aio_error(3) [netbsd man page]

AIO_ERROR(3)						   BSD Library Functions Manual 					      AIO_ERROR(3)

NAME

     aio_error -- retrieve error status of asynchronous I/O operation (REALTIME)

LIBRARY

     POSIX Real-time Library (librt, -lrt)

SYNOPSIS

     #include <aio.h>

     int
     aio_error(const struct aiocb *aiocbp);

DESCRIPTION

     The aio_error() system call returns the error status of the asynchronous I/O request associated with the structure pointed to by aiocbp.

RETURN VALUES

     If the asynchronous I/O request has completed successfully, aio_error() returns 0.  If the request has not yet completed, EINPROGRESS is
     returned.	If the request has completed unsuccessfully the error status is returned as described in read(2), write(2), or fsync(2).  On fail-
     ure, aio_error() returns -1 and sets errno to indicate the error condition.

ERRORS

     The aio_error() system call will fail if:

     [EINVAL]		The aiocb argument does not reference an outstanding asynchronous I/O request.

SEE ALSO

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

STANDARDS

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

HISTORY

     The aio_error() system call first appeared in NetBSD 5.0.

BSD
								   May 17, 2010 							       BSD

AIO_ERROR(3)						     Linux Programmer's Manual						      AIO_ERROR(3)

NAME

       aio_error - get error status of asynchronous I/O operation

SYNOPSIS

       #include <aio.h>

       int aio_error(const struct aiocb *aiocbp);

       Link with -lrt.

DESCRIPTION

       The  aio_error()  function  returns the error status for the asynchronous I/O request with control block pointed to by aiocbp.  (See aio(7)
       for a description of the aiocb structure.)

RETURN VALUE

       This function returns one of the following:

       *  EINPROGRESS, if the request has not been completed yet.

       *  ECANCELED, if the request was canceled.

       *  0, if the request completed successfully.

       *  A positive error number, if the asynchronous I/O operation failed.  This is the same value that would have  been  stored  in	the  errno
	  variable in the case of a synchronous read(2), write(2), fsync(2), or fdatasync(2) call.

ERRORS

       EINVAL aiocbp does not point at a control block for an asynchronous I/O request of which the return status (see aio_return(3)) has not been
	      retrieved yet.

       ENOSYS aio_error() is not implemented.

VERSIONS

       The aio_error() function is available since glibc 2.1.

ATTRIBUTES

   Multithreading (see pthreads(7))
       The aio_error() function is thread-safe.

CONFORMING TO

       POSIX.1-2001, POSIX.1-2008.

EXAMPLE

       See aio(7).

SEE ALSO

       aio_cancel(3), aio_fsync(3), aio_read(3), aio_return(3), aio_suspend(3), aio_write(3), lio_listio(3), aio(7)

COLOPHON

       This page is part of release 3.53 of the Linux man-pages project.  A description of the project, and information about reporting bugs,  can
       be found at http://www.kernel.org/doc/man-pages/.

								    2013-07-04							      AIO_ERROR(3)