Adding upstream version 060+5.upstream/060+5

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 1083 insertions, 0 deletions

diff --git a/dracut-functions.sh b/dracut-functions.sh
new file mode 100755
index 0000000..4535871
--- /dev/null
+++ b/dracut-functions.sh
@@ -0,0 +1,1083 @@
+#!/bin/bash
+#
+# functions used by dracut and other tools.
+#
+# Copyright 2005-2009 Red Hat, Inc.  All rights reserved.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+export LC_MESSAGES=C
+
+# 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"* ]]; }
+# Generic glob matching function. If glob pattern $2 matches anywhere in $1, OK
+strglobin() { [[ $1 == *$2* ]]; }
+# Generic glob matching function. If glob pattern $2 matches all of $1, OK
+# shellcheck disable=SC2053
+strglob() { [[ $1 == $2 ]]; }
+# returns OK if $1 contains literal string $2 at the beginning, and isn't empty
+str_starts() { [ "${1#"$2"*}" != "$1" ]; }
+# returns OK if $1 contains literal string $2 at the end, and isn't empty
+str_ends() { [ "${1%*"$2"}" != "$1" ]; }
+
+trim() {
+    local var="$*"
+    var="${var#"${var%%[![:space:]]*}"}" # remove leading whitespace characters
+    var="${var%"${var##*[![:space:]]}"}" # remove trailing whitespace characters
+    printf "%s" "$var"
+}
+
+# find a binary.  If we were not passed the full path directly,
+# search in the usual places to find the binary.
+find_binary() {
+    local _delim
+    local _path
+    local l
+    local p
+    [[ -z ${1##/*} ]] || _delim="/"
+
+    if [[ $1 == *.so* ]]; then
+        for l in $libdirs; do
+            _path="${l}${_delim}${1}"
+            if { $DRACUT_LDD "${dracutsysrootdir}${_path}" &> /dev/null; }; then
+                printf "%s\n" "${_path}"
+                return 0
+            fi
+        done
+        _path="${_delim}${1}"
+        if { $DRACUT_LDD "${dracutsysrootdir}${_path}" &> /dev/null; }; then
+            printf "%s\n" "${_path}"
+            return 0
+        fi
+    fi
+    if [[ $1 == */* ]]; then
+        _path="${_delim}${1}"
+        if [[ -L ${dracutsysrootdir}${_path} ]] || [[ -x ${dracutsysrootdir}${_path} ]]; then
+            printf "%s\n" "${_path}"
+            return 0
+        fi
+    fi
+    for p in $DRACUT_PATH; do
+        _path="${p}${_delim}${1}"
+        if [[ -L ${dracutsysrootdir}${_path} ]] || [[ -x ${dracutsysrootdir}${_path} ]]; then
+            printf "%s\n" "${_path}"
+            return 0
+        fi
+    done
+
+    [[ -n $dracutsysrootdir ]] && return 1
+    type -P "${1##*/}"
+}
+
+ldconfig_paths() {
+    $DRACUT_LDCONFIG ${dracutsysrootdir:+-r ${dracutsysrootdir} -f /etc/ld.so.conf} -pN 2> /dev/null | grep -E -v '/(lib|lib64|usr/lib|usr/lib64)/[^/]*$' | sed -n 's,.* => \(.*\)/.*,\1,p' | sort | uniq
+}
+
+# Version comparison function.  Assumes Linux style version scheme.
+# $1 = version a
+# $2 = comparison op (gt, ge, eq, le, lt, ne)
+# $3 = version b
+vercmp() {
+    local _n1
+    read -r -a _n1 <<< "${1//./ }"
+    local _op=$2
+    local _n2
+    read -r -a _n2 <<< "${3//./ }"
+    local _i _res
+
+    for ((_i = 0; ; _i++)); do
+        if [[ ! ${_n1[_i]}${_n2[_i]} ]]; then
+            _res=0
+        elif ((${_n1[_i]:-0} > ${_n2[_i]:-0})); then
+            _res=1
+        elif ((${_n1[_i]:-0} < ${_n2[_i]:-0})); then
+            _res=2
+        else
+            continue
+        fi
+        break
+    done
+
+    case $_op in
+        gt) ((_res == 1)) ;;
+        ge) ((_res != 2)) ;;
+        eq) ((_res == 0)) ;;
+        le) ((_res != 1)) ;;
+        lt) ((_res == 2)) ;;
+        ne) ((_res != 0)) ;;
+    esac
+}
+
+# Create all subdirectories for given path without creating the last element.
+# $1 = path
+mksubdirs() {
+    # shellcheck disable=SC2174
+    [[ -e ${1%/*} ]] || mkdir -m 0755 -p -- "${1%/*}"
+}
+
+# Function prints global variables in format name=value line by line.
+# $@ = list of global variables' name
+print_vars() {
+    local _var _value
+
+    for _var in "$@"; do
+        eval printf -v _value "%s" \""\$$_var"\"
+        [[ ${_value} ]] && printf '%s="%s"\n' "$_var" "$_value"
+    done
+}
+
+# normalize_path <path>
+# Prints the normalized path, where it removes any duplicated
+# and trailing slashes.
+# Example:
+# $ normalize_path ///test/test//
+# /test/test
+normalize_path() {
+    # shellcheck disable=SC2064
+    trap "$(shopt -p extglob)" RETURN
+    shopt -q -s extglob
+    local p=${1//+(\/)//}
+    printf "%s\n" "${p%/}"
+}
+
+# convert_abs_rel <from> <to>
+# Prints the relative path, when creating a symlink to <to> from <from>.
+# Example:
+# $ convert_abs_rel /usr/bin/test /bin/test-2
+# ../../bin/test-2
+# $ ln -s $(convert_abs_rel /usr/bin/test /bin/test-2) /usr/bin/test
+convert_abs_rel() {
+    local __current __absolute __abssize __cursize __newpath
+    local -i __i __level
+
+    set -- "$(normalize_path "$1")" "$(normalize_path "$2")"
+
+    # corner case #1 - self looping link
+    [[ $1 == "$2" ]] && {
+        printf "%s\n" "${1##*/}"
+        return
+    }
+
+    # corner case #2 - own dir link
+    [[ ${1%/*} == "$2" ]] && {
+        printf ".\n"
+        return
+    }
+
+    IFS=/ read -r -a __current <<< "$1"
+    IFS=/ read -r -a __absolute <<< "$2"
+
+    __abssize=${#__absolute[@]}
+    __cursize=${#__current[@]}
+
+    while [[ ${__absolute[__level]} == "${__current[__level]}" ]]; do
+        ((__level++))
+        if ((__level > __abssize || __level > __cursize)); then
+            break
+        fi
+    done
+
+    for ((__i = __level; __i < __cursize - 1; __i++)); do
+        if ((__i > __level)); then
+            __newpath=$__newpath"/"
+        fi
+        __newpath=$__newpath".."
+    done
+
+    for ((__i = __level; __i < __abssize; __i++)); do
+        if [[ -n $__newpath ]]; then
+            __newpath=$__newpath"/"
+        fi
+        __newpath=$__newpath${__absolute[__i]}
+    done
+
+    printf -- "%s\n" "$__newpath"
+}
+
+# get_fs_env <device>
+# Get and the ID_FS_TYPE variable from udev for a device.
+# Example:
+# $ get_fs_env /dev/sda2
+# ext4
+get_fs_env() {
+    [[ $1 ]] || return
+    unset ID_FS_TYPE
+    ID_FS_TYPE=$(blkid -u filesystem -o export -- "$1" \
+        | while read -r line || [ -n "$line" ]; do
+            if [[ $line == "TYPE="* ]]; then
+                printf "%s" "${line#TYPE=}"
+                exit 0
+            fi
+        done)
+    if [[ $ID_FS_TYPE ]]; then
+        printf "%s" "$ID_FS_TYPE"
+        return 0
+    fi
+    return 1
+}
+
+# get_maj_min <device>
+# Prints the major and minor of a device node.
+# Example:
+# $ get_maj_min /dev/sda2
+# 8:2
+get_maj_min() {
+    local _majmin
+    local _out
+
+    if [[ $get_maj_min_cache_file ]]; then
+        _out="$(grep -m1 -oE "^$1 \S+$" "$get_maj_min_cache_file" | awk '{print $NF}')"
+    fi
+
+    if ! [[ "$_out" ]]; then
+        _majmin="$(stat -L -c '%t:%T' "$1" 2> /dev/null)"
+        _out="$(printf "%s" "$((0x${_majmin%:*})):$((0x${_majmin#*:}))")"
+        if [[ $get_maj_min_cache_file ]]; then
+            echo "$1 $_out" >> "$get_maj_min_cache_file"
+        fi
+    fi
+    echo -n "$_out"
+}
+
+# get_devpath_block <device>
+# get the DEVPATH in /sys of a block device
+get_devpath_block() {
+    local _majmin _i
+    _majmin=$(get_maj_min "$1")
+
+    for _i in /sys/block/*/dev /sys/block/*/*/dev; do
+        [[ -e $_i ]] || continue
+        if [[ $_majmin == "$(< "$_i")" ]]; then
+            printf "%s" "${_i%/dev}"
+            return 0
+        fi
+    done
+    return 1
+}
+
+# get a persistent path from a device
+get_persistent_dev() {
+    local i _tmp _dev _pol
+
+    _dev=$(get_maj_min "$1")
+    [ -z "$_dev" ] && return
+
+    if [[ -n $persistent_policy ]]; then
+        _pol="/dev/disk/${persistent_policy}/*"
+    else
+        _pol=
+    fi
+
+    for i in \
+        $_pol \
+        /dev/mapper/* \
+        /dev/disk/by-uuid/* \
+        /dev/disk/by-label/* \
+        /dev/disk/by-partuuid/* \
+        /dev/disk/by-partlabel/* \
+        /dev/disk/by-id/* \
+        /dev/disk/by-path/*; do
+        [[ -e $i ]] || continue
+        [[ $i == /dev/mapper/control ]] && continue
+        [[ $i == /dev/mapper/mpath* ]] && continue
+        _tmp=$(get_maj_min "$i")
+        if [ "$_tmp" = "$_dev" ]; then
+            printf -- "%s" "$i"
+            return
+        fi
+    done
+    printf -- "%s" "$1"
+}
+
+expand_persistent_dev() {
+    local _dev=$1
+
+    case "$_dev" in
+        LABEL=*)
+            _dev="/dev/disk/by-label/${_dev#LABEL=}"
+            ;;
+        UUID=*)
+            _dev="${_dev#UUID=}"
+            _dev="${_dev,,}"
+            _dev="/dev/disk/by-uuid/${_dev}"
+            ;;
+        PARTUUID=*)
+            _dev="${_dev#PARTUUID=}"
+            _dev="${_dev,,}"
+            _dev="/dev/disk/by-partuuid/${_dev}"
+            ;;
+        PARTLABEL=*)
+            _dev="/dev/disk/by-partlabel/${_dev#PARTLABEL=}"
+            ;;
+    esac
+    printf "%s" "$_dev"
+}
+
+shorten_persistent_dev() {
+    local _dev="$1"
+    case "$_dev" in
+        /dev/disk/by-uuid/*)
+            printf "%s" "UUID=${_dev##*/}"
+            ;;
+        /dev/disk/by-label/*)
+            printf "%s" "LABEL=${_dev##*/}"
+            ;;
+        /dev/disk/by-partuuid/*)
+            printf "%s" "PARTUUID=${_dev##*/}"
+            ;;
+        /dev/disk/by-partlabel/*)
+            printf "%s" "PARTLABEL=${_dev##*/}"
+            ;;
+        *)
+            printf "%s" "$_dev"
+            ;;
+    esac
+}
+
+# find_block_device <mountpoint>
+# Prints the major and minor number of the block device
+# for a given mountpoint.
+# Unless $use_fstab is set to "yes" the functions
+# uses /proc/self/mountinfo as the primary source of the
+# information and only falls back to /etc/fstab, if the mountpoint
+# is not found there.
+# Example:
+# $ find_block_device /usr
+# 8:4
+find_block_device() {
+    local _dev _majmin _find_mpt
+    _find_mpt="$1"
+
+    if [[ $use_fstab != yes ]]; then
+        [[ -d $_find_mpt/. ]]
+        findmnt -e -v -n -o 'MAJ:MIN,SOURCE' --target "$_find_mpt" | {
+            while read -r _majmin _dev || [ -n "$_dev" ]; do
+                if [[ -b $_dev ]]; then
+                    if ! [[ $_majmin ]] || [[ $_majmin == 0:* ]]; then
+                        _majmin=$(get_maj_min "$_dev")
+                    fi
+                    if [[ $_majmin ]]; then
+                        printf "%s\n" "$_majmin"
+                    else
+                        printf "%s\n" "$_dev"
+                    fi
+                    return 0
+                fi
+                if [[ $_dev == *:* ]]; then
+                    printf "%s\n" "$_dev"
+                    return 0
+                fi
+            done
+            return 1
+        } && return 0
+    fi
+    # fall back to /etc/fstab
+    [[ ! -f "$dracutsysrootdir"/etc/fstab ]] && return 1
+
+    findmnt -e --fstab -v -n -o 'MAJ:MIN,SOURCE' --target "$_find_mpt" | {
+        while read -r _majmin _dev || [ -n "$_dev" ]; do
+            if ! [[ $_dev ]]; then
+                _dev="$_majmin"
+                unset _majmin
+            fi
+            if [[ -b $_dev ]]; then
+                [[ $_majmin ]] || _majmin=$(get_maj_min "$_dev")
+                if [[ $_majmin ]]; then
+                    printf "%s\n" "$_majmin"
+                else
+                    printf "%s\n" "$_dev"
+                fi
+                return 0
+            fi
+            if [[ $_dev == *:* ]]; then
+                printf "%s\n" "$_dev"
+                return 0
+            fi
+        done
+        return 1
+    } && return 0
+
+    return 1
+}
+
+# find_mp_fstype <mountpoint>
+# Echo the filesystem type for a given mountpoint.
+# /proc/self/mountinfo is taken as the primary source of information
+# and /etc/fstab is used as a fallback.
+# No newline is appended!
+# Example:
+# $ find_mp_fstype /;echo
+# ext4
+find_mp_fstype() {
+    local _fs
+
+    if [[ $use_fstab != yes ]]; then
+        findmnt -e -v -n -o 'FSTYPE' --target "$1" | {
+            while read -r _fs || [ -n "$_fs" ]; do
+                [[ $_fs ]] || continue
+                [[ $_fs == "autofs" ]] && continue
+                printf "%s" "$_fs"
+                return 0
+            done
+            return 1
+        } && return 0
+    fi
+
+    [[ ! -f "$dracutsysrootdir"/etc/fstab ]] && return 1
+
+    findmnt --fstab -e -v -n -o 'FSTYPE' --target "$1" | {
+        while read -r _fs || [ -n "$_fs" ]; do
+            [[ $_fs ]] || continue
+            [[ $_fs == "autofs" ]] && continue
+            printf "%s" "$_fs"
+            return 0
+        done
+        return 1
+    } && return 0
+
+    return 1
+}
+
+# find_dev_fstype <device>
+# Echo the filesystem type for a given device.
+# /proc/self/mountinfo is taken as the primary source of information
+# and /etc/fstab is used as a fallback.
+# No newline is appended!
+# Example:
+# $ find_dev_fstype /dev/sda2;echo
+# ext4
+find_dev_fstype() {
+    local _find_dev _fs
+    _find_dev="$1"
+    if ! [[ $_find_dev == /dev* ]]; then
+        [[ -b "/dev/block/$_find_dev" ]] && _find_dev="/dev/block/$_find_dev"
+    fi
+
+    if [[ $use_fstab != yes ]]; then
+        findmnt -e -v -n -o 'FSTYPE' --source "$_find_dev" | {
+            while read -r _fs || [ -n "$_fs" ]; do
+                [[ $_fs ]] || continue
+                [[ $_fs == "autofs" ]] && continue
+                printf "%s" "$_fs"
+                return 0
+            done
+            return 1
+        } && return 0
+    fi
+
+    [[ ! -f "$dracutsysrootdir"/etc/fstab ]] && return 1
+
+    findmnt --fstab -e -v -n -o 'FSTYPE' --source "$_find_dev" | {
+        while read -r _fs || [ -n "$_fs" ]; do
+            [[ $_fs ]] || continue
+            [[ $_fs == "autofs" ]] && continue
+            printf "%s" "$_fs"
+            return 0
+        done
+        return 1
+    } && return 0
+
+    return 1
+}
+
+# find_mp_fsopts <mountpoint>
+# Echo the filesystem options for a given mountpoint.
+# /proc/self/mountinfo is taken as the primary source of information
+# and /etc/fstab is used as a fallback.
+# No newline is appended!
+# Example:
+# $ find_mp_fsopts /;echo
+# rw,relatime,discard,data=ordered
+find_mp_fsopts() {
+    if [[ $use_fstab != yes ]]; then
+        findmnt -e -v -n -o 'OPTIONS' --target "$1" 2> /dev/null && return 0
+    fi
+
+    [[ ! -f "$dracutsysrootdir"/etc/fstab ]] && return 1
+
+    findmnt --fstab -e -v -n -o 'OPTIONS' --target "$1"
+}
+
+# find_dev_fsopts <device>
+# Echo the filesystem options for a given device.
+# /proc/self/mountinfo is taken as the primary source of information
+# and /etc/fstab is used as a fallback.
+# if `use_fstab == yes`, then only `/etc/fstab` is used.
+#
+# Example:
+# $ find_dev_fsopts /dev/sda2
+# rw,relatime,discard,data=ordered
+find_dev_fsopts() {
+    local _find_dev
+    _find_dev="$1"
+    if ! [[ $_find_dev == /dev* ]]; then
+        [[ -b "/dev/block/$_find_dev" ]] && _find_dev="/dev/block/$_find_dev"
+    fi
+
+    if [[ $use_fstab != yes ]]; then
+        findmnt -e -v -n -o 'OPTIONS' --source "$_find_dev" 2> /dev/null && return 0
+    fi
+
+    [[ ! -f "$dracutsysrootdir"/etc/fstab ]] && return 1
+
+    findmnt --fstab -e -v -n -o 'OPTIONS' --source "$_find_dev"
+}
+
+# finds the major:minor of the block device backing the root filesystem.
+find_root_block_device() { find_block_device /; }
+
+# for_each_host_dev_fs <func>
+# Execute "<func> <dev> <filesystem>" for every "<dev> <fs>" pair found
+# in ${host_fs_types[@]}
+for_each_host_dev_fs() {
+    local _func="$1"
+    local _dev
+    local _ret=1
+
+    [[ "${#host_fs_types[@]}" ]] || return 2
+
+    for _dev in "${!host_fs_types[@]}"; do
+        $_func "$_dev" "${host_fs_types[$_dev]}" && _ret=0
+    done
+    return $_ret
+}
+
+host_fs_all() {
+    printf "%s\n" "${host_fs_types[@]}"
+}
+
+# Walk all the slave relationships for a given block device.
+# Stop when our helper function returns success
+# $1 = function to call on every found block device
+# $2 = block device in major:minor format
+check_block_and_slaves() {
+    local _x
+    [[ -b /dev/block/$2 ]] || return 1 # Not a block device? So sorry.
+    if ! lvm_internal_dev "$2"; then "$1" "$2" && return; fi
+    check_vol_slaves "$@" && return 0
+    if [[ -f /sys/dev/block/$2/../dev ]] && [[ /sys/dev/block/$2/../subsystem -ef /sys/class/block ]]; then
+        check_block_and_slaves "$1" "$(< "/sys/dev/block/$2/../dev")" && return 0
+    fi
+    for _x in /sys/dev/block/"$2"/slaves/*; do
+        [[ -f $_x/dev ]] || continue
+        [[ $_x/subsystem -ef /sys/class/block ]] || continue
+        check_block_and_slaves "$1" "$(< "$_x/dev")" && return 0
+    done
+    return 1
+}
+
+check_block_and_slaves_all() {
+    local _x _ret=1
+    [[ -b /dev/block/$2 ]] || return 1 # Not a block device? So sorry.
+    if ! lvm_internal_dev "$2" && "$1" "$2"; then
+        _ret=0
+    fi
+    check_vol_slaves_all "$@" && return 0
+    if [[ -f /sys/dev/block/$2/../dev ]] && [[ /sys/dev/block/$2/../subsystem -ef /sys/class/block ]]; then
+        check_block_and_slaves_all "$1" "$(< "/sys/dev/block/$2/../dev")" && _ret=0
+    fi
+    for _x in /sys/dev/block/"$2"/slaves/*; do
+        [[ -f $_x/dev ]] || continue
+        [[ $_x/subsystem -ef /sys/class/block ]] || continue
+        check_block_and_slaves_all "$1" "$(< "$_x/dev")" && _ret=0
+    done
+    return $_ret
+}
+# for_each_host_dev_and_slaves <func>
+# Execute "<func> <dev>" for every "<dev>" found
+# in ${host_devs[@]} and their slaves
+for_each_host_dev_and_slaves_all() {
+    local _func="$1"
+    local _dev
+    local _ret=1
+
+    [[ "${host_devs[*]}" ]] || return 2
+
+    for _dev in "${host_devs[@]}"; do
+        [[ -b $_dev ]] || continue
+        if check_block_and_slaves_all "$_func" "$(get_maj_min "$_dev")"; then
+            _ret=0
+        fi
+    done
+    return $_ret
+}
+
+for_each_host_dev_and_slaves() {
+    local _func="$1"
+    local _dev
+
+    [[ "${host_devs[*]}" ]] || return 2
+
+    for _dev in "${host_devs[@]}"; do
+        [[ -b $_dev ]] || continue
+        check_block_and_slaves "$_func" "$(get_maj_min "$_dev")" && return 0
+    done
+    return 1
+}
+
+# /sys/dev/block/major:minor is symbol link to real hardware device
+# go downstream $(realpath /sys/dev/block/major:minor) to detect driver
+get_blockdev_drv_through_sys() {
+    local _block_mods=""
+    local _path
+
+    _path=$(realpath "$1")
+    while true; do
+        if [[ -L "$_path"/driver/module ]]; then
+            _mod=$(realpath "$_path"/driver/module)
+            _mod=$(basename "$_mod")
+            _block_mods="$_block_mods $_mod"
+        fi
+        _path=$(dirname "$_path")
+        if [[ $_path == '/sys/devices' ]] || [[ $_path == '/' ]]; then
+            break
+        fi
+    done
+    echo "$_block_mods"
+}
+
+# ugly workaround for the lvm design
+# There is no volume group device,
+# so, there are no slave devices for volume groups.
+# Logical volumes only have the slave devices they really live on,
+# but you cannot create the logical volume without the volume group.
+# And the volume group might be bigger than the devices the LV needs.
+check_vol_slaves() {
+    local _vg _pv _dm _majmin
+    _majmin="$2"
+    _dm=/sys/dev/block/$_majmin/dm
+    [[ -f $_dm/uuid && $(< "$_dm"/uuid) =~ LVM-* ]] || return 1
+    _vg=$(dmsetup splitname --noheadings -o vg_name "$(< "$_dm/name")")
+    # strip space
+    _vg="${_vg//[[:space:]]/}"
+    if [[ $_vg ]]; then
+        for _pv in $(lvm vgs --noheadings -o pv_name "$_vg" 2> /dev/null); do
+            check_block_and_slaves "$1" "$(get_maj_min "$_pv")" && return 0
+        done
+    fi
+    return 1
+}
+
+check_vol_slaves_all() {
+    local _vg _pv _majmin
+    _majmin="$2"
+    _dm="/sys/dev/block/$_majmin/dm"
+    [[ -f $_dm/uuid && $(< "$_dm"/uuid) =~ LVM-* ]] || return 1
+    _vg=$(dmsetup splitname --noheadings -o vg_name "$(< "$_dm/name")")
+    # strip space
+    _vg="${_vg//[[:space:]]/}"
+    if [[ $_vg ]]; then
+        # when filter/global_filter is set, lvm may be failed
+        if ! lvm lvs --noheadings -o vg_name "$_vg" 2> /dev/null 1> /dev/null; then
+            return 1
+        fi
+
+        for _pv in $(lvm vgs --noheadings -o pv_name "$_vg" 2> /dev/null); do
+            check_block_and_slaves_all "$1" "$(get_maj_min "$_pv")"
+        done
+        return 0
+    fi
+    return 1
+}
+
+# fs_get_option <filesystem options> <search for option>
+# search for a specific option in a bunch of filesystem options
+# and return the value
+fs_get_option() {
+    local _fsopts=$1
+    local _option=$2
+    local OLDIFS="$IFS"
+    IFS=,
+    # shellcheck disable=SC2086
+    set -- $_fsopts
+    IFS="$OLDIFS"
+    while [ $# -gt 0 ]; do
+        case $1 in
+            $_option=*)
+                echo "${1#"${_option}"=}"
+                break
+                ;;
+        esac
+        shift
+    done
+}
+
+check_kernel_config() {
+    local _config_opt="$1"
+    local _config_file
+    [[ -f $dracutsysrootdir/boot/config-$kernel ]] \
+        && _config_file="/boot/config-$kernel"
+    [[ -f $dracutsysrootdir/lib/modules/$kernel/config ]] \
+        && _config_file="/lib/modules/$kernel/config"
+
+    # no kernel config file, so return true
+    [[ $_config_file ]] || return 0
+
+    grep -q -F "${_config_opt}=" "$dracutsysrootdir$_config_file" && return 0
+    return 1
+}
+
+# 0 if the kernel module is either built-in or available
+# 1 if the kernel module is not enabled
+check_kernel_module() {
+    modprobe -d "$dracutsysrootdir" -S "$kernel" --dry-run "$1" &> /dev/null || return 1
+}
+
+# get_cpu_vendor
+# Only two values are returned: AMD or Intel
+get_cpu_vendor() {
+    if grep -qE AMD /proc/cpuinfo; then
+        printf "AMD"
+    fi
+    if grep -qE Intel /proc/cpuinfo; then
+        printf "Intel"
+    fi
+}
+
+# get_host_ucode
+# Get the hosts' ucode file based on the /proc/cpuinfo
+get_ucode_file() {
+    local family
+    local model
+    local stepping
+    family=$(grep -E "cpu family" /proc/cpuinfo | head -1 | sed "s/.*:\ //")
+    model=$(grep -E "model" /proc/cpuinfo | grep -v name | head -1 | sed "s/.*:\ //")
+    stepping=$(grep -E "stepping" /proc/cpuinfo | head -1 | sed "s/.*:\ //")
+
+    if [[ "$(get_cpu_vendor)" == "AMD" ]]; then
+        if [[ $family -ge 21 ]]; then
+            printf "microcode_amd_fam%xh.bin" "$family"
+        else
+            printf "microcode_amd.bin"
+        fi
+    fi
+    if [[ "$(get_cpu_vendor)" == "Intel" ]]; then
+        # The /proc/cpuinfo are in decimal.
+        printf "%02x-%02x-%02x" "${family}" "${model}" "${stepping}"
+    fi
+}
+
+# Not every device in /dev/mapper should be examined.
+# If it is an LVM device, touch only devices which have /dev/VG/LV symlink.
+lvm_internal_dev() {
+    local dev_dm_dir=/sys/dev/block/$1/dm
+    [[ ! -f $dev_dm_dir/uuid || $(< "$dev_dm_dir"/uuid) != LVM-* ]] && return 1 # Not an LVM device
+    local DM_VG_NAME DM_LV_NAME DM_LV_LAYER
+    eval "$(dmsetup splitname --nameprefixes --noheadings --rows "$(< "$dev_dm_dir"/name)" 2> /dev/null)"
+    [[ ${DM_VG_NAME} ]] && [[ ${DM_LV_NAME} ]] || return 0 # Better skip this!
+    [[ ${DM_LV_LAYER} ]] || [[ ! -L /dev/${DM_VG_NAME}/${DM_LV_NAME} ]]
+}
+
+btrfs_devs() {
+    local _mp="$1"
+    btrfs device usage "$_mp" \
+        | while read -r _dev _; do
+            str_starts "$_dev" "/" || continue
+            _dev=${_dev%,}
+            printf -- "%s\n" "$_dev"
+        done
+}
+
+zfs_devs() {
+    local _mp="$1"
+    zpool list -H -v -P "${_mp%%/*}" | awk -F$'\t' '$2 ~ /^\// {print $2}' \
+        | while read -r _dev; do
+            realpath "${_dev}"
+        done
+}
+
+iface_for_remote_addr() {
+    # shellcheck disable=SC2046
+    set -- $(ip -o route get to "$1")
+    while [ $# -gt 0 ]; do
+        case $1 in
+            dev)
+                echo "$2"
+                return
+                ;;
+        esac
+        shift
+    done
+}
+
+local_addr_for_remote_addr() {
+    # shellcheck disable=SC2046
+    set -- $(ip -o route get to "$1")
+    while [ $# -gt 0 ]; do
+        case $1 in
+            src)
+                echo "$2"
+                return
+                ;;
+        esac
+        shift
+    done
+}
+
+peer_for_addr() {
+    local addr=$1
+    local qtd
+
+    # quote periods in IPv4 address
+    qtd=${addr//./\\.}
+    ip -o addr show \
+        | sed -n 's%^.* '"$qtd"' peer \([0-9a-f.:]\{1,\}\(/[0-9]*\)\?\).*$%\1%p'
+}
+
+netmask_for_addr() {
+    local addr=$1
+    local qtd
+
+    # quote periods in IPv4 address
+    qtd=${addr//./\\.}
+    ip -o addr show | sed -n 's,^.* '"$qtd"'/\([0-9]*\) .*$,\1,p'
+}
+
+gateway_for_iface() {
+    local ifname=$1 addr=$2
+
+    case $addr in
+        *.*) proto=4 ;;
+        *:*) proto=6 ;;
+        *) return ;;
+    esac
+    ip -o -$proto route show \
+        | sed -n "s/^default via \([0-9a-z.:]\{1,\}\) dev $ifname .*\$/\1/p"
+}
+
+# This works only for ifcfg-style network configuration!
+bootproto_for_iface() {
+    local ifname=$1
+    local dir
+
+    # follow ifcfg settings for boot protocol
+    for dir in network-scripts network; do
+        [ -f "/etc/sysconfig/$dir/ifcfg-$ifname" ] && {
+            sed -n "s/BOOTPROTO=[\"']\?\([[:alnum:]]\{1,\}\)[\"']\?.*\$/\1/p" \
+                "/etc/sysconfig/$dir/ifcfg-$ifname"
+            return
+        }
+    done
+}
+
+is_unbracketed_ipv6_address() {
+    strglob "$1" '*:*' && ! strglob "$1" '\[*:*\]'
+}
+
+# Create an ip= string to set up networking such that the given
+# remote address can be reached
+ip_params_for_remote_addr() {
+    local remote_addr=$1
+    local ifname local_addr peer netmask gateway ifmac
+
+    [[ $remote_addr ]] || return 1
+    ifname=$(iface_for_remote_addr "$remote_addr")
+    [[ $ifname ]] || {
+        berror "failed to determine interface to connect to $remote_addr"
+        return 1
+    }
+
+    # ifname clause to bind the interface name to a MAC address
+    if [ -d "/sys/class/net/$ifname/bonding" ]; then
+        dinfo "Found bonded interface '${ifname}'. Make sure to provide an appropriate 'bond=' cmdline."
+    elif [ -e "/sys/class/net/$ifname/address" ]; then
+        ifmac=$(cat "/sys/class/net/$ifname/address")
+        [[ $ifmac ]] && printf 'ifname=%s:%s ' "${ifname}" "${ifmac}"
+    fi
+
+    bootproto=$(bootproto_for_iface "$ifname")
+    case $bootproto in
+        dhcp | dhcp6 | auto6) ;;
+        dhcp4)
+            bootproto=dhcp
+            ;;
+        static* | "")
+            bootproto=
+            ;;
+        *)
+            derror "bootproto \"$bootproto\" is unsupported by dracut, trying static configuration"
+            bootproto=
+            ;;
+    esac
+    if [[ $bootproto ]]; then
+        printf 'ip=%s:%s ' "${ifname}" "${bootproto}"
+    else
+        local_addr=$(local_addr_for_remote_addr "$remote_addr")
+        [[ $local_addr ]] || {
+            berror "failed to determine local address to connect to $remote_addr"
+            return 1
+        }
+        peer=$(peer_for_addr "$local_addr")
+        # Set peer or netmask, but not both
+        [[ $peer ]] || netmask=$(netmask_for_addr "$local_addr")
+        gateway=$(gateway_for_iface "$ifname" "$local_addr")
+        # Quote IPv6 addresses with brackets
+        is_unbracketed_ipv6_address "$local_addr" && local_addr="[$local_addr]"
+        is_unbracketed_ipv6_address "$peer" && peer="[$peer]"
+        is_unbracketed_ipv6_address "$gateway" && gateway="[$gateway]"
+        printf 'ip=%s:%s:%s:%s::%s:none ' \
+            "${local_addr}" "${peer}" "${gateway}" "${netmask}" "${ifname}"
+    fi
+
+}
+
+# block_is_nbd <maj:min>
+# Check whether $1 is an nbd device
+block_is_nbd() {
+    [[ -b /dev/block/$1 && $1 == 43:* ]]
+}
+
+# block_is_iscsi <maj:min>
+# Check whether $1 is an iSCSI device
+block_is_iscsi() {
+    local _dir
+    local _dev=$1
+    [[ -L "/sys/dev/block/$_dev" ]] || return
+    _dir="$(readlink -f "/sys/dev/block/$_dev")" || return
+    until [[ -d "$_dir/sys" || -d "$_dir/iscsi_session" ]]; do
+        _dir="$_dir/.."
+    done
+    [[ -d "$_dir/iscsi_session" ]]
+}
+
+# block_is_fcoe <maj:min>
+# Check whether $1 is an FCoE device
+# Will not work for HBAs that hide the ethernet aspect
+# completely and present a pure FC device
+block_is_fcoe() {
+    local _dir
+    local _dev=$1
+    [[ -L "/sys/dev/block/$_dev" ]] || return
+    _dir="$(readlink -f "/sys/dev/block/$_dev")"
+    until [[ -d "$_dir/sys" ]]; do
+        _dir="$_dir/.."
+        if [[ -d "$_dir/subsystem" ]]; then
+            subsystem=$(basename "$(readlink "$_dir"/subsystem)")
+            [[ $subsystem == "fcoe" ]] && return 0
+        fi
+    done
+    return 1
+}
+
+# block_is_netdevice <maj:min>
+# Check whether $1 is a net device
+block_is_netdevice() {
+    block_is_nbd "$1" || block_is_iscsi "$1" || block_is_fcoe "$1"
+}
+
+# convert the driver name given by udevadm to the corresponding kernel module name
+get_module_name() {
+    local dev_driver
+    while read -r dev_driver; do
+        case "$dev_driver" in
+            mmcblk)
+                echo "mmc_block"
+                ;;
+            *)
+                echo "$dev_driver"
+                ;;
+        esac
+    done
+}
+
+# get the corresponding kernel modules of a /sys/class/*/* or/dev/* device
+get_dev_module() {
+    local dev_attr_walk
+    local dev_drivers
+    local dev_paths
+    dev_attr_walk=$(udevadm info -a "$1")
+    dev_drivers=$(echo "$dev_attr_walk" \
+        | sed -n 's/\s*DRIVERS=="\(\S\+\)"/\1/p' \
+        | get_module_name)
+
+    # also return modalias info from sysfs paths parsed by udevadm
+    dev_paths=$(echo "$dev_attr_walk" | sed -n 's/.*\(\/devices\/.*\)'\'':/\1/p')
+    local dev_path
+    for dev_path in $dev_paths; do
+        local modalias_file="/sys$dev_path/modalias"
+        if [ -e "$modalias_file" ]; then
+            dev_drivers="$(printf "%s\n%s" "$dev_drivers" "$(cat "$modalias_file")")"
+        fi
+    done
+
+    # if no kernel modules found and device is in a virtual subsystem, follow symlinks
+    if [[ -z $dev_drivers && $(udevadm info -q path "$1") == "/devices/virtual"* ]]; then
+        local dev_vkernel
+        local dev_vsubsystem
+        local dev_vpath
+        dev_vkernel=$(echo "$dev_attr_walk" | sed -n 's/\s*KERNELS=="\(\S\+\)"/\1/p' | tail -1)
+        dev_vsubsystem=$(echo "$dev_attr_walk" | sed -n 's/\s*SUBSYSTEMS=="\(\S\+\)"/\1/p' | tail -1)
+        dev_vpath="/sys/devices/virtual/$dev_vsubsystem/$dev_vkernel"
+        if [[ -n $dev_vkernel && -n $dev_vsubsystem && -d $dev_vpath ]]; then
+            local dev_links
+            local dev_link
+            dev_links=$(find "$dev_vpath" -maxdepth 1 -type l ! -name "subsystem" -exec readlink {} \;)
+            for dev_link in $dev_links; do
+                [[ -n $dev_drivers && ${dev_drivers: -1} != $'\n' ]] && dev_drivers+=$'\n'
+                dev_drivers+=$(udevadm info -a "$dev_vpath/$dev_link" \
+                    | sed -n 's/\s*DRIVERS=="\(\S\+\)"/\1/p' \
+                    | get_module_name \
+                    | grep -v -e pcieport)
+            done
+        fi
+    fi
+    echo "$dev_drivers"
+}
+
+# Check if file is in PE format
+pe_file_format() {
+    if [[ $# -eq 1 ]]; then
+        local magic
+        magic=$(objdump -p "$1" \
+            | gawk '{if ($1 == "Magic"){print strtonum("0x"$2)}}')
+        magic=$(printf "0x%x" "$magic")
+        # 0x10b (PE32), 0x20b (PE32+)
+        [[ $magic == 0x20b || $magic == 0x10b ]] && return 0
+    fi
+    return 1
+}
+
+# Get specific data from the PE header
+pe_get_header_data() {
+    local data_header
+    [[ $# -ne "2" ]] && return 1
+    [[ $(pe_file_format "$1") -eq 1 ]] && return 1
+    data_header=$(objdump -p "$1" \
+        | awk -v data="$2" '{if ($1 == data){print $2}}')
+    echo "$data_header"
+}
+
+# Get the SectionAlignment data from the PE header
+pe_get_section_align() {
+    local align_hex
+    [[ $# -ne "1" ]] && return 1
+    align_hex=$(pe_get_header_data "$1" "SectionAlignment")
+    [[ $? -eq 1 ]] && return 1
+    echo "$((16#$align_hex))"
+}
+
+# Get the ImageBase data from the PE header
+pe_get_image_base() {
+    local base_image
+    [[ $# -ne "1" ]] && return 1
+    base_image=$(pe_get_header_data "$1" "ImageBase")
+    [[ $? -eq 1 ]] && return 1
+    echo "$((16#$base_image))"
+}