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 * Weak module dependencies. See man modprobe.d for details.
178 * Example: MODULE_WEAKDEP("module-foo")
180 #define MODULE_WEAKDEP(_weakdep) MODULE_INFO(weakdep, _weakdep)
183 * MODULE_FILE is used for generating modules.builtin
184 * So, make it no-op when this is being built as a module
189 #define MODULE_FILE MODULE_INFO(file, KBUILD_MODFILE);
193 * The following license idents are currently accepted as indicating free
196 * "GPL" [GNU Public License v2]
197 * "GPL v2" [GNU Public License v2]
198 * "GPL and additional rights" [GNU Public License v2 rights and more]
199 * "Dual BSD/GPL" [GNU Public License v2
200 * or BSD license choice]
201 * "Dual MIT/GPL" [GNU Public License v2
202 * or MIT license choice]
203 * "Dual MPL/GPL" [GNU Public License v2
204 * or Mozilla license choice]
206 * The following other idents are available
208 * "Proprietary" [Non free products]
210 * Both "GPL v2" and "GPL" (the latter also in dual licensed strings) are
211 * merely stating that the module is licensed under the GPL v2, but are not
212 * telling whether "GPL v2 only" or "GPL v2 or later". The reason why there
213 * are two variants is a historic and failed attempt to convey more
214 * information in the MODULE_LICENSE string. For module loading the
215 * "only/or later" distinction is completely irrelevant and does neither
216 * replace the proper license identifiers in the corresponding source file
217 * nor amends them in any way. The sole purpose is to make the
218 * 'Proprietary' flagging work and to refuse to bind symbols which are
219 * exported with EXPORT_SYMBOL_GPL when a non free module is loaded.
221 * In the same way "BSD" is not a clear license information. It merely
222 * states, that the module is licensed under one of the compatible BSD
223 * license variants. The detailed and correct license information is again
224 * to be found in the corresponding source files.
226 * There are dual licensed components, but when running with Linux it is the
227 * GPL that is relevant so this is a non issue. Similarly LGPL linked with GPL
228 * is a GPL combined work.
230 * This exists for several reasons
231 * 1. So modinfo can show license info for users wanting to vet their setup
233 * 2. So the community can ignore bug reports including proprietary modules
234 * 3. So vendors can do likewise based on their own policies
236 #define MODULE_LICENSE(_license) MODULE_FILE MODULE_INFO(license, _license)
239 * Author(s), use "Name <email>" or just "Name", for multiple
240 * authors use multiple MODULE_AUTHOR() statements/lines.
242 #define MODULE_AUTHOR(_author) MODULE_INFO(author, _author)
244 /* What your module does. */
245 #define MODULE_DESCRIPTION(_description) MODULE_INFO(description, _description)
248 /* Creates an alias so file2alias.c can find device table. */
249 #define MODULE_DEVICE_TABLE(type, name) \
250 extern typeof(name) __mod_##type##__##name##_device_table \
251 __attribute__ ((unused, alias(__stringify(name))))
253 #define MODULE_DEVICE_TABLE(type, name)
256 /* Version of form [<epoch>:]<version>[-<extra-version>].
257 * Or for CVS/RCS ID version, everything but the number is stripped.
258 * <epoch>: A (small) unsigned integer which allows you to start versions
259 * anew. If not mentioned, it's zero. eg. "2:1.0" is after
262 * <version>: The <version> may contain only alphanumerics and the
263 * character `.'. Ordered by numeric sort for numeric parts,
264 * ascii sort for ascii parts (as per RPM or DEB algorithm).
266 * <extraversion>: Like <version>, but inserted for local
267 * customizations, eg "rh3" or "rusty1".
269 * Using this automatically adds a checksum of the .c files and the
270 * local headers in "srcversion".
273 #if defined(MODULE) || !defined(CONFIG_SYSFS)
274 #define MODULE_VERSION(_version) MODULE_INFO(version, _version)
276 #define MODULE_VERSION(_version) \
277 MODULE_INFO(version, _version); \
278 static struct module_version_attribute __modver_attr \
279 __used __section("__modver") \
280 __aligned(__alignof__(struct module_version_attribute)) \
287 .show = __modver_version_show, \
289 .module_name = KBUILD_MODNAME, \
290 .version = _version, \
294 /* Optional firmware file (or files) needed by the module
295 * format is simply firmware file name. Multiple firmware
296 * files require multiple MODULE_FIRMWARE() specifiers */
297 #define MODULE_FIRMWARE(_firmware) MODULE_INFO(firmware, _firmware)
299 #define MODULE_IMPORT_NS(ns) MODULE_INFO(import_ns, __stringify(ns))
301 struct notifier_block;
303 #ifdef CONFIG_MODULES
305 extern int modules_disabled; /* for sysctl */
306 /* Get/put a kernel symbol (calls must be symmetric) */
307 void *__symbol_get(const char *symbol);
308 void *__symbol_get_gpl(const char *symbol);
309 #define symbol_get(x) ((typeof(&x))(__symbol_get(__stringify(x))))
311 /* modules using other modules: kdb wants to see this. */
313 struct list_head source_list;
314 struct list_head target_list;
315 struct module *source, *target;
319 MODULE_STATE_LIVE, /* Normal state. */
320 MODULE_STATE_COMING, /* Full formed, running module_init. */
321 MODULE_STATE_GOING, /* Going away. */
322 MODULE_STATE_UNFORMED, /* Still setting it up. */
325 struct mod_tree_node {
327 struct latch_tree_node node;
343 #define mod_mem_type_is_init(type) \
344 ((type) == MOD_INIT_TEXT || \
345 (type) == MOD_INIT_DATA || \
346 (type) == MOD_INIT_RODATA)
348 #define mod_mem_type_is_core(type) (!mod_mem_type_is_init(type))
350 #define mod_mem_type_is_text(type) \
351 ((type) == MOD_TEXT || \
352 (type) == MOD_INIT_TEXT)
354 #define mod_mem_type_is_data(type) (!mod_mem_type_is_text(type))
356 #define mod_mem_type_is_core_data(type) \
357 (mod_mem_type_is_core(type) && \
358 mod_mem_type_is_data(type))
360 #define for_each_mod_mem_type(type) \
361 for (enum mod_mem_type (type) = 0; \
362 (type) < MOD_MEM_NUM_TYPES; (type)++)
364 #define for_class_mod_mem_type(type, class) \
365 for_each_mod_mem_type(type) \
366 if (mod_mem_type_is_##class(type))
368 struct module_memory {
372 #ifdef CONFIG_MODULES_TREE_LOOKUP
373 struct mod_tree_node mtn;
377 #ifdef CONFIG_MODULES_TREE_LOOKUP
378 /* Only touch one cacheline for common rbtree-for-core-layout case. */
379 #define __module_memory_align ____cacheline_aligned
381 #define __module_memory_align
384 struct mod_kallsyms {
386 unsigned int num_symtab;
391 #ifdef CONFIG_LIVEPATCH
393 * struct klp_modinfo - ELF information preserved from the livepatch module
396 * @sechdrs: Section header table
397 * @secstrings: String table for the section headers
398 * @symndx: The symbol table section index
409 enum module_state state;
411 /* Member of list of modules */
412 struct list_head list;
414 /* Unique handle for this module */
415 char name[MODULE_NAME_LEN];
417 #ifdef CONFIG_STACKTRACE_BUILD_ID
418 /* Module build ID */
419 unsigned char build_id[BUILD_ID_SIZE_MAX];
423 struct module_kobject mkobj;
424 struct module_attribute *modinfo_attrs;
426 const char *srcversion;
427 struct kobject *holders_dir;
429 /* Exported symbols */
430 const struct kernel_symbol *syms;
432 unsigned int num_syms;
434 #ifdef CONFIG_ARCH_USES_CFI_TRAPS
439 /* Kernel parameters. */
441 struct mutex param_lock;
443 struct kernel_param *kp;
446 /* GPL-only exported symbols. */
447 unsigned int num_gpl_syms;
448 const struct kernel_symbol *gpl_syms;
450 bool using_gplonly_symbols;
452 #ifdef CONFIG_MODULE_SIG
453 /* Signature was verified. */
457 bool async_probe_requested;
459 /* Exception table */
460 unsigned int num_exentries;
461 struct exception_table_entry *extable;
463 /* Startup function. */
466 struct module_memory mem[MOD_MEM_NUM_TYPES] __module_memory_align;
468 /* Arch-specific module values */
469 struct mod_arch_specific arch;
471 unsigned long taints; /* same bits as kernel:taint_flags */
473 #ifdef CONFIG_GENERIC_BUG
474 /* Support for BUG */
476 struct list_head bug_list;
477 struct bug_entry *bug_table;
480 #ifdef CONFIG_KALLSYMS
481 /* Protected by RCU and/or module_mutex: use rcu_dereference() */
482 struct mod_kallsyms __rcu *kallsyms;
483 struct mod_kallsyms core_kallsyms;
485 /* Section attributes */
486 struct module_sect_attrs *sect_attrs;
488 /* Notes attributes */
489 struct module_notes_attrs *notes_attrs;
492 /* The command line arguments (may be mangled). People like
493 keeping pointers to this stuff */
498 void __percpu *percpu;
499 unsigned int percpu_size;
501 void *noinstr_text_start;
502 unsigned int noinstr_text_size;
504 #ifdef CONFIG_TRACEPOINTS
505 unsigned int num_tracepoints;
506 tracepoint_ptr_t *tracepoints_ptrs;
508 #ifdef CONFIG_TREE_SRCU
509 unsigned int num_srcu_structs;
510 struct srcu_struct **srcu_struct_ptrs;
512 #ifdef CONFIG_BPF_EVENTS
513 unsigned int num_bpf_raw_events;
514 struct bpf_raw_event_map *bpf_raw_events;
516 #ifdef CONFIG_DEBUG_INFO_BTF_MODULES
517 unsigned int btf_data_size;
520 #ifdef CONFIG_JUMP_LABEL
521 struct jump_entry *jump_entries;
522 unsigned int num_jump_entries;
524 #ifdef CONFIG_TRACING
525 unsigned int num_trace_bprintk_fmt;
526 const char **trace_bprintk_fmt_start;
528 #ifdef CONFIG_EVENT_TRACING
529 struct trace_event_call **trace_events;
530 unsigned int num_trace_events;
531 struct trace_eval_map **trace_evals;
532 unsigned int num_trace_evals;
534 #ifdef CONFIG_FTRACE_MCOUNT_RECORD
535 unsigned int num_ftrace_callsites;
536 unsigned long *ftrace_callsites;
538 #ifdef CONFIG_KPROBES
539 void *kprobes_text_start;
540 unsigned int kprobes_text_size;
541 unsigned long *kprobe_blacklist;
542 unsigned int num_kprobe_blacklist;
544 #ifdef CONFIG_HAVE_STATIC_CALL_INLINE
545 int num_static_call_sites;
546 struct static_call_site *static_call_sites;
548 #if IS_ENABLED(CONFIG_KUNIT)
549 int num_kunit_init_suites;
550 struct kunit_suite **kunit_init_suites;
551 int num_kunit_suites;
552 struct kunit_suite **kunit_suites;
556 #ifdef CONFIG_LIVEPATCH
557 bool klp; /* Is this a livepatch module? */
560 /* ELF information */
561 struct klp_modinfo *klp_info;
564 #ifdef CONFIG_PRINTK_INDEX
565 unsigned int printk_index_size;
566 struct pi_entry **printk_index_start;
569 #ifdef CONFIG_MODULE_UNLOAD
570 /* What modules depend on me? */
571 struct list_head source_list;
572 /* What modules do I depend on? */
573 struct list_head target_list;
575 /* Destruction function. */
581 #ifdef CONFIG_CONSTRUCTORS
582 /* Constructor functions. */
584 unsigned int num_ctors;
587 #ifdef CONFIG_FUNCTION_ERROR_INJECTION
588 struct error_injection_entry *ei_funcs;
589 unsigned int num_ei_funcs;
591 #ifdef CONFIG_DYNAMIC_DEBUG_CORE
592 struct _ddebug_info dyndbg_info;
594 } ____cacheline_aligned __randomize_layout;
595 #ifndef MODULE_ARCH_INIT
596 #define MODULE_ARCH_INIT {}
599 #ifndef HAVE_ARCH_KALLSYMS_SYMBOL_VALUE
600 static inline unsigned long kallsyms_symbol_value(const Elf_Sym *sym)
602 return sym->st_value;
606 /* FIXME: It'd be nice to isolate modules during init, too, so they
607 aren't used before they (may) fail. But presently too much code
608 (IDE & SCSI) require entry into the module during init.*/
609 static inline bool module_is_live(struct module *mod)
611 return mod->state != MODULE_STATE_GOING;
614 static inline bool module_is_coming(struct module *mod)
616 return mod->state == MODULE_STATE_COMING;
619 struct module *__module_text_address(unsigned long addr);
620 struct module *__module_address(unsigned long addr);
621 bool is_module_address(unsigned long addr);
622 bool __is_module_percpu_address(unsigned long addr, unsigned long *can_addr);
623 bool is_module_percpu_address(unsigned long addr);
624 bool is_module_text_address(unsigned long addr);
626 static inline bool within_module_mem_type(unsigned long addr,
627 const struct module *mod,
628 enum mod_mem_type type)
630 unsigned long base, size;
632 base = (unsigned long)mod->mem[type].base;
633 size = mod->mem[type].size;
634 return addr - base < size;
637 static inline bool within_module_core(unsigned long addr,
638 const struct module *mod)
640 for_class_mod_mem_type(type, core) {
641 if (within_module_mem_type(addr, mod, type))
647 static inline bool within_module_init(unsigned long addr,
648 const struct module *mod)
650 for_class_mod_mem_type(type, init) {
651 if (within_module_mem_type(addr, mod, type))
657 static inline bool within_module(unsigned long addr, const struct module *mod)
659 return within_module_init(addr, mod) || within_module_core(addr, mod);
662 /* Search for module by name: must be in a RCU-sched critical section. */
663 struct module *find_module(const char *name);
665 extern void __noreturn __module_put_and_kthread_exit(struct module *mod,
667 #define module_put_and_kthread_exit(code) __module_put_and_kthread_exit(THIS_MODULE, code)
669 #ifdef CONFIG_MODULE_UNLOAD
670 int module_refcount(struct module *mod);
671 void __symbol_put(const char *symbol);
672 #define symbol_put(x) __symbol_put(__stringify(x))
673 void symbol_put_addr(void *addr);
675 /* Sometimes we know we already have a refcount, and it's easier not
676 to handle the error case (which only happens with rmmod --wait). */
677 extern void __module_get(struct module *module);
680 * try_module_get() - take module refcount unless module is being removed
681 * @module: the module we should check for
683 * Only try to get a module reference count if the module is not being removed.
684 * This call will fail if the module is in the process of being removed.
686 * Care must also be taken to ensure the module exists and is alive prior to
687 * usage of this call. This can be gauranteed through two means:
689 * 1) Direct protection: you know an earlier caller must have increased the
690 * module reference through __module_get(). This can typically be achieved
691 * by having another entity other than the module itself increment the
692 * module reference count.
694 * 2) Implied protection: there is an implied protection against module
695 * removal. An example of this is the implied protection used by kernfs /
696 * sysfs. The sysfs store / read file operations are guaranteed to exist
697 * through the use of kernfs's active reference (see kernfs_active()) and a
698 * sysfs / kernfs file removal cannot happen unless the same file is not
699 * active. Therefore, if a sysfs file is being read or written to the module
700 * which created it must still exist. It is therefore safe to use
701 * try_module_get() on module sysfs store / read ops.
703 * One of the real values to try_module_get() is the module_is_live() check
704 * which ensures that the caller of try_module_get() can yield to userspace
705 * module removal requests and gracefully fail if the module is on its way out.
707 * Returns true if the reference count was successfully incremented.
709 extern bool try_module_get(struct module *module);
712 * module_put() - release a reference count to a module
713 * @module: the module we should release a reference count for
715 * If you successfully bump a reference count to a module with try_module_get(),
716 * when you are finished you must call module_put() to release that reference
719 extern void module_put(struct module *module);
721 #else /*!CONFIG_MODULE_UNLOAD*/
722 static inline bool try_module_get(struct module *module)
724 return !module || module_is_live(module);
726 static inline void module_put(struct module *module)
729 static inline void __module_get(struct module *module)
732 #define symbol_put(x) do { } while (0)
733 #define symbol_put_addr(p) do { } while (0)
735 #endif /* CONFIG_MODULE_UNLOAD */
737 /* This is a #define so the string doesn't get put in every .o file */
738 #define module_name(mod) \
740 struct module *__mod = (mod); \
741 __mod ? __mod->name : "kernel"; \
744 /* Dereference module function descriptor */
745 void *dereference_module_function_descriptor(struct module *mod, void *ptr);
747 int register_module_notifier(struct notifier_block *nb);
748 int unregister_module_notifier(struct notifier_block *nb);
750 extern void print_modules(void);
752 static inline bool module_requested_async_probing(struct module *module)
754 return module && module->async_probe_requested;
757 static inline bool is_livepatch_module(struct module *mod)
759 #ifdef CONFIG_LIVEPATCH
766 void set_module_sig_enforced(void);
768 #else /* !CONFIG_MODULES... */
770 static inline struct module *__module_address(unsigned long addr)
775 static inline struct module *__module_text_address(unsigned long addr)
780 static inline bool is_module_address(unsigned long addr)
785 static inline bool is_module_percpu_address(unsigned long addr)
790 static inline bool __is_module_percpu_address(unsigned long addr, unsigned long *can_addr)
795 static inline bool is_module_text_address(unsigned long addr)
800 static inline bool within_module_core(unsigned long addr,
801 const struct module *mod)
806 static inline bool within_module_init(unsigned long addr,
807 const struct module *mod)
812 static inline bool within_module(unsigned long addr, const struct module *mod)
817 /* Get/put a kernel symbol (calls should be symmetric) */
818 #define symbol_get(x) ({ extern typeof(x) x __attribute__((weak,visibility("hidden"))); &(x); })
819 #define symbol_put(x) do { } while (0)
820 #define symbol_put_addr(x) do { } while (0)
822 static inline void __module_get(struct module *module)
826 static inline bool try_module_get(struct module *module)
831 static inline void module_put(struct module *module)
835 #define module_name(mod) "kernel"
837 static inline int register_module_notifier(struct notifier_block *nb)
839 /* no events will happen anyway, so this can always succeed */
843 static inline int unregister_module_notifier(struct notifier_block *nb)
848 #define module_put_and_kthread_exit(code) kthread_exit(code)
850 static inline void print_modules(void)
854 static inline bool module_requested_async_probing(struct module *module)
860 static inline void set_module_sig_enforced(void)
864 /* Dereference module function descriptor */
866 void *dereference_module_function_descriptor(struct module *mod, void *ptr)
871 static inline bool module_is_coming(struct module *mod)
875 #endif /* CONFIG_MODULES */
878 extern struct kset *module_kset;
879 extern const struct kobj_type module_ktype;
880 #endif /* CONFIG_SYSFS */
882 #define symbol_request(x) try_then_request_module(symbol_get(x), "symbol:" #x)
884 /* BELOW HERE ALL THESE ARE OBSOLETE AND WILL VANISH */
886 #define __MODULE_STRING(x) __stringify(x)
888 #ifdef CONFIG_GENERIC_BUG
889 void module_bug_finalize(const Elf_Ehdr *, const Elf_Shdr *,
891 void module_bug_cleanup(struct module *);
893 #else /* !CONFIG_GENERIC_BUG */
895 static inline void module_bug_finalize(const Elf_Ehdr *hdr,
896 const Elf_Shdr *sechdrs,
900 static inline void module_bug_cleanup(struct module *mod) {}
901 #endif /* CONFIG_GENERIC_BUG */
903 #ifdef CONFIG_MITIGATION_RETPOLINE
904 extern bool retpoline_module_ok(bool has_retpoline);
906 static inline bool retpoline_module_ok(bool has_retpoline)
912 #ifdef CONFIG_MODULE_SIG
913 bool is_module_sig_enforced(void);
915 static inline bool module_sig_ok(struct module *module)
917 return module->sig_ok;
919 #else /* !CONFIG_MODULE_SIG */
920 static inline bool is_module_sig_enforced(void)
925 static inline bool module_sig_ok(struct module *module)
929 #endif /* CONFIG_MODULE_SIG */
931 #if defined(CONFIG_MODULES) && defined(CONFIG_KALLSYMS)
932 int module_kallsyms_on_each_symbol(const char *modname,
933 int (*fn)(void *, const char *, unsigned long),
936 /* For kallsyms to ask for address resolution. namebuf should be at
937 * least KSYM_NAME_LEN long: a pointer to namebuf is returned if
938 * found, otherwise NULL.
940 const char *module_address_lookup(unsigned long addr,
941 unsigned long *symbolsize,
942 unsigned long *offset,
943 char **modname, const unsigned char **modbuildid,
945 int lookup_module_symbol_name(unsigned long addr, char *symname);
946 int lookup_module_symbol_attrs(unsigned long addr,
948 unsigned long *offset,
952 /* Returns 0 and fills in value, defined and namebuf, or -ERANGE if
953 * symnum out of range.
955 int module_get_kallsym(unsigned int symnum, unsigned long *value, char *type,
956 char *name, char *module_name, int *exported);
958 /* Look for this name: can be of form module:name. */
959 unsigned long module_kallsyms_lookup_name(const char *name);
961 unsigned long find_kallsyms_symbol_value(struct module *mod, const char *name);
963 #else /* CONFIG_MODULES && CONFIG_KALLSYMS */
965 static inline int module_kallsyms_on_each_symbol(const char *modname,
966 int (*fn)(void *, const char *, unsigned long),
972 /* For kallsyms to ask for address resolution. NULL means not found. */
973 static inline const char *module_address_lookup(unsigned long addr,
974 unsigned long *symbolsize,
975 unsigned long *offset,
977 const unsigned char **modbuildid,
983 static inline int lookup_module_symbol_name(unsigned long addr, char *symname)
988 static inline int module_get_kallsym(unsigned int symnum, unsigned long *value,
989 char *type, char *name,
990 char *module_name, int *exported)
995 static inline unsigned long module_kallsyms_lookup_name(const char *name)
1000 static inline unsigned long find_kallsyms_symbol_value(struct module *mod,
1006 #endif /* CONFIG_MODULES && CONFIG_KALLSYMS */
1008 #endif /* _LINUX_MODULE_H */