CheckCancel
if (CheckCancel(progress)) {
if (CheckCancel(0) || (fd = open((char*)wkernel_name, O_RDONLY)) < 0) {
if (CheckCancel(0) || getinfo(fd, &start, &end) < 0) {
if (CheckCancel(0) || vmem_init(start, end) < 0) {
if (CheckCancel(0) || loadfile(fd, &start) < 0) {
if (CheckCancel(-1)) {
BOOL CheckCancel(int progress);