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NetBSD 6.1.5 - man page for supservers (netbsd section 8)


       supfilesrv, supscan - sup server processes

       supfilesrv [ -4 ] [ -6 ] [ -d ] [ -l ] [ -q ] [ -N ] [ -P ] [ -C MaxChildren ]
       supscan [ -v ] [ -s ] [ collection ] [ basedir ]

       Supfilesrv  is  the  server  processes  used to interact with sup client processes via the
       IP/TCP network protocol.  This server  normally	is  expected  to  be  running  on  server
       machines  at all times.	Each machine with files of interest to users on other machines is
       expected to be a file server and should run supfilesrv.

       A file server machine will service requests for both "private" and "system"  file  collec-
       tions.	No special action is necessary to support private collections, as the client user
       is expected to supply all necessary information.  For  system  collections,  if	the  base
       directory  is  not  the default (see FILES below), an entry must be put into the directory
       list file; this entry is a single text line containing the name of the collection, one  or
       more spaces, and the name of the base directory for that collection.

       Each  collection  should  have an entry in the host list file; this entry is a single text
       line containing the name of the collection, one or more spaces, and the name of	the  host
       machine acting as file server for that collection.

       Details	of  setting  up a file collection for the file server are described in the manual
       entry for sup(1).

       Supfilesrv generally runs as a network server process that listens  for	connections,  and
       for  each  connection  (double-)forks a process to handle the interaction with the client.
       However, with the -d flag, no forking will take place: the server will listen for  a  net-
       work  connection, handle it, and exit.  This is useful for debugging the servers in "live"
       mode rather than as daemons.

       For debugging purposes, the -P "debugging ports" flag can be  used.   It  will  cause  the
       selection  of  an  alternate,  non-privileged set of TCP ports instead of the usual ports,
       which are reserved for the active server processes.  The -N "network debugging"	flag  can
       be  used  to produce voluminous messages describing the network communication progress and
       status. The more -N switches that you use the more output you get.  Use	3  (separated  by
       spaces:	-N  -N	-N)  to  get  a complete record of all network messages. Log messages are
       printed by syslog on daemon.log .  To suppress log messages, the -q "quiet"  flag  can  be

       supfilesrv  uses  libwrap  style  access control (the /etc/hosts.allow and /etc/hosts.deny
       files) with service name "supfilesrv". The -l "log" flag turn on loggin of  accepted  con-
       nections (denied connections are always logged).

       Normally  the  supfilesrv  will only respond to 3 requests simultaneously, forking a child
       process for each client. If it gets additional requests it will	respond  with  the  error
       FSSETUPBUSY. The -C MaxChildren switch can be used to increase (or decrease) this number.

       supfilesrv  listens to IPv4 listening socket by default.  With the -6 flag, it will listen
       to IPv6 listening socket.  For dual stack support you will want to run  two  instances  of

       It  is possible to pre-compile a list of the files in a collection to make supfilesrv ser-
       vice that collection much faster.  This can be done by running supscan on the desired col-
       lection	on  the repository machine.  This produces a list of all the files in the collec-
       tion at the time of the supscan; subsequent upgrades will be based on this list	of  files
       rather than actually scanning the disk at the time of the upgrade.  Of course, the upgrade
       will consequently bring the client machine up to the status of the repository  machine  as
       of the time of the supscan rather than as of the time of the upgrade; hence, if supscan is
       used, it should be run periodically on  the  collection.   This	facility  is  useful  for
       extremely  large  file  collections  that are upgraded many times per day, such as the CMU
       UNIX system software.  The "verbose" flag -v will cause supscan to produce output messages
       as  it scans the files in the collection.  The "system" flag -s will cause supscan to scan
       all system collections residing on the current host.  The basedir parameter must be speci-
       fied if the collection is a private collection whose base directory is not the default.

       /usr   default base directory for a collection

	      base directory list for system collections

	      host name list for system collections

	      files used by file server (see sup(1))

	      list file used by supscan to create file list

	      file list created by supscan from list file

       sup(1) hosts_access(5) hosts_options(5)
       The SUP Software Upgrade Protocol, S.  A.  Shafer, CMU Computer Science Dept., 1985.

       The  file  server  places  log  messages on the standard and diagnostic output files.  The
       process name and process id number generally accompany each message  for  diagnostic  pur-

       31-July-92 Mary Thompson (mrt) at Carnegie Mellon University
	      Removed references to supnameserver which has not existed for a long time. Update a
	      few file names. Added -C switch.

       21-May-87  Glenn Marcy (gm0w) at Carnegie-Mellon University
	      Updated documentation for 4.3; changed /usr/cmu to /usr/cs.

       15-Jan-86  Glenn Marcy (gm0w) at Carnegie-Mellon University
	      Updated documentation; -s switch to supscan.

       23-May-85  Steven Shafer (sas) at Carnegie-Mellon University
	      Supscan created and documented; also -N flag.

       04-Apr-85  Steven Shafer (sas) at Carnegie-Mellon University

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