[deliverable/linux.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/kernfs.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 = VERIFY_OCTAL_PERMISSIONS(_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);
};

#ifdef CONFIG_SYSFS

int __must_check sysfs_create_dir_ns(struct kobject *kobj, const void *ns);
void sysfs_remove_dir(struct kobject *kobj);
int __must_check sysfs_rename_dir_ns(struct kobject *kobj, const char *new_name,
				     const void *new_ns);
int __must_check sysfs_move_dir_ns(struct kobject *kobj,
				   struct kobject *new_parent_kobj,
				   const void *new_ns);

int __must_check sysfs_create_file_ns(struct kobject *kobj,
				      const struct attribute *attr,
				      const void *ns);
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_ns(struct kobject *kobj, const struct attribute *attr,
			  const void *ns);
bool sysfs_remove_file_self(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_ns(struct kobject *kobj, struct kobject *target,
			 const char *old_name, const char *new_name,
			 const void *new_ns);

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);

int __must_check sysfs_init(void);

static inline void sysfs_enable_ns(struct kernfs_node *kn)
{
	return kernfs_enable_ns(kn);
}

#else /* CONFIG_SYSFS */

static inline int sysfs_create_dir_ns(struct kobject *kobj, const void *ns)
{
	return 0;
}

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

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

static inline int sysfs_move_dir_ns(struct kobject *kobj,
				    struct kobject *new_parent_kobj,
				    const void *new_ns)
{
	return 0;
}

static inline int sysfs_create_file_ns(struct kobject *kobj,
				       const struct attribute *attr,
				       const void *ns)
{
	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_ns(struct kobject *kobj,
					const struct attribute *attr,
					const void *ns)
{
}

static inline bool sysfs_remove_file_self(struct kobject *kobj,
					  const struct attribute *attr)
{
	return false;
}

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_ns(struct kobject *k, struct kobject *t,
				       const char *old_name,
				       const char *new_name, const void *ns)
{
	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 int __must_check sysfs_init(void)
{
	return 0;
}

static inline void sysfs_enable_ns(struct kernfs_node *kn)
{
}

#endif /* CONFIG_SYSFS */

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

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

static inline int sysfs_rename_link(struct kobject *kobj, struct kobject *target,
				    const char *old_name, const char *new_name)
{
	return sysfs_rename_link_ns(kobj, target, old_name, new_name, NULL);
}

static inline void sysfs_notify_dirent(struct kernfs_node *kn)
{
	kernfs_notify(kn);
}

static inline struct kernfs_node *sysfs_get_dirent(struct kernfs_node *parent,
						   const unsigned char *name)
{
	return kernfs_find_and_get(parent, name);
}

static inline struct kernfs_node *sysfs_get(struct kernfs_node *kn)
{
	kernfs_get(kn);
	return kn;
}

static inline void sysfs_put(struct kernfs_node *kn)
{
	kernfs_put(kn);
}

#endif /* _SYSFS_H_ */
Commit	Line	Data
	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.
	6	* Copyright (c) 2007 SUSE Linux Products GmbH
	7	* Copyright (c) 2007 Tejun Heo <teheo@suse.de>
	8	*
	9	* Please see Documentation/filesystems/sysfs.txt for more information.
	10	*/
	11
	12	#ifndef _SYSFS_H_
	13	#define _SYSFS_H_
	14
	15	#include <linux/kernfs.h>
	16	#include <linux/compiler.h>
	17	#include <linux/errno.h>
	18	#include <linux/list.h>
	19	#include <linux/lockdep.h>
	20	#include <linux/kobject_ns.h>
	21	#include <linux/stat.h>
	22	#include <linux/atomic.h>
	23
	24	struct kobject;
	25	struct module;
	26	struct bin_attribute;
	27	enum kobj_ns_type;
	28
	29	struct attribute {
	30	const char *name;
	31	umode_t mode;
	32	#ifdef CONFIG_DEBUG_LOCK_ALLOC
	33	bool ignore_lockdep:1;
	34	struct lock_class_key *key;
	35	struct lock_class_key skey;
	36	#endif
	37	};
	38
	39	/**
	40	* sysfs_attr_init - initialize a dynamically allocated sysfs attribute
	41	* @attr: struct attribute to initialize
	42	*
	43	* Initialize a dynamically allocated struct attribute so we can
	44	* make lockdep happy. This is a new requirement for attributes
	45	* and initially this is only needed when lockdep is enabled.
	46	* Lockdep gives a nice error when your attribute is added to
	47	* sysfs if you don't have this.
	48	*/
	49	#ifdef CONFIG_DEBUG_LOCK_ALLOC
	50	#define sysfs_attr_init(attr) \
	51	do { \
	52	static struct lock_class_key __key; \
	53	\
	54	(attr)->key = &__key; \
	55	} while (0)
	56	#else
	57	#define sysfs_attr_init(attr) do {} while (0)
	58	#endif
	59
	60	struct attribute_group {
	61	const char *name;
	62	umode_t (is_visible)(struct kobject ,
	63	struct attribute *, int);
	64	struct attribute **attrs;
	65	struct bin_attribute **bin_attrs;
	66	};
	67
	68	/**
	69	* Use these macros to make defining attributes easier. See include/linux/device.h
	70	* for examples..
	71	*/
	72
	73	#define __ATTR(_name, _mode, _show, _store) { \
	74	.attr = {.name = __stringify(_name), \
	75	.mode = VERIFY_OCTAL_PERMISSIONS(_mode) }, \
	76	.show = _show, \
	77	.store = _store, \
	78	}
	79
	80	#define __ATTR_RO(_name) { \
	81	.attr = { .name = __stringify(_name), .mode = S_IRUGO }, \
	82	.show = _name##_show, \
	83	}
	84
	85	#define __ATTR_WO(_name) { \
	86	.attr = { .name = __stringify(_name), .mode = S_IWUSR }, \
	87	.store = _name##_store, \
	88	}
	89
	90	#define __ATTR_RW(_name) __ATTR(_name, (S_IWUSR \| S_IRUGO), \
	91	_name##_show, _name##_store)
	92
	93	#define __ATTR_NULL { .attr = { .name = NULL } }
	94
	95	#ifdef CONFIG_DEBUG_LOCK_ALLOC
	96	#define __ATTR_IGNORE_LOCKDEP(_name, _mode, _show, _store) { \
	97	.attr = {.name = __stringify(_name), .mode = _mode, \
	98	.ignore_lockdep = true }, \
	99	.show = _show, \
	100	.store = _store, \
	101	}
	102	#else
	103	#define __ATTR_IGNORE_LOCKDEP __ATTR
	104	#endif
	105
	106	#define __ATTRIBUTE_GROUPS(_name) \
	107	static const struct attribute_group *_name##_groups[] = { \
	108	&_name##_group, \
	109	NULL, \
	110	}
	111
	112	#define ATTRIBUTE_GROUPS(_name) \
	113	static const struct attribute_group _name##_group = { \
	114	.attrs = _name##_attrs, \
	115	}; \
	116	__ATTRIBUTE_GROUPS(_name)
	117
	118	struct file;
	119	struct vm_area_struct;
	120
	121	struct bin_attribute {
	122	struct attribute attr;
	123	size_t size;
	124	void *private;
	125	ssize_t (read)(struct file , struct kobject , struct bin_attribute ,
	126	char *, loff_t, size_t);
	127	ssize_t (write)(struct file , struct kobject , struct bin_attribute ,
	128	char *, loff_t, size_t);
	129	int (mmap)(struct file , struct kobject , struct bin_attribute attr,
	130	struct vm_area_struct *vma);
	131	};
	132
	133	/**
	134	* sysfs_bin_attr_init - initialize a dynamically allocated bin_attribute
	135	* @attr: struct bin_attribute to initialize
	136	*
	137	* Initialize a dynamically allocated struct bin_attribute so we
	138	* can make lockdep happy. This is a new requirement for
	139	* attributes and initially this is only needed when lockdep is
	140	* enabled. Lockdep gives a nice error when your attribute is
	141	* added to sysfs if you don't have this.
	142	*/
	143	#define sysfs_bin_attr_init(bin_attr) sysfs_attr_init(&(bin_attr)->attr)
	144
	145	/* macros to create static binary attributes easier */
	146	#define __BIN_ATTR(_name, _mode, _read, _write, _size) { \
	147	.attr = { .name = __stringify(_name), .mode = _mode }, \
	148	.read = _read, \
	149	.write = _write, \
	150	.size = _size, \
	151	}
	152
	153	#define __BIN_ATTR_RO(_name, _size) { \
	154	.attr = { .name = __stringify(_name), .mode = S_IRUGO }, \
	155	.read = _name##_read, \
	156	.size = _size, \
	157	}
	158
	159	#define __BIN_ATTR_RW(_name, _size) __BIN_ATTR(_name, \
	160	(S_IWUSR \| S_IRUGO), _name##_read, \
	161	_name##_write, _size)
	162
	163	#define __BIN_ATTR_NULL __ATTR_NULL
	164
	165	#define BIN_ATTR(_name, _mode, _read, _write, _size) \
	166	struct bin_attribute bin_attr_##_name = __BIN_ATTR(_name, _mode, _read, \
	167	_write, _size)
	168
	169	#define BIN_ATTR_RO(_name, _size) \
	170	struct bin_attribute bin_attr_##_name = __BIN_ATTR_RO(_name, _size)
	171
	172	#define BIN_ATTR_RW(_name, _size) \
	173	struct bin_attribute bin_attr_##_name = __BIN_ATTR_RW(_name, _size)
	174
	175	struct sysfs_ops {
	176	ssize_t (show)(struct kobject , struct attribute , char );
	177	ssize_t (store)(struct kobject , struct attribute , const char , size_t);
	178	};
	179
	180	#ifdef CONFIG_SYSFS
	181
	182	int __must_check sysfs_create_dir_ns(struct kobject kobj, const void ns);
	183	void sysfs_remove_dir(struct kobject *kobj);
	184	int __must_check sysfs_rename_dir_ns(struct kobject kobj, const char new_name,
	185	const void *new_ns);
	186	int __must_check sysfs_move_dir_ns(struct kobject *kobj,
	187	struct kobject *new_parent_kobj,
	188	const void *new_ns);
	189
	190	int __must_check sysfs_create_file_ns(struct kobject *kobj,
	191	const struct attribute *attr,
	192	const void *ns);
	193	int __must_check sysfs_create_files(struct kobject *kobj,
	194	const struct attribute **attr);
	195	int __must_check sysfs_chmod_file(struct kobject *kobj,
	196	const struct attribute *attr, umode_t mode);
	197	void sysfs_remove_file_ns(struct kobject kobj, const struct attribute attr,
	198	const void *ns);
	199	bool sysfs_remove_file_self(struct kobject kobj, const struct attribute attr);
	200	void sysfs_remove_files(struct kobject kobj, const struct attribute *attr);
	201
	202	int __must_check sysfs_create_bin_file(struct kobject *kobj,
	203	const struct bin_attribute *attr);
	204	void sysfs_remove_bin_file(struct kobject *kobj,
	205	const struct bin_attribute *attr);
	206
	207	int __must_check sysfs_create_link(struct kobject kobj, struct kobject target,
	208	const char *name);
	209	int __must_check sysfs_create_link_nowarn(struct kobject *kobj,
	210	struct kobject *target,
	211	const char *name);
	212	void sysfs_remove_link(struct kobject kobj, const char name);
	213
	214	int sysfs_rename_link_ns(struct kobject kobj, struct kobject target,
	215	const char old_name, const char new_name,
	216	const void *new_ns);
	217
	218	void sysfs_delete_link(struct kobject dir, struct kobject targ,
	219	const char *name);
	220
	221	int __must_check sysfs_create_group(struct kobject *kobj,
	222	const struct attribute_group *grp);
	223	int __must_check sysfs_create_groups(struct kobject *kobj,
	224	const struct attribute_group **groups);
	225	int sysfs_update_group(struct kobject *kobj,
	226	const struct attribute_group *grp);
	227	void sysfs_remove_group(struct kobject *kobj,
	228	const struct attribute_group *grp);
	229	void sysfs_remove_groups(struct kobject *kobj,
	230	const struct attribute_group **groups);
	231	int sysfs_add_file_to_group(struct kobject *kobj,
	232	const struct attribute attr, const char group);
	233	void sysfs_remove_file_from_group(struct kobject *kobj,
	234	const struct attribute attr, const char group);
	235	int sysfs_merge_group(struct kobject *kobj,
	236	const struct attribute_group *grp);
	237	void sysfs_unmerge_group(struct kobject *kobj,
	238	const struct attribute_group *grp);
	239	int sysfs_add_link_to_group(struct kobject kobj, const char group_name,
	240	struct kobject target, const char link_name);
	241	void sysfs_remove_link_from_group(struct kobject kobj, const char group_name,
	242	const char *link_name);
	243
	244	void sysfs_notify(struct kobject kobj, const char dir, const char *attr);
	245
	246	int __must_check sysfs_init(void);
	247
	248	static inline void sysfs_enable_ns(struct kernfs_node *kn)
	249	{
	250	return kernfs_enable_ns(kn);
	251	}
	252
	253	#else /* CONFIG_SYSFS */
	254
	255	static inline int sysfs_create_dir_ns(struct kobject kobj, const void ns)
	256	{
	257	return 0;
	258	}
	259
	260	static inline void sysfs_remove_dir(struct kobject *kobj)
	261	{
	262	}
	263
	264	static inline int sysfs_rename_dir_ns(struct kobject *kobj,
	265	const char new_name, const void new_ns)
	266	{
	267	return 0;
	268	}
	269
	270	static inline int sysfs_move_dir_ns(struct kobject *kobj,
	271	struct kobject *new_parent_kobj,
	272	const void *new_ns)
	273	{
	274	return 0;
	275	}
	276
	277	static inline int sysfs_create_file_ns(struct kobject *kobj,
	278	const struct attribute *attr,
	279	const void *ns)
	280	{
	281	return 0;
	282	}
	283
	284	static inline int sysfs_create_files(struct kobject *kobj,
	285	const struct attribute **attr)
	286	{
	287	return 0;
	288	}
	289
	290	static inline int sysfs_chmod_file(struct kobject *kobj,
	291	const struct attribute *attr, umode_t mode)
	292	{
	293	return 0;
	294	}
	295
	296	static inline void sysfs_remove_file_ns(struct kobject *kobj,
	297	const struct attribute *attr,
	298	const void *ns)
	299	{
	300	}
	301
	302	static inline bool sysfs_remove_file_self(struct kobject *kobj,
	303	const struct attribute *attr)
	304	{
	305	return false;
	306	}
	307
	308	static inline void sysfs_remove_files(struct kobject *kobj,
	309	const struct attribute **attr)
	310	{
	311	}
	312
	313	static inline int sysfs_create_bin_file(struct kobject *kobj,
	314	const struct bin_attribute *attr)
	315	{
	316	return 0;
	317	}
	318
	319	static inline void sysfs_remove_bin_file(struct kobject *kobj,
	320	const struct bin_attribute *attr)
	321	{
	322	}
	323
	324	static inline int sysfs_create_link(struct kobject *kobj,
	325	struct kobject target, const char name)
	326	{
	327	return 0;
	328	}
	329
	330	static inline int sysfs_create_link_nowarn(struct kobject *kobj,
	331	struct kobject *target,
	332	const char *name)
	333	{
	334	return 0;
	335	}
	336
	337	static inline void sysfs_remove_link(struct kobject kobj, const char name)
	338	{
	339	}
	340
	341	static inline int sysfs_rename_link_ns(struct kobject k, struct kobject t,
	342	const char *old_name,
	343	const char new_name, const void ns)
	344	{
	345	return 0;
	346	}
	347
	348	static inline void sysfs_delete_link(struct kobject k, struct kobject t,
	349	const char *name)
	350	{
	351	}
	352
	353	static inline int sysfs_create_group(struct kobject *kobj,
	354	const struct attribute_group *grp)
	355	{
	356	return 0;
	357	}
	358
	359	static inline int sysfs_create_groups(struct kobject *kobj,
	360	const struct attribute_group **groups)
	361	{
	362	return 0;
	363	}
	364
	365	static inline int sysfs_update_group(struct kobject *kobj,
	366	const struct attribute_group *grp)
	367	{
	368	return 0;
	369	}
	370
	371	static inline void sysfs_remove_group(struct kobject *kobj,
	372	const struct attribute_group *grp)
	373	{
	374	}
	375
	376	static inline void sysfs_remove_groups(struct kobject *kobj,
	377	const struct attribute_group **groups)
	378	{
	379	}
	380
	381	static inline int sysfs_add_file_to_group(struct kobject *kobj,
	382	const struct attribute attr, const char group)
	383	{
	384	return 0;
	385	}
	386
	387	static inline void sysfs_remove_file_from_group(struct kobject *kobj,
	388	const struct attribute attr, const char group)
	389	{
	390	}
	391
	392	static inline int sysfs_merge_group(struct kobject *kobj,
	393	const struct attribute_group *grp)
	394	{
	395	return 0;
	396	}
	397
	398	static inline void sysfs_unmerge_group(struct kobject *kobj,
	399	const struct attribute_group *grp)
	400	{
	401	}
	402
	403	static inline int sysfs_add_link_to_group(struct kobject *kobj,
	404	const char group_name, struct kobject target,
	405	const char *link_name)
	406	{
	407	return 0;
	408	}
	409
	410	static inline void sysfs_remove_link_from_group(struct kobject *kobj,
	411	const char group_name, const char link_name)
	412	{
	413	}
	414
	415	static inline void sysfs_notify(struct kobject kobj, const char dir,
	416	const char *attr)
	417	{
	418	}
	419
	420	static inline int __must_check sysfs_init(void)
	421	{
	422	return 0;
	423	}
	424
	425	static inline void sysfs_enable_ns(struct kernfs_node *kn)
	426	{
	427	}
	428
	429	#endif /* CONFIG_SYSFS */
	430
	431	static inline int __must_check sysfs_create_file(struct kobject *kobj,
	432	const struct attribute *attr)
	433	{
	434	return sysfs_create_file_ns(kobj, attr, NULL);
	435	}
	436
	437	static inline void sysfs_remove_file(struct kobject *kobj,
	438	const struct attribute *attr)
	439	{
	440	sysfs_remove_file_ns(kobj, attr, NULL);
	441	}
	442
	443	static inline int sysfs_rename_link(struct kobject kobj, struct kobject target,
	444	const char old_name, const char new_name)
	445	{
	446	return sysfs_rename_link_ns(kobj, target, old_name, new_name, NULL);
	447	}
	448
	449	static inline void sysfs_notify_dirent(struct kernfs_node *kn)
	450	{
	451	kernfs_notify(kn);
	452	}
	453
	454	static inline struct kernfs_node sysfs_get_dirent(struct kernfs_node parent,
	455	const unsigned char *name)
	456	{
	457	return kernfs_find_and_get(parent, name);
	458	}
	459
	460	static inline struct kernfs_node sysfs_get(struct kernfs_node kn)
	461	{
	462	kernfs_get(kn);
	463	return kn;
	464	}
	465
	466	static inline void sysfs_put(struct kernfs_node *kn)
	467	{
	468	kernfs_put(kn);
	469	}
	470
	471	#endif /* _SYSFS_H_ */