[thirdparty/dracut.git] / dracut.sh

#!/bin/bash -p
#
# Generator script for a dracut initramfs
# Tries to retain some degree of compatibility with the command line
# of the various mkinitrd implementations out there
#

# Copyright 2005-2013 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/>.
#

# store for logging

unset BASH_ENV

# Verify bash version, current minimum is 4
if (( BASH_VERSINFO[0] < 4 )); then
    printf -- 'You need at least Bash 4 to use dracut, sorry.' >&2
    exit 1
fi

dracut_args=( "$@" )
readonly dracut_cmd="$(readlink -f $0)"

set -o pipefail

usage() {
        [[ $sysroot_l ]] && dracutsysrootdir="$sysroot_l"
    [[ $dracutbasedir ]] || dracutbasedir=$dracutsysrootdir/usr/lib/dracut
    if [[ -f $dracutbasedir/dracut-version.sh ]]; then
        . $dracutbasedir/dracut-version.sh
    fi

#                                                       80x25 linebreak here ^
    cat << EOF
Usage: $dracut_cmd [OPTION]... [<initramfs> [<kernel-version>]]

Version: $DRACUT_VERSION

Creates initial ramdisk images for preloading modules

  -h, --help  Display all options

If a [LIST] has multiple arguments, then you have to put these in quotes.

For example:

    # dracut --add-drivers "module1 module2"  ...

EOF
}

long_usage() {
    [[ $dracutbasedir ]] || dracutbasedir=$dracutsysrootdir/usr/lib/dracut
    if [[ -f $dracutbasedir/dracut-version.sh ]]; then
        . $dracutbasedir/dracut-version.sh
    fi

#                                                       80x25 linebreak here ^
    cat << EOF
Usage: $dracut_cmd [OPTION]... [<initramfs> [<kernel-version>]]

Version: $DRACUT_VERSION

Creates initial ramdisk images for preloading modules

  --kver [VERSION]      Set kernel version to [VERSION].
  -f, --force           Overwrite existing initramfs file.
  -a, --add [LIST]      Add a space-separated list of dracut modules.
  --rebuild         Append arguments to those of existing image and rebuild
  -m, --modules [LIST]  Specify a space-separated list of dracut modules to
                         call when building the initramfs. Modules are located
                         in /usr/lib/dracut/modules.d.
  -o, --omit [LIST]     Omit a space-separated list of dracut modules.
  --force-add [LIST]    Force to add a space-separated list of dracut modules
                         to the default set of modules, when -H is specified.
  -d, --drivers [LIST]  Specify a space-separated list of kernel modules to
                         exclusively include in the initramfs.
  --add-drivers [LIST]  Specify a space-separated list of kernel
                         modules to add to the initramfs.
  --force-drivers [LIST] Specify a space-separated list of kernel
                         modules to add to the initramfs and make sure they
                         are tried to be loaded via modprobe same as passing
                         rd.driver.pre=DRIVER kernel parameter.
  --omit-drivers [LIST] Specify a space-separated list of kernel
                         modules not to add to the initramfs.
  --filesystems [LIST]  Specify a space-separated list of kernel filesystem
                         modules to exclusively include in the generic
                         initramfs.
  -k, --kmoddir [DIR]   Specify the directory, where to look for kernel
                         modules
  --fwdir [DIR]         Specify additional directories, where to look for
                         firmwares, separated by :
  --kernel-only         Only install kernel drivers and firmware files
  --no-kernel           Do not install kernel drivers and firmware files
  --print-cmdline       Print the kernel command line for the given disk layout
  --early-microcode     Combine early microcode with ramdisk
  --no-early-microcode  Do not combine early microcode with ramdisk
  --kernel-cmdline [PARAMETERS] Specify default kernel command line parameters
  --strip               Strip binaries in the initramfs
  --nostrip             Do not strip binaries in the initramfs
  --hardlink            Hardlink files in the initramfs
  --nohardlink          Do not hardlink files in the initramfs
  --prefix [DIR]        Prefix initramfs files with [DIR]
  --noprefix            Do not prefix initramfs files
  --mdadmconf           Include local /etc/mdadm.conf
  --nomdadmconf         Do not include local /etc/mdadm.conf
  --lvmconf             Include local /etc/lvm/lvm.conf
  --nolvmconf           Do not include local /etc/lvm/lvm.conf
  --fscks [LIST]        Add a space-separated list of fsck helpers.
  --nofscks             Inhibit installation of any fsck helpers.
  --ro-mnt              Mount / and /usr read-only by default.
  -h, --help            This message
  --debug               Output debug information of the build process
  --profile             Output profile information of the build process
  -L, --stdlog [0-6]    Specify logging level (to standard error)
                         0 - suppress any messages
                         1 - only fatal errors
                         2 - all errors
                         3 - warnings
                         4 - info
                         5 - debug info (here starts lots of output)
                         6 - trace info (and even more)
  -v, --verbose         Increase verbosity level
  -q, --quiet           Decrease verbosity level
  -c, --conf [FILE]     Specify configuration file to use.
                         Default: /etc/dracut.conf
  --confdir [DIR]       Specify configuration directory to use *.conf files
                         from. Default: /etc/dracut.conf.d
  --tmpdir [DIR]        Temporary directory to be used instead of default
                         /var/tmp.
  -r, --sysroot [DIR]   Specify sysroot directory to collect files from.
  -l, --local           Local mode. Use modules from the current working
                         directory instead of the system-wide installed in
                         /usr/lib/dracut/modules.d.
                         Useful when running dracut from a git checkout.
  -H, --hostonly        Host-Only mode: Install only what is needed for
                        booting the local host instead of a generic host.
  -N, --no-hostonly     Disables Host-Only mode
  --hostonly-mode <mode>
                        Specify the hostonly mode to use. <mode> could be
                        one of "sloppy" or "strict". "sloppy" mode is used
                        by default.
                        In "sloppy" hostonly mode, extra drivers and modules
                        will be installed, so minor hardware change won't make
                        the image unbootable (eg. changed keyboard), and the
                        image is still portable among similar hosts.
                        With "strict" mode enabled, anything not necessary
                        for booting the local host in its current state will
                        not be included, and modules may do some extra job
                        to save more space. Minor change of hardware or
                        environment could make the image unbootable.
                        DO NOT use "strict" mode unless you know what you
                        are doing.
  --hostonly-cmdline    Store kernel command line arguments needed
                        in the initramfs
  --no-hostonly-cmdline Do not store kernel command line arguments needed
                        in the initramfs
  --no-hostonly-default-device
                        Do not generate implicit host devices like root,
                        swap, fstab, etc. Use "--mount" or "--add-device"
                        to explicitly add devices as needed.
  --hostonly-i18n       Install only needed keyboard and font files according
                        to the host configuration (default).
  --no-hostonly-i18n    Install all keyboard and font files available.
  --persistent-policy [POLICY]
                        Use [POLICY] to address disks and partitions.
                        POLICY can be any directory name found in /dev/disk.
                        E.g. "by-uuid", "by-label"
  --fstab               Use /etc/fstab to determine the root device.
  --add-fstab [FILE]    Add file to the initramfs fstab
  --mount "[DEV] [MP] [FSTYPE] [FSOPTS]"
                        Mount device [DEV] on mountpoint [MP] with filesystem
                        [FSTYPE] and options [FSOPTS] in the initramfs
  --mount "[MP]"        Same as above, but [DEV], [FSTYPE] and [FSOPTS] are
                        determined by looking at the current mounts.
  --add-device "[DEV]"  Bring up [DEV] in initramfs
  -i, --include [SOURCE] [TARGET]
                        Include the files in the SOURCE directory into the
                         Target directory in the final initramfs.
                        If SOURCE is a file, it will be installed to TARGET
                         in the final initramfs.
  -I, --install [LIST]  Install the space separated list of files into the
                         initramfs.
  --install-optional [LIST]  Install the space separated list of files into the
                         initramfs, if they exist.
  --gzip                Compress the generated initramfs using gzip.
                         This will be done by default, unless another
                         compression option or --no-compress is passed.
  --bzip2               Compress the generated initramfs using bzip2.
                         Make sure your kernel has bzip2 decompression support
                         compiled in, otherwise you will not be able to boot.
  --lzma                Compress the generated initramfs using lzma.
                         Make sure your kernel has lzma support compiled in,
                         otherwise you will not be able to boot.
  --xz                  Compress the generated initramfs using xz.
                         Make sure that your kernel has xz support compiled
                         in, otherwise you will not be able to boot.
  --lzo                 Compress the generated initramfs using lzop.
                         Make sure that your kernel has lzo support compiled
                         in, otherwise you will not be able to boot.
  --lz4                 Compress the generated initramfs using lz4.
                         Make sure that your kernel has lz4 support compiled
                         in, otherwise you will not be able to boot.
  --zstd                Compress the generated initramfs using Zstandard.
                         Make sure that your kernel has zstd support compiled
                         in, otherwise you will not be able to boot.
  --compress [COMPRESSION] Compress the generated initramfs with the
                         passed compression program.  Make sure your kernel
                         knows how to decompress the generated initramfs,
                         otherwise you will not be able to boot.
  --no-compress         Do not compress the generated initramfs.  This will
                         override any other compression options.
  --list-modules        List all available dracut modules.
  -M, --show-modules    Print included module's name to standard output during
                         build.
  --keep                Keep the temporary initramfs for debugging purposes
  --printsize           Print out the module install size
  --sshkey [SSHKEY]     Add ssh key to initramfs (use with ssh-client module)
  --logfile [FILE]      Logfile to use (overrides configuration setting)
  --reproducible        Create reproducible images
  --no-reproducible     Do not create reproducible images
  --loginstall [DIR]    Log all files installed from the host to [DIR]
  --uefi                Create an UEFI executable with the kernel cmdline and
                        kernel combined
  --uefi-stub [FILE]    Use the UEFI stub [FILE] to create an UEFI executable
  --kernel-image [FILE] location of the kernel image

If [LIST] has multiple arguments, then you have to put these in quotes.

For example:

    # dracut --add-drivers "module1 module2"  ...

EOF
}

# Fills up host_devs stack variable and makes sure there are no duplicates
push_host_devs() {
    local _dev
    for _dev in "$@"; do
        [[ " ${host_devs[@]} " == *" $_dev "* ]] && return
        host_devs+=( "$_dev" )
    done
}

# Little helper function for reading args from the commandline.
# it automatically handles -a b and -a=b variants, and returns 1 if
# we need to shift $3.
read_arg() {
    # $1 = arg name
    # $2 = arg value
    # $3 = arg parameter
    local rematch='^[^=]*=(.*)$'
    if [[ $2 =~ $rematch ]]; then
        read "$1" <<< "${BASH_REMATCH[1]}"
    else
        read "$1" <<< "$3"
        # There is no way to shift our callers args, so
        # return 1 to indicate they should do it instead.
        return 1
    fi
}

dropindirs_sort()
{
    local suffix=$1; shift
    local -a files
    local f d

    for d in "$@"; do
        for i in "$d/"*"$suffix"; do
            if [[ -e "$i" ]]; then
                printf "%s\n" "${i##*/}"
            fi
        done
    done | sort -Vu | {
        readarray -t files

        for f in "${files[@]}"; do
            for d in "$@"; do
                if [[ -e "$d/$f" ]]; then
                    printf "%s\n" "$d/$f"
                    continue 2
                fi
            done
        done
    }
}

rearrange_params()
{
    # Workaround -i, --include taking 2 arguments
    newat=()
    for i in "$@"; do
      if [[ $i == "-i" ]] || [[ $i == "--include" ]]; then
            newat+=("++include") # Replace --include by ++include
        else
            newat+=("$i")
        fi
    done
    set -- "${newat[@]}" # Set new $@

    TEMP=$(unset POSIXLY_CORRECT; getopt \
        -o "a:m:o:d:I:k:c:r:L:fvqlHhMN" \
        --long kver: \
        --long add: \
        --long force-add: \
        --long add-drivers: \
        --long force-drivers: \
        --long omit-drivers: \
        --long modules: \
        --long omit: \
        --long drivers: \
        --long filesystems: \
        --long install: \
        --long install-optional: \
        --long fwdir: \
        --long libdirs: \
        --long fscks: \
        --long add-fstab: \
        --long mount: \
        --long device: \
        --long add-device: \
        --long nofscks \
        --long ro-mnt \
        --long kmoddir: \
        --long conf: \
        --long confdir: \
        --long tmpdir: \
        --long sysroot: \
        --long stdlog: \
        --long compress: \
        --long prefix: \
        --long rebuild: \
        --long force \
        --long kernel-only \
        --long no-kernel \
        --long print-cmdline \
        --long kernel-cmdline: \
        --long strip \
        --long nostrip \
        --long hardlink \
        --long nohardlink \
        --long noprefix \
        --long mdadmconf \
        --long nomdadmconf \
        --long lvmconf \
        --long nolvmconf \
        --long debug \
        --long profile \
        --long sshkey: \
        --long logfile: \
        --long verbose \
        --long quiet \
        --long local \
        --long hostonly \
        --long host-only \
        --long no-hostonly \
        --long no-host-only \
        --long hostonly-mode: \
        --long hostonly-cmdline \
        --long no-hostonly-cmdline \
        --long no-hostonly-default-device \
        --long persistent-policy: \
        --long fstab \
        --long help \
        --long bzip2 \
        --long lzma \
        --long xz \
        --long lzo \
        --long lz4 \
        --long zstd \
        --long no-compress \
        --long gzip \
        --long list-modules \
        --long show-modules \
        --long keep \
        --long printsize \
        --long regenerate-all \
        --long noimageifnotneeded \
        --long early-microcode \
        --long no-early-microcode \
        --long reproducible \
        --long no-reproducible \
        --long loginstall: \
        --long uefi \
        --long uefi-stub: \
        --long kernel-image: \
        --long no-hostonly-i18n \
        --long hostonly-i18n \
        --long no-machineid \
        -- "$@")

    if (( $? != 0 )); then
        usage
        exit 1
    fi
}

verbosity_mod_l=0
unset kernel
unset outfile

rearrange_params "$@"
eval set -- "$TEMP"

# parse command line args to check if '--rebuild' option is present
unset append_args_l
unset rebuild_file
while :
do
        if [ "$1" == "--" ]; then
            shift; break
        fi
        if [ "$1" == "--rebuild" ]; then
            append_args_l="yes"
            rebuild_file=$2
            if [ ! -e $rebuild_file ]; then
                echo "Image file '$rebuild_file', for rebuild, does not exist!"
                exit 1
            fi
            abs_rebuild_file=$(readlink -f "$rebuild_file") && rebuild_file="$abs_rebuild_file"
            shift; continue
        fi
        shift
done

# get output file name and kernel version from command line arguments
while (($# > 0)); do
    case ${1%%=*} in
        ++include)
            shift 2;;
        *)
            if ! [[ ${outfile+x} ]]; then
                outfile=$1
            elif ! [[ ${kernel+x} ]]; then
                kernel=$1
            else
                printf "\nUnknown arguments: %s\n\n" "$*" >&2
                usage; exit 1;
            fi
            ;;
    esac
    shift
done

# extract input image file provided with rebuild option to get previous parameters, if any
if [[ $append_args_l == "yes" ]]; then
    unset rebuild_param

    # determine resultant file
    if ! [[ $outfile ]]; then
        outfile=$rebuild_file
    fi

    if ! rebuild_param=$(lsinitrd $rebuild_file '*lib/dracut/build-parameter.txt'); then
        echo "Image '$rebuild_file' has no rebuild information stored"
        exit 1
    fi

    # prepend previous parameters to current command line args
    if [[ $rebuild_param ]]; then
        TEMP="$rebuild_param $TEMP"
        eval set -- "$TEMP"
        rearrange_params "$@"
    fi
fi

unset PARMS_TO_STORE
PARMS_TO_STORE=""

eval set -- "$TEMP"

while :; do
    if [ $1 != "--" ] && [ $1 != "--rebuild" ]; then
        PARMS_TO_STORE+=" $1";
    fi
    case $1 in
        --kver)        kernel="$2";                           PARMS_TO_STORE+=" '$2'"; shift;;
        -a|--add)      add_dracutmodules_l+=("$2");           PARMS_TO_STORE+=" '$2'"; shift;;
        --force-add)   force_add_dracutmodules_l+=("$2");     PARMS_TO_STORE+=" '$2'"; shift;;
        --add-drivers) add_drivers_l+=("$2");                 PARMS_TO_STORE+=" '$2'"; shift;;
        --force-drivers) force_drivers_l+=("$2");             PARMS_TO_STORE+=" '$2'"; shift;;
        --omit-drivers) omit_drivers_l+=("$2");               PARMS_TO_STORE+=" '$2'"; shift;;
        -m|--modules)  dracutmodules_l+=("$2");               PARMS_TO_STORE+=" '$2'"; shift;;
        -o|--omit)     omit_dracutmodules_l+=("$2");          PARMS_TO_STORE+=" '$2'"; shift;;
        -d|--drivers)  drivers_l+=("$2");                     PARMS_TO_STORE+=" '$2'"; shift;;
        --filesystems) filesystems_l+=("$2");                 PARMS_TO_STORE+=" '$2'"; shift;;
        -I|--install)  install_items_l+=("$2");               PARMS_TO_STORE+=" '$2'"; shift;;
        --install-optional) install_optional_items_l+=("$2"); PARMS_TO_STORE+=" '$2'"; shift;;
        --fwdir)       fw_dir_l+=("$2");                      PARMS_TO_STORE+=" '$2'"; shift;;
        --libdirs)     libdirs_l+=("$2");                     PARMS_TO_STORE+=" '$2'"; shift;;
        --fscks)       fscks_l+=("$2");                       PARMS_TO_STORE+=" '$2'"; shift;;
        --add-fstab)   add_fstab_l+=("$2");                   PARMS_TO_STORE+=" '$2'"; shift;;
        --mount)       fstab_lines+=("$2");                   PARMS_TO_STORE+=" '$2'"; shift;;
        --add-device|--device) add_device_l+=("$2");          PARMS_TO_STORE+=" '$2'"; shift;;
        --kernel-cmdline) kernel_cmdline_l+=("$2");           PARMS_TO_STORE+=" '$2'"; shift;;
        --nofscks)     nofscks_l="yes";;
        --ro-mnt)      ro_mnt_l="yes";;
        -k|--kmoddir)  drivers_dir_l="$2";             PARMS_TO_STORE+=" '$2'"; shift;;
        -c|--conf)     conffile="$2";                  PARMS_TO_STORE+=" '$2'"; shift;;
        --confdir)     confdir="$2";                   PARMS_TO_STORE+=" '$2'"; shift;;
        --tmpdir)      tmpdir_l="$2";                  PARMS_TO_STORE+=" '$2'"; shift;;
        -r|--sysroot)  sysroot_l="$2";                 PARMS_TO_STORE+=" '$2'"; shift;;
        -L|--stdlog)   stdloglvl_l="$2";               PARMS_TO_STORE+=" '$2'"; shift;;
        --compress)    compress_l="$2";                PARMS_TO_STORE+=" '$2'"; shift;;
        --prefix)      prefix_l="$2";                  PARMS_TO_STORE+=" '$2'"; shift;;
        --loginstall)  loginstall_l="$2";              PARMS_TO_STORE+=" '$2'"; shift;;
        --rebuild)     if [ $rebuild_file == $outfile ]; then
                           force=yes
                       fi
                       shift
                       ;;
        -f|--force)    force=yes;;
        --kernel-only) kernel_only="yes"; no_kernel="no";;
        --no-kernel)   kernel_only="no"; no_kernel="yes";;
        --print-cmdline)
                       print_cmdline="yes"; hostonly_l="yes"; kernel_only="yes"; no_kernel="yes";;
        --early-microcode)
                       early_microcode_l="yes";;
        --no-early-microcode)
                       early_microcode_l="no";;
        --strip)       do_strip_l="yes";;
        --nostrip)     do_strip_l="no";;
        --hardlink)    do_hardlink_l="yes";;
        --nohardlink)  do_hardlink_l="no";;
        --noprefix)    prefix_l="/";;
        --mdadmconf)   mdadmconf_l="yes";;
        --nomdadmconf) mdadmconf_l="no";;
        --lvmconf)     lvmconf_l="yes";;
        --nolvmconf)   lvmconf_l="no";;
        --debug)       debug="yes";;
        --profile)     profile="yes";;
        --sshkey)      sshkey="$2";                    PARMS_TO_STORE+=" '$2'"; shift;;
        --logfile)     logfile_l="$2"; shift;;
        -v|--verbose)  ((verbosity_mod_l++));;
        -q|--quiet)    ((verbosity_mod_l--));;
        -l|--local)
                       allowlocal="yes"
                       [[ -f "$(readlink -f "${0%/*}")/dracut-init.sh" ]] \
                           && dracutbasedir="$(readlink -f "${0%/*}")"
                       ;;
        -H|--hostonly|--host-only)
                       hostonly_l="yes" ;;
        -N|--no-hostonly|--no-host-only)
                       hostonly_l="no" ;;
        --hostonly-mode)
                       hostonly_mode_l="$2";           PARMS_TO_STORE+=" '$2'"; shift;;
        --hostonly-cmdline)
                       hostonly_cmdline_l="yes" ;;
        --hostonly-i18n)
                       i18n_install_all_l="no" ;;
        --no-hostonly-i18n)
                       i18n_install_all_l="yes" ;;
        --no-hostonly-cmdline)
                       hostonly_cmdline_l="no" ;;
        --no-hostonly-default-device)
                       hostonly_default_device="no" ;;
        --persistent-policy)
                       persistent_policy_l="$2";       PARMS_TO_STORE+=" '$2'"; shift;;
        --fstab)       use_fstab_l="yes" ;;
        -h|--help)     long_usage; exit 1 ;;
        -i|--include)  include_src+=("$2");          PARMS_TO_STORE+=" '$2'";
                       shift;;
        --bzip2)       compress_l="bzip2";;
        --lzma)        compress_l="lzma";;
        --xz)          compress_l="xz";;
        --lzo)         compress_l="lzo";;
        --lz4)         compress_l="lz4";;
        --zstd)        compress_l="zstd";;
        --no-compress) _no_compress_l="cat";;
        --gzip)        compress_l="gzip";;
        --list-modules) do_list="yes";;
        -M|--show-modules)
                       show_modules_l="yes"
                       ;;
        --keep)        keep="yes";;
        --printsize)   printsize="yes";;
        --regenerate-all) regenerate_all="yes";;
        --noimageifnotneeded) noimageifnotneeded="yes";;
        --reproducible) reproducible_l="yes";;
        --no-reproducible) reproducible_l="no";;
        --uefi)        uefi="yes";;
        --uefi-stub)
                       uefi_stub_l="$2";               PARMS_TO_STORE+=" '$2'"; shift;;
        --kernel-image)
                       kernel_image_l="$2";            PARMS_TO_STORE+=" '$2'"; shift;;
        --no-machineid)
                       machine_id_l="no";;
        --) shift; break;;

        *)  # should not even reach this point
            printf "\n!Unknown option: '%s'\n\n" "$1" >&2; usage; exit 1;;
    esac
    shift
done

# getopt cannot handle multiple arguments, so just handle "-I,--include"
# the old fashioned way

while (($# > 0)); do
    if [ "${1%%=*}" == "++include" ]; then
        include_src+=("$2")
        include_target+=("$3")
        PARMS_TO_STORE+=" --include '$2' '$3'"
        shift 2
    fi
    shift
done

[[ $sysroot_l ]] && dracutsysrootdir="$sysroot_l"

if [[ $regenerate_all == "yes" ]]; then
    ret=0
    if [[ $kernel ]]; then
        printf -- "--regenerate-all cannot be called with a kernel version\n" >&2
        exit 1
    fi

    if [[ $outfile ]]; then
        printf -- "--regenerate-all cannot be called with a image file\n" >&2
        exit 1
    fi

    ((len=${#dracut_args[@]}))
    for ((i=0; i < len; i++)); do
        [[ ${dracut_args[$i]} == "--regenerate-all" ]] && \
            unset dracut_args[$i]
    done

    cd $dracutsysrootdir/lib/modules
    for i in *; do
        [[ -f $i/modules.dep ]] || [[ -f $i/modules.dep.bin ]] || continue
        "$dracut_cmd" --kver="$i" "${dracut_args[@]}"
        ((ret+=$?))
    done
    exit $ret
fi

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

export LC_ALL=C
export LANG=C
unset LC_MESSAGES
unset LC_CTYPE
unset LD_LIBRARY_PATH
unset LD_PRELOAD
unset GREP_OPTIONS

export DRACUT_LOG_LEVEL=warning
[[ $debug ]] && {
    export DRACUT_LOG_LEVEL=debug
    export PS4='${BASH_SOURCE}@${LINENO}(${FUNCNAME[0]}): ';
    set -x
}

[[ $profile ]] && {
    export PS4='+ $(date "+%s.%N") ${BASH_SOURCE}@${LINENO}: ';
    set -x
    debug=yes
}

[[ $dracutbasedir ]] || dracutbasedir=$dracutsysrootdir/usr/lib/dracut

# if we were not passed a config file, try the default one
if [[ ! -f $conffile ]]; then
    if [[ $allowlocal ]]; then
        conffile="$dracutbasedir/dracut.conf"
    else
        conffile="$dracutsysrootdir/etc/dracut.conf"
    fi
fi

if [[ ! -d $confdir ]]; then
    if [[ $allowlocal ]]; then
        confdir="$dracutbasedir/dracut.conf.d"
    else
        confdir="$dracutsysrootdir/etc/dracut.conf.d"
    fi
fi

# source our config file
[[ -f $conffile ]] && . "$conffile"

# source our config dir
for f in $(dropindirs_sort ".conf" "$confdir" "$dracutbasedir/dracut.conf.d"); do
    [[ -e $f ]] && . "$f"
done

DRACUT_PATH=${DRACUT_PATH:-/sbin /bin /usr/sbin /usr/bin}

for i in $DRACUT_PATH; do
    rl=$i
    if [ -L "$dracutsysrootdir$i" ]; then
        rl=$(readlink -f $dracutsysrootdir$i)
    fi
    if [[ "$NPATH" != *:$rl* ]] ; then
        NPATH+=":$rl"
    fi
done
export PATH="${NPATH#:}"
unset NPATH

# these options add to the stuff in the config file
(( ${#add_dracutmodules_l[@]} )) && add_dracutmodules+=" ${add_dracutmodules_l[@]} "
(( ${#force_add_dracutmodules_l[@]} )) && force_add_dracutmodules+=" ${force_add_dracutmodules_l[@]} "
(( ${#fscks_l[@]} )) && fscks+=" ${fscks_l[@]} "
(( ${#add_fstab_l[@]} )) && add_fstab+=" ${add_fstab_l[@]} "
(( ${#fstab_lines_l[@]} )) && fstab_lines+=( "${fstab_lines_l[@]}" )
(( ${#install_items_l[@]} )) && install_items+=" ${install_items_l[@]} "
(( ${#install_optional_items_l[@]} )) && install_optional_items+=" ${install_optional_items_l[@]} "

# these options override the stuff in the config file
(( ${#dracutmodules_l[@]} )) && dracutmodules="${dracutmodules_l[@]}"
(( ${#omit_dracutmodules_l[@]} )) && omit_dracutmodules="${omit_dracutmodules_l[@]}"
(( ${#filesystems_l[@]} )) && filesystems="${filesystems_l[@]}"
(( ${#fw_dir_l[@]} )) && fw_dir="${fw_dir_l[@]}"
(( ${#libdirs_l[@]} ))&& libdirs="${libdirs_l[@]}"

[[ $stdloglvl_l ]] && stdloglvl=$stdloglvl_l
[[ ! $stdloglvl ]] && stdloglvl=4
stdloglvl=$((stdloglvl + verbosity_mod_l))
((stdloglvl > 6)) && stdloglvl=6
((stdloglvl < 0)) && stdloglvl=0

[[ $drivers_dir_l ]] && drivers_dir=$drivers_dir_l
[[ $do_strip_l ]] && do_strip=$do_strip_l
[[ $do_strip ]] || do_strip=yes
[[ $do_hardlink_l ]] && do_hardlink=$do_hardlink_l
[[ $do_hardlink ]] || do_hardlink=yes
[[ $prefix_l ]] && prefix=$prefix_l
[[ $prefix = "/" ]] && unset prefix
[[ $hostonly_l ]] && hostonly=$hostonly_l
[[ $hostonly_cmdline_l ]] && hostonly_cmdline=$hostonly_cmdline_l
[[ $hostonly_mode_l ]] && hostonly_mode=$hostonly_mode_l
[[ "$hostonly" == "yes" ]] && ! [[ $hostonly_cmdline ]] && hostonly_cmdline="yes"
[[ $i18n_install_all_l ]] && i18n_install_all=$i18n_install_all_l
[[ $persistent_policy_l ]] && persistent_policy=$persistent_policy_l
[[ $use_fstab_l ]] && use_fstab=$use_fstab_l
[[ $mdadmconf_l ]] && mdadmconf=$mdadmconf_l
[[ $lvmconf_l ]] && lvmconf=$lvmconf_l
[[ $dracutbasedir ]] || dracutbasedir=$dracutsysrootdir/usr/lib/dracut
[[ $fw_dir ]] || fw_dir="$dracutsysrootdir/lib/firmware/updates:$dracutsysrootdir/lib/firmware:$dracutsysrootdir/lib/firmware/$kernel"
[[ $tmpdir_l ]] && tmpdir="$tmpdir_l"
[[ $tmpdir ]] || tmpdir=$dracutsysrootdir/var/tmp
[[ $INITRD_COMPRESS ]] && compress=$INITRD_COMPRESS
[[ $compress_l ]] && compress=$compress_l
[[ $show_modules_l ]] && show_modules=$show_modules_l
[[ $nofscks_l ]] && nofscks="yes"
[[ $ro_mnt_l ]] && ro_mnt="yes"
[[ $early_microcode_l ]] && early_microcode=$early_microcode_l
[[ $early_microcode ]] || early_microcode=yes
[[ $early_microcode_image_dir ]] || early_microcode_image_dir=('/boot')
[[ $early_microcode_image_name ]] || \
    early_microcode_image_name=('intel-uc.img' 'intel-ucode.img' 'amd-uc.img' 'amd-ucode.img' 'early_ucode.cpio' 'microcode.cpio')
[[ $logfile_l ]] && logfile="$logfile_l"
[[ $reproducible_l ]] && reproducible="$reproducible_l"
[[ $loginstall_l ]] && loginstall="$loginstall_l"
[[ $uefi_stub_l ]] && uefi_stub="$uefi_stub_l"
[[ $kernel_image_l ]] && kernel_image="$kernel_image_l"
[[ $machine_id_l ]] && machine_id="$machine_id_l"

if ! [[ $outfile ]]; then
    if [[ $machine_id != "no" ]]; then
        [[ -f $dracutsysrootdir/etc/machine-id ]] && read MACHINE_ID < $dracutsysrootdir/etc/machine-id
    fi

    if [[ $uefi == "yes" ]]; then
        if [[ -n "$uefi_secureboot_key" && -z "$uefi_secureboot_cert" ]] || [[ -z $uefi_secureboot_key && -n $uefi_secureboot_cert ]]; then
            dfatal "Need 'uefi_secureboot_key' and 'uefi_secureboot_cert' both to be set."
            exit 1
        fi

        if [[ -n "$uefi_secureboot_key" && -n "$uefi_secureboot_cert" ]] && !command -v sbsign &>/dev/null; then
            dfatal "Need 'sbsign' to create a signed UEFI executable"
            exit 1
        fi

        BUILD_ID=$(cat $dracutsysrootdir/etc/os-release $dracutsysrootdir/usr/lib/os-release \
                       | while read -r line || [[ $line ]]; do \
                       [[ $line =~ BUILD_ID\=* ]] && eval "$line" && echo "$BUILD_ID" && break; \
                   done)
        if [[ -z $dracutsysrootdir ]]; then
            if [[ -d /efi ]] && mountpoint -q /efi; then
                efidir=/efi/EFI
            else
                efidir=/boot/EFI
                if [[ -d $dracutsysrootdir/boot/efi/EFI ]]; then
                    efidir=/boot/efi/EFI
                fi
            fi
        else
            efidir=/boot/EFI
            if [[ -d $dracutsysrootdir/boot/efi/EFI ]]; then
                efidir=/boot/efi/EFI
            fi
        fi
        mkdir -p "$dracutsysrootdir$efidir/Linux"
        outfile="$dracutsysrootdir$efidir/Linux/linux-$kernel${MACHINE_ID:+-${MACHINE_ID}}${BUILD_ID:+-${BUILD_ID}}.efi"
    else
        if [[ -e "$dracutsysrootdir/boot/vmlinuz-$kernel" ]]; then
            outfile="/boot/initramfs-$kernel.img"
        elif [[ $MACHINE_ID ]] && ( [[ -d $dracutsysrootdir/boot/${MACHINE_ID} ]] || [[ -L $dracutsysrootdir/boot/${MACHINE_ID} ]] ); then
            outfile="$dracutsysrootdir/boot/${MACHINE_ID}/$kernel/initrd"
        else
            outfile="$dracutsysrootdir/boot/initramfs-$kernel.img"
        fi
    fi
fi

# eliminate IFS hackery when messing with fw_dir
export DRACUT_FIRMWARE_PATH=${fw_dir// /:}
fw_dir=${fw_dir//:/ }

# check for logfile and try to create one if it doesn't exist
if [[ -n "$logfile" ]];then
    if [[ ! -f "$logfile" ]];then
        touch "$logfile"
        if [ ! $? -eq 0 ] ;then
            printf "%s\n" "dracut: touch $logfile failed." >&2
        fi
    fi
fi

# handle compression options.
DRACUT_COMPRESS_BZIP2=${DRACUT_COMPRESS_BZIP2:-bzip2}
DRACUT_COMPRESS_LBZIP2=${DRACUT_COMPRESS_LBZIP2:-lbzip2}
DRACUT_COMPRESS_LZMA=${DRACUT_COMPRESS_LZMA:-lzma}
DRACUT_COMPRESS_XZ=${DRACUT_COMPRESS_XZ:-xz}
DRACUT_COMPRESS_GZIP=${DRACUT_COMPRESS_GZIP:-gzip}
DRACUT_COMPRESS_PIGZ=${DRACUT_COMPRESS_PIGZ:-pigz}
DRACUT_COMPRESS_LZOP=${DRACUT_COMPRESS_LZOP:-lzop}
DRACUT_COMPRESS_ZSTD=${DRACUT_COMPRESS_ZSTD:-zstd}
DRACUT_COMPRESS_LZ4=${DRACUT_COMPRESS_LZ4:-lz4}
DRACUT_COMPRESS_CAT=${DRACUT_COMPRESS_CAT:-cat}

if [[ $_no_compress_l = "$DRACUT_COMPRESS_CAT" ]]; then
    compress="$DRACUT_COMPRESS_CAT"
fi

if ! [[ $compress ]]; then
    # check all known compressors, if none specified
    for i in $DRACUT_COMPRESS_PIGZ $DRACUT_COMPRESS_GZIP $DRACUT_COMPRESS_LZ4 $DRACUT_COMPRESS_LZOP $ $DRACUT_COMPRESS_ZSTD $DRACUT_COMPRESS_LZMA $DRACUT_COMPRESS_XZ $DRACUT_COMPRESS_LBZIP2 $OMPRESS_BZIP2 $DRACUT_COMPRESS_CAT; do
        command -v "$i" &>/dev/null || continue
        compress="$i"
        break
    done
    if [[ $compress = cat ]]; then
            printf "%s\n" "dracut: no compression tool available. Initramfs image is going to be big." >&2
    fi
fi

# choose the right arguments for the compressor
case $compress in
    bzip2|lbzip2)
        if [[ "$compress" =  lbzip2 ]] || command -v $DRACUT_COMPRESS_LBZIP2 &>/dev/null; then
            compress="$DRACUT_COMPRESS_LBZIP2 -9"
        else
            compress="$DRACUT_COMPRESS_BZIP2 -9"
        fi
        ;;
    lzma)
        compress="$DRACUT_COMPRESS_LZMA -9 -T0"
        ;;
    xz)
        compress="$DRACUT_COMPRESS_XZ --check=crc32 --lzma2=dict=1MiB -T0"
        ;;
    gzip|pigz)
        if [[ "$compress" = pigz ]] || command -v $DRACUT_COMPRESS_PIGZ &>/dev/null; then
            compress="$DRACUT_COMPRESS_PIGZ -9 -n -T -R"
        elif command -v gzip &>/dev/null && $DRACUT_COMPRESS_GZIP --help 2>&1 | grep -q rsyncable; then
            compress="$DRACUT_COMPRESS_GZIP -n -9 --rsyncable"
        else
            compress="$DRACUT_COMPRESS_GZIP -n -9"
        fi
        ;;
    lzo|lzop)
        compress="$DRACUT_COMPRESS_LZOP -9"
        ;;
    lz4)
        compress="$DRACUT_COMPRESS_LZ4 -l -9"
        ;;
    zstd)
       compress="$DRACUT_COMPRESS_ZSTD -15 -q -T0"
       ;;
esac

[[ $hostonly = yes ]] && hostonly="-h"
[[ $hostonly != "-h" ]] && unset hostonly

case $hostonly_mode in
    '')
        [[ $hostonly ]] && hostonly_mode="sloppy" ;;
    sloppy|strict)
        if [[ ! $hostonly ]]; then
            unset hostonly_mode
        fi
        ;;
    *)
        printf "%s\n" "dracut: Invalid hostonly mode '$hostonly_mode'." >&2
        exit 1
esac

[[ $reproducible == yes ]] && DRACUT_REPRODUCIBLE=1

case "${drivers_dir}" in
    ''|*lib/modules/${kernel}|*lib/modules/${kernel}/) ;;
    *)
        [[ "$DRACUT_KMODDIR_OVERRIDE" ]] || {
            printf "%s\n" "dracut: -k/--kmoddir path must contain \"lib/modules\" as a parent of your kernel module directory,"
            printf "%s\n" "dracut: or modules may not be placed in the correct location inside the initramfs."
            printf "%s\n" "dracut: was given: ${drivers_dir}"
            printf "%s\n" "dracut: expected: $(dirname ${drivers_dir})/lib/modules/${kernel}"
            printf "%s\n" "dracut: Please move your modules into the correct directory structure and pass the new location,"
            printf "%s\n" "dracut: or set DRACUT_KMODDIR_OVERRIDE=1 to ignore this check."
            exit 1
        }
        ;;
esac

readonly TMPDIR="$(realpath -e "$tmpdir")"
[ -d "$TMPDIR" ] || {
    printf "%s\n" "dracut: Invalid tmpdir '$tmpdir'." >&2
    exit 1
}
readonly DRACUT_TMPDIR="$(mktemp -p "$TMPDIR/" -d -t dracut.XXXXXX)"
[ -d "$DRACUT_TMPDIR" ] || {
    printf "%s\n" "dracut: mktemp -p '$TMPDIR/' -d -t dracut.XXXXXX failed." >&2
    exit 1
}

# clean up after ourselves no matter how we die.
trap '
    ret=$?;
    [[ $keep ]] && echo "Not removing $DRACUT_TMPDIR." >&2 || { [[ $DRACUT_TMPDIR ]] && rm -rf -- "$DRACUT_TMPDIR"; };
    exit $ret;
    ' EXIT

# clean up after ourselves no matter how we die.
trap 'exit 1;' SIGINT

readonly initdir="${DRACUT_TMPDIR}/initramfs"
mkdir "$initdir"

if [[ $early_microcode = yes ]] || ( [[ $acpi_override = yes ]] && [[ -d $acpi_table_dir ]] ); then
    readonly early_cpio_dir="${DRACUT_TMPDIR}/earlycpio"
    mkdir "$early_cpio_dir"
fi

[[ -n "$dracutsysrootdir" ]] || export DRACUT_RESOLVE_LAZY="1"

if [[ $print_cmdline ]]; then
    stdloglvl=0
    sysloglvl=0
    fileloglvl=0
    kmsgloglvl=0
fi

if [[ -f $dracutbasedir/dracut-version.sh ]]; then
    . $dracutbasedir/dracut-version.sh
fi

if [[ -f $dracutbasedir/dracut-init.sh ]]; then
    . $dracutbasedir/dracut-init.sh
else
    printf "%s\n" "dracut: Cannot find $dracutbasedir/dracut-init.sh." >&2
    printf "%s\n" "dracut: Are you running from a git checkout?" >&2
    printf "%s\n" "dracut: Try passing -l as an argument to $dracut_cmd" >&2
    exit 1
fi

if [[ $no_kernel != yes ]] && ! [[ -d $srcmods ]]; then
    printf "%s\n" "dracut: Cannot find module directory $srcmods" >&2
    printf "%s\n" "dracut: and --no-kernel was not specified" >&2
    exit 1
fi

if ! [[ $print_cmdline ]]; then
    inst $DRACUT_TESTBIN
    if ! $DRACUT_INSTALL ${initdir:+-D "$initdir"} ${dracutsysrootdir:+-r "$dracutsysrootdir"} -R "$DRACUT_TESTBIN" &>/dev/null; then
        unset DRACUT_RESOLVE_LAZY
        export DRACUT_RESOLVE_DEPS=1
    fi
    rm -fr -- ${initdir}/*
fi

dracutfunctions=$dracutbasedir/dracut-functions.sh
export dracutfunctions

(( ${#drivers_l[@]} )) && drivers="${drivers_l[@]}"
drivers=${drivers/-/_}

(( ${#add_drivers_l[@]} )) && add_drivers+=" ${add_drivers_l[@]} "
add_drivers=${add_drivers/-/_}

(( ${#force_drivers_l[@]} )) && force_drivers+=" ${force_drivers_l[@]} "
force_drivers=${force_drivers/-/_}

(( ${#omit_drivers_l[@]} )) && omit_drivers+=" ${omit_drivers_l[@]} "
omit_drivers=${omit_drivers/-/_}

(( ${#kernel_cmdline_l[@]} )) && kernel_cmdline+=" ${kernel_cmdline_l[@]} "

omit_drivers_corrected=""
for d in $omit_drivers; do
    [[ " $drivers $add_drivers " == *\ $d\ * ]] && continue
    [[ " $drivers $force_drivers " == *\ $d\ * ]] && continue
    omit_drivers_corrected+="$d|"
done
omit_drivers="${omit_drivers_corrected%|}"
unset omit_drivers_corrected

# prepare args for logging
for ((i=0; i < ${#dracut_args[@]}; i++)); do
    [[ "${dracut_args[$i]}" == *\ * ]] && \
        dracut_args[$i]="\"${dracut_args[$i]}\""
        #" keep vim happy
done

dinfo "Executing: $dracut_cmd ${dracut_args[@]}"

[[ $do_list = yes ]] && {
    for mod in $dracutbasedir/modules.d/*; do
        [[ -d $mod ]] || continue;
        [[ -e $mod/install || -e $mod/installkernel || \
            -e $mod/module-setup.sh ]] || continue
        printf "%s\n" "${mod##*/??}"
    done
    exit 0
}

# This is kinda legacy -- eventually it should go away.
case $dracutmodules in
    ""|auto) dracutmodules="all" ;;
esac

abs_outfile=$(readlink -f "$outfile") && outfile="$abs_outfile"


[[ -d $dracutsysrootdir$systemdutildir ]] \
    || systemdutildir=$(pkg-config systemd --variable=systemdutildir 2>/dev/null)

if ! [[ -d "$dracutsysrootdir$systemdutildir" ]]; then
    [[ -e $dracutsysrootdir/lib/systemd/systemd-udevd ]] && systemdutildir=/lib/systemd
    [[ -e $dracutsysrootdir/usr/lib/systemd/systemd-udevd ]] && systemdutildir=/usr/lib/systemd
fi


if [[ $no_kernel != yes ]] && [[ -d $srcmods ]]; then
    if ! [[ -f $srcmods/modules.dep ]]; then
        if [[ -n "$(find "$srcmods" -name '*.ko*')" ]]; then
            dfatal "$srcmods/modules.dep is missing. Did you run depmod?"
            exit 1
        else
            dwarn "$srcmods/modules.dep is missing. Did you run depmod?"
        fi
    elif ! ( command -v gzip &>/dev/null && command -v xz &>/dev/null); then
        read _mod < $srcmods/modules.dep
        _mod=${_mod%%:*}
        if [[ -f $srcmods/"$_mod" ]]; then
            # Check, if kernel modules are compressed, and if we can uncompress them
            case "$_mod" in
                *.ko.gz) kcompress=gzip;;
                *.ko.xz) kcompress=xz;;
            esac
            if [[ $kcompress ]]; then
                if ! command -v "$kcompress" &>/dev/null; then
                    dfatal "Kernel modules are compressed with $kcompress, but $kcompress is not available."
                    exit 1
                fi
            fi
        fi
    fi
fi

if [[ ! $print_cmdline ]]; then
    if [[ -f $outfile && ! $force ]]; then
        dfatal "Will not override existing initramfs ($outfile) without --force"
        exit 1
    fi

    outdir=${outfile%/*}
    [[ $outdir ]] || outdir="/"

    if [[ ! -d "$outdir" ]]; then
        dfatal "Can't write to $outdir: Directory $outdir does not exist or is not accessible."
        exit 1
    elif [[ ! -w "$outdir" ]]; then
        dfatal "No permission to write to $outdir."
        exit 1
    elif [[ -f "$outfile" && ! -w "$outfile" ]]; then
        dfatal "No permission to write $outfile."
        exit 1
    fi

    if [[ $loginstall ]]; then
        if ! mkdir -p "$loginstall"; then
            dfatal "Could not create directory to log installed files to '$loginstall'."
            exit 1
        fi
        loginstall=$(readlink -f "$loginstall")
    fi

    if [[ $uefi = yes ]]; then
        if ! command -v objcopy &>/dev/null; then
            dfatal "Need 'objcopy' to create a UEFI executable"
            exit 1
        fi
        unset EFI_MACHINE_TYPE_NAME
        case $(uname -m) in
            x86_64)
                EFI_MACHINE_TYPE_NAME=x64;;
            ia32)
                EFI_MACHINE_TYPE_NAME=ia32;;
            *)
                dfatal "Architecture '$(uname -m)' not supported to create a UEFI executable"
                exit 1
                ;;
        esac

        if ! [[ -s $uefi_stub ]]; then
            for uefi_stub in \
                $dracutsysrootdir"${systemdutildir}/boot/efi/linux${EFI_MACHINE_TYPE_NAME}.efi.stub" \
                    "$dracutsysrootdir/usr/lib/gummiboot/linux${EFI_MACHINE_TYPE_NAME}.efi.stub"; do
                [[ -s $uefi_stub ]] || continue
                break
            done
        fi
        if ! [[ -s $uefi_stub ]]; then
            dfatal "Can't find a uefi stub '$uefi_stub' to create a UEFI executable"
            exit 1
        fi

        if ! [[ $kernel_image ]]; then
            for kernel_image in "$dracutsysrootdir/lib/modules/$kernel/vmlinuz" "$dracutsysrootdir/boot/vmlinuz-$kernel"; do
                [[ -s "$kernel_image" ]] || continue
                break
            done
        fi
        if ! [[ -s $kernel_image ]]; then
            dfatal "Can't find a kernel image '$kernel_image' to create a UEFI executable"
            exit 1
        fi
    fi
fi

if [[ $acpi_override = yes ]] && ! ( check_kernel_config CONFIG_ACPI_TABLE_UPGRADE ||  check_kernel_config CONFIG_ACPI_INITRD_TABLE_OVERRIDE ); then
    dwarn "Disabling ACPI override, because kernel does not support it. CONFIG_ACPI_INITRD_TABLE_OVERRIDE!=y or CONFIG_ACPI_TABLE_UPGRADE!=y"
    unset acpi_override
fi

if [[ $early_microcode = yes ]]; then
    if [[ $hostonly ]]; then
        [[ $(get_cpu_vendor) == "AMD" ]] \
            && ! check_kernel_config CONFIG_MICROCODE_AMD \
            && unset early_microcode
        [[ $(get_cpu_vendor) == "Intel" ]] \
            && ! check_kernel_config CONFIG_MICROCODE_INTEL \
            && unset early_microcode
    else
        ! check_kernel_config CONFIG_MICROCODE_AMD \
            && ! check_kernel_config CONFIG_MICROCODE_INTEL \
            && unset early_microcode
    fi
    [[ $early_microcode != yes ]] \
        && dwarn "Disabling early microcode, because kernel does not support it. CONFIG_MICROCODE_[AMD|INTEL]!=y"
fi

# Need to be able to have non-root users read stuff (rpcbind etc)
chmod 755 "$initdir"

if [[ $hostonly ]]; then
    for i in /sys /proc /run /dev; do
        if ! findmnt --target "$i" &>/dev/null; then
            dwarning "Turning off host-only mode: '$i' is not mounted!"
            unset hostonly
        fi
    done
fi

declare -A host_fs_types

for line in "${fstab_lines[@]}"; do
    set -- $line
    dev="$1"
    #dev mp fs fsopts
    case "$dev" in
        UUID=*)
            dev=$(blkid -l -t UUID=${dev#UUID=} -o device)
            ;;
        LABEL=*)
            dev=$(blkid -l -t LABEL=${dev#LABEL=} -o device)
            ;;
        PARTUUID=*)
            dev=$(blkid -l -t PARTUUID=${dev#PARTUUID=} -o device)
            ;;
        PARTLABEL=*)
            dev=$(blkid -l -t PARTLABEL=${dev#PARTLABEL=} -o device)
            ;;
    esac
    [ -z "$dev" ] && dwarn "Bad fstab entry $@" && continue
    if [[ "$3" == btrfs ]]; then
        for i in $(btrfs_devs "$2"); do
            push_host_devs "$i"
        done
    fi
    push_host_devs "$dev"
    host_fs_types["$dev"]="$3"
done

for f in $add_fstab; do
    [[ -e $f ]] || continue
    while read dev rest || [ -n "$dev" ]; do
        push_host_devs "$dev"
    done < "$f"
done

for dev in $add_device; do
    push_host_devs "$dev"
done

if (( ${#add_device_l[@]} )); then
    add_device+=" ${add_device_l[@]} "
    push_host_devs "${add_device_l[@]}"
fi

if [[ $hostonly ]] && [[ "$hostonly_default_device" != "no" ]]; then
    # in hostonly mode, determine all devices, which have to be accessed
    # and examine them for filesystem types

    for mp in \
        "/" \
        "/etc" \
        "/bin" \
        "/sbin" \
        "/lib" \
        "/lib64" \
        "/usr" \
        "/usr/bin" \
        "/usr/sbin" \
        "/usr/lib" \
        "/usr/lib64" \
        "/boot" \
        "/boot/efi" \
        "/boot/zipl" \
        ;
    do
        mp=$(readlink -f "$dracutsysrootdir$mp")
        mountpoint "$mp" >/dev/null 2>&1 || continue
        _dev=$(find_block_device "$mp")
        _bdev=$(readlink -f "/dev/block/$_dev")
        [[ -b $_bdev ]] && _dev=$_bdev
        [[ "$mp" == "/" ]] && root_devs+=("$_dev")
        push_host_devs "$_dev"
        if [[ $(find_mp_fstype "$mp") == btrfs ]]; then
            for i in $(btrfs_devs "$mp"); do
                [[ "$mp" == "/" ]] && root_devs+=("$i")
                push_host_devs "$i"
            done
        fi
    done

    # TODO - with sysroot, /proc/swaps is not relevant
    if [[ -f /proc/swaps ]] && [[ -f $dracutsysrootdir/etc/fstab ]]; then
        while read dev type rest || [ -n "$dev" ]; do
            [[ -b $dev ]] || continue
            [[ "$type" == "partition" ]] || continue

            while read _d _m _t _o _r || [ -n "$_d" ]; do
                [[ "$_d" == \#* ]] && continue
                [[ $_d ]] || continue
                [[ $_t != "swap" ]] && continue
                [[ $_m != "swap" ]] && [[ $_m != "none" ]] && continue
                [[ "$_o" == *noauto* ]] && continue
                _d=$(expand_persistent_dev "$_d")
                [[ "$_d" -ef "$dev" ]] || continue

                if [[ -f $dracutsysrootdir/etc/crypttab ]]; then
                    while read _mapper _a _p _o || [ -n "$_mapper" ]; do
                        [[ $_mapper = \#* ]] && continue
                        [[ "$_d" -ef /dev/mapper/"$_mapper" ]] || continue
                        [[ "$_o" ]] || _o="$_p"
                        # skip entries with password files
                        [[ "$_p" == /* ]] && [[ -f $_p ]] && continue 2
                        # skip mkswap swap
                        [[ $_o == *swap* ]] && continue 2
                    done < $dracutsysrootdir/etc/crypttab
                fi

                _dev="$(readlink -f "$dev")"
                push_host_devs "$_dev"
                swap_devs+=("$_dev")
                break
            done < $dracutsysrootdir/etc/fstab
        done < /proc/swaps
    fi

    # collect all "x-initrd.mount" entries from /etc/fstab
    if [[ -f $dracutsysrootdir/etc/fstab ]]; then
        while read _d _m _t _o _r || [ -n "$_d" ]; do
            [[ "$_d" == \#* ]] && continue
            [[ $_d ]] || continue
            [[ "$_o" != *x-initrd.mount* ]] && continue
            _dev=$(expand_persistent_dev "$_d")
            _dev="$(readlink -f "$_dev")"
            [[ -b $_dev ]] || continue

            push_host_devs "$_dev"
            if [[ "$_t" == btrfs ]]; then
                for i in $(btrfs_devs "$_m"); do
                    push_host_devs "$i"
                done
            fi
        done < $dracutsysrootdir/etc/fstab
    fi
fi

unset m
unset rest

_get_fs_type() {
    [[ $1 ]] || return
    if [[ -b /dev/block/$1 ]]; then
        ID_FS_TYPE=$(get_fs_env "/dev/block/$1") && host_fs_types["$(readlink -f "/dev/block/$1")"]="$ID_FS_TYPE"
        return 1
    fi
    if [[ -b $1 ]]; then
        ID_FS_TYPE=$(get_fs_env "$1") && host_fs_types["$(readlink -f "$1")"]="$ID_FS_TYPE"
        return 1
    fi
    if fstype=$(find_dev_fstype "$1"); then
        host_fs_types["$1"]="$fstype"
        return 1
    fi
    return 1
}

for dev in "${host_devs[@]}"; do
    _get_fs_type "$dev"
    check_block_and_slaves_all _get_fs_type "$(get_maj_min "$dev")"
done

for dev in "${!host_fs_types[@]}"; do
    [[ ${host_fs_types[$dev]} = "reiserfs" ]] || [[ ${host_fs_types[$dev]} = "xfs" ]] || continue
    rootopts=$(find_dev_fsopts "$dev")
    if [[ ${host_fs_types[$dev]} = "reiserfs" ]]; then
        journaldev=$(fs_get_option $rootopts "jdev")
    elif [[ ${host_fs_types[$dev]} = "xfs" ]]; then
        journaldev=$(fs_get_option $rootopts "logdev")
    fi
    if [[ $journaldev ]]; then
        dev="$(readlink -f "$dev")"
        push_host_devs "$dev"
        _get_fs_type "$dev"
        check_block_and_slaves_all _get_fs_type "$(get_maj_min "$dev")"
    fi
done

[[ -d $dracutsysrootdir$udevdir ]] \
    || udevdir="$(pkg-config udev --variable=udevdir 2>/dev/null)"
if ! [[ -d "$dracutsysrootdir$udevdir" ]]; then
    [[ -e $dracutsysrootdir/lib/udev/ata_id ]] && udevdir=/lib/udev
    [[ -e $dracutsysrootdir/usr/lib/udev/ata_id ]] && udevdir=/usr/lib/udev
fi

[[ -d $dracutsysrootdir$systemdsystemunitdir ]] \
    || systemdsystemunitdir=$(pkg-config systemd --variable=systemdsystemunitdir 2>/dev/null)

[[ -d "$dracutsysrootdir$systemdsystemunitdir" ]] || systemdsystemunitdir=${systemdutildir}/system

[[ -d $dracutsysrootdir$systemdsystemconfdir ]] \
    || systemdsystemconfdir=$(pkg-config systemd --variable=systemdsystemconfdir 2>/dev/null)

[[ -d "$dracutsysrootdir$systemdsystemconfdir" ]] || systemdsystemconfdir=/etc/systemd/system

[[ -d $dracutsysrootdir$tmpfilesdir ]] \
    || tmpfilesdir=$(pkg-config systemd --variable=tmpfilesdir 2>/dev/null)

if ! [[ -d "$dracutsysrootdir$tmpfilesdir" ]]; then
    [[ -d $dracutsysrootdir/lib/tmpfiles.d ]] && tmpfilesdir=/lib/tmpfiles.d
    [[ -d $dracutsysrootdir/usr/lib/tmpfiles.d ]] && tmpfilesdir=/usr/lib/tmpfiles.d
fi

export initdir dracutbasedir \
    dracutmodules force_add_dracutmodules add_dracutmodules omit_dracutmodules \
    mods_to_load \
    fw_dir drivers_dir debug no_kernel kernel_only \
    omit_drivers mdadmconf lvmconf root_devs \
    use_fstab fstab_lines libdirs fscks nofscks ro_mnt \
    stdloglvl sysloglvl fileloglvl kmsgloglvl logfile \
    debug host_fs_types host_devs swap_devs sshkey add_fstab \
    DRACUT_VERSION udevdir prefix filesystems drivers \
    systemdutildir systemdsystemunitdir systemdsystemconfdir \
    hostonly_cmdline loginstall \
    tmpfilesdir

mods_to_load=""
# check all our modules to see if they should be sourced.
# This builds a list of modules that we will install next.
for_each_module_dir check_module
for_each_module_dir check_mount

dracut_module_included "fips" && export DRACUT_FIPS_MODE=1

do_print_cmdline()
{
    local -A _mods_to_print
    for i in $modules_loaded $mods_to_load; do
        _mods_to_print[$i]=1
    done

    # source our modules.
    for moddir in "$dracutbasedir/modules.d"/[0-9][0-9]*; do
        _d_mod=${moddir##*/}; _d_mod=${_d_mod#[0-9][0-9]}
        [[ ${_mods_to_print[$_d_mod]} ]] || continue
        module_cmdline "$_d_mod" "$moddir"
    done
    unset moddir
}

if [[ $print_cmdline ]]; then
    do_print_cmdline
    printf "\n"
    exit 0
fi

# Create some directory structure first
[[ $prefix ]] && mkdir -m 0755 -p "${initdir}${prefix}"

[[ -h $dracutsysrootdir/lib ]] || mkdir -m 0755 -p "${initdir}${prefix}/lib"
[[ $prefix ]] && ln -sfn "${prefix#/}/lib" "$initdir/lib"

if [[ $prefix ]]; then
    for d in bin etc lib sbin tmp usr var $libdirs; do
        [[ "$d" == */* ]] && continue
        ln -sfn "${prefix#/}/${d#/}" "$initdir/$d"
    done
fi

if [[ $kernel_only != yes ]]; then
    for d in usr/bin usr/sbin bin etc lib sbin tmp usr var var/tmp $libdirs; do
        [[ -e "${initdir}${prefix}/$d" ]] && continue
        if [ -L "/$d" ]; then
            inst_symlink "/$d" "${prefix}/$d"
        else
            mkdir -m 0755 -p "${initdir}${prefix}/$d"
        fi
    done

    for d in dev proc sys sysroot root run; do
        if [ -L "/$d" ]; then
            inst_symlink "/$d"
        else
            mkdir -m 0755 -p "$initdir/$d"
        fi
    done

    ln -sfn ../run "$initdir/var/run"
    ln -sfn ../run/lock "$initdir/var/lock"
else
    for d in lib "$libdir"; do
        [[ -e "${initdir}${prefix}/$d" ]] && continue
        if [ -h "/$d" ]; then
            inst "/$d" "${prefix}/$d"
        else
            mkdir -m 0755 -p "${initdir}${prefix}/$d"
        fi
    done
fi

if [[ $kernel_only != yes ]]; then
    mkdir -p "${initdir}/etc/cmdline.d"
    for _d in $hookdirs; do
        mkdir -m 0755 -p ${initdir}/lib/dracut/hooks/$_d
    done
    if [[ "$EUID" = "0" ]]; then
        [ -c ${initdir}/dev/null ] || mknod ${initdir}/dev/null c 1 3
        [ -c ${initdir}/dev/kmsg ] || mknod ${initdir}/dev/kmsg c 1 11
        [ -c ${initdir}/dev/console ] || mknod ${initdir}/dev/console c 5 1
        [ -c ${initdir}/dev/random ] || mknod ${initdir}/dev/random c 1 8
        [ -c ${initdir}/dev/urandom ] || mknod ${initdir}/dev/urandom c 1 9
    fi
fi

_isize=0 #initramfs size
modules_loaded=" "
# source our modules.
for moddir in "$dracutbasedir/modules.d"/[0-9][0-9]*; do
    _d_mod=${moddir##*/}; _d_mod=${_d_mod#[0-9][0-9]}
    [[ "$mods_to_load" == *\ $_d_mod\ * ]] || continue
    if [[ $show_modules = yes ]]; then
        printf "%s\n" "$_d_mod"
    else
        dinfo "*** Including module: $_d_mod ***"
    fi
    if [[ $kernel_only == yes ]]; then
        module_installkernel "$_d_mod" "$moddir" || {
            dfatal "installkernel failed in module $_d_mod"
            exit 1
        }
    else
        module_install "$_d_mod" "$moddir"
        if [[ $no_kernel != yes ]]; then
            module_installkernel "$_d_mod" "$moddir" || {
                dfatal "installkernel failed in module $_d_mod"
                exit 1
            }
        fi
    fi
    mods_to_load=${mods_to_load// $_d_mod /}
    modules_loaded+="$_d_mod "

    #print the module install size
    if [ -n "$printsize" ]; then
        _isize_new=$(du -sk ${initdir}|cut -f1)
        _isize_delta=$((_isize_new - _isize))
        printf "%s\n" "$_d_mod install size: ${_isize_delta}k"
        _isize=$_isize_new
    fi
done
unset moddir

for i in $modules_loaded; do
    mkdir -p $initdir/lib/dracut
    printf "%s\n" "$i" >> $initdir/lib/dracut/modules.txt
done

dinfo "*** Including modules done ***"

## final stuff that has to happen
if [[ $no_kernel != yes ]]; then
    if [[ $hostonly_mode = "strict" ]]; then
        cp "$DRACUT_KERNEL_MODALIASES" $initdir/lib/dracut/hostonly-kernel-modules.txt
    fi

    if [[ $drivers ]]; then
        hostonly='' instmods $drivers
    fi

    if [[ -n "${add_drivers// }" ]]; then
        hostonly='' instmods -c $add_drivers
    fi
    if [[ $force_drivers ]]; then
        hostonly='' instmods -c $force_drivers
        rm -f $initdir/etc/cmdline.d/20-force_driver.conf
        for mod in $force_drivers; do
            echo "rd.driver.pre=$mod" >>$initdir/etc/cmdline.d/20-force_drivers.conf
        done
    fi
    if [[ $filesystems ]]; then
        hostonly='' instmods -c $filesystems
    fi

    dinfo "*** Installing kernel module dependencies ***"
    dracut_kernel_post
    dinfo "*** Installing kernel module dependencies done ***"

    if [[ $noimageifnotneeded == yes ]] && [[ $hostonly ]]; then
        if [[ ! -f "$initdir/lib/dracut/need-initqueue" ]] && \
            [[ -f ${initdir}/lib/modules/$kernel/modules.dep && ! -s ${initdir}/lib/modules/$kernel/modules.dep ]]; then
            for i in ${initdir}/etc/cmdline.d/*.conf; do
                # We need no initramfs image and do not generate one.
                [[ $i == "${initdir}/etc/cmdline.d/*.conf" ]] && exit 0
            done
        fi
    fi
fi

if [[ $kernel_only != yes ]]; then
    (( ${#install_items[@]} > 0 )) && inst_multiple ${install_items[@]}
    (( ${#install_optional_items[@]} > 0 )) && inst_multiple -o ${install_optional_items[@]}

    [[ $kernel_cmdline ]] && printf "%s\n" "$kernel_cmdline" >> "${initdir}/etc/cmdline.d/01-default.conf"

    for line in "${fstab_lines[@]}"; do
        line=($line)

        if [ -z "${line[1]}" ]; then
            # Determine device and mount options from current system
            mountpoint -q "${line[0]}" || derror "${line[0]} is not a mount point!"
            line=($(findmnt --raw -n --target "${line[0]}" --output=source,target,fstype,options))
            dinfo "Line for ${line[1]}: ${line[@]}"
        else
            # Use default options
            [ -z "${line[3]}" ] && line[3]="defaults"
        fi

        # Default options for freq and passno
        [ -z "${line[4]}" ] && line[4]="0"
        [ -z "${line[5]}" ] && line[5]="2"

        strstr "${line[2]}" "nfs" && line[5]="0"
        echo "${line[@]}" >> "${initdir}/etc/fstab"
    done

    for f in $add_fstab; do
        cat "$f" >> "${initdir}/etc/fstab"
    done

    if [[ $dracutsysrootdir$systemdutildir ]]; then
        if [ -d ${initdir}/$systemdutildir ]; then
            mkdir -p ${initdir}/etc/conf.d
            {
                printf "%s\n" "systemdutildir=\"$systemdutildir\""
                printf "%s\n" "systemdsystemunitdir=\"$systemdsystemunitdir\""
                printf "%s\n" "systemdsystemconfdir=\"$systemdsystemconfdir\""
            } > ${initdir}/etc/conf.d/systemd.conf
        fi
    fi

    if [[ $DRACUT_RESOLVE_LAZY ]] && [[ $DRACUT_INSTALL ]]; then
        dinfo "*** Resolving executable dependencies ***"
        find "$initdir" -type f -perm /0111 -not -path '*.ko' -print0 \
        | xargs -r -0 $DRACUT_INSTALL ${initdir:+-D "$initdir"} ${dracutsysrootdir:+-r "$dracutsysrootdir"} -R ${DRACUT_FIPS_MODE:+-f} --
        dinfo "*** Resolving executable dependencies done ***"
    fi

    # Now we are done with lazy resolving, always install dependencies
    unset DRACUT_RESOLVE_LAZY
    export DRACUT_RESOLVE_DEPS=1

    # libpthread workaround: pthread_cancel wants to dlopen libgcc_s.so
    for _dir in $libdirs; do
        for _f in "$dracutsysrootdir$_dir/libpthread.so"*; do
            [[ -e "$_f" ]] || continue
            inst_libdir_file "libgcc_s.so*"
            break 2
        done
    done
fi

for ((i=0; i < ${#include_src[@]}; i++)); do
    src="${include_src[$i]}"
    target="${include_target[$i]}"
    if [[ $src && $target ]]; then
        if [[ -f $src ]]; then
            inst $src $target
        elif [[ -d $src ]]; then
            ddebug "Including directory: $src"
            destdir="${initdir}/${target}"
            mkdir -p "$destdir"
            # check for preexisting symlinks, so we can cope with the
            # symlinks to $prefix
            # Objectname is a file or a directory
            for objectname in "$src"/*; do
                [[ -e "$objectname" || -h "$objectname" ]] || continue
                if [[ -d "$objectname" ]]; then
                    # objectname is a directory, let's compute the final directory name
                    object_destdir=${destdir}/${objectname#$src/}
                    if ! [[ -e "$object_destdir" ]]; then
                        mkdir -m 0755 -p "$object_destdir"
                        chmod --reference="$objectname" "$object_destdir"
                    fi
                    $DRACUT_CP -t "$object_destdir" "$dracutsysrootdir$objectname"/*
                else
                    $DRACUT_CP -t "$destdir" "$dracutsysrootdir$objectname"
                fi
            done
        elif [[ -e $src ]]; then
            derror "$src is neither a directory nor a regular file"
        else
            derror "$src doesn't exist"
        fi
    fi
done

if [[ $kernel_only != yes ]]; then
    # make sure that library links are correct and up to date
    for f in $dracutsysrootdir/etc/ld.so.conf $dracutsysrootdir/etc/ld.so.conf.d/*; do
        [[ -f $f ]] && inst_simple "${f#$dracutsysrootdir}"
    done
    if ! $DRACUT_LDCONFIG -r "$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
fi

if [[ $do_hardlink = yes ]] && command -v hardlink >/dev/null; then
    dinfo "*** Hardlinking files ***"
    hardlink "$initdir" 2>&1
    dinfo "*** Hardlinking files done ***"
fi

# strip binaries
if [[ $do_strip = yes ]] ; then
    # Prefer strip from elfutils for package size
    declare strip_cmd=$(command -v eu-strip)
    test -z "$strip_cmd" && strip_cmd="strip"

    for p in $strip_cmd xargs find; do
        if ! type -P $p >/dev/null; then
            dinfo "Could not find '$p'. Not stripping the initramfs."
            do_strip=no
        fi
    done
fi

# cleanup empty ldconfig_paths directories
for d in $(ldconfig_paths); do
    rmdir -p --ignore-fail-on-non-empty "$initdir/$d" >/dev/null 2>&1
done

if [[ $early_microcode = yes ]]; then
    dinfo "*** Generating early-microcode cpio image ***"
    ucode_dir=(amd-ucode intel-ucode)
    ucode_dest=(AuthenticAMD.bin GenuineIntel.bin)
    _dest_dir="$early_cpio_dir/d/kernel/x86/microcode"
    _dest_idx="0 1"
    mkdir -p $_dest_dir
    if [[ $hostonly ]]; then
        [[ $(get_cpu_vendor) == "AMD" ]] && _dest_idx="0"
        [[ $(get_cpu_vendor) == "Intel" ]] && _dest_idx="1"
    fi
    for idx in $_dest_idx; do
        _fw=${ucode_dir[$idx]}
        for _fwdir in $fw_dir; do
            if [[ -d $_fwdir && -d $_fwdir/$_fw ]]; then
                _src="*"
                dinfo "*** Constructing ${ucode_dest[$idx]} ***"
                if [[ $hostonly ]]; then
                    _src=$(get_ucode_file)
                    [[ $_src ]] || break
                    [[ -r $_fwdir/$_fw/$_src ]] || _src="${_src}.early"
                    [[ -r $_fwdir/$_fw/$_src ]] || break
                fi

                for i in $_fwdir/$_fw/$_src; do
                    [ -e "$i" ] && break
                    break 2
                done
                for i in $_fwdir/$_fw/$_src; do
                    [[ -e "$i" ]] || continue
                    # skip gpg files
                    str_ends "$i" ".asc" && continue
                    cat "$i" >> $_dest_dir/${ucode_dest[$idx]}
                done
                create_early_cpio="yes"
            fi
        done
        if [[ ! -e "$_dest_dir/${ucode_dest[$idx]}" ]]; then
            cd "$early_cpio_dir/d"
            for _ucodedir in "${early_microcode_image_dir[@]}"; do
                for _ucodename in "${early_microcode_image_name[@]}"; do
                    [[ -e "$_ucodedir/$_ucodename" ]] && \
                    cpio --extract --file "$_ucodedir/$_ucodename" --quiet \
                         "kernel/x86/microcode/${ucode_dest[$idx]}"
                    if [[ -e "$_dest_dir/${ucode_dest[$idx]}" ]]; then
                        dinfo "*** Using microcode found in '$_ucodedir/$_ucodename' ***"
                        create_early_cpio="yes"
                        break 2
                    fi
                done
            done
        fi
    done
fi

if [[ $acpi_override = yes ]] && [[ -d $acpi_table_dir ]]; then
    dinfo "*** Packaging ACPI tables to override BIOS provided ones ***"
    _dest_dir="$early_cpio_dir/d/kernel/firmware/acpi"
    mkdir -p $_dest_dir
    for table in $acpi_table_dir/*.aml; do
        dinfo "   Adding ACPI table: $table"
        $DRACUT_CP $table $_dest_dir
        create_early_cpio="yes"
    done
fi

dinfo "*** Store current command line parameters ***"
if ! ( echo $PARMS_TO_STORE > $initdir/lib/dracut/build-parameter.txt ); then
    dfatal "Could not store the current command line parameters"
    exit 1
fi

if [[ $hostonly_cmdline == "yes" ]] ; then
    unset _stored_cmdline
    if [ -d $initdir/etc/cmdline.d ];then
        dinfo "Stored kernel commandline:"
        for conf in $initdir/etc/cmdline.d/*.conf ; do
            [ -e "$conf" ] || continue
            dinfo "$(< $conf)"
            _stored_cmdline=1
        done
    fi
    if ! [[ $_stored_cmdline ]]; then
        dinfo "No dracut internal kernel commandline stored in the initramfs"
    fi
fi

if dracut_module_included "squash"; then
    dinfo "*** Install squash loader ***"
    if ! check_kernel_config CONFIG_SQUASHFS; then
        dfatal "CONFIG_SQUASHFS have to be enabled for dracut squash module to work"
        exit 1
    fi
    if ! check_kernel_config CONFIG_OVERLAY_FS; then
        dfatal "CONFIG_OVERLAY_FS have to be enabled for dracut squash module to work"
        exit 1
    fi
    if ! check_kernel_config CONFIG_DEVTMPFS; then
        dfatal "CONFIG_DEVTMPFS have to be enabled for dracut squash module to work"
        exit 1
    fi

    readonly squash_dir="$initdir/squash/root"
    readonly squash_img=$initdir/squash/root.img

    # Currently only move "usr" "etc" to squashdir
    readonly squash_candidate=( "usr" "etc" )

    mkdir -m 0755 -p $squash_dir
    for folder in "${squash_candidate[@]}"; do
        mv $initdir/$folder $squash_dir/$folder
    done

    # Move some files out side of the squash image, including:
    # - Files required to boot and mount the squashfs image
    # - Files need to be accessible without mounting the squash image
    required_in_root() {
        local file=$1
        local _sqsh_file=$squash_dir/$file
        local _init_file=$initdir/$file

        if [[ -e $_init_file ]]; then
            return
        fi

        if [[ ! -e $_sqsh_file ]] && [[ ! -L $_sqsh_file ]]; then
            derror "$file is required to boot a squashed initramfs but it's not installed!"
            return
        fi

        if [[ ! -d $(dirname $_init_file) ]]; then
            required_in_root $(dirname $file)
        fi

        if [[ -L $_sqsh_file ]]; then
          cp --preserve=all -P $_sqsh_file $_init_file
          _sqsh_file=$(realpath $_sqsh_file 2>/dev/null)
          if [[ -e $_sqsh_file ]] && [[ "$_sqsh_file" == "$squash_dir"* ]]; then
            # Relative symlink
            required_in_root ${_sqsh_file#$squash_dir/}
            return
          fi
          if [[ -e $squash_dir$_sqsh_file ]]; then
            # Absolute symlink
            required_in_root ${_sqsh_file#/}
            return
          fi
          required_in_root ${module_spec#$squash_dir/}
        else
          if [[ -d $_sqsh_file ]]; then
            mkdir $_init_file
          else
            mv $_sqsh_file $_init_file
          fi
        fi
    }

    required_in_root etc/initrd-release

    for module_spec in $squash_dir/usr/lib/modules/*/modules.*;
    do
        required_in_root ${module_spec#$squash_dir/}
    done

    for dracut_spec in $squash_dir/usr/lib/dracut/*;
    do
        required_in_root ${dracut_spec#$squash_dir/}
    done

    mv $initdir/init $initdir/init.stock
    ln -s squash/init.sh $initdir/init

    # Reinstall required files for the squash image setup script.
    # We have moved them inside the squashed image, but they need to be
    # accessible before mounting the image.
    inst_multiple "echo" "sh" "mount" "modprobe" "mkdir"
    hostonly="" instmods "loop" "squashfs" "overlay"

    # Only keep systemctl outsite if we need switch root
    if [[ ! -f "$initdir/lib/dracut/no-switch-root" ]]; then
      inst "systemctl"
    fi

    for folder in "${squash_candidate[@]}"; do
        # Remove duplicated files in squashfs image, save some more space
        [[ ! -d $initdir/$folder/ ]] && continue
        for file in $(find $initdir/$folder/ -not -type d);
        do
            if [[ -e $squash_dir${file#$initdir} ]]; then
                mv $squash_dir${file#$initdir} $file
            fi
        done
    done
fi

if [[ $do_strip = yes ]] && ! [[ $DRACUT_FIPS_MODE ]]; then
    dinfo "*** Stripping files ***"
    find "$initdir" -type f \
        -executable -not -path '*/lib/modules/*.ko' -print0 \
        | xargs -r -0 $strip_cmd -g -p 2>/dev/null

    # strip kernel modules, but do not touch signed modules
    find "$initdir" -type f -path '*/lib/modules/*.ko' -print0 \
        | while read -r -d $'\0' f || [ -n "$f" ]; do
        SIG=$(tail -c 28 "$f" | tr -d '\000')
        [[ $SIG == '~Module signature appended~' ]] || { printf "%s\000" "$f"; }
    done | xargs -r -0 $strip_cmd -g -p
    dinfo "*** Stripping files done ***"
fi

if dracut_module_included "squash"; then
    dinfo "*** Squashing the files inside the initramfs ***"
    mksquashfs $squash_dir $squash_img -no-xattrs -no-exports -noappend -always-use-fragments -comp xz -Xdict-size 100% -no-progress 1> /dev/null

    if [[ $? != 0 ]]; then
        dfatal "dracut: Failed making squash image"
        exit 1
    fi

    rm -rf $squash_dir
    dinfo "*** Squashing the files inside the initramfs done ***"
fi

dinfo "*** Creating image file '$outfile' ***"

if [[ $uefi = yes ]]; then
    readonly uefi_outdir="$DRACUT_TMPDIR/uefi"
    mkdir "$uefi_outdir"
fi

if [[ $DRACUT_REPRODUCIBLE ]]; then
    find "$initdir" -newer "$dracutbasedir/dracut-functions.sh" -print0 \
        | xargs -r -0 touch -h -m -c -r "$dracutbasedir/dracut-functions.sh"

    if [[ "$(cpio --help)" == *--reproducible* ]]; then
        CPIO_REPRODUCIBLE=1
    else
        dinfo "cpio does not support '--reproducible'. Resulting image will not be reproducible."
    fi
fi

[[ "$EUID" != 0 ]] && cpio_owner_root="-R 0:0"

if [[ $create_early_cpio = yes ]]; then
    echo 1 > "$early_cpio_dir/d/early_cpio"

    if [[ $DRACUT_REPRODUCIBLE ]]; then
        find "$early_cpio_dir/d" -newer "$dracutbasedir/dracut-functions.sh" -print0 \
            | xargs -r -0 touch -h -m -c -r "$dracutbasedir/dracut-functions.sh"
    fi

    # The microcode blob is _before_ the initramfs blob, not after
    if ! (
            umask 077; cd "$early_cpio_dir/d"
            find . -print0 | sort -z \
                | cpio ${CPIO_REPRODUCIBLE:+--reproducible} --null $cpio_owner_root -H newc -o --quiet > "${DRACUT_TMPDIR}/initramfs.img"
        ); then
        dfatal "dracut: creation of $outfile failed"
        exit 1
    fi
fi

if ! (
        umask 077; cd "$initdir"
        find . -print0 | sort -z \
            | cpio ${CPIO_REPRODUCIBLE:+--reproducible} --null $cpio_owner_root -H newc -o --quiet \
            | $compress >> "${DRACUT_TMPDIR}/initramfs.img"
    ); then
    dfatal "dracut: creation of $outfile failed"
    exit 1
fi

if (( maxloglvl >= 5 )) && (( verbosity_mod_l >= 0 )); then
    if [[ $allowlocal ]]; then
        "$dracutbasedir/lsinitrd.sh" "${DRACUT_TMPDIR}/initramfs.img"| ddebug
    else
        lsinitrd "${DRACUT_TMPDIR}/initramfs.img"| ddebug
    fi
fi

umask 077

if [[ $uefi = yes ]]; then
    if [[ $kernel_cmdline ]]; then
        echo -n "$kernel_cmdline" > "$uefi_outdir/cmdline.txt"
    elif [[ $hostonly_cmdline = yes ]] && [ -d $initdir/etc/cmdline.d ];then
        for conf in $initdir/etc/cmdline.d/*.conf ; do
            [ -e "$conf" ] || continue
            printf "%s " "$(< $conf)" >> "$uefi_outdir/cmdline.txt"
        done
    else
        do_print_cmdline > "$uefi_outdir/cmdline.txt"
    fi
    echo -ne "\x00" >> "$uefi_outdir/cmdline.txt"

    dinfo "Using UEFI kernel cmdline:"
    dinfo $(tr -d '\000' < "$uefi_outdir/cmdline.txt")

    [[ -s $dracutsysrootdir/usr/lib/os-release ]] && uefi_osrelease="$dracutsysrootdir/usr/lib/os-release"
    [[ -s $dracutsysrootdir/etc/os-release ]] && uefi_osrelease="$dracutsysrootdir/etc/os-release"

    if objcopy \
           ${uefi_osrelease:+--add-section .osrel=$uefi_osrelease --change-section-vma .osrel=0x20000} \
           --add-section .cmdline="${uefi_outdir}/cmdline.txt" --change-section-vma .cmdline=0x30000 \
           --add-section .linux="$kernel_image" --change-section-vma .linux=0x40000 \
           --add-section .initrd="${DRACUT_TMPDIR}/initramfs.img" --change-section-vma .initrd=0x3000000 \
           "$uefi_stub" "${uefi_outdir}/linux.efi"; then
        if [[ -n "${uefi_secureboot_key}" && -n "${uefi_secureboot_cert}" ]]; then \
            if sbsign \
                    --key "${uefi_secureboot_key}" \
                    --cert "${uefi_secureboot_cert}" \
                    --output "$outfile" "${uefi_outdir}/linux.efi"; then
                dinfo "*** Creating signed UEFI image file '$outfile' done ***"
            else
                dfatal "*** Creating signed UEFI image file '$outfile' failed ***"
                exit 1
            fi
        else
            if cp --reflink=auto "${uefi_outdir}/linux.efi" "$outfile"; then
                dinfo "*** Creating UEFI image file '$outfile' done ***"
            fi
        fi
    else
        rm -f -- "$outfile"
        dfatal "*** Creating UEFI image file '$outfile' failed ***"
        exit 1
    fi
else
    if cp --reflink=auto "${DRACUT_TMPDIR}/initramfs.img" "$outfile"; then
        dinfo "*** Creating initramfs image file '$outfile' done ***"
    else
        rm -f -- "$outfile"
        dfatal "dracut: creation of $outfile failed"
        exit 1
    fi
fi

command -v restorecon &>/dev/null && restorecon -- "$outfile"

# We sync/fsfreeze only if we're operating on a live booted system.
# It's possible for e.g. `kernel` to be installed as an RPM BuildRequires or equivalent,
# and there's no reason to sync, and *definitely* no reason to fsfreeze.
# Another case where this happens is rpm-ostree, which performs its own sync/fsfreeze
# globally.  See e.g. https://github.com/ostreedev/ostree/commit/8642ef5ab3fec3ac8eb8f193054852f83a8bc4d0
if test -d $dracutsysrootdir/run/systemd/system; then
    if ! sync "$outfile" 2> /dev/null; then
        dinfo "dracut: sync operation on newly created initramfs $outfile failed"
        exit 1
    fi

    # use fsfreeze only if we're not writing to /
    if [[ "$(stat -c %m -- "$outfile")" != "/" && "$(stat -f -c %T -- "$outfile")" != "msdos" ]]; then
        if ! $(fsfreeze -f $(dirname "$outfile") 2>/dev/null && fsfreeze -u $(dirname "$outfile") 2>/dev/null); then
            dinfo "dracut: warning: could not fsfreeze $(dirname "$outfile")"
        fi
    fi
fi

exit 0