kAttrQueryVolume
const char* kAttrQueryVolume = "_trk/qryvol1";
if (node.GetAttrInfo(kAttrQueryVolume, &info) == B_OK) {
if (node->GetAttrInfo(kAttrQueryVolume, &info) == B_OK) {
if (node->ReadAttr(kAttrQueryVolume, B_MESSAGE_TYPE, 0, buffer,
if (fFile->WriteAttr(kAttrQueryVolume, B_MESSAGE_TYPE, 0, buffer,
if (modelNode->GetAttrInfo(kAttrQueryVolume, &info) == B_OK) {
&& modelNode->ReadAttr(kAttrQueryVolume, B_MESSAGE_TYPE, 0,