author | Florian Westphal <fw@strlen.de> |
Sun, 11 Jan 2009 20:20:11 +0100 | |
changeset 0 | aa628870c1d3 |
permissions | -rw-r--r-- |
0
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Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
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/* |
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Port of Linux 2.6.28 for use with network simulation cradle.
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parents:
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* kobject.h - generic kernel object infrastructure. |
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Port of Linux 2.6.28 for use with network simulation cradle.
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parents:
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* |
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Port of Linux 2.6.28 for use with network simulation cradle.
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* Copyright (c) 2002-2003 Patrick Mochel |
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Port of Linux 2.6.28 for use with network simulation cradle.
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* Copyright (c) 2002-2003 Open Source Development Labs |
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Port of Linux 2.6.28 for use with network simulation cradle.
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* Copyright (c) 2006-2008 Greg Kroah-Hartman <greg@kroah.com> |
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Port of Linux 2.6.28 for use with network simulation cradle.
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* Copyright (c) 2006-2008 Novell Inc. |
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Port of Linux 2.6.28 for use with network simulation cradle.
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* |
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Port of Linux 2.6.28 for use with network simulation cradle.
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* This file is released under the GPLv2. |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
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parents:
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* |
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Port of Linux 2.6.28 for use with network simulation cradle.
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* Please read Documentation/kobject.txt before using the kobject |
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Port of Linux 2.6.28 for use with network simulation cradle.
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* interface, ESPECIALLY the parts about reference counts and object |
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Port of Linux 2.6.28 for use with network simulation cradle.
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* destructors. |
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Port of Linux 2.6.28 for use with network simulation cradle.
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*/ |
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Port of Linux 2.6.28 for use with network simulation cradle.
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|
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Port of Linux 2.6.28 for use with network simulation cradle.
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#ifndef _KOBJECT_H_ |
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#define _KOBJECT_H_ |
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|
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#include <linux/types.h> |
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#include <linux/list.h> |
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#include <linux/sysfs.h> |
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#include <linux/compiler.h> |
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#include <linux/spinlock.h> |
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#include <linux/kref.h> |
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#include <linux/kernel.h> |
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#include <linux/wait.h> |
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#include <asm/atomic.h> |
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#define UEVENT_HELPER_PATH_LEN 256 |
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#define UEVENT_NUM_ENVP 32 /* number of env pointers */ |
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#define UEVENT_BUFFER_SIZE 2048 /* buffer for the variables */ |
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/* path to the userspace helper executed on an event */ |
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extern char uevent_helper[]; |
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|
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/* counter to tag the uevent, read only except for the kobject core */ |
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extern u64 uevent_seqnum; |
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/* |
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* The actions here must match the index to the string array |
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* in lib/kobject_uevent.c |
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Port of Linux 2.6.28 for use with network simulation cradle.
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* |
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* Do not add new actions here without checking with the driver-core |
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* maintainers. Action strings are not meant to express subsystem |
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* or device specific properties. In most cases you want to send a |
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* kobject_uevent_env(kobj, KOBJ_CHANGE, env) with additional event |
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* specific variables added to the event environment. |
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*/ |
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enum kobject_action { |
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KOBJ_ADD, |
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KOBJ_REMOVE, |
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KOBJ_CHANGE, |
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KOBJ_MOVE, |
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KOBJ_ONLINE, |
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KOBJ_OFFLINE, |
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KOBJ_MAX |
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}; |
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|
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struct kobject { |
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const char *name; |
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struct list_head entry; |
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Port of Linux 2.6.28 for use with network simulation cradle.
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struct kobject *parent; |
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struct kset *kset; |
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struct kobj_type *ktype; |
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struct sysfs_dirent *sd; |
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struct kref kref; |
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unsigned int state_initialized:1; |
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unsigned int state_in_sysfs:1; |
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unsigned int state_add_uevent_sent:1; |
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unsigned int state_remove_uevent_sent:1; |
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}; |
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extern int kobject_set_name(struct kobject *kobj, const char *name, ...) |
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__attribute__((format(printf, 2, 3))); |
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static inline const char *kobject_name(const struct kobject *kobj) |
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{ |
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return kobj->name; |
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} |
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Port of Linux 2.6.28 for use with network simulation cradle.
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extern void kobject_init(struct kobject *kobj, struct kobj_type *ktype); |
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extern int __must_check kobject_add(struct kobject *kobj, |
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Port of Linux 2.6.28 for use with network simulation cradle.
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struct kobject *parent, |
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Port of Linux 2.6.28 for use with network simulation cradle.
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const char *fmt, ...); |
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Port of Linux 2.6.28 for use with network simulation cradle.
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extern int __must_check kobject_init_and_add(struct kobject *kobj, |
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Port of Linux 2.6.28 for use with network simulation cradle.
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struct kobj_type *ktype, |
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Port of Linux 2.6.28 for use with network simulation cradle.
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struct kobject *parent, |
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Port of Linux 2.6.28 for use with network simulation cradle.
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const char *fmt, ...); |
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extern void kobject_del(struct kobject *kobj); |
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extern struct kobject * __must_check kobject_create(void); |
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extern struct kobject * __must_check kobject_create_and_add(const char *name, |
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struct kobject *parent); |
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extern int __must_check kobject_rename(struct kobject *, const char *new_name); |
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extern int __must_check kobject_move(struct kobject *, struct kobject *); |
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extern struct kobject *kobject_get(struct kobject *kobj); |
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extern void kobject_put(struct kobject *kobj); |
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extern char *kobject_get_path(struct kobject *kobj, gfp_t flag); |
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struct kobj_type { |
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void (*release)(struct kobject *kobj); |
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struct sysfs_ops *sysfs_ops; |
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struct attribute **default_attrs; |
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}; |
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struct kobj_uevent_env { |
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char *envp[UEVENT_NUM_ENVP]; |
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int envp_idx; |
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char buf[UEVENT_BUFFER_SIZE]; |
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int buflen; |
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}; |
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116 |
|
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struct kset_uevent_ops { |
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int (*filter)(struct kset *kset, struct kobject *kobj); |
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const char *(*name)(struct kset *kset, struct kobject *kobj); |
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int (*uevent)(struct kset *kset, struct kobject *kobj, |
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struct kobj_uevent_env *env); |
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}; |
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123 |
|
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struct kobj_attribute { |
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struct attribute attr; |
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ssize_t (*show)(struct kobject *kobj, struct kobj_attribute *attr, |
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char *buf); |
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ssize_t (*store)(struct kobject *kobj, struct kobj_attribute *attr, |
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const char *buf, size_t count); |
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130 |
}; |
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131 |
|
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extern struct sysfs_ops kobj_sysfs_ops; |
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133 |
|
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134 |
/** |
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* struct kset - a set of kobjects of a specific type, belonging to a specific subsystem. |
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136 |
* |
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* A kset defines a group of kobjects. They can be individually |
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138 |
* different "types" but overall these kobjects all want to be grouped |
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* together and operated on in the same manner. ksets are used to |
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* define the attribute callbacks and other common events that happen to |
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* a kobject. |
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* |
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* @list: the list of all kobjects for this kset |
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* @list_lock: a lock for iterating over the kobjects |
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* @kobj: the embedded kobject for this kset (recursion, isn't it fun...) |
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* @uevent_ops: the set of uevent operations for this kset. These are |
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* called whenever a kobject has something happen to it so that the kset |
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* can add new environment variables, or filter out the uevents if so |
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* desired. |
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150 |
*/ |
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struct kset { |
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struct list_head list; |
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spinlock_t list_lock; |
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struct kobject kobj; |
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struct kset_uevent_ops *uevent_ops; |
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156 |
}; |
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157 |
|
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extern void kset_init(struct kset *kset); |
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extern int __must_check kset_register(struct kset *kset); |
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extern void kset_unregister(struct kset *kset); |
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extern struct kset * __must_check kset_create_and_add(const char *name, |
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162 |
struct kset_uevent_ops *u, |
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163 |
struct kobject *parent_kobj); |
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164 |
|
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static inline struct kset *to_kset(struct kobject *kobj) |
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166 |
{ |
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return kobj ? container_of(kobj, struct kset, kobj) : NULL; |
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168 |
} |
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169 |
|
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170 |
static inline struct kset *kset_get(struct kset *k) |
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171 |
{ |
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172 |
return k ? to_kset(kobject_get(&k->kobj)) : NULL; |
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173 |
} |
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174 |
|
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175 |
static inline void kset_put(struct kset *k) |
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176 |
{ |
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177 |
kobject_put(&k->kobj); |
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178 |
} |
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179 |
|
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180 |
static inline struct kobj_type *get_ktype(struct kobject *kobj) |
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181 |
{ |
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182 |
return kobj->ktype; |
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183 |
} |
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184 |
|
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185 |
extern struct kobject *kset_find_obj(struct kset *, const char *); |
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186 |
|
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187 |
/* The global /sys/kernel/ kobject for people to chain off of */ |
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188 |
extern struct kobject *kernel_kobj; |
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189 |
/* The global /sys/kernel/mm/ kobject for people to chain off of */ |
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190 |
extern struct kobject *mm_kobj; |
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191 |
/* The global /sys/hypervisor/ kobject for people to chain off of */ |
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192 |
extern struct kobject *hypervisor_kobj; |
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193 |
/* The global /sys/power/ kobject for people to chain off of */ |
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194 |
extern struct kobject *power_kobj; |
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195 |
/* The global /sys/firmware/ kobject for people to chain off of */ |
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196 |
extern struct kobject *firmware_kobj; |
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197 |
|
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198 |
#if defined(CONFIG_HOTPLUG) |
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199 |
int kobject_uevent(struct kobject *kobj, enum kobject_action action); |
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200 |
int kobject_uevent_env(struct kobject *kobj, enum kobject_action action, |
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201 |
char *envp[]); |
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202 |
|
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203 |
int add_uevent_var(struct kobj_uevent_env *env, const char *format, ...) |
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204 |
__attribute__((format (printf, 2, 3))); |
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205 |
|
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206 |
int kobject_action_type(const char *buf, size_t count, |
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207 |
enum kobject_action *type); |
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208 |
#else |
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209 |
static inline int kobject_uevent(struct kobject *kobj, |
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210 |
enum kobject_action action) |
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211 |
{ return 0; } |
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212 |
static inline int kobject_uevent_env(struct kobject *kobj, |
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213 |
enum kobject_action action, |
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214 |
char *envp[]) |
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215 |
{ return 0; } |
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|
216 |
|
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217 |
static inline int add_uevent_var(struct kobj_uevent_env *env, |
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218 |
const char *format, ...) |
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219 |
{ return 0; } |
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220 |
|
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221 |
static inline int kobject_action_type(const char *buf, size_t count, |
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222 |
enum kobject_action *type) |
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223 |
{ return -EINVAL; } |
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224 |
#endif |
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225 |
|
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226 |
#endif /* _KOBJECT_H_ */ |