234 lines
5.3 KiB
Groff
234 lines
5.3 KiB
Groff
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.\" Copyright (c) 1989, 1991 The Regents of the University of California.
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.\" All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\" 3. All advertising materials mentioning features or use of this software
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.\" must display the following acknowledgement:
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.\" This product includes software developed by the University of
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.\" California, Berkeley and its contributors.
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.\" 4. Neither the name of the University nor the names of its contributors
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.\" may be used to endorse or promote products derived from this software
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.\" without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" @(#)nfsd.8 5.9 (Berkeley) 8/5/91
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.\"
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.Dd August 5, 1991
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.Dt NFSD 8
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.Os
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.Sh NAME
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.Nm nfsd
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.Nd remote
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.Tn NFS
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server
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.Sh SYNOPSIS
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.Nm nfsd
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.Op Fl r
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.Bk -words
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.Op Fl t Ar msk,mtch,hostadr1,hostadr2,...
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.Ek
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.Bk -words
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.Op Fl u Ar msk,mtch,numprocs
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.Ek
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.Op Ar numprocs
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.Sh DESCRIPTION
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.Nm Nfsd
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runs on a server machine to service
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.Tn NFS
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requests from client machines.
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At least one
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.Nm nfsd
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must be running for a machine to operate as a server.
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The options
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.Fl u
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and
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.Fl t
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are used to indicate which transport protocols are to be served.
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.Pp
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Options available to
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.Nm nfsd :
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.Bl -tag -width Ds
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.It Fl r
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Register the
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.Tn NFS
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service with
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.Xr portmap 8
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without creating any servers. This option can be used along with the
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.Fl u
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or
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.Fl t
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options to re-register NFS if the portmap server is restarted.
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.It Fl t
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Serve
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.Tn TCP NFS
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clients.
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.It Fl u
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Serve
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.Tn UDP NFS
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clients.
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.El
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.Pp
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The following arguments to the
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.Fl u
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or
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.Fl t
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options are used to specify parameters for service using the respective
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protocol:
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.Bl -tag -width Ds
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.It Ar msk , mtch
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These arguments permit restriction of
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.Tn NFS
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services
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to a subset of the host addresses. The
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.Ar msk
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and
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.Ar mtch
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are applied to the client host address as follows:
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.Pp
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.Bd -filled -offset indent -compact
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if ((
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.Ar host_address No \&& Em msk
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) ==
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.Ar mtch
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)
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.br
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\- service the client request
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.br
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else
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.br
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\- drop the request
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.Ed
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.It Ar hostadr1 , ...
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You may also specify zero or more specific host addresses to be accepted
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as well as ones that pass the
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.Ar msk , mtch
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test above.
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This may only be done for transport protocols that are connection based, such
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as
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.Tn TCP .
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For the internet domain,
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.Ar msk , mtch
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and
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.Ar hostadrs
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are specified in internet
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.Em dot
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notation.
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.It Ar numprocs
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Specifies how many servers to fork off. This may only be specified for
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non-connection based protocols such as
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.Tn UDP .
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.El
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.Pp
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If neither
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.Fl u
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or
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.Fl t
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are specified,
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.Ar numprocs
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servers for
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.Tn UDP
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accepting requests from all clients are started.
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If
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.Ar numprocs
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is not specified, it defaults to 1.
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.Pp
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For example:
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.Bd -literal
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nfsd \-u 255.255.255.0,131.104.48.0,4 \-t \e
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255.255.0.0,131.104.0.0,131.102.31.2
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.Ed
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.Bl -item -offset indent
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.It
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Serves
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.Tn UDP
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and
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.Tn TCP
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transports. For
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.Tn UDP ,
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it runs 4 daemons that accept requests
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from any client on subnet 131.104.48.
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For
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.Tn TCP ,
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it accepts connections from any client on network 131.104
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plus the client with the address 131.102.31.2.
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.El
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.Bd -literal
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nfsd \-u 255.255.240.0,131.104.0.0,6 \-t 0,0
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.Ed
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.Bl -item -offset indent
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.It
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Serves
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.Tn UDP
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and
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.Tn TCP
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transports.
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For
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.Tn UDP ,
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it runs 6 daemons that accept requests from clients with
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addresses in the range 131.104.0.x - 131.104.15.x.
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For
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.Tn TCP ,
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it accepts connections from any client.
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.El
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.Pp
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.Li nfsd \-u 0,0,4
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.Bl -item -offset indent
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.It
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Serves any
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.Tn UDP
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client with 4 servers, only.
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.El
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.Pp
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.Li nfsd 4
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.Bl -item -offset indent
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.It
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Serves any
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.Tn UDP
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client with 4 servers, only. (Compatibility)
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.El
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.Pp
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A server should typically run enough daemons to handle
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the maximum level of concurrency from its clients,
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typically four to six.
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.Pp
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.Nm Nfsd
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listens for service requests at the port indicated in the
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.Tn NFS
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server specification; see
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.%T "Network File System Protocol Specification" ,
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RFC1094.
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.Sh SEE ALSO
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.Xr nfsstat 1 ,
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.Xr nfssvc 2 ,
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.Xr mountd 8 ,
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.Xr portmap 8
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.Sh BUGS
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The client host address restrictions specified here are unrelated to
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the mount restrictions specified in
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.Pa /etc/exports
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for
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.Xr mountd 8 .
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.Sh HISTORY
|
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The
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.Nm
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command is
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.Ud .
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