openssh unix dev - Apr 2007 - where is the point the client command is executed?

Hi,

I met some difficult in reading ssh/sshd souce code, I want to
find out how the command that user input in client is executed on the
server. I only found out the process_input function put the command in a
buffer,but can not find how it is executed. Could you please help me on
that?
Thank you very much.
        
        
B Rgds,
Kexin

Zhang Kexin wrote:
> Hi,
> 
> I met some difficult in reading ssh/sshd souce code, I want to
> find out how the command that user input in client is executed on the
> server. I only found out the process_input function put the command in a
> buffer,but can not find how it is executed. Could you please help me on
> that?
You mean when you run "ssh someserver echo foo" or similar?

Look in session.c in do_exec() and do_exec_no_pty().  Ultimately it will 
end up running the command via the user's shell via execve(1) after 
setting up its environment, descriptors and such.
> Thank you very much.
You're welcome.

-- 
Darren Tucker (dtucker at zip.com.au)
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     Good judgement comes with experience. Unfortunately, the experience
usually comes from bad judgement.