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84 lines
2.5 KiB
Groff
84 lines
2.5 KiB
Groff
.\" -*- nroff -*-
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.\"
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.\" Copyright (c) 1996 Doug Rabson
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.\"
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.\" All rights reserved.
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.\"
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.\" This program is free software.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY EXPRESS OR
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.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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.\" IN NO EVENT SHALL THE DEVELOPERS BE LIABLE FOR ANY DIRECT, INDIRECT,
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.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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.\"
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.\" $FreeBSD$
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.\"
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.Dd January 7, 2005
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.Os
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.Dt VFS_VGET 9
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.Sh NAME
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.Nm VFS_VGET
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.Nd convert an inode number to a vnode
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.Sh SYNOPSIS
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.In sys/param.h
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.In sys/mount.h
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.In sys/vnode.h
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.Ft int
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.Fn VFS_VGET "struct mount *mp" "ino_t ino" "int flags" "struct vnode **vpp"
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.Sh DESCRIPTION
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The
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.Fn VFS_VGET
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looks up or creates a vnode from a (mount, inode#) tupple.
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.Pp
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Its arguments are:
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.Bl -tag -width ".Fa flags"
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.It Fa mp
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The mount point.
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.It Fa ino
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The inode representing the file.
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This is a unique number assigned by the file system when vnodes are first
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created.
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.It Fa flags
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Additional locking flags to pass through to
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.Xr vget 9 .
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.It Fa vpp
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Return parameter for the vnode.
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.El
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.Pp
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This is an optional file system entry-point for file systems mainly
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intended for NFS server use, but many file systems
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use it internally in
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.Xr VOP_LOOKUP 9
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and similar.
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.Pp
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If the file system does not support this call, then it should return
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.Er EOPNOTSUPP .
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.Pp
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Please see
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.Fn ffs_vget
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in
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.Pa sys/ufs/ffs/ffs_vfsops.c
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for the canonical example.
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.Sh SEE ALSO
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.Xr VFS 9 ,
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.Xr vget 9 ,
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.Xr vnode 9
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.Sh AUTHORS
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This manual page was written by
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.An Doug Rabson .
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