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#
# Copyright:: 2012-2018, Nordstrom, Inc.
# Copyright:: 2017-2018, Chef Software, Inc.
#
# 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/resource"
class Chef
class Resource
class WindowsPagefile < Chef::Resource
resource_name :windows_pagefile
provides :windows_pagefile
description "Use the windows_pagefile resource to configure pagefile settings on Windows."
introduced "14.0"
property :path, String,
coerce: proc { |x| x.tr("/", '\\') },
description: "The path to the pagefile if different from the resource name.",
name_property: true
property :system_managed, [TrueClass, FalseClass],
description: "Configures whether the system manages the pagefile size."
property :automatic_managed, [TrueClass, FalseClass],
description: "Enable automatic management of pagefile initial and maximum size. Setting this to true ignores 'initial_size' and 'maximum_size' properties.",
default: false
property :initial_size, Integer,
description: "Initial size of the pagefile in megabytes."
property :maximum_size, Integer,
description: "Maximum size of the pagefile in megabytes."
action :set do
description "Configures the default pagefile, creating if it doesn't exist."
pagefile = new_resource.path
initial_size = new_resource.initial_size
maximum_size = new_resource.maximum_size
system_managed = new_resource.system_managed
automatic_managed = new_resource.automatic_managed
if automatic_managed
set_automatic_managed unless automatic_managed?
else
unset_automatic_managed if automatic_managed?
# Check that the resource is not just trying to unset automatic managed, if it is do nothing more
if (initial_size && maximum_size) || system_managed
validate_name
create(pagefile) unless exists?(pagefile)
if system_managed
set_system_managed(pagefile) unless max_and_min_set?(pagefile, 0, 0)
else
unless max_and_min_set?(pagefile, initial_size, maximum_size)
set_custom_size(pagefile, initial_size, maximum_size)
end
end
end
end
end
action :delete do
description "Deletes the specified pagefile."
validate_name
delete(new_resource.path) if exists?(new_resource.path)
end
action_class do
# make sure the provided name property matches the appropriate format
# we do this here and not in the property itself because if automatic_managed
# is set then this validation is not necessary / doesn't make sense at all
def validate_name
return if /^.:.*.sys/ =~ new_resource.path
raise "#{new_resource.path} does not match the format DRIVE:\\path\\file.sys for pagefiles. Example: C:\\pagefile.sys"
end
# See if the pagefile exists
#
# @param [String] pagefile path to the pagefile
# @return [Boolean]
def exists?(pagefile)
@exists ||= begin
Chef::Log.debug("Checking if #{pagefile} exists by runing: wmic.exe pagefileset where SettingID=\"#{get_setting_id(pagefile)}\" list /format:list")
cmd = shell_out("wmic.exe pagefileset where SettingID=\"#{get_setting_id(pagefile)}\" list /format:list", returns: [0])
cmd.stderr.empty? && (cmd.stdout =~ /SettingID=#{get_setting_id(pagefile)}/i)
end
end
# is the max/min pagefile size set?
#
# @param [String] pagefile path to the pagefile
# @param [String] min the minimum size of the pagefile
# @param [String] max the minimum size of the pagefile
# @return [Boolean]
def max_and_min_set?(pagefile, min, max)
@max_and_min_set ||= begin
Chef::Log.debug("Checking if #{pagefile} min: #{min} and max #{max} are set")
cmd = shell_out("wmic.exe pagefileset where SettingID=\"#{get_setting_id(pagefile)}\" list /format:list", returns: [0])
cmd.stderr.empty? && (cmd.stdout =~ /InitialSize=#{min}/i) && (cmd.stdout =~ /MaximumSize=#{max}/i)
end
end
# create a pagefile
#
# @param [String] pagefile path to the pagefile
def create(pagefile)
converge_by("create pagefile #{pagefile}") do
Chef::Log.debug("Running wmic.exe pagefileset create name=\"#{pagefile}\"")
cmd = shell_out("wmic.exe pagefileset create name=\"#{pagefile}\"")
check_for_errors(cmd.stderr)
end
end
# delete a pagefile
#
# @param [String] pagefile path to the pagefile
def delete(pagefile)
converge_by("remove pagefile #{pagefile}") do
Chef::Log.debug("Running wmic.exe pagefileset where SettingID=\"#{get_setting_id(pagefile)}\" delete")
cmd = shell_out("wmic.exe pagefileset where SettingID=\"#{get_setting_id(pagefile)}\" delete")
check_for_errors(cmd.stderr)
end
end
# see if the pagefile is automatically managed by Windows
#
# @return [Boolean]
def automatic_managed?
@automatic_managed ||= begin
Chef::Log.debug("Checking if pagefiles are automatically managed")
cmd = shell_out("wmic.exe computersystem where name=\"%computername%\" get AutomaticManagedPagefile /format:list")
cmd.stderr.empty? && (cmd.stdout =~ /AutomaticManagedPagefile=TRUE/i)
end
end
# turn on automatic management of all pagefiles by Windows
def set_automatic_managed
converge_by("set pagefile to Automatic Managed") do
Chef::Log.debug("Running wmic.exe computersystem where name=\"%computername%\" set AutomaticManagedPagefile=True")
cmd = shell_out("wmic.exe computersystem where name=\"%computername%\" set AutomaticManagedPagefile=True")
check_for_errors(cmd.stderr)
end
end
# turn off automatic management of all pagefiles by Windows
def unset_automatic_managed
converge_by("set pagefile to User Managed") do
Chef::Log.debug("Running wmic.exe computersystem where name=\"%computername%\" set AutomaticManagedPagefile=False")
cmd = shell_out("wmic.exe computersystem where name=\"%computername%\" set AutomaticManagedPagefile=False")
check_for_errors(cmd.stderr)
end
end
# set a custom size for the pagefile (vs the defaults)
#
# @param [String] pagefile path to the pagefile
# @param [String] min the minimum size of the pagefile
# @param [String] max the minimum size of the pagefile
def set_custom_size(pagefile, min, max)
converge_by("set #{pagefile} to InitialSize=#{min} & MaximumSize=#{max}") do
Chef::Log.debug("Running wmic.exe pagefileset where SettingID=\"#{get_setting_id(pagefile)}\" set InitialSize=#{min},MaximumSize=#{max}")
cmd = shell_out("wmic.exe pagefileset where SettingID=\"#{get_setting_id(pagefile)}\" set InitialSize=#{min},MaximumSize=#{max}", returns: [0])
check_for_errors(cmd.stderr)
end
end
# set a pagefile size to be system managed
#
# @param [String] pagefile path to the pagefile
def set_system_managed(pagefile)
converge_by("set #{pagefile} to System Managed") do
Chef::Log.debug("Running wmic.exe pagefileset where SettingID=\"#{get_setting_id(pagefile)}\" set InitialSize=0,MaximumSize=0")
cmd = shell_out("wmic.exe pagefileset where SettingID=\"#{get_setting_id(pagefile)}\" set InitialSize=0,MaximumSize=0", returns: [0])
check_for_errors(cmd.stderr)
end
end
def get_setting_id(pagefile)
split_path = pagefile.split('\\')
"#{split_path[1]} @ #{split_path[0]}"
end
# raise if there's an error on stderr on a shellout
def check_for_errors(stderr)
raise stderr.chomp unless stderr.empty?
end
end
end
end
end
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