modules.d/06dbus-daemon/module-setup.sh

   1 #!/bin/bash
   2 # This file is part of dracut.
   3 # SPDX-License-Identifier: GPL-2.0-or-later
   4
   5 # Prerequisite check(s) for module.
   6 check() {
   7
   8     # If the binary(s) requirements are not fulfilled the module can't be installed
   9     require_binaries busctl || return 1
  10     require_binaries dbus-daemon || return 1
  11     require_binaries dbus-send || return 1
  12
  13     # Return 255 to only include the module, if another module requires it.
  14     return 255
  15 }
  16
  17 # Module dependency requirements.
  18 depends() {
  19
  20     # This module has external dependency on the systemd module.
  21     echo systemd
  22     # Return 0 to include the dependent systemd module in the initramfs.
  23     return 0
  24 }
  25
  26 # Install the required file(s) and directories for the module in the initramfs.
  27 install() {
  28     # dbus conflicts with dbus-broker.
  29     if dracut_module_included "dbus-broker"; then
  30         derror "dbus conflicts with dbus-broker in the initramfs."
  31         return 1
  32     fi
  33
  34     # Create dbus related directories.
  35     inst_dir "$dbus"
  36     inst_dir "$dbusinterfaces"
  37     inst_dir "$dbusservices"
  38     inst_dir "$dbussession"
  39     inst_dir "$dbussystem"
  40     inst_dir "$dbussystemservices"
  41     inst_dir "$dbusconfdir"
  42     inst_dir "$dbusinterfacesconfdir"
  43     inst_dir "$dbusservicesconfdir"
  44     inst_dir "$dbussessionconfdir"
  45     inst_dir "$dbussystemconfdir"
  46     inst_dir "$dbussystemservicesconfdir"
  47
  48     inst_multiple -o \
  49         "$dbus"/system.conf \
  50         "$dbussystem"/org.freedesktop.systemd1.conf \
  51         "$dbusservicesconfdir"/org.freedesktop.systemd1.service \
  52         "$dbussystemservices"/org.freedesktop.systemd1.service \
  53         "$systemdsystemunitdir"/dbus.service \
  54         "$systemdsystemunitdir"/dbus.socket \
  55         "$systemdsystemunitdir"/dbus.target.wants \
  56         busctl dbus-send dbus-daemon
  57
  58     # Adjusting dependencies for initramfs in the dbus service unit.
  59     # shellcheck disable=SC1004
  60     sed -i -e \
  61         '/^\[Unit\]/aDefaultDependencies=no\
  62         Conflicts=shutdown.target\
  63         Before=shutdown.target' \
  64         "$initdir$systemdsystemunitdir/dbus.service"
  65
  66     # Adjusting dependencies for initramfs in the dbus socket unit.
  67     # shellcheck disable=SC1004
  68     sed -i -e \
  69         '/^\[Unit\]/aDefaultDependencies=no\
  70         Conflicts=shutdown.target\
  71         Before=shutdown.target
  72         /^\[Socket\]/aRemoveOnStop=yes' \
  73         "$initdir$systemdsystemunitdir/dbus.socket"
  74
  75     # Adding the user and group for dbus
  76     grep '^\(d\|message\)bus:' "$dracutsysrootdir"/etc/passwd >> "$initdir/etc/passwd"
  77     grep '^\(d\|message\)bus:' "$dracutsysrootdir"/etc/group >> "$initdir/etc/group"
  78
  79     # Install the hosts local user configurations if enabled.
  80     if [[ $hostonly ]]; then
  81         inst_multiple -H -o \
  82             "$dbusconfdir"/system.conf \
  83             "$systemdsystemconfdir"/dbus.socket \
  84             "$systemdsystemconfdir"/dbus.socket.d/*.conf \
  85             "$systemdsystemconfdir"/dbus.service \
  86             "$systemdsystemconfdir"/dbus.service.d/*.conf
  87     fi
  88
  89     # We need to make sure that systemd-tmpfiles-setup.service->dbus.socket
  90     # will not wait for local-fs.target to start if swap is encrypted,
  91     # this would make dbus wait the timeout for the swap before loading.
  92     # This could delay sysinit services that are dependent on dbus.service.
  93     sed -i -Ee \
  94         '/^After/s/(After[[:space:]]*=.*)(local-fs.target[[:space:]]*)(.*)/\1-\.mount \3/' \
  95         "$initdir$systemdsystemunitdir/systemd-tmpfiles-setup.service"
  96 }