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. | |
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; | |
b592fcfe | 20 | struct nameidata; |
d56c3eae | 21 | struct dentry; |
1da177e4 | 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 { |
d48593bf | 28 | const char * name; |
7b595756 | 29 | struct module * owner; |
1da177e4 LT |
30 | mode_t mode; |
31 | }; | |
32 | ||
33 | struct attribute_group { | |
d48593bf | 34 | const char * name; |
1da177e4 LT |
35 | struct attribute ** attrs; |
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; | |
66 | ssize_t (*read)(struct kobject *, char *, loff_t, size_t); | |
67 | ssize_t (*write)(struct kobject *, char *, loff_t, size_t); | |
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 | ||
1da177e4 LT |
77 | #define SYSFS_ROOT 0x0001 |
78 | #define SYSFS_DIR 0x0002 | |
79 | #define SYSFS_KOBJ_ATTR 0x0004 | |
80 | #define SYSFS_KOBJ_BIN_ATTR 0x0008 | |
81 | #define SYSFS_KOBJ_LINK 0x0020 | |
82 | #define SYSFS_NOT_PINNED (SYSFS_KOBJ_ATTR | SYSFS_KOBJ_BIN_ATTR | SYSFS_KOBJ_LINK) | |
0c096b50 | 83 | #define SYSFS_COPY_NAME (SYSFS_DIR | SYSFS_KOBJ_LINK) |
1da177e4 LT |
84 | |
85 | #ifdef CONFIG_SYSFS | |
86 | ||
d9a9cdfb | 87 | extern int sysfs_schedule_callback(struct kobject *kobj, |
523ded71 | 88 | void (*func)(void *), void *data, struct module *owner); |
d9a9cdfb | 89 | |
4a7fb636 | 90 | extern int __must_check |
b592fcfe | 91 | sysfs_create_dir(struct kobject *, struct dentry *); |
1da177e4 LT |
92 | |
93 | extern void | |
94 | sysfs_remove_dir(struct kobject *); | |
95 | ||
4a7fb636 | 96 | extern int __must_check |
b592fcfe | 97 | sysfs_rename_dir(struct kobject *, struct dentry *, const char *new_name); |
1da177e4 | 98 | |
8a82472f CH |
99 | extern int __must_check |
100 | sysfs_move_dir(struct kobject *, struct kobject *); | |
101 | ||
4a7fb636 | 102 | extern int __must_check |
1da177e4 LT |
103 | sysfs_create_file(struct kobject *, const struct attribute *); |
104 | ||
4a7fb636 | 105 | extern int __must_check |
1da177e4 LT |
106 | sysfs_update_file(struct kobject *, const struct attribute *); |
107 | ||
4a7fb636 | 108 | extern int __must_check |
31e5abe9 KS |
109 | sysfs_chmod_file(struct kobject *kobj, struct attribute *attr, mode_t mode); |
110 | ||
1da177e4 LT |
111 | extern void |
112 | sysfs_remove_file(struct kobject *, const struct attribute *); | |
113 | ||
4a7fb636 | 114 | extern int __must_check |
e3a15db2 | 115 | sysfs_create_link(struct kobject * kobj, struct kobject * target, const char * name); |
1da177e4 LT |
116 | |
117 | extern void | |
e3a15db2 | 118 | sysfs_remove_link(struct kobject *, const char * name); |
1da177e4 | 119 | |
4a7fb636 AM |
120 | int __must_check sysfs_create_bin_file(struct kobject *kobj, |
121 | struct bin_attribute *attr); | |
995982ca | 122 | void sysfs_remove_bin_file(struct kobject *kobj, struct bin_attribute *attr); |
1da177e4 | 123 | |
4a7fb636 AM |
124 | int __must_check sysfs_create_group(struct kobject *, |
125 | const struct attribute_group *); | |
1da177e4 | 126 | void sysfs_remove_group(struct kobject *, const struct attribute_group *); |
dfa87c82 AS |
127 | int sysfs_add_file_to_group(struct kobject *kobj, |
128 | const struct attribute *attr, const char *group); | |
129 | void sysfs_remove_file_from_group(struct kobject *kobj, | |
130 | const struct attribute *attr, const char *group); | |
131 | ||
4508a7a7 | 132 | void sysfs_notify(struct kobject * k, char *dir, char *attr); |
1da177e4 | 133 | |
b592fcfe EB |
134 | |
135 | extern int sysfs_make_shadowed_dir(struct kobject *kobj, | |
136 | void * (*follow_link)(struct dentry *, struct nameidata *)); | |
137 | extern struct dentry *sysfs_create_shadow_dir(struct kobject *kobj); | |
138 | extern void sysfs_remove_shadow_dir(struct dentry *dir); | |
139 | ||
f20a9ead AM |
140 | extern int __must_check sysfs_init(void); |
141 | ||
1da177e4 LT |
142 | #else /* CONFIG_SYSFS */ |
143 | ||
d9a9cdfb | 144 | static inline int sysfs_schedule_callback(struct kobject *kobj, |
523ded71 | 145 | void (*func)(void *), void *data, struct module *owner) |
d9a9cdfb AS |
146 | { |
147 | return -ENOSYS; | |
148 | } | |
149 | ||
b592fcfe | 150 | static inline int sysfs_create_dir(struct kobject * k, struct dentry *shadow) |
1da177e4 LT |
151 | { |
152 | return 0; | |
153 | } | |
154 | ||
155 | static inline void sysfs_remove_dir(struct kobject * k) | |
156 | { | |
157 | ; | |
158 | } | |
159 | ||
b592fcfe EB |
160 | static inline int sysfs_rename_dir(struct kobject * k, |
161 | struct dentry *new_parent, | |
162 | const char *new_name) | |
1da177e4 LT |
163 | { |
164 | return 0; | |
165 | } | |
166 | ||
8a82472f CH |
167 | static inline int sysfs_move_dir(struct kobject * k, struct kobject * new_parent) |
168 | { | |
169 | return 0; | |
170 | } | |
171 | ||
1da177e4 LT |
172 | static inline int sysfs_create_file(struct kobject * k, const struct attribute * a) |
173 | { | |
174 | return 0; | |
175 | } | |
176 | ||
177 | static inline int sysfs_update_file(struct kobject * k, const struct attribute * a) | |
178 | { | |
179 | return 0; | |
180 | } | |
31e5abe9 KS |
181 | static inline int sysfs_chmod_file(struct kobject *kobj, struct attribute *attr, mode_t mode) |
182 | { | |
183 | return 0; | |
184 | } | |
1da177e4 LT |
185 | |
186 | static inline void sysfs_remove_file(struct kobject * k, const struct attribute * a) | |
187 | { | |
188 | ; | |
189 | } | |
190 | ||
e3a15db2 | 191 | static inline int sysfs_create_link(struct kobject * k, struct kobject * t, const char * n) |
1da177e4 LT |
192 | { |
193 | return 0; | |
194 | } | |
195 | ||
e3a15db2 | 196 | static inline void sysfs_remove_link(struct kobject * k, const char * name) |
1da177e4 LT |
197 | { |
198 | ; | |
199 | } | |
200 | ||
201 | ||
202 | static inline int sysfs_create_bin_file(struct kobject * k, struct bin_attribute * a) | |
203 | { | |
204 | return 0; | |
205 | } | |
206 | ||
207 | static inline int sysfs_remove_bin_file(struct kobject * k, struct bin_attribute * a) | |
208 | { | |
209 | return 0; | |
210 | } | |
211 | ||
212 | static inline int sysfs_create_group(struct kobject * k, const struct attribute_group *g) | |
213 | { | |
214 | return 0; | |
215 | } | |
216 | ||
217 | static inline void sysfs_remove_group(struct kobject * k, const struct attribute_group * g) | |
218 | { | |
219 | ; | |
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 | ||
4508a7a7 N |
233 | static inline void sysfs_notify(struct kobject * k, char *dir, char *attr) |
234 | { | |
235 | } | |
236 | ||
b592fcfe EB |
237 | static inline int sysfs_make_shadowed_dir(struct kobject *kobj, |
238 | void * (*follow_link)(struct dentry *, struct nameidata *)) | |
239 | { | |
240 | return 0; | |
241 | } | |
242 | ||
f20a9ead AM |
243 | static inline int __must_check sysfs_init(void) |
244 | { | |
245 | return 0; | |
246 | } | |
247 | ||
1da177e4 LT |
248 | #endif /* CONFIG_SYSFS */ |
249 | ||
250 | #endif /* _SYSFS_H_ */ |