security/selinux/include/xfrm.h

   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 int selinux_xfrm_policy_alloc(struct xfrm_policy *xp,
  11                 struct xfrm_user_sec_ctx *sec_ctx, struct sock *sk);
  12 int selinux_xfrm_policy_clone(struct xfrm_policy *old, struct xfrm_policy *new);
  13 void selinux_xfrm_policy_free(struct xfrm_policy *xp);
  14 int selinux_xfrm_policy_delete(struct xfrm_policy *xp);
  15 int selinux_xfrm_state_alloc(struct xfrm_state *x,
  16         struct xfrm_user_sec_ctx *sec_ctx, struct xfrm_sec_ctx *pol, u32 secid);
  17 void selinux_xfrm_state_free(struct xfrm_state *x);
  18 int selinux_xfrm_state_delete(struct xfrm_state *x);
  19 int selinux_xfrm_policy_lookup(struct xfrm_policy *xp, u32 fl_secid, u8 dir);
  20 int selinux_xfrm_state_pol_flow_match(struct xfrm_state *x,
  21                         struct xfrm_policy *xp, struct flowi *fl);
  22 int selinux_xfrm_flow_state_match(struct flowi *fl, struct xfrm_state *xfrm);
  23
  24
  25 /*
  26  * Extract the security blob from the sock (it's actually on the socket)
  27  */
  28 static inline struct inode_security_struct *get_sock_isec(struct sock *sk)
  29 {
  30         if (!sk->sk_socket)
  31                 return NULL;
  32
  33         return SOCK_INODE(sk->sk_socket)->i_security;
  34 }
  35
  36 #ifdef CONFIG_SECURITY_NETWORK_XFRM
  37 int selinux_xfrm_sock_rcv_skb(u32 sid, struct sk_buff *skb,
  38                         struct avc_audit_data *ad);
  39 int selinux_xfrm_postroute_last(u32 isec_sid, struct sk_buff *skb,
  40                         struct avc_audit_data *ad);
  41 u32 selinux_socket_getpeer_stream(struct sock *sk);
  42 u32 selinux_socket_getpeer_dgram(struct sk_buff *skb);
  43 int selinux_xfrm_decode_session(struct sk_buff *skb, u32 *sid, int ckall);
  44 #else
  45 static inline int selinux_xfrm_sock_rcv_skb(u32 isec_sid, struct sk_buff *skb,
  46                         struct avc_audit_data *ad)
  47 {
  48         return 0;
  49 }
  50
  51 static inline int selinux_xfrm_postroute_last(u32 isec_sid, struct sk_buff *skb,
  52                         struct avc_audit_data *ad)
  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 static inline int selinux_xfrm_decode_session(struct sk_buff *skb, u32 *sid, int ckall)
  67 {
  68         *sid = SECSID_NULL;
  69         return 0;
  70 }
  71 #endif
  72
  73 #endif /* _SELINUX_XFRM_H_ */