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