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/$2.conf"
  59 }
  60
  61 build() {
  62     local rules unit
  63
  64     add_binary /usr/bin/kmod /usr/bin/modprobe
  65     add_binary /usr/bin/mount
  66     add_binary /usr/bin/sulogin
  67     add_binary /usr/bin/umount
  68     add_binary /usr/lib/systemd/systemd /init
  69
  70     map add_binary \
  71         /usr/bin/journalctl \
  72         /usr/bin/systemd-tmpfiles \
  73         /usr/lib/systemd/systemd-hibernate-resume \
  74         /usr/lib/systemd/systemd-shutdown \
  75         /usr/lib/systemd/systemd-sulogin-shell \
  76         /usr/lib/systemd/system-generators/systemd-fstab-generator \
  77         /usr/lib/systemd/system-generators/systemd-gpt-auto-generator \
  78         /usr/lib/systemd/system-generators/systemd-hibernate-resume-generator
  79
  80     # udev rules and systemd units
  81     map add_udev_rule "$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     map add_systemd_unit \
  89             initrd-cleanup.service \
  90             initrd-fs.target \
  91             initrd-parse-etc.service \
  92             initrd-root-fs.target \
  93             initrd-root-device.target \
  94             initrd-switch-root.service \
  95             initrd-switch-root.target \
  96             initrd-udevadm-cleanup-db.service \
  97             initrd.target \
  98             kmod-static-nodes.service \
  99             local-fs.target \
 100             local-fs-pre.target \
 101             paths.target \
 102             reboot.target \
 103             slices.target \
 104             sockets.target \
 105             swap.target \
 106             systemd-fsck@.service \
 107             systemd-hibernate-resume@.service \
 108             systemd-journald.service \
 109             systemd-journald-audit.socket \
 110             systemd-journald-dev-log.socket \
 111             systemd-modules-load.service \
 112             systemd-tmpfiles-setup-dev.service \
 113             systemd-udev-trigger.service \
 114             systemd-udevd-control.socket \
 115             systemd-udevd-kernel.socket \
 116             systemd-udevd.service \
 117             timers.target \
 118             rescue.target \
 119             emergency.target
 120
 121     add_symlink "/usr/lib/systemd/system/default.target" "initrd.target"
 122     add_symlink "/usr/lib/systemd/system/ctrl-alt-del.target" "reboot.target"
 123
 124     add_binary "$(readlink -f /usr/lib/libnss_files.so)"
 125     printf '%s\n' >"$BUILDROOT/etc/nsswitch.conf" \
 126         'passwd: files' \
 127         'group: files' \
 128         'shadow: files'
 129
 130     echo "root:x:0:0:root:/root:/bin/sh" >"$BUILDROOT/etc/passwd"
 131     echo 'root:*:::::::' >"$BUILDROOT/etc/shadow"
 132     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"
 133
 134     add_dir "/etc/modules-load.d"
 135     (
 136       . "$_f_config"
 137       set -f
 138       printf '%s\n' ${MODULES[@]} >"$BUILDROOT/etc/modules-load.d/MODULES.conf"
 139     )
 140 }
 141
 142 help() {
 143     cat <<HELPEOF
 144 This will install a basic systemd setup in your initramfs, and is meant to
 145 replace the 'base', 'usr', 'udev' and 'resume' hooks. Other hooks with runtime
 146 components will need to be ported, and will not work as intended. You also may
 147 wish to still include the 'base' hook (before this hook) to ensure that a
 148 rescue shell exists on your initramfs.
 149 HELPEOF
 150 }
 151
 152 # vim: set ft=sh ts=4 sw=4 et: