test_dokan.py

import os
from fs.osfs import OSFS
from fs.expose import dokan
from fs.expose.dokan.libdokan import LPDWORD

import ctypes
from ctypes.wintypes import BOOL, LPWSTR, DWORD


advapi32 = ctypes.windll.advapi32

class SECURITY_DESCRIPTOR(ctypes.Structure): pass

PSECURITY_DESCRIPTOR = ctypes.POINTER(SECURITY_DESCRIPTOR)
PPSECURITY_DESCRIPTOR = ctypes.POINTER(PSECURITY_DESCRIPTOR)

SECURITY_INFORMATION = DWORD
PSECURITY_INFORMATION = ctypes.POINTER(SECURITY_INFORMATION)

GetFileSecurity = ctypes.windll.advapi32.GetFileSecurityW
GetFileSecurity.restype = BOOL
GetFileSecurity.argtypes = (
    LPWSTR,                     # _In_ LPCTSTR lpFileName,
    SECURITY_INFORMATION,       # _In_ SECURITY_INFORMATION RequestedInformation,
    PSECURITY_DESCRIPTOR,       # _Out_opt_ PSECURITY_DESCRIPTOR pSecurityDescriptor,
    DWORD,                      # _In_ DWORD nLength,
    LPDWORD,                     # _Out_ LPDWORD lpnLengthNeeded
)

STATUS_BUFFER_OVERFLOW = 0x80000005


class MyOperations(dokan.FSOperations):
    @dokan.handle_fs_errors
    def GetFileSecurity(self, path, securityinformation, securitydescriptor, securitydescriptorlength, neededlength,
                        info):
        securitydescriptor = ctypes.cast(securitydescriptor, PSECURITY_DESCRIPTOR)
        path = self._dokanpath2pyfs(path)
        if self.fs.isdir(path):
            res = GetFileSecurity(
                os.path.expanduser('~'),
                ctypes.cast(securityinformation, PSECURITY_INFORMATION)[0],
                securitydescriptor,
                securitydescriptorlength,
                neededlength,
            )
            return dokan.STATUS_SUCCESS if res else STATUS_BUFFER_OVERFLOW

        return dokan.STATUS_NOT_IMPLEMENTED



fs = OSFS(r'D:\Test', create = True)


mount_point = 'p:\\'
try:
    dokan.unmount(mount_point)
except OSError:
    pass
dokan.mount(
    fs, mount_point,
    foreground = True,
    numthreads = 16,
    FSOperationsClass = MyOperations,
)