.\"     $OpenBSD: getnewvnode.9,v 1.5 2007/05/31 19:20:00 jmc Exp $
.\"
.\" Copyright (C) 2001 Chad David <davidc@acns.ab.ca>. All rights reserved.
.\"
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.\" $FreeBSD: src/share/man/man9/getnewvnode.9,v 1.1 2001/12/02 02:13:35 alfred Exp $
.\"
.Dd $Mdocdate: May 31 2007 $
.Dt GETNEWVNODE 9
.Os
.Sh NAME
.Nm getnewvnode
.Nd "get a new vnode"
.Sh SYNOPSIS
.Fd #include <sys/param.h>
.Fd #include <sys/vnode.h>
.Fd #include <sys/mount.h>
.Ft int
.Fo getnewvnode
.Fa "enum vtagtype tag"
.Fa "struct mount *mp"
.Fa "int (**vops)((void *))"
.Fa "struct vnode **vpp"
.Fc
.Sh DESCRIPTION
The
.Fn getnewvnode
function initializes a new vnode, assigning it the vnode operations passed in
.Fa vops .
It will have its v_tag field set to
.Fa tag
and be placed in the mount queue for the mount point represented by
.Fa mp .
.Pp
The vnode is either freshly allocated, taken from the free list or taken from
the hold list.
If there are no vnodes on the free list, half the time a vnode
referencing buffers will be taken from the hold list, otherwise it will be
freshly allocated.
.Pp
The arguments to
.Fn getnewvnode
are:
.Bl -tag -width ".Fa vops"
.It Fa tag
The file system type.
.It Fa mp
The mount point to add the new vnode to.
.It Fa vops
The vnode operations to assign to the new vnode.
.It Fa vpp
Points to the new vnode upon successful completion.
.El
.Sh RETURN VALUES
.Fn getnewvnode
returns 0 on success, or ENFILE if the vnode table is full.
.Sh AUTHORS
This man page was originally written by
.An Chad David Aq davidc@acns.ab.ca
for
.Fx .