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# Author:: Bryan McLellan <btm@loftninjas.org>
# Author:: Seth Chisamore <schisamo@chef.io>
# Copyright:: Copyright 2011-2016, Chef Software, Inc.
# License:: Apache License, Version 2.0
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
require "chef/dsl/platform_introspection"
require "chef/dsl/registry_helper"
class Chef
module DSL
module RebootPending
include Chef::DSL::RegistryHelper
include Chef::DSL::PlatformIntrospection
# 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.
def reboot_pending?
# don't break when used as a mixin in contexts without #node (e.g. specs).
if self.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
end
end
end
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