#!/bin/bash

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#

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# functions used only by dracut and dracut modules

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#

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# Copyright 2005-2009 Red Hat, Inc. All rights reserved.

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#

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# This program is free software; you can redistribute it and/or modify

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# it under the terms of the GNU General Public License as published by

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# the Free Software Foundation; either version 2 of the License, or

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# (at your option) any later version.

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#

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# This program is distributed in the hope that it will be useful,

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# but WITHOUT ANY WARRANTY; without even the implied warranty of

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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

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# GNU General Public License for more details.

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#

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# You should have received a copy of the GNU General Public License

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# along with this program. If not, see <http://www.gnu.org/licenses/>.

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#

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export LC_MESSAGES=C

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if [[ "$EUID" = "0" ]]; then

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export DRACUT_CP="cp --reflink=auto --sparse=auto --preserve=mode,timestamps,xattr,links -dfr"

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else

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export DRACUT_CP="cp --reflink=auto --sparse=auto --preserve=mode,timestamps,links -dfr"

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fi

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# is_func <command>

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# Check whether $1 is a function.

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is_func() {

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[[ "$(type -t "$1")" = "function" ]]

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}

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if ! [[ $dracutbasedir ]]; then

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dracutbasedir=${BASH_SOURCE[0]%/*}

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[[ $dracutbasedir = dracut-functions* ]] && dracutbasedir="."

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[[ $dracutbasedir ]] || dracutbasedir="."

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dracutbasedir="$(readlink -f $dracutbasedir)"

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fi

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if ! is_func dinfo >/dev/null 2>&1; then

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. "$dracutbasedir/dracut-logger.sh"

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dlog_init

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fi

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if ! [[ $initdir ]]; then

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dfatal "initdir not set"

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exit 1

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fi

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if ! [[ -d $initdir ]]; then

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mkdir -p "$initdir"

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fi

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if ! [[ $kernel ]]; then

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kernel=$(uname -r)

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export kernel

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fi

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srcmods="/lib/modules/$kernel/"

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[[ $drivers_dir ]] && {

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if ! command -v kmod &>/dev/null && vercmp "$(modprobe --version | cut -d' ' -f3)" lt 3.7; then

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dfatal 'To use --kmoddir option module-init-tools >= 3.7 is required.'

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exit 1

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fi

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srcmods="$drivers_dir"

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}

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export srcmods

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[[ $DRACUT_FIRMWARE_PATH ]] || export DRACUT_FIRMWARE_PATH="/lib/firmware/updates:/lib/firmware:/lib/firmware/$kernel"

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# export standard hookdirs

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[[ $hookdirs ]] || {

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hookdirs="cmdline pre-udev pre-trigger netroot "

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hookdirs+="initqueue initqueue/settled initqueue/online initqueue/finished initqueue/timeout "

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hookdirs+="pre-mount pre-pivot cleanup mount "

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hookdirs+="emergency shutdown-emergency pre-shutdown shutdown "

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export hookdirs

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}

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DRACUT_LDD=${DRACUT_LDD:-ldd}

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DRACUT_TESTBIN=${DRACUT_TESTBIN:-/bin/sh}

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DRACUT_LDCONFIG=${DRACUT_LDCONFIG:-ldconfig}

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. $dracutbasedir/dracut-functions.sh

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# Detect lib paths

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if ! [[ $libdirs ]] ; then

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if [[ "$(ldd /bin/sh)" == */lib64/* ]] &>/dev/null \

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&& [[ -d /lib64 ]]; then

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libdirs+=" /lib64"

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[[ -d /usr/lib64 ]] && libdirs+=" /usr/lib64"

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else

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libdirs+=" /lib"

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[[ -d /usr/lib ]] && libdirs+=" /usr/lib"

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fi

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libdirs+=" $(ldconfig_paths)"

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export libdirs

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fi

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# helper function for check() in module-setup.sh

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# to check for required installed binaries

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# issues a standardized warning message

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require_binaries() {

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local _module_name="${moddir##*/}"

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local _ret=0

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if [[ "$1" = "-m" ]]; then

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_module_name="$2"

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shift 2

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fi

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for cmd in "$@"; do

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if ! find_binary "$cmd" &>/dev/null; then

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dinfo "dracut module '${_module_name#[0-9][0-9]}' will not be installed, because command '$cmd' could not be found!"

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((_ret++))

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fi

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done

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return $_ret

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}

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require_any_binary() {

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local _module_name="${moddir##*/}"

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local _ret=1

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if [[ "$1" = "-m" ]]; then

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_module_name="$2"

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shift 2

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fi

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for cmd in "$@"; do

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if find_binary "$cmd" &>/dev/null; then

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_ret=0

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break

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fi

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done

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if (( $_ret != 0 )); then

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dinfo "$_module_name: Could not find any command of '$@'!"

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return 1

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fi

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return 0

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}

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dracut_need_initqueue() {

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>"$initdir/lib/dracut/need-initqueue"

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}

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dracut_module_included() {

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[[ " $mods_to_load $modules_loaded " == *\ $*\ * ]]

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}

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dracut_no_switch_root() {

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>"$initdir/lib/dracut/no-switch-root"

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}

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dracut_module_path() {

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echo ${dracutbasedir}/modules.d/??${1} | { read a b; echo "$a"; }

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}

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if ! [[ $DRACUT_INSTALL ]]; then

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DRACUT_INSTALL=$(find_binary dracut-install)

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fi

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if ! [[ $DRACUT_INSTALL ]] && [[ -x $dracutbasedir/dracut-install ]]; then

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DRACUT_INSTALL=$dracutbasedir/dracut-install

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elif ! [[ $DRACUT_INSTALL ]] && [[ -x $dracutbasedir/install/dracut-install ]]; then

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DRACUT_INSTALL=$dracutbasedir/install/dracut-install

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fi

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if ! [[ -x $DRACUT_INSTALL ]]; then

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dfatal "dracut-install not found!"

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exit 10

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fi

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if [[ $hostonly == "-h" ]]; then

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if ! [[ $DRACUT_KERNEL_MODALIASES ]] || ! [[ -f "$DRACUT_KERNEL_MODALIASES" ]]; then

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export DRACUT_KERNEL_MODALIASES="${DRACUT_TMPDIR}/modaliases"

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$DRACUT_INSTALL ${srcmods:+--kerneldir "$srcmods"} --modalias > "$DRACUT_KERNEL_MODALIASES"

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fi

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fi

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[[ $DRACUT_RESOLVE_LAZY ]] || export DRACUT_RESOLVE_DEPS=1

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inst_dir() {

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[[ -e ${initdir}/"$1" ]] && return 0 # already there

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$DRACUT_INSTALL ${initdir:+-D "$initdir"} -d "$@"

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(($? != 0)) && derror FAILED: $DRACUT_INSTALL ${initdir:+-D "$initdir"} -d "$@" || :

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}

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inst() {

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local _hostonly_install

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if [[ "$1" == "-H" ]]; then

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_hostonly_install="-H"

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shift

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fi

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[[ -e ${initdir}/"${2:-$1}" ]] && return 0 # already there

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$DRACUT_INSTALL ${initdir:+-D "$initdir"} ${loginstall:+-L "$loginstall"} ${DRACUT_RESOLVE_DEPS:+-l} ${DRACUT_FIPS_MODE:+-f} ${_hostonly_install:+-H} "$@"

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(($? != 0)) && derror FAILED: $DRACUT_INSTALL ${initdir:+-D "$initdir"} ${loginstall:+-L "$loginstall"} ${DRACUT_RESOLVE_DEPS:+-l} ${DRACUT_FIPS_MODE:+-f} ${_hostonly_install:+-H} "$@" || :

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}

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inst_simple() {

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local _hostonly_install

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if [[ "$1" == "-H" ]]; then

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_hostonly_install="-H"

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shift

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fi

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[[ -e ${initdir}/"${2:-$1}" ]] && return 0 # already there

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[[ -e $1 ]] || return 1 # no source

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$DRACUT_INSTALL ${initdir:+-D "$initdir"} ${loginstall:+-L "$loginstall"} ${_hostonly_install:+-H} "$@"

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(($? != 0)) && derror FAILED: $DRACUT_INSTALL ${initdir:+-D "$initdir"} ${loginstall:+-L "$loginstall"} ${_hostonly_install:+-H} "$@" || :

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}

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inst_symlink() {

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local _hostonly_install

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if [[ "$1" == "-H" ]]; then

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_hostonly_install="-H"

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shift

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fi

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[[ -e ${initdir}/"${2:-$1}" ]] && return 0 # already there

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[[ -L $1 ]] || return 1

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$DRACUT_INSTALL ${initdir:+-D "$initdir"} ${loginstall:+-L "$loginstall"} ${DRACUT_RESOLVE_DEPS:+-l} ${DRACUT_FIPS_MODE:+-f} ${_hostonly_install:+-H} "$@"

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(($? != 0)) && derror FAILED: $DRACUT_INSTALL ${initdir:+-D "$initdir"} ${loginstall:+-L "$loginstall"} ${DRACUT_RESOLVE_DEPS:+-l} ${DRACUT_FIPS_MODE:+-f} ${_hostonly_install:+-H} "$@" || :

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}

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inst_multiple() {

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local _ret

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$DRACUT_INSTALL ${initdir:+-D "$initdir"} -a ${loginstall:+-L "$loginstall"} ${DRACUT_RESOLVE_DEPS:+-l} ${DRACUT_FIPS_MODE:+-f} "$@"

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_ret=$?

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(($_ret != 0)) && derror FAILED: $DRACUT_INSTALL ${initdir:+-D "$initdir"} -a ${loginstall:+-L "$loginstall"} ${DRACUT_RESOLVE_DEPS:+-l} ${DRACUT_FIPS_MODE:+-f} ${_hostonly_install:+-H} "$@" || :

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return $_ret

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}

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dracut_install() {

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inst_multiple "$@"

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}

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dracut_instmods() {

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local _silent=0;

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local i;

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[[ $no_kernel = yes ]] && return

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for i in "$@"; do

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[[ $i == "--silent" ]] && _silent=1

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done

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$DRACUT_INSTALL \

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${initdir:+-D "$initdir"} ${loginstall:+-L "$loginstall"} ${hostonly:+-H} ${omit_drivers:+-N "$omit_drivers"} ${srcmods:+--kerneldir "$srcmods"} -m "$@"

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(($? != 0)) && (($_silent == 0)) && derror FAILED: $DRACUT_INSTALL ${initdir:+-D "$initdir"} ${loginstall:+-L "$loginstall"} ${hostonly:+-H} ${omit_drivers:+-N "$omit_drivers"} ${srcmods:+--kerneldir "$srcmods"} -m "$@" || :

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}

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inst_library() {

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local _hostonly_install

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if [[ "$1" == "-H" ]]; then

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_hostonly_install="-H"

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shift

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fi

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[[ -e ${initdir}/"${2:-$1}" ]] && return 0 # already there

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[[ -e $1 ]] || return 1 # no source

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$DRACUT_INSTALL ${initdir:+-D "$initdir"} ${loginstall:+-L "$loginstall"} ${DRACUT_RESOLVE_DEPS:+-l} ${DRACUT_FIPS_MODE:+-f} ${_hostonly_install:+-H} "$@"

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(($? != 0)) && derror FAILED: $DRACUT_INSTALL ${initdir:+-D "$initdir"} ${loginstall:+-L "$loginstall"} ${DRACUT_RESOLVE_DEPS:+-l} ${DRACUT_FIPS_MODE:+-f} ${_hostonly_install:+-H} "$@" || :

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}

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inst_binary() {

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$DRACUT_INSTALL ${initdir:+-D "$initdir"} ${loginstall:+-L "$loginstall"} ${DRACUT_RESOLVE_DEPS:+-l} ${DRACUT_FIPS_MODE:+-f} "$@"

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(($? != 0)) && derror FAILED: $DRACUT_INSTALL ${initdir:+-D "$initdir"} ${loginstall:+-L "$loginstall"} ${DRACUT_RESOLVE_DEPS:+-l} ${DRACUT_FIPS_MODE:+-f} "$@" || :

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}

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inst_script() {

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$DRACUT_INSTALL ${initdir:+-D "$initdir"} ${loginstall:+-L "$loginstall"} ${DRACUT_RESOLVE_DEPS:+-l} ${DRACUT_FIPS_MODE:+-f} "$@"

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(($? != 0)) && derror FAILED: $DRACUT_INSTALL ${initdir:+-D "$initdir"} ${loginstall:+-L "$loginstall"} ${DRACUT_RESOLVE_DEPS:+-l} ${DRACUT_FIPS_MODE:+-f} "$@" || :

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}

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inst_fsck_help() {

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local _helper="/run/dracut/fsck/fsck_help_$1.txt"

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$DRACUT_INSTALL ${initdir:+-D "$initdir"} ${loginstall:+-L "$loginstall"} ${DRACUT_RESOLVE_DEPS:+-l} ${DRACUT_FIPS_MODE:+-f} "$2" $_helper

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(($? != 0)) && derror $DRACUT_INSTALL ${initdir:+-D "$initdir"} ${loginstall:+-L "$loginstall"} ${DRACUT_RESOLVE_DEPS:+-l} ${DRACUT_FIPS_MODE:+-f} "$2" $_helper || :

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}

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# Use with form hostonly="$(optional_hostonly)" inst_xxxx <args>

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# If hosotnly mode is set to "strict", hostonly restrictions will still

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# be applied, else will ignore hostonly mode and try to install all

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# given modules.

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optional_hostonly() {

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if [[ $hostonly_mode = "strict" ]]; then

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printf -- "$hostonly"

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else

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printf ""

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fi

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}

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mark_hostonly() {

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for i in "$@"; do

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echo "$i" >> "$initdir/lib/dracut/hostonly-files"

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done

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}

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# find symlinks linked to given library file

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# $1 = library file

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# Function searches for symlinks by stripping version numbers appended to

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# library filename, checks if it points to the same target and finally

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# prints the list of symlinks to stdout.

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#

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# Example:

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# rev_lib_symlinks libfoo.so.8.1

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# output: libfoo.so.8 libfoo.so

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# (Only if libfoo.so.8 and libfoo.so exists on host system.)

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rev_lib_symlinks() {

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[[ ! $1 ]] && return 0

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local fn="$1" orig="$(readlink -f "$1")" links=''

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[[ ${fn} == *.so.* ]] || return 1

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until [[ ${fn##*.} == so ]]; do

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fn="${fn%.*}"

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[[ -L ${fn} && $(readlink -f "${fn}") == ${orig} ]] && links+=" ${fn}"

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done

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echo "${links}"

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}

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# attempt to install any programs specified in a udev rule

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inst_rule_programs() {

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local _prog _bin

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for _prog in $(sed -nr 's/.*PROGRAM==?"([^ "]+).*/\1/p' "$1"); do

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_bin=""

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if [ -x ${udevdir}/$_prog ]; then

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_bin=${udevdir}/$_prog

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elif [[ "${_prog/\$env\{/}" == "$_prog" ]]; then

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_bin=$(find_binary "$_prog") || {

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dinfo "Skipping program $_prog using in udev rule ${1##*/} as it cannot be found"

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continue;

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}

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fi

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[[ $_bin ]] && inst_binary "$_bin"

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done

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for _prog in $(sed -nr 's/.*RUN[+=]=?"([^ "]+).*/\1/p' "$1"); do

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_bin=""

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if [ -x ${udevdir}/$_prog ]; then

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_bin=${udevdir}/$_prog

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elif [[ "${_prog/\$env\{/}" == "$_prog" ]] && [[ "${_prog}" != "/sbin/initqueue" ]]; then

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_bin=$(find_binary "$_prog") || {

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dinfo "Skipping program $_prog using in udev rule ${1##*/} as it cannot be found"

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continue;

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}

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fi

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[[ $_bin ]] && inst_binary "$_bin"

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done

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for _prog in $(sed -nr 's/.*IMPORT\{program\}==?"([^ "]+).*/\1/p' "$1"); do

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_bin=""

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if [ -x ${udevdir}/$_prog ]; then

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_bin=${udevdir}/$_prog

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elif [[ "${_prog/\$env\{/}" == "$_prog" ]]; then

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_bin=$(find_binary "$_prog") || {

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dinfo "Skipping program $_prog using in udev rule ${1##*/} as it cannot be found"

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continue;

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}

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fi

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[[ $_bin ]] && dracut_install "$_bin"

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done

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}

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# attempt to install any programs specified in a udev rule

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inst_rule_group_owner() {

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local i

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for i in $(sed -nr 's/.*OWNER=?"([^ "]+).*/\1/p' "$1"); do

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if ! grep -Eq "^$i:" "$initdir/etc/passwd" 2>/dev/null; then

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grep -E "^$i:" /etc/passwd 2>/dev/null >> "$initdir/etc/passwd"

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fi

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done

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for i in $(sed -nr 's/.*GROUP=?"([^ "]+).*/\1/p' "$1"); do

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if ! grep -Eq "^$i:" "$initdir/etc/group" 2>/dev/null; then

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grep -E "^$i:" /etc/group 2>/dev/null >> "$initdir/etc/group"

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fi

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done

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}

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inst_rule_initqueue() {

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if grep -q -F initqueue "$1"; then

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dracut_need_initqueue

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fi

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}

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# udev rules always get installed in the same place, so

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# create a function to install them to make life simpler.

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inst_rules() {

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local _target=/etc/udev/rules.d _rule _found

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inst_dir "${udevdir}/rules.d"

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inst_dir "$_target"

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for _rule in "$@"; do

[398] Fix | Delete

if [ "${_rule#/}" = "$_rule" ]; then

[399] Fix | Delete

for r in ${udevdir}/rules.d ${hostonly:+/etc/udev/rules.d}; do

[400] Fix | Delete

[[ -e $r/$_rule ]] || continue

[401] Fix | Delete

_found="$r/$_rule"

[402] Fix | Delete

inst_rule_programs "$_found"

[403] Fix | Delete

inst_rule_group_owner "$_found"

[404] Fix | Delete

inst_rule_initqueue "$_found"

[405] Fix | Delete

inst_simple "$_found"

[406] Fix | Delete

done

[407] Fix | Delete

fi

[408] Fix | Delete

for r in '' $dracutbasedir/rules.d/; do

[409] Fix | Delete

# skip rules without an absolute path

[410] Fix | Delete

[[ "${r}$_rule" != /* ]] && continue

[411] Fix | Delete

[[ -f ${r}$_rule ]] || continue

[412] Fix | Delete

_found="${r}$_rule"

[413] Fix | Delete

inst_rule_programs "$_found"

[414] Fix | Delete

inst_rule_group_owner "$_found"

[415] Fix | Delete

inst_rule_initqueue "$_found"

[416] Fix | Delete

inst_simple "$_found" "$_target/${_found##*/}"

[417] Fix | Delete

done

[418] Fix | Delete

[[ $_found ]] || dinfo "Skipping udev rule: $_rule"

[419] Fix | Delete

done

[420] Fix | Delete

}

[421] Fix | Delete

[422] Fix | Delete

inst_rules_wildcard() {

[423] Fix | Delete

local _target=/etc/udev/rules.d _rule _found

[424] Fix | Delete

[425] Fix | Delete

inst_dir "${udevdir}/rules.d"

[426] Fix | Delete

inst_dir "$_target"

[427] Fix | Delete

for _rule in ${udevdir}/rules.d/$1 ${dracutbasedir}/rules.d/$1 ; do

[428] Fix | Delete

[[ -e $_rule ]] || continue

[429] Fix | Delete

inst_rule_programs "$_rule"

[430] Fix | Delete

inst_rule_group_owner "$_rule"

[431] Fix | Delete

inst_rule_initqueue "$_rule"

[432] Fix | Delete

inst_simple "$_rule"

[433] Fix | Delete

_found=$_rule

[434] Fix | Delete

done

[435] Fix | Delete

if [[ -n ${hostonly} ]] ; then

[436] Fix | Delete

for _rule in ${_target}/$1 ; do

[437] Fix | Delete

[[ -f $_rule ]] || continue

[438] Fix | Delete

inst_rule_programs "$_rule"

[439] Fix | Delete

inst_rule_group_owner "$_rule"

[440] Fix | Delete

inst_rule_initqueue "$_rule"

[441] Fix | Delete

inst_simple "$_rule"

[442] Fix | Delete

_found=$_rule

[443] Fix | Delete

done

[444] Fix | Delete

fi

[445] Fix | Delete

[[ $_found ]] || dinfo "Skipping udev rule: $_rule"

[446] Fix | Delete

}

[447] Fix | Delete

[448] Fix | Delete

# make sure that library links are correct and up to date

[449] Fix | Delete

build_ld_cache() {

[450] Fix | Delete

for f in "$dracutsysrootdir"/etc/ld.so.conf "$dracutsysrootdir"/etc/ld.so.conf.d/*; do

[451] Fix | Delete

[[ -f $f ]] && inst_simple "${f#$dracutsysrootdir}"

[452] Fix | Delete

done

[453] Fix | Delete

if ! ldconfig -r "$initdir" -f /etc/ld.so.conf; then

[454] Fix | Delete

if [[ $EUID == 0 ]]; then

[455] Fix | Delete

derror "ldconfig exited ungracefully"

[456] Fix | Delete

else

[457] Fix | Delete

derror "ldconfig might need uid=0 (root) for chroot()"

[458] Fix | Delete

fi

[459] Fix | Delete

fi

[460] Fix | Delete

}

[461] Fix | Delete

[462] Fix | Delete

prepare_udev_rules() {

[463] Fix | Delete

[ -z "$UDEVVERSION" ] && export UDEVVERSION=$(udevadm --version | { read v _ ; echo $v ; })

[464] Fix | Delete

[465] Fix | Delete

for f in "$@"; do

[466] Fix | Delete

f="${initdir}/etc/udev/rules.d/$f"

[467] Fix | Delete

[ -e "$f" ] || continue

[468] Fix | Delete

while read line || [ -n "$line" ]; do

[469] Fix | Delete

if [ "${line%%IMPORT PATH_ID}" != "$line" ]; then

[470] Fix | Delete

if [ $UDEVVERSION -ge 174 ]; then

[471] Fix | Delete

printf '%sIMPORT{builtin}="path_id"\n' "${line%%IMPORT PATH_ID}"

[472] Fix | Delete

else

[473] Fix | Delete

printf '%sIMPORT{program}="path_id %%p"\n' "${line%%IMPORT PATH_ID}"

[474] Fix | Delete

fi

[475] Fix | Delete

elif [ "${line%%IMPORT BLKID}" != "$line" ]; then

[476] Fix | Delete

if [ $UDEVVERSION -ge 176 ]; then

[477] Fix | Delete

printf '%sIMPORT{builtin}="blkid"\n' "${line%%IMPORT BLKID}"

[478] Fix | Delete

else

[479] Fix | Delete

printf '%sIMPORT{program}="/sbin/blkid -o udev -p $tempnode"\n' "${line%%IMPORT BLKID}"

[480] Fix | Delete

fi

[481] Fix | Delete

else

[482] Fix | Delete

echo "$line"

[483] Fix | Delete

fi

[484] Fix | Delete

done < "${f}" > "${f}.new"

[485] Fix | Delete

mv "${f}.new" "$f"

[486] Fix | Delete

done

[487] Fix | Delete

}

[488] Fix | Delete

[489] Fix | Delete

# install function specialized for hooks

[490] Fix | Delete

# $1 = type of hook, $2 = hook priority (lower runs first), $3 = hook

[491] Fix | Delete

# All hooks should be POSIX/SuS compliant, they will be sourced by init.

[492] Fix | Delete

inst_hook() {

[493] Fix | Delete

if ! [[ -f $3 ]]; then

[494] Fix | Delete

dfatal "Cannot install a hook ($3) that does not exist."

[495] Fix | Delete

dfatal "Aborting initrd creation."

[496] Fix | Delete

exit 1

[497] Fix | Delete

elif ! [[ "$hookdirs" == *$1* ]]; then

[498] Fix | Delete

dfatal "No such hook type $1. Aborting initrd creation."

[499] Fix | Delete