pkg/subsystem: restructure the package

Remove the entity and match subpackages.

Regenerate the linux.go file.

1 files changed, 51 insertions, 0 deletions

diff --git a/pkg/subsystem/match_test.go b/pkg/subsystem/match_test.go
new file mode 100644
index 000000000..7c96b0bcd
--- /dev/null
+++ b/pkg/subsystem/match_test.go
@@ -0,0 +1,51 @@
+// 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 subsystem
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestPathMatcher(t *testing.T) {
+	arm := &Subsystem{
+		PathRules: []PathRule{
+			{
+				IncludeRegexp: `^arch/arm/.*$`,
+				ExcludeRegexp: `^arch/arm/boot/dts/.*$`,
+			},
+			{IncludeRegexp: `^drivers/spi/spi-pl022\.c$`},
+			{
+				// nolint:lll
+				IncludeRegexp: `^drivers/irqchip/irq-vic\.c$|^Documentation/devicetree/bindings/interrupt-controller/arm,vic\.yaml$`,
+			},
+		},
+	}
+	docs := &Subsystem{
+		PathRules: []PathRule{
+			{IncludeRegexp: `^Documentation/.*$`},
+		},
+	}
+	m := MakePathMatcher([]*Subsystem{arm, docs})
+	assert.ElementsMatch(t, []*Subsystem{arm, docs},
+		m.Match(`Documentation/devicetree/bindings/interrupt-controller/arm,vic.yaml`))
+	assert.ElementsMatch(t, []*Subsystem{arm}, m.Match(`arch/arm/a.c`))
+	assert.ElementsMatch(t, []*Subsystem{docs}, m.Match(`Documentation/a/b/c.md`))
+	assert.Empty(t, m.Match(`arch/boot/dts/a.c`))
+}
+
+func TestPathMatchOrder(t *testing.T) {
+	s := &Subsystem{
+		PathRules: []PathRule{
+			{
+				IncludeRegexp: `^a/b/.*$`,
+				ExcludeRegexp: `^a/.*$`,
+			},
+		},
+	}
+	m := MakePathMatcher([]*Subsystem{s})
+	// If we first exclude a/, then a/b/c never matches.
+	assert.Empty(t, m.Match("a/b/c"))
+}