1 /* SPDX-License-Identifier: GPL-2.0-only */
3 * Dynamic loading of modules into the kernel.
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/dynamic_debug.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 ___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 ___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;
337 #define mod_mem_type_is_init(type) \
338 ((type) == MOD_INIT_TEXT || \
339 (type) == MOD_INIT_DATA || \
340 (type) == MOD_INIT_RODATA)
342 #define mod_mem_type_is_core(type) (!mod_mem_type_is_init(type))
344 #define mod_mem_type_is_text(type) \
345 ((type) == MOD_TEXT || \
346 (type) == MOD_INIT_TEXT)
348 #define mod_mem_type_is_data(type) (!mod_mem_type_is_text(type))
350 #define mod_mem_type_is_core_data(type) \
351 (mod_mem_type_is_core(type) && \
352 mod_mem_type_is_data(type))
354 #define for_each_mod_mem_type(type) \
355 for (enum mod_mem_type (type) = 0; \
356 (type) < MOD_MEM_NUM_TYPES; (type)++)
358 #define for_class_mod_mem_type(type, class) \
359 for_each_mod_mem_type(type) \
360 if (mod_mem_type_is_##class(type))
362 struct module_memory {
366 #ifdef CONFIG_MODULES_TREE_LOOKUP
367 struct mod_tree_node mtn;
371 #ifdef CONFIG_MODULES_TREE_LOOKUP
372 /* Only touch one cacheline for common rbtree-for-core-layout case. */
373 #define __module_memory_align ____cacheline_aligned
375 #define __module_memory_align
378 struct mod_kallsyms {
380 unsigned int num_symtab;
385 #ifdef CONFIG_LIVEPATCH
387 * struct klp_modinfo - ELF information preserved from the livepatch module
390 * @sechdrs: Section header table
391 * @secstrings: String table for the section headers
392 * @symndx: The symbol table section index
403 enum module_state state;
405 /* Member of list of modules */
406 struct list_head list;
408 /* Unique handle for this module */
409 char name[MODULE_NAME_LEN];
411 #ifdef CONFIG_STACKTRACE_BUILD_ID
412 /* Module build ID */
413 unsigned char build_id[BUILD_ID_SIZE_MAX];
417 struct module_kobject mkobj;
418 struct module_attribute *modinfo_attrs;
420 const char *srcversion;
421 struct kobject *holders_dir;
423 /* Exported symbols */
424 const struct kernel_symbol *syms;
426 unsigned int num_syms;
428 #ifdef CONFIG_ARCH_USES_CFI_TRAPS
433 /* Kernel parameters. */
435 struct mutex param_lock;
437 struct kernel_param *kp;
440 /* GPL-only exported symbols. */
441 unsigned int num_gpl_syms;
442 const struct kernel_symbol *gpl_syms;
444 bool using_gplonly_symbols;
446 #ifdef CONFIG_MODULE_SIG
447 /* Signature was verified. */
451 bool async_probe_requested;
453 /* Exception table */
454 unsigned int num_exentries;
455 struct exception_table_entry *extable;
457 /* Startup function. */
460 struct module_memory mem[MOD_MEM_NUM_TYPES] __module_memory_align;
462 /* Arch-specific module values */
463 struct mod_arch_specific arch;
465 unsigned long taints; /* same bits as kernel:taint_flags */
467 #ifdef CONFIG_GENERIC_BUG
468 /* Support for BUG */
470 struct list_head bug_list;
471 struct bug_entry *bug_table;
474 #ifdef CONFIG_KALLSYMS
475 /* Protected by RCU and/or module_mutex: use rcu_dereference() */
476 struct mod_kallsyms __rcu *kallsyms;
477 struct mod_kallsyms core_kallsyms;
479 /* Section attributes */
480 struct module_sect_attrs *sect_attrs;
482 /* Notes attributes */
483 struct module_notes_attrs *notes_attrs;
486 /* The command line arguments (may be mangled). People like
487 keeping pointers to this stuff */
492 void __percpu *percpu;
493 unsigned int percpu_size;
495 void *noinstr_text_start;
496 unsigned int noinstr_text_size;
498 #ifdef CONFIG_TRACEPOINTS
499 unsigned int num_tracepoints;
500 tracepoint_ptr_t *tracepoints_ptrs;
502 #ifdef CONFIG_TREE_SRCU
503 unsigned int num_srcu_structs;
504 struct srcu_struct **srcu_struct_ptrs;
506 #ifdef CONFIG_BPF_EVENTS
507 unsigned int num_bpf_raw_events;
508 struct bpf_raw_event_map *bpf_raw_events;
510 #ifdef CONFIG_DEBUG_INFO_BTF_MODULES
511 unsigned int btf_data_size;
514 #ifdef CONFIG_JUMP_LABEL
515 struct jump_entry *jump_entries;
516 unsigned int num_jump_entries;
518 #ifdef CONFIG_TRACING
519 unsigned int num_trace_bprintk_fmt;
520 const char **trace_bprintk_fmt_start;
522 #ifdef CONFIG_EVENT_TRACING
523 struct trace_event_call **trace_events;
524 unsigned int num_trace_events;
525 struct trace_eval_map **trace_evals;
526 unsigned int num_trace_evals;
528 #ifdef CONFIG_FTRACE_MCOUNT_RECORD
529 unsigned int num_ftrace_callsites;
530 unsigned long *ftrace_callsites;
532 #ifdef CONFIG_KPROBES
533 void *kprobes_text_start;
534 unsigned int kprobes_text_size;
535 unsigned long *kprobe_blacklist;
536 unsigned int num_kprobe_blacklist;
538 #ifdef CONFIG_HAVE_STATIC_CALL_INLINE
539 int num_static_call_sites;
540 struct static_call_site *static_call_sites;
542 #if IS_ENABLED(CONFIG_KUNIT)
543 int num_kunit_init_suites;
544 struct kunit_suite **kunit_init_suites;
545 int num_kunit_suites;
546 struct kunit_suite **kunit_suites;
550 #ifdef CONFIG_LIVEPATCH
551 bool klp; /* Is this a livepatch module? */
554 /* ELF information */
555 struct klp_modinfo *klp_info;
558 #ifdef CONFIG_PRINTK_INDEX
559 unsigned int printk_index_size;
560 struct pi_entry **printk_index_start;
563 #ifdef CONFIG_MODULE_UNLOAD
564 /* What modules depend on me? */
565 struct list_head source_list;
566 /* What modules do I depend on? */
567 struct list_head target_list;
569 /* Destruction function. */
575 #ifdef CONFIG_CONSTRUCTORS
576 /* Constructor functions. */
578 unsigned int num_ctors;
581 #ifdef CONFIG_FUNCTION_ERROR_INJECTION
582 struct error_injection_entry *ei_funcs;
583 unsigned int num_ei_funcs;
585 #ifdef CONFIG_DYNAMIC_DEBUG_CORE
586 struct _ddebug_info dyndbg_info;
588 } ____cacheline_aligned __randomize_layout;
589 #ifndef MODULE_ARCH_INIT
590 #define MODULE_ARCH_INIT {}
593 #ifndef HAVE_ARCH_KALLSYMS_SYMBOL_VALUE
594 static inline unsigned long kallsyms_symbol_value(const Elf_Sym *sym)
596 return sym->st_value;
600 /* FIXME: It'd be nice to isolate modules during init, too, so they
601 aren't used before they (may) fail. But presently too much code
602 (IDE & SCSI) require entry into the module during init.*/
603 static inline bool module_is_live(struct module *mod)
605 return mod->state != MODULE_STATE_GOING;
608 struct module *__module_text_address(unsigned long addr);
609 struct module *__module_address(unsigned long addr);
610 bool is_module_address(unsigned long addr);
611 bool __is_module_percpu_address(unsigned long addr, unsigned long *can_addr);
612 bool is_module_percpu_address(unsigned long addr);
613 bool is_module_text_address(unsigned long addr);
615 static inline bool within_module_mem_type(unsigned long addr,
616 const struct module *mod,
617 enum mod_mem_type type)
619 unsigned long base, size;
621 base = (unsigned long)mod->mem[type].base;
622 size = mod->mem[type].size;
623 return addr - base < size;
626 static inline bool within_module_core(unsigned long addr,
627 const struct module *mod)
629 for_class_mod_mem_type(type, core) {
630 if (within_module_mem_type(addr, mod, type))
636 static inline bool within_module_init(unsigned long addr,
637 const struct module *mod)
639 for_class_mod_mem_type(type, init) {
640 if (within_module_mem_type(addr, mod, type))
646 static inline bool within_module(unsigned long addr, const struct module *mod)
648 return within_module_init(addr, mod) || within_module_core(addr, mod);
651 /* Search for module by name: must be in a RCU-sched critical section. */
652 struct module *find_module(const char *name);
654 extern void __noreturn __module_put_and_kthread_exit(struct module *mod,
656 #define module_put_and_kthread_exit(code) __module_put_and_kthread_exit(THIS_MODULE, code)
658 #ifdef CONFIG_MODULE_UNLOAD
659 int module_refcount(struct module *mod);
660 void __symbol_put(const char *symbol);
661 #define symbol_put(x) __symbol_put(__stringify(x))
662 void symbol_put_addr(void *addr);
664 /* Sometimes we know we already have a refcount, and it's easier not
665 to handle the error case (which only happens with rmmod --wait). */
666 extern void __module_get(struct module *module);
669 * try_module_get() - take module refcount unless module is being removed
670 * @module: the module we should check for
672 * Only try to get a module reference count if the module is not being removed.
673 * This call will fail if the module is in the process of being removed.
675 * Care must also be taken to ensure the module exists and is alive prior to
676 * usage of this call. This can be gauranteed through two means:
678 * 1) Direct protection: you know an earlier caller must have increased the
679 * module reference through __module_get(). This can typically be achieved
680 * by having another entity other than the module itself increment the
681 * module reference count.
683 * 2) Implied protection: there is an implied protection against module
684 * removal. An example of this is the implied protection used by kernfs /
685 * sysfs. The sysfs store / read file operations are guaranteed to exist
686 * through the use of kernfs's active reference (see kernfs_active()) and a
687 * sysfs / kernfs file removal cannot happen unless the same file is not
688 * active. Therefore, if a sysfs file is being read or written to the module
689 * which created it must still exist. It is therefore safe to use
690 * try_module_get() on module sysfs store / read ops.
692 * One of the real values to try_module_get() is the module_is_live() check
693 * which ensures that the caller of try_module_get() can yield to userspace
694 * module removal requests and gracefully fail if the module is on its way out.
696 * Returns true if the reference count was successfully incremented.
698 extern bool try_module_get(struct module *module);
701 * module_put() - release a reference count to a module
702 * @module: the module we should release a reference count for
704 * If you successfully bump a reference count to a module with try_module_get(),
705 * when you are finished you must call module_put() to release that reference
708 extern void module_put(struct module *module);
710 #else /*!CONFIG_MODULE_UNLOAD*/
711 static inline bool try_module_get(struct module *module)
713 return !module || module_is_live(module);
715 static inline void module_put(struct module *module)
718 static inline void __module_get(struct module *module)
721 #define symbol_put(x) do { } while (0)
722 #define symbol_put_addr(p) do { } while (0)
724 #endif /* CONFIG_MODULE_UNLOAD */
726 /* This is a #define so the string doesn't get put in every .o file */
727 #define module_name(mod) \
729 struct module *__mod = (mod); \
730 __mod ? __mod->name : "kernel"; \
733 /* Dereference module function descriptor */
734 void *dereference_module_function_descriptor(struct module *mod, void *ptr);
736 int register_module_notifier(struct notifier_block *nb);
737 int unregister_module_notifier(struct notifier_block *nb);
739 extern void print_modules(void);
741 static inline bool module_requested_async_probing(struct module *module)
743 return module && module->async_probe_requested;
746 static inline bool is_livepatch_module(struct module *mod)
748 #ifdef CONFIG_LIVEPATCH
755 void set_module_sig_enforced(void);
757 #else /* !CONFIG_MODULES... */
759 static inline struct module *__module_address(unsigned long addr)
764 static inline struct module *__module_text_address(unsigned long addr)
769 static inline bool is_module_address(unsigned long addr)
774 static inline bool is_module_percpu_address(unsigned long addr)
779 static inline bool __is_module_percpu_address(unsigned long addr, unsigned long *can_addr)
784 static inline bool is_module_text_address(unsigned long addr)
789 static inline bool within_module_core(unsigned long addr,
790 const struct module *mod)
795 static inline bool within_module_init(unsigned long addr,
796 const struct module *mod)
801 static inline bool within_module(unsigned long addr, const struct module *mod)
806 /* Get/put a kernel symbol (calls should be symmetric) */
807 #define symbol_get(x) ({ extern typeof(x) x __attribute__((weak,visibility("hidden"))); &(x); })
808 #define symbol_put(x) do { } while (0)
809 #define symbol_put_addr(x) do { } while (0)
811 static inline void __module_get(struct module *module)
815 static inline bool try_module_get(struct module *module)
820 static inline void module_put(struct module *module)
824 #define module_name(mod) "kernel"
826 static inline int register_module_notifier(struct notifier_block *nb)
828 /* no events will happen anyway, so this can always succeed */
832 static inline int unregister_module_notifier(struct notifier_block *nb)
837 #define module_put_and_kthread_exit(code) kthread_exit(code)
839 static inline void print_modules(void)
843 static inline bool module_requested_async_probing(struct module *module)
849 static inline void set_module_sig_enforced(void)
853 /* Dereference module function descriptor */
855 void *dereference_module_function_descriptor(struct module *mod, void *ptr)
860 #endif /* CONFIG_MODULES */
863 extern struct kset *module_kset;
864 extern const struct kobj_type module_ktype;
865 #endif /* CONFIG_SYSFS */
867 #define symbol_request(x) try_then_request_module(symbol_get(x), "symbol:" #x)
869 /* BELOW HERE ALL THESE ARE OBSOLETE AND WILL VANISH */
871 #define __MODULE_STRING(x) __stringify(x)
873 #ifdef CONFIG_GENERIC_BUG
874 void module_bug_finalize(const Elf_Ehdr *, const Elf_Shdr *,
876 void module_bug_cleanup(struct module *);
878 #else /* !CONFIG_GENERIC_BUG */
880 static inline void module_bug_finalize(const Elf_Ehdr *hdr,
881 const Elf_Shdr *sechdrs,
885 static inline void module_bug_cleanup(struct module *mod) {}
886 #endif /* CONFIG_GENERIC_BUG */
888 #ifdef CONFIG_RETPOLINE
889 extern bool retpoline_module_ok(bool has_retpoline);
891 static inline bool retpoline_module_ok(bool has_retpoline)
897 #ifdef CONFIG_MODULE_SIG
898 bool is_module_sig_enforced(void);
900 static inline bool module_sig_ok(struct module *module)
902 return module->sig_ok;
904 #else /* !CONFIG_MODULE_SIG */
905 static inline bool is_module_sig_enforced(void)
910 static inline bool module_sig_ok(struct module *module)
914 #endif /* CONFIG_MODULE_SIG */
916 #if defined(CONFIG_MODULES) && defined(CONFIG_KALLSYMS)
917 int module_kallsyms_on_each_symbol(const char *modname,
918 int (*fn)(void *, const char *, unsigned long),
921 /* For kallsyms to ask for address resolution. namebuf should be at
922 * least KSYM_NAME_LEN long: a pointer to namebuf is returned if
923 * found, otherwise NULL.
925 const char *module_address_lookup(unsigned long addr,
926 unsigned long *symbolsize,
927 unsigned long *offset,
928 char **modname, const unsigned char **modbuildid,
930 int lookup_module_symbol_name(unsigned long addr, char *symname);
931 int lookup_module_symbol_attrs(unsigned long addr,
933 unsigned long *offset,
937 /* Returns 0 and fills in value, defined and namebuf, or -ERANGE if
938 * symnum out of range.
940 int module_get_kallsym(unsigned int symnum, unsigned long *value, char *type,
941 char *name, char *module_name, int *exported);
943 /* Look for this name: can be of form module:name. */
944 unsigned long module_kallsyms_lookup_name(const char *name);
946 unsigned long find_kallsyms_symbol_value(struct module *mod, const char *name);
948 #else /* CONFIG_MODULES && CONFIG_KALLSYMS */
950 static inline int module_kallsyms_on_each_symbol(const char *modname,
951 int (*fn)(void *, const char *, unsigned long),
957 /* For kallsyms to ask for address resolution. NULL means not found. */
958 static inline const char *module_address_lookup(unsigned long addr,
959 unsigned long *symbolsize,
960 unsigned long *offset,
962 const unsigned char **modbuildid,
968 static inline int lookup_module_symbol_name(unsigned long addr, char *symname)
973 static inline int module_get_kallsym(unsigned int symnum, unsigned long *value,
974 char *type, char *name,
975 char *module_name, int *exported)
980 static inline unsigned long module_kallsyms_lookup_name(const char *name)
985 static inline unsigned long find_kallsyms_symbol_value(struct module *mod,
991 #endif /* CONFIG_MODULES && CONFIG_KALLSYMS */
993 #endif /* _LINUX_MODULE_H */