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+.\" -*- nroff -*-
+.\"
+.\" Copyright (c) 1995 A.R.Gordon, andrew.gordon@net-tel.co.uk
+.\" All rights reserved.
+.\"
+.\" 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. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may 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.
+.\"
+.\"
+.Dd September 24, 1995
+.Dt RPC.LOCK 8
+.Os
+.Sh NAME
+.Nm rpc.lock 
+.Nd NFS file locking daemon
+.Sh SYNOPSIS
+.Nm /sbin/rpc.lockd
+.Op Fl d Op Ar debug_level
+.Sh DESCRIPTION
+.Nm rpc.rstatd
+is a daemon which provides file- and record-locking services in an NFS
+environment.
+.Pp
+Options and operands available for
+.Nm rpc.lockd :
+.Bl -tag -width Ds
+.It Fl d
+The
+.Fl d
+option causes debugging information to be written to syslog, recording
+all RPC transations to the daemon.  These messages are logged with level
+LOG_DEBUG and facility LOG_DAEMON.  If debug_level is not specified,
+level 1 is assumed, giving one log line per protocol operation.  Higher
+debug levels can be specified, causing display of operation arguments
+and internal operations of the daemon.
+.El
+.Pp
+Error conditions are logged to syslog, irrespecive of the debug level,
+using log level LOG_ERR and facility LOG_DAEMON.
+.Pp
+The
+.Nm rpc.lockd
+daemon must NOT be invoked by
+.Xr inetd 8
+because the protocol assumes that the daemon will run from system start time.
+Instead, it should be run from
+.Xr rc 8
+after the network has been started.
+.Sh FILES
+.Bl -tag -width /usr/include/rpcsvc/nlm_prot.x -compact
+.It Pa /usr/include/rpcsvc/nlm_prot.x
+RPC protocol specification for the network lock manager protocol.
+.El
+.Sh SEE ALSO
+.Xr rpc.statd 8 ,
+.Xr rc 8 ,
+.Xr syslog 3
+.Sh BUGS
+The current implementation provides only the server side of the protocol
+(ie. clients running other OS types can establish locks on a FreeBSD fileserver,
+but there is currently no means for a FreeBSD client to establish locks).
+.Pp
+Versions 1, 2 and 3 of the protocol are supported.  However, only versions
+2 (Unix systems) and 3 (PC-NFS clients) seem to be in common use - the version
+1 support has not been tested due to the lack of version 1 clients against
+which to test.
+.Sh STANDARDS
+The implementation is based on the specification in X/Open CAE Specification
+C218, "Protocols for X/Open PC Interworking: XNFS, Issue 4", ISBN 1 872630 66 9