summaryrefslogtreecommitdiff
path: root/parabolaiso/mkparabolaiso
blob: 11a9a9167c887c127b693af9b5900e3cb4b68f45 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
#!/bin/bash
#
# SPDX-License-Identifier: GPL-3.0-or-later

set -e -u

# Control the environment
umask 0022
export LANG="C"
export SOURCE_DATE_EPOCH="${SOURCE_DATE_EPOCH:-"$(date +%s)"}"

# mkparabolaiso defaults
app_name="${0##*/}"
pkg_list=()
run_cmd=""
quiet="y"
work_dir="work"
out_dir="out"
img_name="${app_name}.iso"
sfs_mode="sfs"
sfs_comp="xz"
gpg_key=""
override_gpg_key=""

# profile defaults
profile=""
iso_name="${app_name}"
iso_label="${app_name^^}"
override_iso_label=""
iso_publisher="${app_name}"
override_iso_publisher=""
iso_application="${app_name} iso"
override_iso_application=""
iso_version=""
install_dir="${app_name}"
override_install_dir=""
arch="${arch:-$(uname -m)}" # leave $(uname -m) only in parabolaiso v49+
pacman_conf="/etc/pacman.conf"
override_pacman_conf=""
bootmodes=()


# Show an INFO message
# $1: message string
_msg_info() {
    local _msg="${1}"
    [[ "${quiet}" == "y" ]] || printf '[%s] INFO: %s\n' "${app_name}" "${_msg}"
}

# Show a WARNING message
# $1: message string
_msg_warning() {
    local _msg="${1}"
    printf '[%s] WARNING: %s\n' "${app_name}" "${_msg}" >&2
}

# Show an ERROR message then exit with status
# $1: message string
# $2: exit code number (with 0 does not exit)
_msg_error() {
    local _msg="${1}"
    local _error=${2}
    printf '[%s] ERROR: %s\n' "${app_name}" "${_msg}" >&2
    if (( _error > 0 )); then
        exit "${_error}"
    fi
}

_chroot_init() {
    install -d -m 0755 -o 0 -g 0 -- "${airootfs_dir}"
    _pacman base syslinux
}

_chroot_run() {
    eval -- arch-chroot "${airootfs_dir}" "${run_cmd}"
}

_mount_airootfs() {
    trap "_umount_airootfs" EXIT HUP INT TERM
    install -d -m 0755 -- "${work_dir}/mnt/airootfs"
    _msg_info "Mounting '${airootfs_dir}.img' on '${work_dir}/mnt/airootfs'..."
    mount -- "${airootfs_dir}.img" "${work_dir}/mnt/airootfs"
    _msg_info "Done!"
}

_umount_airootfs() {
    _msg_info "Unmounting '${work_dir}/mnt/airootfs'..."
    umount -d -- "${work_dir}/mnt/airootfs"
    _msg_info "Done!"
    rmdir -- "${work_dir}/mnt/airootfs"
    trap - EXIT HUP INT TERM
}

# Show help usage, with an exit status.
# $1: exit status number.
_usage() {
    IFS='' read -r -d '' usagetext <<ENDUSAGETEXT || true
usage ${app_name} [options] <profile_dir or legacy_command>
  options:
     -A <application> Set an application name for the ISO
                      Default: '${iso_application}'
     -C <file>        pacman configuration file.
                      Default: '${pacman_conf}'
     -D <install_dir> Set an install_dir. All files will by located here.
                      Default: '${install_dir}'
                      NOTE: Max 8 characters, use only [a-z0-9]
     -L <label>       Set the ISO volume label
                      Default: '${iso_label}'
     -P <publisher>   Set the ISO publisher
                      Default: '${iso_publisher}'
     -c <comp_type>   Set SquashFS compression type (gzip, lzma, lzo, xz, zstd)
                      Default: '${sfs_comp}'
     -g <gpg_key>     Set the GPG key to be used for signing the squashfs image
     -h               This message
     -o <out_dir>     Set the output directory
                      Default: '${out_dir}'
     -p PACKAGE(S)    Package(s) to install, can be used multiple times
     -r <run_cmd>     Set a command to be run in chroot (only relevant for legacy 'run' command)
                      NOTE: Deprecated, will be removed with parabolaiso v49
     -s <sfs_mode>    Set SquashFS image mode (img or sfs)
                      img: prepare airootfs.sfs for dm-snapshot usage
                      sfs: prepare airootfs.sfs for overlayfs usage
                      Default: '${sfs_mode}'
     -v               Enable verbose output
     -w <work_dir>    Set the working directory
                      Default: '${work_dir}'

  profile_dir:        Directory of the parabolaiso profile to build

  legacy_command:     Legacy build.sh command
                      NOTE: Deprecated, will be removed with parabolaiso v49
    init
        initialize a chroot for building
    install
        install packages to the chroot
    run
        run a command in the chroot
    prepare
        cleanup and prepare the airootfs
    pkglist
        create a list of packages installed on the medium
    iso
        create the ISO
ENDUSAGETEXT
    printf '%s' "${usagetext}"
    exit "${1}"
}

# Shows configuration according to command mode.
# $1: build_profile | init | install | run | prepare | iso
_show_config() {
    local _mode="$1" build_date
    build_date="$(date --utc --iso-8601=seconds -d "@${SOURCE_DATE_EPOCH}")"
    _msg_info "${app_name} configuration settings"
    [[ ! -d "${command_name}" ]] && _msg_info "           Legacy Command:   ${command_name}"
    _msg_info "             Architecture:   ${arch}"
    _msg_info "        Working directory:   ${work_dir}"
    _msg_info "   Installation directory:   ${install_dir}"
    case "${_mode}" in
        build_profile)
            _msg_info "               Build date:   ${build_date}"
            _msg_info "         Output directory:   ${out_dir}"
            _msg_info "                  GPG key:   ${gpg_key:-None}"
            _msg_info "                  Profile:   ${profile}"
            _msg_info "Pacman configuration file:   ${pacman_conf}"
            _msg_info "          Image file name:   ${img_name}"
            _msg_info "         ISO volume label:   ${iso_label}"
            _msg_info "            ISO publisher:   ${iso_publisher}"
            _msg_info "          ISO application:   ${iso_application}"
            _msg_info "               Boot modes:   ${bootmodes[*]}"
            _msg_info "                 Packages:   ${pkg_list[*]}"
            if [[ "${arch}" == "dual" ]]; then
                _msg_info "        Packages (x86_64):   ${pkg_list_x86_64[*]:-None}"
                _msg_info "          Packages (i686):   ${pkg_list_i686[*]:-None}"
            fi
            ;;
        init)
            _msg_info "Pacman configuration file:   ${pacman_conf}"
            ;;
        install)
            _msg_info "                  GPG key:   ${gpg_key:-None}"
            _msg_info "Pacman configuration file:   ${pacman_conf}"
            _msg_info "                 Packages:   ${pkg_list[*]}"
            ;;
        run)
            _msg_info "              Run command:   ${run_cmd}"
            ;;
        prepare)
            _msg_info "                  GPG key:   ${gpg_key:-None}"
            ;;
        pkglist)
            ;;
        iso)
            _msg_info "         Output directory:   ${out_dir}"
            _msg_info "          Image file name:   ${img_name}"
            _msg_info "         ISO volume label:   ${iso_label}"
            _msg_info "            ISO publisher:   ${iso_publisher}"
            _msg_info "          ISO application:   ${iso_application}"
            ;;
    esac
    [[ "${quiet}" == "y" ]] || printf '\n'
}

# Install desired packages to airootfs
_pacman() {
    _msg_info "Installing packages to '${airootfs_dir}/'..."

    if [[ "${quiet}" = "y" ]]; then
        pacstrap -C "${work_dir}/pacman_${arch}.conf" -c -G -M -- "${airootfs_dir}" "$@" &> /dev/null
    else
        pacstrap -C "${work_dir}/pacman_${arch}.conf" -c -G -M -- "${airootfs_dir}" "$@"
    fi

    _msg_info "Done! Packages installed successfully."
}

# Cleanup airootfs
_cleanup() {
    _msg_info "Cleaning up what we can on ${arch} airootfs..."

    # Delete all files in /boot
    if [[ -d "${airootfs_dir}/boot" ]]; then
        find "${airootfs_dir}/boot" -mindepth 1 -delete
    fi
    # Delete pacman database sync cache files (*.tar.gz)
    if [[ -d "${airootfs_dir}/var/lib/pacman" ]]; then
        find "${airootfs_dir}/var/lib/pacman" -maxdepth 1 -type f -delete
    fi
    # Delete pacman database sync cache
    if [[ -d "${airootfs_dir}/var/lib/pacman/sync" ]]; then
        find "${airootfs_dir}/var/lib/pacman/sync" -delete
    fi
    # Delete pacman package cache
    if [[ -d "${airootfs_dir}/var/cache/pacman/pkg" ]]; then
        find "${airootfs_dir}/var/cache/pacman/pkg" -type f -delete
    fi
    # Delete all log files, keeps empty dirs.
    if [[ -d "${airootfs_dir}/var/log" ]]; then
        find "${airootfs_dir}/var/log" -type f -delete
    fi
    # Delete all temporary files and dirs
    if [[ -d "${airootfs_dir}/var/tmp" ]]; then
        find "${airootfs_dir}/var/tmp" -mindepth 1 -delete
    fi
    # Delete package pacman related files.
    find "${work_dir}" \( -name '*.pacnew' -o -name '*.pacsave' -o -name '*.pacorig' \) -delete
    # Create an empty /etc/machine-id
    printf '' > "${airootfs_dir}/etc/machine-id"

    _msg_info "Done!"
}

# Makes a ext4 filesystem inside a SquashFS from a source directory.
_mkairootfs_img() {
    if [[ ! -e "${airootfs_dir}" ]]; then
        _msg_error "The path '${airootfs_dir}' does not exist" 1
    fi

    _msg_info "Creating ext4 image of 32 GiB..."
    if [[ "${quiet}" == "y" ]]; then
        mkfs.ext4 -q -O '^has_journal,^resize_inode' -E 'lazy_itable_init=0' -m 0 -F -- "${airootfs_dir}.img" 32G
    else
        mkfs.ext4 -O '^has_journal,^resize_inode' -E 'lazy_itable_init=0' -m 0 -F -- "${airootfs_dir}.img" 32G
    fi
    tune2fs -c 0 -i 0 -- "${airootfs_dir}.img" > /dev/null
    _msg_info "Done!"
    _mount_airootfs
    _msg_info "Copying '${airootfs_dir}/' to '${work_dir}/mnt/airootfs/'..."
    cp -aT -- "${airootfs_dir}/" "${work_dir}/mnt/airootfs/"
    chown -- 0:0 "${work_dir}/mnt/airootfs/"
    _msg_info "Done!"
    _umount_airootfs
    install -d -m 0755 -- "${isofs_dir}/${install_dir}/${arch}"
    _msg_info "Creating SquashFS image, this may take some time..."
    if [[ "${quiet}" = "y" ]]; then
        mksquashfs "${airootfs_dir}.img" "${isofs_dir}/${install_dir}/${arch}/airootfs.sfs" -noappend \
            -comp "${sfs_comp}" -no-progress > /dev/null
    else
        mksquashfs "${airootfs_dir}.img" "${isofs_dir}/${install_dir}/${arch}/airootfs.sfs" -noappend \
            -comp "${sfs_comp}"
    fi
    _msg_info "Done!"
    rm -- "${airootfs_dir}.img"
}

# Makes a SquashFS filesystem from a source directory.
_mkairootfs_sfs() {
    if [[ ! -e "${airootfs_dir}" ]]; then
        _msg_error "The path '${airootfs_dir}' does not exist" 1
    fi

    install -d -m 0755 -- "${isofs_dir}/${install_dir}/${arch}"
    _msg_info "Creating ${arch} SquashFS image, this may take some time..."
    if [[ "${quiet}" = "y" ]]; then
        mksquashfs "${airootfs_dir}" "${isofs_dir}/${install_dir}/${arch}/airootfs.sfs" -noappend \
            -comp "${sfs_comp}" -no-progress > /dev/null
    else
        mksquashfs "${airootfs_dir}" "${isofs_dir}/${install_dir}/${arch}/airootfs.sfs" -noappend \
            -comp "${sfs_comp}"
    fi
    _msg_info "Done!"
}

_mkchecksum() {
    _msg_info "Creating checksum file for self-test..."
    cd -- "${isofs_dir}/${install_dir}/${arch}"
    sha512sum airootfs.sfs > airootfs.sha512
    cd -- "${OLDPWD}"
    _msg_info "Done!"
}

_mksignature() {
    _msg_info "Signing SquashFS image..."
    cd -- "${isofs_dir}/${install_dir}/${arch}"
    gpg --detach-sign --default-key "${gpg_key}" airootfs.sfs
    cd -- "${OLDPWD}"
    _msg_info "Done!"
}

# Helper function to run functions only one time.
_run_once() {
    if [[ ! -e "${work_dir}/build.${1}_${arch}" ]]; then
        "$1"
        touch "${work_dir}/build.${1}_${arch}"
    fi
}

# Helper function to run functions for both architectures
_run_dual() {
    local cmd
    if [[ "${arch}" == "dual" ]]; then
        local arch
        for arch in i686 x86_64; do
            airootfs_dir="${work_dir}/${arch}/airootfs"
            for cmd in "$@"; do
                ${cmd}
            done
        done
    else
        for cmd in "$@"; do
            ${cmd}
        done
    fi
}

# Set up custom pacman.conf with custom cache and pacman hook directories
_make_pacman_conf() {
    local _cache_dirs _system_cache_dirs _profile_cache_dirs
    _system_cache_dirs="$(pacman-conf CacheDir| tr '\n' ' ')"
    _profile_cache_dirs="$(pacman-conf --config "${pacman_conf}" CacheDir| tr '\n' ' ')"

    # only use the profile's CacheDir, if it is not the default and not the same as the system cache dir
    if [[ "${_profile_cache_dirs}" != "/var/cache/pacman/pkg" ]] && \
        [[ "${_system_cache_dirs}" != "${_profile_cache_dirs}" ]]; then
        _cache_dirs="${_profile_cache_dirs}"
    else
        _cache_dirs="${_system_cache_dirs}"
    fi

    _msg_info "Copying custom pacman.conf to work directory..."
    # take the profile pacman.conf and strip all settings that would break in chroot when using pacman -r
    # see `man 8 pacman` for further info
    setarch "${arch}" pacman-conf --config "${pacman_conf}" | \
        sed '/CacheDir/d;/DBPath/d;/HookDir/d;/LogFile/d;/RootDir/d' > "${work_dir}/pacman_${arch}.conf"

    _msg_info "Using pacman CacheDir: ${_cache_dirs}"
    # append CacheDir and HookDir to [options] section
    # HookDir is *always* set to the airootfs' override directory
    sed "/\[options\]/a CacheDir = ${_cache_dirs}
        /\[options\]/a HookDir = ${airootfs_dir}/etc/pacman.d/hooks/" \
        -i "${work_dir}/pacman_${arch}.conf"
}

# Prepare working directory and copy custom airootfs files (airootfs)
_make_custom_airootfs() {
    local passwd=()

    install -d -m 0755 -o 0 -g 0 -- "${airootfs_dir}"

    if [[ -d "${profile}/airootfs" ]]; then
        _msg_info "Copying custom airootfs files and setting up user home directories..."
        cp -af --no-preserve=ownership -- "${profile}/airootfs/." "${airootfs_dir}"

        [[ -e "${airootfs_dir}/etc/shadow" ]] && chmod -f 0400 -- "${airootfs_dir}/etc/shadow"
        [[ -e "${airootfs_dir}/etc/gshadow" ]] && chmod -f 0400 -- "${airootfs_dir}/etc/gshadow"

        # Set up user home directories and permissions
        if [[ -e "${airootfs_dir}/etc/passwd" ]]; then
            while IFS=':' read -a passwd -r; do
                [[ "${passwd[5]}" == '/' ]] && continue
                [[ -z "${passwd[5]}" ]] && continue

                if [[ -d "${airootfs_dir}${passwd[5]}" ]]; then
                    chown -hR -- "${passwd[2]}:${passwd[3]}" "${airootfs_dir}${passwd[5]}"
                    chmod -f 0750 -- "${airootfs_dir}${passwd[5]}"
                else
                    install -d -m 0750 -o "${passwd[2]}" -g "${passwd[3]}" -- "${airootfs_dir}${passwd[5]}"
                fi
             done < "${airootfs_dir}/etc/passwd"
        fi
        _msg_info "Done!"
    fi
}

# Packages (airootfs)
_make_packages() {
    if [[ -n "${gpg_key}" ]]; then
        exec {PARABOLAISO_GNUPG_FD}<>"${work_dir}/pubkey.gpg"
        export PARABOLAISO_GNUPG_FD
    fi
    local pkg_list_arch
    eval "pkg_list_arch=(\${pkg_list_${arch}[@]})"
    _pacman "${pkg_list[@]}" "${pkg_list_arch[@]}"
    if [[ -n "${gpg_key}" ]]; then
        exec {PARABOLAISO_GNUPG_FD}<&-
        unset PARABOLAISO_GNUPG_FD
    fi
}

# Customize installation (airootfs)
_make_customize_airootfs() {
    local passwd=()

    if [[ -e "${profile}/airootfs/etc/passwd" ]]; then
        _msg_info "Copying /etc/skel/* to user homes..."
        while IFS=':' read -a passwd -r; do
            (( passwd[2] >= 1000 && passwd[2] < 60000 )) || continue
            [[ "${passwd[5]}" == '/' ]] && continue
            [[ -z "${passwd[5]}" ]] && continue
            cp -dnRT --preserve=mode,timestamps,links -- "${airootfs_dir}/etc/skel" "${airootfs_dir}${passwd[5]}"
            chmod -f 0750 -- "${airootfs_dir}${passwd[5]}"
            chown -hR -- "${passwd[2]}:${passwd[3]}" "${airootfs_dir}${passwd[5]}"

        done < "${profile}/airootfs/etc/passwd"
        _msg_info "Done!"
    fi

    if [[ -e "${airootfs_dir}/root/customize_airootfs.sh" ]]; then
        _msg_info "Running customize_airootfs.sh in '${airootfs_dir}' chroot..."
        _msg_warning "customize_airootfs.sh is deprecated! Support for it will be removed in a future parabolaiso version."
        local run_cmd="/root/customize_airootfs.sh"
        _chroot_run
        rm -- "${airootfs_dir}/root/customize_airootfs.sh"
        _msg_info "Done! customize_airootfs.sh run successfully."
    fi
}

# Set up boot loaders
_make_bootmodes() {
    local bootmode
    for bootmode in "${bootmodes[@]}"; do
        if typeset -f "_make_boot_${bootmode}" &> /dev/null; then
            _run_once "_make_boot_${bootmode}"
        else
            _msg_error "${bootmode} is not a valid boot mode" 1
        fi
    done
}

# Prepare kernel/initramfs ${install_dir}/boot/
_make_boot_on_iso() {
    _msg_info "Preparing ${arch} kernel and initramfs for the ISO 9660 file system..."
    install -d -m 0755 -- "${isofs_dir}/${install_dir}/boot/${arch}"
    install -m 0644 -- "${airootfs_dir}/boot/initramfs-"*".img" "${isofs_dir}/${install_dir}/boot/${arch}/"
    install -m 0644 -- "${airootfs_dir}/boot/vmlinuz-"* "${isofs_dir}/${install_dir}/boot/${arch}/"
    _msg_info "Done!"
}

# Prepare /${install_dir}/boot/syslinux
_make_boot_bios.syslinux.mbr() {
    _msg_info "Setting up SYSLINUX for BIOS booting from a disk..."
    install -d -m 0755 -- "${isofs_dir}/${install_dir}/boot/syslinux"
    for _cfg in "${profile}/syslinux/"*.cfg; do
        sed "s|%PARABOLAISO_LABEL%|${iso_label}|g;
             s|%INSTALL_DIR%|${install_dir}|g;
             s|%ARCH%|${arch}|g" \
             "${_cfg}" > "${isofs_dir}/${install_dir}/boot/syslinux/${_cfg##*/}"
    done
    if [[ -e "${profile}/syslinux/splash.png" ]]; then
        install -m 0644 -- "${profile}/syslinux/splash.png" "${isofs_dir}/${install_dir}/boot/syslinux/"
    fi
    install -m 0644 -- "${airootfs_dir}/usr/lib/syslinux/bios/"*.c32 "${isofs_dir}/${install_dir}/boot/syslinux/"
    install -m 0644 -- "${airootfs_dir}/usr/lib/syslinux/bios/lpxelinux.0" "${isofs_dir}/${install_dir}/boot/syslinux/"
    install -m 0644 -- "${airootfs_dir}/usr/lib/syslinux/bios/memdisk" "${isofs_dir}/${install_dir}/boot/syslinux/"

    _run_dual '_run_once _make_boot_on_iso'

    if [[ -e "${isofs_dir}/${install_dir}/boot/syslinux/hdt.c32" ]]; then
        install -d -m 0755 -- "${isofs_dir}/${install_dir}/boot/syslinux/hdt"
        if [[ -e "${airootfs_dir}/usr/share/hwdata/pci.ids" ]]; then
            gzip -c -9 "${airootfs_dir}/usr/share/hwdata/pci.ids" > \
                "${isofs_dir}/${install_dir}/boot/syslinux/hdt/pciids.gz"
        fi
        find "${airootfs_dir}/usr/lib/modules" -name 'modules.alias' -print -exec gzip -c -9 '{}' ';' -quit > \
            "${isofs_dir}/${install_dir}/boot/syslinux/hdt/modalias.gz"
    fi

    # Add other aditional/extra files to ${install_dir}/boot/
    if [[ -e "${airootfs_dir}/boot/memtest86+/memtest.bin" ]]; then
        # rename for PXE: https://wiki.parabola.nu/index.php/Syslinux#Using_memtest
        install -m 0644 -- "${airootfs_dir}/boot/memtest86+/memtest.bin" "${isofs_dir}/${install_dir}/boot/memtest"
        install -d -m 0755 -- "${isofs_dir}/${install_dir}/boot/licenses/memtest86+/"
        install -m 0644 -- "${airootfs_dir}/usr/share/licenses/common/GPL2/license.txt" \
            "${isofs_dir}/${install_dir}/boot/licenses/memtest86+/"
    fi
    _msg_info "Done! SYSLINUX set up for BIOS booting from a disk successfully."
}

# Prepare /isolinux
_make_boot_bios.syslinux.eltorito() {
    _msg_info "Setting up SYSLINUX for BIOS booting from an optical disc..."
    install -d -m 0755 -- "${isofs_dir}/isolinux"
    for _cfg in "${profile}/isolinux/"*".cfg"; do
        sed "s|%PARABOLAISO_LABEL%|${iso_label}|g;
             s|%INSTALL_DIR%|${install_dir}|g;
             s|%ARCH%|${arch}|g" \
             "${_cfg}" > "${isofs_dir}/isolinux/${_cfg##*/}"
    done
    install -m 0644 -- "${airootfs_dir}/usr/lib/syslinux/bios/isolinux.bin" "${isofs_dir}/isolinux/"
    install -m 0644 -- "${airootfs_dir}/usr/lib/syslinux/bios/isohdpfx.bin" "${isofs_dir}/isolinux/"
    install -m 0644 -- "${airootfs_dir}/usr/lib/syslinux/bios/ldlinux.c32" "${isofs_dir}/isolinux/"

    # isolinux.cfg loads syslinux.cfg
    _run_once _make_boot_bios.syslinux.mbr

    _msg_info "Done! SYSLINUX set up for BIOS booting from an optical disc successfully."
}

# Prepare /EFI on ISO-9660
_make_efi() {
    _msg_info "Preparing an /EFI directory for the ISO 9660 file system..."
    install -d -m 0755 -- "${isofs_dir}/EFI/BOOT"
    install -m 0644 -- "${airootfs_dir}/usr/lib/systemd/boot/efi/systemd-bootx64.efi" \
        "${isofs_dir}/EFI/BOOT/BOOTx64.EFI"

    install -d -m 0755 -- "${isofs_dir}/loader/entries"
    install -m 0644 -- "${profile}/efiboot/loader/loader.conf" "${isofs_dir}/loader/"

    for _conf in "${profile}/efiboot/loader/entries/"*".conf"; do
        sed "s|%PARABOLAISO_LABEL%|${iso_label}|g;
             s|%INSTALL_DIR%|${install_dir}|g;
             s|%ARCH%|${arch}|g" \
            "${_conf}" > "${isofs_dir}/loader/entries/${_conf##*/}"
    done

    # edk2-shell based UEFI shell
    # shellx64.efi is picked up automatically when on /
    if [[ -e "${airootfs_dir}/usr/share/edk2-shell/x64/Shell_Full.efi" ]]; then
        install -m 0644 -- "${airootfs_dir}/usr/share/edk2-shell/x64/Shell_Full.efi" "${isofs_dir}/shellx64.efi"
    fi
}

_make_refind_efi() {
    _msg_info "Preparing an /EFI directory for the ISO 9660 file system..."
    install -d -m 0755 -- "${isofs_dir}/EFI/BOOT/entries"
    install -m 0644 -- "${airootfs_dir}/usr/share/refind/refind_x64.efi" \
        "${isofs_dir}/EFI/BOOT/BOOTx64.EFI"

    install -m 0644 -- "${profile}/efiboot/EFI/BOOT/refind.conf" "${isofs_dir}/EFI/BOOT/"

    for _conf in "${profile}/efiboot/EFI/BOOT/entries/"*".conf"; do
        sed "s|%PARABOLAISO_LABEL%|${iso_label}|g;
             s|%INSTALL_DIR%|${install_dir}|g;
             s|%ARCH%|${arch}|g" \
            "${_conf}" > "${isofs_dir}/EFI/BOOT/entries/${_conf##*/}"
    done

    # edk2-shell based UEFI shell
    # shellx64.efi is picked up automatically when on /
    if [[ -e "${airootfs_dir}/usr/share/edk2-shell/x64/Shell_Full.efi" ]]; then
        install -m 0644 -- "${airootfs_dir}/usr/share/edk2-shell/x64/Shell_Full.efi" "${isofs_dir}/shellx64.efi"
    fi
}

# Prepare kernel/initramfs on efiboot.img
_make_boot_on_fat() {
    _msg_info "Preparing kernel and initramfs for the FAT file system..."
    mmd -i "${work_dir}/efiboot.img" \
        "::/${install_dir}" "::/${install_dir}/boot" "::/${install_dir}/boot/x86_64"
    mcopy -i "${work_dir}/efiboot.img" "${airootfs_dir}/boot/vmlinuz-"* \
        "${airootfs_dir}/boot/initramfs-"*".img" "::/${install_dir}/boot/x86_64/"
    _msg_info "Done!"
}

# Prepare efiboot.img::/EFI for EFI boot mode
_make_boot_uefi-x64.systemd-boot.esp() {
    local efiboot_imgsize="0"
    _msg_info "Setting up systemd-boot for UEFI booting..."

    # the required image size in KiB (rounded up to the next full MiB with an additional MiB for reserved sectors)
    efiboot_imgsize="$(du -bc \
        "${airootfs_dir}/usr/lib/systemd/boot/efi/systemd-bootx64.efi" \
        "${airootfs_dir}/usr/share/edk2-shell/x64/Shell_Full.efi" \
        "${profile}/efiboot/" \
        "${airootfs_dir}/boot/vmlinuz-"* \
        "${airootfs_dir}/boot/initramfs-"*".img" \
        2>/dev/null | awk 'function ceil(x){return int(x)+(x>int(x))}
            function byte_to_kib(x){return x/1024}
            function mib_to_kib(x){return x*1024}
            END {print mib_to_kib(ceil((byte_to_kib($1)+1024)/1024))}'
        )"
    # The FAT image must be created with mkfs.fat not mformat, as some systems have issues with mformat made images:
    # https://lists.gnu.org/archive/html/grub-devel/2019-04/msg00099.html
    [[ -e "${work_dir}/efiboot.img" ]] && rm -f -- "${work_dir}/efiboot.img"
    _msg_info "Creating FAT image of size: ${efiboot_imgsize} KiB..."
    mkfs.fat -C -n PARABOLAISO_EFI "${work_dir}/efiboot.img" "$efiboot_imgsize"

    mmd -i "${work_dir}/efiboot.img" ::/EFI ::/EFI/BOOT
    mcopy -i "${work_dir}/efiboot.img" \
        "${airootfs_dir}/usr/lib/systemd/boot/efi/systemd-bootx64.efi" ::/EFI/BOOT/BOOTx64.EFI

    mmd -i "${work_dir}/efiboot.img" ::/loader ::/loader/entries
    mcopy -i "${work_dir}/efiboot.img" "${profile}/efiboot/loader/loader.conf" ::/loader/
    for _conf in "${profile}/efiboot/loader/entries/"*".conf"; do
        sed "s|%PARABOLAISO_LABEL%|${iso_label}|g;
             s|%INSTALL_DIR%|${install_dir}|g;
             s|%ARCH%|${arch}|g" \
            "${_conf}" | mcopy -i "${work_dir}/efiboot.img" - "::/loader/entries/${_conf##*/}"
    done

    # shellx64.efi is picked up automatically when on /
    if [[ -e "${airootfs_dir}/usr/share/edk2-shell/x64/Shell_Full.efi" ]]; then
        mcopy -i "${work_dir}/efiboot.img" \
            "${airootfs_dir}/usr/share/edk2-shell/x64/Shell_Full.efi" ::/shellx64.efi
    fi

    # Copy kernel and initramfs
    _make_boot_on_fat

    _msg_info "Done! systemd-boot set up for UEFI booting successfully."
}

_make_boot_uefi-x64.refind.esp() {
    local efiboot_imgsize="0"
    _msg_info "Setting up rEFInd for UEFI booting..."

    # the required image size in KiB (rounded up to the next full MiB with an additional MiB for reserved sectors)
    efiboot_imgsize="$(du -bc \
        "${airootfs_dir}/usr/share/refind/refind_x64.efi" \
        "${airootfs_dir}/usr/share/edk2-shell/x64/Shell_Full.efi" \
        "${profile}/efiboot/" \
        "${airootfs_dir}/boot/vmlinuz-"* \
        "${airootfs_dir}/boot/initramfs-"*".img" \
        2>/dev/null | awk 'function ceil(x){return int(x)+(x>int(x))}
            function byte_to_kib(x){return x/1024}
            function mib_to_kib(x){return x*1024}
            END {print mib_to_kib(ceil((byte_to_kib($1)+1024)/1024))}'
        )"
    # The FAT image must be created with mkfs.fat not mformat, as some systems have issues with mformat made images:
    # https://lists.gnu.org/archive/html/grub-devel/2019-04/msg00099.html
    [[ -e "${work_dir}/efiboot.img" ]] && rm -f -- "${work_dir}/efiboot.img"
    _msg_info "Creating FAT image of size: ${efiboot_imgsize} KiB..."
    mkfs.fat -C -n PARABOLAISO_EFI "${work_dir}/efiboot.img" "$efiboot_imgsize"

    mmd -i "${work_dir}/efiboot.img" ::/EFI ::/EFI/BOOT
    mcopy -i "${work_dir}/efiboot.img" \
        "${airootfs_dir}/usr/share/refind/refind_x64.efi" ::/EFI/BOOT/BOOTx64.EFI

    mmd -i "${work_dir}/efiboot.img" ::/EFI/BOOT/entries
    mcopy -i "${work_dir}/efiboot.img" "${profile}/efiboot/EFI/BOOT/refind.conf" ::/EFI/BOOT/
    for _conf in "${profile}/efiboot/EFI/BOOT/entries/"*".conf"; do
        sed "s|%PARABOLAISO_LABEL%|${iso_label}|g;
             s|%INSTALL_DIR%|${install_dir}|g;
             s|%ARCH%|${arch}|g" \
            "${_conf}" | mcopy -i "${work_dir}/efiboot.img" - "::/EFI/BOOT/entries/${_conf##*/}"
    done

    # shellx64.efi is picked up automatically when on /
    if [[ -e "${airootfs_dir}/usr/share/edk2-shell/x64/Shell_Full.efi" ]]; then
        mcopy -i "${work_dir}/efiboot.img" \
            "${airootfs_dir}/usr/share/edk2-shell/x64/Shell_Full.efi" ::/shellx64.efi
    fi

    # Copy kernel and initramfs
    _make_boot_on_fat

    _msg_info "Done! rEFInd set up for UEFI booting successfully."
}

# Prepare efiboot.img::/EFI for "El Torito" EFI boot mode
_make_boot_uefi-x64.systemd-boot.eltorito() {
    _run_once _make_boot_uefi-x64.systemd-boot.esp
    # Set up /EFI on ISO-9660
    _run_once _make_efi
}

_make_boot_uefi-x64.refind.eltorito() {
    _run_once _make_boot_uefi-x64.refind.esp
    # Set up /EFI on ISO-9660
    _run_once _make_refind_efi
}

# Build airootfs filesystem image
_make_prepare() {
    if [[ "${sfs_mode}" == "sfs" ]]; then
        _run_once _mkairootfs_sfs
    else
        _run_once _mkairootfs_img
    fi
    _mkchecksum
    if [[ "${gpg_key}" ]]; then
      _mksignature
    fi
}

# Build ISO
_make_iso() {
    local xorrisofs_options=()

    [[ -d "${out_dir}" ]] || install -d -- "${out_dir}"

    if [[ "${quiet}" == "y" ]]; then
        xorrisofs_options+=('-quiet')
    fi

    # xorrisofs options for x86 BIOS booting using SYSLINUX
    # shellcheck disable=SC2076
    if [[ " ${bootmodes[*]} " =~ ' bios.syslinux.' ]]; then

        # SYSLINUX El Torito
        if [[ " ${bootmodes[*]} " =~ ' bios.syslinux.eltorito ' ]]; then
            if [[ ! -f "${isofs_dir}/isolinux/isolinux.bin" ]]; then
                _msg_error "The file '${isofs_dir}/isolinux/isolinux.bin' does not exist." 1
            fi

            # SYSLINUX MBR
            if [[ " ${bootmodes[*]} " =~ ' bios.syslinux.mbr ' ]]; then
                if [[ ! -f "${isofs_dir}/isolinux/isohdpfx.bin" ]]; then
                    _msg_error "The file '${isofs_dir}/isolinux/isohdpfx.bin' does not exist." 1
                fi

                xorrisofs_options+=(
                    # SYSLINUX MBR bootstrap code; does not work without "-eltorito-boot isolinux/isolinux.bin"
                    '-isohybrid-mbr' "${isofs_dir}/isolinux/isohdpfx.bin"
                    # When GPT is used, create an additional partition in the MBR (besides 0xEE) for sectors 0–1 (MBR
                    # bootstrap code area) and mark it as bootable
                    # This violates the UEFI specification, but may allow booting on some systems
                    # https://wiki.parabola.nu/Partitioning#Tricking_old_BIOS_into_booting_from_GPT
                    '--mbr-force-bootable'
                    # Set the ISO 9660 partition's type to "Linux filesystem data"
                    # When only MBR is present, the partition type ID will be 0x83 "Linux" as xorriso translates all
                    # GPT partition type GUIDs except for the ESP GUID to MBR type ID 0x83
                    '-iso_mbr_part_type' '0FC63DAF-8483-4772-8E79-3D69D8477DE4'
                    # Move the first partition away from the start of the ISO to match the expectations of partition
                    # editors
                    # May allow booting on some systems
                    # https://dev.lovelyhq.com/libburnia/libisoburn/src/branch/master/doc/partition_offset.wiki
                    '-partition_offset' '16'
                )
            fi

            xorrisofs_options+=(
                # El Torito boot image for x86 BIOS
                '-eltorito-boot' 'isolinux/isolinux.bin'
                # El Torito boot catalog file
                '-eltorito-catalog' 'isolinux/boot.cat'
                # Required options to boot with ISOLINUX
                '-no-emul-boot' '-boot-load-size' '4' '-boot-info-table'
            )
        else
            _msg_error "Using 'bios.syslinux.mbr' boot mode without 'bios.syslinux.eltorito' is not supported." 1
        fi
    fi

    # xorrisofs options for X64 UEFI booting using rEFInd/systemd-boot
    # shellcheck disable=SC2076
    if [[ " ${bootmodes[*]} " =~ ( uefi-x64.refind.| uefi-x64.systemd-boot.) ]]; then
        if [[ ! -f "${work_dir}/efiboot.img" ]]; then
            _msg_error "The file '${work_dir}/efiboot.img' does not exist." 1
        fi
        [[ -e "${isofs_dir}/EFI/parabolaiso" ]] && rm -rf -- "${isofs_dir}/EFI/parabolaiso"

        # rEFInd/systemd-boot in an attached EFI system partition
        if [[ " ${bootmodes[*]} " =~ ( uefi-x64.refind.esp| uefi-x64.systemd-boot.esp) ]]; then
            # Move the first partition away from the start of the ISO, otherwise the GPT will not be valid and ISO 9660
            # partition will not be mountable
            [[ " ${xorrisofs_options[*]} " =~ ' -partition_offset ' ]] || xorrisofs_options+=('-partition_offset' '16')
            xorrisofs_options+=(
                # Attach efiboot.img as a second partition and set its partition type to "EFI system partition"
                '-append_partition' '2' 'C12A7328-F81F-11D2-BA4B-00A0C93EC93B' "${work_dir}/efiboot.img"
                # Ensure GPT is used as some systems do not support UEFI booting without it
                '-appended_part_as_gpt'
            )

            # rEFInd/systemd-boot in an attached EFI system partition via El Torito
            if [[ " ${bootmodes[*]} " =~ ( uefi-x64.refind.eltorito| uefi-x64.systemd-boot.eltorito) ]]; then
                xorrisofs_options+=(
                    # Start a new El Torito boot entry for UEFI
                    '-eltorito-alt-boot'
                    # Set the second partition as the El Torito UEFI boot image
                    '-e' '--interval:appended_partition_2:all::'
                    # Boot image is not emulating floppy or hard disk; required for all known boot loaders
                    '-no-emul-boot'
                )
            fi
        # rEFInd/systemd-boot in an embedded efiboot.img via El Torito
        elif [[ " ${bootmodes[*]} " =~ ( uefi-x64.refind.eltorito| uefi-x64.systemd-boot.eltorito) ]]; then
            # The ISO will not contain a GPT partition table, so to be able to reference efiboot.img, place it as a
            # file inside the ISO 9660 file system
            install -d -m 0755 -- "${isofs_dir}/EFI/parabolaiso"
            cp -a -- "${work_dir}/efiboot.img" "${isofs_dir}/EFI/parabolaiso/efiboot.img"

            xorrisofs_options+=(
                # Start a new El Torito boot entry for UEFI
                '-eltorito-alt-boot'
                # Set efiboot.img as the El Torito UEFI boot image
                '-e' 'EFI/parabolaiso/efiboot.img'
                # Boot image is not emulating floppy or hard disk; required for all known boot loaders
                '-no-emul-boot'
            )
        fi

        # Specify where to save the El Torito boot catalog file in case it is not already set by bios.syslinux.eltorito
        [[ " ${bootmodes[*]} " =~ ' bios.' ]] || xorrisofs_options+=('-eltorito-catalog' 'EFI/boot.cat')
    fi

    _msg_info "Creating ISO image..."
    xorriso -as mkisofs \
            -iso-level 3 \
            -full-iso9660-filenames \
            -joliet \
            -joliet-long \
            -rational-rock \
            -volid "${iso_label}" \
            -appid "${iso_application}" \
            -publisher "${iso_publisher}" \
            -preparer "prepared by ${app_name}" \
            "${xorrisofs_options[@]}" \
            -output "${out_dir}/${img_name}" \
            "${isofs_dir}/"
    _msg_info "Done!"
    du -h -- "${out_dir}/${img_name}"
}

# Read profile's values from profiledef.sh
_read_profile() {
    if [[ -z "${profile}" ]]; then
        _msg_error "No profile specified!" 1
    fi
    if [[ ! -d "${profile}" ]]; then
        _msg_error "Profile '${profile}' does not exist!" 1
    elif [[ ! -e "${profile}/profiledef.sh" ]]; then
        _msg_error "Profile '${profile}' is missing 'profiledef.sh'!" 1
    else
        cd -- "${profile}"

        # Source profile's variables
        # shellcheck source=configs/releng/profiledef.sh
        . "${profile}/profiledef.sh"

        if [[ "${arch}" == "dual" ]]; then
            # Resolve paths
            packages="$(realpath -- "${profile}"/packages.{both,i686,x86_64})"
            pacman_conf="$(realpath -- "${pacman_conf}")"

            # Enumerate packages
            local pkgs
            for pkgs in ${packages}; do
                if [[ "${pkgs##*/}" = "packages.both" ]]; then
                    [[ -e "${pkgs}" ]] || _msg_error "File '${pkgs}' does not exist!" 1
                    mapfile -t pkg_list < <(sed '/^[[:blank:]]*#.*/d;s/#.*//;/^[[:blank:]]*$/d' "${pkgs}")
                elif [[ -e "${pkgs}" ]]; then
                    mapfile -t "pkg_list_${pkgs##*.}" < <(sed '/^[[:blank:]]*#.*/d;s/#.*//;/^[[:blank:]]*$/d' "${pkgs}")
                fi
            done
        else
            # Resolve paths
            packages="$(realpath -- "${profile}/packages.${arch}")"
            pacman_conf="$(realpath -- "${pacman_conf}")"

            # Enumerate packages
            [[ -e "${packages}" ]] || _msg_error "File '${packages}' does not exist!" 1
            mapfile -t pkg_list < <(sed '/^[[:blank:]]*#.*/d;s/#.*//;/^[[:blank:]]*$/d' "${packages}")
        fi

        cd -- "${OLDPWD}"
    fi
}

# set overrides from mkparabolaiso option parameters, if present
_set_overrides() {
    if [[ -n "$override_iso_label" ]]; then
        iso_label="$override_iso_label"
    fi
    if [[ -n "$override_iso_publisher" ]]; then
        iso_publisher="$override_iso_publisher"
    fi
    if [[ -n "$override_iso_application" ]]; then
        iso_application="$override_iso_application"
    fi
    if [[ -n "$override_install_dir" ]]; then
        install_dir="$override_install_dir"
    fi
    if [[ -n "$override_pacman_conf" ]]; then
        pacman_conf="$override_pacman_conf"
    fi
    if [[ -n "$override_gpg_key" ]]; then
        gpg_key="$override_gpg_key"
    fi
}

_export_gpg_publickey() {
    if [[ -n "${gpg_key}" ]]; then
        gpg --batch --output "${work_dir}/pubkey.gpg" --export "${gpg_key}"
    fi
}


_make_pkglist() {
    install -d -m 0755 -- "${isofs_dir}/${install_dir}"
    _msg_info "Creating a list of installed packages on ${arch} live-enviroment..."
    pacman -Q --sysroot "${airootfs_dir}" > "${isofs_dir}/${install_dir}/pkglist.${arch}.txt"
    _msg_info "Done!"
}

command_pkglist() {
    _show_config "${FUNCNAME[0]#command_}"
    _make_pkglist
}

# Create an ISO9660 filesystem from "iso" directory.
command_iso() {
    bootmodes=('bios.syslinux.mbr' 'bios.syslinux.eltorito')

    # If exists, add an EFI "El Torito" boot image (FAT filesystem) to ISO-9660 image.
    if [[ -f "${work_dir}/efiboot.img" ]]; then
        if [[ -e "${airootfs_dir}/usr/share/refind/refind_x64.efi" ]]; then
            bootmodes+=('uefi-x64.refind.esp' 'uefi-x64.refind.eltorito')
        else
            bootmodes+=('uefi-x64.systemd-boot.esp' 'uefi-x64.systemd-boot.eltorito')
        fi
    fi

    _show_config "${FUNCNAME[0]#command_}"
    _make_iso
}

# create airootfs.sfs filesystem, and push it in "iso" directory.
command_prepare() {
    _show_config "${FUNCNAME[0]#command_}"

    _cleanup
    _make_prepare
}

# Install packages on airootfs.
# A basic check to avoid double execution/reinstallation is done via hashing package names.
command_install() {
    if [[ ! -f "${pacman_conf}" ]]; then
        _msg_error "Pacman config file '${pacman_conf}' does not exist" 1
    fi

    if (( ${#pkg_list[@]} == 0 )); then
        _msg_error "Packages must be specified" 0
        _usage 1
    fi

    _show_config "${FUNCNAME[0]#command_}"

    _make_packages
}

command_init() {
    _show_config "${FUNCNAME[0]#command_}"
    _chroot_init
}

command_run() {
    _show_config "${FUNCNAME[0]#command_}"
    _chroot_run
}

command_build_profile() {
    # Set up essential directory paths
    airootfs_dir="${work_dir}/${arch}/airootfs"
    isofs_dir="${work_dir}/iso"
    # Set ISO file name
    img_name="${iso_name}-${iso_version}-${arch}.iso"

    # Create working directory
    [[ -d "${work_dir}" ]] || install -d -- "${work_dir}"
    # Write build date to file or if the file exists, read it from there
    if [[ -e "${work_dir}/build_date" ]]; then
        SOURCE_DATE_EPOCH="$(<"${work_dir}/build_date")"
    else
        printf '%s\n' "$SOURCE_DATE_EPOCH" > "${work_dir}/build_date"
    fi

    _show_config "${FUNCNAME[0]#command_}"

    _run_dual '_run_once _make_pacman_conf'
    _run_once _export_gpg_publickey
    _run_dual '_run_once _make_custom_airootfs' \
              '_run_once _make_packages'
    _run_dual '_run_once _make_customize_airootfs'
    _run_dual '_run_once _make_pkglist'
    _make_bootmodes
    _run_dual '_run_once _cleanup' \
              '_run_once _make_prepare'
    _run_once _make_iso
}

while getopts 'p:r:C:L:P:A:D:w:o:s:c:g:vh?' arg; do
    case "${arg}" in
        p)
            read -r -a opt_pkg_list <<< "${OPTARG}"
            pkg_list+=("${opt_pkg_list[@]}")
            ;;
        r) run_cmd="${OPTARG}" ;;
        C) override_pacman_conf="$(realpath -- "${OPTARG}")" ;;
        L) override_iso_label="${OPTARG}" ;;
        P) override_iso_publisher="${OPTARG}" ;;
        A) override_iso_application="${OPTARG}" ;;
        D) override_install_dir="${OPTARG}" ;;
        w) work_dir="$(realpath -- "${OPTARG}")" ;;
        o) out_dir="$(realpath -- "${OPTARG}")" ;;
        s) sfs_mode="${OPTARG}" ;;
        c) sfs_comp="${OPTARG}" ;;
        g) override_gpg_key="${OPTARG}" ;;
        v) quiet="n" ;;
        h|?) _usage 0 ;;
        *)
            _msg_error "Invalid argument '${arg}'" 0
            _usage 1
            ;;
    esac
done

shift $((OPTIND - 1))

if (( $# < 1 )); then
    _msg_error "No command specified" 0
    _usage 1
fi

if (( EUID != 0 )); then
    _msg_error "${app_name} must be run as root." 1
fi

command_name="${1}"

# Set directory path defaults for legacy commands
airootfs_dir="${work_dir}/airootfs"
isofs_dir="${work_dir}/iso"

case "${command_name}" in
    init)
        _msg_warning "The '${command_name}' command is deprecated! It will be removed with parabolaiso v49."
        _set_overrides
        command_init
        ;;
    install)
        _msg_warning "The '${command_name}' command is deprecated! It will be removed with parabolaiso v49."
        _set_overrides
        command_install
        ;;
    run)
        _msg_warning "The '${command_name}' command is deprecated! It will be removed with parabolaiso v49."
        command_run
        ;;
    prepare)
        _msg_warning "The '${command_name}' command is deprecated! It will be removed with parabolaiso v49."
        _set_overrides
        command_prepare
        ;;
    pkglist)
        _msg_warning "The '${command_name}' command is deprecated! It will be removed with parabolaiso v49."
        command_pkglist
        ;;
    iso)
        _msg_warning "The '${command_name}' command is deprecated! It will be removed with parabolaiso v49."
        if (( $# < 2 )); then
            _msg_error "No image specified" 0
            _usage 1
        fi
        img_name="${2}"
        _set_overrides
        command_iso
        ;;
    *)
        # NOTE: we call read_profile here, assuming that the first non-option parameter is a profile directory
        # This way we can retain backwards compatibility with legacy build.sh scripts until we deprecate the old way of
        # calling mkparabolaiso with named parameters in v49
        profile="$(realpath -- "${command_name}")"
        _read_profile
        _set_overrides
        command_build_profile
        ;;
esac

# vim:ts=4:sw=4:et: