Date: Thu, 14 Dec 1995 00:48:27 +0300 (MSK) From: =?KOI8-R?Q?=E1=CE=C4=D2=C5=CA_=FE=C5=D2=CE=CF=D7?= (aka Andrey A. Chernov, Black Mage) <ache@astral.msk.su> To: Bruce Evans <bde@zeta.org.au>, Terry Lambert <terry@lambert.org> Cc: eugen@rd.zgik.zaporizhzhe.ua, hackers@FreeBSD.ORG, yura@rd.zgik.zaporizhzhe.ua Subject: Re: bug or feature in kern/tty.c Message-ID: <bbheqpmuq3@ache.dialup.ru> In-Reply-To: <Wb06ppmuW2@ache.dialup.ru>; from =?KOI8-R?Q?=E1=CE=C4=D2=C5=CA_=FE=C5=D2=CE=CF=D7?= at Wed, 13 Dec 1995 23:03:12 %2B0300 (MSK) References: <199512131818.LAA03398@phaeton.artisoft.com> <Wb06ppmuW2@ache.dialup.ru>
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In message <Wb06ppmuW2@ache.dialup.ru> =?KOI8-R?Q?=E1=CE=C4=D2=C5=CA_=FE=C5=D2=CE=CF=D7?= writes: >In message <199512131818.LAA03398@phaeton.artisoft.com> Terry Lambert > writes: >>> >I found strange thing in 2.1.0-RELEASE (and -current) in kern/tty.c. >>> >When carrier was lossed then ttymodem() set TS_ZOMBIE and clear >>> >TS_CONNECTED in tp->t_state. But TS_ZOMBIE is cleared only in ttioctl() >>> >TIOCSETA* when line is setted to ignore modem status and when line is closed. >>> >>> POSIX says that (what I call the) zombie state remains until the line is >>> closed. Clearing it when CLOCAL is raised is a special hack that helped >>> very old (1.1.5) versions of slattach and perhaps other broken programs >>> work right. >>FYI: Of the 120 or so UNIX systems I ported TERM to while I was >>at Century Software, only SCO Xenix 2.3.0 behaved this way, and they >>fixed it in 2.3.1 after we reported the bug. >BTW, it seems we talk about different things. As I understand the original >problem, the question is: WHY SLATTACH NOT RECONNECTS WHEN CARRIER >ESTABLISHED AGAIN (AUTOMATICALLY BY MODEM)? >I.e. >1) driver needs to track carrier when in TS_ZOMBI and >set TS_CONNECTED, clear TS_ZOMBI when carrier >appearse on the line. >2) Slattach not need exit on SIGHUP but wait reasonable time >until carrier will be up again. I mean of course that CLOCAL turned on, i.e. slattach only controls line and establish carrier on them, not other program. So partial question is: is it possible to fix sio to send SIGHUP to controlling terminal even when CLOCAL is set? -- Andrey A. Chernov : And I rest so composedly, /Now, in my bed, ache@astral.msk.su : That any beholder /Might fancy me dead - http://dt.demos.su/~ache : Might start at beholding me, /Thinking me dead. RELCOM Team,FreeBSD Team : E.A.Poe From "For Annie" 1849
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