2 * sysfs.h - definitions for the device driver filesystem
4 * Copyright (c) 2001,2002 Patrick Mochel
5 * Copyright (c) 2004 Silicon Graphics, Inc.
7 * Please see Documentation/filesystems/sysfs.txt for more information.
13 #include <linux/compiler.h>
14 #include <linux/errno.h>
15 #include <linux/list.h>
16 #include <asm/atomic.h>
25 struct module
* owner
;
29 struct attribute_group
{
31 struct attribute
** attrs
;
37 * Use these macros to make defining attributes easier. See include/linux/device.h
41 #define __ATTR(_name,_mode,_show,_store) { \
42 .attr = {.name = __stringify(_name), .mode = _mode, .owner = THIS_MODULE }, \
47 #define __ATTR_RO(_name) { \
48 .attr = { .name = __stringify(_name), .mode = 0444, .owner = THIS_MODULE }, \
49 .show = _name##_show, \
52 #define __ATTR_NULL { .attr = { .name = NULL } }
54 #define attr_name(_attr) (_attr).attr.name
56 struct vm_area_struct
;
58 struct bin_attribute
{
59 struct attribute attr
;
62 ssize_t (*read
)(struct kobject
*, char *, loff_t
, size_t);
63 ssize_t (*write
)(struct kobject
*, char *, loff_t
, size_t);
64 int (*mmap
)(struct kobject
*, struct bin_attribute
*attr
,
65 struct vm_area_struct
*vma
);
69 ssize_t (*show
)(struct kobject
*, struct attribute
*,char *);
70 ssize_t (*store
)(struct kobject
*,struct attribute
*,const char *, size_t);
73 #define SYSFS_ROOT 0x0001
74 #define SYSFS_DIR 0x0002
75 #define SYSFS_KOBJ_ATTR 0x0004
76 #define SYSFS_KOBJ_BIN_ATTR 0x0008
77 #define SYSFS_KOBJ_LINK 0x0020
78 #define SYSFS_NOT_PINNED (SYSFS_KOBJ_ATTR | SYSFS_KOBJ_BIN_ATTR | SYSFS_KOBJ_LINK)
79 #define SYSFS_COPY_NAME (SYSFS_DIR | SYSFS_KOBJ_LINK)
83 extern int sysfs_schedule_callback(struct kobject
*kobj
,
84 void (*func
)(void *), void *data
, struct module
*owner
);
86 extern int __must_check
87 sysfs_create_dir(struct kobject
*, struct dentry
*);
90 sysfs_remove_dir(struct kobject
*);
92 extern int __must_check
93 sysfs_rename_dir(struct kobject
*, struct dentry
*, const char *new_name
);
95 extern int __must_check
96 sysfs_move_dir(struct kobject
*, struct kobject
*);
98 extern int __must_check
99 sysfs_create_file(struct kobject
*, const struct attribute
*);
101 extern int __must_check
102 sysfs_update_file(struct kobject
*, const struct attribute
*);
104 extern int __must_check
105 sysfs_chmod_file(struct kobject
*kobj
, struct attribute
*attr
, mode_t mode
);
108 sysfs_remove_file(struct kobject
*, const struct attribute
*);
110 extern int __must_check
111 sysfs_create_link(struct kobject
* kobj
, struct kobject
* target
, const char * name
);
114 sysfs_remove_link(struct kobject
*, const char * name
);
116 int __must_check
sysfs_create_bin_file(struct kobject
*kobj
,
117 struct bin_attribute
*attr
);
118 void sysfs_remove_bin_file(struct kobject
*kobj
, struct bin_attribute
*attr
);
120 int __must_check
sysfs_create_group(struct kobject
*,
121 const struct attribute_group
*);
122 void sysfs_remove_group(struct kobject
*, const struct attribute_group
*);
123 int sysfs_add_file_to_group(struct kobject
*kobj
,
124 const struct attribute
*attr
, const char *group
);
125 void sysfs_remove_file_from_group(struct kobject
*kobj
,
126 const struct attribute
*attr
, const char *group
);
128 void sysfs_notify(struct kobject
* k
, char *dir
, char *attr
);
131 extern int sysfs_make_shadowed_dir(struct kobject
*kobj
,
132 void * (*follow_link
)(struct dentry
*, struct nameidata
*));
133 extern struct dentry
*sysfs_create_shadow_dir(struct kobject
*kobj
);
134 extern void sysfs_remove_shadow_dir(struct dentry
*dir
);
136 extern int __must_check
sysfs_init(void);
138 #else /* CONFIG_SYSFS */
140 static inline int sysfs_schedule_callback(struct kobject
*kobj
,
141 void (*func
)(void *), void *data
, struct module
*owner
)
146 static inline int sysfs_create_dir(struct kobject
* k
, struct dentry
*shadow
)
151 static inline void sysfs_remove_dir(struct kobject
* k
)
156 static inline int sysfs_rename_dir(struct kobject
* k
,
157 struct dentry
*new_parent
,
158 const char *new_name
)
163 static inline int sysfs_move_dir(struct kobject
* k
, struct kobject
* new_parent
)
168 static inline int sysfs_create_file(struct kobject
* k
, const struct attribute
* a
)
173 static inline int sysfs_update_file(struct kobject
* k
, const struct attribute
* a
)
177 static inline int sysfs_chmod_file(struct kobject
*kobj
, struct attribute
*attr
, mode_t mode
)
182 static inline void sysfs_remove_file(struct kobject
* k
, const struct attribute
* a
)
187 static inline int sysfs_create_link(struct kobject
* k
, struct kobject
* t
, const char * n
)
192 static inline void sysfs_remove_link(struct kobject
* k
, const char * name
)
198 static inline int sysfs_create_bin_file(struct kobject
* k
, struct bin_attribute
* a
)
203 static inline int sysfs_remove_bin_file(struct kobject
* k
, struct bin_attribute
* a
)
208 static inline int sysfs_create_group(struct kobject
* k
, const struct attribute_group
*g
)
213 static inline void sysfs_remove_group(struct kobject
* k
, const struct attribute_group
* g
)
218 static inline int sysfs_add_file_to_group(struct kobject
*kobj
,
219 const struct attribute
*attr
, const char *group
)
224 static inline void sysfs_remove_file_from_group(struct kobject
*kobj
,
225 const struct attribute
*attr
, const char *group
)
229 static inline void sysfs_notify(struct kobject
* k
, char *dir
, char *attr
)
233 static inline int sysfs_make_shadowed_dir(struct kobject
*kobj
,
234 void * (*follow_link
)(struct dentry
*, struct nameidata
*))
239 static inline int __must_check
sysfs_init(void)
244 #endif /* CONFIG_SYSFS */
246 #endif /* _SYSFS_H_ */
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