audit: Add auditing to ipsec

An audit message occurs when an ipsec SA
or ipsec policy is created/deleted.

Signed-off-by: Joy Latten <latten@austin.ibm.com>
Signed-off-by: James Morris <jmorris@namei.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

2 files changed, 20 insertions, 5 deletions

diff --git a/include/linux/audit.h b/include/linux/audit.h
index b2ca666..0e07db6 100644
--- a/include/linux/audit.h
+++ b/include/linux/audit.h
@@ -101,6 +101,10 @@
 #define AUDIT_MAC_CIPSOV4_DEL	1408	/* NetLabel: del CIPSOv4 DOI entry */
 #define AUDIT_MAC_MAP_ADD	1409	/* NetLabel: add LSM domain mapping */
 #define AUDIT_MAC_MAP_DEL	1410	/* NetLabel: del LSM domain mapping */
+#define AUDIT_MAC_IPSEC_ADDSA	1411	/* Add a XFRM state */
+#define AUDIT_MAC_IPSEC_DELSA	1412	/* Delete a XFRM state */
+#define AUDIT_MAC_IPSEC_ADDSPD	1413	/* Add a XFRM policy */
+#define AUDIT_MAC_IPSEC_DELSPD	1414	/* Delete a XFRM policy */
 
 #define AUDIT_FIRST_KERN_ANOM_MSG   1700
 #define AUDIT_LAST_KERN_ANOM_MSG    1799
@@ -377,6 +381,7 @@ extern void auditsc_get_stamp(struct audit_context *ctx,
 			      struct timespec *t, unsigned int *serial);
 extern int  audit_set_loginuid(struct task_struct *task, uid_t loginuid);
 extern uid_t audit_get_loginuid(struct audit_context *ctx);
+extern void audit_log_task_context(struct audit_buffer *ab);
 extern int __audit_ipc_obj(struct kern_ipc_perm *ipcp);
 extern int __audit_ipc_set_perm(unsigned long qbytes, uid_t uid, gid_t gid, mode_t mode);
 extern int audit_bprm(struct linux_binprm *bprm);
@@ -449,6 +454,7 @@ extern int audit_n_rules;
 #define audit_inode_update(i) do { ; } while (0)
 #define auditsc_get_stamp(c,t,s) do { BUG(); } while (0)
 #define audit_get_loginuid(c) ({ -1; })
+#define audit_log_task_context(b) do { ; } while (0)
 #define audit_ipc_obj(i) ({ 0; })
 #define audit_ipc_set_perm(q,u,g,m) ({ 0; })
 #define audit_bprm(p) ({ 0; })
diff --git a/include/net/xfrm.h b/include/net/xfrm.h
index 15ec19d..f699cdc 100644
--- a/include/net/xfrm.h
+++ b/include/net/xfrm.h
@@ -392,6 +392,15 @@ extern int xfrm_unregister_km(struct xfrm_mgr *km);
 
 extern unsigned int xfrm_policy_count[XFRM_POLICY_MAX*2];
 
+/* Audit Information */
+struct xfrm_audit
+{
+	uid_t	loginuid;
+	u32	secid;
+};
+void xfrm_audit_log(uid_t auid, u32 secid, int type, int result,
+		    struct xfrm_policy *xp, struct xfrm_state *x);
+
 static inline void xfrm_pol_hold(struct xfrm_policy *policy)
 {
 	if (likely(policy != NULL))
@@ -906,7 +915,7 @@ static inline int xfrm_state_sort(struct xfrm_state **dst, struct xfrm_state **s
 #endif
 extern struct xfrm_state *xfrm_find_acq_byseq(u32 seq);
 extern int xfrm_state_delete(struct xfrm_state *x);
-extern void xfrm_state_flush(u8 proto);
+extern void xfrm_state_flush(u8 proto, struct xfrm_audit *audit_info);
 extern int xfrm_replay_check(struct xfrm_state *x, __be32 seq);
 extern void xfrm_replay_advance(struct xfrm_state *x, __be32 seq);
 extern void xfrm_replay_notify(struct xfrm_state *x, int event);
@@ -959,13 +968,13 @@ struct xfrm_policy *xfrm_policy_bysel_ctx(u8 type, int dir,
 					  struct xfrm_selector *sel,
 					  struct xfrm_sec_ctx *ctx, int delete);
 struct xfrm_policy *xfrm_policy_byid(u8, int dir, u32 id, int delete);
-void xfrm_policy_flush(u8 type);
+void xfrm_policy_flush(u8 type, struct xfrm_audit *audit_info);
 u32 xfrm_get_acqseq(void);
 void xfrm_alloc_spi(struct xfrm_state *x, __be32 minspi, __be32 maxspi);
-struct xfrm_state * xfrm_find_acq(u8 mode, u32 reqid, u8 proto, 
-				  xfrm_address_t *daddr, xfrm_address_t *saddr, 
+struct xfrm_state * xfrm_find_acq(u8 mode, u32 reqid, u8 proto,
+				  xfrm_address_t *daddr, xfrm_address_t *saddr,
 				  int create, unsigned short family);
-extern void xfrm_policy_flush(u8 type);
+extern void xfrm_policy_flush(u8 type, struct xfrm_audit *audit_info);
 extern int xfrm_sk_policy_insert(struct sock *sk, int dir, struct xfrm_policy *pol);
 extern int xfrm_bundle_ok(struct xfrm_policy *pol, struct xfrm_dst *xdst,
 			  struct flowi *fl, int family, int strict);