IOCTL_DISK_CONTROLLER_NUMBER IOCTL (ntdddisk.h)
Retrieves the controller number and disk number for an IDE disk.
Major code
Input buffer
None.
Input buffer length
None.
Output buffer
The buffer at Irp->AssociatedIrp.SystemBuffer contains the DISK_CONTROLLER_NUMBER data.
Output buffer length
Parameters.DeviceIoControl.OutputBufferLength in the IO_STACK_LOCATION structure of the IRP indicates the size, in bytes, of the output buffer, which must be >= sizeof(DISK_CONTROLLER_NUMBER).
Status block
The Information field is set to sizeof(DISK_CONTROLLER_NUMBER).
The Status field is set to STATUS_SUCCESS if the operation is successful. One possible status value is STATUS_BUFFER_TOO_SMALL if the output buffer provided by the caller is too small.
Requirements
| Requirement | Value |
|---|---|
| Header | ntdddisk.h (include Ntdddisk.h) |