[mirror_ubuntu-bionic-kernel.git] / include / linux / sysfs.h

/*
 * sysfs.h - definitions for the device driver filesystem
 *
 * Copyright (c) 2001,2002 Patrick Mochel
 * Copyright (c) 2004 Silicon Graphics, Inc.
 * Copyright (c) 2007 SUSE Linux Products GmbH
 * Copyright (c) 2007 Tejun Heo <teheo@suse.de>
 *
 * Please see Documentation/filesystems/sysfs.txt for more information.
 */

#ifndef _SYSFS_H_
#define _SYSFS_H_

#include <linux/compiler.h>
#include <linux/errno.h>
#include <linux/list.h>
#include <linux/lockdep.h>
#include <linux/kobject_ns.h>
#include <linux/stat.h>
#include <linux/atomic.h>

struct kobject;
struct module;
struct bin_attribute;
enum kobj_ns_type;

struct attribute {
	const char		*name;
	umode_t			mode;
#ifdef CONFIG_DEBUG_LOCK_ALLOC
	bool			ignore_lockdep:1;
	struct lock_class_key	*key;
	struct lock_class_key	skey;
#endif
};

/**
 *	sysfs_attr_init - initialize a dynamically allocated sysfs attribute
 *	@attr: struct attribute to initialize
 *
 *	Initialize a dynamically allocated struct attribute so we can
 *	make lockdep happy.  This is a new requirement for attributes
 *	and initially this is only needed when lockdep is enabled.
 *	Lockdep gives a nice error when your attribute is added to
 *	sysfs if you don't have this.
 */
#ifdef CONFIG_DEBUG_LOCK_ALLOC
#define sysfs_attr_init(attr)				\
do {							\
	static struct lock_class_key __key;		\
							\
	(attr)->key = &__key;				\
} while (0)
#else
#define sysfs_attr_init(attr) do {} while (0)
#endif

struct attribute_group {
	const char		*name;
	umode_t			(*is_visible)(struct kobject *,
					      struct attribute *, int);
	struct attribute	**attrs;
	struct bin_attribute	**bin_attrs;
};

/**
 * Use these macros to make defining attributes easier. See include/linux/device.h
 * for examples..
 */

#define __ATTR(_name, _mode, _show, _store) {				\
	.attr = {.name = __stringify(_name), .mode = _mode },		\
	.show	= _show,						\
	.store	= _store,						\
}

#define __ATTR_RO(_name) {						\
	.attr	= { .name = __stringify(_name), .mode = S_IRUGO },	\
	.show	= _name##_show,						\
}

#define __ATTR_WO(_name) {						\
	.attr	= { .name = __stringify(_name), .mode = S_IWUSR },	\
	.store	= _name##_store,					\
}

#define __ATTR_RW(_name) __ATTR(_name, (S_IWUSR | S_IRUGO),		\
			 _name##_show, _name##_store)

#define __ATTR_NULL { .attr = { .name = NULL } }

#ifdef CONFIG_DEBUG_LOCK_ALLOC
#define __ATTR_IGNORE_LOCKDEP(_name, _mode, _show, _store) {	\
	.attr = {.name = __stringify(_name), .mode = _mode,	\
			.ignore_lockdep = true },		\
	.show		= _show,				\
	.store		= _store,				\
}
#else
#define __ATTR_IGNORE_LOCKDEP	__ATTR
#endif

#define __ATTRIBUTE_GROUPS(_name)				\
static const struct attribute_group *_name##_groups[] = {	\
	&_name##_group,						\
	NULL,							\
}

#define ATTRIBUTE_GROUPS(_name)					\
static const struct attribute_group _name##_group = {		\
	.attrs = _name##_attrs,					\
};								\
__ATTRIBUTE_GROUPS(_name)

struct file;
struct vm_area_struct;

struct bin_attribute {
	struct attribute	attr;
	size_t			size;
	void			*private;
	ssize_t (*read)(struct file *, struct kobject *, struct bin_attribute *,
			char *, loff_t, size_t);
	ssize_t (*write)(struct file *, struct kobject *, struct bin_attribute *,
			 char *, loff_t, size_t);
	int (*mmap)(struct file *, struct kobject *, struct bin_attribute *attr,
		    struct vm_area_struct *vma);
};

/**
 *	sysfs_bin_attr_init - initialize a dynamically allocated bin_attribute
 *	@attr: struct bin_attribute to initialize
 *
 *	Initialize a dynamically allocated struct bin_attribute so we
 *	can make lockdep happy.  This is a new requirement for
 *	attributes and initially this is only needed when lockdep is
 *	enabled.  Lockdep gives a nice error when your attribute is
 *	added to sysfs if you don't have this.
 */
#define sysfs_bin_attr_init(bin_attr) sysfs_attr_init(&(bin_attr)->attr)

/* macros to create static binary attributes easier */
#define __BIN_ATTR(_name, _mode, _read, _write, _size) {		\
	.attr = { .name = __stringify(_name), .mode = _mode },		\
	.read	= _read,						\
	.write	= _write,						\
	.size	= _size,						\
}

#define __BIN_ATTR_RO(_name, _size) {					\
	.attr	= { .name = __stringify(_name), .mode = S_IRUGO },	\
	.read	= _name##_read,						\
	.size	= _size,						\
}

#define __BIN_ATTR_RW(_name, _size) __BIN_ATTR(_name,			\
				   (S_IWUSR | S_IRUGO), _name##_read,	\
				   _name##_write, _size)

#define __BIN_ATTR_NULL __ATTR_NULL

#define BIN_ATTR(_name, _mode, _read, _write, _size)			\
struct bin_attribute bin_attr_##_name = __BIN_ATTR(_name, _mode, _read,	\
					_write, _size)

#define BIN_ATTR_RO(_name, _size)					\
struct bin_attribute bin_attr_##_name = __BIN_ATTR_RO(_name, _size)

#define BIN_ATTR_RW(_name, _size)					\
struct bin_attribute bin_attr_##_name = __BIN_ATTR_RW(_name, _size)

struct sysfs_ops {
	ssize_t	(*show)(struct kobject *, struct attribute *, char *);
	ssize_t	(*store)(struct kobject *, struct attribute *, const char *, size_t);
	const void *(*namespace)(struct kobject *, const struct attribute *);
};

struct sysfs_dirent;

#ifdef CONFIG_SYSFS

int sysfs_schedule_callback(struct kobject *kobj, void (*func)(void *),
			    void *data, struct module *owner);

int __must_check sysfs_create_dir(struct kobject *kobj);
void sysfs_remove_dir(struct kobject *kobj);
int __must_check sysfs_rename_dir(struct kobject *kobj, const char *new_name);
int __must_check sysfs_move_dir(struct kobject *kobj,
				struct kobject *new_parent_kobj);

int __must_check sysfs_create_file(struct kobject *kobj,
				   const struct attribute *attr);
int __must_check sysfs_create_files(struct kobject *kobj,
				   const struct attribute **attr);
int __must_check sysfs_chmod_file(struct kobject *kobj,
				  const struct attribute *attr, umode_t mode);
void sysfs_remove_file(struct kobject *kobj, const struct attribute *attr);
void sysfs_remove_files(struct kobject *kobj, const struct attribute **attr);

int __must_check sysfs_create_bin_file(struct kobject *kobj,
				       const struct bin_attribute *attr);
void sysfs_remove_bin_file(struct kobject *kobj,
			   const struct bin_attribute *attr);

int __must_check sysfs_create_link(struct kobject *kobj, struct kobject *target,
				   const char *name);
int __must_check sysfs_create_link_nowarn(struct kobject *kobj,
					  struct kobject *target,
					  const char *name);
void sysfs_remove_link(struct kobject *kobj, const char *name);

int sysfs_rename_link(struct kobject *kobj, struct kobject *target,
			const char *old_name, const char *new_name);

void sysfs_delete_link(struct kobject *dir, struct kobject *targ,
			const char *name);

int __must_check sysfs_create_group(struct kobject *kobj,
				    const struct attribute_group *grp);
int __must_check sysfs_create_groups(struct kobject *kobj,
				     const struct attribute_group **groups);
int sysfs_update_group(struct kobject *kobj,
		       const struct attribute_group *grp);
void sysfs_remove_group(struct kobject *kobj,
			const struct attribute_group *grp);
void sysfs_remove_groups(struct kobject *kobj,
			 const struct attribute_group **groups);
int sysfs_add_file_to_group(struct kobject *kobj,
			const struct attribute *attr, const char *group);
void sysfs_remove_file_from_group(struct kobject *kobj,
			const struct attribute *attr, const char *group);
int sysfs_merge_group(struct kobject *kobj,
		       const struct attribute_group *grp);
void sysfs_unmerge_group(struct kobject *kobj,
		       const struct attribute_group *grp);
int sysfs_add_link_to_group(struct kobject *kobj, const char *group_name,
			    struct kobject *target, const char *link_name);
void sysfs_remove_link_from_group(struct kobject *kobj, const char *group_name,
				  const char *link_name);

void sysfs_notify(struct kobject *kobj, const char *dir, const char *attr);
void sysfs_notify_dirent(struct sysfs_dirent *sd);
struct sysfs_dirent *sysfs_get_dirent(struct sysfs_dirent *parent_sd,
				      const void *ns,
				      const unsigned char *name);
struct sysfs_dirent *sysfs_get(struct sysfs_dirent *sd);
void sysfs_put(struct sysfs_dirent *sd);

int __must_check sysfs_init(void);

#else /* CONFIG_SYSFS */

static inline int sysfs_schedule_callback(struct kobject *kobj,
		void (*func)(void *), void *data, struct module *owner)
{
	return -ENOSYS;
}

static inline int sysfs_create_dir(struct kobject *kobj)
{
	return 0;
}

static inline void sysfs_remove_dir(struct kobject *kobj)
{
}

static inline int sysfs_rename_dir(struct kobject *kobj, const char *new_name)
{
	return 0;
}

static inline int sysfs_move_dir(struct kobject *kobj,
				 struct kobject *new_parent_kobj)
{
	return 0;
}

static inline int sysfs_create_file(struct kobject *kobj,
				    const struct attribute *attr)
{
	return 0;
}

static inline int sysfs_create_files(struct kobject *kobj,
				    const struct attribute **attr)
{
	return 0;
}

static inline int sysfs_chmod_file(struct kobject *kobj,
				   const struct attribute *attr, umode_t mode)
{
	return 0;
}

static inline void sysfs_remove_file(struct kobject *kobj,
				     const struct attribute *attr)
{
}

static inline void sysfs_remove_files(struct kobject *kobj,
				     const struct attribute **attr)
{
}

static inline int sysfs_create_bin_file(struct kobject *kobj,
					const struct bin_attribute *attr)
{
	return 0;
}

static inline void sysfs_remove_bin_file(struct kobject *kobj,
					 const struct bin_attribute *attr)
{
}

static inline int sysfs_create_link(struct kobject *kobj,
				    struct kobject *target, const char *name)
{
	return 0;
}

static inline int sysfs_create_link_nowarn(struct kobject *kobj,
					   struct kobject *target,
					   const char *name)
{
	return 0;
}

static inline void sysfs_remove_link(struct kobject *kobj, const char *name)
{
}

static inline int sysfs_rename_link(struct kobject *k, struct kobject *t,
				    const char *old_name, const char *new_name)
{
	return 0;
}

static inline void sysfs_delete_link(struct kobject *k, struct kobject *t,
				     const char *name)
{
}

static inline int sysfs_create_group(struct kobject *kobj,
				     const struct attribute_group *grp)
{
	return 0;
}

static inline int sysfs_create_groups(struct kobject *kobj,
				      const struct attribute_group **groups)
{
	return 0;
}

static inline int sysfs_update_group(struct kobject *kobj,
				const struct attribute_group *grp)
{
	return 0;
}

static inline void sysfs_remove_group(struct kobject *kobj,
				      const struct attribute_group *grp)
{
}

static inline void sysfs_remove_groups(struct kobject *kobj,
				       const struct attribute_group **groups)
{
}

static inline int sysfs_add_file_to_group(struct kobject *kobj,
		const struct attribute *attr, const char *group)
{
	return 0;
}

static inline void sysfs_remove_file_from_group(struct kobject *kobj,
		const struct attribute *attr, const char *group)
{
}

static inline int sysfs_merge_group(struct kobject *kobj,
		       const struct attribute_group *grp)
{
	return 0;
}

static inline void sysfs_unmerge_group(struct kobject *kobj,
		       const struct attribute_group *grp)
{
}

static inline int sysfs_add_link_to_group(struct kobject *kobj,
		const char *group_name, struct kobject *target,
		const char *link_name)
{
	return 0;
}

static inline void sysfs_remove_link_from_group(struct kobject *kobj,
		const char *group_name, const char *link_name)
{
}

static inline void sysfs_notify(struct kobject *kobj, const char *dir,
				const char *attr)
{
}
static inline void sysfs_notify_dirent(struct sysfs_dirent *sd)
{
}
static inline
struct sysfs_dirent *sysfs_get_dirent(struct sysfs_dirent *parent_sd,
				      const void *ns,
				      const unsigned char *name)
{
	return NULL;
}
static inline struct sysfs_dirent *sysfs_get(struct sysfs_dirent *sd)
{
	return NULL;
}
static inline void sysfs_put(struct sysfs_dirent *sd)
{
}

static inline int __must_check sysfs_init(void)
{
	return 0;
}

#endif /* CONFIG_SYSFS */

#endif /* _SYSFS_H_ */
Commit	Line	Data
1da177e4 LT	1	/*
	2	* sysfs.h - definitions for the device driver filesystem
	3	*
	4	* Copyright (c) 2001,2002 Patrick Mochel
	5	* Copyright (c) 2004 Silicon Graphics, Inc.
6d66f5cd TH	6	* Copyright (c) 2007 SUSE Linux Products GmbH
6d66f5cd TH	7	* Copyright (c) 2007 Tejun Heo <teheo@suse.de>
1da177e4 LT	8	*
	9	* Please see Documentation/filesystems/sysfs.txt for more information.
	10	*/
	11
	12	#ifndef _SYSFS_H_
	13	#define _SYSFS_H_
	14
4a7fb636	15	#include <linux/compiler.h>
5851fadc	16	#include <linux/errno.h>
bf0acc33	17	#include <linux/list.h>
6992f533	18	#include <linux/lockdep.h>
8488a38f	19	#include <linux/kobject_ns.h>
3493f69f	20	#include <linux/stat.h>
60063497	21	#include <linux/atomic.h>
1da177e4 LT	22
	23	struct kobject;
	24	struct module;
6ab9cea1	25	struct bin_attribute;
3ff195b0	26	enum kobj_ns_type;
1da177e4 LT	27
1da177e4 LT	28	struct attribute {
59f69015	29	const char *name;
9104e427	30	umode_t mode;
6992f533	31	#ifdef CONFIG_DEBUG_LOCK_ALLOC
356c05d5	32	bool ignore_lockdep:1;
6992f533 EB	33	struct lock_class_key *key;
	34	struct lock_class_key skey;
	35	#endif
1da177e4 LT	36	};
1da177e4 LT	37
35960258 EB	38	/**
	39	* sysfs_attr_init - initialize a dynamically allocated sysfs attribute
	40	* @attr: struct attribute to initialize
	41	*
	42	* Initialize a dynamically allocated struct attribute so we can
	43	* make lockdep happy. This is a new requirement for attributes
	44	* and initially this is only needed when lockdep is enabled.
	45	* Lockdep gives a nice error when your attribute is added to
	46	* sysfs if you don't have this.
	47	*/
6992f533 EB	48	#ifdef CONFIG_DEBUG_LOCK_ALLOC
	49	#define sysfs_attr_init(attr) \
	50	do { \
	51	static struct lock_class_key __key; \
	52	\
	53	(attr)->key = &__key; \
5da5c9c8	54	} while (0)
6992f533	55	#else
5da5c9c8	56	#define sysfs_attr_init(attr) do {} while (0)
6992f533 EB	57	#endif
6992f533 EB	58
1da177e4	59	struct attribute_group {
59f69015	60	const char *name;
587a1f16	61	umode_t (is_visible)(struct kobject ,
d4acd722	62	struct attribute *, int);
59f69015	63	struct attribute **attrs;
6ab9cea1	64	struct bin_attribute **bin_attrs;
1da177e4 LT	65	};
1da177e4 LT	66
1da177e4 LT	67	/**
	68	* Use these macros to make defining attributes easier. See include/linux/device.h
	69	* for examples..
	70	*/
	71
5da5c9c8	72	#define __ATTR(_name, _mode, _show, _store) { \
aa01aa3c OS	73	.attr = {.name = __stringify(_name), .mode = _mode }, \
	74	.show = _show, \
	75	.store = _store, \
1da177e4 LT	76	}
1da177e4 LT	77
aa01aa3c OS	78	#define __ATTR_RO(_name) { \
	79	.attr = { .name = __stringify(_name), .mode = S_IRUGO }, \
	80	.show = _name##_show, \
1da177e4 LT	81	}
1da177e4 LT	82
a65fcce7 GKH	83	#define __ATTR_WO(_name) { \
	84	.attr = { .name = __stringify(_name), .mode = S_IWUSR }, \
	85	.store = _name##_store, \
	86	}
	87
aa01aa3c OS	88	#define __ATTR_RW(_name) __ATTR(_name, (S_IWUSR \| S_IRUGO), \
aa01aa3c OS	89	_name##_show, _name##_store)
b9b32597	90
1da177e4	91	#define __ATTR_NULL { .attr = { .name = NULL } }
356c05d5 AS	92
	93	#ifdef CONFIG_DEBUG_LOCK_ALLOC
	94	#define __ATTR_IGNORE_LOCKDEP(_name, _mode, _show, _store) { \
	95	.attr = {.name = __stringify(_name), .mode = _mode, \
	96	.ignore_lockdep = true }, \
	97	.show = _show, \
	98	.store = _store, \
	99	}
	100	#else
	101	#define __ATTR_IGNORE_LOCKDEP __ATTR
	102	#endif
1da177e4	103
3493f69f OS	104	#define __ATTRIBUTE_GROUPS(_name) \
	105	static const struct attribute_group *_name##_groups[] = { \
	106	&_name##_group, \
f2f37f58 GKH	107	NULL, \
	108	}
	109
3493f69f OS	110	#define ATTRIBUTE_GROUPS(_name) \
	111	static const struct attribute_group _name##_group = { \
	112	.attrs = _name##_attrs, \
	113	}; \
	114	__ATTRIBUTE_GROUPS(_name)
	115
2c3c8bea	116	struct file;
1da177e4 LT	117	struct vm_area_struct;
	118
	119	struct bin_attribute {
	120	struct attribute attr;
	121	size_t size;
	122	void *private;
2c3c8bea	123	ssize_t (read)(struct file , struct kobject , struct bin_attribute ,
91a69029	124	char *, loff_t, size_t);
5da5c9c8	125	ssize_t (write)(struct file , struct kobject , struct bin_attribute ,
91a69029	126	char *, loff_t, size_t);
2c3c8bea	127	int (mmap)(struct file , struct kobject , struct bin_attribute attr,
1da177e4 LT	128	struct vm_area_struct *vma);
	129	};
	130
35960258 EB	131	/**
	132	* sysfs_bin_attr_init - initialize a dynamically allocated bin_attribute
	133	* @attr: struct bin_attribute to initialize
	134	*
	135	* Initialize a dynamically allocated struct bin_attribute so we
	136	* can make lockdep happy. This is a new requirement for
	137	* attributes and initially this is only needed when lockdep is
	138	* enabled. Lockdep gives a nice error when your attribute is
	139	* added to sysfs if you don't have this.
	140	*/
62e877b8	141	#define sysfs_bin_attr_init(bin_attr) sysfs_attr_init(&(bin_attr)->attr)
6992f533	142
3493f69f OS	143	/* macros to create static binary attributes easier */
	144	#define __BIN_ATTR(_name, _mode, _read, _write, _size) { \
	145	.attr = { .name = __stringify(_name), .mode = _mode }, \
	146	.read = _read, \
	147	.write = _write, \
	148	.size = _size, \
	149	}
	150
	151	#define __BIN_ATTR_RO(_name, _size) { \
	152	.attr = { .name = __stringify(_name), .mode = S_IRUGO }, \
	153	.read = _name##_read, \
	154	.size = _size, \
e4b63603 GKH	155	}
e4b63603 GKH	156
3493f69f OS	157	#define __BIN_ATTR_RW(_name, _size) __BIN_ATTR(_name, \
3493f69f OS	158	(S_IWUSR \| S_IRUGO), _name##_read, \
68531526	159	_name##_write, _size)
3493f69f OS	160
	161	#define __BIN_ATTR_NULL __ATTR_NULL
	162
	163	#define BIN_ATTR(_name, _mode, _read, _write, _size) \
	164	struct bin_attribute bin_attr_##_name = __BIN_ATTR(_name, _mode, _read, \
	165	_write, _size)
	166
	167	#define BIN_ATTR_RO(_name, _size) \
	168	struct bin_attribute bin_attr_##_name = __BIN_ATTR_RO(_name, _size)
	169
	170	#define BIN_ATTR_RW(_name, _size) \
	171	struct bin_attribute bin_attr_##_name = __BIN_ATTR_RW(_name, _size)
	172
1da177e4	173	struct sysfs_ops {
5da5c9c8 GKH	174	ssize_t (show)(struct kobject , struct attribute , char );
5da5c9c8 GKH	175	ssize_t (store)(struct kobject , struct attribute , const char , size_t);
487505c2	176	const void (namespace)(struct kobject , const struct attribute );
1da177e4 LT	177	};
1da177e4 LT	178
f1282c84 NB	179	struct sysfs_dirent;
f1282c84 NB	180
1da177e4 LT	181	#ifdef CONFIG_SYSFS
1da177e4 LT	182
59f69015 TH	183	int sysfs_schedule_callback(struct kobject kobj, void (func)(void *),
59f69015 TH	184	void data, struct module owner);
1da177e4	185
59f69015 TH	186	int __must_check sysfs_create_dir(struct kobject *kobj);
	187	void sysfs_remove_dir(struct kobject *kobj);
	188	int __must_check sysfs_rename_dir(struct kobject kobj, const char new_name);
	189	int __must_check sysfs_move_dir(struct kobject *kobj,
	190	struct kobject *new_parent_kobj);
31e5abe9	191
59f69015 TH	192	int __must_check sysfs_create_file(struct kobject *kobj,
59f69015 TH	193	const struct attribute *attr);
1c205ae1 AK	194	int __must_check sysfs_create_files(struct kobject *kobj,
1c205ae1 AK	195	const struct attribute **attr);
49c19400	196	int __must_check sysfs_chmod_file(struct kobject *kobj,
48176a97	197	const struct attribute *attr, umode_t mode);
59f69015	198	void sysfs_remove_file(struct kobject kobj, const struct attribute attr);
1c205ae1	199	void sysfs_remove_files(struct kobject kobj, const struct attribute *attr);
1da177e4	200
4a7fb636	201	int __must_check sysfs_create_bin_file(struct kobject *kobj,
66ecb92b PC	202	const struct bin_attribute *attr);
	203	void sysfs_remove_bin_file(struct kobject *kobj,
	204	const struct bin_attribute *attr);
1da177e4	205
59f69015 TH	206	int __must_check sysfs_create_link(struct kobject kobj, struct kobject target,
59f69015 TH	207	const char *name);
36ce6dad CH	208	int __must_check sysfs_create_link_nowarn(struct kobject *kobj,
	209	struct kobject *target,
	210	const char *name);
59f69015 TH	211	void sysfs_remove_link(struct kobject kobj, const char name);
59f69015 TH	212
7cb32942 EB	213	int sysfs_rename_link(struct kobject kobj, struct kobject target,
	214	const char old_name, const char new_name);
	215
746edb7a EB	216	void sysfs_delete_link(struct kobject dir, struct kobject targ,
	217	const char *name);
	218
59f69015 TH	219	int __must_check sysfs_create_group(struct kobject *kobj,
59f69015 TH	220	const struct attribute_group *grp);
3e9b2bae GKH	221	int __must_check sysfs_create_groups(struct kobject *kobj,
3e9b2bae GKH	222	const struct attribute_group **groups);
0f423895 JB	223	int sysfs_update_group(struct kobject *kobj,
0f423895 JB	224	const struct attribute_group *grp);
59f69015 TH	225	void sysfs_remove_group(struct kobject *kobj,
59f69015 TH	226	const struct attribute_group *grp);
3e9b2bae GKH	227	void sysfs_remove_groups(struct kobject *kobj,
3e9b2bae GKH	228	const struct attribute_group **groups);
dfa87c82	229	int sysfs_add_file_to_group(struct kobject *kobj,
59f69015	230	const struct attribute attr, const char group);
dfa87c82	231	void sysfs_remove_file_from_group(struct kobject *kobj,
59f69015	232	const struct attribute attr, const char group);
69d44ffb AS	233	int sysfs_merge_group(struct kobject *kobj,
	234	const struct attribute_group *grp);
	235	void sysfs_unmerge_group(struct kobject *kobj,
	236	const struct attribute_group *grp);
0bb8f3d6 RW	237	int sysfs_add_link_to_group(struct kobject kobj, const char group_name,
	238	struct kobject target, const char link_name);
	239	void sysfs_remove_link_from_group(struct kobject kobj, const char group_name,
	240	const char *link_name);
dfa87c82	241
8c0e3998	242	void sysfs_notify(struct kobject kobj, const char dir, const char *attr);
f1282c84 NB	243	void sysfs_notify_dirent(struct sysfs_dirent *sd);
f1282c84 NB	244	struct sysfs_dirent sysfs_get_dirent(struct sysfs_dirent parent_sd,
3ff195b0	245	const void *ns,
f1282c84 NB	246	const unsigned char *name);
	247	struct sysfs_dirent sysfs_get(struct sysfs_dirent sd);
	248	void sysfs_put(struct sysfs_dirent *sd);
3ff195b0	249
f1282c84	250	int __must_check sysfs_init(void);
f20a9ead	251
1da177e4 LT	252	#else /* CONFIG_SYSFS */
1da177e4 LT	253
d9a9cdfb	254	static inline int sysfs_schedule_callback(struct kobject *kobj,
523ded71	255	void (func)(void ), void data, struct module owner)
d9a9cdfb AS	256	{
	257	return -ENOSYS;
	258	}
	259
59f69015	260	static inline int sysfs_create_dir(struct kobject *kobj)
1da177e4 LT	261	{
	262	return 0;
	263	}
	264
59f69015	265	static inline void sysfs_remove_dir(struct kobject *kobj)
1da177e4	266	{
1da177e4 LT	267	}
1da177e4 LT	268
59f69015	269	static inline int sysfs_rename_dir(struct kobject kobj, const char new_name)
1da177e4	270	{
0b4a4fea	271	return 0;
1da177e4 LT	272	}
1da177e4 LT	273
59f69015 TH	274	static inline int sysfs_move_dir(struct kobject *kobj,
59f69015 TH	275	struct kobject *new_parent_kobj)
8a82472f CH	276	{
	277	return 0;
	278	}
	279
59f69015 TH	280	static inline int sysfs_create_file(struct kobject *kobj,
59f69015 TH	281	const struct attribute *attr)
1da177e4 LT	282	{
	283	return 0;
	284	}
	285
1c205ae1 AK	286	static inline int sysfs_create_files(struct kobject *kobj,
	287	const struct attribute **attr)
	288	{
	289	return 0;
	290	}
	291
59f69015	292	static inline int sysfs_chmod_file(struct kobject *kobj,
48176a97	293	const struct attribute *attr, umode_t mode)
31e5abe9 KS	294	{
	295	return 0;
	296	}
1da177e4	297
59f69015 TH	298	static inline void sysfs_remove_file(struct kobject *kobj,
59f69015 TH	299	const struct attribute *attr)
1da177e4	300	{
1da177e4 LT	301	}
1da177e4 LT	302
1c205ae1 AK	303	static inline void sysfs_remove_files(struct kobject *kobj,
	304	const struct attribute **attr)
	305	{
	306	}
	307
59f69015	308	static inline int sysfs_create_bin_file(struct kobject *kobj,
66ecb92b	309	const struct bin_attribute *attr)
1da177e4 LT	310	{
	311	return 0;
	312	}
	313
3612e06b	314	static inline void sysfs_remove_bin_file(struct kobject *kobj,
66ecb92b	315	const struct bin_attribute *attr)
1da177e4	316	{
1da177e4 LT	317	}
1da177e4 LT	318
59f69015 TH	319	static inline int sysfs_create_link(struct kobject *kobj,
59f69015 TH	320	struct kobject target, const char name)
1da177e4 LT	321	{
	322	return 0;
	323	}
	324
36ce6dad CH	325	static inline int sysfs_create_link_nowarn(struct kobject *kobj,
	326	struct kobject *target,
	327	const char *name)
	328	{
	329	return 0;
	330	}
	331
59f69015	332	static inline void sysfs_remove_link(struct kobject kobj, const char name)
1da177e4	333	{
1da177e4 LT	334	}
1da177e4 LT	335
7cb32942 EB	336	static inline int sysfs_rename_link(struct kobject k, struct kobject t,
	337	const char old_name, const char new_name)
	338	{
	339	return 0;
	340	}
	341
746edb7a EB	342	static inline void sysfs_delete_link(struct kobject k, struct kobject t,
	343	const char *name)
	344	{
	345	}
	346
59f69015 TH	347	static inline int sysfs_create_group(struct kobject *kobj,
59f69015 TH	348	const struct attribute_group *grp)
1da177e4 LT	349	{
	350	return 0;
	351	}
	352
f7998780 GKH	353	static inline int sysfs_create_groups(struct kobject *kobj,
	354	const struct attribute_group **groups)
	355	{
574979c6	356	return 0;
f7998780 GKH	357	}
f7998780 GKH	358
1cbfb7a5 RD	359	static inline int sysfs_update_group(struct kobject *kobj,
	360	const struct attribute_group *grp)
	361	{
	362	return 0;
	363	}
	364
59f69015 TH	365	static inline void sysfs_remove_group(struct kobject *kobj,
59f69015 TH	366	const struct attribute_group *grp)
1da177e4	367	{
1da177e4 LT	368	}
1da177e4 LT	369
f7998780 GKH	370	static inline void sysfs_remove_groups(struct kobject *kobj,
	371	const struct attribute_group **groups)
	372	{
	373	}
	374
dfa87c82 AS	375	static inline int sysfs_add_file_to_group(struct kobject *kobj,
	376	const struct attribute attr, const char group)
	377	{
	378	return 0;
	379	}
	380
	381	static inline void sysfs_remove_file_from_group(struct kobject *kobj,
d701d8a3	382	const struct attribute attr, const char group)
dfa87c82	383	{
dfa87c82 AS	384	}
dfa87c82 AS	385
69d44ffb AS	386	static inline int sysfs_merge_group(struct kobject *kobj,
	387	const struct attribute_group *grp)
	388	{
	389	return 0;
	390	}
	391
	392	static inline void sysfs_unmerge_group(struct kobject *kobj,
	393	const struct attribute_group *grp)
	394	{
	395	}
	396
0bb8f3d6 RW	397	static inline int sysfs_add_link_to_group(struct kobject *kobj,
	398	const char group_name, struct kobject target,
	399	const char *link_name)
	400	{
	401	return 0;
	402	}
	403
	404	static inline void sysfs_remove_link_from_group(struct kobject *kobj,
	405	const char group_name, const char link_name)
	406	{
	407	}
	408
8c0e3998 TP	409	static inline void sysfs_notify(struct kobject kobj, const char dir,
8c0e3998 TP	410	const char *attr)
4508a7a7 N	411	{
4508a7a7 N	412	}
f1282c84 NB	413	static inline void sysfs_notify_dirent(struct sysfs_dirent *sd)
	414	{
	415	}
	416	static inline
	417	struct sysfs_dirent sysfs_get_dirent(struct sysfs_dirent parent_sd,
3ff195b0	418	const void *ns,
f1282c84 NB	419	const unsigned char *name)
	420	{
	421	return NULL;
	422	}
	423	static inline struct sysfs_dirent sysfs_get(struct sysfs_dirent sd)
	424	{
	425	return NULL;
	426	}
	427	static inline void sysfs_put(struct sysfs_dirent *sd)
	428	{
	429	}
4508a7a7	430
f20a9ead AM	431	static inline int __must_check sysfs_init(void)
	432	{
	433	return 0;
	434	}
	435
1da177e4 LT	436	#endif /* CONFIG_SYSFS */
	437
	438	#endif /* _SYSFS_H_ */