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