1 /* 2 * SELinux support for the XFRM LSM hooks 3 * 4 * Author : Trent Jaeger, <jaegert@us.ibm.com> 5 */ 6 #ifndef _SELINUX_XFRM_H_ 7 #define _SELINUX_XFRM_H_ 8 9 int selinux_xfrm_policy_alloc(struct xfrm_policy *xp, struct xfrm_user_sec_ctx *sec_ctx); 10 int selinux_xfrm_policy_clone(struct xfrm_policy *old, struct xfrm_policy *new); 11 void selinux_xfrm_policy_free(struct xfrm_policy *xp); 12 int selinux_xfrm_policy_delete(struct xfrm_policy *xp); 13 int selinux_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx); 14 void selinux_xfrm_state_free(struct xfrm_state *x); 15 int selinux_xfrm_state_delete(struct xfrm_state *x); 16 int selinux_xfrm_policy_lookup(struct xfrm_policy *xp, u32 sk_sid, u8 dir); 17 18 /* 19 * Extract the security blob from the sock (it's actually on the socket) 20 */ 21 static inline struct inode_security_struct *get_sock_isec(struct sock *sk) 22 { 23 if (!sk->sk_socket) 24 return NULL; 25 26 return SOCK_INODE(sk->sk_socket)->i_security; 27 } 28 29 30 static inline u32 selinux_no_sk_sid(struct flowi *fl) 31 { 32 /* NOTE: no sock occurs on ICMP reply, forwards, ... */ 33 /* icmp_reply: authorize as kernel packet */ 34 if (fl && fl->proto == IPPROTO_ICMP) { 35 return SECINITSID_KERNEL; 36 } 37 38 return SECINITSID_ANY_SOCKET; 39 } 40 41 #ifdef CONFIG_SECURITY_NETWORK_XFRM 42 int selinux_xfrm_sock_rcv_skb(u32 sid, struct sk_buff *skb); 43 int selinux_xfrm_postroute_last(u32 isec_sid, struct sk_buff *skb); 44 u32 selinux_socket_getpeer_stream(struct sock *sk); 45 u32 selinux_socket_getpeer_dgram(struct sk_buff *skb); 46 #else 47 static inline int selinux_xfrm_sock_rcv_skb(u32 isec_sid, struct sk_buff *skb) 48 { 49 return 0; 50 } 51 52 static inline int selinux_xfrm_postroute_last(u32 isec_sid, struct sk_buff *skb) 53 { 54 return 0; 55 } 56 57 static inline int selinux_socket_getpeer_stream(struct sock *sk) 58 { 59 return SECSID_NULL; 60 } 61 62 static inline int selinux_socket_getpeer_dgram(struct sk_buff *skb) 63 { 64 return SECSID_NULL; 65 } 66 #endif 67 68 #endif /* _SELINUX_XFRM_H_ */ 69