On Mon, Nov 23, 2015, at 17:07, Richard Weinberger wrote: > Am 23.11.2015 um 21:04 schrieb Balaco Baco: > > 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. > > This has 0 do to with UML. SLIRP is a very old user space tool. :) > > > Is TPC/IP supported? In theory, TPC happens above IP communication > > layer. So, should it work? > > TPC? >
That's just a typo, of course. > > 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? > > You can also use Internet. > I cannot. I have showed this with the attached with details in the complete session attached file. I can ping 127.0.0.1 (the host) but cannot ping any other IP addresses. May you help me find out the reason? If you need more information that I have sent in the attached file, please ask me. -- http://www.fastmail.com - Accessible with your email software or over the web ------------------------------------------------------------------------------ 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
