From: Karel Zak <kzak@redhat.com>
To: Adam Sampson <ats@offog.org>
Cc: Thorsten Glaser <tg@mirbsd.org>, util-linux@vger.kernel.org
Subject: Re: script from 2.25.1 may be broken (hangs)
Date: Thu, 9 Oct 2014 14:21:23 +0200 [thread overview]
Message-ID: <20141009122123.GG8057@x2.net.home> (raw)
In-Reply-To: <y2a7g09a50k.fsf@cartman.at.offog.org>
On Thu, Oct 09, 2014 at 11:53:15AM +0100, Adam Sampson wrote:
> Thorsten Glaser <tg@mirbsd.org> writes:
>
> > $ script -qc './test.sh -v' </dev/null 2>&1 | tee log
>
> For me, this doesn't hang, but it does exit before test.sh is actually
> finished. Here's a simpler example that does the same thing:
>
> $ cat simpler.sh
> #!/bin/sh
> echo one
> sleep 2
> echo two
> $ script -c './simpler.sh'
> Script started, file is typescript
> one
> two
> Script done, file is typescript
> $ script -c './simpler.sh' </dev/null
> Script started, file is typescript
> one
> Script done, file is typescript
>
> The "wait for children" code at the end of doinput looks suspicious to
> me -- finish() doesn't actually block, as the comment implies, just
hmm.. because WNOHANG, it seems we need a one function for signal
handler (with WNOHANG) and another function for the real program
termination (without WNOHANG).
Karel
--
Karel Zak <kzak@redhat.com>
http://karelzak.blogspot.com
next prev parent reply other threads:[~2014-10-09 12:21 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-10-08 22:25 script from 2.25.1 may be broken (hangs) Thorsten Glaser
2014-10-09 10:53 ` Adam Sampson
2014-10-09 12:21 ` Karel Zak [this message]
2014-10-09 13:25 ` Fwd: " Thorsten Glaser
2014-10-14 10:12 ` Karel Zak
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