dracut-functions.sh

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