int *bucket = (int*)calloc(max + 1, sizeof(int));
圖像來源，GREG BAKER/AFP via Getty Images
，更多细节参见旺商聊官方下载
The critical thing to understand is namespaces are visibility walls, not security boundaries. They prevent a process from seeing things outside its namespace. They do not prevent a process from exploiting the kernel that implements the namespace. The process still makes syscalls to the same host kernel. If there is a bug in the kernel’s handling of any syscall, the namespace boundary does not help.
我的中文學習旅程則是用截然不同的方式開始的。