Class: Bootloader::Grub2

Inherits:
Grub2Base show all
Defined in:
src/lib/bootloader/grub2.rb

Overview

Represents non-EFI variant of GRUB2

Instance Attribute Summary collapse

Attributes inherited from Grub2Base

#console, #grub_default, #password, #pmbr_action, #sections, #secure_boot, #stage1, #trusted_boot, #update_nvram

Instance Method Summary collapse

Methods inherited from Grub2Base

#cpu_mitigations, #cpu_mitigations=, #disable_serial_console, #enable_serial_console, #explicit_cpu_mitigations, #include_os_prober_package?, #pmbr_setup, #serial_console?

Methods inherited from BootloaderBase

#prepare, #proposed?, #read?

Constructor Details

#initialize ⇒ Grub2

Returns a new instance of Grub2.



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# File 'src/lib/bootloader/grub2.rb', line 21

def initialize
  super

  textdomain "bootloader"
  @stage1 = Stage1.new
  @grub_install = GrubInstall.new(efi: false)
  @device_map = DeviceMap.new
end

Instance Attribute Details

#device_map ⇒ Object (readonly)

Returns the value of attribute device_map.



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# File 'src/lib/bootloader/grub2.rb', line 19

def device_map
  @device_map
end

Instance Method Details

#merge(other) ⇒ Object 



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# File 'src/lib/bootloader/grub2.rb', line 94

def merge(other)
  super

  @device_map = other.device_map if !other.device_map.empty?

  stage1.merge(other.stage1)
end

#name ⇒ Object 



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# File 'src/lib/bootloader/grub2.rb', line 135

def name
  "grub2"
end

#packages ⇒ Object 



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# File 'src/lib/bootloader/grub2.rb', line 139

def packages
  res = super
  res << "grub2"
  res << "syslinux" if include_syslinux_package?
  res << "trustedgrub2" << "trustedgrub2-i386-pc" if include_trustedgrub2_packages?
  res
end

#propose ⇒ Object 



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# File 'src/lib/bootloader/grub2.rb', line 83

def propose
  super

  stage1.propose
  # for GPT add protective MBR flag otherwise some systems won't
  # boot, safer option for legacy booting (bnc#872054)
  self.pmbr_action = :add
  log.info "proposed pmbr_action #{pmbr_action}."
  device_map.propose if Yast::Arch.x86_64 || Yast::Arch.i386
end

#read ⇒ Object

Read settings from disk, overwritting already set values



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# File 'src/lib/bootloader/grub2.rb', line 31

def read
  super

  begin
    stage1.read
  rescue Errno::ENOENT
    # grub_installdevice is not part of grub2 rpm, so it doesn't need to exist.
    # In such case ignore exception and use empty @stage1
    log.info "grub_installdevice does not exist. Using empty one."
    @stage1 = Stage1.new
  end

  begin
    # device map is needed only for legacy boot on intel
    device_map.read if Yast::Arch.x86_64 || Yast::Arch.i386
  rescue Errno::ENOENT
    # device map is only optional part of grub2, so it doesn't need to exist.
    # In such case ignore exception and use empty device map
    log.info "grub2/device.map does not exist. Using empty one."
    @device_map = DeviceMap.new
  end
end

#summary(simple_mode: false) ⇒ Object

Display bootloader summary

Returns:

  • a list of summary lines



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# File 'src/lib/bootloader/grub2.rb', line 104

def summary(simple_mode: false)
  result = [
    Yast::Builtins.sformat(
      _("Boot Loader Type: %1"),
      "GRUB2"
    )
  ]

  result.concat(boot_flags_summary)

  locations_val = locations
  if !locations_val.empty?
    result << format(
      _("Write Boot Code To: %s"),
      locations_val.join(", ")
    )
  end

  # it is necessary different summary for autoyast and installation
  # other mode than autoyast on running system
  # both ppc and s390 have special devices for stage1 so it do not make sense
  # allow change of location to MBR or boot partition (bnc#879107)
  no_location = simple_mode || Yast::Arch.ppc || Yast::Arch.s390 || Yast::Mode.config
  result << url_location_summary unless no_location

  order_sum = disk_order_summary
  result << order_sum unless order_sum.empty?

  result
end

#write(etc_only: false) ⇒ Boolean

Write bootloader settings to disk

Returns:

  • (Boolean) —

    true on success



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# File 'src/lib/bootloader/grub2.rb', line 56

def write(etc_only: false)
  # super have to called as first as grub install require some config writen in ancestor
  super

  device_map.write if (Yast::Arch.x86_64 || Yast::Arch.i386) && !etc_only

  # TODO: own class handling PBMR
  # set it only for gpt disk bsc#1008092
  pmbr_setup(*::Yast::BootStorage.gpt_disks(stage1.devices))

  # powernv must not call grub2-install (bnc#970582)
  if !Yast::Arch.board_powernv
    if !etc_only
      failed = @grub_install.execute(
        devices: stage1.devices, secure_boot: secure_boot, trusted_boot: trusted_boot,
        update_nvram: update_nvram
      )
      failed.each { |f| stage1.remove_device(f) }
    end
    # write stage1 location
    stage1.write
  end
  # Do some mbr activations ( s390 do not have mbr nor boot flag on its disks )
  # powernv do not have prep partition, so we do not have any partition to activate (bnc#970582)
  MBRUpdate.new.run(stage1) if !Yast::Arch.s390 && !Yast::Arch.board_powernv && !etc_only
end

#write_sysconfig(prewrite: false) ⇒ Object

FIXME: refactor with injection like super(prewrite: prewrite, sysconfig = ...) overwrite BootloaderBase version to save trusted boot



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# File 'src/lib/bootloader/grub2.rb', line 149

def write_sysconfig(prewrite: false)
  sysconfig = Bootloader::Sysconfig.new(
    bootloader: name, secure_boot: secure_boot, trusted_boot: trusted_boot,
    update_nvram: update_nvram
  )
  prewrite ? sysconfig.pre_write : sysconfig.write
end