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Function IoControl

Driver function IoControl is called by RTFDeviceIoControl and RTFRawDeviceIoControl:

int RTFAPI IoControl(void * DriverData, 
                     UINT   ControlCode, 
                     void * Buffer, 
                     UINT   Length);

Parameters

DriveData

Pointer to the DeviceData found in the device list for the device.

ControlCode

Function code specifying what function is to be performed.

Buffer

Pointer to a buffer passed by the application.

Length

Length of the buffer pointed to by parameter Buffer.

return value

If the function succeeds, it returns RTF_NO_ERROR or a ControlCode specific positive value. If it fails, the return value is a negative error code.

Function LowLevelFormat