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 | ||
4a7fb636 | 15 | #include <linux/compiler.h> |
5851fadc | 16 | #include <linux/errno.h> |
bf0acc33 | 17 | #include <linux/list.h> |
1da177e4 LT |
18 | #include <asm/atomic.h> |
19 | ||
20 | struct kobject; | |
21 | struct module; | |
22 | ||
7b595756 | 23 | /* FIXME |
01e8ef11 PW |
24 | * The *owner field is no longer used. |
25 | * x86 tree has been cleaned up. The owner | |
26 | * attribute is still left for other arches. | |
7b595756 | 27 | */ |
1da177e4 | 28 | struct attribute { |
59f69015 TH |
29 | const char *name; |
30 | struct module *owner; | |
1da177e4 LT |
31 | mode_t mode; |
32 | }; | |
33 | ||
34 | struct attribute_group { | |
59f69015 | 35 | const char *name; |
0f423895 | 36 | mode_t (*is_visible)(struct kobject *, |
d4acd722 | 37 | struct attribute *, int); |
59f69015 | 38 | struct attribute **attrs; |
1da177e4 LT |
39 | }; |
40 | ||
41 | ||
42 | ||
43 | /** | |
44 | * Use these macros to make defining attributes easier. See include/linux/device.h | |
45 | * for examples.. | |
46 | */ | |
47 | ||
48 | #define __ATTR(_name,_mode,_show,_store) { \ | |
7b595756 | 49 | .attr = {.name = __stringify(_name), .mode = _mode }, \ |
1da177e4 LT |
50 | .show = _show, \ |
51 | .store = _store, \ | |
52 | } | |
53 | ||
54 | #define __ATTR_RO(_name) { \ | |
7b595756 TH |
55 | .attr = { .name = __stringify(_name), .mode = 0444 }, \ |
56 | .show = _name##_show, \ | |
1da177e4 LT |
57 | } |
58 | ||
59 | #define __ATTR_NULL { .attr = { .name = NULL } } | |
60 | ||
61 | #define attr_name(_attr) (_attr).attr.name | |
62 | ||
63 | struct vm_area_struct; | |
64 | ||
65 | struct bin_attribute { | |
66 | struct attribute attr; | |
67 | size_t size; | |
68 | void *private; | |
91a69029 ZR |
69 | ssize_t (*read)(struct kobject *, struct bin_attribute *, |
70 | char *, loff_t, size_t); | |
71 | ssize_t (*write)(struct kobject *, struct bin_attribute *, | |
72 | char *, loff_t, size_t); | |
1da177e4 LT |
73 | int (*mmap)(struct kobject *, struct bin_attribute *attr, |
74 | struct vm_area_struct *vma); | |
75 | }; | |
76 | ||
77 | struct sysfs_ops { | |
78 | ssize_t (*show)(struct kobject *, struct attribute *,char *); | |
79 | ssize_t (*store)(struct kobject *,struct attribute *,const char *, size_t); | |
80 | }; | |
81 | ||
f1282c84 NB |
82 | struct sysfs_dirent; |
83 | ||
1da177e4 LT |
84 | #ifdef CONFIG_SYSFS |
85 | ||
59f69015 TH |
86 | int sysfs_schedule_callback(struct kobject *kobj, void (*func)(void *), |
87 | void *data, struct module *owner); | |
1da177e4 | 88 | |
59f69015 TH |
89 | int __must_check sysfs_create_dir(struct kobject *kobj); |
90 | void sysfs_remove_dir(struct kobject *kobj); | |
91 | int __must_check sysfs_rename_dir(struct kobject *kobj, const char *new_name); | |
92 | int __must_check sysfs_move_dir(struct kobject *kobj, | |
93 | struct kobject *new_parent_kobj); | |
31e5abe9 | 94 | |
59f69015 TH |
95 | int __must_check sysfs_create_file(struct kobject *kobj, |
96 | const struct attribute *attr); | |
59f69015 TH |
97 | int __must_check sysfs_chmod_file(struct kobject *kobj, struct attribute *attr, |
98 | mode_t mode); | |
99 | void sysfs_remove_file(struct kobject *kobj, const struct attribute *attr); | |
1da177e4 | 100 | |
4a7fb636 | 101 | int __must_check sysfs_create_bin_file(struct kobject *kobj, |
59f69015 | 102 | struct bin_attribute *attr); |
995982ca | 103 | void sysfs_remove_bin_file(struct kobject *kobj, struct bin_attribute *attr); |
1da177e4 | 104 | |
59f69015 TH |
105 | int __must_check sysfs_create_link(struct kobject *kobj, struct kobject *target, |
106 | const char *name); | |
36ce6dad CH |
107 | int __must_check sysfs_create_link_nowarn(struct kobject *kobj, |
108 | struct kobject *target, | |
109 | const char *name); | |
59f69015 TH |
110 | void sysfs_remove_link(struct kobject *kobj, const char *name); |
111 | ||
112 | int __must_check sysfs_create_group(struct kobject *kobj, | |
113 | const struct attribute_group *grp); | |
0f423895 JB |
114 | int sysfs_update_group(struct kobject *kobj, |
115 | const struct attribute_group *grp); | |
59f69015 TH |
116 | void sysfs_remove_group(struct kobject *kobj, |
117 | const struct attribute_group *grp); | |
dfa87c82 | 118 | int sysfs_add_file_to_group(struct kobject *kobj, |
59f69015 | 119 | const struct attribute *attr, const char *group); |
dfa87c82 | 120 | void sysfs_remove_file_from_group(struct kobject *kobj, |
59f69015 | 121 | const struct attribute *attr, const char *group); |
dfa87c82 | 122 | |
8c0e3998 | 123 | void sysfs_notify(struct kobject *kobj, const char *dir, const char *attr); |
f1282c84 NB |
124 | void sysfs_notify_dirent(struct sysfs_dirent *sd); |
125 | struct sysfs_dirent *sysfs_get_dirent(struct sysfs_dirent *parent_sd, | |
126 | const unsigned char *name); | |
127 | struct sysfs_dirent *sysfs_get(struct sysfs_dirent *sd); | |
128 | void sysfs_put(struct sysfs_dirent *sd); | |
ae87221d | 129 | void sysfs_printk_last_file(void); |
f1282c84 | 130 | int __must_check sysfs_init(void); |
f20a9ead | 131 | |
1da177e4 LT |
132 | #else /* CONFIG_SYSFS */ |
133 | ||
d9a9cdfb | 134 | static inline int sysfs_schedule_callback(struct kobject *kobj, |
523ded71 | 135 | void (*func)(void *), void *data, struct module *owner) |
d9a9cdfb AS |
136 | { |
137 | return -ENOSYS; | |
138 | } | |
139 | ||
59f69015 | 140 | static inline int sysfs_create_dir(struct kobject *kobj) |
1da177e4 LT |
141 | { |
142 | return 0; | |
143 | } | |
144 | ||
59f69015 | 145 | static inline void sysfs_remove_dir(struct kobject *kobj) |
1da177e4 | 146 | { |
1da177e4 LT |
147 | } |
148 | ||
59f69015 | 149 | static inline int sysfs_rename_dir(struct kobject *kobj, const char *new_name) |
1da177e4 | 150 | { |
0b4a4fea | 151 | return 0; |
1da177e4 LT |
152 | } |
153 | ||
59f69015 TH |
154 | static inline int sysfs_move_dir(struct kobject *kobj, |
155 | struct kobject *new_parent_kobj) | |
8a82472f CH |
156 | { |
157 | return 0; | |
158 | } | |
159 | ||
59f69015 TH |
160 | static inline int sysfs_create_file(struct kobject *kobj, |
161 | const struct attribute *attr) | |
1da177e4 LT |
162 | { |
163 | return 0; | |
164 | } | |
165 | ||
59f69015 TH |
166 | static inline int sysfs_chmod_file(struct kobject *kobj, |
167 | struct attribute *attr, mode_t mode) | |
31e5abe9 KS |
168 | { |
169 | return 0; | |
170 | } | |
1da177e4 | 171 | |
59f69015 TH |
172 | static inline void sysfs_remove_file(struct kobject *kobj, |
173 | const struct attribute *attr) | |
1da177e4 | 174 | { |
1da177e4 LT |
175 | } |
176 | ||
59f69015 TH |
177 | static inline int sysfs_create_bin_file(struct kobject *kobj, |
178 | struct bin_attribute *attr) | |
1da177e4 LT |
179 | { |
180 | return 0; | |
181 | } | |
182 | ||
3612e06b DR |
183 | static inline void sysfs_remove_bin_file(struct kobject *kobj, |
184 | struct bin_attribute *attr) | |
1da177e4 | 185 | { |
1da177e4 LT |
186 | } |
187 | ||
59f69015 TH |
188 | static inline int sysfs_create_link(struct kobject *kobj, |
189 | struct kobject *target, const char *name) | |
1da177e4 LT |
190 | { |
191 | return 0; | |
192 | } | |
193 | ||
36ce6dad CH |
194 | static inline int sysfs_create_link_nowarn(struct kobject *kobj, |
195 | struct kobject *target, | |
196 | const char *name) | |
197 | { | |
198 | return 0; | |
199 | } | |
200 | ||
59f69015 | 201 | static inline void sysfs_remove_link(struct kobject *kobj, const char *name) |
1da177e4 | 202 | { |
1da177e4 LT |
203 | } |
204 | ||
59f69015 TH |
205 | static inline int sysfs_create_group(struct kobject *kobj, |
206 | const struct attribute_group *grp) | |
1da177e4 LT |
207 | { |
208 | return 0; | |
209 | } | |
210 | ||
1cbfb7a5 RD |
211 | static inline int sysfs_update_group(struct kobject *kobj, |
212 | const struct attribute_group *grp) | |
213 | { | |
214 | return 0; | |
215 | } | |
216 | ||
59f69015 TH |
217 | static inline void sysfs_remove_group(struct kobject *kobj, |
218 | const struct attribute_group *grp) | |
1da177e4 | 219 | { |
1da177e4 LT |
220 | } |
221 | ||
dfa87c82 AS |
222 | static inline int sysfs_add_file_to_group(struct kobject *kobj, |
223 | const struct attribute *attr, const char *group) | |
224 | { | |
225 | return 0; | |
226 | } | |
227 | ||
228 | static inline void sysfs_remove_file_from_group(struct kobject *kobj, | |
d701d8a3 | 229 | const struct attribute *attr, const char *group) |
dfa87c82 | 230 | { |
dfa87c82 AS |
231 | } |
232 | ||
8c0e3998 TP |
233 | static inline void sysfs_notify(struct kobject *kobj, const char *dir, |
234 | const char *attr) | |
4508a7a7 N |
235 | { |
236 | } | |
f1282c84 NB |
237 | static inline void sysfs_notify_dirent(struct sysfs_dirent *sd) |
238 | { | |
239 | } | |
240 | static inline | |
241 | struct sysfs_dirent *sysfs_get_dirent(struct sysfs_dirent *parent_sd, | |
242 | const unsigned char *name) | |
243 | { | |
244 | return NULL; | |
245 | } | |
246 | static inline struct sysfs_dirent *sysfs_get(struct sysfs_dirent *sd) | |
247 | { | |
248 | return NULL; | |
249 | } | |
250 | static inline void sysfs_put(struct sysfs_dirent *sd) | |
251 | { | |
252 | } | |
4508a7a7 | 253 | |
f20a9ead AM |
254 | static inline int __must_check sysfs_init(void) |
255 | { | |
256 | return 0; | |
257 | } | |
258 | ||
ae87221d AM |
259 | static inline void sysfs_printk_last_file(void) |
260 | { | |
261 | } | |
262 | ||
1da177e4 LT |
263 | #endif /* CONFIG_SYSFS */ |
264 | ||
265 | #endif /* _SYSFS_H_ */ |