]>
git.proxmox.com Git - mirror_ubuntu-bionic-kernel.git/blob - include/linux/sysfs.h
2 * sysfs.h - definitions for the device driver filesystem
4 * Copyright (c) 2001,2002 Patrick Mochel
5 * Copyright (c) 2004 Silicon Graphics, Inc.
6 * Copyright (c) 2007 SUSE Linux Products GmbH
7 * Copyright (c) 2007 Tejun Heo <teheo@suse.de>
9 * Please see Documentation/filesystems/sysfs.txt for more information.
15 #include <linux/compiler.h>
16 #include <linux/errno.h>
17 #include <linux/list.h>
18 #include <asm/atomic.h>
24 * The *owner field is no longer used, but leave around
25 * until the tree gets cleaned up fully.
33 struct attribute_group
{
35 mode_t (*is_visible
)(struct kobject
*,
36 struct attribute
*, int);
37 struct attribute
**attrs
;
43 * Use these macros to make defining attributes easier. See include/linux/device.h
47 #define __ATTR(_name,_mode,_show,_store) { \
48 .attr = {.name = __stringify(_name), .mode = _mode }, \
53 #define __ATTR_RO(_name) { \
54 .attr = { .name = __stringify(_name), .mode = 0444 }, \
55 .show = _name##_show, \
58 #define __ATTR_NULL { .attr = { .name = NULL } }
60 #define attr_name(_attr) (_attr).attr.name
62 struct vm_area_struct
;
64 struct bin_attribute
{
65 struct attribute attr
;
68 ssize_t (*read
)(struct kobject
*, struct bin_attribute
*,
69 char *, loff_t
, size_t);
70 ssize_t (*write
)(struct kobject
*, struct bin_attribute
*,
71 char *, loff_t
, size_t);
72 int (*mmap
)(struct kobject
*, struct bin_attribute
*attr
,
73 struct vm_area_struct
*vma
);
77 ssize_t (*show
)(struct kobject
*, struct attribute
*,char *);
78 ssize_t (*store
)(struct kobject
*,struct attribute
*,const char *, size_t);
85 int sysfs_schedule_callback(struct kobject
*kobj
, void (*func
)(void *),
86 void *data
, struct module
*owner
);
88 int __must_check
sysfs_create_dir(struct kobject
*kobj
);
89 void sysfs_remove_dir(struct kobject
*kobj
);
90 int __must_check
sysfs_rename_dir(struct kobject
*kobj
, const char *new_name
);
91 int __must_check
sysfs_move_dir(struct kobject
*kobj
,
92 struct kobject
*new_parent_kobj
);
94 int __must_check
sysfs_create_file(struct kobject
*kobj
,
95 const struct attribute
*attr
);
96 int __must_check
sysfs_chmod_file(struct kobject
*kobj
, struct attribute
*attr
,
98 void sysfs_remove_file(struct kobject
*kobj
, const struct attribute
*attr
);
100 int __must_check
sysfs_create_bin_file(struct kobject
*kobj
,
101 struct bin_attribute
*attr
);
102 void sysfs_remove_bin_file(struct kobject
*kobj
, struct bin_attribute
*attr
);
104 int __must_check
sysfs_create_link(struct kobject
*kobj
, struct kobject
*target
,
106 int __must_check
sysfs_create_link_nowarn(struct kobject
*kobj
,
107 struct kobject
*target
,
109 void sysfs_remove_link(struct kobject
*kobj
, const char *name
);
111 int __must_check
sysfs_create_group(struct kobject
*kobj
,
112 const struct attribute_group
*grp
);
113 int sysfs_update_group(struct kobject
*kobj
,
114 const struct attribute_group
*grp
);
115 void sysfs_remove_group(struct kobject
*kobj
,
116 const struct attribute_group
*grp
);
117 int sysfs_add_file_to_group(struct kobject
*kobj
,
118 const struct attribute
*attr
, const char *group
);
119 void sysfs_remove_file_from_group(struct kobject
*kobj
,
120 const struct attribute
*attr
, const char *group
);
122 void sysfs_notify(struct kobject
*kobj
, const char *dir
, const char *attr
);
123 void sysfs_notify_dirent(struct sysfs_dirent
*sd
);
124 struct sysfs_dirent
*sysfs_get_dirent(struct sysfs_dirent
*parent_sd
,
125 const unsigned char *name
);
126 struct sysfs_dirent
*sysfs_get(struct sysfs_dirent
*sd
);
127 void sysfs_put(struct sysfs_dirent
*sd
);
128 void sysfs_printk_last_file(void);
129 int __must_check
sysfs_init(void);
131 #else /* CONFIG_SYSFS */
133 static inline int sysfs_schedule_callback(struct kobject
*kobj
,
134 void (*func
)(void *), void *data
, struct module
*owner
)
139 static inline int sysfs_create_dir(struct kobject
*kobj
)
144 static inline void sysfs_remove_dir(struct kobject
*kobj
)
148 static inline int sysfs_rename_dir(struct kobject
*kobj
, const char *new_name
)
153 static inline int sysfs_move_dir(struct kobject
*kobj
,
154 struct kobject
*new_parent_kobj
)
159 static inline int sysfs_create_file(struct kobject
*kobj
,
160 const struct attribute
*attr
)
165 static inline int sysfs_chmod_file(struct kobject
*kobj
,
166 struct attribute
*attr
, mode_t mode
)
171 static inline void sysfs_remove_file(struct kobject
*kobj
,
172 const struct attribute
*attr
)
176 static inline int sysfs_create_bin_file(struct kobject
*kobj
,
177 struct bin_attribute
*attr
)
182 static inline void sysfs_remove_bin_file(struct kobject
*kobj
,
183 struct bin_attribute
*attr
)
187 static inline int sysfs_create_link(struct kobject
*kobj
,
188 struct kobject
*target
, const char *name
)
193 static inline int sysfs_create_link_nowarn(struct kobject
*kobj
,
194 struct kobject
*target
,
200 static inline void sysfs_remove_link(struct kobject
*kobj
, const char *name
)
204 static inline int sysfs_create_group(struct kobject
*kobj
,
205 const struct attribute_group
*grp
)
210 static inline int sysfs_update_group(struct kobject
*kobj
,
211 const struct attribute_group
*grp
)
216 static inline void sysfs_remove_group(struct kobject
*kobj
,
217 const struct attribute_group
*grp
)
221 static inline int sysfs_add_file_to_group(struct kobject
*kobj
,
222 const struct attribute
*attr
, const char *group
)
227 static inline void sysfs_remove_file_from_group(struct kobject
*kobj
,
228 const struct attribute
*attr
, const char *group
)
232 static inline void sysfs_notify(struct kobject
*kobj
, const char *dir
,
236 static inline void sysfs_notify_dirent(struct sysfs_dirent
*sd
)
240 struct sysfs_dirent
*sysfs_get_dirent(struct sysfs_dirent
*parent_sd
,
241 const unsigned char *name
)
245 static inline struct sysfs_dirent
*sysfs_get(struct sysfs_dirent
*sd
)
249 static inline void sysfs_put(struct sysfs_dirent
*sd
)
253 static inline int __must_check
sysfs_init(void)
258 static inline void sysfs_printk_last_file(void)
262 #endif /* CONFIG_SYSFS */
264 #endif /* _SYSFS_H_ */