/*
* @implemented
*/
BOOL
WINAPI
UnlockFileEx(IN HANDLE hFile,
IN DWORD dwReserved,
IN DWORD nNumberOfBytesToUnLockLow,
IN DWORD nNumberOfBytesToUnLockHigh,
IN LPOVERLAPPED lpOverlapped)
{
LARGE_INTEGER BytesToUnLock, StartAddress;
NTSTATUS Status;
/* Is this a console handle? */
if (IsConsoleHandle(hFile))
{
/* Can't "unlock" a console! */
BaseSetLastNTError(STATUS_INVALID_HANDLE);
return FALSE;
}
/* This parameter should be zero */
if (dwReserved)
{
/* Fail since it isn't */
SetLastError(ERROR_INVALID_PARAMETER);
return FALSE;
}
/* Convert to NT format and call the native function */
BytesToUnLock.u.LowPart = nNumberOfBytesToUnLockLow;
BytesToUnLock.u.HighPart = nNumberOfBytesToUnLockHigh;
StartAddress.u.LowPart = lpOverlapped->Offset;
StartAddress.u.HighPart = lpOverlapped->OffsetHigh;
Status = NtUnlockFile(hFile,
(PIO_STATUS_BLOCK)lpOverlapped,
&StartAddress,
&BytesToUnLock,
0);
if (!NT_SUCCESS(Status))
{
/* Convert the error and fail */
BaseSetLastNTError(Status);
return FALSE;
}
/* All good */
return TRUE;
}
static int OnLockUnlockFile(HWND hDlg, int nReadWriteType)
{
TFileTestData * pData = GetDialogData(hDlg);
TApcReadWrite * pApc;
LARGE_INTEGER ByteOffset = {0};
LARGE_INTEGER LockLength = {0};
NTSTATUS Status;
int nError = ERROR_SUCCESS;
// Get the start position
DlgText2Hex64(hDlg, IDC_BYTE_OFFSET, &ByteOffset.QuadPart);
DlgText2Hex32(hDlg, IDC_LENGTH, &LockLength.LowPart);
assert((LONGLONG)pData->cbFileData >= LockLength.QuadPart);
// Create new APC entry
pApc = (TApcReadWrite *)CreateApcEntry(pData, APC_TYPE_READ_WRITE, sizeof(TApcReadWrite));
if(pApc != NULL)
{
// Perform the I/O operation
switch(nReadWriteType)
{
case IDC_LOCK_FILE:
// Perform the lock operation using LockFile
if(!LockFile(pData->hFile, ByteOffset.LowPart, ByteOffset.HighPart, LockLength.LowPart, LockLength.HighPart))
nError = GetLastError();
break;
case IDC_UNLOCK_FILE:
// Perform the unlock operation using UnlockFile
if(!UnlockFile(pData->hFile, ByteOffset.LowPart, ByteOffset.HighPart, LockLength.LowPart, LockLength.HighPart))
nError = GetLastError();
break;
case IDC_NTLOCK_FILE:
// Remember that this is a native call
pApc->bNativeCall = false;
// Perform the lock operation using NtLockFile
Status = NtLockFile(pData->hFile,
pApc->hEvent,
NULL,
NULL,
&pApc->IoStatus,
&ByteOffset,
&LockLength,
0,
TRUE,
TRUE);
// If the lock operation ended with STATUS_PENDING, queue the APC
if(Status == STATUS_PENDING)
{
SetResultInfo(hDlg, ERROR_IO_PENDING);
InsertApcEntry(pData, pApc);
return TRUE;
}
// Save the error
nError = RtlNtStatusToDosError(Status);
break;
case IDC_NTUNLOCK_FILE:
// Perform the unlock operation using NtUnlockFile
Status = NtUnlockFile(pData->hFile,
&pApc->IoStatus,
&ByteOffset,
&LockLength,
0);
// Save the error
assert(Status != STATUS_PENDING);
nError = RtlNtStatusToDosError(Status);
break;
}
// Set the information about the operation
SetResultInfo(hDlg, nError);
FreeApcEntry(pApc);
}
else
{
SetResultInfo(hDlg, GetLastError());
}
return TRUE;
}
