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> | |
18 | #include <asm/local.h> | |
19 | ||
20 | #include <asm/module.h> | |
21 | ||
22 | /* Not Yet Implemented */ | |
23 | #define MODULE_SUPPORTED_DEVICE(name) | |
24 | ||
25 | /* v850 toolchain uses a `_' prefix for all user symbols */ | |
26 | #ifndef MODULE_SYMBOL_PREFIX | |
27 | #define MODULE_SYMBOL_PREFIX "" | |
28 | #endif | |
29 | ||
30 | #define MODULE_NAME_LEN (64 - sizeof(unsigned long)) | |
31 | ||
32 | struct kernel_symbol | |
33 | { | |
34 | unsigned long value; | |
35 | const char *name; | |
36 | }; | |
37 | ||
38 | struct modversion_info | |
39 | { | |
40 | unsigned long crc; | |
41 | char name[MODULE_NAME_LEN]; | |
42 | }; | |
43 | ||
44 | struct module; | |
45 | ||
46 | struct module_attribute { | |
47 | struct attribute attr; | |
48 | ssize_t (*show)(struct module_attribute *, struct module *, char *); | |
49 | ssize_t (*store)(struct module_attribute *, struct module *, | |
50 | const char *, size_t count); | |
c988d2b2 MD |
51 | void (*setup)(struct module *, const char *); |
52 | int (*test)(struct module *); | |
53 | void (*free)(struct module *); | |
1da177e4 LT |
54 | }; |
55 | ||
56 | struct module_kobject | |
57 | { | |
58 | struct kobject kobj; | |
59 | struct module *mod; | |
f30c53a8 | 60 | struct kobject *drivers_dir; |
1da177e4 LT |
61 | }; |
62 | ||
63 | /* These are either module local, or the kernel's dummy ones. */ | |
64 | extern int init_module(void); | |
65 | extern void cleanup_module(void); | |
66 | ||
67 | /* Archs provide a method of finding the correct exception table. */ | |
68 | struct exception_table_entry; | |
69 | ||
70 | const struct exception_table_entry * | |
71 | search_extable(const struct exception_table_entry *first, | |
72 | const struct exception_table_entry *last, | |
73 | unsigned long value); | |
74 | void sort_extable(struct exception_table_entry *start, | |
75 | struct exception_table_entry *finish); | |
76 | void sort_main_extable(void); | |
77 | ||
1da177e4 LT |
78 | #ifdef MODULE |
79 | #define MODULE_GENERIC_TABLE(gtype,name) \ | |
80 | extern const struct gtype##_id __mod_##gtype##_table \ | |
81 | __attribute__ ((unused, alias(__stringify(name)))) | |
82 | ||
83 | extern struct module __this_module; | |
84 | #define THIS_MODULE (&__this_module) | |
85 | #else /* !MODULE */ | |
86 | #define MODULE_GENERIC_TABLE(gtype,name) | |
87 | #define THIS_MODULE ((struct module *)0) | |
88 | #endif | |
89 | ||
90 | /* Generic info of form tag = "info" */ | |
91 | #define MODULE_INFO(tag, info) __MODULE_INFO(tag, tag, info) | |
92 | ||
93 | /* For userspace: you can also call me... */ | |
94 | #define MODULE_ALIAS(_alias) MODULE_INFO(alias, _alias) | |
95 | ||
96 | /* | |
97 | * The following license idents are currently accepted as indicating free | |
98 | * software modules | |
99 | * | |
100 | * "GPL" [GNU Public License v2 or later] | |
101 | * "GPL v2" [GNU Public License v2] | |
102 | * "GPL and additional rights" [GNU Public License v2 rights and more] | |
103 | * "Dual BSD/GPL" [GNU Public License v2 | |
104 | * or BSD license choice] | |
8d27e908 XVP |
105 | * "Dual MIT/GPL" [GNU Public License v2 |
106 | * or MIT license choice] | |
1da177e4 LT |
107 | * "Dual MPL/GPL" [GNU Public License v2 |
108 | * or Mozilla license choice] | |
109 | * | |
110 | * The following other idents are available | |
111 | * | |
112 | * "Proprietary" [Non free products] | |
113 | * | |
114 | * There are dual licensed components, but when running with Linux it is the | |
115 | * GPL that is relevant so this is a non issue. Similarly LGPL linked with GPL | |
116 | * is a GPL combined work. | |
117 | * | |
118 | * This exists for several reasons | |
119 | * 1. So modinfo can show license info for users wanting to vet their setup | |
120 | * is free | |
121 | * 2. So the community can ignore bug reports including proprietary modules | |
122 | * 3. So vendors can do likewise based on their own policies | |
123 | */ | |
124 | #define MODULE_LICENSE(_license) MODULE_INFO(license, _license) | |
125 | ||
108f39a1 | 126 | /* Author, ideally of form NAME[, NAME]*[ and NAME] */ |
1da177e4 LT |
127 | #define MODULE_AUTHOR(_author) MODULE_INFO(author, _author) |
128 | ||
129 | /* What your module does. */ | |
130 | #define MODULE_DESCRIPTION(_description) MODULE_INFO(description, _description) | |
131 | ||
132 | /* One for each parameter, describing how to use it. Some files do | |
133 | multiple of these per line, so can't just use MODULE_INFO. */ | |
134 | #define MODULE_PARM_DESC(_parm, desc) \ | |
135 | __MODULE_INFO(parm, _parm, #_parm ":" desc) | |
136 | ||
137 | #define MODULE_DEVICE_TABLE(type,name) \ | |
138 | MODULE_GENERIC_TABLE(type##_device,name) | |
139 | ||
140 | /* Version of form [<epoch>:]<version>[-<extra-version>]. | |
141 | Or for CVS/RCS ID version, everything but the number is stripped. | |
142 | <epoch>: A (small) unsigned integer which allows you to start versions | |
143 | anew. If not mentioned, it's zero. eg. "2:1.0" is after | |
144 | "1:2.0". | |
145 | <version>: The <version> may contain only alphanumerics and the | |
146 | character `.'. Ordered by numeric sort for numeric parts, | |
147 | ascii sort for ascii parts (as per RPM or DEB algorithm). | |
148 | <extraversion>: Like <version>, but inserted for local | |
149 | customizations, eg "rh3" or "rusty1". | |
150 | ||
151 | Using this automatically adds a checksum of the .c files and the | |
152 | local headers in "srcversion". | |
153 | */ | |
154 | #define MODULE_VERSION(_version) MODULE_INFO(version, _version) | |
155 | ||
187afbed JM |
156 | /* Optional firmware file (or files) needed by the module |
157 | * format is simply firmware file name. Multiple firmware | |
158 | * files require multiple MODULE_FIRMWARE() specifiers */ | |
159 | #define MODULE_FIRMWARE(_firmware) MODULE_INFO(firmware, _firmware) | |
160 | ||
1da177e4 LT |
161 | /* Given an address, look for it in the exception tables */ |
162 | const struct exception_table_entry *search_exception_tables(unsigned long add); | |
163 | ||
164 | struct notifier_block; | |
165 | ||
166 | #ifdef CONFIG_MODULES | |
167 | ||
168 | /* Get/put a kernel symbol (calls must be symmetric) */ | |
169 | void *__symbol_get(const char *symbol); | |
170 | void *__symbol_get_gpl(const char *symbol); | |
171 | #define symbol_get(x) ((typeof(&x))(__symbol_get(MODULE_SYMBOL_PREFIX #x))) | |
172 | ||
173 | #ifndef __GENKSYMS__ | |
174 | #ifdef CONFIG_MODVERSIONS | |
175 | /* Mark the CRC weak since genksyms apparently decides not to | |
176 | * generate a checksums for some symbols */ | |
177 | #define __CRC_SYMBOL(sym, sec) \ | |
178 | extern void *__crc_##sym __attribute__((weak)); \ | |
179 | static const unsigned long __kcrctab_##sym \ | |
180 | __attribute_used__ \ | |
181 | __attribute__((section("__kcrctab" sec), unused)) \ | |
182 | = (unsigned long) &__crc_##sym; | |
183 | #else | |
184 | #define __CRC_SYMBOL(sym, sec) | |
185 | #endif | |
186 | ||
187 | /* For every exported symbol, place a struct in the __ksymtab section */ | |
188 | #define __EXPORT_SYMBOL(sym, sec) \ | |
a1a8feed | 189 | extern typeof(sym) sym; \ |
1da177e4 LT |
190 | __CRC_SYMBOL(sym, sec) \ |
191 | static const char __kstrtab_##sym[] \ | |
192 | __attribute__((section("__ksymtab_strings"))) \ | |
193 | = MODULE_SYMBOL_PREFIX #sym; \ | |
194 | static const struct kernel_symbol __ksymtab_##sym \ | |
195 | __attribute_used__ \ | |
196 | __attribute__((section("__ksymtab" sec), unused)) \ | |
197 | = { (unsigned long)&sym, __kstrtab_##sym } | |
198 | ||
199 | #define EXPORT_SYMBOL(sym) \ | |
200 | __EXPORT_SYMBOL(sym, "") | |
201 | ||
202 | #define EXPORT_SYMBOL_GPL(sym) \ | |
203 | __EXPORT_SYMBOL(sym, "_gpl") | |
204 | ||
9f28bb7e GKH |
205 | #define EXPORT_SYMBOL_GPL_FUTURE(sym) \ |
206 | __EXPORT_SYMBOL(sym, "_gpl_future") | |
207 | ||
f71d20e9 AV |
208 | |
209 | #ifdef CONFIG_UNUSED_SYMBOLS | |
210 | #define EXPORT_UNUSED_SYMBOL(sym) __EXPORT_SYMBOL(sym, "_unused") | |
211 | #define EXPORT_UNUSED_SYMBOL_GPL(sym) __EXPORT_SYMBOL(sym, "_unused_gpl") | |
212 | #else | |
213 | #define EXPORT_UNUSED_SYMBOL(sym) | |
214 | #define EXPORT_UNUSED_SYMBOL_GPL(sym) | |
215 | #endif | |
216 | ||
1da177e4 LT |
217 | #endif |
218 | ||
219 | struct module_ref | |
220 | { | |
221 | local_t count; | |
222 | } ____cacheline_aligned; | |
223 | ||
224 | enum module_state | |
225 | { | |
226 | MODULE_STATE_LIVE, | |
227 | MODULE_STATE_COMING, | |
228 | MODULE_STATE_GOING, | |
229 | }; | |
230 | ||
231 | /* Similar stuff for section attributes. */ | |
1da177e4 LT |
232 | struct module_sect_attr |
233 | { | |
234 | struct module_attribute mattr; | |
04b1db9f | 235 | char *name; |
1da177e4 LT |
236 | unsigned long address; |
237 | }; | |
238 | ||
239 | struct module_sect_attrs | |
240 | { | |
241 | struct attribute_group grp; | |
04b1db9f | 242 | int nsections; |
1da177e4 LT |
243 | struct module_sect_attr attrs[0]; |
244 | }; | |
245 | ||
246 | struct module_param_attrs; | |
247 | ||
248 | struct module | |
249 | { | |
250 | enum module_state state; | |
251 | ||
252 | /* Member of list of modules */ | |
253 | struct list_head list; | |
254 | ||
255 | /* Unique handle for this module */ | |
256 | char name[MODULE_NAME_LEN]; | |
257 | ||
258 | /* Sysfs stuff. */ | |
259 | struct module_kobject mkobj; | |
260 | struct module_param_attrs *param_attrs; | |
03e88ae1 | 261 | struct module_attribute *modinfo_attrs; |
c988d2b2 MD |
262 | const char *version; |
263 | const char *srcversion; | |
270a6c4c | 264 | struct kobject *holders_dir; |
1da177e4 LT |
265 | |
266 | /* Exported symbols */ | |
267 | const struct kernel_symbol *syms; | |
268 | unsigned int num_syms; | |
269 | const unsigned long *crcs; | |
270 | ||
271 | /* GPL-only exported symbols. */ | |
272 | const struct kernel_symbol *gpl_syms; | |
273 | unsigned int num_gpl_syms; | |
274 | const unsigned long *gpl_crcs; | |
275 | ||
f71d20e9 AV |
276 | /* unused exported symbols. */ |
277 | const struct kernel_symbol *unused_syms; | |
278 | unsigned int num_unused_syms; | |
279 | const unsigned long *unused_crcs; | |
280 | /* GPL-only, unused exported symbols. */ | |
281 | const struct kernel_symbol *unused_gpl_syms; | |
282 | unsigned int num_unused_gpl_syms; | |
283 | const unsigned long *unused_gpl_crcs; | |
284 | ||
9f28bb7e GKH |
285 | /* symbols that will be GPL-only in the near future. */ |
286 | const struct kernel_symbol *gpl_future_syms; | |
287 | unsigned int num_gpl_future_syms; | |
288 | const unsigned long *gpl_future_crcs; | |
289 | ||
1da177e4 LT |
290 | /* Exception table */ |
291 | unsigned int num_exentries; | |
292 | const struct exception_table_entry *extable; | |
293 | ||
294 | /* Startup function. */ | |
295 | int (*init)(void); | |
296 | ||
297 | /* If this is non-NULL, vfree after init() returns */ | |
298 | void *module_init; | |
299 | ||
300 | /* Here is the actual code + data, vfree'd on unload. */ | |
301 | void *module_core; | |
302 | ||
303 | /* Here are the sizes of the init and core sections */ | |
304 | unsigned long init_size, core_size; | |
305 | ||
306 | /* The size of the executable code in each section. */ | |
307 | unsigned long init_text_size, core_text_size; | |
308 | ||
4552d5dc JB |
309 | /* The handle returned from unwind_add_table. */ |
310 | void *unwind_info; | |
311 | ||
1da177e4 LT |
312 | /* Arch-specific module values */ |
313 | struct mod_arch_specific arch; | |
314 | ||
2bc2d61a RD |
315 | unsigned int taints; /* same bits as kernel:tainted */ |
316 | ||
7664c5a1 JF |
317 | #ifdef CONFIG_GENERIC_BUG |
318 | /* Support for BUG */ | |
319 | struct list_head bug_list; | |
320 | struct bug_entry *bug_table; | |
321 | unsigned num_bugs; | |
322 | #endif | |
323 | ||
1da177e4 LT |
324 | #ifdef CONFIG_MODULE_UNLOAD |
325 | /* Reference counts */ | |
326 | struct module_ref ref[NR_CPUS]; | |
327 | ||
328 | /* What modules depend on me? */ | |
329 | struct list_head modules_which_use_me; | |
330 | ||
331 | /* Who is waiting for us to be unloaded */ | |
332 | struct task_struct *waiter; | |
333 | ||
334 | /* Destruction function. */ | |
335 | void (*exit)(void); | |
336 | #endif | |
337 | ||
338 | #ifdef CONFIG_KALLSYMS | |
339 | /* We keep the symbol and string tables for kallsyms. */ | |
340 | Elf_Sym *symtab; | |
341 | unsigned long num_symtab; | |
342 | char *strtab; | |
343 | ||
344 | /* Section attributes */ | |
345 | struct module_sect_attrs *sect_attrs; | |
346 | #endif | |
347 | ||
348 | /* Per-cpu data. */ | |
349 | void *percpu; | |
350 | ||
351 | /* The command line arguments (may be mangled). People like | |
352 | keeping pointers to this stuff */ | |
353 | char *args; | |
354 | }; | |
e61a1c1c RZ |
355 | #ifndef MODULE_ARCH_INIT |
356 | #define MODULE_ARCH_INIT {} | |
357 | #endif | |
1da177e4 LT |
358 | |
359 | /* FIXME: It'd be nice to isolate modules during init, too, so they | |
360 | aren't used before they (may) fail. But presently too much code | |
361 | (IDE & SCSI) require entry into the module during init.*/ | |
362 | static inline int module_is_live(struct module *mod) | |
363 | { | |
364 | return mod->state != MODULE_STATE_GOING; | |
365 | } | |
366 | ||
367 | /* Is this address in a module? (second is with no locks, for oops) */ | |
368 | struct module *module_text_address(unsigned long addr); | |
369 | struct module *__module_text_address(unsigned long addr); | |
4d435f9d | 370 | int is_module_address(unsigned long addr); |
1da177e4 | 371 | |
ea07890a | 372 | /* Returns 0 and fills in value, defined and namebuf, or -ERANGE if |
1da177e4 | 373 | symnum out of range. */ |
ea07890a AD |
374 | int module_get_kallsym(unsigned int symnum, unsigned long *value, char *type, |
375 | char *name, char *module_name, int *exported); | |
1da177e4 LT |
376 | |
377 | /* Look for this name: can be of form module:name. */ | |
378 | unsigned long module_kallsyms_lookup_name(const char *name); | |
379 | ||
1da177e4 LT |
380 | extern void __module_put_and_exit(struct module *mod, long code) |
381 | __attribute__((noreturn)); | |
382 | #define module_put_and_exit(code) __module_put_and_exit(THIS_MODULE, code); | |
383 | ||
384 | #ifdef CONFIG_MODULE_UNLOAD | |
385 | unsigned int module_refcount(struct module *mod); | |
386 | void __symbol_put(const char *symbol); | |
387 | #define symbol_put(x) __symbol_put(MODULE_SYMBOL_PREFIX #x) | |
388 | void symbol_put_addr(void *addr); | |
389 | ||
390 | /* Sometimes we know we already have a refcount, and it's easier not | |
391 | to handle the error case (which only happens with rmmod --wait). */ | |
392 | static inline void __module_get(struct module *module) | |
393 | { | |
394 | if (module) { | |
395 | BUG_ON(module_refcount(module) == 0); | |
396 | local_inc(&module->ref[get_cpu()].count); | |
397 | put_cpu(); | |
398 | } | |
399 | } | |
400 | ||
401 | static inline int try_module_get(struct module *module) | |
402 | { | |
403 | int ret = 1; | |
404 | ||
405 | if (module) { | |
406 | unsigned int cpu = get_cpu(); | |
407 | if (likely(module_is_live(module))) | |
408 | local_inc(&module->ref[cpu].count); | |
409 | else | |
410 | ret = 0; | |
411 | put_cpu(); | |
412 | } | |
413 | return ret; | |
414 | } | |
415 | ||
f6a57033 | 416 | extern void module_put(struct module *module); |
1da177e4 LT |
417 | |
418 | #else /*!CONFIG_MODULE_UNLOAD*/ | |
419 | static inline int try_module_get(struct module *module) | |
420 | { | |
421 | return !module || module_is_live(module); | |
422 | } | |
423 | static inline void module_put(struct module *module) | |
424 | { | |
425 | } | |
426 | static inline void __module_get(struct module *module) | |
427 | { | |
428 | } | |
429 | #define symbol_put(x) do { } while(0) | |
430 | #define symbol_put_addr(p) do { } while(0) | |
431 | ||
432 | #endif /* CONFIG_MODULE_UNLOAD */ | |
433 | ||
434 | /* This is a #define so the string doesn't get put in every .o file */ | |
435 | #define module_name(mod) \ | |
436 | ({ \ | |
437 | struct module *__mod = (mod); \ | |
438 | __mod ? __mod->name : "kernel"; \ | |
439 | }) | |
440 | ||
1da177e4 LT |
441 | /* For kallsyms to ask for address resolution. NULL means not found. */ |
442 | const char *module_address_lookup(unsigned long addr, | |
443 | unsigned long *symbolsize, | |
444 | unsigned long *offset, | |
445 | char **modname); | |
9d65cb4a | 446 | int lookup_module_symbol_name(unsigned long addr, char *symname); |
a5c43dae | 447 | int lookup_module_symbol_attrs(unsigned long addr, unsigned long *size, unsigned long *offset, char *modname, char *name); |
1da177e4 LT |
448 | |
449 | /* For extable.c to search modules' exception tables. */ | |
450 | const struct exception_table_entry *search_module_extables(unsigned long addr); | |
451 | ||
452 | int register_module_notifier(struct notifier_block * nb); | |
453 | int unregister_module_notifier(struct notifier_block * nb); | |
454 | ||
455 | extern void print_modules(void); | |
456 | ||
1da177e4 LT |
457 | #else /* !CONFIG_MODULES... */ |
458 | #define EXPORT_SYMBOL(sym) | |
459 | #define EXPORT_SYMBOL_GPL(sym) | |
9f28bb7e | 460 | #define EXPORT_SYMBOL_GPL_FUTURE(sym) |
f71d20e9 AV |
461 | #define EXPORT_UNUSED_SYMBOL(sym) |
462 | #define EXPORT_UNUSED_SYMBOL_GPL(sym) | |
1da177e4 LT |
463 | |
464 | /* Given an address, look for it in the exception tables. */ | |
465 | static inline const struct exception_table_entry * | |
466 | search_module_extables(unsigned long addr) | |
467 | { | |
468 | return NULL; | |
469 | } | |
470 | ||
471 | /* Is this address in a module? */ | |
472 | static inline struct module *module_text_address(unsigned long addr) | |
473 | { | |
474 | return NULL; | |
475 | } | |
476 | ||
477 | /* Is this address in a module? (don't take a lock, we're oopsing) */ | |
478 | static inline struct module *__module_text_address(unsigned long addr) | |
479 | { | |
480 | return NULL; | |
481 | } | |
482 | ||
4d435f9d IM |
483 | static inline int is_module_address(unsigned long addr) |
484 | { | |
485 | return 0; | |
486 | } | |
487 | ||
1da177e4 LT |
488 | /* Get/put a kernel symbol (calls should be symmetric) */ |
489 | #define symbol_get(x) ({ extern typeof(x) x __attribute__((weak)); &(x); }) | |
490 | #define symbol_put(x) do { } while(0) | |
491 | #define symbol_put_addr(x) do { } while(0) | |
492 | ||
493 | static inline void __module_get(struct module *module) | |
494 | { | |
495 | } | |
496 | ||
497 | static inline int try_module_get(struct module *module) | |
498 | { | |
499 | return 1; | |
500 | } | |
501 | ||
502 | static inline void module_put(struct module *module) | |
503 | { | |
504 | } | |
505 | ||
506 | #define module_name(mod) "kernel" | |
507 | ||
1da177e4 LT |
508 | /* For kallsyms to ask for address resolution. NULL means not found. */ |
509 | static inline const char *module_address_lookup(unsigned long addr, | |
510 | unsigned long *symbolsize, | |
511 | unsigned long *offset, | |
512 | char **modname) | |
513 | { | |
514 | return NULL; | |
515 | } | |
516 | ||
9d65cb4a AD |
517 | static inline int lookup_module_symbol_name(unsigned long addr, char *symname) |
518 | { | |
519 | return -ERANGE; | |
520 | } | |
521 | ||
a5c43dae AD |
522 | static inline int lookup_module_symbol_attrs(unsigned long addr, unsigned long *size, unsigned long *offset, char *modname, char *name) |
523 | { | |
524 | return -ERANGE; | |
525 | } | |
526 | ||
ea07890a AD |
527 | static inline int module_get_kallsym(unsigned int symnum, unsigned long *value, |
528 | char *type, char *name, | |
529 | char *module_name, int *exported) | |
1da177e4 | 530 | { |
ea07890a | 531 | return -ERANGE; |
1da177e4 LT |
532 | } |
533 | ||
534 | static inline unsigned long module_kallsyms_lookup_name(const char *name) | |
535 | { | |
536 | return 0; | |
537 | } | |
538 | ||
1da177e4 LT |
539 | static inline int register_module_notifier(struct notifier_block * nb) |
540 | { | |
541 | /* no events will happen anyway, so this can always succeed */ | |
542 | return 0; | |
543 | } | |
544 | ||
545 | static inline int unregister_module_notifier(struct notifier_block * nb) | |
546 | { | |
547 | return 0; | |
548 | } | |
549 | ||
550 | #define module_put_and_exit(code) do_exit(code) | |
551 | ||
552 | static inline void print_modules(void) | |
553 | { | |
554 | } | |
555 | ||
ef665c1a RD |
556 | #endif /* CONFIG_MODULES */ |
557 | ||
1da177e4 | 558 | struct device_driver; |
ef665c1a | 559 | #ifdef CONFIG_SYSFS |
1da177e4 LT |
560 | struct module; |
561 | ||
823bccfc | 562 | extern struct kset module_subsys; |
ef665c1a RD |
563 | |
564 | int mod_sysfs_init(struct module *mod); | |
565 | int mod_sysfs_setup(struct module *mod, | |
566 | struct kernel_param *kparam, | |
567 | unsigned int num_params); | |
568 | int module_add_modinfo_attrs(struct module *mod); | |
569 | void module_remove_modinfo_attrs(struct module *mod); | |
570 | ||
571 | #else /* !CONFIG_SYSFS */ | |
572 | ||
573 | static inline int mod_sysfs_init(struct module *mod) | |
1da177e4 | 574 | { |
ef665c1a | 575 | return 0; |
1da177e4 LT |
576 | } |
577 | ||
ef665c1a RD |
578 | static inline int mod_sysfs_setup(struct module *mod, |
579 | struct kernel_param *kparam, | |
580 | unsigned int num_params) | |
1da177e4 | 581 | { |
ef665c1a | 582 | return 0; |
1da177e4 LT |
583 | } |
584 | ||
ef665c1a RD |
585 | static inline int module_add_modinfo_attrs(struct module *mod) |
586 | { | |
587 | return 0; | |
588 | } | |
589 | ||
590 | static inline void module_remove_modinfo_attrs(struct module *mod) | |
591 | { } | |
592 | ||
593 | #endif /* CONFIG_SYSFS */ | |
594 | ||
595 | #if defined(CONFIG_SYSFS) && defined(CONFIG_MODULES) | |
596 | ||
597 | void module_add_driver(struct module *mod, struct device_driver *drv); | |
598 | void module_remove_driver(struct device_driver *drv); | |
599 | ||
600 | #else /* not both CONFIG_SYSFS && CONFIG_MODULES */ | |
601 | ||
602 | static inline void module_add_driver(struct module *mod, struct device_driver *drv) | |
603 | { } | |
604 | ||
605 | static inline void module_remove_driver(struct device_driver *drv) | |
606 | { } | |
607 | ||
608 | #endif | |
1da177e4 LT |
609 | |
610 | #define symbol_request(x) try_then_request_module(symbol_get(x), "symbol:" #x) | |
611 | ||
612 | /* BELOW HERE ALL THESE ARE OBSOLETE AND WILL VANISH */ | |
613 | ||
1da177e4 LT |
614 | #define __MODULE_STRING(x) __stringify(x) |
615 | ||
1da177e4 | 616 | #endif /* _LINUX_MODULE_H */ |