编程方式正从用户名UID和GID在Unix中？ [英] Programatically getting UID and GID from username in Unix?

问题描述

我想使用的setuid（）和setgid（）设置程序的各自的ID从根本放弃特权下来，而是利用他们，我需要知道我要改变用户的UID和GID到

I'm trying to use setuid() and setgid() to set the respective id's of a program to drop privileges down from root, but to use them I need to know the uid and gid of the user I want to change to.

有一个系统调用来做到这一点？我不想硬code或从/ etc / passwd文件解析。

Is there a system call to do this? I don't want to hardcode it or parse from /etc/passwd .

另外，我想这样做编程，而不是使用：

Also I'd like to do this programatically rather than using:

ID -u用户名

任何帮助将大大AP preciated

Any help would be greatly appreciated

推荐答案

有一个看 getpwnam（）和 getgrnam（）功能。

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