# module Chef::Mixin::WindowsArchitectureHelper

### Public Instance Methods

assert_valid_windows_architecture!(architecture) click to toggle source

    # File lib/chef/mixin/windows_architecture_helper.rb, line 47
    def assert_valid_windows_architecture!(architecture)
      if ! valid_windows_architecture?(architecture)
        raise Chef::Exceptions::Win32ArchitectureIncorrect,
        "The specified architecture was not valid. It must be one of :i386 or :x86_64"
      end
    end

disable_wow64_file_redirection( node ) click to toggle source

    # File lib/chef/mixin/windows_architecture_helper.rb, line 58
    def disable_wow64_file_redirection( node )
      original_redirection_state = ['0'].pack('P')

      if ( ( node_windows_architecture(node) == :x86_64) && ::Chef::Platform.windows?)
        win32_wow_64_disable_wow_64_fs_redirection =
          ::Win32::API.new('Wow64DisableWow64FsRedirection', 'P', 'L', 'kernel32')

        succeeded = win32_wow_64_disable_wow_64_fs_redirection.call(original_redirection_state)

        if succeeded == 0
          raise Win32APIError "Failed to disable Wow64 file redirection"
        end

      end

      original_redirection_state
    end

is_i386_windows_process?() click to toggle source

    # File lib/chef/mixin/windows_architecture_helper.rb, line 54
    def is_i386_windows_process?
      Chef::Platform.windows? && 'X86'.casecmp(ENV['PROCESSOR_ARCHITECTURE']) == 0
    end

node_supports_windows_architecture?(node, desired_architecture) click to toggle source

    # File lib/chef/mixin/windows_architecture_helper.rb, line 37
    def node_supports_windows_architecture?(node, desired_architecture)
      assert_valid_windows_architecture!(desired_architecture)
      return (node_windows_architecture(node) == :x86_64 ||
              desired_architecture == :i386) ? true : false
    end

node_windows_architecture(node) click to toggle source

    # File lib/chef/mixin/windows_architecture_helper.rb, line 27
    def node_windows_architecture(node)
      node[:kernel][:machine].to_sym
    end

restore_wow64_file_redirection( node, original_redirection_state ) click to toggle source

    # File lib/chef/mixin/windows_architecture_helper.rb, line 76
    def restore_wow64_file_redirection( node, original_redirection_state )
      if ( (node_windows_architecture(node) == :x86_64) && ::Chef::Platform.windows?)
        win32_wow_64_revert_wow_64_fs_redirection =
          ::Win32::API.new('Wow64RevertWow64FsRedirection', 'P', 'L', 'kernel32')

        succeeded = win32_wow_64_revert_wow_64_fs_redirection.call(original_redirection_state)

        if succeeded == 0
          raise Win32APIError "Failed to revert Wow64 file redirection"
        end
      end
    end

valid_windows_architecture?(architecture) click to toggle source

    # File lib/chef/mixin/windows_architecture_helper.rb, line 43
    def valid_windows_architecture?(architecture)
      return (architecture == :x86_64) || (architecture == :i386)
    end

wow64_architecture_override_required?(node, desired_architecture) click to toggle source

    # File lib/chef/mixin/windows_architecture_helper.rb, line 31
    def wow64_architecture_override_required?(node, desired_architecture)
      is_i386_windows_process? &&
        node_windows_architecture(node) == :x86_64 &&
        desired_architecture == :x86_64
    end