linux-kernel - Re: compat_sys_times() bogus until jiffies >= 0.

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Date:	Wed, 07 Nov 2007 22:25:30 -0800 (PST)
From:	David Miller <davem@...emloft.net>
To:	akpm@...ux-foundation.org
Cc:	paulus@...ba.org, lkml@...idb.org, linux-kernel@...r.kernel.org,
	drepper@...hat.com, mtk-manpages@....net
Subject: Re: compat_sys_times() bogus until jiffies >= 0.

From: Andrew Morton <akpm@...ux-foundation.org>
Date: Wed, 7 Nov 2007 21:20:05 -0800

> Yup.  But userspace will already have a fit if either the start or end time
> advanced into the glibc-thought-that-was-an-error range.

On x86 only.  We could use force_successful_syscall_return()
to make sure the condition codes get set correctly on
other platforms.

But even in that case we'd still be broken when the return
value is exactly -1 and that's what the application is going
to compare against to test for errors.
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