On Mon, Nov 23, 2015, at 16:38, Richard Weinberger wrote: > Am 23.11.2015 um 20:04 schrieb Balaco Baco: > > On Mon, Nov 23, 2015, at 13:35, Richard Weinberger wrote: > >> Am 22.11.2015 um 16:39 schrieb Balaco Baco: > >>>>>>>>> Since I have no root access in the host machine, I must use 'slirp'. > >>>>>>>>> Right? Now I'll install it (https://en.wikipedia.org/wiki/Slirp) > >>>>>>>>> from > >>>>>>>>> source and pass the full path to UML in the command line, e.g.: > >>>>>>>> > >>>>>>>> Yes. > >>>>>>>> > >>>>>>>>> eth0=slirp,,/home/me/bin/ > >>>>>>>> > >>>>>>>> Documentation says: ethn=slirp,ethernet address,slirp path > >>>>>>>> > >>>>>>>> That said, the slirp tool is old and AFIAK unmaintained. > >>>>>>>> qemu forked it a long time ago and has it integrated into its > >>>>>>>> source. > >>>>>>>> > >>>>>>> > >>>>>>> Documentation of UML also said that ethernet address is optional. I > >>>>>>> did > >>>>>>> both ways, none worked (and it took me a few minutes and tries to find > >>>>>>> out that not all MAC addresses are possible to use for a virtual > >>>>>>> machine > >>>>>>> like UML; is this at least mentioned in some UML doc? It shouls, > >>>>>>> IMHO). > >>>>>>> > >>>>>>> So, is it possible that I run an UML with full Internet access, and > >>>>>>> without having root access in the host machine? Or am I trying > >>>>>>> something > >>>>>>> that from the start was not possible? > >>>>>>> > >>>>>>> If it is not possible, is it easy to set up some form of file sharing > >>>>>>> between the host and UML machine? (again, this must *not* depend on > >>>>>>> host > >>>>>>> root access!) > >>>>>> > >>>>>> As I said, if you don't have root on the host, you have to use slirp. > >>>>>> > >>>>> > >>>>> And I am using slirp. But it do not work yet. I'm not sure what is > >>>>> wrong. May you help me? > >>>> > >>>> Just gave it a try. Works here. > >>>> > >>>> ./linux ubda=../Downloads/Debian-Squeeze-AMD64-root_fs mem=1G > >>>> eth0=slirp,FE:FD:01:02:03:04,/home/rw/work/slirp/slirp-1.0.17/src/slirp > >>>> > >>>> root@uml:~# ifconfig eth0 10.0.2.15 up > >>>> root@uml:~# route add default gw 10.0.2.15 > >>> > >>> Do not work for me. And to point directly to the slirp program instead > >>> of its folder (which is understood by many as the *path* for anything, > >>> not the things themselves, with full path) is news for me, and something > >>> that should be pointed in the docs. I think many others will understand > >>> it as I did before you said this. > >> > >> "Does not work" is not a valid error description. > >> Please find out what exactly does not work. > > > > There is no clear error. In this paragraph I just pointed to something > > in the instructions that mislead me to give the path to the folder > > *where* slirp was, instead of the slip program itself, its file. The > > most I could see that did not work I said right after, below in the > > previous message. Please assume and try to see that I'm trying my best > > to follow your directions, but I still could not do it although you just > > said you did. > > > > You may also ask me to directly do things or steps that you do (maybe > > it's something I don't know or do that make it don't work). > > > > > >>> Now there is a few lines about slirt and ETH0: > >>> > >>> ======================= > >>> [autodetect SLIP/CSLIP, MTU 1500, MRU 1500, 115200 baud] > >>> > >>> SLiRP Ready ... > >>> Unsupported device type 256 for "eth0" > >>> Failed to bring up eth0. > >>> done. > >>> > >>> ======================== > >> > >> DHCP cannot work on SLIRP. > >> That's why you have to configure the interface manually. > >> > >>> What can I do? > >>> > > > > If configure the interface manually is to type the commands (inside UML) > > below, that I did before: > > > > root@uml:~# ifconfig eth0 10.0.2.15 up > > root@uml:~# route add default gw 10.0.2.15 > > > > It did not work. > > > > What information is useful for you? I don't know. So, since you seem to > > have thought I did not try enough before, now I'm sending the whole boot > > log, and each step I did before and repeated right now, after I read > > your message. > > > > > >>>> Then you can use networking. Please not that slirp does not have a > >>>> performance. > >>>> Depending on your slirp package you can tweak it. > >>> > >>> I have compiled it from source. Do you know exactly where and how I can > >>> tweak it? If so, please say how, so I don't have to search and find what > >>> is already known. > >> > >> AFAIK Debian folks have some patches in their package. > > > > I choose the best distro I know for the intended uses (RedHat and sister > > is usually not that good, but I don't discard using them to start). I > > did not use Fedora or RedHat that even the blog shows because I don't > > want and don't need graphical interface. Just CLI is perfect, just fine. > > > > If you can point which patch or which feature Debian patched I can work > > around it. Right now I know that it may have some problem, but I can > > even look for help my self or anywhere else because I don't know what it > > is - not much clues I can tell. > > > >> Thanks, > >> //richard > > > > Ironically, doing the same steps I did before it seemed to work today. > > :-/ I hate when this happens... hopefully it won't stop tomorrow, with > > another ironic happening. > > > > Now, with a close to work situaton, I guessed that it just needed to > > find the DNS the host uses (easy, fine), and then I repeat the route add > > command. But this is not true. Before I update UML's /etc/resolv.conf > > the only IP I can ping from UML is 127.0.0.1. What else do I need to do > > to have network in UML? > > ICMP is not supported on SLIRP. Only UDP and TCP. >
What does this mean? Please explain a bit more clearly to me. I don't have much knowledge as you with UML and Kernel related (low system) things. Is TPC/IP supported? In theory, TPC happens above IP communication layer. So, should it work? The network you said you had is the same as I just saw/did? Although I can communicate with the host, I won't be able to use its Internet connection? -- http://www.fastmail.com - The way an email service should be ------------------------------------------------------------------------------ Go from Idea to Many App Stores Faster with Intel(R) XDK Give your users amazing mobile app experiences with Intel(R) XDK. Use one codebase in this all-in-one HTML5 development environment. Design, debug & build mobile apps & 2D/3D high-impact games for multiple OSs. http://pubads.g.doubleclick.net/gampad/clk?id=254741551&iu=/4140 _______________________________________________ User-mode-linux-user mailing list User-mode-linux-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/user-mode-linux-user
