aiocancel(3AIO) 					Asynchronous I/O Library Functions					   aiocancel(3AIO)

NAME

       aiocancel - cancel an asynchronous operation

SYNOPSIS

       cc [ flag ... ] file ... -laio [ library ... ]
       #include <sys/asynch.h>

       int aiocancel(aio_result_t *resultp);

DESCRIPTION

       aiocancel()  cancels  the asynchronous operation associated with the result buffer pointed to by resultp. It may not be possible to immedi-
       ately cancel an operation which is in progress and in this case, aiocancel() will not wait to cancel it.

       Upon successful completion, aiocancel() returns	0 and the requested operation is cancelled.  The application will not  receive	the  SIGIO
       completion signal for an asynchronous operation that is successfully cancelled.

RETURN VALUES

       Upon successful completion, aiocancel() returns 0. Upon failure, aiocancel() returns -1 and sets errno to indicate the error.

ERRORS

       aiocancel() will fail if any of the following are true:

       EACCES	       The  parameter  resultp	does not correspond to any outstanding asynchronous operation, although there is at least one cur-
		       rently outstanding.

       EFAULT	       resultp points to an address outside the address space of the requesting process.  See NOTES.

       EINVAL	       There are not any outstanding requests to cancel.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |MT-Level		     |Safe			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       aioread(3AIO), aiowait(3AIO), attributes(5)

NOTES

       Passing an illegal address as resultp will result in setting errno to EFAULT only if it is detected by the application process.

SunOS 5.10							    5 Mar 1997							   aiocancel(3AIO)