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author | James Meyer <james.meyer@operamail.com> | 2014-10-13 17:03:13 (GMT) |
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committer | James Meyer <james.meyer@operamail.com> | 2014-10-13 17:03:13 (GMT) |
commit | 2e7abbab92370a4a99ad68e460c476d02296e665 (patch) | |
tree | 1d6273195dd2c4f2e22d71d26a486cbfaa77052c /build_tools/archiso-19/archiso/initcpio/hooks/archiso | |
parent | 8bef8020a022c52a8d1d4bb373b5c8cdc256284f (diff) | |
download | linhes_dev-2e7abbab92370a4a99ad68e460c476d02296e665.zip |
archiso-19 + configs for linhes iso.
This provides archiso-19 but doesn't install it inside the dev env.
Diffstat (limited to 'build_tools/archiso-19/archiso/initcpio/hooks/archiso')
-rw-r--r-- | build_tools/archiso-19/archiso/initcpio/hooks/archiso | 185 |
1 files changed, 185 insertions, 0 deletions
diff --git a/build_tools/archiso-19/archiso/initcpio/hooks/archiso b/build_tools/archiso-19/archiso/initcpio/hooks/archiso new file mode 100644 index 0000000..4c50566 --- /dev/null +++ b/build_tools/archiso-19/archiso/initcpio/hooks/archiso @@ -0,0 +1,185 @@ +# args: source, newroot, mountpoint +_mnt_fs() { + local img="${1}" + local newroot="${2}" + local mnt="${3}" + local img_fullname="${img##*/}"; + local img_name="${img_fullname%%.*}" + local dm_snap_name="${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 ${ro_dev}) + if [[ "${cowfile_size}" == "100" ]]; then + rw_dev_size=${ro_dev_size} + else + # size calculation done in this way to avoid integer overflow when ro_dev_size is > 10.2G + rw_dev_size=$((ro_dev_size/100*cowfile_size)) + fi + + 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}/${img_name}.cow' as persistent." + dd of="/run/archiso/cowspace/${cow_directory}/${img_name}.cow" count=0 seek=${rw_dev_size} &> /dev/null + fi + else + 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 + msg ":: Creating '/run/archiso/cowspace/${cow_directory}/${img_name}.cow' as non-persistent." + dd of="/run/archiso/cowspace/${cow_directory}/${img_name}.cow" count=0 seek=${rw_dev_size} &> /dev/null + fi + + rw_dev=$(losetup --find --show "/run/archiso/cowspace/${cow_directory}/${img_name}.cow") + echo ${rw_dev} >> /run/archiso/used_block_devices + + echo "0 ${ro_dev_size} snapshot ${ro_dev} ${rw_dev} ${cow_persistent} 8" | dmsetup create ${dm_snap_name} + + _mnt_dev "/dev/mapper/${dm_snap_name}" "${newroot}${mnt}" "-w" + echo $(readlink -f /dev/mapper/${dm_snap_name}) >> /run/archiso/used_block_devices +} + +# args: /path/to/image_file, mountpoint +_mnt_sfs() { + local img="${1}" + local mnt="${2}" + local img_fullname="${img##*/}" + local sfs_dev + + if [[ "${copytoram}" == "y" ]]; then + msg -n ":: Copying squashfs image to RAM..." + 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 ${sfs_dev} >> /run/archiso/used_block_devices + _mnt_dev "${sfs_dev}" "${mnt}" "-r" +} + +# args: device, mountpoint, flags +_mnt_dev() { + local dev="${1}" + local mnt="${2}" + local flg="${3}" + + mkdir -p "${mnt}" + + msg ":: Mounting '${dev}' to '${mnt}'" + + while ! poll_device "${dev}" 30; do + echo "ERROR: '${dev}' device did not show up after 30 seconds..." + echo " Falling back to interactive prompt" + echo " You can try to fix the problem manually, log out when you are finished" + launch_interactive_shell + done + + if mount "${flg}" "${dev}" "${mnt}"; then + msg ":: Device '${dev}' mounted successfully." + else + echo "ERROR; Failed to mount '${dev}'" + echo " Falling back to interactive prompt" + echo " You can try to fix the problem manually, log out when you are finished" + launch_interactive_shell + fi +} + +_verify_checksum() { + local _status + cd "/run/archiso/bootmnt/${archisobasedir}/${arch}" + md5sum -c airootfs.md5 > /tmp/checksum.log 2>&1 + _status=$? + cd "${OLDPWD}" + return ${_status} +} + +run_hook() { + [[ -z "${arch}" ]] && arch="$(uname -m)" + [[ -z "${cowspace_size}" ]] && cowspace_size="75%" + [[ -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/${archisolabel}" + if [[ -z "${cowfile_size}" ]]; then + cowfile_size="100" + else + cowfile_size=${cowfile_size/%} + fi + + if [[ -n "${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" + else + cow_persistent="N" + fi + + [[ -z "${cow_directory}" ]] && cow_directory="persistent_${archisolabel}/${arch}" + + # set mount handler for archiso + mount_handler="archiso_mount_handler" +} + +# This function is called normally from init script, but it can be called +# as chain from other mount handlers. +# args: /path/to/newroot +archiso_mount_handler() { + local newroot="${1}" + + if ! mountpoint -q "/run/archiso/bootmnt"; then + _mnt_dev "${archisodevice}" "/run/archiso/bootmnt" "-r" + if [[ "${copytoram}" != "y" ]]; then + echo $(readlink -f ${archisodevice}) >> /run/archiso/used_block_devices + fi + fi + + if [[ "${checksum}" == "y" ]]; then + if [[ -f "/run/archiso/bootmnt/${archisobasedir}/${arch}/airootfs.md5" ]]; then + msg -n ":: Self-test requested, please wait..." + if _verify_checksum; then + msg "done. Checksum is OK, continue booting." + else + echo "ERROR: one or more files are corrupted" + echo "see /tmp/checksum.log for details" + launch_interactive_shell + fi + else + echo "ERROR: checksum=y option specified but ${archisobasedir}/${arch}/airootfs.md5 not found" + launch_interactive_shell + fi + fi + + 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 + _mnt_dev "${cow_device}" "/run/archiso/cowspace" "-r" + echo $(readlink -f ${cow_device}) >> /run/archiso/used_block_devices + mount -o remount,rw "/run/archiso/cowspace" + else + msg ":: Mounting /run/archiso/cowspace (tmpfs) filesystem, size=${cowspace_size}..." + mkdir -p /run/archiso/cowspace + mount -t tmpfs -o "size=${cowspace_size}",mode=0755 cowspace /run/archiso/cowspace + fi + mkdir -p "/run/archiso/cowspace/${cow_directory}" + + _mnt_sfs "/run/archiso/bootmnt/${archisobasedir}/${arch}/airootfs.sfs" "/run/archiso/sfs/airootfs" + _mnt_fs "/run/archiso/sfs/airootfs/airootfs.img" "${newroot}" "/" + + if [[ "${copytoram}" == "y" ]]; then + umount /run/archiso/bootmnt + fi +} + +# vim:ft=sh:ts=4:sw=4:et: |