Class: FFI::VixDiskLib::DiskInfo

Inherits:
Object
  • Object
show all
Extended by:
API
Defined in:
lib/ffi-vix_disk_lib/disk_info.rb

Constant Summary

Constants included from API

API::AdapterType, API::ConnectParams, API::CredType, API::DiskType, API::HWVERSION_CURRENT, API::HWVERSION_ESX30, API::HWVERSION_WORKSTATION_4, API::HWVERSION_WORKSTATION_5, API::HWVERSION_WORKSTATION_6, API::LOADED_LIBRARY, API::VERSION, API::VIXDISKLIB_FLAG_OPEN_READ_ONLY, API::VIXDISKLIB_FLAG_OPEN_SINGLE_LINK, API::VIXDISKLIB_FLAG_OPEN_UNBUFFERED, API::VIXDISKLIB_SECTOR_SIZE, API::VixErrorType

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from API

ProgressFunc, attach, attach_function, check_repair, cleanup, clone, close, connect, connect_ex, create, create_child, defragment, disconnect, end_access, enum, evaluate_versioned_connect_params, exit, free_connect_params, free_error_text, get_connect_params, get_error_text, get_info, get_metadata_keys, get_transport_mode, grow, init, initEx, is_attach_possible, list_transport_modes, load_error, open, prepare_for_access, read, read_metadata, rename, shrink, space_needed_for_clone, unlink, vix_error_code, vix_failed?, vix_succeeded?, write, write_metadata

Constructor Details

#initialize(disk_handle) ⇒ DiskInfo

Initialize a hash with the disk info for the specified handle using the VixDiskLib_GetInfo method. This is a helper class for the VixDiskLib::Api::get_info method.



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# File 'lib/ffi-vix_disk_lib/disk_info.rb', line 17

def initialize(disk_handle)
  ruby_info = {}
  info = FFI::MemoryPointer.new :pointer
  vix_error = API.get_info(disk_handle, info)
  ApiWrapper.check_error(vix_error, __method__)
  real_info = info.get_pointer(0)

  ruby_info[:biosGeo]             = {}
  ruby_info[:physGeo]             = {}
  bios_offset                     = API::Info.offset_of(:biosGeo)
  phys_offset                     = API::Info.offset_of(:biosGeo)
  ruby_info[:biosGeo][:cylinders] = geometry_attribute(real_info, bios_offset, :cylinders)
  ruby_info[:biosGeo][:heads]     = geometry_attribute(real_info, bios_offset, :heads)
  ruby_info[:biosGeo][:sectors]   = geometry_attribute(real_info, bios_offset, :sectors)
  ruby_info[:physGeo][:cylinders] = geometry_attribute(real_info, phys_offset, :cylinders)
  ruby_info[:physGeo][:heads]     = geometry_attribute(real_info, phys_offset, :heads)
  ruby_info[:physGeo][:sectors]   = geometry_attribute(real_info, phys_offset, :sectors)
  ruby_info[:capacity]            = real_info.get_uint64(API::Info.offset_of(:capacity))
  ruby_info[:adapterType]         = real_info.get_int(API::Info.offset_of(:adapterType))
  ruby_info[:numLinks]            = real_info.get_int(API::Info.offset_of(:numLinks))

  parent_info = real_info + API::Info.offset_of(:parentFileNameHint)
  parent_info_str = parent_info.read_pointer
  ruby_info[:parentFileNameHint]  = parent_info_str.read_string unless parent_info_str.null?
  uuid_info_str = (real_info + API::Info.offset_of(:uuid)).read_pointer
  ruby_info[:uuid]                = uuid_info_str.read_string unless uuid_info_str.null?
  @info = ruby_info
end

Instance Attribute Details

#info ⇒ Object (readonly)

Returns the value of attribute info.



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# File 'lib/ffi-vix_disk_lib/disk_info.rb', line 6

def info
  @info
end

Instance Method Details

#geometry_attribute(info, offset_value, attribute) ⇒ Object 



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# File 'lib/ffi-vix_disk_lib/disk_info.rb', line 8

def geometry_attribute(info, offset_value, attribute)
  info.get_uint32(offset_value + API::Geometry.offset_of(attribute))
end