Re: cdrom ioctls

"Also sprach Esmont Alexander:"
> I have one problem with netblock - some cdrom ioctls have not right
>  processing.  For example: CDROM_DRIVE_STATUS and CDROM_DISK_STATUS must
>  return drive and disk status accordingly, but return 0 always.
> 
>  Please, prompt me what and where change to correct working of that
>  ioctls?


You need to read the enbd_ioctl_table.h file (2.6 kernel).

      { CDROM_DRIVE_STATUS, _NEW_IOW(CDROM_DRIVE_STATUS, int), },
      { CDROM_DISC_STATUS, _NEW_IO(CDROM_DISC_STATUS), },


Which says that the first is a write of an int-sized datum to the
kernel (such ioctls can only return success or failure, 0 or -ve value),
and the second is a call that neither expects an argument nor returns a
result (it will be 0 or -ve for error).

Is that not the case? In that casechange and tell me about it.

Peter