218 lines
5.8 KiB
Groff
218 lines
5.8 KiB
Groff
.\" $NetBSD: pcnfsd.8,v 1.8 2008/09/27 04:47:01 reed Exp $
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.\" @(#) @(#)pcnfsd.8c 1.1 9/3/91;
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.TH RPC.PCNFSD 8 "25 April 1991"
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.SH NAME
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pcnfsd, rpc.pcnfsd \- (PC)NFS authentication and print request server
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.SH SYNOPSIS
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.B /usr/sbin/rpc.pcnfsd
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.SH DESCRIPTION
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.LP
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.B pcnfsd
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is an
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.SM RPC
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server that supports Sun ONC clients on PC (DOS, OS/2, Macintosh, and other)
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systems. This page describes version two of the
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.B pcnfsd
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server.
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.LP
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.B rpc.pcnfsd
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may be started from
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.B /etc/rc.local
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or by the
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.BR inetd (8)
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superdaemon. It reads the configuration file
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.B /etc/pcnfsd.conf
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if present, and then services RPC requests directed to
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program number 150001. This release of the
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.B pcnfsd
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daemon supports both version 1 and version 2 of the pcnfsd
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protocol. Consult the
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.B rpcgen
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source file
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.B pcnfsd.x
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for details of the protocols.
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.LP
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The requests serviced by
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.B pcnfsd
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fall into three categories: authentication, printing, and other. Only the
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authentication and printing services have administrative significance.
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.SH AUTHENTICATION
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When
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.B pcnfsd
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receives a
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.B PCNFSD_AUTH
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or
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.B PCNFSD2_AUTH
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request\**, it will "log in" the user by validating the username and
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password and returning the corresponding uid, gids, home directory,
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and umask. If
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.B pcnfsd
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was built with the
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.B WTMP
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compile-time option, it will also append a record to the
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.BR wtmp (5)
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data base. If you do not wish to record PC "logins" in this way,
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you should add a line of the form
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.RS
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.sp
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\fBwtmp off\fP
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.sp
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.RE
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to the
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.B /etc/pcnfsd.conf
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file.
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.SH PRINTING
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.LP
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.B pcnfsd
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supports a printing model based on the use of NFS to transfer
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the actual print data from the client to the server. The client system
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issues a
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.B PCNFSD_PR_INIT
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or
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.B PCNFSD2_PR_INIT
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request, and the server returns the path to a spool directory which
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the client may use and which is exported by NFS.
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.B pcnfsd
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creates a subdirectory for each of its clients: the parent
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directory is normally
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.B /export/pcnfs
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and the subdirectory is the hostname of the client system.
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If you wish to use a different parent directory, you should add a
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line of the form
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.RS
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.sp
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\fBspooldir\fP \fIpath\fP
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.sp
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.RE
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to the
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.B /etc/pcnfsd.conf
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file.
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.LP
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Once a client has mounted the spool directory using NFS
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and has transferred print data to a file in this directory, it
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will issue a
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.B PCNFSD_PR_START
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or
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.B PCNFSD2_PR_START
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request.
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.B pcnfsd
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handles this, and most other print-related requests, by
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constructing a command based on the printing services of
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the server operating system and executing the command using the
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identity of the PC user. Since this involves set-user-id privileges,
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.B pcnfsd
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must be run as root.
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.LP
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Every print request from the client includes the name of the printer
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which is to be used. In SunOS, this name corresponds to a printer
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definition in the
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.BR /etc/printcap (5)
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database. If you wish to define a non-standard way of processing
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print data, you should define a new printer and arrange for the
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client to print to this printer. There are two ways of setting up a new printer.
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The first involves the addition of an entry to
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.BR /etc/printcap (5)
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and the creation of filters to perform the required processing. This
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is outside the scope of this discussion. In addition,
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.B pcnfsd
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includes a mechanism by which you can define virtual printers known
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only to
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.B pcnfsd
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clients. Each printer is defined by a line in the
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.B /etc/pcnfsd.conf
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file of the following form
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.RS
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.sp
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\fBprinter\fP \fIname alias-for command\fP
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.sp
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.RE
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\fIname\fP is the name of the printer you want to define. \fIalias-for\fP
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is the name of a "real" printer which corresponds to this printer. For
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example, a request to
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display the queue for \fIname\fP will be translated into the
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corresponding request for the printer \fIalias-for\fP. If you have
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defined a printer in such a way that there is no "real" printer to
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which it corresponds, use a single "-" for this field. (See the
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definition of the printer
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.B test
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below for an example.) \fIcommand\fP is a
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command which will be executed whenever a file is printed on \fIname\fP.
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This command is executed by the Bourne shell,
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.B /bin/sh
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using the
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.B -c
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option. For complex operations you should
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construct an executable shell program and invoke that in \fIcommand\fP.
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Within \fIcommand\fP the following tokens will be replaced:
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.LP
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.TP 10
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.B Token
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.B Substitution
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.TP
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.SB $FILE
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Replaced by the full path name of the print data file. When
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the command has been executed, the file will be unlinked.
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.TP
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.SB $USER
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Replaced by the username of the user logged in to the client system.
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.TP
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.SB $HOST
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Replaced by the host name of the client system.
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.LP
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Consider the following example
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.B /etc/pcnfsd.conf
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file:
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.RS
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.sp
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printer rotated lw /usr/local/bin/enscript -2r \s-2$FILE\s0
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.br
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printer test - /usr/bin/cp \s-2$FILE\s0 /usr/tmp/\s-2$HOST\s0-\s-2$USER\s0
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.sp
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.RE
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If a client system prints a job on the printer
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.B rotated
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the utility
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.B enscript
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will be invoked to pre-process the file \s-2$FILE\s0. In this
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case, the
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.B -2r
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option causes the file to be printed in two-column rotated format
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on the default PostScript\(rg printer.
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If the client requests a list of the print queue for the printer
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.B rotated
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the
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.B pcnfsd
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daemon will translate this into a request for a listing for
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the printer
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.B lw.
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.LP
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The printer
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.B test
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is used only for testing. Any file sent to this printer
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will be copied into
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.B /usr/tmp.
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Any request to list the queue, check the status, etc. of printer
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.B test
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will be rejected because the \fIalias-for\fP has been specified as "-".
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.SH FILES
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.PD 0
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.TP 20
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.B /etc/pcnfsd.conf
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configuration file
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.TP 20
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.B /export/pcnfs
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default print spool directory
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.PD
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.SH "SEE ALSO"
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.BR lpr (1),
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.BR lpc (8)
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.SH HISTORY
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The
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.B pcnfsd
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source code is distributed by Sun Microsystems, Inc. with their
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.SM PC/NFS
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product under terms described in common.h in that source code.
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Those terms require that you be informed that this version of
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.B pcnfsd
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was modified to run on NetBSD and is NOT supported by Sun.
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