From 489e7792fb85a1ee52f35c61f3ce8af3adf23a68 Mon Sep 17 00:00:00 2001
From: Pavel Valena <pvalena@redhat.com>
Date: Tue, 25 Apr 2023 14:56:59 +0200
Subject: [PATCH] feat(hwdb): add hwdb module to install hwdb.bin on demand

Module to install hwdb.bin. Further extensions might make only selected
part of hwdb installable to save space. The module is not included by default.

Including the module adds 2MB of compressed data (on Fedora, the file has 12MB).

Installing hwdb.bin is needed in case of custom HW like a keyboard/mouse, or various interfaces.

Original PR: https://github.com/dracutdevs/dracut/pull/1681
---
 .github/labeler.yml              |  4 ++++
 modules.d/95hwdb/module-setup.sh | 26 ++++++++++++++++++++++++++
 2 files changed, 30 insertions(+)
 create mode 100755 modules.d/95hwdb/module-setup.sh

diff --git a/.github/labeler.yml b/.github/labeler.yml
index b8146a09..772e2764 100644
--- a/.github/labeler.yml
+++ b/.github/labeler.yml
@@ -406,6 +406,10 @@ fstab-sys:
   - changed-files:
     - any-glob-to-any-file: 'modules.d/95fstab-sys/*'
 
+hwdb:
+  - changed-files:
+    - any-glob-to-any-file: 'modules.d/95hwdb/*'
+
 iscsi:
   - changed-files:
     - any-glob-to-any-file: 'modules.d/95iscsi/*'
diff --git a/modules.d/95hwdb/module-setup.sh b/modules.d/95hwdb/module-setup.sh
new file mode 100755
index 00000000..5d3250f3
--- /dev/null
+++ b/modules.d/95hwdb/module-setup.sh
@@ -0,0 +1,26 @@
+#!/bin/bash
+# This file is part of dracut.
+# SPDX-License-Identifier: GPL-2.0-or-later
+
+check() {
+    return 255
+}
+
+# called by dracut
+install() {
+    local hwdb_bin
+
+    # Follow the same priority as `systemd-hwdb`; `/etc` is the default
+    # and `/usr/lib` an alternative location.
+    hwdb_bin="${udevconfdir}"/hwdb.bin
+
+    if [[ ! -r ${hwdb_bin} ]]; then
+        hwdb_bin="${udevdir}"/hwdb.bin
+    fi
+
+    if [[ $hostonly ]]; then
+        inst_multiple -H "${hwdb_bin}"
+    else
+        inst_multiple "${hwdb_bin}"
+    fi
+}