From 2b49c7ca97941cb9164f1f8b70892007706f6ae5 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?S=C3=B6ren=20Tempel?= <soeren+git@soeren-tempel.net>
Date: Mon, 26 Sep 2022 04:06:30 +0200
Subject: [PATCH] init: allow force loading of extra modules via the kernel
 command-line

Fixes #186
---
 docs/manpage.md           |  1 +
 init/cmdline.go           |  6 ++++++
 3 files changed, 20 insertions(+)

diff --git a/docs/manpage.md b/docs/manpage.md
index f8912fd..6cc1553 100644
--- a/docs/manpage.md
+++ b/docs/manpage.md
@@ -117,6 +117,7 @@ Some parts of booster boot functionality can be modified with kernel boot parame
  * `rd.luks.key=$UUID=$PATH` absolute path to a keyfile in the initrd/initramfs which can be unsed to unlock the device identified by UUID, if this file does not exist or fails to unlock it will fall back to a password request.
  * `rd.luks.options=opt1,opt2` a comma-separated list of LUKS flags. Supported options are `discard`, `same-cpu-crypt`, `submit-from-crypt-cpus`, `no-read-workqueue`, `no-write-workqueue`.
     Note that booster also supports LUKS v2 persistent flags stored with the partition metadata. Any command-line options are added on top of the persistent flags.
+ * `rd.modules_force_load` a comma-separated list of extra kernel modules which should be force loaded.
  * `resume=$deviceref` device reference to suspend-to-disk device.
  * `zfs=$pool/$dataset` specifies what ZFS dataset needs to be used for root partition. This option is only used if ZFS config option is enabled. If ZFS filesystem is enabled then `root=` boot param is ignored.
  * `booster.log` configures booster init logging. It accepts a comma separated list of following values:
diff --git a/init/cmdline.go b/init/cmdline.go
index fb9d4ef..8d7b3fa 100644
--- a/init/cmdline.go
+++ b/init/cmdline.go
@@ -192,7 +192,13 @@ func parseParams(params string) error {
 			if err != nil {
 				return fmt.Errorf("root=%s: %v", value, err)
 			}
+		case "rd.modules_force_load":
+			if value == "" {
+				break
+			}
 
+			modules := strings.Split(value, ",")
+			config.ModulesForceLoad = append(config.ModulesForceLoad, modules...)
 		case "resume":
 			var err error
 			cmdResume, err = parseDeviceRef(value)