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.\" Copyright (c) 1996 Doug Rabson
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.\" $FreeBSD: releng/12.2/share/man/man9/VFS_VGET.9 210669 2010-07-31 10:01:15Z joel $
.\"
.Dd January 7, 2005
.Dt VFS_VGET 9
.Os
.Sh NAME
.Nm VFS_VGET
.Nd convert an inode number to a vnode
.Sh SYNOPSIS
.In sys/param.h
.In sys/mount.h
.In sys/vnode.h
.Ft int
.Fn VFS_VGET "struct mount *mp" "ino_t ino" "int flags" "struct vnode **vpp"
.Sh DESCRIPTION
The
.Fn VFS_VGET
looks up or creates a vnode from a (mount, inode#) tuple.
.Pp
Its arguments are:
.Bl -tag -width ".Fa flags"
.It Fa mp
The mount point.
.It Fa ino
The inode representing the file.
This is a unique number assigned by the file system when vnodes are first
created.
.It Fa flags
Additional locking flags to pass through to
.Xr vget 9 .
.It Fa vpp
Return parameter for the vnode.
.El
.Pp
This is an optional file system entry-point for file systems mainly
intended for NFS server use, but many file systems
use it internally in
.Xr VOP_LOOKUP 9
and similar.
.Pp
If the file system does not support this call, then it should return
.Er EOPNOTSUPP .
.Pp
Please see
.Fn ffs_vget
in
.Pa sys/ufs/ffs/ffs_vfsops.c
for the canonical example.
.Sh SEE ALSO
.Xr VFS 9 ,
.Xr vget 9 ,
.Xr vnode 9
.Sh AUTHORS
This manual page was written by
.An Doug Rabson .