diff options
Diffstat (limited to 'kernel/module/internal.h')
| -rw-r--r-- | kernel/module/internal.h | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/kernel/module/internal.h b/kernel/module/internal.h index f1682e3677be..a6895bb5598a 100644 --- a/kernel/module/internal.h +++ b/kernel/module/internal.h @@ -20,6 +20,17 @@ /* Maximum number of characters written by module_flags() */ #define MODULE_FLAGS_BUF_SIZE (TAINT_FLAGS_COUNT + 4) +/* + * Modules' sections will be aligned on page boundaries + * to ensure complete separation of code and data, but + * only when CONFIG_ARCH_HAS_STRICT_MODULE_RWX=y + */ +#ifdef CONFIG_ARCH_HAS_STRICT_MODULE_RWX +# define debug_align(X) PAGE_ALIGN(X) +#else +# define debug_align(X) (X) +#endif + extern struct mutex module_mutex; extern struct list_head modules; @@ -126,3 +137,24 @@ static inline struct module *mod_find(unsigned long addr) return NULL; } #endif /* CONFIG_MODULES_TREE_LOOKUP */ + +#ifdef CONFIG_ARCH_HAS_STRICT_MODULE_RWX +void frob_text(const struct module_layout *layout, int (*set_memory)(unsigned long start, + int num_pages)); +#endif /* CONFIG_ARCH_HAS_STRICT_MODULE_RWX */ + +#ifdef CONFIG_STRICT_MODULE_RWX +void module_enable_ro(const struct module *mod, bool after_init); +void module_enable_nx(const struct module *mod); +int module_enforce_rwx_sections(Elf_Ehdr *hdr, Elf_Shdr *sechdrs, + char *secstrings, struct module *mod); + +#else /* !CONFIG_STRICT_MODULE_RWX */ +static inline void module_enable_nx(const struct module *mod) { } +static inline void module_enable_ro(const struct module *mod, bool after_init) {} +static inline int module_enforce_rwx_sections(Elf_Ehdr *hdr, Elf_Shdr *sechdrs, + char *secstrings, struct module *mod) +{ + return 0; +} +#endif /* CONFIG_STRICT_MODULE_RWX */ |