diff options
Diffstat (limited to 'libre-testing/systemd/initcpio-install-systemd')
| -rw-r--r-- | libre-testing/systemd/initcpio-install-systemd | 202 |
1 files changed, 202 insertions, 0 deletions
diff --git a/libre-testing/systemd/initcpio-install-systemd b/libre-testing/systemd/initcpio-install-systemd new file mode 100644 index 000000000..8fb4441f7 --- /dev/null +++ b/libre-testing/systemd/initcpio-install-systemd @@ -0,0 +1,202 @@ +#!/bin/bash + +strip_quotes() { + local len=${#1} quotes=$'[\'"]' str=${!1} + + if [[ ${str:0:1} = ${str: -1} && ${str:0:1} = $quotes ]]; then + printf -v "$1" %s "${str:1:-1}" + fi +} + +add_udev_rule() { + # Add an udev rules file to the initcpio image. Dependencies on binaries + # will be discovered and added. + # $1: path to rules file (or name of rules file) + + local rules= rule= key= value= binary= + + rules=$(PATH=/usr/lib/udev/rules.d:/lib/udev/rules.d type -P "$1") + if [[ -z $rules ]]; then + # complain about not found rules + return 1 + fi + + add_file "$rules" + + while IFS=, read -ra rule; do + # skip empty lines, comments + [[ -z $rule || $rule = @(+([[:space:]])|#*) ]] && continue + + for pair in "${rule[@]}"; do + IFS=' =' read -r key value <<< "$pair" + case $key in + RUN@({program}|+)|IMPORT{program}|ENV{REMOVE_CMD}) + strip_quotes 'value' + # just take the first word as the binary name + binary=${value%% *} + [[ ${binary:0:1} == '$' ]] && continue + if [[ ${binary:0:1} != '/' ]]; then + binary=$(PATH=/usr/lib/udev:/lib/udev type -P "$binary") + fi + add_binary "$binary" + ;; + esac + done + done <"$rules" +} + +add_systemd_unit() { + # Add a systemd unit file to the initcpio image. Hard dependencies on binaries + # and other unit files will be discovered and added. + # $1: path to rules file (or name of rules file) + + local unit= rule= entry= key= value= binary= dep= + + unit=$(PATH=/usr/lib/systemd/system:/lib/systemd/system type -P "$1") + if [[ -z $unit ]]; then + # complain about not found unit file + return 1 + fi + + add_file "$unit" + + while IFS='=' read -r key values; do + read -ra values <<< "$values" + + case $key in + Requires|OnFailure) + # only add hard dependencies (not Wants) + map add_systemd_unit "${values[@]}" + ;; + Exec*) + # don't add binaries unless they are required + if [[ ${values[0]:0:1} != '-' ]]; then + add_binary "${values[0]}" + fi + ;; + esac + + done <"$unit" + + # preserve reverse soft dependency + for dep in {/usr,}/lib/systemd/system/*.wants/${unit##*/}; do + if [[ -L $dep ]]; then + add_symlink "$dep" + fi + done + + # add hard dependencies + if [[ -d $unit.requires ]]; then + for dep in "$unit".requires/*; do + add_systemd_unit ${dep##*/} + done + fi +} + +add_systemd_drop_in() { + local unit=$1 dropin_name=$2 + + mkdir -p "$BUILDROOT/etc/systemd/system/$unit.d" + cat >"$BUILDROOT/etc/systemd/system/$unit.d/$2.conf" +} + +build() { + local rules unit + + # from base + add_binary /bin/mount + add_binary /usr/bin/kmod /usr/bin/modprobe + add_binary /usr/lib/systemd/systemd /init + add_binary /usr/bin/sulogin + + map add_binary \ + /usr/bin/systemd-tmpfiles \ + /usr/lib/systemd/systemd-hibernate-resume \ + /usr/lib/systemd/systemd-shutdown \ + /usr/lib/systemd/systemd-sulogin-shell \ + /usr/lib/systemd/system-generators/systemd-fstab-generator \ + /usr/lib/systemd/system-generators/systemd-gpt-auto-generator \ + /usr/lib/systemd/system-generators/systemd-hibernate-resume-generator + + # for journalctl in emergency shell + add_binary journalctl + + # udev rules and systemd units + map add_udev_rule "$rules" \ + 50-udev-default.rules \ + 60-persistent-storage.rules \ + 64-btrfs.rules \ + 80-drivers.rules \ + 99-systemd.rules + + map add_systemd_unit \ + initrd-cleanup.service \ + initrd-fs.target \ + initrd-parse-etc.service \ + initrd-root-fs.target \ + initrd-root-device.target \ + initrd-switch-root.service \ + initrd-switch-root.target \ + initrd-udevadm-cleanup-db.service \ + initrd.target \ + kmod-static-nodes.service \ + local-fs.target \ + local-fs-pre.target \ + paths.target \ + reboot.target \ + slices.target \ + sockets.target \ + swap.target \ + systemd-fsck@.service \ + systemd-hibernate-resume@.service \ + systemd-journald.service \ + systemd-journald-audit.socket \ + systemd-journald-dev-log.socket \ + systemd-modules-load.service \ + systemd-tmpfiles-setup-dev.service \ + systemd-udev-trigger.service \ + systemd-udevd-control.socket \ + systemd-udevd-kernel.socket \ + systemd-udevd.service \ + timers.target \ + rescue.target \ + emergency.target + + add_symlink "/usr/lib/systemd/system/default.target" "initrd.target" + add_symlink "/usr/lib/systemd/system/ctrl-alt-del.target" "reboot.target" + + add_binary "$(readlink -f /usr/lib/libnss_files.so)" + printf '%s\n' >"$BUILDROOT/etc/nsswitch.conf" \ + 'passwd: files' \ + 'group: files' \ + 'shadow: files' + + echo "root:x:0:0:root:/:/bin/sh" >"$BUILDROOT/etc/passwd" + echo "root:x:0:root" >"$BUILDROOT/etc/group" + echo "root::::::::" >"$BUILDROOT/etc/shadow" + + add_systemd_drop_in systemd-udevd.service resolve-names <<EOF +[Service] +ExecStart= +ExecStart=/usr/lib/systemd/systemd-udevd --resolve-names=never +EOF + + add_dir "/etc/modules-load.d" + ( + . "$_f_config" + set -f + printf '%s\n' ${MODULES[@]} >"$BUILDROOT/etc/modules-load.d/MODULES.conf" + ) +} + +help() { + cat <<HELPEOF +This will install a basic systemd setup in your initramfs, and is meant to +replace the 'base', 'usr', 'udev' and 'resume' hooks. Other hooks with runtime +components will need to be ported, and will not work as intended. You also may +wish to still include the 'base' hook (before this hook) to ensure that a +rescue shell exists on your initramfs. +HELPEOF +} + +# vim: set ft=sh ts=4 sw=4 et: |