AIO_FSYNC(3) Linux Programmer s Manual AIO_FSYNC(3)
NAME aio_fsync - asynchronous file synchronization
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.
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 this call does not wait for I/O comple- tion.
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.
CONFORMING TO POSIX.1-2001
SEE ALSO aio_cancel(3), aio_error(3), aio_read(3), aio_return(3), aio_sus- pend(3), aio_write(3)