NAME

fget.demon, fget.odemon − fget daemons

SYNOPSIS

/etc/fget.demon time
/etc/fget.odemon time

DESCRIPTION

Fget.demon and fget.odemon are daemons for the 210 dataphone or spider.  They are designed to retrieve files that have been requested by fget(1) from the Honeywell 6070 computer. The argument time is the number of seconds for fget.demon to wait for files to appear from GRTS.  The default is 6 minutes.  Fget.demon is automatically initiated by fget, and by cron (1). 

On systems with both a spider and a dataphone connection to the Honeywell 6070 computer, fget.demon uses spider, and fget.odemon uses the dataphone, and is called automatically as a backup when the spider connection is down.  On other systems, there is only one fget daemon, fget.demon, which use the dataphone. 

The daemons use the spooling directory /usr/dpd.  The file glock in that directory is used to prevent two daemons from becoming active.  After the program has successfully set the lock, it forks and the main path exits, thus spawning the daemon.  GRTS is interrogated for any output for the daemon’s station-id.  If none, fget.demon will wait up to time seconds, interrogating GRTS every minute or so to see if any output has arrived.  All problems and successful transactions are recorded in the errors file in the spooling directory. 

To restart fget.demon (in the case of hardware or software malfunction), it is necessary to first kill the old fget.demon (if still alive), and remove the lock file before initiating fget.demon.  This is done automatically when the system is brought up, by /etc/rc (see init(1)) in case there are any jobs waiting to come over.

FILES

/usr/dpd/* spool area
/dev/du* dataphone device
/dev/dn* acu device
/dev/tiu/d2 spider device

SEE ALSO

fget(1), dpd(1)

7th Edition