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acce292c CLG |
1 | /* |
2 | * This program is free software; you can redistribute it and/or | |
3 | * modify it under the terms of the GNU General Public License as | |
4 | * published by the Free Software Foundation, version 2 of the | |
5 | * License. | |
6 | */ | |
7 | ||
8 | #include <linux/module.h> | |
9 | #include <linux/version.h> | |
10 | #include <linux/nsproxy.h> | |
11 | #include <linux/user_namespace.h> | |
12 | ||
13 | struct user_namespace init_user_ns = { | |
14 | .kref = { | |
15 | .refcount = ATOMIC_INIT(2), | |
16 | }, | |
17 | .root_user = &root_user, | |
18 | }; | |
19 | ||
20 | EXPORT_SYMBOL_GPL(init_user_ns); | |
21 | ||
22 | #ifdef CONFIG_USER_NS | |
23 | ||
24 | struct user_namespace * copy_user_ns(int flags, struct user_namespace *old_ns) | |
25 | { | |
26 | struct user_namespace *new_ns; | |
27 | ||
28 | BUG_ON(!old_ns); | |
29 | get_user_ns(old_ns); | |
30 | ||
31 | new_ns = old_ns; | |
32 | return new_ns; | |
33 | } | |
34 | ||
35 | void free_user_ns(struct kref *kref) | |
36 | { | |
37 | struct user_namespace *ns; | |
38 | ||
39 | ns = container_of(kref, struct user_namespace, kref); | |
40 | kfree(ns); | |
41 | } | |
42 | ||
43 | #endif /* CONFIG_USER_NS */ |