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From 561eb42f39e26cd43f1df1484bba5883048e3178 Mon Sep 17 00:00:00 2001
From: Harald Hoyer <harald@redhat.com>
Date: Fri, 13 Nov 2015 13:06:01 +0100
Subject: [PATCH] reduce dracut-functions.sh and add to dracut-init.sh

move all dracut specific functions to dracut-init.sh
---
 dracut-functions.sh | 1148 +--------------------------------------------------
 dracut-init.sh      | 1144 +++++++++++++++++++++++++++++++++++++++++++++++++-
 2 files changed, 1146 insertions(+), 1146 deletions(-)

diff --git a/dracut-functions.sh b/dracut-functions.sh
index 1c6d327..59747ec 100755
--- a/dracut-functions.sh
+++ b/dracut-functions.sh
@@ -19,11 +19,12 @@
 #
 export LC_MESSAGES=C
 
-if [[ $DRACUT_KERNEL_LAZY ]] && ! [[ $DRACUT_KERNEL_LAZY_HASHDIR ]]; then
-    if [[ -d "$initdir/.kernelmodseen" ]]; then
-        DRACUT_KERNEL_LAZY_HASHDIR="$initdir/.kernelmodseen"
-    fi
-fi
+# is_func <command>
+# Check whether $1 is a function.
+is_func() {
+    [[ "$(type -t "$1")" = "function" ]]
+}
+
 
 # Generic substring function.  If $2 is in $1, return 0.
 strstr() { [[ $1 = *"$2"* ]]; }
@@ -36,51 +37,6 @@ str_starts() { [ "${1#"$2"*}" != "$1" ]; }
 # returns OK if $1 contains literal string $2 at the end, and isn't empty
 str_ends() { [ "${1%*"$2"}" != "$1" ]; }
 
-# 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 '$@'!"
-        return 1
-    fi
-
-    return 0
-}
-
 # find a binary.  If we were not passed the full path directly,
 # search in the usual places to find the binary.
 find_binary() {
@@ -94,39 +50,11 @@ find_binary() {
     type -P "${1##*/}"
 }
 
-if ! [[ $dracutbasedir ]]; then
-    dracutbasedir=${BASH_SOURCE[0]%/*}
-    [[ $dracutbasedir = dracut-functions* ]] && dracutbasedir="."
-    [[ $dracutbasedir ]] || dracutbasedir="."
-    dracutbasedir="$(readlink -f $dracutbasedir)"
-fi
-
 ldconfig_paths()
 {
     ldconfig -pN 2>/dev/null | grep -E -v '/(lib|lib64|usr/lib|usr/lib64)/[^/]*$' | sed -n 's,.* => \(.*\)/.*,\1,p' | sort | uniq
 }
 
-# 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
-
-if ! [[ $kernel ]]; then
-    kernel=$(uname -r)
-    export kernel
-fi
-
 # Version comparision function.  Assumes Linux style version scheme.
 # $1 = version a
 # $2 = comparision op (gt, ge, eq, le, lt, ne)
@@ -154,50 +82,6 @@ vercmp() {
     esac
 }
 
-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
-
-# is_func <command>
-# Check whether $1 is a function.
-is_func() {
-    [[ "$(type -t "$1")" = "function" ]]
-}
-
-if ! is_func dinfo >/dev/null 2>&1; then
-    . "$dracutbasedir/dracut-logger.sh"
-    dlog_init
-fi
-
-if ! [[ $initdir ]]; then
-    dfatal "initdir not set"
-    exit 1
-fi
-
-# export standard hookdirs
-[[ $hookdirs ]] || {
-    hookdirs="cmdline pre-udev pre-trigger netroot "
-    hookdirs+="initqueue initqueue/settled initqueue/online initqueue/finished initqueue/timeout "
-    hookdirs+="pre-mount pre-pivot cleanup mount "
-    hookdirs+="emergency shutdown-emergency pre-shutdown shutdown "
-    export hookdirs
-}
-
-dracut_need_initqueue() {
-    >"$initdir/lib/dracut/need-initqueue"
-}
-
-dracut_module_included() {
-    [[ " $mods_to_load $modules_loaded " == *\ $*\ * ]]
-}
-
 # Create all subdirectories for given path without creating the last element.
 # $1 = path
 mksubdirs() {
@@ -728,1026 +612,6 @@ fs_get_option() {
     done
 }
 
-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
-
-[[ $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 $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 $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 $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 $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 $DRACUT_INSTALL ${initdir:+-D "$initdir"} -a ${loginstall:+-L "$loginstall"} ${DRACUT_RESOLVE_DEPS:+-l}  ${DRACUT_FIPS_MODE:+-f} ${_hostonly_install:+-H} "$@" || :
-    return $_ret
-}
-
-dracut_install() {
-    inst_multiple "$@"
-}
-
-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 $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 $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 $DRACUT_INSTALL ${initdir:+-D "$initdir"} ${loginstall:+-L "$loginstall"} ${DRACUT_RESOLVE_DEPS:+-l}  ${DRACUT_FIPS_MODE:+-f} "$@" || :
-}
-
-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
-
-    if grep -qE 'PROGRAM==?"[^ "]+' "$1"; then
-        for _prog in $(grep -E 'PROGRAM==?"[^ "]+' "$1" | sed -r 's/.*PROGRAM==?"([^ "]+).*/\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
-    fi
-    if grep -qE 'RUN[+=]=?"[^ "]+' "$1"; then
-        for _prog in $(grep -E 'RUN[+=]=?"[^ "]+' "$1" | sed -r 's/.*RUN[+=]=?"([^ "]+).*/\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
-    fi
-    if grep -qE 'IMPORT\{program\}==?"[^ "]+' "$1"; then
-        for _prog in $(grep -E 'IMPORT\{program\}==?"[^ "]+' "$1" | sed -r 's/.*IMPORT\{program\}==?"([^ "]+).*/\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
-    fi
-}
-
-# attempt to install any programs specified in a udev rule
-inst_rule_group_owner() {
-    local i
-
-    if grep -qE 'OWNER=?"[^ "]+' "$1"; then
-        for i in $(grep -E 'OWNER=?"[^ "]+' "$1" | sed -r 's/.*OWNER=?"([^ "]+).*/\1/'); do
-            if ! egrep -q "^$i:" "$initdir/etc/passwd" 2>/dev/null; then
-                egrep "^$i:" /etc/passwd 2>/dev/null >> "$initdir/etc/passwd"
-            fi
-        done
-    fi
-    if grep -qE 'GROUP=?"[^ "]+' "$1"; then
-        for i in $(grep -E 'GROUP=?"[^ "]+' "$1" | sed -r 's/.*GROUP=?"([^ "]+).*/\1/'); do
-            if ! egrep -q "^$i:" "$initdir/etc/group" 2>/dev/null; then
-                egrep "^$i:" /etc/group 2>/dev/null >> "$initdir/etc/group"
-            fi
-        done
-    fi
-}
-
-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: $_rule"
-}
-
-prepare_udev_rules() {
-    [ -z "$UDEVVERSION" ] && export UDEVVERSION=$(udevadm --version)
-
-    for f in "$@"; 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 [[ $DRACUT_KERNEL_LAZY_HASHDIR ]] && [[ -e "$DRACUT_KERNEL_LAZY_HASHDIR/${1##*/}" ]]; then
-        read ret < "$DRACUT_KERNEL_LAZY_HASHDIR/${1##*/}"
-        return $ret
-    fi
-
-    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=$?
-    [[ $DRACUT_KERNEL_LAZY_HASHDIR ]] && \
-        [[ -d "$DRACUT_KERNEL_LAZY_HASHDIR" ]] && \
-        echo $ret > "$DRACUT_KERNEL_LAZY_HASHDIR/${1##*/}"
-    (($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 $?
-        done
-    )
-}
-
-dracut_kernel_post() {
-    local _moddirname=${srcmods%%/lib/modules/*}
-    local _pid
-
-    if [[ $DRACUT_KERNEL_LAZY_HASHDIR ]] && [[ -f "$DRACUT_KERNEL_LAZY_HASHDIR/lazylist" ]]; then
-        xargs -r modprobe -a ${_moddirname:+-d ${_moddirname}/} \
-            --ignore-install --show-depends --set-version $kernel \
-            < "$DRACUT_KERNEL_LAZY_HASHDIR/lazylist" 2>/dev/null \
-            | sort -u \
-            | while read _cmd _modpath _options || [ -n "$_cmd" ]; do
-            [[ $_cmd = insmod ]] || continue
-            echo "$_modpath"
-        done > "$DRACUT_KERNEL_LAZY_HASHDIR/lazylist.dep"
-
-        (
-            if [[ $DRACUT_INSTALL ]] && [[ -z $_moddirname ]]; then
-                xargs -r $DRACUT_INSTALL ${initdir:+-D "$initdir"} ${loginstall:+-L "$loginstall"} -a < "$DRACUT_KERNEL_LAZY_HASHDIR/lazylist.dep"
-            else
-                while read _modpath || [ -n "$_modpath" ]; do
-                    local _destpath=$_modpath
-                    [[ $_moddirname ]] && _destpath=${_destpath##$_moddirname/}
-                    _destpath=${_destpath##*/lib/modules/$kernel/}
-                    inst_simple "$_modpath" "/lib/modules/$kernel/${_destpath}" || exit $?
-                done < "$DRACUT_KERNEL_LAZY_HASHDIR/lazylist.dep"
-            fi
-        ) &
-        _pid=$(jobs -p | while read a  || [ -n "$a" ]; do printf ":$a";done)
-        _pid=${_pid##*:}
-
-        if [[ $DRACUT_INSTALL ]]; then
-            xargs -r modinfo -k $kernel -F firmware < "$DRACUT_KERNEL_LAZY_HASHDIR/lazylist.dep" \
-                | while read line || [ -n "$line" ]; do
-                for _fwdir in $fw_dir; do
-                    echo $_fwdir/$line;
-                done;
-            done | xargs -r $DRACUT_INSTALL ${initdir:+-D "$initdir"} ${loginstall:+-L "$loginstall"} -a -o
-        else
-            for _fw in $(xargs -r modinfo -k $kernel -F firmware < "$DRACUT_KERNEL_LAZY_HASHDIR/lazylist.dep"); do
-                for _fwdir in $fw_dir; do
-                    [[ -d $_fwdir && -f $_fwdir/$_fw ]] || continue
-                    inst_simple "$_fwdir/$_fw" "/lib/firmware/$_fw"
-                    break
-                done
-            done
-        fi
-
-        wait $_pid
-    fi
-
-    for _f in modules.builtin.bin modules.builtin modules.order; do
-        [[ $srcmods/$_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
-
-    [[ $DRACUT_KERNEL_LAZY_HASHDIR ]] && rm -fr -- "$DRACUT_KERNEL_LAZY_HASHDIR"
-}
-
-[[ "$kernel_current" ]] || export kernel_current=$(uname -r)
-
-module_is_host_only() {
-    local _mod=$1
-    local _modenc a i _k _s _v _aliases
-    _mod=${_mod##*/}
-    _mod=${_mod%.ko*}
-    _modenc=${_mod//-/_}
-
-    [[ " $add_drivers " == *\ ${_mod}\ * ]] && return 0
-
-    # check if module is loaded
-    [[ ${host_modules["$_modenc"]} ]] && return 0
-
-    [[ "$kernel_current" ]] || export kernel_current=$(uname -r)
-
-    if [[ "$kernel_current" != "$kernel" ]]; then
-        # check if module is loadable on the current kernel
-        # this covers the case, where a new module is introduced
-        # or a module was renamed
-        # or a module changed from builtin to a module
-
-        if [[ -d /lib/modules/$kernel_current ]]; then
-            # if the modinfo can be parsed, but the module
-            # is not loaded, then we can safely return 1
-            modinfo -F filename "$_mod" &>/dev/null && return 1
-        fi
-
-        _aliases=$(modinfo -k $kernel -F alias $_mod 2>/dev/null)
-
-        # if the module has no aliases, install it
-        [[ $_aliases ]] || return 0
-
-        # finally check all modalias
-        for a in $_aliases; do
-            for i in "${!host_modalias[@]}"; do
-                [[ $i == $a ]]  && return 0
-            done
-        done
-
-    fi
-
-    return 1
-}
-
-find_kernel_modules_by_path () {
-    local _OLDIFS
-
-    [[ -f "$srcmods/modules.dep" ]] || return 0
-
-    _OLDIFS=$IFS
-    IFS=:
-    while read a rest || [ -n "$a" ]; do
-        [[ $a = */$1/* ]] || [[ $a = updates/* ]] || continue
-        printf "%s\n" "$srcmods/$a"
-    done < "$srcmods/modules.dep"
-    IFS=$_OLDIFS
-    return 0
-}
-
-find_kernel_modules () {
-    find_kernel_modules_by_path  drivers
-}
-
-# 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"
-instmods() {
-    [[ $no_kernel = yes ]] && return
-    # called [sub]functions inherit _fderr
-    local _fderr=9
-    local _check=no
-    local _silent=no
-    if [[ $1 = '-c' ]]; then
-        _check=yes
-        shift
-    fi
-
-    if [[ $1 = '-s' ]]; then
-        _silent=yes
-        shift
-    fi
-
-    function inst1mod() {
-        local _ret=0 _mod="$1"
-        case $_mod in
-            =*)
-                ( [[ "$_mpargs" ]] && echo $_mpargs
-                    find_kernel_modules_by_path "${_mod#=}" ) \
-                        | instmods
-                ((_ret+=$?))
-                ;;
-            --*) _mpargs+=" $_mod" ;;
-            *)
-                _mod=${_mod##*/}
-                # Check for aliased modules
-                _modalias=$(modinfo -k $kernel -F filename $_mod 2> /dev/null)
-                _modalias=${_modalias%.ko*}
-                if [[ $_modalias ]] && [ "${_modalias##*/}" != "${_mod%.ko*}" ] ; then
-                    _mod=${_modalias##*/}
-                fi
-
-                # if we are already installed, skip this module and go on
-                # to the next one.
-                if [[ $DRACUT_KERNEL_LAZY_HASHDIR ]] && \
-                    [[ -f "$DRACUT_KERNEL_LAZY_HASHDIR/${_mod%.ko*}" ]]; then
-                    read _ret <"$DRACUT_KERNEL_LAZY_HASHDIR/${_mod%.ko*}"
-                    return $_ret
-                fi
-
-                _mod=${_mod/-/_}
-                if [[ $omit_drivers ]] && [[ "$_mod" =~ $omit_drivers ]]; then
-                    dinfo "Omitting driver ${_mod##$srcmods}"
-                    return 0
-                fi
-
-                # If we are building a host-specific initramfs and this
-                # module is not already loaded, move on to the next one.
-                [[ $hostonly ]] \
-                    && ! module_is_host_only "$_mod" \
-                    && return 0
-
-                if [[ "$_check" = "yes" ]] || ! [[ $DRACUT_KERNEL_LAZY_HASHDIR ]]; then
-                    # We use '-d' option in modprobe only if modules prefix path
-                    # differs from default '/'.  This allows us to use dracut with
-                    # old version of modprobe which doesn't have '-d' option.
-                    local _moddirname=${srcmods%%/lib/modules/*}
-                    [[ -n ${_moddirname} ]] && _moddirname="-d ${_moddirname}/"
-
-                    # ok, load the module, all its dependencies, and any firmware
-                    # it may require
-                    for_each_kmod_dep install_kmod_with_fw $_mod \
-                        --set-version $kernel ${_moddirname} $_mpargs
-                    ((_ret+=$?))
-                else
-                    [[ $DRACUT_KERNEL_LAZY_HASHDIR ]] && \
-                        echo ${_mod%.ko*} >> "$DRACUT_KERNEL_LAZY_HASHDIR/lazylist"
-                fi
-                ;;
-        esac
-        return $_ret
-    }
-
-    function instmods_1() {
-        local _mod _mpargs
-        if (($# == 0)); then  # filenames from stdin
-            while read _mod || [ -n "$_mod" ]; do
-                inst1mod "${_mod%.ko*}" || {
-                    if [[ "$_check" == "yes" ]] && [[ "$_silent" == "no" ]]; then
-                        dfatal "Failed to install module $_mod"
-                    fi
-                }
-            done
-        fi
-        while (($# > 0)); do  # filenames as arguments
-            inst1mod ${1%.ko*} || {
-                if [[ "$_check" == "yes" ]] && [[ "$_silent" == "no" ]]; then
-                    dfatal "Failed to install module $1"
-                fi
-            }
-            shift
-        done
-        return 0
-    }
-
-    local _ret _filter_not_found='FATAL: Module .* not found.'
-    # Capture all stderr from modprobe to _fderr. We could use {var}>...
-    # redirections, but that would make dracut require bash4 at least.
-    eval "( instmods_1 \"\$@\" ) ${_fderr}>&1" \
-        | while read line || [ -n "$line" ]; do [[ "$line" =~ $_filter_not_found ]] || echo $line;done | derror
-    _ret=$?
-    return $_ret
-}
-
 check_kernel_config()
 {
     local _config_opt="$1"
diff --git a/dracut-init.sh b/dracut-init.sh
index 469e42a..d254e76 100644
--- a/dracut-init.sh
+++ b/dracut-init.sh
@@ -1,6 +1,6 @@
 #!/bin/bash
 #
-# functions used by dracut and other tools.
+# functions used only by dracut and dracut modules
 #
 # Copyright 2005-2009 Red Hat, Inc.  All rights reserved.
 #
@@ -19,6 +19,33 @@
 #
 export LC_MESSAGES=C
 
+# 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 [[ $DRACUT_KERNEL_LAZY ]] && ! [[ $DRACUT_KERNEL_LAZY_HASHDIR ]]; then
     if ! [[ -d "$initdir/.kernelmodseen" ]]; then
         mkdir -p "$initdir/.kernelmodseen"
@@ -26,9 +53,1118 @@ if [[ $DRACUT_KERNEL_LAZY ]] && ! [[ $DRACUT_KERNEL_LAZY_HASHDIR ]]; then
     DRACUT_KERNEL_LAZY_HASHDIR="$initdir/.kernelmodseen"
 fi
 
-if [[ $initdir ]] && ! [[ -d $initdir ]]; then
-    mkdir -p "$initdir"
+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
+
+# 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
+}
+
+# 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
 
-[[ $dracutbasedir ]] || export dracutbasedir=${BASH_SOURCE%/*}
 . $dracutbasedir/dracut-functions.sh
+
+# helper function for check() in module-setup.sh
+# to check for required installed binaries
+# issues a standardized warning message
+require_binaries() {
+    local _module_name="${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 " == *\ $*\ * ]]
+}
+
+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
+
+[[ $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 $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 $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 $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 $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 $DRACUT_INSTALL ${initdir:+-D "$initdir"} -a ${loginstall:+-L "$loginstall"} ${DRACUT_RESOLVE_DEPS:+-l}  ${DRACUT_FIPS_MODE:+-f} ${_hostonly_install:+-H} "$@" || :
+    return $_ret
+}
+
+dracut_install() {
+    inst_multiple "$@"
+}
+
+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 $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 $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 $DRACUT_INSTALL ${initdir:+-D "$initdir"} ${loginstall:+-L "$loginstall"} ${DRACUT_RESOLVE_DEPS:+-l}  ${DRACUT_FIPS_MODE:+-f} "$@" || :
+}
+
+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
+
+    if grep -qE 'PROGRAM==?"[^ "]+' "$1"; then
+        for _prog in $(grep -E 'PROGRAM==?"[^ "]+' "$1" | sed -r 's/.*PROGRAM==?"([^ "]+).*/\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
+    fi
+    if grep -qE 'RUN[+=]=?"[^ "]+' "$1"; then
+        for _prog in $(grep -E 'RUN[+=]=?"[^ "]+' "$1" | sed -r 's/.*RUN[+=]=?"([^ "]+).*/\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
+    fi
+    if grep -qE 'IMPORT\{program\}==?"[^ "]+' "$1"; then
+        for _prog in $(grep -E 'IMPORT\{program\}==?"[^ "]+' "$1" | sed -r 's/.*IMPORT\{program\}==?"([^ "]+).*/\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
+    fi
+}
+
+# attempt to install any programs specified in a udev rule
+inst_rule_group_owner() {
+    local i
+
+    if grep -qE 'OWNER=?"[^ "]+' "$1"; then
+        for i in $(grep -E 'OWNER=?"[^ "]+' "$1" | sed -r 's/.*OWNER=?"([^ "]+).*/\1/'); do
+            if ! egrep -q "^$i:" "$initdir/etc/passwd" 2>/dev/null; then
+                egrep "^$i:" /etc/passwd 2>/dev/null >> "$initdir/etc/passwd"
+            fi
+        done
+    fi
+    if grep -qE 'GROUP=?"[^ "]+' "$1"; then
+        for i in $(grep -E 'GROUP=?"[^ "]+' "$1" | sed -r 's/.*GROUP=?"([^ "]+).*/\1/'); do
+            if ! egrep -q "^$i:" "$initdir/etc/group" 2>/dev/null; then
+                egrep "^$i:" /etc/group 2>/dev/null >> "$initdir/etc/group"
+            fi
+        done
+    fi
+}
+
+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: $_rule"
+}
+
+prepare_udev_rules() {
+    [ -z "$UDEVVERSION" ] && export UDEVVERSION=$(udevadm --version)
+
+    for f in "$@"; 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 [[ $DRACUT_KERNEL_LAZY_HASHDIR ]] && [[ -e "$DRACUT_KERNEL_LAZY_HASHDIR/${1##*/}" ]]; then
+        read ret < "$DRACUT_KERNEL_LAZY_HASHDIR/${1##*/}"
+        return $ret
+    fi
+
+    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=$?
+    [[ $DRACUT_KERNEL_LAZY_HASHDIR ]] && \
+        [[ -d "$DRACUT_KERNEL_LAZY_HASHDIR" ]] && \
+        echo $ret > "$DRACUT_KERNEL_LAZY_HASHDIR/${1##*/}"
+    (($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 $?
+        done
+    )
+}
+
+dracut_kernel_post() {
+    local _moddirname=${srcmods%%/lib/modules/*}
+    local _pid
+
+    if [[ $DRACUT_KERNEL_LAZY_HASHDIR ]] && [[ -f "$DRACUT_KERNEL_LAZY_HASHDIR/lazylist" ]]; then
+        xargs -r modprobe -a ${_moddirname:+-d ${_moddirname}/} \
+            --ignore-install --show-depends --set-version $kernel \
+            < "$DRACUT_KERNEL_LAZY_HASHDIR/lazylist" 2>/dev/null \
+            | sort -u \
+            | while read _cmd _modpath _options || [ -n "$_cmd" ]; do
+            [[ $_cmd = insmod ]] || continue
+            echo "$_modpath"
+        done > "$DRACUT_KERNEL_LAZY_HASHDIR/lazylist.dep"
+
+        (
+            if [[ $DRACUT_INSTALL ]] && [[ -z $_moddirname ]]; then
+                xargs -r $DRACUT_INSTALL ${initdir:+-D "$initdir"} ${loginstall:+-L "$loginstall"} -a < "$DRACUT_KERNEL_LAZY_HASHDIR/lazylist.dep"
+            else
+                while read _modpath || [ -n "$_modpath" ]; do
+                    local _destpath=$_modpath
+                    [[ $_moddirname ]] && _destpath=${_destpath##$_moddirname/}
+                    _destpath=${_destpath##*/lib/modules/$kernel/}
+                    inst_simple "$_modpath" "/lib/modules/$kernel/${_destpath}" || exit $?
+                done < "$DRACUT_KERNEL_LAZY_HASHDIR/lazylist.dep"
+            fi
+        ) &
+        _pid=$(jobs -p | while read a  || [ -n "$a" ]; do printf ":$a";done)
+        _pid=${_pid##*:}
+
+        if [[ $DRACUT_INSTALL ]]; then
+            xargs -r modinfo -k $kernel -F firmware < "$DRACUT_KERNEL_LAZY_HASHDIR/lazylist.dep" \
+                | while read line || [ -n "$line" ]; do
+                for _fwdir in $fw_dir; do
+                    echo $_fwdir/$line;
+                done;
+            done | xargs -r $DRACUT_INSTALL ${initdir:+-D "$initdir"} ${loginstall:+-L "$loginstall"} -a -o
+        else
+            for _fw in $(xargs -r modinfo -k $kernel -F firmware < "$DRACUT_KERNEL_LAZY_HASHDIR/lazylist.dep"); do
+                for _fwdir in $fw_dir; do
+                    [[ -d $_fwdir && -f $_fwdir/$_fw ]] || continue
+                    inst_simple "$_fwdir/$_fw" "/lib/firmware/$_fw"
+                    break
+                done
+            done
+        fi
+
+        wait $_pid
+    fi
+
+    for _f in modules.builtin.bin modules.builtin modules.order; do
+        [[ $srcmods/$_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
+
+    [[ $DRACUT_KERNEL_LAZY_HASHDIR ]] && rm -fr -- "$DRACUT_KERNEL_LAZY_HASHDIR"
+}
+
+[[ "$kernel_current" ]] || export kernel_current=$(uname -r)
+
+module_is_host_only() {
+    local _mod=$1
+    local _modenc a i _k _s _v _aliases
+    _mod=${_mod##*/}
+    _mod=${_mod%.ko*}
+    _modenc=${_mod//-/_}
+
+    [[ " $add_drivers " == *\ ${_mod}\ * ]] && return 0
+
+    # check if module is loaded
+    [[ ${host_modules["$_modenc"]} ]] && return 0
+
+    [[ "$kernel_current" ]] || export kernel_current=$(uname -r)
+
+    if [[ "$kernel_current" != "$kernel" ]]; then
+        # check if module is loadable on the current kernel
+        # this covers the case, where a new module is introduced
+        # or a module was renamed
+        # or a module changed from builtin to a module
+
+        if [[ -d /lib/modules/$kernel_current ]]; then
+            # if the modinfo can be parsed, but the module
+            # is not loaded, then we can safely return 1
+            modinfo -F filename "$_mod" &>/dev/null && return 1
+        fi
+
+        _aliases=$(modinfo -k $kernel -F alias $_mod 2>/dev/null)
+
+        # if the module has no aliases, install it
+        [[ $_aliases ]] || return 0
+
+        # finally check all modalias
+        for a in $_aliases; do
+            for i in "${!host_modalias[@]}"; do
+                [[ $i == $a ]]  && return 0
+            done
+        done
+
+    fi
+
+    return 1
+}
+
+find_kernel_modules_by_path () {
+    local _OLDIFS
+
+    [[ -f "$srcmods/modules.dep" ]] || return 0
+
+    _OLDIFS=$IFS
+    IFS=:
+    while read a rest || [ -n "$a" ]; do
+        [[ $a = */$1/* ]] || [[ $a = updates/* ]] || continue
+        printf "%s\n" "$srcmods/$a"
+    done < "$srcmods/modules.dep"
+    IFS=$_OLDIFS
+    return 0
+}
+
+find_kernel_modules () {
+    find_kernel_modules_by_path  drivers
+}
+
+# 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"
+instmods() {
+    [[ $no_kernel = yes ]] && return
+    # called [sub]functions inherit _fderr
+    local _fderr=9
+    local _check=no
+    local _silent=no
+    if [[ $1 = '-c' ]]; then
+        _check=yes
+        shift
+    fi
+
+    if [[ $1 = '-s' ]]; then
+        _silent=yes
+        shift
+    fi
+
+    function inst1mod() {
+        local _ret=0 _mod="$1"
+        case $_mod in
+            =*)
+                ( [[ "$_mpargs" ]] && echo $_mpargs
+                    find_kernel_modules_by_path "${_mod#=}" ) \
+                        | instmods
+                ((_ret+=$?))
+                ;;
+            --*) _mpargs+=" $_mod" ;;
+            *)
+                _mod=${_mod##*/}
+                # Check for aliased modules
+                _modalias=$(modinfo -k $kernel -F filename $_mod 2> /dev/null)
+                _modalias=${_modalias%.ko*}
+                if [[ $_modalias ]] && [ "${_modalias##*/}" != "${_mod%.ko*}" ] ; then
+                    _mod=${_modalias##*/}
+                fi
+
+                # if we are already installed, skip this module and go on
+                # to the next one.
+                if [[ $DRACUT_KERNEL_LAZY_HASHDIR ]] && \
+                    [[ -f "$DRACUT_KERNEL_LAZY_HASHDIR/${_mod%.ko*}" ]]; then
+                    read _ret <"$DRACUT_KERNEL_LAZY_HASHDIR/${_mod%.ko*}"
+                    return $_ret
+                fi
+
+                _mod=${_mod/-/_}
+                if [[ $omit_drivers ]] && [[ "$_mod" =~ $omit_drivers ]]; then
+                    dinfo "Omitting driver ${_mod##$srcmods}"
+                    return 0
+                fi
+
+                # If we are building a host-specific initramfs and this
+                # module is not already loaded, move on to the next one.
+                [[ $hostonly ]] \
+                    && ! module_is_host_only "$_mod" \
+                    && return 0
+
+                if [[ "$_check" = "yes" ]] || ! [[ $DRACUT_KERNEL_LAZY_HASHDIR ]]; then
+                    # We use '-d' option in modprobe only if modules prefix path
+                    # differs from default '/'.  This allows us to use dracut with
+                    # old version of modprobe which doesn't have '-d' option.
+                    local _moddirname=${srcmods%%/lib/modules/*}
+                    [[ -n ${_moddirname} ]] && _moddirname="-d ${_moddirname}/"
+
+                    # ok, load the module, all its dependencies, and any firmware
+                    # it may require
+                    for_each_kmod_dep install_kmod_with_fw $_mod \
+                        --set-version $kernel ${_moddirname} $_mpargs
+                    ((_ret+=$?))
+                else
+                    [[ $DRACUT_KERNEL_LAZY_HASHDIR ]] && \
+                        echo ${_mod%.ko*} >> "$DRACUT_KERNEL_LAZY_HASHDIR/lazylist"
+                fi
+                ;;
+        esac
+        return $_ret
+    }
+
+    function instmods_1() {
+        local _mod _mpargs
+        if (($# == 0)); then  # filenames from stdin
+            while read _mod || [ -n "$_mod" ]; do
+                inst1mod "${_mod%.ko*}" || {
+                    if [[ "$_check" == "yes" ]] && [[ "$_silent" == "no" ]]; then
+                        dfatal "Failed to install module $_mod"
+                    fi
+                }
+            done
+        fi
+        while (($# > 0)); do  # filenames as arguments
+            inst1mod ${1%.ko*} || {
+                if [[ "$_check" == "yes" ]] && [[ "$_silent" == "no" ]]; then
+                    dfatal "Failed to install module $1"
+                fi
+            }
+            shift
+        done
+        return 0
+    }
+
+    local _ret _filter_not_found='FATAL: Module .* not found.'
+    # Capture all stderr from modprobe to _fderr. We could use {var}>...
+    # redirections, but that would make dracut require bash4 at least.
+    eval "( instmods_1 \"\$@\" ) ${_fderr}>&1" \
+        | while read line || [ -n "$line" ]; do [[ "$line" =~ $_filter_not_found ]] || echo $line;done | derror
+    _ret=$?
+    return $_ret
+}