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/*
* kobject.h - generic kernel object infrastructure.
*
*/
#ifndef _KOBJECT_H_
#define _KOBJECT_H_
#include <linux/types.h>
#include <linux/list.h>
#include <linux/sysfs.h>
#include <linux/rwsem.h>
#include <asm/atomic.h>
#define KOBJ_NAME_LEN 16
struct kobject {
char name[KOBJ_NAME_LEN];
atomic_t refcount;
struct list_head entry;
struct kobject * parent;
struct subsystem * subsys;
struct dentry * dentry;
};
extern void kobject_init(struct kobject *);
extern void kobject_cleanup(struct kobject *);
extern int kobject_add(struct kobject *);
extern void kobject_del(struct kobject *);
extern int kobject_register(struct kobject *);
extern void kobject_unregister(struct kobject *);
extern struct kobject * kobject_get(struct kobject *);
extern void kobject_put(struct kobject *);
struct subsystem {
struct kobject kobj;
struct list_head list;
struct rw_semaphore rwsem;
struct subsystem * parent;
void (*release)(struct kobject *);
struct sysfs_ops * sysfs_ops;
struct attribute ** default_attrs;
};
extern void subsystem_init(struct subsystem *);
extern int subsystem_register(struct subsystem *);
extern void subsystem_unregister(struct subsystem *);
static inline struct subsystem * subsys_get(struct subsystem * s)
{
return container_of(kobject_get(&s->kobj),struct subsystem,kobj);
}
static inline void subsys_put(struct subsystem * s)
{
kobject_put(&s->kobj);
}
struct subsys_attribute {
struct attribute attr;
ssize_t (*show)(struct subsystem *, char *, size_t, loff_t);
ssize_t (*store)(struct subsystem *, const char *, size_t, loff_t);
};
extern int subsys_create_file(struct subsystem * , struct subsys_attribute *);
extern void subsys_remove_file(struct subsystem * , struct subsys_attribute *);
#endif /* _KOBJECT_H_ */
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