treewide: add license header and enable haslicense linter
Change-Id: I873a8d4082d75e8f813d8a726a41187eea7a065e
Reviewed-on: https://review.monogon.dev/c/monogon/+/3825
Tested-by: Jenkins CI
Reviewed-by: Leopold Schabel <leo@monogon.tech>
diff --git a/osbase/net/dns/forward/cache/cache.go b/osbase/net/dns/forward/cache/cache.go
index 8c151a6..114939b 100644
--- a/osbase/net/dns/forward/cache/cache.go
+++ b/osbase/net/dns/forward/cache/cache.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
// Package cache implements a cache. The cache hold 256 shards, each shard
// holds a cache: a map with a mutex. There is no fancy expunge algorithm, it
// just randomly evicts elements when it gets full.
diff --git a/osbase/net/dns/forward/cache/cache_test.go b/osbase/net/dns/forward/cache/cache_test.go
index 8a2b80c..5542158 100644
--- a/osbase/net/dns/forward/cache/cache_test.go
+++ b/osbase/net/dns/forward/cache/cache_test.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
package cache
// Taken and modified from CoreDNS, under Apache 2.0.
diff --git a/osbase/net/dns/forward/cache/shard_test.go b/osbase/net/dns/forward/cache/shard_test.go
index 452f8cc..f8e3153 100644
--- a/osbase/net/dns/forward/cache/shard_test.go
+++ b/osbase/net/dns/forward/cache/shard_test.go
@@ -1,3 +1,6 @@
+// Copyright The Monogon Project Authors.
+// SPDX-License-Identifier: Apache-2.0
+
package cache
// Taken and modified from CoreDNS, under Apache 2.0.