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> | |
97e1c18e | 18 | #include <linux/tracepoint.h> |
f5016932 | 19 | #include <linux/export.h> |
1da177e4 | 20 | |
e1783a24 | 21 | #include <linux/percpu.h> |
1da177e4 LT |
22 | #include <asm/module.h> |
23 | ||
106a4ee2 RR |
24 | /* In stripped ARM and x86-64 modules, ~ is surprisingly rare. */ |
25 | #define MODULE_SIG_STRING "~Module signature appended~\n" | |
26 | ||
1da177e4 LT |
27 | /* Not Yet Implemented */ |
28 | #define MODULE_SUPPORTED_DEVICE(name) | |
29 | ||
730b69d2 | 30 | #define MODULE_NAME_LEN MAX_PARAM_PREFIX_LEN |
1da177e4 | 31 | |
1da177e4 LT |
32 | struct modversion_info |
33 | { | |
34 | unsigned long crc; | |
35 | char name[MODULE_NAME_LEN]; | |
36 | }; | |
37 | ||
38 | struct module; | |
39 | ||
4befb026 KS |
40 | struct module_kobject { |
41 | struct kobject kobj; | |
42 | struct module *mod; | |
43 | struct kobject *drivers_dir; | |
44 | struct module_param_attrs *mp; | |
45 | }; | |
46 | ||
1da177e4 | 47 | struct module_attribute { |
4befb026 KS |
48 | struct attribute attr; |
49 | ssize_t (*show)(struct module_attribute *, struct module_kobject *, | |
50 | char *); | |
51 | ssize_t (*store)(struct module_attribute *, struct module_kobject *, | |
1da177e4 | 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 | ||
e94965ed DT |
58 | struct module_version_attribute { |
59 | struct module_attribute mattr; | |
60 | const char *module_name; | |
61 | const char *version; | |
98562ad8 | 62 | } __attribute__ ((__aligned__(sizeof(void *)))); |
e94965ed | 63 | |
9b73a584 | 64 | extern ssize_t __modver_version_show(struct module_attribute *, |
4befb026 | 65 | struct module_kobject *, char *); |
9b73a584 | 66 | |
88bfa324 | 67 | extern struct module_attribute module_uevent; |
1da177e4 LT |
68 | |
69 | /* These are either module local, or the kernel's dummy ones. */ | |
70 | extern int init_module(void); | |
71 | extern void cleanup_module(void); | |
72 | ||
73 | /* Archs provide a method of finding the correct exception table. */ | |
74 | struct exception_table_entry; | |
75 | ||
76 | const struct exception_table_entry * | |
77 | search_extable(const struct exception_table_entry *first, | |
78 | const struct exception_table_entry *last, | |
79 | unsigned long value); | |
80 | void sort_extable(struct exception_table_entry *start, | |
81 | struct exception_table_entry *finish); | |
82 | void sort_main_extable(void); | |
ad6561df | 83 | void trim_init_extable(struct module *m); |
1da177e4 | 84 | |
1da177e4 LT |
85 | #ifdef MODULE |
86 | #define MODULE_GENERIC_TABLE(gtype,name) \ | |
87 | extern const struct gtype##_id __mod_##gtype##_table \ | |
88 | __attribute__ ((unused, alias(__stringify(name)))) | |
89 | ||
1da177e4 LT |
90 | #else /* !MODULE */ |
91 | #define MODULE_GENERIC_TABLE(gtype,name) | |
1da177e4 LT |
92 | #endif |
93 | ||
94 | /* Generic info of form tag = "info" */ | |
95 | #define MODULE_INFO(tag, info) __MODULE_INFO(tag, tag, info) | |
96 | ||
97 | /* For userspace: you can also call me... */ | |
98 | #define MODULE_ALIAS(_alias) MODULE_INFO(alias, _alias) | |
99 | ||
100 | /* | |
101 | * The following license idents are currently accepted as indicating free | |
102 | * software modules | |
103 | * | |
104 | * "GPL" [GNU Public License v2 or later] | |
105 | * "GPL v2" [GNU Public License v2] | |
106 | * "GPL and additional rights" [GNU Public License v2 rights and more] | |
107 | * "Dual BSD/GPL" [GNU Public License v2 | |
108 | * or BSD license choice] | |
8d27e908 XVP |
109 | * "Dual MIT/GPL" [GNU Public License v2 |
110 | * or MIT license choice] | |
1da177e4 LT |
111 | * "Dual MPL/GPL" [GNU Public License v2 |
112 | * or Mozilla license choice] | |
113 | * | |
114 | * The following other idents are available | |
115 | * | |
116 | * "Proprietary" [Non free products] | |
117 | * | |
118 | * There are dual licensed components, but when running with Linux it is the | |
119 | * GPL that is relevant so this is a non issue. Similarly LGPL linked with GPL | |
120 | * is a GPL combined work. | |
121 | * | |
122 | * This exists for several reasons | |
123 | * 1. So modinfo can show license info for users wanting to vet their setup | |
124 | * is free | |
125 | * 2. So the community can ignore bug reports including proprietary modules | |
126 | * 3. So vendors can do likewise based on their own policies | |
127 | */ | |
128 | #define MODULE_LICENSE(_license) MODULE_INFO(license, _license) | |
129 | ||
1d7015ca JB |
130 | /* |
131 | * Author(s), use "Name <email>" or just "Name", for multiple | |
132 | * authors use multiple MODULE_AUTHOR() statements/lines. | |
133 | */ | |
1da177e4 LT |
134 | #define MODULE_AUTHOR(_author) MODULE_INFO(author, _author) |
135 | ||
136 | /* What your module does. */ | |
137 | #define MODULE_DESCRIPTION(_description) MODULE_INFO(description, _description) | |
138 | ||
1da177e4 LT |
139 | #define MODULE_DEVICE_TABLE(type,name) \ |
140 | MODULE_GENERIC_TABLE(type##_device,name) | |
141 | ||
142 | /* Version of form [<epoch>:]<version>[-<extra-version>]. | |
143 | Or for CVS/RCS ID version, everything but the number is stripped. | |
144 | <epoch>: A (small) unsigned integer which allows you to start versions | |
145 | anew. If not mentioned, it's zero. eg. "2:1.0" is after | |
146 | "1:2.0". | |
147 | <version>: The <version> may contain only alphanumerics and the | |
148 | character `.'. Ordered by numeric sort for numeric parts, | |
149 | ascii sort for ascii parts (as per RPM or DEB algorithm). | |
150 | <extraversion>: Like <version>, but inserted for local | |
151 | customizations, eg "rh3" or "rusty1". | |
152 | ||
153 | Using this automatically adds a checksum of the .c files and the | |
154 | local headers in "srcversion". | |
155 | */ | |
e94965ed | 156 | |
3b90a5b2 | 157 | #if defined(MODULE) || !defined(CONFIG_SYSFS) |
1da177e4 | 158 | #define MODULE_VERSION(_version) MODULE_INFO(version, _version) |
e94965ed DT |
159 | #else |
160 | #define MODULE_VERSION(_version) \ | |
b4bc8428 | 161 | static struct module_version_attribute ___modver_attr = { \ |
e94965ed DT |
162 | .mattr = { \ |
163 | .attr = { \ | |
164 | .name = "version", \ | |
165 | .mode = S_IRUGO, \ | |
166 | }, \ | |
167 | .show = __modver_version_show, \ | |
168 | }, \ | |
169 | .module_name = KBUILD_MODNAME, \ | |
170 | .version = _version, \ | |
b4bc8428 DT |
171 | }; \ |
172 | static const struct module_version_attribute \ | |
173 | __used __attribute__ ((__section__ ("__modver"))) \ | |
174 | * __moduleparam_const __modver_attr = &___modver_attr | |
e94965ed | 175 | #endif |
1da177e4 | 176 | |
187afbed JM |
177 | /* Optional firmware file (or files) needed by the module |
178 | * format is simply firmware file name. Multiple firmware | |
179 | * files require multiple MODULE_FIRMWARE() specifiers */ | |
180 | #define MODULE_FIRMWARE(_firmware) MODULE_INFO(firmware, _firmware) | |
181 | ||
1da177e4 LT |
182 | /* Given an address, look for it in the exception tables */ |
183 | const struct exception_table_entry *search_exception_tables(unsigned long add); | |
184 | ||
185 | struct notifier_block; | |
186 | ||
187 | #ifdef CONFIG_MODULES | |
188 | ||
5ed10910 | 189 | extern int modules_disabled; /* for sysctl */ |
1da177e4 LT |
190 | /* Get/put a kernel symbol (calls must be symmetric) */ |
191 | void *__symbol_get(const char *symbol); | |
192 | void *__symbol_get_gpl(const char *symbol); | |
b92021b0 | 193 | #define symbol_get(x) ((typeof(&x))(__symbol_get(VMLINUX_SYMBOL_STR(x)))) |
1da177e4 | 194 | |
c8e21ced RR |
195 | /* modules using other modules: kdb wants to see this. */ |
196 | struct module_use { | |
197 | struct list_head source_list; | |
198 | struct list_head target_list; | |
199 | struct module *source, *target; | |
200 | }; | |
201 | ||
0d21b0e3 RR |
202 | enum module_state { |
203 | MODULE_STATE_LIVE, /* Normal state. */ | |
204 | MODULE_STATE_COMING, /* Full formed, running module_init. */ | |
205 | MODULE_STATE_GOING, /* Going away. */ | |
206 | MODULE_STATE_UNFORMED, /* Still setting it up. */ | |
1da177e4 LT |
207 | }; |
208 | ||
bd77c047 ED |
209 | /** |
210 | * struct module_ref - per cpu module reference counts | |
211 | * @incs: number of module get on this cpu | |
212 | * @decs: number of module put on this cpu | |
213 | * | |
214 | * We force an alignment on 8 or 16 bytes, so that alloc_percpu() | |
215 | * put @incs/@decs in same cache line, with no extra memory cost, | |
216 | * since alloc_percpu() is fine grained. | |
217 | */ | |
218 | struct module_ref { | |
219 | unsigned long incs; | |
220 | unsigned long decs; | |
221 | } __attribute((aligned(2 * sizeof(unsigned long)))); | |
222 | ||
3d5e41f3 RR |
223 | struct mod_kallsyms { |
224 | Elf_Sym *symtab; | |
225 | unsigned int num_symtab; | |
226 | char *strtab; | |
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 | 250 | |
e180a6b7 RR |
251 | /* Kernel parameters. */ |
252 | struct kernel_param *kp; | |
253 | unsigned int num_kp; | |
254 | ||
1da177e4 | 255 | /* GPL-only exported symbols. */ |
1da177e4 | 256 | unsigned int num_gpl_syms; |
af540689 | 257 | const struct kernel_symbol *gpl_syms; |
1da177e4 LT |
258 | const unsigned long *gpl_crcs; |
259 | ||
f7f5b675 | 260 | #ifdef CONFIG_UNUSED_SYMBOLS |
f71d20e9 AV |
261 | /* unused exported symbols. */ |
262 | const struct kernel_symbol *unused_syms; | |
f71d20e9 | 263 | const unsigned long *unused_crcs; |
af540689 RK |
264 | unsigned int num_unused_syms; |
265 | ||
f71d20e9 | 266 | /* GPL-only, unused exported symbols. */ |
f71d20e9 | 267 | unsigned int num_unused_gpl_syms; |
af540689 | 268 | const struct kernel_symbol *unused_gpl_syms; |
f71d20e9 | 269 | const unsigned long *unused_gpl_crcs; |
f7f5b675 | 270 | #endif |
f71d20e9 | 271 | |
106a4ee2 RR |
272 | #ifdef CONFIG_MODULE_SIG |
273 | /* Signature was verified. */ | |
274 | bool sig_ok; | |
275 | #endif | |
276 | ||
9f28bb7e GKH |
277 | /* symbols that will be GPL-only in the near future. */ |
278 | const struct kernel_symbol *gpl_future_syms; | |
9f28bb7e | 279 | const unsigned long *gpl_future_crcs; |
af540689 | 280 | unsigned int num_gpl_future_syms; |
9f28bb7e | 281 | |
1da177e4 LT |
282 | /* Exception table */ |
283 | unsigned int num_exentries; | |
5e458cc0 | 284 | struct exception_table_entry *extable; |
1da177e4 LT |
285 | |
286 | /* Startup function. */ | |
287 | int (*init)(void); | |
288 | ||
289 | /* If this is non-NULL, vfree after init() returns */ | |
290 | void *module_init; | |
291 | ||
292 | /* Here is the actual code + data, vfree'd on unload. */ | |
293 | void *module_core; | |
294 | ||
295 | /* Here are the sizes of the init and core sections */ | |
2f0f2a33 | 296 | unsigned int init_size, core_size; |
1da177e4 LT |
297 | |
298 | /* The size of the executable code in each section. */ | |
2f0f2a33 | 299 | unsigned int init_text_size, core_text_size; |
1da177e4 | 300 | |
84e1c6bb MC |
301 | /* Size of RO sections of the module (text+rodata) */ |
302 | unsigned int init_ro_size, core_ro_size; | |
303 | ||
1da177e4 LT |
304 | /* Arch-specific module values */ |
305 | struct mod_arch_specific arch; | |
306 | ||
2bc2d61a RD |
307 | unsigned int taints; /* same bits as kernel:tainted */ |
308 | ||
7664c5a1 JF |
309 | #ifdef CONFIG_GENERIC_BUG |
310 | /* Support for BUG */ | |
af540689 | 311 | unsigned num_bugs; |
7664c5a1 JF |
312 | struct list_head bug_list; |
313 | struct bug_entry *bug_table; | |
1da177e4 LT |
314 | #endif |
315 | ||
316 | #ifdef CONFIG_KALLSYMS | |
3d5e41f3 RR |
317 | /* Protected by RCU and/or module_mutex: use rcu_dereference() */ |
318 | struct mod_kallsyms *kallsyms; | |
319 | struct mod_kallsyms core_kallsyms; | |
1da177e4 LT |
320 | |
321 | /* Section attributes */ | |
322 | struct module_sect_attrs *sect_attrs; | |
6d760133 RM |
323 | |
324 | /* Notes attributes */ | |
325 | struct module_notes_attrs *notes_attrs; | |
1da177e4 LT |
326 | #endif |
327 | ||
a288bd65 RK |
328 | /* The command line arguments (may be mangled). People like |
329 | keeping pointers to this stuff */ | |
330 | char *args; | |
331 | ||
259354de | 332 | #ifdef CONFIG_SMP |
1da177e4 | 333 | /* Per-cpu data. */ |
259354de TH |
334 | void __percpu *percpu; |
335 | unsigned int percpu_size; | |
336 | #endif | |
1da177e4 | 337 | |
97e1c18e | 338 | #ifdef CONFIG_TRACEPOINTS |
97e1c18e | 339 | unsigned int num_tracepoints; |
a288bd65 | 340 | struct tracepoint * const *tracepoints_ptrs; |
97e1c18e | 341 | #endif |
bf5438fc JB |
342 | #ifdef HAVE_JUMP_LABEL |
343 | struct jump_entry *jump_entries; | |
344 | unsigned int num_jump_entries; | |
345 | #endif | |
769b0441 | 346 | #ifdef CONFIG_TRACING |
1ba28e02 | 347 | unsigned int num_trace_bprintk_fmt; |
a288bd65 | 348 | const char **trace_bprintk_fmt_start; |
1ba28e02 | 349 | #endif |
6d723736 | 350 | #ifdef CONFIG_EVENT_TRACING |
e4a9ea5e | 351 | struct ftrace_event_call **trace_events; |
6d723736 SR |
352 | unsigned int num_trace_events; |
353 | #endif | |
93eb677d | 354 | #ifdef CONFIG_FTRACE_MCOUNT_RECORD |
93eb677d | 355 | unsigned int num_ftrace_callsites; |
a288bd65 | 356 | unsigned long *ftrace_callsites; |
93eb677d | 357 | #endif |
1ba28e02 | 358 | |
af540689 RK |
359 | #ifdef CONFIG_MODULE_UNLOAD |
360 | /* What modules depend on me? */ | |
2c02dfe7 LT |
361 | struct list_head source_list; |
362 | /* What modules do I depend on? */ | |
363 | struct list_head target_list; | |
af540689 RK |
364 | |
365 | /* Who is waiting for us to be unloaded */ | |
366 | struct task_struct *waiter; | |
367 | ||
368 | /* Destruction function. */ | |
369 | void (*exit)(void); | |
370 | ||
bd77c047 | 371 | struct module_ref __percpu *refptr; |
af540689 | 372 | #endif |
b99b87f7 PO |
373 | |
374 | #ifdef CONFIG_CONSTRUCTORS | |
375 | /* Constructor functions. */ | |
376 | ctor_fn_t *ctors; | |
377 | unsigned int num_ctors; | |
378 | #endif | |
1da177e4 | 379 | }; |
e61a1c1c RZ |
380 | #ifndef MODULE_ARCH_INIT |
381 | #define MODULE_ARCH_INIT {} | |
382 | #endif | |
1da177e4 | 383 | |
c6b37801 TA |
384 | extern struct mutex module_mutex; |
385 | ||
1da177e4 LT |
386 | /* FIXME: It'd be nice to isolate modules during init, too, so they |
387 | aren't used before they (may) fail. But presently too much code | |
388 | (IDE & SCSI) require entry into the module during init.*/ | |
389 | static inline int module_is_live(struct module *mod) | |
390 | { | |
391 | return mod->state != MODULE_STATE_GOING; | |
392 | } | |
393 | ||
1da177e4 | 394 | struct module *__module_text_address(unsigned long addr); |
e610499e RR |
395 | struct module *__module_address(unsigned long addr); |
396 | bool is_module_address(unsigned long addr); | |
10fad5e4 | 397 | bool is_module_percpu_address(unsigned long addr); |
e610499e | 398 | bool is_module_text_address(unsigned long addr); |
1da177e4 | 399 | |
93843b37 | 400 | static inline int within_module_core(unsigned long addr, const struct module *mod) |
a06f6211 MH |
401 | { |
402 | return (unsigned long)mod->module_core <= addr && | |
403 | addr < (unsigned long)mod->module_core + mod->core_size; | |
404 | } | |
405 | ||
93843b37 | 406 | static inline int within_module_init(unsigned long addr, const struct module *mod) |
a06f6211 MH |
407 | { |
408 | return (unsigned long)mod->module_init <= addr && | |
409 | addr < (unsigned long)mod->module_init + mod->init_size; | |
410 | } | |
411 | ||
c6b37801 TA |
412 | /* Search for module by name: must hold module_mutex. */ |
413 | struct module *find_module(const char *name); | |
414 | ||
415 | struct symsearch { | |
416 | const struct kernel_symbol *start, *stop; | |
417 | const unsigned long *crcs; | |
418 | enum { | |
419 | NOT_GPL_ONLY, | |
420 | GPL_ONLY, | |
421 | WILL_BE_GPL_ONLY, | |
422 | } licence; | |
423 | bool unused; | |
424 | }; | |
425 | ||
426 | /* Search for an exported symbol by name. */ | |
427 | const struct kernel_symbol *find_symbol(const char *name, | |
428 | struct module **owner, | |
429 | const unsigned long **crc, | |
430 | bool gplok, | |
431 | bool warn); | |
432 | ||
433 | /* Walk the exported symbol table */ | |
de4d8d53 RR |
434 | bool each_symbol_section(bool (*fn)(const struct symsearch *arr, |
435 | struct module *owner, | |
436 | void *data), void *data); | |
c6b37801 | 437 | |
ea07890a | 438 | /* Returns 0 and fills in value, defined and namebuf, or -ERANGE if |
1da177e4 | 439 | symnum out of range. */ |
ea07890a AD |
440 | int module_get_kallsym(unsigned int symnum, unsigned long *value, char *type, |
441 | char *name, char *module_name, int *exported); | |
1da177e4 LT |
442 | |
443 | /* Look for this name: can be of form module:name. */ | |
444 | unsigned long module_kallsyms_lookup_name(const char *name); | |
445 | ||
75a66614 AK |
446 | int module_kallsyms_on_each_symbol(int (*fn)(void *, const char *, |
447 | struct module *, unsigned long), | |
448 | void *data); | |
449 | ||
1da177e4 LT |
450 | extern void __module_put_and_exit(struct module *mod, long code) |
451 | __attribute__((noreturn)); | |
452 | #define module_put_and_exit(code) __module_put_and_exit(THIS_MODULE, code); | |
453 | ||
454 | #ifdef CONFIG_MODULE_UNLOAD | |
bd77c047 | 455 | unsigned long module_refcount(struct module *mod); |
1da177e4 | 456 | void __symbol_put(const char *symbol); |
b92021b0 | 457 | #define symbol_put(x) __symbol_put(VMLINUX_SYMBOL_STR(x)) |
1da177e4 LT |
458 | void symbol_put_addr(void *addr); |
459 | ||
460 | /* Sometimes we know we already have a refcount, and it's easier not | |
461 | to handle the error case (which only happens with rmmod --wait). */ | |
d53799be | 462 | extern void __module_get(struct module *module); |
e1783a24 | 463 | |
d53799be SR |
464 | /* This is the Right Way to get a module: if it fails, it's being removed, |
465 | * so pretend it's not there. */ | |
466 | extern bool try_module_get(struct module *module); | |
1da177e4 | 467 | |
f6a57033 | 468 | extern void module_put(struct module *module); |
1da177e4 LT |
469 | |
470 | #else /*!CONFIG_MODULE_UNLOAD*/ | |
471 | static inline int try_module_get(struct module *module) | |
472 | { | |
473 | return !module || module_is_live(module); | |
474 | } | |
475 | static inline void module_put(struct module *module) | |
476 | { | |
477 | } | |
478 | static inline void __module_get(struct module *module) | |
479 | { | |
480 | } | |
481 | #define symbol_put(x) do { } while(0) | |
482 | #define symbol_put_addr(p) do { } while(0) | |
483 | ||
484 | #endif /* CONFIG_MODULE_UNLOAD */ | |
dfd62d1d | 485 | int ref_module(struct module *a, struct module *b); |
1da177e4 LT |
486 | |
487 | /* This is a #define so the string doesn't get put in every .o file */ | |
488 | #define module_name(mod) \ | |
489 | ({ \ | |
490 | struct module *__mod = (mod); \ | |
491 | __mod ? __mod->name : "kernel"; \ | |
492 | }) | |
493 | ||
6dd06c9f RR |
494 | /* For kallsyms to ask for address resolution. namebuf should be at |
495 | * least KSYM_NAME_LEN long: a pointer to namebuf is returned if | |
496 | * found, otherwise NULL. */ | |
92dfc9dc | 497 | const char *module_address_lookup(unsigned long addr, |
6dd06c9f RR |
498 | unsigned long *symbolsize, |
499 | unsigned long *offset, | |
500 | char **modname, | |
501 | char *namebuf); | |
9d65cb4a | 502 | int lookup_module_symbol_name(unsigned long addr, char *symname); |
a5c43dae | 503 | int lookup_module_symbol_attrs(unsigned long addr, unsigned long *size, unsigned long *offset, char *modname, char *name); |
1da177e4 LT |
504 | |
505 | /* For extable.c to search modules' exception tables. */ | |
506 | const struct exception_table_entry *search_module_extables(unsigned long addr); | |
507 | ||
508 | int register_module_notifier(struct notifier_block * nb); | |
509 | int unregister_module_notifier(struct notifier_block * nb); | |
510 | ||
511 | extern void print_modules(void); | |
512 | ||
1da177e4 | 513 | #else /* !CONFIG_MODULES... */ |
1da177e4 LT |
514 | |
515 | /* Given an address, look for it in the exception tables. */ | |
516 | static inline const struct exception_table_entry * | |
517 | search_module_extables(unsigned long addr) | |
518 | { | |
519 | return NULL; | |
520 | } | |
521 | ||
e610499e RR |
522 | static inline struct module *__module_address(unsigned long addr) |
523 | { | |
524 | return NULL; | |
525 | } | |
526 | ||
1da177e4 LT |
527 | static inline struct module *__module_text_address(unsigned long addr) |
528 | { | |
529 | return NULL; | |
530 | } | |
531 | ||
e610499e RR |
532 | static inline bool is_module_address(unsigned long addr) |
533 | { | |
534 | return false; | |
535 | } | |
536 | ||
d5e50daf RD |
537 | static inline bool is_module_percpu_address(unsigned long addr) |
538 | { | |
539 | return false; | |
540 | } | |
541 | ||
e610499e | 542 | static inline bool is_module_text_address(unsigned long addr) |
4d435f9d | 543 | { |
e610499e | 544 | return false; |
4d435f9d IM |
545 | } |
546 | ||
1da177e4 LT |
547 | /* Get/put a kernel symbol (calls should be symmetric) */ |
548 | #define symbol_get(x) ({ extern typeof(x) x __attribute__((weak)); &(x); }) | |
549 | #define symbol_put(x) do { } while(0) | |
550 | #define symbol_put_addr(x) do { } while(0) | |
551 | ||
552 | static inline void __module_get(struct module *module) | |
553 | { | |
554 | } | |
555 | ||
556 | static inline int try_module_get(struct module *module) | |
557 | { | |
558 | return 1; | |
559 | } | |
560 | ||
561 | static inline void module_put(struct module *module) | |
562 | { | |
563 | } | |
564 | ||
565 | #define module_name(mod) "kernel" | |
566 | ||
1da177e4 | 567 | /* For kallsyms to ask for address resolution. NULL means not found. */ |
92dfc9dc | 568 | static inline const char *module_address_lookup(unsigned long addr, |
6dd06c9f RR |
569 | unsigned long *symbolsize, |
570 | unsigned long *offset, | |
571 | char **modname, | |
572 | char *namebuf) | |
1da177e4 LT |
573 | { |
574 | return NULL; | |
575 | } | |
576 | ||
9d65cb4a AD |
577 | static inline int lookup_module_symbol_name(unsigned long addr, char *symname) |
578 | { | |
579 | return -ERANGE; | |
580 | } | |
581 | ||
a5c43dae AD |
582 | static inline int lookup_module_symbol_attrs(unsigned long addr, unsigned long *size, unsigned long *offset, char *modname, char *name) |
583 | { | |
584 | return -ERANGE; | |
585 | } | |
586 | ||
ea07890a AD |
587 | static inline int module_get_kallsym(unsigned int symnum, unsigned long *value, |
588 | char *type, char *name, | |
589 | char *module_name, int *exported) | |
1da177e4 | 590 | { |
ea07890a | 591 | return -ERANGE; |
1da177e4 LT |
592 | } |
593 | ||
594 | static inline unsigned long module_kallsyms_lookup_name(const char *name) | |
595 | { | |
596 | return 0; | |
597 | } | |
598 | ||
75a66614 AK |
599 | static inline int module_kallsyms_on_each_symbol(int (*fn)(void *, const char *, |
600 | struct module *, | |
601 | unsigned long), | |
602 | void *data) | |
603 | { | |
604 | return 0; | |
605 | } | |
606 | ||
1da177e4 LT |
607 | static inline int register_module_notifier(struct notifier_block * nb) |
608 | { | |
609 | /* no events will happen anyway, so this can always succeed */ | |
610 | return 0; | |
611 | } | |
612 | ||
613 | static inline int unregister_module_notifier(struct notifier_block * nb) | |
614 | { | |
615 | return 0; | |
616 | } | |
617 | ||
618 | #define module_put_and_exit(code) do_exit(code) | |
619 | ||
620 | static inline void print_modules(void) | |
621 | { | |
622 | } | |
ef665c1a RD |
623 | #endif /* CONFIG_MODULES */ |
624 | ||
ef665c1a | 625 | #ifdef CONFIG_SYSFS |
7405c1e1 GKH |
626 | extern struct kset *module_kset; |
627 | extern struct kobj_type module_ktype; | |
628 | extern int module_sysfs_initialized; | |
ef665c1a RD |
629 | #endif /* CONFIG_SYSFS */ |
630 | ||
1da177e4 LT |
631 | #define symbol_request(x) try_then_request_module(symbol_get(x), "symbol:" #x) |
632 | ||
633 | /* BELOW HERE ALL THESE ARE OBSOLETE AND WILL VANISH */ | |
634 | ||
1da177e4 LT |
635 | #define __MODULE_STRING(x) __stringify(x) |
636 | ||
84e1c6bb MC |
637 | #ifdef CONFIG_DEBUG_SET_MODULE_RONX |
638 | extern void set_all_modules_text_rw(void); | |
639 | extern void set_all_modules_text_ro(void); | |
640 | #else | |
641 | static inline void set_all_modules_text_rw(void) { } | |
642 | static inline void set_all_modules_text_ro(void) { } | |
643 | #endif | |
0d9c25dd AM |
644 | |
645 | #ifdef CONFIG_GENERIC_BUG | |
5336377d | 646 | void module_bug_finalize(const Elf_Ehdr *, const Elf_Shdr *, |
0d9c25dd AM |
647 | struct module *); |
648 | void module_bug_cleanup(struct module *); | |
649 | ||
650 | #else /* !CONFIG_GENERIC_BUG */ | |
651 | ||
5336377d | 652 | static inline void module_bug_finalize(const Elf_Ehdr *hdr, |
0d9c25dd AM |
653 | const Elf_Shdr *sechdrs, |
654 | struct module *mod) | |
655 | { | |
0d9c25dd AM |
656 | } |
657 | static inline void module_bug_cleanup(struct module *mod) {} | |
658 | #endif /* CONFIG_GENERIC_BUG */ | |
659 | ||
1da177e4 | 660 | #endif /* _LINUX_MODULE_H */ |