1 /* SPDX-License-Identifier: GPL-2.0-only */
3 * Dynamic loading of modules into the kernel.
5 * Rewritten by Richard Henderson <rth@tamu.edu> Dec 1996
6 * Rewritten again by Rusty Russell, 2002
9 #ifndef _LINUX_MODULE_H
10 #define _LINUX_MODULE_H
12 #include <linux/list.h>
13 #include <linux/stat.h>
14 #include <linux/buildid.h>
15 #include <linux/compiler.h>
16 #include <linux/cache.h>
17 #include <linux/kmod.h>
18 #include <linux/init.h>
19 #include <linux/elf.h>
20 #include <linux/stringify.h>
21 #include <linux/kobject.h>
22 #include <linux/moduleparam.h>
23 #include <linux/jump_label.h>
24 #include <linux/export.h>
25 #include <linux/rbtree_latch.h>
26 #include <linux/error-injection.h>
27 #include <linux/tracepoint-defs.h>
28 #include <linux/srcu.h>
29 #include <linux/static_call_types.h>
30 #include <linux/cfi.h>
32 #include <linux/percpu.h>
33 #include <asm/module.h>
35 #define MODULE_NAME_LEN MAX_PARAM_PREFIX_LEN
37 struct modversion_info {
39 char name[MODULE_NAME_LEN];
43 struct exception_table_entry;
45 struct module_kobject {
48 struct kobject *drivers_dir;
49 struct module_param_attrs *mp;
50 struct completion *kobj_completion;
53 struct module_attribute {
54 struct attribute attr;
55 ssize_t (*show)(struct module_attribute *, struct module_kobject *,
57 ssize_t (*store)(struct module_attribute *, struct module_kobject *,
58 const char *, size_t count);
59 void (*setup)(struct module *, const char *);
60 int (*test)(struct module *);
61 void (*free)(struct module *);
64 struct module_version_attribute {
65 struct module_attribute mattr;
66 const char *module_name;
70 extern ssize_t __modver_version_show(struct module_attribute *,
71 struct module_kobject *, char *);
73 extern struct module_attribute module_uevent;
75 /* These are either module local, or the kernel's dummy ones. */
76 extern int init_module(void);
77 extern void cleanup_module(void);
81 * module_init() - driver initialization entry point
82 * @x: function to be run at kernel boot time or module insertion
84 * module_init() will either be called during do_initcalls() (if
85 * builtin) or at module insertion time (if a module). There can only
88 #define module_init(x) __initcall(x);
91 * module_exit() - driver exit entry point
92 * @x: function to be run when driver is removed
94 * module_exit() will wrap the driver clean-up code
95 * with cleanup_module() when used with rmmod when
96 * the driver is a module. If the driver is statically
97 * compiled into the kernel, module_exit() has no effect.
98 * There can only be one per module.
100 #define module_exit(x) __exitcall(x);
105 * In most cases loadable modules do not need custom
106 * initcall levels. There are still some valid cases where
107 * a driver may be needed early if built in, and does not
108 * matter when built as a loadable module. Like bus
109 * snooping debug drivers.
111 #define early_initcall(fn) module_init(fn)
112 #define core_initcall(fn) module_init(fn)
113 #define core_initcall_sync(fn) module_init(fn)
114 #define postcore_initcall(fn) module_init(fn)
115 #define postcore_initcall_sync(fn) module_init(fn)
116 #define arch_initcall(fn) module_init(fn)
117 #define subsys_initcall(fn) module_init(fn)
118 #define subsys_initcall_sync(fn) module_init(fn)
119 #define fs_initcall(fn) module_init(fn)
120 #define fs_initcall_sync(fn) module_init(fn)
121 #define rootfs_initcall(fn) module_init(fn)
122 #define device_initcall(fn) module_init(fn)
123 #define device_initcall_sync(fn) module_init(fn)
124 #define late_initcall(fn) module_init(fn)
125 #define late_initcall_sync(fn) module_init(fn)
127 #define console_initcall(fn) module_init(fn)
129 /* Each module must use one module_init(). */
130 #define module_init(initfn) \
131 static inline initcall_t __maybe_unused __inittest(void) \
133 int init_module(void) __copy(initfn) \
134 __attribute__((alias(#initfn))); \
135 __CFI_ADDRESSABLE(init_module, __initdata);
137 /* This is only required if you want to be unloadable. */
138 #define module_exit(exitfn) \
139 static inline exitcall_t __maybe_unused __exittest(void) \
141 void cleanup_module(void) __copy(exitfn) \
142 __attribute__((alias(#exitfn))); \
143 __CFI_ADDRESSABLE(cleanup_module, __exitdata);
147 /* This means "can be init if no module support, otherwise module load
149 #ifdef CONFIG_MODULES
150 #define __init_or_module
151 #define __initdata_or_module
152 #define __initconst_or_module
153 #define __INIT_OR_MODULE .text
154 #define __INITDATA_OR_MODULE .data
155 #define __INITRODATA_OR_MODULE .section ".rodata","a",%progbits
157 #define __init_or_module __init
158 #define __initdata_or_module __initdata
159 #define __initconst_or_module __initconst
160 #define __INIT_OR_MODULE __INIT
161 #define __INITDATA_OR_MODULE __INITDATA
162 #define __INITRODATA_OR_MODULE __INITRODATA
163 #endif /*CONFIG_MODULES*/
165 /* Generic info of form tag = "info" */
166 #define MODULE_INFO(tag, info) __MODULE_INFO(tag, tag, info)
168 /* For userspace: you can also call me... */
169 #define MODULE_ALIAS(_alias) MODULE_INFO(alias, _alias)
171 /* Soft module dependencies. See man modprobe.d for details.
172 * Example: MODULE_SOFTDEP("pre: module-foo module-bar post: module-baz")
174 #define MODULE_SOFTDEP(_softdep) MODULE_INFO(softdep, _softdep)
177 * MODULE_FILE is used for generating modules.builtin
178 * So, make it no-op when this is being built as a module
183 #define MODULE_FILE MODULE_INFO(file, KBUILD_MODFILE);
187 * The following license idents are currently accepted as indicating free
190 * "GPL" [GNU Public License v2]
191 * "GPL v2" [GNU Public License v2]
192 * "GPL and additional rights" [GNU Public License v2 rights and more]
193 * "Dual BSD/GPL" [GNU Public License v2
194 * or BSD license choice]
195 * "Dual MIT/GPL" [GNU Public License v2
196 * or MIT license choice]
197 * "Dual MPL/GPL" [GNU Public License v2
198 * or Mozilla license choice]
200 * The following other idents are available
202 * "Proprietary" [Non free products]
204 * Both "GPL v2" and "GPL" (the latter also in dual licensed strings) are
205 * merely stating that the module is licensed under the GPL v2, but are not
206 * telling whether "GPL v2 only" or "GPL v2 or later". The reason why there
207 * are two variants is a historic and failed attempt to convey more
208 * information in the MODULE_LICENSE string. For module loading the
209 * "only/or later" distinction is completely irrelevant and does neither
210 * replace the proper license identifiers in the corresponding source file
211 * nor amends them in any way. The sole purpose is to make the
212 * 'Proprietary' flagging work and to refuse to bind symbols which are
213 * exported with EXPORT_SYMBOL_GPL when a non free module is loaded.
215 * In the same way "BSD" is not a clear license information. It merely
216 * states, that the module is licensed under one of the compatible BSD
217 * license variants. The detailed and correct license information is again
218 * to be found in the corresponding source files.
220 * There are dual licensed components, but when running with Linux it is the
221 * GPL that is relevant so this is a non issue. Similarly LGPL linked with GPL
222 * is a GPL combined work.
224 * This exists for several reasons
225 * 1. So modinfo can show license info for users wanting to vet their setup
227 * 2. So the community can ignore bug reports including proprietary modules
228 * 3. So vendors can do likewise based on their own policies
230 #define MODULE_LICENSE(_license) MODULE_FILE MODULE_INFO(license, _license)
233 * Author(s), use "Name <email>" or just "Name", for multiple
234 * authors use multiple MODULE_AUTHOR() statements/lines.
236 #define MODULE_AUTHOR(_author) MODULE_INFO(author, _author)
238 /* What your module does. */
239 #define MODULE_DESCRIPTION(_description) MODULE_INFO(description, _description)
242 /* Creates an alias so file2alias.c can find device table. */
243 #define MODULE_DEVICE_TABLE(type, name) \
244 extern typeof(name) __mod_##type##__##name##_device_table \
245 __attribute__ ((unused, alias(__stringify(name))))
247 #define MODULE_DEVICE_TABLE(type, name)
250 /* Version of form [<epoch>:]<version>[-<extra-version>].
251 * Or for CVS/RCS ID version, everything but the number is stripped.
252 * <epoch>: A (small) unsigned integer which allows you to start versions
253 * anew. If not mentioned, it's zero. eg. "2:1.0" is after
256 * <version>: The <version> may contain only alphanumerics and the
257 * character `.'. Ordered by numeric sort for numeric parts,
258 * ascii sort for ascii parts (as per RPM or DEB algorithm).
260 * <extraversion>: Like <version>, but inserted for local
261 * customizations, eg "rh3" or "rusty1".
263 * Using this automatically adds a checksum of the .c files and the
264 * local headers in "srcversion".
267 #if defined(MODULE) || !defined(CONFIG_SYSFS)
268 #define MODULE_VERSION(_version) MODULE_INFO(version, _version)
270 #define MODULE_VERSION(_version) \
271 MODULE_INFO(version, _version); \
272 static struct module_version_attribute __modver_attr \
273 __used __section("__modver") \
274 __aligned(__alignof__(struct module_version_attribute)) \
281 .show = __modver_version_show, \
283 .module_name = KBUILD_MODNAME, \
284 .version = _version, \
288 /* Optional firmware file (or files) needed by the module
289 * format is simply firmware file name. Multiple firmware
290 * files require multiple MODULE_FIRMWARE() specifiers */
291 #define MODULE_FIRMWARE(_firmware) MODULE_INFO(firmware, _firmware)
293 #define MODULE_IMPORT_NS(ns) MODULE_INFO(import_ns, __stringify(ns))
295 struct notifier_block;
297 #ifdef CONFIG_MODULES
299 extern int modules_disabled; /* for sysctl */
300 /* Get/put a kernel symbol (calls must be symmetric) */
301 void *__symbol_get(const char *symbol);
302 void *__symbol_get_gpl(const char *symbol);
303 #define symbol_get(x) ((typeof(&x))(__symbol_get(__stringify(x))))
305 /* modules using other modules: kdb wants to see this. */
307 struct list_head source_list;
308 struct list_head target_list;
309 struct module *source, *target;
313 MODULE_STATE_LIVE, /* Normal state. */
314 MODULE_STATE_COMING, /* Full formed, running module_init. */
315 MODULE_STATE_GOING, /* Going away. */
316 MODULE_STATE_UNFORMED, /* Still setting it up. */
319 struct mod_tree_node {
321 struct latch_tree_node node;
324 struct module_layout {
325 /* The actual code + data. */
329 /* The size of the executable code. */
330 unsigned int text_size;
331 /* Size of RO section of the module (text+rodata) */
332 unsigned int ro_size;
333 /* Size of RO after init section */
334 unsigned int ro_after_init_size;
336 #ifdef CONFIG_MODULES_TREE_LOOKUP
337 struct mod_tree_node mtn;
341 #ifdef CONFIG_MODULES_TREE_LOOKUP
342 /* Only touch one cacheline for common rbtree-for-core-layout case. */
343 #define __module_layout_align ____cacheline_aligned
345 #define __module_layout_align
348 struct mod_kallsyms {
350 unsigned int num_symtab;
355 #ifdef CONFIG_LIVEPATCH
365 enum module_state state;
367 /* Member of list of modules */
368 struct list_head list;
370 /* Unique handle for this module */
371 char name[MODULE_NAME_LEN];
373 #ifdef CONFIG_STACKTRACE_BUILD_ID
374 /* Module build ID */
375 unsigned char build_id[BUILD_ID_SIZE_MAX];
379 struct module_kobject mkobj;
380 struct module_attribute *modinfo_attrs;
382 const char *srcversion;
383 struct kobject *holders_dir;
385 /* Exported symbols */
386 const struct kernel_symbol *syms;
388 unsigned int num_syms;
390 #ifdef CONFIG_CFI_CLANG
391 cfi_check_fn cfi_check;
394 /* Kernel parameters. */
396 struct mutex param_lock;
398 struct kernel_param *kp;
401 /* GPL-only exported symbols. */
402 unsigned int num_gpl_syms;
403 const struct kernel_symbol *gpl_syms;
405 bool using_gplonly_symbols;
407 #ifdef CONFIG_MODULE_SIG
408 /* Signature was verified. */
412 bool async_probe_requested;
414 /* Exception table */
415 unsigned int num_exentries;
416 struct exception_table_entry *extable;
418 /* Startup function. */
421 /* Core layout: rbtree is accessed frequently, so keep together. */
422 struct module_layout core_layout __module_layout_align;
423 struct module_layout init_layout;
424 #ifdef CONFIG_ARCH_WANTS_MODULES_DATA_IN_VMALLOC
425 struct module_layout data_layout;
428 /* Arch-specific module values */
429 struct mod_arch_specific arch;
431 unsigned long taints; /* same bits as kernel:taint_flags */
433 #ifdef CONFIG_GENERIC_BUG
434 /* Support for BUG */
436 struct list_head bug_list;
437 struct bug_entry *bug_table;
440 #ifdef CONFIG_KALLSYMS
441 /* Protected by RCU and/or module_mutex: use rcu_dereference() */
442 struct mod_kallsyms __rcu *kallsyms;
443 struct mod_kallsyms core_kallsyms;
445 /* Section attributes */
446 struct module_sect_attrs *sect_attrs;
448 /* Notes attributes */
449 struct module_notes_attrs *notes_attrs;
452 /* The command line arguments (may be mangled). People like
453 keeping pointers to this stuff */
458 void __percpu *percpu;
459 unsigned int percpu_size;
461 void *noinstr_text_start;
462 unsigned int noinstr_text_size;
464 #ifdef CONFIG_TRACEPOINTS
465 unsigned int num_tracepoints;
466 tracepoint_ptr_t *tracepoints_ptrs;
468 #ifdef CONFIG_TREE_SRCU
469 unsigned int num_srcu_structs;
470 struct srcu_struct **srcu_struct_ptrs;
472 #ifdef CONFIG_BPF_EVENTS
473 unsigned int num_bpf_raw_events;
474 struct bpf_raw_event_map *bpf_raw_events;
476 #ifdef CONFIG_DEBUG_INFO_BTF_MODULES
477 unsigned int btf_data_size;
480 #ifdef CONFIG_JUMP_LABEL
481 struct jump_entry *jump_entries;
482 unsigned int num_jump_entries;
484 #ifdef CONFIG_TRACING
485 unsigned int num_trace_bprintk_fmt;
486 const char **trace_bprintk_fmt_start;
488 #ifdef CONFIG_EVENT_TRACING
489 struct trace_event_call **trace_events;
490 unsigned int num_trace_events;
491 struct trace_eval_map **trace_evals;
492 unsigned int num_trace_evals;
494 #ifdef CONFIG_FTRACE_MCOUNT_RECORD
495 unsigned int num_ftrace_callsites;
496 unsigned long *ftrace_callsites;
498 #ifdef CONFIG_KPROBES
499 void *kprobes_text_start;
500 unsigned int kprobes_text_size;
501 unsigned long *kprobe_blacklist;
502 unsigned int num_kprobe_blacklist;
504 #ifdef CONFIG_HAVE_STATIC_CALL_INLINE
505 int num_static_call_sites;
506 struct static_call_site *static_call_sites;
508 #if IS_ENABLED(CONFIG_KUNIT)
509 int num_kunit_suites;
510 struct kunit_suite **kunit_suites;
514 #ifdef CONFIG_LIVEPATCH
515 bool klp; /* Is this a livepatch module? */
518 /* Elf information */
519 struct klp_modinfo *klp_info;
522 #ifdef CONFIG_PRINTK_INDEX
523 unsigned int printk_index_size;
524 struct pi_entry **printk_index_start;
527 #ifdef CONFIG_MODULE_UNLOAD
528 /* What modules depend on me? */
529 struct list_head source_list;
530 /* What modules do I depend on? */
531 struct list_head target_list;
533 /* Destruction function. */
539 #ifdef CONFIG_CONSTRUCTORS
540 /* Constructor functions. */
542 unsigned int num_ctors;
545 #ifdef CONFIG_FUNCTION_ERROR_INJECTION
546 struct error_injection_entry *ei_funcs;
547 unsigned int num_ei_funcs;
549 } ____cacheline_aligned __randomize_layout;
550 #ifndef MODULE_ARCH_INIT
551 #define MODULE_ARCH_INIT {}
554 #ifndef HAVE_ARCH_KALLSYMS_SYMBOL_VALUE
555 static inline unsigned long kallsyms_symbol_value(const Elf_Sym *sym)
557 return sym->st_value;
561 /* FIXME: It'd be nice to isolate modules during init, too, so they
562 aren't used before they (may) fail. But presently too much code
563 (IDE & SCSI) require entry into the module during init.*/
564 static inline bool module_is_live(struct module *mod)
566 return mod->state != MODULE_STATE_GOING;
569 struct module *__module_text_address(unsigned long addr);
570 struct module *__module_address(unsigned long addr);
571 bool is_module_address(unsigned long addr);
572 bool __is_module_percpu_address(unsigned long addr, unsigned long *can_addr);
573 bool is_module_percpu_address(unsigned long addr);
574 bool is_module_text_address(unsigned long addr);
576 static inline bool within_module_core(unsigned long addr,
577 const struct module *mod)
579 #ifdef CONFIG_ARCH_WANTS_MODULES_DATA_IN_VMALLOC
580 if ((unsigned long)mod->data_layout.base <= addr &&
581 addr < (unsigned long)mod->data_layout.base + mod->data_layout.size)
584 return (unsigned long)mod->core_layout.base <= addr &&
585 addr < (unsigned long)mod->core_layout.base + mod->core_layout.size;
588 static inline bool within_module_init(unsigned long addr,
589 const struct module *mod)
591 return (unsigned long)mod->init_layout.base <= addr &&
592 addr < (unsigned long)mod->init_layout.base + mod->init_layout.size;
595 static inline bool within_module(unsigned long addr, const struct module *mod)
597 return within_module_init(addr, mod) || within_module_core(addr, mod);
600 /* Search for module by name: must be in a RCU-sched critical section. */
601 struct module *find_module(const char *name);
603 /* Returns 0 and fills in value, defined and namebuf, or -ERANGE if
604 symnum out of range. */
605 int module_get_kallsym(unsigned int symnum, unsigned long *value, char *type,
606 char *name, char *module_name, int *exported);
608 /* Look for this name: can be of form module:name. */
609 unsigned long module_kallsyms_lookup_name(const char *name);
611 extern void __noreturn __module_put_and_kthread_exit(struct module *mod,
613 #define module_put_and_kthread_exit(code) __module_put_and_kthread_exit(THIS_MODULE, code)
615 #ifdef CONFIG_MODULE_UNLOAD
616 int module_refcount(struct module *mod);
617 void __symbol_put(const char *symbol);
618 #define symbol_put(x) __symbol_put(__stringify(x))
619 void symbol_put_addr(void *addr);
621 /* Sometimes we know we already have a refcount, and it's easier not
622 to handle the error case (which only happens with rmmod --wait). */
623 extern void __module_get(struct module *module);
625 /* This is the Right Way to get a module: if it fails, it's being removed,
626 * so pretend it's not there. */
627 extern bool try_module_get(struct module *module);
629 extern void module_put(struct module *module);
631 #else /*!CONFIG_MODULE_UNLOAD*/
632 static inline bool try_module_get(struct module *module)
634 return !module || module_is_live(module);
636 static inline void module_put(struct module *module)
639 static inline void __module_get(struct module *module)
642 #define symbol_put(x) do { } while (0)
643 #define symbol_put_addr(p) do { } while (0)
645 #endif /* CONFIG_MODULE_UNLOAD */
647 /* This is a #define so the string doesn't get put in every .o file */
648 #define module_name(mod) \
650 struct module *__mod = (mod); \
651 __mod ? __mod->name : "kernel"; \
654 /* Dereference module function descriptor */
655 void *dereference_module_function_descriptor(struct module *mod, void *ptr);
657 /* For kallsyms to ask for address resolution. namebuf should be at
658 * least KSYM_NAME_LEN long: a pointer to namebuf is returned if
659 * found, otherwise NULL. */
660 const char *module_address_lookup(unsigned long addr,
661 unsigned long *symbolsize,
662 unsigned long *offset,
663 char **modname, const unsigned char **modbuildid,
665 int lookup_module_symbol_name(unsigned long addr, char *symname);
666 int lookup_module_symbol_attrs(unsigned long addr, unsigned long *size, unsigned long *offset, char *modname, char *name);
668 int register_module_notifier(struct notifier_block *nb);
669 int unregister_module_notifier(struct notifier_block *nb);
671 extern void print_modules(void);
673 static inline bool module_requested_async_probing(struct module *module)
675 return module && module->async_probe_requested;
678 static inline bool is_livepatch_module(struct module *mod)
680 #ifdef CONFIG_LIVEPATCH
687 void set_module_sig_enforced(void);
689 #else /* !CONFIG_MODULES... */
691 static inline struct module *__module_address(unsigned long addr)
696 static inline struct module *__module_text_address(unsigned long addr)
701 static inline bool is_module_address(unsigned long addr)
706 static inline bool is_module_percpu_address(unsigned long addr)
711 static inline bool __is_module_percpu_address(unsigned long addr, unsigned long *can_addr)
716 static inline bool is_module_text_address(unsigned long addr)
721 static inline bool within_module_core(unsigned long addr,
722 const struct module *mod)
727 static inline bool within_module_init(unsigned long addr,
728 const struct module *mod)
733 static inline bool within_module(unsigned long addr, const struct module *mod)
738 /* Get/put a kernel symbol (calls should be symmetric) */
739 #define symbol_get(x) ({ extern typeof(x) x __attribute__((weak,visibility("hidden"))); &(x); })
740 #define symbol_put(x) do { } while (0)
741 #define symbol_put_addr(x) do { } while (0)
743 static inline void __module_get(struct module *module)
747 static inline bool try_module_get(struct module *module)
752 static inline void module_put(struct module *module)
756 #define module_name(mod) "kernel"
758 /* For kallsyms to ask for address resolution. NULL means not found. */
759 static inline const char *module_address_lookup(unsigned long addr,
760 unsigned long *symbolsize,
761 unsigned long *offset,
763 const unsigned char **modbuildid,
769 static inline int lookup_module_symbol_name(unsigned long addr, char *symname)
774 static inline int lookup_module_symbol_attrs(unsigned long addr, unsigned long *size, unsigned long *offset, char *modname, char *name)
779 static inline int module_get_kallsym(unsigned int symnum, unsigned long *value,
780 char *type, char *name,
781 char *module_name, int *exported)
786 static inline unsigned long module_kallsyms_lookup_name(const char *name)
791 static inline int register_module_notifier(struct notifier_block *nb)
793 /* no events will happen anyway, so this can always succeed */
797 static inline int unregister_module_notifier(struct notifier_block *nb)
802 #define module_put_and_kthread_exit(code) kthread_exit(code)
804 static inline void print_modules(void)
808 static inline bool module_requested_async_probing(struct module *module)
814 static inline void set_module_sig_enforced(void)
818 /* Dereference module function descriptor */
820 void *dereference_module_function_descriptor(struct module *mod, void *ptr)
825 #endif /* CONFIG_MODULES */
828 extern struct kset *module_kset;
829 extern struct kobj_type module_ktype;
830 extern int module_sysfs_initialized;
831 #endif /* CONFIG_SYSFS */
833 #define symbol_request(x) try_then_request_module(symbol_get(x), "symbol:" #x)
835 /* BELOW HERE ALL THESE ARE OBSOLETE AND WILL VANISH */
837 #define __MODULE_STRING(x) __stringify(x)
839 #ifdef CONFIG_GENERIC_BUG
840 void module_bug_finalize(const Elf_Ehdr *, const Elf_Shdr *,
842 void module_bug_cleanup(struct module *);
844 #else /* !CONFIG_GENERIC_BUG */
846 static inline void module_bug_finalize(const Elf_Ehdr *hdr,
847 const Elf_Shdr *sechdrs,
851 static inline void module_bug_cleanup(struct module *mod) {}
852 #endif /* CONFIG_GENERIC_BUG */
854 #ifdef CONFIG_RETPOLINE
855 extern bool retpoline_module_ok(bool has_retpoline);
857 static inline bool retpoline_module_ok(bool has_retpoline)
863 #ifdef CONFIG_MODULE_SIG
864 bool is_module_sig_enforced(void);
866 static inline bool module_sig_ok(struct module *module)
868 return module->sig_ok;
870 #else /* !CONFIG_MODULE_SIG */
871 static inline bool is_module_sig_enforced(void)
876 static inline bool module_sig_ok(struct module *module)
880 #endif /* CONFIG_MODULE_SIG */
882 int module_kallsyms_on_each_symbol(int (*fn)(void *, const char *,
883 struct module *, unsigned long),
886 #endif /* _LINUX_MODULE_H */