Supporting Grub2-BLS

README.md

@@ -37,6 +37,7 @@ that holds and also can propose the bootloader implementation. So now let's expl
 
 - [GRUB2](https://www.rubydoc.info/github/yast/yast-bootloader/master/Bootloader/Grub2) for legacy booting or emulated grub2 boot like s390x.
 - [GRUB2-EFI](https://www.rubydoc.info/github/yast/yast-bootloader/master/Bootloader/Grub2EFI) for EFI variant of GRUB2 bootloader
+- [GRUB2-BLS](https://www.rubydoc.info/github/yast/yast-bootloader/master/Bootloader/Grub2Bls) bootloader based on Boot Loader Specification(BLS) (for EFI only)
 - [systemd-boot](https://www.rubydoc.info/github/yast/yast-bootloader/master/Bootloader/SystemdBoot) systemd bootloader (for EFI only)
 - [None](https://www.rubydoc.info/github/yast/yast-bootloader/master/Bootloader/NoneBootloader) when YaST does not manage booting
 - [GRUB2 base](https://www.rubydoc.info/github/yast/yast-bootloader/master/Bootloader/Grub2Base) is the shared functionality for both GRUB2 implementations

package/yast2-bootloader.changes

@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Wed Nov 13 16:28:04 UTC 2024 - Stefan Schubert <[email protected]>
+
+- Added grub2-bls support (jsc#PED-10703).
+- 5.0.13
+
 -------------------------------------------------------------------
 Tue Nov  5 09:57:58 UTC 2024 - Josef Reidinger <[email protected]>
 

package/yast2-bootloader.spec

@@ -17,7 +17,7 @@
 
 
 Name:           yast2-bootloader
-Version:        5.0.12
+Version:        5.0.13
 Release:        0
 Summary:        YaST2 - Bootloader Configuration
 License:        GPL-2.0-or-later

src/lib/bootloader/autoyast_converter.rb

@@ -34,16 +34,18 @@ def import(data)
         return bootloader if bootloader.name == "none"
 
         case bootloader.name
-        when "grub2", "grub2-efi"
-          import_grub2(data, bootloader)
-          import_grub2efi(data, bootloader)
-          import_stage1(data, bootloader)
+        when "grub2", "grub2-efi", "grub2-bls"
+          if ["grub2", "grub2-efi"].include?(bootloader.name)
+            import_grub2(data, bootloader)
+            import_grub2efi(data, bootloader)
+            import_stage1(data, bootloader)
+            import_device_map(data, bootloader)
+            import_password(data, bootloader)
+            # always nil pmbr as autoyast does not support it yet,
+            # so use nil to always use proposed value (bsc#1081967)
+            bootloader.pmbr_action = nil
+          end
           import_default(data, bootloader.grub_default)
-          import_device_map(data, bootloader)
-          import_password(data, bootloader)
-          # always nil pmbr as autoyast does not support it yet,
-          # so use nil to always use proposed value (bsc#1081967)
-          bootloader.pmbr_action = nil
           cpu_mitigations = data.global.cpu_mitigations
           if cpu_mitigations
             bootloader.cpu_mitigations = CpuMitigations.from_string(cpu_mitigations)
@@ -72,18 +74,18 @@ def export(config)
         res["global"] = {}
 
         case config.name
-        when "grub2", "grub2-efi"
+        when "grub2", "grub2-efi", "grub2-bls"
           global = res["global"]
           export_grub2(global, config) if config.name == "grub2"
           export_grub2efi(global, config) if config.name == "grub2-efi"
+          export_password(global, config.password) if ["grub2", "grub2-efi"].include?(config.name)
           export_default(global, config.grub_default)
-          export_password(global, config.password)
           res["global"]["cpu_mitigations"] = config.cpu_mitigations.value.to_s
         when "systemd-boot"
           res["global"]["timeout"] = config.menu_timeout
           res["global"]["secure_boot"] = config.secure_boot
         else
-          raise UnsupportedBootloader, bootloader.name
+          raise UnsupportedBootloader, config.name
         end
         # Do not export device map as device name are very unpredictable and is used only as
         # work-around when automatic ones do not work for what-ever reasons ( it can really safe

src/lib/bootloader/bls_sections.rb

@@ -0,0 +1,95 @@
+# frozen_string_literal: true
+
+require "json"
+require "yast"
+require "yast2/execute"
+
+Yast.import "Misc"
+
+module Bootloader
+  # Represents available sections and handling of default BLS boot entry
+  class BlsSections
+    include Yast::Logger
+
+    # @return [Array<String>] list of all available boot titles
+    # or an empty array
+    attr_reader :all
+
+    # @return [String] title of default boot section.
+    attr_reader :default
+
+    def initialize
+      @all = []
+      @default = ""
+    end
+
+    # Sets default section internally.
+    # @param [String] value of new boot title to boot
+    # @note to write it to system use #write later
+    def default=(value)
+      log.info "set new default to '#{value.inspect}'"
+
+      # empty value mean no default specified
+      if !all.empty? && !all.include?(value) && !value.empty?
+        log.warn "Invalid value #{value} trying to set as default. Fallback to default"
+        value = ""
+      end
+
+      @default = value
+    end
+
+    # writes default to system making it persistent
+    def write
+      return if @default.empty?
+
+      write_default
+    end
+
+    def read
+      @data = read_entries
+      @all = @data.map { |e| e["title"] }
+      @default = read_default
+    end
+
+  private
+
+    OS_RELEASE_PATH = "/etc/os-release"
+
+    def grubenv_path
+      str = Yast::Misc.CustomSysconfigRead("ID_LIKE", "openSUSE",
+        OS_RELEASE_PATH)
+      os = str.split.first
+      File.join("/boot/efi/EFI/", os, "/grubenv")
+    end
+
+    # @return [String] return default boot as string or "" if not set
+    # or something goes wrong
+    def read_default
+      Yast::Misc.CustomSysconfigRead("default", "",
+        grubenv_path)
+    end
+
+    # write default entry
+    def write_default
+      ret = Yast::Execute.on_target("/usr/bin/sdbootutil",
+        "set-default", @default,
+        allowed_exitstatus: [0, 1])
+
+      return unless ret != 0
+
+      # fallback directly over grub2-editenv
+      Yast::Execute.on_target("/usr/bin/grub2-editenv", grubenv_path,
+        "set", "default=" + @default)
+    end
+
+    # @return [Array] return array of entries or []
+    def read_entries
+      output = Yast::Execute.on_target(
+        "/usr/bin/bootctl", "--json=short", "list", stdout: :capture
+      )
+      return [] if output.nil?
+
+      JSON.parse(output)
+    end
+  end
+end

src/lib/bootloader/bootloader_base.rb

@@ -11,7 +11,11 @@
 module Bootloader
   # Represents base for all kinds of bootloaders
   class BootloaderBase
+    include Yast::I18n
+
     def initialize
+      textdomain "bootloader"
+
       @read = false
       @proposed = false
       @initial_sysconfig = Sysconfig.from_system
@@ -113,5 +117,13 @@ def include_kexec_tools_package?
     def restore_initial_sysconfig
       @initial_sysconfig.write
     end
+
+    def status_string(status)
+      if status
+        _("enabled")
+      else
+        _("disabled")
+      end
+    end
   end
 end

src/lib/bootloader/bootloader_factory.rb

@@ -5,6 +5,7 @@
 require "bootloader/none_bootloader"
 require "bootloader/grub2"
 require "bootloader/grub2efi"
+require "bootloader/grub2bls"
 require "bootloader/systemdboot"
 require "bootloader/exceptions"
 
@@ -24,6 +25,7 @@ class BootloaderFactory
     # Keyword used in autoyast for default bootloader used for given system.
     DEFAULT_KEYWORD = "default"
     SYSTEMDBOOT = "systemd-boot"
+    GRUB2BLS = "grub2-bls"
 
     class << self
       include Yast::Logger
@@ -57,6 +59,7 @@ def supported_names
         if Yast::Mode.config
           # default means bootloader use what it think is the best
           result = BootloaderFactory::SUPPORTED_BOOTLOADERS.clone
+          result << GRUB2BLS if use_grub2_bls?
           result << SYSTEMDBOOT if use_systemd_boot?
           result << DEFAULT_KEYWORD
           return result
@@ -72,6 +75,7 @@ def supported_names
         # grub2 everywhere except aarch64 or riscv64
         ret << "grub2" unless Systeminfo.efi_mandatory?
         ret << "grub2-efi" if Systeminfo.efi_supported?
+        ret << GRUB2BLS if use_grub2_bls?
         ret << SYSTEMDBOOT if use_systemd_boot?
         ret << "none"
         # avoid double entry for selected one
@@ -89,6 +93,8 @@ def bootloader_by_name(name)
           @cached_bootloaders["grub2-efi"] ||= Grub2EFI.new
         when "systemd-boot"
           @cached_bootloaders["systemd-boot"] ||= SystemdBoot.new
+        when "grub2-bls"
+          @cached_bootloaders["grub2-bls"] ||= Grub2Bls.new
         when "none"
           @cached_bootloaders["none"] ||= NoneBootloader.new
         when String
@@ -108,6 +114,10 @@ def use_systemd_boot?
           (Yast::Arch.x86_64 || Yast::Arch.aarch64) # only these architectures are supported.
       end
 
+      def use_grub2_bls?
+        (Yast::Arch.x86_64 || Yast::Arch.aarch64) # only these architectures are supported.
+      end
+
       def grub2_efi_installable?
         Systeminfo.efi_mandatory? ||
           ((Yast::Arch.x86_64 || Yast::Arch.i386) && Systeminfo.efi?)

src/lib/bootloader/config_dialog.rb

@@ -93,7 +93,7 @@ def contents
         boot_code_tab = ::Bootloader::SystemdBootWidget::BootCodeTab.new
         kernel_tab = ::Bootloader::SystemdBootWidget::KernelTab.new
         bootloader_tab = ::Bootloader::SystemdBootWidget::BootloaderTab.new
-      else
+      else # grub2, grub2-efi, grub2-bls
         boot_code_tab = ::Bootloader::Grub2Widget::BootCodeTab.new
         kernel_tab = ::Bootloader::Grub2Widget::KernelTab.new
         bootloader_tab = ::Bootloader::Grub2Widget::BootloaderTab.new

src/lib/bootloader/generic_widgets.rb

@@ -43,6 +43,7 @@ def localized_names(name)
       names = {
         "grub2"        => _("GRUB2"),
         "grub2-efi"    => _("GRUB2 for EFI"),
+        "grub2-bls"    => _("GRUB2 with BLS"),
         # Translators: option in combo box when bootloader is not managed by yast2
         "systemd-boot" => _("Systemd Boot"),
         "none"         => _("Not Managed"),
@@ -52,8 +53,6 @@ def localized_names(name)
       names[name] or raise "Unknown supported bootloader '#{name}'"
     end
 
-    # rubocop:disable Metrics/MethodLength
-    # It will be reduced again if systemd-boot is not anymore in beta phase.
     def handle
       old_bl = BootloaderFactory.current.name
       new_bl = value
@@ -73,20 +72,6 @@ def handle
         return :redraw if !Yast::Popup.ContinueCancel(popup_msg)
       end
 
-      if new_bl == "systemd-boot"
-        # popup - Continue/Cancel
-        popup_msg = _(
-          "\n" \
-          "Systemd-boot support is currently work in progress and\n" \
-          "may not work as expected. Use at your own risk.\n" \
-          "\n" \
-          "Currently we do not provide official maintenance or support.\n" \
-          "Proceed?\n"
-        )
-
-        return :redraw if !Yast::Popup.ContinueCancel(popup_msg)
-      end
-
       if !Yast::Stage.initial && (old_bl == "systemd-boot")
         Yast::Popup.Warning(_(
         "Switching from systemd-boot to another bootloader\n" \
@@ -101,7 +86,6 @@ def handle
       :redraw
     end
 
-    # rubocop:enable Metrics/MethodLength
     def help
       _(
         "<p><b>Boot Loader</b>\n" \