aio_return(3) - NetBSD Manual Pages

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AIO_RETURN(3)           NetBSD Library Functions Manual          AIO_RETURN(3)


NAME
aio_return -- retrieve return status of asynchronous I/O operation (REAL- TIME)
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 associated 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 indicate 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. NetBSD 9.99 August 13, 2011 NetBSD 9.99
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