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review.shift-gmbh.com / SHIFTPHONES / mainline / linux / eef9b41622f2f09e824fb4e7356b42bddada6623 / . / security / selinux / include / xfrm.h
blob: b463f210f1af45b0f698c021a178ffdb53053d91 [file] [log] [blame]
Trent Jaegerd28d1e02005-12-13 23:12:40 -0800[diff] [blame]1/*
2 * SELinux support for the XFRM LSM hooks
3 *
4 * Author : Trent Jaeger, <jaegert@us.ibm.com>
Venkat Yekkiralae0d1caa2006-07-24 23:29:07 -0700[diff] [blame]5 * Updated : Venkat Yekkirala, <vyekkirala@TrustedCS.com>
Trent Jaegerd28d1e02005-12-13 23:12:40 -0800[diff] [blame]6 */
7#ifndef _SELINUX_XFRM_H_
8#define _SELINUX_XFRM_H_
9
David Howells778aae82012-03-26 16:38:47 +0100[diff] [blame]10#include <net/flow.h>
11
Paul Moore03e1ad72008-04-12 19:07:52 -0700[diff] [blame]12int selinux_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp,
13 struct xfrm_user_sec_ctx *sec_ctx);
14int selinux_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx,
15 struct xfrm_sec_ctx **new_ctxp);
16void selinux_xfrm_policy_free(struct xfrm_sec_ctx *ctx);
17int selinux_xfrm_policy_delete(struct xfrm_sec_ctx *ctx);
Venkat Yekkiralae0d1caa2006-07-24 23:29:07 -0700[diff] [blame]18int selinux_xfrm_state_alloc(struct xfrm_state *x,
Paul Moore2e5aa862013-07-23 17:38:38 -0400[diff] [blame]19 struct xfrm_user_sec_ctx *uctx);
20int selinux_xfrm_state_alloc_acquire(struct xfrm_state *x,
21 struct xfrm_sec_ctx *polsec, u32 secid);
Trent Jaegerd28d1e02005-12-13 23:12:40 -0800[diff] [blame]22void selinux_xfrm_state_free(struct xfrm_state *x);
Catherine Zhangc8c05a82006-06-08 23:39:49 -0700[diff] [blame]23int selinux_xfrm_state_delete(struct xfrm_state *x);
Paul Moore03e1ad72008-04-12 19:07:52 -0700[diff] [blame]24int selinux_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir);
Venkat Yekkiralae0d1caa2006-07-24 23:29:07 -0700[diff] [blame]25int selinux_xfrm_state_pol_flow_match(struct xfrm_state *x,
David S. Millere33f7702011-02-22 18:13:15 -0800[diff] [blame]26 struct xfrm_policy *xp, const struct flowi *fl);
Trent Jaegerd28d1e02005-12-13 23:12:40 -0800[diff] [blame]27
28/*
29 * Extract the security blob from the sock (it's actually on the socket)
30 */
31static inline struct inode_security_struct *get_sock_isec(struct sock *sk)
32{
33 if (!sk->sk_socket)
34 return NULL;
35
36 return SOCK_INODE(sk->sk_socket)->i_security;
37}
38
Trent Jaegerd28d1e02005-12-13 23:12:40 -0800[diff] [blame]39#ifdef CONFIG_SECURITY_NETWORK_XFRM
Paul Moored621d352008-01-29 08:43:36 -0500[diff] [blame]40extern atomic_t selinux_xfrm_refcount;
41
42static inline int selinux_xfrm_enabled(void)
43{
44 return (atomic_read(&selinux_xfrm_refcount) > 0);
45}
46
Paul Mooreeef9b412013-07-23 17:38:39 -0400[diff] [blame^]47int selinux_xfrm_sock_rcv_skb(u32 sk_sid, struct sk_buff *skb,
48 struct common_audit_data *ad);
49int selinux_xfrm_postroute_last(u32 sk_sid, struct sk_buff *skb,
50 struct common_audit_data *ad, u8 proto);
Venkat Yekkiralaa51c64f2006-07-27 22:01:34 -0700[diff] [blame]51int selinux_xfrm_decode_session(struct sk_buff *skb, u32 *sid, int ckall);
Venkat Yekkirala342a0cf2007-01-26 19:03:48 -0800[diff] [blame]52
53static inline void selinux_xfrm_notify_policyload(void)
54{
55 atomic_inc(&flow_cache_genid);
Nicolas Dichtelee8372d2012-09-10 22:09:45 +0000[diff] [blame]56 rt_genid_bump(&init_net);
Venkat Yekkirala342a0cf2007-01-26 19:03:48 -0800[diff] [blame]57}
Trent Jaegerd28d1e02005-12-13 23:12:40 -0800[diff] [blame]58#else
Paul Moored621d352008-01-29 08:43:36 -0500[diff] [blame]59static inline int selinux_xfrm_enabled(void)
60{
61 return 0;
62}
63
Paul Mooreeef9b412013-07-23 17:38:39 -0400[diff] [blame^]64static inline int selinux_xfrm_sock_rcv_skb(u32 sk_sid, struct sk_buff *skb,
65 struct common_audit_data *ad)
Trent Jaegerd28d1e02005-12-13 23:12:40 -0800[diff] [blame]66{
67 return 0;
68}
69
Paul Mooreeef9b412013-07-23 17:38:39 -0400[diff] [blame^]70static inline int selinux_xfrm_postroute_last(u32 sk_sid, struct sk_buff *skb,
71 struct common_audit_data *ad,
72 u8 proto)
Trent Jaegerd28d1e02005-12-13 23:12:40 -0800[diff] [blame]73{
James Morris4e5ab4c2006-06-09 00:33:33 -0700[diff] [blame]74 return 0;
Trent Jaegerd28d1e02005-12-13 23:12:40 -0800[diff] [blame]75}
Catherine Zhange6f50712006-03-20 22:49:00 -0800[diff] [blame]76
Venkat Yekkiralaa51c64f2006-07-27 22:01:34 -0700[diff] [blame]77static inline int selinux_xfrm_decode_session(struct sk_buff *skb, u32 *sid, int ckall)
78{
79 *sid = SECSID_NULL;
80 return 0;
81}
Venkat Yekkirala342a0cf2007-01-26 19:03:48 -0800[diff] [blame]82
83static inline void selinux_xfrm_notify_policyload(void)
84{
85}
Trent Jaegerd28d1e02005-12-13 23:12:40 -0800[diff] [blame]86#endif
87
Venkat Yekkirala6b877692006-11-08 17:04:09 -0600[diff] [blame]88static inline void selinux_skb_xfrm_sid(struct sk_buff *skb, u32 *sid)
89{
90 int err = selinux_xfrm_decode_session(skb, sid, 0);
91 BUG_ON(err);
92}
93
Trent Jaegerd28d1e02005-12-13 23:12:40 -0800[diff] [blame]94#endif /* _SELINUX_XFRM_H_ */