opensolaris man page for anocancel

anocancel(9F)                                              Kernel Functions for Drivers                                              anocancel(9F)

NAME
       anocancel - prevent cancellation of asynchronous I/O request

SYNOPSIS
       #include <sys/ddi.h>
       #include <sys/sunddi.h>

       int anocancel( );

INTERFACE LEVEL
       Solaris DDI specific (Solaris DDI).

DESCRIPTION
       anocancel()  should be used by drivers that do not support canceling asynchronous  I/O requests. anocancel() is passed as the driver cancel
       routine parameter to aphysio(9F).

RETURN VALUES
       anocancel() returns  ENXIO.

SEE ALSO
       aread(9E), awrite(9E), aphysio(9F)

       Writing Device Drivers

SunOS 5.10                                                          9 Nov 1994                                                       anocancel(9F)