Provided by: x11-xserver-utils_7.3+2_i386 bug


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


       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


       Sessreg is a simple program for  managing  utmp/wtmp  entries  for  xdm

       System  V  has  a  better  interface  to  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, 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 the utmp file 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 than /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  and  Linux  also  have  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.


       In Xstartup, place a call like:

              sessreg -a -l $DISPLAY -x /etc/X11/xdm/Xservers $USER

       and in Xreset:

              sessreg -d -l $DISPLAY -x /etc/X11/xdm/Xservers $USER


       -w wtmp-file
              This specifies an alternate wtmp file, instead of /var/log/wtmp.
              The special name "none" disables writing  records  to  the  wtmp

       -u utmp-file
              This specifies an alternate utmp file, instead of /var/run/utmp.
              The special name "none" disables writing  records  to  the  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/ttysfile.   This  option  overrides  the  default  position
              determined  with  ttyslot(3).   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.

       -a     This session should be added to utmp/wtmp.

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




       Keith Packard, MIT X Consortium