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;
76 struct iattr * s_iattr;
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_chmod_file(struct kobject *kobj, struct attribute *attr, mode_t mode);
108 sysfs_remove_file(struct kobject *, const struct attribute *);
111 sysfs_create_link(struct kobject * kobj, struct kobject * target, const char * name);
114 sysfs_remove_link(struct kobject *, const char * name);
116 int sysfs_create_bin_file(struct kobject * kobj, struct bin_attribute * attr);
117 int sysfs_remove_bin_file(struct kobject * kobj, struct bin_attribute * attr);
119 int sysfs_create_group(struct kobject *, const struct attribute_group *);
120 void sysfs_remove_group(struct kobject *, const struct attribute_group *);
121 void sysfs_notify(struct kobject * k, char *dir, char *attr);
123 #else /* CONFIG_SYSFS */
125 static inline int sysfs_create_dir(struct kobject * k)
130 static inline void sysfs_remove_dir(struct kobject * k)
135 static inline int sysfs_rename_dir(struct kobject * k, const char *new_name)
140 static inline int sysfs_create_file(struct kobject * k, const struct attribute * a)
145 static inline int sysfs_update_file(struct kobject * k, const struct attribute * a)
149 static inline int sysfs_chmod_file(struct kobject *kobj, struct attribute *attr, mode_t mode)
154 static inline void sysfs_remove_file(struct kobject * k, const struct attribute * a)
159 static inline int sysfs_create_link(struct kobject * k, struct kobject * t, const char * n)
164 static inline void sysfs_remove_link(struct kobject * k, const char * name)
170 static inline int sysfs_create_bin_file(struct kobject * k, struct bin_attribute * a)
175 static inline int sysfs_remove_bin_file(struct kobject * k, struct bin_attribute * a)
180 static inline int sysfs_create_group(struct kobject * k, const struct attribute_group *g)
185 static inline void sysfs_remove_group(struct kobject * k, const struct attribute_group * g)
190 static inline void sysfs_notify(struct kobject * k, char *dir, char *attr)
194 #endif /* CONFIG_SYSFS */
196 #endif /* _SYSFS_H_ */