When the EXTPROC bit is being turned off, and we
check to see if it was on so that we can notify the user,
we were looking at the t_state field instead of the t_lflag
field, which is where it is kept.

return types, 64-bit changes: ioctl cmd -> u_long, casts, etc.

changes for 4.4BSD-Lite requested by USL

4.4BSD snapshot (revision 8.1); add 1993 to copyright

missing ptcwakeup needed for line-mode telnet

ptyattach (#ifdef notyet); don't need #if NPTY > 0

make kernel includes standard

MIN -> min, MAX -> max

return codes for pt[sc]close (and exactly *what* if they fail???)

gcc lint

convert to use new select interface, selrecord/selwakeup

SunOS compatibility; misc cleanups

eliminate code to protect against berknet

make file flags consistent

pass flags through device close and l_close

rm user.h; new device calling conventions; ansify

more-or-less working with new proc & user structs

don't indirect thru uninit'ed iov in ptcwrite; change ptcwrite like ttwrite
to avoid mucking in the iov's; switch to u_char so we don't have to mask

Fix for TIOCSIG: pgsignal() was being called with
one too few arguments. Add special case for SIGINFO to call
ttyinfo().

new copyright notice

duplicate TIOCGPGRP for controller - minus the check for controlling terminal

use ttysleep to catch revoked terminals

telnet line mode changes

pgsignal takes an extra arg

tsleep; unwind on interrupt