First, PLEASE learn how to send emails: ~72 columns and separate paragraphs with a blank line and no html.
On Tue, Nov 21, 2000 at 04:20:42AM +0100, Henning Riedel wrote: > As far as I got looking on Hurd-pages I realize, that documentation isn't > really going any further. > Though, because I have to talk about this OS in school, I'd like to find > something about the basics. > When I got it right, there is now the Mach4- microkernel sitting on top of > the hardware, right? No GNU/Mach or oskit-mach. The latter is derived from the former which is turn is derived from Utah's Mach 4. > And if I got it right, the device drivers are still in kernel space. > Also there are servers in user space, which do the basic parts, like IO > (network, fs, etc.). Yes and yes. > Could somebody tell me the difference between translators and servers, > please. There seems to be a difference, as I read through the > http://www.debian.org/ports/hurd-doc-server.html . You of course mean this url: http://www.debian.org/ports/hurd/hurd-doc-server And no, there is no difference. > Next thing, in the article "Toward a New Strategy of OS Design" [1] Trent > Fisher (?) said, on the auth.-server anybody can use its own trusted > auth-server. So, how does he know that this specific auth-server is safe or > where does he get his own trusted auth-server?? Thomas Bushnell. Everyone, i.e. processes, knows where the trusted auth server is. > And, there is something I really don't know how to find out (except walking > through the whole gnumach-code for months!): What are the main changes to the > CMU Mach kernel you made, 'cause somebody said it's a modified CMU > Mach-microkernel. Are these differences what's talked about in the article > [1] at Part1 or what did you guys do? >From what I understand essentially device drivers. > I might present in my presentation some datastructures and library functions > which mach offers to programmers. > Are you still using the libthreads-library or are you already using POSIX > pthreads? Are you using the "Microkernel Object Library" libmom already? Still using cthreads. libmom has not been developed for a while. > In libports: there are buckets (port sets) and classes (???) what is the > difference, how should I interprete classes? A port class defines how a ``type'' of port is destroyed etc. A port bucket is a collection of ports (of any class). > When I looked through the Mch-documentation, there was something about > running UNIX in a single-server on top of Mach. How do you do this? Is this > the combination of proc- and exec-server and the GNU-C-library? Is this also > a single-server or is it a multi-server? The hurd is a multi server operating system, not a single server. Think of a monolithic kernel and separate it into two: a microkernel and everything else. When ``everything else'' lives in a single user space task, you have a single server operating system. When ``everything else'' is divided into servers, e.g. auth, proc, exec, ext2fs, nfs, tcpip, etc, you have a multi server operating system. > Oh, almost forgot to ask. I tried to install a Hurd-system, which was on a CD > in the freeX-magazin 4/00. > I got GRUB looking on my harddisk an he found the gnumach.gz and the > server.gz. After the mach tells me that on the DC390T there is no EPROM to > rread from (actually it's a DawiControl DC2974 with AM53C974) he stops > and the system is frozen. Somebody told me that it might be my NE2000-PCI > networkcard. Can I somehow tell the kernel not to load somekind of > device-driver or do I have to build a new kernel myself? Sounds like irq sharing or some such. First, try the latest gnumach. -Neal -- Neal H Walfield University of Massachusetts at Lowell [EMAIL PROTECTED] or [EMAIL PROTECTED]
