dracut modules: add 90void-usb

dracut-modules/90void-usb/create-loop0.sh

@@ -0,0 +1,3 @@
+#!/bin/bash
+
+mknod --mode=660 /dev/loop0 b 7 0

dracut-modules/90void-usb/module-setup.sh

@@ -0,0 +1,18 @@
+#!/usr/bin/env bash
+
+check() {
+  return 0
+}
+
+depends() {
+  echo bash
+}
+
+install() {
+  inst_hook pre-udev 90 "$moddir/create-loop0.sh"
+  inst_hook pre-mount 92 "$moddir/squashfs-img.sh"
+}
+
+installkernel() {
+  instmods loop
+}

dracut-modules/90void-usb/squashfs-img.sh

@@ -0,0 +1 @@
+#!/bin/bash

install-stage1.sh

@@ -193,11 +193,21 @@ echo "UUID=$(blkid --output value --match-tag UUID $TARGET_PART_BIG) /container
 echo '# Void USB dracut configuration
 
 hostonly="no"
-omit_dracutmodules+=" nvdimm resume "
 compress="xz"
+
+add_dracutmodules+=" void-usb "
+omit_dracutmodules+=" nvdimm resume "
 add_fstab+=" /opt/void-usb/initramfs-fstab "' > /mnt/target/etc/dracut.conf.d/99-void-usb.conf
 
-# TODO: add dracut modules
+#TODO: mount /container
+mkdir -p /mnt/target/lib/dracut/modules.d/90void-usb
+chmod 755 /mnt/target/lib/dracut/modules.d/90void-usb
+wget --output-document=/mnt/target/lib/dracut/modules.d/90void-usb/module-setup.sh https://lostcave.ddnss.de/git/BodgeMaster/void-minecraft-usb/raw/branch/master/dracut-modules/90void-usb/module-setup.sh
+chmod 744 /mnt/target/lib/dracut/modules.d/90void-usb/module-setup.sh
+wget --output-document=/mnt/target/lib/dracut/modules.d/90void-usb/create-loop0.sh https://lostcave.ddnss.de/git/BodgeMaster/void-minecraft-usb/raw/branch/master/dracut-modules/90void-usb/create-loop0.sh
+chmod 744 /mnt/target/lib/dracut/modules.d/90void-usb/create-loop0.sh
+wget --output-document=/mnt/target/lib/dracut/modules.d/90void-usb/squashfs-img.sh https://lostcave.ddnss.de/git/BodgeMaster/void-minecraft-usb/raw/branch/master/dracut-modules/90void-usb/squashfs-img.sh
+chmod 744 /mnt/target/lib/dracut/modules.d/90void-usb/squashfs-img.sh
 
 wget --output-document=/mnt/target/opt/void-usb/backup-fs https://lostcave.ddnss.de/git/BodgeMaster/void-minecraft-usb/raw/branch/master/opt/backup-fs
 chmod 744 /mnt/target/opt/void-usb/backup-fs

notes_to_self.txt

@@ -36,12 +36,14 @@ f2fs for home
 
 boot setup + dracut configuration
   - root=/dev/loop0 ro
-  - custom dracut modules
-    - udev rule for /dev/loop0
+  - custom dracut module
+    - pre-udev script
+      - make loop0 appear
     - pre-mount script
       - mount /container by UUID (possibly passed from a kernel command line parameter)
       - losetup the squashfs img
-    - do we need one to move over the /container mount to real root?
+    - pre-pivot script?
+      - do we need one to move over the /container mount to real root?
   - overlayfs gets mounted from fstab
 
 when backing up