Mini Shell

#!/bin/bash

# called by dracut
check() {
    local _rootdev
    # if we don't have dmraid installed on the host system, no point
    # in trying to support it in the initramfs.
    require_binaries dmraid || return 1

    [[ $hostonly ]] || [[ $mount_needs ]] && {
        for dev in "${!host_fs_types[@]}"; do
            [[ "${host_fs_types[$dev]}" != *_raid_member ]] && continue

            DEVPATH=$(get_devpath_block "$dev")

            for holder in "$DEVPATH"/holders/*; do
                [[ -e "$holder" ]] || continue
                [[ -e "$holder/dm" ]] && return 0
                break
            done

        done
        return 255
    }

    return 0
}

# called by dracut
depends() {
    echo dm rootfs-block
    return 0
}

# called by dracut
cmdline() {
    local _activated
    declare -A _activated

    for dev in "${!host_fs_types[@]}"; do
        local holder DEVPATH DM_NAME majmin
        [[ "${host_fs_types[$dev]}" != *_raid_member ]] && continue

        DEVPATH=$(get_devpath_block "$dev")

        for holder in "$DEVPATH"/holders/*; do
            [[ -e "$holder" ]] || continue
            dev="/dev/${holder##*/}"
            DM_NAME="$(dmsetup info -c --noheadings -o name "$dev" 2>/dev/null)"
            [[ ${DM_NAME} ]] && break
        done

        [[ ${DM_NAME} ]] || continue

        if ! [[ ${_activated[${DM_NAME}]} ]]; then
            printf "%s" " rd.dm.uuid=${DM_NAME}"
            _activated["${DM_NAME}"]=1
        fi
    done
}

# called by dracut
install() {
    local _i

    if [[ $hostonly_cmdline == "yes" ]]; then
        local _raidconf=$(cmdline)
        [[ $_raidconf ]] && printf "%s\n" "$_raidconf" >> "${initdir}/etc/cmdline.d/90dmraid.conf"
    fi

    inst_multiple dmraid
    inst_multiple -o kpartx
    inst $(command -v partx) /sbin/partx

    inst "$moddir/dmraid.sh" /sbin/dmraid_scan

    inst_rules 66-kpartx.rules 67-kpartx-compat.rules

    inst_libdir_file "libdmraid-events*.so*"

    inst_rules "$moddir/61-dmraid-imsm.rules"
    #inst "$moddir/dmraid-cleanup.sh" /sbin/dmraid-cleanup
    inst_hook pre-trigger 30 "$moddir/parse-dm.sh"
}