lubs

   1 #!/usr/bin/env bash
   2 # SPDX-License-Identifier: GPL-3.0
   3 #
   4 # mk-linux419
   5 # Twitter: @fascoder_4
   6 # Email  : m.k419sabuaka@gmail.com
   7 #
   8 # Yamada Hayao
   9 # Twitter: @Hayao0819
  10 # Email  : hayao@fascode.net
  11 #
  12 # (c) 2019-2020 Fascode Network.
  13 #
  14 # lubs
  15 #
  16
  17 set -e
  18 # set -u
  19
  20 export LANG=C
  21
  22 script_path=$(readlink -f "${0%/*}")
  23
  24 cache_dir="${script_path}/cache"
  25 channels_dir="${script_path}/channels"
  26 nfb_dir="${script_path}/nfb"
  27
  28 codename="focal"
  29 mirror="http://linux.yz.yamagata-u.ac.jp/ubuntu/"
  30 os_name="Ubuntu"
  31 iso_name="ubuntu"
  32
  33 arch=amd64
  34 work_dir="${script_path}/work"
  35 out_dir="${script_path}/out"
  36 iso_label="${os_name}_${codename}_${arch}"
  37 iso_publisher='Fascode Network <https://fascode.net>'
  38 iso_application="${os_name} Live/Rescue CD"
  39 iso_version="${codename}-$(date +%Y.%m.%d)"
  40 iso_filename="${iso_name}-${iso_version}-${arch}.iso"
  41
  42 channel_name="serene"
  43
  44 username="liveuser"
  45 usershell="/bin/bash"
  46
  47 debug=false
  48 cache_only=false
  49
  50
  51 start_time="$(date +%s)"
  52
  53 _msg_common() {
  54     if [[ "${debug}" = true ]]; then
  55         local _current_time
  56         local _time
  57         _current_time="$(date +%s)"
  58         _time="$(("${_current_time}"-"${start_time}"))"
  59
  60         if [[ "${_time}" -ge 3600 ]]; then
  61             echo "[$(date -d @${_time} +%H:%M.%S)]$("${script_path}/echo_color" -t 6 "[LUBS Core]")"
  62         elif [[ "${_time}" -ge 60 ]]; then
  63             echo "[00:$(date -d @${_time} +%M.%S)]$("${script_path}/echo_color" -t 6 "[LUBS Core]")"
  64         else
  65             echo "[00:00.$(date -d @${_time} +%S)] $("${script_path}/echo_color" -t 6 "[LUBS Core]")"
  66         fi
  67     else
  68         "${script_path}/echo_color" -t 6 "[LUBS Core]"
  69     fi
  70 }
  71
  72 # Show an INFO message
  73 # _msg_info <message>
  74 _msg_info() {
  75     local _msg
  76     _msg="${@}"
  77     echo "$(_msg_common)  $("${script_path}/echo_color" -t 2 "Info:") ${_msg}"
  78 }
  79
  80 # Show an debug message
  81 # _msg_debug <message>
  82 _msg_debug() {
  83     if [[ "${debug}" = true ]]; then
  84         local _msg
  85         _msg="${@}"
  86         echo "$(_msg_common)  $("${script_path}/echo_color" -t 3 "Debug:") ${_msg}"
  87     fi
  88 }
  89
  90 # Show an ERROR message then exit with status
  91 # _msg_error <message> <exit code>
  92 _msg_error() {
  93     local _msg
  94     local _error
  95     _msg="${1}"
  96     _error=${2}
  97     echo "$(_msg_common)  $("${script_path}/echo_color" -t 1 "Error:") ${_msg}"
  98
  99     if [[ ! ${_error} = 0 ]]; then
 100         exit ${_error}
 101     fi
 102 }
 103
 104 # Unmount chroot dir
 105 umount_chroot () {
 106     local mount
 107
 108     for mount in $(mount | awk '{print $3}' | grep "$(realpath "${work_dir}")" | sort -r); do
 109         _msg_info "Unmounting ${mount}"
 110         umount -fl "${mount}"
 111     done
 112 }
 113
 114 # Helper function to run make_*() only one time.
 115 run_once() {
 116     local name
 117     umount_chroot
 118     name="$1"
 119
 120     if [[ ! -e "${work_dir}/build.${name}" ]]; then
 121         _msg_info "$(echo $name | sed "s@_@ @g") is starting."
 122         "${1}"
 123         _msg_info "$(echo $name | sed "s@_@ @g") was done!"
 124         touch "${work_dir}/build.${name}"
 125     fi
 126 }
 127
 128 run_cmd() {
 129     local mount
 130
 131     for mount in "dev" "dev/pts" "proc" "sys" "run/systemd/resolve/stub-resolv.conf"; do
 132         if [[ "${mount}" == "run/systemd/resolve/stub-resolv.conf" ]]; then
 133             mount --bind /etc/resolv.conf "${work_dir}/airootfs/${mount}"
 134         else
 135             mount --bind /${mount} "${work_dir}/airootfs/${mount}"
 136         fi
 137     done
 138
 139     chroot "${work_dir}/airootfs" "${@}"
 140
 141     for mount in $(mount | awk '{print $3}' | grep "$(realpath "${work_dir}")" | sort -r); do
 142         umount -fl "${mount}"
 143     done
 144 }
 145
 146 _apt_install() {
 147     run_cmd apt-get --no-install-recommends --yes install ${@}
 148 }
 149
 150 # rm helper
 151 # Delete the file if it exists.
 152 # For directories, rm -rf is used.
 153 # If the file does not exist, skip it.
 154 # remove <file> <file> ...
 155 remove() {
 156     local _list
 157     local _file
 158     _list=($(echo "$@"))
 159
 160     for _file in "${_list[@]}"; do
 161         _msg_debug "Removeing ${_file}"
 162
 163         if [[ -f ${_file} ]]; then
 164             rm -f "${_file}"
 165         elif [[ -d ${_file} ]]; then
 166             rm -rf "${_file}"
 167         fi
 168     done
 169 }
 170
 171 # Show help
 172 _usage () {
 173     echo "usage ${0} [options] [channel]"
 174     echo
 175     echo " General options:"
 176     echo
 177     echo "    -a | --arch <str>      Set architecture"
 178     echo "                           Default: ${arch}"
 179     echo "    -c | --codename <str>  Set ubuntu codename"
 180     echo "                           Default: ${codename}"
 181     echo "    -m | --mirror <url>    Set apt mirror server."
 182     echo "                           Default: ${mirror}"
 183     echo "    -o | --out <out_dir>   Set the output directory"
 184     echo "                           Default: ${out_dir}"
 185     echo "    -w | --work <work_dir> Set the working directory"
 186     echo "                           Default: ${work_dir}"
 187     echo
 188     echo "    -d | --debug           "
 189     echo "    -h | --help            This help message and exit"
 190     echo
 191     echo "You can switch between installed packages, files included in images, etc. by channel."
 192     echo
 193     echo " Channel:"
 194
 195     local _channel
 196     local channel_list
 197     local description
 198
 199     for _channel in $(ls -l "${channels_dir}" | awk '$1 ~ /d/ {print $9 }'); do
 200         if [[ -n $(ls "${channels_dir}/${_channel}") ]] && [[ ! "${_channel}" = "share" ]]; then
 201             channel_list+=( "${_channel}" )
 202         fi
 203     done
 204
 205     for _channel in ${channel_list[@]}; do
 206         if [[ -f "${channels_dir}/${_channel}/description.txt" ]]; then
 207             description=$(cat "${channels_dir}/${_channel}/description.txt")
 208         else
 209             description="This channel does not have a description.txt."
 210         fi
 211
 212         echo -ne "    ${_channel}"
 213
 214         for i in $( seq 1 $(( 23 - ${#_channel} )) ); do
 215             echo -ne " "
 216         done
 217
 218         echo -ne "${description}\n"
 219     done
 220 }
 221
 222
 223 prepare_build() {
 224     if [[ ${EUID} -ne 0 ]]; then
 225         _msg_error "This script must be run as root." 1
 226     fi
 227
 228     [[ ! -d "${work_dir}" ]] && mkdir -p "${work_dir}"
 229     [[ ! -d "${out_dir}" ]] && mkdir -p "${out_dir}"
 230     umount_chroot
 231
 232     # Check codename
 233     if [[ -z $(grep -h -v ^'#' ${channels_dir}/${channel_name}/codename.${arch} | grep -x ${codename}) ]]; then
 234         _msg_error "This codename (${channel_name}) is not supported on this channel (${codename})."
 235     fi
 236
 237 }
 238
 239
 240 make_basefs() {
 241     local debootstrap_status
 242     statusfile="${cache_dir}/${codename}/status"
 243
 244     debootstrap_status() {
 245         if [[ ! -d "$(dirname ${statusfile})" ]]; then
 246             mkdir -p "$(dirname ${statusfile})"
 247         fi
 248         echo "${1}" > "${statusfile}"
 249     }
 250
 251     if [[ -f "${statusfile}" ]] && [[ $(cat "${statusfile}" 2> /dev/null) = "Done" ]]; then
 252         _msg_info "${codename} cache is found."
 253     else
 254         remove "${cache_dir}/${codename}"
 255         debootstrap_status "Running"
 256         _msg_info "Installing Ubuntu to '${cache_dir}/${codename}/airootfs'..."
 257         mkdir -p "${cache_dir}/${codename}/airootfs"
 258         debootstrap --arch="${arch}" --verbose --merged-usr "${codename}" "${cache_dir}/${codename}/airootfs" "${mirror}"
 259         _msg_info "${codename} installed successfully!"
 260         debootstrap_status "Done"
 261     fi
 262
 263     if [[ "${cache_only}" = true ]]; then
 264         exit 0
 265     fi
 266
 267     rm -rf "${work_dir}/airootfs" && mkdir -p "${work_dir}/airootfs"
 268     _msg_info "copy base files from '${cache_dir}/${codename}/airootfs' to '${work_dir}/airootfs'..."
 269     rsync  -au "${cache_dir}/${codename}/airootfs/" "${work_dir}/airootfs"
 270     echo 'PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:${PATH}' >> "${work_dir}/airootfs/etc/bash.bashrc"
 271     run_cmd apt-get update
 272     # run_cmd apt-get upgrade
 273 }
 274
 275 make_sourcelist() {
 276     cp ${script_path}/source.list.d/${codename}/* ${work_dir}/airootfs/etc/apt
 277     sed -i "s@http://archive.ubuntu.com/ubuntu/@${mirror}@g"  ${work_dir}/airootfs/etc/apt/sources.list
 278     run_cmd apt-get update
 279
 280     if [[ -n $(find ${channels_dir}/*/repo -type f) ]]; then
 281         _apt_install gnupg
 282
 283         for repo in $(find ${channels_dir}/*/repo -name '*.list'); do
 284             key="$(dirname ${repo})/$(basename ${repo} | sed "s/list/key/")"
 285
 286             if [[ -f "${key}" ]]; then
 287                 if file ${key} | grep -q "PGP/GPG key"; then
 288                     cp "${key}" "${work_dir}/airootfs/$(basename ${key})"
 289                 else
 290                     wget -q -O "${work_dir}/airootfs/$(basename ${key})" "$(cat ${key})"
 291                 fi
 292
 293                 run_cmd apt-key add "$(basename ${key})"
 294                 rm "${work_dir}/airootfs/$(basename ${key})"
 295                 cp "${repo}" "${work_dir}/airootfs/etc/apt/sources.list.d"
 296             fi
 297         done
 298         run_cmd apt-get update
 299     fi
 300
 301     # PPA
 302     local PPA_FILELIST
 303     local _PPA_FILE
 304     local _ppa
 305     PPA_FILELIST=("${channels_dir}/share/ppa_list.${arch}" "${channels_dir}/${channel_name}/ppa_list.${arch}")
 306     _apt_install software-properties-common
 307
 308     for _PPA_FILE in ${PPA_FILELIST[@]}; do
 309         if [[ -f "${_PPA_FILE}" ]]; then
 310             for _ppa in $(grep -h -v ^'#' ${_PPA_FILE}); do
 311                 run_cmd add-apt-repository --yes "${_ppa}"
 312             done
 313         fi
 314     done
 315 }
 316
 317 make_systemd() {
 318     _apt_install systemd-sysv
 319     run_cmd dbus-uuidgen --ensure=/etc/machine-id
 320     run_cmd ln -sf /etc/machine-id /var/lib/dbus/machine-id
 321 }
 322
 323 make_apt_packages() {
 324     remove "${work_dir}/airootfs/aptpkglist"
 325     _apt_install initramfs-tools
 326     run_cmd env -i bash -c 'DEBIAN_FRONTEND=noninteractive apt-get dist-upgrade --yes'
 327
 328     if [[ -f "${channels_dir}/share/packages.${arch}" ]]; then
 329         grep -h -v ^'#' "${channels_dir}/share/packages.${arch}" | grep -v "^$" >> "${work_dir}/airootfs/aptpkglist"
 330     fi
 331
 332     if [[ -f "${channels_dir}/${channel_name}/packages.${arch}" ]]; then
 333         grep -h -v ^'#' "${channels_dir}/${channel_name}/packages.${arch}" | grep -v "^$" >> "${work_dir}/airootfs/aptpkglist"
 334     fi
 335
 336     if [[ -s "${work_dir}/airootfs/aptpkglist" ]]; then
 337         run_cmd env -i bash -c 'DEBIAN_FRONTEND=noninteractive apt-get --no-install-recommends --yes install $(echo $(<aptpkglist))'
 338     fi
 339
 340     remove "${work_dir}/airootfs/aptpkglist"
 341 }
 342
 343 make_config() {
 344     # Locales
 345     run_cmd env -i bash -c 'DEBIAN_FRONTEND=noninteractive LANG=en_US.UTF-8 LC_ALL=C LANGUAGE=en_US.UTF-8 dpkg-reconfigure locales'
 346
 347     # resolvconf
 348     run_cmd env -i bash -c 'DEBIAN_FRONTEND=noninteractive dpkg-reconfigure resolvconf'
 349
 350     # NetworkManager
 351     cp ${channels_dir}/share/airootfs/etc/NetworkManager/NetworkManager.conf ${work_dir}/airootfs/etc/NetworkManager/NetworkManager.conf
 352
 353     # Timezone
 354     #run_cmd echo -ne "UTC" > '/etc/timezone'
 355     #run_cmd dpkg-reconfigure -f noninteractive tzdata
 356
 357     run_cmd env -i bash -c 'DEBIAN_FRONTEND=noninteractive dpkg-reconfigure network-manager'
 358     run_cmd truncate -s 0 /etc/machine-id
 359 }
 360
 361 make_add_user() {
 362     sed "s|%USERNAME%|${username}|g;s|%OS_NAME%|${os_name}|g" "${nfb_dir}/casper.conf" > "${work_dir}/airootfs/etc/casper.conf"
 363     chmod 755 "${work_dir}"/airootfs/usr/share/initramfs-tools/scripts/casper-bottom/*adduser "${work_dir}"/airootfs/usr/share/initramfs-tools/scripts/casper-bottom/*autologin
 364     run_cmd env -i bash -c 'mkinitramfs -o /boot/initrd.img-`uname -r` `uname -r`'
 365 }
 366
 367 make_clean() {
 368     sed -i "s@${mirror}@http://archive.ubuntu.com/ubuntu/@g"  ${work_dir}/airootfs/etc/apt/sources.list
 369     run_cmd apt-get update
 370     run_cmd apt-get clean
 371     run_cmd apt-get --yes autoremove
 372     run_cmd rm -rf "/tmp/* ~/.bash_history"
 373 }
 374
 375 make_squashfs() {
 376     # prepare
 377     [[ -d "${bootfiles_dir}" ]] && rm -r "${bootfiles_dir}"
 378     mkdir -p "${bootfiles_dir}"/{casper,isolinux,install}
 379
 380     # make squashfs
 381     mksquashfs "${work_dir}/airootfs" "${bootfiles_dir}/casper/filesystem.squashfs"
 382 }
 383
 384 make_nfb() {
 385     # prepare
 386     touch "${bootfiles_dir}/ubuntu"
 387     sed "s|%OS_NAME%|${os_name}|g" "${nfb_dir}/README.diskdefines" > "${bootfiles_dir}/README.diskdefines"
 388
 389     # casper setup
 390     cp "${work_dir}/airootfs/boot/vmlinuz" "${bootfiles_dir}/casper/vmlinuz"
 391     cp "${work_dir}/airootfs/boot/initrd.img" "${bootfiles_dir}/casper/initrd"
 392     run_cmd dpkg-query -W --showformat='${Package} ${Version}\n' > ${bootfiles_dir}/casper/filesystem.manifest
 393     cp -v "${bootfiles_dir}/casper/filesystem.manifest" "${bootfiles_dir}/casper/filesystem.manifest-desktop"
 394     sed -i '/casper/d;/discover/d;/laptop-detect/d;/os-prober/d;/ubiquity/d' "${bootfiles_dir}/casper/filesystem.manifest-desktop"
 395     printf $(du -sx --block-size=1 "${work_dir}/airootfs" | cut -f1) > "${bootfiles_dir}/casper/filesystem.size"
 396
 397     # isolinux setup
 398     cp "${work_dir}"/airootfs/usr/lib/syslinux/modules/bios/*.c32 "${bootfiles_dir}/isolinux/"
 399     cp "${work_dir}/airootfs/usr/lib/ISOLINUX/isolinux.bin" "${bootfiles_dir}/isolinux/"
 400     cp "${work_dir}/airootfs/usr/lib/ISOLINUX/isohdpfx.bin" "${bootfiles_dir}/isolinux/"
 401     sed "s|%OS_NAME%|${os_name}|g" "${nfb_dir}/grub.cfg" > "${bootfiles_dir}/isolinux/grub.cfg"
 402     sed "s|%OS_NAME%|${os_name}|g" "${nfb_dir}/isolinux.cfg" > "${bootfiles_dir}/isolinux/isolinux.cfg"
 403
 404     # memtest86+ setup
 405     _apt_install memtest86+
 406     cp "${work_dir}/airootfs/boot/memtest86+.bin" "${bootfiles_dir}/install/memtest86+"
 407
 408     # memtest86 setup
 409     if [[ ! -f "${cache_dir}/memtest86-usb.zip" ]]; then
 410         wget -O "${cache_dir}/memtest86-usb.zip" "https://www.memtest86.com/downloads/memtest86-usb.zip"
 411         bash -c "(unzip -p ${cache_dir}/memtest86-usb.zip memtest86-usb.img > ${cache_dir}/memtest86)"
 412     fi
 413
 414     cp "${cache_dir}/memtest86" "${bootfiles_dir}/install/memtest86"
 415 }
 416
 417 make_efi() {
 418     # UEFI 32bit (ia32)
 419     grub-mkstandalone \
 420         --format=i386-efi \
 421         --output="${bootfiles_dir}/isolinux/bootia32.efi" \
 422         --locales="" \
 423         --fonts="" \
 424         "boot/grub/grub.cfg=${bootfiles_dir}/isolinux/grub.cfg"
 425
 426     # UEFI 64bit (x64)
 427     grub-mkstandalone \
 428         --format=x86_64-efi \
 429         --output="${bootfiles_dir}/isolinux/bootx64.efi" \
 430         --locales="" \
 431         --fonts="" \
 432         "boot/grub/grub.cfg=${bootfiles_dir}/isolinux/grub.cfg"
 433
 434     # create efiboot.img
 435     truncate -s 50M "${bootfiles_dir}/isolinux/efiboot.img"
 436     mkfs.fat -F 16 -f 1 -r 112 "${bootfiles_dir}/isolinux/efiboot.img"
 437     mount "${bootfiles_dir}/isolinux/efiboot.img" "${bootfiles_dir}/mnt"
 438     mkdir -p "${bootfiles_dir}/mnt/efi/boot"
 439     cp "${bootfiles_dir}/isolinux/bootia32.efi" "${bootfiles_dir}/mnt/efi/boot/"
 440     cp "${bootfiles_dir}/isolinux/bootx64.efi" "${bootfiles_dir}/mnt/efi/boot/"
 441     umount -d "${bootfiles_dir}/mnt"
 442     rm -r "${bootfiles_dir}/mnt"
 443 }
 444
 445 make_iso() {
 446     cd "${bootfiles_dir}"
 447
 448     # create checksum (using at booting)
 449     bash -c "(find . -type f -print0 | xargs -0 md5sum | grep -v "\./md5sum.txt" > md5sum.txt)"
 450
 451     # create iso
 452     xorriso \
 453         -as mkisofs \
 454         -iso-level 3 \
 455         -full-iso9660-filenames \
 456         -volid "${iso_label}" \
 457         -appid "${iso_application}" \
 458         -publisher "${iso_publisher}" \
 459         -preparer "prepared by LUBS" \
 460         -eltorito-boot isolinux/isolinux.bin \
 461             -no-emul-boot \
 462             -boot-load-size 4 \
 463             -boot-info-table \
 464         -eltorito-alt-boot \
 465             -eltorito-platform efi \
 466             -eltorito-boot EFI/efiboot.img \
 467             -no-emul-boot \
 468         -isohybrid-mbr "${bootfiles_dir}/isolinux/isohdpfx.bin" \
 469         -isohybrid-gpt-basdat \
 470         -eltorito-catalog isolinux/boot.cat \
 471         -output "${out_dir}/${iso_filename}" \
 472         -graft-points \
 473             "." \
 474             "/isolinux/isolinux.bin=isolinux/isolinux.bin" \
 475             "/EFI/efiboot.img=isolinux/efiboot.img"
 476
 477     cd - > /dev/null
 478 }
 479
 480 make_checksum() {
 481     cd "${out_dir}"
 482     _msg_info "Creating md5 checksum ..."
 483     md5sum "${iso_filename}" > "${iso_filename}.md5"
 484
 485     _msg_info "Creating sha256 checksum ..."
 486     sha256sum "${iso_filename}" > "${iso_filename}.sha256"
 487     cd - > /dev/null 2>&1
 488 }
 489
 490
 491 # 引数解析（）
 492 # 参考記事：https://0e0.pw/ci83 https://0e0.pw/VJlg
 493
 494 _opt_short="w:o:ha:-:m:c:d"
 495 _opt_long="help,arch:,codename:,debug,help,mirror:,out:,work,cache-only"
 496 OPT=$(getopt -o ${_opt_short} -l ${_opt_long} -- "${@}")
 497
 498 if [[ ${?} != 0 ]]; then
 499     exit 1
 500 fi
 501
 502 eval set -- "${OPT}"
 503
 504 while :; do
 505     case ${1} in
 506         -a | --arch)
 507             if [[ -z ${2} ]]; then
 508                 _msg_error "Please specify the architecture."
 509                 exit 1
 510             else
 511                 arch="${2}"
 512             fi
 513             shift 2
 514             ;;
 515         -c | --codename)
 516             if [[ -z ${2} ]]; then
 517                 _msg_error "Please specify the codename."
 518                 exit 1
 519             else
 520                 codename="${2}"
 521             fi
 522             shift 2
 523             ;;
 524         -d | --debug)
 525             debug=true
 526             shift 1
 527             ;;
 528         -h | --help)
 529             _usage
 530             exit 0
 531             ;;
 532         -m | --mirror)
 533             if [[ -z ${2} ]]; then
 534                 _msg_error "Please specify the mirror server."
 535                 exit 1
 536             else
 537                 mirror="${2}"
 538             fi
 539
 540             shift 2
 541             ;;
 542         -o | --out)
 543             if [[ -z ${2} ]]; then
 544                 _msg_error "Please specify the out dir."
 545                 exit 1
 546             else
 547                 out_dir="${2}"
 548             fi
 549
 550             shift 2
 551             ;;
 552         -w | --work)
 553             if [[ -z ${2} ]]; then
 554                 _msg_error "Please specify the out dir."
 555                 exit 1
 556             else
 557                 work_dir="${2}"
 558             fi
 559
 560             shift 2
 561             ;;
 562         --cache-only)
 563             cache_only=true
 564             shift 1
 565             ;;
 566         --)
 567             shift
 568             break
 569             ;;
 570         *)
 571             _msg_error "Invalid argument '${1}'"
 572             _usage 1
 573             ;;
 574     esac
 575 done
 576
 577 bootfiles_dir="${work_dir}/bootfiles"
 578 trap  umount_chroot 0 2 15
 579
 580 if [[ -n "${1}" ]]; then
 581     channel_name="${1}"
 582
 583     check_channel() {
 584         local channel_list
 585         local i
 586         channel_list=()
 587
 588         for _channel in $(ls -l "${channels_dir}" | awk '$1 ~ /d/ {print $9 }'); do
 589             if [[ -n $(ls "${channels_dir}/${_channel}") ]] && [[ ! "${_channel}" = "share" ]]; then
 590                 channel_list+=( "${_channel}" )
 591             fi
 592         done
 593
 594         for i in ${channel_list[@]}; do
 595             if [[ "${i}" = "${channel_name}" ]]; then
 596                 echo -n "true"
 597                 return 0
 598             fi
 599         done
 600
 601         echo -n "false"
 602         return 1
 603     }
 604
 605     if [[ $(check_channel ${channel_name}) = false ]]; then
 606         _msg_error "Invalid channel ${channel_name}"
 607         exit 1
 608     fi
 609 fi
 610
 611
 612 prepare_build
 613 run_once make_basefs
 614 run_once make_sourcelist
 615 run_once make_systemd
 616 run_once make_apt_packages
 617 run_once make_config
 618 run_once make_add_user
 619 run_once make_clean
 620 run_once make_squashfs
 621 run_once make_nfb
 622 run_once make_efi
 623 run_once make_iso
 624 run_once make_checksum