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 <asm/atomic.h>
21 struct module
* owner
;
25 struct attribute_group
{
27 struct attribute
** attrs
;
33 * Use these macros to make defining attributes easier. See include/linux/device.h
37 #define __ATTR(_name,_mode,_show,_store) { \
38 .attr = {.name = __stringify(_name), .mode = _mode, .owner = THIS_MODULE }, \
43 #define __ATTR_RO(_name) { \
44 .attr = { .name = __stringify(_name), .mode = 0444, .owner = THIS_MODULE }, \
45 .show = _name##_show, \
48 #define __ATTR_NULL { .attr = { .name = NULL } }
50 #define attr_name(_attr) (_attr).attr.name
52 struct vm_area_struct
;
54 struct bin_attribute
{
55 struct attribute attr
;
58 ssize_t (*read
)(struct kobject
*, char *, loff_t
, size_t);
59 ssize_t (*write
)(struct kobject
*, char *, loff_t
, size_t);
60 int (*mmap
)(struct kobject
*, struct bin_attribute
*attr
,
61 struct vm_area_struct
*vma
);
65 ssize_t (*show
)(struct kobject
*, struct attribute
*,char *);
66 ssize_t (*store
)(struct kobject
*,struct attribute
*,const char *, size_t);
71 struct list_head s_sibling
;
72 struct list_head s_children
;
76 struct dentry
* s_dentry
;
77 struct iattr
* s_iattr
;
81 #define SYSFS_ROOT 0x0001
82 #define SYSFS_DIR 0x0002
83 #define SYSFS_KOBJ_ATTR 0x0004
84 #define SYSFS_KOBJ_BIN_ATTR 0x0008
85 #define SYSFS_KOBJ_LINK 0x0020
86 #define SYSFS_NOT_PINNED (SYSFS_KOBJ_ATTR | SYSFS_KOBJ_BIN_ATTR | SYSFS_KOBJ_LINK)
90 extern int __must_check
91 sysfs_create_dir(struct kobject
*);
94 sysfs_remove_dir(struct kobject
*);
96 extern int __must_check
97 sysfs_rename_dir(struct kobject
*, const char *new_name
);
99 extern int __must_check
100 sysfs_create_file(struct kobject
*, const struct attribute
*);
102 extern int __must_check
103 sysfs_update_file(struct kobject
*, const struct attribute
*);
105 extern int __must_check
106 sysfs_chmod_file(struct kobject
*kobj
, struct attribute
*attr
, mode_t mode
);
109 sysfs_remove_file(struct kobject
*, const struct attribute
*);
111 extern int __must_check
112 sysfs_create_link(struct kobject
* kobj
, struct kobject
* target
, const char * name
);
115 sysfs_remove_link(struct kobject
*, const char * name
);
117 int __must_check
sysfs_create_bin_file(struct kobject
*kobj
,
118 struct bin_attribute
*attr
);
119 void sysfs_remove_bin_file(struct kobject
*kobj
, struct bin_attribute
*attr
);
121 int __must_check
sysfs_create_group(struct kobject
*,
122 const struct attribute_group
*);
123 void sysfs_remove_group(struct kobject
*, const struct attribute_group
*);
124 void sysfs_notify(struct kobject
* k
, char *dir
, char *attr
);
126 extern int __must_check
sysfs_init(void);
128 #else /* CONFIG_SYSFS */
130 static inline int sysfs_create_dir(struct kobject
* k
)
135 static inline void sysfs_remove_dir(struct kobject
* k
)
140 static inline int sysfs_rename_dir(struct kobject
* k
, const char *new_name
)
145 static inline int sysfs_create_file(struct kobject
* k
, const struct attribute
* a
)
150 static inline int sysfs_update_file(struct kobject
* k
, const struct attribute
* a
)
154 static inline int sysfs_chmod_file(struct kobject
*kobj
, struct attribute
*attr
, mode_t mode
)
159 static inline void sysfs_remove_file(struct kobject
* k
, const struct attribute
* a
)
164 static inline int sysfs_create_link(struct kobject
* k
, struct kobject
* t
, const char * n
)
169 static inline void sysfs_remove_link(struct kobject
* k
, const char * name
)
175 static inline int sysfs_create_bin_file(struct kobject
* k
, struct bin_attribute
* a
)
180 static inline int sysfs_remove_bin_file(struct kobject
* k
, struct bin_attribute
* a
)
185 static inline int sysfs_create_group(struct kobject
* k
, const struct attribute_group
*g
)
190 static inline void sysfs_remove_group(struct kobject
* k
, const struct attribute_group
* g
)
195 static inline void sysfs_notify(struct kobject
* k
, char *dir
, char *attr
)
199 static inline int __must_check
sysfs_init(void)
204 #endif /* CONFIG_SYSFS */
206 #endif /* _SYSFS_H_ */