1.\" Copyright (c) 1996 Doug Rabson 2.\" 3.\" All rights reserved. 4.\" 5.\" This program is free software. 6.\" 7.\" Redistribution and use in source and binary forms, with or without 8.\" modification, are permitted provided that the following conditions 9.\" are met: 10.\" 1. Redistributions of source code must retain the above copyright 11.\" notice, this list of conditions and the following disclaimer. 12.\" 2. Redistributions in binary form must reproduce the above copyright 13.\" notice, this list of conditions and the following disclaimer in the 14.\" documentation and/or other materials provided with the distribution. 15.\" 16.\" THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY EXPRESS OR 17.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19.\" IN NO EVENT SHALL THE DEVELOPERS BE LIABLE FOR ANY DIRECT, INDIRECT, 20.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 21.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 25.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26.\" 27.\" $FreeBSD: src/share/man/man9/VOP_FSYNC.9,v 1.6.2.2 2001/12/17 11:30:18 ru Exp $ 28.\" 29.Dd July 24, 1996 30.Dt VOP_FSYNC 9 31.Os 32.Sh NAME 33.Nm VOP_FSYNC 34.Nd flush filesystem buffers for a file 35.Sh SYNOPSIS 36.In sys/param.h 37.In sys/vnode.h 38.Ft int 39.Fn VOP_FSYNC "struct vnode *vp" "struct ucred *cred" "int waitfor" "struct proc *p" 40.Sh DESCRIPTION 41This call flushes any dirty filesystem buffers for the file. 42It is used to implement the 43.Xr sync 2 44and 45.Xr fsync 2 46system calls. 47.Pp 48Its arguments are: 49.Bl -tag -width waitfor 50.It Ar vp 51the vnode of the file 52.It Ar cred 53the caller's credentials 54.It Ar waitfor 55whether the function should wait for I/O to complete 56.It Ar p 57the calling process 58.El 59.Pp 60The argument 61.Fa waitfor 62is either 63.Dv MNT_WAIT 64or 65.Dv MNT_NOWAIT 66and specifies whether or not the function should wait for the writes 67to finish before returning. 68.Sh LOCKS 69The file should be locked on entry. 70.Sh RETURN VALUES 71Zero is returned if the call is successful, otherwise an appropriate 72error code is returned. 73.Sh ERRORS 74.Bl -tag -width Er 75.It Bq Er ENOSPC 76The filesystem is full. 77.It Bq Er EDQUOT 78Quota exceeded. 79.El 80.Sh SEE ALSO 81.Xr vnode 9 82.Sh AUTHORS 83This man page was written by 84.An Doug Rabson . 85