xref: /freebsd/share/man/man9/VFS_VGET.9 (revision eda14cbc264d6969b02f2b1994cef11148e914f1)
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.\" $FreeBSD$
30.\"
31.Dd January 7, 2005
32.Dt VFS_VGET 9
33.Os
34.Sh NAME
35.Nm VFS_VGET
36.Nd convert an inode number to a vnode
37.Sh SYNOPSIS
38.In sys/param.h
39.In sys/mount.h
40.In sys/vnode.h
41.Ft int
42.Fn VFS_VGET "struct mount *mp" "ino_t ino" "int flags" "struct vnode **vpp"
43.Sh DESCRIPTION
44The
45.Fn VFS_VGET
46looks up or creates a vnode from a (mount, inode#) tuple.
47.Pp
48Its arguments are:
49.Bl -tag -width ".Fa flags"
50.It Fa mp
51The mount point.
52.It Fa ino
53The inode representing the file.
54This is a unique number assigned by the file system when vnodes are first
55created.
56.It Fa flags
57Additional locking flags to pass through to
58.Xr vget 9 .
59.It Fa vpp
60Return parameter for the vnode.
61.El
62.Pp
63This is an optional file system entry-point for file systems mainly
64intended for NFS server use, but many file systems
65use it internally in
66.Xr VOP_LOOKUP 9
67and similar.
68.Pp
69If the file system does not support this call, then it should return
70.Er EOPNOTSUPP .
71.Pp
72Please see
73.Fn ffs_vget
74in
75.Pa sys/ufs/ffs/ffs_vfsops.c
76for the canonical example.
77.Sh SEE ALSO
78.Xr VFS 9 ,
79.Xr vget 9 ,
80.Xr vnode 9
81.Sh AUTHORS
82This manual page was written by
83.An Doug Rabson .
84