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NetBSD 6.1.5 - man page for aio_return (netbsd section 3)

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AIO_RETURN(3)			   BSD Library Functions Manual 		    AIO_RETURN(3)

NAME
     aio_return -- retrieve return status of asynchronous I/O operation (REALTIME)

LIBRARY
     POSIX Real-time Library (librt, -lrt)

SYNOPSIS
     #include <aio.h>

     ssize_t
     aio_return(struct aiocb *aiocbp);

DESCRIPTION
     The aio_return() system call returns the final status of the asynchronous I/O request asso-
     ciated with the structure pointed to by aiocbp.

     The aio_return() system call should only be called once, to obtain the final status of an
     asynchronous I/O operation once it has completed (aio_error(3) returns something other than
     EINPROGRESS).

RETURN VALUES
     If the asynchronous I/O request has completed, the status is returned as described in
     read(2), write(2), or fsync(2).  Otherwise, aio_return() returns -1 and sets errno to indi-
     cate the error condition.

ERRORS
     The aio_return() system call will fail if:

     [EINVAL]		The aiocbp argument does not reference a completed asynchronous I/O
			request.

SEE ALSO
     fsync(2), read(2), write(2), aio(3)

STANDARDS
     The aio_return() system call is expected to conform to the IEEE Std 1003.1-2001
     (``POSIX.1'') standard.

HISTORY
     The aio_return() system call first appeared in NetBSD 5.0.

BSD					 August 13, 2011				      BSD
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