Add option to use initoverlayfs as an init system

- Introduced a new command-line option (--initoverlayfs-init) to enable
  initoverlayfs as an init system and mount storage immediately.
- Modified the script to handle the new option and update the configuration
  accordingly.
- Updated the version to 0.993.
- Added changelog entry for the new release.
- Updated the build scripts and spec file to include necessary dependencies
  and handle the new option.
- Modified the dracut module setup to check for the new option and adjust the
  installation accordingly.
- Updated the build script to include the necessary library (libblkid) for
  linking.
- Improved error handling and logging in the main script.
- Updated systemd integration to conditionally include systemd units based on
  the new option.
- Improved build scripts for better compatibility and error handling.

bin/initoverlayfs-install

@@ -119,13 +119,19 @@ extract_initrd_into_initoverlayfs() {
 # main()
 
 args="$*"
+initoverlayfs_init="false"
 while [[ $# -gt 0 ]]; do
   echo "$1"
   case $1 in
     --kver)
       kver="$2"
       shift 2
       ;;
+    --initoverlayfs-init)
+      initoverlayfs_init="true"
+      args=$(echo "$args" | sed "s/--initoverlayfs-init//g")
+      shift 1
+      ;;
     *)
       shift 1
       ;;
@@ -149,11 +155,16 @@ detect_path_initramfs
 if ! [ -e "$INITOVERLAYFS_CONF" ] || ! grep -q '[^[:space:]]' "$INITOVERLAYFS_CONF"; then
   boot_partition=$(< /etc/fstab grep "${INITRAMFS_DIR}.*ext4" | awk '{print $1}')
 
-  printf "%s\n%s\n%s\n%s\n" \
+  printf "%s\n%s\n%s\n%s" \
          "bootfs $boot_partition" \
          "bootfstype ext4" \
-         "initoverlayfs_builder dracut -M -o \"initoverlayfs fcoe\"" \
-         "initrd_builder dracut -M -m \"kernel-modules udev-rules initoverlayfs systemd base\" -o \"bash systemd-initrd i18n kernel-modules-extra rootfs-block dracut-systemd usrmount fs-lib microcode_ctl-fw_dir_override shutdown nss-softokn\"" > $INITOVERLAYFS_CONF
+         "initoverlayfs_builder dracut -M -o \"initoverlayfs fcoe\"" > $INITOVERLAYFS_CONF
+
+  if $initoverlayfs_init; then
+    printf "%s\n" "initrd_builder dracut -M -m \"initoverlayfs\" -o \"kernel-modules udev-rules systemd base bash systemd-initrd i18n kernel-modules-extra rootfs-block dracut-systemd usrmount fs-lib microcode_ctl-fw_dir_override shutdown nss-softokn\"" >> $INITOVERLAYFS_CONF
+  else
+    printf "%s\n" "initrd_builder dracut -M -m \"kernel-modules udev-rules initoverlayfs systemd base\" -o \"bash systemd-initrd i18n kernel-modules-extra rootfs-block dracut-systemd usrmount fs-lib microcode_ctl-fw_dir_override shutdown nss-softokn\"" >> $INITOVERLAYFS_CONF
+  fi
 
   erofs_compression_supported="true"
   # shellcheck disable=SC2034
@@ -167,6 +178,10 @@ if ! [ -e "$INITOVERLAYFS_CONF" ] || ! grep -q '[^[:space:]]' "$INITOVERLAYFS_CO
     fi
   done
 
+  if $initoverlayfs_init; then
+    printf "%s\n" "initoverlayfs_init true" >> $INITOVERLAYFS_CONF
+  fi
+
   if $erofs_compression_supported; then
     printf "%s\n" "erofs_compression -zlz4hc,11" >> $INITOVERLAYFS_CONF
   fi

build-scripts/version.sh

@@ -2,7 +2,7 @@
 # SPDX-License-Identifier: LGPL-2.1-or-later
 
 # Current version of initoverlayfs
-VERSION=0.992
+VERSION=0.993
 # Specify if build is a official release or a snapshot build
 IS_RELEASE=false
 # Used for official releases. Increment if necessary