The
aio_fsync()
function does a sync on all outstanding asynchronous I/O operations
associated with
aiocbp->aio_fildes.
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 --- this call 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 struct sigevent) that 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
No synchronized I/O for this file is supported, or
op
is not
O_SYNC
or
O_DSYNC.
This page is part of release 3.14 of the Linux
man-pages
project.
A description of the project,
and information about reporting bugs,
can be found at
http://www.kernel.org/doc/man-pages/.
