是否可以通过编程方式更改UNIX进程的可执行文件名称(ucmd)? [英] is it possible to programatically change an executable name (ucmd) of a unix process?

问题描述

是否可以以编程方式更改ps报告的unix进程的可执行文件名称(ucmd)?

Is it possible to programatically change an executable name (ucmd) of a unix process as reported by ps?

unix/POSIX方法会很好，但是Linux特定的解决方案就足够了.

unix/POSIX way would be nice but Linux specific solution would suffice.

我想更改此处报告的内容

I want to change what is reported here

> ps -o ucmd    
CMD
zsh
ps

不是这个，这我知道;)

not this, this I know ;)

> ps -o command
COMMAND
zsh
ps -o command

谢谢

P.S.并不是试图创建一个rootkit，只是net-snmp在检查进程时会使用此名称，而从init以及直接从/etc/init.d(etc/rcX.d/SNNname代替只是名字).

P.S. Not trying to create a rootkit, its just that net-snmp looks at this name when checking processes and my program has a different name when called from init and directly from /etc/init.d (etc/rcX.d/SNNname instead of just name).

推荐答案

您可以使用prctl()的PR_SET_NAME函数来做到这一点:

You can do this with the PR_SET_NAME function of prctl():

prctl(PR_SET_NAME, (unsigned long)"xyzzy", 0, 0, 0);

但是，/etc/rcX.d/SNNname应该是启动您的进程的脚本(至a的符号链接)，而不是指向进程可执行文件本身的链接.这也可以解决问题.

However, /etc/rcX.d/SNNname should be a (symlink to a) script that starts your process, not a link to the process executable itself. This would also solve the problem.

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