xfs



XFS(1)                                                                  XFS(1)




NAME

       xfs - X font server


SYNOPSIS

       xfs   [-config  configuration_file]  [-daemon]  [-droppriv]  [-ls  lis-
       ten_socket] [-nodaemon] [-port tcp_port] [-user username]


DESCRIPTION

       Xfs is the X Window System font server.  It supplies fonts to X  Window
       System display servers.


STARTING THE SERVER

       The  server  is  usually run by a system administrator, and started via
       boot files like /etc/rc.local.  Users may also wish  to  start  private
       font servers for specific sets of fonts.


OPTIONS

       -config configuration_file
               Specifies  the configuration file the font server will use.  If
               this  parameter   is   not   specified,   the   default   file,
               /usr/X11R6/lib/X11/fs/config will be used.

       -ls listen_socket
               Specifies  a file descriptor which is already set up to be used
               as the listen socket.  This option is only intended to be  used
               by  the  font server itself when automatically spawning another
               copy of itself to handle additional connections.

       -port tcp_port
               Specifies the TCP port number on which the server  will  listen
               for connections.  The default port number is 7100.

       -daemon Instructs  xfs to fork and go into the background automatically
               at startup  If this option is not specified, xfs will run as  a
               regular process (unless xfs was built to daemonize by default).

       -droppriv
               If specified, xfs will attempt to run as  user  and  group  xfs
               (unless  the  -user  option is used). This has been implemented
               for security reasons, as xfs may have undiscovered buffer over-
               flows  or  other  paths  for  possible  exploit, both local and
               remote.  With this option, you may also wish  to  specify  "no-
               listen  =  tcp" in the config file, which ensures that xfs will
               not to use a TCP port at all.

       -nodaemon
               When xfs is built to  daemonize  (run  in  the  background)  by
               default, this prevents that and starts xfs up as a regular pro-
               cess.

       -user username
               This is equivalent to -droppriv except that  xfs  will  run  as
               user username.


SIGNALS

       SIGTERM This causes the font server to exit cleanly.

       SIGUSR1 This signal is used to cause the server to re-read its configu-
               ration file.

       SIGUSR2 This signal is used to cause the server  to  flush  any  cached
               data it may have.

       SIGHUP  This  signal  is used to cause the server to reset, closing all
               active connections and re-reading the configuration file.


CONFIGURATION

       The configuration language is a list of keyword and value pairs.   Each
       keyword is followed by an ’=’ and then the desired value.

       Recognized keywords include:


       catalogue (list of string)
              Ordered  list  of  font  path element names.  Use of the keyword
              "catalogue" is very misleading at present, the current implemen-
              tation  only supports a single catalogue ("all"), containing all
              of the specified fonts.

       alternate-servers (list of string)
              List of alternate servers for this font server.

       client-limit (cardinal)
              Number of clients this font server will support before  refusing
              service.   This is useful for tuning the load on each individual
              font server.

       clone-self (boolean)
              Whether this font server should attempt to clone itself when  it
              reachs the client-limit.

       default-point-size (cardinal)
              The default pointsize (in decipoints) for fonts that don’t spec-
              ify.  The default is 120.

       default-resolutions (list of resolutions)
              Resolutions the server supports by  default.   This  information
              may  be  used  as  a hint for pre-rendering, and substituted for
              scaled fonts which do not specify a resolution.  A resolution is
              a  comma-separated  pair  of  x  and y resolutions in pixels per
              inch.  Multiple resolutions are separated by commas.

       error-file (string)
              Filename of the error file.  All warnings  and  errors  will  be
              logged here.

       no-listen (trans-type)
              Disable  a  transport  type. For example, TCP/IP connections can
              be disabled with no-listen tcp

       port (cardinal)
              TCP port on which the server will listen for connections.

       use-syslog (boolean)
              Whether syslog(3) (on supported  systems)  is  to  be  used  for
              errors.

       deferglyphs (string)
              Set  the mode for delayed fetching and caching of glyphs.  Value
              is "none", meaning deferred glyphs is disabled,  "all",  meaning
              it  is  enabled  for  all fonts, and "16", meaning it is enabled
              only for 16-bits fonts.


EXAMPLE

       #
       # sample font server configuration file
       #

       # allow a max of 10 clients to connect to this font server
       client-limit = 10

       # when a font server reaches its limit, start up a new one
       clone-self = on

       # alternate font servers for clients to use
       alternate-servers = hansen:7101,hansen:7102

       # where to look for fonts
       # the first is a set of Speedo outlines, the second is a set of
       # misc bitmaps and the last is a set of 100dpi bitmaps
       #
       catalogue = /usr/X11R6/lib/X11/fonts/speedo,
            /usr/X11R6/lib/X11/fonts/misc,
            /usr/X11R6/lib/X11/fonts/100dpi/

       # in 12 points, decipoints
       default-point-size = 120

       # 100 x 100 and 75 x 75
       default-resolutions = 100,100,75,75
       use-syslog = off



FONT SERVER NAMES

       One of the following forms can be used  to  name  a  font  server  that
       accepts TCP connections:

           tcp/hostname:port
           tcp/hostname:port/cataloguelist

       The  hostname  specifies  the  name (or decimal numeric address) of the
       machine on which the font server is running.  The port is  the  decimal
       TCP  port  on  which the font server is listening for connections.  The
       cataloguelist specifies a list of catalogue names, with ’+’ as a  sepa-
       rator.

       Examples: tcp/fs.x.org:7100, tcp/18.30.0.212:7101/all.

       One  of  the  following  forms  can  be used to name a font server that
       accepts DECnet connections:

           decnet/nodename::font$objname
           decnet/nodename::font$objname/cataloguelist

       The nodename specifies the name (or decimal  numeric  address)  of  the
       machine  on which the font server is running.  The objname is a normal,
       case-insensitive DECnet object name.   The  cataloguelist  specifies  a
       list of catalogue names, with ’+’ as a separator.

       Examples:  DECnet/SRVNOD::FONT$DEFAULT, decnet/44.70::font$special/sym-
       bols.


SEE ALSO

       X(7x), The X Font Service Protocol,
       Font server implementation overview


BUGS

       Multiple catalogues should be supported.


AUTHORS

       Dave Lemke, Network Computing Devices, Inc
       Keith Packard, Massachusetts Institute of Technology



                                                                        XFS(1)

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