open_node
extern int open_node(Node *node, int mode);
if ((fDevice = open_node(partition, O_RDONLY)) < B_OK)
fDevice = open_node(partition, O_RDONLY);
if ((fDevice = open_node(partition, O_RDONLY)) < B_OK)
int fd = open_node(device, O_RDONLY);
fFD = open_node(node, mode);
int fd = open_node(node, mode);