Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * sysfs.h - definitions for the device driver filesystem | |
3 | * | |
4 | * Copyright (c) 2001,2002 Patrick Mochel | |
5 | * Copyright (c) 2004 Silicon Graphics, Inc. | |
6d66f5cd TH |
6 | * Copyright (c) 2007 SUSE Linux Products GmbH |
7 | * Copyright (c) 2007 Tejun Heo <teheo@suse.de> | |
1da177e4 LT |
8 | * |
9 | * Please see Documentation/filesystems/sysfs.txt for more information. | |
10 | */ | |
11 | ||
12 | #ifndef _SYSFS_H_ | |
13 | #define _SYSFS_H_ | |
14 | ||
b8441ed2 | 15 | #include <linux/kernfs.h> |
4a7fb636 | 16 | #include <linux/compiler.h> |
5851fadc | 17 | #include <linux/errno.h> |
bf0acc33 | 18 | #include <linux/list.h> |
6992f533 | 19 | #include <linux/lockdep.h> |
8488a38f | 20 | #include <linux/kobject_ns.h> |
3493f69f | 21 | #include <linux/stat.h> |
60063497 | 22 | #include <linux/atomic.h> |
1da177e4 LT |
23 | |
24 | struct kobject; | |
25 | struct module; | |
6ab9cea1 | 26 | struct bin_attribute; |
3ff195b0 | 27 | enum kobj_ns_type; |
1da177e4 LT |
28 | |
29 | struct attribute { | |
59f69015 | 30 | const char *name; |
9104e427 | 31 | umode_t mode; |
6992f533 | 32 | #ifdef CONFIG_DEBUG_LOCK_ALLOC |
356c05d5 | 33 | bool ignore_lockdep:1; |
6992f533 EB |
34 | struct lock_class_key *key; |
35 | struct lock_class_key skey; | |
36 | #endif | |
1da177e4 LT |
37 | }; |
38 | ||
35960258 EB |
39 | /** |
40 | * sysfs_attr_init - initialize a dynamically allocated sysfs attribute | |
41 | * @attr: struct attribute to initialize | |
42 | * | |
43 | * Initialize a dynamically allocated struct attribute so we can | |
44 | * make lockdep happy. This is a new requirement for attributes | |
45 | * and initially this is only needed when lockdep is enabled. | |
46 | * Lockdep gives a nice error when your attribute is added to | |
47 | * sysfs if you don't have this. | |
48 | */ | |
6992f533 EB |
49 | #ifdef CONFIG_DEBUG_LOCK_ALLOC |
50 | #define sysfs_attr_init(attr) \ | |
51 | do { \ | |
52 | static struct lock_class_key __key; \ | |
53 | \ | |
54 | (attr)->key = &__key; \ | |
5da5c9c8 | 55 | } while (0) |
6992f533 | 56 | #else |
5da5c9c8 | 57 | #define sysfs_attr_init(attr) do {} while (0) |
6992f533 EB |
58 | #endif |
59 | ||
ba61af6f GR |
60 | /** |
61 | * struct attribute_group - data structure used to declare an attribute group. | |
62 | * @name: Optional: Attribute group name | |
63 | * If specified, the attribute group will be created in | |
64 | * a new subdirectory with this name. | |
65 | * @is_visible: Optional: Function to return permissions associated with an | |
66 | * attribute of the group. Will be called repeatedly for each | |
7f5028cf EL |
67 | * non-binary attribute in the group. Only read/write |
68 | * permissions as well as SYSFS_PREALLOC are accepted. Must | |
69 | * return 0 if an attribute is not visible. The returned value | |
70 | * will replace static permissions defined in struct attribute. | |
71 | * @is_bin_visible: | |
72 | * Optional: Function to return permissions associated with a | |
73 | * binary attribute of the group. Will be called repeatedly | |
74 | * for each binary attribute in the group. Only read/write | |
75 | * permissions as well as SYSFS_PREALLOC are accepted. Must | |
76 | * return 0 if a binary attribute is not visible. The returned | |
77 | * value will replace static permissions defined in | |
78 | * struct bin_attribute. | |
ba61af6f GR |
79 | * @attrs: Pointer to NULL terminated list of attributes. |
80 | * @bin_attrs: Pointer to NULL terminated list of binary attributes. | |
81 | * Either attrs or bin_attrs or both must be provided. | |
82 | */ | |
1da177e4 | 83 | struct attribute_group { |
59f69015 | 84 | const char *name; |
587a1f16 | 85 | umode_t (*is_visible)(struct kobject *, |
d4acd722 | 86 | struct attribute *, int); |
7f5028cf EL |
87 | umode_t (*is_bin_visible)(struct kobject *, |
88 | struct bin_attribute *, int); | |
59f69015 | 89 | struct attribute **attrs; |
6ab9cea1 | 90 | struct bin_attribute **bin_attrs; |
1da177e4 LT |
91 | }; |
92 | ||
1da177e4 LT |
93 | /** |
94 | * Use these macros to make defining attributes easier. See include/linux/device.h | |
95 | * for examples.. | |
96 | */ | |
97 | ||
2b75869b N |
98 | #define SYSFS_PREALLOC 010000 |
99 | ||
5da5c9c8 | 100 | #define __ATTR(_name, _mode, _show, _store) { \ |
58f86cc8 RR |
101 | .attr = {.name = __stringify(_name), \ |
102 | .mode = VERIFY_OCTAL_PERMISSIONS(_mode) }, \ | |
aa01aa3c OS |
103 | .show = _show, \ |
104 | .store = _store, \ | |
1da177e4 LT |
105 | } |
106 | ||
2b75869b N |
107 | #define __ATTR_PREALLOC(_name, _mode, _show, _store) { \ |
108 | .attr = {.name = __stringify(_name), \ | |
109 | .mode = SYSFS_PREALLOC | VERIFY_OCTAL_PERMISSIONS(_mode) },\ | |
110 | .show = _show, \ | |
111 | .store = _store, \ | |
112 | } | |
113 | ||
aa01aa3c OS |
114 | #define __ATTR_RO(_name) { \ |
115 | .attr = { .name = __stringify(_name), .mode = S_IRUGO }, \ | |
116 | .show = _name##_show, \ | |
1da177e4 LT |
117 | } |
118 | ||
a65fcce7 GKH |
119 | #define __ATTR_WO(_name) { \ |
120 | .attr = { .name = __stringify(_name), .mode = S_IWUSR }, \ | |
121 | .store = _name##_store, \ | |
122 | } | |
123 | ||
aa01aa3c OS |
124 | #define __ATTR_RW(_name) __ATTR(_name, (S_IWUSR | S_IRUGO), \ |
125 | _name##_show, _name##_store) | |
b9b32597 | 126 | |
1da177e4 | 127 | #define __ATTR_NULL { .attr = { .name = NULL } } |
356c05d5 AS |
128 | |
129 | #ifdef CONFIG_DEBUG_LOCK_ALLOC | |
130 | #define __ATTR_IGNORE_LOCKDEP(_name, _mode, _show, _store) { \ | |
131 | .attr = {.name = __stringify(_name), .mode = _mode, \ | |
132 | .ignore_lockdep = true }, \ | |
133 | .show = _show, \ | |
134 | .store = _store, \ | |
135 | } | |
136 | #else | |
137 | #define __ATTR_IGNORE_LOCKDEP __ATTR | |
138 | #endif | |
1da177e4 | 139 | |
3493f69f OS |
140 | #define __ATTRIBUTE_GROUPS(_name) \ |
141 | static const struct attribute_group *_name##_groups[] = { \ | |
142 | &_name##_group, \ | |
f2f37f58 GKH |
143 | NULL, \ |
144 | } | |
145 | ||
3493f69f OS |
146 | #define ATTRIBUTE_GROUPS(_name) \ |
147 | static const struct attribute_group _name##_group = { \ | |
148 | .attrs = _name##_attrs, \ | |
149 | }; \ | |
150 | __ATTRIBUTE_GROUPS(_name) | |
151 | ||
2c3c8bea | 152 | struct file; |
1da177e4 LT |
153 | struct vm_area_struct; |
154 | ||
155 | struct bin_attribute { | |
156 | struct attribute attr; | |
157 | size_t size; | |
158 | void *private; | |
2c3c8bea | 159 | ssize_t (*read)(struct file *, struct kobject *, struct bin_attribute *, |
91a69029 | 160 | char *, loff_t, size_t); |
5da5c9c8 | 161 | ssize_t (*write)(struct file *, struct kobject *, struct bin_attribute *, |
91a69029 | 162 | char *, loff_t, size_t); |
2c3c8bea | 163 | int (*mmap)(struct file *, struct kobject *, struct bin_attribute *attr, |
1da177e4 LT |
164 | struct vm_area_struct *vma); |
165 | }; | |
166 | ||
35960258 EB |
167 | /** |
168 | * sysfs_bin_attr_init - initialize a dynamically allocated bin_attribute | |
169 | * @attr: struct bin_attribute to initialize | |
170 | * | |
171 | * Initialize a dynamically allocated struct bin_attribute so we | |
172 | * can make lockdep happy. This is a new requirement for | |
173 | * attributes and initially this is only needed when lockdep is | |
174 | * enabled. Lockdep gives a nice error when your attribute is | |
175 | * added to sysfs if you don't have this. | |
176 | */ | |
62e877b8 | 177 | #define sysfs_bin_attr_init(bin_attr) sysfs_attr_init(&(bin_attr)->attr) |
6992f533 | 178 | |
3493f69f OS |
179 | /* macros to create static binary attributes easier */ |
180 | #define __BIN_ATTR(_name, _mode, _read, _write, _size) { \ | |
181 | .attr = { .name = __stringify(_name), .mode = _mode }, \ | |
182 | .read = _read, \ | |
183 | .write = _write, \ | |
184 | .size = _size, \ | |
185 | } | |
186 | ||
187 | #define __BIN_ATTR_RO(_name, _size) { \ | |
188 | .attr = { .name = __stringify(_name), .mode = S_IRUGO }, \ | |
189 | .read = _name##_read, \ | |
190 | .size = _size, \ | |
e4b63603 GKH |
191 | } |
192 | ||
3493f69f OS |
193 | #define __BIN_ATTR_RW(_name, _size) __BIN_ATTR(_name, \ |
194 | (S_IWUSR | S_IRUGO), _name##_read, \ | |
68531526 | 195 | _name##_write, _size) |
3493f69f OS |
196 | |
197 | #define __BIN_ATTR_NULL __ATTR_NULL | |
198 | ||
199 | #define BIN_ATTR(_name, _mode, _read, _write, _size) \ | |
200 | struct bin_attribute bin_attr_##_name = __BIN_ATTR(_name, _mode, _read, \ | |
201 | _write, _size) | |
202 | ||
203 | #define BIN_ATTR_RO(_name, _size) \ | |
204 | struct bin_attribute bin_attr_##_name = __BIN_ATTR_RO(_name, _size) | |
205 | ||
206 | #define BIN_ATTR_RW(_name, _size) \ | |
207 | struct bin_attribute bin_attr_##_name = __BIN_ATTR_RW(_name, _size) | |
208 | ||
1da177e4 | 209 | struct sysfs_ops { |
5da5c9c8 GKH |
210 | ssize_t (*show)(struct kobject *, struct attribute *, char *); |
211 | ssize_t (*store)(struct kobject *, struct attribute *, const char *, size_t); | |
1da177e4 LT |
212 | }; |
213 | ||
1da177e4 LT |
214 | #ifdef CONFIG_SYSFS |
215 | ||
e34ff490 | 216 | int __must_check sysfs_create_dir_ns(struct kobject *kobj, const void *ns); |
59f69015 | 217 | void sysfs_remove_dir(struct kobject *kobj); |
e34ff490 TH |
218 | int __must_check sysfs_rename_dir_ns(struct kobject *kobj, const char *new_name, |
219 | const void *new_ns); | |
220 | int __must_check sysfs_move_dir_ns(struct kobject *kobj, | |
221 | struct kobject *new_parent_kobj, | |
222 | const void *new_ns); | |
87d2846f EB |
223 | int __must_check sysfs_create_mount_point(struct kobject *parent_kobj, |
224 | const char *name); | |
225 | void sysfs_remove_mount_point(struct kobject *parent_kobj, | |
226 | const char *name); | |
31e5abe9 | 227 | |
58292cbe TH |
228 | int __must_check sysfs_create_file_ns(struct kobject *kobj, |
229 | const struct attribute *attr, | |
230 | const void *ns); | |
1c205ae1 AK |
231 | int __must_check sysfs_create_files(struct kobject *kobj, |
232 | const struct attribute **attr); | |
49c19400 | 233 | int __must_check sysfs_chmod_file(struct kobject *kobj, |
48176a97 | 234 | const struct attribute *attr, umode_t mode); |
58292cbe TH |
235 | void sysfs_remove_file_ns(struct kobject *kobj, const struct attribute *attr, |
236 | const void *ns); | |
6b0afc2a | 237 | bool sysfs_remove_file_self(struct kobject *kobj, const struct attribute *attr); |
1c205ae1 | 238 | void sysfs_remove_files(struct kobject *kobj, const struct attribute **attr); |
1da177e4 | 239 | |
4a7fb636 | 240 | int __must_check sysfs_create_bin_file(struct kobject *kobj, |
66ecb92b PC |
241 | const struct bin_attribute *attr); |
242 | void sysfs_remove_bin_file(struct kobject *kobj, | |
243 | const struct bin_attribute *attr); | |
1da177e4 | 244 | |
59f69015 TH |
245 | int __must_check sysfs_create_link(struct kobject *kobj, struct kobject *target, |
246 | const char *name); | |
36ce6dad CH |
247 | int __must_check sysfs_create_link_nowarn(struct kobject *kobj, |
248 | struct kobject *target, | |
249 | const char *name); | |
59f69015 TH |
250 | void sysfs_remove_link(struct kobject *kobj, const char *name); |
251 | ||
4b30ee58 TH |
252 | int sysfs_rename_link_ns(struct kobject *kobj, struct kobject *target, |
253 | const char *old_name, const char *new_name, | |
254 | const void *new_ns); | |
7cb32942 | 255 | |
746edb7a EB |
256 | void sysfs_delete_link(struct kobject *dir, struct kobject *targ, |
257 | const char *name); | |
258 | ||
59f69015 TH |
259 | int __must_check sysfs_create_group(struct kobject *kobj, |
260 | const struct attribute_group *grp); | |
3e9b2bae GKH |
261 | int __must_check sysfs_create_groups(struct kobject *kobj, |
262 | const struct attribute_group **groups); | |
0f423895 JB |
263 | int sysfs_update_group(struct kobject *kobj, |
264 | const struct attribute_group *grp); | |
59f69015 TH |
265 | void sysfs_remove_group(struct kobject *kobj, |
266 | const struct attribute_group *grp); | |
3e9b2bae GKH |
267 | void sysfs_remove_groups(struct kobject *kobj, |
268 | const struct attribute_group **groups); | |
dfa87c82 | 269 | int sysfs_add_file_to_group(struct kobject *kobj, |
59f69015 | 270 | const struct attribute *attr, const char *group); |
dfa87c82 | 271 | void sysfs_remove_file_from_group(struct kobject *kobj, |
59f69015 | 272 | const struct attribute *attr, const char *group); |
69d44ffb AS |
273 | int sysfs_merge_group(struct kobject *kobj, |
274 | const struct attribute_group *grp); | |
275 | void sysfs_unmerge_group(struct kobject *kobj, | |
276 | const struct attribute_group *grp); | |
0bb8f3d6 RW |
277 | int sysfs_add_link_to_group(struct kobject *kobj, const char *group_name, |
278 | struct kobject *target, const char *link_name); | |
279 | void sysfs_remove_link_from_group(struct kobject *kobj, const char *group_name, | |
280 | const char *link_name); | |
37c1c04c JS |
281 | int __compat_only_sysfs_link_entry_to_kobj(struct kobject *kobj, |
282 | struct kobject *target_kobj, | |
283 | const char *target_name); | |
dfa87c82 | 284 | |
8c0e3998 | 285 | void sysfs_notify(struct kobject *kobj, const char *dir, const char *attr); |
3ff195b0 | 286 | |
f1282c84 | 287 | int __must_check sysfs_init(void); |
f20a9ead | 288 | |
fa4cd451 TH |
289 | static inline void sysfs_enable_ns(struct kernfs_node *kn) |
290 | { | |
291 | return kernfs_enable_ns(kn); | |
292 | } | |
293 | ||
1da177e4 LT |
294 | #else /* CONFIG_SYSFS */ |
295 | ||
e34ff490 | 296 | static inline int sysfs_create_dir_ns(struct kobject *kobj, const void *ns) |
1da177e4 LT |
297 | { |
298 | return 0; | |
299 | } | |
300 | ||
59f69015 | 301 | static inline void sysfs_remove_dir(struct kobject *kobj) |
1da177e4 | 302 | { |
1da177e4 LT |
303 | } |
304 | ||
e34ff490 TH |
305 | static inline int sysfs_rename_dir_ns(struct kobject *kobj, |
306 | const char *new_name, const void *new_ns) | |
1da177e4 | 307 | { |
0b4a4fea | 308 | return 0; |
1da177e4 LT |
309 | } |
310 | ||
e34ff490 TH |
311 | static inline int sysfs_move_dir_ns(struct kobject *kobj, |
312 | struct kobject *new_parent_kobj, | |
313 | const void *new_ns) | |
8a82472f CH |
314 | { |
315 | return 0; | |
316 | } | |
317 | ||
87d2846f EB |
318 | static inline int sysfs_create_mount_point(struct kobject *parent_kobj, |
319 | const char *name) | |
320 | { | |
321 | return 0; | |
322 | } | |
323 | ||
324 | static inline void sysfs_remove_mount_point(struct kobject *parent_kobj, | |
325 | const char *name) | |
326 | { | |
327 | } | |
328 | ||
58292cbe TH |
329 | static inline int sysfs_create_file_ns(struct kobject *kobj, |
330 | const struct attribute *attr, | |
331 | const void *ns) | |
1da177e4 LT |
332 | { |
333 | return 0; | |
334 | } | |
335 | ||
1c205ae1 AK |
336 | static inline int sysfs_create_files(struct kobject *kobj, |
337 | const struct attribute **attr) | |
338 | { | |
339 | return 0; | |
340 | } | |
341 | ||
59f69015 | 342 | static inline int sysfs_chmod_file(struct kobject *kobj, |
48176a97 | 343 | const struct attribute *attr, umode_t mode) |
31e5abe9 KS |
344 | { |
345 | return 0; | |
346 | } | |
1da177e4 | 347 | |
58292cbe TH |
348 | static inline void sysfs_remove_file_ns(struct kobject *kobj, |
349 | const struct attribute *attr, | |
350 | const void *ns) | |
1da177e4 | 351 | { |
1da177e4 LT |
352 | } |
353 | ||
6b0afc2a TH |
354 | static inline bool sysfs_remove_file_self(struct kobject *kobj, |
355 | const struct attribute *attr) | |
356 | { | |
357 | return false; | |
358 | } | |
359 | ||
1c205ae1 AK |
360 | static inline void sysfs_remove_files(struct kobject *kobj, |
361 | const struct attribute **attr) | |
362 | { | |
363 | } | |
364 | ||
59f69015 | 365 | static inline int sysfs_create_bin_file(struct kobject *kobj, |
66ecb92b | 366 | const struct bin_attribute *attr) |
1da177e4 LT |
367 | { |
368 | return 0; | |
369 | } | |
370 | ||
3612e06b | 371 | static inline void sysfs_remove_bin_file(struct kobject *kobj, |
66ecb92b | 372 | const struct bin_attribute *attr) |
1da177e4 | 373 | { |
1da177e4 LT |
374 | } |
375 | ||
59f69015 TH |
376 | static inline int sysfs_create_link(struct kobject *kobj, |
377 | struct kobject *target, const char *name) | |
1da177e4 LT |
378 | { |
379 | return 0; | |
380 | } | |
381 | ||
36ce6dad CH |
382 | static inline int sysfs_create_link_nowarn(struct kobject *kobj, |
383 | struct kobject *target, | |
384 | const char *name) | |
385 | { | |
386 | return 0; | |
387 | } | |
388 | ||
59f69015 | 389 | static inline void sysfs_remove_link(struct kobject *kobj, const char *name) |
1da177e4 | 390 | { |
1da177e4 LT |
391 | } |
392 | ||
4b30ee58 TH |
393 | static inline int sysfs_rename_link_ns(struct kobject *k, struct kobject *t, |
394 | const char *old_name, | |
395 | const char *new_name, const void *ns) | |
7cb32942 EB |
396 | { |
397 | return 0; | |
398 | } | |
399 | ||
746edb7a EB |
400 | static inline void sysfs_delete_link(struct kobject *k, struct kobject *t, |
401 | const char *name) | |
402 | { | |
403 | } | |
404 | ||
59f69015 TH |
405 | static inline int sysfs_create_group(struct kobject *kobj, |
406 | const struct attribute_group *grp) | |
1da177e4 LT |
407 | { |
408 | return 0; | |
409 | } | |
410 | ||
f7998780 GKH |
411 | static inline int sysfs_create_groups(struct kobject *kobj, |
412 | const struct attribute_group **groups) | |
413 | { | |
574979c6 | 414 | return 0; |
f7998780 GKH |
415 | } |
416 | ||
1cbfb7a5 RD |
417 | static inline int sysfs_update_group(struct kobject *kobj, |
418 | const struct attribute_group *grp) | |
419 | { | |
420 | return 0; | |
421 | } | |
422 | ||
59f69015 TH |
423 | static inline void sysfs_remove_group(struct kobject *kobj, |
424 | const struct attribute_group *grp) | |
1da177e4 | 425 | { |
1da177e4 LT |
426 | } |
427 | ||
f7998780 GKH |
428 | static inline void sysfs_remove_groups(struct kobject *kobj, |
429 | const struct attribute_group **groups) | |
430 | { | |
431 | } | |
432 | ||
dfa87c82 AS |
433 | static inline int sysfs_add_file_to_group(struct kobject *kobj, |
434 | const struct attribute *attr, const char *group) | |
435 | { | |
436 | return 0; | |
437 | } | |
438 | ||
439 | static inline void sysfs_remove_file_from_group(struct kobject *kobj, | |
d701d8a3 | 440 | const struct attribute *attr, const char *group) |
dfa87c82 | 441 | { |
dfa87c82 AS |
442 | } |
443 | ||
69d44ffb AS |
444 | static inline int sysfs_merge_group(struct kobject *kobj, |
445 | const struct attribute_group *grp) | |
446 | { | |
447 | return 0; | |
448 | } | |
449 | ||
450 | static inline void sysfs_unmerge_group(struct kobject *kobj, | |
451 | const struct attribute_group *grp) | |
452 | { | |
453 | } | |
454 | ||
0bb8f3d6 RW |
455 | static inline int sysfs_add_link_to_group(struct kobject *kobj, |
456 | const char *group_name, struct kobject *target, | |
457 | const char *link_name) | |
458 | { | |
459 | return 0; | |
460 | } | |
461 | ||
462 | static inline void sysfs_remove_link_from_group(struct kobject *kobj, | |
463 | const char *group_name, const char *link_name) | |
464 | { | |
465 | } | |
466 | ||
37c1c04c JS |
467 | static inline int __compat_only_sysfs_link_entry_to_kobj( |
468 | struct kobject *kobj, | |
469 | struct kobject *target_kobj, | |
470 | const char *target_name) | |
471 | { | |
472 | return 0; | |
473 | } | |
474 | ||
8c0e3998 TP |
475 | static inline void sysfs_notify(struct kobject *kobj, const char *dir, |
476 | const char *attr) | |
4508a7a7 N |
477 | { |
478 | } | |
479 | ||
f20a9ead AM |
480 | static inline int __must_check sysfs_init(void) |
481 | { | |
482 | return 0; | |
483 | } | |
484 | ||
fa4cd451 TH |
485 | static inline void sysfs_enable_ns(struct kernfs_node *kn) |
486 | { | |
487 | } | |
488 | ||
1da177e4 LT |
489 | #endif /* CONFIG_SYSFS */ |
490 | ||
58292cbe TH |
491 | static inline int __must_check sysfs_create_file(struct kobject *kobj, |
492 | const struct attribute *attr) | |
493 | { | |
494 | return sysfs_create_file_ns(kobj, attr, NULL); | |
495 | } | |
496 | ||
497 | static inline void sysfs_remove_file(struct kobject *kobj, | |
498 | const struct attribute *attr) | |
499 | { | |
78e1da62 | 500 | sysfs_remove_file_ns(kobj, attr, NULL); |
58292cbe TH |
501 | } |
502 | ||
4b30ee58 TH |
503 | static inline int sysfs_rename_link(struct kobject *kobj, struct kobject *target, |
504 | const char *old_name, const char *new_name) | |
505 | { | |
506 | return sysfs_rename_link_ns(kobj, target, old_name, new_name, NULL); | |
507 | } | |
508 | ||
324a56e1 | 509 | static inline void sysfs_notify_dirent(struct kernfs_node *kn) |
ccf73cf3 | 510 | { |
324a56e1 | 511 | kernfs_notify(kn); |
ccf73cf3 TH |
512 | } |
513 | ||
324a56e1 TH |
514 | static inline struct kernfs_node *sysfs_get_dirent(struct kernfs_node *parent, |
515 | const unsigned char *name) | |
388975cc | 516 | { |
324a56e1 | 517 | return kernfs_find_and_get(parent, name); |
388975cc TH |
518 | } |
519 | ||
324a56e1 | 520 | static inline struct kernfs_node *sysfs_get(struct kernfs_node *kn) |
024f6471 | 521 | { |
324a56e1 TH |
522 | kernfs_get(kn); |
523 | return kn; | |
ccf73cf3 TH |
524 | } |
525 | ||
324a56e1 | 526 | static inline void sysfs_put(struct kernfs_node *kn) |
ccf73cf3 | 527 | { |
324a56e1 | 528 | kernfs_put(kn); |
024f6471 TH |
529 | } |
530 | ||
1da177e4 | 531 | #endif /* _SYSFS_H_ */ |