NAME
sessreg - manage utmp/wtmp entries for non-init clients
SYNOPSIS
sessreg
[-w _w_t_m_p_-_f_i_l_e]
[-u _u_t_m_p_-_f_i_l_e]
[-l _l_i_n_e_-_n_a_m_e]
[-h _h_o_s_t_-_n_a_m_e]
[-s _s_l_o_t_-_n_u_m_b_e_r]
[-x _X_s_e_r_v_e_r_s_-_f_i_l_e]
[-t _t_t_y_s_-_f_i_l_e]
[-a]
[-d]
_u_s_e_r_-_n_a_m_e
DESCRIPTION
_S_e_s_s_r_e_g is a simple program for managing utmp/wtmp
entries for xdm 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, _s_e_s_s_r_e_g 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
/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
_s_e_s_s_r_e_g 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,
_s_e_s_s_r_e_g 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
_s_e_s_s_r_e_g.
USAGE
In Xstartup, place a call like:
sessreg -a -l $DISPLAY -x /usr/X11R6/lib/xdm/Xservers $USER
and in Xreset:
sessreg -d -l $DISPLAY -x /usr/X11R6/lib/xdm/Xservers $USER
OPTIONS
-
--ww _w_t_m_p_-_f_i_l_e
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.
-
--uu _u_t_m_p_-_f_i_l_e
This specifies an alternate utmp file, instead of "/etc/utmp". The special
-
name "none" disables writing records to /etc/utmp.
-
--ll _l_i_n_e_-_n_a_m_e
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.
-
--hh _h_o_s_t_-_n_a_m_e
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.
-
--ss _s_l_o_t_-_n_u_m_b_e_r
Each potential session has a unique slot number in BSD systems, most are
-
identified by the position of the _l_i_n_e_-_n_a_m_e in the /etc/ttys file.
This option overrides the default position determined with ttyslot(3).
This option is inappropriate for use with xdm, the -x option is more useful.
-
--xx _X_s_e_r_v_e_r_s_-_f_i_l_e
As X sessions are one-per-display, and each display is entered in this file,
-
this options sets the _s_l_o_t_-_n_u_m_b_e_r to be the number of lines in
the _t_t_y_s_-_f_i_l_e plus the index into this file that the _l_i_n_e_-_n_a_m_e
is found.
-
--tt _t_t_y_s_-_f_i_l_e
This specifies an alternate file which the _-_x option will use to count
-
the number of terminal sessions on a host.
-
--aa
This session should be added to utmp/wtmp.
-
-
--dd
This session should be deleted from utmp/wtmp. One of -a/-d must
-
be specified.
SEE ALSO
xdm(1)
AUTHOR
Keith Packard, MIT X Consortium