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+.\" -*- nroff -*-
+.\"
+.\" Copyright (c) 2002 Networks Associates Technology, Inc.
+.\" All rights reserved.
+.\"
+.\" This software was developed for the FreeBSD Project by NAI Labs, the
+.\" Security Research Division of Network Associates, Inc. under
+.\" DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as part of the DARPA
+.\" CHATS research program.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. The names of the authors may not be used to endorse or promote
+.\"    products derived from this software without specific prior written
+.\"    permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\" $FreeBSD$
+.\"
+.Dd February 5, 2002
+.Dt VOP_REVOKE 9
+.Os
+.Sh NAME
+.Nm VOP_REVOKE
+.Nd "revoke access to a device and its aliases"
+.Sh SYNOPSIS
+.In sys/param.h
+.In sys/vnode.h
+.Ft int
+.Fn VOP_REVOKE "struct vnode *vp" "int flags"
+.Sh DESCRIPTION
+.Fn VOP_REVOKE
+will administratively revoke access to the device specified by
+.Fa vp ,
+as well as any aliases created via
+.Xr make_dev_alias 9 .
+Further file operations on any of these devices by processes
+which have them open will nominally fail.
+The
+.Fa flags
+must be set to
+.Dv REVOKEALL
+to signify that all access will be revoked; any other value is invalid.
+.Sh LOCKS
+The
+.Fa vp
+must be unlocked on entry, and will remain unlocked upon return.
+.Sh SEE ALSO
+.Xr make_dev_alias 9 ,
+.Xr vnode 9
+.Sh AUTHORS
+This manual page was written by
+.An Brian Fundakowski Feldman .