1.\" $OpenBSD: rpc.lockd.8,v 1.13 2008/06/13 23:56:28 jmc Exp $ 2.\" 3.\" Copyright (c) 1995 A.R.Gordon, andrew.gordon@net-tel.co.uk 4.\" All rights reserved. 5.\" 6.\" Redistribution and use in source and binary forms, with or without 7.\" modification, are permitted provided that the following conditions 8.\" are met: 9.\" 1. Redistributions of source code must retain the above copyright 10.\" notice, this list of conditions and the following disclaimer. 11.\" 2. Redistributions in binary form must reproduce the above copyright 12.\" notice, this list of conditions and the following disclaimer in the 13.\" documentation and/or other materials provided with the distribution. 14.\" 3. All advertising materials mentioning features or use of this software 15.\" must display the following acknowledgement: 16.\" This product includes software developed by the University of 17.\" California, Berkeley and its contributors. 18.\" 4. Neither the name of the University nor the names of its contributors 19.\" may be used to endorse or promote products derived from this software 20.\" without specific prior written permission. 21.\" 22.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 23.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 26.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32.\" SUCH DAMAGE. 33.\" 34.\" 35.Dd $Mdocdate: June 13 2008 $ 36.Dt RPC.LOCKD 8 37.Os 38.Sh NAME 39.Nm rpc.lockd 40.Nd NFS file locking daemon 41.Sh SYNOPSIS 42.Nm rpc.lockd 43.Op Fl d Op Ar debug_level 44.Op Fl g Ar grace_period 45.Sh DESCRIPTION 46.Nm rpc.lockd 47is a daemon which provides file- and record-locking services in an NFS 48environment. 49.Pp 50The options are as follows: 51.Bl -tag -width Ds 52.It Fl d Op Ar debug_level 53Write debugging information to syslog, recording 54all RPC transactions to the daemon. 55These messages are logged with level 56.Dv LOG_DEBUG 57and facility 58.Dv LOG_DAEMON . 59If 60.Ar debug_level 61is not specified, 62level 1 is assumed, giving one log line per protocol operation. 63Higher debug levels can be specified, causing display of operation arguments 64and internal operations of the daemon. 65.It Fl g Ar grace_period 66Specify the grace period, in seconds. 67During the grace period 68.Nm 69only accepts requests from hosts which are reinitialising locks which 70existed before the server restart. 71The default is 30 seconds. 72.El 73.Pp 74Error conditions are logged to syslog, irrespective of the debug level, 75using log level 76.Dv LOG_ERR 77and facility 78.Dv LOG_DAEMON . 79.Pp 80The 81.Nm rpc.lockd 82daemon must NOT be invoked by 83.Xr inetd 8 84because the protocol assumes that the daemon will run from system start time. 85Instead, it should be run from 86.Xr rc 8 87after the network has been started. 88.Sh FILES 89.Bl -tag -width /usr/include/rpcsvc/nlm_prot.x -compact 90.It Pa /usr/include/rpcsvc/nlm_prot.x 91RPC protocol specification for the network lock manager protocol. 92.El 93.Sh SEE ALSO 94.Xr syslog 3 , 95.Xr rc 8 96.Sh STANDARDS 97The implementation is based on the specification in X/Open CAE Specification 98C218, "Protocols for X/Open PC Interworking: XNFS, Issue 4", ISBN 1 872630 66 9 99.Sh BUGS 100The current implementation provides only the server side of the protocol 101(i.e., clients running other OS types can establish locks on an 102.Ox 103fileserver, 104but there is currently no means for an 105.Ox 106client to establish locks). 107.Pp 108The current implementation serialises lock requests that could be shared. 109