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Date: Fri, 5 Oct 2001 19:30:49 -0400
From: Alex Pennace <alex@pennace.org>
To: Neil Brown <neilb@cse.unsw.edu.au>
Cc: Bernd Eckenfels <ecki@lina.inka.de>, linux-kernel@vger.kernel.org
Subject: Re: Desperately missing a working "pselect()" or similar...
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	Bernd Eckenfels <ecki@lina.inka.de>, linux-kernel@vger.kernel.org
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On Sat, Oct 06, 2001 at 09:21:38AM +1000, Neil Brown wrote:
> On Friday October 5, alex@pennace.org wrote:
> > The select system call doesn't return EINTR when the signal is caught
> > prior to entry into select.
> 
> A technique I used in a similar situation once went something like:
> 
> tv.tv_sec=bignum;
> tv.tv_usec = 0;
> enable_signals();
> select(nfds, &readfds,&writefds,0,&tv);
> 
> and have the signal handlers set tv.tv_sec to 0. (tv is a global
> variable).

I've thought about that, but I haven't been able to find any guarantee
that there will be no user space futzing around with &tv, like a
library wrapper that copies tv to another spot in memory and invokes
the syscall with that address.
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