[Bug 134971] Clarify kill(2) man-page for permission to "send" signal 0

https://bugzilla.kernel.org/show_bug.cgi?id=134971

Michael Kerrisk [off-list ref] changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
                 CC|                            |mtk.manpages-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org
         Resolution|---                         |CODE_FIX

--- Comment #1 from Michael Kerrisk <mtk.manpages-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> ---

Hello John,

I agree the page could be clearer. What I did was change the paragraph
describing sig==0 to:

       If sig is 0, then no signal is sent, but existence and  permission
       checks  are  still  performed;  this  can be used to check for the
       existence of a process ID or process group ID that the  caller  is
       permitted to signal.

I believe that makes the point clear, so I'll close this for now. Please reopen
if you think there's still a problem.

Thanks,

Michael

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