1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
|
/*
* sysfs.h - definitions for the device driver filesystem
*
* Copyright (c) 2001,2002 Patrick Mochel
* Copyright (c) 2004 Silicon Graphics, Inc.
*
* Please see Documentation/filesystems/sysfs.txt for more information.
*/
#ifndef _SYSFS_H_
#define _SYSFS_H_
#include <linux/compiler.h>
#include <linux/errno.h>
#include <linux/list.h>
#include <asm/atomic.h>
struct kobject;
struct module;
struct nameidata;
struct dentry;
/* FIXME
* The *owner field is no longer used, but leave around
* until the tree gets cleaned up fully.
*/
struct attribute {
const char * name;
struct module * owner;
mode_t mode;
};
struct attribute_group {
const char * name;
struct attribute ** attrs;
};
/**
* Use these macros to make defining attributes easier. See include/linux/device.h
* for examples..
*/
#define __ATTR(_name,_mode,_show,_store) { \
.attr = {.name = __stringify(_name), .mode = _mode }, \
.show = _show, \
.store = _store, \
}
#define __ATTR_RO(_name) { \
.attr = { .name = __stringify(_name), .mode = 0444 }, \
.show = _name##_show, \
}
#define __ATTR_NULL { .attr = { .name = NULL } }
#define attr_name(_attr) (_attr).attr.name
struct vm_area_struct;
struct bin_attribute {
struct attribute attr;
size_t size;
void *private;
ssize_t (*read)(struct kobject *, char *, loff_t, size_t);
ssize_t (*write)(struct kobject *, char *, loff_t, size_t);
int (*mmap)(struct kobject *, struct bin_attribute *attr,
struct vm_area_struct *vma);
};
struct sysfs_ops {
ssize_t (*show)(struct kobject *, struct attribute *,char *);
ssize_t (*store)(struct kobject *,struct attribute *,const char *, size_t);
};
#define SYSFS_TYPE_MASK 0x00ff
#define SYSFS_ROOT 0x0001
#define SYSFS_DIR 0x0002
#define SYSFS_KOBJ_ATTR 0x0004
#define SYSFS_KOBJ_BIN_ATTR 0x0008
#define SYSFS_KOBJ_LINK 0x0020
#define SYSFS_NOT_PINNED (SYSFS_KOBJ_ATTR | SYSFS_KOBJ_BIN_ATTR | SYSFS_KOBJ_LINK)
#define SYSFS_COPY_NAME (SYSFS_DIR | SYSFS_KOBJ_LINK)
#define SYSFS_FLAG_MASK ~SYSFS_TYPE_MASK
#ifdef CONFIG_SYSFS
extern int sysfs_schedule_callback(struct kobject *kobj,
void (*func)(void *), void *data, struct module *owner);
extern int __must_check
sysfs_create_dir(struct kobject *, struct dentry *);
extern void
sysfs_remove_dir(struct kobject *);
extern int __must_check
sysfs_rename_dir(struct kobject *, struct dentry *, const char *new_name);
extern int __must_check
sysfs_move_dir(struct kobject *, struct kobject *);
extern int __must_check
sysfs_create_file(struct kobject *, const struct attribute *);
extern int __must_check
sysfs_update_file(struct kobject *, const struct attribute *);
extern int __must_check
sysfs_chmod_file(struct kobject *kobj, struct attribute *attr, mode_t mode);
extern void
sysfs_remove_file(struct kobject *, const struct attribute *);
extern int __must_check
sysfs_create_link(struct kobject * kobj, struct kobject * target, const char * name);
extern void
sysfs_remove_link(struct kobject *, const char * name);
int __must_check sysfs_create_bin_file(struct kobject *kobj,
struct bin_attribute *attr);
void sysfs_remove_bin_file(struct kobject *kobj, struct bin_attribute *attr);
int __must_check sysfs_create_group(struct kobject *,
const struct attribute_group *);
void sysfs_remove_group(struct kobject *, const struct attribute_group *);
int sysfs_add_file_to_group(struct kobject *kobj,
const struct attribute *attr, const char *group);
void sysfs_remove_file_from_group(struct kobject *kobj,
const struct attribute *attr, const char *group);
void sysfs_notify(struct kobject * k, char *dir, char *attr);
extern int sysfs_make_shadowed_dir(struct kobject *kobj,
void * (*follow_link)(struct dentry *, struct nameidata *));
extern struct dentry *sysfs_create_shadow_dir(struct kobject *kobj);
extern void sysfs_remove_shadow_dir(struct dentry *dir);
extern int __must_check sysfs_init(void);
#else /* CONFIG_SYSFS */
static inline int sysfs_schedule_callback(struct kobject *kobj,
void (*func)(void *), void *data, struct module *owner)
{
return -ENOSYS;
}
static inline int sysfs_create_dir(struct kobject * k, struct dentry *shadow)
{
return 0;
}
static inline void sysfs_remove_dir(struct kobject * k)
{
;
}
static inline int sysfs_rename_dir(struct kobject * k,
struct dentry *new_parent,
const char *new_name)
{
return 0;
}
static inline int sysfs_move_dir(struct kobject * k, struct kobject * new_parent)
{
return 0;
}
static inline int sysfs_create_file(struct kobject * k, const struct attribute * a)
{
return 0;
}
static inline int sysfs_update_file(struct kobject * k, const struct attribute * a)
{
return 0;
}
static inline int sysfs_chmod_file(struct kobject *kobj, struct attribute *attr, mode_t mode)
{
return 0;
}
static inline void sysfs_remove_file(struct kobject * k, const struct attribute * a)
{
;
}
static inline int sysfs_create_link(struct kobject * k, struct kobject * t, const char * n)
{
return 0;
}
static inline void sysfs_remove_link(struct kobject * k, const char * name)
{
;
}
static inline int sysfs_create_bin_file(struct kobject * k, struct bin_attribute * a)
{
return 0;
}
static inline int sysfs_remove_bin_file(struct kobject * k, struct bin_attribute * a)
{
return 0;
}
static inline int sysfs_create_group(struct kobject * k, const struct attribute_group *g)
{
return 0;
}
static inline void sysfs_remove_group(struct kobject * k, const struct attribute_group * g)
{
;
}
static inline int sysfs_add_file_to_group(struct kobject *kobj,
const struct attribute *attr, const char *group)
{
return 0;
}
static inline void sysfs_remove_file_from_group(struct kobject *kobj,
const struct attribute *attr, const char *group)
{
}
static inline void sysfs_notify(struct kobject * k, char *dir, char *attr)
{
}
static inline int sysfs_make_shadowed_dir(struct kobject *kobj,
void * (*follow_link)(struct dentry *, struct nameidata *))
{
return 0;
}
static inline int __must_check sysfs_init(void)
{
return 0;
}
#endif /* CONFIG_SYSFS */
#endif /* _SYSFS_H_ */
|
