Module: Chef::DSL::RebootPending

Includes:
PlatformIntrospection, RegistryHelper
Included in:
Recipe, Platform::Rebooter, Resource
Defined in:
lib/chef/dsl/reboot_pending.rb

Instance Method Summary collapse

Methods included from PlatformIntrospection

#docker?, #platform?, #platform_family?, #value_for_platform, #value_for_platform_family

Methods included from RegistryHelper

#registry_data_exists?, #registry_get_subkeys, #registry_get_values, #registry_has_subkeys?, #registry_key_exists?, #registry_value_exists?

Instance Method Details

#reboot_pending?Boolean

Returns true if the system needs a reboot or is expected to reboot Note that we will silently miss any other platform-specific reboot notices besides Windows+Ubuntu.



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# File 'lib/chef/dsl/reboot_pending.rb', line 31

def reboot_pending?
  # don't break when used as a mixin in contexts without #node (e.g. specs).
  if respond_to?(:node, true) && node.run_context.reboot_requested?
    true
  elsif platform?("windows")
    # PendingFileRenameOperations contains pairs (REG_MULTI_SZ) of filenames that cannot be updated
    # due to a file being in use (usually a temporary file and a system file)
    # \??\c:\temp\test.sys!\??\c:\winnt\system32\test.sys
    # http://technet.microsoft.com/en-us/library/cc960241.aspx
    registry_value_exists?('HKLM\SYSTEM\CurrentControlSet\Control\Session Manager', { :name => "PendingFileRenameOperations" }) ||

    # RebootRequired key contains Update IDs with a value of 1 if they require a reboot.
    # The existence of RebootRequired alone is sufficient on my Windows 8.1 workstation in Windows Update
      registry_key_exists?('HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\WindowsUpdate\Auto Update\RebootRequired') ||

    # Vista + Server 2008 and newer may have reboots pending from CBS
      registry_key_exists?('HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Component Based Servicing\RebootPending') ||

    # The mere existence of the UpdateExeVolatile key should indicate a pending restart for certain updates
    # http://support.microsoft.com/kb/832475
      Chef::Platform.windows_server_2003? &&
        (registry_key_exists?('HKLM\SOFTWARE\Microsoft\Updates\UpdateExeVolatile') &&
        !registry_get_values('HKLM\SOFTWARE\Microsoft\Updates\UpdateExeVolatile').select { |v| v[:name] == "Flags" }[0].nil? &&
        [1, 2, 3].include?(registry_get_values('HKLM\SOFTWARE\Microsoft\Updates\UpdateExeVolatile').select { |v| v[:name] == "Flags" }[0][:data]))
  elsif platform?("ubuntu")
    # This should work for Debian as well if update-notifier-common happens to be installed. We need an API for that.
    File.exists?("/var/run/reboot-required")
  else
    false
  end
end