40 lines
890 B
Python
40 lines
890 B
Python
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from ctypes import POINTER
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from ctypes import pointer
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from ctypes import WinDLL
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from ctypes.wintypes import BOOL
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from ctypes.wintypes import DWORD
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from ctypes.wintypes import HANDLE
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from fasteners.pywin32.pywintypes import OVERLAPPED
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kernel32 = WinDLL('kernel32', use_last_error=True)
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_ = pointer
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# Refer: https://docs.microsoft.com/en-us/windows/win32/api/fileapi/nf-fileapi-lockfileex
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LockFileEx = kernel32.LockFileEx
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LockFileEx.argtypes = [
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HANDLE,
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DWORD,
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DWORD,
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DWORD,
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DWORD,
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POINTER(OVERLAPPED),
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]
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LockFileEx.restype = BOOL
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# Refer: https://docs.microsoft.com/en-us/windows/win32/api/fileapi/nf-fileapi-unlockfile
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UnlockFileEx = kernel32.UnlockFileEx
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UnlockFileEx.argtypes = [
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HANDLE,
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DWORD,
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DWORD,
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DWORD,
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POINTER(OVERLAPPED),
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]
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UnlockFileEx.restype = BOOL
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# Errors/flags
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GetLastError = kernel32.GetLastError
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ERROR_LOCK_VIOLATION = 33
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