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7-add-legacy-bios-support #8

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hygienic-books merged 12 commits from 7-add-legacy-bios-support into main 2023-10-24 00:25:35 +00:00
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setup.sh
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@ -24,11 +24,17 @@ declare zpool_name zfs_arch_dataset_name
zpool_name='zpool' zpool_name='zpool'
zfs_arch_dataset_name='archlinux' zfs_arch_dataset_name='archlinux'
declare -A partition_types
partition_types[gpt_zfs]='6a85cf4d-1dd2-11b2-99a6-080020736631'
partition_types[gpt_efi]='c12a7328-f81f-11d2-ba4b-00a0c93ec93b'
partition_types[mbr_zfs]='0xbf'
partition_types[mbr_boot]='0x83'
# https://unix.stackexchange.com/a/48550 # https://unix.stackexchange.com/a/48550
set -E set -E
trap '[ "$?" -ne 77 ] || exit 77' ERR trap '[ "$?" -ne 77 ] || exit 77' ERR
declare zpool_drive efi_drive declare zpool_drive efi_drive part_schema
function we_are_changerooted () { function we_are_changerooted () {
if [ "$(stat -c '%d:%i' '/')" != "$(stat -c '%d:%i' '/proc/1/root/.')" ]; then if [ "$(stat -c '%d:%i' '/')" != "$(stat -c '%d:%i' '/proc/1/root/.')" ]; then
@ -38,23 +44,51 @@ function we_are_changerooted () {
fi fi
} }
function no_kernel_update_in_iso () { function uefi_or_bios () {
#1.1 #1.1
local part_count_linux part_count_efi
# Select disks with at least one partition. Among them count how many
# with the given partition type code we have.
part_count_linux="$(get_partitions | jq --raw-output '[.[][] | select(.children | length > 0) | .children[] | select(.parttype=="'"${partition_types[mbr_boot]}"'") | .path] | length')"
part_count_efi="$(get_partitions | jq --raw-output '[.[][] | select(.children | length > 0) | .children[] | select(.parttype=="'"${partition_types[gpt_efi]}"'") | .path] | length')"
if [[ "${part_count_linux}" -eq '1' ]] && [[ "${part_count_efi}" -eq '0' ]]; then
part_schema='mbr'
>&3 printf -- '%s\n' \
'Treating this as an MBR/legacy BIOS machine ...'
elif [[ "${part_count_linux}" -eq '0' ]] && [[ "${part_count_efi}" -eq '1' ]]; then
part_schema='gpt'
>&3 printf -- '%s\n' \
'Treating this as a GPT/UEFI machine ...'
else
>&3 printf -- '%s\n' \
'We are seeing partitions as follows:' \
'- Partition type code '"${partition_types[mbr_boot]}"': '"${part_count_linux}" \
'- Partition type code '"${partition_types[gpt_efi]}"': '"${part_count_efi}" \
'' \
'We are instead expecting either 1 and 0 indicating a legacy' \
'BIOS setup or 0 and 1 indicating UEFI. '"${part_count_linux}"' and '"${part_count_efi}"' is' \
'neither. Cowardly exiting ...'
exit 77
fi
}
function no_kernel_update_in_iso () {
#1.2
sed -ri -e 's'$'\x1''#(IgnorePkg)[^\r\n\f]+'$'\x1''\1 = linux linux-headers'$'\x1''g' /etc/pacman.conf sed -ri -e 's'$'\x1''#(IgnorePkg)[^\r\n\f]+'$'\x1''\1 = linux linux-headers'$'\x1''g' /etc/pacman.conf
} }
function set_ntp () { function set_ntp () {
#1.2 #1.3
timedatectl set-ntp true timedatectl set-ntp true
} }
function resize_cow_space () { function resize_cow_space () {
#1.3 #1.4
mount -o remount,size='50%' /run/archiso/cowspace mount -o remount,size='50%' /run/archiso/cowspace
} }
function update_pacman_db () { function update_pacman_db () {
#1.4 #1.5
printf -- '%s\n' 'Refreshing mirror list ...' printf -- '%s\n' 'Refreshing mirror list ...'
systemctl start reflector systemctl start reflector
# In an ISO and for the minimal number of packages we need we do not # In an ISO and for the minimal number of packages we need we do not
@ -63,13 +97,13 @@ function update_pacman_db () {
} }
function install_pkgs () { function install_pkgs () {
#1.5 #1.6
printf -- '%s\n' 'Installing packages ...' printf -- '%s\n' 'Installing packages ...'
pacman -S --needed --noconfirm "${@}" pacman -S --needed --noconfirm "${@}"
} }
function install_zfs () { function install_zfs () {
#1.6 #1.7
declare reset_colors='\033[0m' declare reset_colors='\033[0m'
curl -s 'https://raw.githubusercontent.com/eoli3n/archiso-zfs/master/init' | bash curl -s 'https://raw.githubusercontent.com/eoli3n/archiso-zfs/master/init' | bash
printf -- "${reset_colors}" printf -- "${reset_colors}"
@ -256,7 +290,7 @@ function export_pool () {
} }
function setup_zpool () { function setup_zpool () {
#1.7 #1.8
local drive_by_id local drive_by_id
zpool_drive="$(select_part 'zfs')" zpool_drive="$(select_part 'zfs')"
drive_by_id="$(get_drive_id "${zpool_drive}")" drive_by_id="$(get_drive_id "${zpool_drive}")"
@ -276,7 +310,7 @@ function setup_zpool () {
} }
function mount_system () { function mount_system () {
#1.8 #1.9
zfs mount "${zpool_name}"'/root/'"${zfs_arch_dataset_name}" zfs mount "${zpool_name}"'/root/'"${zfs_arch_dataset_name}"
zfs mount -a zfs mount -a
@ -289,7 +323,7 @@ function mount_system () {
} }
function copy_zpool_cache () { function copy_zpool_cache () {
#1.9 #1.10
mkdir -p '/mnt/etc/zfs' mkdir -p '/mnt/etc/zfs'
zpool set 'cachefile=/etc/zfs/'"${zpool_name}"'.cache' "${zpool_name}" zpool set 'cachefile=/etc/zfs/'"${zpool_name}"'.cache' "${zpool_name}"
} }
@ -309,7 +343,7 @@ function pacman_dont_check_space () {
} }
function install_archlinux () { function install_archlinux () {
#1.10 #1.11
pacman_dl_parallel pacman_dl_parallel
pacman_dont_check_space pacman_dont_check_space
pacstrap /mnt \ pacstrap /mnt \
@ -336,7 +370,7 @@ function install_archlinux () {
} }
function gen_fstab () { function gen_fstab () {
#1.11 #1.12
genfstab -U /mnt | grep -v "${zpool_name}" | tr -s '\n' | sed -r -e 's/\/mnt//' -e '/./,$!d' > '/mnt/etc/fstab' genfstab -U /mnt | grep -v "${zpool_name}" | tr -s '\n' | sed -r -e 's/\/mnt//' -e '/./,$!d' > '/mnt/etc/fstab'
} }
@ -349,7 +383,7 @@ EOF
} }
function set_hostname () { function set_hostname () {
#1.12 #1.13
declare new_hostname declare new_hostname
install_pkgs 'pwgen' install_pkgs 'pwgen'
new_hostname="$(pwgen --no-numerals --no-capitalize --ambiguous 8)" new_hostname="$(pwgen --no-numerals --no-capitalize --ambiguous 8)"
@ -358,7 +392,7 @@ function set_hostname () {
} }
function set_locale () { function set_locale () {
#1.13 #1.14
printf -- '%s\n' \ printf -- '%s\n' \
'KEYMAP=de-latin1' \ 'KEYMAP=de-latin1' \
'FONT=Lat2-Terminus16' \ 'FONT=Lat2-Terminus16' \
@ -369,7 +403,7 @@ function set_locale () {
} }
function add_zfs_hook_to_initramfs () { function add_zfs_hook_to_initramfs () {
#1.14 #1.15
# Add zfs hook, remove fsck hook from initramfs. # Add zfs hook, remove fsck hook from initramfs.
sed -ri \ sed -ri \
-e 's'$'\x1''(HOOKS=)(.*?[\(| ])(filesystems)([\)| ][^\r\n\f]*)'$'\x1''\1\2zfs \3\4'$'\x1''g' \ -e 's'$'\x1''(HOOKS=)(.*?[\(| ])(filesystems)([\)| ][^\r\n\f]*)'$'\x1''\1\2zfs \3\4'$'\x1''g' \
@ -384,7 +418,7 @@ function add_zfs_hook_to_initramfs () {
} }
function set_initramfs_build_list () { function set_initramfs_build_list () {
#1.15 #1.16
# No need to build fallback initramfs, our new fallback is ZFS snapshots # No need to build fallback initramfs, our new fallback is ZFS snapshots
sed -ri \ sed -ri \
-e '/^#/d' \ -e '/^#/d' \
@ -398,7 +432,7 @@ function set_initramfs_build_list () {
} }
function add_zfs_files_to_new_os () { function add_zfs_files_to_new_os () {
#1.16 #1.17
for zfs_file in '/etc/hostid' '/etc/zfs/zpool.cache' $([[ ! "${ARCHZBM_ZFSPROPS_NO_ENCRYPTION}" ]] && printf -- '%s' '/etc/zfs/'"${zpool_name}"'.key'); do for zfs_file in '/etc/hostid' '/etc/zfs/zpool.cache' $([[ ! "${ARCHZBM_ZFSPROPS_NO_ENCRYPTION}" ]] && printf -- '%s' '/etc/zfs/'"${zpool_name}"'.key'); do
rsync -av --itemize-changes {'','/mnt'}"${zfs_file}" rsync -av --itemize-changes {'','/mnt'}"${zfs_file}"
done done
@ -571,7 +605,11 @@ Kernel:
CommandLine: ro loglevel=0 zbm.import_policy=hostid CommandLine: ro loglevel=0 zbm.import_policy=hostid
Prefix: vmlinuz Prefix: vmlinuz
EOF EOF
# Up here maybe 'ro quiet' instead of 'ro' # Up here maybe 'ro quiet' instead of 'ro'. This is ZFSBootMenu's kernel
# command line.
# Assign cmdline for final kernel start. This is our Arch Linx kernel
# command line.
zfs set org.zfsbootmenu:commandline='rw nowatchdog rd.vconsole.keymap=de-latin1' "${zpool_name}"'/root/'"${zfs_arch_dataset_name}" zfs set org.zfsbootmenu:commandline='rw nowatchdog rd.vconsole.keymap=de-latin1' "${zpool_name}"'/root/'"${zfs_arch_dataset_name}"
} }
@ -752,22 +790,23 @@ function main () {
if we_are_changerooted; then if we_are_changerooted; then
install_os_in_chroot #2.2 install_os_in_chroot #2.2
else else
no_kernel_update_in_iso #1.1 uefi_or_bios #1.1
set_ntp #1.2 no_kernel_update_in_iso #1.2
resize_cow_space #1.3 set_ntp #1.3
update_pacman_db #1.4 resize_cow_space #1.4
install_pkgs 'jq' #1.5 update_pacman_db #1.5
install_zfs #1.6 install_pkgs 'jq' #1.6
setup_zpool #1.7 install_zfs #1.7
mount_system #1.8 setup_zpool #1.8
copy_zpool_cache #1.9 mount_system #1.9
install_archlinux #1.10 copy_zpool_cache #1.10
gen_fstab #1.11 install_archlinux #1.11
set_hostname #1.12 gen_fstab #1.12
set_locale #1.13 set_hostname #1.13
add_zfs_hook_to_initramfs #1.14 set_locale #1.14
set_initramfs_build_list #1.15 add_zfs_hook_to_initramfs #1.15
add_zfs_files_to_new_os #1.16 set_initramfs_build_list #1.16
add_zfs_files_to_new_os #1.17
enter_chroot #2.1 enter_chroot #2.1
# We're done in chroot # We're done in chroot
finalize_os_setup #3.1 finalize_os_setup #3.1