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TOMOYO Linux Cross Reference
Linux/include/linux/module.h

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  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  */
  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 <linux/tracepoint.h>
 19 
 20 #include <linux/percpu.h>
 21 #include <asm/module.h>
 22 
 23 #include <trace/events/module.h>
 24 
 25 /* Not Yet Implemented */
 26 #define MODULE_SUPPORTED_DEVICE(name)
 27 
 28 /* Some toolchains use a `_' prefix for all user symbols. */
 29 #ifdef CONFIG_SYMBOL_PREFIX
 30 #define MODULE_SYMBOL_PREFIX CONFIG_SYMBOL_PREFIX
 31 #else
 32 #define MODULE_SYMBOL_PREFIX ""
 33 #endif
 34 
 35 #define MODULE_NAME_LEN MAX_PARAM_PREFIX_LEN
 36 
 37 struct kernel_symbol
 38 {
 39         unsigned long value;
 40         const char *name;
 41 };
 42 
 43 struct modversion_info
 44 {
 45         unsigned long crc;
 46         char name[MODULE_NAME_LEN];
 47 };
 48 
 49 struct module;
 50 
 51 struct module_attribute {
 52         struct attribute attr;
 53         ssize_t (*show)(struct module_attribute *, struct module *, char *);
 54         ssize_t (*store)(struct module_attribute *, struct module *,
 55                          const char *, size_t count);
 56         void (*setup)(struct module *, const char *);
 57         int (*test)(struct module *);
 58         void (*free)(struct module *);
 59 };
 60 
 61 struct module_version_attribute {
 62         struct module_attribute mattr;
 63         const char *module_name;
 64         const char *version;
 65 } __attribute__ ((__aligned__(sizeof(void *))));
 66 
 67 extern ssize_t __modver_version_show(struct module_attribute *,
 68                                      struct module *, char *);
 69 
 70 struct module_kobject
 71 {
 72         struct kobject kobj;
 73         struct module *mod;
 74         struct kobject *drivers_dir;
 75         struct module_param_attrs *mp;
 76 };
 77 
 78 /* These are either module local, or the kernel's dummy ones. */
 79 extern int init_module(void);
 80 extern void cleanup_module(void);
 81 
 82 /* Archs provide a method of finding the correct exception table. */
 83 struct exception_table_entry;
 84 
 85 const struct exception_table_entry *
 86 search_extable(const struct exception_table_entry *first,
 87                const struct exception_table_entry *last,
 88                unsigned long value);
 89 void sort_extable(struct exception_table_entry *start,
 90                   struct exception_table_entry *finish);
 91 void sort_main_extable(void);
 92 void trim_init_extable(struct module *m);
 93 
 94 #ifdef MODULE
 95 #define MODULE_GENERIC_TABLE(gtype,name)                        \
 96 extern const struct gtype##_id __mod_##gtype##_table            \
 97   __attribute__ ((unused, alias(__stringify(name))))
 98 
 99 extern struct module __this_module;
100 #define THIS_MODULE (&__this_module)
101 #else  /* !MODULE */
102 #define MODULE_GENERIC_TABLE(gtype,name)
103 #define THIS_MODULE ((struct module *)0)
104 #endif
105 
106 /* Generic info of form tag = "info" */
107 #define MODULE_INFO(tag, info) __MODULE_INFO(tag, tag, info)
108 
109 /* For userspace: you can also call me... */
110 #define MODULE_ALIAS(_alias) MODULE_INFO(alias, _alias)
111 
112 /*
113  * The following license idents are currently accepted as indicating free
114  * software modules
115  *
116  *      "GPL"                           [GNU Public License v2 or later]
117  *      "GPL v2"                        [GNU Public License v2]
118  *      "GPL and additional rights"     [GNU Public License v2 rights and more]
119  *      "Dual BSD/GPL"                  [GNU Public License v2
120  *                                       or BSD license choice]
121  *      "Dual MIT/GPL"                  [GNU Public License v2
122  *                                       or MIT license choice]
123  *      "Dual MPL/GPL"                  [GNU Public License v2
124  *                                       or Mozilla license choice]
125  *
126  * The following other idents are available
127  *
128  *      "Proprietary"                   [Non free products]
129  *
130  * There are dual licensed components, but when running with Linux it is the
131  * GPL that is relevant so this is a non issue. Similarly LGPL linked with GPL
132  * is a GPL combined work.
133  *
134  * This exists for several reasons
135  * 1.   So modinfo can show license info for users wanting to vet their setup 
136  *      is free
137  * 2.   So the community can ignore bug reports including proprietary modules
138  * 3.   So vendors can do likewise based on their own policies
139  */
140 #define MODULE_LICENSE(_license) MODULE_INFO(license, _license)
141 
142 /*
143  * Author(s), use "Name <email>" or just "Name", for multiple
144  * authors use multiple MODULE_AUTHOR() statements/lines.
145  */
146 #define MODULE_AUTHOR(_author) MODULE_INFO(author, _author)
147   
148 /* What your module does. */
149 #define MODULE_DESCRIPTION(_description) MODULE_INFO(description, _description)
150 
151 /* One for each parameter, describing how to use it.  Some files do
152    multiple of these per line, so can't just use MODULE_INFO. */
153 #define MODULE_PARM_DESC(_parm, desc) \
154         __MODULE_INFO(parm, _parm, #_parm ":" desc)
155 
156 #define MODULE_DEVICE_TABLE(type,name)          \
157   MODULE_GENERIC_TABLE(type##_device,name)
158 
159 /* Version of form [<epoch>:]<version>[-<extra-version>].
160    Or for CVS/RCS ID version, everything but the number is stripped.
161   <epoch>: A (small) unsigned integer which allows you to start versions
162            anew. If not mentioned, it's zero.  eg. "2:1.0" is after
163            "1:2.0".
164   <version>: The <version> may contain only alphanumerics and the
165            character `.'.  Ordered by numeric sort for numeric parts,
166            ascii sort for ascii parts (as per RPM or DEB algorithm).
167   <extraversion>: Like <version>, but inserted for local
168            customizations, eg "rh3" or "rusty1".
169 
170   Using this automatically adds a checksum of the .c files and the
171   local headers in "srcversion".
172 */
173 
174 #if defined(MODULE) || !defined(CONFIG_SYSFS)
175 #define MODULE_VERSION(_version) MODULE_INFO(version, _version)
176 #else
177 #define MODULE_VERSION(_version)                                        \
178         static struct module_version_attribute ___modver_attr = {       \
179                 .mattr  = {                                             \
180                         .attr   = {                                     \
181                                 .name   = "version",                    \
182                                 .mode   = S_IRUGO,                      \
183                         },                                              \
184                         .show   = __modver_version_show,                \
185                 },                                                      \
186                 .module_name    = KBUILD_MODNAME,                       \
187                 .version        = _version,                             \
188         };                                                              \
189         static const struct module_version_attribute                    \
190         __used __attribute__ ((__section__ ("__modver")))               \
191         * __moduleparam_const __modver_attr = &___modver_attr
192 #endif
193 
194 /* Optional firmware file (or files) needed by the module
195  * format is simply firmware file name.  Multiple firmware
196  * files require multiple MODULE_FIRMWARE() specifiers */
197 #define MODULE_FIRMWARE(_firmware) MODULE_INFO(firmware, _firmware)
198 
199 /* Given an address, look for it in the exception tables */
200 const struct exception_table_entry *search_exception_tables(unsigned long add);
201 
202 struct notifier_block;
203 
204 #ifdef CONFIG_MODULES
205 
206 extern int modules_disabled; /* for sysctl */
207 /* Get/put a kernel symbol (calls must be symmetric) */
208 void *__symbol_get(const char *symbol);
209 void *__symbol_get_gpl(const char *symbol);
210 #define symbol_get(x) ((typeof(&x))(__symbol_get(MODULE_SYMBOL_PREFIX #x)))
211 
212 /* modules using other modules: kdb wants to see this. */
213 struct module_use {
214         struct list_head source_list;
215         struct list_head target_list;
216         struct module *source, *target;
217 };
218 
219 #ifndef __GENKSYMS__
220 #ifdef CONFIG_MODVERSIONS
221 /* Mark the CRC weak since genksyms apparently decides not to
222  * generate a checksums for some symbols */
223 #define __CRC_SYMBOL(sym, sec)                                  \
224         extern void *__crc_##sym __attribute__((weak));         \
225         static const unsigned long __kcrctab_##sym              \
226         __used                                                  \
227         __attribute__((section("___kcrctab" sec "+" #sym), unused))     \
228         = (unsigned long) &__crc_##sym;
229 #else
230 #define __CRC_SYMBOL(sym, sec)
231 #endif
232 
233 /* For every exported symbol, place a struct in the __ksymtab section */
234 #define __EXPORT_SYMBOL(sym, sec)                               \
235         extern typeof(sym) sym;                                 \
236         __CRC_SYMBOL(sym, sec)                                  \
237         static const char __kstrtab_##sym[]                     \
238         __attribute__((section("__ksymtab_strings"), aligned(1))) \
239         = MODULE_SYMBOL_PREFIX #sym;                            \
240         static const struct kernel_symbol __ksymtab_##sym       \
241         __used                                                  \
242         __attribute__((section("___ksymtab" sec "+" #sym), unused))     \
243         = { (unsigned long)&sym, __kstrtab_##sym }
244 
245 #define EXPORT_SYMBOL(sym)                                      \
246         __EXPORT_SYMBOL(sym, "")
247 
248 #define EXPORT_SYMBOL_GPL(sym)                                  \
249         __EXPORT_SYMBOL(sym, "_gpl")
250 
251 #define EXPORT_SYMBOL_GPL_FUTURE(sym)                           \
252         __EXPORT_SYMBOL(sym, "_gpl_future")
253 
254 
255 #ifdef CONFIG_UNUSED_SYMBOLS
256 #define EXPORT_UNUSED_SYMBOL(sym) __EXPORT_SYMBOL(sym, "_unused")
257 #define EXPORT_UNUSED_SYMBOL_GPL(sym) __EXPORT_SYMBOL(sym, "_unused_gpl")
258 #else
259 #define EXPORT_UNUSED_SYMBOL(sym)
260 #define EXPORT_UNUSED_SYMBOL_GPL(sym)
261 #endif
262 
263 #endif
264 
265 enum module_state
266 {
267         MODULE_STATE_LIVE,
268         MODULE_STATE_COMING,
269         MODULE_STATE_GOING,
270 };
271 
272 struct module
273 {
274         enum module_state state;
275 
276         /* Member of list of modules */
277         struct list_head list;
278 
279         /* Unique handle for this module */
280         char name[MODULE_NAME_LEN];
281 
282         /* Sysfs stuff. */
283         struct module_kobject mkobj;
284         struct module_attribute *modinfo_attrs;
285         const char *version;
286         const char *srcversion;
287         struct kobject *holders_dir;
288 
289         /* Exported symbols */
290         const struct kernel_symbol *syms;
291         const unsigned long *crcs;
292         unsigned int num_syms;
293 
294         /* Kernel parameters. */
295         struct kernel_param *kp;
296         unsigned int num_kp;
297 
298         /* GPL-only exported symbols. */
299         unsigned int num_gpl_syms;
300         const struct kernel_symbol *gpl_syms;
301         const unsigned long *gpl_crcs;
302 
303 #ifdef CONFIG_UNUSED_SYMBOLS
304         /* unused exported symbols. */
305         const struct kernel_symbol *unused_syms;
306         const unsigned long *unused_crcs;
307         unsigned int num_unused_syms;
308 
309         /* GPL-only, unused exported symbols. */
310         unsigned int num_unused_gpl_syms;
311         const struct kernel_symbol *unused_gpl_syms;
312         const unsigned long *unused_gpl_crcs;
313 #endif
314 
315         /* symbols that will be GPL-only in the near future. */
316         const struct kernel_symbol *gpl_future_syms;
317         const unsigned long *gpl_future_crcs;
318         unsigned int num_gpl_future_syms;
319 
320         /* Exception table */
321         unsigned int num_exentries;
322         struct exception_table_entry *extable;
323 
324         /* Startup function. */
325         int (*init)(void);
326 
327         /* If this is non-NULL, vfree after init() returns */
328         void *module_init;
329 
330         /* Here is the actual code + data, vfree'd on unload. */
331         void *module_core;
332 
333         /* Here are the sizes of the init and core sections */
334         unsigned int init_size, core_size;
335 
336         /* The size of the executable code in each section.  */
337         unsigned int init_text_size, core_text_size;
338 
339         /* Size of RO sections of the module (text+rodata) */
340         unsigned int init_ro_size, core_ro_size;
341 
342         /* Arch-specific module values */
343         struct mod_arch_specific arch;
344 
345         unsigned int taints;    /* same bits as kernel:tainted */
346 
347 #ifdef CONFIG_GENERIC_BUG
348         /* Support for BUG */
349         unsigned num_bugs;
350         struct list_head bug_list;
351         struct bug_entry *bug_table;
352 #endif
353 
354 #ifdef CONFIG_KALLSYMS
355         /*
356          * We keep the symbol and string tables for kallsyms.
357          * The core_* fields below are temporary, loader-only (they
358          * could really be discarded after module init).
359          */
360         Elf_Sym *symtab, *core_symtab;
361         unsigned int num_symtab, core_num_syms;
362         char *strtab, *core_strtab;
363 
364         /* Section attributes */
365         struct module_sect_attrs *sect_attrs;
366 
367         /* Notes attributes */
368         struct module_notes_attrs *notes_attrs;
369 #endif
370 
371         /* The command line arguments (may be mangled).  People like
372            keeping pointers to this stuff */
373         char *args;
374 
375 #ifdef CONFIG_SMP
376         /* Per-cpu data. */
377         void __percpu *percpu;
378         unsigned int percpu_size;
379 #endif
380 
381 #ifdef CONFIG_TRACEPOINTS
382         unsigned int num_tracepoints;
383         struct tracepoint * const *tracepoints_ptrs;
384 #endif
385 #ifdef HAVE_JUMP_LABEL
386         struct jump_entry *jump_entries;
387         unsigned int num_jump_entries;
388 #endif
389 #ifdef CONFIG_TRACING
390         unsigned int num_trace_bprintk_fmt;
391         const char **trace_bprintk_fmt_start;
392 #endif
393 #ifdef CONFIG_EVENT_TRACING
394         struct ftrace_event_call **trace_events;
395         unsigned int num_trace_events;
396 #endif
397 #ifdef CONFIG_FTRACE_MCOUNT_RECORD
398         unsigned int num_ftrace_callsites;
399         unsigned long *ftrace_callsites;
400 #endif
401 
402 #ifdef CONFIG_MODULE_UNLOAD
403         /* What modules depend on me? */
404         struct list_head source_list;
405         /* What modules do I depend on? */
406         struct list_head target_list;
407 
408         /* Who is waiting for us to be unloaded */
409         struct task_struct *waiter;
410 
411         /* Destruction function. */
412         void (*exit)(void);
413 
414         struct module_ref {
415                 unsigned int incs;
416                 unsigned int decs;
417         } __percpu *refptr;
418 #endif
419 
420 #ifdef CONFIG_CONSTRUCTORS
421         /* Constructor functions. */
422         ctor_fn_t *ctors;
423         unsigned int num_ctors;
424 #endif
425 };
426 #ifndef MODULE_ARCH_INIT
427 #define MODULE_ARCH_INIT {}
428 #endif
429 
430 extern struct mutex module_mutex;
431 
432 /* FIXME: It'd be nice to isolate modules during init, too, so they
433    aren't used before they (may) fail.  But presently too much code
434    (IDE & SCSI) require entry into the module during init.*/
435 static inline int module_is_live(struct module *mod)
436 {
437         return mod->state != MODULE_STATE_GOING;
438 }
439 
440 struct module *__module_text_address(unsigned long addr);
441 struct module *__module_address(unsigned long addr);
442 bool is_module_address(unsigned long addr);
443 bool is_module_percpu_address(unsigned long addr);
444 bool is_module_text_address(unsigned long addr);
445 
446 static inline int within_module_core(unsigned long addr, struct module *mod)
447 {
448         return (unsigned long)mod->module_core <= addr &&
449                addr < (unsigned long)mod->module_core + mod->core_size;
450 }
451 
452 static inline int within_module_init(unsigned long addr, struct module *mod)
453 {
454         return (unsigned long)mod->module_init <= addr &&
455                addr < (unsigned long)mod->module_init + mod->init_size;
456 }
457 
458 /* Search for module by name: must hold module_mutex. */
459 struct module *find_module(const char *name);
460 
461 struct symsearch {
462         const struct kernel_symbol *start, *stop;
463         const unsigned long *crcs;
464         enum {
465                 NOT_GPL_ONLY,
466                 GPL_ONLY,
467                 WILL_BE_GPL_ONLY,
468         } licence;
469         bool unused;
470 };
471 
472 /* Search for an exported symbol by name. */
473 const struct kernel_symbol *find_symbol(const char *name,
474                                         struct module **owner,
475                                         const unsigned long **crc,
476                                         bool gplok,
477                                         bool warn);
478 
479 /* Walk the exported symbol table */
480 bool each_symbol_section(bool (*fn)(const struct symsearch *arr,
481                                     struct module *owner,
482                                     void *data), void *data);
483 
484 /* Returns 0 and fills in value, defined and namebuf, or -ERANGE if
485    symnum out of range. */
486 int module_get_kallsym(unsigned int symnum, unsigned long *value, char *type,
487                         char *name, char *module_name, int *exported);
488 
489 /* Look for this name: can be of form module:name. */
490 unsigned long module_kallsyms_lookup_name(const char *name);
491 
492 int module_kallsyms_on_each_symbol(int (*fn)(void *, const char *,
493                                              struct module *, unsigned long),
494                                    void *data);
495 
496 extern void __module_put_and_exit(struct module *mod, long code)
497         __attribute__((noreturn));
498 #define module_put_and_exit(code) __module_put_and_exit(THIS_MODULE, code);
499 
500 #ifdef CONFIG_MODULE_UNLOAD
501 unsigned int module_refcount(struct module *mod);
502 void __symbol_put(const char *symbol);
503 #define symbol_put(x) __symbol_put(MODULE_SYMBOL_PREFIX #x)
504 void symbol_put_addr(void *addr);
505 
506 /* Sometimes we know we already have a refcount, and it's easier not
507    to handle the error case (which only happens with rmmod --wait). */
508 static inline void __module_get(struct module *module)
509 {
510         if (module) {
511                 preempt_disable();
512                 __this_cpu_inc(module->refptr->incs);
513                 trace_module_get(module, _THIS_IP_);
514                 preempt_enable();
515         }
516 }
517 
518 static inline int try_module_get(struct module *module)
519 {
520         int ret = 1;
521 
522         if (module) {
523                 preempt_disable();
524 
525                 if (likely(module_is_live(module))) {
526                         __this_cpu_inc(module->refptr->incs);
527                         trace_module_get(module, _THIS_IP_);
528                 } else
529                         ret = 0;
530 
531                 preempt_enable();
532         }
533         return ret;
534 }
535 
536 extern void module_put(struct module *module);
537 
538 #else /*!CONFIG_MODULE_UNLOAD*/
539 static inline int try_module_get(struct module *module)
540 {
541         return !module || module_is_live(module);
542 }
543 static inline void module_put(struct module *module)
544 {
545 }
546 static inline void __module_get(struct module *module)
547 {
548 }
549 #define symbol_put(x) do { } while(0)
550 #define symbol_put_addr(p) do { } while(0)
551 
552 #endif /* CONFIG_MODULE_UNLOAD */
553 int ref_module(struct module *a, struct module *b);
554 
555 /* This is a #define so the string doesn't get put in every .o file */
556 #define module_name(mod)                        \
557 ({                                              \
558         struct module *__mod = (mod);           \
559         __mod ? __mod->name : "kernel";         \
560 })
561 
562 /* For kallsyms to ask for address resolution.  namebuf should be at
563  * least KSYM_NAME_LEN long: a pointer to namebuf is returned if
564  * found, otherwise NULL. */
565 const char *module_address_lookup(unsigned long addr,
566                             unsigned long *symbolsize,
567                             unsigned long *offset,
568                             char **modname,
569                             char *namebuf);
570 int lookup_module_symbol_name(unsigned long addr, char *symname);
571 int lookup_module_symbol_attrs(unsigned long addr, unsigned long *size, unsigned long *offset, char *modname, char *name);
572 
573 /* For extable.c to search modules' exception tables. */
574 const struct exception_table_entry *search_module_extables(unsigned long addr);
575 
576 int register_module_notifier(struct notifier_block * nb);
577 int unregister_module_notifier(struct notifier_block * nb);
578 
579 extern void print_modules(void);
580 
581 extern void module_update_tracepoints(void);
582 extern int module_get_iter_tracepoints(struct tracepoint_iter *iter);
583 
584 #else /* !CONFIG_MODULES... */
585 #define EXPORT_SYMBOL(sym)
586 #define EXPORT_SYMBOL_GPL(sym)
587 #define EXPORT_SYMBOL_GPL_FUTURE(sym)
588 #define EXPORT_UNUSED_SYMBOL(sym)
589 #define EXPORT_UNUSED_SYMBOL_GPL(sym)
590 
591 /* Given an address, look for it in the exception tables. */
592 static inline const struct exception_table_entry *
593 search_module_extables(unsigned long addr)
594 {
595         return NULL;
596 }
597 
598 static inline struct module *__module_address(unsigned long addr)
599 {
600         return NULL;
601 }
602 
603 static inline struct module *__module_text_address(unsigned long addr)
604 {
605         return NULL;
606 }
607 
608 static inline bool is_module_address(unsigned long addr)
609 {
610         return false;
611 }
612 
613 static inline bool is_module_percpu_address(unsigned long addr)
614 {
615         return false;
616 }
617 
618 static inline bool is_module_text_address(unsigned long addr)
619 {
620         return false;
621 }
622 
623 /* Get/put a kernel symbol (calls should be symmetric) */
624 #define symbol_get(x) ({ extern typeof(x) x __attribute__((weak)); &(x); })
625 #define symbol_put(x) do { } while(0)
626 #define symbol_put_addr(x) do { } while(0)
627 
628 static inline void __module_get(struct module *module)
629 {
630 }
631 
632 static inline int try_module_get(struct module *module)
633 {
634         return 1;
635 }
636 
637 static inline void module_put(struct module *module)
638 {
639 }
640 
641 #define module_name(mod) "kernel"
642 
643 /* For kallsyms to ask for address resolution.  NULL means not found. */
644 static inline const char *module_address_lookup(unsigned long addr,
645                                           unsigned long *symbolsize,
646                                           unsigned long *offset,
647                                           char **modname,
648                                           char *namebuf)
649 {
650         return NULL;
651 }
652 
653 static inline int lookup_module_symbol_name(unsigned long addr, char *symname)
654 {
655         return -ERANGE;
656 }
657 
658 static inline int lookup_module_symbol_attrs(unsigned long addr, unsigned long *size, unsigned long *offset, char *modname, char *name)
659 {
660         return -ERANGE;
661 }
662 
663 static inline int module_get_kallsym(unsigned int symnum, unsigned long *value,
664                                         char *type, char *name,
665                                         char *module_name, int *exported)
666 {
667         return -ERANGE;
668 }
669 
670 static inline unsigned long module_kallsyms_lookup_name(const char *name)
671 {
672         return 0;
673 }
674 
675 static inline int module_kallsyms_on_each_symbol(int (*fn)(void *, const char *,
676                                                            struct module *,
677                                                            unsigned long),
678                                                  void *data)
679 {
680         return 0;
681 }
682 
683 static inline int register_module_notifier(struct notifier_block * nb)
684 {
685         /* no events will happen anyway, so this can always succeed */
686         return 0;
687 }
688 
689 static inline int unregister_module_notifier(struct notifier_block * nb)
690 {
691         return 0;
692 }
693 
694 #define module_put_and_exit(code) do_exit(code)
695 
696 static inline void print_modules(void)
697 {
698 }
699 
700 static inline void module_update_tracepoints(void)
701 {
702 }
703 
704 static inline int module_get_iter_tracepoints(struct tracepoint_iter *iter)
705 {
706         return 0;
707 }
708 #endif /* CONFIG_MODULES */
709 
710 #ifdef CONFIG_SYSFS
711 extern struct kset *module_kset;
712 extern struct kobj_type module_ktype;
713 extern int module_sysfs_initialized;
714 #endif /* CONFIG_SYSFS */
715 
716 #define symbol_request(x) try_then_request_module(symbol_get(x), "symbol:" #x)
717 
718 /* BELOW HERE ALL THESE ARE OBSOLETE AND WILL VANISH */
719 
720 #define __MODULE_STRING(x) __stringify(x)
721 
722 #ifdef CONFIG_DEBUG_SET_MODULE_RONX
723 extern void set_all_modules_text_rw(void);
724 extern void set_all_modules_text_ro(void);
725 #else
726 static inline void set_all_modules_text_rw(void) { }
727 static inline void set_all_modules_text_ro(void) { }
728 #endif
729 
730 #ifdef CONFIG_GENERIC_BUG
731 void module_bug_finalize(const Elf_Ehdr *, const Elf_Shdr *,
732                          struct module *);
733 void module_bug_cleanup(struct module *);
734 
735 #else   /* !CONFIG_GENERIC_BUG */
736 
737 static inline void module_bug_finalize(const Elf_Ehdr *hdr,
738                                         const Elf_Shdr *sechdrs,
739                                         struct module *mod)
740 {
741 }
742 static inline void module_bug_cleanup(struct module *mod) {}
743 #endif  /* CONFIG_GENERIC_BUG */
744 
745 #endif /* _LINUX_MODULE_H */
746 

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