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>
20 struct module * owner;
24 struct attribute_group {
26 struct attribute ** attrs;
32 * Use these macros to make defining attributes easier. See include/linux/device.h
36 #define __ATTR(_name,_mode,_show,_store) { \
37 .attr = {.name = __stringify(_name), .mode = _mode, .owner = THIS_MODULE }, \
42 #define __ATTR_RO(_name) { \
43 .attr = { .name = __stringify(_name), .mode = 0444, .owner = THIS_MODULE }, \
44 .show = _name##_show, \
47 #define __ATTR_NULL { .attr = { .name = NULL } }
49 #define attr_name(_attr) (_attr).attr.name
51 struct vm_area_struct;
53 struct bin_attribute {
54 struct attribute attr;
57 ssize_t (*read)(struct kobject *, char *, loff_t, size_t);
58 ssize_t (*write)(struct kobject *, char *, loff_t, size_t);
59 int (*mmap)(struct kobject *, struct bin_attribute *attr,
60 struct vm_area_struct *vma);
64 ssize_t (*show)(struct kobject *, struct attribute *,char *);
65 ssize_t (*store)(struct kobject *,struct attribute *,const char *, size_t);
70 struct list_head s_sibling;
71 struct list_head s_children;
75 struct dentry * s_dentry;
78 #define SYSFS_ROOT 0x0001
79 #define SYSFS_DIR 0x0002
80 #define SYSFS_KOBJ_ATTR 0x0004
81 #define SYSFS_KOBJ_BIN_ATTR 0x0008
82 #define SYSFS_KOBJ_LINK 0x0020
83 #define SYSFS_NOT_PINNED (SYSFS_KOBJ_ATTR | SYSFS_KOBJ_BIN_ATTR | SYSFS_KOBJ_LINK)
88 sysfs_create_dir(struct kobject *);
91 sysfs_remove_dir(struct kobject *);
94 sysfs_rename_dir(struct kobject *, const char *new_name);
97 sysfs_create_file(struct kobject *, const struct attribute *);
100 sysfs_update_file(struct kobject *, const struct attribute *);
103 sysfs_chmod_file(struct kobject *kobj, struct attribute *attr, mode_t mode);
106 sysfs_remove_file(struct kobject *, const struct attribute *);
109 sysfs_create_link(struct kobject * kobj, struct kobject * target, char * name);
112 sysfs_remove_link(struct kobject *, char * name);
114 int sysfs_create_bin_file(struct kobject * kobj, struct bin_attribute * attr);
115 int sysfs_remove_bin_file(struct kobject * kobj, struct bin_attribute * attr);
117 int sysfs_create_group(struct kobject *, const struct attribute_group *);
118 void sysfs_remove_group(struct kobject *, const struct attribute_group *);
120 #else /* CONFIG_SYSFS */
122 static inline int sysfs_create_dir(struct kobject * k)
127 static inline void sysfs_remove_dir(struct kobject * k)
132 static inline int sysfs_rename_dir(struct kobject * k, const char *new_name)
137 static inline int sysfs_create_file(struct kobject * k, const struct attribute * a)
142 static inline int sysfs_update_file(struct kobject * k, const struct attribute * a)
146 static inline int sysfs_chmod_file(struct kobject *kobj, struct attribute *attr, mode_t mode)
151 static inline void sysfs_remove_file(struct kobject * k, const struct attribute * a)
156 static inline int sysfs_create_link(struct kobject * k, struct kobject * t, char * n)
161 static inline void sysfs_remove_link(struct kobject * k, char * name)
167 static inline int sysfs_create_bin_file(struct kobject * k, struct bin_attribute * a)
172 static inline int sysfs_remove_bin_file(struct kobject * k, struct bin_attribute * a)
177 static inline int sysfs_create_group(struct kobject * k, const struct attribute_group *g)
182 static inline void sysfs_remove_group(struct kobject * k, const struct attribute_group * g)
187 #endif /* CONFIG_SYSFS */
189 #endif /* _SYSFS_H_ */