systemd/trunk/initcpio-install-systemd

   1 #!/bin/bash
   2
   3 add_systemd_unit() {
   4     # Add a systemd unit file to the initcpio image. Hard dependencies on binaries
   5     # and other unit files will be discovered and added.
   6     #   $1: path to rules file (or name of rules file)
   7
   8     local unit= rule= entry= key= value= binary= dep=
   9
  10     unit=$(PATH=/usr/lib/systemd/system:/lib/systemd/system type -P "$1")
  11     if [[ -z $unit ]]; then
  12         # complain about not found unit file
  13         return 1
  14     fi
  15
  16     add_file "$unit"
  17
  18     while IFS='=' read -r key values; do
  19         read -ra values <<< "$values"
  20
  21         case $key in
  22             Requires|OnFailure)
  23                 # only add hard dependencies (not Wants)
  24                 map add_systemd_unit "${values[@]}"
  25                 ;;
  26             Exec*)
  27                 # do not add binaries unless they are required,
  28                 # strip special executable prefixes
  29                 case ${values[0]} in
  30                     -*)  ;;
  31                     !!*) add_binary "${values[0]#!!}" ;;
  32                     *)   add_binary "${values[0]#[@!:+]}" ;;
  33                 esac
  34                 ;;
  35         esac
  36
  37     done <"$unit"
  38
  39     # preserve reverse soft dependency
  40     for dep in {/usr,}/lib/systemd/system/*.wants/${unit##*/}; do
  41         if [[ -L $dep ]]; then
  42             add_symlink "$dep"
  43         fi
  44     done
  45
  46     # add hard dependencies
  47     if [[ -d $unit.requires ]]; then
  48         for dep in "$unit".requires/*; do
  49             add_systemd_unit ${dep##*/}
  50         done
  51     fi
  52 }
  53
  54 add_systemd_drop_in() {
  55     local unit=$1 dropin_name=$2
  56
  57     mkdir -p "$BUILDROOT/etc/systemd/system/$unit.d"
  58     cat >"$BUILDROOT/etc/systemd/system/$unit.d/$2.conf"
  59 }
  60
  61 build() {
  62     local rules unit
  63
  64     add_binary /usr/bin/kmod /usr/bin/modprobe
  65     add_binary /usr/bin/mount
  66     add_binary /usr/bin/sulogin
  67     add_binary /usr/bin/umount
  68     add_binary /usr/lib/systemd/systemd /init
  69
  70     map add_binary \
  71         /usr/bin/journalctl \
  72         /usr/bin/systemd-tmpfiles \
  73         /usr/lib/systemd/systemd-hibernate-resume \
  74         /usr/lib/systemd/systemd-shutdown \
  75         /usr/lib/systemd/systemd-sulogin-shell \
  76         /usr/lib/systemd/system-generators/systemd-fstab-generator \
  77         /usr/lib/systemd/system-generators/systemd-gpt-auto-generator \
  78         /usr/lib/systemd/system-generators/systemd-hibernate-resume-generator
  79
  80     # udev rules
  81     map add_udev_rule "$rules" \
  82         50-udev-default.rules \
  83         60-persistent-storage.rules \
  84         64-btrfs.rules \
  85         80-drivers.rules \
  86         99-systemd.rules
  87
  88     # systemd units
  89     map add_systemd_unit \
  90         initrd-cleanup.service \
  91         initrd-fs.target \
  92         initrd-parse-etc.service \
  93         initrd-root-fs.target \
  94         initrd-root-device.target \
  95         initrd-switch-root.service \
  96         initrd-switch-root.target \
  97         initrd-udevadm-cleanup-db.service \
  98         initrd.target \
  99         kmod-static-nodes.service \
 100         local-fs.target \
 101         local-fs-pre.target \
 102         paths.target \
 103         reboot.target \
 104         slices.target \
 105         sockets.target \
 106         swap.target \
 107         systemd-fsck@.service \
 108         systemd-hibernate-resume@.service \
 109         systemd-journald-audit.socket \
 110         systemd-journald-dev-log.socket \
 111         systemd-journald.service \
 112         systemd-modules-load.service \
 113         systemd-pcrphase-initrd.service \
 114         systemd-tmpfiles-setup-dev.service \
 115         systemd-udevd-control.socket \
 116         systemd-udevd-kernel.socket \
 117         systemd-udevd.service \
 118         systemd-udev-trigger.service \
 119         timers.target \
 120         rescue.target \
 121         emergency.target
 122
 123     # add libraries dlopen()ed by tpm2-util
 124     for LIB in tss2-{esys,rc,mu,tcti-'*'}; do
 125         for FILE in $(find /usr/lib/ -maxdepth 1 -name "lib${LIB}.so*"); do
 126             if [[ -L "${FILE}" ]]; then
 127                 add_symlink "${FILE}"
 128             else
 129                 add_binary "${FILE}"
 130             fi
 131         done
 132     done
 133
 134     add_symlink "/usr/lib/systemd/system/default.target" "initrd.target"
 135     add_symlink "/usr/lib/systemd/system/ctrl-alt-del.target" "reboot.target"
 136
 137     printf '%s\n' >"$BUILDROOT/etc/nsswitch.conf" \
 138         'passwd: files' \
 139         'group: files' \
 140         'shadow: files'
 141
 142     echo "root:x:0:0:root:/root:/bin/sh" >"$BUILDROOT/etc/passwd"
 143     echo 'root:*:::::::' >"$BUILDROOT/etc/shadow"
 144     getent group root audio disk input kmem kvm lp optical render sgx storage tty uucp video | awk -F: ' { print $1 ":x:" $3 ":" }' >"$BUILDROOT/etc/group"
 145
 146     add_dir "/etc/modules-load.d"
 147     (
 148       . "$_f_config"
 149       set -f
 150       printf '%s\n' ${MODULES[@]} >"$BUILDROOT/etc/modules-load.d/MODULES.conf"
 151     )
 152 }
 153
 154 help() {
 155     cat <<HELPEOF
 156 This will install a basic systemd setup in your initramfs, and is meant to
 157 replace the 'base', 'usr', 'udev' and 'resume' hooks. Other hooks with runtime
 158 components will need to be ported, and will not work as intended. You also may
 159 wish to still include the 'base' hook (before this hook) to ensure that a
 160 rescue shell exists on your initramfs.
 161 HELPEOF
 162 }
 163
 164 # vim: set ft=sh ts=4 sw=4 et: