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} ${DRACUT_FIPS_MODE:+-f} "$@"
 767     (($? != 0)) && derror $DRACUT_INSTALL ${initdir:+-D "$initdir"} ${DRACUT_RESOLVE_DEPS:+-l} ${DRACUT_FIPS_MODE:+-f} "$@" || :
 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}  ${DRACUT_FIPS_MODE:+-f} "$@"
 781     (($? != 0)) && derror $DRACUT_INSTALL ${initdir:+-D "$initdir"} ${DRACUT_RESOLVE_DEPS:+-l}  ${DRACUT_FIPS_MODE:+-f} "$@" || :
 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}  ${DRACUT_FIPS_MODE:+-f} "$@"
 788     ret=$?
 789     (($ret != 0)) && derror $DRACUT_INSTALL ${initdir:+-D "$initdir"} -a ${DRACUT_RESOLVE_DEPS:+-l}  ${DRACUT_FIPS_MODE:+-f} "$@" || :
 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}  ${DRACUT_FIPS_MODE:+-f} "$@"
 801     (($? != 0)) && derror $DRACUT_INSTALL ${initdir:+-D "$initdir"} ${DRACUT_RESOLVE_DEPS:+-l}  ${DRACUT_FIPS_MODE:+-f} "$@" || :
 802 }
 803
 804 inst_binary() {
 805     $DRACUT_INSTALL ${initdir:+-D "$initdir"} ${DRACUT_RESOLVE_DEPS:+-l}  ${DRACUT_FIPS_MODE:+-f} "$@"
 806     (($? != 0)) && derror $DRACUT_INSTALL ${initdir:+-D "$initdir"} ${DRACUT_RESOLVE_DEPS:+-l}  ${DRACUT_FIPS_MODE:+-f} "$@" || :
 807 }
 808
 809 inst_script() {
 810     $DRACUT_INSTALL ${initdir:+-D "$initdir"} ${DRACUT_RESOLVE_DEPS:+-l}  ${DRACUT_FIPS_MODE:+-f} "$@"
 811     (($? != 0)) && derror $DRACUT_INSTALL ${initdir:+-D "$initdir"} ${DRACUT_RESOLVE_DEPS:+-l}  ${DRACUT_FIPS_MODE:+-f} "$@" || :
 812 }
 813
 814 mark_hostonly() {
 815     for i in "$@"; do
 816         echo "$i" >> "$initdir/lib/dracut/hostonly-files"
 817     done
 818 }
 819
 820 # find symlinks linked to given library file
 821 # $1 = library file
 822 # Function searches for symlinks by stripping version numbers appended to
 823 # library filename, checks if it points to the same target and finally
 824 # prints the list of symlinks to stdout.
 825 #
 826 # Example:
 827 # rev_lib_symlinks libfoo.so.8.1
 828 # output: libfoo.so.8 libfoo.so
 829 # (Only if libfoo.so.8 and libfoo.so exists on host system.)
 830 rev_lib_symlinks() {
 831     [[ ! $1 ]] && return 0
 832
 833     local fn="$1" orig="$(readlink -f "$1")" links=''
 834
 835     [[ ${fn} == *.so.* ]] || return 1
 836
 837     until [[ ${fn##*.} == so ]]; do
 838         fn="${fn%.*}"
 839         [[ -L ${fn} && $(readlink -f "${fn}") == ${orig} ]] && links+=" ${fn}"
 840     done
 841
 842     echo "${links}"
 843 }
 844
 845 # attempt to install any programs specified in a udev rule
 846 inst_rule_programs() {
 847     local _prog _bin
 848
 849     if grep -qE 'PROGRAM==?"[^ "]+' "$1"; then
 850         for _prog in $(grep -E 'PROGRAM==?"[^ "]+' "$1" | sed -r 's/.*PROGRAM==?"([^ "]+).*/\1/'); do
 851             _bin=""
 852             if [ -x ${udevdir}/$_prog ]; then
 853                 _bin=${udevdir}/$_prog
 854             elif [[ "${_prog/\$env\{/}" == "$_prog" ]]; then
 855                 _bin=$(find_binary "$_prog") || {
 856                     dinfo "Skipping program $_prog using in udev rule ${1##*/} as it cannot be found"
 857                     continue;
 858                 }
 859             fi
 860
 861             [[ $_bin ]] && inst_binary "$_bin"
 862         done
 863     fi
 864     if grep -qE 'RUN[+=]=?"[^ "]+' "$1"; then
 865         for _prog in $(grep -E 'RUN[+=]=?"[^ "]+' "$1" | sed -r 's/.*RUN[+=]=?"([^ "]+).*/\1/'); do
 866             _bin=""
 867             if [ -x ${udevdir}/$_prog ]; then
 868                 _bin=${udevdir}/$_prog
 869             elif [[ "${_prog/\$env\{/}" == "$_prog" ]] && [[ "${_prog}" != "/sbin/initqueue" ]]; then
 870                 _bin=$(find_binary "$_prog") || {
 871                     dinfo "Skipping program $_prog using in udev rule ${1##*/} as it cannot be found"
 872                     continue;
 873                 }
 874             fi
 875
 876             [[ $_bin ]] && inst_binary "$_bin"
 877         done
 878     fi
 879     if grep -qE 'IMPORT\{program\}==?"[^ "]+' "$1"; then
 880         for _prog in $(grep -E 'IMPORT\{program\}==?"[^ "]+' "$1" | sed -r 's/.*IMPORT\{program\}==?"([^ "]+).*/\1/'); do
 881             _bin=""
 882             if [ -x ${udevdir}/$_prog ]; then
 883                 _bin=${udevdir}/$_prog
 884             elif [[ "${_prog/\$env\{/}" == "$_prog" ]]; then
 885                 _bin=$(find_binary "$_prog") || {
 886                     dinfo "Skipping program $_prog using in udev rule ${1##*/} as it cannot be found"
 887                     continue;
 888                 }
 889             fi
 890
 891             [[ $_bin ]] && dracut_install "$_bin"
 892         done
 893     fi
 894 }
 895
 896 # attempt to install any programs specified in a udev rule
 897 inst_rule_group_owner() {
 898     local i
 899
 900     if grep -qE 'OWNER=?"[^ "]+' "$1"; then
 901         for i in $(grep -E 'OWNER=?"[^ "]+' "$1" | sed -r 's/.*OWNER=?"([^ "]+).*/\1/'); do
 902             if ! egrep -q "^$i:" "$initdir/etc/passwd" 2>/dev/null; then
 903                 egrep "^$i:" /etc/passwd 2>/dev/null >> "$initdir/etc/passwd"
 904             fi
 905         done
 906     fi
 907     if grep -qE 'GROUP=?"[^ "]+' "$1"; then
 908         for i in $(grep -E 'GROUP=?"[^ "]+' "$1" | sed -r 's/.*GROUP=?"([^ "]+).*/\1/'); do
 909             if ! egrep -q "^$i:" "$initdir/etc/group" 2>/dev/null; then
 910                 egrep "^$i:" /etc/group 2>/dev/null >> "$initdir/etc/group"
 911             fi
 912         done
 913     fi
 914 }
 915
 916 inst_rule_initqueue() {
 917     if grep -q -F initqueue "$1"; then
 918         dracut_need_initqueue
 919     fi
 920 }
 921
 922 # udev rules always get installed in the same place, so
 923 # create a function to install them to make life simpler.
 924 inst_rules() {
 925     local _target=/etc/udev/rules.d _rule _found
 926
 927     inst_dir "${udevdir}/rules.d"
 928     inst_dir "$_target"
 929     for _rule in "$@"; do
 930         if [ "${_rule#/}" = "$_rule" ]; then
 931             for r in ${udevdir}/rules.d ${hostonly:+/etc/udev/rules.d}; do
 932                 if [[ -e $r/$_rule ]]; then
 933                     _found="$r/$_rule"
 934                     inst_rule_programs "$_found"
 935                     inst_rule_group_owner "$_found"
 936                     inst_rule_initqueue "$_found"
 937                     inst_simple "$_found"
 938                 fi
 939             done
 940         fi
 941         for r in '' $dracutbasedir/rules.d/; do
 942             # skip rules without an absolute path
 943             [[ "${r}$_rule" != /* ]] && continue
 944
 945             if [[ -f ${r}$_rule ]]; then
 946                 _found="${r}$_rule"
 947                 inst_rule_programs "$_found"
 948                 inst_rule_group_owner "$_found"
 949                 inst_rule_initqueue "$_found"
 950                 inst_simple "$_found" "$_target/${_found##*/}"
 951             fi
 952         done
 953         [[ $_found ]] || dinfo "Skipping udev rule: $_rule"
 954     done
 955 }
 956
 957 inst_rules_wildcard() {
 958     local _target=/etc/udev/rules.d _rule _found
 959
 960     inst_dir "${udevdir}/rules.d"
 961     inst_dir "$_target"
 962     for _rule in ${udevdir}/rules.d/$1 ${dracutbasedir}/rules.d/$1 ; do
 963         if [[ -e $_rule ]]; then
 964             inst_rule_programs "$_rule"
 965             inst_rule_group_owner "$_rule"
 966             inst_rule_initqueue "$_rule"
 967             inst_simple "$_rule"
 968             _found=$_rule
 969         fi
 970     done
 971     if [ -n ${hostonly} ] ; then
 972         for _rule in ${_target}/$1 ; do
 973             if [[ -f $_rule ]]; then
 974                 inst_rule_programs "$_rule"
 975                 inst_rule_group_owner "$_rule"
 976                 inst_rule_initqueue "$_rule"
 977                 inst_simple "$_rule"
 978                 _found=$_rule
 979             fi
 980         done
 981     fi
 982     [[ $_found ]] || dinfo "Skipping udev rule: $_rule"
 983 }
 984
 985 prepare_udev_rules() {
 986     [ -z "$UDEVVERSION" ] && export UDEVVERSION=$(udevadm --version)
 987
 988     for f in "$@"; do
 989         f="${initdir}/etc/udev/rules.d/$f"
 990         [ -e "$f" ] || continue
 991         while read line; do
 992             if [ "${line%%IMPORT PATH_ID}" != "$line" ]; then
 993                 if [ $UDEVVERSION -ge 174 ]; then
 994                     printf '%sIMPORT{builtin}="path_id"\n' "${line%%IMPORT PATH_ID}"
 995                 else
 996                     printf '%sIMPORT{program}="path_id %%p"\n' "${line%%IMPORT PATH_ID}"
 997                 fi
 998             elif [ "${line%%IMPORT BLKID}" != "$line" ]; then
 999                 if [ $UDEVVERSION -ge 176 ]; then
1000                     printf '%sIMPORT{builtin}="blkid"\n' "${line%%IMPORT BLKID}"
1001                 else
1002                     printf '%sIMPORT{program}="/sbin/blkid -o udev -p $tempnode"\n' "${line%%IMPORT BLKID}"
1003                 fi
1004             else
1005                 echo "$line"
1006             fi
1007         done < "${f}" > "${f}.new"
1008         mv "${f}.new" "$f"
1009     done
1010 }
1011
1012 # install function specialized for hooks
1013 # $1 = type of hook, $2 = hook priority (lower runs first), $3 = hook
1014 # All hooks should be POSIX/SuS compliant, they will be sourced by init.
1015 inst_hook() {
1016     if ! [[ -f $3 ]]; then
1017         dfatal "Cannot install a hook ($3) that does not exist."
1018         dfatal "Aborting initrd creation."
1019         exit 1
1020     elif ! [[ "$hookdirs" == *$1* ]]; then
1021         dfatal "No such hook type $1. Aborting initrd creation."
1022         exit 1
1023     fi
1024     inst_simple "$3" "/lib/dracut/hooks/${1}/${2}-${3##*/}"
1025 }
1026
1027 # install any of listed files
1028 #
1029 # If first argument is '-d' and second some destination path, first accessible
1030 # source is installed into this path, otherwise it will installed in the same
1031 # path as source.  If none of listed files was installed, function return 1.
1032 # On first successful installation it returns with 0 status.
1033 #
1034 # Example:
1035 #
1036 # inst_any -d /bin/foo /bin/bar /bin/baz
1037 #
1038 # Lets assume that /bin/baz exists, so it will be installed as /bin/foo in
1039 # initramfs.
1040 inst_any() {
1041     local to f
1042
1043     [[ $1 = '-d' ]] && to="$2" && shift 2
1044
1045     for f in "$@"; do
1046         if [[ -e $f ]]; then
1047             [[ $to ]] && inst "$f" "$to" && return 0
1048             inst "$f" && return 0
1049         fi
1050     done
1051
1052     return 1
1053 }
1054
1055
1056 # inst_libdir_file [-n <pattern>] <file> [<file>...]
1057 # Install a <file> located on a lib directory to the initramfs image
1058 # -n <pattern> install matching files
1059 inst_libdir_file() {
1060     local _files
1061     if [[ "$1" == "-n" ]]; then
1062         local _pattern=$2
1063         shift 2
1064         for _dir in $libdirs; do
1065             for _i in "$@"; do
1066                 for _f in "$_dir"/$_i; do
1067                     [[ "$_f" =~ $_pattern ]] || continue
1068                     [[ -e "$_f" ]] && _files+="$_f "
1069                 done
1070             done
1071         done
1072     else
1073         for _dir in $libdirs; do
1074             for _i in "$@"; do
1075                 for _f in "$_dir"/$_i; do
1076                     [[ -e "$_f" ]] && _files+="$_f "
1077                 done
1078             done
1079         done
1080     fi
1081     [[ $_files ]] && inst_multiple $_files
1082 }
1083
1084
1085 # install function decompressing the target and handling symlinks
1086 # $@ = list of compressed (gz or bz2) files or symlinks pointing to such files
1087 #
1088 # Function install targets in the same paths inside overlay but decompressed
1089 # and without extensions (.gz, .bz2).
1090 inst_decompress() {
1091     local _src _cmd
1092
1093     for _src in $@
1094     do
1095         case ${_src} in
1096             *.gz) _cmd='gzip -f -d' ;;
1097             *.bz2) _cmd='bzip2 -d' ;;
1098             *) return 1 ;;
1099         esac
1100         inst_simple ${_src}
1101         # Decompress with chosen tool.  We assume that tool changes name e.g.
1102         # from 'name.gz' to 'name'.
1103         ${_cmd} "${initdir}${_src}"
1104     done
1105 }
1106
1107 # It's similar to above, but if file is not compressed, performs standard
1108 # install.
1109 # $@ = list of files
1110 inst_opt_decompress() {
1111     local _src
1112
1113     for _src in $@
1114     do
1115         inst_decompress "${_src}" || inst "${_src}"
1116     done
1117 }
1118
1119 # module_check <dracut module>
1120 # execute the check() function of module-setup.sh of <dracut module>
1121 # or the "check" script, if module-setup.sh is not found
1122 # "check $hostonly" is called
1123 module_check() {
1124     local _moddir=$(echo ${dracutbasedir}/modules.d/??${1})
1125     local _ret
1126     local _forced=0
1127     local _hostonly=$hostonly
1128     [ $# -eq 2 ] && _forced=$2
1129     [[ -d $_moddir ]] || return 1
1130     if [[ ! -f $_moddir/module-setup.sh ]]; then
1131         # if we do not have a check script, we are unconditionally included
1132         [[ -x $_moddir/check ]] || return 0
1133         [ $_forced -ne 0 ] && unset hostonly
1134         $_moddir/check $hostonly
1135         _ret=$?
1136     else
1137         unset check depends cmdline install installkernel
1138         check() { true; }
1139         . $_moddir/module-setup.sh
1140         is_func check || return 0
1141         [ $_forced -ne 0 ] && unset hostonly
1142         moddir=$_moddir check $hostonly
1143         _ret=$?
1144         unset check depends cmdline install installkernel
1145     fi
1146     hostonly=$_hostonly
1147     return $_ret
1148 }
1149
1150 # module_check_mount <dracut module>
1151 # execute the check() function of module-setup.sh of <dracut module>
1152 # or the "check" script, if module-setup.sh is not found
1153 # "mount_needs=1 check 0" is called
1154 module_check_mount() {
1155     local _moddir=$(echo ${dracutbasedir}/modules.d/??${1})
1156     local _ret
1157     mount_needs=1
1158     [[ -d $_moddir ]] || return 1
1159     if [[ ! -f $_moddir/module-setup.sh ]]; then
1160         # if we do not have a check script, we are unconditionally included
1161         [[ -x $_moddir/check ]] || return 0
1162         mount_needs=1 $_moddir/check 0
1163         _ret=$?
1164     else
1165         unset check depends cmdline install installkernel
1166         check() { false; }
1167         . $_moddir/module-setup.sh
1168         moddir=$_moddir check 0
1169         _ret=$?
1170         unset check depends cmdline install installkernel
1171     fi
1172     unset mount_needs
1173     return $_ret
1174 }
1175
1176 # module_depends <dracut module>
1177 # execute the depends() function of module-setup.sh of <dracut module>
1178 # or the "depends" script, if module-setup.sh is not found
1179 module_depends() {
1180     local _moddir=$(echo ${dracutbasedir}/modules.d/??${1})
1181     local _ret
1182     [[ -d $_moddir ]] || return 1
1183     if [[ ! -f $_moddir/module-setup.sh ]]; then
1184         # if we do not have a check script, we have no deps
1185         [[ -x $_moddir/check ]] || return 0
1186         $_moddir/check -d
1187         return $?
1188     else
1189         unset check depends cmdline install installkernel
1190         depends() { true; }
1191         . $_moddir/module-setup.sh
1192         moddir=$_moddir depends
1193         _ret=$?
1194         unset check depends cmdline install installkernel
1195         return $_ret
1196     fi
1197 }
1198
1199 # module_cmdline <dracut module>
1200 # execute the cmdline() function of module-setup.sh of <dracut module>
1201 # or the "cmdline" script, if module-setup.sh is not found
1202 module_cmdline() {
1203     local _moddir=$(echo ${dracutbasedir}/modules.d/??${1})
1204     local _ret
1205     [[ -d $_moddir ]] || return 1
1206     if [[ ! -f $_moddir/module-setup.sh ]]; then
1207         [[ -x $_moddir/cmdline ]] && . "$_moddir/cmdline"
1208         return $?
1209     else
1210         unset check depends cmdline install installkernel
1211         cmdline() { true; }
1212         . $_moddir/module-setup.sh
1213         moddir=$_moddir cmdline
1214         _ret=$?
1215         unset check depends cmdline install installkernel
1216         return $_ret
1217     fi
1218 }
1219
1220 # module_install <dracut module>
1221 # execute the install() function of module-setup.sh of <dracut module>
1222 # or the "install" script, if module-setup.sh is not found
1223 module_install() {
1224     local _moddir=$(echo ${dracutbasedir}/modules.d/??${1})
1225     local _ret
1226     [[ -d $_moddir ]] || return 1
1227     if [[ ! -f $_moddir/module-setup.sh ]]; then
1228         [[ -x $_moddir/install ]] && . "$_moddir/install"
1229         return $?
1230     else
1231         unset check depends cmdline install installkernel
1232         install() { true; }
1233         . $_moddir/module-setup.sh
1234         moddir=$_moddir install
1235         _ret=$?
1236         unset check depends cmdline install installkernel
1237         return $_ret
1238     fi
1239 }
1240
1241 # module_installkernel <dracut module>
1242 # execute the installkernel() function of module-setup.sh of <dracut module>
1243 # or the "installkernel" script, if module-setup.sh is not found
1244 module_installkernel() {
1245     local _moddir=$(echo ${dracutbasedir}/modules.d/??${1})
1246     local _ret
1247     [[ -d $_moddir ]] || return 1
1248     if [[ ! -f $_moddir/module-setup.sh ]]; then
1249         [[ -x $_moddir/installkernel ]] && . "$_moddir/installkernel"
1250         return $?
1251     else
1252         unset check depends cmdline install installkernel
1253         installkernel() { true; }
1254         . $_moddir/module-setup.sh
1255         moddir=$_moddir installkernel
1256         _ret=$?
1257         unset check depends cmdline install installkernel
1258         return $_ret
1259     fi
1260 }
1261
1262 # check_mount <dracut module>
1263 # check_mount checks, if a dracut module is needed for the given
1264 # device and filesystem types in "${host_fs_types[@]}"
1265 check_mount() {
1266     local _mod=$1
1267     local _moddir=$(echo ${dracutbasedir}/modules.d/??${1})
1268     local _ret
1269     local _moddep
1270
1271     [ "${#host_fs_types[*]}" -le 0 ] && return 1
1272
1273     # If we are already scheduled to be loaded, no need to check again.
1274     [[ " $mods_to_load " == *\ $_mod\ * ]] && return 0
1275     [[ " $mods_checked_as_dep " == *\ $_mod\ * ]] && return 1
1276
1277     # This should never happen, but...
1278     [[ -d $_moddir ]] || return 1
1279
1280     [[ $2 ]] || mods_checked_as_dep+=" $_mod "
1281
1282     if [[ " $omit_dracutmodules " == *\ $_mod\ * ]]; then
1283         return 1
1284     fi
1285
1286     if [[ " $dracutmodules $add_dracutmodules $force_add_dracutmodules" == *\ $_mod\ * ]]; then
1287         module_check_mount $_mod; ret=$?
1288
1289         # explicit module, so also accept ret=255
1290         [[ $ret = 0 || $ret = 255 ]] || return 1
1291     else
1292         # module not in our list
1293         if [[ $dracutmodules = all ]]; then
1294             # check, if we can and should install this module
1295             module_check_mount $_mod || return 1
1296         else
1297             # skip this module
1298             return 1
1299         fi
1300     fi
1301
1302
1303     for _moddep in $(module_depends $_mod); do
1304         # handle deps as if they were manually added
1305         [[ " $add_dracutmodules " == *\ $_moddep\ * ]] || \
1306             add_dracutmodules+=" $_moddep "
1307         [[ " $force_add_dracutmodules " == *\ $_moddep\ * ]] || \
1308             force_add_dracutmodules+=" $_moddep "
1309         # if a module we depend on fail, fail also
1310         if ! check_module $_moddep; then
1311             derror "dracut module '$_mod' depends on '$_moddep', which can't be installed"
1312             return 1
1313         fi
1314     done
1315
1316     [[ " $mods_to_load " == *\ $_mod\ * ]] || \
1317         mods_to_load+=" $_mod "
1318
1319     return 0
1320 }
1321
1322 # check_module <dracut module> [<use_as_dep>]
1323 # check if a dracut module is to be used in the initramfs process
1324 # if <use_as_dep> is set, then the process also keeps track
1325 # that the modules were checked for the dependency tracking process
1326 check_module() {
1327     local _mod=$1
1328     local _moddir=$(echo ${dracutbasedir}/modules.d/??${1})
1329     local _ret
1330     local _moddep
1331     # If we are already scheduled to be loaded, no need to check again.
1332     [[ " $mods_to_load " == *\ $_mod\ * ]] && return 0
1333     [[ " $mods_checked_as_dep " == *\ $_mod\ * ]] && return 1
1334
1335     # This should never happen, but...
1336     [[ -d $_moddir ]] || return 1
1337
1338     [[ $2 ]] || mods_checked_as_dep+=" $_mod "
1339
1340     if [[ " $omit_dracutmodules " == *\ $_mod\ * ]]; then
1341         dinfo "dracut module '$_mod' will not be installed, because it's in the list to be omitted!"
1342         return 1
1343     fi
1344
1345     if [[ " $dracutmodules $add_dracutmodules $force_add_dracutmodules" == *\ $_mod\ * ]]; then
1346         if [[ " $force_add_dracutmodules " == *\ $_mod\ * ]]; then
1347             module_check $_mod 1; ret=$?
1348         else
1349             module_check $_mod 0; ret=$?
1350         fi
1351         # explicit module, so also accept ret=255
1352         [[ $ret = 0 || $ret = 255 ]] || return 1
1353     else
1354         # module not in our list
1355         if [[ $dracutmodules = all ]]; then
1356             # check, if we can and should install this module
1357             module_check $_mod || return 1
1358         else
1359             # skip this module
1360             return 1
1361         fi
1362     fi
1363
1364     for _moddep in $(module_depends $_mod); do
1365         # handle deps as if they were manually added
1366         [[ " $add_dracutmodules " == *\ $_moddep\ * ]] || \
1367             add_dracutmodules+=" $_moddep "
1368         [[ " $force_add_dracutmodules " == *\ $_moddep\ * ]] || \
1369             force_add_dracutmodules+=" $_moddep "
1370         # if a module we depend on fail, fail also
1371         if ! check_module $_moddep; then
1372             derror "dracut module '$_mod' depends on '$_moddep', which can't be installed"
1373             return 1
1374         fi
1375     done
1376
1377     [[ " $mods_to_load " == *\ $_mod\ * ]] || \
1378         mods_to_load+=" $_mod "
1379
1380     return 0
1381 }
1382
1383 # for_each_module_dir <func>
1384 # execute "<func> <dracut module> 1"
1385 for_each_module_dir() {
1386     local _modcheck
1387     local _mod
1388     local _moddir
1389     local _func
1390     _func=$1
1391     for _moddir in "$dracutbasedir/modules.d"/[0-9][0-9]*; do
1392         [[ -d $_moddir ]] || continue;
1393         [[ -e $_moddir/install || -e $_moddir/installkernel || \
1394             -e $_moddir/module-setup.sh ]] || continue
1395         _mod=${_moddir##*/}; _mod=${_mod#[0-9][0-9]}
1396         $_func $_mod 1
1397     done
1398
1399     # Report any missing dracut modules, the user has specified
1400     _modcheck="$add_dracutmodules $force_add_dracutmodules"
1401     [[ $dracutmodules != all ]] && _modcheck="$m $dracutmodules"
1402     for _mod in $_modcheck; do
1403         [[ " $mods_to_load " == *\ $_mod\ * ]] && continue
1404         [[ " $omit_dracutmodules " == *\ $_mod\ * ]] && continue
1405         derror "dracut module '$_mod' cannot be found or installed."
1406     done
1407 }
1408
1409 # Install a single kernel module along with any firmware it may require.
1410 # $1 = full path to kernel module to install
1411 install_kmod_with_fw() {
1412     # no need to go further if the module is already installed
1413
1414     [[ -e "${initdir}/lib/modules/$kernel/${1##*/lib/modules/$kernel/}" ]] \
1415         && return 0
1416
1417     if [[ $DRACUT_KERNEL_LAZY_HASHDIR ]] && [[ -e "$DRACUT_KERNEL_LAZY_HASHDIR/${1##*/}" ]]; then
1418         read ret < "$DRACUT_KERNEL_LAZY_HASHDIR/${1##*/}"
1419         return $ret
1420     fi
1421
1422     if [[ $omit_drivers ]]; then
1423         local _kmod=${1##*/}
1424         _kmod=${_kmod%.ko}
1425         _kmod=${_kmod/-/_}
1426         if [[ "$_kmod" =~ $omit_drivers ]]; then
1427             dinfo "Omitting driver $_kmod"
1428             return 0
1429         fi
1430         if [[ "${1##*/lib/modules/$kernel/}" =~ $omit_drivers ]]; then
1431             dinfo "Omitting driver $_kmod"
1432             return 0
1433         fi
1434     fi
1435
1436     if [[ $silent_omit_drivers ]]; then
1437         local _kmod=${1##*/}
1438         _kmod=${_kmod%.ko}
1439         _kmod=${_kmod/-/_}
1440         [[ "$_kmod" =~ $silent_omit_drivers ]] && return 0
1441         [[ "${1##*/lib/modules/$kernel/}" =~ $silent_omit_drivers ]] && return 0
1442     fi
1443
1444     inst_simple "$1" "/lib/modules/$kernel/${1##*/lib/modules/$kernel/}"
1445     ret=$?
1446     [[ $DRACUT_KERNEL_LAZY_HASHDIR ]] && \
1447         [[ -d "$DRACUT_KERNEL_LAZY_HASHDIR" ]] && \
1448         echo $ret > "$DRACUT_KERNEL_LAZY_HASHDIR/${1##*/}"
1449     (($ret != 0)) && return $ret
1450
1451     local _modname=${1##*/} _fwdir _found _fw
1452     _modname=${_modname%.ko*}
1453     for _fw in $(modinfo -k $kernel -F firmware $1 2>/dev/null); do
1454         _found=''
1455         for _fwdir in $fw_dir; do
1456             if [[ -d $_fwdir && -f $_fwdir/$_fw ]]; then
1457                 inst_simple "$_fwdir/$_fw" "/lib/firmware/$_fw"
1458                 _found=yes
1459             fi
1460         done
1461         if [[ $_found != yes ]]; then
1462             if ! [[ -d $(echo /sys/module/${_modname//-/_}|{ read a b; echo $a; }) ]]; then
1463                 dinfo "Possible missing firmware \"${_fw}\" for kernel module" \
1464                     "\"${_modname}.ko\""
1465             else
1466                 dwarn "Possible missing firmware \"${_fw}\" for kernel module" \
1467                     "\"${_modname}.ko\""
1468             fi
1469         fi
1470     done
1471     return 0
1472 }
1473
1474 # Do something with all the dependencies of a kernel module.
1475 # Note that kernel modules depend on themselves using the technique we use
1476 # $1 = function to call for each dependency we find
1477 #      It will be passed the full path to the found kernel module
1478 # $2 = module to get dependencies for
1479 # rest of args = arguments to modprobe
1480 # _fderr specifies FD passed from surrounding scope
1481 for_each_kmod_dep() {
1482     local _func=$1 _kmod=$2 _cmd _modpath _options
1483     shift 2
1484     modprobe "$@" --ignore-install --show-depends $_kmod 2>&${_fderr} | (
1485         while read _cmd _modpath _options; do
1486             [[ $_cmd = insmod ]] || continue
1487             $_func ${_modpath} || exit $?
1488         done
1489     )
1490 }
1491
1492 dracut_kernel_post() {
1493     local _moddirname=${srcmods%%/lib/modules/*}
1494     local _pid
1495
1496     if [[ $DRACUT_KERNEL_LAZY_HASHDIR ]] && [[ -f "$DRACUT_KERNEL_LAZY_HASHDIR/lazylist" ]]; then
1497         xargs -r modprobe -a ${_moddirname:+-d ${_moddirname}/} \
1498             --ignore-install --show-depends --set-version $kernel \
1499             < "$DRACUT_KERNEL_LAZY_HASHDIR/lazylist" 2>/dev/null \
1500             | sort -u \
1501             | while read _cmd _modpath _options; do
1502             [[ $_cmd = insmod ]] || continue
1503             echo "$_modpath"
1504         done > "$DRACUT_KERNEL_LAZY_HASHDIR/lazylist.dep"
1505
1506         (
1507             if [[ $DRACUT_INSTALL ]] && [[ -z $_moddirname ]]; then
1508                 xargs -r $DRACUT_INSTALL ${initdir:+-D "$initdir"} -a < "$DRACUT_KERNEL_LAZY_HASHDIR/lazylist.dep"
1509             else
1510                 while read _modpath; do
1511                     local _destpath=$_modpath
1512                     [[ $_moddirname ]] && _destpath=${_destpath##$_moddirname/}
1513                     _destpath=${_destpath##*/lib/modules/$kernel/}
1514                     inst_simple "$_modpath" "/lib/modules/$kernel/${_destpath}" || exit $?
1515                 done < "$DRACUT_KERNEL_LAZY_HASHDIR/lazylist.dep"
1516             fi
1517         ) &
1518         _pid=$(jobs -p | while read a ; do printf ":$a";done)
1519         _pid=${_pid##*:}
1520
1521         if [[ $DRACUT_INSTALL ]]; then
1522             xargs -r modinfo -k $kernel -F firmware < "$DRACUT_KERNEL_LAZY_HASHDIR/lazylist.dep" \
1523                 | while read line; do
1524                 for _fwdir in $fw_dir; do
1525                     echo $_fwdir/$line;
1526                 done;
1527             done | xargs -r $DRACUT_INSTALL ${initdir:+-D "$initdir"} -a -o
1528         else
1529             for _fw in $(xargs -r modinfo -k $kernel -F firmware < "$DRACUT_KERNEL_LAZY_HASHDIR/lazylist.dep"); do
1530                 for _fwdir in $fw_dir; do
1531                     if [[ -d $_fwdir && -f $_fwdir/$_fw ]]; then
1532                         inst_simple "$_fwdir/$_fw" "/lib/firmware/$_fw"
1533                         break
1534                     fi
1535                 done
1536             done
1537         fi
1538
1539         wait $_pid
1540     fi
1541
1542     for _f in modules.builtin.bin modules.builtin modules.order; do
1543         [[ $srcmods/$_f ]] && inst_simple "$srcmods/$_f" "/lib/modules/$kernel/$_f"
1544     done
1545
1546     # generate module dependencies for the initrd
1547     if [[ -d $initdir/lib/modules/$kernel ]] && \
1548         ! depmod -a -b "$initdir" $kernel; then
1549         dfatal "\"depmod -a $kernel\" failed."
1550         exit 1
1551     fi
1552
1553     [[ $DRACUT_KERNEL_LAZY_HASHDIR ]] && rm -fr -- "$DRACUT_KERNEL_LAZY_HASHDIR"
1554 }
1555
1556 [[ "$kernel_current" ]] || export kernel_current=$(uname -r)
1557
1558 module_is_host_only() {
1559     local _mod=$1
1560     local _modenc a i _k _s _v _aliases
1561     _mod=${_mod##*/}
1562     _mod=${_mod%.ko}
1563     _modenc=${_mod//-/_}
1564
1565     [[ " $add_drivers " == *\ ${_mod}\ * ]] && return 0
1566
1567     # check if module is loaded
1568     [[ ${host_modules["$_modenc"]} ]] && return 0
1569
1570     [[ "$kernel_current" ]] || export kernel_current=$(uname -r)
1571
1572     if [[ "$kernel_current" != "$kernel" ]]; then
1573         # check if module is loadable on the current kernel
1574         # this covers the case, where a new module is introduced
1575         # or a module was renamed
1576         # or a module changed from builtin to a module
1577
1578         if [[ -d /lib/modules/$kernel_current ]]; then
1579             # if the modinfo can be parsed, but the module
1580             # is not loaded, then we can safely return 1
1581             modinfo -F filename "$_mod" &>/dev/null && return 1
1582         fi
1583
1584         _aliases=$(modinfo -k $kernel -F alias $_mod 2>/dev/null)
1585
1586         # if the module has no aliases, install it
1587         [[ $_aliases ]] || return 0
1588
1589         # finally check all modalias
1590         for a in $_aliases; do
1591             for i in "${!host_modalias[@]}"; do
1592                 [[ $i == $a ]]  && return 0
1593             done
1594         done
1595
1596     fi
1597
1598     return 1
1599 }
1600
1601 find_kernel_modules_by_path () {
1602     local _OLDIFS
1603
1604     [[ -f "$srcmods/modules.dep" ]] || return 0
1605
1606     _OLDIFS=$IFS
1607     IFS=:
1608     while read a rest; do
1609         [[ $a = */$1/* ]] || [[ $a = updates/* ]] || continue
1610         printf "%s\n" "$srcmods/$a"
1611     done < "$srcmods/modules.dep"
1612     IFS=$_OLDIFS
1613     return 0
1614 }
1615
1616 find_kernel_modules () {
1617     find_kernel_modules_by_path  drivers
1618 }
1619
1620 # instmods [-c [-s]] <kernel module> [<kernel module> ... ]
1621 # instmods [-c [-s]] <kernel subsystem>
1622 # install kernel modules along with all their dependencies.
1623 # <kernel subsystem> can be e.g. "=block" or "=drivers/usb/storage"
1624 instmods() {
1625     [[ $no_kernel = yes ]] && return
1626     # called [sub]functions inherit _fderr
1627     local _fderr=9
1628     local _check=no
1629     local _silent=no
1630     if [[ $1 = '-c' ]]; then
1631         _check=yes
1632         shift
1633     fi
1634
1635     if [[ $1 = '-s' ]]; then
1636         _silent=yes
1637         shift
1638     fi
1639
1640     function inst1mod() {
1641         local _ret=0 _mod="$1"
1642         case $_mod in
1643             =*)
1644                 ( [[ "$_mpargs" ]] && echo $_mpargs
1645                     find_kernel_modules_by_path "${_mod#=}" ) \
1646                         | instmods
1647                 ((_ret+=$?))
1648                 ;;
1649             --*) _mpargs+=" $_mod" ;;
1650             *)
1651                 _mod=${_mod##*/}
1652                 # if we are already installed, skip this module and go on
1653                 # to the next one.
1654                 if [[ $DRACUT_KERNEL_LAZY_HASHDIR ]] && \
1655                     [[ -f "$DRACUT_KERNEL_LAZY_HASHDIR/${_mod%.ko}.ko" ]]; then
1656                     read _ret <"$DRACUT_KERNEL_LAZY_HASHDIR/${_mod%.ko}.ko"
1657                     return $_ret
1658                 fi
1659
1660                 _mod=${_mod/-/_}
1661                 if [[ $omit_drivers ]] && [[ "$_mod" =~ $omit_drivers ]]; then
1662                     dinfo "Omitting driver ${_mod##$srcmods}"
1663                     return 0
1664                 fi
1665
1666                 # If we are building a host-specific initramfs and this
1667                 # module is not already loaded, move on to the next one.
1668                 [[ $hostonly ]] \
1669                     && ! module_is_host_only "$_mod" \
1670                     && return 0
1671
1672                 if [[ "$_check" = "yes" ]] || ! [[ $DRACUT_KERNEL_LAZY_HASHDIR ]]; then
1673                     # We use '-d' option in modprobe only if modules prefix path
1674                     # differs from default '/'.  This allows us to use dracut with
1675                     # old version of modprobe which doesn't have '-d' option.
1676                     local _moddirname=${srcmods%%/lib/modules/*}
1677                     [[ -n ${_moddirname} ]] && _moddirname="-d ${_moddirname}/"
1678
1679                     # ok, load the module, all its dependencies, and any firmware
1680                     # it may require
1681                     for_each_kmod_dep install_kmod_with_fw $_mod \
1682                         --set-version $kernel ${_moddirname} $_mpargs
1683                     ((_ret+=$?))
1684                 else
1685                     [[ $DRACUT_KERNEL_LAZY_HASHDIR ]] && \
1686                         echo $_mod >> "$DRACUT_KERNEL_LAZY_HASHDIR/lazylist"
1687                 fi
1688                 ;;
1689         esac
1690         return $_ret
1691     }
1692
1693     function instmods_1() {
1694         local _mod _mpargs
1695         if (($# == 0)); then  # filenames from stdin
1696             while read _mod; do
1697                 inst1mod "${_mod%.ko*}" || {
1698                     if [[ "$_check" == "yes" ]]; then
1699                         [[ "$_silent" == "no" ]] && dfatal "Failed to install module $_mod"
1700                         return 1
1701                     fi
1702                 }
1703             done
1704         fi
1705         while (($# > 0)); do  # filenames as arguments
1706             inst1mod ${1%.ko*} || {
1707                 if [[ "$_check" == "yes" ]]; then
1708                     [[ "$_silent" == "no" ]] && dfatal "Failed to install module $1"
1709                     return 1
1710                 fi
1711             }
1712             shift
1713         done
1714         return 0
1715     }
1716
1717     local _ret _filter_not_found='FATAL: Module .* not found.'
1718     # Capture all stderr from modprobe to _fderr. We could use {var}>...
1719     # redirections, but that would make dracut require bash4 at least.
1720     eval "( instmods_1 \"\$@\" ) ${_fderr}>&1" \
1721         | while read line; do [[ "$line" =~ $_filter_not_found ]] || echo $line;done | derror
1722     _ret=$?
1723     return $_ret
1724 }
1725 # get_cpu_vendor
1726 # Only two values are returned: AMD or Intel
1727 get_cpu_vendor ()
1728 {
1729     if grep -qE AMD /proc/cpuinfo; then
1730         printf "AMD"
1731     fi
1732     if grep -qE Intel /proc/cpuinfo; then
1733         printf "Intel"
1734     fi
1735 }
1736
1737 # get_host_ucode
1738 # Get the hosts' ucode file based on the /proc/cpuinfo
1739 get_ucode_file ()
1740 {
1741     local family=`grep -E "cpu family" /proc/cpuinfo | head -1 | sed s/.*:\ //`
1742     local model=`grep -E "model" /proc/cpuinfo |grep -v name | head -1 | sed s/.*:\ //`
1743     local stepping=`grep -E "stepping" /proc/cpuinfo | head -1 | sed s/.*:\ //`
1744
1745     if [[ "$(get_cpu_vendor)" == "AMD" ]]; then
1746         # If family greater or equal than 0x15
1747         if [[ $family -ge 21 ]]; then
1748             printf "microcode_amd_fam15h.bin"
1749         else
1750             printf "microcode_amd.bin"
1751         fi
1752     fi
1753     if [[ "$(get_cpu_vendor)" == "Intel" ]]; then
1754         # The /proc/cpuinfo are in decimal.
1755         printf "%02x-%02x-%02x" ${family} ${model} ${stepping}
1756     fi
1757 }
1758
1759 # Not every device in /dev/mapper should be examined.
1760 # If it is an LVM device, touch only devices which have /dev/VG/LV symlink.
1761 lvm_internal_dev() {
1762     local dev_dm_dir=/sys/dev/block/$1/dm
1763     [[ ! -f $dev_dm_dir/uuid || $(<$dev_dm_dir/uuid) != LVM-* ]] && return 1 # Not an LVM device
1764     local DM_VG_NAME DM_LV_NAME DM_LV_LAYER
1765     eval $(dmsetup splitname --nameprefixes --noheadings --rows "$(<$dev_dm_dir/name)" 2>/dev/null)
1766     [[ ${DM_VG_NAME} ]] && [[ ${DM_LV_NAME} ]] || return 0 # Better skip this!
1767     [[ ${DM_LV_LAYER} ]] || [[ ! -L /dev/${DM_VG_NAME}/${DM_LV_NAME} ]]
1768 }
1769