1 #ifndef _LINUX_MODULE_H
2 #define _LINUX_MODULE_H
3 /*
4 * Dynamic loading of modules into the kernel.
5 *
6 * Rewritten by Richard Henderson <rth@tamu.edu> Dec 1996
7 * Rewritten again by Rusty Russell, 2002
8 */
9 #include <linux/list.h>
10 #include <linux/stat.h>
11 #include <linux/compiler.h>
12 #include <linux/cache.h>
13 #include <linux/kmod.h>
14 #include <linux/init.h>
15 #include <linux/elf.h>
16 #include <linux/stringify.h>
17 #include <linux/kobject.h>
18 #include <linux/moduleparam.h>
19 #include <linux/jump_label.h>
20 #include <linux/export.h>
21 #include <linux/rbtree_latch.h>
22
23 #include <linux/percpu.h>
24 #include <asm/module.h>
25
26 /* In stripped ARM and x86-64 modules, ~ is surprisingly rare. */
27 #define MODULE_SIG_STRING "~Module signature appended~\n"
28
29 /* Not Yet Implemented */
30 #define MODULE_SUPPORTED_DEVICE(name)
31
32 #define MODULE_NAME_LEN MAX_PARAM_PREFIX_LEN
33
34 struct modversion_info {
35 unsigned long crc;
36 char name[MODULE_NAME_LEN];
37 };
38
39 struct module;
40 struct exception_table_entry;
41
42 struct module_kobject {
43 struct kobject kobj;
44 struct module *mod;
45 struct kobject *drivers_dir;
46 struct module_param_attrs *mp;
47 struct completion *kobj_completion;
48 } __randomize_layout;
49
50 struct module_attribute {
51 struct attribute attr;
52 ssize_t (*show)(struct module_attribute *, struct module_kobject *,
53 char *);
54 ssize_t (*store)(struct module_attribute *, struct module_kobject *,
55 const char *, size_t count);
56 void (*setup)(struct module *, const char *);
57 int (*test)(struct module *);
58 void (*free)(struct module *);
59 };
60
61 struct module_version_attribute {
62 struct module_attribute mattr;
63 const char *module_name;
64 const char *version;
65 } __attribute__ ((__aligned__(sizeof(void *))));
66
67 extern ssize_t __modver_version_show(struct module_attribute *,
68 struct module_kobject *, char *);
69
70 extern struct module_attribute module_uevent;
71
72 /* These are either module local, or the kernel's dummy ones. */
73 extern int init_module(void);
74 extern void cleanup_module(void);
75
76 #ifndef MODULE
77 /**
78 * module_init() - driver initialization entry point
79 * @x: function to be run at kernel boot time or module insertion
80 *
81 * module_init() will either be called during do_initcalls() (if
82 * builtin) or at module insertion time (if a module). There can only
83 * be one per module.
84 */
85 #define module_init(x) __initcall(x);
86
87 /**
88 * module_exit() - driver exit entry point
89 * @x: function to be run when driver is removed
90 *
91 * module_exit() will wrap the driver clean-up code
92 * with cleanup_module() when used with rmmod when
93 * the driver is a module. If the driver is statically
94 * compiled into the kernel, module_exit() has no effect.
95 * There can only be one per module.
96 */
97 #define module_exit(x) __exitcall(x);
98
99 #else /* MODULE */
100
101 /*
102 * In most cases loadable modules do not need custom
103 * initcall levels. There are still some valid cases where
104 * a driver may be needed early if built in, and does not
105 * matter when built as a loadable module. Like bus
106 * snooping debug drivers.
107 */
108 #define early_initcall(fn) module_init(fn)
109 #define core_initcall(fn) module_init(fn)
110 #define core_initcall_sync(fn) module_init(fn)
111 #define postcore_initcall(fn) module_init(fn)
112 #define postcore_initcall_sync(fn) module_init(fn)
113 #define arch_initcall(fn) module_init(fn)
114 #define subsys_initcall(fn) module_init(fn)
115 #define subsys_initcall_sync(fn) module_init(fn)
116 #define fs_initcall(fn) module_init(fn)
117 #define fs_initcall_sync(fn) module_init(fn)
118 #define rootfs_initcall(fn) module_init(fn)
119 #define device_initcall(fn) module_init(fn)
120 #define device_initcall_sync(fn) module_init(fn)
121 #define late_initcall(fn) module_init(fn)
122 #define late_initcall_sync(fn) module_init(fn)
123
124 #define console_initcall(fn) module_init(fn)
125 #define security_initcall(fn) module_init(fn)
126
127 /* Each module must use one module_init(). */
128 #define module_init(initfn) \
129 static inline initcall_t __maybe_unused __inittest(void) \
130 { return initfn; } \
131 int init_module(void) __attribute__((alias(#initfn)));
132
133 /* This is only required if you want to be unloadable. */
134 #define module_exit(exitfn) \
135 static inline exitcall_t __maybe_unused __exittest(void) \
136 { return exitfn; } \
137 void cleanup_module(void) __attribute__((alias(#exitfn)));
138
139 #endif
140
141 /* This means "can be init if no module support, otherwise module load
142 may call it." */
143 #ifdef CONFIG_MODULES
144 #define __init_or_module
145 #define __initdata_or_module
146 #define __initconst_or_module
147 #define __INIT_OR_MODULE .text
148 #define __INITDATA_OR_MODULE .data
149 #define __INITRODATA_OR_MODULE .section ".rodata","a",%progbits
150 #else
151 #define __init_or_module __init
152 #define __initdata_or_module __initdata
153 #define __initconst_or_module __initconst
154 #define __INIT_OR_MODULE __INIT
155 #define __INITDATA_OR_MODULE __INITDATA
156 #define __INITRODATA_OR_MODULE __INITRODATA
157 #endif /*CONFIG_MODULES*/
158
159 /* Generic info of form tag = "info" */
160 #define MODULE_INFO(tag, info) __MODULE_INFO(tag, tag, info)
161
162 /* For userspace: you can also call me... */
163 #define MODULE_ALIAS(_alias) MODULE_INFO(alias, _alias)
164
165 /* Soft module dependencies. See man modprobe.d for details.
166 * Example: MODULE_SOFTDEP("pre: module-foo module-bar post: module-baz")
167 */
168 #define MODULE_SOFTDEP(_softdep) MODULE_INFO(softdep, _softdep)
169
170 /*
171 * The following license idents are currently accepted as indicating free
172 * software modules
173 *
174 * "GPL" [GNU Public License v2 or later]
175 * "GPL v2" [GNU Public License v2]
176 * "GPL and additional rights" [GNU Public License v2 rights and more]
177 * "Dual BSD/GPL" [GNU Public License v2
178 * or BSD license choice]
179 * "Dual MIT/GPL" [GNU Public License v2
180 * or MIT license choice]
181 * "Dual MPL/GPL" [GNU Public License v2
182 * or Mozilla license choice]
183 *
184 * The following other idents are available
185 *
186 * "Proprietary" [Non free products]
187 *
188 * There are dual licensed components, but when running with Linux it is the
189 * GPL that is relevant so this is a non issue. Similarly LGPL linked with GPL
190 * is a GPL combined work.
191 *
192 * This exists for several reasons
193 * 1. So modinfo can show license info for users wanting to vet their setup
194 * is free
195 * 2. So the community can ignore bug reports including proprietary modules
196 * 3. So vendors can do likewise based on their own policies
197 */
198 #define MODULE_LICENSE(_license) MODULE_INFO(license, _license)
199
200 /*
201 * Author(s), use "Name <email>" or just "Name", for multiple
202 * authors use multiple MODULE_AUTHOR() statements/lines.
203 */
204 #define MODULE_AUTHOR(_author) MODULE_INFO(author, _author)
205
206 /* What your module does. */
207 #define MODULE_DESCRIPTION(_description) MODULE_INFO(description, _description)
208
209 #ifdef MODULE
210 /* Creates an alias so file2alias.c can find device table. */
211 #define MODULE_DEVICE_TABLE(type, name) \
212 extern const typeof(name) __mod_##type##__##name##_device_table \
213 __attribute__ ((unused, alias(__stringify(name))))
214 #else /* !MODULE */
215 #define MODULE_DEVICE_TABLE(type, name)
216 #endif
217
218 /* Version of form [<epoch>:]<version>[-<extra-version>].
219 * Or for CVS/RCS ID version, everything but the number is stripped.
220 * <epoch>: A (small) unsigned integer which allows you to start versions
221 * anew. If not mentioned, it's zero. eg. "2:1.0" is after
222 * "1:2.0".
223
224 * <version>: The <version> may contain only alphanumerics and the
225 * character `.'. Ordered by numeric sort for numeric parts,
226 * ascii sort for ascii parts (as per RPM or DEB algorithm).
227
228 * <extraversion>: Like <version>, but inserted for local
229 * customizations, eg "rh3" or "rusty1".
230
231 * Using this automatically adds a checksum of the .c files and the
232 * local headers in "srcversion".
233 */
234
235 #if defined(MODULE) || !defined(CONFIG_SYSFS)
236 #define MODULE_VERSION(_version) MODULE_INFO(version, _version)
237 #else
238 #define MODULE_VERSION(_version) \
239 static struct module_version_attribute ___modver_attr = { \
240 .mattr = { \
241 .attr = { \
242 .name = "version", \
243 .mode = S_IRUGO, \
244 }, \
245 .show = __modver_version_show, \
246 }, \
247 .module_name = KBUILD_MODNAME, \
248 .version = _version, \
249 }; \
250 static const struct module_version_attribute \
251 __used __attribute__ ((__section__ ("__modver"))) \
252 * __moduleparam_const __modver_attr = &___modver_attr
253 #endif
254
255 /* Optional firmware file (or files) needed by the module
256 * format is simply firmware file name. Multiple firmware
257 * files require multiple MODULE_FIRMWARE() specifiers */
258 #define MODULE_FIRMWARE(_firmware) MODULE_INFO(firmware, _firmware)
259
260 struct notifier_block;
261
262 #ifdef CONFIG_MODULES
263
264 extern int modules_disabled; /* for sysctl */
265 /* Get/put a kernel symbol (calls must be symmetric) */
266 void *__symbol_get(const char *symbol);
267 void *__symbol_get_gpl(const char *symbol);
268 #define symbol_get(x) ((typeof(&x))(__symbol_get(VMLINUX_SYMBOL_STR(x))))
269
270 /* modules using other modules: kdb wants to see this. */
271 struct module_use {
272 struct list_head source_list;
273 struct list_head target_list;
274 struct module *source, *target;
275 };
276
277 enum module_state {
278 MODULE_STATE_LIVE, /* Normal state. */
279 MODULE_STATE_COMING, /* Full formed, running module_init. */
280 MODULE_STATE_GOING, /* Going away. */
281 MODULE_STATE_UNFORMED, /* Still setting it up. */
282 };
283
284 struct mod_tree_node {
285 struct module *mod;
286 struct latch_tree_node node;
287 };
288
289 struct module_layout {
290 /* The actual code + data. */
291 void *base;
292 /* Total size. */
293 unsigned int size;
294 /* The size of the executable code. */
295 unsigned int text_size;
296 /* Size of RO section of the module (text+rodata) */
297 unsigned int ro_size;
298 /* Size of RO after init section */
299 unsigned int ro_after_init_size;
300
301 #ifdef CONFIG_MODULES_TREE_LOOKUP
302 struct mod_tree_node mtn;
303 #endif
304 };
305
306 #ifdef CONFIG_MODULES_TREE_LOOKUP
307 /* Only touch one cacheline for common rbtree-for-core-layout case. */
308 #define __module_layout_align ____cacheline_aligned
309 #else
310 #define __module_layout_align
311 #endif
312
313 struct mod_kallsyms {
314 Elf_Sym *symtab;
315 unsigned int num_symtab;
316 char *strtab;
317 };
318
319 #ifdef CONFIG_LIVEPATCH
320 struct klp_modinfo {
321 Elf_Ehdr hdr;
322 Elf_Shdr *sechdrs;
323 char *secstrings;
324 unsigned int symndx;
325 };
326 #endif
327
328 struct module {
329 enum module_state state;
330
331 /* Member of list of modules */
332 struct list_head list;
333
334 /* Unique handle for this module */
335 char name[MODULE_NAME_LEN];
336
337 /* Sysfs stuff. */
338 struct module_kobject mkobj;
339 struct module_attribute *modinfo_attrs;
340 const char *version;
341 const char *srcversion;
342 struct kobject *holders_dir;
343
344 /* Exported symbols */
345 const struct kernel_symbol *syms;
346 const s32 *crcs;
347 unsigned int num_syms;
348
349 /* Kernel parameters. */
350 #ifdef CONFIG_SYSFS
351 struct mutex param_lock;
352 #endif
353 struct kernel_param *kp;
354 unsigned int num_kp;
355
356 /* GPL-only exported symbols. */
357 unsigned int num_gpl_syms;
358 const struct kernel_symbol *gpl_syms;
359 const s32 *gpl_crcs;
360
361 #ifdef CONFIG_UNUSED_SYMBOLS
362 /* unused exported symbols. */
363 const struct kernel_symbol *unused_syms;
364 const s32 *unused_crcs;
365 unsigned int num_unused_syms;
366
367 /* GPL-only, unused exported symbols. */
368 unsigned int num_unused_gpl_syms;
369 const struct kernel_symbol *unused_gpl_syms;
370 const s32 *unused_gpl_crcs;
371 #endif
372
373 #ifdef CONFIG_MODULE_SIG
374 /* Signature was verified. */
375 bool sig_ok;
376 #endif
377
378 bool async_probe_requested;
379
380 /* symbols that will be GPL-only in the near future. */
381 const struct kernel_symbol *gpl_future_syms;
382 const s32 *gpl_future_crcs;
383 unsigned int num_gpl_future_syms;
384
385 /* Exception table */
386 unsigned int num_exentries;
387 struct exception_table_entry *extable;
388
389 /* Startup function. */
390 int (*init)(void);
391
392 /* Core layout: rbtree is accessed frequently, so keep together. */
393 struct module_layout core_layout __module_layout_align;
394 struct module_layout init_layout;
395
396 /* Arch-specific module values */
397 struct mod_arch_specific arch;
398
399 unsigned long taints; /* same bits as kernel:taint_flags */
400
401 #ifdef CONFIG_GENERIC_BUG
402 /* Support for BUG */
403 unsigned num_bugs;
404 struct list_head bug_list;
405 struct bug_entry *bug_table;
406 #endif
407
408 #ifdef CONFIG_KALLSYMS
409 /* Protected by RCU and/or module_mutex: use rcu_dereference() */
410 struct mod_kallsyms *kallsyms;
411 struct mod_kallsyms core_kallsyms;
412
413 /* Section attributes */
414 struct module_sect_attrs *sect_attrs;
415
416 /* Notes attributes */
417 struct module_notes_attrs *notes_attrs;
418 #endif
419
420 /* The command line arguments (may be mangled). People like
421 keeping pointers to this stuff */
422 char *args;
423
424 #ifdef CONFIG_SMP
425 /* Per-cpu data. */
426 void __percpu *percpu;
427 unsigned int percpu_size;
428 #endif
429
430 #ifdef CONFIG_TRACEPOINTS
431 unsigned int num_tracepoints;
432 struct tracepoint * const *tracepoints_ptrs;
433 #endif
434 #ifdef HAVE_JUMP_LABEL
435 struct jump_entry *jump_entries;
436 unsigned int num_jump_entries;
437 #endif
438 #ifdef CONFIG_TRACING
439 unsigned int num_trace_bprintk_fmt;
440 const char **trace_bprintk_fmt_start;
441 #endif
442 #ifdef CONFIG_EVENT_TRACING
443 struct trace_event_call **trace_events;
444 unsigned int num_trace_events;
445 struct trace_eval_map **trace_evals;
446 unsigned int num_trace_evals;
447 #endif
448 #ifdef CONFIG_FTRACE_MCOUNT_RECORD
449 unsigned int num_ftrace_callsites;
450 unsigned long *ftrace_callsites;
451 #endif
452
453 #ifdef CONFIG_LIVEPATCH
454 bool klp; /* Is this a livepatch module? */
455 bool klp_alive;
456
457 /* Elf information */
458 struct klp_modinfo *klp_info;
459 #endif
460
461 #ifdef CONFIG_MODULE_UNLOAD
462 /* What modules depend on me? */
463 struct list_head source_list;
464 /* What modules do I depend on? */
465 struct list_head target_list;
466
467 /* Destruction function. */
468 void (*exit)(void);
469
470 atomic_t refcnt;
471 #endif
472
473 #ifdef CONFIG_CONSTRUCTORS
474 /* Constructor functions. */
475 ctor_fn_t *ctors;
476 unsigned int num_ctors;
477 #endif
478 } ____cacheline_aligned __randomize_layout;
479 #ifndef MODULE_ARCH_INIT
480 #define MODULE_ARCH_INIT {}
481 #endif
482
483 extern struct mutex module_mutex;
484
485 /* FIXME: It'd be nice to isolate modules during init, too, so they
486 aren't used before they (may) fail. But presently too much code
487 (IDE & SCSI) require entry into the module during init.*/
488 static inline int module_is_live(struct module *mod)
489 {
490 return mod->state != MODULE_STATE_GOING;
491 }
492
493 struct module *__module_text_address(unsigned long addr);
494 struct module *__module_address(unsigned long addr);
495 bool is_module_address(unsigned long addr);
496 bool __is_module_percpu_address(unsigned long addr, unsigned long *can_addr);
497 bool is_module_percpu_address(unsigned long addr);
498 bool is_module_text_address(unsigned long addr);
499
500 static inline bool within_module_core(unsigned long addr,
501 const struct module *mod)
502 {
503 return (unsigned long)mod->core_layout.base <= addr &&
504 addr < (unsigned long)mod->core_layout.base + mod->core_layout.size;
505 }
506
507 static inline bool within_module_init(unsigned long addr,
508 const struct module *mod)
509 {
510 return (unsigned long)mod->init_layout.base <= addr &&
511 addr < (unsigned long)mod->init_layout.base + mod->init_layout.size;
512 }
513
514 static inline bool within_module(unsigned long addr, const struct module *mod)
515 {
516 return within_module_init(addr, mod) || within_module_core(addr, mod);
517 }
518
519 /* Search for module by name: must hold module_mutex. */
520 struct module *find_module(const char *name);
521
522 struct symsearch {
523 const struct kernel_symbol *start, *stop;
524 const s32 *crcs;
525 enum {
526 NOT_GPL_ONLY,
527 GPL_ONLY,
528 WILL_BE_GPL_ONLY,
529 } licence;
530 bool unused;
531 };
532
533 /*
534 * Search for an exported symbol by name.
535 *
536 * Must be called with module_mutex held or preemption disabled.
537 */
538 const struct kernel_symbol *find_symbol(const char *name,
539 struct module **owner,
540 const s32 **crc,
541 bool gplok,
542 bool warn);
543
544 /*
545 * Walk the exported symbol table
546 *
547 * Must be called with module_mutex held or preemption disabled.
548 */
549 bool each_symbol_section(bool (*fn)(const struct symsearch *arr,
550 struct module *owner,
551 void *data), void *data);
552
553 /* Returns 0 and fills in value, defined and namebuf, or -ERANGE if
554 symnum out of range. */
555 int module_get_kallsym(unsigned int symnum, unsigned long *value, char *type,
556 char *name, char *module_name, int *exported);
557
558 /* Look for this name: can be of form module:name. */
559 unsigned long module_kallsyms_lookup_name(const char *name);
560
561 int module_kallsyms_on_each_symbol(int (*fn)(void *, const char *,
562 struct module *, unsigned long),
563 void *data);
564
565 extern void __noreturn __module_put_and_exit(struct module *mod,
566 long code);
567 #define module_put_and_exit(code) __module_put_and_exit(THIS_MODULE, code)
568
569 #ifdef CONFIG_MODULE_UNLOAD
570 int module_refcount(struct module *mod);
571 void __symbol_put(const char *symbol);
572 #define symbol_put(x) __symbol_put(VMLINUX_SYMBOL_STR(x))
573 void symbol_put_addr(void *addr);
574
575 /* Sometimes we know we already have a refcount, and it's easier not
576 to handle the error case (which only happens with rmmod --wait). */
577 extern void __module_get(struct module *module);
578
579 /* This is the Right Way to get a module: if it fails, it's being removed,
580 * so pretend it's not there. */
581 extern bool try_module_get(struct module *module);
582
583 extern void module_put(struct module *module);
584
585 #else /*!CONFIG_MODULE_UNLOAD*/
586 static inline bool try_module_get(struct module *module)
587 {
588 return !module || module_is_live(module);
589 }
590 static inline void module_put(struct module *module)
591 {
592 }
593 static inline void __module_get(struct module *module)
594 {
595 }
596 #define symbol_put(x) do { } while (0)
597 #define symbol_put_addr(p) do { } while (0)
598
599 #endif /* CONFIG_MODULE_UNLOAD */
600 int ref_module(struct module *a, struct module *b);
601
602 /* This is a #define so the string doesn't get put in every .o file */
603 #define module_name(mod) \
604 ({ \
605 struct module *__mod = (mod); \
606 __mod ? __mod->name : "kernel"; \
607 })
608
609 /* For kallsyms to ask for address resolution. namebuf should be at
610 * least KSYM_NAME_LEN long: a pointer to namebuf is returned if
611 * found, otherwise NULL. */
612 const char *module_address_lookup(unsigned long addr,
613 unsigned long *symbolsize,
614 unsigned long *offset,
615 char **modname,
616 char *namebuf);
617 int lookup_module_symbol_name(unsigned long addr, char *symname);
618 int lookup_module_symbol_attrs(unsigned long addr, unsigned long *size, unsigned long *offset, char *modname, char *name);
619
620 int register_module_notifier(struct notifier_block *nb);
621 int unregister_module_notifier(struct notifier_block *nb);
622
623 extern void print_modules(void);
624
625 static inline bool module_requested_async_probing(struct module *module)
626 {
627 return module && module->async_probe_requested;
628 }
629
630 #ifdef CONFIG_LIVEPATCH
631 static inline bool is_livepatch_module(struct module *mod)
632 {
633 return mod->klp;
634 }
635 #else /* !CONFIG_LIVEPATCH */
636 static inline bool is_livepatch_module(struct module *mod)
637 {
638 return false;
639 }
640 #endif /* CONFIG_LIVEPATCH */
641
642 #else /* !CONFIG_MODULES... */
643
644 static inline struct module *__module_address(unsigned long addr)
645 {
646 return NULL;
647 }
648
649 static inline struct module *__module_text_address(unsigned long addr)
650 {
651 return NULL;
652 }
653
654 static inline bool is_module_address(unsigned long addr)
655 {
656 return false;
657 }
658
659 static inline bool is_module_percpu_address(unsigned long addr)
660 {
661 return false;
662 }
663
664 static inline bool __is_module_percpu_address(unsigned long addr, unsigned long *can_addr)
665 {
666 return false;
667 }
668
669 static inline bool is_module_text_address(unsigned long addr)
670 {
671 return false;
672 }
673
674 /* Get/put a kernel symbol (calls should be symmetric) */
675 #define symbol_get(x) ({ extern typeof(x) x __attribute__((weak)); &(x); })
676 #define symbol_put(x) do { } while (0)
677 #define symbol_put_addr(x) do { } while (0)
678
679 static inline void __module_get(struct module *module)
680 {
681 }
682
683 static inline bool try_module_get(struct module *module)
684 {
685 return true;
686 }
687
688 static inline void module_put(struct module *module)
689 {
690 }
691
692 #define module_name(mod) "kernel"
693
694 /* For kallsyms to ask for address resolution. NULL means not found. */
695 static inline const char *module_address_lookup(unsigned long addr,
696 unsigned long *symbolsize,
697 unsigned long *offset,
698 char **modname,
699 char *namebuf)
700 {
701 return NULL;
702 }
703
704 static inline int lookup_module_symbol_name(unsigned long addr, char *symname)
705 {
706 return -ERANGE;
707 }
708
709 static inline int lookup_module_symbol_attrs(unsigned long addr, unsigned long *size, unsigned long *offset, char *modname, char *name)
710 {
711 return -ERANGE;
712 }
713
714 static inline int module_get_kallsym(unsigned int symnum, unsigned long *value,
715 char *type, char *name,
716 char *module_name, int *exported)
717 {
718 return -ERANGE;
719 }
720
721 static inline unsigned long module_kallsyms_lookup_name(const char *name)
722 {
723 return 0;
724 }
725
726 static inline int module_kallsyms_on_each_symbol(int (*fn)(void *, const char *,
727 struct module *,
728 unsigned long),
729 void *data)
730 {
731 return 0;
732 }
733
734 static inline int register_module_notifier(struct notifier_block *nb)
735 {
736 /* no events will happen anyway, so this can always succeed */
737 return 0;
738 }
739
740 static inline int unregister_module_notifier(struct notifier_block *nb)
741 {
742 return 0;
743 }
744
745 #define module_put_and_exit(code) do_exit(code)
746
747 static inline void print_modules(void)
748 {
749 }
750
751 static inline bool module_requested_async_probing(struct module *module)
752 {
753 return false;
754 }
755
756 #endif /* CONFIG_MODULES */
757
758 #ifdef CONFIG_SYSFS
759 extern struct kset *module_kset;
760 extern struct kobj_type module_ktype;
761 extern int module_sysfs_initialized;
762 #endif /* CONFIG_SYSFS */
763
764 #define symbol_request(x) try_then_request_module(symbol_get(x), "symbol:" #x)
765
766 /* BELOW HERE ALL THESE ARE OBSOLETE AND WILL VANISH */
767
768 #define __MODULE_STRING(x) __stringify(x)
769
770 #ifdef CONFIG_STRICT_MODULE_RWX
771 extern void set_all_modules_text_rw(void);
772 extern void set_all_modules_text_ro(void);
773 extern void module_enable_ro(const struct module *mod, bool after_init);
774 extern void module_disable_ro(const struct module *mod);
775 #else
776 static inline void set_all_modules_text_rw(void) { }
777 static inline void set_all_modules_text_ro(void) { }
778 static inline void module_enable_ro(const struct module *mod, bool after_init) { }
779 static inline void module_disable_ro(const struct module *mod) { }
780 #endif
781
782 #ifdef CONFIG_GENERIC_BUG
783 void module_bug_finalize(const Elf_Ehdr *, const Elf_Shdr *,
784 struct module *);
785 void module_bug_cleanup(struct module *);
786
787 #else /* !CONFIG_GENERIC_BUG */
788
789 static inline void module_bug_finalize(const Elf_Ehdr *hdr,
790 const Elf_Shdr *sechdrs,
791 struct module *mod)
792 {
793 }
794 static inline void module_bug_cleanup(struct module *mod) {}
795 #endif /* CONFIG_GENERIC_BUG */
796
797 #ifdef CONFIG_MODULE_SIG
798 static inline bool module_sig_ok(struct module *module)
799 {
800 return module->sig_ok;
801 }
802 #else /* !CONFIG_MODULE_SIG */
803 static inline bool module_sig_ok(struct module *module)
804 {
805 return true;
806 }
807 #endif /* CONFIG_MODULE_SIG */
808
809 #endif /* _LINUX_MODULE_H */
810
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