Name
aio_fsync — asynchronous file synchronization
Synopsis
#include <aio.h>
int
aio_fsync( |
int op, |
struct aiocb *aiocbp); |
![[Note]](../stylesheet/note.png) |
Note |
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Link with |
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 to indicate the
error.
ERRORS
- EAGAIN
-
Out of resources.
- EBADF
-
aio_fildesis not a valid file descriptor open for writing. - EINVAL
-
Synchronized I/O is not supported for this file, or
opis notO_SYNCorO_DSYNC. - ENOSYS
-
aio_fsync() is not implemented.
ATTRIBUTES
For an explanation of the terms used in this section, see attributes(7).
| Interface | Attribute | Value |
aio_fsync() |
Thread safety | MT-Safe |
SEE ALSO
aio_cancel(3), aio_error(3), aio_read(3), aio_return(3), aio_suspend(3), aio_write(3), lio_listio(3), aio(7), sigevent(7)