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Commit | Line | Data |
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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. | |
6 | * | |
7 | * Please see Documentation/filesystems/sysfs.txt for more information. | |
8 | */ | |
9 | ||
10 | #ifndef _SYSFS_H_ | |
11 | #define _SYSFS_H_ | |
12 | ||
4a7fb636 | 13 | #include <linux/compiler.h> |
5851fadc | 14 | #include <linux/errno.h> |
bf0acc33 | 15 | #include <linux/list.h> |
1da177e4 LT |
16 | #include <asm/atomic.h> |
17 | ||
18 | struct kobject; | |
19 | struct module; | |
20 | ||
7b595756 TH |
21 | /* FIXME |
22 | * The *owner field is no longer used, but leave around | |
23 | * until the tree gets cleaned up fully. | |
24 | */ | |
1da177e4 | 25 | struct attribute { |
d48593bf | 26 | const char * name; |
7b595756 | 27 | struct module * owner; |
1da177e4 LT |
28 | mode_t mode; |
29 | }; | |
30 | ||
31 | struct attribute_group { | |
d48593bf | 32 | const char * name; |
1da177e4 LT |
33 | struct attribute ** attrs; |
34 | }; | |
35 | ||
36 | ||
37 | ||
38 | /** | |
39 | * Use these macros to make defining attributes easier. See include/linux/device.h | |
40 | * for examples.. | |
41 | */ | |
42 | ||
43 | #define __ATTR(_name,_mode,_show,_store) { \ | |
7b595756 | 44 | .attr = {.name = __stringify(_name), .mode = _mode }, \ |
1da177e4 LT |
45 | .show = _show, \ |
46 | .store = _store, \ | |
47 | } | |
48 | ||
49 | #define __ATTR_RO(_name) { \ | |
7b595756 TH |
50 | .attr = { .name = __stringify(_name), .mode = 0444 }, \ |
51 | .show = _name##_show, \ | |
1da177e4 LT |
52 | } |
53 | ||
54 | #define __ATTR_NULL { .attr = { .name = NULL } } | |
55 | ||
56 | #define attr_name(_attr) (_attr).attr.name | |
57 | ||
58 | struct vm_area_struct; | |
59 | ||
60 | struct bin_attribute { | |
61 | struct attribute attr; | |
62 | size_t size; | |
63 | void *private; | |
91a69029 ZR |
64 | ssize_t (*read)(struct kobject *, struct bin_attribute *, |
65 | char *, loff_t, size_t); | |
66 | ssize_t (*write)(struct kobject *, struct bin_attribute *, | |
67 | char *, loff_t, size_t); | |
1da177e4 LT |
68 | int (*mmap)(struct kobject *, struct bin_attribute *attr, |
69 | struct vm_area_struct *vma); | |
70 | }; | |
71 | ||
72 | struct sysfs_ops { | |
73 | ssize_t (*show)(struct kobject *, struct attribute *,char *); | |
74 | ssize_t (*store)(struct kobject *,struct attribute *,const char *, size_t); | |
75 | }; | |
76 | ||
b402d72c | 77 | #define SYSFS_TYPE_MASK 0x00ff |
1da177e4 LT |
78 | #define SYSFS_ROOT 0x0001 |
79 | #define SYSFS_DIR 0x0002 | |
80 | #define SYSFS_KOBJ_ATTR 0x0004 | |
81 | #define SYSFS_KOBJ_BIN_ATTR 0x0008 | |
82 | #define SYSFS_KOBJ_LINK 0x0020 | |
0c096b50 | 83 | #define SYSFS_COPY_NAME (SYSFS_DIR | SYSFS_KOBJ_LINK) |
1da177e4 | 84 | |
b402d72c | 85 | #define SYSFS_FLAG_MASK ~SYSFS_TYPE_MASK |
380e6fbb | 86 | #define SYSFS_FLAG_REMOVED 0x0100 |
b402d72c | 87 | |
1da177e4 LT |
88 | #ifdef CONFIG_SYSFS |
89 | ||
d9a9cdfb | 90 | extern int sysfs_schedule_callback(struct kobject *kobj, |
523ded71 | 91 | void (*func)(void *), void *data, struct module *owner); |
d9a9cdfb | 92 | |
4a7fb636 | 93 | extern int __must_check |
90bc6135 | 94 | sysfs_create_dir(struct kobject *); |
1da177e4 LT |
95 | |
96 | extern void | |
97 | sysfs_remove_dir(struct kobject *); | |
98 | ||
4a7fb636 | 99 | extern int __must_check |
90bc6135 | 100 | sysfs_rename_dir(struct kobject *kobj, const char *new_name); |
1da177e4 | 101 | |
8a82472f CH |
102 | extern int __must_check |
103 | sysfs_move_dir(struct kobject *, struct kobject *); | |
104 | ||
4a7fb636 | 105 | extern int __must_check |
1da177e4 LT |
106 | sysfs_create_file(struct kobject *, const struct attribute *); |
107 | ||
4a7fb636 | 108 | extern int __must_check |
1da177e4 LT |
109 | sysfs_update_file(struct kobject *, const struct attribute *); |
110 | ||
4a7fb636 | 111 | extern int __must_check |
31e5abe9 KS |
112 | sysfs_chmod_file(struct kobject *kobj, struct attribute *attr, mode_t mode); |
113 | ||
1da177e4 LT |
114 | extern void |
115 | sysfs_remove_file(struct kobject *, const struct attribute *); | |
116 | ||
4a7fb636 | 117 | extern int __must_check |
e3a15db2 | 118 | sysfs_create_link(struct kobject * kobj, struct kobject * target, const char * name); |
1da177e4 LT |
119 | |
120 | extern void | |
e3a15db2 | 121 | sysfs_remove_link(struct kobject *, const char * name); |
1da177e4 | 122 | |
4a7fb636 AM |
123 | int __must_check sysfs_create_bin_file(struct kobject *kobj, |
124 | struct bin_attribute *attr); | |
995982ca | 125 | void sysfs_remove_bin_file(struct kobject *kobj, struct bin_attribute *attr); |
1da177e4 | 126 | |
4a7fb636 AM |
127 | int __must_check sysfs_create_group(struct kobject *, |
128 | const struct attribute_group *); | |
1da177e4 | 129 | void sysfs_remove_group(struct kobject *, const struct attribute_group *); |
dfa87c82 AS |
130 | int sysfs_add_file_to_group(struct kobject *kobj, |
131 | const struct attribute *attr, const char *group); | |
132 | void sysfs_remove_file_from_group(struct kobject *kobj, | |
133 | const struct attribute *attr, const char *group); | |
134 | ||
4508a7a7 | 135 | void sysfs_notify(struct kobject * k, char *dir, char *attr); |
1da177e4 | 136 | |
f20a9ead AM |
137 | extern int __must_check sysfs_init(void); |
138 | ||
1da177e4 LT |
139 | #else /* CONFIG_SYSFS */ |
140 | ||
d9a9cdfb | 141 | static inline int sysfs_schedule_callback(struct kobject *kobj, |
523ded71 | 142 | void (*func)(void *), void *data, struct module *owner) |
d9a9cdfb AS |
143 | { |
144 | return -ENOSYS; | |
145 | } | |
146 | ||
90bc6135 | 147 | static inline int sysfs_create_dir(struct kobject * kobj) |
1da177e4 LT |
148 | { |
149 | return 0; | |
150 | } | |
151 | ||
152 | static inline void sysfs_remove_dir(struct kobject * k) | |
153 | { | |
154 | ; | |
155 | } | |
156 | ||
90bc6135 | 157 | static inline int sysfs_rename_dir(struct kobject * kobj, const char *new_name) |
1da177e4 LT |
158 | { |
159 | return 0; | |
160 | } | |
161 | ||
8a82472f CH |
162 | static inline int sysfs_move_dir(struct kobject * k, struct kobject * new_parent) |
163 | { | |
164 | return 0; | |
165 | } | |
166 | ||
1da177e4 LT |
167 | static inline int sysfs_create_file(struct kobject * k, const struct attribute * a) |
168 | { | |
169 | return 0; | |
170 | } | |
171 | ||
172 | static inline int sysfs_update_file(struct kobject * k, const struct attribute * a) | |
173 | { | |
174 | return 0; | |
175 | } | |
31e5abe9 KS |
176 | static inline int sysfs_chmod_file(struct kobject *kobj, struct attribute *attr, mode_t mode) |
177 | { | |
178 | return 0; | |
179 | } | |
1da177e4 LT |
180 | |
181 | static inline void sysfs_remove_file(struct kobject * k, const struct attribute * a) | |
182 | { | |
183 | ; | |
184 | } | |
185 | ||
e3a15db2 | 186 | static inline int sysfs_create_link(struct kobject * k, struct kobject * t, const char * n) |
1da177e4 LT |
187 | { |
188 | return 0; | |
189 | } | |
190 | ||
e3a15db2 | 191 | static inline void sysfs_remove_link(struct kobject * k, const char * name) |
1da177e4 LT |
192 | { |
193 | ; | |
194 | } | |
195 | ||
196 | ||
197 | static inline int sysfs_create_bin_file(struct kobject * k, struct bin_attribute * a) | |
198 | { | |
199 | return 0; | |
200 | } | |
201 | ||
202 | static inline int sysfs_remove_bin_file(struct kobject * k, struct bin_attribute * a) | |
203 | { | |
204 | return 0; | |
205 | } | |
206 | ||
207 | static inline int sysfs_create_group(struct kobject * k, const struct attribute_group *g) | |
208 | { | |
209 | return 0; | |
210 | } | |
211 | ||
212 | static inline void sysfs_remove_group(struct kobject * k, const struct attribute_group * g) | |
213 | { | |
214 | ; | |
215 | } | |
216 | ||
dfa87c82 AS |
217 | static inline int sysfs_add_file_to_group(struct kobject *kobj, |
218 | const struct attribute *attr, const char *group) | |
219 | { | |
220 | return 0; | |
221 | } | |
222 | ||
223 | static inline void sysfs_remove_file_from_group(struct kobject *kobj, | |
d701d8a3 | 224 | const struct attribute *attr, const char *group) |
dfa87c82 | 225 | { |
dfa87c82 AS |
226 | } |
227 | ||
4508a7a7 N |
228 | static inline void sysfs_notify(struct kobject * k, char *dir, char *attr) |
229 | { | |
230 | } | |
231 | ||
f20a9ead AM |
232 | static inline int __must_check sysfs_init(void) |
233 | { | |
234 | return 0; | |
235 | } | |
236 | ||
1da177e4 LT |
237 | #endif /* CONFIG_SYSFS */ |
238 | ||
239 | #endif /* _SYSFS_H_ */ |