pkg/host: explain why syscalls are disabled

1 files changed, 45 insertions, 0 deletions

diff --git a/pkg/host/host_test.go b/pkg/host/host_test.go
new file mode 100644
index 000000000..470a6e5e1
--- /dev/null
+++ b/pkg/host/host_test.go
@@ -0,0 +1,45 @@
+// Copyright 2015 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 host
+
+import (
+	"runtime"
+	"testing"
+
+	"github.com/google/syzkaller/prog"
+	_ "github.com/google/syzkaller/sys"
+)
+
+func TestLog(t *testing.T) {
+	t.Parallel()
+	target, err := prog.GetTarget(runtime.GOOS, runtime.GOARCH)
+	if err != nil {
+		t.Fatal(err)
+	}
+	// Dump for manual inspection.
+	supp, disabled, err := DetectSupportedSyscalls(target, "none")
+	if err != nil {
+		t.Skipf("skipping: %v", err)
+	}
+	for c, ok := range supp {
+		if !ok {
+			t.Fatalf("map contains false value for %v", c.Name)
+		}
+	}
+	t.Logf("unsupported:")
+	for c, reason := range disabled {
+		t.Logf("%v: %v", c.Name, reason)
+	}
+	trans := target.TransitivelyEnabledCalls(supp)
+	t.Logf("\n\ntransitively unsupported:")
+	for _, c := range target.Syscalls {
+		s, ok := trans[c]
+		if ok && !s {
+			t.Fatalf("map contains false value")
+		}
+		if !s && supp[c] {
+			t.Logf("%v", c.Name)
+		}
+	}
+}