sys-kernel/mkinitcpio/files/initcpio-install-systemd

   1 #!/bin/bash
   2
   3 add_udev_rule() {
   4     # Add an udev rules file to the initcpio image. Dependencies on binaries
   5     # will be discovered and added.
   6     #   $1: path to rules file (or name of rules file)
   7
   8     local rules="$1" rule= key= value= binary=
   9
  10     if [[ ${rules:0:1} != '/' ]]; then
  11         rules=$(PATH=/usr/lib/udev/rules.d:/lib/udev/rules.d type -P "$1")
  12     fi
  13     if [[ -z $rules ]]; then
  14         # complain about not found rules
  15         return 1
  16     fi
  17
  18     add_file "$rules" /usr/lib/udev/rules.d/"${rules##*/}"
  19
  20     while IFS=, read -ra rule; do
  21         # skip empty lines, comments
  22         [[ -z $rule || $rule = @(+([[:space:]])|#*) ]] && continue
  23
  24         for pair in "${rule[@]}"; do
  25             IFS=' =' read -r key value <<< "$pair"
  26             case $key in
  27                 RUN@({program}|+)|IMPORT{program}|ENV{REMOVE_CMD})
  28                     # strip quotes
  29                     binary=${value//[\"\']/}
  30                     # just take the first word as the binary name
  31                     binary=${binary%% *}
  32                     [[ ${binary:0:1} == '$' ]] && continue
  33                     if [[ ${binary:0:1} != '/' ]]; then
  34                         binary=$(PATH=/usr/lib/udev:/lib/udev type -P "$binary")
  35                     fi
  36                     add_binary "$binary"
  37                     ;;
  38             esac
  39         done
  40     done <"$rules"
  41 }
  42
  43 add_systemd_unit() {
  44     # Add a systemd unit file to the initcpio image. Hard dependencies on binaries
  45     # and other unit files will be discovered and added.
  46     #   $1: path to rules file (or name of rules file)
  47
  48     local unit= rule= entry= key= value= binary= dep=
  49
  50     unit=$(PATH=/usr/lib/systemd/system:/lib/systemd/system:/usr/lib64/systemd/system:/lib64/systemd/system type -P "$1")
  51     if [[ -z $unit ]]; then
  52         # complain about not found unit file
  53         return 1
  54     fi
  55
  56     add_file "$unit"
  57
  58     while IFS='=' read -r key values; do
  59         read -ra values <<< "$values"
  60
  61         case $key in
  62             Requires|OnFailure)
  63                 # only add hard dependencies (not Wants)
  64                 map add_systemd_unit "${values[@]}"
  65                 ;;
  66             Exec*)
  67                 # do not add binaries unless they are required,
  68                 # strip special executable prefixes
  69                 case ${values[0]} in
  70                     -*)  ;;
  71                     !!*) add_binary "${values[0]#!!}" ;;
  72                     *)   add_binary "${values[0]#[@!:+]}" ;;
  73                 esac
  74                 ;;
  75         esac
  76
  77     done <"$unit"
  78
  79     # preserve reverse soft dependency
  80     for dep in {/usr,}/lib/systemd/system/*.wants/${unit##*/}; do
  81         if [[ -L $dep ]]; then
  82             add_symlink "$dep"
  83         fi
  84     done
  85
  86     # add hard dependencies
  87     if [[ -d $unit.requires ]]; then
  88         for dep in "$unit".requires/*; do
  89             add_systemd_unit ${dep##*/}
  90         done
  91     fi
  92 }
  93
  94 add_systemd_drop_in() {
  95     local unit=$1 dropin_name=$2
  96
  97     mkdir -p "$BUILDROOT/etc/systemd/system/$unit.d"
  98     cat >"$BUILDROOT/etc/systemd/system/$unit.d/$2.conf"
  99 }
 100
 101 build() {
 102     local rules unit
 103
 104     local libdir
 105
 106     if [ -e /usr/lib64 ] ; then
 107         libdir="lib64"
 108     else
 109         libdir="lib"
 110     fi
 111
 112     add_binary /usr/lib/initcpio/busybox /usr/bin/busybox
 113     add_symlink "/bin" /usr/bin
 114
 115     for applet in $(/usr/lib/initcpio/busybox --list | grep -v busybox); do
 116         add_symlink "/usr/bin/$applet" /usr/bin/busybox
 117     done
 118
 119     add_binary /usr/bin/sulogin
 120     add_binary /usr/lib/systemd/systemd /init
 121     add_file /etc/os-release
 122     add_file /etc/machine-id
 123     add_file /etc/machine-info
 124
 125     map add_binary \
 126         /usr/bin/systemd-tmpfiles \
 127         /usr/lib/systemd/systemd-executor \
 128         /usr/lib/systemd/systemd-hibernate-resume \
 129         /usr/lib/systemd/systemd-shutdown \
 130         /usr/lib/systemd/systemd-sulogin-shell \
 131         /usr/lib/systemd/system-generators/systemd-fstab-generator \
 132         /usr/lib/systemd/system-generators/systemd-gpt-auto-generator \
 133         /usr/lib/systemd/system-generators/systemd-hibernate-resume-generator
 134
 135     # udev rules and systemd units
 136     map add_udev_rule "$rules" \
 137             50-udev-default.rules \
 138             60-persistent-storage.rules \
 139             64-btrfs.rules \
 140             80-drivers.rules \
 141             99-systemd.rules
 142
 143     map add_systemd_unit \
 144             initrd-cleanup.service \
 145             initrd-fs.target \
 146             initrd-parse-etc.service \
 147             initrd-root-fs.target \
 148             initrd-root-device.target \
 149             initrd-switch-root.service \
 150             initrd-switch-root.target \
 151             initrd.target \
 152             local-fs.target \
 153             local-fs-pre.target \
 154             paths.target \
 155             reboot.target \
 156             slices.target \
 157             sockets.target \
 158             systemd-fsck@.service \
 159             systemd-hibernate-resume@.service \
 160             systemd-modules-load.service \
 161             systemd-udev-trigger.service \
 162             systemd-udevd-control.socket \
 163             systemd-udevd-kernel.socket \
 164             systemd-udevd.service \
 165             timers.target \
 166             rescue.target \
 167             emergency.target
 168
 169     add_symlink "/usr/lib/systemd/system/default.target" "initrd.target"
 170     add_symlink "/usr/lib/systemd/system/ctrl-alt-del.target" "reboot.target"
 171
 172     add_binary "$(readlink -f /usr/$libdir/libnss_files.so.2)"
 173     add_binary "$(readlink -f /usr/$libdir/libnss_systemd.so.2)"
 174     printf '%s\n' >"$BUILDROOT/etc/nsswitch.conf" \
 175         'passwd: files systemd' \
 176         'group: files [SUCCESS=merge] systemd' \
 177         'shadow: files [UNAVAIL=return] systemd'
 178
 179     echo "root:x:0:0:root:/root:/bin/sh" >"$BUILDROOT/etc/passwd"
 180     echo 'root::18684::::::' >"$BUILDROOT/etc/shadow"
 181     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"
 182
 183     for sysuserfile in $(ls /usr/lib/sysusers.d/) ; do
 184         add_file /usr/lib/sysusers.d/${sysuserfile}
 185     done
 186
 187     add_dir "/etc/modules-load.d"
 188     (
 189       . "$_f_config"
 190       set -f
 191       printf '%s\n' ${MODULES[@]} >"$BUILDROOT/etc/modules-load.d/MODULES.conf"
 192     )
 193
 194     add_dir /etc/systemd
 195     echo -e "[Manager]\\nDefaultStandardOutput=inherit" > $BUILDROOT/etc/systemd/system.conf
 196 }
 197
 198 help() {
 199     cat <<HELPEOF
 200 This will install a basic systemd setup in your initramfs, and is meant to
 201 replace the 'base', 'usr', 'udev' and 'resume' hooks. Other hooks with runtime
 202 components will need to be ported, and will not work as intended. You also may
 203 wish to still include the 'base' hook (before this hook) to ensure that a
 204 rescue shell exists on your initramfs.
 205 HELPEOF
 206 }
 207
 208 # vim: set ft=sh ts=4 sw=4 et: