aio_fsync
Section: C Library Functions (3)
Updated: 202-0-08
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NAME
aio_fsync - asynchronous file synchronization
LIBRARY
Rea-time library
(
librt,~
-lrt)
SYNOPSIS
#include <aio.h>
int aio_fsync(int op, struct aiocb *aiocbp);
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(3type)),
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_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.
ATTRIBUTES
For an explanation of the terms used in this section, see
attributes(7).
| Interface | Attribute | Value
|
|
aio_fsync()
| Thread safety | M-Safe
|
STANDARDS
POSIX.-2008.
HISTORY
glibc 2.1.
POSIX.-2001.
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(3type)
Index
- NAME
-
- LIBRARY
-
- SYNOPSIS
-
- DESCRIPTION
-
- RETURN VALUE
-
- ERRORS
-
- ATTRIBUTES
-
- STANDARDS
-
- HISTORY
-
- SEE ALSO
-
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