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_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx); 13 void selinux_xfrm_state_free(struct xfrm_state *x); 14 int selinux_xfrm_policy_lookup(struct xfrm_policy *xp, u32 sk_sid, u8 dir); 15 16 /* 17 * Extract the security blob from the sock (it's actually on the socket) 18 */ 19 static inline struct inode_security_struct *get_sock_isec(struct sock *sk) 20 { 21 if (!sk->sk_socket) 22 return NULL; 23 24 return SOCK_INODE(sk->sk_socket)->i_security; 25 } 26 27 28 static inline u32 selinux_no_sk_sid(struct flowi *fl) 29 { 30 /* NOTE: no sock occurs on ICMP reply, forwards, ... */ 31 /* icmp_reply: authorize as kernel packet */ 32 if (fl && fl->proto == IPPROTO_ICMP) { 33 return SECINITSID_KERNEL; 34 } 35 36 return SECINITSID_ANY_SOCKET; 37 } 38 39 #ifdef CONFIG_SECURITY_NETWORK_XFRM 40 int selinux_xfrm_sock_rcv_skb(u32 sid, struct sk_buff *skb); 41 int selinux_xfrm_postroute_last(u32 isec_sid, struct sk_buff *skb); 42 u32 selinux_socket_getpeer_stream(struct sock *sk); 43 u32 selinux_socket_getpeer_dgram(struct sk_buff *skb); 44 #else 45 static inline int selinux_xfrm_sock_rcv_skb(u32 isec_sid, struct sk_buff *skb) 46 { 47 return 0; 48 } 49 50 static inline int selinux_xfrm_postroute_last(u32 isec_sid, struct sk_buff *skb) 51 { 52 return NF_ACCEPT; 53 } 54 55 static inline int selinux_socket_getpeer_stream(struct sock *sk) 56 { 57 return SECSID_NULL; 58 } 59 60 static inline int selinux_socket_getpeer_dgram(struct sk_buff *skb) 61 { 62 return SECSID_NULL; 63 } 64 #endif 65 66 #endif /* _SELINUX_XFRM_H_ */ 67