1 /*
2 * Copyright (c) 2016-2018 François Tigeot <ftigeot@wolfpond.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice unmodified, this list of conditions, and the following
10 * disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27 #ifndef _LINUX_KOBJECT_H_
28 #define _LINUX_KOBJECT_H_
29
30 #include <linux/types.h>
31 #include <linux/list.h>
32 #include <linux/sysfs.h>
33 #include <linux/compiler.h>
34 #include <linux/spinlock.h>
35 #include <linux/kref.h>
36 #include <linux/kernel.h>
37 #include <linux/wait.h>
38 #include <linux/atomic.h>
39
40 enum kobject_action {
41 KOBJ_ADD,
42 KOBJ_REMOVE,
43 KOBJ_CHANGE,
44 KOBJ_MOVE,
45 KOBJ_ONLINE,
46 KOBJ_OFFLINE,
47 KOBJ_MAX
48 };
49
50 struct kobject {
51 const char *name;
52 struct kref kref;
53 struct kobj_type *ktype;
54 };
55
56 struct kobj_type {
57 void (*release)(struct kobject *kobj);
58 const struct sysfs_ops *sysfs_ops;
59 struct attribute **default_attrs;
60 };
61
62 static inline int
kobject_uevent_env(struct kobject * kobj,enum kobject_action action,char * envp[])63 kobject_uevent_env(struct kobject *kobj, enum kobject_action action, char *envp[])
64 {
65 return 0;
66 }
67
68 extern __printf(4, 5) __must_check
69 int kobject_init_and_add(struct kobject *kobj,
70 struct kobj_type *ktype, struct kobject *parent,
71 const char *fmt, ...);
72
73 extern void kobject_release(struct kref *kref);
74
75 static inline void
kobject_put(struct kobject * kobj)76 kobject_put(struct kobject *kobj)
77 {
78 if (kobj != NULL)
79 kref_put(&kobj->kref, kobject_release);
80 }
81
82 static inline void
kobject_del(struct kobject * kobj)83 kobject_del(struct kobject *kobj)
84 {
85 /*
86 This function is supposed to unlink the object from a hierarchy.
87 There is no such hierarchy in the DragonFly implementation, doing
88 nothing is fine.
89 */
90 }
91
92 #endif /* _LINUX_KOBJECT_H_ */
93