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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 | ||
82af5b66 | 199 | #define __BIN_ATTR_WO(_name, _size) { \ |
7f905761 | 200 | .attr = { .name = __stringify(_name), .mode = 0200 }, \ |
82af5b66 | 201 | .write = _name##_write, \ |
7f905761 GKH |
202 | .size = _size, \ |
203 | } | |
204 | ||
353c6dda JP |
205 | #define __BIN_ATTR_RW(_name, _size) \ |
206 | __BIN_ATTR(_name, 0644, _name##_read, _name##_write, _size) | |
3493f69f OS |
207 | |
208 | #define __BIN_ATTR_NULL __ATTR_NULL | |
209 | ||
210 | #define BIN_ATTR(_name, _mode, _read, _write, _size) \ | |
211 | struct bin_attribute bin_attr_##_name = __BIN_ATTR(_name, _mode, _read, \ | |
212 | _write, _size) | |
213 | ||
214 | #define BIN_ATTR_RO(_name, _size) \ | |
215 | struct bin_attribute bin_attr_##_name = __BIN_ATTR_RO(_name, _size) | |
216 | ||
7f905761 GKH |
217 | #define BIN_ATTR_WO(_name, _size) \ |
218 | struct bin_attribute bin_attr_##_name = __BIN_ATTR_WO(_name, _size) | |
219 | ||
3493f69f OS |
220 | #define BIN_ATTR_RW(_name, _size) \ |
221 | struct bin_attribute bin_attr_##_name = __BIN_ATTR_RW(_name, _size) | |
222 | ||
1da177e4 | 223 | struct sysfs_ops { |
5da5c9c8 GKH |
224 | ssize_t (*show)(struct kobject *, struct attribute *, char *); |
225 | ssize_t (*store)(struct kobject *, struct attribute *, const char *, size_t); | |
1da177e4 LT |
226 | }; |
227 | ||
1da177e4 LT |
228 | #ifdef CONFIG_SYSFS |
229 | ||
e34ff490 | 230 | int __must_check sysfs_create_dir_ns(struct kobject *kobj, const void *ns); |
59f69015 | 231 | void sysfs_remove_dir(struct kobject *kobj); |
e34ff490 TH |
232 | int __must_check sysfs_rename_dir_ns(struct kobject *kobj, const char *new_name, |
233 | const void *new_ns); | |
234 | int __must_check sysfs_move_dir_ns(struct kobject *kobj, | |
235 | struct kobject *new_parent_kobj, | |
236 | const void *new_ns); | |
87d2846f EB |
237 | int __must_check sysfs_create_mount_point(struct kobject *parent_kobj, |
238 | const char *name); | |
239 | void sysfs_remove_mount_point(struct kobject *parent_kobj, | |
240 | const char *name); | |
31e5abe9 | 241 | |
58292cbe TH |
242 | int __must_check sysfs_create_file_ns(struct kobject *kobj, |
243 | const struct attribute *attr, | |
244 | const void *ns); | |
1c205ae1 | 245 | int __must_check sysfs_create_files(struct kobject *kobj, |
9ee4685c | 246 | const struct attribute * const *attr); |
49c19400 | 247 | int __must_check sysfs_chmod_file(struct kobject *kobj, |
48176a97 | 248 | const struct attribute *attr, umode_t mode); |
2afc9166 BVA |
249 | struct kernfs_node *sysfs_break_active_protection(struct kobject *kobj, |
250 | const struct attribute *attr); | |
251 | void sysfs_unbreak_active_protection(struct kernfs_node *kn); | |
58292cbe TH |
252 | void sysfs_remove_file_ns(struct kobject *kobj, const struct attribute *attr, |
253 | const void *ns); | |
6b0afc2a | 254 | bool sysfs_remove_file_self(struct kobject *kobj, const struct attribute *attr); |
9ee4685c | 255 | void sysfs_remove_files(struct kobject *kobj, const struct attribute * const *attr); |
1da177e4 | 256 | |
4a7fb636 | 257 | int __must_check sysfs_create_bin_file(struct kobject *kobj, |
66ecb92b PC |
258 | const struct bin_attribute *attr); |
259 | void sysfs_remove_bin_file(struct kobject *kobj, | |
260 | const struct bin_attribute *attr); | |
1da177e4 | 261 | |
59f69015 TH |
262 | int __must_check sysfs_create_link(struct kobject *kobj, struct kobject *target, |
263 | const char *name); | |
36ce6dad CH |
264 | int __must_check sysfs_create_link_nowarn(struct kobject *kobj, |
265 | struct kobject *target, | |
266 | const char *name); | |
59f69015 TH |
267 | void sysfs_remove_link(struct kobject *kobj, const char *name); |
268 | ||
4b30ee58 TH |
269 | int sysfs_rename_link_ns(struct kobject *kobj, struct kobject *target, |
270 | const char *old_name, const char *new_name, | |
271 | const void *new_ns); | |
7cb32942 | 272 | |
746edb7a EB |
273 | void sysfs_delete_link(struct kobject *dir, struct kobject *targ, |
274 | const char *name); | |
275 | ||
59f69015 TH |
276 | int __must_check sysfs_create_group(struct kobject *kobj, |
277 | const struct attribute_group *grp); | |
3e9b2bae GKH |
278 | int __must_check sysfs_create_groups(struct kobject *kobj, |
279 | const struct attribute_group **groups); | |
aac1f7f9 JO |
280 | int __must_check sysfs_update_groups(struct kobject *kobj, |
281 | const struct attribute_group **groups); | |
0f423895 JB |
282 | int sysfs_update_group(struct kobject *kobj, |
283 | const struct attribute_group *grp); | |
59f69015 TH |
284 | void sysfs_remove_group(struct kobject *kobj, |
285 | const struct attribute_group *grp); | |
3e9b2bae GKH |
286 | void sysfs_remove_groups(struct kobject *kobj, |
287 | const struct attribute_group **groups); | |
dfa87c82 | 288 | int sysfs_add_file_to_group(struct kobject *kobj, |
59f69015 | 289 | const struct attribute *attr, const char *group); |
dfa87c82 | 290 | void sysfs_remove_file_from_group(struct kobject *kobj, |
59f69015 | 291 | const struct attribute *attr, const char *group); |
69d44ffb AS |
292 | int sysfs_merge_group(struct kobject *kobj, |
293 | const struct attribute_group *grp); | |
294 | void sysfs_unmerge_group(struct kobject *kobj, | |
295 | const struct attribute_group *grp); | |
0bb8f3d6 RW |
296 | int sysfs_add_link_to_group(struct kobject *kobj, const char *group_name, |
297 | struct kobject *target, const char *link_name); | |
298 | void sysfs_remove_link_from_group(struct kobject *kobj, const char *group_name, | |
299 | const char *link_name); | |
9255782f SJ |
300 | int compat_only_sysfs_link_entry_to_kobj(struct kobject *kobj, |
301 | struct kobject *target_kobj, | |
302 | const char *target_name, | |
303 | const char *symlink_name); | |
dfa87c82 | 304 | |
8c0e3998 | 305 | void sysfs_notify(struct kobject *kobj, const char *dir, const char *attr); |
3ff195b0 | 306 | |
f1282c84 | 307 | int __must_check sysfs_init(void); |
f20a9ead | 308 | |
fa4cd451 TH |
309 | static inline void sysfs_enable_ns(struct kernfs_node *kn) |
310 | { | |
311 | return kernfs_enable_ns(kn); | |
312 | } | |
313 | ||
f70ce185 CB |
314 | int sysfs_file_change_owner(struct kobject *kobj, const char *name, kuid_t kuid, |
315 | kgid_t kgid); | |
2c4f9401 | 316 | int sysfs_change_owner(struct kobject *kobj, kuid_t kuid, kgid_t kgid); |
0666a3ae CB |
317 | int sysfs_link_change_owner(struct kobject *kobj, struct kobject *targ, |
318 | const char *name, kuid_t kuid, kgid_t kgid); | |
303a4276 CB |
319 | int sysfs_groups_change_owner(struct kobject *kobj, |
320 | const struct attribute_group **groups, | |
321 | kuid_t kuid, kgid_t kgid); | |
322 | int sysfs_group_change_owner(struct kobject *kobj, | |
323 | const struct attribute_group *groups, kuid_t kuid, | |
324 | kgid_t kgid); | |
f70ce185 | 325 | |
1da177e4 LT |
326 | #else /* CONFIG_SYSFS */ |
327 | ||
e34ff490 | 328 | static inline int sysfs_create_dir_ns(struct kobject *kobj, const void *ns) |
1da177e4 LT |
329 | { |
330 | return 0; | |
331 | } | |
332 | ||
59f69015 | 333 | static inline void sysfs_remove_dir(struct kobject *kobj) |
1da177e4 | 334 | { |
1da177e4 LT |
335 | } |
336 | ||
e34ff490 TH |
337 | static inline int sysfs_rename_dir_ns(struct kobject *kobj, |
338 | const char *new_name, const void *new_ns) | |
1da177e4 | 339 | { |
0b4a4fea | 340 | return 0; |
1da177e4 LT |
341 | } |
342 | ||
e34ff490 TH |
343 | static inline int sysfs_move_dir_ns(struct kobject *kobj, |
344 | struct kobject *new_parent_kobj, | |
345 | const void *new_ns) | |
8a82472f CH |
346 | { |
347 | return 0; | |
348 | } | |
349 | ||
87d2846f EB |
350 | static inline int sysfs_create_mount_point(struct kobject *parent_kobj, |
351 | const char *name) | |
352 | { | |
353 | return 0; | |
354 | } | |
355 | ||
356 | static inline void sysfs_remove_mount_point(struct kobject *parent_kobj, | |
357 | const char *name) | |
358 | { | |
359 | } | |
360 | ||
58292cbe TH |
361 | static inline int sysfs_create_file_ns(struct kobject *kobj, |
362 | const struct attribute *attr, | |
363 | const void *ns) | |
1da177e4 LT |
364 | { |
365 | return 0; | |
366 | } | |
367 | ||
1c205ae1 | 368 | static inline int sysfs_create_files(struct kobject *kobj, |
9ee4685c | 369 | const struct attribute * const *attr) |
1c205ae1 AK |
370 | { |
371 | return 0; | |
372 | } | |
373 | ||
59f69015 | 374 | static inline int sysfs_chmod_file(struct kobject *kobj, |
48176a97 | 375 | const struct attribute *attr, umode_t mode) |
31e5abe9 KS |
376 | { |
377 | return 0; | |
378 | } | |
1da177e4 | 379 | |
2afc9166 BVA |
380 | static inline struct kernfs_node * |
381 | sysfs_break_active_protection(struct kobject *kobj, | |
382 | const struct attribute *attr) | |
383 | { | |
384 | return NULL; | |
385 | } | |
386 | ||
387 | static inline void sysfs_unbreak_active_protection(struct kernfs_node *kn) | |
388 | { | |
389 | } | |
390 | ||
58292cbe TH |
391 | static inline void sysfs_remove_file_ns(struct kobject *kobj, |
392 | const struct attribute *attr, | |
393 | const void *ns) | |
1da177e4 | 394 | { |
1da177e4 LT |
395 | } |
396 | ||
6b0afc2a TH |
397 | static inline bool sysfs_remove_file_self(struct kobject *kobj, |
398 | const struct attribute *attr) | |
399 | { | |
400 | return false; | |
401 | } | |
402 | ||
1c205ae1 | 403 | static inline void sysfs_remove_files(struct kobject *kobj, |
9ee4685c | 404 | const struct attribute * const *attr) |
1c205ae1 AK |
405 | { |
406 | } | |
407 | ||
59f69015 | 408 | static inline int sysfs_create_bin_file(struct kobject *kobj, |
66ecb92b | 409 | const struct bin_attribute *attr) |
1da177e4 LT |
410 | { |
411 | return 0; | |
412 | } | |
413 | ||
3612e06b | 414 | static inline void sysfs_remove_bin_file(struct kobject *kobj, |
66ecb92b | 415 | const struct bin_attribute *attr) |
1da177e4 | 416 | { |
1da177e4 LT |
417 | } |
418 | ||
59f69015 TH |
419 | static inline int sysfs_create_link(struct kobject *kobj, |
420 | struct kobject *target, const char *name) | |
1da177e4 LT |
421 | { |
422 | return 0; | |
423 | } | |
424 | ||
36ce6dad CH |
425 | static inline int sysfs_create_link_nowarn(struct kobject *kobj, |
426 | struct kobject *target, | |
427 | const char *name) | |
428 | { | |
429 | return 0; | |
430 | } | |
431 | ||
59f69015 | 432 | static inline void sysfs_remove_link(struct kobject *kobj, const char *name) |
1da177e4 | 433 | { |
1da177e4 LT |
434 | } |
435 | ||
4b30ee58 TH |
436 | static inline int sysfs_rename_link_ns(struct kobject *k, struct kobject *t, |
437 | const char *old_name, | |
438 | const char *new_name, const void *ns) | |
7cb32942 EB |
439 | { |
440 | return 0; | |
441 | } | |
442 | ||
746edb7a EB |
443 | static inline void sysfs_delete_link(struct kobject *k, struct kobject *t, |
444 | const char *name) | |
445 | { | |
446 | } | |
447 | ||
59f69015 TH |
448 | static inline int sysfs_create_group(struct kobject *kobj, |
449 | const struct attribute_group *grp) | |
1da177e4 LT |
450 | { |
451 | return 0; | |
452 | } | |
453 | ||
f7998780 GKH |
454 | static inline int sysfs_create_groups(struct kobject *kobj, |
455 | const struct attribute_group **groups) | |
456 | { | |
574979c6 | 457 | return 0; |
f7998780 GKH |
458 | } |
459 | ||
aac1f7f9 JO |
460 | static inline int sysfs_update_groups(struct kobject *kobj, |
461 | const struct attribute_group **groups) | |
462 | { | |
463 | return 0; | |
464 | } | |
465 | ||
1cbfb7a5 RD |
466 | static inline int sysfs_update_group(struct kobject *kobj, |
467 | const struct attribute_group *grp) | |
468 | { | |
469 | return 0; | |
470 | } | |
471 | ||
59f69015 TH |
472 | static inline void sysfs_remove_group(struct kobject *kobj, |
473 | const struct attribute_group *grp) | |
1da177e4 | 474 | { |
1da177e4 LT |
475 | } |
476 | ||
f7998780 GKH |
477 | static inline void sysfs_remove_groups(struct kobject *kobj, |
478 | const struct attribute_group **groups) | |
479 | { | |
480 | } | |
481 | ||
dfa87c82 AS |
482 | static inline int sysfs_add_file_to_group(struct kobject *kobj, |
483 | const struct attribute *attr, const char *group) | |
484 | { | |
485 | return 0; | |
486 | } | |
487 | ||
488 | static inline void sysfs_remove_file_from_group(struct kobject *kobj, | |
d701d8a3 | 489 | const struct attribute *attr, const char *group) |
dfa87c82 | 490 | { |
dfa87c82 AS |
491 | } |
492 | ||
69d44ffb AS |
493 | static inline int sysfs_merge_group(struct kobject *kobj, |
494 | const struct attribute_group *grp) | |
495 | { | |
496 | return 0; | |
497 | } | |
498 | ||
499 | static inline void sysfs_unmerge_group(struct kobject *kobj, | |
500 | const struct attribute_group *grp) | |
501 | { | |
502 | } | |
503 | ||
0bb8f3d6 RW |
504 | static inline int sysfs_add_link_to_group(struct kobject *kobj, |
505 | const char *group_name, struct kobject *target, | |
506 | const char *link_name) | |
507 | { | |
508 | return 0; | |
509 | } | |
510 | ||
511 | static inline void sysfs_remove_link_from_group(struct kobject *kobj, | |
512 | const char *group_name, const char *link_name) | |
513 | { | |
514 | } | |
515 | ||
9255782f SJ |
516 | static inline int compat_only_sysfs_link_entry_to_kobj(struct kobject *kobj, |
517 | struct kobject *target_kobj, | |
518 | const char *target_name, | |
519 | const char *symlink_name) | |
520 | { | |
521 | return 0; | |
522 | } | |
523 | ||
8c0e3998 TP |
524 | static inline void sysfs_notify(struct kobject *kobj, const char *dir, |
525 | const char *attr) | |
4508a7a7 N |
526 | { |
527 | } | |
528 | ||
f20a9ead AM |
529 | static inline int __must_check sysfs_init(void) |
530 | { | |
531 | return 0; | |
532 | } | |
533 | ||
fa4cd451 TH |
534 | static inline void sysfs_enable_ns(struct kernfs_node *kn) |
535 | { | |
536 | } | |
537 | ||
f70ce185 CB |
538 | static inline int sysfs_file_change_owner(struct kobject *kobj, |
539 | const char *name, kuid_t kuid, | |
0666a3ae CB |
540 | kgid_t kgid) |
541 | { | |
542 | return 0; | |
543 | } | |
544 | ||
545 | static inline int sysfs_link_change_owner(struct kobject *kobj, | |
546 | struct kobject *targ, | |
547 | const char *name, kuid_t kuid, | |
f70ce185 CB |
548 | kgid_t kgid) |
549 | { | |
550 | return 0; | |
551 | } | |
552 | ||
2c4f9401 CB |
553 | static inline int sysfs_change_owner(struct kobject *kobj, kuid_t kuid, kgid_t kgid) |
554 | { | |
555 | return 0; | |
556 | } | |
557 | ||
303a4276 CB |
558 | static inline int sysfs_groups_change_owner(struct kobject *kobj, |
559 | const struct attribute_group **groups, | |
560 | kuid_t kuid, kgid_t kgid) | |
561 | { | |
562 | return 0; | |
563 | } | |
564 | ||
565 | static inline int sysfs_group_change_owner(struct kobject *kobj, | |
8511d72f CB |
566 | const struct attribute_group *groups, |
567 | kuid_t kuid, kgid_t kgid) | |
303a4276 CB |
568 | { |
569 | return 0; | |
570 | } | |
571 | ||
1da177e4 LT |
572 | #endif /* CONFIG_SYSFS */ |
573 | ||
58292cbe TH |
574 | static inline int __must_check sysfs_create_file(struct kobject *kobj, |
575 | const struct attribute *attr) | |
576 | { | |
577 | return sysfs_create_file_ns(kobj, attr, NULL); | |
578 | } | |
579 | ||
580 | static inline void sysfs_remove_file(struct kobject *kobj, | |
581 | const struct attribute *attr) | |
582 | { | |
78e1da62 | 583 | sysfs_remove_file_ns(kobj, attr, NULL); |
58292cbe TH |
584 | } |
585 | ||
4b30ee58 TH |
586 | static inline int sysfs_rename_link(struct kobject *kobj, struct kobject *target, |
587 | const char *old_name, const char *new_name) | |
588 | { | |
589 | return sysfs_rename_link_ns(kobj, target, old_name, new_name, NULL); | |
590 | } | |
591 | ||
324a56e1 | 592 | static inline void sysfs_notify_dirent(struct kernfs_node *kn) |
ccf73cf3 | 593 | { |
324a56e1 | 594 | kernfs_notify(kn); |
ccf73cf3 TH |
595 | } |
596 | ||
324a56e1 | 597 | static inline struct kernfs_node *sysfs_get_dirent(struct kernfs_node *parent, |
89cf2a20 | 598 | const char *name) |
388975cc | 599 | { |
324a56e1 | 600 | return kernfs_find_and_get(parent, name); |
388975cc TH |
601 | } |
602 | ||
324a56e1 | 603 | static inline struct kernfs_node *sysfs_get(struct kernfs_node *kn) |
024f6471 | 604 | { |
324a56e1 TH |
605 | kernfs_get(kn); |
606 | return kn; | |
ccf73cf3 TH |
607 | } |
608 | ||
324a56e1 | 609 | static inline void sysfs_put(struct kernfs_node *kn) |
ccf73cf3 | 610 | { |
324a56e1 | 611 | kernfs_put(kn); |
024f6471 TH |
612 | } |
613 | ||
1da177e4 | 614 | #endif /* _SYSFS_H_ */ |