1.\" Copyright (c) 1989, 1991, 1993 2.\" The Regents of the University of California. All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer. 9.\" 2. Redistributions in binary form must reproduce the above copyright 10.\" notice, this list of conditions and the following disclaimer in the 11.\" documentation and/or other materials provided with the distribution. 12.\" 3. All advertising materials mentioning features or use of this software 13.\" must display the following acknowledgement: 14.\" This product includes software developed by the University of 15.\" California, Berkeley and its contributors. 16.\" 4. Neither the name of the University nor the names of its contributors 17.\" may be used to endorse or promote products derived from this software 18.\" without specific prior written permission. 19.\" 20.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30.\" SUCH DAMAGE. 31.\" 32.\" @(#)mountd.8 8.4 (Berkeley) 4/28/95 33.\" $FreeBSD: src/sbin/mountd/mountd.8,v 1.16.2.2 2000/12/08 14:04:02 ru Exp $ 34.\" $DragonFly: src/sbin/mountd/mountd.8,v 1.3 2007/07/14 21:48:16 swildner Exp $ 35.\" 36.Dd April 28, 1995 37.Dt MOUNTD 8 38.Os 39.Sh NAME 40.Nm mountd 41.Nd service remote 42.Tn NFS 43mount requests 44.Sh SYNOPSIS 45.Nm 46.Op Fl 2dlnr 47.Op Ar exportsfile 48.Sh DESCRIPTION 49.Nm Mountd 50is the server for 51.Tn NFS 52mount requests from other client machines. 53It listens for service requests at the port indicated in the 54.Tn NFS 55server specification; see 56.%T "Network File System Protocol Specification" , 57RFC1094, Appendix A and 58.%T "NFS: Network File System Version 3 Protocol Specification" , 59Appendix I. 60.Pp 61The following options are available: 62.Bl -tag -width indent 63.It Fl 2 64Allow the administrator to force clients to use only the 65version 2 66.Tn NFS 67protocol to mount filesystems from this server. 68.It Fl d 69Output debugging information. 70.It Fl l 71Cause all succeeded 72.Nm 73requests to be logged. 74.It Fl n 75Allow non-root mount requests to be served. 76This should only be specified if there are clients such as PC's, 77that require it. 78It will automatically clear the 79.Va vfs.nfs.nfs_privport 80sysctl flag, which 81controls if the kernel will accept NFS requests from reserved ports only. 82.It Fl r 83Allow mount RPCs requests for regular files to be served. 84Although this seems to violate the mount protocol specification, 85some diskless workstations do mount requests for 86their swapfiles and expect them to be regular files. 87Since a regular file cannot be specified in 88.Pa /etc/exports , 89the entire file system in which the swapfiles resides 90will have to be exported with the 91.Fl alldirs 92flag. 93.It Ar exportsfile 94Specify an alternate location 95for the exports file. 96.El 97.Pp 98When 99.Nm 100is started, 101it loads the export host addresses and options into the kernel 102using the 103.Xr mount 2 104system call. 105After changing the exports file, 106a hangup signal should be sent to the 107.Nm 108daemon 109to get it to reload the export information. 110After sending the SIGHUP 111(kill \-s HUP `cat /var/run/mountd.pid`), 112check the syslog output to see if 113.Nm 114logged any parsing 115errors in the exports file. 116.Pp 117If 118.Nm 119detects that the running kernel does not include 120.Tn NFS 121support, it will attempt to load a loadable kernel module containing 122.Tn NFS 123code, using 124.Xr kldload 8 125by way of 126.Xr vfsload 3 . 127If this fails, or no 128.Tn NFS 129KLD was available, 130.Nm 131exits with an error. 132.Sh FILES 133.Bl -tag -width /var/run/mountd.pid -compact 134.It Pa /etc/exports 135the list of exported filesystems 136.It Pa /var/run/mountd.pid 137the pid of the currently running mountd 138.It Pa /var/db/mountdtab 139the current list of remote mounted filesystems 140.El 141.Sh SEE ALSO 142.Xr nfsstat 1 , 143.Xr exports 5 , 144.Xr kldload 8 , 145.Xr nfsd 8 , 146.Xr portmap 8 , 147.Xr showmount 8 148.Sh HISTORY 149The 150.Nm 151utility first appeared in 152.Bx 4.4 . 153