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FSCTL_IS_VOLUME_OWNED_BYCSVFS IOCTL (winioctl.h)

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Determines whether a volume is locked by CSVFS.

To perform this operation, call the DeviceIoControl function with the following parameters.

BOOL DeviceIoControl(
  (HANDLE) hDevice,                 // handle to device
  FSCTL_IS_VOLUME_OWNED_BYCSVFS,    // dwIoControlCode
  NULL,                             // input buffer
  0,                                // size of input buffer
  (LPVOID) lpOutBuffer,             // lpOutBuffer
  (DWORD) nOutBufferSize,           // nOutBufferSize
  (LPDWORD) lpBytesReturned,        // number of bytes returned
  (LPOVERLAPPED) lpOverlapped       // OVERLAPPED structure
);

Remarks

If the volume is locked on behalf of CSVFS, the control code returns information that is sent to an NTFS volume. If the volume is locked (using FSCTL_LOCK_VOLUME) from a request that originates from CSVFS, then the CSV_IS_OWNED_BY_CSVFS structure's OwnedByCSVFS member has a value of TRUE.

Requirements

Requirement Value
Minimum supported client None supported
Minimum supported server Windows Server 2012 [desktop apps only]
Header winioctl.h (include Windows.h)

See also