From mboxrd@z Thu Jan 1 00:00:00 1970 From: Matthew Garrett Subject: [PATCH V2 01/10] Add secure_modules() call Date: Mon, 19 Aug 2013 13:26:02 -0400 Message-ID: <1376933171-9854-2-git-send-email-matthew.garrett@nebula.com> References: <1376933171-9854-1-git-send-email-matthew.garrett@nebula.com> Return-path: In-Reply-To: <1376933171-9854-1-git-send-email-matthew.garrett@nebula.com> Sender: linux-kernel-owner@vger.kernel.org To: linux-kernel@vger.kernel.org Cc: linux-efi@vger.kernel.org, jwboyer@redhat.com, keescook@chromium.org, Matthew Garrett List-Id: linux-efi@vger.kernel.org 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 --- include/linux/module.h | 7 +++++++ kernel/module.c | 9 +++++++++ 2 files changed, 16 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..801021e 100644 --- a/kernel/module.c +++ b/kernel/module.c @@ -3852,3 +3852,12 @@ 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 +} -- 1.8.3.1