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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 | |
20 | struct sock; |
21 | struct kobject; |
22 | |
23 | /* |
24 | * Namespace types which are used to tag kobjects and sysfs entries. |
25 | * Network namespace will likely be the first. |
26 | */ |
27 | enum 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 | */ |
39 | struct 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 | |
46 | int kobj_ns_type_register(const struct kobj_ns_type_operations *ops); |
47 | int kobj_ns_type_registered(enum kobj_ns_type type); |
48 | const struct kobj_ns_type_operations *kobj_child_ns_ops(struct kobject *parent); |
49 | const struct kobj_ns_type_operations *kobj_ns_ops(struct kobject *kobj); |
50 | |
51 | const void *kobj_ns_current(enum kobj_ns_type type); |
52 | const void *kobj_ns_netlink(enum kobj_ns_type type, struct sock *sk); |
53 | const void *kobj_ns_initial(enum kobj_ns_type type); |
54 | void kobj_ns_exit(enum kobj_ns_type type, const void *ns); |
55 | |
56 | #endif /* _LINUX_KOBJECT_NS_H */ |
57 |
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