blob: c2917ffe8bf11a024c34eb8729a9e87872bcfb5d [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * kobject.c - library routines for handling generic kernel objects
3 *
4 * Copyright (c) 2002-2003 Patrick Mochel <mochel@osdl.org>
5 *
6 * This file is released under the GPLv2.
7 *
8 *
9 * Please see the file Documentation/kobject.txt for critical information
10 * about using the kobject interface.
11 */
12
13#include <linux/kobject.h>
14#include <linux/string.h>
15#include <linux/module.h>
16#include <linux/stat.h>
Tim Schmielau4e57b682005-10-30 15:03:48 -080017#include <linux/slab.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070018
19/**
20 * populate_dir - populate directory with attributes.
21 * @kobj: object we're working on.
22 *
23 * Most subsystems have a set of default attributes that
24 * are associated with an object that registers with them.
25 * This is a helper called during object registration that
26 * loops through the default attributes of the subsystem
27 * and creates attributes files for them in sysfs.
28 *
29 */
30
31static int populate_dir(struct kobject * kobj)
32{
33 struct kobj_type * t = get_ktype(kobj);
34 struct attribute * attr;
35 int error = 0;
36 int i;
37
38 if (t && t->default_attrs) {
39 for (i = 0; (attr = t->default_attrs[i]) != NULL; i++) {
40 if ((error = sysfs_create_file(kobj,attr)))
41 break;
42 }
43 }
44 return error;
45}
46
Eric W. Biedermanb592fcf2007-01-24 12:35:52 -070047static int create_dir(struct kobject * kobj, struct dentry *shadow_parent)
Linus Torvalds1da177e2005-04-16 15:20:36 -070048{
49 int error = 0;
50 if (kobject_name(kobj)) {
Eric W. Biedermanb592fcf2007-01-24 12:35:52 -070051 error = sysfs_create_dir(kobj, shadow_parent);
Linus Torvalds1da177e2005-04-16 15:20:36 -070052 if (!error) {
53 if ((error = populate_dir(kobj)))
54 sysfs_remove_dir(kobj);
55 }
56 }
57 return error;
58}
59
60static inline struct kobject * to_kobj(struct list_head * entry)
61{
62 return container_of(entry,struct kobject,entry);
63}
64
65static int get_kobj_path_length(struct kobject *kobj)
66{
67 int length = 1;
68 struct kobject * parent = kobj;
69
70 /* walk up the ancestors until we hit the one pointing to the
71 * root.
72 * Add 1 to strlen for leading '/' of each level.
73 */
74 do {
Chuck Ebbertb365b3d2006-01-12 20:02:00 -050075 if (kobject_name(parent) == NULL)
76 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -070077 length += strlen(kobject_name(parent)) + 1;
78 parent = parent->parent;
79 } while (parent);
80 return length;
81}
82
83static void fill_kobj_path(struct kobject *kobj, char *path, int length)
84{
85 struct kobject * parent;
86
87 --length;
88 for (parent = kobj; parent; parent = parent->parent) {
89 int cur = strlen(kobject_name(parent));
90 /* back up enough to print this name with '/' */
91 length -= cur;
92 strncpy (path + length, kobject_name(parent), cur);
93 *(path + --length) = '/';
94 }
95
96 pr_debug("%s: path = '%s'\n",__FUNCTION__,path);
97}
98
99/**
100 * kobject_get_path - generate and return the path associated with a given kobj
101 * and kset pair. The result must be freed by the caller with kfree().
102 *
103 * @kobj: kobject in question, with which to build the path
104 * @gfp_mask: the allocation type used to allocate the path
105 */
Al Virofd4f2df2005-10-21 03:18:50 -0400106char *kobject_get_path(struct kobject *kobj, gfp_t gfp_mask)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700107{
108 char *path;
109 int len;
110
111 len = get_kobj_path_length(kobj);
Chuck Ebbertb365b3d2006-01-12 20:02:00 -0500112 if (len == 0)
113 return NULL;
Burman Yan4668edc2006-12-06 20:38:51 -0800114 path = kzalloc(len, gfp_mask);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700115 if (!path)
116 return NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700117 fill_kobj_path(kobj, path, len);
118
119 return path;
120}
Dmitry Torokhov80fc9f52006-10-11 01:43:58 -0400121EXPORT_SYMBOL_GPL(kobject_get_path);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700122
123/**
124 * kobject_init - initialize object.
125 * @kobj: object in question.
126 */
127void kobject_init(struct kobject * kobj)
128{
Greg Kroah-Hartman31b90252007-01-18 12:23:51 -0800129 if (!kobj)
130 return;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700131 kref_init(&kobj->kref);
132 INIT_LIST_HEAD(&kobj->entry);
NeilBrown4508a7a2006-03-20 17:53:53 +1100133 init_waitqueue_head(&kobj->poll);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700134 kobj->kset = kset_get(kobj->kset);
135}
136
137
138/**
139 * unlink - remove kobject from kset list.
140 * @kobj: kobject.
141 *
142 * Remove the kobject from the kset list and decrement
143 * its parent's refcount.
144 * This is separated out, so we can use it in both
145 * kobject_del() and kobject_add() on error.
146 */
147
148static void unlink(struct kobject * kobj)
149{
150 if (kobj->kset) {
151 spin_lock(&kobj->kset->list_lock);
152 list_del_init(&kobj->entry);
153 spin_unlock(&kobj->kset->list_lock);
154 }
155 kobject_put(kobj);
156}
157
158/**
159 * kobject_add - add an object to the hierarchy.
160 * @kobj: object.
Eric W. Biedermanb592fcf2007-01-24 12:35:52 -0700161 * @shadow_parent: sysfs directory to add to.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700162 */
163
Eric W. Biedermanb592fcf2007-01-24 12:35:52 -0700164int kobject_shadow_add(struct kobject * kobj, struct dentry *shadow_parent)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700165{
166 int error = 0;
167 struct kobject * parent;
168
169 if (!(kobj = kobject_get(kobj)))
170 return -ENOENT;
171 if (!kobj->k_name)
172 kobj->k_name = kobj->name;
Greg Kroah-Hartmanc171fef2006-01-20 14:08:59 -0800173 if (!kobj->k_name) {
174 pr_debug("kobject attempted to be registered with no name!\n");
175 WARN_ON(1);
176 return -EINVAL;
177 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700178 parent = kobject_get(kobj->parent);
179
180 pr_debug("kobject %s: registering. parent: %s, set: %s\n",
181 kobject_name(kobj), parent ? kobject_name(parent) : "<NULL>",
182 kobj->kset ? kobj->kset->kobj.name : "<NULL>" );
183
184 if (kobj->kset) {
185 spin_lock(&kobj->kset->list_lock);
186
187 if (!parent)
188 parent = kobject_get(&kobj->kset->kobj);
189
190 list_add_tail(&kobj->entry,&kobj->kset->list);
191 spin_unlock(&kobj->kset->list_lock);
192 }
193 kobj->parent = parent;
194
Eric W. Biedermanb592fcf2007-01-24 12:35:52 -0700195 error = create_dir(kobj, shadow_parent);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700196 if (error) {
197 /* unlink does the kobject_put() for us */
198 unlink(kobj);
Mariusz Kozlowskib067db42007-01-02 13:44:44 +0100199 kobject_put(parent);
Greg Kroah-Hartmandcd0da02006-03-20 13:17:13 -0800200
201 /* be noisy on error issues */
202 if (error == -EEXIST)
Greg Kroah-Hartman183bd5b2006-05-18 10:39:21 -0700203 printk("kobject_add failed for %s with -EEXIST, "
Greg Kroah-Hartmandcd0da02006-03-20 13:17:13 -0800204 "don't try to register things with the "
205 "same name in the same directory.\n",
206 kobject_name(kobj));
207 else
Greg Kroah-Hartman183bd5b2006-05-18 10:39:21 -0700208 printk("kobject_add failed for %s (%d)\n",
Greg Kroah-Hartmandcd0da02006-03-20 13:17:13 -0800209 kobject_name(kobj), error);
Greg Kroah-Hartman183bd5b2006-05-18 10:39:21 -0700210 dump_stack();
Linus Torvalds1da177e2005-04-16 15:20:36 -0700211 }
212
213 return error;
214}
215
Eric W. Biedermanb592fcf2007-01-24 12:35:52 -0700216/**
217 * kobject_add - add an object to the hierarchy.
218 * @kobj: object.
219 */
220int kobject_add(struct kobject * kobj)
221{
222 return kobject_shadow_add(kobj, NULL);
223}
224
Linus Torvalds1da177e2005-04-16 15:20:36 -0700225
226/**
227 * kobject_register - initialize and add an object.
228 * @kobj: object in question.
229 */
230
231int kobject_register(struct kobject * kobj)
232{
Greg Kroah-Hartmandcd0da02006-03-20 13:17:13 -0800233 int error = -EINVAL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700234 if (kobj) {
235 kobject_init(kobj);
236 error = kobject_add(kobj);
Greg Kroah-Hartmandcd0da02006-03-20 13:17:13 -0800237 if (!error)
Kay Sievers312c0042005-11-16 09:00:00 +0100238 kobject_uevent(kobj, KOBJ_ADD);
Greg Kroah-Hartmandcd0da02006-03-20 13:17:13 -0800239 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700240 return error;
241}
242
243
244/**
245 * kobject_set_name - Set the name of an object
246 * @kobj: object.
Martin Waitz67be2dd2005-05-01 08:59:26 -0700247 * @fmt: format string used to build the name
Linus Torvalds1da177e2005-04-16 15:20:36 -0700248 *
249 * If strlen(name) >= KOBJ_NAME_LEN, then use a dynamically allocated
250 * string that @kobj->k_name points to. Otherwise, use the static
251 * @kobj->name array.
252 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700253int kobject_set_name(struct kobject * kobj, const char * fmt, ...)
254{
255 int error = 0;
256 int limit = KOBJ_NAME_LEN;
257 int need;
258 va_list args;
259 char * name;
260
261 /*
262 * First, try the static array
263 */
264 va_start(args,fmt);
265 need = vsnprintf(kobj->name,limit,fmt,args);
266 va_end(args);
267 if (need < limit)
268 name = kobj->name;
269 else {
270 /*
271 * Need more space? Allocate it and try again
272 */
273 limit = need + 1;
274 name = kmalloc(limit,GFP_KERNEL);
275 if (!name) {
276 error = -ENOMEM;
277 goto Done;
278 }
279 va_start(args,fmt);
280 need = vsnprintf(name,limit,fmt,args);
281 va_end(args);
282
283 /* Still? Give up. */
284 if (need >= limit) {
285 kfree(name);
286 error = -EFAULT;
287 goto Done;
288 }
289 }
290
291 /* Free the old name, if necessary. */
292 if (kobj->k_name && kobj->k_name != kobj->name)
293 kfree(kobj->k_name);
294
295 /* Now, set the new name */
296 kobj->k_name = name;
297 Done:
298 return error;
299}
300
301EXPORT_SYMBOL(kobject_set_name);
302
303
304/**
305 * kobject_rename - change the name of an object
306 * @kobj: object in question.
307 * @new_name: object's new name
308 */
309
Dmitry Torokhovf3b4f3c2005-04-26 02:32:00 -0500310int kobject_rename(struct kobject * kobj, const char *new_name)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700311{
312 int error = 0;
313
314 kobj = kobject_get(kobj);
315 if (!kobj)
316 return -EINVAL;
Eric W. Biedermanb592fcf2007-01-24 12:35:52 -0700317 if (!kobj->parent)
318 return -EINVAL;
319 error = sysfs_rename_dir(kobj, kobj->parent->dentry, new_name);
320 kobject_put(kobj);
321
322 return error;
323}
324
325/**
326 * kobject_rename - change the name of an object
327 * @kobj: object in question.
328 * @new_name: object's new name
329 */
330
331int kobject_shadow_rename(struct kobject * kobj, struct dentry *new_parent,
332 const char *new_name)
333{
334 int error = 0;
335
336 kobj = kobject_get(kobj);
337 if (!kobj)
338 return -EINVAL;
339 error = sysfs_rename_dir(kobj, new_parent, new_name);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700340 kobject_put(kobj);
341
342 return error;
343}
344
345/**
Cornelia Huck8a824722006-11-20 17:07:51 +0100346 * kobject_move - move object to another parent
347 * @kobj: object in question.
Cornelia Huckc744aea2007-01-08 20:16:44 +0100348 * @new_parent: object's new parent (can be NULL)
Cornelia Huck8a824722006-11-20 17:07:51 +0100349 */
350
351int kobject_move(struct kobject *kobj, struct kobject *new_parent)
352{
353 int error;
354 struct kobject *old_parent;
355 const char *devpath = NULL;
356 char *devpath_string = NULL;
357 char *envp[2];
358
359 kobj = kobject_get(kobj);
360 if (!kobj)
361 return -EINVAL;
362 new_parent = kobject_get(new_parent);
363 if (!new_parent) {
Cornelia Huckc744aea2007-01-08 20:16:44 +0100364 if (kobj->kset)
365 new_parent = kobject_get(&kobj->kset->kobj);
Cornelia Huck8a824722006-11-20 17:07:51 +0100366 }
367 /* old object path */
368 devpath = kobject_get_path(kobj, GFP_KERNEL);
369 if (!devpath) {
370 error = -ENOMEM;
371 goto out;
372 }
373 devpath_string = kmalloc(strlen(devpath) + 15, GFP_KERNEL);
374 if (!devpath_string) {
375 error = -ENOMEM;
376 goto out;
377 }
378 sprintf(devpath_string, "DEVPATH_OLD=%s", devpath);
379 envp[0] = devpath_string;
380 envp[1] = NULL;
381 error = sysfs_move_dir(kobj, new_parent);
382 if (error)
383 goto out;
384 old_parent = kobj->parent;
385 kobj->parent = new_parent;
386 kobject_put(old_parent);
387 kobject_uevent_env(kobj, KOBJ_MOVE, envp);
388out:
389 kobject_put(kobj);
390 kfree(devpath_string);
391 kfree(devpath);
392 return error;
393}
394
395/**
Linus Torvalds1da177e2005-04-16 15:20:36 -0700396 * kobject_del - unlink kobject from hierarchy.
397 * @kobj: object.
398 */
399
400void kobject_del(struct kobject * kobj)
401{
Greg Kroah-Hartman31b90252007-01-18 12:23:51 -0800402 if (!kobj)
403 return;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700404 sysfs_remove_dir(kobj);
405 unlink(kobj);
406}
407
408/**
409 * kobject_unregister - remove object from hierarchy and decrement refcount.
410 * @kobj: object going away.
411 */
412
413void kobject_unregister(struct kobject * kobj)
414{
Greg Kroah-Hartman31b90252007-01-18 12:23:51 -0800415 if (!kobj)
416 return;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700417 pr_debug("kobject %s: unregistering\n",kobject_name(kobj));
Kay Sievers312c0042005-11-16 09:00:00 +0100418 kobject_uevent(kobj, KOBJ_REMOVE);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700419 kobject_del(kobj);
420 kobject_put(kobj);
421}
422
423/**
424 * kobject_get - increment refcount for object.
425 * @kobj: object.
426 */
427
428struct kobject * kobject_get(struct kobject * kobj)
429{
430 if (kobj)
431 kref_get(&kobj->kref);
432 return kobj;
433}
434
435/**
436 * kobject_cleanup - free kobject resources.
437 * @kobj: object.
438 */
439
440void kobject_cleanup(struct kobject * kobj)
441{
442 struct kobj_type * t = get_ktype(kobj);
443 struct kset * s = kobj->kset;
444 struct kobject * parent = kobj->parent;
445
446 pr_debug("kobject %s: cleaning up\n",kobject_name(kobj));
447 if (kobj->k_name != kobj->name)
448 kfree(kobj->k_name);
449 kobj->k_name = NULL;
450 if (t && t->release)
451 t->release(kobj);
452 if (s)
453 kset_put(s);
Mariusz Kozlowskib067db42007-01-02 13:44:44 +0100454 kobject_put(parent);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700455}
456
457static void kobject_release(struct kref *kref)
458{
459 kobject_cleanup(container_of(kref, struct kobject, kref));
460}
461
462/**
463 * kobject_put - decrement refcount for object.
464 * @kobj: object.
465 *
466 * Decrement the refcount, and if 0, call kobject_cleanup().
467 */
468void kobject_put(struct kobject * kobj)
469{
470 if (kobj)
471 kref_put(&kobj->kref, kobject_release);
472}
473
474
Jun'ichi Nomura74231722006-03-13 17:14:25 -0500475static void dir_release(struct kobject *kobj)
476{
477 kfree(kobj);
478}
479
480static struct kobj_type dir_ktype = {
481 .release = dir_release,
482 .sysfs_ops = NULL,
483 .default_attrs = NULL,
484};
485
486/**
487 * kobject_add_dir - add sub directory of object.
488 * @parent: object in which a directory is created.
489 * @name: directory name.
490 *
491 * Add a plain directory object as child of given object.
492 */
493struct kobject *kobject_add_dir(struct kobject *parent, const char *name)
494{
495 struct kobject *k;
Randy Dunlap10188012006-07-11 20:49:41 -0700496 int ret;
Jun'ichi Nomura74231722006-03-13 17:14:25 -0500497
498 if (!parent)
499 return NULL;
500
501 k = kzalloc(sizeof(*k), GFP_KERNEL);
502 if (!k)
503 return NULL;
504
505 k->parent = parent;
506 k->ktype = &dir_ktype;
507 kobject_set_name(k, name);
Randy Dunlap10188012006-07-11 20:49:41 -0700508 ret = kobject_register(k);
509 if (ret < 0) {
510 printk(KERN_WARNING "kobject_add_dir: "
511 "kobject_register error: %d\n", ret);
512 kobject_del(k);
513 return NULL;
514 }
Jun'ichi Nomura74231722006-03-13 17:14:25 -0500515
516 return k;
517}
Jun'ichi Nomura74231722006-03-13 17:14:25 -0500518
Linus Torvalds1da177e2005-04-16 15:20:36 -0700519/**
520 * kset_init - initialize a kset for use
521 * @k: kset
522 */
523
524void kset_init(struct kset * k)
525{
526 kobject_init(&k->kobj);
527 INIT_LIST_HEAD(&k->list);
528 spin_lock_init(&k->list_lock);
529}
530
531
532/**
533 * kset_add - add a kset object to the hierarchy.
534 * @k: kset.
535 *
536 * Simply, this adds the kset's embedded kobject to the
537 * hierarchy.
538 * We also try to make sure that the kset's embedded kobject
539 * has a parent before it is added. We only care if the embedded
540 * kobject is not part of a kset itself, since kobject_add()
541 * assigns a parent in that case.
542 * If that is the case, and the kset has a controlling subsystem,
543 * then we set the kset's parent to be said subsystem.
544 */
545
546int kset_add(struct kset * k)
547{
548 if (!k->kobj.parent && !k->kobj.kset && k->subsys)
549 k->kobj.parent = &k->subsys->kset.kobj;
550
551 return kobject_add(&k->kobj);
552}
553
554
555/**
556 * kset_register - initialize and add a kset.
557 * @k: kset.
558 */
559
560int kset_register(struct kset * k)
561{
Greg Kroah-Hartman31b90252007-01-18 12:23:51 -0800562 if (!k)
563 return -EINVAL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700564 kset_init(k);
565 return kset_add(k);
566}
567
568
569/**
570 * kset_unregister - remove a kset.
571 * @k: kset.
572 */
573
574void kset_unregister(struct kset * k)
575{
Greg Kroah-Hartman31b90252007-01-18 12:23:51 -0800576 if (!k)
577 return;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700578 kobject_unregister(&k->kobj);
579}
580
581
582/**
583 * kset_find_obj - search for object in kset.
584 * @kset: kset we're looking in.
585 * @name: object's name.
586 *
587 * Lock kset via @kset->subsys, and iterate over @kset->list,
588 * looking for a matching kobject. If matching object is found
589 * take a reference and return the object.
590 */
591
592struct kobject * kset_find_obj(struct kset * kset, const char * name)
593{
594 struct list_head * entry;
595 struct kobject * ret = NULL;
596
597 spin_lock(&kset->list_lock);
598 list_for_each(entry,&kset->list) {
599 struct kobject * k = to_kobj(entry);
600 if (kobject_name(k) && !strcmp(kobject_name(k),name)) {
601 ret = kobject_get(k);
602 break;
603 }
604 }
605 spin_unlock(&kset->list_lock);
606 return ret;
607}
608
609
610void subsystem_init(struct subsystem * s)
611{
612 init_rwsem(&s->rwsem);
613 kset_init(&s->kset);
614}
615
616/**
617 * subsystem_register - register a subsystem.
618 * @s: the subsystem we're registering.
619 *
620 * Once we register the subsystem, we want to make sure that
621 * the kset points back to this subsystem for correct usage of
622 * the rwsem.
623 */
624
625int subsystem_register(struct subsystem * s)
626{
627 int error;
628
Greg Kroah-Hartman31b90252007-01-18 12:23:51 -0800629 if (!s)
630 return -EINVAL;
631
Linus Torvalds1da177e2005-04-16 15:20:36 -0700632 subsystem_init(s);
633 pr_debug("subsystem %s: registering\n",s->kset.kobj.name);
634
635 if (!(error = kset_add(&s->kset))) {
636 if (!s->kset.subsys)
637 s->kset.subsys = s;
638 }
639 return error;
640}
641
642void subsystem_unregister(struct subsystem * s)
643{
Greg Kroah-Hartman31b90252007-01-18 12:23:51 -0800644 if (!s)
645 return;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700646 pr_debug("subsystem %s: unregistering\n",s->kset.kobj.name);
647 kset_unregister(&s->kset);
648}
649
650
651/**
652 * subsystem_create_file - export sysfs attribute file.
653 * @s: subsystem.
654 * @a: subsystem attribute descriptor.
655 */
656
657int subsys_create_file(struct subsystem * s, struct subsys_attribute * a)
658{
659 int error = 0;
Greg Kroah-Hartman31b90252007-01-18 12:23:51 -0800660
661 if (!s || !a)
662 return -EINVAL;
663
Linus Torvalds1da177e2005-04-16 15:20:36 -0700664 if (subsys_get(s)) {
665 error = sysfs_create_file(&s->kset.kobj,&a->attr);
666 subsys_put(s);
667 }
668 return error;
669}
670
671
672/**
673 * subsystem_remove_file - remove sysfs attribute file.
674 * @s: subsystem.
675 * @a: attribute desciptor.
676 */
Adrian Bunk5b3ef142006-04-22 12:14:44 +0200677#if 0
Linus Torvalds1da177e2005-04-16 15:20:36 -0700678void subsys_remove_file(struct subsystem * s, struct subsys_attribute * a)
679{
680 if (subsys_get(s)) {
681 sysfs_remove_file(&s->kset.kobj,&a->attr);
682 subsys_put(s);
683 }
684}
Adrian Bunk5b3ef142006-04-22 12:14:44 +0200685#endif /* 0 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700686
687EXPORT_SYMBOL(kobject_init);
688EXPORT_SYMBOL(kobject_register);
689EXPORT_SYMBOL(kobject_unregister);
690EXPORT_SYMBOL(kobject_get);
691EXPORT_SYMBOL(kobject_put);
692EXPORT_SYMBOL(kobject_add);
693EXPORT_SYMBOL(kobject_del);
694
695EXPORT_SYMBOL(kset_register);
696EXPORT_SYMBOL(kset_unregister);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700697
Linus Torvalds1da177e2005-04-16 15:20:36 -0700698EXPORT_SYMBOL(subsystem_register);
699EXPORT_SYMBOL(subsystem_unregister);
700EXPORT_SYMBOL(subsys_create_file);