linux-kernel - Re: [patch 27/85] [PATCH 07/44] [CVE-2009-0029] System call wrapper infrastructure

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Date:	Thu, 15 Jan 2009 23:46:41 +0100
From:	Jiri Slaby <jirislaby@...il.com>
To:	Greg KH <gregkh@...e.de>
CC:	linux-kernel@...r.kernel.org, stable@...nel.org,
	Justin Forbes <jmforbes@...uxtx.org>,
	Zwane Mwaikambo <zwane@....linux.org.uk>,
	Theodore Ts'o <tytso@....edu>,
	Randy Dunlap <rdunlap@...otime.net>,
	Dave Jones <davej@...hat.com>,
	Chuck Wolber <chuckw@...ntumlinux.com>,
	Chris Wedgwood <reviews@...cw.f00f.org>,
	Michael Krufky <mkrufky@...uxtv.org>,
	Chuck Ebbert <cebbert@...hat.com>,
	Domenico Andreoli <cavokz@...il.com>, Willy Tarreau <w@....eu>,
	Rodrigo Rubira Branco <rbranco@...checkpoint.com>,
	Jake Edge <jake@....net>, Eugene Teo <eteo@...hat.com>,
	torvalds@...ux-foundation.org, akpm@...ux-foundation.org,
	alan@...rguk.ukuu.org.uk, Ralf Baechle <ralf@...ux-mips.org>,
	Martin Schwidefsky <schwidefsky@...ibm.com>,
	Heiko Carstens <heiko.carstens@...ibm.com>
Subject: Re: [patch 27/85] [PATCH 07/44] [CVE-2009-0029] System call wrapper
 infrastructure

On 01/15/2009 10:59 PM, Greg KH wrote:
> +
> +#ifdef CONFIG_HAVE_SYSCALL_WRAPPERS
> +
> +#define SYSCALL_DEFINE(name) static inline long SYSC_##name
> +#define SYSCALL_DEFINEx(x, name, ...)                                        \
> +     asmlinkage long sys_##name(__SC_DECL##x(__VA_ARGS__));          \
> +     static inline long SYSC_##name(__SC_DECL##x(__VA_ARGS__));      \

Hmm, we don't support at least gcc 3.4.6 anymore :/. It seems to be the same as in:
http://lkml.org/lkml/2007/12/6/385

It doesn't like inline prototypes.

> +     asmlinkage long SyS_##name(__SC_LONG##x(__VA_ARGS__))           \
> +     {                                                               \
> +             __SC_TEST##x(__VA_ARGS__);                              \
> +             return (long) SYSC_##name(__SC_CAST##x(__VA_ARGS__));   \
> +     }                                                               \
> +     SYSCALL_ALIAS(sys_##name, SyS_##name);                          \
> +     static inline long SYSC_##name(__SC_DECL##x(__VA_ARGS__))

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