Why the PF_SUPERPRIV flag is cleared?

Parmenides mobile.parmenides at gmail.com
Thu Sep 8 03:47:21 EDT 2011


     When forking a child process, the copy_process() function will by
default clear the PF_SUPERPRIV flag, which indicates whether a process
use superuser privileges. That means a  superuser process will create
a child process does not has superuser privileges. I think the child
process of a superuser process should also be a superuser one, while
the child process of a normal process by default should also be a
normal one (except that the setuid bit of the child executable is turn
on). In both cases it is not necessary that the PF_SUPERPRIV flag to
be cleared.  So, I wonder why the PF_SUPERPRIV flag is cleared by

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