| .\" Copyright (c) 2003 Andries Brouwer (aeb@cwi.nl) |
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| .TH AIO_FSYNC 3 2003-11-14 "" "Linux Programmer's Manual" |
| .SH NAME |
| aio_fsync \- asynchronous file synchronization |
| .SH SYNOPSIS |
| .sp |
| .B "#include <aio.h>" |
| .sp |
| .BI "int aio_fsync(int " op ", struct aiocb *" aiocbp ); |
| .sp |
| .SH DESCRIPTION |
| The |
| .BR aio_fsync () |
| function does a sync on all outstanding asynchronous I/O operations |
| associated with |
| .IR aiocbp->aio_fildes . |
| .LP |
| More precisely, if |
| .I op |
| is O_SYNC, then all currently queued I/O operations shall be |
| completed as if by a call of |
| .BR fsync (2), |
| and if |
| .I op |
| is O_DSYNC, this call is the asynchronous analog of |
| .BR fdatasync (2). |
| Note that this is a request only \(em this call does not wait |
| for I/O completion. |
| .LP |
| Apart from |
| .I aio_fildes |
| the only field in the structure pointed to by |
| .I aiocbp |
| that is used by this call is the |
| .I aio_sigevent |
| field (a struct sigevent) that indicates the desired type of |
| asynchronous notification at completion. |
| All other fields are ignored. |
| .SH "RETURN VALUE" |
| On success (the sync request was successfully queued) |
| this function returns 0. On error \-1 is returned, and |
| .I errno |
| is set appropriately. |
| .SH ERRORS |
| .TP |
| .B EAGAIN |
| Out of resources. |
| .TP |
| .B EBADF |
| .I aio_fildes |
| is not a valid file descriptor open for writing. |
| .TP |
| .B EINVAL |
| No synchronized I/O for this file is supported, or |
| .I op |
| is not O_SYNC or O_DSYNC. |
| .SH "CONFORMING TO" |
| POSIX 1003.1-2003 |
| .SH "SEE ALSO" |
| .BR aio_cancel (3), |
| .BR aio_error (3), |
| .BR aio_read (3), |
| .BR aio_return (3), |
| .BR aio_suspend (3), |
| .BR aio_write (3) |