102 lines
3.8 KiB
Plaintext
102 lines
3.8 KiB
Plaintext
.TH SESSREG 1 "Release 5" "X Version 11"
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.SH NAME
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sessreg \- manage utmp/wtmp entries for non-init clients
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.SH SYNOPSIS
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.B sessreg
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[-w \fIwtmp-file\fP]
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[-u \fIutmp-file\fP]
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[-l \fIline-name\fP]
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[-h \fIhost-name\fP]
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[-s \fIslot-number\fP]
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[-x \fIXservers-file\fP]
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[-t \fIttys-file\fP]
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[-a]
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[-d]
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\fIuser-name\fP
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.SH DESCRIPTION
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.PP
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\fISessreg\fP is a simple program for managing utmp/wtmp
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entries for xdm sessions.
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.PP
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System V has a better interface to /etc/utmp than BSD; it
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dynamically allocates entries in the file, instead of writing them at fixed
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positions indexed by position in /etc/ttys.
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.PP
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To manage BSD-style utmp files, \fIsessreg\fP has two strategies. In
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conjunction with xdm, the -x option counts the number of lines in /etc/ttys
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and then adds to that the number of the line in the Xservers file which
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specifies the display. The display name must be specified as the
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"line-name" using the -l option. This sum is used as the "slot-number" in
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/etc/utmp that this entry will be written at. In the more general case, the
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-s option specifies the slot-number directly. If for some strange reason
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your system uses a file other that /etc/ttys to manage init, the -t option
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can direct
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\fIsessreg\fP to look elsewhere for a count of terminal sessions.
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.PP
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Conversely, System V managers will not ever need to use these options (-x,
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-s and -t). To make the program easier to document and explain,
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\fIsessreg\fP accepts the BSD-specific flags in the System V
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environment and ignores them.
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.PP
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BSD also has a host-name field in the utmp file which doesn't exist in
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System V. This option is also ignored by the System V version of
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\fIsessreg\fP.
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.SH USAGE
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.PP
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In Xstartup, place a call like:
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.nf
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sessreg -a -l $DISPLAY -x /usr/lib/X11/xdm/Xservers $USER
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.fi
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and in Xreset:
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.nf
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sessreg -d -l $DISPLAY -x /usr/lib/X11/xdm/Xservers $USER
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.fi
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.SH OPTIONS
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.IP "\fB-w\fP \fIwtmp-file\fP"
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This specifies an alternate wtmp file, instead of /usr/adm/wtmp for BSD or
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/etc/wtmp for sysV. The special name "none" disables writing records to
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/usr/adm/wtmp.
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.IP "\fB-u\fP \fIutmp-file\fP"
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This specifies an alternate utmp file, instead of "/etc/utmp". The special
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name "none" disables writing records to /etc/utmp.
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.IP "\fB-l\fP \fIline-name\fP"
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This describes the "line" name of the entry. For terminal sessions,
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this is the final pathname segment of the terminal device filename
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(e.g. ttyd0). For X sessions, it should probably be the local display name
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given to the users session (e.g. :0). If none is specified, the
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terminal name will be determined with ttyname(3) and stripped of leading
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components.
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.IP "\fB-h\fP \fIhost-name\fP"
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This is set for BSD hosts to indicate that the session was initiated from
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a remote host. In typical xdm usage, this options is not used.
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.IP "\fB-s\fP \fIslot-number\fP"
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Each potential session has a unique slot number in BSD systems, most are
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identified by the position of the \fIline-name\fP in the /etc/ttys file.
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This option overrides the default position determined with ttyslot(3).
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This option is inappropriate for use with xdm, the -x option is more useful.
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.IP "\fB-x\fP \fIXservers-file\fP"
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As X sessions are one-per-display, and each display is entered in this file,
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this options sets the \fIslot-number\fP to be the number of lines in
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the \fIttys-file\fP plus the index into this file that the \fIline-name\fP
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is found.
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.IP "\fB-t\fP \fIttys-file\fP"
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This specifies an alternate file which the \fI-x\fP option will use to count
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the number of terminal sessions on a host.
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.IP "\fB-a\fP"
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This session should be added to utmp/wtmp.
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.IP "\fB-d\fP"
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This session should be deleted from utmp/wtmp. One of -a/-d must
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be specified.
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.SH "SEE ALSO"
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xdm(1)
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.SH COPYRIGHT
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Copyright 1988, Massachusetts Institute of Technology.
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.br
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See \fIX(1)\fP for a full statement of rights and permissions.
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.SH AUTHOR
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Keith Packard, MIT X Consortium
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