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Date: Mon, 6 Nov 2000 20:46:38 -0800 (PST)
From: dean gaudet <dean-list-linux-kernel@arctic.org>
To: George Talbot <george@brain.moberg.com>
cc: Marc Lehmann <pcg@goof.com>, linux-kernel@vger.kernel.org
Subject: Re: Can EINTR be handled the way BSD handles it? -- a plea from a
 user-land  programmer...
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On Mon, 6 Nov 2000, George Talbot wrote:

> I respectfully disagree that programs which don't surround some of the
> most common system calls with
> 
> 	do
> 	{
> 		rv = __some_system_call__(...);
> 	} while (rv == -1 && errno == EINTR);

welcome to Unix.  this is how it is, and it's not just linux.  and it's
not just glibc/linuxthreads.  in your code do you go about setting all
signals to SA_RESTART?  if not then you're subject to the vagaries of
whatever the default signal settings are.

ted mentioned ^Z... there's also strace/truss/ktrace (depending on your
flavour of unix).  there's also page-out/in (and on some unixes there's
swap-out/in).

it's something which bites lots of folks.  gnu tar had this bug for at
least 5 years, and may still have it -- i got tired of submitting the bug
fix.

-dean

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