Commit | Line | Data |
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1da177e4 LT |
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 | */ | |
1da177e4 LT |
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/elf.h> | |
15 | #include <linux/stringify.h> | |
16 | #include <linux/kobject.h> | |
17 | #include <linux/moduleparam.h> | |
8256e47c | 18 | #include <linux/marker.h> |
97e1c18e | 19 | #include <linux/tracepoint.h> |
1da177e4 LT |
20 | #include <asm/local.h> |
21 | ||
22 | #include <asm/module.h> | |
23 | ||
24 | /* Not Yet Implemented */ | |
25 | #define MODULE_SUPPORTED_DEVICE(name) | |
26 | ||
f606ddf4 | 27 | /* some toolchains uses a `_' prefix for all user symbols */ |
1da177e4 LT |
28 | #ifndef MODULE_SYMBOL_PREFIX |
29 | #define MODULE_SYMBOL_PREFIX "" | |
30 | #endif | |
31 | ||
730b69d2 | 32 | #define MODULE_NAME_LEN MAX_PARAM_PREFIX_LEN |
1da177e4 LT |
33 | |
34 | struct kernel_symbol | |
35 | { | |
36 | unsigned long value; | |
37 | const char *name; | |
38 | }; | |
39 | ||
40 | struct modversion_info | |
41 | { | |
42 | unsigned long crc; | |
43 | char name[MODULE_NAME_LEN]; | |
44 | }; | |
45 | ||
46 | struct module; | |
47 | ||
48 | struct module_attribute { | |
49 | struct attribute attr; | |
50 | ssize_t (*show)(struct module_attribute *, struct module *, char *); | |
51 | ssize_t (*store)(struct module_attribute *, struct module *, | |
52 | const char *, size_t count); | |
c988d2b2 MD |
53 | void (*setup)(struct module *, const char *); |
54 | int (*test)(struct module *); | |
55 | void (*free)(struct module *); | |
1da177e4 LT |
56 | }; |
57 | ||
58 | struct module_kobject | |
59 | { | |
60 | struct kobject kobj; | |
61 | struct module *mod; | |
f30c53a8 | 62 | struct kobject *drivers_dir; |
9b473de8 | 63 | struct module_param_attrs *mp; |
1da177e4 LT |
64 | }; |
65 | ||
66 | /* These are either module local, or the kernel's dummy ones. */ | |
67 | extern int init_module(void); | |
68 | extern void cleanup_module(void); | |
69 | ||
70 | /* Archs provide a method of finding the correct exception table. */ | |
71 | struct exception_table_entry; | |
72 | ||
73 | const struct exception_table_entry * | |
74 | search_extable(const struct exception_table_entry *first, | |
75 | const struct exception_table_entry *last, | |
76 | unsigned long value); | |
77 | void sort_extable(struct exception_table_entry *start, | |
78 | struct exception_table_entry *finish); | |
79 | void sort_main_extable(void); | |
80 | ||
1da177e4 LT |
81 | #ifdef MODULE |
82 | #define MODULE_GENERIC_TABLE(gtype,name) \ | |
83 | extern const struct gtype##_id __mod_##gtype##_table \ | |
84 | __attribute__ ((unused, alias(__stringify(name)))) | |
85 | ||
86 | extern struct module __this_module; | |
87 | #define THIS_MODULE (&__this_module) | |
88 | #else /* !MODULE */ | |
89 | #define MODULE_GENERIC_TABLE(gtype,name) | |
90 | #define THIS_MODULE ((struct module *)0) | |
91 | #endif | |
92 | ||
93 | /* Generic info of form tag = "info" */ | |
94 | #define MODULE_INFO(tag, info) __MODULE_INFO(tag, tag, info) | |
95 | ||
96 | /* For userspace: you can also call me... */ | |
97 | #define MODULE_ALIAS(_alias) MODULE_INFO(alias, _alias) | |
98 | ||
99 | /* | |
100 | * The following license idents are currently accepted as indicating free | |
101 | * software modules | |
102 | * | |
103 | * "GPL" [GNU Public License v2 or later] | |
104 | * "GPL v2" [GNU Public License v2] | |
105 | * "GPL and additional rights" [GNU Public License v2 rights and more] | |
106 | * "Dual BSD/GPL" [GNU Public License v2 | |
107 | * or BSD license choice] | |
8d27e908 XVP |
108 | * "Dual MIT/GPL" [GNU Public License v2 |
109 | * or MIT license choice] | |
1da177e4 LT |
110 | * "Dual MPL/GPL" [GNU Public License v2 |
111 | * or Mozilla license choice] | |
112 | * | |
113 | * The following other idents are available | |
114 | * | |
115 | * "Proprietary" [Non free products] | |
116 | * | |
117 | * There are dual licensed components, but when running with Linux it is the | |
118 | * GPL that is relevant so this is a non issue. Similarly LGPL linked with GPL | |
119 | * is a GPL combined work. | |
120 | * | |
121 | * This exists for several reasons | |
122 | * 1. So modinfo can show license info for users wanting to vet their setup | |
123 | * is free | |
124 | * 2. So the community can ignore bug reports including proprietary modules | |
125 | * 3. So vendors can do likewise based on their own policies | |
126 | */ | |
127 | #define MODULE_LICENSE(_license) MODULE_INFO(license, _license) | |
128 | ||
108f39a1 | 129 | /* Author, ideally of form NAME[, NAME]*[ and NAME] */ |
1da177e4 LT |
130 | #define MODULE_AUTHOR(_author) MODULE_INFO(author, _author) |
131 | ||
132 | /* What your module does. */ | |
133 | #define MODULE_DESCRIPTION(_description) MODULE_INFO(description, _description) | |
134 | ||
135 | /* One for each parameter, describing how to use it. Some files do | |
136 | multiple of these per line, so can't just use MODULE_INFO. */ | |
137 | #define MODULE_PARM_DESC(_parm, desc) \ | |
138 | __MODULE_INFO(parm, _parm, #_parm ":" desc) | |
139 | ||
140 | #define MODULE_DEVICE_TABLE(type,name) \ | |
141 | MODULE_GENERIC_TABLE(type##_device,name) | |
142 | ||
143 | /* Version of form [<epoch>:]<version>[-<extra-version>]. | |
144 | Or for CVS/RCS ID version, everything but the number is stripped. | |
145 | <epoch>: A (small) unsigned integer which allows you to start versions | |
146 | anew. If not mentioned, it's zero. eg. "2:1.0" is after | |
147 | "1:2.0". | |
148 | <version>: The <version> may contain only alphanumerics and the | |
149 | character `.'. Ordered by numeric sort for numeric parts, | |
150 | ascii sort for ascii parts (as per RPM or DEB algorithm). | |
151 | <extraversion>: Like <version>, but inserted for local | |
152 | customizations, eg "rh3" or "rusty1". | |
153 | ||
154 | Using this automatically adds a checksum of the .c files and the | |
155 | local headers in "srcversion". | |
156 | */ | |
157 | #define MODULE_VERSION(_version) MODULE_INFO(version, _version) | |
158 | ||
187afbed JM |
159 | /* Optional firmware file (or files) needed by the module |
160 | * format is simply firmware file name. Multiple firmware | |
161 | * files require multiple MODULE_FIRMWARE() specifiers */ | |
162 | #define MODULE_FIRMWARE(_firmware) MODULE_INFO(firmware, _firmware) | |
163 | ||
1da177e4 LT |
164 | /* Given an address, look for it in the exception tables */ |
165 | const struct exception_table_entry *search_exception_tables(unsigned long add); | |
166 | ||
167 | struct notifier_block; | |
168 | ||
169 | #ifdef CONFIG_MODULES | |
170 | ||
171 | /* Get/put a kernel symbol (calls must be symmetric) */ | |
172 | void *__symbol_get(const char *symbol); | |
173 | void *__symbol_get_gpl(const char *symbol); | |
174 | #define symbol_get(x) ((typeof(&x))(__symbol_get(MODULE_SYMBOL_PREFIX #x))) | |
175 | ||
176 | #ifndef __GENKSYMS__ | |
177 | #ifdef CONFIG_MODVERSIONS | |
178 | /* Mark the CRC weak since genksyms apparently decides not to | |
179 | * generate a checksums for some symbols */ | |
180 | #define __CRC_SYMBOL(sym, sec) \ | |
181 | extern void *__crc_##sym __attribute__((weak)); \ | |
182 | static const unsigned long __kcrctab_##sym \ | |
3ff6eecc | 183 | __used \ |
1da177e4 LT |
184 | __attribute__((section("__kcrctab" sec), unused)) \ |
185 | = (unsigned long) &__crc_##sym; | |
186 | #else | |
187 | #define __CRC_SYMBOL(sym, sec) | |
188 | #endif | |
189 | ||
190 | /* For every exported symbol, place a struct in the __ksymtab section */ | |
191 | #define __EXPORT_SYMBOL(sym, sec) \ | |
a1a8feed | 192 | extern typeof(sym) sym; \ |
1da177e4 LT |
193 | __CRC_SYMBOL(sym, sec) \ |
194 | static const char __kstrtab_##sym[] \ | |
ea01e798 | 195 | __attribute__((section("__ksymtab_strings"), aligned(1))) \ |
1da177e4 LT |
196 | = MODULE_SYMBOL_PREFIX #sym; \ |
197 | static const struct kernel_symbol __ksymtab_##sym \ | |
3ff6eecc | 198 | __used \ |
1da177e4 LT |
199 | __attribute__((section("__ksymtab" sec), unused)) \ |
200 | = { (unsigned long)&sym, __kstrtab_##sym } | |
201 | ||
202 | #define EXPORT_SYMBOL(sym) \ | |
203 | __EXPORT_SYMBOL(sym, "") | |
204 | ||
205 | #define EXPORT_SYMBOL_GPL(sym) \ | |
206 | __EXPORT_SYMBOL(sym, "_gpl") | |
207 | ||
9f28bb7e GKH |
208 | #define EXPORT_SYMBOL_GPL_FUTURE(sym) \ |
209 | __EXPORT_SYMBOL(sym, "_gpl_future") | |
210 | ||
f71d20e9 AV |
211 | |
212 | #ifdef CONFIG_UNUSED_SYMBOLS | |
213 | #define EXPORT_UNUSED_SYMBOL(sym) __EXPORT_SYMBOL(sym, "_unused") | |
214 | #define EXPORT_UNUSED_SYMBOL_GPL(sym) __EXPORT_SYMBOL(sym, "_unused_gpl") | |
215 | #else | |
216 | #define EXPORT_UNUSED_SYMBOL(sym) | |
217 | #define EXPORT_UNUSED_SYMBOL_GPL(sym) | |
218 | #endif | |
219 | ||
1da177e4 LT |
220 | #endif |
221 | ||
1da177e4 LT |
222 | enum module_state |
223 | { | |
224 | MODULE_STATE_LIVE, | |
225 | MODULE_STATE_COMING, | |
226 | MODULE_STATE_GOING, | |
227 | }; | |
228 | ||
1da177e4 LT |
229 | struct module |
230 | { | |
231 | enum module_state state; | |
232 | ||
233 | /* Member of list of modules */ | |
234 | struct list_head list; | |
235 | ||
236 | /* Unique handle for this module */ | |
237 | char name[MODULE_NAME_LEN]; | |
238 | ||
239 | /* Sysfs stuff. */ | |
240 | struct module_kobject mkobj; | |
03e88ae1 | 241 | struct module_attribute *modinfo_attrs; |
c988d2b2 MD |
242 | const char *version; |
243 | const char *srcversion; | |
270a6c4c | 244 | struct kobject *holders_dir; |
1da177e4 LT |
245 | |
246 | /* Exported symbols */ | |
247 | const struct kernel_symbol *syms; | |
1da177e4 | 248 | const unsigned long *crcs; |
af540689 | 249 | unsigned int num_syms; |
1da177e4 LT |
250 | |
251 | /* GPL-only exported symbols. */ | |
1da177e4 | 252 | unsigned int num_gpl_syms; |
af540689 | 253 | const struct kernel_symbol *gpl_syms; |
1da177e4 LT |
254 | const unsigned long *gpl_crcs; |
255 | ||
f7f5b675 | 256 | #ifdef CONFIG_UNUSED_SYMBOLS |
f71d20e9 AV |
257 | /* unused exported symbols. */ |
258 | const struct kernel_symbol *unused_syms; | |
f71d20e9 | 259 | const unsigned long *unused_crcs; |
af540689 RK |
260 | unsigned int num_unused_syms; |
261 | ||
f71d20e9 | 262 | /* GPL-only, unused exported symbols. */ |
f71d20e9 | 263 | unsigned int num_unused_gpl_syms; |
af540689 | 264 | const struct kernel_symbol *unused_gpl_syms; |
f71d20e9 | 265 | const unsigned long *unused_gpl_crcs; |
f7f5b675 | 266 | #endif |
f71d20e9 | 267 | |
9f28bb7e GKH |
268 | /* symbols that will be GPL-only in the near future. */ |
269 | const struct kernel_symbol *gpl_future_syms; | |
9f28bb7e | 270 | const unsigned long *gpl_future_crcs; |
af540689 | 271 | unsigned int num_gpl_future_syms; |
9f28bb7e | 272 | |
1da177e4 LT |
273 | /* Exception table */ |
274 | unsigned int num_exentries; | |
5e458cc0 | 275 | struct exception_table_entry *extable; |
1da177e4 LT |
276 | |
277 | /* Startup function. */ | |
278 | int (*init)(void); | |
279 | ||
280 | /* If this is non-NULL, vfree after init() returns */ | |
281 | void *module_init; | |
282 | ||
283 | /* Here is the actual code + data, vfree'd on unload. */ | |
284 | void *module_core; | |
285 | ||
286 | /* Here are the sizes of the init and core sections */ | |
2f0f2a33 | 287 | unsigned int init_size, core_size; |
1da177e4 LT |
288 | |
289 | /* The size of the executable code in each section. */ | |
2f0f2a33 | 290 | unsigned int init_text_size, core_text_size; |
1da177e4 LT |
291 | |
292 | /* Arch-specific module values */ | |
293 | struct mod_arch_specific arch; | |
294 | ||
2bc2d61a RD |
295 | unsigned int taints; /* same bits as kernel:tainted */ |
296 | ||
7664c5a1 JF |
297 | #ifdef CONFIG_GENERIC_BUG |
298 | /* Support for BUG */ | |
af540689 | 299 | unsigned num_bugs; |
7664c5a1 JF |
300 | struct list_head bug_list; |
301 | struct bug_entry *bug_table; | |
1da177e4 LT |
302 | #endif |
303 | ||
304 | #ifdef CONFIG_KALLSYMS | |
305 | /* We keep the symbol and string tables for kallsyms. */ | |
306 | Elf_Sym *symtab; | |
2f0f2a33 | 307 | unsigned int num_symtab; |
1da177e4 LT |
308 | char *strtab; |
309 | ||
310 | /* Section attributes */ | |
311 | struct module_sect_attrs *sect_attrs; | |
6d760133 RM |
312 | |
313 | /* Notes attributes */ | |
314 | struct module_notes_attrs *notes_attrs; | |
1da177e4 LT |
315 | #endif |
316 | ||
317 | /* Per-cpu data. */ | |
318 | void *percpu; | |
319 | ||
320 | /* The command line arguments (may be mangled). People like | |
321 | keeping pointers to this stuff */ | |
322 | char *args; | |
8256e47c MD |
323 | #ifdef CONFIG_MARKERS |
324 | struct marker *markers; | |
325 | unsigned int num_markers; | |
326 | #endif | |
97e1c18e MD |
327 | #ifdef CONFIG_TRACEPOINTS |
328 | struct tracepoint *tracepoints; | |
329 | unsigned int num_tracepoints; | |
330 | #endif | |
af540689 RK |
331 | |
332 | #ifdef CONFIG_MODULE_UNLOAD | |
333 | /* What modules depend on me? */ | |
334 | struct list_head modules_which_use_me; | |
335 | ||
336 | /* Who is waiting for us to be unloaded */ | |
337 | struct task_struct *waiter; | |
338 | ||
339 | /* Destruction function. */ | |
340 | void (*exit)(void); | |
341 | ||
720eba31 ED |
342 | #ifdef CONFIG_SMP |
343 | char *refptr; | |
344 | #else | |
345 | local_t ref; | |
346 | #endif | |
af540689 | 347 | #endif |
1da177e4 | 348 | }; |
e61a1c1c RZ |
349 | #ifndef MODULE_ARCH_INIT |
350 | #define MODULE_ARCH_INIT {} | |
351 | #endif | |
1da177e4 LT |
352 | |
353 | /* FIXME: It'd be nice to isolate modules during init, too, so they | |
354 | aren't used before they (may) fail. But presently too much code | |
355 | (IDE & SCSI) require entry into the module during init.*/ | |
356 | static inline int module_is_live(struct module *mod) | |
357 | { | |
358 | return mod->state != MODULE_STATE_GOING; | |
359 | } | |
360 | ||
361 | /* Is this address in a module? (second is with no locks, for oops) */ | |
362 | struct module *module_text_address(unsigned long addr); | |
363 | struct module *__module_text_address(unsigned long addr); | |
4d435f9d | 364 | int is_module_address(unsigned long addr); |
1da177e4 | 365 | |
a06f6211 MH |
366 | static inline int within_module_core(unsigned long addr, struct module *mod) |
367 | { | |
368 | return (unsigned long)mod->module_core <= addr && | |
369 | addr < (unsigned long)mod->module_core + mod->core_size; | |
370 | } | |
371 | ||
372 | static inline int within_module_init(unsigned long addr, struct module *mod) | |
373 | { | |
374 | return (unsigned long)mod->module_init <= addr && | |
375 | addr < (unsigned long)mod->module_init + mod->init_size; | |
376 | } | |
377 | ||
ea07890a | 378 | /* Returns 0 and fills in value, defined and namebuf, or -ERANGE if |
1da177e4 | 379 | symnum out of range. */ |
ea07890a AD |
380 | int module_get_kallsym(unsigned int symnum, unsigned long *value, char *type, |
381 | char *name, char *module_name, int *exported); | |
1da177e4 LT |
382 | |
383 | /* Look for this name: can be of form module:name. */ | |
384 | unsigned long module_kallsyms_lookup_name(const char *name); | |
385 | ||
1da177e4 LT |
386 | extern void __module_put_and_exit(struct module *mod, long code) |
387 | __attribute__((noreturn)); | |
388 | #define module_put_and_exit(code) __module_put_and_exit(THIS_MODULE, code); | |
389 | ||
390 | #ifdef CONFIG_MODULE_UNLOAD | |
391 | unsigned int module_refcount(struct module *mod); | |
392 | void __symbol_put(const char *symbol); | |
393 | #define symbol_put(x) __symbol_put(MODULE_SYMBOL_PREFIX #x) | |
394 | void symbol_put_addr(void *addr); | |
395 | ||
720eba31 ED |
396 | static inline local_t *__module_ref_addr(struct module *mod, int cpu) |
397 | { | |
398 | #ifdef CONFIG_SMP | |
399 | return (local_t *) (mod->refptr + per_cpu_offset(cpu)); | |
400 | #else | |
401 | return &mod->ref; | |
402 | #endif | |
403 | } | |
404 | ||
1da177e4 LT |
405 | /* Sometimes we know we already have a refcount, and it's easier not |
406 | to handle the error case (which only happens with rmmod --wait). */ | |
407 | static inline void __module_get(struct module *module) | |
408 | { | |
409 | if (module) { | |
410 | BUG_ON(module_refcount(module) == 0); | |
720eba31 | 411 | local_inc(__module_ref_addr(module, get_cpu())); |
1da177e4 LT |
412 | put_cpu(); |
413 | } | |
414 | } | |
415 | ||
416 | static inline int try_module_get(struct module *module) | |
417 | { | |
418 | int ret = 1; | |
419 | ||
420 | if (module) { | |
421 | unsigned int cpu = get_cpu(); | |
422 | if (likely(module_is_live(module))) | |
720eba31 | 423 | local_inc(__module_ref_addr(module, cpu)); |
1da177e4 LT |
424 | else |
425 | ret = 0; | |
426 | put_cpu(); | |
427 | } | |
428 | return ret; | |
429 | } | |
430 | ||
f6a57033 | 431 | extern void module_put(struct module *module); |
1da177e4 LT |
432 | |
433 | #else /*!CONFIG_MODULE_UNLOAD*/ | |
434 | static inline int try_module_get(struct module *module) | |
435 | { | |
436 | return !module || module_is_live(module); | |
437 | } | |
438 | static inline void module_put(struct module *module) | |
439 | { | |
440 | } | |
441 | static inline void __module_get(struct module *module) | |
442 | { | |
443 | } | |
444 | #define symbol_put(x) do { } while(0) | |
445 | #define symbol_put_addr(p) do { } while(0) | |
446 | ||
447 | #endif /* CONFIG_MODULE_UNLOAD */ | |
448 | ||
449 | /* This is a #define so the string doesn't get put in every .o file */ | |
450 | #define module_name(mod) \ | |
451 | ({ \ | |
452 | struct module *__mod = (mod); \ | |
453 | __mod ? __mod->name : "kernel"; \ | |
454 | }) | |
455 | ||
6dd06c9f RR |
456 | /* For kallsyms to ask for address resolution. namebuf should be at |
457 | * least KSYM_NAME_LEN long: a pointer to namebuf is returned if | |
458 | * found, otherwise NULL. */ | |
92dfc9dc | 459 | const char *module_address_lookup(unsigned long addr, |
6dd06c9f RR |
460 | unsigned long *symbolsize, |
461 | unsigned long *offset, | |
462 | char **modname, | |
463 | char *namebuf); | |
9d65cb4a | 464 | int lookup_module_symbol_name(unsigned long addr, char *symname); |
a5c43dae | 465 | int lookup_module_symbol_attrs(unsigned long addr, unsigned long *size, unsigned long *offset, char *modname, char *name); |
1da177e4 LT |
466 | |
467 | /* For extable.c to search modules' exception tables. */ | |
468 | const struct exception_table_entry *search_module_extables(unsigned long addr); | |
469 | ||
470 | int register_module_notifier(struct notifier_block * nb); | |
471 | int unregister_module_notifier(struct notifier_block * nb); | |
472 | ||
473 | extern void print_modules(void); | |
474 | ||
fb40bd78 | 475 | extern void module_update_markers(void); |
8256e47c | 476 | |
97e1c18e MD |
477 | extern void module_update_tracepoints(void); |
478 | extern int module_get_iter_tracepoints(struct tracepoint_iter *iter); | |
479 | ||
1da177e4 LT |
480 | #else /* !CONFIG_MODULES... */ |
481 | #define EXPORT_SYMBOL(sym) | |
482 | #define EXPORT_SYMBOL_GPL(sym) | |
9f28bb7e | 483 | #define EXPORT_SYMBOL_GPL_FUTURE(sym) |
f71d20e9 AV |
484 | #define EXPORT_UNUSED_SYMBOL(sym) |
485 | #define EXPORT_UNUSED_SYMBOL_GPL(sym) | |
1da177e4 LT |
486 | |
487 | /* Given an address, look for it in the exception tables. */ | |
488 | static inline const struct exception_table_entry * | |
489 | search_module_extables(unsigned long addr) | |
490 | { | |
491 | return NULL; | |
492 | } | |
493 | ||
494 | /* Is this address in a module? */ | |
495 | static inline struct module *module_text_address(unsigned long addr) | |
496 | { | |
497 | return NULL; | |
498 | } | |
499 | ||
500 | /* Is this address in a module? (don't take a lock, we're oopsing) */ | |
501 | static inline struct module *__module_text_address(unsigned long addr) | |
502 | { | |
503 | return NULL; | |
504 | } | |
505 | ||
4d435f9d IM |
506 | static inline int is_module_address(unsigned long addr) |
507 | { | |
508 | return 0; | |
509 | } | |
510 | ||
1da177e4 LT |
511 | /* Get/put a kernel symbol (calls should be symmetric) */ |
512 | #define symbol_get(x) ({ extern typeof(x) x __attribute__((weak)); &(x); }) | |
513 | #define symbol_put(x) do { } while(0) | |
514 | #define symbol_put_addr(x) do { } while(0) | |
515 | ||
516 | static inline void __module_get(struct module *module) | |
517 | { | |
518 | } | |
519 | ||
520 | static inline int try_module_get(struct module *module) | |
521 | { | |
522 | return 1; | |
523 | } | |
524 | ||
525 | static inline void module_put(struct module *module) | |
526 | { | |
527 | } | |
528 | ||
529 | #define module_name(mod) "kernel" | |
530 | ||
1da177e4 | 531 | /* For kallsyms to ask for address resolution. NULL means not found. */ |
92dfc9dc | 532 | static inline const char *module_address_lookup(unsigned long addr, |
6dd06c9f RR |
533 | unsigned long *symbolsize, |
534 | unsigned long *offset, | |
535 | char **modname, | |
536 | char *namebuf) | |
1da177e4 LT |
537 | { |
538 | return NULL; | |
539 | } | |
540 | ||
9d65cb4a AD |
541 | static inline int lookup_module_symbol_name(unsigned long addr, char *symname) |
542 | { | |
543 | return -ERANGE; | |
544 | } | |
545 | ||
a5c43dae AD |
546 | static inline int lookup_module_symbol_attrs(unsigned long addr, unsigned long *size, unsigned long *offset, char *modname, char *name) |
547 | { | |
548 | return -ERANGE; | |
549 | } | |
550 | ||
ea07890a AD |
551 | static inline int module_get_kallsym(unsigned int symnum, unsigned long *value, |
552 | char *type, char *name, | |
553 | char *module_name, int *exported) | |
1da177e4 | 554 | { |
ea07890a | 555 | return -ERANGE; |
1da177e4 LT |
556 | } |
557 | ||
558 | static inline unsigned long module_kallsyms_lookup_name(const char *name) | |
559 | { | |
560 | return 0; | |
561 | } | |
562 | ||
1da177e4 LT |
563 | static inline int register_module_notifier(struct notifier_block * nb) |
564 | { | |
565 | /* no events will happen anyway, so this can always succeed */ | |
566 | return 0; | |
567 | } | |
568 | ||
569 | static inline int unregister_module_notifier(struct notifier_block * nb) | |
570 | { | |
571 | return 0; | |
572 | } | |
573 | ||
574 | #define module_put_and_exit(code) do_exit(code) | |
575 | ||
576 | static inline void print_modules(void) | |
577 | { | |
578 | } | |
579 | ||
1387d0d8 | 580 | static inline void module_update_markers(void) |
8256e47c MD |
581 | { |
582 | } | |
583 | ||
97e1c18e MD |
584 | static inline void module_update_tracepoints(void) |
585 | { | |
586 | } | |
587 | ||
588 | static inline int module_get_iter_tracepoints(struct tracepoint_iter *iter) | |
589 | { | |
590 | return 0; | |
591 | } | |
592 | ||
ef665c1a RD |
593 | #endif /* CONFIG_MODULES */ |
594 | ||
1da177e4 | 595 | struct device_driver; |
ef665c1a | 596 | #ifdef CONFIG_SYSFS |
1da177e4 LT |
597 | struct module; |
598 | ||
7405c1e1 GKH |
599 | extern struct kset *module_kset; |
600 | extern struct kobj_type module_ktype; | |
601 | extern int module_sysfs_initialized; | |
ef665c1a RD |
602 | |
603 | int mod_sysfs_init(struct module *mod); | |
604 | int mod_sysfs_setup(struct module *mod, | |
605 | struct kernel_param *kparam, | |
606 | unsigned int num_params); | |
607 | int module_add_modinfo_attrs(struct module *mod); | |
608 | void module_remove_modinfo_attrs(struct module *mod); | |
609 | ||
610 | #else /* !CONFIG_SYSFS */ | |
611 | ||
612 | static inline int mod_sysfs_init(struct module *mod) | |
1da177e4 | 613 | { |
ef665c1a | 614 | return 0; |
1da177e4 LT |
615 | } |
616 | ||
ef665c1a RD |
617 | static inline int mod_sysfs_setup(struct module *mod, |
618 | struct kernel_param *kparam, | |
619 | unsigned int num_params) | |
1da177e4 | 620 | { |
ef665c1a | 621 | return 0; |
1da177e4 LT |
622 | } |
623 | ||
ef665c1a RD |
624 | static inline int module_add_modinfo_attrs(struct module *mod) |
625 | { | |
626 | return 0; | |
627 | } | |
628 | ||
629 | static inline void module_remove_modinfo_attrs(struct module *mod) | |
630 | { } | |
631 | ||
632 | #endif /* CONFIG_SYSFS */ | |
633 | ||
1da177e4 LT |
634 | #define symbol_request(x) try_then_request_module(symbol_get(x), "symbol:" #x) |
635 | ||
636 | /* BELOW HERE ALL THESE ARE OBSOLETE AND WILL VANISH */ | |
637 | ||
1da177e4 LT |
638 | #define __MODULE_STRING(x) __stringify(x) |
639 | ||
1da177e4 | 640 | #endif /* _LINUX_MODULE_H */ |