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WOW... could Genode use Wayland Over Wire?
by Peter Lindener 11 Feb '16

11 Feb '16

Hi Genodians- I just took note that Wayland is on its way to inter-operating over the network <http://blogs.s-osg.org/wow-wayland-over-wire/>.. Norman and the other Genode system architects, may request some adjustments to what/How WOW will become...but it sure seems like the time to see if Genode might be able to utilize WOW for it's remote, graphics display.. Then if would be great if Genode's graphical config tool, were arcitected such that the GUI interaction code is partitioned from theGenode configuration business logic, such that one can also travel much lighter when configuring light-weight embedded systems perhaps using TMUX for terminal interaction <https://tmux.github.io/>.. I'm not sure what the final analysis will be on how Genode's existing GUI server will in the end relate to how things are apt to be done in Wayland's WOW api.. .. it would be great to hear more thinking here as to how Genode might best evolve.. all the best -Peter

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why use ambient authority in genode hello world?
by Dan Connolly 11 Feb '16

11 Feb '16

In a 2 Dec twitter conversation <https://twitter.com/GenodeLabs/status/671941252162678784>, I was invited to elaborate here; so... I wholeheartedly agree when the Genode book <http://genode.org/documentation/genode-foundations-15-05.pdf> says: *Capability-based security* supposedly makes security easy to use by > providing an > intuitive way to manage authority without the need for an all-encompassing > and > complex global system policy. I don't understand why ignore this principle with the hello world code example: #include <base/printf.h> > int main() > { > Genode::printf("Hello world\n"); > return 0; > } Why appeal to ambient authority to print to the console? Why not pass a capability to main, as pony does with env <https://github.com/CausalityLtd/ponyc/blob/master/packages/builtin/env.pony>, capsicum at cap_enter() <http://lwn.net/Articles/482858/>, etc? At lower levels of the architecture, genode has this structure; e.g. 3.5 component creation: The environment is constructed by successively requesting the component’s > RM, RAM, CPU, and PD sessions from its parent. Why not continue this structure in the base API? -- Dan Connolly http://www.madmode.com/

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Problem with custom rm-service
by David Werner 09 Feb '16

09 Feb '16

Hi Genode mailing list, the last few days I wrote a server component (called proxy_server) which offers a custom RM-service called "PRM" (Proxy_RM). Under the hood the component maintains a Rm_connection within each Prm_session_component in order to use the original core rm_service. My aim is to intercept all attach and detach operations. Compiling and linking works perfectly but when I run my system scenario (on foc_x86_64) I get the following output: Genode 15.11-71-g2e0e767 int main(): --- create local services --- int main(): --- start init --- int main(): transferred 112 MB to init int main(): --- init created, waiting for exit condition --- [init] Could not open ROM session for module "ld.lib.so" [init -> proxy_server] Proxy::Prm_root::Prm_root(Genode::Rpc_entrypoint*, Genode::Allocator*):Creating PRM_root_component... [init -> proxy_server] int main(): PRM_root created and back in main! [init -> proxy_server] virtual Proxy::Prm_session_component* Proxy::Prm_root::_create_session(const char*): Creating Prm_session_component... [init -> proxy_server] int main(): PRM service announced -> going to sleep... Genode::Signal_session_component::submit(Genode::Signal_context_capability, unsigned int)::<lambda(Genode::Signal_context_component*)>: invalid signal-context capability Genode::Pager_entrypoint::entry()::<lambda(Genode::Pager_object*)>: Could not resolve pf=401feff8 ip=100b9af Error: Test execution timed out make: *** [run/proxy] Fehler 254 I do not understand where the output: Genode::Signal_session_component::submit(Genode::Signal_context_capability, unsigned int)::<lambda(Genode::Signal_context_component*)>: invalid signal-context capability Genode::Pager_entrypoint::entry()::<lambda(Genode::Pager_object*)>: Could not resolve pf=401feff8 ip=100b9af comes from. Is there anyone who can help me with this or who has an idea what I can try? If needed I can post my code here. Best Regards, David

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AHCI driver problem
by Igor 04 Feb '16

04 Feb '16

Hello list! Description: AHCI driver do not announce service "Block" Environment: Genode: 15.11 MB: ASUS Sabertooth Z87 Driver successfully finds my HD, creates appropriate ATA_driver, and that's all. With verbose messages turning on all went ok but it's impossible to work normally in that mode. Thanks.

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Running Ubuntu Snappy under Genode on a SnickerDoodle..?
by Peter Lindener 03 Feb '16

03 Feb '16

It's encouraging to find that Genode already provides some support for the Zynq_7000 ARM/FPGA SOC.. I gather SnickerDoodle <http://krtkl.com/> (I will be Alpha testing), supports Ubuntu Snappy booted from an SD card out of the box <https://www.crowdsupply.com/krtkl/snickerdoodle/updates/1992>... My dream here is that Ubuntu Snappy might run under Genode, along side the more real-time oriented I/O and control process.. (that I would not trust to run within Snappy).... that is:I would like the benefits of both Genode, and a mainstream IOT orientated Linux distribution (that someday I hope will become BSD centric ) thus, I write asking for advice as to how I might best get all of these OS parts to play nicely together...and if anyone else has a similar interest for Genode's future directions. -Peter

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Re: Hash sum check for qtscriptclassic-1.0_1-opensource failed
by Bent Bracke 27 Jan '16

27 Jan '16

Hi Ah, thank you, that worked. Kind regards Bent Bracke > On 27. jan. 2016, at 01.53, Nobody III <hungryninja101@...9...> wrote: > > You need to update qt5.hash. qt5.hash is an SHA1 hash of qt5.port. I've had this problem before. Whenever you change a .port file, you need to update its corresponding .hash file. > >> On Tue, Jan 26, 2016 at 1:30 PM, Evolux OS <admin@...395...> wrote: >> Forgot to mention: >> >> It actually fails earlier: >> Error: Download for qtscriptclassic-1.0_1-opensource failed >> make[2]: *** [qtscriptclassic-1.0_1-opensource.file] Error 1 >> make[1]: *** [_install_in_port_dir] Error 2 >> make: *** [prepare-qt5] Error 2 >> >> I fixed that by manually downloading the file and changing the link to point to the downloaded file. >> >> Steps to reproduce: >> >> 1. Install toolchain (sudo tar xPfj genode-toolchain-15.5-x86_64.tar.bz2) >> 2. git clone git://github.com/genodelabs/genode.git >> 3.cd genode/repos/libports >> 4.make prepare >> >> kind regards >> Bent Bracke >> >> -- >> Evolux OS >> Sent with Sparrow >> >>> On Tuesday 26 January 2016 at 20:36, Bent Bracke wrote: >>> >>>> On Tuesday 26 January 2016 at 13:37, Christian Helmuth wrote: >>>> Hello Bent, >>>> >>>>> On Mon, Jan 25, 2016 at 08:52:51PM +0100, Bent Bracke wrote: >>>>> When trying to “make prepare” the lib ports directory I get the following error: >>>>> >>>>> "Hash sum check for qtscriptclassic-1.0_1-opensource failed“ >>>> >>>> I tried to reproduce your issue just now, but it works as expected. >>>> >>>>> The hash seems to be correct. >>>> >>>> What do you mean by "hash seems to be correct"? Did you run sha1sum >>>> manually? >>> Yes, >>> >>> >>>>> Any ideas? >>>> Which Genode release do you use? >>> >>> 15.11 >>> >>> >>>> In the past, we had an issue with a custom version of the sha1sum >>>> tool, which produced incompatible output. If I run it manually on >>>> Ubuntu 12.04 I get >>>> >>>> > sha1sum contrib/qt5-4d7c2192509a580b54ac069e68f1e9ac4d9159bd.incomplete/qtscriptclassic-1.0_1-opensource.tar.gz >>>> 74e9dc82dd194d8ae0fb0f8f1df74081948b943a contrib/qt5-4d7c2192509a580b54ac069e68f1e9ac4d9159bd.incomplete/qtscriptclassic-1.0_1-opensource.tar.gz >>>> >>>> Can you confirm that your output is similar? >>> >>> Yes, 74e9dc82dd194d8ae0fb0f8f1df74081948b943a qtscriptclassic-1.0_1-opensource.tar.gz >>> This is on Ubuntu 14.04. >>> >>> >>> Kind regards >>> Bent Bracke >>> >>> ------------------------------------------------------------------------------ >>> Site24x7 APM Insight: Get Deep Visibility into Application Performance >>> APM + Mobile APM + RUM: Monitor 3 App instances at just $35/Month >>> Monitor end-to-end web transactions and take corrective actions now >>> Troubleshoot faster and improve end-user experience. Signup Now! >>> http://pubads.g.doubleclick.net/gampad/clk?id=267308311&iu=/4140 >>> _______________________________________________ >>> genode-main mailing list >>> genode-main(a)lists.sourceforge.net >>> https://lists.sourceforge.net/lists/listinfo/genode-main >> >> >> ------------------------------------------------------------------------------ >> Site24x7 APM Insight: Get Deep Visibility into Application Performance >> APM + Mobile APM + RUM: Monitor 3 App instances at just $35/Month >> Monitor end-to-end web transactions and take corrective actions now >> Troubleshoot faster and improve end-user experience. Signup Now! >> http://pubads.g.doubleclick.net/gampad/clk?id=267308311&iu=/4140 >> _______________________________________________ >> genode-main mailing list >> genode-main(a)lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/genode-main > > ------------------------------------------------------------------------------ > Site24x7 APM Insight: Get Deep Visibility into Application Performance > APM + Mobile APM + RUM: Monitor 3 App instances at just $35/Month > Monitor end-to-end web transactions and take corrective actions now > Troubleshoot faster and improve end-user experience. Signup Now! > http://pubads.g.doubleclick.net/gampad/clk?id=267308311&iu=/4140 > _______________________________________________ > genode-main mailing list > genode-main(a)lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/genode-main

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RE: FUSE + VFS
by Samuel Hall 27 Jan '16

27 Jan '16

Hello, Thank you for the response. In the implementation described in the article VFS isn't used due to the fact, that VFS wasn't available in genode at that time. A comment of the libc_fuse plugin states: /* * During the initialization of the plugin, we already require the VFS. * Hence, we need to make sure to initialize the VFS before doing our * own initialization. */ So does the current implementation, when using a FUSE fs via the libc plugin, require VFS? Is there any more detailed information about the VFS in genode? I am particularly interested in finding out how the flow of a FUSE call differs in genode compared to the "normal" call as shown in this graphic [1]. When using a FUSE based fs as a file system server as described in Josef's response, do any adjustments have to be made to the FUSE fs so it runs on genode? Kind regards Hall Samuel [1] http://usr.sysret.de/jws/porting_fuse/img/490px-FUSE_structure.svg.png

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Green task stacks
by Igor 27 Jan '16

27 Jan '16

Hello! Genode Thread class already have infrastructure for implementing the green tasks: alloc_secondary_stack() which used i.e. in dde_linux to emulate the Linux kernel behavior. These secondary stacks have fixed maximal size and live one below another, so they can overlap each other. It is possible to create different Dataspace lists for each green stack and then switch them. Right now Genode hasn't the method for switching several DSs at once, so each DS in that list should be switched individually which would be too expensive. The question is: even having that method, can we still consider our tasks "green"? Or such complexity is no better than the ordinal thread complexity? Thanks!

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Re: sd_card driver Block service prevents FFAT file system use by multiple clients?
by Nobody III 27 Jan '16

27 Jan '16

You're trying to make a second connection to the Block service, but you should be making a second connection to the File_system service. The Block service only provides a random-access chunk of memory, not access to files. On Jan 26, 2016 6:35 PM, "Bob Stewart" <robjsstewart@...196...> wrote: Hi, I was doing some testing with the 3rd party FFAT file system which multiplexes clients accessing the file system. This was done in base-hw on release 15.11. The first client connected to the file system as expected and two files were read and processed. When the second client attempted to make a connection to the Block service, a "could not open block connection" error was issued by the disk_initialize method in diskio_block.cc. (partial log below). The Block service is provided by an sd_card driver (identical to the omap4 driver for the Panda board). Based on my limited understanding of the Genode architecture, I would think that is the correct behavior since the first client is still connected and that the a multiplexer for the service needs to be provided. If that is correct, the FFAT file system effectively does not multiplex client connections in a useful manner, for this scenario. How would one go about doing that? Bob Stewart [init -> pruss_drv] void init_libc_ffat(): using the libc_ffat plugin [init -> pruss_drv] --- am33xx PRU driver --- [init -> pruss_drv] PRUSS quota super period 1000000 [init -> pruss_drv] PRUSS quota 199981 [init -> motor_ctl] --- Motor Control application starting --- [init -> Autopilot] void init_libc_ffat(): using the libc_ffat plugin [init -> Autopilot] --- Autopilot application starting --- [init -> sd_card_drv] CID: 0x1d414453 0x44202020 0x02b16703 0xea00d927 [init -> sd_card_drv] RCA: 0x59b4 Quota exceeded! amount=24576, size=12288, consumed=24576 [init -> sd_card_drv] Block::Omap3_driver::Omap3_driver(bool): SDCard driver getting m mc1 ready with dma 0 [init -> sd_card_drv] SD card detected [init -> sd_card_drv] capacity: 60303 MiB [init -> pruss_drv] Loaded PRU-0 program 123 words [init -> pruss_drv] Loaded PRU-1 program 337 words [init -> Autopilot] opening file /Autopilot/ap_config.xml [init -> Autopilot] could not open block connection [init -> Autopilot] No file system available [init] virtual void Genode::Child_policy::exit(int): child "Autopilot" exited with exi t value -1 [init -> motor_ctl] Config not set in time [init] virtual void Genode::Child_policy::exit(int): child "motor_ctl" exited with exi t value -2 ------------------------------------------------------------------------------ Site24x7 APM Insight: Get Deep Visibility into Application Performance APM + Mobile APM + RUM: Monitor 3 App instances at just $35/Month Monitor end-to-end web transactions and take corrective actions now Troubleshoot faster and improve end-user experience. Signup Now! http://pubads.g.doubleclick.net/gampad/clk?id=267308311&iu=/4140 _______________________________________________ genode-main mailing list genode-main(a)lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/genode-main

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sd_card driver Block service prevents FFAT file system use by multiple clients?
by Bob Stewart 27 Jan '16

27 Jan '16

Hi, I was doing some testing with the 3rd party FFAT file system which multiplexes clients accessing the file system. This was done in base-hw on release 15.11. The first client connected to the file system as expected and two files were read and processed. When the second client attempted to make a connection to the Block service, a "could not open block connection" error was issued by the disk_initialize method in diskio_block.cc. (partial log below). The Block service is provided by an sd_card driver (identical to the omap4 driver for the Panda board). Based on my limited understanding of the Genode architecture, I would think that is the correct behavior since the first client is still connected and that the a multiplexer for the service needs to be provided. If that is correct, the FFAT file system effectively does not multiplex client connections in a useful manner, for this scenario. How would one go about doing that? Bob Stewart [init -> pruss_drv] void init_libc_ffat(): using the libc_ffat plugin [init -> pruss_drv] --- am33xx PRU driver --- [init -> pruss_drv] PRUSS quota super period 1000000 [init -> pruss_drv] PRUSS quota 199981 [init -> motor_ctl] --- Motor Control application starting --- [init -> Autopilot] void init_libc_ffat(): using the libc_ffat plugin [init -> Autopilot] --- Autopilot application starting --- [init -> sd_card_drv] CID: 0x1d414453 0x44202020 0x02b16703 0xea00d927 [init -> sd_card_drv] RCA: 0x59b4 Quota exceeded! amount=24576, size=12288, consumed=24576 [init -> sd_card_drv] Block::Omap3_driver::Omap3_driver(bool): SDCard driver getting m mc1 ready with dma 0 [init -> sd_card_drv] SD card detected [init -> sd_card_drv] capacity: 60303 MiB [init -> pruss_drv] Loaded PRU-0 program 123 words [init -> pruss_drv] Loaded PRU-1 program 337 words [init -> Autopilot] opening file /Autopilot/ap_config.xml [init -> Autopilot] could not open block connection [init -> Autopilot] No file system available [init] virtual void Genode::Child_policy::exit(int): child "Autopilot" exited with exi t value -1 [init -> motor_ctl] Config not set in time [init] virtual void Genode::Child_policy::exit(int): child "motor_ctl" exited with exi t value -2

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