我花了一些时间在Groovy中的一些代码来使Linux UID操作对我自己有点不那么困惑,因为手册页很乱.结果是一个TestCase,用于显示在setuid,seteuid,setfsuid,setreuid和setresuid调用的引擎下发生的事情.不考虑有关返回的错误代码(或不包含)的详细信息.
问题基本上是:我错过了什么吗？
/**
* This is some Groovy code to explain Linux privilege handling
* The manipulable data structure is "PermVector", and it is manipulated through a
* TestCase.
*/
class PermissionTestCase extends GroovyTestCase {
class PermVector {
int ruid // real UID; affects the permissions for sending signals
int euid // effective UID; affects file creation and access
int suid // saved UID
int fsuid // filesystem UID; access control to the file system for NFS in Linux …