Tighten support bundles and fix AMD runtime checks

audit/internal/platform/export_test.go

@@ -0,0 +1,56 @@
+package platform
+
+import (
+	"os"
+	"os/exec"
+	"path/filepath"
+	"testing"
+)
+
+func TestExportFileToTargetUnmountsExistingMountpoint(t *testing.T) {
+	t.Parallel()
+
+	tmp := t.TempDir()
+	src := filepath.Join(tmp, "bundle.tar.gz")
+	mountpoint := filepath.Join(tmp, "mnt")
+	if err := os.MkdirAll(mountpoint, 0755); err != nil {
+		t.Fatalf("mkdir mountpoint: %v", err)
+	}
+	if err := os.WriteFile(src, []byte("bundle"), 0644); err != nil {
+		t.Fatalf("write src: %v", err)
+	}
+
+	var calls [][]string
+	oldExec := exportExecCommand
+	exportExecCommand = func(name string, args ...string) *exec.Cmd {
+		calls = append(calls, append([]string{name}, args...))
+		return exec.Command("sh", "-c", "exit 0")
+	}
+	t.Cleanup(func() { exportExecCommand = oldExec })
+
+	s := &System{}
+	dst, err := s.ExportFileToTarget(src, RemovableTarget{
+		Device:     "/dev/sdb1",
+		Mountpoint: mountpoint,
+	})
+	if err != nil {
+		t.Fatalf("ExportFileToTarget error: %v", err)
+	}
+	if got, want := dst, filepath.Join(mountpoint, "bundle.tar.gz"); got != want {
+		t.Fatalf("dst=%q want %q", got, want)
+	}
+	if _, err := os.Stat(filepath.Join(mountpoint, "bundle.tar.gz")); err != nil {
+		t.Fatalf("exported file missing: %v", err)
+	}
+
+	foundUmount := false
+	for _, call := range calls {
+		if len(call) == 2 && call[0] == "umount" && call[1] == mountpoint {
+			foundUmount = true
+			break
+		}
+	}
+	if !foundUmount {
+		t.Fatalf("expected umount %q call, got %#v", mountpoint, calls)
+	}
+}