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Message-ID: <20110722082605.GB3593@albatros>
Date: Fri, 22 Jul 2011 12:26:06 +0400
From: Vasiliy Kulikov <segoon@...nwall.com>
To: musl@...ts.openwall.com
Subject: Re: some fixes to musl
On Fri, Jul 22, 2011 at 00:30 -0400, Rich Felker wrote:
> On Thu, Jul 21, 2011 at 09:57:39PM -0400, Rich Felker wrote:
> > > forkpty():
> > > - It should be guaranteed that master fd is closed, tty is setup, slave
> > > fd is dup'ed to 1,2,3. The latter can be broken by setting small
> > > rlimit. setsid() is checked for company :) I think the only way to
> > > handle the failure is _exit(). While it may be not the best choise,
> > > however, continuing the work with half dropped privileges is more
> > > dangerous.
> > >
> > > openpty():
> > > - close() shouldn't change errno updated by failed ioctl()/open().
> > > - I suppose the last calls to tcsetattr() and ioctl() may fail too.
> >
> > Going to try to find a good solution for these...
>
> I believe I've fixed forkpty's issue with fd exhaustion. Please tell
> me if anything seems wrong.
Looks like it fixes the problem with *expected* dup2() failures.
However, I'm still worried about theoretical (*m) leaking...
--
Vasiliy
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