implement parse_cmdline
This commit is contained in:
illiliti
parent
fc47af17b3
commit
01b30b6633
25
config
25
config
@ -3,7 +3,13 @@
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#
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# debug mode
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#debug=1
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shell_debug=1
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# drop into shell after mnt_rootfs
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#shell_break=0
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# custom init
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#init=""
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# custom output name
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#initramfs=""
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@ -24,8 +30,8 @@ root="UUID=07729c48-25d8-4096-acaf-ce5322915680"
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# change this if you using busybox util-linux
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root_type="ext4"
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# root mount options
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#root_args=""
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# root options
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#root_opts=""
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# disable this if you want to get rid of util-linux
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# NOTE busybox util-linux implemetation doesn't have
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@ -47,12 +53,21 @@ hostonly=1
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# LVM support
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lvm=1
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# LVM logical volume name
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#lvm_name=""
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# LVM volume group name
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#lvm_group=""
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# LVM include config
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#lvm_conf=1
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# LVM issue_discards
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lvm_discard=1
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# LVM parameters
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#lvm_args=""
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# LUKS support
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luks=1
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@ -62,7 +77,7 @@ luks=1
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# LUKS encrypted root ( device,partuuid,uuid,label )
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luks_root="PARTUUID=b04395be-f467-458b-8630-9a429b487600"
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# luks mapper name ( /dev/mapper/<name>)
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# luks mapper name ( /dev/mapper/<name> )
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#luks_name=""
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# LUKS detached header
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@ -74,5 +89,5 @@ luks_root="PARTUUID=b04395be-f467-458b-8630-9a429b487600"
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# LUKS allow_discards
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luks_discard=1
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# LUKS unlock options
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# LUKS parameters
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#luks_args=""
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28
generate
28
generate
@ -95,7 +95,7 @@ parse_fstab() {
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elif [ "$dir" = / ]; then
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root="${root:-$fs}"
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root_type="${root_type:-$type}"
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root_args="${root_args:-$opts}"
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root_opts="${root_opts:-$opts}"
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fi
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done < /etc/fstab
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}
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@ -164,9 +164,6 @@ install_luks() {
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# workaround for luks2
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install -s -m755 /usr/lib/libgcc_s.so.1 -t "${wrkdir}/usr/lib" || msg panic "failed to install LUKS libraries"
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# block discard support
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[ "$luks_discard" = 1 ] && luks_args="--allow-discards $luks_args"
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# copy luks header
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[ -f "$luks_header" ] && {
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install -m400 "$luks_header" "${wrkdir}/root/luks_header" || msg panic "failed to copy LUKS header"
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@ -285,20 +282,9 @@ install_library() {
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install_files() {
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msg info "installing files"
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# FIXME eof broken
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# initialize config
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cat << EOF > "${wrkdir}/config"
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debug="$debug"
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root="$root"
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root_type="$root_type"
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root_args="$root_args"
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devmgr="$devmgr"
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#drivers="$drivers"
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lvm="$lvm"
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luks="$luks"
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luks_root="$luks_root"
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luks_args="$luks_args"
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EOF
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sed -e "/^#/d" -e "/^$/d" ./config > "${wrkdir}/config"
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# needed for devmgr
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cat << EOF > "${wrkdir}/etc/group"
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@ -353,7 +339,7 @@ check_currentdir
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. ./config || msg panic "failed to source config"
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[ "$debug" = 1 ] && {
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[ "$shell_debug" = 1 ] && {
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# debug shell commands
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set -x
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# don't remove anything
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@ -365,7 +351,7 @@ moddir="/lib/modules"
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create_structure
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create_symlinks
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[ "$fstab" = 1 ] && parse_fstab
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[ "$fstab" = 1 ] && [ -f /etc/fstab ] && parse_fstab
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#parse_crypttab
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install_requirements
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@ -384,8 +370,8 @@ case "$devmgr" in
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*) msg panic "devmgr option broken" ;;
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esac
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[ "$luks" = 1 ] && install_luks
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[ "$lvm" = 1 ] && install_lvm
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[ "$luks" = 1 ] && [ -x "$(command -v cryptsetup)" ] && install_luks
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[ "$lvm" = 1 ] && [ -x "$(command -v lvm)" ] && install_lvm
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install_files
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create_initramfs
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71
init
71
init
@ -4,12 +4,43 @@
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panic() {
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printf "panic >> %s\n" "$1"
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# TODO fix job control
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sh -l
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}
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# parse_cmdline() {
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# TODO parse /proc/cmdline
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#}
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parse_cmdline() {
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# store cmdline in variable
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read -r cmdline < /proc/cmdline || panic "failed to parse cmdline"
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# turn variable into list
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set -- $cmdline
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# parse line by line
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for line in "$@"; do
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# parse options
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case "${line%%=*}" in
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init) init="${line##*=}" ;;
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root) root="${line##*=}" ;;
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root.type) root_type="${line##*=}" ;;
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root.opts) root_opts="${line##*=}" ;;
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lvm) lvm="${line##*=}" ;;
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lvm.name) lvm_name="${line##*=}" ;;
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lvm.group) lvm_group="${line##*=}" ;;
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lvm.args) lvm_args="${line##*=}" ;;
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luks) luks="${line##*=}" ;;
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luks.root) luks_root="${line##*=}" ;;
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luks.name) luks_name="${line##*=}" ;;
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luks.discard) luks_discard="${line##*=}" ;;
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luks.args) luks_args="${line##*=}" ;;
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shell.debug) shell_debug="${line##*=}" ;;
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shell.break) shell_break="${line##*=}" ;;
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# TODO implement
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#lvm.discard) ;;
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#lvm.conf) ;;
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#luks_header) ;;
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#luks_keyfile) ;;
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esac
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done
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}
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mnt_pseudofs() {
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mount -t proc none /proc
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@ -31,10 +62,8 @@ setup_mdev() {
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# trigger uevent for usb devices
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for device in /sys/bus/usb/devices/*; do
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case ${device##*/} in
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[0-9]*-[0-9]*)
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printf add > "${device}/uevent"
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;;
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case "${device##*/}" in
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[0-9]*-[0-9]*) printf add > "${device}/uevent" ;;
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esac
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done
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@ -70,22 +99,29 @@ findfs_sh() {
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sleep 0.5
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[ "$increment" ] || increment=0
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increment=$(( increment + 1 ))
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[ "$increment" = 10 ] && panic "failed to lookup rootfs"
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[ "$increment" = 10 ] && panic "failed to lookup partition"
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done
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printf "%s\n" "$device"
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}
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unlock_luks() {
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[ "$luks_discard" = 1 ] && luks_args="--allow-discards $luks_args"
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cryptsetup $luks_args luksOpen $(findfs_sh "$luks_root") ${luks_name:-luks_root} || panic "failed to unlock luks container"
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}
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trigger_lvm() {
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lvm vgchange --quiet --sysinit -a y > /dev/null
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if [ "$lvm_group" ] && [ "$lvm_name" ]; then
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lvm lvchange $lvm_args --quiet --sysinit -a y "${lvm_group}/${lvm_name}" > /dev/null
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elif [ "$lvm_group" ]; then
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lvm vgchange $lvm_args --quiet --sysinit -a y "$lvm_group" > /dev/null
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else
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lvm vgchange $lvm_args --quiet --sysinit -a y > /dev/null
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fi
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}
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mnt_rootfs() {
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mount ${root_type:+-t $root_type} ${root_args:+-o $root_args} $(findfs_sh "$root") /mnt/root || panic "failed to mount rootfs"
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mount ${root_type:+-t $root_type} ${root_opts:+-o $root_opts} $(findfs_sh "$root") /mnt/root || panic "failed to mount rootfs"
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}
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cleanup() {
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@ -100,18 +136,18 @@ cleanup() {
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}
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boot_system() {
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exec switch_root /mnt/root /sbin/init || panic "failed to boot system"
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exec switch_root /mnt/root ${init:-/sbin/init} || panic "failed to boot system"
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}
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/sbin/busybox --install -s
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. /config || panic "failed to source config"
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# debug shell commands
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[ "$debug" = 1 ] && set -x
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#parse_cmdline
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mnt_pseudofs
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parse_cmdline
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# debug mode
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[ "$shell_debug" = 1 ] && set -x
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case "$devmgr" in
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mdev) setup_mdev ;;
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@ -121,8 +157,9 @@ case "$devmgr" in
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esac
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# TODO handle situations when LUKS on LVM
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[ "$luks" = 1 ] && unlock_luks
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[ "$lvm" = 1 ] && trigger_lvm
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[ "$luks" = 1 ] && [ -x "$(command -v cryptsetup)" ] && unlock_luks
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[ "$lvm" = 1 ] && [ -x "$(command -v lvm)" ] && trigger_lvm
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mnt_rootfs
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[ "$shell_break" = 1 ] && panic "dropping to shell"
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cleanup
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boot_system
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