Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6

[pandora-kernel.git] / net / rxrpc / ar-key.c

diff --git a/net/rxrpc/ar-key.c b/net/rxrpc/ar-key.c
index 7e049ff..9a8ff68 100644 (file)
--- a/net/rxrpc/ar-key.c
+++ b/net/rxrpc/ar-key.c
@@ -15,7 +15,7 @@
 #include <linux/module.h>
 #include <linux/net.h>
 #include <linux/skbuff.h>
-#include <linux/key.h>
+#include <linux/key-type.h>
 #include <linux/crypto.h>
 #include <net/sock.h>
 #include <net/af_rxrpc.h>
@@ -40,7 +40,6 @@ struct key_type key_type_rxrpc = {
        .destroy        = rxrpc_destroy,
        .describe       = rxrpc_describe,
 };
-
 EXPORT_SYMBOL(key_type_rxrpc);
 
 /*
@@ -330,5 +329,32 @@ error:
        _leave(" = -ENOMEM [ins %d]", ret);
        return -ENOMEM;
 }
-
 EXPORT_SYMBOL(rxrpc_get_server_data_key);
+
+/**
+ * rxrpc_get_null_key - Generate a null RxRPC key
+ * @keyname: The name to give the key.
+ *
+ * Generate a null RxRPC key that can be used to indicate anonymous security is
+ * required for a particular domain.
+ */
+struct key *rxrpc_get_null_key(const char *keyname)
+{
+       struct key *key;
+       int ret;
+
+       key = key_alloc(&key_type_rxrpc, keyname, 0, 0, current,
+                       KEY_POS_SEARCH, KEY_ALLOC_NOT_IN_QUOTA);
+       if (IS_ERR(key))
+               return key;
+
+       ret = key_instantiate_and_link(key, NULL, 0, NULL, NULL);
+       if (ret < 0) {
+               key_revoke(key);
+               key_put(key);
+               return ERR_PTR(ret);
+       }
+
+       return key;
+}
+EXPORT_SYMBOL(rxrpc_get_null_key);