NAME

sessreg − manage utmp/wtmp entries for non-init clients

SYNOPSIS

sessreg [-w wtmp-file] [-u utmp-file] [-l line-name] [-h host-name] [-s slot-number] [-x Xservers-file] [-t ttys-file] [-a] [-d] user-name

DESCRIPTION

Sessreg is a simple program for managing utmp/wtmp entries for xdm(1) sessions. 

System V has a better interface to /etc/utmp than BSD; it dynamically allocates entries in the file, instead of writing them at fixed positions indexed by position in /etc/ttys. 

To manage BSD-style utmp files, sessreg has two strategies.  In conjunction with xdm(1), the -x option counts the number of lines in /etc/ttys and then adds to that the number of the line in the Xservers file which specifies the display.  The display name must be specified as the "line-name" using the -l option.  This sum is used as the "slot-number" in /etc/utmp that this entry will be written at.  In the more general case, the -s option specifies the slot-number directly.  If for some strange reason your system uses a file other that /etc/ttys to manage init, the -t option can direct sessreg to look elsewhere for a count of terminal sessions. 

Conversely, System V managers will not ever need to use these options (-x, -s and -t).  To make the program easier to document and explain, sessreg accepts the BSD-specific flags in the System V environment and ignores them. 

BSD also has a host-name field in the utmp file which doesn’t exist in System V.  This option is also ignored by the System V version of sessreg. 

USAGE

In Xstartup, place a call like:

       sessreg -a -l $DISPLAY -x /usr/openwin/lib/X11/xdm/Xservers $USER

and in Xreset:

       sessreg -d -l $DISPLAY -x /usr/openwin/lib/X11/xdm/Xservers $USER

OPTIONS

-w wtmp-file
This specifies an alternate wtmp file, instead of /usr/adm/wtmp for BSD or /etc/wtmp for sysV.  The special name "none" disables writing records to /usr/adm/wtmp.

-u utmp-file
This specifies an alternate utmp file, instead of "/etc/utmp".  The special name "none" disables writing records to /etc/utmp.

-l line-name
This describes the "line" name of the entry.  For terminal sessions, this is the final pathname segment of the terminal device filename (e.g. ttyd0).  For X sessions, it should probably be the local display name given to the users session (e.g. :0).  If none is specified, the terminal name will be determined with ttyname(3) and stripped of leading components.

-h host-name
This is set for BSD hosts to indicate that the session was initiated from a remote host.  In typical xdm usage, this options is not used.

-s slot-number
Each potential session has a unique slot number in BSD systems, most are identified by the position of the line-name in the /etc/ttys file.  This option overrides the default position determined with ttyslot(3C).  This option is inappropriate for use with xdm, the -x option is more useful. 

-x Xservers-file
As X sessions are one-per-display, and each display is entered in this file, this options sets the slot-number to be the number of lines in the ttys-file plus the index into this file that the line-name is found. 

-t ttys-file
This specifies an alternate file which the -x option will use to count the number of terminal sessions on a host. 

-aThis session should be added to utmp/wtmp. 

-dThis session should be deleted from utmp/wtmp.  One of -a/-d must be specified. 

SEE ALSO

xdm(1)

COPYRIGHT

Copyright 1988, Massachusetts Institute of Technology. 
See X11(7) for a full statement of rights and permissions. 

AUTHOR

Keith Packard, MIT X Consortium

SunOS 5.5/x86  —  Last change: 23 February 1994