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 10 #include <net/flow.h> 11 12 int selinux_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, 13 struct xfrm_user_sec_ctx *uctx, 14 gfp_t gfp); 15 int selinux_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, 16 struct xfrm_sec_ctx **new_ctxp); 17 void selinux_xfrm_policy_free(struct xfrm_sec_ctx *ctx); 18 int selinux_xfrm_policy_delete(struct xfrm_sec_ctx *ctx); 19 int selinux_xfrm_state_alloc(struct xfrm_state *x, 20 struct xfrm_user_sec_ctx *uctx); 21 int selinux_xfrm_state_alloc_acquire(struct xfrm_state *x, 22 struct xfrm_sec_ctx *polsec, u32 secid); 23 void selinux_xfrm_state_free(struct xfrm_state *x); 24 int selinux_xfrm_state_delete(struct xfrm_state *x); 25 int selinux_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir); 26 int selinux_xfrm_state_pol_flow_match(struct xfrm_state *x, 27 struct xfrm_policy *xp, 28 const struct flowi *fl); 29 30 #ifdef CONFIG_SECURITY_NETWORK_XFRM 31 extern atomic_t selinux_xfrm_refcount; 32 33 static inline int selinux_xfrm_enabled(void) 34 { 35 return (atomic_read(&selinux_xfrm_refcount) > 0); 36 } 37 38 int selinux_xfrm_sock_rcv_skb(u32 sk_sid, struct sk_buff *skb, 39 struct common_audit_data *ad); 40 int selinux_xfrm_postroute_last(u32 sk_sid, struct sk_buff *skb, 41 struct common_audit_data *ad, u8 proto); 42 int selinux_xfrm_decode_session(struct sk_buff *skb, u32 *sid, int ckall); 43 int selinux_xfrm_skb_sid(struct sk_buff *skb, u32 *sid); 44 45 static inline void selinux_xfrm_notify_policyload(void) 46 { 47 struct net *net; 48 49 rtnl_lock(); 50 for_each_net(net) 51 rt_genid_bump_all(net); 52 rtnl_unlock(); 53 } 54 #else 55 static inline int selinux_xfrm_enabled(void) 56 { 57 return 0; 58 } 59 60 static inline int selinux_xfrm_sock_rcv_skb(u32 sk_sid, struct sk_buff *skb, 61 struct common_audit_data *ad) 62 { 63 return 0; 64 } 65 66 static inline int selinux_xfrm_postroute_last(u32 sk_sid, struct sk_buff *skb, 67 struct common_audit_data *ad, 68 u8 proto) 69 { 70 return 0; 71 } 72 73 static inline int selinux_xfrm_decode_session(struct sk_buff *skb, u32 *sid, 74 int ckall) 75 { 76 *sid = SECSID_NULL; 77 return 0; 78 } 79 80 static inline void selinux_xfrm_notify_policyload(void) 81 { 82 } 83 84 static inline int selinux_xfrm_skb_sid(struct sk_buff *skb, u32 *sid) 85 { 86 *sid = SECSID_NULL; 87 return 0; 88 } 89 #endif 90 91 #endif /* _SELINUX_XFRM_H_ */ 92