gmane.os.helenos.devel

VFS2 thesis defended

Jiří Zárevúcky — 2013-06-18T12:28:05

It is with great pleasure that I announce the successful defense of my
thesis. (On the last meeting, I mistook the date, sorry.)

I will provide a redistributable copy of the text soon, possibly with
additional figures and errata. In a few days, I will also start discussing
the way parts of my work can be merged into mainline. Right now, however, I
need to rest. :)

Minutes of the HelenOS monthly hangout #9

Jiří Zárevúcky — 2013-06-07T00:31:39

Sadly, only me and Jirka S. attended this months hangout.
Neither of us had any interesting HelenOS development to report.

Newbie

Sergio Tortosa Benedito — 2013-06-04T10:29:51

Hi all, my name is Sergio, and I am a c and c++ coder, well also there 
are others such as go. For some time I have been visiting your web and 
some things, and I would like to help the project but I don't have much 
of idea of OSes (well a bit), I tried to search something about that 
but all I can find it's OS specific (mainly Linux) or Tanenbaum's book, 
I thought neither of both were good, the first because it's OS specific 
and the second because I think it's full of POSIX things (since it's 
most MINIX code). So I would like some book were I could learn all the 
necessary , or at least the basics, for HelenOS development. Or if not 
a book, it could be a list of minimum knowledge. As a side note I would 
to help in the desktop part (graphics, applications ...) so if someone 
can send me info about that it would be really helpful.

FYI: SOCIS (ESA)

Martin Decky — 2013-06-03T15:17:26

Hi everybody,

a friend of mine who works for the European Space Agency in ESTEC has 
informed me about the ESA Summer of Code in Space 2013 [1], a 
GSoC-inspired (but unrelated) stipend programme.

I have absolutely no idea if we have any chances of being accepted (one 
of the criterion is, of course, space relevance). But I have still 
filled in the organization application form, since you can only win in a 
lottery if you buy a ticket :)

[1] http://sophia.estec.esa.int/socis2013/


M.D.

75th HelenOS project meeting

Jakub Jermar — 2013-06-03T11:40:27

The next meeting will take place on Saturday of June 8, shortly
after 14:00 somewhere in Brno. Someone from Brno, please suggest a
suitable venue and make a reservation on Friday after we know who is
coming. Thanks.

Jakub

Sparc64 booting issue.

Kieron Gillespie — 2013-06-02T01:20:25

Hi HelenOS developers,

This is my first time mailing a question to the HelenOS mailing list and
it's about HelenOS on sparc64. I downloaded the HelenOS boot-able ISO for
Ultrasparc processors and tried to use it on my SunBlade 2500 which has two
UltraSparc IIIi "Enchilada" processors and 16GB of RAM. Now I am able to
get it to boot but it appears to hang after the message "Booting the
kernel...".  I also get this same problem when using QEMU sparc64 emulation.

I guess my question is has it actually crashed or is the output for the
console going to the serial port?
Did "jump_to_kernel(..." send the program counter off into oblivion?

Another general question I suppose is what is the current state of the
Sparc64 port for HelenOS? I would like to try and help write drivers to
support hardware for both Sparc64 and possibly some ARM system, I have an
A10 I would also like to try and get HelenOS running on.

I would like to help contribute I have some experience with Linux kernel
hacking and I know Sparc V8/V9 a

Helenos port to Xen - where is it?

Jiri Svoboda — 2013-05-27T18:42:52

Hi, 



anybody knows where to find the code for the new Xen port from the 2012 
thesis? 



Thanks, 

Jiri

Two master theses defended

Martin Decky — 2013-05-27T10:20:52

Hello folks,

it is again my privilege and a great pleasure to announce two 
successfully defended HelenOS master theses:

Petr Koupy: Graphics Stack for HelenOS
Jan Vesely: HelenOS Sound Subsystem

Congratulations! The results of the first thesis are already part of 
HelenOS mainline, I am looking forward to integrating the results of the 
second thesis in the near future.

As soon as I receive the permission from the authors (please email me 
directly), the texts of the theses will be available to download on the 
HelenOS web site.


M.D.

HelenOS Camp 2013

Jakub Jermar — 2013-05-24T10:09:15

Hi all,

now it is a good time to start planning this year's HelenOS Camp.

Whoever wants to go and would not disqualify himself/herself on the
grounds of no merit, please declare your preferences.

I think we should plan this for August or September, with a special
bonus week between September 6 - September 12 when the camp can be
wife-and-children-free (at least partially) from my side.

Jakub

Problems with reading and writing to the serial port at the same time

Jakub Jermar — 2013-05-23T09:59:23

Yesterday, we (as in JS, MS and me) briefly touched some existing issues
with using the serial port driver for both reading and writing at the
same time. Martin, I thought this topic deserves some more attention, so
I wanted to state what problems I know about so that you can check your
own findings and add to the list, if you know of some other issues:

- #508 Parallel sessions don't mix well with call forwarding

This problem is making it impossible to have a parallel session opened
to a serial service using `loc_service_connect()' on the respective
_service_ path. However, due to the way this bug works, it is possible
to establish the parallel session using `devman_device_connect()` on the
respective _device_ path.

Note that the parallel sessions are one of the two possible ways to
access the device for both reading and writing at the same time. The
fibrils executing the char_dev_read() call can block inside the ns8250
driver, while fibrils executing the char_dev_write() can proceed without
being blocked

75th HelenOS project meeting (in Brno)

Martin Decky — 2013-05-20T21:41:43

Dear all,

I won't be able to make it to the incidental meeting with Martin S. this 
Wednesday (and I am really sorry about that).

But it reminded me of the next regular HelenOS project meeting that was 
preliminary scheduled to take place in Brno, Czech Republic (the date is 
standard, June 8th).

Because of the uncommon location I hereby inform about it sooner than 
usual so that everybody can mark it in one's calendars and make proper 
arrangements. If you have anything against the idea of organizing the 
next project meeting in Brno, please voice it ASAP. We'll discuss the 
venue later -- we have at least one local expert on our mailing list :)


M.D.

Meeting

Martin Sucha — 2013-05-20T20:55:41

Hi folks,

I'll be in Prague this Wednesday (May 22), if you would like to meet and
have some beer (or whatever drink you prefer), let me know. I guess
18:00 is a good choice of time, but I'm flexible. Suggestions for the
venue welcome.

Martin Sucha

correct linking between srv/ and app/ directories

Jana Rapava — 2013-05-19T14:47:14

Hi,
I'm working on IP broadcast and trying to write some testing code for it.
I have the following problem: changed files are in the
uspace/srv/inet/inetsrv/ directory,
testing code must be in uspace/app/ directory, and I can't figure out how
to do the
linking correctly without moving inetsrv code (with all dependencies) into
libc.
Solution is probably trivial, but after ten days I still can't find it, so
any advice will be
really appreciated.

By the way, are these functions (in uspace/srv/inet/inetsrv) meant to be
called directly,
or through IPC subsystem? From the source code, it looks like the former,
but they are in uspace/srv/, so I am not completely sure.
Thanks,
Jana Rapava

helenos.org infrastructure outage (May 18th 20131600 UTC)

Martin Decky — 2013-05-17T15:10:23

Hello folks,

I would like to inform you that there will be an outage of all the 
services hosted on helenos.org on Saturday May 18th 2013 starting at 
1700 UTC. The reason for the outage is a major upgrade of the physical 
machine running the domain.

The outage will affect the HelenOS web site, HelenOS Trac (i.e. wiki, 
tickets, etc.), the mainline repository of HelenOS and also the HelenOS 
mailing lists (because they are hosted on the same physical machine). If 
you need to access the central mainline Bazaar repository of HelenOS 
during the outage, please use the mirror at Launchpad [1].

The main outage should not last for more than 2 hours, however some 
services might return to a fully usable state as late as during Sunday 
May 19th. Sorry for the inconvenience and thanks for your understanding.

[1] https://code.launchpad.net/~helenos-core/helenos/mainline


Best regards

Martin Decky

HelenOS monthly hangout #8

Jakub Jermar — 2013-05-06T15:45:52

There is going to be our eighth G+ hangout on Thursday evening of
Central European Time. I have just sent out invitations for the
hangout. If you are not invited and think that you should be (or vice
versa), please send me a private message.

Jakub

74th HelenOS project meeting

Jakub Jermar — 2013-05-06T15:35:02

The next meeting will take place on Saturday of May 11, shortly
after 14:00 somewhere in Prague. Please let me know whether you plan to
come so that I can make a reasonable reservation, no later than by
Thursday evening. Also, do let me know whether you have any preferences
for the venue of the meeting.

Jakub

HelenOS networking on QEMU 1.3+

Jakub Jermar — 2013-05-04T18:50:31

Hello,

did anyone succeed in in running HelenOS networking on the newer
versions of QEMU? The last version in which I can still ping the default
gateway at 10.0.2.2 is 1.2.

Jakub

DNS resolution now available

Jiri Svoboda — 2013-05-03T21:18:32

Hi,

I just integrated fix for enhancement request #189 DNS resolver. It's a 
simple stub resolver - no recursive queries (e.g. nasa.gov), no search list,
no TCP. To try out:

# dnscfg set-ns <dns-server-addr>
# ping helenos.org

Cheers
-Jiri

libx86emu

Wolf Ramovsky — 2013-05-03T02:35:30

Hello!

I was going to take part in GSoC 2013 on HelenOS' side, implementing
VESA-compatible driver (ticket #520), but HelenOS wasn't accepted.
During preparation I made some steps to port software to execute BIOS
real-mode code from user space. At first, I tried library from
http://gitorious.org/x86emu. I've ported library succesfully and was
able to get VESA modes, but can't set. Later it become clear that was
my mistake: I've sent reference to pio_write_ instead of value. But at
first I blamed library and tried to use the other one, from NetBSD.
Finding out the reason of setmode failing, I've decided to stay with
*BSD's library because of its simplicity and more fine-grained
controllability. The library from the link above is a bit
overbloated...

So, I decided to share my results. Of course, this is far from video
driver, but I hope it'll be helpful.
You will need 2 patches sent earlier: patch to allow mapping of
realmode IVT and setjmp bugfix patch. The latter was commited but the
former wasn't because

libmbr & hdisk update

Dominik Taborsky — 2013-05-03T00:25:08

Dear fellow HelenOS developers,

I have just uploaded latest version of my libmbr (library for MBR  
manipulation) and hdisk (HelenOS's partition editor). The branch is here:  
https://launchpad.net/hdisk.

libmbr seems fully functional, reading/writing primary and logical  
partitions. No implicit limitations imposed. Libmbr checks inputs, keeps  
consistent list of partitions and checks for return values (so it's  
nothing like concept or heavy-development stuff). It shouldn't change very  
much from now on.

hdisk is quite simple yet powerful. Although it's not very user-friendly  
so far, you can do pretty much anything with it. It is quite easily  
extensible, so it can support other partition table formats (GPT on the  
way). It surely has bugs and space for improvement.

libgpt is still under development, but it is already included. So far you  
can check the code, but don't expect it work.


Any constructive criticism/comments regarding anything are very welcome.  
Feel free to give advice, comment,

Unified am335x/amdm37x uart driver

Maurizio Lombardi — 2013-05-02T21:25:52

Hi Jakub,

I am unifying the am335x and amdm37x uart kernel driver,
could you please test the attached patch on the beagleboard and tell
me if the UART is still working as expected?

It can be applied cleanly to the latest mainline.

Thanks,

--
--------------------
Maurizio Lombardi