feat(systemd-sysusers): introducing systemd-sysuser module

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

@@ -0,0 +1,60 @@
+#!/bin/sh
+# 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
+    # return 1 to not include the binary.
+    require_binaries systemd-sysusers || return 1
+
+    # If the module dependency requirements are not fulfilled
+    # return 1 to not include the required module(s).
+    if ! dracut_module_included "systemd"; then
+        derror "systemd-sysuser needs systemd in the initramfs."
+        return 1
+    fi
+
+    # Return 255 to only include the module, if another module requires it.
+    return 255
+
+}
+
+# Module dependency requirements.
+depends() {
+
+    # This module has external dependency on the systemd module.
+    echo systemd
+    # Return 0 to include the dependent systemd module in the initramfs.
+    return 0
+
+}
+
+# Install the required file(s) for the module in the initramfs.
+install() {
+
+    inst_multiple -o \
+        # Install the system users and groups configuration file.
+        $sysusers/basic.conf \
+        # Install the systemd users and groups configuration file.
+        $sysusers/systemd.conf \
+        # Install the systemd type service unit for sysusers.
+        $systemdsystemunitdir/systemd-sysusers.service \
+        # Install the binary executable(s) for sysusers.
+        systemd-sysusers
+
+        # Install the hosts local user configurations if enabled.
+        if [[ $hostonly ]]; then
+            inst_multiple -H -o \
+            $sysusersconfdir/basic.conf \
+            $sysusersconfdir/systemd.conf \
+            $systemdsystemconfdir/systemd-sysusers.service \
+            $systemdsystemconfdir/systemd-sysusers.service.d/*.conf
+            ${NULL}
+        fi
+
+        # Enable the systemd type service unit for sysusers.
+        systemctl -q --root "$initdir" enable systemd-sysusers.service
+
+}