Date: Fri, 21 Jul 1995 09:31:00 -0700 From: Bruce Evans <bde> To: CVS-commiters, cvs-sys Subject: cvs commit: src/sys/i386/isa/pcvt pcvt_drv.c Message-ID: <199507211631.JAA09563@freefall.cdrom.com>
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bde 95/07/21 09:30:59
Modified: sys/gnu/isdn iitty.c
sys/kern tty.c tty_pty.c
sys/i386/isa/pcvt pcvt_drv.c
Log:
Obtained from: partly from an ancient patch of mine via 1.1.5
Temporarily nuke TS_WOPEN. It was only used for the obscure MDMBUF
flow control option in the kernel and for informational purposes
in `pstat -t'. The latter worked properly only for ptys. In
general there may be multiple processes sleeping in open() and
multiple processes that successfully opened the tty by opening it
in O_NONBLOCK mode or during a window when CLOCAL was set. tty.c
doesn't have enough information to maintain the flag but always
cleared it in ttyopen().
TS_WOPEN should be restored someday just so that `pstat -t' can
display it (MDMBUF is already fixed). Fixing it requires counting
of processes sleeping in open() in too many serial drivers.
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