Enables or disables the mechanism that ejects media. Disabling the mechanism locks the drive.
To perform this operation, call the DeviceIoControl function with the following parameters.
BOOL DeviceIoControl( (HANDLE) hDevice, // handle to device IOCTL_STORAGE_EJECTION_CONTROL, // dwIoControlCode(LPVOID) lpInBuffer, // input buffer (DWORD) nInBufferSize, // size of input buffer NULL, // lpOutBuffer0, // nOutBufferSize(LPDWORD) lpBytesReturned, // number of bytes returned (LPOVERLAPPED) lpOverlapped // OVERLAPPED structure );
Input Buffer Length
Output Buffer Length
Input / Output Buffer
Input / Output Buffer Length
Irp->IoStatus.Status is set to STATUS_SUCCESS if the request is successful.
Otherwise, Status to the appropriate error condition as a NTSTATUS code.
For more information, see NTSTATUS Values.
The driver tracks IOCTL_STORAGE_EJECTION_CONTROL requests by caller. It ignores requests to enable the ejection mechanism unless it has received a request to disable the ejection mechanism from the same caller. This prevents other callers from unlocking the drive.
|Minimum supported client||Windows XP|
|Minimum supported server||Windows Server 2003|
|Header||winioctl.h (include Windows.h)|