aio_fsync (3)
Leading comments
Copyright (c) 2003 Andries Brouwer (aeb@cwi.nl) %%%LICENSE_START(GPLv2+_DOC_FULL) This is free documentation; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. The GNU General Public License's references to "object code" and "executables" are to be interpreted as the output of any document formatting or typesetting system, including i...
NAME
aio_fsync - asynchronous file synchronizationSYNOPSIS
#include <aio.h>int aio_fsync(int op, struct aiocb *aiocbp);
Link with -lrt.
DESCRIPTION
The aio_fsync() function does a sync on all outstanding asynchronous I/O operations associated with aiocbp->aio_fildes. (See aio(7) for a description of the aiocb structure.)
More precisely, if
op
is
O_SYNC,
then all currently queued I/O operations shall be
completed as if by a call of
fsync(2),
and if
op
is
O_DSYNC,
this call is the asynchronous analog of
fdatasync(2).
Note that this is a request only; it does not wait for I/O completion.
Apart from aio_fildes, the only field in the structure pointed to by aiocbp that is used by this call is the aio_sigevent field (a sigevent structure, described in sigevent(7)), which indicates the desired type of asynchronous notification at completion. All other fields are ignored.
RETURN VALUE
On success (the sync request was successfully queued) this function returns 0. On error, -1 is returned, and errno is set appropriately.ERRORS
- EAGAIN
- Out of resources.
- EBADF
- aio_fildes is not a valid file descriptor open for writing.
- EINVAL
- Synchronized I/O is not supported for this file, or op is not O_SYNC or O_DSYNC.
- ENOSYS
- aio_fsync() is not implemented.
VERSIONS
The aio_fsync() function is available since glibc 2.1.ATTRIBUTES
For an explanation of the terms used in this section, see attributes(7).| Interface | Attribute | Value |
| aio_fsync() | Thread safety | MT-Safe |