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 <asm/atomic.h>
15 #define SYSFS_SUPER_MAGIC 0x62656572
22 struct module * owner;
26 struct attribute_group {
28 struct attribute ** attrs;
34 * Use these macros to make defining attributes easier. See include/linux/device.h
38 #define __ATTR(_name,_mode,_show,_store) { \
39 .attr = {.name = __stringify(_name), .mode = _mode, .owner = THIS_MODULE }, \
44 #define __ATTR_RO(_name) { \
45 .attr = { .name = __stringify(_name), .mode = 0444, .owner = THIS_MODULE }, \
46 .show = _name##_show, \
49 #define __ATTR_NULL { .attr = { .name = NULL } }
51 #define attr_name(_attr) (_attr).attr.name
53 struct vm_area_struct;
55 struct bin_attribute {
56 struct attribute attr;
59 ssize_t (*read)(struct kobject *, char *, loff_t, size_t);
60 ssize_t (*write)(struct kobject *, char *, loff_t, size_t);
61 int (*mmap)(struct kobject *, struct bin_attribute *attr,
62 struct vm_area_struct *vma);
66 ssize_t (*show)(struct kobject *, struct attribute *,char *);
67 ssize_t (*store)(struct kobject *,struct attribute *,const char *, size_t);
72 struct list_head s_sibling;
73 struct list_head s_children;
77 struct dentry * s_dentry;
80 #define SYSFS_ROOT 0x0001
81 #define SYSFS_DIR 0x0002
82 #define SYSFS_KOBJ_ATTR 0x0004
83 #define SYSFS_KOBJ_BIN_ATTR 0x0008
84 #define SYSFS_KOBJ_LINK 0x0020
85 #define SYSFS_NOT_PINNED (SYSFS_KOBJ_ATTR | SYSFS_KOBJ_BIN_ATTR | SYSFS_KOBJ_LINK)
90 sysfs_create_dir(struct kobject *);
93 sysfs_remove_dir(struct kobject *);
96 sysfs_rename_dir(struct kobject *, const char *new_name);
99 sysfs_create_file(struct kobject *, const struct attribute *);
102 sysfs_update_file(struct kobject *, const struct attribute *);
105 sysfs_remove_file(struct kobject *, const struct attribute *);
108 sysfs_create_link(struct kobject * kobj, struct kobject * target, char * name);
111 sysfs_remove_link(struct kobject *, char * name);
113 int sysfs_create_bin_file(struct kobject * kobj, struct bin_attribute * attr);
114 int sysfs_remove_bin_file(struct kobject * kobj, struct bin_attribute * attr);
116 int sysfs_create_group(struct kobject *, const struct attribute_group *);
117 void sysfs_remove_group(struct kobject *, const struct attribute_group *);
119 #else /* CONFIG_SYSFS */
121 static inline int sysfs_create_dir(struct kobject * k)
126 static inline void sysfs_remove_dir(struct kobject * k)
131 static inline int sysfs_rename_dir(struct kobject * k, const char *new_name)
136 static inline int sysfs_create_file(struct kobject * k, const struct attribute * a)
141 static inline int sysfs_update_file(struct kobject * k, const struct attribute * a)
146 static inline void sysfs_remove_file(struct kobject * k, const struct attribute * a)
151 static inline int sysfs_create_link(struct kobject * k, struct kobject * t, char * n)
156 static inline void sysfs_remove_link(struct kobject * k, char * name)
162 static inline int sysfs_create_bin_file(struct kobject * k, struct bin_attribute * a)
167 static inline int sysfs_remove_bin_file(struct kobject * k, struct bin_attribute * a)
172 static inline int sysfs_create_group(struct kobject * k, const struct attribute_group *g)
177 static inline void sysfs_remove_group(struct kobject * k, const struct attribute_group * g)
182 #endif /* CONFIG_SYSFS */
184 #endif /* _SYSFS_H_ */