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Re: killing setuid programs

From: Samuel Thibault
Subject: Re: killing setuid programs
Date: Tue, 29 Aug 2006 02:39:40 +0200
User-agent: Mutt/1.5.12-2006-07-14

Roland McGrath, le Mon 28 Aug 2006 17:34:24 -0700, a écrit :
> It sounds like you are describing the intended behavior.
> You can't send a signal to a setuid program with kill.

  For a process to have permission to send a signal to a process designated
  by pid, unless the sending process has appropriate privileges, the real or
  effective user ID of the sending process shall match the real or saved
  set-user-ID of the receiving process.

And setuid programs keep the real user ID set to Joe user's, so that Joe
user can kill the program he launches.


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