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 $(
 112         ldconfig -pN 2>/dev/null | grep -F '=>' | grep -E -v '/(lib|lib64|usr/lib|usr/lib64)/[^/]*$' | while read a b c d; do
 113             d=${d%/*}
 114             printf "%s\n" "$d";
 115         done
 116     ); do
 117         a["$i"]=1;
 118     done;
 119     printf "%s\n" ${!a[@]}
 120 }
 121
 122 # Detect lib paths
 123 if ! [[ $libdirs ]] ; then
 124     if [[ "$(ldd /bin/sh)" == */lib64/* ]] &>/dev/null \
 125         && [[ -d /lib64 ]]; then
 126         libdirs+=" /lib64"
 127         [[ -d /usr/lib64 ]] && libdirs+=" /usr/lib64"
 128     else
 129         libdirs+=" /lib"
 130         [[ -d /usr/lib ]] && libdirs+=" /usr/lib"
 131     fi
 132
 133     libdirs+=" $(ldconfig_paths)"
 134
 135     export libdirs
 136 fi
 137
 138 if ! [[ $kernel ]]; then
 139     kernel=$(uname -r)
 140     export kernel
 141 fi
 142
 143 # Version comparision function.  Assumes Linux style version scheme.
 144 # $1 = version a
 145 # $2 = comparision op (gt, ge, eq, le, lt, ne)
 146 # $3 = version b
 147 vercmp() {
 148     local _n1=(${1//./ }) _op=$2 _n2=(${3//./ }) _i _res
 149
 150     for ((_i=0; ; _i++))
 151     do
 152         if [[ ! ${_n1[_i]}${_n2[_i]} ]]; then _res=0
 153         elif ((${_n1[_i]:-0} > ${_n2[_i]:-0})); then _res=1
 154         elif ((${_n1[_i]:-0} < ${_n2[_i]:-0})); then _res=2
 155         else continue
 156         fi
 157         break
 158     done
 159
 160     case $_op in
 161         gt) ((_res == 1));;
 162         ge) ((_res != 2));;
 163         eq) ((_res == 0));;
 164         le) ((_res != 1));;
 165         lt) ((_res == 2));;
 166         ne) ((_res != 0));;
 167     esac
 168 }
 169
 170 srcmods="/lib/modules/$kernel/"
 171
 172 [[ $drivers_dir ]] && {
 173     if ! command -v kmod &>/dev/null && vercmp "$(modprobe --version | cut -d' ' -f3)" lt 3.7; then
 174         dfatal 'To use --kmoddir option module-init-tools >= 3.7 is required.'
 175         exit 1
 176     fi
 177     srcmods="$drivers_dir"
 178 }
 179 export srcmods
 180
 181 if ! type dinfo >/dev/null 2>&1; then
 182     . "$dracutbasedir/dracut-logger.sh"
 183     dlog_init
 184 fi
 185
 186 if ! [[ $initdir ]]; then
 187     dfatal "initdir not set"
 188     exit 1
 189 fi
 190
 191 # export standard hookdirs
 192 [[ $hookdirs ]] || {
 193     hookdirs="cmdline pre-udev pre-trigger netroot "
 194     hookdirs+="initqueue initqueue/settled initqueue/online initqueue/finished initqueue/timeout "
 195     hookdirs+="pre-mount pre-pivot cleanup mount "
 196     hookdirs+="emergency shutdown-emergency pre-shutdown shutdown "
 197     export hookdirs
 198 }
 199
 200 dracut_need_initqueue() {
 201     >"$initdir/lib/dracut/need-initqueue"
 202 }
 203
 204 dracut_module_included() {
 205     [[ " $mods_to_load $modules_loaded " == *\ $*\ * ]]
 206 }
 207
 208 # Create all subdirectories for given path without creating the last element.
 209 # $1 = path
 210 mksubdirs() {
 211     [[ -e ${1%/*} ]] || mkdir -m 0755 -p -- "${1%/*}"
 212 }
 213
 214 # is_func <command>
 215 # Check whether $1 is a function.
 216 is_func() {
 217     [[ "$(type -t "$1")" = "function" ]]
 218 }
 219
 220 # Function prints global variables in format name=value line by line.
 221 # $@ = list of global variables' name
 222 print_vars() {
 223     local _var _value
 224
 225     for _var in "$@"
 226     do
 227         eval printf -v _value "%s" \""\$$_var"\"
 228         [[ ${_value} ]] && printf '%s="%s"\n' "$_var" "$_value"
 229     done
 230 }
 231
 232 # normalize_path <path>
 233 # Prints the normalized path, where it removes any duplicated
 234 # and trailing slashes.
 235 # Example:
 236 # $ normalize_path ///test/test//
 237 # /test/test
 238 normalize_path() {
 239     shopt -q -s extglob
 240     set -- "${1//+(\/)//}"
 241     shopt -q -u extglob
 242     printf "%s\n" "${1%/}"
 243 }
 244
 245 # convert_abs_rel <from> <to>
 246 # Prints the relative path, when creating a symlink to <to> from <from>.
 247 # Example:
 248 # $ convert_abs_rel /usr/bin/test /bin/test-2
 249 # ../../bin/test-2
 250 # $ ln -s $(convert_abs_rel /usr/bin/test /bin/test-2) /usr/bin/test
 251 convert_abs_rel() {
 252     local __current __absolute __abssize __cursize __newpath
 253     local -i __i __level
 254
 255     set -- "$(normalize_path "$1")" "$(normalize_path "$2")"
 256
 257     # corner case #1 - self looping link
 258     [[ "$1" == "$2" ]] && { printf "%s\n" "${1##*/}"; return; }
 259
 260     # corner case #2 - own dir link
 261     [[ "${1%/*}" == "$2" ]] && { printf ".\n"; return; }
 262
 263     IFS="/" __current=($1)
 264     IFS="/" __absolute=($2)
 265
 266     __abssize=${#__absolute[@]}
 267     __cursize=${#__current[@]}
 268
 269     while [[ "${__absolute[__level]}" == "${__current[__level]}" ]]
 270     do
 271         (( __level++ ))
 272         if (( __level > __abssize || __level > __cursize ))
 273         then
 274             break
 275         fi
 276     done
 277
 278     for ((__i = __level; __i < __cursize-1; __i++))
 279     do
 280         if ((__i > __level))
 281         then
 282             __newpath=$__newpath"/"
 283         fi
 284         __newpath=$__newpath".."
 285     done
 286
 287     for ((__i = __level; __i < __abssize; __i++))
 288     do
 289         if [[ -n $__newpath ]]
 290         then
 291             __newpath=$__newpath"/"
 292         fi
 293         __newpath=$__newpath${__absolute[__i]}
 294     done
 295
 296     printf "%s\n" "$__newpath"
 297 }
 298
 299 if [[ "$(ln --help)" == *--relative* ]]; then
 300     ln_r() {
 301         ln -sfnr "${initdir}/$1" "${initdir}/$2"
 302     }
 303 else
 304     ln_r() {
 305         local _source=$1
 306         local _dest=$2
 307         [[ -d "${_dest%/*}" ]] && _dest=$(readlink -f "${_dest%/*}")/${_dest##*/}
 308         ln -sfn -- "$(convert_abs_rel "${_dest}" "${_source}")" "${initdir}/${_dest}"
 309     }
 310 fi
 311
 312 # get_fs_env <device>
 313 # Get and the ID_FS_TYPE variable from udev for a device.
 314 # Example:
 315 # $ get_fs_env /dev/sda2
 316 # ext4
 317 get_fs_env() {
 318     local evalstr
 319     local found
 320
 321     [[ $1 ]] || return
 322     unset ID_FS_TYPE
 323     ID_FS_TYPE=$(blkid -u filesystem -o export -- "$1" \
 324         | while read line; do
 325             if [[ "$line" == TYPE\=* ]]; then
 326                 printf "%s" "${line#TYPE=}";
 327                 exit 0;
 328             fi
 329             done)
 330     if [[ $ID_FS_TYPE ]]; then
 331         printf "%s" "$ID_FS_TYPE"
 332         return 0
 333     fi
 334     return 1
 335 }
 336
 337 # get_maj_min <device>
 338 # Prints the major and minor of a device node.
 339 # Example:
 340 # $ get_maj_min /dev/sda2
 341 # 8:2
 342 get_maj_min() {
 343     local _maj _min _majmin
 344     _majmin="$(stat -L -c '%t:%T' "$1" 2>/dev/null)"
 345     printf "%s" "$((0x${_majmin%:*})):$((0x${_majmin#*:}))"
 346 }
 347
 348
 349 # get_devpath_block <device>
 350 # get the DEVPATH in /sys of a block device
 351 get_devpath_block() {
 352     local _majmin _i
 353     _majmin=$(get_maj_min "$1")
 354
 355     for _i in /sys/block/*/dev /sys/block/*/*/dev; do
 356         [[ -e "$_i" ]] || continue
 357         if [[ "$_majmin" == "$(<"$_i")" ]]; then
 358             printf "%s" "${_i%/dev}"
 359             return 0
 360         fi
 361     done
 362     return 1
 363 }
 364
 365 # get a persistent path from a device
 366 get_persistent_dev() {
 367     local i _tmp _dev
 368
 369     _dev=$(get_maj_min "$1")
 370     [ -z "$_dev" ] && return
 371
 372     for i in \
 373         /dev/mapper/* \
 374         /dev/disk/${persistent_policy:-by-uuid}/* \
 375         /dev/disk/by-uuid/* \
 376         /dev/disk/by-label/* \
 377         /dev/disk/by-partuuid/* \
 378         /dev/disk/by-partlabel/* \
 379         /dev/disk/by-id/* \
 380         /dev/disk/by-path/* \
 381         ; do
 382         [[ -e "$i" ]] || continue
 383         [[ $i == /dev/mapper/control ]] && continue
 384         [[ $i == /dev/mapper/mpath* ]] && continue
 385         _tmp=$(get_maj_min "$i")
 386         if [ "$_tmp" = "$_dev" ]; then
 387             printf -- "%s" "$i"
 388             return
 389         fi
 390     done
 391 }
 392
 393 expand_persistent_dev() {
 394     local _dev=$1
 395
 396     case "$_dev" in
 397         LABEL=*)
 398             _dev="/dev/disk/by-label/${_dev#LABEL=}"
 399             ;;
 400         UUID=*)
 401             _dev="${_dev#UUID=}"
 402             _dev="${_dev,,}"
 403             _dev="/dev/disk/by-uuid/${_dev}"
 404             ;;
 405         PARTUUID=*)
 406             _dev="${_dev#PARTUUID=}"
 407             _dev="${_dev,,}"
 408             _dev="/dev/disk/by-partuuid/${_dev}"
 409             ;;
 410         PARTLABEL=*)
 411             _dev="/dev/disk/by-partlabel/${_dev#PARTLABEL=}"
 412             ;;
 413     esac
 414     printf "%s" "$_dev"
 415 }
 416
 417 shorten_persistent_dev() {
 418     local _dev="$1"
 419     case "$_dev" in
 420         /dev/disk/by-uuid/*)
 421             printf "%s" "UUID=${_dev##*/}";;
 422         /dev/disk/by-label/*)
 423             printf "%s" "LABEL=${_dev##*/}";;
 424         /dev/disk/by-partuuid/*)
 425             printf "%s" "PARTUUID=${_dev##*/}";;
 426         /dev/disk/by-partlabel/*)
 427             printf "%s" "PARTLABEL=${_dev##*/}";;
 428         *)
 429             printf "%s" "$_dev";;
 430     esac
 431 }
 432
 433 # find_block_device <mountpoint>
 434 # Prints the major and minor number of the block device
 435 # for a given mountpoint.
 436 # Unless $use_fstab is set to "yes" the functions
 437 # uses /proc/self/mountinfo as the primary source of the
 438 # information and only falls back to /etc/fstab, if the mountpoint
 439 # is not found there.
 440 # Example:
 441 # $ find_block_device /usr
 442 # 8:4
 443 find_block_device() {
 444     local _majmin _dev _majmin _find_mpt
 445     _find_mpt="$1"
 446     if [[ $use_fstab != yes ]]; then
 447         [[ -d $_find_mpt/. ]]
 448         findmnt -e -v -n -o 'MAJ:MIN,SOURCE' --target "$_find_mpt" | { \
 449             while read _majmin _dev; do
 450                 if [[ -b $_dev ]]; then
 451                     if ! [[ $_majmin ]] || [[ $_majmin == 0:* ]]; then
 452                         _majmin=$(get_maj_min $_dev)
 453                     fi
 454                     if [[ $_majmin ]]; then
 455                         printf "%s\n" "$_majmin"
 456                     else
 457                         printf "%s\n" "$_dev"
 458                     fi
 459                     return 0
 460                 fi
 461                 if [[ $_dev = *:* ]]; then
 462                     printf "%s\n" "$_dev"
 463                     return 0
 464                 fi
 465             done; return 1; } && return 0
 466     fi
 467     # fall back to /etc/fstab
 468
 469     findmnt -e --fstab -v -n -o 'MAJ:MIN,SOURCE' --target "$_find_mpt" | { \
 470         while read _majmin _dev; do
 471             if ! [[ $_dev ]]; then
 472                 _dev="$_majmin"
 473                 unset _majmin
 474             fi
 475             if [[ -b $_dev ]]; then
 476                 [[ $_majmin ]] || _majmin=$(get_maj_min $_dev)
 477                 if [[ $_majmin ]]; then
 478                     printf "%s\n" "$_majmin"
 479                 else
 480                     printf "%s\n" "$_dev"
 481                 fi
 482                 return 0
 483             fi
 484             if [[ $_dev = *:* ]]; then
 485                 printf "%s\n" "$_dev"
 486                 return 0
 487             fi
 488         done; return 1; } && return 0
 489
 490     return 1
 491 }
 492
 493 # find_mp_fstype <mountpoint>
 494 # Echo the filesystem type for a given mountpoint.
 495 # /proc/self/mountinfo is taken as the primary source of information
 496 # and /etc/fstab is used as a fallback.
 497 # No newline is appended!
 498 # Example:
 499 # $ find_mp_fstype /;echo
 500 # ext4
 501 find_mp_fstype() {
 502     local _fs
 503
 504     if [[ $use_fstab != yes ]]; then
 505         findmnt -e -v -n -o 'FSTYPE' --target "$1" | { \
 506             while read _fs; do
 507                 [[ $_fs ]] || continue
 508                 [[ $_fs = "autofs" ]] && continue
 509                 printf "%s" "$_fs"
 510                 return 0
 511             done; return 1; } && return 0
 512     fi
 513
 514     findmnt --fstab -e -v -n -o 'FSTYPE' --target "$1" | { \
 515         while read _fs; do
 516             [[ $_fs ]] || continue
 517             [[ $_fs = "autofs" ]] && continue
 518             printf "%s" "$_fs"
 519             return 0
 520         done; return 1; } && return 0
 521
 522     return 1
 523 }
 524
 525 # find_dev_fstype <device>
 526 # Echo the filesystem type for a given device.
 527 # /proc/self/mountinfo is taken as the primary source of information
 528 # and /etc/fstab is used as a fallback.
 529 # No newline is appended!
 530 # Example:
 531 # $ find_dev_fstype /dev/sda2;echo
 532 # ext4
 533 find_dev_fstype() {
 534     local _find_dev _fs
 535     _find_dev="$1"
 536     if ! [[ "$_find_dev" = /dev* ]]; then
 537         [[ -b "/dev/block/$_find_dev" ]] && _find_dev="/dev/block/$_find_dev"
 538     fi
 539
 540     if [[ $use_fstab != yes ]]; then
 541         findmnt -e -v -n -o 'FSTYPE' --source "$_find_dev" | { \
 542             while read _fs; do
 543                 [[ $_fs ]] || continue
 544                 [[ $_fs = "autofs" ]] && continue
 545                 printf "%s" "$_fs"
 546                 return 0
 547             done; return 1; } && return 0
 548     fi
 549
 550     findmnt --fstab -e -v -n -o 'FSTYPE' --source "$_find_dev" | { \
 551         while read _fs; do
 552             [[ $_fs ]] || continue
 553             [[ $_fs = "autofs" ]] && continue
 554             printf "%s" "$_fs"
 555             return 0
 556         done; return 1; } && return 0
 557
 558     return 1
 559 }
 560
 561 # find_mp_fsopts <mountpoint>
 562 # Echo the filesystem options for a given mountpoint.
 563 # /proc/self/mountinfo is taken as the primary source of information
 564 # and /etc/fstab is used as a fallback.
 565 # No newline is appended!
 566 # Example:
 567 # $ find_mp_fsopts /;echo
 568 # rw,relatime,discard,data=ordered
 569 find_mp_fsopts() {
 570     if [[ $use_fstab != yes ]]; then
 571         findmnt -e -v -n -o 'OPTIONS' --target "$1" 2>/dev/null && return 0
 572     fi
 573
 574     findmnt --fstab -e -v -n -o 'OPTIONS' --target "$1"
 575 }
 576
 577 # find_dev_fsopts <device>
 578 # Echo the filesystem options for a given device.
 579 # /proc/self/mountinfo is taken as the primary source of information
 580 # and /etc/fstab is used as a fallback.
 581 # Example:
 582 # $ find_dev_fsopts /dev/sda2
 583 # rw,relatime,discard,data=ordered
 584 find_dev_fsopts() {
 585     local _find_dev _opts
 586     _find_dev="$1"
 587     if ! [[ "$_find_dev" = /dev* ]]; then
 588         [[ -b "/dev/block/$_find_dev" ]] && _find_dev="/dev/block/$_find_dev"
 589     fi
 590
 591     if [[ $use_fstab != yes ]]; then
 592         findmnt -e -v -n -o 'OPTIONS' --source "$_find_dev" 2>/dev/null && return 0
 593     fi
 594
 595     findmnt --fstab -e -v -n -o 'OPTIONS' --source "$_find_dev"
 596 }
 597
 598
 599 # finds the major:minor of the block device backing the root filesystem.
 600 find_root_block_device() { find_block_device /; }
 601
 602 # for_each_host_dev_fs <func>
 603 # Execute "<func> <dev> <filesystem>" for every "<dev> <fs>" pair found
 604 # in ${host_fs_types[@]}
 605 for_each_host_dev_fs()
 606 {
 607     local _func="$1"
 608     local _dev
 609     local _ret=1
 610
 611     [[ "${!host_fs_types[@]}" ]] || return 0
 612
 613     for _dev in "${!host_fs_types[@]}"; do
 614         $_func "$_dev" "${host_fs_types[$_dev]}" && _ret=0
 615     done
 616     return $_ret
 617 }
 618
 619 host_fs_all()
 620 {
 621     printf "%s\n" "${host_fs_types[@]}"
 622 }
 623
 624 # Walk all the slave relationships for a given block device.
 625 # Stop when our helper function returns success
 626 # $1 = function to call on every found block device
 627 # $2 = block device in major:minor format
 628 check_block_and_slaves() {
 629     local _x
 630     [[ -b /dev/block/$2 ]] || return 1 # Not a block device? So sorry.
 631     if ! lvm_internal_dev $2; then "$1" $2 && return; fi
 632     check_vol_slaves "$@" && return 0
 633     if [[ -f /sys/dev/block/$2/../dev ]]; then
 634         check_block_and_slaves $1 $(<"/sys/dev/block/$2/../dev") && return 0
 635     fi
 636     [[ -d /sys/dev/block/$2/slaves ]] || return 1
 637     for _x in /sys/dev/block/$2/slaves/*/dev; do
 638         [[ -f $_x ]] || continue
 639         check_block_and_slaves $1 $(<"$_x") && return 0
 640     done
 641     return 1
 642 }
 643
 644 check_block_and_slaves_all() {
 645     local _x _ret=1
 646     [[ -b /dev/block/$2 ]] || return 1 # Not a block device? So sorry.
 647     if ! lvm_internal_dev $2 && "$1" $2; then
 648         _ret=0
 649     fi
 650     check_vol_slaves "$@" && return 0
 651     if [[ -f /sys/dev/block/$2/../dev ]]; then
 652         check_block_and_slaves_all $1 $(<"/sys/dev/block/$2/../dev") && _ret=0
 653     fi
 654     [[ -d /sys/dev/block/$2/slaves ]] || return 1
 655     for _x in /sys/dev/block/$2/slaves/*/dev; do
 656         [[ -f $_x ]] || continue
 657         check_block_and_slaves_all $1 $(<"$_x") && _ret=0
 658     done
 659     return $_ret
 660 }
 661 # for_each_host_dev_and_slaves <func>
 662 # Execute "<func> <dev>" for every "<dev>" found
 663 # in ${host_devs[@]} and their slaves
 664 for_each_host_dev_and_slaves_all()
 665 {
 666     local _func="$1"
 667     local _dev
 668     local _ret=1
 669
 670     [[ "${host_devs[@]}" ]] || return 0
 671
 672     for _dev in ${host_devs[@]}; do
 673         [[ -b "$_dev" ]] || continue
 674         if check_block_and_slaves_all $_func $(get_maj_min $_dev); then
 675             _ret=0
 676         fi
 677     done
 678     return $_ret
 679 }
 680
 681 for_each_host_dev_and_slaves()
 682 {
 683     local _func="$1"
 684     local _dev
 685
 686     [[ "${host_devs[@]}" ]] || return 0
 687
 688     for _dev in ${host_devs[@]}; do
 689         [[ -b "$_dev" ]] || continue
 690         check_block_and_slaves $_func $(get_maj_min $_dev) && return 0
 691     done
 692     return 1
 693 }
 694
 695 # ugly workaround for the lvm design
 696 # There is no volume group device,
 697 # so, there are no slave devices for volume groups.
 698 # Logical volumes only have the slave devices they really live on,
 699 # but you cannot create the logical volume without the volume group.
 700 # And the volume group might be bigger than the devices the LV needs.
 701 check_vol_slaves() {
 702     local _lv _vg _pv
 703     for i in /dev/mapper/*; do
 704         [[ $i == /dev/mapper/control ]] && continue
 705         _lv=$(get_maj_min $i)
 706         if [[ $_lv = $2 ]]; then
 707             _vg=$(lvm lvs --noheadings -o vg_name $i 2>/dev/null)
 708             # strip space
 709             _vg=$(printf "%s\n" "$_vg")
 710             if [[ $_vg ]]; then
 711                 for _pv in $(lvm vgs --noheadings -o pv_name "$_vg" 2>/dev/null)
 712                 do
 713                     check_block_and_slaves $1 $(get_maj_min $_pv) && return 0
 714                 done
 715             fi
 716         fi
 717     done
 718     return 1
 719 }
 720
 721 # fs_get_option <filesystem options> <search for option>
 722 # search for a specific option in a bunch of filesystem options
 723 # and return the value
 724 fs_get_option() {
 725     local _fsopts=$1
 726     local _option=$2
 727     local OLDIFS="$IFS"
 728     IFS=,
 729     set -- $_fsopts
 730     IFS="$OLDIFS"
 731     while [ $# -gt 0 ]; do
 732         case $1 in
 733             $_option=*)
 734                 echo ${1#${_option}=}
 735                 break
 736         esac
 737         shift
 738     done
 739 }
 740
 741
 742 if ! [[ $DRACUT_INSTALL ]]; then
 743     DRACUT_INSTALL=$(find_binary dracut-install)
 744 fi
 745
 746 if ! [[ $DRACUT_INSTALL ]] && [[ -x $dracutbasedir/dracut-install ]]; then
 747     DRACUT_INSTALL=$dracutbasedir/dracut-install
 748 fi
 749
 750 if ! [[ -x $DRACUT_INSTALL ]]; then
 751     dfatal "dracut-install not found!"
 752     exit 10
 753 fi
 754
 755 [[ $DRACUT_RESOLVE_LAZY ]] || export DRACUT_RESOLVE_DEPS=1
 756 inst_dir() {
 757     [[ -e ${initdir}/"$1" ]] && return 0  # already there
 758     $DRACUT_INSTALL ${initdir:+-D "$initdir"} -d "$@"
 759     (($? != 0)) && derror $DRACUT_INSTALL ${initdir:+-D "$initdir"} -d "$@" || :
 760 }
 761
 762 inst() {
 763     local _hostonly_install
 764     if [[ "$1" == "-H" ]]; then
 765         _hostonly_install="-H"
 766         shift
 767     fi
 768     [[ -e ${initdir}/"${2:-$1}" ]] && return 0  # already there
 769     $DRACUT_INSTALL ${initdir:+-D "$initdir"} ${DRACUT_RESOLVE_DEPS:+-l} ${DRACUT_FIPS_MODE:+-f} ${_hostonly_install:+-H} "$@"
 770     (($? != 0)) && derror $DRACUT_INSTALL ${initdir:+-D "$initdir"} ${DRACUT_RESOLVE_DEPS:+-l} ${DRACUT_FIPS_MODE:+-f} ${_hostonly_install:+-H} "$@" || :
 771 }
 772
 773 inst_simple() {
 774     local _hostonly_install
 775     if [[ "$1" == "-H" ]]; then
 776         _hostonly_install="-H"
 777         shift
 778     fi
 779     [[ -e ${initdir}/"${2:-$1}" ]] && return 0  # already there
 780     [[ -e $1 ]] || return 1  # no source
 781     $DRACUT_INSTALL ${initdir:+-D "$initdir"} ${_hostonly_install:+-H} "$@"
 782     (($? != 0)) && derror $DRACUT_INSTALL ${initdir:+-D "$initdir"} ${_hostonly_install:+-H} "$@" || :
 783 }
 784
 785 inst_symlink() {
 786     local _hostonly_install
 787     if [[ "$1" == "-H" ]]; then
 788         _hostonly_install="-H"
 789         shift
 790     fi
 791     [[ -e ${initdir}/"${2:-$1}" ]] && return 0  # already there
 792     [[ -L $1 ]] || return 1
 793     $DRACUT_INSTALL ${initdir:+-D "$initdir"} ${DRACUT_RESOLVE_DEPS:+-l}  ${DRACUT_FIPS_MODE:+-f} ${_hostonly_install:+-H} "$@"
 794     (($? != 0)) && derror $DRACUT_INSTALL ${initdir:+-D "$initdir"} ${DRACUT_RESOLVE_DEPS:+-l}  ${DRACUT_FIPS_MODE:+-f} ${_hostonly_install:+-H} "$@" || :
 795 }
 796
 797 inst_multiple() {
 798     local _ret
 799     $DRACUT_INSTALL ${initdir:+-D "$initdir"} -a ${DRACUT_RESOLVE_DEPS:+-l}  ${DRACUT_FIPS_MODE:+-f} "$@"
 800     _ret=$?
 801     (($_ret != 0)) && derror $DRACUT_INSTALL ${initdir:+-D "$initdir"} -a ${DRACUT_RESOLVE_DEPS:+-l}  ${DRACUT_FIPS_MODE:+-f} ${_hostonly_install:+-H} "$@" || :
 802     return $_ret
 803 }
 804
 805 dracut_install() {
 806     inst_multiple "$@"
 807 }
 808
 809 inst_library() {
 810     local _hostonly_install
 811     if [[ "$1" == "-H" ]]; then
 812         _hostonly_install="-H"
 813         shift
 814     fi
 815     [[ -e ${initdir}/"${2:-$1}" ]] && return 0  # already there
 816     [[ -e $1 ]] || return 1  # no source
 817     $DRACUT_INSTALL ${initdir:+-D "$initdir"} ${DRACUT_RESOLVE_DEPS:+-l}  ${DRACUT_FIPS_MODE:+-f} ${_hostonly_install:+-H} "$@"
 818     (($? != 0)) && derror $DRACUT_INSTALL ${initdir:+-D "$initdir"} ${DRACUT_RESOLVE_DEPS:+-l}  ${DRACUT_FIPS_MODE:+-f} ${_hostonly_install:+-H} "$@" || :
 819 }
 820
 821 inst_binary() {
 822     $DRACUT_INSTALL ${initdir:+-D "$initdir"} ${DRACUT_RESOLVE_DEPS:+-l}  ${DRACUT_FIPS_MODE:+-f} "$@"
 823     (($? != 0)) && derror $DRACUT_INSTALL ${initdir:+-D "$initdir"} ${DRACUT_RESOLVE_DEPS:+-l}  ${DRACUT_FIPS_MODE:+-f} "$@" || :
 824 }
 825
 826 inst_script() {
 827     $DRACUT_INSTALL ${initdir:+-D "$initdir"} ${DRACUT_RESOLVE_DEPS:+-l}  ${DRACUT_FIPS_MODE:+-f} "$@"
 828     (($? != 0)) && derror $DRACUT_INSTALL ${initdir:+-D "$initdir"} ${DRACUT_RESOLVE_DEPS:+-l}  ${DRACUT_FIPS_MODE:+-f} "$@" || :
 829 }
 830
 831 mark_hostonly() {
 832     for i in "$@"; do
 833         echo "$i" >> "$initdir/lib/dracut/hostonly-files"
 834     done
 835 }
 836
 837 # find symlinks linked to given library file
 838 # $1 = library file
 839 # Function searches for symlinks by stripping version numbers appended to
 840 # library filename, checks if it points to the same target and finally
 841 # prints the list of symlinks to stdout.
 842 #
 843 # Example:
 844 # rev_lib_symlinks libfoo.so.8.1
 845 # output: libfoo.so.8 libfoo.so
 846 # (Only if libfoo.so.8 and libfoo.so exists on host system.)
 847 rev_lib_symlinks() {
 848     [[ ! $1 ]] && return 0
 849
 850     local fn="$1" orig="$(readlink -f "$1")" links=''
 851
 852     [[ ${fn} == *.so.* ]] || return 1
 853
 854     until [[ ${fn##*.} == so ]]; do
 855         fn="${fn%.*}"
 856         [[ -L ${fn} && $(readlink -f "${fn}") == ${orig} ]] && links+=" ${fn}"
 857     done
 858
 859     echo "${links}"
 860 }
 861
 862 # attempt to install any programs specified in a udev rule
 863 inst_rule_programs() {
 864     local _prog _bin
 865
 866     if grep -qE 'PROGRAM==?"[^ "]+' "$1"; then
 867         for _prog in $(grep -E 'PROGRAM==?"[^ "]+' "$1" | sed -r 's/.*PROGRAM==?"([^ "]+).*/\1/'); do
 868             _bin=""
 869             if [ -x ${udevdir}/$_prog ]; then
 870                 _bin=${udevdir}/$_prog
 871             elif [[ "${_prog/\$env\{/}" == "$_prog" ]]; then
 872                 _bin=$(find_binary "$_prog") || {
 873                     dinfo "Skipping program $_prog using in udev rule ${1##*/} as it cannot be found"
 874                     continue;
 875                 }
 876             fi
 877
 878             [[ $_bin ]] && inst_binary "$_bin"
 879         done
 880     fi
 881     if grep -qE 'RUN[+=]=?"[^ "]+' "$1"; then
 882         for _prog in $(grep -E 'RUN[+=]=?"[^ "]+' "$1" | sed -r 's/.*RUN[+=]=?"([^ "]+).*/\1/'); do
 883             _bin=""
 884             if [ -x ${udevdir}/$_prog ]; then
 885                 _bin=${udevdir}/$_prog
 886             elif [[ "${_prog/\$env\{/}" == "$_prog" ]] && [[ "${_prog}" != "/sbin/initqueue" ]]; then
 887                 _bin=$(find_binary "$_prog") || {
 888                     dinfo "Skipping program $_prog using in udev rule ${1##*/} as it cannot be found"
 889                     continue;
 890                 }
 891             fi
 892
 893             [[ $_bin ]] && inst_binary "$_bin"
 894         done
 895     fi
 896     if grep -qE 'IMPORT\{program\}==?"[^ "]+' "$1"; then
 897         for _prog in $(grep -E 'IMPORT\{program\}==?"[^ "]+' "$1" | sed -r 's/.*IMPORT\{program\}==?"([^ "]+).*/\1/'); do
 898             _bin=""
 899             if [ -x ${udevdir}/$_prog ]; then
 900                 _bin=${udevdir}/$_prog
 901             elif [[ "${_prog/\$env\{/}" == "$_prog" ]]; then
 902                 _bin=$(find_binary "$_prog") || {
 903                     dinfo "Skipping program $_prog using in udev rule ${1##*/} as it cannot be found"
 904                     continue;
 905                 }
 906             fi
 907
 908             [[ $_bin ]] && dracut_install "$_bin"
 909         done
 910     fi
 911 }
 912
 913 # attempt to install any programs specified in a udev rule
 914 inst_rule_group_owner() {
 915     local i
 916
 917     if grep -qE 'OWNER=?"[^ "]+' "$1"; then
 918         for i in $(grep -E 'OWNER=?"[^ "]+' "$1" | sed -r 's/.*OWNER=?"([^ "]+).*/\1/'); do
 919             if ! egrep -q "^$i:" "$initdir/etc/passwd" 2>/dev/null; then
 920                 egrep "^$i:" /etc/passwd 2>/dev/null >> "$initdir/etc/passwd"
 921             fi
 922         done
 923     fi
 924     if grep -qE 'GROUP=?"[^ "]+' "$1"; then
 925         for i in $(grep -E 'GROUP=?"[^ "]+' "$1" | sed -r 's/.*GROUP=?"([^ "]+).*/\1/'); do
 926             if ! egrep -q "^$i:" "$initdir/etc/group" 2>/dev/null; then
 927                 egrep "^$i:" /etc/group 2>/dev/null >> "$initdir/etc/group"
 928             fi
 929         done
 930     fi
 931 }
 932
 933 inst_rule_initqueue() {
 934     if grep -q -F initqueue "$1"; then
 935         dracut_need_initqueue
 936     fi
 937 }
 938
 939 # udev rules always get installed in the same place, so
 940 # create a function to install them to make life simpler.
 941 inst_rules() {
 942     local _target=/etc/udev/rules.d _rule _found
 943
 944     inst_dir "${udevdir}/rules.d"
 945     inst_dir "$_target"
 946     for _rule in "$@"; do
 947         if [ "${_rule#/}" = "$_rule" ]; then
 948             for r in ${udevdir}/rules.d ${hostonly:+/etc/udev/rules.d}; do
 949                 if [[ -e $r/$_rule ]]; then
 950                     _found="$r/$_rule"
 951                     inst_rule_programs "$_found"
 952                     inst_rule_group_owner "$_found"
 953                     inst_rule_initqueue "$_found"
 954                     inst_simple "$_found"
 955                 fi
 956             done
 957         fi
 958         for r in '' $dracutbasedir/rules.d/; do
 959             # skip rules without an absolute path
 960             [[ "${r}$_rule" != /* ]] && continue
 961
 962             if [[ -f ${r}$_rule ]]; then
 963                 _found="${r}$_rule"
 964                 inst_rule_programs "$_found"
 965                 inst_rule_group_owner "$_found"
 966                 inst_rule_initqueue "$_found"
 967                 inst_simple "$_found" "$_target/${_found##*/}"
 968             fi
 969         done
 970         [[ $_found ]] || dinfo "Skipping udev rule: $_rule"
 971     done
 972 }
 973
 974 inst_rules_wildcard() {
 975     local _target=/etc/udev/rules.d _rule _found
 976
 977     inst_dir "${udevdir}/rules.d"
 978     inst_dir "$_target"
 979     for _rule in ${udevdir}/rules.d/$1 ${dracutbasedir}/rules.d/$1 ; do
 980         if [[ -e $_rule ]]; then
 981             inst_rule_programs "$_rule"
 982             inst_rule_group_owner "$_rule"
 983             inst_rule_initqueue "$_rule"
 984             inst_simple "$_rule"
 985             _found=$_rule
 986         fi
 987     done
 988     if [ -n ${hostonly} ] ; then
 989         for _rule in ${_target}/$1 ; do
 990             if [[ -f $_rule ]]; then
 991                 inst_rule_programs "$_rule"
 992                 inst_rule_group_owner "$_rule"
 993                 inst_rule_initqueue "$_rule"
 994                 inst_simple "$_rule"
 995                 _found=$_rule
 996             fi
 997         done
 998     fi
 999     [[ $_found ]] || dinfo "Skipping udev rule: $_rule"
1000 }
1001
1002 prepare_udev_rules() {
1003     [ -z "$UDEVVERSION" ] && export UDEVVERSION=$(udevadm --version)
1004
1005     for f in "$@"; do
1006         f="${initdir}/etc/udev/rules.d/$f"
1007         [ -e "$f" ] || continue
1008         while read line; do
1009             if [ "${line%%IMPORT PATH_ID}" != "$line" ]; then
1010                 if [ $UDEVVERSION -ge 174 ]; then
1011                     printf '%sIMPORT{builtin}="path_id"\n' "${line%%IMPORT PATH_ID}"
1012                 else
1013                     printf '%sIMPORT{program}="path_id %%p"\n' "${line%%IMPORT PATH_ID}"
1014                 fi
1015             elif [ "${line%%IMPORT BLKID}" != "$line" ]; then
1016                 if [ $UDEVVERSION -ge 176 ]; then
1017                     printf '%sIMPORT{builtin}="blkid"\n' "${line%%IMPORT BLKID}"
1018                 else
1019                     printf '%sIMPORT{program}="/sbin/blkid -o udev -p $tempnode"\n' "${line%%IMPORT BLKID}"
1020                 fi
1021             else
1022                 echo "$line"
1023             fi
1024         done < "${f}" > "${f}.new"
1025         mv "${f}.new" "$f"
1026     done
1027 }
1028
1029 # install function specialized for hooks
1030 # $1 = type of hook, $2 = hook priority (lower runs first), $3 = hook
1031 # All hooks should be POSIX/SuS compliant, they will be sourced by init.
1032 inst_hook() {
1033     if ! [[ -f $3 ]]; then
1034         dfatal "Cannot install a hook ($3) that does not exist."
1035         dfatal "Aborting initrd creation."
1036         exit 1
1037     elif ! [[ "$hookdirs" == *$1* ]]; then
1038         dfatal "No such hook type $1. Aborting initrd creation."
1039         exit 1
1040     fi
1041     inst_simple "$3" "/lib/dracut/hooks/${1}/${2}-${3##*/}"
1042 }
1043
1044 # install any of listed files
1045 #
1046 # If first argument is '-d' and second some destination path, first accessible
1047 # source is installed into this path, otherwise it will installed in the same
1048 # path as source.  If none of listed files was installed, function return 1.
1049 # On first successful installation it returns with 0 status.
1050 #
1051 # Example:
1052 #
1053 # inst_any -d /bin/foo /bin/bar /bin/baz
1054 #
1055 # Lets assume that /bin/baz exists, so it will be installed as /bin/foo in
1056 # initramfs.
1057 inst_any() {
1058     local to f
1059
1060     [[ $1 = '-d' ]] && to="$2" && shift 2
1061
1062     for f in "$@"; do
1063         if [[ -e $f ]]; then
1064             [[ $to ]] && inst "$f" "$to" && return 0
1065             inst "$f" && return 0
1066         fi
1067     done
1068
1069     return 1
1070 }
1071
1072
1073 # inst_libdir_file [-n <pattern>] <file> [<file>...]
1074 # Install a <file> located on a lib directory to the initramfs image
1075 # -n <pattern> install matching files
1076 inst_libdir_file() {
1077     local _files
1078     if [[ "$1" == "-n" ]]; then
1079         local _pattern=$2
1080         shift 2
1081         for _dir in $libdirs; do
1082             for _i in "$@"; do
1083                 for _f in "$_dir"/$_i; do
1084                     [[ "$_f" =~ $_pattern ]] || continue
1085                     [[ -e "$_f" ]] && _files+="$_f "
1086                 done
1087             done
1088         done
1089     else
1090         for _dir in $libdirs; do
1091             for _i in "$@"; do
1092                 for _f in "$_dir"/$_i; do
1093                     [[ -e "$_f" ]] && _files+="$_f "
1094                 done
1095             done
1096         done
1097     fi
1098     [[ $_files ]] && inst_multiple $_files
1099 }
1100
1101
1102 # install function decompressing the target and handling symlinks
1103 # $@ = list of compressed (gz or bz2) files or symlinks pointing to such files
1104 #
1105 # Function install targets in the same paths inside overlay but decompressed
1106 # and without extensions (.gz, .bz2).
1107 inst_decompress() {
1108     local _src _cmd
1109
1110     for _src in $@
1111     do
1112         case ${_src} in
1113             *.gz) _cmd='gzip -f -d' ;;
1114             *.bz2) _cmd='bzip2 -d' ;;
1115             *) return 1 ;;
1116         esac
1117         inst_simple ${_src}
1118         # Decompress with chosen tool.  We assume that tool changes name e.g.
1119         # from 'name.gz' to 'name'.
1120         ${_cmd} "${initdir}${_src}"
1121     done
1122 }
1123
1124 # It's similar to above, but if file is not compressed, performs standard
1125 # install.
1126 # $@ = list of files
1127 inst_opt_decompress() {
1128     local _src
1129
1130     for _src in $@
1131     do
1132         inst_decompress "${_src}" || inst "${_src}"
1133     done
1134 }
1135
1136 # module_check <dracut module>
1137 # execute the check() function of module-setup.sh of <dracut module>
1138 # or the "check" script, if module-setup.sh is not found
1139 # "check $hostonly" is called
1140 module_check() {
1141     local _moddir=$(echo ${dracutbasedir}/modules.d/??${1})
1142     local _ret
1143     local _forced=0
1144     local _hostonly=$hostonly
1145     [ $# -eq 2 ] && _forced=$2
1146     [[ -d $_moddir ]] || return 1
1147     if [[ ! -f $_moddir/module-setup.sh ]]; then
1148         # if we do not have a check script, we are unconditionally included
1149         [[ -x $_moddir/check ]] || return 0
1150         [ $_forced -ne 0 ] && unset hostonly
1151         $_moddir/check $hostonly
1152         _ret=$?
1153     else
1154         unset check depends cmdline install installkernel
1155         check() { true; }
1156         . $_moddir/module-setup.sh
1157         is_func check || return 0
1158         [ $_forced -ne 0 ] && unset hostonly
1159         moddir=$_moddir check $hostonly
1160         _ret=$?
1161         unset check depends cmdline install installkernel
1162     fi
1163     hostonly=$_hostonly
1164     return $_ret
1165 }
1166
1167 # module_check_mount <dracut module>
1168 # execute the check() function of module-setup.sh of <dracut module>
1169 # or the "check" script, if module-setup.sh is not found
1170 # "mount_needs=1 check 0" is called
1171 module_check_mount() {
1172     local _moddir=$(echo ${dracutbasedir}/modules.d/??${1})
1173     local _ret
1174     mount_needs=1
1175     [[ -d $_moddir ]] || return 1
1176     if [[ ! -f $_moddir/module-setup.sh ]]; then
1177         # if we do not have a check script, we are unconditionally included
1178         [[ -x $_moddir/check ]] || return 0
1179         mount_needs=1 $_moddir/check 0
1180         _ret=$?
1181     else
1182         unset check depends cmdline install installkernel
1183         check() { false; }
1184         . $_moddir/module-setup.sh
1185         moddir=$_moddir check 0
1186         _ret=$?
1187         unset check depends cmdline install installkernel
1188     fi
1189     unset mount_needs
1190     return $_ret
1191 }
1192
1193 # module_depends <dracut module>
1194 # execute the depends() function of module-setup.sh of <dracut module>
1195 # or the "depends" script, if module-setup.sh is not found
1196 module_depends() {
1197     local _moddir=$(echo ${dracutbasedir}/modules.d/??${1})
1198     local _ret
1199     [[ -d $_moddir ]] || return 1
1200     if [[ ! -f $_moddir/module-setup.sh ]]; then
1201         # if we do not have a check script, we have no deps
1202         [[ -x $_moddir/check ]] || return 0
1203         $_moddir/check -d
1204         return $?
1205     else
1206         unset check depends cmdline install installkernel
1207         depends() { true; }
1208         . $_moddir/module-setup.sh
1209         moddir=$_moddir depends
1210         _ret=$?
1211         unset check depends cmdline install installkernel
1212         return $_ret
1213     fi
1214 }
1215
1216 # module_cmdline <dracut module>
1217 # execute the cmdline() function of module-setup.sh of <dracut module>
1218 # or the "cmdline" script, if module-setup.sh is not found
1219 module_cmdline() {
1220     local _moddir=$(echo ${dracutbasedir}/modules.d/??${1})
1221     local _ret
1222     [[ -d $_moddir ]] || return 1
1223     if [[ ! -f $_moddir/module-setup.sh ]]; then
1224         [[ -x $_moddir/cmdline ]] && . "$_moddir/cmdline"
1225         return $?
1226     else
1227         unset check depends cmdline install installkernel
1228         cmdline() { true; }
1229         . $_moddir/module-setup.sh
1230         moddir=$_moddir cmdline
1231         _ret=$?
1232         unset check depends cmdline install installkernel
1233         return $_ret
1234     fi
1235 }
1236
1237 # module_install <dracut module>
1238 # execute the install() function of module-setup.sh of <dracut module>
1239 # or the "install" script, if module-setup.sh is not found
1240 module_install() {
1241     local _moddir=$(echo ${dracutbasedir}/modules.d/??${1})
1242     local _ret
1243     [[ -d $_moddir ]] || return 1
1244     if [[ ! -f $_moddir/module-setup.sh ]]; then
1245         [[ -x $_moddir/install ]] && . "$_moddir/install"
1246         return $?
1247     else
1248         unset check depends cmdline install installkernel
1249         install() { true; }
1250         . $_moddir/module-setup.sh
1251         moddir=$_moddir install
1252         _ret=$?
1253         unset check depends cmdline install installkernel
1254         return $_ret
1255     fi
1256 }
1257
1258 # module_installkernel <dracut module>
1259 # execute the installkernel() function of module-setup.sh of <dracut module>
1260 # or the "installkernel" script, if module-setup.sh is not found
1261 module_installkernel() {
1262     local _moddir=$(echo ${dracutbasedir}/modules.d/??${1})
1263     local _ret
1264     [[ -d $_moddir ]] || return 1
1265     if [[ ! -f $_moddir/module-setup.sh ]]; then
1266         [[ -x $_moddir/installkernel ]] && . "$_moddir/installkernel"
1267         return $?
1268     else
1269         unset check depends cmdline install installkernel
1270         installkernel() { true; }
1271         . $_moddir/module-setup.sh
1272         moddir=$_moddir installkernel
1273         _ret=$?
1274         unset check depends cmdline install installkernel
1275         return $_ret
1276     fi
1277 }
1278
1279 # check_mount <dracut module>
1280 # check_mount checks, if a dracut module is needed for the given
1281 # device and filesystem types in "${host_fs_types[@]}"
1282 check_mount() {
1283     local _mod=$1
1284     local _moddir=$(echo ${dracutbasedir}/modules.d/??${1})
1285     local _ret
1286     local _moddep
1287
1288     [ "${#host_fs_types[*]}" -le 0 ] && return 1
1289
1290     # If we are already scheduled to be loaded, no need to check again.
1291     [[ " $mods_to_load " == *\ $_mod\ * ]] && return 0
1292     [[ " $mods_checked_as_dep " == *\ $_mod\ * ]] && return 1
1293
1294     # This should never happen, but...
1295     [[ -d $_moddir ]] || return 1
1296
1297     [[ $2 ]] || mods_checked_as_dep+=" $_mod "
1298
1299     if [[ " $omit_dracutmodules " == *\ $_mod\ * ]]; then
1300         return 1
1301     fi
1302
1303     if [[ " $dracutmodules $add_dracutmodules $force_add_dracutmodules" == *\ $_mod\ * ]]; then
1304         module_check_mount $_mod; ret=$?
1305
1306         # explicit module, so also accept ret=255
1307         [[ $ret = 0 || $ret = 255 ]] || return 1
1308     else
1309         # module not in our list
1310         if [[ $dracutmodules = all ]]; then
1311             # check, if we can and should install this module
1312             module_check_mount $_mod || return 1
1313         else
1314             # skip this module
1315             return 1
1316         fi
1317     fi
1318
1319
1320     for _moddep in $(module_depends $_mod); do
1321         # handle deps as if they were manually added
1322         [[ " $add_dracutmodules " == *\ $_moddep\ * ]] || \
1323             add_dracutmodules+=" $_moddep "
1324         [[ " $force_add_dracutmodules " == *\ $_moddep\ * ]] || \
1325             force_add_dracutmodules+=" $_moddep "
1326         # if a module we depend on fail, fail also
1327         if ! check_module $_moddep; then
1328             derror "dracut module '$_mod' depends on '$_moddep', which can't be installed"
1329             return 1
1330         fi
1331     done
1332
1333     [[ " $mods_to_load " == *\ $_mod\ * ]] || \
1334         mods_to_load+=" $_mod "
1335
1336     return 0
1337 }
1338
1339 # check_module <dracut module> [<use_as_dep>]
1340 # check if a dracut module is to be used in the initramfs process
1341 # if <use_as_dep> is set, then the process also keeps track
1342 # that the modules were checked for the dependency tracking process
1343 check_module() {
1344     local _mod=$1
1345     local _moddir=$(echo ${dracutbasedir}/modules.d/??${1})
1346     local _ret
1347     local _moddep
1348     # If we are already scheduled to be loaded, no need to check again.
1349     [[ " $mods_to_load " == *\ $_mod\ * ]] && return 0
1350     [[ " $mods_checked_as_dep " == *\ $_mod\ * ]] && return 1
1351
1352     # This should never happen, but...
1353     [[ -d $_moddir ]] || return 1
1354
1355     [[ $2 ]] || mods_checked_as_dep+=" $_mod "
1356
1357     if [[ " $omit_dracutmodules " == *\ $_mod\ * ]]; then
1358         dinfo "dracut module '$_mod' will not be installed, because it's in the list to be omitted!"
1359         return 1
1360     fi
1361
1362     if [[ " $dracutmodules $add_dracutmodules $force_add_dracutmodules" == *\ $_mod\ * ]]; then
1363         if [[ " $force_add_dracutmodules " == *\ $_mod\ * ]]; then
1364             module_check $_mod 1; ret=$?
1365         else
1366             module_check $_mod 0; ret=$?
1367         fi
1368         # explicit module, so also accept ret=255
1369         [[ $ret = 0 || $ret = 255 ]] || return 1
1370     else
1371         # module not in our list
1372         if [[ $dracutmodules = all ]]; then
1373             # check, if we can and should install this module
1374             module_check $_mod || return 1
1375         else
1376             # skip this module
1377             return 1
1378         fi
1379     fi
1380
1381     for _moddep in $(module_depends $_mod); do
1382         # handle deps as if they were manually added
1383         [[ " $add_dracutmodules " == *\ $_moddep\ * ]] || \
1384             add_dracutmodules+=" $_moddep "
1385         [[ " $force_add_dracutmodules " == *\ $_moddep\ * ]] || \
1386             force_add_dracutmodules+=" $_moddep "
1387         # if a module we depend on fail, fail also
1388         if ! check_module $_moddep; then
1389             derror "dracut module '$_mod' depends on '$_moddep', which can't be installed"
1390             return 1
1391         fi
1392     done
1393
1394     [[ " $mods_to_load " == *\ $_mod\ * ]] || \
1395         mods_to_load+=" $_mod "
1396
1397     return 0
1398 }
1399
1400 # for_each_module_dir <func>
1401 # execute "<func> <dracut module> 1"
1402 for_each_module_dir() {
1403     local _modcheck
1404     local _mod
1405     local _moddir
1406     local _func
1407     _func=$1
1408     for _moddir in "$dracutbasedir/modules.d"/[0-9][0-9]*; do
1409         [[ -d $_moddir ]] || continue;
1410         [[ -e $_moddir/install || -e $_moddir/installkernel || \
1411             -e $_moddir/module-setup.sh ]] || continue
1412         _mod=${_moddir##*/}; _mod=${_mod#[0-9][0-9]}
1413         $_func $_mod 1
1414     done
1415
1416     # Report any missing dracut modules, the user has specified
1417     _modcheck="$add_dracutmodules $force_add_dracutmodules"
1418     [[ $dracutmodules != all ]] && _modcheck="$m $dracutmodules"
1419     for _mod in $_modcheck; do
1420         [[ " $mods_to_load " == *\ $_mod\ * ]] && continue
1421         [[ " $omit_dracutmodules " == *\ $_mod\ * ]] && continue
1422         derror "dracut module '$_mod' cannot be found or installed."
1423     done
1424 }
1425
1426 # Install a single kernel module along with any firmware it may require.
1427 # $1 = full path to kernel module to install
1428 install_kmod_with_fw() {
1429     # no need to go further if the module is already installed
1430
1431     [[ -e "${initdir}/lib/modules/$kernel/${1##*/lib/modules/$kernel/}" ]] \
1432         && return 0
1433
1434     if [[ $DRACUT_KERNEL_LAZY_HASHDIR ]] && [[ -e "$DRACUT_KERNEL_LAZY_HASHDIR/${1##*/}" ]]; then
1435         read ret < "$DRACUT_KERNEL_LAZY_HASHDIR/${1##*/}"
1436         return $ret
1437     fi
1438
1439     if [[ $omit_drivers ]]; then
1440         local _kmod=${1##*/}
1441         _kmod=${_kmod%.ko}
1442         _kmod=${_kmod/-/_}
1443         if [[ "$_kmod" =~ $omit_drivers ]]; then
1444             dinfo "Omitting driver $_kmod"
1445             return 0
1446         fi
1447         if [[ "${1##*/lib/modules/$kernel/}" =~ $omit_drivers ]]; then
1448             dinfo "Omitting driver $_kmod"
1449             return 0
1450         fi
1451     fi
1452
1453     if [[ $silent_omit_drivers ]]; then
1454         local _kmod=${1##*/}
1455         _kmod=${_kmod%.ko}
1456         _kmod=${_kmod/-/_}
1457         [[ "$_kmod" =~ $silent_omit_drivers ]] && return 0
1458         [[ "${1##*/lib/modules/$kernel/}" =~ $silent_omit_drivers ]] && return 0
1459     fi
1460
1461     inst_simple "$1" "/lib/modules/$kernel/${1##*/lib/modules/$kernel/}"
1462     ret=$?
1463     [[ $DRACUT_KERNEL_LAZY_HASHDIR ]] && \
1464         [[ -d "$DRACUT_KERNEL_LAZY_HASHDIR" ]] && \
1465         echo $ret > "$DRACUT_KERNEL_LAZY_HASHDIR/${1##*/}"
1466     (($ret != 0)) && return $ret
1467
1468     local _modname=${1##*/} _fwdir _found _fw
1469     _modname=${_modname%.ko*}
1470     for _fw in $(modinfo -k $kernel -F firmware $1 2>/dev/null); do
1471         _found=''
1472         for _fwdir in $fw_dir; do
1473             if [[ -d $_fwdir && -f $_fwdir/$_fw ]]; then
1474                 inst_simple "$_fwdir/$_fw" "/lib/firmware/$_fw"
1475                 _found=yes
1476             fi
1477         done
1478         if [[ $_found != yes ]]; then
1479             if ! [[ -d $(echo /sys/module/${_modname//-/_}|{ read a b; echo $a; }) ]]; then
1480                 dinfo "Possible missing firmware \"${_fw}\" for kernel module" \
1481                     "\"${_modname}.ko\""
1482             else
1483                 dwarn "Possible missing firmware \"${_fw}\" for kernel module" \
1484                     "\"${_modname}.ko\""
1485             fi
1486         fi
1487     done
1488     return 0
1489 }
1490
1491 # Do something with all the dependencies of a kernel module.
1492 # Note that kernel modules depend on themselves using the technique we use
1493 # $1 = function to call for each dependency we find
1494 #      It will be passed the full path to the found kernel module
1495 # $2 = module to get dependencies for
1496 # rest of args = arguments to modprobe
1497 # _fderr specifies FD passed from surrounding scope
1498 for_each_kmod_dep() {
1499     local _func=$1 _kmod=$2 _cmd _modpath _options
1500     shift 2
1501     modprobe "$@" --ignore-install --show-depends $_kmod 2>&${_fderr} | (
1502         while read _cmd _modpath _options; do
1503             [[ $_cmd = insmod ]] || continue
1504             $_func ${_modpath} || exit $?
1505         done
1506     )
1507 }
1508
1509 dracut_kernel_post() {
1510     local _moddirname=${srcmods%%/lib/modules/*}
1511     local _pid
1512
1513     if [[ $DRACUT_KERNEL_LAZY_HASHDIR ]] && [[ -f "$DRACUT_KERNEL_LAZY_HASHDIR/lazylist" ]]; then
1514         xargs -r modprobe -a ${_moddirname:+-d ${_moddirname}/} \
1515             --ignore-install --show-depends --set-version $kernel \
1516             < "$DRACUT_KERNEL_LAZY_HASHDIR/lazylist" 2>/dev/null \
1517             | sort -u \
1518             | while read _cmd _modpath _options; do
1519             [[ $_cmd = insmod ]] || continue
1520             echo "$_modpath"
1521         done > "$DRACUT_KERNEL_LAZY_HASHDIR/lazylist.dep"
1522
1523         (
1524             if [[ $DRACUT_INSTALL ]] && [[ -z $_moddirname ]]; then
1525                 xargs -r $DRACUT_INSTALL ${initdir:+-D "$initdir"} -a < "$DRACUT_KERNEL_LAZY_HASHDIR/lazylist.dep"
1526             else
1527                 while read _modpath; do
1528                     local _destpath=$_modpath
1529                     [[ $_moddirname ]] && _destpath=${_destpath##$_moddirname/}
1530                     _destpath=${_destpath##*/lib/modules/$kernel/}
1531                     inst_simple "$_modpath" "/lib/modules/$kernel/${_destpath}" || exit $?
1532                 done < "$DRACUT_KERNEL_LAZY_HASHDIR/lazylist.dep"
1533             fi
1534         ) &
1535         _pid=$(jobs -p | while read a ; do printf ":$a";done)
1536         _pid=${_pid##*:}
1537
1538         if [[ $DRACUT_INSTALL ]]; then
1539             xargs -r modinfo -k $kernel -F firmware < "$DRACUT_KERNEL_LAZY_HASHDIR/lazylist.dep" \
1540                 | while read line; do
1541                 for _fwdir in $fw_dir; do
1542                     echo $_fwdir/$line;
1543                 done;
1544             done | xargs -r $DRACUT_INSTALL ${initdir:+-D "$initdir"} -a -o
1545         else
1546             for _fw in $(xargs -r modinfo -k $kernel -F firmware < "$DRACUT_KERNEL_LAZY_HASHDIR/lazylist.dep"); do
1547                 for _fwdir in $fw_dir; do
1548                     if [[ -d $_fwdir && -f $_fwdir/$_fw ]]; then
1549                         inst_simple "$_fwdir/$_fw" "/lib/firmware/$_fw"
1550                         break
1551                     fi
1552                 done
1553             done
1554         fi
1555
1556         wait $_pid
1557     fi
1558
1559     for _f in modules.builtin.bin modules.builtin modules.order; do
1560         [[ $srcmods/$_f ]] && inst_simple "$srcmods/$_f" "/lib/modules/$kernel/$_f"
1561     done
1562
1563     # generate module dependencies for the initrd
1564     if [[ -d $initdir/lib/modules/$kernel ]] && \
1565         ! depmod -a -b "$initdir" $kernel; then
1566         dfatal "\"depmod -a $kernel\" failed."
1567         exit 1
1568     fi
1569
1570     [[ $DRACUT_KERNEL_LAZY_HASHDIR ]] && rm -fr -- "$DRACUT_KERNEL_LAZY_HASHDIR"
1571 }
1572
1573 [[ "$kernel_current" ]] || export kernel_current=$(uname -r)
1574
1575 module_is_host_only() {
1576     local _mod=$1
1577     local _modenc a i _k _s _v _aliases
1578     _mod=${_mod##*/}
1579     _mod=${_mod%.ko}
1580     _modenc=${_mod//-/_}
1581
1582     [[ " $add_drivers " == *\ ${_mod}\ * ]] && return 0
1583
1584     # check if module is loaded
1585     [[ ${host_modules["$_modenc"]} ]] && return 0
1586
1587     [[ "$kernel_current" ]] || export kernel_current=$(uname -r)
1588
1589     if [[ "$kernel_current" != "$kernel" ]]; then
1590         # check if module is loadable on the current kernel
1591         # this covers the case, where a new module is introduced
1592         # or a module was renamed
1593         # or a module changed from builtin to a module
1594
1595         if [[ -d /lib/modules/$kernel_current ]]; then
1596             # if the modinfo can be parsed, but the module
1597             # is not loaded, then we can safely return 1
1598             modinfo -F filename "$_mod" &>/dev/null && return 1
1599         fi
1600
1601         _aliases=$(modinfo -k $kernel -F alias $_mod 2>/dev/null)
1602
1603         # if the module has no aliases, install it
1604         [[ $_aliases ]] || return 0
1605
1606         # finally check all modalias
1607         for a in $_aliases; do
1608             for i in "${!host_modalias[@]}"; do
1609                 [[ $i == $a ]]  && return 0
1610             done
1611         done
1612
1613     fi
1614
1615     return 1
1616 }
1617
1618 find_kernel_modules_by_path () {
1619     local _OLDIFS
1620
1621     [[ -f "$srcmods/modules.dep" ]] || return 0
1622
1623     _OLDIFS=$IFS
1624     IFS=:
1625     while read a rest; do
1626         [[ $a = */$1/* ]] || [[ $a = updates/* ]] || continue
1627         printf "%s\n" "$srcmods/$a"
1628     done < "$srcmods/modules.dep"
1629     IFS=$_OLDIFS
1630     return 0
1631 }
1632
1633 find_kernel_modules () {
1634     find_kernel_modules_by_path  drivers
1635 }
1636
1637 # instmods [-c [-s]] <kernel module> [<kernel module> ... ]
1638 # instmods [-c [-s]] <kernel subsystem>
1639 # install kernel modules along with all their dependencies.
1640 # <kernel subsystem> can be e.g. "=block" or "=drivers/usb/storage"
1641 instmods() {
1642     [[ $no_kernel = yes ]] && return
1643     # called [sub]functions inherit _fderr
1644     local _fderr=9
1645     local _check=no
1646     local _silent=no
1647     if [[ $1 = '-c' ]]; then
1648         _check=yes
1649         shift
1650     fi
1651
1652     if [[ $1 = '-s' ]]; then
1653         _silent=yes
1654         shift
1655     fi
1656
1657     function inst1mod() {
1658         local _ret=0 _mod="$1"
1659         case $_mod in
1660             =*)
1661                 ( [[ "$_mpargs" ]] && echo $_mpargs
1662                     find_kernel_modules_by_path "${_mod#=}" ) \
1663                         | instmods
1664                 ((_ret+=$?))
1665                 ;;
1666             --*) _mpargs+=" $_mod" ;;
1667             *)
1668                 _mod=${_mod##*/}
1669                 # if we are already installed, skip this module and go on
1670                 # to the next one.
1671                 if [[ $DRACUT_KERNEL_LAZY_HASHDIR ]] && \
1672                     [[ -f "$DRACUT_KERNEL_LAZY_HASHDIR/${_mod%.ko}.ko" ]]; then
1673                     read _ret <"$DRACUT_KERNEL_LAZY_HASHDIR/${_mod%.ko}.ko"
1674                     return $_ret
1675                 fi
1676
1677                 _mod=${_mod/-/_}
1678                 if [[ $omit_drivers ]] && [[ "$_mod" =~ $omit_drivers ]]; then
1679                     dinfo "Omitting driver ${_mod##$srcmods}"
1680                     return 0
1681                 fi
1682
1683                 # If we are building a host-specific initramfs and this
1684                 # module is not already loaded, move on to the next one.
1685                 [[ $hostonly ]] \
1686                     && ! module_is_host_only "$_mod" \
1687                     && return 0
1688
1689                 if [[ "$_check" = "yes" ]] || ! [[ $DRACUT_KERNEL_LAZY_HASHDIR ]]; then
1690                     # We use '-d' option in modprobe only if modules prefix path
1691                     # differs from default '/'.  This allows us to use dracut with
1692                     # old version of modprobe which doesn't have '-d' option.
1693                     local _moddirname=${srcmods%%/lib/modules/*}
1694                     [[ -n ${_moddirname} ]] && _moddirname="-d ${_moddirname}/"
1695
1696                     # ok, load the module, all its dependencies, and any firmware
1697                     # it may require
1698                     for_each_kmod_dep install_kmod_with_fw $_mod \
1699                         --set-version $kernel ${_moddirname} $_mpargs
1700                     ((_ret+=$?))
1701                 else
1702                     [[ $DRACUT_KERNEL_LAZY_HASHDIR ]] && \
1703                         echo $_mod >> "$DRACUT_KERNEL_LAZY_HASHDIR/lazylist"
1704                 fi
1705                 ;;
1706         esac
1707         return $_ret
1708     }
1709
1710     function instmods_1() {
1711         local _mod _mpargs
1712         if (($# == 0)); then  # filenames from stdin
1713             while read _mod; do
1714                 inst1mod "${_mod%.ko*}" || {
1715                     if [[ "$_check" == "yes" ]]; then
1716                         [[ "$_silent" == "no" ]] && dfatal "Failed to install module $_mod"
1717                         return 1
1718                     fi
1719                 }
1720             done
1721         fi
1722         while (($# > 0)); do  # filenames as arguments
1723             inst1mod ${1%.ko*} || {
1724                 if [[ "$_check" == "yes" ]]; then
1725                     [[ "$_silent" == "no" ]] && dfatal "Failed to install module $1"
1726                     return 1
1727                 fi
1728             }
1729             shift
1730         done
1731         return 0
1732     }
1733
1734     local _ret _filter_not_found='FATAL: Module .* not found.'
1735     # Capture all stderr from modprobe to _fderr. We could use {var}>...
1736     # redirections, but that would make dracut require bash4 at least.
1737     eval "( instmods_1 \"\$@\" ) ${_fderr}>&1" \
1738         | while read line; do [[ "$line" =~ $_filter_not_found ]] || echo $line;done | derror
1739     _ret=$?
1740     return $_ret
1741 }
1742 # get_cpu_vendor
1743 # Only two values are returned: AMD or Intel
1744 get_cpu_vendor ()
1745 {
1746     if grep -qE AMD /proc/cpuinfo; then
1747         printf "AMD"
1748     fi
1749     if grep -qE Intel /proc/cpuinfo; then
1750         printf "Intel"
1751     fi
1752 }
1753
1754 # get_host_ucode
1755 # Get the hosts' ucode file based on the /proc/cpuinfo
1756 get_ucode_file ()
1757 {
1758     local family=`grep -E "cpu family" /proc/cpuinfo | head -1 | sed s/.*:\ //`
1759     local model=`grep -E "model" /proc/cpuinfo |grep -v name | head -1 | sed s/.*:\ //`
1760     local stepping=`grep -E "stepping" /proc/cpuinfo | head -1 | sed s/.*:\ //`
1761
1762     if [[ "$(get_cpu_vendor)" == "AMD" ]]; then
1763         # If family greater or equal than 0x15
1764         if [[ $family -ge 21 ]]; then
1765             printf "microcode_amd_fam15h.bin"
1766         else
1767             printf "microcode_amd.bin"
1768         fi
1769     fi
1770     if [[ "$(get_cpu_vendor)" == "Intel" ]]; then
1771         # The /proc/cpuinfo are in decimal.
1772         printf "%02x-%02x-%02x" ${family} ${model} ${stepping}
1773     fi
1774 }
1775
1776 # Not every device in /dev/mapper should be examined.
1777 # If it is an LVM device, touch only devices which have /dev/VG/LV symlink.
1778 lvm_internal_dev() {
1779     local dev_dm_dir=/sys/dev/block/$1/dm
1780     [[ ! -f $dev_dm_dir/uuid || $(<$dev_dm_dir/uuid) != LVM-* ]] && return 1 # Not an LVM device
1781     local DM_VG_NAME DM_LV_NAME DM_LV_LAYER
1782     eval $(dmsetup splitname --nameprefixes --noheadings --rows "$(<$dev_dm_dir/name)" 2>/dev/null)
1783     [[ ${DM_VG_NAME} ]] && [[ ${DM_LV_NAME} ]] || return 0 # Better skip this!
1784     [[ ${DM_LV_LAYER} ]] || [[ ! -L /dev/${DM_VG_NAME}/${DM_LV_NAME} ]]
1785 }
1786