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. | |
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 TH |
23 | /* FIXME |
24 | * The *owner field is no longer used, but leave around | |
25 | * until the tree gets cleaned up fully. | |
26 | */ | |
1da177e4 | 27 | struct attribute { |
59f69015 TH |
28 | const char *name; |
29 | struct module *owner; | |
1da177e4 LT |
30 | mode_t mode; |
31 | }; | |
32 | ||
33 | struct attribute_group { | |
59f69015 TH |
34 | const char *name; |
35 | struct attribute **attrs; | |
1da177e4 LT |
36 | }; |
37 | ||
38 | ||
39 | ||
40 | /** | |
41 | * Use these macros to make defining attributes easier. See include/linux/device.h | |
42 | * for examples.. | |
43 | */ | |
44 | ||
45 | #define __ATTR(_name,_mode,_show,_store) { \ | |
7b595756 | 46 | .attr = {.name = __stringify(_name), .mode = _mode }, \ |
1da177e4 LT |
47 | .show = _show, \ |
48 | .store = _store, \ | |
49 | } | |
50 | ||
51 | #define __ATTR_RO(_name) { \ | |
7b595756 TH |
52 | .attr = { .name = __stringify(_name), .mode = 0444 }, \ |
53 | .show = _name##_show, \ | |
1da177e4 LT |
54 | } |
55 | ||
56 | #define __ATTR_NULL { .attr = { .name = NULL } } | |
57 | ||
58 | #define attr_name(_attr) (_attr).attr.name | |
59 | ||
60 | struct vm_area_struct; | |
61 | ||
62 | struct bin_attribute { | |
63 | struct attribute attr; | |
64 | size_t size; | |
65 | void *private; | |
91a69029 ZR |
66 | ssize_t (*read)(struct kobject *, struct bin_attribute *, |
67 | char *, loff_t, size_t); | |
68 | ssize_t (*write)(struct kobject *, struct bin_attribute *, | |
69 | char *, loff_t, size_t); | |
1da177e4 LT |
70 | int (*mmap)(struct kobject *, struct bin_attribute *attr, |
71 | struct vm_area_struct *vma); | |
72 | }; | |
73 | ||
74 | struct sysfs_ops { | |
75 | ssize_t (*show)(struct kobject *, struct attribute *,char *); | |
76 | ssize_t (*store)(struct kobject *,struct attribute *,const char *, size_t); | |
77 | }; | |
78 | ||
1da177e4 LT |
79 | #ifdef CONFIG_SYSFS |
80 | ||
59f69015 TH |
81 | int sysfs_schedule_callback(struct kobject *kobj, void (*func)(void *), |
82 | void *data, struct module *owner); | |
1da177e4 | 83 | |
59f69015 TH |
84 | int __must_check sysfs_create_dir(struct kobject *kobj); |
85 | void sysfs_remove_dir(struct kobject *kobj); | |
86 | int __must_check sysfs_rename_dir(struct kobject *kobj, const char *new_name); | |
87 | int __must_check sysfs_move_dir(struct kobject *kobj, | |
88 | struct kobject *new_parent_kobj); | |
31e5abe9 | 89 | |
59f69015 TH |
90 | int __must_check sysfs_create_file(struct kobject *kobj, |
91 | const struct attribute *attr); | |
59f69015 TH |
92 | int __must_check sysfs_chmod_file(struct kobject *kobj, struct attribute *attr, |
93 | mode_t mode); | |
94 | void sysfs_remove_file(struct kobject *kobj, const struct attribute *attr); | |
1da177e4 | 95 | |
4a7fb636 | 96 | int __must_check sysfs_create_bin_file(struct kobject *kobj, |
59f69015 | 97 | struct bin_attribute *attr); |
995982ca | 98 | void sysfs_remove_bin_file(struct kobject *kobj, struct bin_attribute *attr); |
1da177e4 | 99 | |
59f69015 TH |
100 | int __must_check sysfs_create_link(struct kobject *kobj, struct kobject *target, |
101 | const char *name); | |
102 | void sysfs_remove_link(struct kobject *kobj, const char *name); | |
103 | ||
104 | int __must_check sysfs_create_group(struct kobject *kobj, | |
105 | const struct attribute_group *grp); | |
106 | void sysfs_remove_group(struct kobject *kobj, | |
107 | const struct attribute_group *grp); | |
dfa87c82 | 108 | int sysfs_add_file_to_group(struct kobject *kobj, |
59f69015 | 109 | const struct attribute *attr, const char *group); |
dfa87c82 | 110 | void sysfs_remove_file_from_group(struct kobject *kobj, |
59f69015 | 111 | const struct attribute *attr, const char *group); |
dfa87c82 | 112 | |
59f69015 | 113 | void sysfs_notify(struct kobject *kobj, char *dir, char *attr); |
1da177e4 | 114 | |
f20a9ead AM |
115 | extern int __must_check sysfs_init(void); |
116 | ||
1da177e4 LT |
117 | #else /* CONFIG_SYSFS */ |
118 | ||
d9a9cdfb | 119 | static inline int sysfs_schedule_callback(struct kobject *kobj, |
523ded71 | 120 | void (*func)(void *), void *data, struct module *owner) |
d9a9cdfb AS |
121 | { |
122 | return -ENOSYS; | |
123 | } | |
124 | ||
59f69015 | 125 | static inline int sysfs_create_dir(struct kobject *kobj) |
1da177e4 LT |
126 | { |
127 | return 0; | |
128 | } | |
129 | ||
59f69015 | 130 | static inline void sysfs_remove_dir(struct kobject *kobj) |
1da177e4 LT |
131 | { |
132 | ; | |
133 | } | |
134 | ||
59f69015 | 135 | static inline int sysfs_rename_dir(struct kobject *kobj, const char *new_name) |
1da177e4 LT |
136 | { |
137 | return 0; | |
138 | } | |
139 | ||
59f69015 TH |
140 | static inline int sysfs_move_dir(struct kobject *kobj, |
141 | struct kobject *new_parent_kobj) | |
8a82472f CH |
142 | { |
143 | return 0; | |
144 | } | |
145 | ||
59f69015 TH |
146 | static inline int sysfs_create_file(struct kobject *kobj, |
147 | const struct attribute *attr) | |
1da177e4 LT |
148 | { |
149 | return 0; | |
150 | } | |
151 | ||
59f69015 TH |
152 | static inline int sysfs_chmod_file(struct kobject *kobj, |
153 | struct attribute *attr, mode_t mode) | |
31e5abe9 KS |
154 | { |
155 | return 0; | |
156 | } | |
1da177e4 | 157 | |
59f69015 TH |
158 | static inline void sysfs_remove_file(struct kobject *kobj, |
159 | const struct attribute *attr) | |
1da177e4 LT |
160 | { |
161 | ; | |
162 | } | |
163 | ||
59f69015 TH |
164 | static inline int sysfs_create_bin_file(struct kobject *kobj, |
165 | struct bin_attribute *attr) | |
1da177e4 LT |
166 | { |
167 | return 0; | |
168 | } | |
169 | ||
59f69015 TH |
170 | static inline int sysfs_remove_bin_file(struct kobject *kobj, |
171 | struct bin_attribute *attr) | |
1da177e4 | 172 | { |
59f69015 | 173 | return 0; |
1da177e4 LT |
174 | } |
175 | ||
59f69015 TH |
176 | static inline int sysfs_create_link(struct kobject *kobj, |
177 | struct kobject *target, const char *name) | |
1da177e4 LT |
178 | { |
179 | return 0; | |
180 | } | |
181 | ||
59f69015 | 182 | static inline void sysfs_remove_link(struct kobject *kobj, const char *name) |
1da177e4 | 183 | { |
59f69015 | 184 | ; |
1da177e4 LT |
185 | } |
186 | ||
59f69015 TH |
187 | static inline int sysfs_create_group(struct kobject *kobj, |
188 | const struct attribute_group *grp) | |
1da177e4 LT |
189 | { |
190 | return 0; | |
191 | } | |
192 | ||
59f69015 TH |
193 | static inline void sysfs_remove_group(struct kobject *kobj, |
194 | const struct attribute_group *grp) | |
1da177e4 LT |
195 | { |
196 | ; | |
197 | } | |
198 | ||
dfa87c82 AS |
199 | static inline int sysfs_add_file_to_group(struct kobject *kobj, |
200 | const struct attribute *attr, const char *group) | |
201 | { | |
202 | return 0; | |
203 | } | |
204 | ||
205 | static inline void sysfs_remove_file_from_group(struct kobject *kobj, | |
d701d8a3 | 206 | const struct attribute *attr, const char *group) |
dfa87c82 | 207 | { |
dfa87c82 AS |
208 | } |
209 | ||
59f69015 | 210 | static inline void sysfs_notify(struct kobject *kobj, char *dir, char *attr) |
4508a7a7 N |
211 | { |
212 | } | |
213 | ||
f20a9ead AM |
214 | static inline int __must_check sysfs_init(void) |
215 | { | |
216 | return 0; | |
217 | } | |
218 | ||
1da177e4 LT |
219 | #endif /* CONFIG_SYSFS */ |
220 | ||
221 | #endif /* _SYSFS_H_ */ |