Date: Sat, 23 May 1998 18:14:59 +0100 From: Brian Somers <brian@Awfulhak.org> To: Bruce Evans <bde@zeta.org.au> Cc: brian@Awfulhak.org, julian@whistle.com, archie@whistle.com, freebsd-current@FreeBSD.ORG Subject: Re: **HEADS UP** user-ppp has changed ! Message-ID: <199805231715.SAA16534@awfulhak.org> In-Reply-To: Your message of "Sun, 24 May 1998 00:01:03 %2B1000." <199805231401.AAA27232@godzilla.zeta.org.au>
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> >I've now tested against mpd for a single link. Unfortunately, ppp
> >still has a known bug playing server mode. It can't continue to use
> >real tty device descriptors after they've been passed through a local
> >socket (via SCM_RIGHTS) - as soon as the controlling process group
> >goes away, a d_close happens at the device level despite the open
> >descriptor. AFAICT this is *not* just a descriptor-passing-through-socket
> >bug - my diagnostics see the devices' d_close being called more than
> >once even before the descriptor has had anything special done to it.
> >See my unanswered posting to -hackers with a subject line ``SCM_RIGHTS
> >& session ids''....
>
> Access to a controlling terminal is revoked when its controlling process
> goes away. See kern_exit.c.
Is there any way of avoiding this ? Perhaps relinquishing terminal
control up front, *then* passing the descriptor ?
The only other alternative is to keep a `/bin/cat' running - in which
case I may as well do the `two /bin/cat' approach.... that way they
get a SIGPIPE when something goes wrong and everything dies nicely.
> Bruce
--
Brian <brian@Awfulhak.org>, <brian@FreeBSD.org>, <brian@OpenBSD.org>
<http://www.Awfulhak.org>;
Don't _EVER_ lose your sense of humour....
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