Rev 5270 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed
Rev | Author | Line No. | Line |
---|---|---|---|
3763 | Serge | 1 | /* |
2 | * kobject.h - generic kernel object infrastructure. |
||
3 | * |
||
4 | * Copyright (c) 2002-2003 Patrick Mochel |
||
5 | * Copyright (c) 2002-2003 Open Source Development Labs |
||
6 | * Copyright (c) 2006-2008 Greg Kroah-Hartman |
||
7 | * Copyright (c) 2006-2008 Novell Inc. |
||
8 | * |
||
9 | * This file is released under the GPLv2. |
||
10 | * |
||
11 | * Please read Documentation/kobject.txt before using the kobject |
||
12 | * interface, ESPECIALLY the parts about reference counts and object |
||
13 | * destructors. |
||
14 | */ |
||
15 | |||
16 | #ifndef _KOBJECT_H_ |
||
17 | #define _KOBJECT_H_ |
||
18 | |||
19 | #include |
||
20 | #include |
||
21 | //#include |
||
22 | #include |
||
23 | #include |
||
24 | #include |
||
25 | //#include |
||
26 | #include |
||
27 | #include |
||
5270 | serge | 28 | #include |
29 | #include |
||
3763 | Serge | 30 | |
31 | #define UEVENT_HELPER_PATH_LEN 256 |
||
32 | #define UEVENT_NUM_ENVP 32 /* number of env pointers */ |
||
33 | #define UEVENT_BUFFER_SIZE 2048 /* buffer for the variables */ |
||
34 | |||
5056 | serge | 35 | #ifdef CONFIG_UEVENT_HELPER |
3763 | Serge | 36 | /* path to the userspace helper executed on an event */ |
37 | extern char uevent_helper[]; |
||
5056 | serge | 38 | #endif |
3763 | Serge | 39 | |
40 | /* counter to tag the uevent, read only except for the kobject core */ |
||
41 | extern u64 uevent_seqnum; |
||
42 | |||
43 | /* |
||
44 | * The actions here must match the index to the string array |
||
45 | * in lib/kobject_uevent.c |
||
46 | * |
||
47 | * Do not add new actions here without checking with the driver-core |
||
48 | * maintainers. Action strings are not meant to express subsystem |
||
49 | * or device specific properties. In most cases you want to send a |
||
50 | * kobject_uevent_env(kobj, KOBJ_CHANGE, env) with additional event |
||
51 | * specific variables added to the event environment. |
||
52 | */ |
||
53 | enum kobject_action { |
||
54 | KOBJ_ADD, |
||
55 | KOBJ_REMOVE, |
||
56 | KOBJ_CHANGE, |
||
57 | KOBJ_MOVE, |
||
58 | KOBJ_ONLINE, |
||
59 | KOBJ_OFFLINE, |
||
60 | KOBJ_MAX |
||
61 | }; |
||
62 | |||
63 | struct kobject { |
||
6082 | serge | 64 | const char *name; |
3763 | Serge | 65 | struct list_head entry; |
66 | struct kobject *parent; |
||
67 | // struct kset *kset; |
||
68 | struct kobj_type *ktype; |
||
69 | // struct sysfs_dirent *sd; |
||
70 | struct kref kref; |
||
5056 | serge | 71 | #ifdef CONFIG_DEBUG_KOBJECT_RELEASE |
72 | struct delayed_work release; |
||
73 | #endif |
||
3763 | Serge | 74 | unsigned int state_initialized:1; |
75 | unsigned int state_in_sysfs:1; |
||
76 | unsigned int state_add_uevent_sent:1; |
||
77 | unsigned int state_remove_uevent_sent:1; |
||
78 | unsigned int uevent_suppress:1; |
||
79 | }; |
||
80 | |||
81 | extern __printf(2, 3) |
||
82 | int kobject_set_name(struct kobject *kobj, const char *name, ...); |
||
6082 | serge | 83 | extern __printf(2, 0) |
84 | int kobject_set_name_vargs(struct kobject *kobj, const char *fmt, |
||
85 | va_list vargs); |
||
3763 | Serge | 86 | |
87 | static inline const char *kobject_name(const struct kobject *kobj) |
||
88 | { |
||
89 | return kobj->name; |
||
90 | } |
||
91 | |||
92 | extern void kobject_init(struct kobject *kobj, struct kobj_type *ktype); |
||
93 | extern __printf(3, 4) __must_check |
||
94 | int kobject_add(struct kobject *kobj, struct kobject *parent, |
||
95 | const char *fmt, ...); |
||
96 | extern __printf(4, 5) __must_check |
||
97 | int kobject_init_and_add(struct kobject *kobj, |
||
98 | struct kobj_type *ktype, struct kobject *parent, |
||
99 | const char *fmt, ...); |
||
100 | |||
101 | extern void kobject_del(struct kobject *kobj); |
||
102 | |||
103 | extern struct kobject * __must_check kobject_create(void); |
||
104 | extern struct kobject * __must_check kobject_create_and_add(const char *name, |
||
105 | struct kobject *parent); |
||
106 | |||
107 | extern int __must_check kobject_rename(struct kobject *, const char *new_name); |
||
108 | extern int __must_check kobject_move(struct kobject *, struct kobject *); |
||
109 | |||
110 | extern struct kobject *kobject_get(struct kobject *kobj); |
||
111 | extern void kobject_put(struct kobject *kobj); |
||
112 | |||
5056 | serge | 113 | extern const void *kobject_namespace(struct kobject *kobj); |
3763 | Serge | 114 | extern char *kobject_get_path(struct kobject *kobj, gfp_t flag); |
115 | |||
116 | struct kobj_type { |
||
117 | void (*release)(struct kobject *kobj); |
||
118 | // const struct sysfs_ops *sysfs_ops; |
||
119 | // struct attribute **default_attrs; |
||
120 | // const struct kobj_ns_type_operations *(*child_ns_type)(struct kobject *kobj); |
||
121 | // const void *(*namespace)(struct kobject *kobj); |
||
122 | }; |
||
123 | |||
124 | struct kobj_uevent_env { |
||
6082 | serge | 125 | char *argv[3]; |
3763 | Serge | 126 | char *envp[UEVENT_NUM_ENVP]; |
127 | int envp_idx; |
||
128 | char buf[UEVENT_BUFFER_SIZE]; |
||
129 | int buflen; |
||
130 | }; |
||
131 | |||
132 | //struct kset_uevent_ops { |
||
133 | // int (* const filter)(struct kset *kset, struct kobject *kobj); |
||
134 | // const char *(* const name)(struct kset *kset, struct kobject *kobj); |
||
135 | // int (* const uevent)(struct kset *kset, struct kobject *kobj, |
||
136 | // struct kobj_uevent_env *env); |
||
137 | //}; |
||
138 | |||
139 | struct kobj_attribute { |
||
140 | // struct attribute attr; |
||
141 | ssize_t (*show)(struct kobject *kobj, struct kobj_attribute *attr, |
||
142 | char *buf); |
||
143 | ssize_t (*store)(struct kobject *kobj, struct kobj_attribute *attr, |
||
144 | const char *buf, size_t count); |
||
145 | }; |
||
146 | |||
147 | extern const struct sysfs_ops kobj_sysfs_ops; |
||
148 | |||
149 | struct sock; |
||
150 | |||
151 | /** |
||
152 | * struct kset - a set of kobjects of a specific type, belonging to a specific subsystem. |
||
153 | * |
||
154 | * A kset defines a group of kobjects. They can be individually |
||
155 | * different "types" but overall these kobjects all want to be grouped |
||
156 | * together and operated on in the same manner. ksets are used to |
||
157 | * define the attribute callbacks and other common events that happen to |
||
158 | * a kobject. |
||
159 | * |
||
160 | * @list: the list of all kobjects for this kset |
||
161 | * @list_lock: a lock for iterating over the kobjects |
||
162 | * @kobj: the embedded kobject for this kset (recursion, isn't it fun...) |
||
163 | * @uevent_ops: the set of uevent operations for this kset. These are |
||
164 | * called whenever a kobject has something happen to it so that the kset |
||
165 | * can add new environment variables, or filter out the uevents if so |
||
166 | * desired. |
||
167 | */ |
||
168 | struct kset { |
||
169 | struct list_head list; |
||
170 | spinlock_t list_lock; |
||
171 | struct kobject kobj; |
||
172 | // const struct kset_uevent_ops *uevent_ops; |
||
173 | }; |
||
174 | |||
175 | //extern void kset_init(struct kset *kset); |
||
176 | //extern int __must_check kset_register(struct kset *kset); |
||
177 | //extern void kset_unregister(struct kset *kset); |
||
178 | //extern struct kset * __must_check kset_create_and_add(const char *name, |
||
179 | // const struct kset_uevent_ops *u, |
||
180 | // struct kobject *parent_kobj); |
||
181 | |||
182 | //static inline struct kset *to_kset(struct kobject *kobj) |
||
183 | //{ |
||
184 | // return kobj ? container_of(kobj, struct kset, kobj) : NULL; |
||
185 | //} |
||
186 | |||
187 | //static inline struct kset *kset_get(struct kset *k) |
||
188 | //{ |
||
189 | // return k ? to_kset(kobject_get(&k->kobj)) : NULL; |
||
190 | //} |
||
191 | |||
192 | //static inline void kset_put(struct kset *k) |
||
193 | //{ |
||
194 | // kobject_put(&k->kobj); |
||
195 | //} |
||
196 | |||
197 | static inline struct kobj_type *get_ktype(struct kobject *kobj) |
||
198 | { |
||
199 | return kobj->ktype; |
||
200 | } |
||
201 | |||
202 | //extern struct kobject *kset_find_obj(struct kset *, const char *); |
||
203 | |||
204 | /* The global /sys/kernel/ kobject for people to chain off of */ |
||
205 | extern struct kobject *kernel_kobj; |
||
206 | /* The global /sys/kernel/mm/ kobject for people to chain off of */ |
||
207 | extern struct kobject *mm_kobj; |
||
208 | /* The global /sys/hypervisor/ kobject for people to chain off of */ |
||
209 | extern struct kobject *hypervisor_kobj; |
||
210 | /* The global /sys/power/ kobject for people to chain off of */ |
||
211 | extern struct kobject *power_kobj; |
||
212 | /* The global /sys/firmware/ kobject for people to chain off of */ |
||
213 | extern struct kobject *firmware_kobj; |
||
214 | |||
215 | int kobject_uevent(struct kobject *kobj, enum kobject_action action); |
||
216 | int kobject_uevent_env(struct kobject *kobj, enum kobject_action action, |
||
217 | char *envp[]); |
||
218 | |||
219 | __printf(2, 3) |
||
220 | int add_uevent_var(struct kobj_uevent_env *env, const char *format, ...); |
||
221 | |||
222 | int kobject_action_type(const char *buf, size_t count, |
||
223 | enum kobject_action *type); |
||
224 | |||
225 | #endif /* _KOBJECT_H_ */ |