cpu_vendor
1744 # Only two values are returned: AMD or Intel
1745 get_cpu_vendor ()
1746 {
1747     if grep -qE AMD /proc/cpuinfo; then
1748         printf "AMD"
1749     fi
1750     if grep -qE Intel /proc/cpuinfo; then
1751         printf "Intel"
1752     fi
1753 }
1754
1755 # get_host_ucode
1756 # Get the hosts' ucode file based on the /proc/cpuinfo
1757 get_ucode_file ()
1758 {
1759     local family=`grep -E "cpu family" /proc/cpuinfo | head -1 | sed s/.*:\ //`
1760     local model=`grep -E "model" /proc/cpuinfo |grep -v name | head -1 | sed s/.*:\ //`
1761     local stepping=`grep -E "stepping" /proc/cpuinfo | head -1 | sed s/.*:\ //`
1762
1763     if [[ "$(get_cpu_vendor)" == "AMD" ]]; then
1764         # If family greater or equal than 0x15
1765         if [[ $family -ge 21 ]]; then
1766             printf "microcode_amd_fam15h.bin"
1767         else
1768             printf "microcode_amd.bin"
1769         fi
1770     fi
1771     if [[ "$(get_cpu_vendor)" == "Intel" ]]; then
1772         # The /proc/cpuinfo are in decimal.
1773         printf "%02x-%02x-%02x" ${family} ${model} ${stepping}
1774     fi
1775 }
1776
1777 # Not every device in /dev/mapper should be examined.
1778 # If it is an LVM device, touch only devices which have /dev/VG/LV symlink.
1779 lvm_internal_dev() {
1780     local dev_dm_dir=/sys/dev/block/$1/dm
1781     [[ ! -f $dev_dm_dir/uuid || $(<$dev_dm_dir/uuid) != LVM-* ]] && return 1 # Not an LVM device
1782     local DM_VG_NAME DM_LV_NAME DM_LV_LAYER
1783     eval $(dmsetup splitname --nameprefixes --noheadings --rows "$(<$dev_dm_dir/name)" 2>/dev/null)
1784     [[ ${DM_VG_NAME} ]] && [[ ${DM_LV_NAME} ]] || return 0 # Better skip this!
1785     [[ ${DM_LV_LAYER} ]] || [[ ! -L /dev/${DM_VG_NAME}/${DM_LV_NAME} ]]
1786 }
1787