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Diffstat (limited to 'net/xfrm/xfrm_policy.c')
-rw-r--r--net/xfrm/xfrm_policy.c63
1 files changed, 60 insertions, 3 deletions
diff --git a/net/xfrm/xfrm_policy.c b/net/xfrm/xfrm_policy.c
index 64a375178c5f..157bfbd250ba 100644
--- a/net/xfrm/xfrm_policy.c
+++ b/net/xfrm/xfrm_policy.c
@@ -834,11 +834,67 @@ struct xfrm_policy *xfrm_policy_byid(u8 type, int dir, u32 id, int delete,
}
EXPORT_SYMBOL(xfrm_policy_byid);
-void xfrm_policy_flush(u8 type, struct xfrm_audit *audit_info)
+#ifdef CONFIG_SECURITY_NETWORK_XFRM
+static inline int
+xfrm_policy_flush_secctx_check(u8 type, struct xfrm_audit *audit_info)
{
- int dir;
+ int dir, err = 0;
+
+ for (dir = 0; dir < XFRM_POLICY_MAX; dir++) {
+ struct xfrm_policy *pol;
+ struct hlist_node *entry;
+ int i;
+
+ hlist_for_each_entry(pol, entry,
+ &xfrm_policy_inexact[dir], bydst) {
+ if (pol->type != type)
+ continue;
+ err = security_xfrm_policy_delete(pol);
+ if (err) {
+ xfrm_audit_log(audit_info->loginuid,
+ audit_info->secid,
+ AUDIT_MAC_IPSEC_DELSPD, 0,
+ pol, NULL);
+ return err;
+ }
+ }
+ for (i = xfrm_policy_bydst[dir].hmask; i >= 0; i--) {
+ hlist_for_each_entry(pol, entry,
+ xfrm_policy_bydst[dir].table + i,
+ bydst) {
+ if (pol->type != type)
+ continue;
+ err = security_xfrm_policy_delete(pol);
+ if (err) {
+ xfrm_audit_log(audit_info->loginuid,
+ audit_info->secid,
+ AUDIT_MAC_IPSEC_DELSPD,
+ 0, pol, NULL);
+ return err;
+ }
+ }
+ }
+ }
+ return err;
+}
+#else
+static inline int
+xfrm_policy_flush_secctx_check(u8 type, struct xfrm_audit *audit_info)
+{
+ return 0;
+}
+#endif
+
+int xfrm_policy_flush(u8 type, struct xfrm_audit *audit_info)
+{
+ int dir, err = 0;
write_lock_bh(&xfrm_policy_lock);
+
+ err = xfrm_policy_flush_secctx_check(type, audit_info);
+ if (err)
+ goto out;
+
for (dir = 0; dir < XFRM_POLICY_MAX; dir++) {
struct xfrm_policy *pol;
struct hlist_node *entry;
@@ -891,7 +947,9 @@ void xfrm_policy_flush(u8 type, struct xfrm_audit *audit_info)
xfrm_policy_count[dir] -= killed;
}
atomic_inc(&flow_cache_genid);
+out:
write_unlock_bh(&xfrm_policy_lock);
+ return err;
}
EXPORT_SYMBOL(xfrm_policy_flush);
@@ -2583,4 +2641,3 @@ restore_state:
}
EXPORT_SYMBOL(xfrm_migrate);
#endif
-

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