MINI MINI MANI MO

#!/bin/sh
# -*- mode: shell-script; indent-tabs-mode: nil; sh-basic-offset: 4; -*-
# ex: ts=8 sw=4 sts=4 et filetype=sh

type getarg >/dev/null 2>&1 || . /lib/dracut-lib.sh

generator_wait_for_dev()
{
    local _name
    local _timeout

    _name="$(str_replace "$1" '/' '\x2f')"

    [ -e "$hookdir/initqueue/finished/devexists-${_name}.sh" ] && return 0

    printf '[ -e "%s" ]\n' $1 \
        >> "$hookdir/initqueue/finished/devexists-${_name}.sh"
    {
        printf '[ -e "%s" ] || ' $1
        printf 'warn "\"%s\" does not exist"\n' $1
    } >> "$hookdir/emergency/80-${_name}.sh"

    _name=$(dev_unit_name "$1")
    if ! [ -L /run/systemd/generator/initrd.target.wants/${_name}.device ]; then
        [ -d /run/systemd/generator/initrd.target.wants ] || mkdir -p /run/systemd/generator/initrd.target.wants
        ln -s ../${_name}.device /run/systemd/generator/initrd.target.wants/${_name}.device
    fi

    if ! [ -f /run/systemd/generator/${_name}.device.d/timeout.conf ]; then
        _timeout=$(getarg rd.device.timeout || printf "0")
        mkdir -p /run/systemd/generator/${_name}.device.d
        {
            echo "[Unit]"
            echo "JobTimeoutSec=$_timeout"
        } > /run/systemd/generator/${_name}.device.d/timeout.conf
    fi
}

root=$(getarg root=)
case "$root" in
    block:LABEL=*|LABEL=*)
        root="${root#block:}"
        root="$(echo $root | sed 's,/,\\x2f,g')"
        root="block:/dev/disk/by-label/${root#LABEL=}"
        rootok=1 ;;
    block:UUID=*|UUID=*)
        root="${root#block:}"
        root="block:/dev/disk/by-uuid/${root#UUID=}"
        rootok=1 ;;
    block:PARTUUID=*|PARTUUID=*)
        root="${root#block:}"
        root="block:/dev/disk/by-partuuid/${root#PARTUUID=}"
        rootok=1 ;;
    block:PARTLABEL=*|PARTLABEL=*)
        root="${root#block:}"
        root="block:/dev/disk/by-partlabel/${root#PARTLABEL=}"
        rootok=1 ;;
    /dev/nfs) # ignore legacy /dev/nfs
        ;;
    /dev/*)
        root="block:${root}"
        rootok=1 ;;
esac

[ "${root%%:*}" = "block" ] && generator_wait_for_dev "${root#block:}"

exit 0