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Edit File : dracut-init.sh \| Size : 34.34 KB
#!/bin/bash # # functions used only by dracut and dracut modules # # Copyright 2005-2009 Red Hat, Inc. All rights reserved. # # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 2 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program. If not, see <http://www.gnu.org/licenses/>. # export LC_MESSAGES=C if [[ "$EUID" = "0" ]]; then export DRACUT_CP="cp --reflink=auto --sparse=auto --preserve=mode,timestamps,xattr,links -dfr" else export DRACUT_CP="cp --reflink=auto --sparse=auto --preserve=mode,timestamps,links -dfr" fi # is_func <command> # Check whether $1 is a function. is_func() { [[ "$(type -t "$1")" = "function" ]] } if ! [[ $dracutbasedir ]]; then dracutbasedir=${BASH_SOURCE[0]%/} [[ $dracutbasedir = dracut-functions ]] && dracutbasedir="." [[ $dracutbasedir ]] \|\| dracutbasedir="." dracutbasedir="$(readlink -f $dracutbasedir)" fi if ! is_func dinfo >/dev/null 2>&1; then . "$dracutbasedir/dracut-logger.sh" dlog_init fi if ! [[ $initdir ]]; then dfatal "initdir not set" exit 1 fi if ! [[ -d $initdir ]]; then mkdir -p "$initdir" fi if ! [[ $kernel ]]; then kernel=$(uname -r) export kernel fi srcmods="/lib/modules/$kernel/" [[ $drivers_dir ]] && { if ! command -v kmod &>/dev/null && vercmp "$(modprobe --version \| cut -d' ' -f3)" lt 3.7; then dfatal 'To use --kmoddir option module-init-tools >= 3.7 is required.' exit 1 fi srcmods="$drivers_dir" } export srcmods [[ $DRACUT_FIRMWARE_PATH ]] \|\| export DRACUT_FIRMWARE_PATH="/lib/firmware/updates:/lib/firmware:/lib/firmware/$kernel" # export standard hookdirs [[ $hookdirs ]] \|\| { hookdirs="cmdline pre-udev pre-trigger netroot " hookdirs+="initqueue initqueue/settled initqueue/online initqueue/finished initqueue/timeout " hookdirs+="pre-mount pre-pivot cleanup mount " hookdirs+="emergency shutdown-emergency pre-shutdown shutdown " export hookdirs } DRACUT_LDD=${DRACUT_LDD:-ldd} DRACUT_TESTBIN=${DRACUT_TESTBIN:-/bin/sh} DRACUT_LDCONFIG=${DRACUT_LDCONFIG:-ldconfig} . $dracutbasedir/dracut-functions.sh # Detect lib paths if ! [[ $libdirs ]] ; then if [[ "$(ldd /bin/sh)" == /lib64/ ]] &>/dev/null \ && [[ -d /lib64 ]]; then libdirs+=" /lib64" [[ -d /usr/lib64 ]] && libdirs+=" /usr/lib64" else libdirs+=" /lib" [[ -d /usr/lib ]] && libdirs+=" /usr/lib" fi libdirs+=" $(ldconfig_paths)" export libdirs fi # helper function for check() in module-setup.sh # to check for required installed binaries # issues a standardized warning message require_binaries() { local _module_name="${moddir##/}" local _ret=0 if [[ "$1" = "-m" ]]; then _module_name="$2" shift 2 fi for cmd in "$@"; do if ! find_binary "$cmd" &>/dev/null; then dinfo "dracut module '${_module_name#[0-9][0-9]}' will not be installed, because command '$cmd' could not be found!" ((_ret++)) fi done return $_ret } require_any_binary() { local _module_name="${moddir##/}" local _ret=1 if [[ "$1" = "-m" ]]; then _module_name="$2" shift 2 fi for cmd in "$@"; do if find_binary "$cmd" &>/dev/null; then _ret=0 break fi done if (( $_ret != 0 )); then dinfo "$_module_name: Could not find any command of '$@'!" return 1 fi return 0 } dracut_need_initqueue() { >"$initdir/lib/dracut/need-initqueue" } dracut_module_included() { [[ " $mods_to_load $modules_loaded " == \ $\ * ]] } dracut_no_switch_root() { >"$initdir/lib/dracut/no-switch-root" } dracut_module_path() { echo ${dracutbasedir}/modules.d/??${1} \| { read a b; echo "$a"; } } if ! [[ $DRACUT_INSTALL ]]; then DRACUT_INSTALL=$(find_binary dracut-install) fi if ! [[ $DRACUT_INSTALL ]] && [[ -x $dracutbasedir/dracut-install ]]; then DRACUT_INSTALL=$dracutbasedir/dracut-install elif ! [[ $DRACUT_INSTALL ]] && [[ -x $dracutbasedir/install/dracut-install ]]; then DRACUT_INSTALL=$dracutbasedir/install/dracut-install fi if ! [[ -x $DRACUT_INSTALL ]]; then dfatal "dracut-install not found!" exit 10 fi if [[ $hostonly == "-h" ]]; then if ! [[ $DRACUT_KERNEL_MODALIASES ]] \|\| ! [[ -f "$DRACUT_KERNEL_MODALIASES" ]]; then export DRACUT_KERNEL_MODALIASES="${DRACUT_TMPDIR}/modaliases" $DRACUT_INSTALL ${srcmods:+--kerneldir "$srcmods"} --modalias > "$DRACUT_KERNEL_MODALIASES" fi fi [[ $DRACUT_RESOLVE_LAZY ]] \|\| export DRACUT_RESOLVE_DEPS=1 inst_dir() { [[ -e ${initdir}/"$1" ]] && return 0 # already there $DRACUT_INSTALL ${initdir:+-D "$initdir"} -d "$@" (($? != 0)) && derror FAILED: $DRACUT_INSTALL ${initdir:+-D "$initdir"} -d "$@" \|\| : } inst() { local _hostonly_install if [[ "$1" == "-H" ]]; then _hostonly_install="-H" shift fi [[ -e ${initdir}/"${2:-$1}" ]] && return 0 # already there $DRACUT_INSTALL ${initdir:+-D "$initdir"} ${loginstall:+-L "$loginstall"} ${DRACUT_RESOLVE_DEPS:+-l} ${DRACUT_FIPS_MODE:+-f} ${_hostonly_install:+-H} "$@" (($? != 0)) && derror FAILED: $DRACUT_INSTALL ${initdir:+-D "$initdir"} ${loginstall:+-L "$loginstall"} ${DRACUT_RESOLVE_DEPS:+-l} ${DRACUT_FIPS_MODE:+-f} ${_hostonly_install:+-H} "$@" \|\| : } inst_simple() { local _hostonly_install if [[ "$1" == "-H" ]]; then _hostonly_install="-H" shift fi [[ -e ${initdir}/"${2:-$1}" ]] && return 0 # already there [[ -e $1 ]] \|\| return 1 # no source $DRACUT_INSTALL ${initdir:+-D "$initdir"} ${loginstall:+-L "$loginstall"} ${_hostonly_install:+-H} "$@" (($? != 0)) && derror FAILED: $DRACUT_INSTALL ${initdir:+-D "$initdir"} ${loginstall:+-L "$loginstall"} ${_hostonly_install:+-H} "$@" \|\| : } inst_symlink() { local _hostonly_install if [[ "$1" == "-H" ]]; then _hostonly_install="-H" shift fi [[ -e ${initdir}/"${2:-$1}" ]] && return 0 # already there [[ -L $1 ]] \|\| return 1 $DRACUT_INSTALL ${initdir:+-D "$initdir"} ${loginstall:+-L "$loginstall"} ${DRACUT_RESOLVE_DEPS:+-l} ${DRACUT_FIPS_MODE:+-f} ${_hostonly_install:+-H} "$@" (($? != 0)) && derror FAILED: $DRACUT_INSTALL ${initdir:+-D "$initdir"} ${loginstall:+-L "$loginstall"} ${DRACUT_RESOLVE_DEPS:+-l} ${DRACUT_FIPS_MODE:+-f} ${_hostonly_install:+-H} "$@" \|\| : } inst_multiple() { local _ret $DRACUT_INSTALL ${initdir:+-D "$initdir"} -a ${loginstall:+-L "$loginstall"} ${DRACUT_RESOLVE_DEPS:+-l} ${DRACUT_FIPS_MODE:+-f} "$@" _ret=$? (($_ret != 0)) && derror FAILED: $DRACUT_INSTALL ${initdir:+-D "$initdir"} -a ${loginstall:+-L "$loginstall"} ${DRACUT_RESOLVE_DEPS:+-l} ${DRACUT_FIPS_MODE:+-f} ${_hostonly_install:+-H} "$@" \|\| : return $_ret } dracut_install() { inst_multiple "$@" } dracut_instmods() { local _silent=0; local i; [[ $no_kernel = yes ]] && return for i in "$@"; do [[ $i == "--silent" ]] && _silent=1 done $DRACUT_INSTALL \ ${initdir:+-D "$initdir"} ${loginstall:+-L "$loginstall"} ${hostonly:+-H} ${omit_drivers:+-N "$omit_drivers"} ${srcmods:+--kerneldir "$srcmods"} -m "$@" (($? != 0)) && (($_silent == 0)) && derror FAILED: $DRACUT_INSTALL ${initdir:+-D "$initdir"} ${loginstall:+-L "$loginstall"} ${hostonly:+-H} ${omit_drivers:+-N "$omit_drivers"} ${srcmods:+--kerneldir "$srcmods"} -m "$@" \|\| : } inst_library() { local _hostonly_install if [[ "$1" == "-H" ]]; then _hostonly_install="-H" shift fi [[ -e ${initdir}/"${2:-$1}" ]] && return 0 # already there [[ -e $1 ]] \|\| return 1 # no source $DRACUT_INSTALL ${initdir:+-D "$initdir"} ${loginstall:+-L "$loginstall"} ${DRACUT_RESOLVE_DEPS:+-l} ${DRACUT_FIPS_MODE:+-f} ${_hostonly_install:+-H} "$@" (($? != 0)) && derror FAILED: $DRACUT_INSTALL ${initdir:+-D "$initdir"} ${loginstall:+-L "$loginstall"} ${DRACUT_RESOLVE_DEPS:+-l} ${DRACUT_FIPS_MODE:+-f} ${_hostonly_install:+-H} "$@" \|\| : } inst_binary() { $DRACUT_INSTALL ${initdir:+-D "$initdir"} ${loginstall:+-L "$loginstall"} ${DRACUT_RESOLVE_DEPS:+-l} ${DRACUT_FIPS_MODE:+-f} "$@" (($? != 0)) && derror FAILED: $DRACUT_INSTALL ${initdir:+-D "$initdir"} ${loginstall:+-L "$loginstall"} ${DRACUT_RESOLVE_DEPS:+-l} ${DRACUT_FIPS_MODE:+-f} "$@" \|\| : } inst_script() { $DRACUT_INSTALL ${initdir:+-D "$initdir"} ${loginstall:+-L "$loginstall"} ${DRACUT_RESOLVE_DEPS:+-l} ${DRACUT_FIPS_MODE:+-f} "$@" (($? != 0)) && derror FAILED: $DRACUT_INSTALL ${initdir:+-D "$initdir"} ${loginstall:+-L "$loginstall"} ${DRACUT_RESOLVE_DEPS:+-l} ${DRACUT_FIPS_MODE:+-f} "$@" \|\| : } inst_fsck_help() { local _helper="/run/dracut/fsck/fsck_help_$1.txt" $DRACUT_INSTALL ${initdir:+-D "$initdir"} ${loginstall:+-L "$loginstall"} ${DRACUT_RESOLVE_DEPS:+-l} ${DRACUT_FIPS_MODE:+-f} "$2" $_helper (($? != 0)) && derror $DRACUT_INSTALL ${initdir:+-D "$initdir"} ${loginstall:+-L "$loginstall"} ${DRACUT_RESOLVE_DEPS:+-l} ${DRACUT_FIPS_MODE:+-f} "$2" $_helper \|\| : } # Use with form hostonly="$(optional_hostonly)" inst_xxxx <args> # If hosotnly mode is set to "strict", hostonly restrictions will still # be applied, else will ignore hostonly mode and try to install all # given modules. optional_hostonly() { if [[ $hostonly_mode = "strict" ]]; then printf -- "$hostonly" else printf "" fi } mark_hostonly() { for i in "$@"; do echo "$i" >> "$initdir/lib/dracut/hostonly-files" done } # find symlinks linked to given library file # $1 = library file # Function searches for symlinks by stripping version numbers appended to # library filename, checks if it points to the same target and finally # prints the list of symlinks to stdout. # # Example: # rev_lib_symlinks libfoo.so.8.1 # output: libfoo.so.8 libfoo.so # (Only if libfoo.so.8 and libfoo.so exists on host system.) rev_lib_symlinks() { [[ ! $1 ]] && return 0 local fn="$1" orig="$(readlink -f "$1")" links='' [[ ${fn} == .so. ]] \|\| return 1 until [[ ${fn##.} == so ]]; do fn="${fn%.}" [[ -L ${fn} && $(readlink -f "${fn}") == ${orig} ]] && links+=" ${fn}" done echo "${links}" } # attempt to install any programs specified in a udev rule inst_rule_programs() { local _prog _bin for _prog in $(sed -nr 's/.PROGRAM==?"([^ "]+)./\1/p' "$1"); do _bin="" if [ -x ${udevdir}/$_prog ]; then _bin=${udevdir}/$_prog elif [[ "${_prog/\$env\{/}" == "$_prog" ]]; then _bin=$(find_binary "$_prog") \|\| { dinfo "Skipping program $_prog using in udev rule ${1##/} as it cannot be found" continue; } fi [[ $_bin ]] && inst_binary "$_bin" done for _prog in $(sed -nr 's/.RUN[+=]=?"([^ "]+)./\1/p' "$1"); do _bin="" if [ -x ${udevdir}/$_prog ]; then _bin=${udevdir}/$_prog elif [[ "${_prog/\$env\{/}" == "$_prog" ]] && [[ "${_prog}" != "/sbin/initqueue" ]]; then _bin=$(find_binary "$_prog") \|\| { dinfo "Skipping program $_prog using in udev rule ${1##/} as it cannot be found" continue; } fi [[ $_bin ]] && inst_binary "$_bin" done for _prog in $(sed -nr 's/.IMPORT\{program\}==?"([^ "]+)./\1/p' "$1"); do _bin="" if [ -x ${udevdir}/$_prog ]; then _bin=${udevdir}/$_prog elif [[ "${_prog/\$env\{/}" == "$_prog" ]]; then _bin=$(find_binary "$_prog") \|\| { dinfo "Skipping program $_prog using in udev rule ${1##/} as it cannot be found" continue; } fi [[ $_bin ]] && dracut_install "$_bin" done } # attempt to install any programs specified in a udev rule inst_rule_group_owner() { local i for i in $(sed -nr 's/.OWNER=?"([^ "]+)./\1/p' "$1"); do if ! grep -Eq "^$i:" "$initdir/etc/passwd" 2>/dev/null; then grep -E "^$i:" /etc/passwd 2>/dev/null >> "$initdir/etc/passwd" fi done for i in $(sed -nr 's/.GROUP=?"([^ "]+)./\1/p' "$1"); do if ! grep -Eq "^$i:" "$initdir/etc/group" 2>/dev/null; then grep -E "^$i:" /etc/group 2>/dev/null >> "$initdir/etc/group" fi done } inst_rule_initqueue() { if grep -q -F initqueue "$1"; then dracut_need_initqueue fi } # udev rules always get installed in the same place, so # create a function to install them to make life simpler. inst_rules() { local _target=/etc/udev/rules.d _rule _found inst_dir "${udevdir}/rules.d" inst_dir "$_target" for _rule in "$@"; do if [ "${_rule#/}" = "$_rule" ]; then for r in ${udevdir}/rules.d ${hostonly:+/etc/udev/rules.d}; do [[ -e $r/$_rule ]] \|\| continue _found="$r/$_rule" inst_rule_programs "$_found" inst_rule_group_owner "$_found" inst_rule_initqueue "$_found" inst_simple "$_found" done fi for r in '' $dracutbasedir/rules.d/; do # skip rules without an absolute path [[ "${r}$_rule" != / ]] && continue [[ -f ${r}$_rule ]] \|\| continue _found="${r}$_rule" inst_rule_programs "$_found" inst_rule_group_owner "$_found" inst_rule_initqueue "$_found" inst_simple "$_found" "$_target/${_found##/}" done [[ $_found ]] \|\| dinfo "Skipping udev rule: $_rule" done } inst_rules_wildcard() { local _target=/etc/udev/rules.d _rule _found inst_dir "${udevdir}/rules.d" inst_dir "$_target" for _rule in ${udevdir}/rules.d/$1 ${dracutbasedir}/rules.d/$1 ; do [[ -e $_rule ]] \|\| continue inst_rule_programs "$_rule" inst_rule_group_owner "$_rule" inst_rule_initqueue "$_rule" inst_simple "$_rule" _found=$_rule done if [[ -n ${hostonly} ]] ; then for _rule in ${_target}/$1 ; do [[ -f $_rule ]] \|\| continue inst_rule_programs "$_rule" inst_rule_group_owner "$_rule" inst_rule_initqueue "$_rule" inst_simple "$_rule" _found=$_rule done fi [[ $_found ]] \|\| dinfo "Skipping udev rule: $_rule" } # make sure that library links are correct and up to date build_ld_cache() { for f in "$dracutsysrootdir"/etc/ld.so.conf "$dracutsysrootdir"/etc/ld.so.conf.d/; do [[ -f $f ]] && inst_simple "${f#$dracutsysrootdir}" done if ! ldconfig -r "$initdir" -f /etc/ld.so.conf; then if [[ $EUID == 0 ]]; then derror "ldconfig exited ungracefully" else derror "ldconfig might need uid=0 (root) for chroot()" fi fi } prepare_udev_rules() { [ -z "$UDEVVERSION" ] && export UDEVVERSION=$(udevadm --version \| { read v _ ; echo $v ; }) for f in "$@"; do f="${initdir}/etc/udev/rules.d/$f" [ -e "$f" ] \|\| continue while read line \|\| [ -n "$line" ]; do if [ "${line%%IMPORT PATH_ID}" != "$line" ]; then if [ $UDEVVERSION -ge 174 ]; then printf '%sIMPORT{builtin}="path_id"\n' "${line%%IMPORT PATH_ID}" else printf '%sIMPORT{program}="path_id %%p"\n' "${line%%IMPORT PATH_ID}" fi elif [ "${line%%IMPORT BLKID}" != "$line" ]; then if [ $UDEVVERSION -ge 176 ]; then printf '%sIMPORT{builtin}="blkid"\n' "${line%%IMPORT BLKID}" else printf '%sIMPORT{program}="/sbin/blkid -o udev -p $tempnode"\n' "${line%%IMPORT BLKID}" fi else echo "$line" fi done < "${f}" > "${f}.new" mv "${f}.new" "$f" done } # install function specialized for hooks # $1 = type of hook, $2 = hook priority (lower runs first), $3 = hook # All hooks should be POSIX/SuS compliant, they will be sourced by init. inst_hook() { if ! [[ -f $3 ]]; then dfatal "Cannot install a hook ($3) that does not exist." dfatal "Aborting initrd creation." exit 1 elif ! [[ "$hookdirs" == $1 ]]; then dfatal "No such hook type $1. Aborting initrd creation." exit 1 fi inst_simple "$3" "/lib/dracut/hooks/${1}/${2}-${3##/}" } # install any of listed files # # If first argument is '-d' and second some destination path, first accessible # source is installed into this path, otherwise it will installed in the same # path as source. If none of listed files was installed, function return 1. # On first successful installation it returns with 0 status. # # Example: # # inst_any -d /bin/foo /bin/bar /bin/baz # # Lets assume that /bin/baz exists, so it will be installed as /bin/foo in # initramfs. inst_any() { local to f [[ $1 = '-d' ]] && to="$2" && shift 2 for f in "$@"; do [[ -e $f ]] \|\| continue [[ $to ]] && inst "$f" "$to" && return 0 inst "$f" && return 0 done return 1 } # inst_libdir_file [-n <pattern>] <file> [<file>...] # Install a <file> located on a lib directory to the initramfs image # -n <pattern> install matching files inst_libdir_file() { local _files if [[ "$1" == "-n" ]]; then local _pattern=$2 shift 2 for _dir in $libdirs; do for _i in "$@"; do for _f in "$_dir"/$_i; do [[ "$_f" =~ $_pattern ]] \|\| continue [[ -e "$_f" ]] && _files+="$_f " done done done else for _dir in $libdirs; do for _i in "$@"; do for _f in "$_dir"/$_i; do [[ -e "$_f" ]] && _files+="$_f " done done done fi [[ $_files ]] && inst_multiple $_files } # install function decompressing the target and handling symlinks # $@ = list of compressed (gz or bz2) files or symlinks pointing to such files # # Function install targets in the same paths inside overlay but decompressed # and without extensions (.gz, .bz2). inst_decompress() { local _src _cmd for _src in $@ do case ${_src} in .gz) _cmd='gzip -f -d' ;; .bz2) _cmd='bzip2 -d' ;; ) return 1 ;; esac inst_simple ${_src} # Decompress with chosen tool. We assume that tool changes name e.g. # from 'name.gz' to 'name'. ${_cmd} "${initdir}${_src}" done } # It's similar to above, but if file is not compressed, performs standard # install. # $@ = list of files inst_opt_decompress() { local _src for _src in $@; do inst_decompress "${_src}" \|\| inst "${_src}" done } # module_check <dracut module> # execute the check() function of module-setup.sh of <dracut module> # or the "check" script, if module-setup.sh is not found # "check $hostonly" is called module_check() { local _moddir=$(echo ${dracutbasedir}/modules.d/??${1} \| { read a b; echo "$a"; }) local _ret local _forced=0 local _hostonly=$hostonly [ $# -eq 2 ] && _forced=$2 [[ -d $_moddir ]] \|\| return 1 if [[ ! -f $_moddir/module-setup.sh ]]; then # if we do not have a check script, we are unconditionally included [[ -x $_moddir/check ]] \|\| return 0 [ $_forced -ne 0 ] && unset hostonly $_moddir/check $hostonly _ret=$? else unset check depends cmdline install installkernel check() { true; } . $_moddir/module-setup.sh is_func check \|\| return 0 [ $_forced -ne 0 ] && unset hostonly moddir=$_moddir check $hostonly _ret=$? unset check depends cmdline install installkernel fi hostonly=$_hostonly return $_ret } # module_check_mount <dracut module> # execute the check() function of module-setup.sh of <dracut module> # or the "check" script, if module-setup.sh is not found # "mount_needs=1 check 0" is called module_check_mount() { local _moddir=$(echo ${dracutbasedir}/modules.d/??${1} \| { read a b; echo "$a"; }) local _ret mount_needs=1 [[ -d $_moddir ]] \|\| return 1 if [[ ! -f $_moddir/module-setup.sh ]]; then # if we do not have a check script, we are unconditionally included [[ -x $_moddir/check ]] \|\| return 0 mount_needs=1 $_moddir/check 0 _ret=$? else unset check depends cmdline install installkernel check() { false; } . $_moddir/module-setup.sh moddir=$_moddir check 0 _ret=$? unset check depends cmdline install installkernel fi unset mount_needs return $_ret } # module_depends <dracut module> # execute the depends() function of module-setup.sh of <dracut module> # or the "depends" script, if module-setup.sh is not found module_depends() { local _moddir=$(echo ${dracutbasedir}/modules.d/??${1} \| { read a b; echo "$a"; }) local _ret [[ -d $_moddir ]] \|\| return 1 if [[ ! -f $_moddir/module-setup.sh ]]; then # if we do not have a check script, we have no deps [[ -x $_moddir/check ]] \|\| return 0 $_moddir/check -d return $? else unset check depends cmdline install installkernel depends() { true; } . $_moddir/module-setup.sh moddir=$_moddir depends _ret=$? unset check depends cmdline install installkernel return $_ret fi } # module_cmdline <dracut module> # execute the cmdline() function of module-setup.sh of <dracut module> # or the "cmdline" script, if module-setup.sh is not found module_cmdline() { local _moddir=$(echo ${dracutbasedir}/modules.d/??${1} \| { read a b; echo "$a"; }) local _ret [[ -d $_moddir ]] \|\| return 1 if [[ ! -f $_moddir/module-setup.sh ]]; then [[ -x $_moddir/cmdline ]] && . "$_moddir/cmdline" return $? else unset check depends cmdline install installkernel cmdline() { true; } . $_moddir/module-setup.sh moddir=$_moddir cmdline _ret=$? unset check depends cmdline install installkernel return $_ret fi } # module_install <dracut module> # execute the install() function of module-setup.sh of <dracut module> # or the "install" script, if module-setup.sh is not found module_install() { local _moddir=$(echo ${dracutbasedir}/modules.d/??${1} \| { read a b; echo "$a"; }) local _ret [[ -d $_moddir ]] \|\| return 1 if [[ ! -f $_moddir/module-setup.sh ]]; then [[ -x $_moddir/install ]] && . "$_moddir/install" return $? else unset check depends cmdline install installkernel install() { true; } . $_moddir/module-setup.sh moddir=$_moddir install _ret=$? unset check depends cmdline install installkernel return $_ret fi } # module_installkernel <dracut module> # execute the installkernel() function of module-setup.sh of <dracut module> # or the "installkernel" script, if module-setup.sh is not found module_installkernel() { local _moddir=$(echo ${dracutbasedir}/modules.d/??${1} \| { read a b; echo "$a"; }) local _ret [[ -d $_moddir ]] \|\| return 1 if [[ ! -f $_moddir/module-setup.sh ]]; then [[ -x $_moddir/installkernel ]] && . "$_moddir/installkernel" return $? else unset check depends cmdline install installkernel installkernel() { true; } . $_moddir/module-setup.sh moddir=$_moddir installkernel _ret=$? unset check depends cmdline install installkernel return $_ret fi } # check_mount <dracut module> # check_mount checks, if a dracut module is needed for the given # device and filesystem types in "${host_fs_types[@]}" check_mount() { local _mod=$1 local _moddir=$(echo ${dracutbasedir}/modules.d/??${1} \| { read a b; echo "$a"; }) local _ret local _moddep [ "${#host_fs_types[@]}" -le 0 ] && return 1 # If we are already scheduled to be loaded, no need to check again. [[ " $mods_to_load " == \ $_mod\ ]] && return 0 [[ " $mods_checked_as_dep " == \ $_mod\ ]] && return 1 # This should never happen, but... [[ -d $_moddir ]] \|\| return 1 [[ $2 ]] \|\| mods_checked_as_dep+=" $_mod " if [[ " $omit_dracutmodules " == \ $_mod\ ]]; then return 1 fi if [[ " $dracutmodules $add_dracutmodules $force_add_dracutmodules" == \ $_mod\ ]]; then module_check_mount $_mod; ret=$? # explicit module, so also accept ret=255 [[ $ret = 0 \|\| $ret = 255 ]] \|\| return 1 else # module not in our list if [[ $dracutmodules = all ]]; then # check, if we can and should install this module module_check_mount $_mod \|\| return 1 else # skip this module return 1 fi fi for _moddep in $(module_depends $_mod); do # handle deps as if they were manually added [[ " $dracutmodules " == \ $_mod\ ]] \ && [[ " $dracutmodules " != \ $_moddep\ ]] \ && dracutmodules+=" $_moddep " [[ " $add_dracutmodules " == \ $_mod\ ]] \ && [[ " $add_dracutmodules " != \ $_moddep\ ]] \ && add_dracutmodules+=" $_moddep " [[ " $force_add_dracutmodules " == \ $_mod\ ]] \ && [[ " $force_add_dracutmodules " != \ $_moddep\ ]] \ && force_add_dracutmodules+=" $_moddep " # if a module we depend on fail, fail also if ! check_module $_moddep; then derror "dracut module '$_mod' depends on '$_moddep', which can't be installed" return 1 fi done [[ " $mods_to_load " == \ $_mod\ ]] \|\| \ mods_to_load+=" $_mod " return 0 } # check_module <dracut module> [<use_as_dep>] # check if a dracut module is to be used in the initramfs process # if <use_as_dep> is set, then the process also keeps track # that the modules were checked for the dependency tracking process check_module() { local _mod=$1 local _moddir=$(echo ${dracutbasedir}/modules.d/??${1} \| { read a b; echo "$a"; }) local _ret local _moddep # If we are already scheduled to be loaded, no need to check again. [[ " $mods_to_load " == \ $_mod\ ]] && return 0 [[ " $mods_checked_as_dep " == \ $_mod\ ]] && return 1 # This should never happen, but... [[ -d $_moddir ]] \|\| return 1 [[ $2 ]] \|\| mods_checked_as_dep+=" $_mod " if [[ " $omit_dracutmodules " == \ $_mod\ ]]; then dinfo "dracut module '$_mod' will not be installed, because it's in the list to be omitted!" return 1 fi if [[ " $dracutmodules $add_dracutmodules $force_add_dracutmodules" == \ $_mod\ ]]; then if [[ " $dracutmodules $force_add_dracutmodules " == \ $_mod\ ]]; then module_check $_mod 1; ret=$? else module_check $_mod 0; ret=$? fi # explicit module, so also accept ret=255 [[ $ret = 0 \|\| $ret = 255 ]] \|\| return 1 else # module not in our list if [[ $dracutmodules = all ]]; then # check, if we can and should install this module module_check $_mod; ret=$? if [[ $ret != 0 ]]; then [[ $2 ]] && return 1 [[ $ret != 255 ]] && return 1 fi else # skip this module return 1 fi fi for _moddep in $(module_depends $_mod); do # handle deps as if they were manually added [[ " $dracutmodules " == \ $_mod\ ]] \ && [[ " $dracutmodules " != \ $_moddep\ ]] \ && dracutmodules+=" $_moddep " [[ " $add_dracutmodules " == \ $_mod\ ]] \ && [[ " $add_dracutmodules " != \ $_moddep\ ]] \ && add_dracutmodules+=" $_moddep " [[ " $force_add_dracutmodules " == \ $_mod\ ]] \ && [[ " $force_add_dracutmodules " != \ $_moddep\ ]] \ && force_add_dracutmodules+=" $_moddep " # if a module we depend on fail, fail also if ! check_module $_moddep; then derror "dracut module '$_mod' depends on '$_moddep', which can't be installed" return 1 fi done [[ " $mods_to_load " == \ $_mod\ ]] \|\| \ mods_to_load+=" $_mod " return 0 } # for_each_module_dir <func> # execute "<func> <dracut module> 1" for_each_module_dir() { local _modcheck local _mod local _moddir local _func _func=$1 for _moddir in "$dracutbasedir/modules.d"/[0-9][0-9]; do [[ -d $_moddir ]] \|\| continue; [[ -e $_moddir/install \|\| -e $_moddir/installkernel \|\| \ -e $_moddir/module-setup.sh ]] \|\| continue _mod=${_moddir##/}; _mod=${_mod#[0-9][0-9]} $_func $_mod 1 done # Report any missing dracut modules, the user has specified _modcheck="$add_dracutmodules $force_add_dracutmodules" [[ $dracutmodules != all ]] && _modcheck="$_modcheck $dracutmodules" for _mod in $_modcheck; do [[ " $mods_to_load " == \ $_mod\ ]] && continue [[ " $force_add_dracutmodules " != \ $_mod\ ]] \ && [[ " $dracutmodules " != \ $_mod\ ]] \ && [[ " $omit_dracutmodules " == \ $_mod\ ]] \ && continue derror "dracut module '$_mod' cannot be found or installed." [[ " $force_add_dracutmodules " == \ $_mod\ ]] && exit 1 [[ " $dracutmodules " == \ $_mod\ ]] && exit 1 [[ " $add_dracutmodules " == \ $_mod\ ]] && exit 1 done } # Install a single kernel module along with any firmware it may require. # $1 = full path to kernel module to install install_kmod_with_fw() { # no need to go further if the module is already installed [[ -e "${initdir}/lib/modules/$kernel/${1##/lib/modules/$kernel/}" ]] \ && return 0 if [[ $omit_drivers ]]; then local _kmod=${1##/} _kmod=${_kmod%.ko} _kmod=${_kmod/-/_} if [[ "$_kmod" =~ $omit_drivers ]]; then dinfo "Omitting driver $_kmod" return 0 fi if [[ "${1##/lib/modules/$kernel/}" =~ $omit_drivers ]]; then dinfo "Omitting driver $_kmod" return 0 fi fi if [[ $silent_omit_drivers ]]; then local _kmod=${1##/} _kmod=${_kmod%.ko} _kmod=${_kmod/-/_} [[ "$_kmod" =~ $silent_omit_drivers ]] && return 0 [[ "${1##/lib/modules/$kernel/}" =~ $silent_omit_drivers ]] && return 0 fi inst_simple "$1" "/lib/modules/$kernel/${1##/lib/modules/$kernel/}" ret=$? (($ret != 0)) && return $ret local _modname=${1##/} _fwdir _found _fw _modname=${_modname%.ko} for _fw in $(modinfo -k $kernel -F firmware $1 2>/dev/null); do _found='' for _fwdir in $fw_dir; do [[ -d $_fwdir && -f $_fwdir/$_fw ]] \|\| continue inst_simple "$_fwdir/$_fw" "/lib/firmware/$_fw" _found=yes done if [[ $_found != yes ]]; then if ! [[ -d $(echo /sys/module/${_modname//-/_}\|{ read a b; echo $a; }) ]]; then dinfo "Possible missing firmware \"${_fw}\" for kernel module" \ "\"${_modname}.ko\"" else dwarn "Possible missing firmware \"${_fw}\" for kernel module" \ "\"${_modname}.ko\"" fi fi done return 0 } # Do something with all the dependencies of a kernel module. # Note that kernel modules depend on themselves using the technique we use # $1 = function to call for each dependency we find # It will be passed the full path to the found kernel module # $2 = module to get dependencies for # rest of args = arguments to modprobe # _fderr specifies FD passed from surrounding scope for_each_kmod_dep() { local _func=$1 _kmod=$2 _cmd _modpath _options shift 2 modprobe "$@" --ignore-install --show-depends $_kmod 2>&${_fderr} \| ( while read _cmd _modpath _options \|\| [ -n "$_cmd" ]; do [[ $_cmd = insmod ]] \|\| continue $_func ${_modpath} \|\| exit $? done ) } dracut_kernel_post() { for _f in modules.builtin.bin modules.builtin modules.order; do [[ -e $srcmods/$_f ]] && inst_simple "$srcmods/$_f" "/lib/modules/$kernel/$_f" done # generate module dependencies for the initrd if [[ -d $initdir/lib/modules/$kernel ]] && \ ! depmod -a -b "$initdir" $kernel; then dfatal "\"depmod -a $kernel\" failed." exit 1 fi } instmods() { # instmods [-c [-s]] <kernel module> [<kernel module> ... ] # instmods [-c [-s]] <kernel subsystem> # install kernel modules along with all their dependencies. # <kernel subsystem> can be e.g. "=block" or "=drivers/usb/storage" # -c check # -s silent local _optional="-o" local _silent local _ret [[ $no_kernel = yes ]] && return if [[ $1 = '-c' ]]; then unset _optional shift fi if [[ $1 = '-s' ]]; then _silent=1 shift fi if (($# == 0)); then read -r -d '' -a args set -- "${args[@]}" fi if (($# == 0)); then return 0 fi $DRACUT_INSTALL \ ${initdir:+-D "$initdir"} \ ${loginstall:+-L "$loginstall"} \ ${hostonly:+-H} \ ${omit_drivers:+-N "$omit_drivers"} \ ${srcmods:+--kerneldir "$srcmods"} \ ${_optional:+-o} \ ${_silent:+--silent} \ -m "$@" _ret=$? if (($_ret != 0)) && [[ -z "$_silent" ]]; then derror "FAILED: " \ $DRACUT_INSTALL \ ${initdir:+-D "$initdir"} \ ${loginstall:+-L "$loginstall"} \ ${hostonly:+-H} \ ${omit_drivers:+-N "$omit_drivers"} \ ${srcmods:+--kerneldir "$srcmods"} \ ${_optional:+-o} \ ${_silent:+--silent} \ -m "$@" fi [[ "$optional" ]] && return 0 return $_ret } if [[ "$(ln --help)" == --relative ]]; then ln_r() { ln -sfnr "${initdir}/$1" "${initdir}/$2" } else ln_r() { local _source=$1 local _dest=$2 [[ -d "${_dest%/}" ]] && _dest=$(readlink -f "${_dest%/}")/${_dest##*/} ln -sfn -- "$(convert_abs_rel "${_dest}" "${_source}")" "${initdir}/${_dest}" } fi Back

Edit File : dracut-init.sh | Size : 34.34 KB

#!/bin/bash
#
# functions used only by dracut and dracut modules
#
# Copyright 2005-2009 Red Hat, Inc.  All rights reserved.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.
#
export LC_MESSAGES=C

if [[ "$EUID" = "0" ]]; then
    export DRACUT_CP="cp --reflink=auto --sparse=auto --preserve=mode,timestamps,xattr,links -dfr"
else
    export DRACUT_CP="cp --reflink=auto --sparse=auto --preserve=mode,timestamps,links -dfr"
fi

# is_func <command>
# Check whether $1 is a function.
is_func() {
    [[ "$(type -t "$1")" = "function" ]]
}

if ! [[ $dracutbasedir ]]; then
    dracutbasedir=${BASH_SOURCE[0]%/*}
    [[ $dracutbasedir = dracut-functions* ]] && dracutbasedir="."
    [[ $dracutbasedir ]] || dracutbasedir="."
    dracutbasedir="$(readlink -f $dracutbasedir)"
fi

if ! is_func dinfo >/dev/null 2>&1; then
    . "$dracutbasedir/dracut-logger.sh"
    dlog_init
fi

if ! [[ $initdir ]]; then
    dfatal "initdir not set"
    exit 1
fi

if ! [[ -d $initdir ]]; then
    mkdir -p "$initdir"
fi

if ! [[ $kernel ]]; then
    kernel=$(uname -r)
    export kernel
fi

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

[[ $drivers_dir ]] && {
    if ! command -v kmod &>/dev/null && vercmp "$(modprobe --version | cut -d' ' -f3)" lt 3.7; then
        dfatal 'To use --kmoddir option module-init-tools >= 3.7 is required.'
        exit 1
    fi
    srcmods="$drivers_dir"
}
export srcmods

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

# export standard hookdirs
[[ $hookdirs ]] || {
    hookdirs="cmdline pre-udev pre-trigger netroot "
    hookdirs+="initqueue initqueue/settled initqueue/online initqueue/finished initqueue/timeout "
    hookdirs+="pre-mount pre-pivot cleanup mount "
    hookdirs+="emergency shutdown-emergency pre-shutdown shutdown "
    export hookdirs
}

DRACUT_LDD=${DRACUT_LDD:-ldd}
DRACUT_TESTBIN=${DRACUT_TESTBIN:-/bin/sh}
DRACUT_LDCONFIG=${DRACUT_LDCONFIG:-ldconfig}

. $dracutbasedir/dracut-functions.sh

# Detect lib paths
if ! [[ $libdirs ]] ; then
    if [[ "$(ldd /bin/sh)" == */lib64/* ]] &>/dev/null \
        && [[ -d /lib64 ]]; then
        libdirs+=" /lib64"
        [[ -d /usr/lib64 ]] && libdirs+=" /usr/lib64"
    else
        libdirs+=" /lib"
        [[ -d /usr/lib ]] && libdirs+=" /usr/lib"
    fi

libdirs+=" $(ldconfig_paths)"

export libdirs
fi

# helper function for check() in module-setup.sh
# to check for required installed binaries
# issues a standardized warning message
require_binaries() {
    local _module_name="${moddir##*/}"
    local _ret=0

if [[ "$1" = "-m" ]]; then
        _module_name="$2"
        shift 2
    fi

for cmd in "$@"; do
        if ! find_binary "$cmd" &>/dev/null; then
            dinfo "dracut module '${_module_name#[0-9][0-9]}' will not be installed, because command '$cmd' could not be found!"
            ((_ret++))
        fi
    done
    return $_ret
}

require_any_binary() {
    local _module_name="${moddir##*/}"
    local _ret=1

if [[ "$1" = "-m" ]]; then
        _module_name="$2"
        shift 2
    fi

for cmd in "$@"; do
        if find_binary "$cmd" &>/dev/null; then
            _ret=0
            break
        fi
    done

if (( $_ret != 0 )); then
        dinfo "$_module_name: Could not find any command of '$@'!"
        return 1
    fi

return 0
}

dracut_need_initqueue() {
    >"$initdir/lib/dracut/need-initqueue"
}

dracut_module_included() {
    [[ " $mods_to_load $modules_loaded " == *\ $*\ * ]]
}

dracut_no_switch_root() {
    >"$initdir/lib/dracut/no-switch-root"
}

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

if ! [[ $DRACUT_INSTALL ]]; then
    DRACUT_INSTALL=$(find_binary dracut-install)
fi

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

if ! [[ -x $DRACUT_INSTALL ]]; then
    dfatal "dracut-install not found!"
    exit 10
fi

if [[ $hostonly == "-h" ]]; then
    if ! [[ $DRACUT_KERNEL_MODALIASES ]] || ! [[ -f "$DRACUT_KERNEL_MODALIASES" ]]; then
        export DRACUT_KERNEL_MODALIASES="${DRACUT_TMPDIR}/modaliases"
        $DRACUT_INSTALL ${srcmods:+--kerneldir "$srcmods"} --modalias > "$DRACUT_KERNEL_MODALIASES"
    fi
fi

[[ $DRACUT_RESOLVE_LAZY ]] || export DRACUT_RESOLVE_DEPS=1
inst_dir() {
    [[ -e ${initdir}/"$1" ]] && return 0  # already there
    $DRACUT_INSTALL ${initdir:+-D "$initdir"} -d "$@"
    (($? != 0)) && derror FAILED: $DRACUT_INSTALL ${initdir:+-D "$initdir"} -d "$@" || :
}

inst() {
    local _hostonly_install
    if [[ "$1" == "-H" ]]; then
        _hostonly_install="-H"
        shift
    fi
    [[ -e ${initdir}/"${2:-$1}" ]] && return 0  # already there
    $DRACUT_INSTALL ${initdir:+-D "$initdir"} ${loginstall:+-L "$loginstall"} ${DRACUT_RESOLVE_DEPS:+-l} ${DRACUT_FIPS_MODE:+-f} ${_hostonly_install:+-H} "$@"
    (($? != 0)) && derror FAILED: $DRACUT_INSTALL ${initdir:+-D "$initdir"} ${loginstall:+-L "$loginstall"} ${DRACUT_RESOLVE_DEPS:+-l} ${DRACUT_FIPS_MODE:+-f} ${_hostonly_install:+-H} "$@" || :
}

inst_simple() {
    local _hostonly_install
    if [[ "$1" == "-H" ]]; then
        _hostonly_install="-H"
        shift
    fi
    [[ -e ${initdir}/"${2:-$1}" ]] && return 0  # already there
    [[ -e $1 ]] || return 1  # no source
    $DRACUT_INSTALL ${initdir:+-D "$initdir"} ${loginstall:+-L "$loginstall"} ${_hostonly_install:+-H} "$@"
    (($? != 0)) && derror FAILED: $DRACUT_INSTALL ${initdir:+-D "$initdir"} ${loginstall:+-L "$loginstall"} ${_hostonly_install:+-H} "$@" || :
}

inst_symlink() {
    local _hostonly_install
    if [[ "$1" == "-H" ]]; then
        _hostonly_install="-H"
        shift
    fi
    [[ -e ${initdir}/"${2:-$1}" ]] && return 0  # already there
    [[ -L $1 ]] || return 1
    $DRACUT_INSTALL ${initdir:+-D "$initdir"} ${loginstall:+-L "$loginstall"} ${DRACUT_RESOLVE_DEPS:+-l}  ${DRACUT_FIPS_MODE:+-f} ${_hostonly_install:+-H} "$@"
    (($? != 0)) && derror FAILED: $DRACUT_INSTALL ${initdir:+-D "$initdir"} ${loginstall:+-L "$loginstall"} ${DRACUT_RESOLVE_DEPS:+-l}  ${DRACUT_FIPS_MODE:+-f} ${_hostonly_install:+-H} "$@" || :
}

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

dracut_install() {
    inst_multiple "$@"
}

dracut_instmods() {
    local _silent=0;
    local i;
    [[ $no_kernel = yes ]] && return
    for i in "$@"; do
        [[ $i == "--silent" ]] && _silent=1
    done

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

inst_library() {
    local _hostonly_install
    if [[ "$1" == "-H" ]]; then
        _hostonly_install="-H"
        shift
    fi
    [[ -e ${initdir}/"${2:-$1}" ]] && return 0  # already there
    [[ -e $1 ]] || return 1  # no source
    $DRACUT_INSTALL ${initdir:+-D "$initdir"} ${loginstall:+-L "$loginstall"} ${DRACUT_RESOLVE_DEPS:+-l}  ${DRACUT_FIPS_MODE:+-f} ${_hostonly_install:+-H} "$@"
    (($? != 0)) && derror FAILED: $DRACUT_INSTALL ${initdir:+-D "$initdir"} ${loginstall:+-L "$loginstall"} ${DRACUT_RESOLVE_DEPS:+-l}  ${DRACUT_FIPS_MODE:+-f} ${_hostonly_install:+-H} "$@" || :
}

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

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

inst_fsck_help() {
    local _helper="/run/dracut/fsck/fsck_help_$1.txt"
    $DRACUT_INSTALL ${initdir:+-D "$initdir"} ${loginstall:+-L "$loginstall"} ${DRACUT_RESOLVE_DEPS:+-l} ${DRACUT_FIPS_MODE:+-f} "$2" $_helper
    (($? != 0)) && derror $DRACUT_INSTALL ${initdir:+-D "$initdir"} ${loginstall:+-L "$loginstall"} ${DRACUT_RESOLVE_DEPS:+-l}  ${DRACUT_FIPS_MODE:+-f} "$2" $_helper || :
}

# Use with form hostonly="$(optional_hostonly)" inst_xxxx <args>
# If hosotnly mode is set to "strict", hostonly restrictions will still
# be applied, else will ignore hostonly mode and try to install all
# given modules.
optional_hostonly() {
    if [[ $hostonly_mode = "strict" ]]; then
        printf -- "$hostonly"
    else
        printf ""
    fi
}

mark_hostonly() {
    for i in "$@"; do
        echo "$i" >> "$initdir/lib/dracut/hostonly-files"
    done
}

# find symlinks linked to given library file
# $1 = library file
# Function searches for symlinks by stripping version numbers appended to
# library filename, checks if it points to the same target and finally
# prints the list of symlinks to stdout.
#
# Example:
# rev_lib_symlinks libfoo.so.8.1
# output: libfoo.so.8 libfoo.so
# (Only if libfoo.so.8 and libfoo.so exists on host system.)
rev_lib_symlinks() {
    [[ ! $1 ]] && return 0

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

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

until [[ ${fn##*.} == so ]]; do
        fn="${fn%.*}"
        [[ -L ${fn} && $(readlink -f "${fn}") == ${orig} ]] && links+=" ${fn}"
    done

echo "${links}"
}

# attempt to install any programs specified in a udev rule
inst_rule_programs() {
    local _prog _bin

for _prog in $(sed -nr 's/.*PROGRAM==?"([^ "]+).*/\1/p' "$1"); do
        _bin=""
        if [ -x ${udevdir}/$_prog ]; then
            _bin=${udevdir}/$_prog
        elif [[ "${_prog/\$env\{/}" == "$_prog" ]]; then
            _bin=$(find_binary "$_prog") || {
                dinfo "Skipping program $_prog using in udev rule ${1##*/} as it cannot be found"
                continue;
            }
        fi

[[ $_bin ]] && inst_binary "$_bin"
    done
    for _prog in $(sed -nr 's/.*RUN[+=]=?"([^ "]+).*/\1/p' "$1"); do
        _bin=""
        if [ -x ${udevdir}/$_prog ]; then
            _bin=${udevdir}/$_prog
        elif [[ "${_prog/\$env\{/}" == "$_prog" ]] && [[ "${_prog}" != "/sbin/initqueue" ]]; then
            _bin=$(find_binary "$_prog") || {
                dinfo "Skipping program $_prog using in udev rule ${1##*/} as it cannot be found"
                continue;
            }
        fi

[[ $_bin ]] && inst_binary "$_bin"
    done
    for _prog in $(sed -nr 's/.*IMPORT\{program\}==?"([^ "]+).*/\1/p' "$1"); do
        _bin=""
        if [ -x ${udevdir}/$_prog ]; then
            _bin=${udevdir}/$_prog
        elif [[ "${_prog/\$env\{/}" == "$_prog" ]]; then
            _bin=$(find_binary "$_prog") || {
                dinfo "Skipping program $_prog using in udev rule ${1##*/} as it cannot be found"
                continue;
            }
        fi

[[ $_bin ]] && dracut_install "$_bin"
    done
}

# attempt to install any programs specified in a udev rule
inst_rule_group_owner() {
    local i

for i in $(sed -nr 's/.*OWNER=?"([^ "]+).*/\1/p' "$1"); do
        if ! grep -Eq "^$i:" "$initdir/etc/passwd" 2>/dev/null; then
            grep -E "^$i:" /etc/passwd 2>/dev/null >> "$initdir/etc/passwd"
        fi
    done
    for i in $(sed -nr 's/.*GROUP=?"([^ "]+).*/\1/p' "$1"); do
        if ! grep -Eq "^$i:" "$initdir/etc/group" 2>/dev/null; then
            grep -E "^$i:" /etc/group 2>/dev/null >> "$initdir/etc/group"
        fi
    done
}

inst_rule_initqueue() {
    if grep -q -F initqueue "$1"; then
        dracut_need_initqueue
    fi
}

# udev rules always get installed in the same place, so
# create a function to install them to make life simpler.
inst_rules() {
    local _target=/etc/udev/rules.d _rule _found

inst_dir "${udevdir}/rules.d"
    inst_dir "$_target"
    for _rule in "$@"; do
        if [ "${_rule#/}" = "$_rule" ]; then
            for r in ${udevdir}/rules.d ${hostonly:+/etc/udev/rules.d}; do
                [[ -e $r/$_rule ]] || continue
                _found="$r/$_rule"
                inst_rule_programs "$_found"
                inst_rule_group_owner "$_found"
                inst_rule_initqueue "$_found"
                inst_simple "$_found"
            done
        fi
        for r in '' $dracutbasedir/rules.d/; do
            # skip rules without an absolute path
            [[ "${r}$_rule" != /* ]] && continue
            [[ -f ${r}$_rule ]] || continue
            _found="${r}$_rule"
            inst_rule_programs "$_found"
            inst_rule_group_owner "$_found"
            inst_rule_initqueue "$_found"
            inst_simple "$_found" "$_target/${_found##*/}"
        done
        [[ $_found ]] || dinfo "Skipping udev rule: $_rule"
    done
}

inst_rules_wildcard() {
    local _target=/etc/udev/rules.d _rule _found

inst_dir "${udevdir}/rules.d"
    inst_dir "$_target"
    for _rule in ${udevdir}/rules.d/$1 ${dracutbasedir}/rules.d/$1 ; do
        [[ -e $_rule ]] || continue
        inst_rule_programs "$_rule"
        inst_rule_group_owner "$_rule"
        inst_rule_initqueue "$_rule"
        inst_simple "$_rule"
        _found=$_rule
    done
    if [[ -n ${hostonly} ]] ; then
        for _rule in ${_target}/$1 ; do
            [[ -f $_rule ]] || continue
            inst_rule_programs "$_rule"
            inst_rule_group_owner "$_rule"
            inst_rule_initqueue "$_rule"
            inst_simple "$_rule"
            _found=$_rule
        done
    fi
    [[ $_found ]] || dinfo "Skipping udev rule: $_rule"
}

# make sure that library links are correct and up to date
build_ld_cache() {
    for f in "$dracutsysrootdir"/etc/ld.so.conf "$dracutsysrootdir"/etc/ld.so.conf.d/*; do
        [[ -f $f ]] && inst_simple "${f#$dracutsysrootdir}"
    done
    if ! ldconfig -r "$initdir" -f /etc/ld.so.conf; then
        if [[ $EUID == 0 ]]; then
            derror "ldconfig exited ungracefully"
        else
            derror "ldconfig might need uid=0 (root) for chroot()"
        fi
    fi
}

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

for f in "$@"; do
        f="${initdir}/etc/udev/rules.d/$f"
        [ -e "$f" ] || continue
        while read line || [ -n "$line" ]; do
            if [ "${line%%IMPORT PATH_ID}" != "$line" ]; then
                if [ $UDEVVERSION -ge 174 ]; then
                    printf '%sIMPORT{builtin}="path_id"\n' "${line%%IMPORT PATH_ID}"
                else
                    printf '%sIMPORT{program}="path_id %%p"\n' "${line%%IMPORT PATH_ID}"
                fi
            elif [ "${line%%IMPORT BLKID}" != "$line" ]; then
                if [ $UDEVVERSION -ge 176 ]; then
                    printf '%sIMPORT{builtin}="blkid"\n' "${line%%IMPORT BLKID}"
                else
                    printf '%sIMPORT{program}="/sbin/blkid -o udev -p $tempnode"\n' "${line%%IMPORT BLKID}"
                fi
            else
                echo "$line"
            fi
        done < "${f}" > "${f}.new"
        mv "${f}.new" "$f"
    done
}

# install function specialized for hooks
# $1 = type of hook, $2 = hook priority (lower runs first), $3 = hook
# All hooks should be POSIX/SuS compliant, they will be sourced by init.
inst_hook() {
    if ! [[ -f $3 ]]; then
        dfatal "Cannot install a hook ($3) that does not exist."
        dfatal "Aborting initrd creation."
        exit 1
    elif ! [[ "$hookdirs" == *$1* ]]; then
        dfatal "No such hook type $1. Aborting initrd creation."
        exit 1
    fi
    inst_simple "$3" "/lib/dracut/hooks/${1}/${2}-${3##*/}"
}

# install any of listed files
#
# If first argument is '-d' and second some destination path, first accessible
# source is installed into this path, otherwise it will installed in the same
# path as source.  If none of listed files was installed, function return 1.
# On first successful installation it returns with 0 status.
#
# Example:
#
# inst_any -d /bin/foo /bin/bar /bin/baz
#
# Lets assume that /bin/baz exists, so it will be installed as /bin/foo in
# initramfs.
inst_any() {
    local to f

[[ $1 = '-d' ]] && to="$2" && shift 2

for f in "$@"; do
        [[ -e $f ]] || continue
        [[ $to ]] && inst "$f" "$to" && return 0
        inst "$f" && return 0
    done

return 1
}

# inst_libdir_file [-n <pattern>] <file> [<file>...]
# Install a <file> located on a lib directory to the initramfs image
# -n <pattern> install matching files
inst_libdir_file() {
    local _files
    if [[ "$1" == "-n" ]]; then
        local _pattern=$2
        shift 2
        for _dir in $libdirs; do
            for _i in "$@"; do
                for _f in "$_dir"/$_i; do
                    [[ "$_f" =~ $_pattern ]] || continue
                    [[ -e "$_f" ]] && _files+="$_f "
                done
            done
        done
    else
        for _dir in $libdirs; do
            for _i in "$@"; do
                for _f in "$_dir"/$_i; do
                    [[ -e "$_f" ]] && _files+="$_f "
                done
            done
        done
    fi
    [[ $_files ]] && inst_multiple $_files
}

# install function decompressing the target and handling symlinks
# $@ = list of compressed (gz or bz2) files or symlinks pointing to such files
#
# Function install targets in the same paths inside overlay but decompressed
# and without extensions (.gz, .bz2).
inst_decompress() {
    local _src _cmd

for _src in $@
    do
        case ${_src} in
            *.gz) _cmd='gzip -f -d' ;;
            *.bz2) _cmd='bzip2 -d' ;;
            *) return 1 ;;
        esac
        inst_simple ${_src}
        # Decompress with chosen tool.  We assume that tool changes name e.g.
        # from 'name.gz' to 'name'.
        ${_cmd} "${initdir}${_src}"
    done
}

# It's similar to above, but if file is not compressed, performs standard
# install.
# $@ = list of files
inst_opt_decompress() {
    local _src

for _src in $@; do
        inst_decompress "${_src}" || inst "${_src}"
    done
}

# module_check <dracut module>
# execute the check() function of module-setup.sh of <dracut module>
# or the "check" script, if module-setup.sh is not found
# "check $hostonly" is called
module_check() {
    local _moddir=$(echo ${dracutbasedir}/modules.d/??${1} | { read a b; echo "$a"; })
    local _ret
    local _forced=0
    local _hostonly=$hostonly
    [ $# -eq 2 ] && _forced=$2
    [[ -d $_moddir ]] || return 1
    if [[ ! -f $_moddir/module-setup.sh ]]; then
        # if we do not have a check script, we are unconditionally included
        [[ -x $_moddir/check ]] || return 0
        [ $_forced -ne 0 ] && unset hostonly
        $_moddir/check $hostonly
        _ret=$?
    else
        unset check depends cmdline install installkernel
        check() { true; }
        . $_moddir/module-setup.sh
        is_func check || return 0
        [ $_forced -ne 0 ] && unset hostonly
        moddir=$_moddir check $hostonly
        _ret=$?
        unset check depends cmdline install installkernel
    fi
    hostonly=$_hostonly
    return $_ret
}

# module_check_mount <dracut module>
# execute the check() function of module-setup.sh of <dracut module>
# or the "check" script, if module-setup.sh is not found
# "mount_needs=1 check 0" is called
module_check_mount() {
    local _moddir=$(echo ${dracutbasedir}/modules.d/??${1} | { read a b; echo "$a"; })
    local _ret
    mount_needs=1
    [[ -d $_moddir ]] || return 1
    if [[ ! -f $_moddir/module-setup.sh ]]; then
        # if we do not have a check script, we are unconditionally included
        [[ -x $_moddir/check ]] || return 0
        mount_needs=1 $_moddir/check 0
        _ret=$?
    else
        unset check depends cmdline install installkernel
        check() { false; }
        . $_moddir/module-setup.sh
        moddir=$_moddir check 0
        _ret=$?
        unset check depends cmdline install installkernel
    fi
    unset mount_needs
    return $_ret
}

# module_depends <dracut module>
# execute the depends() function of module-setup.sh of <dracut module>
# or the "depends" script, if module-setup.sh is not found
module_depends() {
    local _moddir=$(echo ${dracutbasedir}/modules.d/??${1} | { read a b; echo "$a"; })
    local _ret
    [[ -d $_moddir ]] || return 1
    if [[ ! -f $_moddir/module-setup.sh ]]; then
        # if we do not have a check script, we have no deps
        [[ -x $_moddir/check ]] || return 0
        $_moddir/check -d
        return $?
    else
        unset check depends cmdline install installkernel
        depends() { true; }
        . $_moddir/module-setup.sh
        moddir=$_moddir depends
        _ret=$?
        unset check depends cmdline install installkernel
        return $_ret
    fi
}

# module_cmdline <dracut module>
# execute the cmdline() function of module-setup.sh of <dracut module>
# or the "cmdline" script, if module-setup.sh is not found
module_cmdline() {
    local _moddir=$(echo ${dracutbasedir}/modules.d/??${1} | { read a b; echo "$a"; })
    local _ret
    [[ -d $_moddir ]] || return 1
    if [[ ! -f $_moddir/module-setup.sh ]]; then
        [[ -x $_moddir/cmdline ]] && . "$_moddir/cmdline"
        return $?
    else
        unset check depends cmdline install installkernel
        cmdline() { true; }
        . $_moddir/module-setup.sh
        moddir=$_moddir cmdline
        _ret=$?
        unset check depends cmdline install installkernel
        return $_ret
    fi
}

# module_install <dracut module>
# execute the install() function of module-setup.sh of <dracut module>
# or the "install" script, if module-setup.sh is not found
module_install() {
    local _moddir=$(echo ${dracutbasedir}/modules.d/??${1} | { read a b; echo "$a"; })
    local _ret
    [[ -d $_moddir ]] || return 1
    if [[ ! -f $_moddir/module-setup.sh ]]; then
        [[ -x $_moddir/install ]] && . "$_moddir/install"
        return $?
    else
        unset check depends cmdline install installkernel
        install() { true; }
        . $_moddir/module-setup.sh
        moddir=$_moddir install
        _ret=$?
        unset check depends cmdline install installkernel
        return $_ret
    fi
}

# module_installkernel <dracut module>
# execute the installkernel() function of module-setup.sh of <dracut module>
# or the "installkernel" script, if module-setup.sh is not found
module_installkernel() {
    local _moddir=$(echo ${dracutbasedir}/modules.d/??${1} | { read a b; echo "$a"; })
    local _ret
    [[ -d $_moddir ]] || return 1
    if [[ ! -f $_moddir/module-setup.sh ]]; then
        [[ -x $_moddir/installkernel ]] && . "$_moddir/installkernel"
        return $?
    else
        unset check depends cmdline install installkernel
        installkernel() { true; }
        . $_moddir/module-setup.sh
        moddir=$_moddir installkernel
        _ret=$?
        unset check depends cmdline install installkernel
        return $_ret
    fi
}

# check_mount <dracut module>
# check_mount checks, if a dracut module is needed for the given
# device and filesystem types in "${host_fs_types[@]}"
check_mount() {
    local _mod=$1
    local _moddir=$(echo ${dracutbasedir}/modules.d/??${1} | { read a b; echo "$a"; })
    local _ret
    local _moddep

[ "${#host_fs_types[@]}" -le 0 ] && return 1

# If we are already scheduled to be loaded, no need to check again.
    [[ " $mods_to_load " == *\ $_mod\ * ]] && return 0
    [[ " $mods_checked_as_dep " == *\ $_mod\ * ]] && return 1

# This should never happen, but...
    [[ -d $_moddir ]] || return 1

[[ $2 ]] || mods_checked_as_dep+=" $_mod "

if [[ " $omit_dracutmodules " == *\ $_mod\ * ]]; then
        return 1
    fi

if [[ " $dracutmodules $add_dracutmodules $force_add_dracutmodules" == *\ $_mod\ * ]]; then
        module_check_mount $_mod; ret=$?

# explicit module, so also accept ret=255
        [[ $ret = 0 || $ret = 255 ]] || return 1
    else
        # module not in our list
        if [[ $dracutmodules = all ]]; then
            # check, if we can and should install this module
            module_check_mount $_mod || return 1
        else
            # skip this module
            return 1
        fi
    fi

for _moddep in $(module_depends $_mod); do
        # handle deps as if they were manually added
        [[ " $dracutmodules " == *\ $_mod\ * ]] \
            && [[ " $dracutmodules " != *\ $_moddep\ * ]] \
            && dracutmodules+=" $_moddep "
        [[ " $add_dracutmodules " == *\ $_mod\ * ]] \
            && [[ " $add_dracutmodules " != *\ $_moddep\ * ]] \
            && add_dracutmodules+=" $_moddep "
        [[ " $force_add_dracutmodules " == *\ $_mod\ * ]] \
            && [[ " $force_add_dracutmodules " != *\ $_moddep\ * ]] \
            && force_add_dracutmodules+=" $_moddep "
        # if a module we depend on fail, fail also
        if ! check_module $_moddep; then
            derror "dracut module '$_mod' depends on '$_moddep', which can't be installed"
            return 1
        fi
    done

[[ " $mods_to_load " == *\ $_mod\ * ]] || \
        mods_to_load+=" $_mod "

return 0
}

# check_module <dracut module> [<use_as_dep>]
# check if a dracut module is to be used in the initramfs process
# if <use_as_dep> is set, then the process also keeps track
# that the modules were checked for the dependency tracking process
check_module() {
    local _mod=$1
    local _moddir=$(echo ${dracutbasedir}/modules.d/??${1} | { read a b; echo "$a"; })
    local _ret
    local _moddep
    # If we are already scheduled to be loaded, no need to check again.
    [[ " $mods_to_load " == *\ $_mod\ * ]] && return 0
    [[ " $mods_checked_as_dep " == *\ $_mod\ * ]] && return 1

# This should never happen, but...
    [[ -d $_moddir ]] || return 1

[[ $2 ]] || mods_checked_as_dep+=" $_mod "

if [[ " $omit_dracutmodules " == *\ $_mod\ * ]]; then
        dinfo "dracut module '$_mod' will not be installed, because it's in the list to be omitted!"
        return 1
    fi

if [[ " $dracutmodules $add_dracutmodules $force_add_dracutmodules" == *\ $_mod\ * ]]; then
        if [[ " $dracutmodules $force_add_dracutmodules " == *\ $_mod\ * ]]; then
            module_check $_mod 1; ret=$?
        else
            module_check $_mod 0; ret=$?
        fi
        # explicit module, so also accept ret=255
        [[ $ret = 0 || $ret = 255 ]] || return 1
    else
        # module not in our list
        if [[ $dracutmodules = all ]]; then
            # check, if we can and should install this module
            module_check $_mod; ret=$?
            if [[ $ret != 0 ]]; then
                [[ $2 ]] && return 1
                [[ $ret != 255 ]] && return 1
            fi
        else
            # skip this module
            return 1
        fi
    fi

[[ " $mods_to_load " == *\ $_mod\ * ]] || \
        mods_to_load+=" $_mod "

return 0
}

# for_each_module_dir <func>
# execute "<func> <dracut module> 1"
for_each_module_dir() {
    local _modcheck
    local _mod
    local _moddir
    local _func
    _func=$1
    for _moddir in "$dracutbasedir/modules.d"/[0-9][0-9]*; do
        [[ -d $_moddir ]] || continue;
        [[ -e $_moddir/install || -e $_moddir/installkernel || \
            -e $_moddir/module-setup.sh ]] || continue
        _mod=${_moddir##*/}; _mod=${_mod#[0-9][0-9]}
        $_func $_mod 1
    done

# Report any missing dracut modules, the user has specified
    _modcheck="$add_dracutmodules $force_add_dracutmodules"
    [[ $dracutmodules != all ]] && _modcheck="$_modcheck $dracutmodules"
    for _mod in $_modcheck; do
        [[ " $mods_to_load " == *\ $_mod\ * ]] && continue

[[ " $force_add_dracutmodules " != *\ $_mod\ * ]] \
            && [[ " $dracutmodules " != *\ $_mod\ * ]] \
            && [[ " $omit_dracutmodules " == *\ $_mod\ * ]] \
            && continue

derror "dracut module '$_mod' cannot be found or installed."
        [[ " $force_add_dracutmodules " == *\ $_mod\ * ]] && exit 1
        [[ " $dracutmodules " == *\ $_mod\ * ]] && exit 1
        [[ " $add_dracutmodules " == *\ $_mod\ * ]] && exit 1
    done
}

# Install a single kernel module along with any firmware it may require.
# $1 = full path to kernel module to install
install_kmod_with_fw() {
    # no need to go further if the module is already installed

[[ -e "${initdir}/lib/modules/$kernel/${1##*/lib/modules/$kernel/}" ]] \
        && return 0

if [[ $omit_drivers ]]; then
        local _kmod=${1##*/}
        _kmod=${_kmod%.ko*}
        _kmod=${_kmod/-/_}
        if [[ "$_kmod" =~ $omit_drivers ]]; then
            dinfo "Omitting driver $_kmod"
            return 0
        fi
        if [[ "${1##*/lib/modules/$kernel/}" =~ $omit_drivers ]]; then
            dinfo "Omitting driver $_kmod"
            return 0
        fi
    fi

if [[ $silent_omit_drivers ]]; then
        local _kmod=${1##*/}
        _kmod=${_kmod%.ko*}
        _kmod=${_kmod/-/_}
        [[ "$_kmod" =~ $silent_omit_drivers ]] && return 0
        [[ "${1##*/lib/modules/$kernel/}" =~ $silent_omit_drivers ]] && return 0
    fi

inst_simple "$1" "/lib/modules/$kernel/${1##*/lib/modules/$kernel/}"
    ret=$?
    (($ret != 0)) && return $ret

local _modname=${1##*/} _fwdir _found _fw
    _modname=${_modname%.ko*}
    for _fw in $(modinfo -k $kernel -F firmware $1 2>/dev/null); do
        _found=''
        for _fwdir in $fw_dir; do
            [[ -d $_fwdir && -f $_fwdir/$_fw ]] || continue
            inst_simple "$_fwdir/$_fw" "/lib/firmware/$_fw"
            _found=yes
        done
        if [[ $_found != yes ]]; then
            if ! [[ -d $(echo /sys/module/${_modname//-/_}|{ read a b; echo $a; }) ]]; then
                dinfo "Possible missing firmware \"${_fw}\" for kernel module" \
                    "\"${_modname}.ko\""
            else
                dwarn "Possible missing firmware \"${_fw}\" for kernel module" \
                    "\"${_modname}.ko\""
            fi
        fi
    done
    return 0
}

# Do something with all the dependencies of a kernel module.
# Note that kernel modules depend on themselves using the technique we use
# $1 = function to call for each dependency we find
#      It will be passed the full path to the found kernel module
# $2 = module to get dependencies for
# rest of args = arguments to modprobe
# _fderr specifies FD passed from surrounding scope
for_each_kmod_dep() {
    local _func=$1 _kmod=$2 _cmd _modpath _options
    shift 2
    modprobe "$@" --ignore-install --show-depends $_kmod 2>&${_fderr} | (
        while read _cmd _modpath _options || [ -n "$_cmd" ]; do
            [[ $_cmd = insmod ]] || continue
            $_func ${_modpath} || exit $?
        done
    )
}

dracut_kernel_post() {
    for _f in modules.builtin.bin modules.builtin modules.order; do
        [[ -e $srcmods/$_f ]] && inst_simple "$srcmods/$_f" "/lib/modules/$kernel/$_f"
    done

# generate module dependencies for the initrd
    if [[ -d $initdir/lib/modules/$kernel ]] && \
        ! depmod -a -b "$initdir" $kernel; then
        dfatal "\"depmod -a $kernel\" failed."
        exit 1
    fi

}

instmods() {
    # instmods [-c [-s]] <kernel module> [<kernel module> ... ]
    # instmods [-c [-s]] <kernel subsystem>
    # install kernel modules along with all their dependencies.
    # <kernel subsystem> can be e.g. "=block" or "=drivers/usb/storage"
    # -c check
    # -s silent
    local _optional="-o"
    local _silent
    local _ret

[[ $no_kernel = yes ]] && return

if [[ $1 = '-c' ]]; then
        unset _optional
        shift
    fi
    if [[ $1 = '-s' ]]; then
        _silent=1
        shift
    fi

if (($# == 0)); then
        read -r -d '' -a args
        set -- "${args[@]}"
    fi

if (($# == 0)); then
        return 0
    fi

$DRACUT_INSTALL \
        ${initdir:+-D "$initdir"} \
        ${loginstall:+-L "$loginstall"} \
        ${hostonly:+-H} \
        ${omit_drivers:+-N "$omit_drivers"} \
        ${srcmods:+--kerneldir "$srcmods"} \
        ${_optional:+-o} \
        ${_silent:+--silent} \
        -m "$@"
    _ret=$?

if (($_ret != 0)) && [[ -z "$_silent" ]]; then
        derror "FAILED: " \
            $DRACUT_INSTALL \
                ${initdir:+-D "$initdir"} \
                ${loginstall:+-L "$loginstall"} \
                ${hostonly:+-H} \
                ${omit_drivers:+-N "$omit_drivers"} \
                ${srcmods:+--kerneldir "$srcmods"} \
                ${_optional:+-o} \
                ${_silent:+--silent} \
                -m "$@"
    fi

[[ "$optional" ]] && return 0
    return $_ret
}

if [[ "$(ln --help)" == *--relative* ]]; then
    ln_r() {
        ln -sfnr "${initdir}/$1" "${initdir}/$2"
    }
else
    ln_r() {
        local _source=$1
        local _dest=$2
        [[ -d "${_dest%/*}" ]] && _dest=$(readlink -f "${_dest%/*}")/${_dest##*/}
        ln -sfn -- "$(convert_abs_rel "${_dest}" "${_source}")" "${initdir}/${_dest}"
    }
fi

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