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