TTYACTION(3)						   BSD Library Functions Manual 					      TTYACTION(3)

NAME

     ttyaction -- ttyaction utility function

LIBRARY

     System Utilities Library (libutil, -lutil)

SYNOPSIS

     #include <util.h>

     int
     ttyaction(char *ttyname, char *action, char *username);

DESCRIPTION

     The ttyaction() function is used by login(1), getty(8), telnetd(8) and rlogind(8) to execute site-specific commands when a login session
     begins and ends.

     The ttyaction() function scans the /etc/ttyaction file for any records that match the current ttyname and action parameters, and for each
     matching record, runs the shell command shown in that record.  The record format is described in ttyaction(5).  The parameter username is the
     name of the new owner of the ttyname device.  Note that the ttyname parameter may be passed as a fully qualified pathname, and the
     ttyaction() function will skip the leading "/dev/" part of the string.  (This is a convenience for login and getty.)

RETURN VALUES

     ttyaction() returns the status of the last command it executed, or zero if no matching commands were found.

FILES

     /dev/*
     /etc/ttyaction

SEE ALSO

     ttyaction(5)

AUTHORS

     Gordon W. Ross <gwr@NetBSD.org>,
     Chris G. Demetriou <cgd@NetBSD.org>,
     Ty Sarna <tsarna@NetBSD.org>.

BUGS

     There should be some other mechanism to allow selection of different access control policies on a per-line basis.	It has been suggested that
     the same ttyaction() mechanism should also be used for determining access control, but it was decided (after much discussion) that
     ttyaction() should only describe actions to be performed after the system has decided to change the ownership of some tty.  Access control
     policies will be handled by a separate mechanism.

BSD
								    May 4, 2010 							       BSD