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Linus Torvalds1da177e2005-04-16 15:20:36 -07001#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 */
Linus Torvalds1da177e2005-04-16 15:20:36 -07009#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>
Mathieu Desnoyers8256e472007-10-18 23:41:06 -070018#include <linux/marker.h>
Mathieu Desnoyers97e1c182008-07-18 12:16:16 -040019#include <linux/tracepoint.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070020#include <asm/local.h>
21
22#include <asm/module.h>
23
24/* Not Yet Implemented */
25#define MODULE_SUPPORTED_DEVICE(name)
26
Adrian Bunkf606ddf2008-07-23 21:28:50 -070027/* some toolchains uses a `_' prefix for all user symbols */
Linus Torvalds1da177e2005-04-16 15:20:36 -070028#ifndef MODULE_SYMBOL_PREFIX
29#define MODULE_SYMBOL_PREFIX ""
30#endif
31
Rusty Russell730b69d2008-10-22 10:00:22 -050032#define MODULE_NAME_LEN MAX_PARAM_PREFIX_LEN
Linus Torvalds1da177e2005-04-16 15:20:36 -070033
34struct kernel_symbol
35{
36 unsigned long value;
37 const char *name;
38};
39
40struct modversion_info
41{
42 unsigned long crc;
43 char name[MODULE_NAME_LEN];
44};
45
46struct module;
47
48struct 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);
Matt Domschc988d2b2005-06-23 22:05:15 -070053 void (*setup)(struct module *, const char *);
54 int (*test)(struct module *);
55 void (*free)(struct module *);
Linus Torvalds1da177e2005-04-16 15:20:36 -070056};
57
58struct module_kobject
59{
60 struct kobject kobj;
61 struct module *mod;
Kay Sieversf30c53a2007-01-15 20:22:02 +010062 struct kobject *drivers_dir;
Rusty Russell9b473de2008-10-22 10:00:22 -050063 struct module_param_attrs *mp;
Linus Torvalds1da177e2005-04-16 15:20:36 -070064};
65
66/* These are either module local, or the kernel's dummy ones. */
67extern int init_module(void);
68extern void cleanup_module(void);
69
70/* Archs provide a method of finding the correct exception table. */
71struct exception_table_entry;
72
73const struct exception_table_entry *
74search_extable(const struct exception_table_entry *first,
75 const struct exception_table_entry *last,
76 unsigned long value);
77void sort_extable(struct exception_table_entry *start,
78 struct exception_table_entry *finish);
79void sort_main_extable(void);
80
Linus Torvalds1da177e2005-04-16 15:20:36 -070081#ifdef MODULE
82#define MODULE_GENERIC_TABLE(gtype,name) \
83extern const struct gtype##_id __mod_##gtype##_table \
84 __attribute__ ((unused, alias(__stringify(name))))
85
86extern 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]
Xose Vazquez Perez8d27e902006-06-23 02:05:13 -0700108 * "Dual MIT/GPL" [GNU Public License v2
109 * or MIT license choice]
Linus Torvalds1da177e2005-04-16 15:20:36 -0700110 * "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
Rene Herman108f39a2007-05-10 22:22:50 -0700129/* Author, ideally of form NAME[, NAME]*[ and NAME] */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700130#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
Jon Masters187afbe2006-08-28 17:08:21 -0500159/* 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
Linus Torvalds1da177e2005-04-16 15:20:36 -0700164/* Given an address, look for it in the exception tables */
165const struct exception_table_entry *search_exception_tables(unsigned long add);
166
167struct notifier_block;
168
169#ifdef CONFIG_MODULES
170
171/* Get/put a kernel symbol (calls must be symmetric) */
172void *__symbol_get(const char *symbol);
173void *__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 \
Adrian Bunk3ff6eec2008-01-24 22:16:20 +0100183 __used \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700184 __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) \
Patrick McHardya1a8fee2006-03-23 22:07:34 -0800192 extern typeof(sym) sym; \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700193 __CRC_SYMBOL(sym, sec) \
194 static const char __kstrtab_##sym[] \
Rusty Russellea01e792008-03-13 09:02:17 +0000195 __attribute__((section("__ksymtab_strings"), aligned(1))) \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700196 = MODULE_SYMBOL_PREFIX #sym; \
197 static const struct kernel_symbol __ksymtab_##sym \
Adrian Bunk3ff6eec2008-01-24 22:16:20 +0100198 __used \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700199 __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
Greg Kroah-Hartman9f28bb72006-03-20 13:17:13 -0800208#define EXPORT_SYMBOL_GPL_FUTURE(sym) \
209 __EXPORT_SYMBOL(sym, "_gpl_future")
210
Arjan van de Venf71d20e2006-06-28 04:26:45 -0700211
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
Linus Torvalds1da177e2005-04-16 15:20:36 -0700220#endif
221
222struct module_ref
223{
224 local_t count;
225} ____cacheline_aligned;
226
227enum module_state
228{
229 MODULE_STATE_LIVE,
230 MODULE_STATE_COMING,
231 MODULE_STATE_GOING,
232};
233
Linus Torvalds1da177e2005-04-16 15:20:36 -0700234struct module
235{
236 enum module_state state;
237
238 /* Member of list of modules */
239 struct list_head list;
240
241 /* Unique handle for this module */
242 char name[MODULE_NAME_LEN];
243
244 /* Sysfs stuff. */
245 struct module_kobject mkobj;
Greg Kroah-Hartman03e88ae12006-02-16 13:50:23 -0800246 struct module_attribute *modinfo_attrs;
Matt Domschc988d2b2005-06-23 22:05:15 -0700247 const char *version;
248 const char *srcversion;
Kay Sievers270a6c42007-01-18 13:26:15 +0100249 struct kobject *holders_dir;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700250
251 /* Exported symbols */
252 const struct kernel_symbol *syms;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700253 const unsigned long *crcs;
Richard Kennedyaf540682008-07-22 19:24:26 -0500254 unsigned int num_syms;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700255
256 /* GPL-only exported symbols. */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700257 unsigned int num_gpl_syms;
Richard Kennedyaf540682008-07-22 19:24:26 -0500258 const struct kernel_symbol *gpl_syms;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700259 const unsigned long *gpl_crcs;
260
Denys Vlasenkof7f5b672008-07-22 19:24:26 -0500261#ifdef CONFIG_UNUSED_SYMBOLS
Arjan van de Venf71d20e2006-06-28 04:26:45 -0700262 /* unused exported symbols. */
263 const struct kernel_symbol *unused_syms;
Arjan van de Venf71d20e2006-06-28 04:26:45 -0700264 const unsigned long *unused_crcs;
Richard Kennedyaf540682008-07-22 19:24:26 -0500265 unsigned int num_unused_syms;
266
Arjan van de Venf71d20e2006-06-28 04:26:45 -0700267 /* GPL-only, unused exported symbols. */
Arjan van de Venf71d20e2006-06-28 04:26:45 -0700268 unsigned int num_unused_gpl_syms;
Richard Kennedyaf540682008-07-22 19:24:26 -0500269 const struct kernel_symbol *unused_gpl_syms;
Arjan van de Venf71d20e2006-06-28 04:26:45 -0700270 const unsigned long *unused_gpl_crcs;
Denys Vlasenkof7f5b672008-07-22 19:24:26 -0500271#endif
Arjan van de Venf71d20e2006-06-28 04:26:45 -0700272
Greg Kroah-Hartman9f28bb72006-03-20 13:17:13 -0800273 /* symbols that will be GPL-only in the near future. */
274 const struct kernel_symbol *gpl_future_syms;
Greg Kroah-Hartman9f28bb72006-03-20 13:17:13 -0800275 const unsigned long *gpl_future_crcs;
Richard Kennedyaf540682008-07-22 19:24:26 -0500276 unsigned int num_gpl_future_syms;
Greg Kroah-Hartman9f28bb72006-03-20 13:17:13 -0800277
Linus Torvalds1da177e2005-04-16 15:20:36 -0700278 /* Exception table */
279 unsigned int num_exentries;
Rusty Russell5e458cc2008-10-22 10:00:13 -0500280 struct exception_table_entry *extable;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700281
282 /* Startup function. */
283 int (*init)(void);
284
285 /* If this is non-NULL, vfree after init() returns */
286 void *module_init;
287
288 /* Here is the actual code + data, vfree'd on unload. */
289 void *module_core;
290
291 /* Here are the sizes of the init and core sections */
Denys Vlasenko2f0f2a32008-07-22 19:24:27 -0500292 unsigned int init_size, core_size;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700293
294 /* The size of the executable code in each section. */
Denys Vlasenko2f0f2a32008-07-22 19:24:27 -0500295 unsigned int init_text_size, core_text_size;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700296
Jan Beulich4552d5d2006-06-26 13:57:28 +0200297 /* The handle returned from unwind_add_table. */
298 void *unwind_info;
299
Linus Torvalds1da177e2005-04-16 15:20:36 -0700300 /* Arch-specific module values */
301 struct mod_arch_specific arch;
302
Randy Dunlap2bc2d612006-10-02 02:17:02 -0700303 unsigned int taints; /* same bits as kernel:tainted */
304
Jeremy Fitzhardinge7664c5a2006-12-08 02:36:19 -0800305#ifdef CONFIG_GENERIC_BUG
306 /* Support for BUG */
Richard Kennedyaf540682008-07-22 19:24:26 -0500307 unsigned num_bugs;
Jeremy Fitzhardinge7664c5a2006-12-08 02:36:19 -0800308 struct list_head bug_list;
309 struct bug_entry *bug_table;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700310#endif
311
312#ifdef CONFIG_KALLSYMS
313 /* We keep the symbol and string tables for kallsyms. */
314 Elf_Sym *symtab;
Denys Vlasenko2f0f2a32008-07-22 19:24:27 -0500315 unsigned int num_symtab;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700316 char *strtab;
317
318 /* Section attributes */
319 struct module_sect_attrs *sect_attrs;
Roland McGrath6d760132007-10-16 23:26:40 -0700320
321 /* Notes attributes */
322 struct module_notes_attrs *notes_attrs;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700323#endif
324
325 /* Per-cpu data. */
326 void *percpu;
327
328 /* The command line arguments (may be mangled). People like
329 keeping pointers to this stuff */
330 char *args;
Mathieu Desnoyers8256e472007-10-18 23:41:06 -0700331#ifdef CONFIG_MARKERS
332 struct marker *markers;
333 unsigned int num_markers;
334#endif
Mathieu Desnoyers97e1c182008-07-18 12:16:16 -0400335#ifdef CONFIG_TRACEPOINTS
336 struct tracepoint *tracepoints;
337 unsigned int num_tracepoints;
338#endif
Richard Kennedyaf540682008-07-22 19:24:26 -0500339
340#ifdef CONFIG_MODULE_UNLOAD
341 /* What modules depend on me? */
342 struct list_head modules_which_use_me;
343
344 /* Who is waiting for us to be unloaded */
345 struct task_struct *waiter;
346
347 /* Destruction function. */
348 void (*exit)(void);
349
350 /* Reference counts */
351 struct module_ref ref[NR_CPUS];
352#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700353};
Roman Zippele61a1c12007-05-09 02:35:15 -0700354#ifndef MODULE_ARCH_INIT
355#define MODULE_ARCH_INIT {}
356#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700357
358/* FIXME: It'd be nice to isolate modules during init, too, so they
359 aren't used before they (may) fail. But presently too much code
360 (IDE & SCSI) require entry into the module during init.*/
361static inline int module_is_live(struct module *mod)
362{
363 return mod->state != MODULE_STATE_GOING;
364}
365
366/* Is this address in a module? (second is with no locks, for oops) */
367struct module *module_text_address(unsigned long addr);
368struct module *__module_text_address(unsigned long addr);
Ingo Molnar4d435f92006-07-03 00:24:24 -0700369int is_module_address(unsigned long addr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700370
Alexey Dobriyanea078902007-05-08 00:28:39 -0700371/* Returns 0 and fills in value, defined and namebuf, or -ERANGE if
Linus Torvalds1da177e2005-04-16 15:20:36 -0700372 symnum out of range. */
Alexey Dobriyanea078902007-05-08 00:28:39 -0700373int module_get_kallsym(unsigned int symnum, unsigned long *value, char *type,
374 char *name, char *module_name, int *exported);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700375
376/* Look for this name: can be of form module:name. */
377unsigned long module_kallsyms_lookup_name(const char *name);
378
Linus Torvalds1da177e2005-04-16 15:20:36 -0700379extern void __module_put_and_exit(struct module *mod, long code)
380 __attribute__((noreturn));
381#define module_put_and_exit(code) __module_put_and_exit(THIS_MODULE, code);
382
383#ifdef CONFIG_MODULE_UNLOAD
384unsigned int module_refcount(struct module *mod);
385void __symbol_put(const char *symbol);
386#define symbol_put(x) __symbol_put(MODULE_SYMBOL_PREFIX #x)
387void symbol_put_addr(void *addr);
388
389/* Sometimes we know we already have a refcount, and it's easier not
390 to handle the error case (which only happens with rmmod --wait). */
391static inline void __module_get(struct module *module)
392{
393 if (module) {
394 BUG_ON(module_refcount(module) == 0);
395 local_inc(&module->ref[get_cpu()].count);
396 put_cpu();
397 }
398}
399
400static inline int try_module_get(struct module *module)
401{
402 int ret = 1;
403
404 if (module) {
405 unsigned int cpu = get_cpu();
406 if (likely(module_is_live(module)))
407 local_inc(&module->ref[cpu].count);
408 else
409 ret = 0;
410 put_cpu();
411 }
412 return ret;
413}
414
Al Virof6a57032006-10-18 01:47:25 -0400415extern void module_put(struct module *module);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700416
417#else /*!CONFIG_MODULE_UNLOAD*/
418static inline int try_module_get(struct module *module)
419{
420 return !module || module_is_live(module);
421}
422static inline void module_put(struct module *module)
423{
424}
425static inline void __module_get(struct module *module)
426{
427}
428#define symbol_put(x) do { } while(0)
429#define symbol_put_addr(p) do { } while(0)
430
431#endif /* CONFIG_MODULE_UNLOAD */
432
433/* This is a #define so the string doesn't get put in every .o file */
434#define module_name(mod) \
435({ \
436 struct module *__mod = (mod); \
437 __mod ? __mod->name : "kernel"; \
438})
439
Rusty Russell6dd06c92008-01-29 17:13:22 -0500440/* For kallsyms to ask for address resolution. namebuf should be at
441 * least KSYM_NAME_LEN long: a pointer to namebuf is returned if
442 * found, otherwise NULL. */
Andrew Morton92dfc9d2008-02-08 04:18:43 -0800443const char *module_address_lookup(unsigned long addr,
Rusty Russell6dd06c92008-01-29 17:13:22 -0500444 unsigned long *symbolsize,
445 unsigned long *offset,
446 char **modname,
447 char *namebuf);
Alexey Dobriyan9d65cb42007-05-08 00:28:43 -0700448int lookup_module_symbol_name(unsigned long addr, char *symname);
Alexey Dobriyana5c43da2007-05-08 00:28:47 -0700449int lookup_module_symbol_attrs(unsigned long addr, unsigned long *size, unsigned long *offset, char *modname, char *name);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700450
451/* For extable.c to search modules' exception tables. */
452const struct exception_table_entry *search_module_extables(unsigned long addr);
453
454int register_module_notifier(struct notifier_block * nb);
455int unregister_module_notifier(struct notifier_block * nb);
456
457extern void print_modules(void);
458
Mathieu Desnoyersfb40bd72008-02-13 15:03:37 -0800459extern void module_update_markers(void);
Mathieu Desnoyers8256e472007-10-18 23:41:06 -0700460
Mathieu Desnoyers97e1c182008-07-18 12:16:16 -0400461extern void module_update_tracepoints(void);
462extern int module_get_iter_tracepoints(struct tracepoint_iter *iter);
463
Linus Torvalds1da177e2005-04-16 15:20:36 -0700464#else /* !CONFIG_MODULES... */
465#define EXPORT_SYMBOL(sym)
466#define EXPORT_SYMBOL_GPL(sym)
Greg Kroah-Hartman9f28bb72006-03-20 13:17:13 -0800467#define EXPORT_SYMBOL_GPL_FUTURE(sym)
Arjan van de Venf71d20e2006-06-28 04:26:45 -0700468#define EXPORT_UNUSED_SYMBOL(sym)
469#define EXPORT_UNUSED_SYMBOL_GPL(sym)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700470
471/* Given an address, look for it in the exception tables. */
472static inline const struct exception_table_entry *
473search_module_extables(unsigned long addr)
474{
475 return NULL;
476}
477
478/* Is this address in a module? */
479static inline struct module *module_text_address(unsigned long addr)
480{
481 return NULL;
482}
483
484/* Is this address in a module? (don't take a lock, we're oopsing) */
485static inline struct module *__module_text_address(unsigned long addr)
486{
487 return NULL;
488}
489
Ingo Molnar4d435f92006-07-03 00:24:24 -0700490static inline int is_module_address(unsigned long addr)
491{
492 return 0;
493}
494
Linus Torvalds1da177e2005-04-16 15:20:36 -0700495/* Get/put a kernel symbol (calls should be symmetric) */
496#define symbol_get(x) ({ extern typeof(x) x __attribute__((weak)); &(x); })
497#define symbol_put(x) do { } while(0)
498#define symbol_put_addr(x) do { } while(0)
499
500static inline void __module_get(struct module *module)
501{
502}
503
504static inline int try_module_get(struct module *module)
505{
506 return 1;
507}
508
509static inline void module_put(struct module *module)
510{
511}
512
513#define module_name(mod) "kernel"
514
Linus Torvalds1da177e2005-04-16 15:20:36 -0700515/* For kallsyms to ask for address resolution. NULL means not found. */
Andrew Morton92dfc9d2008-02-08 04:18:43 -0800516static inline const char *module_address_lookup(unsigned long addr,
Rusty Russell6dd06c92008-01-29 17:13:22 -0500517 unsigned long *symbolsize,
518 unsigned long *offset,
519 char **modname,
520 char *namebuf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700521{
522 return NULL;
523}
524
Alexey Dobriyan9d65cb42007-05-08 00:28:43 -0700525static inline int lookup_module_symbol_name(unsigned long addr, char *symname)
526{
527 return -ERANGE;
528}
529
Alexey Dobriyana5c43da2007-05-08 00:28:47 -0700530static inline int lookup_module_symbol_attrs(unsigned long addr, unsigned long *size, unsigned long *offset, char *modname, char *name)
531{
532 return -ERANGE;
533}
534
Alexey Dobriyanea078902007-05-08 00:28:39 -0700535static inline int module_get_kallsym(unsigned int symnum, unsigned long *value,
536 char *type, char *name,
537 char *module_name, int *exported)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700538{
Alexey Dobriyanea078902007-05-08 00:28:39 -0700539 return -ERANGE;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700540}
541
542static inline unsigned long module_kallsyms_lookup_name(const char *name)
543{
544 return 0;
545}
546
Linus Torvalds1da177e2005-04-16 15:20:36 -0700547static inline int register_module_notifier(struct notifier_block * nb)
548{
549 /* no events will happen anyway, so this can always succeed */
550 return 0;
551}
552
553static inline int unregister_module_notifier(struct notifier_block * nb)
554{
555 return 0;
556}
557
558#define module_put_and_exit(code) do_exit(code)
559
560static inline void print_modules(void)
561{
562}
563
Adrian Bunk1387d0d2008-02-14 19:31:20 -0800564static inline void module_update_markers(void)
Mathieu Desnoyers8256e472007-10-18 23:41:06 -0700565{
566}
567
Mathieu Desnoyers97e1c182008-07-18 12:16:16 -0400568static inline void module_update_tracepoints(void)
569{
570}
571
572static inline int module_get_iter_tracepoints(struct tracepoint_iter *iter)
573{
574 return 0;
575}
576
Randy Dunlapef665c12007-02-13 15:19:06 -0800577#endif /* CONFIG_MODULES */
578
Linus Torvalds1da177e2005-04-16 15:20:36 -0700579struct device_driver;
Randy Dunlapef665c12007-02-13 15:19:06 -0800580#ifdef CONFIG_SYSFS
Linus Torvalds1da177e2005-04-16 15:20:36 -0700581struct module;
582
Greg Kroah-Hartman7405c1e2007-11-01 10:39:50 -0700583extern struct kset *module_kset;
584extern struct kobj_type module_ktype;
585extern int module_sysfs_initialized;
Randy Dunlapef665c12007-02-13 15:19:06 -0800586
587int mod_sysfs_init(struct module *mod);
588int mod_sysfs_setup(struct module *mod,
589 struct kernel_param *kparam,
590 unsigned int num_params);
591int module_add_modinfo_attrs(struct module *mod);
592void module_remove_modinfo_attrs(struct module *mod);
593
594#else /* !CONFIG_SYSFS */
595
596static inline int mod_sysfs_init(struct module *mod)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700597{
Randy Dunlapef665c12007-02-13 15:19:06 -0800598 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700599}
600
Randy Dunlapef665c12007-02-13 15:19:06 -0800601static inline int mod_sysfs_setup(struct module *mod,
602 struct kernel_param *kparam,
603 unsigned int num_params)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700604{
Randy Dunlapef665c12007-02-13 15:19:06 -0800605 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700606}
607
Randy Dunlapef665c12007-02-13 15:19:06 -0800608static inline int module_add_modinfo_attrs(struct module *mod)
609{
610 return 0;
611}
612
613static inline void module_remove_modinfo_attrs(struct module *mod)
614{ }
615
616#endif /* CONFIG_SYSFS */
617
Linus Torvalds1da177e2005-04-16 15:20:36 -0700618#define symbol_request(x) try_then_request_module(symbol_get(x), "symbol:" #x)
619
620/* BELOW HERE ALL THESE ARE OBSOLETE AND WILL VANISH */
621
Linus Torvalds1da177e2005-04-16 15:20:36 -0700622#define __MODULE_STRING(x) __stringify(x)
623
Linus Torvalds1da177e2005-04-16 15:20:36 -0700624#endif /* _LINUX_MODULE_H */