linux-kernel - Re: strace, accept(), ERESTARTSYS and EINTR

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Message-ID: <jed4sgjkhh.fsf@sykes.suse.de>
Date:	Sat, 05 Jan 2008 17:38:34 +0100
From:	Andreas Schwab <schwab@...e.de>
To:	"Phil Endecott" <phil_wueww_endecott@...zphil.org>
Cc:	"Jiri Slaby" <jirislaby@...il.com>, <linux-kernel@...r.kernel.org>,
	" Frederik Deweerdt" <deweerdt@...e.fr>
Subject: Re: strace, accept(), ERESTARTSYS and EINTR

"Phil Endecott" <phil_wueww_endecott@...zphil.org> writes:

> However, there's a lot of code and I know that there are bugs in it.  I
> just want to focus on the kernel-related issue that the strace fragment
> that I posted brings up:  even if my user code gets completely screwed up
> (corrupts its stack, runs out of FDs/VM/threads etc), I don't think that I
> should see in the strace output that accept() has returned
> ERESTARTSYS.

strace always sees the raw return value, before the signal handler is
executed and before the check for syscall restart is done.

Andreas.

-- 
Andreas Schwab, SuSE Labs, schwab@...e.de
SuSE Linux Products GmbH, Maxfeldstraße 5, 90409 Nürnberg, Germany
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