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aio_fsync(3)

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);

       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 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 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.

       ENOSYS aio_fsync() is not implemented.

VERSIONS
       The aio_fsync() function is available since glibc 2.1.

ATTRIBUTES
       For an explanation of the terms  used  in  this  section,  see  attrib‐
       utes(7).   allbox;  lb  lb  lb  l  l  l.   Interface Attribute Value T{
       aio_fsync() T}   Thread safety  MT-Safe

CONFORMING TO
       POSIX.1-2001, POSIX.1-2008.

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)

COLOPHON
       This  page  is  part of release 5.02 of the Linux man-pages project.  A
       description of the project, information about reporting bugs,  and  the
       latest     version     of     this    page,    can    be    found    at
       https://www.kernel.org/doc/man-pages/.

                                  2017-09-15                      AIO_FSYNC(3)
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