Class: Yast::BootloaderClass

Inherits:
Module
  • Object
show all
Includes:
Logger
Defined in:
src/modules/Bootloader.rb

Constant Summary collapse

BOOLEAN_MAPPING = 
{ true => :present, false => :missing }.freeze
FLAVOR_KERNEL_LINE_MAP = 
{
  :common    => "append",
  :xen_guest => "xen_append",
  :xen_host  => "xen_kernel_append"
}.freeze

Instance Method Summary collapse

Instance Method Details

#Export ⇒ Object

Export bootloader settings to a map

Returns:

  • bootloader settings



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# File 'src/modules/Bootloader.rb', line 73

def Export
  config = ::Bootloader::BootloaderFactory.current
  config.read if !config.read? && !config.proposed?
  result = ::Bootloader::AutoyastConverter.export(config)

  log.info "autoyast map for bootloader: #{result.inspect}"

  result
end

#getDefaultSection ⇒ String

return default section label

Returns:

  • (String) —

    default section label



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# File 'src/modules/Bootloader.rb', line 299

def getDefaultSection
  ReadOrProposeIfNeeded()

  bootloader = Bootloader::BootloaderFactory.current
  return "" unless bootloader.respond_to?(:sections)

  bootloader.sections.default
end

#getLoaderType ⇒ String

Get currently used bootloader, detect if not set yet

Returns:

  • (String) —

    botloader type



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# File 'src/modules/Bootloader.rb', line 441

def getLoaderType
  ::Bootloader::BootloaderFactory.current.name
end

#Import(data) ⇒ Boolean

Import settings from a map

Parameters:

  • data (Hash) —

    map of bootloader settings

Returns:

  • (Boolean) —

    true on success



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# File 'src/modules/Bootloader.rb', line 86

def Import(data)
  factory = ::Bootloader::BootloaderFactory
  bootloader_section = ::Bootloader::AutoinstProfile::BootloaderSection.new_from_hashes(data)

  imported_configuration = import_bootloader(bootloader_section)
  return false if imported_configuration.nil?

  factory.clear_cache

  proposed_configuration = factory.bootloader_by_name(imported_configuration.name)
  unless Mode.config # no AutoYaST configuration mode
    proposed_configuration.propose
    proposed_configuration.merge(imported_configuration)
  end
  factory.current = proposed_configuration

  # mark that it is not clear proposal (bsc#1081967)
  Yast::Bootloader.proposed_cfg_changed = true

  true
end

#kernel_param(flavor, key) ⇒ String, ...

Gets value for given parameter in kernel parameters for given flavor.

Examples:

get crashkernel parameter to common kernel

Bootloader.kernel_param(:common, "crashkernel")
=> "256M@64B"

get cio_ignore parameter for xen_host kernel when missing

Bootloader.kernel_param(:xen_host, "cio_ignore")
=> :missing

get verbose parameter for xen_guest which is there

Bootloader.kernel_param(:xen_guest, "verbose")
=> :present

Parameters:

  • flavor (Symbol) —

    flavor of kernel, for possible values see #modify_kernel_param

  • key (String) —

    of parameter on kernel command line

Returns:

  • (String, :missing, :present) —

    Returns string for parameters with value, :missing if key is not there and :present for parameters without value.



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# File 'src/modules/Bootloader.rb', line 333

def kernel_param(flavor, key)
  if flavor == :recovery
    log.warn "Using deprecated recovery flavor"
    return :missing
  end

  ReadOrProposeIfNeeded() # ensure we have some data

  current_bl = ::Bootloader::BootloaderFactory.current
  # currently only grub2 bootloader supported
  return :missing unless current_bl.respond_to?(:grub_default)

  grub_default = current_bl.grub_default
  params = case flavor
  when :common then grub_default.kernel_params
  when :xen_guest then grub_default.xen_kernel_params
  when :xen_host then grub_default.xen_hypervisor_params
  else raise ArgumentError, "Unknown flavor #{flavor}"
  end

  res = params.parameter(key)

  BOOLEAN_MAPPING[res] || res
end

#main ⇒ Object 



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# File 'src/modules/Bootloader.rb', line 45

def main
  textdomain "bootloader"

  # installation proposal help variables

  # Configuration was changed during inst. proposal if true
  @proposed_cfg_changed = false

  # old vga value handling function

  # old value of vga parameter of default bootloader section
  @old_vga = nil

  # general functions

  @test_abort = nil
end

#modify_kernel_params(*args) ⇒ Boolean

Modify kernel parameters for installed kernels according to values

Examples:

add crashkernel parameter to common kernel and xen guest

Bootloader.modify_kernel_params(:common, :xen_guest, "crashkernel" => "256M@64M")

same as before just with array passing

targets = [:common, :xen_guest]
Bootloader.modify_kernel_params(targets, "crashkernel" => "256M@64M")

remove cio_ignore parameter for common kernel only

Bootloader.modify_kernel_params("cio_ignore" => :missing)

add cio_ignore parameter for xen host kernel

Bootloader.modify_kernel_params(:xen_host, "cio_ignore" => :present)

Parameters:

  • args (Array) —

    parameters to modify. Last parameter is hash with keys and its values, keys are strings and values are :present, :missing or string value. Other parameters specify which kernel flavors are affected. Known values are:

    • :common for non-specific flavor
    • :recovery DEPRECATED: no longer use
    • :xen_guest for xen guest kernels
    • :xen_host for xen host kernels

Returns:

  • (Boolean) —

    true if params were modified; false otherwise.

Raises:

  • (ArgumentError) 


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# File 'src/modules/Bootloader.rb', line 382

def modify_kernel_params(*args)
  ReadOrProposeIfNeeded() # ensure we have data to modify
  current_bl = ::Bootloader::BootloaderFactory.current
  # currently only grub2 bootloader supported
  return :missing unless current_bl.respond_to?(:grub_default)

  grub_default = current_bl.grub_default

  values = args.pop
  raise ArgumentError, "Missing parameters to modify #{args.inspect}" if !values.is_a? Hash

  args = [:common] if args.empty? # by default change common kernels only
  args = args.first if args.first.is_a? Array # support array like syntax

  if args.include?(:recovery)
    args.delete(:recovery)
    log.warn "recovery flavor is deprecated and not set"
  end

  remap_values = BOOLEAN_MAPPING.invert
  values.each_key do |key|
    values[key] = remap_values[values[key]] if remap_values.key?(values[key])
  end

  params = args.map do |flavor|
    case flavor
    when :common then grub_default.kernel_params
    when :xen_guest then grub_default.xen_kernel_params
    when :xen_host then grub_default.xen_hypervisor_params
    else raise ArgumentError, "Unknown flavor #{flavor}"
    end
  end

  changed = false
  values.each do |key, value|
    params.each do |param|
      old_val = param.parameter(key)
      next if old_val == value

      changed = true
      # at first clean old entries
      matcher = CFA::Matcher.new(key: key)
      param.remove_parameter(matcher)

      case value
      when false then next # already done
      when Array
        value.each { |val| param.add_parameter(key, val) }
      else
        param.add_parameter(key, value)
      end
    end
  end

  changed
end

#Propose ⇒ Object

Propose bootloader settings



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# File 'src/modules/Bootloader.rb', line 214

def Propose
  log.info "Proposing configuration"
  ::Bootloader::BootloaderFactory.current.propose

  log.info "Proposed settings: #{Export()}"

  nil
end

#Read ⇒ Boolean

Read settings from disk

Returns:

  • (Boolean) —

    true on success



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# File 'src/modules/Bootloader.rb', line 110

def Read
  log.info "Reading configuration"
  # run Progress bar
  stages = [
    # progress stage, text in dialog (short, infinitiv)
    _("Check boot loader"),
    # progress stage, text in dialog (short, infinitiv)
    _("Load boot loader settings")
  ]
  titles = [
    # progress step, text in dialog (short)
    _("Checking boot loader..."),
    # progress step, text in dialog (short)
    _("Reading partitioning..."),
    # progress step, text in dialog (short)
    _("Loading boot loader settings...")
  ]
  # dialog header
  Progress.New(
    _("Initializing Boot Loader Configuration"),
    " ",
    3,
    stages,
    titles,
    ""
  )

  Progress.NextStage
  return false if testAbort

  Progress.NextStage
  return false if testAbort

  begin
    ::Bootloader::BootloaderFactory.current.read
  rescue ::Bootloader::UnsupportedBootloader => e
    ret = Yast::Report.AnyQuestion(_("Unsupported Bootloader"),
      _("Unsupported bootloader '%s' detected. Use proposal of supported configuration instead?") %
        e.bootloader_name,
      _("Use"),
      _("Quit"),
      :yes) # focus proposing new one
    return false unless ret

    ::Bootloader::BootloaderFactory.current = ::Bootloader::BootloaderFactory.proposed
    ::Bootloader::BootloaderFactory.current.propose
  rescue ::Bootloader::BrokenConfiguration, ::Bootloader::UnsupportedOption => e
    msg = if e.is_a?(::Bootloader::BrokenConfiguration)
      # TRANSLATORS: %s stands for readon why yast cannot process it
      _("YaST cannot process current bootloader configuration (%s). " \
        "Propose new configuration from scratch?") % e.reason
    else
      e.message
    end

    ret = Yast::Report.AnyQuestion(_("Unsupported Configuration"),
      # TRANSLATORS: %s stands for readon why yast cannot process it
      msg,
      _("Propose"),
      _("Quit"),
      :yes) # focus proposing new one
    return false unless ret

    ::Bootloader::BootloaderFactory.current = ::Bootloader::BootloaderFactory.proposed
    ::Bootloader::BootloaderFactory.current.propose
  rescue Errno::EACCES
    # If the access to any needed file (e.g., grub.cfg when using GRUB bootloader) is not
    # allowed, just abort the execution. Using Yast::Confirm.MustBeRoot early in the
    # wizard/client is not enough since it allows continue.

    Yast2::Popup.show(
      # TRANSLATORS: pop-up message, beware the line breaks
      _("The module is running without enough privileges to perform all possible actions.\n\n" \
        "Cannot continue. Please, try again as root."),
      headline: :error
    )

    return false
  end

  Progress.Finish

  true
end

#ReadOrProposeIfNeeded ⇒ Object

Check whether settings were read or proposed, if not, decide what to do and read or propose settings



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# File 'src/modules/Bootloader.rb', line 447

def ReadOrProposeIfNeeded
  current_bl = ::Bootloader::BootloaderFactory.current
  return if current_bl.read? || current_bl.proposed?

  if Mode.config || (Stage.initial && !Mode.update)
    Propose()
  else
    progress_orig = Progress.set(false)
    if Stage.initial && Mode.update
      # SCR has been currently set to inst-sys. So we have
      # set the SCR to installed system in order to read
      # grub settings
      old_SCR = WFM.SCRGetDefault
      new_SCR = WFM.SCROpen("chroot=#{Yast::Installation.destdir}:scr",
        false)
      WFM.SCRSetDefault(new_SCR)
    end
    Read()
    if Stage.initial && Mode.update
      # settings have been read from the target system
      current_bl.read
      # reset target system to inst-sys
      WFM.SCRSetDefault(old_SCR)
      WFM.SCRClose(new_SCR)
    end
    Progress.set(progress_orig)
  end
end

#Reset ⇒ Object

Reset bootloader settings



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# File 'src/modules/Bootloader.rb', line 196

def Reset
  return if Mode.autoinst

  log.info "Resetting configuration"

  ::Bootloader::BootloaderFactory.clear_cache
  if Stage.initial
    config = ::Bootloader::BootloaderFactory.proposed
    config.propose
  else
    config = ::Bootloader::BootloaderFactory.system
    config.read
  end
  ::Bootloader::BootloaderFactory.current = config
  nil
end

#Summary(simple_mode: false) ⇒ Object

Display bootloader summary

Returns:

  • a list of summary lines



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# File 'src/modules/Bootloader.rb', line 225

def Summary(simple_mode: false)
  # kokso: additional warning that root partition is nfs type -> bootloader will not be installed
  if BootStorage.boot_filesystem.is?(:nfs)
    log.info "Bootloader::Summary() -> Boot partition is nfs type, bootloader will not be installed."
    return [_("The boot partition is of type NFS. Bootloader cannot be installed.")]
  end

  ::Bootloader::BootloaderFactory.current.summary(simple_mode: simple_mode)
end

#testAbort ⇒ Boolean

Check whether abort was pressed

Returns:

  • (Boolean) —

    true if abort was pressed



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# File 'src/modules/Bootloader.rb', line 65

def testAbort
  return false if Mode.commandline

  UI.PollInput == :abort
end

#Update ⇒ Boolean

Update the whole configuration

Returns:

  • (Boolean) —

    true on success



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# File 'src/modules/Bootloader.rb', line 237

def Update
  Write() # write also reads the configuration and updates it
end

#Write ⇒ Boolean

Write bootloader settings to disk

Returns:

  • (Boolean) —

    true on success



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# File 'src/modules/Bootloader.rb', line 243

def Write
  ReadOrProposeIfNeeded()

  mark_as_changed

  log.info "Writing bootloader configuration"

  stages = [
    _("Prepare system"),
    _("Create initrd"),
    _("Save boot loader configuration")
  ]
  titles = [
    _("Preparing system..."),
    _("Creating initrd..."),
    _("Saving boot loader configuration...")
  ]

  if Mode.normal
    Progress.New(_("Saving Boot Loader Configuration"), " ", stages.size, stages, titles, "")
    Progress.NextStage
  else
    Progress.Title(titles[0])
  end

  # Prepare system
  progress_state = Progress.set(false)
  if !::Bootloader::BootloaderFactory.current.prepare
    log.error("System could not be prepared successfully, required packages were not installed")
    Yast2::Popup.show(_("Cannot continue without install required packages"))
    return false
  end
  Progress.set(progress_state)

  transactional = Package.IsTransactionalSystem

  # Create initrd
  Progress.NextStage
  Progress.Title(titles[1]) unless Mode.normal

  write_initrd || log.error("Error occurred while creating initrd") if !transactional

  # Save boot loader configuration
  Progress.NextStage
  Progress.Title(titles[2]) unless Mode.normal
  ::Bootloader::BootloaderFactory.current.write(etc_only: transactional)
  if transactional
    # all writing to target is done in specific transactional command
    Yast::Execute.on_target!("transactional-update", "--continue", "bootloader")
  end

  true
end