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