dracut-init.sh

   1 #!/bin/bash
   2 #
   3 # functions used only by dracut and dracut modules
   4 #
   5 # Copyright 2005-2009 Red Hat, Inc.  All rights reserved.
   6 #
   7 # This program is free software; you can redistribute it and/or modify
   8 # it under the terms of the GNU General Public License as published by
   9 # the Free Software Foundation; either version 2 of the License, or
  10 # (at your option) any later version.
  11 #
  12 # This program is distributed in the hope that it will be useful,
  13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 # GNU General Public License for more details.
  16 #
  17 # You should have received a copy of the GNU General Public License
  18 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19 #
  20 export LC_MESSAGES=C
  21
  22 if [[ "$EUID" = "0" ]]; then
  23     export DRACUT_CP="cp --reflink=auto --sparse=auto --preserve=mode,timestamps,xattr,links -dfr"
  24 else
  25     export DRACUT_CP="cp --reflink=auto --sparse=auto --preserve=mode,timestamps,links -dfr"
  26 fi
  27
  28 # is_func <command>
  29 # Check whether $1 is a function.
  30 is_func() {
  31     [[ "$(type -t "$1")" = "function" ]]
  32 }
  33
  34 if ! [[ $dracutbasedir ]]; then
  35     dracutbasedir=${BASH_SOURCE[0]%/*}
  36     [[ $dracutbasedir = dracut-functions* ]] && dracutbasedir="."
  37     [[ $dracutbasedir ]] || dracutbasedir="."
  38     dracutbasedir="$(readlink -f $dracutbasedir)"
  39 fi
  40
  41 if ! is_func dinfo >/dev/null 2>&1; then
  42     . "$dracutbasedir/dracut-logger.sh"
  43     dlog_init
  44 fi
  45
  46 if ! [[ $initdir ]]; then
  47     dfatal "initdir not set"
  48     exit 1
  49 fi
  50
  51 if ! [[ -d $initdir ]]; then
  52     mkdir -p "$initdir"
  53 fi
  54
  55 if ! [[ $kernel ]]; then
  56     kernel=$(uname -r)
  57     export kernel
  58 fi
  59
  60 srcmods="/lib/modules/$kernel/"
  61
  62 [[ $drivers_dir ]] && {
  63     if ! command -v kmod &>/dev/null && vercmp "$(modprobe --version | cut -d' ' -f3)" lt 3.7; then
  64         dfatal 'To use --kmoddir option module-init-tools >= 3.7 is required.'
  65         exit 1
  66     fi
  67     srcmods="$drivers_dir"
  68 }
  69 export srcmods
  70
  71 [[ $DRACUT_FIRMWARE_PATH ]] || export DRACUT_FIRMWARE_PATH="/lib/firmware/updates:/lib/firmware:/lib/firmware/$kernel"
  72
  73 # export standard hookdirs
  74 [[ $hookdirs ]] || {
  75     hookdirs="cmdline pre-udev pre-trigger netroot "
  76     hookdirs+="initqueue initqueue/settled initqueue/online initqueue/finished initqueue/timeout "
  77     hookdirs+="pre-mount pre-pivot cleanup mount "
  78     hookdirs+="emergency shutdown-emergency pre-shutdown shutdown "
  79     export hookdirs
  80 }
  81
  82 . $dracutbasedir/dracut-functions.sh
  83
  84 # Detect lib paths
  85 if ! [[ $libdirs ]] ; then
  86     if [[ "$(ldd /bin/sh)" == */lib64/* ]] &>/dev/null \
  87         && [[ -d /lib64 ]]; then
  88         libdirs+=" /lib64"
  89         [[ -d /usr/lib64 ]] && libdirs+=" /usr/lib64"
  90     else
  91         libdirs+=" /lib"
  92         [[ -d /usr/lib ]] && libdirs+=" /usr/lib"
  93     fi
  94
  95     libdirs+=" $(ldconfig_paths)"
  96
  97     export libdirs
  98 fi
  99
 100 # helper function for check() in module-setup.sh
 101 # to check for required installed binaries
 102 # issues a standardized warning message
 103 require_binaries() {
 104     local _module_name="${moddir##*/}"
 105     local _ret=0
 106
 107     if [[ "$1" = "-m" ]]; then
 108         _module_name="$2"
 109         shift 2
 110     fi
 111
 112     for cmd in "$@"; do
 113         if ! find_binary "$cmd" &>/dev/null; then
 114             dinfo "dracut module '${_module_name#[0-9][0-9]}' will not be installed, because command '$cmd' could not be found!"
 115             ((_ret++))
 116         fi
 117     done
 118     return $_ret
 119 }
 120
 121 require_any_binary() {
 122     local _module_name="${moddir##*/}"
 123     local _ret=1
 124
 125     if [[ "$1" = "-m" ]]; then
 126         _module_name="$2"
 127         shift 2
 128     fi
 129
 130     for cmd in "$@"; do
 131         if find_binary "$cmd" &>/dev/null; then
 132             _ret=0
 133             break
 134         fi
 135     done
 136
 137     if (( $_ret != 0 )); then
 138         dinfo "$_module_name: Could not find any command of '$@'!"
 139         return 1
 140     fi
 141
 142     return 0
 143 }
 144
 145 dracut_need_initqueue() {
 146     >"$initdir/lib/dracut/need-initqueue"
 147 }
 148
 149 dracut_module_included() {
 150     [[ " $mods_to_load $modules_loaded " == *\ $*\ * ]]
 151 }
 152
 153 dracut_no_switch_root() {
 154     >"$initdir/lib/dracut/no-switch-root"
 155 }
 156
 157 dracut_module_path() {
 158     echo ${dracutbasedir}/modules.d/??${1} | { read a b; echo "$a"; }
 159 }
 160
 161 if ! [[ $DRACUT_INSTALL ]]; then
 162     DRACUT_INSTALL=$(find_binary dracut-install)
 163 fi
 164
 165 if ! [[ $DRACUT_INSTALL ]] && [[ -x $dracutbasedir/dracut-install ]]; then
 166     DRACUT_INSTALL=$dracutbasedir/dracut-install
 167 elif ! [[ $DRACUT_INSTALL ]] && [[ -x $dracutbasedir/install/dracut-install ]]; then
 168     DRACUT_INSTALL=$dracutbasedir/install/dracut-install
 169 fi
 170
 171 if ! [[ -x $DRACUT_INSTALL ]]; then
 172     dfatal "dracut-install not found!"
 173     exit 10
 174 fi
 175
 176 if [[ $hostonly == "-h" ]]; then
 177     if ! [[ $DRACUT_KERNEL_MODALIASES ]] || ! [[ -f "$DRACUT_KERNEL_MODALIASES" ]]; then
 178         export DRACUT_KERNEL_MODALIASES="${DRACUT_TMPDIR}/modaliases"
 179         $DRACUT_INSTALL ${srcmods:+--kerneldir "$srcmods"} --modalias > "$DRACUT_KERNEL_MODALIASES"
 180     fi
 181 fi
 182
 183 [[ $DRACUT_RESOLVE_LAZY ]] || export DRACUT_RESOLVE_DEPS=1
 184 inst_dir() {
 185     [[ -e ${initdir}/"$1" ]] && return 0  # already there
 186     $DRACUT_INSTALL ${initdir:+-D "$initdir"} -d "$@"
 187     (($? != 0)) && derror FAILED: $DRACUT_INSTALL ${initdir:+-D "$initdir"} -d "$@" || :
 188 }
 189
 190 inst() {
 191     local _hostonly_install
 192     if [[ "$1" == "-H" ]]; then
 193         _hostonly_install="-H"
 194         shift
 195     fi
 196     [[ -e ${initdir}/"${2:-$1}" ]] && return 0  # already there
 197     $DRACUT_INSTALL ${initdir:+-D "$initdir"} ${loginstall:+-L "$loginstall"} ${DRACUT_RESOLVE_DEPS:+-l} ${DRACUT_FIPS_MODE:+-f} ${_hostonly_install:+-H} "$@"
 198     (($? != 0)) && derror FAILED: $DRACUT_INSTALL ${initdir:+-D "$initdir"} ${loginstall:+-L "$loginstall"} ${DRACUT_RESOLVE_DEPS:+-l} ${DRACUT_FIPS_MODE:+-f} ${_hostonly_install:+-H} "$@" || :
 199 }
 200
 201 inst_simple() {
 202     local _hostonly_install
 203     if [[ "$1" == "-H" ]]; then
 204         _hostonly_install="-H"
 205         shift
 206     fi
 207     [[ -e ${initdir}/"${2:-$1}" ]] && return 0  # already there
 208     [[ -e $1 ]] || return 1  # no source
 209     $DRACUT_INSTALL ${initdir:+-D "$initdir"} ${loginstall:+-L "$loginstall"} ${_hostonly_install:+-H} "$@"
 210     (($? != 0)) && derror FAILED: $DRACUT_INSTALL ${initdir:+-D "$initdir"} ${loginstall:+-L "$loginstall"} ${_hostonly_install:+-H} "$@" || :
 211 }
 212
 213 inst_symlink() {
 214     local _hostonly_install
 215     if [[ "$1" == "-H" ]]; then
 216         _hostonly_install="-H"
 217         shift
 218     fi
 219     [[ -e ${initdir}/"${2:-$1}" ]] && return 0  # already there
 220     [[ -L $1 ]] || return 1
 221     $DRACUT_INSTALL ${initdir:+-D "$initdir"} ${loginstall:+-L "$loginstall"} ${DRACUT_RESOLVE_DEPS:+-l}  ${DRACUT_FIPS_MODE:+-f} ${_hostonly_install:+-H} "$@"
 222     (($? != 0)) && derror FAILED: $DRACUT_INSTALL ${initdir:+-D "$initdir"} ${loginstall:+-L "$loginstall"} ${DRACUT_RESOLVE_DEPS:+-l}  ${DRACUT_FIPS_MODE:+-f} ${_hostonly_install:+-H} "$@" || :
 223 }
 224
 225 inst_multiple() {
 226     local _ret
 227     $DRACUT_INSTALL ${initdir:+-D "$initdir"} -a ${loginstall:+-L "$loginstall"} ${DRACUT_RESOLVE_DEPS:+-l}  ${DRACUT_FIPS_MODE:+-f} "$@"
 228     _ret=$?
 229     (($_ret != 0)) && derror FAILED: $DRACUT_INSTALL ${initdir:+-D "$initdir"} -a ${loginstall:+-L "$loginstall"} ${DRACUT_RESOLVE_DEPS:+-l}  ${DRACUT_FIPS_MODE:+-f} ${_hostonly_install:+-H} "$@" || :
 230     return $_ret
 231 }
 232
 233 dracut_install() {
 234     inst_multiple "$@"
 235 }
 236
 237 dracut_instmods() {
 238     local _silent=0;
 239     local i;
 240     [[ $no_kernel = yes ]] && return
 241     for i in "$@"; do
 242         [[ $i == "--silent" ]] && _silent=1
 243     done
 244
 245     $DRACUT_INSTALL \
 246         ${initdir:+-D "$initdir"} ${loginstall:+-L "$loginstall"} ${hostonly:+-H} ${omit_drivers:+-N "$omit_drivers"} ${srcmods:+--kerneldir "$srcmods"} -m "$@"
 247     (($? != 0)) && (($_silent == 0)) && derror FAILED: $DRACUT_INSTALL ${initdir:+-D "$initdir"} ${loginstall:+-L "$loginstall"} ${hostonly:+-H} ${omit_drivers:+-N "$omit_drivers"} ${srcmods:+--kerneldir "$srcmods"} -m "$@" || :
 248 }
 249
 250 inst_library() {
 251     local _hostonly_install
 252     if [[ "$1" == "-H" ]]; then
 253         _hostonly_install="-H"
 254         shift
 255     fi
 256     [[ -e ${initdir}/"${2:-$1}" ]] && return 0  # already there
 257     [[ -e $1 ]] || return 1  # no source
 258     $DRACUT_INSTALL ${initdir:+-D "$initdir"} ${loginstall:+-L "$loginstall"} ${DRACUT_RESOLVE_DEPS:+-l}  ${DRACUT_FIPS_MODE:+-f} ${_hostonly_install:+-H} "$@"
 259     (($? != 0)) && derror FAILED: $DRACUT_INSTALL ${initdir:+-D "$initdir"} ${loginstall:+-L "$loginstall"} ${DRACUT_RESOLVE_DEPS:+-l}  ${DRACUT_FIPS_MODE:+-f} ${_hostonly_install:+-H} "$@" || :
 260 }
 261
 262 inst_binary() {
 263     $DRACUT_INSTALL ${initdir:+-D "$initdir"} ${loginstall:+-L "$loginstall"} ${DRACUT_RESOLVE_DEPS:+-l}  ${DRACUT_FIPS_MODE:+-f} "$@"
 264     (($? != 0)) && derror FAILED: $DRACUT_INSTALL ${initdir:+-D "$initdir"} ${loginstall:+-L "$loginstall"} ${DRACUT_RESOLVE_DEPS:+-l}  ${DRACUT_FIPS_MODE:+-f} "$@" || :
 265 }
 266
 267 inst_script() {
 268     $DRACUT_INSTALL ${initdir:+-D "$initdir"} ${loginstall:+-L "$loginstall"} ${DRACUT_RESOLVE_DEPS:+-l} ${DRACUT_FIPS_MODE:+-f} "$@"
 269     (($? != 0)) && derror FAILED: $DRACUT_INSTALL ${initdir:+-D "$initdir"} ${loginstall:+-L "$loginstall"} ${DRACUT_RESOLVE_DEPS:+-l}  ${DRACUT_FIPS_MODE:+-f} "$@" || :
 270 }
 271
 272 inst_fsck_help() {
 273     local _helper="/run/dracut/fsck/fsck_help_$1.txt"
 274     $DRACUT_INSTALL ${initdir:+-D "$initdir"} ${loginstall:+-L "$loginstall"} ${DRACUT_RESOLVE_DEPS:+-l} ${DRACUT_FIPS_MODE:+-f} "$2" $_helper
 275     (($? != 0)) && derror $DRACUT_INSTALL ${initdir:+-D "$initdir"} ${loginstall:+-L "$loginstall"} ${DRACUT_RESOLVE_DEPS:+-l}  ${DRACUT_FIPS_MODE:+-f} "$2" $_helper || :
 276 }
 277
 278 # Use with form hostonly="$(optional_hostonly)" inst_xxxx <args>
 279 # If hosotnly mode is set to "strict", hostonly restrictions will still
 280 # be applied, else will ignore hostonly mode and try to install all
 281 # given modules.
 282 optional_hostonly() {
 283     if [[ $hostonly_mode = "strict" ]]; then
 284         printf -- "$hostonly"
 285     else
 286         printf ""
 287     fi
 288 }
 289
 290 mark_hostonly() {
 291     for i in "$@"; do
 292         echo "$i" >> "$initdir/lib/dracut/hostonly-files"
 293     done
 294 }
 295
 296 # find symlinks linked to given library file
 297 # $1 = library file
 298 # Function searches for symlinks by stripping version numbers appended to
 299 # library filename, checks if it points to the same target and finally
 300 # prints the list of symlinks to stdout.
 301 #
 302 # Example:
 303 # rev_lib_symlinks libfoo.so.8.1
 304 # output: libfoo.so.8 libfoo.so
 305 # (Only if libfoo.so.8 and libfoo.so exists on host system.)
 306 rev_lib_symlinks() {
 307     [[ ! $1 ]] && return 0
 308
 309     local fn="$1" orig="$(readlink -f "$1")" links=''
 310
 311     [[ ${fn} == *.so.* ]] || return 1
 312
 313     until [[ ${fn##*.} == so ]]; do
 314         fn="${fn%.*}"
 315         [[ -L ${fn} && $(readlink -f "${fn}") == ${orig} ]] && links+=" ${fn}"
 316     done
 317
 318     echo "${links}"
 319 }
 320
 321 # attempt to install any programs specified in a udev rule
 322 inst_rule_programs() {
 323     local _prog _bin
 324
 325     for _prog in $(sed -nr 's/.*PROGRAM==?"([^ "]+).*/\1/p' "$1"); do
 326         _bin=""
 327         if [ -x ${udevdir}/$_prog ]; then
 328             _bin=${udevdir}/$_prog
 329         elif [[ "${_prog/\$env\{/}" == "$_prog" ]]; then
 330             _bin=$(find_binary "$_prog") || {
 331                 dinfo "Skipping program $_prog using in udev rule ${1##*/} as it cannot be found"
 332                 continue;
 333             }
 334         fi
 335
 336         [[ $_bin ]] && inst_binary "$_bin"
 337     done
 338     for _prog in $(sed -nr 's/.*RUN[+=]=?"([^ "]+).*/\1/p' "$1"); do
 339         _bin=""
 340         if [ -x ${udevdir}/$_prog ]; then
 341             _bin=${udevdir}/$_prog
 342         elif [[ "${_prog/\$env\{/}" == "$_prog" ]] && [[ "${_prog}" != "/sbin/initqueue" ]]; then
 343             _bin=$(find_binary "$_prog") || {
 344                 dinfo "Skipping program $_prog using in udev rule ${1##*/} as it cannot be found"
 345                 continue;
 346             }
 347         fi
 348
 349         [[ $_bin ]] && inst_binary "$_bin"
 350     done
 351     for _prog in $(sed -nr 's/.*IMPORT\{program\}==?"([^ "]+).*/\1/p' "$1"); do
 352         _bin=""
 353         if [ -x ${udevdir}/$_prog ]; then
 354             _bin=${udevdir}/$_prog
 355         elif [[ "${_prog/\$env\{/}" == "$_prog" ]]; then
 356             _bin=$(find_binary "$_prog") || {
 357                 dinfo "Skipping program $_prog using in udev rule ${1##*/} as it cannot be found"
 358                 continue;
 359             }
 360         fi
 361
 362         [[ $_bin ]] && dracut_install "$_bin"
 363     done
 364 }
 365
 366 # attempt to install any programs specified in a udev rule
 367 inst_rule_group_owner() {
 368     local i
 369
 370     for i in $(sed -nr 's/.*OWNER=?"([^ "]+).*/\1/p' "$1"); do
 371         if ! grep -Eq "^$i:" "$initdir/etc/passwd" 2>/dev/null; then
 372             grep -E "^$i:" /etc/passwd 2>/dev/null >> "$initdir/etc/passwd"
 373         fi
 374     done
 375     for i in $(sed -nr 's/.*GROUP=?"([^ "]+).*/\1/p' "$1"); do
 376         if ! grep -Eq "^$i:" "$initdir/etc/group" 2>/dev/null; then
 377             grep -E "^$i:" /etc/group 2>/dev/null >> "$initdir/etc/group"
 378         fi
 379     done
 380 }
 381
 382 inst_rule_initqueue() {
 383     if grep -q -F initqueue "$1"; then
 384         dracut_need_initqueue
 385     fi
 386 }
 387
 388 # udev rules always get installed in the same place, so
 389 # create a function to install them to make life simpler.
 390 inst_rules() {
 391     local _target=/etc/udev/rules.d _rule _found
 392
 393     inst_dir "${udevdir}/rules.d"
 394     inst_dir "$_target"
 395     for _rule in "$@"; do
 396         if [ "${_rule#/}" = "$_rule" ]; then
 397             for r in ${udevdir}/rules.d ${hostonly:+/etc/udev/rules.d}; do
 398                 [[ -e $r/$_rule ]] || continue
 399                 _found="$r/$_rule"
 400                 inst_rule_programs "$_found"
 401                 inst_rule_group_owner "$_found"
 402                 inst_rule_initqueue "$_found"
 403                 inst_simple "$_found"
 404             done
 405         fi
 406         for r in '' $dracutbasedir/rules.d/; do
 407             # skip rules without an absolute path
 408             [[ "${r}$_rule" != /* ]] && continue
 409             [[ -f ${r}$_rule ]] || continue
 410             _found="${r}$_rule"
 411             inst_rule_programs "$_found"
 412             inst_rule_group_owner "$_found"
 413             inst_rule_initqueue "$_found"
 414             inst_simple "$_found" "$_target/${_found##*/}"
 415         done
 416         [[ $_found ]] || dinfo "Skipping udev rule: $_rule"
 417     done
 418 }
 419
 420 inst_rules_wildcard() {
 421     local _target=/etc/udev/rules.d _rule _found
 422
 423     inst_dir "${udevdir}/rules.d"
 424     inst_dir "$_target"
 425     for _rule in ${udevdir}/rules.d/$1 ${dracutbasedir}/rules.d/$1 ; do
 426         [[ -e $_rule ]] || continue
 427         inst_rule_programs "$_rule"
 428         inst_rule_group_owner "$_rule"
 429         inst_rule_initqueue "$_rule"
 430         inst_simple "$_rule"
 431         _found=$_rule
 432     done
 433     if [[ -n ${hostonly} ]] ; then
 434         for _rule in ${_target}/$1 ; do
 435             [[ -f $_rule ]] || continue
 436             inst_rule_programs "$_rule"
 437             inst_rule_group_owner "$_rule"
 438             inst_rule_initqueue "$_rule"
 439             inst_simple "$_rule"
 440             _found=$_rule
 441         done
 442     fi
 443     [[ $_found ]] || dinfo "Skipping udev rule: $_rule"
 444 }
 445
 446 prepare_udev_rules() {
 447     [ -z "$UDEVVERSION" ] && export UDEVVERSION=$(udevadm --version)
 448
 449     for f in "$@"; do
 450         f="${initdir}/etc/udev/rules.d/$f"
 451         [ -e "$f" ] || continue
 452         while read line || [ -n "$line" ]; do
 453             if [ "${line%%IMPORT PATH_ID}" != "$line" ]; then
 454                 if [ $UDEVVERSION -ge 174 ]; then
 455                     printf '%sIMPORT{builtin}="path_id"\n' "${line%%IMPORT PATH_ID}"
 456                 else
 457                     printf '%sIMPORT{program}="path_id %%p"\n' "${line%%IMPORT PATH_ID}"
 458                 fi
 459             elif [ "${line%%IMPORT BLKID}" != "$line" ]; then
 460                 if [ $UDEVVERSION -ge 176 ]; then
 461                     printf '%sIMPORT{builtin}="blkid"\n' "${line%%IMPORT BLKID}"
 462                 else
 463                     printf '%sIMPORT{program}="/sbin/blkid -o udev -p $tempnode"\n' "${line%%IMPORT BLKID}"
 464                 fi
 465             else
 466                 echo "$line"
 467             fi
 468         done < "${f}" > "${f}.new"
 469         mv "${f}.new" "$f"
 470     done
 471 }
 472
 473 # install function specialized for hooks
 474 # $1 = type of hook, $2 = hook priority (lower runs first), $3 = hook
 475 # All hooks should be POSIX/SuS compliant, they will be sourced by init.
 476 inst_hook() {
 477     if ! [[ -f $3 ]]; then
 478         dfatal "Cannot install a hook ($3) that does not exist."
 479         dfatal "Aborting initrd creation."
 480         exit 1
 481     elif ! [[ "$hookdirs" == *$1* ]]; then
 482         dfatal "No such hook type $1. Aborting initrd creation."
 483         exit 1
 484     fi
 485     inst_simple "$3" "/lib/dracut/hooks/${1}/${2}-${3##*/}"
 486 }
 487
 488 # install any of listed files
 489 #
 490 # If first argument is '-d' and second some destination path, first accessible
 491 # source is installed into this path, otherwise it will installed in the same
 492 # path as source.  If none of listed files was installed, function return 1.
 493 # On first successful installation it returns with 0 status.
 494 #
 495 # Example:
 496 #
 497 # inst_any -d /bin/foo /bin/bar /bin/baz
 498 #
 499 # Lets assume that /bin/baz exists, so it will be installed as /bin/foo in
 500 # initramfs.
 501 inst_any() {
 502     local to f
 503
 504     [[ $1 = '-d' ]] && to="$2" && shift 2
 505
 506     for f in "$@"; do
 507         [[ -e $f ]] || continue
 508         [[ $to ]] && inst "$f" "$to" && return 0
 509         inst "$f" && return 0
 510     done
 511
 512     return 1
 513 }
 514
 515
 516 # inst_libdir_file [-n <pattern>] <file> [<file>...]
 517 # Install a <file> located on a lib directory to the initramfs image
 518 # -n <pattern> install matching files
 519 inst_libdir_file() {
 520     local _files
 521     if [[ "$1" == "-n" ]]; then
 522         local _pattern=$2
 523         shift 2
 524         for _dir in $libdirs; do
 525             for _i in "$@"; do
 526                 for _f in "$_dir"/$_i; do
 527                     [[ "$_f" =~ $_pattern ]] || continue
 528                     [[ -e "$_f" ]] && _files+="$_f "
 529                 done
 530             done
 531         done
 532     else
 533         for _dir in $libdirs; do
 534             for _i in "$@"; do
 535                 for _f in "$_dir"/$_i; do
 536                     [[ -e "$_f" ]] && _files+="$_f "
 537                 done
 538             done
 539         done
 540     fi
 541     [[ $_files ]] && inst_multiple $_files
 542 }
 543
 544
 545 # install function decompressing the target and handling symlinks
 546 # $@ = list of compressed (gz or bz2) files or symlinks pointing to such files
 547 #
 548 # Function install targets in the same paths inside overlay but decompressed
 549 # and without extensions (.gz, .bz2).
 550 inst_decompress() {
 551     local _src _cmd
 552
 553     for _src in $@
 554     do
 555         case ${_src} in
 556             *.gz) _cmd='gzip -f -d' ;;
 557             *.bz2) _cmd='bzip2 -d' ;;
 558             *) return 1 ;;
 559         esac
 560         inst_simple ${_src}
 561         # Decompress with chosen tool.  We assume that tool changes name e.g.
 562         # from 'name.gz' to 'name'.
 563         ${_cmd} "${initdir}${_src}"
 564     done
 565 }
 566
 567 # It's similar to above, but if file is not compressed, performs standard
 568 # install.
 569 # $@ = list of files
 570 inst_opt_decompress() {
 571     local _src
 572
 573     for _src in $@; do
 574         inst_decompress "${_src}" || inst "${_src}"
 575     done
 576 }
 577
 578 # module_check <dracut module> [<forced>] [<module path>]
 579 # execute the check() function of module-setup.sh of <dracut module>
 580 # or the "check" script, if module-setup.sh is not found
 581 # "check $hostonly" is called
 582 module_check() {
 583     local _moddir=$3
 584     local _ret
 585     local _forced=0
 586     local _hostonly=$hostonly
 587     [[ -z $_moddir ]] && _moddir=$(dracut_module_path "$1")
 588     [ $# -eq 2 ] && _forced=$2
 589     [[ -d $_moddir ]] || return 1
 590     if [[ ! -f $_moddir/module-setup.sh ]]; then
 591         # if we do not have a check script, we are unconditionally included
 592         [[ -x $_moddir/check ]] || return 0
 593         [ $_forced -ne 0 ] && unset hostonly
 594         $_moddir/check $hostonly
 595         _ret=$?
 596     else
 597         unset check depends cmdline install installkernel
 598         check() { true; }
 599         . $_moddir/module-setup.sh
 600         is_func check || return 0
 601         [ $_forced -ne 0 ] && unset hostonly
 602         moddir=$_moddir check $hostonly
 603         _ret=$?
 604         unset check depends cmdline install installkernel
 605     fi
 606     hostonly=$_hostonly
 607     return $_ret
 608 }
 609
 610 # module_check_mount <dracut module> [<module path>]
 611 # execute the check() function of module-setup.sh of <dracut module>
 612 # or the "check" script, if module-setup.sh is not found
 613 # "mount_needs=1 check 0" is called
 614 module_check_mount() {
 615     local _moddir=$2
 616     local _ret
 617     mount_needs=1
 618     [[ -z $_moddir ]] && _moddir=$(dracut_module_path "$1")
 619     [[ -d $_moddir ]] || return 1
 620     if [[ ! -f $_moddir/module-setup.sh ]]; then
 621         # if we do not have a check script, we are unconditionally included
 622         [[ -x $_moddir/check ]] || return 0
 623         mount_needs=1 $_moddir/check 0
 624         _ret=$?
 625     else
 626         unset check depends cmdline install installkernel
 627         check() { false; }
 628         . $_moddir/module-setup.sh
 629         moddir=$_moddir check 0
 630         _ret=$?
 631         unset check depends cmdline install installkernel
 632     fi
 633     unset mount_needs
 634     return $_ret
 635 }
 636
 637 # module_depends <dracut module> [<module path>]
 638 # execute the depends() function of module-setup.sh of <dracut module>
 639 # or the "depends" script, if module-setup.sh is not found
 640 module_depends() {
 641     local _moddir=$2
 642     local _ret
 643     [[ -z $_moddir ]] && _moddir=$(dracut_module_path "$1")
 644     [[ -d $_moddir ]] || return 1
 645     if [[ ! -f $_moddir/module-setup.sh ]]; then
 646         # if we do not have a check script, we have no deps
 647         [[ -x $_moddir/check ]] || return 0
 648         $_moddir/check -d
 649         return $?
 650     else
 651         unset check depends cmdline install installkernel
 652         depends() { true; }
 653         . $_moddir/module-setup.sh
 654         moddir=$_moddir depends
 655         _ret=$?
 656         unset check depends cmdline install installkernel
 657         return $_ret
 658     fi
 659 }
 660
 661 # module_cmdline <dracut module> [<module path>]
 662 # execute the cmdline() function of module-setup.sh of <dracut module>
 663 # or the "cmdline" script, if module-setup.sh is not found
 664 module_cmdline() {
 665     local _moddir=$2
 666     local _ret
 667     [[ -z $_moddir ]] && _moddir=$(dracut_module_path "$1")
 668     [[ -d $_moddir ]] || return 1
 669     if [[ ! -f $_moddir/module-setup.sh ]]; then
 670         [[ -x $_moddir/cmdline ]] && . "$_moddir/cmdline"
 671         return $?
 672     else
 673         unset check depends cmdline install installkernel
 674         cmdline() { true; }
 675         . $_moddir/module-setup.sh
 676         moddir=$_moddir cmdline
 677         _ret=$?
 678         unset check depends cmdline install installkernel
 679         return $_ret
 680     fi
 681 }
 682
 683 # module_install <dracut module> [<module path>]
 684 # execute the install() function of module-setup.sh of <dracut module>
 685 # or the "install" script, if module-setup.sh is not found
 686 module_install() {
 687     local _moddir=$2
 688     local _ret
 689     [[ -z $_moddir ]] && _moddir=$(dracut_module_path "$1")
 690     [[ -d $_moddir ]] || return 1
 691     if [[ ! -f $_moddir/module-setup.sh ]]; then
 692         [[ -x $_moddir/install ]] && . "$_moddir/install"
 693         return $?
 694     else
 695         unset check depends cmdline install installkernel
 696         install() { true; }
 697         . $_moddir/module-setup.sh
 698         moddir=$_moddir install
 699         _ret=$?
 700         unset check depends cmdline install installkernel
 701         return $_ret
 702     fi
 703 }
 704
 705 # module_installkernel <dracut module> [<module path>]
 706 # execute the installkernel() function of module-setup.sh of <dracut module>
 707 # or the "installkernel" script, if module-setup.sh is not found
 708 module_installkernel() {
 709     local _moddir=$2
 710     local _ret
 711     [[ -z $_moddir ]] && _moddir=$(dracut_module_path "$1")
 712     [[ -d $_moddir ]] || return 1
 713     if [[ ! -f $_moddir/module-setup.sh ]]; then
 714         [[ -x $_moddir/installkernel ]] && . "$_moddir/installkernel"
 715         return $?
 716     else
 717         unset check depends cmdline install installkernel
 718         installkernel() { true; }
 719         . $_moddir/module-setup.sh
 720         moddir=$_moddir installkernel
 721         _ret=$?
 722         unset check depends cmdline install installkernel
 723         return $_ret
 724     fi
 725 }
 726
 727 # check_mount <dracut module> [<use_as_dep>] [<module path>]
 728 # check_mount checks, if a dracut module is needed for the given
 729 # device and filesystem types in "${host_fs_types[@]}"
 730 check_mount() {
 731     local _mod=$1
 732     local _moddir=$3
 733     local _ret
 734     local _moddep
 735
 736     [[ -z $_moddir ]] && _moddir=$(dracut_module_path "$1")
 737     [ "${#host_fs_types[@]}" -le 0 ] && return 1
 738
 739     # If we are already scheduled to be loaded, no need to check again.
 740     [[ " $mods_to_load " == *\ $_mod\ * ]] && return 0
 741     [[ " $mods_checked_as_dep " == *\ $_mod\ * ]] && return 1
 742
 743     # This should never happen, but...
 744     [[ -d $_moddir ]] || return 1
 745
 746     [[ $2 ]] || mods_checked_as_dep+=" $_mod "
 747
 748     if [[ " $omit_dracutmodules " == *\ $_mod\ * ]]; then
 749         return 1
 750     fi
 751
 752     if [[ " $dracutmodules $add_dracutmodules $force_add_dracutmodules" == *\ $_mod\ * ]]; then
 753         module_check_mount $_mod $_moddir; ret=$?
 754
 755         # explicit module, so also accept ret=255
 756         [[ $ret = 0 || $ret = 255 ]] || return 1
 757     else
 758         # module not in our list
 759         if [[ $dracutmodules = all ]]; then
 760             # check, if we can and should install this module
 761             module_check_mount $_mod $_moddir || return 1
 762         else
 763             # skip this module
 764             return 1
 765         fi
 766     fi
 767
 768     for _moddep in $(module_depends $_mod $_moddir); do
 769         # handle deps as if they were manually added
 770         [[ " $dracutmodules " == *\ $_mod\ * ]] \
 771             && [[ " $dracutmodules " != *\ $_moddep\ * ]] \
 772             && dracutmodules+=" $_moddep "
 773         [[ " $add_dracutmodules " == *\ $_mod\ * ]] \
 774             && [[ " $add_dracutmodules " != *\ $_moddep\ * ]] \
 775             && add_dracutmodules+=" $_moddep "
 776         [[ " $force_add_dracutmodules " == *\ $_mod\ * ]] \
 777             && [[ " $force_add_dracutmodules " != *\ $_moddep\ * ]] \
 778             && force_add_dracutmodules+=" $_moddep "
 779         # if a module we depend on fail, fail also
 780         if ! check_module $_moddep; then
 781             derror "dracut module '$_mod' depends on '$_moddep', which can't be installed"
 782             return 1
 783         fi
 784     done
 785
 786     [[ " $mods_to_load " == *\ $_mod\ * ]] || \
 787         mods_to_load+=" $_mod "
 788
 789     return 0
 790 }
 791
 792 # check_module <dracut module> [<use_as_dep>] [<module path>]
 793 # check if a dracut module is to be used in the initramfs process
 794 # if <use_as_dep> is set, then the process also keeps track
 795 # that the modules were checked for the dependency tracking process
 796 check_module() {
 797     local _mod=$1
 798     local _moddir=$3
 799     local _ret
 800     local _moddep
 801
 802     [[ -z $_moddir ]] && _moddir=$(dracut_module_path "$1")
 803     # If we are already scheduled to be loaded, no need to check again.
 804     [[ " $mods_to_load " == *\ $_mod\ * ]] && return 0
 805     [[ " $mods_checked_as_dep " == *\ $_mod\ * ]] && return 1
 806
 807     # This should never happen, but...
 808     [[ -d $_moddir ]] || return 1
 809
 810     [[ $2 ]] || mods_checked_as_dep+=" $_mod "
 811
 812     if [[ " $omit_dracutmodules " == *\ $_mod\ * ]]; then
 813         dinfo "dracut module '$_mod' will not be installed, because it's in the list to be omitted!"
 814         return 1
 815     fi
 816
 817     if [[ " $dracutmodules $add_dracutmodules $force_add_dracutmodules" == *\ $_mod\ * ]]; then
 818         if [[ " $dracutmodules $force_add_dracutmodules " == *\ $_mod\ * ]]; then
 819             module_check $_mod 1 $_moddir; ret=$?
 820         else
 821             module_check $_mod 0 $_moddir; ret=$?
 822         fi
 823         # explicit module, so also accept ret=255
 824         [[ $ret = 0 || $ret = 255 ]] || return 1
 825     else
 826         # module not in our list
 827         if [[ $dracutmodules = all ]]; then
 828             # check, if we can and should install this module
 829             module_check $_mod 0 $_moddir; ret=$?
 830             if [[ $ret != 0 ]]; then
 831                 [[ $2 ]] && return 1
 832                 [[ $ret != 255 ]] && return 1
 833             fi
 834         else
 835             # skip this module
 836             return 1
 837         fi
 838     fi
 839
 840     for _moddep in $(module_depends $_mod $_moddir); do
 841         # handle deps as if they were manually added
 842         [[ " $dracutmodules " == *\ $_mod\ * ]] \
 843             && [[ " $dracutmodules " != *\ $_moddep\ * ]] \
 844             && dracutmodules+=" $_moddep "
 845         [[ " $add_dracutmodules " == *\ $_mod\ * ]] \
 846             && [[ " $add_dracutmodules " != *\ $_moddep\ * ]] \
 847             && add_dracutmodules+=" $_moddep "
 848         [[ " $force_add_dracutmodules " == *\ $_mod\ * ]] \
 849             && [[ " $force_add_dracutmodules " != *\ $_moddep\ * ]] \
 850             && force_add_dracutmodules+=" $_moddep "
 851         # if a module we depend on fail, fail also
 852         if ! check_module $_moddep; then
 853             derror "dracut module '$_mod' depends on '$_moddep', which can't be installed"
 854             return 1
 855         fi
 856     done
 857
 858     [[ " $mods_to_load " == *\ $_mod\ * ]] || \
 859         mods_to_load+=" $_mod "
 860
 861     return 0
 862 }
 863
 864 # for_each_module_dir <func>
 865 # execute "<func> <dracut module> 1 <module path>"
 866 for_each_module_dir() {
 867     local _modcheck
 868     local _mod
 869     local _moddir
 870     local _func
 871     _func=$1
 872     for _moddir in "$dracutbasedir/modules.d"/[0-9][0-9]*; do
 873         [[ -d $_moddir ]] || continue;
 874         [[ -e $_moddir/install || -e $_moddir/installkernel || \
 875             -e $_moddir/module-setup.sh ]] || continue
 876         _mod=${_moddir##*/}; _mod=${_mod#[0-9][0-9]}
 877         $_func $_mod 1 $_moddir
 878     done
 879
 880     # Report any missing dracut modules, the user has specified
 881     _modcheck="$add_dracutmodules $force_add_dracutmodules"
 882     [[ $dracutmodules != all ]] && _modcheck="$_modcheck $dracutmodules"
 883     for _mod in $_modcheck; do
 884         [[ " $mods_to_load " == *\ $_mod\ * ]] && continue
 885
 886         [[ " $force_add_dracutmodules " != *\ $_mod\ * ]] \
 887             && [[ " $dracutmodules " != *\ $_mod\ * ]] \
 888             && [[ " $omit_dracutmodules " == *\ $_mod\ * ]] \
 889             && continue
 890
 891         derror "dracut module '$_mod' cannot be found or installed."
 892         [[ " $force_add_dracutmodules " == *\ $_mod\ * ]] && exit 1
 893         [[ " $dracutmodules " == *\ $_mod\ * ]] && exit 1
 894         [[ " $add_dracutmodules " == *\ $_mod\ * ]] && exit 1
 895     done
 896 }
 897
 898 # Install a single kernel module along with any firmware it may require.
 899 # $1 = full path to kernel module to install
 900 install_kmod_with_fw() {
 901     # no need to go further if the module is already installed
 902
 903     [[ -e "${initdir}/lib/modules/$kernel/${1##*/lib/modules/$kernel/}" ]] \
 904         && return 0
 905
 906     if [[ $omit_drivers ]]; then
 907         local _kmod=${1##*/}
 908         _kmod=${_kmod%.ko*}
 909         _kmod=${_kmod/-/_}
 910         if [[ "$_kmod" =~ $omit_drivers ]]; then
 911             dinfo "Omitting driver $_kmod"
 912             return 0
 913         fi
 914         if [[ "${1##*/lib/modules/$kernel/}" =~ $omit_drivers ]]; then
 915             dinfo "Omitting driver $_kmod"
 916             return 0
 917         fi
 918     fi
 919
 920     if [[ $silent_omit_drivers ]]; then
 921         local _kmod=${1##*/}
 922         _kmod=${_kmod%.ko*}
 923         _kmod=${_kmod/-/_}
 924         [[ "$_kmod" =~ $silent_omit_drivers ]] && return 0
 925         [[ "${1##*/lib/modules/$kernel/}" =~ $silent_omit_drivers ]] && return 0
 926     fi
 927
 928     inst_simple "$1" "/lib/modules/$kernel/${1##*/lib/modules/$kernel/}"
 929     ret=$?
 930     (($ret != 0)) && return $ret
 931
 932     local _modname=${1##*/} _fwdir _found _fw
 933     _modname=${_modname%.ko*}
 934     for _fw in $(modinfo -k $kernel -F firmware $1 2>/dev/null); do
 935         _found=''
 936         for _fwdir in $fw_dir; do
 937             [[ -d $_fwdir ]] || continue
 938             if [[ -f $_fwdir/$_fw ]]; then
 939                 inst_simple "$_fwdir/$_fw" "/lib/firmware/$_fw"
 940             elif [[ -f $_fwdir/$_fw.xz ]]; then
 941                 inst_simple "$_fwdir/$_fw.xz" "/lib/firmware/$_fw.xz"
 942                 rm -f "${initdir}/lib/firmware/$_fw"
 943                 unxz -f "${initdir}/lib/firmware/$_fw.xz"
 944             else
 945                 continue
 946             fi
 947             _found=yes
 948         done
 949         if [[ $_found != yes ]]; then
 950             if ! [[ -d $(echo /sys/module/${_modname//-/_}|{ read a b; echo $a; }) ]]; then
 951                 dinfo "Possible missing firmware \"${_fw}\" for kernel module" \
 952                     "\"${_modname}.ko\""
 953             else
 954                 dwarn "Possible missing firmware \"${_fw}\" for kernel module" \
 955                     "\"${_modname}.ko\""
 956             fi
 957         fi
 958     done
 959     return 0
 960 }
 961
 962 # Do something with all the dependencies of a kernel module.
 963 # Note that kernel modules depend on themselves using the technique we use
 964 # $1 = function to call for each dependency we find
 965 #      It will be passed the full path to the found kernel module
 966 # $2 = module to get dependencies for
 967 # rest of args = arguments to modprobe
 968 # _fderr specifies FD passed from surrounding scope
 969 for_each_kmod_dep() {
 970     local _func=$1 _kmod=$2 _cmd _modpath _options
 971     shift 2
 972     modprobe "$@" --ignore-install --show-depends $_kmod 2>&${_fderr} | (
 973         while read _cmd _modpath _options || [ -n "$_cmd" ]; do
 974             [[ $_cmd = insmod ]] || continue
 975             $_func ${_modpath} || exit $?
 976         done
 977     )
 978 }
 979
 980 dracut_kernel_post() {
 981     for _f in modules.builtin.bin modules.builtin modules.order; do
 982         [[ -e $srcmods/$_f ]] && inst_simple "$srcmods/$_f" "/lib/modules/$kernel/$_f"
 983     done
 984
 985     # generate module dependencies for the initrd
 986     if [[ -d $initdir/lib/modules/$kernel ]] && \
 987         ! depmod -a -b "$initdir" $kernel; then
 988         dfatal "\"depmod -a $kernel\" failed."
 989         exit 1
 990     fi
 991
 992 }
 993
 994 instmods() {
 995     # instmods [-c [-s]] <kernel module> [<kernel module> ... ]
 996     # instmods [-c [-s]] <kernel subsystem>
 997     # install kernel modules along with all their dependencies.
 998     # <kernel subsystem> can be e.g. "=block" or "=drivers/usb/storage"
 999     # -c check
1000     # -s silent
1001     local _optional="-o"
1002     local _silent
1003     local _ret
1004
1005     [[ $no_kernel = yes ]] && return
1006
1007     if [[ $1 = '-c' ]]; then
1008         unset _optional
1009         shift
1010     fi
1011     if [[ $1 = '-s' ]]; then
1012         _silent=1
1013         shift
1014     fi
1015
1016     if (($# == 0)); then
1017         read -r -d '' -a args
1018         set -- "${args[@]}"
1019     fi
1020
1021     if (($# == 0)); then
1022         return 0
1023     fi
1024
1025     $DRACUT_INSTALL \
1026         ${initdir:+-D "$initdir"} \
1027         ${loginstall:+-L "$loginstall"} \
1028         ${hostonly:+-H} \
1029         ${omit_drivers:+-N "$omit_drivers"} \
1030         ${srcmods:+--kerneldir "$srcmods"} \
1031         ${_optional:+-o} \
1032         ${_silent:+--silent} \
1033         -m "$@"
1034     _ret=$?
1035
1036     if (($_ret != 0)) && [[ -z "$_silent" ]]; then
1037         derror "FAILED: " \
1038             $DRACUT_INSTALL \
1039                 ${initdir:+-D "$initdir"} \
1040                 ${loginstall:+-L "$loginstall"} \
1041                 ${hostonly:+-H} \
1042                 ${omit_drivers:+-N "$omit_drivers"} \
1043                 ${srcmods:+--kerneldir "$srcmods"} \
1044                 ${_optional:+-o} \
1045                 ${_silent:+--silent} \
1046                 -m "$@"
1047     fi
1048
1049     [[ "$optional" ]] && return 0
1050     return $_ret
1051 }
1052
1053 if [[ "$(ln --help)" == *--relative* ]]; then
1054     ln_r() {
1055         ln -sfnr "${initdir}/$1" "${initdir}/$2"
1056     }
1057 else
1058     ln_r() {
1059         local _source=$1
1060         local _dest=$2
1061         [[ -d "${_dest%/*}" ]] && _dest=$(readlink -f "${_dest%/*}")/${_dest##*/}
1062         ln -sfn -- "$(convert_abs_rel "${_dest}" "${_source}")" "${initdir}/${_dest}"
1063     }
1064 fi