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 overflows 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 process.
-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 configuration 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 implementation 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 specify. 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 separator.
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.
