Send patches - preferably formatted by git format-patch - to patches at archlinux32 dot org.
summaryrefslogtreecommitdiff
path: root/archiso/mkarchiso
blob: 75eb9cb2e90df83751681c2e86ef3c2667561b14 (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
#!/bin/bash

set -e -u

export LANG=C

app_name=${0##*/}
arch=$(uname -m)
pkg_list=""
run_cmd=""
quiet="y"
pacman_conf="/etc/pacman.conf"
export iso_label="ARCH_$(date +%Y%m)"
iso_publisher="Arch Linux <http://www.archlinux.org>"
iso_application="Arch Linux Live/Rescue CD"
install_dir="arch"
work_dir="work"
out_dir="out"

# Show an INFO message
# $1: message string
_msg_info() {
    local _msg="${1}"
    echo "[mkarchiso] INFO: ${_msg}"
}

# 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}
    echo
    echo "[mkarchiso] ERROR: ${_msg}"
    echo
    if [[ ${_error} -gt 0 ]]; then
        exit ${_error}
    fi
}

# Show space usage similar to df, but better formatted.
# $1: mount-point or mounted device.
_show_space_usage () {
    local _where="${1}"
    local _fs _total _used _avail _pct_u=0 _mnt
    read _fs _total _used _avail _pct_u _mnt < <(df -m "${_where}" | tail -1) &> /dev/null
    _msg_info "Total: ${_total} MiB (100%) | Used: ${_used} MiB (${_pct_u}) | Avail: ${_avail} MiB ($((100 - ${_pct_u%\%}))%)"
}

_chroot_mount () {
    mount -t devtmpfs dev "${work_dir}/root-image/dev"
    mount -t devpts devpts "${work_dir}/root-image/dev/pts"
    mount -t tmpfs devshm "${work_dir}/root-image/dev/shm"
    mount -t proc proc "${work_dir}/root-image/proc"
    mount -t tmpfs run "${work_dir}/root-image/run"
    mount -t sysfs sys "${work_dir}/root-image/sys"
    mount -t tmpfs tmp "${work_dir}/root-image/tmp"

    trap '_chroot_umount' EXIT HUP INT TERM
}

_chroot_umount () {
    umount "${work_dir}/root-image/tmp"
    umount "${work_dir}/root-image/sys"
    umount "${work_dir}/root-image/run"
    umount "${work_dir}/root-image/proc"
    umount "${work_dir}/root-image/dev/shm"
    umount "${work_dir}/root-image/dev/pts"
    umount "${work_dir}/root-image/dev"

    trap - EXIT HUP INT TERM
}

_chroot_init() {
    if [[ ! -d ${work_dir}/root-image/var/cache/pacman ]]; then
        mkdir -p ${work_dir}/root-image/{dev,proc,run,sys,tmp,var/lib/pacman}
        _pacman "base"
        _pacman "syslinux"
    fi
}

_chroot_run() {
    _chroot_mount
    eval chroot ${work_dir}/root-image "${run_cmd}"
    _chroot_umount
}

# Mount a filesystem (trap signals in case of error for unmounting it
# $1: source image
# $2: mount-point
_mount_fs() {
    local _src="${1}"
    local _dst="${2}"
    trap "_umount_fs ${_src}" EXIT HUP INT TERM
    mkdir -p "${_dst}"
    _msg_info "Mounting '${_src}' on '${_dst}'"
    mount "${_src}" "${_dst}"
    _show_space_usage "${_dst}"
}

# Unmount a filesystem (and untrap signals)
# $1: mount-point or device/image
_umount_fs() {
    local _dst="${1}"
    _show_space_usage "${_dst}"
    _msg_info "Unmounting '${_dst}'"
    umount "${_dst}"
    rmdir "${_dst}"
    trap - EXIT HUP INT TERM
}

# Compare if a file/directory (source) is newer than other file (target)
# $1: source file/directory
# $2: target file
# return: 0 if target does not exists or if target is older than source.
#         1 if target is newer than source
_is_directory_changed() {
    local _src="${1}"
    local _dst="${2}"

    if [ -e "${_dst}" ]; then
        if [[ $(find ${_src} -newer ${_dst} | wc -l) -gt 0 ]]; then
            _msg_info "Target '${_dst}' is older than '${_src}', updating."
            rm -f "${_dst}"
            return 0
        else
            _msg_info "Target '${_dst}' is up to date with '${_src}', skipping."
            return 1
        fi
    else
        _msg_info "Target '${_dst}' does not exist, making it from '${_src}'"
        return 0
    fi
}

# Show help usage, with an exit status.
# $1: exit status number.
_usage ()
{
    echo "usage ${app_name} [options] command <command options>"
    echo " general options:"
    echo "    -p PACKAGE(S)    Package(s) to install, can be used multiple times"
    echo "    -r <command>     Run <command> inside root-image"
    echo "    -C <file>        Config file for pacman."
    echo "                     Default: '${pacman_conf}'"
    echo "    -L <label>       Set a label for the disk"
    echo "                     Default: '${iso_label}'"
    echo "    -P <publisher>   Set a publisher for the disk"
    echo "                     Default: '${iso_publisher}'"
    echo "    -A <application> Set an application name for the disk"
    echo "                     Default: '${iso_application}'"
    echo "    -D <install_dir> Set an install_dir. All files will by located here."
    echo "                     Default: '${install_dir}'"
    echo "                     NOTE: Max 8 characters, use only [a-z0-9]"
    echo "    -w <work_dir>    Set the working directory"
    echo "                     Default: '${work_dir}'"
    echo "    -o <out_dir>     Set the output directory"
    echo "                     Default: '${out_dir}'"
    echo "    -v               Enable verbose output"
    echo "    -h               This message"
    echo " commands:"
    echo "   init"
    echo "      Make base layout and install base group"
    echo "   install"
    echo "      Install all specified packages (-p)"
    echo "   run"
    echo "      run command specified by -r"
    echo "   prepare"
    echo "      build all images"
    echo "   checksum"
    echo "      make a checksum.md5 for self-test"
    echo "   pkglist"
    echo "      make a pkglist.txt of packages installed on root-image"
    echo "   iso <image name>"
    echo "      build an iso image from the working dir"
    exit ${1}
}

# Shows configuration according to command mode.
# $1: init | install | run | prepare | checksum | iso
_show_config () {
    local _mode="$1"
    echo
    _msg_info "Configuration settings"
    _msg_info "                  Command:   ${command_name}"
    _msg_info "             Architecture:   ${arch}"
    _msg_info "        Working directory:   ${work_dir}"
    _msg_info "   Installation directory:   ${install_dir}"
    case "${_mode}" in
        init)
            _msg_info "       Pacman config file:   ${pacman_conf}"
            ;;
        install)
            _msg_info "       Pacman config file:   ${pacman_conf}"
            _msg_info "                 Packages:   ${pkg_list}"
            ;;
        run)
            _msg_info "              Run command:   ${run_cmd}"
            ;;
        prepare)
            ;;
        checksum)
            ;;
        pkglist)
            ;;
        iso)
            _msg_info "               Image name:   ${img_name}"
            _msg_info "               Disk label:   ${iso_label}"
            _msg_info "           Disk publisher:   ${iso_publisher}"
            _msg_info "         Disk application:   ${iso_application}"
            ;;
    esac
    echo
}

# Install desired packages to root-image
_pacman ()
{
    _msg_info "Installing packages to '${work_dir}/root-image/'..."

    _chroot_mount

    if [[ "${quiet}" = "y" ]]; then
        pacman -Sy -r "${work_dir}/root-image" --config "${pacman_conf}" --needed --noconfirm $* &> /dev/null
    else
        pacman -Sy -r "${work_dir}/root-image" --config "${pacman_conf}" --needed --noconfirm $*
    fi

    _chroot_umount

    _msg_info "Packages installed successfully!"
}

# Cleanup root-image
_cleanup () {
    _msg_info "Cleaning up what we can on root-image"

    # remove the initcpio images that were generated for the host system
    if [[ -d "${work_dir}/root-image/boot" ]]; then 
        find "${work_dir}/root-image/boot" -name '*.img' -delete
    fi
    # Delete pacman database sync cache files (*.tar.gz)
    if [[ -d "${work_dir}/root-image/var/lib/pacman" ]]; then
        find "${work_dir}/root-image/var/lib/pacman" -maxdepth 1 -type f -delete
    fi
    # Delete pacman database sync cache
    if [[ -d "${work_dir}/root-image/var/lib/pacman/sync" ]]; then
        find "${work_dir}/root-image/var/lib/pacman/sync" -delete
    fi
    # Delete pacman package cache
    if [[ -d "${work_dir}/root-image/var/cache/pacman/pkg" ]]; then
        find "${work_dir}/root-image/var/cache/pacman/pkg" -type f -delete
    fi
    # Delete all log files, keeps empty dirs.
    if [[ -d "${work_dir}/root-image/var/log" ]]; then
        find "${work_dir}/root-image/var/log" -type f -delete
    fi
    # Delete all temporary files and dirs
    if [[ -d "${work_dir}/root-image/var/tmp" ]]; then
        find "${work_dir}/root-image/var/tmp" -mindepth 1 -delete
    fi
    # Delete all temporary files and dirs
    if [[ -d "${work_dir}/root-image/tmp" ]]; then
        find "${work_dir}/root-image/tmp" -mindepth 1 -delete
    fi
    # Delete package pacman related files.
    find "${work_dir}" -name "*.pacnew" -name "*.pacsave" -name "*.pacorig" -delete
    # Create etc/mtab if not is a symlink.
    if [[ ! -L "${work_dir}/root-image/etc/mtab" ]]; then
        ln -sf "/proc/self/mounts" "${work_dir}/root-image/etc/mtab"
    fi
}

# Makes a SquashFS filesystem image of file/directory passes as argument with desired compression.
# $1: Source file/directory
# $2: SquashFS compression type (gzip | lzo | xz)
_mksfs () {
    local _src="${1}"
    local _sfs_comp="${2}"

    if [[ ! -e "${work_dir}/${_src}" ]]; then
        _msg_error "The path '${work_dir}/${_src}' does not exist" 1
    fi

    local _sfs_img="${work_dir}/${_src}.sfs"

    _msg_info "Creating SquashFS image for '${work_dir}/${_src}', This may take some time..."
    local _seconds=${SECONDS}
    if [[ "${quiet}" = "y" ]]; then
        mksquashfs "${work_dir}/${_src}" "${_sfs_img}" -noappend -comp "${_sfs_comp}" -no-progress &> /dev/null
    else
        mksquashfs "${work_dir}/${_src}" "${_sfs_img}" -noappend -comp "${_sfs_comp}" -no-progress
    fi
    _seconds=$((SECONDS - _seconds))
    printf "[mkarchiso] INFO: Image creation done in %02d:%02d minutes\n" $((_seconds / 60)) $((_seconds % 60))
}

# Makes a filesystem from a source directory.
# $1: Source directory
# $2: Target filesystem type (ext4 | ext3 | ext2 | xfs)
# $3: Size of target filesystem. Can be an absolute value in MiB, or relative value of desired free space (1% - 99%)
_mkfs () {
    local _src="${1}"
    local _fs_type="${2}"
    local _fs_size="${3}"

    local _fs_src="${work_dir}/${_src}"
    local _fs_img="${work_dir}/${_src}.fs"

    if [[ ! -e "${_fs_src}" ]]; then
        _msg_error "The path '${_fs_src}' does not exist" 1
    fi

    local _spc_used
    _spc_used=$(du -sxm "${_fs_src}" | awk '{print $1}')

    # Caculate FS size with desired % of free space, adds 10% overhead to used space.
    if [[ ${_fs_size} != ${_fs_size%\%} ]]; then
        if [[ ${_fs_size%\%} -le 0 || ${_fs_size%\%} -ge 100 ]]; then
            _msg_error "Invalid percentage of free space specified '${_fs_size}' on '${_src}', should be 0% < x < 100%" 1
        fi
        _fs_size=$((_spc_used * 110 / (100 - ${_fs_size%\%})))
    else
        local _spc_used_over=$((_spc_used * 11 / 10))
        if [[ ${_fs_size} -lt ${_spc_used_over} ]]; then
            _msg_error "Filesystem size specified '${_fs_size}' MiB for '${_src}' is too small, must be at least '${_spc_used_over}' MiB" 1
        fi
    fi

    _msg_info "Creating ${_fs_type} image of ${_fs_size} MiB"
    rm -f "${_fs_img}"
    dd of="${_fs_img}" count=0 bs=1M seek=${_fs_size} &> /dev/null
    local _qflag=""
    if [[ ${quiet} == "y" ]]; then
        _qflag="-q"
    fi
    case "${_fs_type}" in
        ext4)
            mkfs.ext4 ${_qflag} -O ^has_journal -m 0 -F "${_fs_img}"
            tune2fs -c 0 -i 0 "${_fs_img}" &> /dev/null
            ;;
        ext3)
            mkfs.ext3 ${_qflag} -m 0 -F "${_fs_img}"
            tune2fs -c 0 -i 0 "${_fs_img}" &> /dev/null
            ;;
        ext2)
            mkfs.ext2 ${_qflag} -m 0 -F "${_fs_img}"
            tune2fs -c 0 -i 0 "${_fs_img}" &> /dev/null
            ;;
        xfs)
            mkfs.xfs ${_qflag} "${_fs_img}"
            ;;
        *)
            _msg_error "Invalid filesystem: ${_fs_type}" 1
            ;;
    esac
    _mount_fs "${_fs_img}" "${work_dir}/mnt/${_src}"
    _msg_info "Copying '${_fs_src}/' to '${work_dir}/mnt/${_src}/'"
    rsync -aH "${_fs_src}/" "${work_dir}/mnt/${_src}/"
    _umount_fs "${work_dir}/mnt/${_src}"
}

command_checksum () {
    _show_config checksum

    local _chk_arch

    for _chk_arch in i686 x86_64; do
        if _is_directory_changed "${work_dir}/iso/${install_dir}" "${work_dir}/iso/${install_dir}/checksum.${_chk_arch}.md5"; then
            _msg_info "Creating checksum file for self-test (${_chk_arch})"
            cd "${work_dir}/iso/${install_dir}"
            if [[ -d "${_chk_arch}" ]]; then
                md5sum aitab > checksum.${_chk_arch}.md5
                find ${_chk_arch} -type f -print0 | xargs -0 md5sum >> checksum.${_chk_arch}.md5
                if [[ -d "any" ]]; then
                    find any -type f -print0 | xargs -0 md5sum >> checksum.${_chk_arch}.md5
                fi
            fi
            cd ${OLDPWD}
            _msg_info "Done!"
        fi
    done
}

command_pkglist () {
    _show_config pkglist

    if _is_directory_changed "${work_dir}/root-image/var/lib/pacman/local" "${work_dir}/iso/${install_dir}/pkglist.${arch}.txt"; then
        _msg_info "Creating a list of installed packages on live-enviroment"
        pacman -Sl -r "${work_dir}/root-image" --config "${pacman_conf}" | \
            awk '/\[installed\]$/ {print $1 "/" $2 "-" $3}' > \
            "${work_dir}/iso/${install_dir}/pkglist.${arch}.txt"
        _msg_info "Done!"
    fi

}

# Create an ISO9660 filesystem from "iso" directory.
command_iso () {
    local _iso_efi_boot_args=""

    if [[ ! -f "${work_dir}/iso/isolinux/isolinux.bin" ]]; then
         _msg_error "The file '${work_dir}/iso/isolinux/isolinux.bin' does not exist." 1
    fi
    if [[ ! -f "${work_dir}/iso/isolinux/isohdpfx.bin" ]]; then
         _msg_error "The file '${work_dir}/iso/isolinux/isohdpfx.bin' does not exist." 1
    fi

    # If exists, add an EFI "El Torito" boot image (FAT filesystem) to ISO-9660 image.
    if [[ -f "${work_dir}/iso/EFI/archiso/efiboot.img" ]]; then
        _iso_efi_boot_args="--efi-boot EFI/archiso/efiboot.img"
    fi

    _show_config iso

    if _is_directory_changed "${work_dir}/iso" "${out_dir}/${img_name}"; then
        mkdir -p ${out_dir}
        _msg_info "Creating ISO image..."
        local _qflag=""
        if [[ ${quiet} == "y" ]]; then
            _qflag="-quiet"
        fi
        xorriso -as mkisofs ${_qflag} \
            -iso-level 3 \
            -full-iso9660-filenames \
            -volid "${iso_label}" \
            -appid "${iso_application}" \
            -publisher "${iso_publisher}" \
            -preparer "prepared by mkarchiso" \
            -eltorito-boot isolinux/isolinux.bin \
            -eltorito-catalog isolinux/boot.cat \
            -no-emul-boot -boot-load-size 4 -boot-info-table \
            ${_iso_efi_boot_args} \
            -isohybrid-mbr ${work_dir}/iso/isolinux/isohdpfx.bin \
            -output "${out_dir}/${img_name}" \
            "${work_dir}/iso/"
        _msg_info "Done! | $(ls -sh ${out_dir}/${img_name})"
    fi
}

# Parse aitab and create each filesystem specified on that, and push it in "iso" directory.
command_prepare () {
    if [[ ! -f "${work_dir}/iso/${install_dir}/aitab" ]]; then
         _msg_error "The file '${work_dir}/iso/${install_dir}/aitab' does not exist." 1
    fi
    _show_config prepare

    _cleanup
    local _aitab_img _aitab_mnt _aitab_arch _aitab_sfs_comp _aitab_fs_type _aitab_fs_size
    while read _aitab_img _aitab_mnt _aitab_arch _aitab_sfs_comp _aitab_fs_type _aitab_fs_size ; do
        if [[ ${_aitab_img} =~ ^# ]]; then
            continue
        fi
        local _src="${work_dir}/${_aitab_img}"
        local _dst="${work_dir}/iso/${install_dir}/${_aitab_arch}"
        mkdir -p "${_dst}"
        if [[ ${_aitab_fs_type} != "none" ]]; then
            if _is_directory_changed "${_src}" "${_dst}/${_aitab_img}.fs.sfs"; then
                _mkfs ${_aitab_img} ${_aitab_fs_type} ${_aitab_fs_size}
                _mksfs ${_aitab_img}.fs ${_aitab_sfs_comp}
                mv "${_src}.fs.sfs" "${_dst}"
                rm "${_src}.fs"
            fi
        else
            if _is_directory_changed "${_src}" "${_dst}/${_aitab_img}.sfs"; then
                _mksfs ${_aitab_img} ${_aitab_sfs_comp}
                mv "${work_dir}/${_aitab_img}.sfs" "${_dst}"
            fi
        fi
    done < "${work_dir}/iso/${install_dir}/aitab"
}

# Install packages on root-image.
# 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

    #trim spaces
    pkg_list="$(echo ${pkg_list})"

    if [[ -z ${pkg_list} ]]; then
        _msg_error "Packages must be specified" 0
        _usage 1
    fi

    _show_config install

    local _pkg_list_hash
    _pkg_list_hash=$(echo ${pkg_list} | sort -u | md5sum | cut -c1-32)
    if [[ -f "${work_dir}/install.${_pkg_list_hash}" ]]; then
        _msg_info "These packages are already installed, skipping."
    else
        _pacman "${pkg_list}"
        : > "${work_dir}/install.${_pkg_list_hash}"
    fi
}

command_init() {
    _show_config init
    _chroot_init
}

command_run() {
    _show_config run
    _chroot_run
}

if [[ ${EUID} -ne 0 ]]; then
    _msg_error "This script must be run as root." 1
fi

while getopts 'p:r:C:L:P:A:D:w:o:vh' arg; do
    case "${arg}" in
        p) pkg_list="${pkg_list} ${OPTARG}" ;;
        r) run_cmd="${OPTARG}" ;;
        C) pacman_conf="${OPTARG}" ;;
        L) iso_label="${OPTARG}" ;;
        P) iso_publisher="${OPTARG}" ;;
        A) iso_application="${OPTARG}" ;;
        D) install_dir="${OPTARG}" ;;
        w) work_dir="${OPTARG}" ;;
        o) out_dir="${OPTARG}" ;;
        v) quiet="n" ;;
        h|?) _usage 0 ;;
        *)
            _msg_error "Invalid argument '${arg}'" 0
            _usage 1
            ;;
    esac
done

shift $((OPTIND - 1))

if [[ $# -lt 1 ]]; then
    _msg_error "No command specified" 0
    _usage 1
fi
command_name="${1}"

case "${command_name}" in
    init)
        command_init
        ;;
    install)
        command_install
        ;;
    run)
        command_run
        ;;
    prepare)
        command_prepare
        ;;
    checksum)
        command_checksum
        ;;
    pkglist)
        command_pkglist
        ;;
    iso)
        if [[ $# -lt 2 ]]; then
            _msg_error "No image specified" 0
            _usage 1
        fi
        img_name="${2}"
        command_iso
        ;;
    *)
        _msg_error "Invalid command name '${command_name}'" 0
        _usage 1
        ;;
esac

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