Provided by: sup_20100519-1_amd64 bug


       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
       collections.  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
       network  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
       connections (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
       service that collection much faster.  This can be done by running supscan on  the  desired
       collection  on  the  repository  machine.   This  produces  a list of all the files in the
       collection 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
       specified  if  the  collection  is  a  private  collection whose base directory is not the


       /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


       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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