aio_fsync - asynchronous file synchronization
op, struct aiocb *
Note that this is a request only; it does not wait for I/O completion.
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.
On success (the sync request was successfully queued) this function returns 0. On error, -1 is returned, and
errno is set appropriately.
Out of resources.
aio_fildes is not a valid file descriptor open for writing.
Synchronized I/O is not supported for this file, or
op is not O_SYNC or O_DSYNC.
aio_fsync() is not implemented.
The aio_fsync() function is available since glibc 2.1.
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