DGLD(1M)							      DGLD(1M)

NAME    [Toc]    [Back]

     dgld - Graphics Library server

SYNOPSIS    [Toc]    [Back]

     /usr/etc/dgld [ -dIM ] [ -D debuglevel ] [	-m msgfile ] [ -t type ] [ -p
     port ]

DESCRIPTION    [Toc]    [Back]

     dgld is the server	for programs performing	remote graphics	with the
     Graphics Libary or	for programs linked with the Distributed Graphics
     Library.  The server provides both	a subprocess graphics facility and a
     networked graphics	facility.  dgld	is started either by inetd(1M) or by
     dnserver.

     TCP socket	connections are	serviced by inetd.  inetd listens for
     connections on the	port indicated in the ``sgi-dgl'' service
     specification; see	services(4).  When a connection	is found, dgld is
     started as	specified by the file /usr/etc/inetd.conf and given the
     socket.  When using the Graphics Library, authentication is performed by
     the X server via the same mechanisms as for X clients.  When using	the
     Distributed Graphics Library, authentication is performed using
     ruserok(3N) in the	same manner as rshd and	the server process's group and
     user id are changed accordingly.

     DECnet connections	are serviced by	dnserver, which	listens	for
     connections for an	object named ``DGLD''.	When a valid connection	is
     established, dgld is started as specified in /usr/etc/dn/servers.reg and
     given the connection. Although a valid username and password is necessary
     to	establish the connection, authentication using ruserok(3N) is still
     performed.

OPTIONS    [Toc]    [Back]

     The following options are supported:

     -d	       Sets the	highest	debugging level.

     -I	       Informs the graphics server that	it was started from a network
	       server process, that is,	inetd(1M) or dnserver, and enables
	       output of all dgld-originated error messages to the system log
	       maintained by syslogd(1M).

     -M	       Disables	all message output.

     -D	debuglevel
	       Sets the	level of debugging messages, ranging from 0 (lowest)
	       to 4 (highest), to be reported when debugging applications
	       linked with the Distributed Graphics Library.

     -m	msgfile
	       Writes debugging	and error messages to msgfile.





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DGLD(1M)							      DGLD(1M)



     -t	type   Sets the	connection type.  Type can be one of DGLTSOCKET	for a
	       TCP socket or DGL4DDN for DECnet.

     -p	port   Sets the	port number used for a TCP socket connection.

DIAGNOSTICS    [Toc]    [Back]

     Normally operation	produces no diagnostic output unless an	error occurs.
     All error messages	are output to stderr unless otherwise redirected with
     the -m option.  When dgld is started from inetd or	dnserver both the -M
     and -I options are	given.

SEE ALSO    [Toc]    [Back]

     inetd (1M), rsh(1M), ruserok(3N), syslogd(1M)


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