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Date: Tue, 14 Jan 2003 23:46:44 -0500
From: Mark Mielke <mark@mark.mielke.cc>
To: Bob Miller <rem@osdl.org>
Cc: DervishD <raul@pleyades.net>, Philippe Troin <phil@fifi.org>,
       root@chaos.analogic.com, Linux-kernel <linux-kernel@vger.kernel.org>
Subject: Re: Changing argv[0] under Linux.
Message-ID: <20030115044644.GA18608@mark.mielke.cc>
References: <Pine.LNX.3.95.1030114140811.13496A-100000@chaos.analogic.com> <87iswrzdf1.fsf@ceramic.fifi.org> <20030114220401.GB241@DervishD> <20030114230418.GB4603@doc.pdx.osdl.net> <20030114231141.GC4603@doc.pdx.osdl.net>
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On Tue, Jan 14, 2003 at 03:11:41PM -0800, Bob Miller wrote:
> On Tue, Jan 14, 2003 at 03:04:18PM -0800, Bob Miller wrote:
> > Or you can copy your all your args and env to a temporary place and
> > then re-build your args and env with the new argv[0] in it's place.
> > But you must be carefull that your new argv[0] length plus the 
> > length of all remaining args, envp and pointers is not greater than
> > the system defined size for this space.
> In thinking about this more this will NOT work.  The user stack starts
> right after your envp.  So, writing more info there would blow away
> your stack.

I can smell the next hack... memmove() the stack down to make room... :-)

mark

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