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> |
bf0acc33 | 14 | #include <linux/list.h> |
1da177e4 LT |
15 | #include <asm/atomic.h> |
16 | ||
17 | struct kobject; | |
18 | struct module; | |
19 | ||
20 | struct attribute { | |
d48593bf | 21 | const char * name; |
1da177e4 LT |
22 | struct module * owner; |
23 | mode_t mode; | |
24 | }; | |
25 | ||
26 | struct attribute_group { | |
d48593bf | 27 | const char * name; |
1da177e4 LT |
28 | struct attribute ** attrs; |
29 | }; | |
30 | ||
31 | ||
32 | ||
33 | /** | |
34 | * Use these macros to make defining attributes easier. See include/linux/device.h | |
35 | * for examples.. | |
36 | */ | |
37 | ||
38 | #define __ATTR(_name,_mode,_show,_store) { \ | |
39 | .attr = {.name = __stringify(_name), .mode = _mode, .owner = THIS_MODULE }, \ | |
40 | .show = _show, \ | |
41 | .store = _store, \ | |
42 | } | |
43 | ||
44 | #define __ATTR_RO(_name) { \ | |
45 | .attr = { .name = __stringify(_name), .mode = 0444, .owner = THIS_MODULE }, \ | |
46 | .show = _name##_show, \ | |
47 | } | |
48 | ||
49 | #define __ATTR_NULL { .attr = { .name = NULL } } | |
50 | ||
51 | #define attr_name(_attr) (_attr).attr.name | |
52 | ||
53 | struct vm_area_struct; | |
54 | ||
55 | struct bin_attribute { | |
56 | struct attribute attr; | |
57 | size_t size; | |
58 | void *private; | |
59 | ssize_t (*read)(struct kobject *, char *, loff_t, size_t); | |
60 | ssize_t (*write)(struct kobject *, char *, loff_t, size_t); | |
61 | int (*mmap)(struct kobject *, struct bin_attribute *attr, | |
62 | struct vm_area_struct *vma); | |
63 | }; | |
64 | ||
65 | struct sysfs_ops { | |
66 | ssize_t (*show)(struct kobject *, struct attribute *,char *); | |
67 | ssize_t (*store)(struct kobject *,struct attribute *,const char *, size_t); | |
68 | }; | |
69 | ||
70 | struct sysfs_dirent { | |
71 | atomic_t s_count; | |
72 | struct list_head s_sibling; | |
73 | struct list_head s_children; | |
74 | void * s_element; | |
75 | int s_type; | |
76 | umode_t s_mode; | |
77 | struct dentry * s_dentry; | |
988d186d | 78 | struct iattr * s_iattr; |
4508a7a7 | 79 | atomic_t s_event; |
1da177e4 LT |
80 | }; |
81 | ||
82 | #define SYSFS_ROOT 0x0001 | |
83 | #define SYSFS_DIR 0x0002 | |
84 | #define SYSFS_KOBJ_ATTR 0x0004 | |
85 | #define SYSFS_KOBJ_BIN_ATTR 0x0008 | |
86 | #define SYSFS_KOBJ_LINK 0x0020 | |
87 | #define SYSFS_NOT_PINNED (SYSFS_KOBJ_ATTR | SYSFS_KOBJ_BIN_ATTR | SYSFS_KOBJ_LINK) | |
88 | ||
89 | #ifdef CONFIG_SYSFS | |
90 | ||
4a7fb636 | 91 | extern int __must_check |
1da177e4 LT |
92 | sysfs_create_dir(struct kobject *); |
93 | ||
94 | extern void | |
95 | sysfs_remove_dir(struct kobject *); | |
96 | ||
4a7fb636 | 97 | extern int __must_check |
1da177e4 LT |
98 | sysfs_rename_dir(struct kobject *, const char *new_name); |
99 | ||
8a82472f CH |
100 | extern int __must_check |
101 | sysfs_move_dir(struct kobject *, struct kobject *); | |
102 | ||
4a7fb636 | 103 | extern int __must_check |
1da177e4 LT |
104 | sysfs_create_file(struct kobject *, const struct attribute *); |
105 | ||
4a7fb636 | 106 | extern int __must_check |
1da177e4 LT |
107 | sysfs_update_file(struct kobject *, const struct attribute *); |
108 | ||
4a7fb636 | 109 | extern int __must_check |
31e5abe9 KS |
110 | sysfs_chmod_file(struct kobject *kobj, struct attribute *attr, mode_t mode); |
111 | ||
1da177e4 LT |
112 | extern void |
113 | sysfs_remove_file(struct kobject *, const struct attribute *); | |
114 | ||
4a7fb636 | 115 | extern int __must_check |
e3a15db2 | 116 | sysfs_create_link(struct kobject * kobj, struct kobject * target, const char * name); |
1da177e4 LT |
117 | |
118 | extern void | |
e3a15db2 | 119 | sysfs_remove_link(struct kobject *, const char * name); |
1da177e4 | 120 | |
4a7fb636 AM |
121 | int __must_check sysfs_create_bin_file(struct kobject *kobj, |
122 | struct bin_attribute *attr); | |
995982ca | 123 | void sysfs_remove_bin_file(struct kobject *kobj, struct bin_attribute *attr); |
1da177e4 | 124 | |
4a7fb636 AM |
125 | int __must_check sysfs_create_group(struct kobject *, |
126 | const struct attribute_group *); | |
1da177e4 | 127 | void sysfs_remove_group(struct kobject *, const struct attribute_group *); |
4508a7a7 | 128 | void sysfs_notify(struct kobject * k, char *dir, char *attr); |
1da177e4 | 129 | |
f20a9ead AM |
130 | extern int __must_check sysfs_init(void); |
131 | ||
1da177e4 LT |
132 | #else /* CONFIG_SYSFS */ |
133 | ||
134 | static inline int sysfs_create_dir(struct kobject * k) | |
135 | { | |
136 | return 0; | |
137 | } | |
138 | ||
139 | static inline void sysfs_remove_dir(struct kobject * k) | |
140 | { | |
141 | ; | |
142 | } | |
143 | ||
144 | static inline int sysfs_rename_dir(struct kobject * k, const char *new_name) | |
145 | { | |
146 | return 0; | |
147 | } | |
148 | ||
8a82472f CH |
149 | static inline int sysfs_move_dir(struct kobject * k, struct kobject * new_parent) |
150 | { | |
151 | return 0; | |
152 | } | |
153 | ||
1da177e4 LT |
154 | static inline int sysfs_create_file(struct kobject * k, const struct attribute * a) |
155 | { | |
156 | return 0; | |
157 | } | |
158 | ||
159 | static inline int sysfs_update_file(struct kobject * k, const struct attribute * a) | |
160 | { | |
161 | return 0; | |
162 | } | |
31e5abe9 KS |
163 | static inline int sysfs_chmod_file(struct kobject *kobj, struct attribute *attr, mode_t mode) |
164 | { | |
165 | return 0; | |
166 | } | |
1da177e4 LT |
167 | |
168 | static inline void sysfs_remove_file(struct kobject * k, const struct attribute * a) | |
169 | { | |
170 | ; | |
171 | } | |
172 | ||
e3a15db2 | 173 | static inline int sysfs_create_link(struct kobject * k, struct kobject * t, const char * n) |
1da177e4 LT |
174 | { |
175 | return 0; | |
176 | } | |
177 | ||
e3a15db2 | 178 | static inline void sysfs_remove_link(struct kobject * k, const char * name) |
1da177e4 LT |
179 | { |
180 | ; | |
181 | } | |
182 | ||
183 | ||
184 | static inline int sysfs_create_bin_file(struct kobject * k, struct bin_attribute * a) | |
185 | { | |
186 | return 0; | |
187 | } | |
188 | ||
189 | static inline int sysfs_remove_bin_file(struct kobject * k, struct bin_attribute * a) | |
190 | { | |
191 | return 0; | |
192 | } | |
193 | ||
194 | static inline int sysfs_create_group(struct kobject * k, const struct attribute_group *g) | |
195 | { | |
196 | return 0; | |
197 | } | |
198 | ||
199 | static inline void sysfs_remove_group(struct kobject * k, const struct attribute_group * g) | |
200 | { | |
201 | ; | |
202 | } | |
203 | ||
4508a7a7 N |
204 | static inline void sysfs_notify(struct kobject * k, char *dir, char *attr) |
205 | { | |
206 | } | |
207 | ||
f20a9ead AM |
208 | static inline int __must_check sysfs_init(void) |
209 | { | |
210 | return 0; | |
211 | } | |
212 | ||
1da177e4 LT |
213 | #endif /* CONFIG_SYSFS */ |
214 | ||
215 | #endif /* _SYSFS_H_ */ |