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NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | ERRORS | VERSIONS | ATTRIBUTES | CONFORMING TO | EXAMPLE | SEE ALSO | COLOPHON |
AIO_RETURN(3) Linux Programmer's Manual AIO_RETURN(3)
aio_return - get return status of asynchronous I/O operation
#include <aio.h>
ssize_t aio_return(struct aiocb *aiocbp);
Link with -lrt.
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.
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. On
error, -1 is returned, and errno is set appropriately.
If the asynchronous I/O operation has not yet completed, the return
value and effect of aio_return() are undefined.
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.
The aio_return() function is available since glibc 2.1.
For an explanation of the terms used in this section, see
attributes(7).
┌─────────────┬───────────────┬─────────┐
│Interface │ Attribute │ Value │
├─────────────┼───────────────┼─────────┤
│aio_return() │ Thread safety │ MT-Safe │
└─────────────┴───────────────┴─────────┘
POSIX.1-2001, POSIX.1-2008.
See aio(7).
aio_cancel(3), aio_error(3), aio_fsync(3), aio_read(3),
aio_suspend(3), aio_write(3), lio_listio(3), aio(7)
This page is part of release 4.12 of the Linux man-pages project. A
description of the project, information about reporting bugs, and the
latest version of this page, can be found at
https://www.kernel.org/doc/man-pages/.
2015-03-02 AIO_RETURN(3)
Pages that refer to this page: aio_cancel(3), aio_error(3), aio_fsync(3), aio_read(3), aio_suspend(3), aio_write(3), lio_listio(3), aio(7), signal-safety(7)