dracut modules: implement squashfs-img script

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

@@ -1 +1,27 @@
 #!/bin/bash
+
+type getarg > /dev/null 2>&1 || source /lib/dracut-lib.sh
+
+[ ! -d /sysroot/container ] && mkdir -p /sysroot/container
+
+CONTAINER="$(getarg void-usb-container)"
+case "$CONTAINER" in
+  LABEL=* | UUID=* | PARTUUID=* | PARTLABEL=*)
+    CONTAINER="$(label_uuid_to_dev "$CONTAINER")"
+    ;;
+  /dev/*)
+    true
+    ;;
+  *)
+    echo -e "Invalid value for 'void-usb-container' kernel command line parameter!\nDropping into emergency shell."
+    emergency_shell
+esac
+
+mount -t f2fs -o nodev,nosuid "$CONTAINER" /sysroot/container
+
+if [ -f /sysroot/container/squashfs.img ]; then
+  losetup -r -f /sysroot/container/squashfs.img
+else
+  echo "Failed to find squashfs image. Dropping into an emergency shell. Good luck!"
+  emergency_shell
+fi

install-stage1.sh

@@ -188,7 +188,7 @@ echo "%wheel ALL=(ALL:ALL) ALL" > /mnt/target/etc/sudoers.d/wheel_as_sudo_group.
 mkdir -p /mnt/target/opt/void-usb
 chmod 755 /mnt/target/opt/void-usb
 
-echo "UUID=$(blkid --output value --match-tag UUID $TARGET_PART_BIG) /container f2fs defaults,rw,nodev,nosuid 0 1" > /mnt/target/opt/void-usb/initramfs-fstab
+echo "UUID=$(blkid --output value --match-tag UUID $TARGET_PART_BIG)" > /mnt/target/opt/void-usb/container
 
 echo '# Void USB dracut configuration
 
@@ -196,8 +196,7 @@ hostonly="no"
 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
+omit_dracutmodules+=" nvdimm resume "' > /mnt/target/etc/dracut.conf.d/99-void-usb.conf
 
 #TODO: mount /container
 mkdir -p /mnt/target/lib/dracut/modules.d/90void-usb

opt/grub-config

@@ -4,7 +4,7 @@ OS_NAME="Void Linux USB"
 GRUB_PREFIX="/boot/efi/LOADER/grub"
 CFG_CUSTOM_BEFORE="custom_before.cfg"
 CFG_CUSTOM_AFTER="custom_after.cfg"
-LINUX_CMDLINE="root=/dev/loop0 ro"
+LINUX_CMDLINE="root=/dev/loop0 ro void-usb-container=$(cat /opt/void-usb/container)"
 
 DEFAULT_LINUX=/boot/vmlinu?
 if [ ! -f "$DEFAULT_LINUX" ]; then
@@ -79,7 +79,7 @@ fi
 
 menuentry '$OS_NAME' {
   echo 'Loading Linux...'
-  linux /$DEFAULT_LINUX
+  linux /$DEFAULT_LINUX $LINUX_CMDLINE
   echo 'Loading initial ramdisk...'
   initrd /$DEFAULT_INITRAMFS
 }