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 #include <asm/atomic.h>
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);
64 struct list_head s_sibling;
65 struct list_head s_children;
69 struct dentry * s_dentry;
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)
82 sysfs_create_dir(struct kobject *);
85 sysfs_remove_dir(struct kobject *);
88 sysfs_rename_dir(struct kobject *, const char *new_name);
91 sysfs_create_file(struct kobject *, const struct attribute *);
94 sysfs_update_file(struct kobject *, const struct attribute *);
97 sysfs_remove_file(struct kobject *, const struct attribute *);
100 sysfs_create_link(struct kobject * kobj, struct kobject * target, char * name);
103 sysfs_remove_link(struct kobject *, char * name);
105 int sysfs_create_bin_file(struct kobject * kobj, struct bin_attribute * attr);
106 int sysfs_remove_bin_file(struct kobject * kobj, struct bin_attribute * attr);
108 int sysfs_create_group(struct kobject *, const struct attribute_group *);
109 void sysfs_remove_group(struct kobject *, const struct attribute_group *);
111 #else /* CONFIG_SYSFS */
113 static inline int sysfs_create_dir(struct kobject * k)
118 static inline void sysfs_remove_dir(struct kobject * k)
123 static inline int sysfs_rename_dir(struct kobject * k, const char *new_name)
128 static inline int sysfs_create_file(struct kobject * k, const struct attribute * a)
133 static inline int sysfs_update_file(struct kobject * k, const struct attribute * a)
138 static inline void sysfs_remove_file(struct kobject * k, const struct attribute * a)
143 static inline int sysfs_create_link(struct kobject * k, struct kobject * t, char * n)
148 static inline void sysfs_remove_link(struct kobject * k, char * name)
154 static inline int sysfs_create_bin_file(struct kobject * k, struct bin_attribute * a)
159 static inline int sysfs_remove_bin_file(struct kobject * k, struct bin_attribute * a)
164 static inline int sysfs_create_group(struct kobject * k, const struct attribute_group *g)
169 static inline void sysfs_remove_group(struct kobject * k, const struct attribute_group * g)
174 #endif /* CONFIG_SYSFS */
176 #endif /* _SYSFS_H_ */