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NAME

       aio_fsync - asynchronous file synchronization

SYNOPSIS

       #include <aio.h>

       int aio_fsync(int op, struct aiocb *aiocbp);

       Link with -lrt.

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(7)), 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 appropriately.

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.

VERSIONS

       The aio_fsync() function is available since glibc 2.1.

CONFORMING TO

       POSIX.1-2001, POSIX.1-2008.

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(7)

COLOPHON

       This page is part of release 3.35 of the Linux  man-pages  project.   A
       description  of  the project, and information about reporting bugs, can
       be found at http://man7.org/linux/man-pages/.

                                  2010-10-02                      AIO_FSYNC(3)