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SESSREG(1)                                                          SESSREG(1)




NAME

       sessreg - manage utmpx/wtmpx entries for non-init clients


SYNOPSIS

       sessreg  [-w  wtmpx-file]  [-u  utmpx-file] [-L lastlog-file] [-l line-
       name] [-h host-name] [-s slot-number] [-x Xservers-file] [-t ttys-file]
       [-V] [-a] [-d] user-name


DESCRIPTION

       Sessreg  is  a  simple  program  for  managing  utmpx/wtmpx and lastlog
       entries for xdm sessions.

       System V has a better interface to utmp than BSD; it dynamically  allo-
       cates  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  con-
       junction  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.

       This version of sessreg is built using the modern POSIX  pututxline(3c)
       interfaces,  which  no  longer  require  the slot-number, ttys-file, or
       Xservers-file mappings.  For  compatibility  with  older  versions  and
       other  operating  systems,  the  -s, -t, and -x flags are accepted, but
       ignored.


USAGE

       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


OPTIONS

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

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

       -L lastlog-file
              This specifies an alternate lastlog file, instead  of  lastlogx,
              if the platform supports lastlog files.  The special name "none"
              disables writing records to the lastlog file.

       -l line-name
              This describes the "line" name of the entry.  For terminal  ses-
              sions, 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  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.   This  option  is
              accepted  for compatibility, but does nothing in this version of
              sessreg.

       -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.  This option is accepted for compatibility,
              but does nothing in this version of sessreg.

       -t ttys-file
              This specifies an alternate file which the -x option will use to
              count the number of terminal sessions on a host.  This option is
              accepted for compatibility, but does nothing in this version  of
              sessreg.

       -V     This option causes the command to print its version and exit.

       -a     This session should be added to utmpx/wtmpx.

       -d     This  session  should be deleted from utmpx/wtmpx.  One of -a/-d
              must be specified.


SEE ALSO

       xdm(1), utmpx(5), wtmpx(5)


AUTHOR

       Keith Packard, MIT X Consortium



                                 X Version 11                       SESSREG(1)