configfs.h File Reference

#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/list.h>
#include <linux/kref.h>
#include <linux/mutex.h>
#include <linux/err.h>
#include <linux/atomic.h>

Go to the source code of this file.

Data Structures
struct	config_item
struct	config_item_type
struct	config_group
struct	configfs_attribute
struct	configfs_item_operations
struct	configfs_group_operations
struct	configfs_subsystem

Macros
#define	CONFIGFS_ITEM_NAME_LEN   20
#define	CONFIGFS_ATTR_STRUCT(_item)
#define	__CONFIGFS_ATTR(_name, _mode, _show, _store)
#define	__CONFIGFS_ATTR_RO(_name, _show)
#define	CONFIGFS_ATTR_OPS(_item)

Functions
int	config_item_set_name (struct config_item *, const char *,...)
void	config_item_init (struct config_item *)
void	config_item_init_type_name (struct config_item *item, const char *name, struct config_item_type *type)
struct config_item *	config_item_get (struct config_item *)
void	config_item_put (struct config_item *)
void	config_group_init (struct config_group *group)
void	config_group_init_type_name (struct config_group *group, const char *name, struct config_item_type *type)
struct config_item *	config_group_find_item (struct config_group *, const char *)
int	configfs_register_subsystem (struct configfs_subsystem *subsys)
void	configfs_unregister_subsystem (struct configfs_subsystem *subsys)
int	configfs_depend_item (struct configfs_subsystem *subsys, struct config_item *target)
void	configfs_undepend_item (struct configfs_subsystem *subsys, struct config_item *target)

Macro Definition Documentation

#define __CONFIGFS_ATTR	(		_name,
			_mode,
			_show,
			_store
	)

Value:

{                                   \
    .attr   = {                         \
            .ca_name = __stringify(_name),          \
            .ca_mode = _mode,               \
            .ca_owner = THIS_MODULE,            \
    },                              \
    .show   = _show,                        \
    .store  = _store,                       \
}

Definition at line 153 of file configfs.h.

#define __CONFIGFS_ATTR_RO	(		_name,
			_show
	)

Value:

{                                   \
    .attr   = {                         \
            .ca_name = __stringify(_name),          \
            .ca_mode = 0444,                \
            .ca_owner = THIS_MODULE,            \
    },                              \
    .show   = _show,                        \
}

Definition at line 164 of file configfs.h.

#define CONFIGFS_ATTR_OPS

(

_item

)

Value:

static ssize_t _item##_attr_show(struct config_item *item,      \
                 struct configfs_attribute *attr,   \
                 char *page)                \
{                                   \
	struct _item *_item = to_##_item(item);                \
	struct _item##_attribute *_item##_attr =           \
        container_of(attr, struct _item##_attribute, attr); \
	ssize_t ret = 0;                       \
									\
	if (_item##_attr->show)                        \
        ret = _item##_attr->show(_item, page);          \
    return ret;                         \
}                                   \
static ssize_t _item##_attr_store(struct config_item *item,     \
                  struct configfs_attribute *attr,  \
                  const char *page, size_t count)   \
{                                   \
	struct _item *_item = to_##_item(item);                \
	struct _item##_attribute *_item##_attr =           \
        container_of(attr, struct _item##_attribute, attr); \
	ssize_t ret = -EINVAL;                     \
									\
	if (_item##_attr->store)                   \
        ret = _item##_attr->store(_item, page, count);      \
    return ret;                         \
}

Definition at line 182 of file configfs.h.

#define CONFIGFS_ATTR_STRUCT

(

_item

)

Value:

struct _item##_attribute {                      \
	struct configfs_attribute attr;                    \
	ssize_t (*show)(struct _item *, char *);           \
	ssize_t (*store)(struct _item *, const char *, size_t);        \
}

Definition at line 138 of file configfs.h.

#define CONFIGFS_ITEM_NAME_LEN   20

Definition at line 47 of file configfs.h.

Function Documentation

struct config_item* config_group_find_item ( struct config_group *  , const char *    )

read

Definition at line 195 of file item.c.

void config_group_init

(

struct config_group *

group

)

config_group_init - initialize a group for use : group

Definition at line 180 of file item.c.

void config_group_init_type_name	(	struct config_group *	group,
		const char *	name,
		struct config_item_type *	type
	)

Definition at line 125 of file item.c.

struct config_item* config_item_get ( struct config_item *  )

read

Definition at line 134 of file item.c.

void config_item_init

(

struct config_item *

item

)

config_item_init - initialize item. : item in question.

Definition at line 50 of file item.c.

void config_item_init_type_name	(	struct config_item *	item,
		const char *	name,
		struct config_item_type *	type
	)

Definition at line 115 of file item.c.

void config_item_put

(

struct config_item *

item

)

config_item_put - decrement refcount for item. : item.

Decrement the refcount, and if 0, call config_item_cleanup().

Definition at line 170 of file item.c.

int config_item_set_name	(	struct config_item *	,
		const char *	,
			...
	)

Definition at line 65 of file item.c.

int configfs_depend_item	(	struct configfs_subsystem *	subsys,
		struct config_item *	target
	)

Definition at line 1066 of file dir.c.

int configfs_register_subsystem

(

struct configfs_subsystem *

subsys

)

Definition at line 1666 of file dir.c.

void configfs_undepend_item	(	struct configfs_subsystem *	subsys,
		struct config_item *	target
	)

Definition at line 1140 of file dir.c.

void configfs_unregister_subsystem

(

struct configfs_subsystem *

subsys

)

Definition at line 1719 of file dir.c.