class CFA::Grub2::Default
Represents grub configuration in /etc/default/grub Main features:
-
Do not overwrite files
-
When setting value first try to just change value if key already exists
-
When key is not set, then try to find commented out line with key and replace it with real config
-
When even commented out code is not there, then append configuration to the end of file
Constants
- PATH
- VALID_TERMINAL_OPTIONS
Public Class Methods
# File lib/cfa/grub2/default.rb, line 31 def initialize(file_handler: nil) super(AugeasParser.new("sysconfig.lns"), PATH, file_handler: file_handler) end
Public Instance Methods
# File lib/cfa/grub2/default.rb, line 102 def cryptodisk @cryptodisk ||= BooleanValue.new("GRUB_ENABLE_CRYPTODISK", self, true_value: "y", false_value: "n") end
# File lib/cfa/grub2/default.rb, line 67 def kernel_params @kernel_params ||= KernelParams.new( value_for("GRUB_CMDLINE_LINUX_DEFAULT"), "GRUB_CMDLINE_LINUX_DEFAULT" ) end
# File lib/cfa/grub2/default.rb, line 48 def load super kernels = [kernel_params, xen_hypervisor_params, xen_kernel_params, recovery_params] kernels.each do |kernel| param_line = value_for(kernel.key) kernel.replace(param_line) if param_line end end
# File lib/cfa/grub2/default.rb, line 59 def os_prober @os_prober ||= BooleanValue.new( "GRUB_DISABLE_OS_PROBER", self, # grub key is disable, so use reverse logic true_value: "false", false_value: "true" ) end
# File lib/cfa/grub2/default.rb, line 94 def recovery_entry @recovery_entry ||= BooleanValue.new( "GRUB_DISABLE_RECOVERY", self, # grub key is disable, so use reverse logic true_value: "false", false_value: "true" ) end
# File lib/cfa/grub2/default.rb, line 87 def recovery_params @recovery_params ||= KernelParams.new( value_for("GRUB_CMDLINE_LINUX_RECOVERY"), "GRUB_CMDLINE_LINUX_RECOVERY" ) end
# File lib/cfa/grub2/default.rb, line 36 def save # serialize kernel params object before save kernels = [@kernel_params, @xen_hypervisor_params, @xen_kernel_params, @recovery_params] kernels.each do |params| # FIXME: this empty prevent writing explicit empty kernel params. generic_set(params.key, params.serialize) if params && !params.empty? end super end
# File lib/cfa/grub2/default.rb, line 155 def serial_console value_for("GRUB_SERIAL_COMMAND") end
Sets GRUB_SERIAL_COMMAND option
Updates GRUB_SERIAL_COMMAND with given value, also enables serial console in GRUB_TERMINAL
@param value [String] value for GRUB_SERIAL_COMMAND
# File lib/cfa/grub2/default.rb, line 150 def serial_console=(value) self.terminal = (terminal || []) | [:serial] generic_set("GRUB_SERIAL_COMMAND", value) end
Reads value of GRUB_TERMINAL from /etc/default/grub
GRUB_TERMINAL option allows multiple values as space separated string
@return [Array<Symbol>, nil] an array of symbols where each symbol
represents supported terminal definition nil if value is undefined or empty
# File lib/cfa/grub2/default.rb, line 115 def terminal values = value_for("GRUB_TERMINAL") return nil if values.nil? || values.empty? values.split.map do |value| msg = "unknown GRUB_TERMINAL option #{value.inspect}" raise msg if !VALID_TERMINAL_OPTIONS.include?(value.to_sym) value.to_sym end end
Sets GRUB_TERMINAL option
Raises an ArgumentError exception in case of invalid value
@param values [Array<Symbol>, nil] list of accepted terminal values
(@see VALID_TERMINAL_OPTIONS)
# File lib/cfa/grub2/default.rb, line 134 def terminal=(values) values = [] if values.nil? msg = "A value is invalid: #{values.inspect}" invalid = values.any? { |v| !VALID_TERMINAL_OPTIONS.include?(v) } raise ArgumentError, msg if invalid generic_set("GRUB_TERMINAL", values.join(" ")) end
# File lib/cfa/grub2/default.rb, line 73 def xen_hypervisor_params @xen_hypervisor_params ||= KernelParams.new( value_for("GRUB_CMDLINE_XEN_DEFAULT"), "GRUB_CMDLINE_XEN_DEFAULT" ) end
# File lib/cfa/grub2/default.rb, line 80 def xen_kernel_params @xen_kernel_params ||= KernelParams.new( value_for("GRUB_CMDLINE_LINUX_XEN_REPLACE_DEFAULT"), "GRUB_CMDLINE_LINUX_XEN_REPLACE_DEFAULT" ) end
Private Instance Methods
# File lib/cfa/grub2/default.rb, line 161 def value_for(key) data[key].respond_to?(:value) ? data[key].value : data[key] end