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