linux-kernel - Re: [PATCH 1/1] system call notification with self

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Message-Id: <1221063574.6781.8.camel@nimitz>
Date:	Wed, 10 Sep 2008 09:19:34 -0700
From:	Dave Hansen <dave@...ux.vnet.ibm.com>
To:	Pierre Morel <pmorel@...ux.vnet.ibm.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, Oleg Nesterov <oleg@...sign.ru>,
	Roland McGrath <roland@...hat.com>,
	Heiko Carstens <heicars2@...ux.vnet.ibm.com>,
	sameske@...ux.vnet.ibm.com,
	Martin Schwidefsky <schwidefsky@...ibm.com>,
	Ingo Molnar <mingo@...e.hu>, gregkh@...e.de,
	uml-devel <user-mode-linux-devel@...ts.sourceforge.net>,
	Cedric Le Goater <clg@...ibm.com>,
	Daniel Lezcano <dlezcano@...ibm.com>
Subject: Re: [PATCH 1/1] system call notification with self_ptrace

On Mon, 2008-09-08 at 14:02 +0200, Pierre Morel wrote:
> 
> +       if (is_self_ptracing(regs->gprs[2])) {
> +               if (!entryexit) {
> +                       struct siginfo info;
> +
> +                       memset(&info, 0, sizeof(struct siginfo));
> +                       info.si_signo = SIGSYS;
> +                       info.si_code = SYS_SYSCALL;
> +                       info.si_errno = regs->gprs[2];
> +                       info.si_addr = (void *)regs->orig_gpr2;
> +                       send_sig_info(SIGSYS, &info, current);
> +                       regs->gprs[2] = -1;
> +               }
> +               return;
> +       }

I see you didn't like my suggestions for consolidating some of these
repetitive code bits across all the architectures.  Did you give that a
a shot?  Would you like me to produce a patch on top of what you have
here before this gets merged into mm?

-- Dave

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