2 * sysfs.h - definitions for the device driver filesystem
4 * Copyright (c) 2001,2002 Patrick Mochel
6 * Please see Documentation/filesystems/sysfs.txt for more information.
12 #define SYSFS_SUPER_MAGIC 0x62656572
19 struct module * owner;
23 struct attribute_group {
25 struct attribute ** attrs;
31 * Use these macros to make defining attributes easier. See include/linux/device.h
35 #define __ATTR(_name,_mode,_show,_store) { \
36 .attr = {.name = __stringify(_name), .mode = _mode, .owner = THIS_MODULE }, \
41 #define __ATTR_RO(_name) { \
42 .attr = { .name = __stringify(_name), .mode = 0444, .owner = THIS_MODULE }, \
43 .show = _name##_show, \
46 #define __ATTR_NULL { .attr = { .name = NULL } }
48 #define attr_name(_attr) (_attr).attr.name
50 struct bin_attribute {
51 struct attribute attr;
53 ssize_t (*read)(struct kobject *, char *, loff_t, size_t);
54 ssize_t (*write)(struct kobject *, char *, loff_t, size_t);
58 ssize_t (*show)(struct kobject *, struct attribute *,char *);
59 ssize_t (*store)(struct kobject *,struct attribute *,const char *, size_t);
65 sysfs_create_dir(struct kobject *);
68 sysfs_remove_dir(struct kobject *);
71 sysfs_rename_dir(struct kobject *, const char *new_name);
74 sysfs_create_file(struct kobject *, const struct attribute *);
77 sysfs_update_file(struct kobject *, const struct attribute *);
80 sysfs_remove_file(struct kobject *, const struct attribute *);
83 sysfs_create_link(struct kobject * kobj, struct kobject * target, char * name);
86 sysfs_remove_link(struct kobject *, char * name);
88 int sysfs_create_bin_file(struct kobject * kobj, struct bin_attribute * attr);
89 int sysfs_remove_bin_file(struct kobject * kobj, struct bin_attribute * attr);
91 int sysfs_create_group(struct kobject *, const struct attribute_group *);
92 void sysfs_remove_group(struct kobject *, const struct attribute_group *);
94 #else /* CONFIG_SYSFS */
96 static inline int sysfs_create_dir(struct kobject * k)
101 static inline void sysfs_remove_dir(struct kobject * k)
106 static inline int sysfs_rename_dir(struct kobject * k, const char *new_name)
111 static inline int sysfs_create_file(struct kobject * k, const struct attribute * a)
116 static inline int sysfs_update_file(struct kobject * k, const struct attribute * a)
121 static inline void sysfs_remove_file(struct kobject * k, const struct attribute * a)
126 static inline int sysfs_create_link(struct kobject * k, struct kobject * t, char * n)
131 static inline void sysfs_remove_link(struct kobject * k, char * name)
137 static inline int sysfs_create_bin_file(struct kobject * k, struct bin_attribute * a)
142 static inline int sysfs_remove_bin_file(struct kobject * k, struct bin_attribute * a)
147 static inline int sysfs_create_group(struct kobject * k, const struct attribute_group *g)
152 static inline void sysfs_remove_group(struct kobject * k, const struct attribute_group * g)
157 #endif /* CONFIG_SYSFS */
159 #endif /* _SYSFS_H_ */