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.\" $OpenBSD: mountd.8,v 1.21 2022/07/30 07:19:30 jsg Exp $
.\" $NetBSD: mountd.8,v 1.11 1996/02/18 11:57:51 fvdl Exp $
.\"
.\" Copyright (c) 1989, 1991, 1993
.\" The Regents of the University of California. 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. 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 REGENTS 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 REGENTS 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.
.\"
.\" @(#)mountd.8 8.4 (Berkeley) 4/28/95
.\"
.Dd $Mdocdate: July 30 2022 $
.Dt MOUNTD 8
.Os
.Sh NAME
.Nm mountd
.Nd service remote NFS mount requests
.Sh SYNOPSIS
.Nm mountd
.Op Fl d
.Op Ar exportsfile
.Sh DESCRIPTION
.Nm
is the server for NFS mount requests from other client machines.
.Nm
listens for service requests at the port indicated in the NFS
server specification; see
.%T "Network File System Protocol Specification" ,
RFC 1094, Appendix A and
.%T "NFS: Network File System Version 3 Protocol Specification" ,
RFC 1813, Appendix I.
.Pp
The options are as follows:
.Bl -tag -width Ds
.It Fl d
Enable debugging mode.
.Nm
will not detach from the controlling terminal and will print
debugging messages to stderr.
.It Ar exportsfile
The
.Ar exportsfile
argument specifies an alternate location
for the exports file.
.El
.Pp
When
.Nm
is started,
it loads the export host addresses and options into the kernel
using the
.Xr mount 2
system call.
After changing the exports file,
a hangup signal should be sent to the
.Nm
daemon
to get it to reload the export information.
After sending the
.Dv SIGHUP
(kill \-HUP `cat /var/run/mountd.pid`),
check the syslog output to see if
.Nm
logged any parsing
errors in the exports file.
.Sh FILES
.Bl -tag -width /var/run/mountd.pid -compact
.It Pa /etc/exports
list of exported filesystems
.It Pa /var/db/mountdtab
list of exported filesystems currently mounted
.It Pa /var/run/mountd.pid
PID of the currently running
.Nm
.El
.Sh SEE ALSO
.Xr nfsstat 1 ,
.Xr exports 5 ,
.Xr nfsd 8 ,
.Xr portmap 8 ,
.Xr showmount 8
.Sh HISTORY
The
.Nm
utility first appeared in
.Bx 4.3 Reno .
.Pp
The
.Fl n
flag historically allowed clients to use non-reserved ports
when communicating with
.Nm .
In
.Ox ,
a reserved port is always used.
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