Single-address space, no processes?

[Matt Johnston]

Hi Sebastian,

Dropbear probably won't fit without some modifications, though likely wouldn't be that hard to get working with only a single connection at a time. There's a global state variable, and may be a few other assumptions that the vforked child is going to exec() (like uClinux).
Recent releases have better memory cleanup on exit, though there may still be some circumstances where heap memory is leaked - the code was originally written assuming exit() would clean it up.


Cheers,
Matt


> On Wed 23/12/2015, at 9:31 pm, Sebastian Huber <sebastian.huber at embedded-brains.de> wrote:
> 
> Hello,
> 
> I would like to use SSH to do some remote administration for an application running with the RTEMS real-time operating system. In this environment we have no virtual memory and user and kernel space separation. So this is like an application running in kernel mode only. Is it in possible to use the dropbear SSH server in such an environment? A quick grep showed that fork() is used for example to spawn new processes. Would it be possible to spawn a new thread instead (e.g. via pthread_create())?
> 
> -- 
> Sebastian Huber, embedded brains GmbH
> 
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>