man/man3c/aiocancel.3c

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 aiocancel 3C "5 Feb 1997" "SunOS 5.11" "Standard C Library Functions"
 NAME
aiocancel - cancel an asynchronous operation
 SYNOPSIS

#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 immediately
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 currently 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 TYPEATTRIBUTE VALUE
MT-LevelSafe


 SEE ALSO

aioread(3C), aiowait(3C), 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.