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/list.h>
15 #include <asm/atomic.h>
24 struct module
* owner
;
28 struct attribute_group
{
30 struct attribute
** attrs
;
36 * Use these macros to make defining attributes easier. See include/linux/device.h
40 #define __ATTR(_name,_mode,_show,_store) { \
41 .attr = {.name = __stringify(_name), .mode = _mode, .owner = THIS_MODULE }, \
46 #define __ATTR_RO(_name) { \
47 .attr = { .name = __stringify(_name), .mode = 0444, .owner = THIS_MODULE }, \
48 .show = _name##_show, \
51 #define __ATTR_NULL { .attr = { .name = NULL } }
53 #define attr_name(_attr) (_attr).attr.name
55 struct vm_area_struct
;
57 struct bin_attribute
{
58 struct attribute attr
;
61 ssize_t (*read
)(struct kobject
*, char *, loff_t
, size_t);
62 ssize_t (*write
)(struct kobject
*, char *, loff_t
, size_t);
63 int (*mmap
)(struct kobject
*, struct bin_attribute
*attr
,
64 struct vm_area_struct
*vma
);
68 ssize_t (*show
)(struct kobject
*, struct attribute
*,char *);
69 ssize_t (*store
)(struct kobject
*,struct attribute
*,const char *, size_t);
72 #define SYSFS_ROOT 0x0001
73 #define SYSFS_DIR 0x0002
74 #define SYSFS_KOBJ_ATTR 0x0004
75 #define SYSFS_KOBJ_BIN_ATTR 0x0008
76 #define SYSFS_KOBJ_LINK 0x0020
77 #define SYSFS_NOT_PINNED (SYSFS_KOBJ_ATTR | SYSFS_KOBJ_BIN_ATTR | SYSFS_KOBJ_LINK)
81 extern int __must_check
82 sysfs_create_dir(struct kobject
*, struct dentry
*);
85 sysfs_remove_dir(struct kobject
*);
87 extern int __must_check
88 sysfs_rename_dir(struct kobject
*, struct dentry
*, const char *new_name
);
90 extern int __must_check
91 sysfs_move_dir(struct kobject
*, struct kobject
*);
93 extern int __must_check
94 sysfs_create_file(struct kobject
*, const struct attribute
*);
96 extern int __must_check
97 sysfs_update_file(struct kobject
*, const struct attribute
*);
99 extern int __must_check
100 sysfs_chmod_file(struct kobject
*kobj
, struct attribute
*attr
, mode_t mode
);
103 sysfs_remove_file(struct kobject
*, const struct attribute
*);
105 extern int __must_check
106 sysfs_create_link(struct kobject
* kobj
, struct kobject
* target
, const char * name
);
109 sysfs_remove_link(struct kobject
*, const char * name
);
111 int __must_check
sysfs_create_bin_file(struct kobject
*kobj
,
112 struct bin_attribute
*attr
);
113 void sysfs_remove_bin_file(struct kobject
*kobj
, struct bin_attribute
*attr
);
115 int __must_check
sysfs_create_group(struct kobject
*,
116 const struct attribute_group
*);
117 void sysfs_remove_group(struct kobject
*, const struct attribute_group
*);
118 int sysfs_add_file_to_group(struct kobject
*kobj
,
119 const struct attribute
*attr
, const char *group
);
120 void sysfs_remove_file_from_group(struct kobject
*kobj
,
121 const struct attribute
*attr
, const char *group
);
123 void sysfs_notify(struct kobject
* k
, char *dir
, char *attr
);
126 extern int sysfs_make_shadowed_dir(struct kobject
*kobj
,
127 void * (*follow_link
)(struct dentry
*, struct nameidata
*));
128 extern struct dentry
*sysfs_create_shadow_dir(struct kobject
*kobj
);
129 extern void sysfs_remove_shadow_dir(struct dentry
*dir
);
131 extern int __must_check
sysfs_init(void);
133 #else /* CONFIG_SYSFS */
135 static inline int sysfs_create_dir(struct kobject
* k
, struct dentry
*shadow
)
140 static inline void sysfs_remove_dir(struct kobject
* k
)
145 static inline int sysfs_rename_dir(struct kobject
* k
,
146 struct dentry
*new_parent
,
147 const char *new_name
)
152 static inline int sysfs_move_dir(struct kobject
* k
, struct kobject
* new_parent
)
157 static inline int sysfs_create_file(struct kobject
* k
, const struct attribute
* a
)
162 static inline int sysfs_update_file(struct kobject
* k
, const struct attribute
* a
)
166 static inline int sysfs_chmod_file(struct kobject
*kobj
, struct attribute
*attr
, mode_t mode
)
171 static inline void sysfs_remove_file(struct kobject
* k
, const struct attribute
* a
)
176 static inline int sysfs_create_link(struct kobject
* k
, struct kobject
* t
, const char * n
)
181 static inline void sysfs_remove_link(struct kobject
* k
, const char * name
)
187 static inline int sysfs_create_bin_file(struct kobject
* k
, struct bin_attribute
* a
)
192 static inline int sysfs_remove_bin_file(struct kobject
* k
, struct bin_attribute
* a
)
197 static inline int sysfs_create_group(struct kobject
* k
, const struct attribute_group
*g
)
202 static inline void sysfs_remove_group(struct kobject
* k
, const struct attribute_group
* g
)
207 static inline int sysfs_add_file_to_group(struct kobject
*kobj
,
208 const struct attribute
*attr
, const char *group
)
213 static inline void sysfs_remove_file_from_group(struct kobject
*kobj
,
214 const struct attribute
*attr
, const char *group
)
218 static inline void sysfs_notify(struct kobject
* k
, char *dir
, char *attr
)
222 static inline int sysfs_make_shadowed_dir(struct kobject
*kobj
,
223 void * (*follow_link
)(struct dentry
*, struct nameidata
*))
228 static inline int __must_check
sysfs_init(void)
233 #endif /* CONFIG_SYSFS */
235 #endif /* _SYSFS_H_ */
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