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/spinlock.h> |
10 | #include <linux/list.h> | |
11 | #include <linux/stat.h> | |
12 | #include <linux/compiler.h> | |
13 | #include <linux/cache.h> | |
14 | #include <linux/kmod.h> | |
15 | #include <linux/elf.h> | |
16 | #include <linux/stringify.h> | |
17 | #include <linux/kobject.h> | |
18 | #include <linux/moduleparam.h> | |
19 | #include <asm/local.h> | |
20 | ||
21 | #include <asm/module.h> | |
22 | ||
23 | /* Not Yet Implemented */ | |
24 | #define MODULE_SUPPORTED_DEVICE(name) | |
25 | ||
26 | /* v850 toolchain uses a `_' prefix for all user symbols */ | |
27 | #ifndef MODULE_SYMBOL_PREFIX | |
28 | #define MODULE_SYMBOL_PREFIX "" | |
29 | #endif | |
30 | ||
31 | #define MODULE_NAME_LEN (64 - sizeof(unsigned long)) | |
32 | ||
33 | struct kernel_symbol | |
34 | { | |
35 | unsigned long value; | |
36 | const char *name; | |
37 | }; | |
38 | ||
39 | struct modversion_info | |
40 | { | |
41 | unsigned long crc; | |
42 | char name[MODULE_NAME_LEN]; | |
43 | }; | |
44 | ||
45 | struct module; | |
46 | ||
47 | struct module_attribute { | |
48 | struct attribute attr; | |
49 | ssize_t (*show)(struct module_attribute *, struct module *, char *); | |
50 | ssize_t (*store)(struct module_attribute *, struct module *, | |
51 | const char *, size_t count); | |
c988d2b2 MD |
52 | void (*setup)(struct module *, const char *); |
53 | int (*test)(struct module *); | |
54 | void (*free)(struct module *); | |
1da177e4 LT |
55 | }; |
56 | ||
57 | struct module_kobject | |
58 | { | |
59 | struct kobject kobj; | |
60 | struct module *mod; | |
f30c53a8 | 61 | struct kobject *drivers_dir; |
1da177e4 LT |
62 | }; |
63 | ||
64 | /* These are either module local, or the kernel's dummy ones. */ | |
65 | extern int init_module(void); | |
66 | extern void cleanup_module(void); | |
67 | ||
68 | /* Archs provide a method of finding the correct exception table. */ | |
69 | struct exception_table_entry; | |
70 | ||
71 | const struct exception_table_entry * | |
72 | search_extable(const struct exception_table_entry *first, | |
73 | const struct exception_table_entry *last, | |
74 | unsigned long value); | |
75 | void sort_extable(struct exception_table_entry *start, | |
76 | struct exception_table_entry *finish); | |
77 | void sort_main_extable(void); | |
78 | ||
1da177e4 LT |
79 | #ifdef MODULE |
80 | #define MODULE_GENERIC_TABLE(gtype,name) \ | |
81 | extern const struct gtype##_id __mod_##gtype##_table \ | |
82 | __attribute__ ((unused, alias(__stringify(name)))) | |
83 | ||
84 | extern struct module __this_module; | |
85 | #define THIS_MODULE (&__this_module) | |
86 | #else /* !MODULE */ | |
87 | #define MODULE_GENERIC_TABLE(gtype,name) | |
88 | #define THIS_MODULE ((struct module *)0) | |
89 | #endif | |
90 | ||
91 | /* Generic info of form tag = "info" */ | |
92 | #define MODULE_INFO(tag, info) __MODULE_INFO(tag, tag, info) | |
93 | ||
94 | /* For userspace: you can also call me... */ | |
95 | #define MODULE_ALIAS(_alias) MODULE_INFO(alias, _alias) | |
96 | ||
97 | /* | |
98 | * The following license idents are currently accepted as indicating free | |
99 | * software modules | |
100 | * | |
101 | * "GPL" [GNU Public License v2 or later] | |
102 | * "GPL v2" [GNU Public License v2] | |
103 | * "GPL and additional rights" [GNU Public License v2 rights and more] | |
104 | * "Dual BSD/GPL" [GNU Public License v2 | |
105 | * or BSD license choice] | |
8d27e908 XVP |
106 | * "Dual MIT/GPL" [GNU Public License v2 |
107 | * or MIT license choice] | |
1da177e4 LT |
108 | * "Dual MPL/GPL" [GNU Public License v2 |
109 | * or Mozilla license choice] | |
110 | * | |
111 | * The following other idents are available | |
112 | * | |
113 | * "Proprietary" [Non free products] | |
114 | * | |
115 | * There are dual licensed components, but when running with Linux it is the | |
116 | * GPL that is relevant so this is a non issue. Similarly LGPL linked with GPL | |
117 | * is a GPL combined work. | |
118 | * | |
119 | * This exists for several reasons | |
120 | * 1. So modinfo can show license info for users wanting to vet their setup | |
121 | * is free | |
122 | * 2. So the community can ignore bug reports including proprietary modules | |
123 | * 3. So vendors can do likewise based on their own policies | |
124 | */ | |
125 | #define MODULE_LICENSE(_license) MODULE_INFO(license, _license) | |
126 | ||
127 | /* Author, ideally of form NAME <EMAIL>[, NAME <EMAIL>]*[ and NAME <EMAIL>] */ | |
128 | #define MODULE_AUTHOR(_author) MODULE_INFO(author, _author) | |
129 | ||
130 | /* What your module does. */ | |
131 | #define MODULE_DESCRIPTION(_description) MODULE_INFO(description, _description) | |
132 | ||
133 | /* One for each parameter, describing how to use it. Some files do | |
134 | multiple of these per line, so can't just use MODULE_INFO. */ | |
135 | #define MODULE_PARM_DESC(_parm, desc) \ | |
136 | __MODULE_INFO(parm, _parm, #_parm ":" desc) | |
137 | ||
138 | #define MODULE_DEVICE_TABLE(type,name) \ | |
139 | MODULE_GENERIC_TABLE(type##_device,name) | |
140 | ||
141 | /* Version of form [<epoch>:]<version>[-<extra-version>]. | |
142 | Or for CVS/RCS ID version, everything but the number is stripped. | |
143 | <epoch>: A (small) unsigned integer which allows you to start versions | |
144 | anew. If not mentioned, it's zero. eg. "2:1.0" is after | |
145 | "1:2.0". | |
146 | <version>: The <version> may contain only alphanumerics and the | |
147 | character `.'. Ordered by numeric sort for numeric parts, | |
148 | ascii sort for ascii parts (as per RPM or DEB algorithm). | |
149 | <extraversion>: Like <version>, but inserted for local | |
150 | customizations, eg "rh3" or "rusty1". | |
151 | ||
152 | Using this automatically adds a checksum of the .c files and the | |
153 | local headers in "srcversion". | |
154 | */ | |
155 | #define MODULE_VERSION(_version) MODULE_INFO(version, _version) | |
156 | ||
187afbed JM |
157 | /* Optional firmware file (or files) needed by the module |
158 | * format is simply firmware file name. Multiple firmware | |
159 | * files require multiple MODULE_FIRMWARE() specifiers */ | |
160 | #define MODULE_FIRMWARE(_firmware) MODULE_INFO(firmware, _firmware) | |
161 | ||
1da177e4 LT |
162 | /* Given an address, look for it in the exception tables */ |
163 | const struct exception_table_entry *search_exception_tables(unsigned long add); | |
164 | ||
165 | struct notifier_block; | |
166 | ||
167 | #ifdef CONFIG_MODULES | |
168 | ||
169 | /* Get/put a kernel symbol (calls must be symmetric) */ | |
170 | void *__symbol_get(const char *symbol); | |
171 | void *__symbol_get_gpl(const char *symbol); | |
172 | #define symbol_get(x) ((typeof(&x))(__symbol_get(MODULE_SYMBOL_PREFIX #x))) | |
173 | ||
174 | #ifndef __GENKSYMS__ | |
175 | #ifdef CONFIG_MODVERSIONS | |
176 | /* Mark the CRC weak since genksyms apparently decides not to | |
177 | * generate a checksums for some symbols */ | |
178 | #define __CRC_SYMBOL(sym, sec) \ | |
179 | extern void *__crc_##sym __attribute__((weak)); \ | |
180 | static const unsigned long __kcrctab_##sym \ | |
181 | __attribute_used__ \ | |
182 | __attribute__((section("__kcrctab" sec), unused)) \ | |
183 | = (unsigned long) &__crc_##sym; | |
184 | #else | |
185 | #define __CRC_SYMBOL(sym, sec) | |
186 | #endif | |
187 | ||
188 | /* For every exported symbol, place a struct in the __ksymtab section */ | |
189 | #define __EXPORT_SYMBOL(sym, sec) \ | |
a1a8feed | 190 | extern typeof(sym) sym; \ |
1da177e4 LT |
191 | __CRC_SYMBOL(sym, sec) \ |
192 | static const char __kstrtab_##sym[] \ | |
193 | __attribute__((section("__ksymtab_strings"))) \ | |
194 | = MODULE_SYMBOL_PREFIX #sym; \ | |
195 | static const struct kernel_symbol __ksymtab_##sym \ | |
196 | __attribute_used__ \ | |
197 | __attribute__((section("__ksymtab" sec), unused)) \ | |
198 | = { (unsigned long)&sym, __kstrtab_##sym } | |
199 | ||
200 | #define EXPORT_SYMBOL(sym) \ | |
201 | __EXPORT_SYMBOL(sym, "") | |
202 | ||
203 | #define EXPORT_SYMBOL_GPL(sym) \ | |
204 | __EXPORT_SYMBOL(sym, "_gpl") | |
205 | ||
9f28bb7e GKH |
206 | #define EXPORT_SYMBOL_GPL_FUTURE(sym) \ |
207 | __EXPORT_SYMBOL(sym, "_gpl_future") | |
208 | ||
f71d20e9 AV |
209 | |
210 | #ifdef CONFIG_UNUSED_SYMBOLS | |
211 | #define EXPORT_UNUSED_SYMBOL(sym) __EXPORT_SYMBOL(sym, "_unused") | |
212 | #define EXPORT_UNUSED_SYMBOL_GPL(sym) __EXPORT_SYMBOL(sym, "_unused_gpl") | |
213 | #else | |
214 | #define EXPORT_UNUSED_SYMBOL(sym) | |
215 | #define EXPORT_UNUSED_SYMBOL_GPL(sym) | |
216 | #endif | |
217 | ||
1da177e4 LT |
218 | #endif |
219 | ||
220 | struct module_ref | |
221 | { | |
222 | local_t count; | |
223 | } ____cacheline_aligned; | |
224 | ||
225 | enum module_state | |
226 | { | |
227 | MODULE_STATE_LIVE, | |
228 | MODULE_STATE_COMING, | |
229 | MODULE_STATE_GOING, | |
230 | }; | |
231 | ||
232 | /* Similar stuff for section attributes. */ | |
1da177e4 LT |
233 | struct module_sect_attr |
234 | { | |
235 | struct module_attribute mattr; | |
04b1db9f | 236 | char *name; |
1da177e4 LT |
237 | unsigned long address; |
238 | }; | |
239 | ||
240 | struct module_sect_attrs | |
241 | { | |
242 | struct attribute_group grp; | |
04b1db9f | 243 | int nsections; |
1da177e4 LT |
244 | struct module_sect_attr attrs[0]; |
245 | }; | |
246 | ||
247 | struct module_param_attrs; | |
248 | ||
249 | struct module | |
250 | { | |
251 | enum module_state state; | |
252 | ||
253 | /* Member of list of modules */ | |
254 | struct list_head list; | |
255 | ||
256 | /* Unique handle for this module */ | |
257 | char name[MODULE_NAME_LEN]; | |
258 | ||
259 | /* Sysfs stuff. */ | |
260 | struct module_kobject mkobj; | |
261 | struct module_param_attrs *param_attrs; | |
03e88ae1 | 262 | struct module_attribute *modinfo_attrs; |
c988d2b2 MD |
263 | const char *version; |
264 | const char *srcversion; | |
270a6c4c | 265 | struct kobject *holders_dir; |
1da177e4 LT |
266 | |
267 | /* Exported symbols */ | |
268 | const struct kernel_symbol *syms; | |
269 | unsigned int num_syms; | |
270 | const unsigned long *crcs; | |
271 | ||
272 | /* GPL-only exported symbols. */ | |
273 | const struct kernel_symbol *gpl_syms; | |
274 | unsigned int num_gpl_syms; | |
275 | const unsigned long *gpl_crcs; | |
276 | ||
f71d20e9 AV |
277 | /* unused exported symbols. */ |
278 | const struct kernel_symbol *unused_syms; | |
279 | unsigned int num_unused_syms; | |
280 | const unsigned long *unused_crcs; | |
281 | /* GPL-only, unused exported symbols. */ | |
282 | const struct kernel_symbol *unused_gpl_syms; | |
283 | unsigned int num_unused_gpl_syms; | |
284 | const unsigned long *unused_gpl_crcs; | |
285 | ||
9f28bb7e GKH |
286 | /* symbols that will be GPL-only in the near future. */ |
287 | const struct kernel_symbol *gpl_future_syms; | |
288 | unsigned int num_gpl_future_syms; | |
289 | const unsigned long *gpl_future_crcs; | |
290 | ||
1da177e4 LT |
291 | /* Exception table */ |
292 | unsigned int num_exentries; | |
293 | const struct exception_table_entry *extable; | |
294 | ||
295 | /* Startup function. */ | |
296 | int (*init)(void); | |
297 | ||
298 | /* If this is non-NULL, vfree after init() returns */ | |
299 | void *module_init; | |
300 | ||
301 | /* Here is the actual code + data, vfree'd on unload. */ | |
302 | void *module_core; | |
303 | ||
304 | /* Here are the sizes of the init and core sections */ | |
305 | unsigned long init_size, core_size; | |
306 | ||
307 | /* The size of the executable code in each section. */ | |
308 | unsigned long init_text_size, core_text_size; | |
309 | ||
4552d5dc JB |
310 | /* The handle returned from unwind_add_table. */ |
311 | void *unwind_info; | |
312 | ||
1da177e4 LT |
313 | /* Arch-specific module values */ |
314 | struct mod_arch_specific arch; | |
315 | ||
316 | /* Am I unsafe to unload? */ | |
317 | int unsafe; | |
318 | ||
2bc2d61a RD |
319 | unsigned int taints; /* same bits as kernel:tainted */ |
320 | ||
7664c5a1 JF |
321 | #ifdef CONFIG_GENERIC_BUG |
322 | /* Support for BUG */ | |
323 | struct list_head bug_list; | |
324 | struct bug_entry *bug_table; | |
325 | unsigned num_bugs; | |
326 | #endif | |
327 | ||
1da177e4 LT |
328 | #ifdef CONFIG_MODULE_UNLOAD |
329 | /* Reference counts */ | |
330 | struct module_ref ref[NR_CPUS]; | |
331 | ||
332 | /* What modules depend on me? */ | |
333 | struct list_head modules_which_use_me; | |
334 | ||
335 | /* Who is waiting for us to be unloaded */ | |
336 | struct task_struct *waiter; | |
337 | ||
338 | /* Destruction function. */ | |
339 | void (*exit)(void); | |
340 | #endif | |
341 | ||
342 | #ifdef CONFIG_KALLSYMS | |
343 | /* We keep the symbol and string tables for kallsyms. */ | |
344 | Elf_Sym *symtab; | |
345 | unsigned long num_symtab; | |
346 | char *strtab; | |
347 | ||
348 | /* Section attributes */ | |
349 | struct module_sect_attrs *sect_attrs; | |
350 | #endif | |
351 | ||
352 | /* Per-cpu data. */ | |
353 | void *percpu; | |
354 | ||
355 | /* The command line arguments (may be mangled). People like | |
356 | keeping pointers to this stuff */ | |
357 | char *args; | |
358 | }; | |
359 | ||
360 | /* FIXME: It'd be nice to isolate modules during init, too, so they | |
361 | aren't used before they (may) fail. But presently too much code | |
362 | (IDE & SCSI) require entry into the module during init.*/ | |
363 | static inline int module_is_live(struct module *mod) | |
364 | { | |
365 | return mod->state != MODULE_STATE_GOING; | |
366 | } | |
367 | ||
368 | /* Is this address in a module? (second is with no locks, for oops) */ | |
369 | struct module *module_text_address(unsigned long addr); | |
370 | struct module *__module_text_address(unsigned long addr); | |
4d435f9d | 371 | int is_module_address(unsigned long addr); |
1da177e4 | 372 | |
ea07890a | 373 | /* Returns 0 and fills in value, defined and namebuf, or -ERANGE if |
1da177e4 | 374 | symnum out of range. */ |
ea07890a AD |
375 | int module_get_kallsym(unsigned int symnum, unsigned long *value, char *type, |
376 | char *name, char *module_name, int *exported); | |
1da177e4 LT |
377 | |
378 | /* Look for this name: can be of form module:name. */ | |
379 | unsigned long module_kallsyms_lookup_name(const char *name); | |
380 | ||
1da177e4 LT |
381 | extern void __module_put_and_exit(struct module *mod, long code) |
382 | __attribute__((noreturn)); | |
383 | #define module_put_and_exit(code) __module_put_and_exit(THIS_MODULE, code); | |
384 | ||
385 | #ifdef CONFIG_MODULE_UNLOAD | |
386 | unsigned int module_refcount(struct module *mod); | |
387 | void __symbol_put(const char *symbol); | |
388 | #define symbol_put(x) __symbol_put(MODULE_SYMBOL_PREFIX #x) | |
389 | void symbol_put_addr(void *addr); | |
390 | ||
391 | /* Sometimes we know we already have a refcount, and it's easier not | |
392 | to handle the error case (which only happens with rmmod --wait). */ | |
393 | static inline void __module_get(struct module *module) | |
394 | { | |
395 | if (module) { | |
396 | BUG_ON(module_refcount(module) == 0); | |
397 | local_inc(&module->ref[get_cpu()].count); | |
398 | put_cpu(); | |
399 | } | |
400 | } | |
401 | ||
402 | static inline int try_module_get(struct module *module) | |
403 | { | |
404 | int ret = 1; | |
405 | ||
406 | if (module) { | |
407 | unsigned int cpu = get_cpu(); | |
408 | if (likely(module_is_live(module))) | |
409 | local_inc(&module->ref[cpu].count); | |
410 | else | |
411 | ret = 0; | |
412 | put_cpu(); | |
413 | } | |
414 | return ret; | |
415 | } | |
416 | ||
f6a57033 | 417 | extern void module_put(struct module *module); |
1da177e4 LT |
418 | |
419 | #else /*!CONFIG_MODULE_UNLOAD*/ | |
420 | static inline int try_module_get(struct module *module) | |
421 | { | |
422 | return !module || module_is_live(module); | |
423 | } | |
424 | static inline void module_put(struct module *module) | |
425 | { | |
426 | } | |
427 | static inline void __module_get(struct module *module) | |
428 | { | |
429 | } | |
430 | #define symbol_put(x) do { } while(0) | |
431 | #define symbol_put_addr(p) do { } while(0) | |
432 | ||
433 | #endif /* CONFIG_MODULE_UNLOAD */ | |
434 | ||
435 | /* This is a #define so the string doesn't get put in every .o file */ | |
436 | #define module_name(mod) \ | |
437 | ({ \ | |
438 | struct module *__mod = (mod); \ | |
439 | __mod ? __mod->name : "kernel"; \ | |
440 | }) | |
441 | ||
442 | #define __unsafe(mod) \ | |
443 | do { \ | |
444 | if (mod && !(mod)->unsafe) { \ | |
445 | printk(KERN_WARNING \ | |
446 | "Module %s cannot be unloaded due to unsafe usage in" \ | |
447 | " %s:%u\n", (mod)->name, __FILE__, __LINE__); \ | |
448 | (mod)->unsafe = 1; \ | |
449 | } \ | |
450 | } while(0) | |
451 | ||
452 | /* For kallsyms to ask for address resolution. NULL means not found. */ | |
453 | const char *module_address_lookup(unsigned long addr, | |
454 | unsigned long *symbolsize, | |
455 | unsigned long *offset, | |
456 | char **modname); | |
9d65cb4a | 457 | int lookup_module_symbol_name(unsigned long addr, char *symname); |
a5c43dae | 458 | int lookup_module_symbol_attrs(unsigned long addr, unsigned long *size, unsigned long *offset, char *modname, char *name); |
1da177e4 LT |
459 | |
460 | /* For extable.c to search modules' exception tables. */ | |
461 | const struct exception_table_entry *search_module_extables(unsigned long addr); | |
462 | ||
463 | int register_module_notifier(struct notifier_block * nb); | |
464 | int unregister_module_notifier(struct notifier_block * nb); | |
465 | ||
466 | extern void print_modules(void); | |
467 | ||
1da177e4 LT |
468 | #else /* !CONFIG_MODULES... */ |
469 | #define EXPORT_SYMBOL(sym) | |
470 | #define EXPORT_SYMBOL_GPL(sym) | |
9f28bb7e | 471 | #define EXPORT_SYMBOL_GPL_FUTURE(sym) |
f71d20e9 AV |
472 | #define EXPORT_UNUSED_SYMBOL(sym) |
473 | #define EXPORT_UNUSED_SYMBOL_GPL(sym) | |
1da177e4 LT |
474 | |
475 | /* Given an address, look for it in the exception tables. */ | |
476 | static inline const struct exception_table_entry * | |
477 | search_module_extables(unsigned long addr) | |
478 | { | |
479 | return NULL; | |
480 | } | |
481 | ||
482 | /* Is this address in a module? */ | |
483 | static inline struct module *module_text_address(unsigned long addr) | |
484 | { | |
485 | return NULL; | |
486 | } | |
487 | ||
488 | /* Is this address in a module? (don't take a lock, we're oopsing) */ | |
489 | static inline struct module *__module_text_address(unsigned long addr) | |
490 | { | |
491 | return NULL; | |
492 | } | |
493 | ||
4d435f9d IM |
494 | static inline int is_module_address(unsigned long addr) |
495 | { | |
496 | return 0; | |
497 | } | |
498 | ||
1da177e4 LT |
499 | /* Get/put a kernel symbol (calls should be symmetric) */ |
500 | #define symbol_get(x) ({ extern typeof(x) x __attribute__((weak)); &(x); }) | |
501 | #define symbol_put(x) do { } while(0) | |
502 | #define symbol_put_addr(x) do { } while(0) | |
503 | ||
504 | static inline void __module_get(struct module *module) | |
505 | { | |
506 | } | |
507 | ||
508 | static inline int try_module_get(struct module *module) | |
509 | { | |
510 | return 1; | |
511 | } | |
512 | ||
513 | static inline void module_put(struct module *module) | |
514 | { | |
515 | } | |
516 | ||
517 | #define module_name(mod) "kernel" | |
518 | ||
519 | #define __unsafe(mod) | |
520 | ||
521 | /* For kallsyms to ask for address resolution. NULL means not found. */ | |
522 | static inline const char *module_address_lookup(unsigned long addr, | |
523 | unsigned long *symbolsize, | |
524 | unsigned long *offset, | |
525 | char **modname) | |
526 | { | |
527 | return NULL; | |
528 | } | |
529 | ||
9d65cb4a AD |
530 | static inline int lookup_module_symbol_name(unsigned long addr, char *symname) |
531 | { | |
532 | return -ERANGE; | |
533 | } | |
534 | ||
a5c43dae AD |
535 | static inline int lookup_module_symbol_attrs(unsigned long addr, unsigned long *size, unsigned long *offset, char *modname, char *name) |
536 | { | |
537 | return -ERANGE; | |
538 | } | |
539 | ||
ea07890a AD |
540 | static inline int module_get_kallsym(unsigned int symnum, unsigned long *value, |
541 | char *type, char *name, | |
542 | char *module_name, int *exported) | |
1da177e4 | 543 | { |
ea07890a | 544 | return -ERANGE; |
1da177e4 LT |
545 | } |
546 | ||
547 | static inline unsigned long module_kallsyms_lookup_name(const char *name) | |
548 | { | |
549 | return 0; | |
550 | } | |
551 | ||
1da177e4 LT |
552 | static inline int register_module_notifier(struct notifier_block * nb) |
553 | { | |
554 | /* no events will happen anyway, so this can always succeed */ | |
555 | return 0; | |
556 | } | |
557 | ||
558 | static inline int unregister_module_notifier(struct notifier_block * nb) | |
559 | { | |
560 | return 0; | |
561 | } | |
562 | ||
563 | #define module_put_and_exit(code) do_exit(code) | |
564 | ||
565 | static inline void print_modules(void) | |
566 | { | |
567 | } | |
568 | ||
ef665c1a RD |
569 | #endif /* CONFIG_MODULES */ |
570 | ||
1da177e4 | 571 | struct device_driver; |
ef665c1a | 572 | #ifdef CONFIG_SYSFS |
1da177e4 LT |
573 | struct module; |
574 | ||
823bccfc | 575 | extern struct kset module_subsys; |
ef665c1a RD |
576 | |
577 | int mod_sysfs_init(struct module *mod); | |
578 | int mod_sysfs_setup(struct module *mod, | |
579 | struct kernel_param *kparam, | |
580 | unsigned int num_params); | |
581 | int module_add_modinfo_attrs(struct module *mod); | |
582 | void module_remove_modinfo_attrs(struct module *mod); | |
583 | ||
584 | #else /* !CONFIG_SYSFS */ | |
585 | ||
586 | static inline int mod_sysfs_init(struct module *mod) | |
1da177e4 | 587 | { |
ef665c1a | 588 | return 0; |
1da177e4 LT |
589 | } |
590 | ||
ef665c1a RD |
591 | static inline int mod_sysfs_setup(struct module *mod, |
592 | struct kernel_param *kparam, | |
593 | unsigned int num_params) | |
1da177e4 | 594 | { |
ef665c1a | 595 | return 0; |
1da177e4 LT |
596 | } |
597 | ||
ef665c1a RD |
598 | static inline int module_add_modinfo_attrs(struct module *mod) |
599 | { | |
600 | return 0; | |
601 | } | |
602 | ||
603 | static inline void module_remove_modinfo_attrs(struct module *mod) | |
604 | { } | |
605 | ||
606 | #endif /* CONFIG_SYSFS */ | |
607 | ||
608 | #if defined(CONFIG_SYSFS) && defined(CONFIG_MODULES) | |
609 | ||
610 | void module_add_driver(struct module *mod, struct device_driver *drv); | |
611 | void module_remove_driver(struct device_driver *drv); | |
612 | ||
613 | #else /* not both CONFIG_SYSFS && CONFIG_MODULES */ | |
614 | ||
615 | static inline void module_add_driver(struct module *mod, struct device_driver *drv) | |
616 | { } | |
617 | ||
618 | static inline void module_remove_driver(struct device_driver *drv) | |
619 | { } | |
620 | ||
621 | #endif | |
1da177e4 LT |
622 | |
623 | #define symbol_request(x) try_then_request_module(symbol_get(x), "symbol:" #x) | |
624 | ||
625 | /* BELOW HERE ALL THESE ARE OBSOLETE AND WILL VANISH */ | |
626 | ||
1da177e4 LT |
627 | #define __MODULE_STRING(x) __stringify(x) |
628 | ||
1da177e4 | 629 | #endif /* _LINUX_MODULE_H */ |