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2323 discussions

Chaos Communication Camp in August
by Norman Feske 26 Jul '15

26 Jul '15

Hello, does anyone of you consider attending the Chaos Communication Camp [1] this year? I know that Stefan will be there. I'm still on undecided. The chance to meet others from the Genode community would ultimately convince me to join in. :-) [1] https://events.ccc.de/tag/chaos-communication-camp/ Cheers Norman -- Dr.-Ing. Norman Feske Genode Labs http://www.genode-labs.com · http://genode.org Genode Labs GmbH · Amtsgericht Dresden · HRB 28424 · Sitz Dresden Geschäftsführer: Dr.-Ing. Norman Feske, Christian Helmuth

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Security compartmentalisation
by Thotheolh Tay 26 Jul '15

26 Jul '15

Hi, I would like some help understanding the below described scenario. An L4Linux/Genode/Fiasco.OC is used as the secure environment. If a malware is executed on a process thread on the L4Linux layer, say to scrape the L4Linux to do memory dumps or to access the filesystem for crypto key files, how will the above setup protect against a malicious process thread ? An example being a PGP email crypto program running on a process thread with another process thread infected by a malware. Thanks & Regards, Thoth.

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RE: USB armory USB driver - porting
by Vladimir Lushnikov 24 Jul '15

24 Jul '15

Hello all, It has taken a lot longer than I hoped initially, but I have some progress to report on the USB driver port for the USB armory. The current state is that the controller bringup looks like it *does something* but the functionality (and device hotplugging) does not work. My current code is in here: https://github.com/vladimir-lu/genode/tree/issue/imx53_usb_host_staging As I mentioned, upon hotplugging a device (tested with a memory stick and of course the official host adapter) - there seems to be no log activity, but when the memory stick is plugged in from boot time it at least recognises that there is something connected to the port. The two log files are here: https://gist.github.com/anonymous/101496bdfb266b460e51 The relevant line in the log is: [init -> usb_drv] dev_dbg: state 7 ports 1 chg 0002 evt 0000 vs (in the non-recognised case) [init -> usb_drv] dev_dbg: state 7 ports 1 chg 0000 evt 0000 I do not have any good ideas at the moment where to go next with debugging this problem - can anyone suggest places to look? I guessed that the issue is in the clock setup, but writing to the Usboh3_60M and Usbphy1 in Ccgr2 and Ccgr4 respectively does not seem to make any difference. The usb phy has no tranceiver on this platform so does not need enabling. The OTG port is being used for host mode. As you may notice, the platform.cc now contains a few header definitions + functions that I copy+pasted from the wifi driver but did not want to put in lx_emul.cc - is that correct or should I just stick them in linux_emul.cc for all to use? I have also run the input-test and that does not print any events received. One interesting line comes out after a few seconds however: [init -> usb_drv] dev_dbg: debounce: port 1: total 2000ms stable 0ms status 0x401 I want to get host mode working before I start with the OTG + gadget porting (there is some diff primarily in the OTG stuff between 3.14.5 and 4.0 so I am not sure how much of 3.14.5 will actually "work" without getting a 3.14.5 kernel running on the armory first...) Kind regards, Vladimir

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Cuystomizing additional libraries and features on Fiasco.OC/L4Linux
by Thotheolh Tay 15 Jul '15

15 Jul '15

Hi, How do I add/customize the L4Linux so that the next time I build the ISO and boot it, it will have the programs I customized it for ? An example is to add GCC and GNU Make so that when it boots on ISO, I would have the ability to script C/C++ and Make on the booted L4Linux ? -- +---------------------------------------------------------+ | PGP Secure Email Key ID:6FBFC19D | +---------------------------------------------------------+

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sendmsg in libc_lwip
by Mohammad Hamad 13 Jul '15

13 Jul '15

hello, I am looking in plugin implementation to have deep understand about it. my objective is to implement the "sendmsg" function. i was able to mange it but when i am compiling i got error message tell me that the " struct msghdr and iovec" were defined twice ! . I add the the definition of struct msghdr and struct iovec in /include /lwip/lwip/sockets.h and they are already defined in /libc/sys/socket.h . i am really confused since there are many data types defined in the both headers (e.g sockadd) and libc_lwip was never complained ! best,

2 2

Joining Filesystems
by Nobody III 12 Jul '15

12 Jul '15

I have been thinking about writing a file manager for Genode. This has led me to some questions: Is there already any file manager currently being written? What is the best way of joining multiple filesystems into a single tree? (Or should I be doing something different?) Which libraries/files/functions should I use? I think Boost Filesystems should be ported to Genode at some point, so I might want to use that. How difficult would that be? Or should not add that as a dependency? What's the best way to scan a directory for files and other directories? How much file type detection (and file preview) is safe? Also, I may want to use threading. Are C++11 threads supported?

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Gopher protocol server
by unknown＠example.com 11 Jul '15

11 Jul '15

For anyone looking to browse file systems on Genode over a network, I have a Gopher protocol server. Its not very well tested (or thought out), so I'm keeping it in my feature repo at app/gopher_server. https://github.com/ehmry/genode-emery My only use for it so far has been writing logs to a ram_fs, then reading them with lynx. Gopher is a more or less dead protocol, but its also dead simple. Cheers, Emery

1 0

base-hw: Virtualbox thread priorities
by Adrian-Ken Rueegsegger 10 Jul '15

10 Jul '15

Hi, While investigating the cause for the performance discrepancy of Virtualbox on NOVA vs hw_x86_64[_muen] [1], I have determined, with help from Alexander, that Virtualbox thread priorities [2] are not applied on base-hw. Even though priorities are specified when constructing the Cpu_connection [3], they have no effect since no quota is subsequently assigned/transferred. According to the 14.11 release notes [4], threads without quota have no guarantee to be scheduled and their priority is ignored. I believe this is the main cause for the difference in execution speed of Virtualbox on NOVA and base-hw. I was wondering if you could confirm my analysis of the issue and provide some pointers on how to best achieve the proper application of Virtualbox thread priorities on base-hw. Regards, Adrian [1] - Even in recompiler-only mode the guest execution on NOVA is considerably faster than on hw_x86_64 or hw_x86_64_muen [2] - https://www.virtualbox.org/browser/vbox/trunk/include/iprt/thread.h#L90 [3] - https://github.com/genodelabs/genode/blob/master/repos/ports/src/virtualbox… [4] - http://genode.org/documentation/release-notes/14.11#Trading_CPU_time_betwee…

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Trying to port DosBox on Genode
by Daren Sin 08 Jul '15

08 Jul '15

Hi all! I'm trying to follow the instructions stated on the page http://genode.org/documentation/developer-resources/porting_dosbox but I seem to be getting some problems. I could export the svn directory of DosBox successfully, and a directory for DosBox was also created successfully. But once I *cd* into the directory, I could not seem to run the *make* instruction; all I got in the *build.log* file was *make: *** No targets specified and no makefile found. Stop. *(though I notice that there's a *Makefile.am*) Thanks!

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"Core" thread doesn't become active in kernel initialization
by Bob Stewart 07 Jul '15

07 Jul '15

Hi, I'm bringing up Genode (15.05) on an TI AM437x SoC and it is failing kernel initialization. The initialization appears go ok until the call to init_kernel_mp_primary(). Once the Core_thread singleton is created the last printf output that appears is one I inserted after the call to to _become_active() in the constructor. A printf inserted into the singleton method after the Core_thread creation never shows up on the console. The initialization never completes. The AM437x is a Cortex-A9MP platform with a single core. It is very similar to the Panda board as far as memory mapping goes. Any hints on how to debug this situation further would be very helpful. Thanks, Bob Stewart

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