diff options
Diffstat (limited to 'archiso/initcpio/hooks/archiso')
| -rw-r--r-- | archiso/initcpio/hooks/archiso | 115 |
1 files changed, 65 insertions, 50 deletions
diff --git a/archiso/initcpio/hooks/archiso b/archiso/initcpio/hooks/archiso index 5c56561..7f2f9a7 100644 --- a/archiso/initcpio/hooks/archiso +++ b/archiso/initcpio/hooks/archiso @@ -1,3 +1,5 @@ +#!/bin/ash + # args: source, newroot, mountpoint _mnt_dmsnapshot() { local img="${1}" @@ -8,19 +10,19 @@ _mnt_dmsnapshot() { local dm_snap_name="${dm_snap_prefix}_${img_name}" local ro_dev ro_dev_size rw_dev - ro_dev=$(losetup --find --show --read-only "${img}") - echo ${ro_dev} >> /run/archiso/used_block_devices - ro_dev_size=$(blockdev --getsz ${ro_dev}) + ro_dev="$(losetup --find --show --read-only -- "${img}")" + echo "${ro_dev}" >> /run/archiso/used_block_devices + ro_dev_size="$(blockdev --getsz -- "${ro_dev}")" - if [[ "${cow_persistent}" == "P" ]]; then - if [[ -f "/run/archiso/cowspace/${cow_directory}/${img_name}.cow" ]]; then + if [ "${cow_persistent}" = "P" ]; then + if [ -f "/run/archiso/cowspace/${cow_directory}/${img_name}.cow" ]; then msg ":: Found '/run/archiso/cowspace/${cow_directory}/${img_name}.cow', using as persistent." else msg ":: Creating '/run/archiso/cowspace/${cow_directory}/${img_name}.cow' as persistent." truncate -s "${cow_spacesize}" "/run/archiso/cowspace/${cow_directory}/${img_name}.cow" fi else - if [[ -f "/run/archiso/cowspace/${cow_directory}/${img_name}.cow" ]]; then + if [ -f "/run/archiso/cowspace/${cow_directory}/${img_name}.cow" ]; then msg ":: Found '/run/archiso/cowspace/${cow_directory}/${img_name}.cow' but non-persistent requested, removing." rm -f "/run/archiso/cowspace/${cow_directory}/${img_name}.cow" fi @@ -28,17 +30,18 @@ _mnt_dmsnapshot() { truncate -s "${cow_spacesize}" "/run/archiso/cowspace/${cow_directory}/${img_name}.cow" fi - rw_dev=$(losetup --find --show "/run/archiso/cowspace/${cow_directory}/${img_name}.cow") - echo ${rw_dev} >> /run/archiso/used_block_devices + rw_dev="$(losetup --find --show "/run/archiso/cowspace/${cow_directory}/${img_name}.cow")" + echo "${rw_dev}" >> /run/archiso/used_block_devices - dmsetup create ${dm_snap_name} --table "0 ${ro_dev_size} snapshot ${ro_dev} ${rw_dev} ${cow_persistent} ${cow_chunksize}" + dmsetup create "${dm_snap_name}" --table \ + "0 ${ro_dev_size} snapshot ${ro_dev} ${rw_dev} ${cow_persistent} ${cow_chunksize}" - if [[ "${cow_persistent}" != "P" ]]; then + if [ "${cow_persistent}" != "P" ]; then rm -f "/run/archiso/cowspace/${cow_directory}/${img_name}.cow" fi _mnt_dev "/dev/mapper/${dm_snap_name}" "${newroot}${mnt}" "-w" "defaults" - echo $(readlink -f /dev/mapper/${dm_snap_name}) >> /run/archiso/used_block_devices + readlink -f "/dev/mapper/${dm_snap_name}" >> /run/archiso/used_block_devices } # args: source, newroot, mountpoint @@ -46,8 +49,10 @@ _mnt_overlayfs() { local src="${1}" local newroot="${2}" local mnt="${3}" - mkdir -p /run/archiso/cowspace/${cow_directory}/upperdir /run/archiso/cowspace/${cow_directory}/workdir - mount -t overlay -o lowerdir=${src},upperdir=/run/archiso/cowspace/${cow_directory}/upperdir,workdir=/run/archiso/cowspace/${cow_directory}/workdir airootfs "${newroot}${mnt}" + mkdir -p "/run/archiso/cowspace/${cow_directory}/upperdir" "/run/archiso/cowspace/${cow_directory}/workdir" + mount -t overlay -o \ + "lowerdir=${src},upperdir=/run/archiso/cowspace/${cow_directory}/upperdir,workdir=/run/archiso/cowspace/${cow_directory}/workdir" \ + airootfs "${newroot}${mnt}" } @@ -58,17 +63,19 @@ _mnt_sfs() { local img_fullname="${img##*/}" local sfs_dev - if [[ "${copytoram}" == "y" ]]; then + # shellcheck disable=SC2154 + # defined via initcpio's parse_cmdline() + if [ "${copytoram}" = "y" ]; then msg -n ":: Copying squashfs image to RAM..." - if ! cp "${img}" "/run/archiso/copytoram/${img_fullname}" ; then + if ! cp -- "${img}" "/run/archiso/copytoram/${img_fullname}" ; then echo "ERROR: while copy '${img}' to '/run/archiso/copytoram/${img_fullname}'" launch_interactive_shell fi img="/run/archiso/copytoram/${img_fullname}" msg "done." fi - sfs_dev=$(losetup --find --show --read-only "${img}") - echo ${sfs_dev} >> /run/archiso/used_block_devices + sfs_dev="$(losetup --find --show --read-only -- "${img}")" + echo "${sfs_dev}" >> /run/archiso/used_block_devices _mnt_dev "${sfs_dev}" "${mnt}" "-r" "defaults" } @@ -102,45 +109,48 @@ _mnt_dev() { _verify_checksum() { local _status - cd "/run/archiso/bootmnt/${archisobasedir}/${arch}" + cd "/run/archiso/bootmnt/${archisobasedir}/${arch}" || exit 1 sha512sum -c airootfs.sha512 > /tmp/checksum.log 2>&1 _status=$? - cd "${OLDPWD}" - return ${_status} + cd -- "${OLDPWD}" || exit 1 + return "${_status}" } _verify_signature() { local _status - cd "/run/archiso/bootmnt/${archisobasedir}/${arch}" + cd "/run/archiso/bootmnt/${archisobasedir}/${arch}" || exit 1 gpg --homedir /gpg --status-fd 1 --verify airootfs.sfs.sig 2>/dev/null | grep -qE '^\[GNUPG:\] GOODSIG' _status=$? - cd "${OLDPWD}" + cd -- "${OLDPWD}" || exit 1 return ${_status} } run_hook() { - [[ -z "${arch}" ]] && arch="$(uname -m)" - [[ -z "${copytoram_size}" ]] && copytoram_size="75%" - [[ -z "${archisobasedir}" ]] && archisobasedir="arch" - [[ -z "${dm_snap_prefix}" ]] && dm_snap_prefix="arch" - [[ -z "${archisodevice}" ]] && archisodevice="/dev/disk/by-label/${archisolabel}" - [[ -z "${cow_spacesize}" ]] && cow_spacesize="256M" - - if [[ -n "${cow_label}" ]]; then + [ -z "${arch}" ] && arch="$(uname -m)" + [ -z "${copytoram_size}" ] && copytoram_size="75%" + [ -z "${archisobasedir}" ] && archisobasedir="arch" + [ -z "${dm_snap_prefix}" ] && dm_snap_prefix="arch" + # shellcheck disable=SC2154 + # defined via initcpio's parse_cmdline() + [ -z "${archisodevice}" ] && archisodevice="/dev/disk/by-label/${archisolabel}" + [ -z "${cow_spacesize}" ] && cow_spacesize="256M" + # shellcheck disable=SC2154 + # defined via initcpio's parse_cmdline() + if [ -n "${cow_label}" ]; then cow_device="/dev/disk/by-label/${cow_label}" - [[ -z "${cow_persistent}" ]] && cow_persistent="P" - elif [[ -n "${cow_device}" ]]; then - [[ -z "${cow_persistent}" ]] && cow_persistent="P" + [ -z "${cow_persistent}" ] && cow_persistent="P" + elif [ -n "${cow_device}" ]; then + [ -z "${cow_persistent}" ] && cow_persistent="P" else cow_persistent="N" fi - [[ -z "${cow_flags}" ]] && cow_flags="defaults" - [[ -z "${cow_directory}" ]] && cow_directory="persistent_${archisolabel}/${arch}" - [[ -z "${cow_chunksize}" ]] && cow_chunksize="8" + [ -z "${cow_flags}" ] && cow_flags="defaults" + [ -z "${cow_directory}" ] && cow_directory="persistent_${archisolabel}/${arch}" + [ -z "${cow_chunksize}" ] && cow_chunksize="8" # set mount handler for archiso - mount_handler="archiso_mount_handler" + export mount_handler="archiso_mount_handler" } # This function is called normally from init script, but it can be called @@ -151,13 +161,15 @@ archiso_mount_handler() { if ! mountpoint -q "/run/archiso/bootmnt"; then _mnt_dev "${archisodevice}" "/run/archiso/bootmnt" "-r" "defaults" - if [[ "${copytoram}" != "y" ]]; then - echo $(readlink -f ${archisodevice}) >> /run/archiso/used_block_devices + if [ "${copytoram}" != "y" ]; then + readlink -f "${archisodevice}" >> /run/archiso/used_block_devices fi fi - if [[ "${checksum}" == "y" ]]; then - if [[ -f "/run/archiso/bootmnt/${archisobasedir}/${arch}/airootfs.sha512" ]]; then + # shellcheck disable=SC2154 + # defined via initcpio's parse_cmdline() + if [ "${checksum}" = "y" ]; then + if [ -f "/run/archiso/bootmnt/${archisobasedir}/${arch}/airootfs.sha512" ]; then msg -n ":: Self-test requested, please wait..." if _verify_checksum; then msg "done. Checksum is OK, continue booting." @@ -172,8 +184,10 @@ archiso_mount_handler() { fi fi - if [[ "${verify}" == "y" ]]; then - if [[ -f "/run/archiso/bootmnt/${archisobasedir}/${arch}/airootfs.sfs.sig" ]]; then + # shellcheck disable=SC2154 + # defined via initcpio's parse_cmdline() + if [ "${verify}" = "y" ]; then + if [ -f "/run/archiso/bootmnt/${archisobasedir}/${arch}/airootfs.sfs.sig" ]; then msg -n ":: Signature verification requested, please wait..." if _verify_signature; then msg "done. Signature is OK, continue booting." @@ -187,33 +201,34 @@ archiso_mount_handler() { fi fi - if [[ "${copytoram}" == "y" ]]; then + if [ "${copytoram}" = "y" ]; then msg ":: Mounting /run/archiso/copytoram (tmpfs) filesystem, size=${copytoram_size}" mkdir -p /run/archiso/copytoram mount -t tmpfs -o "size=${copytoram_size}",mode=0755 copytoram /run/archiso/copytoram fi - if [[ -n "${cow_device}" ]]; then + if [ -n "${cow_device}" ]; then _mnt_dev "${cow_device}" "/run/archiso/cowspace" "-r" "${cow_flags}" - echo $(readlink -f ${cow_device}) >> /run/archiso/used_block_devices + readlink -f "${cow_device}" >> /run/archiso/used_block_devices mount -o remount,rw "/run/archiso/cowspace" else msg ":: Mounting /run/archiso/cowspace (tmpfs) filesystem, size=${cow_spacesize}..." mkdir -p /run/archiso/cowspace mount -t tmpfs -o "size=${cow_spacesize}",mode=0755 cowspace /run/archiso/cowspace fi - mkdir -p -m 0700 "/run/archiso/cowspace/${cow_directory}" + mkdir -p "/run/archiso/cowspace/${cow_directory}" + chmod 0700 "/run/archiso/cowspace/${cow_directory}" _mnt_sfs "/run/archiso/bootmnt/${archisobasedir}/${arch}/airootfs.sfs" "/run/archiso/sfs/airootfs" - if [[ -f "/run/archiso/sfs/airootfs/airootfs.img" ]]; then + if [ -f "/run/archiso/sfs/airootfs/airootfs.img" ]; then _mnt_dmsnapshot "/run/archiso/sfs/airootfs/airootfs.img" "${newroot}" "/" else _mnt_overlayfs "/run/archiso/sfs/airootfs" "${newroot}" "/" fi - if [[ "${copytoram}" == "y" ]]; then + if [ "${copytoram}" = "y" ]; then umount -d /run/archiso/bootmnt fi } -# vim:ft=sh:ts=4:sw=4:et: +# vim: set ft=sh: |