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                         struct xfrm_policy *xp);
  24
  25
  26 /*
  27  * Extract the security blob from the sock (it's actually on the socket)
  28  */
  29 static inline struct inode_security_struct *get_sock_isec(struct sock *sk)
  30 {
  31         if (!sk->sk_socket)
  32                 return NULL;
  33
  34         return SOCK_INODE(sk->sk_socket)->i_security;
  35 }
  36
  37 #ifdef CONFIG_SECURITY_NETWORK_XFRM
  38 int selinux_xfrm_sock_rcv_skb(u32 sid, struct sk_buff *skb,
  39                         struct avc_audit_data *ad);
  40 int selinux_xfrm_postroute_last(u32 isec_sid, struct sk_buff *skb,
  41                         struct avc_audit_data *ad);
  42 u32 selinux_socket_getpeer_stream(struct sock *sk);
  43 u32 selinux_socket_getpeer_dgram(struct sk_buff *skb);
  44 int selinux_xfrm_decode_session(struct sk_buff *skb, u32 *sid, int ckall);
  45 #else
  46 static inline int selinux_xfrm_sock_rcv_skb(u32 isec_sid, struct sk_buff *skb,
  47                         struct avc_audit_data *ad)
  48 {
  49         return 0;
  50 }
  51
  52 static inline int selinux_xfrm_postroute_last(u32 isec_sid, struct sk_buff *skb,
  53                         struct avc_audit_data *ad)
  54 {
  55         return 0;
  56 }
  57
  58 static inline int selinux_socket_getpeer_stream(struct sock *sk)
  59 {
  60         return SECSID_NULL;
  61 }
  62
  63 static inline int selinux_socket_getpeer_dgram(struct sk_buff *skb)
  64 {
  65         return SECSID_NULL;
  66 }
  67 static inline int selinux_xfrm_decode_session(struct sk_buff *skb, u32 *sid, int ckall)
  68 {
  69         *sid = SECSID_NULL;
  70         return 0;
  71 }
  72 #endif
  73
  74 #endif /* _SELINUX_XFRM_H_ */