1 /* Kernel object name space definitions
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.
8 * Split from kobject.h by David Howells (dhowells@redhat.com)
10 * This file is released under the GPLv2.
12 * Please read Documentation/kobject.txt before using the kobject
13 * interface, ESPECIALLY the parts about reference counts and object
17 #ifndef _LINUX_KOBJECT_NS_H
18 #define _LINUX_KOBJECT_NS_H
24 * Namespace types which are used to tag kobjects and sysfs entries.
25 * Network namespace will likely be the first.
28 KOBJ_NS_TYPE_NONE = 0,
34 * Callbacks so sysfs can determine namespaces
35 * @grab_current_ns: return a new reference to 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 * @drop_ns: drops a reference to namespace
40 struct kobj_ns_type_operations {
41 enum kobj_ns_type type;
42 void *(*grab_current_ns)(void);
43 const void *(*netlink_ns)(struct sock *sk);
44 const void *(*initial_ns)(void);
45 void (*drop_ns)(void *);
48 int kobj_ns_type_register(const struct kobj_ns_type_operations *ops);
49 int kobj_ns_type_registered(enum kobj_ns_type type);
50 const struct kobj_ns_type_operations *kobj_child_ns_ops(struct kobject *parent);
51 const struct kobj_ns_type_operations *kobj_ns_ops(struct kobject *kobj);
53 void *kobj_ns_grab_current(enum kobj_ns_type type);
54 const void *kobj_ns_netlink(enum kobj_ns_type type, struct sock *sk);
55 const void *kobj_ns_initial(enum kobj_ns_type type);
56 void kobj_ns_drop(enum kobj_ns_type type, void *ns);
58 #endif /* _LINUX_KOBJECT_NS_H */