read_bootblock_from_disk
if (read_bootblock_from_disk(dev_fd, &bblock_disk) != BC_SUCCESS) {
ret = read_bootblock_from_disk(device->fd, bblock);
static int read_bootblock_from_disk(int, ib_bootblock_t *);
ret = read_bootblock_from_disk(curr_device->fd, bblock_curr);