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? > 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. Thanks, //richard ------------------------------------------------------------------------------ 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
