Am 04.02.2016 um 17:42 schrieb Shinose: > > On Thu, Feb 4, 2016 at 7:49 PM, Christian Mauderer > <christian.mauderer@xxxxxxxxxxxxxxxxxx > <mailto:christian.mauderer@xxxxxxxxxxxxxxxxxx>> wrote: > > Am 04.02.2016 um 14:46 schrieb Roland Mainz: > > On Thu, Feb 4, 2016 at 1:40 PM, Christian Mauderer > > <christian.mauderer@xxxxxxxxxxxxxxxxxx > <mailto:christian.mauderer@xxxxxxxxxxxxxxxxxx>> wrote: > >> I am searching a SSH server for remote administration of an embedded > >> application running on RTEMS (https://www.rtems.org). This environment > >> has neither virtual memory nor user and kernel space. So this is like an > >> application running in kernel mode only. > >> > >> Would it be possible to run (a very basic version of) OpenSSH in such an > >> environment using e.g. threads instead of forking new subprocesses? Is > >> there already some known similar configuration (e.g. on another embedded > >> OS)? > > > > Well, not much harder than a port to the original m68k AmigaOS or most > > of the military-oriented embedded OSes... not hard but lots of work > > (unless you have an existing POSIX(-like) layer emulation), mostly > > related to resource tracking and the socket stuff. > > > > Hello Roland, > > thanks for the quick answer. I must have overlooked these ports. I have > mostly seen the list of full Unixes on this page: > > http://www.openssh.com/portable.html > > After your hint, I noted that there are a lot more ports in the sources. > Is there some kind of porting guide or a hint where to begin reading > documentation? > > If we would create a port: Would it be theoretically possible to > contribute it to the official sources? > > For the POSIX-layer: RTEMS implements a part of the POSIX standard (or > at least of the embedded subset of POSIX). But like I said it doesn't > have processes but only threads. > > Kind Regards > > Christian Mauderer > > > Hi, > > We have successfully ported OpenSSH along with SFTP-Server for a > Greenhills platform, where it was only having single address space and > threads. > > But I could say it was really a painful work to resolve the global > variables and data structures to each threads. > > We have used a total of 3 threads including the SFTP Server. > > Thanks, > Shinose. Hello Shinose, thanks for your feedback. It's good to know that it is possible and someone has already done something similar. Kind regards Christian Mauderer -- -------------------------------------------- embedded brains GmbH Christian Mauderer Dornierstr. 4 D-82178 Puchheim Germany email: christian.mauderer@xxxxxxxxxxxxxxxxxx Phone: +49-89-18 94 741 - 18 Fax: +49-89-18 94 741 - 08 PGP: Public key available on request. Diese Nachricht ist keine geschäftliche Mitteilung im Sinne des EHUG. _______________________________________________ openssh-unix-dev mailing list openssh-unix-dev@xxxxxxxxxxx https://lists.mindrot.org/mailman/listinfo/openssh-unix-dev
