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Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/*
2 * SELinux support for the XFRM LSM hooks
3 *
4 * Author : Trent Jaeger, <jaegert@us.ibm.com>
5 * Updated : Venkat Yekkirala, <vyekkirala@TrustedCS.com>
6 */
7#ifndef _SELINUX_XFRM_H_
8#define _SELINUX_XFRM_H_
9
10int selinux_xfrm_policy_alloc(struct xfrm_policy *xp,
11 struct xfrm_user_sec_ctx *sec_ctx);
12int selinux_xfrm_policy_clone(struct xfrm_policy *old, struct xfrm_policy *new);
13void selinux_xfrm_policy_free(struct xfrm_policy *xp);
14int selinux_xfrm_policy_delete(struct xfrm_policy *xp);
15int selinux_xfrm_state_alloc(struct xfrm_state *x,
16 struct xfrm_user_sec_ctx *sec_ctx, u32 secid);
17void selinux_xfrm_state_free(struct xfrm_state *x);
18int selinux_xfrm_state_delete(struct xfrm_state *x);
19int selinux_xfrm_policy_lookup(struct xfrm_policy *xp, u32 fl_secid, u8 dir);
20int selinux_xfrm_state_pol_flow_match(struct xfrm_state *x,
21 struct xfrm_policy *xp, struct flowi *fl);
22
23/*
24 * Extract the security blob from the sock (it's actually on the socket)
25 */
26static inline struct inode_security_struct *get_sock_isec(struct sock *sk)
27{
28 if (!sk->sk_socket)
29 return NULL;
30
31 return SOCK_INODE(sk->sk_socket)->i_security;
32}
33
34#ifdef CONFIG_SECURITY_NETWORK_XFRM
35extern atomic_t selinux_xfrm_refcount;
36
37static inline int selinux_xfrm_enabled(void)
38{
39 return (atomic_read(&selinux_xfrm_refcount) > 0);
40}
41
42int selinux_xfrm_sock_rcv_skb(u32 sid, struct sk_buff *skb,
43 struct avc_audit_data *ad);
44int selinux_xfrm_postroute_last(u32 isec_sid, struct sk_buff *skb,
45 struct avc_audit_data *ad, u8 proto);
46int selinux_xfrm_decode_session(struct sk_buff *skb, u32 *sid, int ckall);
47
48static inline void selinux_xfrm_notify_policyload(void)
49{
50 atomic_inc(&flow_cache_genid);
51}
52#else
53static inline int selinux_xfrm_enabled(void)
54{
55 return 0;
56}
57
58static inline int selinux_xfrm_sock_rcv_skb(u32 isec_sid, struct sk_buff *skb,
59 struct avc_audit_data *ad)
60{
61 return 0;
62}
63
64static inline int selinux_xfrm_postroute_last(u32 isec_sid, struct sk_buff *skb,
65 struct avc_audit_data *ad, u8 proto)
66{
67 return 0;
68}
69
70static inline int selinux_xfrm_decode_session(struct sk_buff *skb, u32 *sid, int ckall)
71{
72 *sid = SECSID_NULL;
73 return 0;
74}
75
76static inline void selinux_xfrm_notify_policyload(void)
77{
78}
79#endif
80
81static inline void selinux_skb_xfrm_sid(struct sk_buff *skb, u32 *sid)
82{
83 int err = selinux_xfrm_decode_session(skb, sid, 0);
84 BUG_ON(err);
85}
86
87#endif /* _SELINUX_XFRM_H_ */