Method to_ptr

kernel/oswrapper/vspace.h:287–292

    segments[seg] = mmap_segment(seg);
  }
  inline void *to_ptr(vaddr_t vaddr) {
    if (vaddr == VADDR_NULL)
      return NULL;
    ensure_is_mapped(vaddr);
    return segment(vaddr).ptr(segaddr(vaddr));
  }
  size_t filesize();
  Status init(int fd);
  Status init();