Improve file copy on copyfile_darwin

Make use of unix.CloneFile()

pkg/machinedriver/copyfile_darwin.go

@@ -0,0 +1,17 @@
+package macadam
+
+import (
+	crcos "github.com/crc-org/crc/v2/pkg/os"
+	"golang.org/x/sys/unix"
+)
+
+func copyFile(src, dst string) error {
+	if err := unix.Clonefile(src, dst, 0); err != nil {
+		// fall back to a regular sparse copy, the error may be caused by the filesystem not supporting unix.CloneFile
+		if err := crcos.CopyFileSparse(src, dst); err != nil {
+			return err
+		}
+	}
+
+	return nil
+}

pkg/machinedriver/copyfile_nondarwin.go

@@ -0,0 +1,11 @@
+//go:build !darwin
+
+package macadam
+
+import (
+	crcos "github.com/crc-org/crc/v2/pkg/os"
+)
+
+func copyFile(src, dst string) error {
+	return crcos.CopyFile(src, dst)
+}

pkg/machinedriver/crcimageprovider.go

@@ -8,7 +8,6 @@ import (
 
 	"github.com/containers/podman/v5/pkg/machine/define"
 	"github.com/containers/podman/v5/pkg/machine/vmconfigs"
-	crcos "github.com/crc-org/crc/v2/pkg/os"
 )
 
 type CrcImagePuller struct {
@@ -93,7 +92,7 @@ func (puller *CrcImagePuller) Download() error {
 
 	slog.Info(fmt.Sprintf("%+v", puller))
 	slog.Info("file copy", "source", puller.sourcePath, "dest", imagePath.GetPath())
-	if err := crcos.CopyFile(puller.sourcePath, imagePath.GetPath()); err != nil {
+	if err := copyFile(puller.sourcePath, imagePath.GetPath()); err != nil {
 		return err
 	}
 	/*