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aio_fsync(3) Library Functions Manual aio_fsync(3)
NAME
aio_fsync - asynchronous file synchronization
LIBRARY
Real-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 opera-
tions 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 ig-
nored.
RETURN VALUE
On success (the sync request was successfully queued) this function re-
turns 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 at-
tributes(7).
+--------------------------------------------+---------------+---------+
|Interface | Attribute | Value |
+--------------------------------------------+---------------+---------+
|aio_fsync() | Thread safety | MT-Safe |
+--------------------------------------------+---------------+---------+
STANDARDS
POSIX.1-2008.
HISTORY
glibc 2.1. POSIX.1-2001.
SEE ALSO
aio_cancel(3), aio_error(3), aio_read(3), aio_return(3), aio_sus-
pend(3), aio_write(3), lio_listio(3), aio(7), sigevent(7)
Linux man-pages 6.04 2023-03-30 aio_fsync(3)
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