def create_vhd(self, new_vhd_path, new_vhd_type, src_path=None,
max_internal_size=0, parent_path=None):
new_device_id = self._get_vhd_device_id(new_vhd_path)
vst = vdisk_struct.VIRTUAL_STORAGE_TYPE(
DeviceId=new_device_id,
VendorId=w_const.VIRTUAL_STORAGE_TYPE_VENDOR_MICROSOFT)
params = vdisk_struct.CREATE_VIRTUAL_DISK_PARAMETERS()
params.Version = w_const.CREATE_VIRTUAL_DISK_VERSION_2
params.Version2.MaximumSize = max_internal_size
params.Version2.ParentPath = parent_path
params.Version2.SourcePath = src_path
params.Version2.PhysicalSectorSizeInBytes = (
VIRTUAL_DISK_DEFAULT_PHYS_SECTOR_SIZE)
params.Version2.BlockSizeInBytes = (
w_const.CREATE_VHD_PARAMS_DEFAULT_BLOCK_SIZE)
params.Version2.SectorSizeInBytes = (
VIRTUAL_DISK_DEFAULT_SECTOR_SIZE)
handle = wintypes.HANDLE()
create_virtual_disk_flag = CREATE_VIRTUAL_DISK_FLAGS.get(
new_vhd_type, 0)
self._run_and_check_output(virtdisk.CreateVirtualDisk,
ctypes.byref(vst),
ctypes.c_wchar_p(new_vhd_path),
0,
None,
create_virtual_disk_flag,
0,
ctypes.byref(params),
None,
ctypes.byref(handle),
cleanup_handle=handle)
def create_pipe(self,
security_attributes=None,
size=0,
inherit_handle=False):
"""Create an anonymous pipe.
The main advantage of this method over os.pipe is that it allows
creating inheritable pipe handles (which is flawed on most Python
versions).
"""
r = wintypes.HANDLE()
w = wintypes.HANDLE()
if inherit_handle and not security_attributes:
security_attributes = wintypes.SECURITY_ATTRIBUTES()
security_attributes.bInheritHandle = inherit_handle
security_attributes.nLength = ctypes.sizeof(security_attributes)
self._run_and_check_output(
kernel32.CreatePipe, ctypes.byref(r), ctypes.byref(w),
ctypes.byref(security_attributes) if security_attributes else None,
size)
return r.value, w.value
def _open(self,
vhd_path,
open_flag=0,
open_access_mask=w_const.VIRTUAL_DISK_ACCESS_ALL,
open_params=None):
device_id = self._get_vhd_device_id(vhd_path)
vst = vdisk_struct.VIRTUAL_STORAGE_TYPE(
DeviceId=device_id,
VendorId=w_const.VIRTUAL_STORAGE_TYPE_VENDOR_MICROSOFT)
handle = wintypes.HANDLE()
self._run_and_check_output(virtdisk.OpenVirtualDisk, ctypes.byref(vst),
ctypes.c_wchar_p(vhd_path),
open_access_mask, open_flag, open_params,
ctypes.byref(handle))
return handle
# The following flags specify access rights that may be # requested when opening proccesses. # # Allows setting process limits. PROCESS_SET_QUOTA = 0x0100 # Allows terminating a process. PROCESS_TERMINATE = 0x0001 # Allows waiting for a process. SYNCHRONIZE = 0x00100000 # winioctl.h FILE_DEVICE_DISK = 7 # handleapi.h INVALID_HANDLE_VALUE = wintypes.HANDLE(-1).value # minwindef.h MAX_PATH = 260 # AccCtrl.h TRUSTEE_IS_NAME = 1 # Indicates a file or directory object. SE_FILE_OBJECT = 1 # --------- # ClusApi.h # --------- CLUSPROP_SYNTAX_NAME = 262147 CLUSPROP_SYNTAX_ENDMARK = 0 CLUSPROP_SYNTAX_LIST_VALUE_DWORD = 65538