diff options
Diffstat (limited to 'include/linux/module.h')
| -rw-r--r-- | include/linux/module.h | 119 |
1 files changed, 76 insertions, 43 deletions
diff --git a/include/linux/module.h b/include/linux/module.h index a98e188cf37b..d80c3ea57472 100644 --- a/include/linux/module.h +++ b/include/linux/module.h @@ -14,6 +14,7 @@ #include <linux/buildid.h> #include <linux/compiler.h> #include <linux/cache.h> +#include <linux/cleanup.h> #include <linux/kmod.h> #include <linux/init.h> #include <linux/elf.h> @@ -32,7 +33,7 @@ #include <linux/percpu.h> #include <asm/module.h> -#define MODULE_NAME_LEN MAX_PARAM_PREFIX_LEN +#define MODULE_NAME_LEN __MODULE_NAME_LEN struct modversion_info { unsigned long crc; @@ -52,9 +53,9 @@ struct module_kobject { struct module_attribute { struct attribute attr; - ssize_t (*show)(struct module_attribute *, struct module_kobject *, + ssize_t (*show)(const struct module_attribute *, struct module_kobject *, char *); - ssize_t (*store)(struct module_attribute *, struct module_kobject *, + ssize_t (*store)(const struct module_attribute *, struct module_kobject *, const char *, size_t count); void (*setup)(struct module *, const char *); int (*test)(struct module *); @@ -67,10 +68,10 @@ struct module_version_attribute { const char *version; }; -extern ssize_t __modver_version_show(struct module_attribute *, +extern ssize_t __modver_version_show(const struct module_attribute *, struct module_kobject *, char *); -extern struct module_attribute module_uevent; +extern const struct module_attribute module_uevent; /* These are either module local, or the kernel's dummy ones. */ extern int init_module(void); @@ -162,8 +163,7 @@ extern void cleanup_module(void); #define __INITRODATA_OR_MODULE __INITRODATA #endif /*CONFIG_MODULES*/ -/* Generic info of form tag = "info" */ -#define MODULE_INFO(tag, info) __MODULE_INFO(tag, tag, info) +struct module_kobject *lookup_or_create_module_kobject(const char *name); /* For userspace: you can also call me... */ #define MODULE_ALIAS(_alias) MODULE_INFO(alias, _alias) @@ -174,6 +174,12 @@ extern void cleanup_module(void); #define MODULE_SOFTDEP(_softdep) MODULE_INFO(softdep, _softdep) /* + * Weak module dependencies. See man modprobe.d for details. + * Example: MODULE_WEAKDEP("module-foo") + */ +#define MODULE_WEAKDEP(_weakdep) MODULE_INFO(weakdep, _weakdep) + +/* * MODULE_FILE is used for generating modules.builtin * So, make it no-op when this is being built as a module */ @@ -238,14 +244,23 @@ extern void cleanup_module(void); /* What your module does. */ #define MODULE_DESCRIPTION(_description) MODULE_INFO(description, _description) -#ifdef MODULE +/* + * Format: __mod_device_table__kmod_<modname>__<type>__<name> + * Parts of the string `__kmod_` and `__` are used as delimiters when parsing + * a symbol in file2alias.c + */ +#define __mod_device_table(type, name) \ + __PASTE(__mod_device_table__, \ + __PASTE(kmod_, \ + __PASTE(__KBUILD_MODNAME, \ + __PASTE(__, \ + __PASTE(type, \ + __PASTE(__, name)))))) + /* Creates an alias so file2alias.c can find device table. */ #define MODULE_DEVICE_TABLE(type, name) \ -extern typeof(name) __mod_##type##__##name##_device_table \ - __attribute__ ((unused, alias(__stringify(name)))) -#else /* !MODULE */ -#define MODULE_DEVICE_TABLE(type, name) -#endif +static typeof(name) __mod_device_table(type, name) \ + __attribute__ ((used, alias(__stringify(name)))) /* Version of form [<epoch>:]<version>[-<extra-version>]. * Or for CVS/RCS ID version, everything but the number is stripped. @@ -269,7 +284,7 @@ extern typeof(name) __mod_##type##__##name##_device_table \ #else #define MODULE_VERSION(_version) \ MODULE_INFO(version, _version); \ - static struct module_version_attribute __modver_attr \ + static const struct module_version_attribute __modver_attr \ __used __section("__modver") \ __aligned(__alignof__(struct module_version_attribute)) \ = { \ @@ -290,25 +305,10 @@ extern typeof(name) __mod_##type##__##name##_device_table \ * files require multiple MODULE_FIRMWARE() specifiers */ #define MODULE_FIRMWARE(_firmware) MODULE_INFO(firmware, _firmware) -#define MODULE_IMPORT_NS(ns) MODULE_INFO(import_ns, __stringify(ns)) +#define MODULE_IMPORT_NS(ns) MODULE_INFO(import_ns, ns) struct notifier_block; -#ifdef CONFIG_MODULES - -extern int modules_disabled; /* for sysctl */ -/* Get/put a kernel symbol (calls must be symmetric) */ -void *__symbol_get(const char *symbol); -void *__symbol_get_gpl(const char *symbol); -#define symbol_get(x) ((typeof(&x))(__symbol_get(__stringify(x)))) - -/* modules using other modules: kdb wants to see this. */ -struct module_use { - struct list_head source_list; - struct list_head target_list; - struct module *source, *target; -}; - enum module_state { MODULE_STATE_LIVE, /* Normal state. */ MODULE_STATE_COMING, /* Full formed, running module_init. */ @@ -361,6 +361,7 @@ enum mod_mem_type { struct module_memory { void *base; + bool is_rox; unsigned int size; #ifdef CONFIG_MODULES_TREE_LOOKUP @@ -422,7 +423,7 @@ struct module { /* Exported symbols */ const struct kernel_symbol *syms; - const s32 *crcs; + const u32 *crcs; unsigned int num_syms; #ifdef CONFIG_ARCH_USES_CFI_TRAPS @@ -440,7 +441,7 @@ struct module { /* GPL-only exported symbols. */ unsigned int num_gpl_syms; const struct kernel_symbol *gpl_syms; - const s32 *gpl_crcs; + const u32 *gpl_crcs; bool using_gplonly_symbols; #ifdef CONFIG_MODULE_SIG @@ -509,7 +510,9 @@ struct module { #endif #ifdef CONFIG_DEBUG_INFO_BTF_MODULES unsigned int btf_data_size; + unsigned int btf_base_data_size; void *btf_data; + void *btf_base_data; #endif #ifdef CONFIG_JUMP_LABEL struct jump_entry *jump_entries; @@ -525,7 +528,7 @@ struct module { struct trace_eval_map **trace_evals; unsigned int num_trace_evals; #endif -#ifdef CONFIG_FTRACE_MCOUNT_RECORD +#ifdef CONFIG_DYNAMIC_FTRACE unsigned int num_ftrace_callsites; unsigned long *ftrace_callsites; #endif @@ -540,6 +543,8 @@ struct module { struct static_call_site *static_call_sites; #endif #if IS_ENABLED(CONFIG_KUNIT) + int num_kunit_init_suites; + struct kunit_suite **kunit_init_suites; int num_kunit_suites; struct kunit_suite **kunit_suites; #endif @@ -588,6 +593,16 @@ struct module { #define MODULE_ARCH_INIT {} #endif +#ifdef CONFIG_MODULES + +/* Get/put a kernel symbol (calls must be symmetric) */ +void *__symbol_get(const char *symbol); +void *__symbol_get_gpl(const char *symbol); +#define symbol_get(x) ({ \ + static const char __notrim[] \ + __used __section(".no_trim_symbol") = __stringify(x); \ + (typeof(&x))(__symbol_get(__stringify(x))); }) + #ifndef HAVE_ARCH_KALLSYMS_SYMBOL_VALUE static inline unsigned long kallsyms_symbol_value(const Elf_Sym *sym) { @@ -603,6 +618,11 @@ static inline bool module_is_live(struct module *mod) return mod->state != MODULE_STATE_GOING; } +static inline bool module_is_coming(struct module *mod) +{ + return mod->state == MODULE_STATE_COMING; +} + struct module *__module_text_address(unsigned long addr); struct module *__module_address(unsigned long addr); bool is_module_address(unsigned long addr); @@ -646,7 +666,7 @@ static inline bool within_module(unsigned long addr, const struct module *mod) return within_module_init(addr, mod) || within_module_core(addr, mod); } -/* Search for module by name: must be in a RCU-sched critical section. */ +/* Search for module by name: must be in a RCU critical section. */ struct module *find_module(const char *name); extern void __noreturn __module_put_and_kthread_exit(struct module *mod, @@ -668,7 +688,7 @@ extern void __module_get(struct module *module); * @module: the module we should check for * * Only try to get a module reference count if the module is not being removed. - * This call will fail if the module is already being removed. + * This call will fail if the module is in the process of being removed. * * Care must also be taken to ensure the module exists and is alive prior to * usage of this call. This can be gauranteed through two means: @@ -752,6 +772,8 @@ static inline bool is_livepatch_module(struct module *mod) void set_module_sig_enforced(void); +void module_for_each_mod(int(*func)(struct module *mod, void *data), void *data); + #else /* !CONFIG_MODULES... */ static inline struct module *__module_address(unsigned long addr) @@ -855,6 +877,14 @@ void *dereference_module_function_descriptor(struct module *mod, void *ptr) return ptr; } +static inline bool module_is_coming(struct module *mod) +{ + return false; +} + +static inline void module_for_each_mod(int(*func)(struct module *mod, void *data), void *data) +{ +} #endif /* CONFIG_MODULES */ #ifdef CONFIG_SYSFS @@ -883,7 +913,7 @@ static inline void module_bug_finalize(const Elf_Ehdr *hdr, static inline void module_bug_cleanup(struct module *mod) {} #endif /* CONFIG_GENERIC_BUG */ -#ifdef CONFIG_RETPOLINE +#ifdef CONFIG_MITIGATION_RETPOLINE extern bool retpoline_module_ok(bool has_retpoline); #else static inline bool retpoline_module_ok(bool has_retpoline) @@ -920,11 +950,11 @@ int module_kallsyms_on_each_symbol(const char *modname, * least KSYM_NAME_LEN long: a pointer to namebuf is returned if * found, otherwise NULL. */ -const char *module_address_lookup(unsigned long addr, - unsigned long *symbolsize, - unsigned long *offset, - char **modname, const unsigned char **modbuildid, - char *namebuf); +int module_address_lookup(unsigned long addr, + unsigned long *symbolsize, + unsigned long *offset, + char **modname, const unsigned char **modbuildid, + char *namebuf); int lookup_module_symbol_name(unsigned long addr, char *symname); int lookup_module_symbol_attrs(unsigned long addr, unsigned long *size, @@ -953,14 +983,14 @@ static inline int module_kallsyms_on_each_symbol(const char *modname, } /* For kallsyms to ask for address resolution. NULL means not found. */ -static inline const char *module_address_lookup(unsigned long addr, +static inline int module_address_lookup(unsigned long addr, unsigned long *symbolsize, unsigned long *offset, char **modname, const unsigned char **modbuildid, char *namebuf) { - return NULL; + return 0; } static inline int lookup_module_symbol_name(unsigned long addr, char *symname) @@ -988,4 +1018,7 @@ static inline unsigned long find_kallsyms_symbol_value(struct module *mod, #endif /* CONFIG_MODULES && CONFIG_KALLSYMS */ +/* Define __free(module_put) macro for struct module *. */ +DEFINE_FREE(module_put, struct module *, if (_T) module_put(_T)) + #endif /* _LINUX_MODULE_H */ |