2004-11-03 13:51:07 +00:00
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.\" Copyright (c) 2003 Andries Brouwer (aeb@cwi.nl)
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.\"
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.\" This is free documentation; you can redistribute it and/or
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.\" modify it under the terms of the GNU General Public License as
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.\" published by the Free Software Foundation; either version 2 of
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.\" the License, or (at your option) any later version.
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.\"
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.\" The GNU General Public License's references to "object code"
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.\" and "executables" are to be interpreted as the output of any
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.\" document formatting or typesetting system, including
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.\" intermediate and printed output.
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.\"
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.\" This manual is distributed in the hope that it will be useful,
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.\" but WITHOUT ANY WARRANTY; without even the implied warranty of
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.\" MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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.\" GNU General Public License for more details.
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.\"
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.\" You should have received a copy of the GNU General Public
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.\" License along with this manual; if not, write to the Free
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.\" Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111,
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.\" USA.
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.\"
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2010-10-02 13:16:38 +00:00
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.TH AIO_FSYNC 3 2010-10-02 "" "Linux Programmer's Manual"
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2004-11-03 13:51:07 +00:00
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.SH NAME
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aio_fsync \- asynchronous file synchronization
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.SH SYNOPSIS
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.B "#include <aio.h>"
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.sp
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.BI "int aio_fsync(int " op ", struct aiocb *" aiocbp );
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2008-04-25 06:35:53 +00:00
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.sp
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Link with \fI\-lrt\fP.
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2004-11-03 13:51:07 +00:00
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.SH DESCRIPTION
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The
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2005-10-19 06:54:38 +00:00
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.BR aio_fsync ()
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function does a sync on all outstanding asynchronous I/O operations
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associated with
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2007-12-22 16:40:46 +00:00
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.IR aiocbp\->aio_fildes .
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2010-10-02 13:27:41 +00:00
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(See
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.BR aio (7)
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for a description of the
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.I aiocb
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structure.)
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2004-11-03 13:51:07 +00:00
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.LP
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More precisely, if
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.I op
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2007-06-22 19:42:52 +00:00
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is
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.BR O_SYNC ,
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then all currently queued I/O operations shall be
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2004-11-03 13:51:07 +00:00
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completed as if by a call of
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.BR fsync (2),
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and if
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.I op
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2007-06-22 19:42:52 +00:00
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is
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.BR O_DSYNC ,
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this call is the asynchronous analog of
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2004-11-03 13:51:07 +00:00
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.BR fdatasync (2).
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2005-07-18 12:43:00 +00:00
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Note that this is a request only \(em this call does not wait
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2004-11-03 13:51:07 +00:00
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for I/O completion.
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.LP
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Apart from
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.I aio_fildes
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the only field in the structure pointed to by
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.I aiocbp
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that is used by this call is the
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.I aio_sigevent
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2010-09-21 04:49:42 +00:00
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field (a
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.I sigevent
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structure, described in
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.BR sigevent (7)),
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which indicates the desired type of asynchronous notification at completion.
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.\" FIXME more sigevent details are probably needed here.
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2004-11-03 13:51:07 +00:00
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All other fields are ignored.
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.SH "RETURN VALUE"
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On success (the sync request was successfully queued)
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2007-06-08 03:17:37 +00:00
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this function returns 0.
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On error \-1 is returned, and
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2004-11-03 13:51:07 +00:00
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.I errno
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is set appropriately.
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.SH ERRORS
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.TP
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.B EAGAIN
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Out of resources.
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.TP
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.B EBADF
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.I aio_fildes
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is not a valid file descriptor open for writing.
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.TP
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.B EINVAL
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No synchronized I/O for this file is supported, or
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.I op
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2007-06-22 19:42:52 +00:00
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is not
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.B O_SYNC
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or
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.BR O_DSYNC .
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2010-10-02 12:35:28 +00:00
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.SH VERSIONS
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The
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.BR aio_fsync ()
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function is available since glibc 2.1.
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2004-11-03 13:51:07 +00:00
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.SH "CONFORMING TO"
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POSIX.1-2001, POSIX.1-2008.
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2004-11-03 13:51:07 +00:00
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.SH "SEE ALSO"
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.BR aio_cancel (3),
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.BR aio_error (3),
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.BR aio_read (3),
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.BR aio_return (3),
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.BR aio_suspend (3),
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2010-09-21 04:49:42 +00:00
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.BR aio_write (3),
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2010-10-02 13:16:38 +00:00
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.BR aio (7),
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2010-09-21 04:49:42 +00:00
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.BR sigevent (7)
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