Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756928Ab3IECNa (ORCPT ); Wed, 4 Sep 2013 22:13:30 -0400 Received: from smtp.nue.novell.com ([195.135.221.5]:54543 "EHLO smtp.nue.novell.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753124Ab3IECN3 (ORCPT ); Wed, 4 Sep 2013 22:13:29 -0400 Subject: Re: [PATCH V3 01/11] Add secure_modules() call From: joeyli To: Matthew Garrett Cc: linux-kernel@vger.kernel.org, linux-efi@vger.kernel.org, keescook@chromium.org, hpa@zytor.com In-Reply-To: <1378252218-18798-2-git-send-email-matthew.garrett@nebula.com> References: <1378252218-18798-1-git-send-email-matthew.garrett@nebula.com> <1378252218-18798-2-git-send-email-matthew.garrett@nebula.com> Content-Type: text/plain; charset="UTF-8" Date: Thu, 05 Sep 2013 10:14:18 +0800 Message-ID: <1378347258.6380.77.camel@linux-s257.site> Mime-Version: 1.0 X-Mailer: Evolution 2.28.2 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1887 Lines: 64 於 二，2013-09-03 於 19:50 -0400，Matthew Garrett 提到： > Provide a single call to allow kernel code to determine whether the system > has been configured to either disable module loading entirely or to load > only modules signed with a trusted key. > > Signed-off-by: Matthew Garrett Tested-by: Lee, Chun-Yi > --- > include/linux/module.h | 7 +++++++ > kernel/module.c | 10 ++++++++++ > 2 files changed, 17 insertions(+) > > diff --git a/include/linux/module.h b/include/linux/module.h > index 46f1ea0..0c266b2 100644 > --- a/include/linux/module.h > +++ b/include/linux/module.h > @@ -509,6 +509,8 @@ int unregister_module_notifier(struct notifier_block * nb); > > extern void print_modules(void); > > +extern bool secure_modules(void); > + > #else /* !CONFIG_MODULES... */ > > /* Given an address, look for it in the exception tables. */ > @@ -619,6 +621,11 @@ static inline int unregister_module_notifier(struct notifier_block * nb) > static inline void print_modules(void) > { > } > + > +static inline bool secure_modules(void) > +{ > + return false; > +} > #endif /* CONFIG_MODULES */ > > #ifdef CONFIG_SYSFS > diff --git a/kernel/module.c b/kernel/module.c > index 2069158..0e94acf 100644 > --- a/kernel/module.c > +++ b/kernel/module.c > @@ -3852,3 +3852,13 @@ void module_layout(struct module *mod, > } > EXPORT_SYMBOL(module_layout); > #endif > + > +bool secure_modules(void) > +{ > +#ifdef CONFIG_MODULE_SIG > + return (sig_enforce || modules_disabled); > +#else > + return modules_disabled; > +#endif > +} > +EXPORT_SYMBOL(secure_modules); -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/