summarylogtreecommitdiffstats
path: root/initcpio-install-systemd
diff options
context:
space:
mode:
authorRanieri Althoff2019-11-06 16:42:05 -0300
committerRanieri Althoff2019-11-06 21:01:11 -0300
commit72313ffd52f59617a9285dc403e4b8e40e5e952a (patch)
treecb87763f6d888603bc8381967cc9fb6aec7f9eb9 /initcpio-install-systemd
downloadaur-72313ffd52f59617a9285dc403e4b8e40e5e952a.tar.gz
Initial commit
Diffstat (limited to 'initcpio-install-systemd')
-rw-r--r--initcpio-install-systemd202
1 files changed, 202 insertions, 0 deletions
diff --git a/initcpio-install-systemd b/initcpio-install-systemd
new file mode 100644
index 00000000000..8fb4441f7c7
--- /dev/null
+++ b/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: