feat(systemd-udevd): introducing the systemd-udevd module

Introducing the systemd-udevd module

dracut.spec

@@ -335,6 +335,7 @@ echo 'dracut_rescue_image="yes"' > $RPM_BUILD_ROOT%{dracutlibdir}/dracut.conf.d/
 %{dracutlibdir}/modules.d/01systemd-sysusers
 %{dracutlibdir}/modules.d/01systemd-timedated
 %{dracutlibdir}/modules.d/01systemd-timesyncd
+%{dracutlibdir}/modules.d/01systemd-udevd
 %{dracutlibdir}/modules.d/01systemd-veritysetup
 %{dracutlibdir}/modules.d/03modsign
 %{dracutlibdir}/modules.d/03rescue

modules.d/01systemd-udevd/module-setup.sh

@@ -0,0 +1,102 @@
+#!/bin/bash
+# This file is part of dracut.
+# SPDX-License-Identifier: GPL-2.0-or-later
+
+# Prerequisite check(s) for module.
+check() {
+
+    # If the binary(s) requirements are not fulfilled the module can't be installed.
+    require_binaries \
+        udevadm \
+        "$systemdutildir"/systemd-udevd \
+        || return 1
+
+    # Return 255 to only include the module, if another module requires it.
+    return 255
+
+}
+
+# Module dependency requirements.
+depends() {
+
+    # This module has external dependency on other module(s).
+    echo systemd
+    # Return 0 to include the dependent module(s) in the initramfs.
+    return 0
+
+}
+
+# Install the required file(s) and directories for the module in the initramfs.
+install() {
+
+    inst_multiple -o \
+        /usr/lib/udev/hwdb.bin \
+        /usr/lib/udev/udev.conf \
+        /usr/lib/udev/rules.d/50-udev-default.rules \
+        /usr/lib/udev/rules.d/60-autosuspend.rules \
+        /usr/lib/udev/rules.d/60-block.rules \
+        /usr/lib/udev/rules.d/60-cdrom_id.rules \
+        /usr/lib/udev/rules.d/60-drm.rules \
+        /usr/lib/udev/rules.d/60-evdev.rules \
+        /usr/lib/udev/rules.d/60-fido-id.rules \
+        /usr/lib/udev/rules.d/60-input-id.rules \
+        /usr/lib/udev/rules.d/60-persistent-alsa.rules \
+        /usr/lib/udev/rules.d/60-persistent-input.rules \
+        /usr/lib/udev/rules.d/60-persistent-storage-tape.rules \
+        /usr/lib/udev/rules.d/60-persistent-storage.rules \
+        /usr/lib/udev/rules.d/60-persistent-v4l.rules \
+        /usr/lib/udev/rules.d/60-sensor.rules \
+        /usr/lib/udev/rules.d/60-serial.rules \
+        /usr/lib/udev/rules.d/64-btrfs.rules \
+        /usr/lib/udev/rules.d/70-joystick.rules \
+        /usr/lib/udev/rules.d/70-memory.rules \
+        /usr/lib/udev/rules.d/70-mouse.rules \
+        /usr/lib/udev/rules.d/70-touchpad.rules \
+        /usr/lib/udev/rules.d/75-net-description.rules \
+        /usr/lib/udev/rules.d/75-probe_mtd.rules \
+        /usr/lib/udev/rules.d/78-sound-card.rules \
+        /usr/lib/udev/rules.d/80-drivers.rules \
+        /usr/lib/udev/rules.d/80-net-setup-link.rules \
+        /usr/lib/udev/rules.d/81-net-dhcp.rules \
+        /usr/lib/udev/rules.d/99-systemd.rules \
+        "$systemdutildir"/systemd-udevd \
+        "$systemdsystemunitdir"/systemd-udevd.service \
+        "$systemdsystemunitdir/systemd-udevd.service.d/*.conf" \
+        "$systemdsystemunitdir"/systemd-udev-trigger.service \
+        "$systemdsystemunitdir/systemd-udev-trigger.service.d/*.conf" \
+        "$systemdsystemunitdir"/systemd-udev-settle.service \
+        "$systemdsystemunitdir/systemd-udev-settle.service.d/*.conf" \
+        "$systemdsystemunitdir"/systemd-udevd-control.socket \
+        "$systemdsystemunitdir"/systemd-udevd-kernel.socket \
+        "$systemdsystemunitdir"/sockets.target.wants/systemd-udevd-control.socket \
+        "$systemdsystemunitdir"/sockets.target.wants/systemd-udevd-kernel.socket \
+        "$systemdsystemunitdir"/sysinit.target.wants/systemd-udevd.service \
+        "$systemdsystemunitdir"/sysinit.target.wants/systemd-udev-trigger.service \
+        udevadm
+
+    # Install the hosts local user configurations if enabled.
+    if [[ $hostonly ]]; then
+        inst_multiple -H -o \
+            /etc/udev/hwdb.bin \
+            /etc/udev/udev.conf \
+            "/etc/udev/rules.d/*.rules" \
+            "$systemdutilconfdir"/hwdb/hwdb.bin \
+            "$systemdsystemconfdir"/systemd-udevd.service \
+            "$systemdsystemconfdir/systemd-udevd.service.d/*.conf" \
+            "$systemdsystemconfdir"/systemd-udev-trigger.service \
+            "$systemdsystemconfdir/systemd-udev-trigger.service.d/*.conf" \
+            "$systemdsystemconfdir"/systemd-udev-settle.service \
+            "$systemdsystemconfdir/systemd-udev-settle.service.d/*.conf" \
+            "$systemdsystemconfdir"/systemd-udevd-control.socket \
+            "$systemdsystemconfdir"/systemd-udevd-kernel.socket \
+            "$systemdsystemconfdir"/sockets.target.wants/systemd-udevd-control.socket \
+            "$systemdsystemconfdir"/sockets.target.wants/systemd-udevd-kernel.socket \
+            "$systemdsystemconfdir"/sysinit.target.wants/systemd-udevd.service \
+            "$systemdsystemconfdir"/sysinit.target.wants/systemd-udev-trigger.service
+    fi
+
+    # Install required libraries.
+    _arch=${DRACUT_ARCH:-$(uname -m)}
+    inst_libdir_file {"tls/$_arch/",tls/,"$_arch/",}"libudev.so.*"
+
+}