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.

       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 attributes(7).

       ┌────────────┬───────────────┬─────────┐
       │Interface   │ Attribute     │ Value   │
       ├────────────┼───────────────┼─────────┤
       │aio_fsync() │ 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_suspend(3),  aio_write(3),  lio_listio(3),
       aio(7), sigevent(7)

COLOPHON

       This  page  is  part  of  release  5.10  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)