1 files changed, 132 insertions, 0 deletions

diff --git a/include/linux/security.h b/include/linux/security.h
index f7e0ae018712..ef753654daa5 100644
--- a/include/linux/security.h
+++ b/include/linux/security.h
@@ -59,6 +59,12 @@ struct sk_buff;
 struct sock;
 struct sockaddr;
 struct socket;
+struct flowi;
+struct dst_entry;
+struct xfrm_selector;
+struct xfrm_policy;
+struct xfrm_state;
+struct xfrm_user_sec_ctx;
 
 extern int cap_netlink_send(struct sock *sk, struct sk_buff *skb);
 extern int cap_netlink_recv(struct sk_buff *skb);
@@ -788,6 +794,52 @@ struct swap_info_struct;
  *      which is used to copy security attributes between local stream sockets.
  * @sk_free_security:
  *      Deallocate security structure.
+ * @sk_getsid:
+ *      Retrieve the LSM-specific sid for the sock to enable caching of network
+ *      authorizations.
+ *
+ * Security hooks for XFRM operations.
+ *
+ * @xfrm_policy_alloc_security:
+ *      @xp contains the xfrm_policy being added to Security Policy Database
+ *      used by the XFRM system.
+ *      @sec_ctx contains the security context information being provided by
+ *      the user-level policy update program (e.g., setkey).
+ *      Allocate a security structure to the xp->selector.security field.
+ *      The security field is initialized to NULL when the xfrm_policy is
+ *      allocated.
+ *      Return 0 if operation was successful (memory to allocate, legal context)
+ * @xfrm_policy_clone_security:
+ *      @old contains an existing xfrm_policy in the SPD.
+ *      @new contains a new xfrm_policy being cloned from old.
+ *      Allocate a security structure to the new->selector.security field
+ *      that contains the information from the old->selector.security field.
+ *      Return 0 if operation was successful (memory to allocate).
+ * @xfrm_policy_free_security:
+ *      @xp contains the xfrm_policy
+ *      Deallocate xp->selector.security.
+ * @xfrm_state_alloc_security:
+ *      @x contains the xfrm_state being added to the Security Association
+ *      Database by the XFRM system.
+ *      @sec_ctx contains the security context information being provided by
+ *      the user-level SA generation program (e.g., setkey or racoon).
+ *      Allocate a security structure to the x->sel.security field.  The
+ *      security field is initialized to NULL when the xfrm_state is
+ *      allocated.
+ *      Return 0 if operation was successful (memory to allocate, legal context).
+ * @xfrm_state_free_security:
+ *      @x contains the xfrm_state.
+ *      Deallocate x>sel.security.
+ * @xfrm_policy_lookup:
+ *      @xp contains the xfrm_policy for which the access control is being
+ *      checked.
+ *      @sk_sid contains the sock security label that is used to authorize
+ *      access to the policy xp.
+ *      @dir contains the direction of the flow (input or output).
+ *      Check permission when a sock selects a xfrm_policy for processing
+ *      XFRMs on a packet.  The hook is called when selecting either a
+ *      per-socket policy or a generic xfrm policy.
+ *      Return 0 if permission is granted.
  *
  * Security hooks affecting all Key Management operations
  *
@@ -1237,8 +1289,18 @@ struct security_operations {
         int (*socket_getpeersec) (struct socket *sock, char __user *optval, int __user *optlen, unsigned len);
         int (*sk_alloc_security) (struct sock *sk, int family, gfp_t priority);
         void (*sk_free_security) (struct sock *sk);
+        unsigned int (*sk_getsid) (struct sock *sk, struct flowi *fl, u8 dir);
 #endif  /* CONFIG_SECURITY_NETWORK */
 
+#ifdef CONFIG_SECURITY_NETWORK_XFRM
+        int (*xfrm_policy_alloc_security) (struct xfrm_policy *xp, struct xfrm_user_sec_ctx *sec_ctx);
+        int (*xfrm_policy_clone_security) (struct xfrm_policy *old, struct xfrm_policy *new);
+        void (*xfrm_policy_free_security) (struct xfrm_policy *xp);
+        int (*xfrm_state_alloc_security) (struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx);
+        void (*xfrm_state_free_security) (struct xfrm_state *x);
+        int (*xfrm_policy_lookup)(struct xfrm_policy *xp, u32 sk_sid, u8 dir);
+#endif  /* CONFIG_SECURITY_NETWORK_XFRM */
+
         /* key management security hooks */
 #ifdef CONFIG_KEYS
         int (*key_alloc)(struct key *key);
@@ -2679,6 +2741,11 @@ static inline void security_sk_free(struct sock *sk)
 {
         return security_ops->sk_free_security(sk);
 }
+
+static inline unsigned int security_sk_sid(struct sock *sk, struct flowi *fl, u8 dir)
+{
+        return security_ops->sk_getsid(sk, fl, dir);
+}
 #else   /* CONFIG_SECURITY_NETWORK */
 static inline int security_unix_stream_connect(struct socket * sock,
                                                struct socket * other, 
@@ -2795,8 +2862,73 @@ static inline int security_sk_alloc(struct sock *sk, int family, gfp_t priority)
 static inline void security_sk_free(struct sock *sk)
 {
 }
+
+static inline unsigned int security_sk_sid(struct sock *sk, struct flowi *fl, u8 dir)
+{
+        return 0;
+}
 #endif  /* CONFIG_SECURITY_NETWORK */
 
+#ifdef CONFIG_SECURITY_NETWORK_XFRM
+static inline int security_xfrm_policy_alloc(struct xfrm_policy *xp, struct xfrm_user_sec_ctx *sec_ctx)
+{
+        return security_ops->xfrm_policy_alloc_security(xp, sec_ctx);
+}
+
+static inline int security_xfrm_policy_clone(struct xfrm_policy *old, struct xfrm_policy *new)
+{
+        return security_ops->xfrm_policy_clone_security(old, new);
+}
+
+static inline void security_xfrm_policy_free(struct xfrm_policy *xp)
+{
+        security_ops->xfrm_policy_free_security(xp);
+}
+
+static inline int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx)
+{
+        return security_ops->xfrm_state_alloc_security(x, sec_ctx);
+}
+
+static inline void security_xfrm_state_free(struct xfrm_state *x)
+{
+        security_ops->xfrm_state_free_security(x);
+}
+
+static inline int security_xfrm_policy_lookup(struct xfrm_policy *xp, u32 sk_sid, u8 dir)
+{
+        return security_ops->xfrm_policy_lookup(xp, sk_sid, dir);
+}
+#else   /* CONFIG_SECURITY_NETWORK_XFRM */
+static inline int security_xfrm_policy_alloc(struct xfrm_policy *xp, struct xfrm_user_sec_ctx *sec_ctx)
+{
+        return 0;
+}
+
+static inline int security_xfrm_policy_clone(struct xfrm_policy *old, struct xfrm_policy *new)
+{
+        return 0;
+}
+
+static inline void security_xfrm_policy_free(struct xfrm_policy *xp)
+{
+}
+
+static inline int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx)
+{
+        return 0;
+}
+
+static inline void security_xfrm_state_free(struct xfrm_state *x)
+{
+}
+
+static inline int security_xfrm_policy_lookup(struct xfrm_policy *xp, u32 sk_sid, u8 dir)
+{
+        return 0;
+}
+#endif  /* CONFIG_SECURITY_NETWORK_XFRM */
+
 #ifdef CONFIG_KEYS
 #ifdef CONFIG_SECURITY
 static inline int security_key_alloc(struct key *key)