操作系统：二进制文件系统

unsigned long FileSystem::mapAddr(unsigned int id) { unsigned long addr; addr = this->IN_Start+sizeof(DInode)*(id-1); return addr; } void FileSystem::SaveSuperBlock() { fseek(fd, 0, 0); fwrite(&sb, 1, sizeof(SuperBlock), fd); } FileSystem::~FileSystem() {} FileSystem::FileSystem() { strcpy(this->Disk_Name, "FileSystem.disk"); this->LoginNum = 0; this->IN_Start = BlockSize * 2; this->Data_Start = BlockSize * (2 + 400); this->GroupSize = 50; }