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1/* Kernel object name space definitions
2 *
3 * Copyright (c) 2002-2003 Patrick Mochel
4 * Copyright (c) 2002-2003 Open Source Development Labs
5 * Copyright (c) 2006-2008 Greg Kroah-Hartman <greg@kroah.com>
6 * Copyright (c) 2006-2008 Novell Inc.
7 *
8 * Split from kobject.h by David Howells (dhowells@redhat.com)
9 *
10 * This file is released under the GPLv2.
11 *
12 * Please read Documentation/kobject.txt before using the kobject
13 * interface, ESPECIALLY the parts about reference counts and object
14 * destructors.
15 */
16
17#ifndef _LINUX_KOBJECT_NS_H
18#define _LINUX_KOBJECT_NS_H
19
20struct sock;
21struct kobject;
22
23/*
24 * Namespace types which are used to tag kobjects and sysfs entries.
25 * Network namespace will likely be the first.
26 */
27enum kobj_ns_type {
28 KOBJ_NS_TYPE_NONE = 0,
29 KOBJ_NS_TYPE_NET,
30 KOBJ_NS_TYPES
31};
32
33/*
34 * Callbacks so sysfs can determine namespaces
35 * @current_ns: return calling task's namespace
36 * @netlink_ns: return namespace to which a sock belongs (right?)
37 * @initial_ns: return the initial namespace (i.e. init_net_ns)
38 */
39struct kobj_ns_type_operations {
40 enum kobj_ns_type type;
41 const void *(*current_ns)(void);
42 const void *(*netlink_ns)(struct sock *sk);
43 const void *(*initial_ns)(void);
44};
45
46int kobj_ns_type_register(const struct kobj_ns_type_operations *ops);
47int kobj_ns_type_registered(enum kobj_ns_type type);
48const struct kobj_ns_type_operations *kobj_child_ns_ops(struct kobject *parent);
49const struct kobj_ns_type_operations *kobj_ns_ops(struct kobject *kobj);
50
51const void *kobj_ns_current(enum kobj_ns_type type);
52const void *kobj_ns_netlink(enum kobj_ns_type type, struct sock *sk);
53const void *kobj_ns_initial(enum kobj_ns_type type);
54void kobj_ns_exit(enum kobj_ns_type type, const void *ns);
55
56#endif /* _LINUX_KOBJECT_NS_H */