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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
1da177e4 LT |
2 | /* |
3 | * sysfs.h - definitions for the device driver filesystem | |
4 | * | |
5 | * Copyright (c) 2001,2002 Patrick Mochel | |
6 | * Copyright (c) 2004 Silicon Graphics, Inc. | |
6d66f5cd TH |
7 | * Copyright (c) 2007 SUSE Linux Products GmbH |
8 | * Copyright (c) 2007 Tejun Heo <teheo@suse.de> | |
1da177e4 LT |
9 | * |
10 | * Please see Documentation/filesystems/sysfs.txt for more information. | |
11 | */ | |
12 | ||
13 | #ifndef _SYSFS_H_ | |
14 | #define _SYSFS_H_ | |
15 | ||
b8441ed2 | 16 | #include <linux/kernfs.h> |
4a7fb636 | 17 | #include <linux/compiler.h> |
5851fadc | 18 | #include <linux/errno.h> |
bf0acc33 | 19 | #include <linux/list.h> |
6992f533 | 20 | #include <linux/lockdep.h> |
8488a38f | 21 | #include <linux/kobject_ns.h> |
3493f69f | 22 | #include <linux/stat.h> |
60063497 | 23 | #include <linux/atomic.h> |
1da177e4 LT |
24 | |
25 | struct kobject; | |
26 | struct module; | |
6ab9cea1 | 27 | struct bin_attribute; |
3ff195b0 | 28 | enum kobj_ns_type; |
1da177e4 LT |
29 | |
30 | struct attribute { | |
59f69015 | 31 | const char *name; |
9104e427 | 32 | umode_t mode; |
6992f533 | 33 | #ifdef CONFIG_DEBUG_LOCK_ALLOC |
356c05d5 | 34 | bool ignore_lockdep:1; |
6992f533 EB |
35 | struct lock_class_key *key; |
36 | struct lock_class_key skey; | |
37 | #endif | |
1da177e4 LT |
38 | }; |
39 | ||
35960258 EB |
40 | /** |
41 | * sysfs_attr_init - initialize a dynamically allocated sysfs attribute | |
42 | * @attr: struct attribute to initialize | |
43 | * | |
44 | * Initialize a dynamically allocated struct attribute so we can | |
45 | * make lockdep happy. This is a new requirement for attributes | |
46 | * and initially this is only needed when lockdep is enabled. | |
47 | * Lockdep gives a nice error when your attribute is added to | |
48 | * sysfs if you don't have this. | |
49 | */ | |
6992f533 EB |
50 | #ifdef CONFIG_DEBUG_LOCK_ALLOC |
51 | #define sysfs_attr_init(attr) \ | |
52 | do { \ | |
53 | static struct lock_class_key __key; \ | |
54 | \ | |
55 | (attr)->key = &__key; \ | |
5da5c9c8 | 56 | } while (0) |
6992f533 | 57 | #else |
5da5c9c8 | 58 | #define sysfs_attr_init(attr) do {} while (0) |
6992f533 EB |
59 | #endif |
60 | ||
ba61af6f GR |
61 | /** |
62 | * struct attribute_group - data structure used to declare an attribute group. | |
63 | * @name: Optional: Attribute group name | |
64 | * If specified, the attribute group will be created in | |
65 | * a new subdirectory with this name. | |
66 | * @is_visible: Optional: Function to return permissions associated with an | |
67 | * attribute of the group. Will be called repeatedly for each | |
7f5028cf EL |
68 | * non-binary attribute in the group. Only read/write |
69 | * permissions as well as SYSFS_PREALLOC are accepted. Must | |
70 | * return 0 if an attribute is not visible. The returned value | |
71 | * will replace static permissions defined in struct attribute. | |
72 | * @is_bin_visible: | |
73 | * Optional: Function to return permissions associated with a | |
74 | * binary attribute of the group. Will be called repeatedly | |
75 | * for each binary attribute in the group. Only read/write | |
76 | * permissions as well as SYSFS_PREALLOC are accepted. Must | |
77 | * return 0 if a binary attribute is not visible. The returned | |
78 | * value will replace static permissions defined in | |
79 | * struct bin_attribute. | |
ba61af6f GR |
80 | * @attrs: Pointer to NULL terminated list of attributes. |
81 | * @bin_attrs: Pointer to NULL terminated list of binary attributes. | |
82 | * Either attrs or bin_attrs or both must be provided. | |
83 | */ | |
1da177e4 | 84 | struct attribute_group { |
59f69015 | 85 | const char *name; |
587a1f16 | 86 | umode_t (*is_visible)(struct kobject *, |
d4acd722 | 87 | struct attribute *, int); |
7f5028cf EL |
88 | umode_t (*is_bin_visible)(struct kobject *, |
89 | struct bin_attribute *, int); | |
59f69015 | 90 | struct attribute **attrs; |
6ab9cea1 | 91 | struct bin_attribute **bin_attrs; |
1da177e4 LT |
92 | }; |
93 | ||
3ec78790 RD |
94 | /* |
95 | * Use these macros to make defining attributes easier. | |
96 | * See include/linux/device.h for examples.. | |
1da177e4 LT |
97 | */ |
98 | ||
2b75869b N |
99 | #define SYSFS_PREALLOC 010000 |
100 | ||
5da5c9c8 | 101 | #define __ATTR(_name, _mode, _show, _store) { \ |
58f86cc8 RR |
102 | .attr = {.name = __stringify(_name), \ |
103 | .mode = VERIFY_OCTAL_PERMISSIONS(_mode) }, \ | |
aa01aa3c OS |
104 | .show = _show, \ |
105 | .store = _store, \ | |
1da177e4 LT |
106 | } |
107 | ||
2b75869b N |
108 | #define __ATTR_PREALLOC(_name, _mode, _show, _store) { \ |
109 | .attr = {.name = __stringify(_name), \ | |
110 | .mode = SYSFS_PREALLOC | VERIFY_OCTAL_PERMISSIONS(_mode) },\ | |
111 | .show = _show, \ | |
112 | .store = _store, \ | |
113 | } | |
114 | ||
aa01aa3c | 115 | #define __ATTR_RO(_name) { \ |
353c6dda | 116 | .attr = { .name = __stringify(_name), .mode = 0444 }, \ |
aa01aa3c | 117 | .show = _name##_show, \ |
1da177e4 LT |
118 | } |
119 | ||
af97a77b GKH |
120 | #define __ATTR_RO_MODE(_name, _mode) { \ |
121 | .attr = { .name = __stringify(_name), \ | |
122 | .mode = VERIFY_OCTAL_PERMISSIONS(_mode) }, \ | |
123 | .show = _name##_show, \ | |
124 | } | |
125 | ||
a65fcce7 | 126 | #define __ATTR_WO(_name) { \ |
353c6dda | 127 | .attr = { .name = __stringify(_name), .mode = 0200 }, \ |
a65fcce7 GKH |
128 | .store = _name##_store, \ |
129 | } | |
130 | ||
353c6dda | 131 | #define __ATTR_RW(_name) __ATTR(_name, 0644, _name##_show, _name##_store) |
b9b32597 | 132 | |
1da177e4 | 133 | #define __ATTR_NULL { .attr = { .name = NULL } } |
356c05d5 AS |
134 | |
135 | #ifdef CONFIG_DEBUG_LOCK_ALLOC | |
136 | #define __ATTR_IGNORE_LOCKDEP(_name, _mode, _show, _store) { \ | |
137 | .attr = {.name = __stringify(_name), .mode = _mode, \ | |
138 | .ignore_lockdep = true }, \ | |
139 | .show = _show, \ | |
140 | .store = _store, \ | |
141 | } | |
142 | #else | |
143 | #define __ATTR_IGNORE_LOCKDEP __ATTR | |
144 | #endif | |
1da177e4 | 145 | |
3493f69f OS |
146 | #define __ATTRIBUTE_GROUPS(_name) \ |
147 | static const struct attribute_group *_name##_groups[] = { \ | |
148 | &_name##_group, \ | |
f2f37f58 GKH |
149 | NULL, \ |
150 | } | |
151 | ||
3493f69f OS |
152 | #define ATTRIBUTE_GROUPS(_name) \ |
153 | static const struct attribute_group _name##_group = { \ | |
154 | .attrs = _name##_attrs, \ | |
155 | }; \ | |
156 | __ATTRIBUTE_GROUPS(_name) | |
157 | ||
2c3c8bea | 158 | struct file; |
1da177e4 LT |
159 | struct vm_area_struct; |
160 | ||
161 | struct bin_attribute { | |
162 | struct attribute attr; | |
163 | size_t size; | |
164 | void *private; | |
2c3c8bea | 165 | ssize_t (*read)(struct file *, struct kobject *, struct bin_attribute *, |
91a69029 | 166 | char *, loff_t, size_t); |
5da5c9c8 | 167 | ssize_t (*write)(struct file *, struct kobject *, struct bin_attribute *, |
91a69029 | 168 | char *, loff_t, size_t); |
2c3c8bea | 169 | int (*mmap)(struct file *, struct kobject *, struct bin_attribute *attr, |
1da177e4 LT |
170 | struct vm_area_struct *vma); |
171 | }; | |
172 | ||
35960258 EB |
173 | /** |
174 | * sysfs_bin_attr_init - initialize a dynamically allocated bin_attribute | |
175 | * @attr: struct bin_attribute to initialize | |
176 | * | |
177 | * Initialize a dynamically allocated struct bin_attribute so we | |
178 | * can make lockdep happy. This is a new requirement for | |
179 | * attributes and initially this is only needed when lockdep is | |
180 | * enabled. Lockdep gives a nice error when your attribute is | |
181 | * added to sysfs if you don't have this. | |
182 | */ | |
62e877b8 | 183 | #define sysfs_bin_attr_init(bin_attr) sysfs_attr_init(&(bin_attr)->attr) |
6992f533 | 184 | |
3493f69f OS |
185 | /* macros to create static binary attributes easier */ |
186 | #define __BIN_ATTR(_name, _mode, _read, _write, _size) { \ | |
187 | .attr = { .name = __stringify(_name), .mode = _mode }, \ | |
188 | .read = _read, \ | |
189 | .write = _write, \ | |
190 | .size = _size, \ | |
191 | } | |
192 | ||
193 | #define __BIN_ATTR_RO(_name, _size) { \ | |
353c6dda | 194 | .attr = { .name = __stringify(_name), .mode = 0444 }, \ |
3493f69f OS |
195 | .read = _name##_read, \ |
196 | .size = _size, \ | |
e4b63603 GKH |
197 | } |
198 | ||
353c6dda JP |
199 | #define __BIN_ATTR_RW(_name, _size) \ |
200 | __BIN_ATTR(_name, 0644, _name##_read, _name##_write, _size) | |
3493f69f OS |
201 | |
202 | #define __BIN_ATTR_NULL __ATTR_NULL | |
203 | ||
204 | #define BIN_ATTR(_name, _mode, _read, _write, _size) \ | |
205 | struct bin_attribute bin_attr_##_name = __BIN_ATTR(_name, _mode, _read, \ | |
206 | _write, _size) | |
207 | ||
208 | #define BIN_ATTR_RO(_name, _size) \ | |
209 | struct bin_attribute bin_attr_##_name = __BIN_ATTR_RO(_name, _size) | |
210 | ||
211 | #define BIN_ATTR_RW(_name, _size) \ | |
212 | struct bin_attribute bin_attr_##_name = __BIN_ATTR_RW(_name, _size) | |
213 | ||
1da177e4 | 214 | struct sysfs_ops { |
5da5c9c8 GKH |
215 | ssize_t (*show)(struct kobject *, struct attribute *, char *); |
216 | ssize_t (*store)(struct kobject *, struct attribute *, const char *, size_t); | |
1da177e4 LT |
217 | }; |
218 | ||
1da177e4 LT |
219 | #ifdef CONFIG_SYSFS |
220 | ||
e34ff490 | 221 | int __must_check sysfs_create_dir_ns(struct kobject *kobj, const void *ns); |
59f69015 | 222 | void sysfs_remove_dir(struct kobject *kobj); |
e34ff490 TH |
223 | int __must_check sysfs_rename_dir_ns(struct kobject *kobj, const char *new_name, |
224 | const void *new_ns); | |
225 | int __must_check sysfs_move_dir_ns(struct kobject *kobj, | |
226 | struct kobject *new_parent_kobj, | |
227 | const void *new_ns); | |
87d2846f EB |
228 | int __must_check sysfs_create_mount_point(struct kobject *parent_kobj, |
229 | const char *name); | |
230 | void sysfs_remove_mount_point(struct kobject *parent_kobj, | |
231 | const char *name); | |
31e5abe9 | 232 | |
58292cbe TH |
233 | int __must_check sysfs_create_file_ns(struct kobject *kobj, |
234 | const struct attribute *attr, | |
235 | const void *ns); | |
1c205ae1 | 236 | int __must_check sysfs_create_files(struct kobject *kobj, |
9ee4685c | 237 | const struct attribute * const *attr); |
49c19400 | 238 | int __must_check sysfs_chmod_file(struct kobject *kobj, |
48176a97 | 239 | const struct attribute *attr, umode_t mode); |
2afc9166 BVA |
240 | struct kernfs_node *sysfs_break_active_protection(struct kobject *kobj, |
241 | const struct attribute *attr); | |
242 | void sysfs_unbreak_active_protection(struct kernfs_node *kn); | |
58292cbe TH |
243 | void sysfs_remove_file_ns(struct kobject *kobj, const struct attribute *attr, |
244 | const void *ns); | |
6b0afc2a | 245 | bool sysfs_remove_file_self(struct kobject *kobj, const struct attribute *attr); |
9ee4685c | 246 | void sysfs_remove_files(struct kobject *kobj, const struct attribute * const *attr); |
1da177e4 | 247 | |
4a7fb636 | 248 | int __must_check sysfs_create_bin_file(struct kobject *kobj, |
66ecb92b PC |
249 | const struct bin_attribute *attr); |
250 | void sysfs_remove_bin_file(struct kobject *kobj, | |
251 | const struct bin_attribute *attr); | |
1da177e4 | 252 | |
59f69015 TH |
253 | int __must_check sysfs_create_link(struct kobject *kobj, struct kobject *target, |
254 | const char *name); | |
36ce6dad CH |
255 | int __must_check sysfs_create_link_nowarn(struct kobject *kobj, |
256 | struct kobject *target, | |
257 | const char *name); | |
59f69015 TH |
258 | void sysfs_remove_link(struct kobject *kobj, const char *name); |
259 | ||
4b30ee58 TH |
260 | int sysfs_rename_link_ns(struct kobject *kobj, struct kobject *target, |
261 | const char *old_name, const char *new_name, | |
262 | const void *new_ns); | |
7cb32942 | 263 | |
746edb7a EB |
264 | void sysfs_delete_link(struct kobject *dir, struct kobject *targ, |
265 | const char *name); | |
266 | ||
59f69015 TH |
267 | int __must_check sysfs_create_group(struct kobject *kobj, |
268 | const struct attribute_group *grp); | |
3e9b2bae GKH |
269 | int __must_check sysfs_create_groups(struct kobject *kobj, |
270 | const struct attribute_group **groups); | |
aac1f7f9 JO |
271 | int __must_check sysfs_update_groups(struct kobject *kobj, |
272 | const struct attribute_group **groups); | |
0f423895 JB |
273 | int sysfs_update_group(struct kobject *kobj, |
274 | const struct attribute_group *grp); | |
59f69015 TH |
275 | void sysfs_remove_group(struct kobject *kobj, |
276 | const struct attribute_group *grp); | |
3e9b2bae GKH |
277 | void sysfs_remove_groups(struct kobject *kobj, |
278 | const struct attribute_group **groups); | |
dfa87c82 | 279 | int sysfs_add_file_to_group(struct kobject *kobj, |
59f69015 | 280 | const struct attribute *attr, const char *group); |
dfa87c82 | 281 | void sysfs_remove_file_from_group(struct kobject *kobj, |
59f69015 | 282 | const struct attribute *attr, const char *group); |
69d44ffb AS |
283 | int sysfs_merge_group(struct kobject *kobj, |
284 | const struct attribute_group *grp); | |
285 | void sysfs_unmerge_group(struct kobject *kobj, | |
286 | const struct attribute_group *grp); | |
0bb8f3d6 RW |
287 | int sysfs_add_link_to_group(struct kobject *kobj, const char *group_name, |
288 | struct kobject *target, const char *link_name); | |
289 | void sysfs_remove_link_from_group(struct kobject *kobj, const char *group_name, | |
290 | const char *link_name); | |
37c1c04c JS |
291 | int __compat_only_sysfs_link_entry_to_kobj(struct kobject *kobj, |
292 | struct kobject *target_kobj, | |
293 | const char *target_name); | |
dfa87c82 | 294 | |
8c0e3998 | 295 | void sysfs_notify(struct kobject *kobj, const char *dir, const char *attr); |
3ff195b0 | 296 | |
f1282c84 | 297 | int __must_check sysfs_init(void); |
f20a9ead | 298 | |
fa4cd451 TH |
299 | static inline void sysfs_enable_ns(struct kernfs_node *kn) |
300 | { | |
301 | return kernfs_enable_ns(kn); | |
302 | } | |
303 | ||
1da177e4 LT |
304 | #else /* CONFIG_SYSFS */ |
305 | ||
e34ff490 | 306 | static inline int sysfs_create_dir_ns(struct kobject *kobj, const void *ns) |
1da177e4 LT |
307 | { |
308 | return 0; | |
309 | } | |
310 | ||
59f69015 | 311 | static inline void sysfs_remove_dir(struct kobject *kobj) |
1da177e4 | 312 | { |
1da177e4 LT |
313 | } |
314 | ||
e34ff490 TH |
315 | static inline int sysfs_rename_dir_ns(struct kobject *kobj, |
316 | const char *new_name, const void *new_ns) | |
1da177e4 | 317 | { |
0b4a4fea | 318 | return 0; |
1da177e4 LT |
319 | } |
320 | ||
e34ff490 TH |
321 | static inline int sysfs_move_dir_ns(struct kobject *kobj, |
322 | struct kobject *new_parent_kobj, | |
323 | const void *new_ns) | |
8a82472f CH |
324 | { |
325 | return 0; | |
326 | } | |
327 | ||
87d2846f EB |
328 | static inline int sysfs_create_mount_point(struct kobject *parent_kobj, |
329 | const char *name) | |
330 | { | |
331 | return 0; | |
332 | } | |
333 | ||
334 | static inline void sysfs_remove_mount_point(struct kobject *parent_kobj, | |
335 | const char *name) | |
336 | { | |
337 | } | |
338 | ||
58292cbe TH |
339 | static inline int sysfs_create_file_ns(struct kobject *kobj, |
340 | const struct attribute *attr, | |
341 | const void *ns) | |
1da177e4 LT |
342 | { |
343 | return 0; | |
344 | } | |
345 | ||
1c205ae1 | 346 | static inline int sysfs_create_files(struct kobject *kobj, |
9ee4685c | 347 | const struct attribute * const *attr) |
1c205ae1 AK |
348 | { |
349 | return 0; | |
350 | } | |
351 | ||
59f69015 | 352 | static inline int sysfs_chmod_file(struct kobject *kobj, |
48176a97 | 353 | const struct attribute *attr, umode_t mode) |
31e5abe9 KS |
354 | { |
355 | return 0; | |
356 | } | |
1da177e4 | 357 | |
2afc9166 BVA |
358 | static inline struct kernfs_node * |
359 | sysfs_break_active_protection(struct kobject *kobj, | |
360 | const struct attribute *attr) | |
361 | { | |
362 | return NULL; | |
363 | } | |
364 | ||
365 | static inline void sysfs_unbreak_active_protection(struct kernfs_node *kn) | |
366 | { | |
367 | } | |
368 | ||
58292cbe TH |
369 | static inline void sysfs_remove_file_ns(struct kobject *kobj, |
370 | const struct attribute *attr, | |
371 | const void *ns) | |
1da177e4 | 372 | { |
1da177e4 LT |
373 | } |
374 | ||
6b0afc2a TH |
375 | static inline bool sysfs_remove_file_self(struct kobject *kobj, |
376 | const struct attribute *attr) | |
377 | { | |
378 | return false; | |
379 | } | |
380 | ||
1c205ae1 | 381 | static inline void sysfs_remove_files(struct kobject *kobj, |
9ee4685c | 382 | const struct attribute * const *attr) |
1c205ae1 AK |
383 | { |
384 | } | |
385 | ||
59f69015 | 386 | static inline int sysfs_create_bin_file(struct kobject *kobj, |
66ecb92b | 387 | const struct bin_attribute *attr) |
1da177e4 LT |
388 | { |
389 | return 0; | |
390 | } | |
391 | ||
3612e06b | 392 | static inline void sysfs_remove_bin_file(struct kobject *kobj, |
66ecb92b | 393 | const struct bin_attribute *attr) |
1da177e4 | 394 | { |
1da177e4 LT |
395 | } |
396 | ||
59f69015 TH |
397 | static inline int sysfs_create_link(struct kobject *kobj, |
398 | struct kobject *target, const char *name) | |
1da177e4 LT |
399 | { |
400 | return 0; | |
401 | } | |
402 | ||
36ce6dad CH |
403 | static inline int sysfs_create_link_nowarn(struct kobject *kobj, |
404 | struct kobject *target, | |
405 | const char *name) | |
406 | { | |
407 | return 0; | |
408 | } | |
409 | ||
59f69015 | 410 | static inline void sysfs_remove_link(struct kobject *kobj, const char *name) |
1da177e4 | 411 | { |
1da177e4 LT |
412 | } |
413 | ||
4b30ee58 TH |
414 | static inline int sysfs_rename_link_ns(struct kobject *k, struct kobject *t, |
415 | const char *old_name, | |
416 | const char *new_name, const void *ns) | |
7cb32942 EB |
417 | { |
418 | return 0; | |
419 | } | |
420 | ||
746edb7a EB |
421 | static inline void sysfs_delete_link(struct kobject *k, struct kobject *t, |
422 | const char *name) | |
423 | { | |
424 | } | |
425 | ||
59f69015 TH |
426 | static inline int sysfs_create_group(struct kobject *kobj, |
427 | const struct attribute_group *grp) | |
1da177e4 LT |
428 | { |
429 | return 0; | |
430 | } | |
431 | ||
f7998780 GKH |
432 | static inline int sysfs_create_groups(struct kobject *kobj, |
433 | const struct attribute_group **groups) | |
434 | { | |
574979c6 | 435 | return 0; |
f7998780 GKH |
436 | } |
437 | ||
aac1f7f9 JO |
438 | static inline int sysfs_update_groups(struct kobject *kobj, |
439 | const struct attribute_group **groups) | |
440 | { | |
441 | return 0; | |
442 | } | |
443 | ||
1cbfb7a5 RD |
444 | static inline int sysfs_update_group(struct kobject *kobj, |
445 | const struct attribute_group *grp) | |
446 | { | |
447 | return 0; | |
448 | } | |
449 | ||
59f69015 TH |
450 | static inline void sysfs_remove_group(struct kobject *kobj, |
451 | const struct attribute_group *grp) | |
1da177e4 | 452 | { |
1da177e4 LT |
453 | } |
454 | ||
f7998780 GKH |
455 | static inline void sysfs_remove_groups(struct kobject *kobj, |
456 | const struct attribute_group **groups) | |
457 | { | |
458 | } | |
459 | ||
dfa87c82 AS |
460 | static inline int sysfs_add_file_to_group(struct kobject *kobj, |
461 | const struct attribute *attr, const char *group) | |
462 | { | |
463 | return 0; | |
464 | } | |
465 | ||
466 | static inline void sysfs_remove_file_from_group(struct kobject *kobj, | |
d701d8a3 | 467 | const struct attribute *attr, const char *group) |
dfa87c82 | 468 | { |
dfa87c82 AS |
469 | } |
470 | ||
69d44ffb AS |
471 | static inline int sysfs_merge_group(struct kobject *kobj, |
472 | const struct attribute_group *grp) | |
473 | { | |
474 | return 0; | |
475 | } | |
476 | ||
477 | static inline void sysfs_unmerge_group(struct kobject *kobj, | |
478 | const struct attribute_group *grp) | |
479 | { | |
480 | } | |
481 | ||
0bb8f3d6 RW |
482 | static inline int sysfs_add_link_to_group(struct kobject *kobj, |
483 | const char *group_name, struct kobject *target, | |
484 | const char *link_name) | |
485 | { | |
486 | return 0; | |
487 | } | |
488 | ||
489 | static inline void sysfs_remove_link_from_group(struct kobject *kobj, | |
490 | const char *group_name, const char *link_name) | |
491 | { | |
492 | } | |
493 | ||
37c1c04c JS |
494 | static inline int __compat_only_sysfs_link_entry_to_kobj( |
495 | struct kobject *kobj, | |
496 | struct kobject *target_kobj, | |
497 | const char *target_name) | |
498 | { | |
499 | return 0; | |
500 | } | |
501 | ||
8c0e3998 TP |
502 | static inline void sysfs_notify(struct kobject *kobj, const char *dir, |
503 | const char *attr) | |
4508a7a7 N |
504 | { |
505 | } | |
506 | ||
f20a9ead AM |
507 | static inline int __must_check sysfs_init(void) |
508 | { | |
509 | return 0; | |
510 | } | |
511 | ||
fa4cd451 TH |
512 | static inline void sysfs_enable_ns(struct kernfs_node *kn) |
513 | { | |
514 | } | |
515 | ||
1da177e4 LT |
516 | #endif /* CONFIG_SYSFS */ |
517 | ||
58292cbe TH |
518 | static inline int __must_check sysfs_create_file(struct kobject *kobj, |
519 | const struct attribute *attr) | |
520 | { | |
521 | return sysfs_create_file_ns(kobj, attr, NULL); | |
522 | } | |
523 | ||
524 | static inline void sysfs_remove_file(struct kobject *kobj, | |
525 | const struct attribute *attr) | |
526 | { | |
78e1da62 | 527 | sysfs_remove_file_ns(kobj, attr, NULL); |
58292cbe TH |
528 | } |
529 | ||
4b30ee58 TH |
530 | static inline int sysfs_rename_link(struct kobject *kobj, struct kobject *target, |
531 | const char *old_name, const char *new_name) | |
532 | { | |
533 | return sysfs_rename_link_ns(kobj, target, old_name, new_name, NULL); | |
534 | } | |
535 | ||
324a56e1 | 536 | static inline void sysfs_notify_dirent(struct kernfs_node *kn) |
ccf73cf3 | 537 | { |
324a56e1 | 538 | kernfs_notify(kn); |
ccf73cf3 TH |
539 | } |
540 | ||
324a56e1 | 541 | static inline struct kernfs_node *sysfs_get_dirent(struct kernfs_node *parent, |
89cf2a20 | 542 | const char *name) |
388975cc | 543 | { |
324a56e1 | 544 | return kernfs_find_and_get(parent, name); |
388975cc TH |
545 | } |
546 | ||
324a56e1 | 547 | static inline struct kernfs_node *sysfs_get(struct kernfs_node *kn) |
024f6471 | 548 | { |
324a56e1 TH |
549 | kernfs_get(kn); |
550 | return kn; | |
ccf73cf3 TH |
551 | } |
552 | ||
324a56e1 | 553 | static inline void sysfs_put(struct kernfs_node *kn) |
ccf73cf3 | 554 | { |
324a56e1 | 555 | kernfs_put(kn); |
024f6471 TH |
556 | } |
557 | ||
1da177e4 | 558 | #endif /* _SYSFS_H_ */ |