diff options
Diffstat (limited to 'include/linux/kobject.h')
| -rw-r--r-- | include/linux/kobject.h | 184 |
1 files changed, 75 insertions, 109 deletions
diff --git a/include/linux/kobject.h b/include/linux/kobject.h index 4a0d27f475d7..caa3f411f15d 100644 --- a/include/linux/kobject.h +++ b/include/linux/kobject.h @@ -3,15 +3,14 @@ * * Copyright (c) 2002-2003 Patrick Mochel * Copyright (c) 2002-2003 Open Source Development Labs - * Copyright (c) 2006-2007 Greg Kroah-Hartman <greg@kroah.com> - * Copyright (c) 2006-2007 Novell Inc. + * Copyright (c) 2006-2008 Greg Kroah-Hartman <greg@kroah.com> + * Copyright (c) 2006-2008 Novell Inc. * * This file is released under the GPLv2. * - * * Please read Documentation/kobject.txt before using the kobject * interface, ESPECIALLY the parts about reference counts and object - * destructors. + * destructors. */ #ifndef _KOBJECT_H_ @@ -61,48 +60,54 @@ enum kobject_action { }; struct kobject { - const char * k_name; + const char *name; struct kref kref; struct list_head entry; - struct kobject * parent; - struct kset * kset; - struct kobj_type * ktype; - struct sysfs_dirent * sd; + struct kobject *parent; + struct kset *kset; + struct kobj_type *ktype; + struct sysfs_dirent *sd; + unsigned int state_initialized:1; + unsigned int state_in_sysfs:1; + unsigned int state_add_uevent_sent:1; + unsigned int state_remove_uevent_sent:1; }; -extern int kobject_set_name(struct kobject *, const char *, ...) - __attribute__((format(printf,2,3))); +extern int kobject_set_name(struct kobject *kobj, const char *name, ...) + __attribute__((format(printf, 2, 3))); -static inline const char * kobject_name(const struct kobject * kobj) +static inline const char *kobject_name(const struct kobject *kobj) { - return kobj->k_name; + return kobj->name; } -extern void kobject_init(struct kobject *); -extern void kobject_cleanup(struct kobject *); +extern void kobject_init(struct kobject *kobj, struct kobj_type *ktype); +extern int __must_check kobject_add(struct kobject *kobj, + struct kobject *parent, + const char *fmt, ...); +extern int __must_check kobject_init_and_add(struct kobject *kobj, + struct kobj_type *ktype, + struct kobject *parent, + const char *fmt, ...); + +extern void kobject_del(struct kobject *kobj); -extern int __must_check kobject_add(struct kobject *); -extern void kobject_del(struct kobject *); +extern struct kobject * __must_check kobject_create(void); +extern struct kobject * __must_check kobject_create_and_add(const char *name, + struct kobject *parent); extern int __must_check kobject_rename(struct kobject *, const char *new_name); extern int __must_check kobject_move(struct kobject *, struct kobject *); -extern int __must_check kobject_register(struct kobject *); -extern void kobject_unregister(struct kobject *); - -extern struct kobject * kobject_get(struct kobject *); -extern void kobject_put(struct kobject *); - -extern struct kobject *kobject_kset_add_dir(struct kset *kset, - struct kobject *, const char *); -extern struct kobject *kobject_add_dir(struct kobject *, const char *); +extern struct kobject *kobject_get(struct kobject *kobj); +extern void kobject_put(struct kobject *kobj); -extern char * kobject_get_path(struct kobject *, gfp_t); +extern char *kobject_get_path(struct kobject *kobj, gfp_t flag); struct kobj_type { - void (*release)(struct kobject *); - struct sysfs_ops * sysfs_ops; - struct attribute ** default_attrs; + void (*release)(struct kobject *kobj); + struct sysfs_ops *sysfs_ops; + struct attribute **default_attrs; }; struct kobj_uevent_env { @@ -119,6 +124,16 @@ struct kset_uevent_ops { struct kobj_uevent_env *env); }; +struct kobj_attribute { + struct attribute attr; + ssize_t (*show)(struct kobject *kobj, struct kobj_attribute *attr, + char *buf); + ssize_t (*store)(struct kobject *kobj, struct kobj_attribute *attr, + const char *buf, size_t count); +}; + +extern struct sysfs_ops kobj_sysfs_ops; + /** * struct kset - a set of kobjects of a specific type, belonging to a specific subsystem. * @@ -128,7 +143,6 @@ struct kset_uevent_ops { * define the attribute callbacks and other common events that happen to * a kobject. * - * @ktype: the struct kobj_type for this specific kset * @list: the list of all kobjects for this kset * @list_lock: a lock for iterating over the kobjects * @kobj: the embedded kobject for this kset (recursion, isn't it fun...) @@ -138,99 +152,49 @@ struct kset_uevent_ops { * desired. */ struct kset { - struct kobj_type *ktype; - struct list_head list; - spinlock_t list_lock; - struct kobject kobj; - struct kset_uevent_ops *uevent_ops; + struct list_head list; + spinlock_t list_lock; + struct kobject kobj; + struct kset_uevent_ops *uevent_ops; }; +extern void kset_init(struct kset *kset); +extern int __must_check kset_register(struct kset *kset); +extern void kset_unregister(struct kset *kset); +extern struct kset * __must_check kset_create_and_add(const char *name, + struct kset_uevent_ops *u, + struct kobject *parent_kobj); -extern void kset_init(struct kset * k); -extern int __must_check kset_add(struct kset * k); -extern int __must_check kset_register(struct kset * k); -extern void kset_unregister(struct kset * k); - -static inline struct kset * to_kset(struct kobject * kobj) +static inline struct kset *to_kset(struct kobject *kobj) { - return kobj ? container_of(kobj,struct kset,kobj) : NULL; + return kobj ? container_of(kobj, struct kset, kobj) : NULL; } -static inline struct kset * kset_get(struct kset * k) +static inline struct kset *kset_get(struct kset *k) { return k ? to_kset(kobject_get(&k->kobj)) : NULL; } -static inline void kset_put(struct kset * k) +static inline void kset_put(struct kset *k) { kobject_put(&k->kobj); } -static inline struct kobj_type * get_ktype(struct kobject * k) +static inline struct kobj_type *get_ktype(struct kobject *kobj) { - if (k->kset && k->kset->ktype) - return k->kset->ktype; - else - return k->ktype; + return kobj->ktype; } -extern struct kobject * kset_find_obj(struct kset *, const char *); - - -/* - * Use this when initializing an embedded kset with no other - * fields to initialize. - */ -#define set_kset_name(str) .kset = { .kobj = { .k_name = str } } - - -#define decl_subsys(_name,_type,_uevent_ops) \ -struct kset _name##_subsys = { \ - .kobj = { .k_name = __stringify(_name) }, \ - .ktype = _type, \ - .uevent_ops =_uevent_ops, \ -} -#define decl_subsys_name(_varname,_name,_type,_uevent_ops) \ -struct kset _varname##_subsys = { \ - .kobj = { .k_name = __stringify(_name) }, \ - .ktype = _type, \ - .uevent_ops =_uevent_ops, \ -} - -/* The global /sys/kernel/ subsystem for people to chain off of */ -extern struct kset kernel_subsys; -/* The global /sys/hypervisor/ subsystem */ -extern struct kset hypervisor_subsys; - -/* - * Helpers for setting the kset of registered objects. - * Often, a registered object belongs to a kset embedded in a - * subsystem. These do no magic, just make the resulting code - * easier to follow. - */ - -/** - * kobj_set_kset_s(obj,subsys) - set kset for embedded kobject. - * @obj: ptr to some object type. - * @subsys: a subsystem object (not a ptr). - * - * Can be used for any object type with an embedded ->kobj. - */ - -#define kobj_set_kset_s(obj,subsys) \ - (obj)->kobj.kset = &(subsys) - -extern int __must_check subsystem_register(struct kset *); -extern void subsystem_unregister(struct kset *); - -struct subsys_attribute { - struct attribute attr; - ssize_t (*show)(struct kset *, char *); - ssize_t (*store)(struct kset *, const char *, size_t); -}; +extern struct kobject *kset_find_obj(struct kset *, const char *); -extern int __must_check subsys_create_file(struct kset *, - struct subsys_attribute *); +/* The global /sys/kernel/ kobject for people to chain off of */ +extern struct kobject *kernel_kobj; +/* The global /sys/hypervisor/ kobject for people to chain off of */ +extern struct kobject *hypervisor_kobj; +/* The global /sys/power/ kobject for people to chain off of */ +extern struct kobject *power_kobj; +/* The global /sys/firmware/ kobject for people to chain off of */ +extern struct kobject *firmware_kobj; #if defined(CONFIG_HOTPLUG) int kobject_uevent(struct kobject *kobj, enum kobject_action action); @@ -243,18 +207,20 @@ int add_uevent_var(struct kobj_uevent_env *env, const char *format, ...) int kobject_action_type(const char *buf, size_t count, enum kobject_action *type); #else -static inline int kobject_uevent(struct kobject *kobj, enum kobject_action action) +static inline int kobject_uevent(struct kobject *kobj, + enum kobject_action action) { return 0; } static inline int kobject_uevent_env(struct kobject *kobj, enum kobject_action action, char *envp[]) { return 0; } -static inline int add_uevent_var(struct kobj_uevent_env *env, const char *format, ...) +static inline int add_uevent_var(struct kobj_uevent_env *env, + const char *format, ...) { return 0; } static inline int kobject_action_type(const char *buf, size_t count, - enum kobject_action *type) + enum kobject_action *type) { return -EINVAL; } #endif |