pkg/subsystem: add the path matching code

Additionally, optimize the matching by joining the rules without
exclusion (that is, almost all MAINTAINER records).

1 files changed, 15 insertions, 0 deletions

diff --git a/pkg/subsystem/entity/entities.go b/pkg/subsystem/entity/entities.go
new file mode 100644
index 000000000..6d028e391
--- /dev/null
+++ b/pkg/subsystem/entity/entities.go
@@ -0,0 +1,15 @@
+// Copyright 2023 syzkaller project authors. All rights reserved.
+// Use of this source code is governed by Apache 2 LICENSE that can be found in the LICENSE file.
+
+package entity
+
+type Subsystem struct {
+	PathRules []PathRule
+}
+
+// PathRule describes the part of the directory tree belonging to a single subsystem.
+type PathRule struct {
+	IncludeRegexp string
+	// ExcludeRegexps are tested before IncludeRegexp.
+	ExcludeRegexp string
+}