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From: gazelle@shell.xmission.com (Kenny McCormack)
Newsgroups: comp.unix.programmer
Subject: Re: Why does getppid() still return old parent pid after setsid()?
Date: Mon, 11 Nov 2024 20:15:05 -0000 (UTC)
Organization: The official candy of the new Millennium
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References: <vgl8h1$385vs$1@dont-email.me> <vgn9q2$8mls$1@news.xmission.com> <vgtdm4$11fog$2@dont-email.me>
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In article <vgtdm4$11fog$2@dont-email.me>,
Lew Pitcher  <lew.pitcher@digitalfreehold.ca> wrote:
....
>Kenny, could you elaborate on the use of prctl() to "reparent" a process?
>I've not seen examples of how to do this, and the prctl(2) manpage doesn't
>explicitly indicate the options necessary.
>
>I don't see any option that controls or modifies a process PPID. The only
>prctl(2) options that I can see relating to "reparenting" are the
>PR_SET_CHILD_SUBREAPER and PR_GET_CHILD_SUBREAPER options that
>seem to govern who gets SIGCHLD on the child's death. Is this what you
>mean by "reparenting"? 

Yes, that's it.  The man page text even includes the word 'reparented'.

Note;  I've never actually used this call, but I can imagine situations
where it could be used.  The man page seems pretty clear as to what it does.

-- 
    The difference between communism and capitalism?
    In capitalism, man exploits man. In communism, it's the other way around.

	- Daniel Bell, The End of Ideology (1960) -