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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 | ||
1da177e4 LT |
94 | /** |
95 | * Use these macros to make defining attributes easier. See include/linux/device.h | |
96 | * for examples.. | |
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 OS |
115 | #define __ATTR_RO(_name) { \ |
116 | .attr = { .name = __stringify(_name), .mode = S_IRUGO }, \ | |
117 | .show = _name##_show, \ | |
1da177e4 LT |
118 | } |
119 | ||
a65fcce7 GKH |
120 | #define __ATTR_WO(_name) { \ |
121 | .attr = { .name = __stringify(_name), .mode = S_IWUSR }, \ | |
122 | .store = _name##_store, \ | |
123 | } | |
124 | ||
aa01aa3c OS |
125 | #define __ATTR_RW(_name) __ATTR(_name, (S_IWUSR | S_IRUGO), \ |
126 | _name##_show, _name##_store) | |
b9b32597 | 127 | |
1da177e4 | 128 | #define __ATTR_NULL { .attr = { .name = NULL } } |
356c05d5 AS |
129 | |
130 | #ifdef CONFIG_DEBUG_LOCK_ALLOC | |
131 | #define __ATTR_IGNORE_LOCKDEP(_name, _mode, _show, _store) { \ | |
132 | .attr = {.name = __stringify(_name), .mode = _mode, \ | |
133 | .ignore_lockdep = true }, \ | |
134 | .show = _show, \ | |
135 | .store = _store, \ | |
136 | } | |
137 | #else | |
138 | #define __ATTR_IGNORE_LOCKDEP __ATTR | |
139 | #endif | |
1da177e4 | 140 | |
3493f69f OS |
141 | #define __ATTRIBUTE_GROUPS(_name) \ |
142 | static const struct attribute_group *_name##_groups[] = { \ | |
143 | &_name##_group, \ | |
f2f37f58 GKH |
144 | NULL, \ |
145 | } | |
146 | ||
3493f69f OS |
147 | #define ATTRIBUTE_GROUPS(_name) \ |
148 | static const struct attribute_group _name##_group = { \ | |
149 | .attrs = _name##_attrs, \ | |
150 | }; \ | |
151 | __ATTRIBUTE_GROUPS(_name) | |
152 | ||
2c3c8bea | 153 | struct file; |
1da177e4 LT |
154 | struct vm_area_struct; |
155 | ||
156 | struct bin_attribute { | |
157 | struct attribute attr; | |
158 | size_t size; | |
159 | void *private; | |
2c3c8bea | 160 | ssize_t (*read)(struct file *, struct kobject *, struct bin_attribute *, |
91a69029 | 161 | char *, loff_t, size_t); |
5da5c9c8 | 162 | ssize_t (*write)(struct file *, struct kobject *, struct bin_attribute *, |
91a69029 | 163 | char *, loff_t, size_t); |
2c3c8bea | 164 | int (*mmap)(struct file *, struct kobject *, struct bin_attribute *attr, |
1da177e4 LT |
165 | struct vm_area_struct *vma); |
166 | }; | |
167 | ||
35960258 EB |
168 | /** |
169 | * sysfs_bin_attr_init - initialize a dynamically allocated bin_attribute | |
170 | * @attr: struct bin_attribute to initialize | |
171 | * | |
172 | * Initialize a dynamically allocated struct bin_attribute so we | |
173 | * can make lockdep happy. This is a new requirement for | |
174 | * attributes and initially this is only needed when lockdep is | |
175 | * enabled. Lockdep gives a nice error when your attribute is | |
176 | * added to sysfs if you don't have this. | |
177 | */ | |
62e877b8 | 178 | #define sysfs_bin_attr_init(bin_attr) sysfs_attr_init(&(bin_attr)->attr) |
6992f533 | 179 | |
3493f69f OS |
180 | /* macros to create static binary attributes easier */ |
181 | #define __BIN_ATTR(_name, _mode, _read, _write, _size) { \ | |
182 | .attr = { .name = __stringify(_name), .mode = _mode }, \ | |
183 | .read = _read, \ | |
184 | .write = _write, \ | |
185 | .size = _size, \ | |
186 | } | |
187 | ||
188 | #define __BIN_ATTR_RO(_name, _size) { \ | |
189 | .attr = { .name = __stringify(_name), .mode = S_IRUGO }, \ | |
190 | .read = _name##_read, \ | |
191 | .size = _size, \ | |
e4b63603 GKH |
192 | } |
193 | ||
3493f69f OS |
194 | #define __BIN_ATTR_RW(_name, _size) __BIN_ATTR(_name, \ |
195 | (S_IWUSR | S_IRUGO), _name##_read, \ | |
68531526 | 196 | _name##_write, _size) |
3493f69f OS |
197 | |
198 | #define __BIN_ATTR_NULL __ATTR_NULL | |
199 | ||
200 | #define BIN_ATTR(_name, _mode, _read, _write, _size) \ | |
201 | struct bin_attribute bin_attr_##_name = __BIN_ATTR(_name, _mode, _read, \ | |
202 | _write, _size) | |
203 | ||
204 | #define BIN_ATTR_RO(_name, _size) \ | |
205 | struct bin_attribute bin_attr_##_name = __BIN_ATTR_RO(_name, _size) | |
206 | ||
207 | #define BIN_ATTR_RW(_name, _size) \ | |
208 | struct bin_attribute bin_attr_##_name = __BIN_ATTR_RW(_name, _size) | |
209 | ||
1da177e4 | 210 | struct sysfs_ops { |
5da5c9c8 GKH |
211 | ssize_t (*show)(struct kobject *, struct attribute *, char *); |
212 | ssize_t (*store)(struct kobject *, struct attribute *, const char *, size_t); | |
1da177e4 LT |
213 | }; |
214 | ||
1da177e4 LT |
215 | #ifdef CONFIG_SYSFS |
216 | ||
e34ff490 | 217 | int __must_check sysfs_create_dir_ns(struct kobject *kobj, const void *ns); |
59f69015 | 218 | void sysfs_remove_dir(struct kobject *kobj); |
e34ff490 TH |
219 | int __must_check sysfs_rename_dir_ns(struct kobject *kobj, const char *new_name, |
220 | const void *new_ns); | |
221 | int __must_check sysfs_move_dir_ns(struct kobject *kobj, | |
222 | struct kobject *new_parent_kobj, | |
223 | const void *new_ns); | |
87d2846f EB |
224 | int __must_check sysfs_create_mount_point(struct kobject *parent_kobj, |
225 | const char *name); | |
226 | void sysfs_remove_mount_point(struct kobject *parent_kobj, | |
227 | const char *name); | |
31e5abe9 | 228 | |
58292cbe TH |
229 | int __must_check sysfs_create_file_ns(struct kobject *kobj, |
230 | const struct attribute *attr, | |
231 | const void *ns); | |
1c205ae1 AK |
232 | int __must_check sysfs_create_files(struct kobject *kobj, |
233 | const struct attribute **attr); | |
49c19400 | 234 | int __must_check sysfs_chmod_file(struct kobject *kobj, |
48176a97 | 235 | const struct attribute *attr, umode_t mode); |
58292cbe TH |
236 | void sysfs_remove_file_ns(struct kobject *kobj, const struct attribute *attr, |
237 | const void *ns); | |
6b0afc2a | 238 | bool sysfs_remove_file_self(struct kobject *kobj, const struct attribute *attr); |
1c205ae1 | 239 | void sysfs_remove_files(struct kobject *kobj, const struct attribute **attr); |
1da177e4 | 240 | |
4a7fb636 | 241 | int __must_check sysfs_create_bin_file(struct kobject *kobj, |
66ecb92b PC |
242 | const struct bin_attribute *attr); |
243 | void sysfs_remove_bin_file(struct kobject *kobj, | |
244 | const struct bin_attribute *attr); | |
1da177e4 | 245 | |
59f69015 TH |
246 | int __must_check sysfs_create_link(struct kobject *kobj, struct kobject *target, |
247 | const char *name); | |
36ce6dad CH |
248 | int __must_check sysfs_create_link_nowarn(struct kobject *kobj, |
249 | struct kobject *target, | |
250 | const char *name); | |
59f69015 TH |
251 | void sysfs_remove_link(struct kobject *kobj, const char *name); |
252 | ||
4b30ee58 TH |
253 | int sysfs_rename_link_ns(struct kobject *kobj, struct kobject *target, |
254 | const char *old_name, const char *new_name, | |
255 | const void *new_ns); | |
7cb32942 | 256 | |
746edb7a EB |
257 | void sysfs_delete_link(struct kobject *dir, struct kobject *targ, |
258 | const char *name); | |
259 | ||
59f69015 TH |
260 | int __must_check sysfs_create_group(struct kobject *kobj, |
261 | const struct attribute_group *grp); | |
3e9b2bae GKH |
262 | int __must_check sysfs_create_groups(struct kobject *kobj, |
263 | const struct attribute_group **groups); | |
0f423895 JB |
264 | int sysfs_update_group(struct kobject *kobj, |
265 | const struct attribute_group *grp); | |
59f69015 TH |
266 | void sysfs_remove_group(struct kobject *kobj, |
267 | const struct attribute_group *grp); | |
3e9b2bae GKH |
268 | void sysfs_remove_groups(struct kobject *kobj, |
269 | const struct attribute_group **groups); | |
dfa87c82 | 270 | int sysfs_add_file_to_group(struct kobject *kobj, |
59f69015 | 271 | const struct attribute *attr, const char *group); |
dfa87c82 | 272 | void sysfs_remove_file_from_group(struct kobject *kobj, |
59f69015 | 273 | const struct attribute *attr, const char *group); |
69d44ffb AS |
274 | int sysfs_merge_group(struct kobject *kobj, |
275 | const struct attribute_group *grp); | |
276 | void sysfs_unmerge_group(struct kobject *kobj, | |
277 | const struct attribute_group *grp); | |
0bb8f3d6 RW |
278 | int sysfs_add_link_to_group(struct kobject *kobj, const char *group_name, |
279 | struct kobject *target, const char *link_name); | |
280 | void sysfs_remove_link_from_group(struct kobject *kobj, const char *group_name, | |
281 | const char *link_name); | |
37c1c04c JS |
282 | int __compat_only_sysfs_link_entry_to_kobj(struct kobject *kobj, |
283 | struct kobject *target_kobj, | |
284 | const char *target_name); | |
dfa87c82 | 285 | |
8c0e3998 | 286 | void sysfs_notify(struct kobject *kobj, const char *dir, const char *attr); |
3ff195b0 | 287 | |
f1282c84 | 288 | int __must_check sysfs_init(void); |
f20a9ead | 289 | |
fa4cd451 TH |
290 | static inline void sysfs_enable_ns(struct kernfs_node *kn) |
291 | { | |
292 | return kernfs_enable_ns(kn); | |
293 | } | |
294 | ||
1da177e4 LT |
295 | #else /* CONFIG_SYSFS */ |
296 | ||
e34ff490 | 297 | static inline int sysfs_create_dir_ns(struct kobject *kobj, const void *ns) |
1da177e4 LT |
298 | { |
299 | return 0; | |
300 | } | |
301 | ||
59f69015 | 302 | static inline void sysfs_remove_dir(struct kobject *kobj) |
1da177e4 | 303 | { |
1da177e4 LT |
304 | } |
305 | ||
e34ff490 TH |
306 | static inline int sysfs_rename_dir_ns(struct kobject *kobj, |
307 | const char *new_name, const void *new_ns) | |
1da177e4 | 308 | { |
0b4a4fea | 309 | return 0; |
1da177e4 LT |
310 | } |
311 | ||
e34ff490 TH |
312 | static inline int sysfs_move_dir_ns(struct kobject *kobj, |
313 | struct kobject *new_parent_kobj, | |
314 | const void *new_ns) | |
8a82472f CH |
315 | { |
316 | return 0; | |
317 | } | |
318 | ||
87d2846f EB |
319 | static inline int sysfs_create_mount_point(struct kobject *parent_kobj, |
320 | const char *name) | |
321 | { | |
322 | return 0; | |
323 | } | |
324 | ||
325 | static inline void sysfs_remove_mount_point(struct kobject *parent_kobj, | |
326 | const char *name) | |
327 | { | |
328 | } | |
329 | ||
58292cbe TH |
330 | static inline int sysfs_create_file_ns(struct kobject *kobj, |
331 | const struct attribute *attr, | |
332 | const void *ns) | |
1da177e4 LT |
333 | { |
334 | return 0; | |
335 | } | |
336 | ||
1c205ae1 AK |
337 | static inline int sysfs_create_files(struct kobject *kobj, |
338 | const struct attribute **attr) | |
339 | { | |
340 | return 0; | |
341 | } | |
342 | ||
59f69015 | 343 | static inline int sysfs_chmod_file(struct kobject *kobj, |
48176a97 | 344 | const struct attribute *attr, umode_t mode) |
31e5abe9 KS |
345 | { |
346 | return 0; | |
347 | } | |
1da177e4 | 348 | |
58292cbe TH |
349 | static inline void sysfs_remove_file_ns(struct kobject *kobj, |
350 | const struct attribute *attr, | |
351 | const void *ns) | |
1da177e4 | 352 | { |
1da177e4 LT |
353 | } |
354 | ||
6b0afc2a TH |
355 | static inline bool sysfs_remove_file_self(struct kobject *kobj, |
356 | const struct attribute *attr) | |
357 | { | |
358 | return false; | |
359 | } | |
360 | ||
1c205ae1 AK |
361 | static inline void sysfs_remove_files(struct kobject *kobj, |
362 | const struct attribute **attr) | |
363 | { | |
364 | } | |
365 | ||
59f69015 | 366 | static inline int sysfs_create_bin_file(struct kobject *kobj, |
66ecb92b | 367 | const struct bin_attribute *attr) |
1da177e4 LT |
368 | { |
369 | return 0; | |
370 | } | |
371 | ||
3612e06b | 372 | static inline void sysfs_remove_bin_file(struct kobject *kobj, |
66ecb92b | 373 | const struct bin_attribute *attr) |
1da177e4 | 374 | { |
1da177e4 LT |
375 | } |
376 | ||
59f69015 TH |
377 | static inline int sysfs_create_link(struct kobject *kobj, |
378 | struct kobject *target, const char *name) | |
1da177e4 LT |
379 | { |
380 | return 0; | |
381 | } | |
382 | ||
36ce6dad CH |
383 | static inline int sysfs_create_link_nowarn(struct kobject *kobj, |
384 | struct kobject *target, | |
385 | const char *name) | |
386 | { | |
387 | return 0; | |
388 | } | |
389 | ||
59f69015 | 390 | static inline void sysfs_remove_link(struct kobject *kobj, const char *name) |
1da177e4 | 391 | { |
1da177e4 LT |
392 | } |
393 | ||
4b30ee58 TH |
394 | static inline int sysfs_rename_link_ns(struct kobject *k, struct kobject *t, |
395 | const char *old_name, | |
396 | const char *new_name, const void *ns) | |
7cb32942 EB |
397 | { |
398 | return 0; | |
399 | } | |
400 | ||
746edb7a EB |
401 | static inline void sysfs_delete_link(struct kobject *k, struct kobject *t, |
402 | const char *name) | |
403 | { | |
404 | } | |
405 | ||
59f69015 TH |
406 | static inline int sysfs_create_group(struct kobject *kobj, |
407 | const struct attribute_group *grp) | |
1da177e4 LT |
408 | { |
409 | return 0; | |
410 | } | |
411 | ||
f7998780 GKH |
412 | static inline int sysfs_create_groups(struct kobject *kobj, |
413 | const struct attribute_group **groups) | |
414 | { | |
574979c6 | 415 | return 0; |
f7998780 GKH |
416 | } |
417 | ||
1cbfb7a5 RD |
418 | static inline int sysfs_update_group(struct kobject *kobj, |
419 | const struct attribute_group *grp) | |
420 | { | |
421 | return 0; | |
422 | } | |
423 | ||
59f69015 TH |
424 | static inline void sysfs_remove_group(struct kobject *kobj, |
425 | const struct attribute_group *grp) | |
1da177e4 | 426 | { |
1da177e4 LT |
427 | } |
428 | ||
f7998780 GKH |
429 | static inline void sysfs_remove_groups(struct kobject *kobj, |
430 | const struct attribute_group **groups) | |
431 | { | |
432 | } | |
433 | ||
dfa87c82 AS |
434 | static inline int sysfs_add_file_to_group(struct kobject *kobj, |
435 | const struct attribute *attr, const char *group) | |
436 | { | |
437 | return 0; | |
438 | } | |
439 | ||
440 | static inline void sysfs_remove_file_from_group(struct kobject *kobj, | |
d701d8a3 | 441 | const struct attribute *attr, const char *group) |
dfa87c82 | 442 | { |
dfa87c82 AS |
443 | } |
444 | ||
69d44ffb AS |
445 | static inline int sysfs_merge_group(struct kobject *kobj, |
446 | const struct attribute_group *grp) | |
447 | { | |
448 | return 0; | |
449 | } | |
450 | ||
451 | static inline void sysfs_unmerge_group(struct kobject *kobj, | |
452 | const struct attribute_group *grp) | |
453 | { | |
454 | } | |
455 | ||
0bb8f3d6 RW |
456 | static inline int sysfs_add_link_to_group(struct kobject *kobj, |
457 | const char *group_name, struct kobject *target, | |
458 | const char *link_name) | |
459 | { | |
460 | return 0; | |
461 | } | |
462 | ||
463 | static inline void sysfs_remove_link_from_group(struct kobject *kobj, | |
464 | const char *group_name, const char *link_name) | |
465 | { | |
466 | } | |
467 | ||
37c1c04c JS |
468 | static inline int __compat_only_sysfs_link_entry_to_kobj( |
469 | struct kobject *kobj, | |
470 | struct kobject *target_kobj, | |
471 | const char *target_name) | |
472 | { | |
473 | return 0; | |
474 | } | |
475 | ||
8c0e3998 TP |
476 | static inline void sysfs_notify(struct kobject *kobj, const char *dir, |
477 | const char *attr) | |
4508a7a7 N |
478 | { |
479 | } | |
480 | ||
f20a9ead AM |
481 | static inline int __must_check sysfs_init(void) |
482 | { | |
483 | return 0; | |
484 | } | |
485 | ||
fa4cd451 TH |
486 | static inline void sysfs_enable_ns(struct kernfs_node *kn) |
487 | { | |
488 | } | |
489 | ||
1da177e4 LT |
490 | #endif /* CONFIG_SYSFS */ |
491 | ||
58292cbe TH |
492 | static inline int __must_check sysfs_create_file(struct kobject *kobj, |
493 | const struct attribute *attr) | |
494 | { | |
495 | return sysfs_create_file_ns(kobj, attr, NULL); | |
496 | } | |
497 | ||
498 | static inline void sysfs_remove_file(struct kobject *kobj, | |
499 | const struct attribute *attr) | |
500 | { | |
78e1da62 | 501 | sysfs_remove_file_ns(kobj, attr, NULL); |
58292cbe TH |
502 | } |
503 | ||
4b30ee58 TH |
504 | static inline int sysfs_rename_link(struct kobject *kobj, struct kobject *target, |
505 | const char *old_name, const char *new_name) | |
506 | { | |
507 | return sysfs_rename_link_ns(kobj, target, old_name, new_name, NULL); | |
508 | } | |
509 | ||
324a56e1 | 510 | static inline void sysfs_notify_dirent(struct kernfs_node *kn) |
ccf73cf3 | 511 | { |
324a56e1 | 512 | kernfs_notify(kn); |
ccf73cf3 TH |
513 | } |
514 | ||
324a56e1 | 515 | static inline struct kernfs_node *sysfs_get_dirent(struct kernfs_node *parent, |
89cf2a20 | 516 | const char *name) |
388975cc | 517 | { |
324a56e1 | 518 | return kernfs_find_and_get(parent, name); |
388975cc TH |
519 | } |
520 | ||
324a56e1 | 521 | static inline struct kernfs_node *sysfs_get(struct kernfs_node *kn) |
024f6471 | 522 | { |
324a56e1 TH |
523 | kernfs_get(kn); |
524 | return kn; | |
ccf73cf3 TH |
525 | } |
526 | ||
324a56e1 | 527 | static inline void sysfs_put(struct kernfs_node *kn) |
ccf73cf3 | 528 | { |
324a56e1 | 529 | kernfs_put(kn); |
024f6471 TH |
530 | } |
531 | ||
1da177e4 | 532 | #endif /* _SYSFS_H_ */ |