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.Dd May 23, 2009 30.Dt VFS_ROOT 9 31.Os 32.Sh NAME 33.Nm VFS_ROOT 34.Nd return the root vnode of a file system 35.Sh SYNOPSIS 36.In sys/param.h 37.In sys/mount.h 38.In sys/vnode.h 39.Ft int 40.Fn VFS_ROOT "struct mount *mp" "int flags" "struct vnode **vpp" 41.Sh DESCRIPTION 42Return a locked vnode for the root directory of the file system. 43.Pp 44Its arguments are: 45.Bl -tag -width flags 46.It Fa mp 47The file system. 48.It Fa flags 49The lock type. 50Could be 51.Dv LK_EXCLUSIVE 52or 53.Dv LK_SHARED . 54File system is free to ignore the 55.Fa flags 56argument and instead acquire an exclusive lock. 57.It Fa vpp 58Return parameter for the root vnode. 59.El 60.Sh SEE ALSO 61.Xr VFS 9 , 62.Xr vnode 9 63.Sh AUTHORS 64This manual page was written by 65.An Doug Rabson . 66