1.\" -*- nroff -*- 2.\" 3.\" Copyright (c) 1996 Doug Rabson 4.\" 5.\" All rights reserved. 6.\" 7.\" This program is free software. 8.\" 9.\" Redistribution and use in source and binary forms, with or without 10.\" modification, are permitted provided that the following conditions 11.\" are met: 12.\" 1. Redistributions of source code must retain the above copyright 13.\" notice, this list of conditions and the following disclaimer. 14.\" 2. Redistributions in binary form must reproduce the above copyright 15.\" notice, this list of conditions and the following disclaimer in the 16.\" documentation and/or other materials provided with the distribution. 17.\" 18.\" THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY EXPRESS OR 19.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21.\" IN NO EVENT SHALL THE DEVELOPERS BE LIABLE FOR ANY DIRECT, INDIRECT, 22.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 23.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 27.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28.\" 29.\" $FreeBSD: src/share/man/man9/VFS_FHTOVP.9,v 1.6.2.5 2001/12/17 11:30:18 ru Exp $ 30.\" $DragonFly: src/share/man/man9/VFS_FHTOVP.9,v 1.2 2003/06/17 04:37:01 dillon Exp $ 31.\" 32.Dd July 24, 1996 33.Os 34.Dt VFS_FHTOVP 9 35.Sh NAME 36.Nm VFS_FHTOVP 37.Nd turn an NFS filehandle into a vnode 38.Sh SYNOPSIS 39.In sys/param.h 40.In sys/mount.h 41.In sys/vnode.h 42.Ft int 43.Fn VFS_FHTOVP "struct mount *mp" "struct fid *fhp" "struct vnode **vpp" 44.Sh DESCRIPTION 45This is used by the NFS server to turn an NFS filehandle into a vnode. 46.Pp 47Its arguments are: 48.Bl -tag -width vpp 49.It Ar mp 50The filesystem. 51.It Ar fhp 52The filehandle to convert. 53.It Ar vpp 54Return parameter for the new locked vnode. 55.El 56.Pp 57The contents of the filehandle are defined by the filesystem and are 58not examined by any other part of the system. It should contain 59enough information to uniquely identify a file within the filesystem 60as well as noticing when a file has been removed and the filesystem 61resources have been reused for a new file. For instance, UFS 62filesystem stores the inode number and inode generation counter in its 63filehandle. 64.Pp 65A call to this function should generally be preceded by a call to 66.Xr VFS_CHECKEXP 9 67to check if the file is accessible to the client. 68.Sh RETURN VALUES 69The locked vnode for the file will be returned in 70.Fa *vpp . 71.Sh SEE ALSO 72.Xr VFS 9 , 73.Xr VFS_CHECKEXP 9 , 74.Xr VFS_VPTOFH 9 , 75.Xr vnode 9 76.Sh AUTHORS 77This man page was written by 78.An Doug Rabson . 79