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Commit | Line | Data |
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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 | 9 | * |
0c1bc6b8 | 10 | * Please see Documentation/filesystems/sysfs.rst for more information. |
1da177e4 LT |
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 | ||
3022c6a1 DW |
126 | #define __ATTR_RW_MODE(_name, _mode) { \ |
127 | .attr = { .name = __stringify(_name), \ | |
128 | .mode = VERIFY_OCTAL_PERMISSIONS(_mode) }, \ | |
129 | .show = _name##_show, \ | |
130 | .store = _name##_store, \ | |
131 | } | |
132 | ||
a65fcce7 | 133 | #define __ATTR_WO(_name) { \ |
353c6dda | 134 | .attr = { .name = __stringify(_name), .mode = 0200 }, \ |
a65fcce7 GKH |
135 | .store = _name##_store, \ |
136 | } | |
137 | ||
353c6dda | 138 | #define __ATTR_RW(_name) __ATTR(_name, 0644, _name##_show, _name##_store) |
b9b32597 | 139 | |
1da177e4 | 140 | #define __ATTR_NULL { .attr = { .name = NULL } } |
356c05d5 AS |
141 | |
142 | #ifdef CONFIG_DEBUG_LOCK_ALLOC | |
143 | #define __ATTR_IGNORE_LOCKDEP(_name, _mode, _show, _store) { \ | |
144 | .attr = {.name = __stringify(_name), .mode = _mode, \ | |
145 | .ignore_lockdep = true }, \ | |
146 | .show = _show, \ | |
147 | .store = _store, \ | |
148 | } | |
149 | #else | |
150 | #define __ATTR_IGNORE_LOCKDEP __ATTR | |
151 | #endif | |
1da177e4 | 152 | |
3493f69f OS |
153 | #define __ATTRIBUTE_GROUPS(_name) \ |
154 | static const struct attribute_group *_name##_groups[] = { \ | |
155 | &_name##_group, \ | |
f2f37f58 GKH |
156 | NULL, \ |
157 | } | |
158 | ||
3493f69f OS |
159 | #define ATTRIBUTE_GROUPS(_name) \ |
160 | static const struct attribute_group _name##_group = { \ | |
161 | .attrs = _name##_attrs, \ | |
162 | }; \ | |
163 | __ATTRIBUTE_GROUPS(_name) | |
164 | ||
2c3c8bea | 165 | struct file; |
1da177e4 | 166 | struct vm_area_struct; |
74b30195 | 167 | struct address_space; |
1da177e4 LT |
168 | |
169 | struct bin_attribute { | |
170 | struct attribute attr; | |
171 | size_t size; | |
172 | void *private; | |
74b30195 | 173 | struct address_space *mapping; |
2c3c8bea | 174 | ssize_t (*read)(struct file *, struct kobject *, struct bin_attribute *, |
91a69029 | 175 | char *, loff_t, size_t); |
5da5c9c8 | 176 | ssize_t (*write)(struct file *, struct kobject *, struct bin_attribute *, |
91a69029 | 177 | char *, loff_t, size_t); |
2c3c8bea | 178 | int (*mmap)(struct file *, struct kobject *, struct bin_attribute *attr, |
1da177e4 LT |
179 | struct vm_area_struct *vma); |
180 | }; | |
181 | ||
35960258 EB |
182 | /** |
183 | * sysfs_bin_attr_init - initialize a dynamically allocated bin_attribute | |
184 | * @attr: struct bin_attribute to initialize | |
185 | * | |
186 | * Initialize a dynamically allocated struct bin_attribute so we | |
187 | * can make lockdep happy. This is a new requirement for | |
188 | * attributes and initially this is only needed when lockdep is | |
189 | * enabled. Lockdep gives a nice error when your attribute is | |
190 | * added to sysfs if you don't have this. | |
191 | */ | |
62e877b8 | 192 | #define sysfs_bin_attr_init(bin_attr) sysfs_attr_init(&(bin_attr)->attr) |
6992f533 | 193 | |
3493f69f OS |
194 | /* macros to create static binary attributes easier */ |
195 | #define __BIN_ATTR(_name, _mode, _read, _write, _size) { \ | |
196 | .attr = { .name = __stringify(_name), .mode = _mode }, \ | |
197 | .read = _read, \ | |
198 | .write = _write, \ | |
199 | .size = _size, \ | |
200 | } | |
201 | ||
202 | #define __BIN_ATTR_RO(_name, _size) { \ | |
353c6dda | 203 | .attr = { .name = __stringify(_name), .mode = 0444 }, \ |
3493f69f OS |
204 | .read = _name##_read, \ |
205 | .size = _size, \ | |
e4b63603 GKH |
206 | } |
207 | ||
82af5b66 | 208 | #define __BIN_ATTR_WO(_name, _size) { \ |
7f905761 | 209 | .attr = { .name = __stringify(_name), .mode = 0200 }, \ |
82af5b66 | 210 | .write = _name##_write, \ |
7f905761 GKH |
211 | .size = _size, \ |
212 | } | |
213 | ||
353c6dda JP |
214 | #define __BIN_ATTR_RW(_name, _size) \ |
215 | __BIN_ATTR(_name, 0644, _name##_read, _name##_write, _size) | |
3493f69f OS |
216 | |
217 | #define __BIN_ATTR_NULL __ATTR_NULL | |
218 | ||
219 | #define BIN_ATTR(_name, _mode, _read, _write, _size) \ | |
220 | struct bin_attribute bin_attr_##_name = __BIN_ATTR(_name, _mode, _read, \ | |
221 | _write, _size) | |
222 | ||
223 | #define BIN_ATTR_RO(_name, _size) \ | |
224 | struct bin_attribute bin_attr_##_name = __BIN_ATTR_RO(_name, _size) | |
225 | ||
7f905761 GKH |
226 | #define BIN_ATTR_WO(_name, _size) \ |
227 | struct bin_attribute bin_attr_##_name = __BIN_ATTR_WO(_name, _size) | |
228 | ||
3493f69f OS |
229 | #define BIN_ATTR_RW(_name, _size) \ |
230 | struct bin_attribute bin_attr_##_name = __BIN_ATTR_RW(_name, _size) | |
231 | ||
1da177e4 | 232 | struct sysfs_ops { |
5da5c9c8 GKH |
233 | ssize_t (*show)(struct kobject *, struct attribute *, char *); |
234 | ssize_t (*store)(struct kobject *, struct attribute *, const char *, size_t); | |
1da177e4 LT |
235 | }; |
236 | ||
1da177e4 LT |
237 | #ifdef CONFIG_SYSFS |
238 | ||
e34ff490 | 239 | int __must_check sysfs_create_dir_ns(struct kobject *kobj, const void *ns); |
59f69015 | 240 | void sysfs_remove_dir(struct kobject *kobj); |
e34ff490 TH |
241 | int __must_check sysfs_rename_dir_ns(struct kobject *kobj, const char *new_name, |
242 | const void *new_ns); | |
243 | int __must_check sysfs_move_dir_ns(struct kobject *kobj, | |
244 | struct kobject *new_parent_kobj, | |
245 | const void *new_ns); | |
87d2846f EB |
246 | int __must_check sysfs_create_mount_point(struct kobject *parent_kobj, |
247 | const char *name); | |
248 | void sysfs_remove_mount_point(struct kobject *parent_kobj, | |
249 | const char *name); | |
31e5abe9 | 250 | |
58292cbe TH |
251 | int __must_check sysfs_create_file_ns(struct kobject *kobj, |
252 | const struct attribute *attr, | |
253 | const void *ns); | |
1c205ae1 | 254 | int __must_check sysfs_create_files(struct kobject *kobj, |
9ee4685c | 255 | const struct attribute * const *attr); |
49c19400 | 256 | int __must_check sysfs_chmod_file(struct kobject *kobj, |
48176a97 | 257 | const struct attribute *attr, umode_t mode); |
2afc9166 BVA |
258 | struct kernfs_node *sysfs_break_active_protection(struct kobject *kobj, |
259 | const struct attribute *attr); | |
260 | void sysfs_unbreak_active_protection(struct kernfs_node *kn); | |
58292cbe TH |
261 | void sysfs_remove_file_ns(struct kobject *kobj, const struct attribute *attr, |
262 | const void *ns); | |
6b0afc2a | 263 | bool sysfs_remove_file_self(struct kobject *kobj, const struct attribute *attr); |
9ee4685c | 264 | void sysfs_remove_files(struct kobject *kobj, const struct attribute * const *attr); |
1da177e4 | 265 | |
4a7fb636 | 266 | int __must_check sysfs_create_bin_file(struct kobject *kobj, |
66ecb92b PC |
267 | const struct bin_attribute *attr); |
268 | void sysfs_remove_bin_file(struct kobject *kobj, | |
269 | const struct bin_attribute *attr); | |
1da177e4 | 270 | |
59f69015 TH |
271 | int __must_check sysfs_create_link(struct kobject *kobj, struct kobject *target, |
272 | const char *name); | |
36ce6dad CH |
273 | int __must_check sysfs_create_link_nowarn(struct kobject *kobj, |
274 | struct kobject *target, | |
275 | const char *name); | |
59f69015 TH |
276 | void sysfs_remove_link(struct kobject *kobj, const char *name); |
277 | ||
4b30ee58 TH |
278 | int sysfs_rename_link_ns(struct kobject *kobj, struct kobject *target, |
279 | const char *old_name, const char *new_name, | |
280 | const void *new_ns); | |
7cb32942 | 281 | |
746edb7a EB |
282 | void sysfs_delete_link(struct kobject *dir, struct kobject *targ, |
283 | const char *name); | |
284 | ||
59f69015 TH |
285 | int __must_check sysfs_create_group(struct kobject *kobj, |
286 | const struct attribute_group *grp); | |
3e9b2bae GKH |
287 | int __must_check sysfs_create_groups(struct kobject *kobj, |
288 | const struct attribute_group **groups); | |
aac1f7f9 JO |
289 | int __must_check sysfs_update_groups(struct kobject *kobj, |
290 | const struct attribute_group **groups); | |
0f423895 JB |
291 | int sysfs_update_group(struct kobject *kobj, |
292 | const struct attribute_group *grp); | |
59f69015 TH |
293 | void sysfs_remove_group(struct kobject *kobj, |
294 | const struct attribute_group *grp); | |
3e9b2bae GKH |
295 | void sysfs_remove_groups(struct kobject *kobj, |
296 | const struct attribute_group **groups); | |
dfa87c82 | 297 | int sysfs_add_file_to_group(struct kobject *kobj, |
59f69015 | 298 | const struct attribute *attr, const char *group); |
dfa87c82 | 299 | void sysfs_remove_file_from_group(struct kobject *kobj, |
59f69015 | 300 | const struct attribute *attr, const char *group); |
69d44ffb AS |
301 | int sysfs_merge_group(struct kobject *kobj, |
302 | const struct attribute_group *grp); | |
303 | void sysfs_unmerge_group(struct kobject *kobj, | |
304 | const struct attribute_group *grp); | |
0bb8f3d6 RW |
305 | int sysfs_add_link_to_group(struct kobject *kobj, const char *group_name, |
306 | struct kobject *target, const char *link_name); | |
307 | void sysfs_remove_link_from_group(struct kobject *kobj, const char *group_name, | |
308 | const char *link_name); | |
9255782f SJ |
309 | int compat_only_sysfs_link_entry_to_kobj(struct kobject *kobj, |
310 | struct kobject *target_kobj, | |
311 | const char *target_name, | |
312 | const char *symlink_name); | |
dfa87c82 | 313 | |
8c0e3998 | 314 | void sysfs_notify(struct kobject *kobj, const char *dir, const char *attr); |
3ff195b0 | 315 | |
f1282c84 | 316 | int __must_check sysfs_init(void); |
f20a9ead | 317 | |
fa4cd451 TH |
318 | static inline void sysfs_enable_ns(struct kernfs_node *kn) |
319 | { | |
320 | return kernfs_enable_ns(kn); | |
321 | } | |
322 | ||
f70ce185 CB |
323 | int sysfs_file_change_owner(struct kobject *kobj, const char *name, kuid_t kuid, |
324 | kgid_t kgid); | |
2c4f9401 | 325 | int sysfs_change_owner(struct kobject *kobj, kuid_t kuid, kgid_t kgid); |
0666a3ae CB |
326 | int sysfs_link_change_owner(struct kobject *kobj, struct kobject *targ, |
327 | const char *name, kuid_t kuid, kgid_t kgid); | |
303a4276 CB |
328 | int sysfs_groups_change_owner(struct kobject *kobj, |
329 | const struct attribute_group **groups, | |
330 | kuid_t kuid, kgid_t kgid); | |
331 | int sysfs_group_change_owner(struct kobject *kobj, | |
332 | const struct attribute_group *groups, kuid_t kuid, | |
333 | kgid_t kgid); | |
2efc459d JP |
334 | __printf(2, 3) |
335 | int sysfs_emit(char *buf, const char *fmt, ...); | |
336 | __printf(3, 4) | |
337 | int sysfs_emit_at(char *buf, int at, const char *fmt, ...); | |
f70ce185 | 338 | |
1da177e4 LT |
339 | #else /* CONFIG_SYSFS */ |
340 | ||
e34ff490 | 341 | static inline int sysfs_create_dir_ns(struct kobject *kobj, const void *ns) |
1da177e4 LT |
342 | { |
343 | return 0; | |
344 | } | |
345 | ||
59f69015 | 346 | static inline void sysfs_remove_dir(struct kobject *kobj) |
1da177e4 | 347 | { |
1da177e4 LT |
348 | } |
349 | ||
e34ff490 TH |
350 | static inline int sysfs_rename_dir_ns(struct kobject *kobj, |
351 | const char *new_name, const void *new_ns) | |
1da177e4 | 352 | { |
0b4a4fea | 353 | return 0; |
1da177e4 LT |
354 | } |
355 | ||
e34ff490 TH |
356 | static inline int sysfs_move_dir_ns(struct kobject *kobj, |
357 | struct kobject *new_parent_kobj, | |
358 | const void *new_ns) | |
8a82472f CH |
359 | { |
360 | return 0; | |
361 | } | |
362 | ||
87d2846f EB |
363 | static inline int sysfs_create_mount_point(struct kobject *parent_kobj, |
364 | const char *name) | |
365 | { | |
366 | return 0; | |
367 | } | |
368 | ||
369 | static inline void sysfs_remove_mount_point(struct kobject *parent_kobj, | |
370 | const char *name) | |
371 | { | |
372 | } | |
373 | ||
58292cbe TH |
374 | static inline int sysfs_create_file_ns(struct kobject *kobj, |
375 | const struct attribute *attr, | |
376 | const void *ns) | |
1da177e4 LT |
377 | { |
378 | return 0; | |
379 | } | |
380 | ||
1c205ae1 | 381 | static inline int sysfs_create_files(struct kobject *kobj, |
9ee4685c | 382 | const struct attribute * const *attr) |
1c205ae1 AK |
383 | { |
384 | return 0; | |
385 | } | |
386 | ||
59f69015 | 387 | static inline int sysfs_chmod_file(struct kobject *kobj, |
48176a97 | 388 | const struct attribute *attr, umode_t mode) |
31e5abe9 KS |
389 | { |
390 | return 0; | |
391 | } | |
1da177e4 | 392 | |
2afc9166 BVA |
393 | static inline struct kernfs_node * |
394 | sysfs_break_active_protection(struct kobject *kobj, | |
395 | const struct attribute *attr) | |
396 | { | |
397 | return NULL; | |
398 | } | |
399 | ||
400 | static inline void sysfs_unbreak_active_protection(struct kernfs_node *kn) | |
401 | { | |
402 | } | |
403 | ||
58292cbe TH |
404 | static inline void sysfs_remove_file_ns(struct kobject *kobj, |
405 | const struct attribute *attr, | |
406 | const void *ns) | |
1da177e4 | 407 | { |
1da177e4 LT |
408 | } |
409 | ||
6b0afc2a TH |
410 | static inline bool sysfs_remove_file_self(struct kobject *kobj, |
411 | const struct attribute *attr) | |
412 | { | |
413 | return false; | |
414 | } | |
415 | ||
1c205ae1 | 416 | static inline void sysfs_remove_files(struct kobject *kobj, |
9ee4685c | 417 | const struct attribute * const *attr) |
1c205ae1 AK |
418 | { |
419 | } | |
420 | ||
59f69015 | 421 | static inline int sysfs_create_bin_file(struct kobject *kobj, |
66ecb92b | 422 | const struct bin_attribute *attr) |
1da177e4 LT |
423 | { |
424 | return 0; | |
425 | } | |
426 | ||
3612e06b | 427 | static inline void sysfs_remove_bin_file(struct kobject *kobj, |
66ecb92b | 428 | const struct bin_attribute *attr) |
1da177e4 | 429 | { |
1da177e4 LT |
430 | } |
431 | ||
59f69015 TH |
432 | static inline int sysfs_create_link(struct kobject *kobj, |
433 | struct kobject *target, const char *name) | |
1da177e4 LT |
434 | { |
435 | return 0; | |
436 | } | |
437 | ||
36ce6dad CH |
438 | static inline int sysfs_create_link_nowarn(struct kobject *kobj, |
439 | struct kobject *target, | |
440 | const char *name) | |
441 | { | |
442 | return 0; | |
443 | } | |
444 | ||
59f69015 | 445 | static inline void sysfs_remove_link(struct kobject *kobj, const char *name) |
1da177e4 | 446 | { |
1da177e4 LT |
447 | } |
448 | ||
4b30ee58 TH |
449 | static inline int sysfs_rename_link_ns(struct kobject *k, struct kobject *t, |
450 | const char *old_name, | |
451 | const char *new_name, const void *ns) | |
7cb32942 EB |
452 | { |
453 | return 0; | |
454 | } | |
455 | ||
746edb7a EB |
456 | static inline void sysfs_delete_link(struct kobject *k, struct kobject *t, |
457 | const char *name) | |
458 | { | |
459 | } | |
460 | ||
59f69015 TH |
461 | static inline int sysfs_create_group(struct kobject *kobj, |
462 | const struct attribute_group *grp) | |
1da177e4 LT |
463 | { |
464 | return 0; | |
465 | } | |
466 | ||
f7998780 GKH |
467 | static inline int sysfs_create_groups(struct kobject *kobj, |
468 | const struct attribute_group **groups) | |
469 | { | |
574979c6 | 470 | return 0; |
f7998780 GKH |
471 | } |
472 | ||
aac1f7f9 JO |
473 | static inline int sysfs_update_groups(struct kobject *kobj, |
474 | const struct attribute_group **groups) | |
475 | { | |
476 | return 0; | |
477 | } | |
478 | ||
1cbfb7a5 RD |
479 | static inline int sysfs_update_group(struct kobject *kobj, |
480 | const struct attribute_group *grp) | |
481 | { | |
482 | return 0; | |
483 | } | |
484 | ||
59f69015 TH |
485 | static inline void sysfs_remove_group(struct kobject *kobj, |
486 | const struct attribute_group *grp) | |
1da177e4 | 487 | { |
1da177e4 LT |
488 | } |
489 | ||
f7998780 GKH |
490 | static inline void sysfs_remove_groups(struct kobject *kobj, |
491 | const struct attribute_group **groups) | |
492 | { | |
493 | } | |
494 | ||
dfa87c82 AS |
495 | static inline int sysfs_add_file_to_group(struct kobject *kobj, |
496 | const struct attribute *attr, const char *group) | |
497 | { | |
498 | return 0; | |
499 | } | |
500 | ||
501 | static inline void sysfs_remove_file_from_group(struct kobject *kobj, | |
d701d8a3 | 502 | const struct attribute *attr, const char *group) |
dfa87c82 | 503 | { |
dfa87c82 AS |
504 | } |
505 | ||
69d44ffb AS |
506 | static inline int sysfs_merge_group(struct kobject *kobj, |
507 | const struct attribute_group *grp) | |
508 | { | |
509 | return 0; | |
510 | } | |
511 | ||
512 | static inline void sysfs_unmerge_group(struct kobject *kobj, | |
513 | const struct attribute_group *grp) | |
514 | { | |
515 | } | |
516 | ||
0bb8f3d6 RW |
517 | static inline int sysfs_add_link_to_group(struct kobject *kobj, |
518 | const char *group_name, struct kobject *target, | |
519 | const char *link_name) | |
520 | { | |
521 | return 0; | |
522 | } | |
523 | ||
524 | static inline void sysfs_remove_link_from_group(struct kobject *kobj, | |
525 | const char *group_name, const char *link_name) | |
526 | { | |
527 | } | |
528 | ||
9255782f SJ |
529 | static inline int compat_only_sysfs_link_entry_to_kobj(struct kobject *kobj, |
530 | struct kobject *target_kobj, | |
531 | const char *target_name, | |
532 | const char *symlink_name) | |
533 | { | |
534 | return 0; | |
535 | } | |
536 | ||
8c0e3998 TP |
537 | static inline void sysfs_notify(struct kobject *kobj, const char *dir, |
538 | const char *attr) | |
4508a7a7 N |
539 | { |
540 | } | |
541 | ||
f20a9ead AM |
542 | static inline int __must_check sysfs_init(void) |
543 | { | |
544 | return 0; | |
545 | } | |
546 | ||
fa4cd451 TH |
547 | static inline void sysfs_enable_ns(struct kernfs_node *kn) |
548 | { | |
549 | } | |
550 | ||
f70ce185 CB |
551 | static inline int sysfs_file_change_owner(struct kobject *kobj, |
552 | const char *name, kuid_t kuid, | |
0666a3ae CB |
553 | kgid_t kgid) |
554 | { | |
555 | return 0; | |
556 | } | |
557 | ||
558 | static inline int sysfs_link_change_owner(struct kobject *kobj, | |
559 | struct kobject *targ, | |
560 | const char *name, kuid_t kuid, | |
f70ce185 CB |
561 | kgid_t kgid) |
562 | { | |
563 | return 0; | |
564 | } | |
565 | ||
2c4f9401 CB |
566 | static inline int sysfs_change_owner(struct kobject *kobj, kuid_t kuid, kgid_t kgid) |
567 | { | |
568 | return 0; | |
569 | } | |
570 | ||
303a4276 CB |
571 | static inline int sysfs_groups_change_owner(struct kobject *kobj, |
572 | const struct attribute_group **groups, | |
573 | kuid_t kuid, kgid_t kgid) | |
574 | { | |
575 | return 0; | |
576 | } | |
577 | ||
578 | static inline int sysfs_group_change_owner(struct kobject *kobj, | |
8511d72f CB |
579 | const struct attribute_group *groups, |
580 | kuid_t kuid, kgid_t kgid) | |
303a4276 CB |
581 | { |
582 | return 0; | |
583 | } | |
584 | ||
2efc459d JP |
585 | __printf(2, 3) |
586 | static inline int sysfs_emit(char *buf, const char *fmt, ...) | |
587 | { | |
588 | return 0; | |
589 | } | |
590 | ||
591 | __printf(3, 4) | |
592 | static inline int sysfs_emit_at(char *buf, int at, const char *fmt, ...) | |
593 | { | |
594 | return 0; | |
595 | } | |
1da177e4 LT |
596 | #endif /* CONFIG_SYSFS */ |
597 | ||
58292cbe TH |
598 | static inline int __must_check sysfs_create_file(struct kobject *kobj, |
599 | const struct attribute *attr) | |
600 | { | |
601 | return sysfs_create_file_ns(kobj, attr, NULL); | |
602 | } | |
603 | ||
604 | static inline void sysfs_remove_file(struct kobject *kobj, | |
605 | const struct attribute *attr) | |
606 | { | |
78e1da62 | 607 | sysfs_remove_file_ns(kobj, attr, NULL); |
58292cbe TH |
608 | } |
609 | ||
4b30ee58 TH |
610 | static inline int sysfs_rename_link(struct kobject *kobj, struct kobject *target, |
611 | const char *old_name, const char *new_name) | |
612 | { | |
613 | return sysfs_rename_link_ns(kobj, target, old_name, new_name, NULL); | |
614 | } | |
615 | ||
324a56e1 | 616 | static inline void sysfs_notify_dirent(struct kernfs_node *kn) |
ccf73cf3 | 617 | { |
324a56e1 | 618 | kernfs_notify(kn); |
ccf73cf3 TH |
619 | } |
620 | ||
324a56e1 | 621 | static inline struct kernfs_node *sysfs_get_dirent(struct kernfs_node *parent, |
89cf2a20 | 622 | const char *name) |
388975cc | 623 | { |
324a56e1 | 624 | return kernfs_find_and_get(parent, name); |
388975cc TH |
625 | } |
626 | ||
324a56e1 | 627 | static inline struct kernfs_node *sysfs_get(struct kernfs_node *kn) |
024f6471 | 628 | { |
324a56e1 TH |
629 | kernfs_get(kn); |
630 | return kn; | |
ccf73cf3 TH |
631 | } |
632 | ||
324a56e1 | 633 | static inline void sysfs_put(struct kernfs_node *kn) |
ccf73cf3 | 634 | { |
324a56e1 | 635 | kernfs_put(kn); |
024f6471 TH |
636 | } |
637 | ||
1da177e4 | 638 | #endif /* _SYSFS_H_ */ |