Messages in this thread Patch in this message | | | From | Matthew Garrett <> | Subject | [PATCH V3 01/11] Add secure_modules() call | Date | Tue, 3 Sep 2013 19:50:08 -0400 |
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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 <matthew.garrett@nebula.com> --- 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); -- 1.8.3.1
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