aio_return(3) [linux man page]
AIO_RETURN(3) Linux Programmer's Manual AIO_RETURN(3) NAME
aio_return - get return status of asynchronous I/O operation SYNOPSIS
#include <aio.h> ssize_t aio_return(struct aiocb *aiocbp); Link with -lrt. DESCRIPTION
The aio_return() function returns the final return status for the asynchronous I/O request with control block pointed to by aiocbp. This function should be called only once for any given request, after aio_error(3) returns something other than EINPROGRESS. RETURN VALUE
If the asynchronous I/O operation has completed, this function returns the value that would have been returned in case of a synchronous read, write, or fsync request. Otherwise the return value is undefined. On error, the error value is returned. ERRORS
EINVAL aiocbp does not point at a control block for an asynchronous I/O request of which the return status has not been retrieved yet. CONFORMING TO
POSIX.1-2001. SEE ALSO
aio_cancel(3), aio_error(3), aio_fsync(3), aio_read(3), aio_suspend(3), aio_write(3) COLOPHON
This page is part of release 3.27 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/. 2003-11-14 AIO_RETURN(3)
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AIO_RETURN(3) Linux Programmer's Manual AIO_RETURN(3) NAME
aio_return - get return status of asynchronous I/O operation SYNOPSIS
#include <aio.h> ssize_t aio_return(struct aiocb *aiocbp); Link with -lrt. DESCRIPTION
The aio_return() function returns the final return status for the asynchronous I/O request with control block pointed to by aiocbp. (See aio(7) for a description of the aiocb structure.) This function should be called only once for any given request, after aio_error(3) returns something other than EINPROGRESS. RETURN VALUE
If the asynchronous I/O operation has completed, this function returns the value that would have been returned in case of a synchronous read(2), write(2), fsync(2) or fdatasync(2), call. If the asynchronous I/O operation has not yet completed, the return value and effect of aio_return() are undefined. ERRORS
EINVAL aiocbp does not point at a control block for an asynchronous I/O request of which the return status has not been retrieved yet. ENOSYS aio_return() is not implemented. VERSIONS
The aio_return() function is available since glibc 2.1. CONFORMING TO
POSIX.1-2001, POSIX.1-2008. EXAMPLE
See aio(7). SEE ALSO
aio_cancel(3), aio_error(3), aio_fsync(3), aio_read(3), aio_suspend(3), aio_write(3), lio_listio(3), aio(7) COLOPHON
This page is part of release 3.44 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/. 2012-05-08 AIO_RETURN(3)