在 Linux 中更改进程名称而不更改 argv[0] [英] Change process name without changing argv[0] in Linux

问题描述

我需要修改我的C语言程序的进程名.
我准确地说，这不是我要更改的线程名称.
我想更改我的程序名称，但我找到的唯一解决方案是修改 argv[0] 的值.
我还用 prctl(PR_SET_NAME, "newname") 找到了另一个解决方案，但这个解决方案不起作用.

解决方案

调用prctl和修改argv[0]的区别在于:

• modify argv[0] 改变/proc/$pid/cmdline中的信息
• 调用prctl(PR_SET_NAME)会改变/proc/$pid/status中的信息

这意味着您将获得发出 ps -a 和 ps -ax 的进程的不同名称.

如果您在执行 ps 时期望不同参数的进程名称相同，则可以同时执行它们(即，更改 argv[0] 并调用 prctl).

希望答案有所帮助.

I need to modify the process name of my program in C language.
I precise, this is not the name of a thread that I want to change.
I want to change the name of my program, but the only solution I found, is to modify the value of argv[0].
I also found another solution with prctl(PR_SET_NAME, "newname"), but this solution doesn't work.

解决方案

The differences between invoking prctl and modify argv[0] are:

• modify argv[0] changes information in /proc/$pid/cmdline
• invoking prctl(PR_SET_NAME) changes information in /proc/$pid/status

That means you will get difference name of your process issuing ps -a and ps -ax.

If you expects same process name for different arguments while executing ps, you can do them both (i.e., change argv[0] and invoke prctl).

Hope the answer helps.

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