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.\" $FreeBSD$ 34.\" 35.Dd April 28, 1995 36.Dt MOUNTD 8 37.Os 38.Sh NAME 39.Nm mountd 40.Nd service remote 41.Tn NFS 42mount requests 43.Sh SYNOPSIS 44.Nm 45.Op Fl 2dlnr 46.Op Ar exportsfile 47.Sh DESCRIPTION 48.Nm Mountd 49is the server for 50.Tn NFS 51mount requests from other client machines. 52It listens for service requests at the port indicated in the 53.Tn NFS 54server specification; see 55.%T "Network File System Protocol Specification" , 56RFC1094, Appendix A and 57.%T "NFS: Network File System Version 3 Protocol Specification" , 58Appendix I. 59.Pp 60The following options are available: 61.Bl -tag -width indent 62.It Fl 2 63Allow the administrator to force clients to use only the 64version 2 65.Tn NFS 66protocol to mount filesystems from this server. 67.It Fl d 68Output debugging information. 69.It Fl l 70Cause all succeeded 71.Nm 72requests to be logged. 73.It Fl n 74Allow non-root mount requests to be served. 75This should only be specified if there are clients such as PC's, 76that require it. 77It will automatically clear the vfs.nfs.nfs_privport sysctl flag, which 78controls if the kernel will accept NFS requests from reserved ports only. 79.It Fl r 80Allow mount RPCs requests for regular files to be served. 81Although this seems to violate the mount protocol specification, 82some diskless workstations do mount requests for 83their swapfiles and expect them to be regular files. 84Since a regular file cannot be specified in 85.Pa /etc/exports , 86the entire file system in which the swapfiles resides 87will have to be exported with the 88.Fl alldirs 89flag. 90.It Ar exportsfile 91Specify an alternate location 92for the exports file. 93.El 94.Pp 95When 96.Nm 97is started, 98it loads the export host addresses and options into the kernel 99using the 100.Xr mount 2 101system call. 102After changing the exports file, 103a hangup signal should be sent to the 104.Nm 105daemon 106to get it to reload the export information. 107After sending the SIGHUP 108(kill \-s HUP `cat /var/run/mountd.pid`), 109check the syslog output to see if 110.Nm 111logged any parsing 112errors in the exports file. 113.Pp 114If 115.Nm 116detects that the running kernel does not include 117.Tn NFS 118support, it will attempt to load a loadable kernel module containing 119.Tn NFS 120code, using 121.Xr kldload 8 122by way of 123.Xr vfsload 3 . 124If this fails, or no 125.Tn NFS 126KLD was available, 127.Nm 128exits with an error. 129.Sh FILES 130.Bl -tag -width /var/run/mountd.pid -compact 131.It Pa /etc/exports 132the list of exported filesystems 133.It Pa /var/run/mountd.pid 134the pid of the currently running mountd 135.It Pa /var/db/mountdtab 136the current list of remote mounted filesystems 137.El 138.Sh SEE ALSO 139.Xr nfsstat 1 , 140.Xr exports 5 , 141.Xr kldload 8 , 142.Xr nfsd 8 , 143.Xr rpcbind 8 , 144.Xr showmount 8 145.Sh HISTORY 146The 147.Nm 148utility first appeared in 149.Bx 4.4 . 150