Re: Board and OS suggestion
Secure Os means something like tiny os available http://www.tinyos.net/ or SEL4 http://ssrg.nicta.com/projects/seL4/ Any board has wifi connectivity? On Thu, Aug 28, 2014 at 10:38 AM, Kristofer Hallin kristofer.hal...@gmail.com wrote: What do you mean with a secure OS? What do you need it to do? (Also, is this related to the kernel?) On 28 Aug 2014 07:04, Robert Clove cloverob...@gmail.com wrote: Hi All, As much of you will be doing experiments i need your advice. I want to run some secure OS on an embedded platform like raspberry pi or beagle board. Can you suggest me which board is good and any secure OS that you have try'ed? Any board having wi fi connectivity will be an advantage. Regards ___ Kernelnewbies mailing list Kernelnewbies@kernelnewbies.org http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies ___ Kernelnewbies mailing list Kernelnewbies@kernelnewbies.org http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
Re: U64 Ordering in File System Code of Btrfs
[Thu, 28 Aug 2014 00:54:47 -0400]: nick (nick): ,[ nick ] | Hey Guys, | Thanks for the help so far. I am wondering after reading the btrfs | code for certain functions there seem to | be a lot of u64 variable and function returns of this type. Is this | common in file system due to the disk | being in a certain format and depending on the CPU being big or small | endian that this needed to not reorder | the disk parts that are being read into main memory and preserve the data's ordering? | Cheers Nick ` on disk format is little-endian. have a look at https://btrfs.wiki.kernel.org/index.php/Main_Page for more information. kind regards anupam ___ Kernelnewbies mailing list Kernelnewbies@kernelnewbies.org http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
Re: Board and OS suggestion
I'm a Kernel noob myself, but you do realise this is the mailing list for people that are trying to get into Linux Kernel Development and thus completely unrelated to any other Operating Systems? Secure Os means something like tiny os available http://www.tinyos.net/ or SEL4 http://ssrg.nicta.com/projects/seL4/ Any board has wifi connectivity? On Thu, Aug 28, 2014 at 10:38 AM, Kristofer Hallin kristofer.hal...@gmail.com mailto:kristofer.hal...@gmail.com wrote: What do you mean with a secure OS? What do you need it to do? (Also, is this related to the kernel?) On 28 Aug 2014 07:04, Robert Clove cloverob...@gmail.com mailto:cloverob...@gmail.com wrote: Hi All, As much of you will be doing experiments i need your advice. I want to run some secure OS on an embedded platform like raspberry pi or beagle board. Can you suggest me which board is good and any secure OS that you have try'ed? Any board having wi fi connectivity will be an advantage. Regards ___ Kernelnewbies mailing list Kernelnewbies@kernelnewbies.org mailto:Kernelnewbies@kernelnewbies.org http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies ___ Kernelnewbies mailing list Kernelnewbies@kernelnewbies.org http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies ___ Kernelnewbies mailing list Kernelnewbies@kernelnewbies.org http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
Re: Board and OS suggestion
Sorry will take care of that On Thu, Aug 28, 2014 at 11:56 AM, Kernel Apprentice kernelapprent...@gmail.com wrote: I'm a Kernel noob myself, but you do realise this is the mailing list for people that are trying to get into Linux Kernel Development and thus completely unrelated to any other Operating Systems? Secure Os means something like tiny os available http://www.tinyos.net/ or SEL4 http://ssrg.nicta.com/projects/seL4/ Any board has wifi connectivity? On Thu, Aug 28, 2014 at 10:38 AM, Kristofer Hallin kristofer.hal...@gmail.com wrote: What do you mean with a secure OS? What do you need it to do? (Also, is this related to the kernel?) On 28 Aug 2014 07:04, Robert Clove cloverob...@gmail.com wrote: Hi All, As much of you will be doing experiments i need your advice. I want to run some secure OS on an embedded platform like raspberry pi or beagle board. Can you suggest me which board is good and any secure OS that you have try'ed? Any board having wi fi connectivity will be an advantage. Regards ___ Kernelnewbies mailing list Kernelnewbies@kernelnewbies.org http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies ___ Kernelnewbies mailing listKernelnewbies@kernelnewbies.orghttp://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies ___ Kernelnewbies mailing list Kernelnewbies@kernelnewbies.org http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
Kernel Programming
Hi, I have learnt the basic OS concepts and I'm pretty good at c. Now I need to really work on it. Can you please help me with some basic programs, how to approach and how to work on it. Thank you in advance. :) ___ Kernelnewbies mailing list Kernelnewbies@kernelnewbies.org http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
Re: Kernel Programming
Start with eudyptula challenge : http://eudyptula-challenge.org/ 2014-08-28 12:03 UTC+02:00, Prudhvee Narasimha Sadha prudhvi.s...@gmail.com: Hi, I have learnt the basic OS concepts and I'm pretty good at c. Now I need to really work on it. Can you please help me with some basic programs, how to approach and how to work on it. Thank you in advance. :) -- « On ne résout pas un problème avec les modes de pensée qui l’ont engendré. » « You cannot solve current problems with current thinking. Current problems are the result of current thinking » ___ Kernelnewbies mailing list Kernelnewbies@kernelnewbies.org http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
Re: Kernel Programming
On Thu, 28 Aug 2014 15:33:21 +0530, Prudhvee Narasimha Sadha said: Hi, I have learnt the basic OS concepts and I'm pretty good at c. Now I need to really work on it. *WHY* do you need to work on it? Do you just want something for your resume? Has your boss ordered you to write a specific piece of kernel code or you'll be fired? You have a piece of hardware that isn't supported yet? You just want to give back to the community? (If this, then just build and run linux-next kernels and report any problems. We need good QA and testing more than we need more newbie programmers) pgpLPxKG_P7qy.pgp Description: PGP signature ___ Kernelnewbies mailing list Kernelnewbies@kernelnewbies.org http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
What part of the kernel code maintains /proc/modules
Hi, Just want to know why in /proc/modules some of the modules are marked (F). Like: usb_storage 56610 0 - Live 0xa005d000 (F) Thanks, Stephan. ___ Kernelnewbies mailing list Kernelnewbies@kernelnewbies.org http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
Re: What part of the kernel code maintains /proc/modules
On Wed, 27 Aug 2014 16:55:23 -0700, StephanT said:
Just want to know why in /proc/modules some of the modules are marked (F). Li
ke:
usb_storage 56610 0 - Live 0xa005d000 (F)
kernel/modules.c has a function module_flags_taint():
static size_t module_flags_taint(struct module *mod, char *buf)
{
size_t l = 0;
if (mod-taints (1 TAINT_PROPRIETARY_MODULE))
buf[l++] = 'P';
if (mod-taints (1 TAINT_OOT_MODULE))
buf[l++] = 'O';
if (mod-taints (1 TAINT_FORCED_MODULE))
buf[l++] = 'F';
if (mod-taints (1 TAINT_CRAP))
buf[l++] = 'C';
if (mod-taints (1 TAINT_UNSIGNED_MODULE))
buf[l++] = 'E';
/*
* TAINT_FORCED_RMMOD: could be added.
* TAINT_CPU_OUT_OF_SPEC, TAINT_MACHINE_CHECK, TAINT_BAD_PAGE don't
* apply to modules.
*/
return l;
}
Somebody 'modprobe -f' that module into the kernel, and it may or may not
actually work properly because it wasn't compiled against the kernel that
is running. Hilarity can result if it's using a different definition for
some random 'struct foo' than the rest of the kernel...
pgpWknhGCI85Y.pgp
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Re: Btrfs Issues
On Wed, 27 Aug 2014 21:30:54 -0700, Manish Katiyar said: No I just pulled it out and then I get this error. Maybe this is normally when not unmounted? This is expected then. It was middle of a journal transaction when you pulled the device out. I wonder if we'll get to watch Nick debug problems with btrfs's journal recovery code next. :) pgpw1fUluWNG5.pgp Description: PGP signature ___ Kernelnewbies mailing list Kernelnewbies@kernelnewbies.org http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
Re: What part of the kernel code maintains /proc/modules
Hi,
Thanks for the answer. Still cannot understand:
-bash-4.1# uname -r
3.10.14-100.146887.clp6.x86_64
-bash-4.1# modinfo usb-storage.ko
filename: usb-storage.ko
license: GPL
description: USB Mass Storage driver for Linux
author: Matthew Dharm mdharm-...@one-eyed-alien.net
alias: usb:v*p*d*dc*dsc*dp*ic08isc06ip50in*
... lots of aliases ...
alias: usb:v03EBp2002d0100dc*dsc*dp*ic*isc*ip*in*
depends:
intree: Y
vermagic: 3.10.14-100.146887.clp6.x86_64 SMP mod_unload
parm: option_zero_cd:ZeroCD mode (1=Force Modem (default), 2=Allow
CD-Rom (uint)
parm: swi_tru_install:TRU-Install mode (1=Full Logic (def), 2=Force
CD-Rom, 3=Force Modem) (uint)
parm: delay_use:seconds to delay before using a new device (uint)
parm: quirks:supplemental list of device IDs and their quirks (string)
As shown above both have the same Version - they were built together on the
same system. If I unload and load back the usb-storage the (F) disappears.
After re-boot the (F) is back.
Any idea why
Thanks.
On Thursday, August 28, 2014 7:53 AM, valdis.kletni...@vt.edu
valdis.kletni...@vt.edu wrote:
On Wed, 27 Aug 2014 16:55:23 -0700, StephanT said:
Just want to know why in /proc/modules some of the modules are marked (F). Li
ke:
usb_storage 56610 0 - Live 0xa005d000 (F)
kernel/modules.c has a function module_flags_taint():
static size_t module_flags_taint(struct module *mod, char *buf)
{
size_t l = 0;
if (mod-taints (1 TAINT_PROPRIETARY_MODULE))
buf[l++] = 'P';
if (mod-taints (1 TAINT_OOT_MODULE))
buf[l++] = 'O';
if (mod-taints (1 TAINT_FORCED_MODULE))
buf[l++] = 'F';
if (mod-taints (1 TAINT_CRAP))
buf[l++] = 'C';
if (mod-taints (1 TAINT_UNSIGNED_MODULE))
buf[l++] = 'E';
/*
* TAINT_FORCED_RMMOD: could be added.
* TAINT_CPU_OUT_OF_SPEC, TAINT_MACHINE_CHECK, TAINT_BAD_PAGE don't
* apply to modules.
*/
return l;
}
Somebody 'modprobe -f' that module into the kernel, and it may or may not
actually work properly because it wasn't compiled against the kernel that
is running. Hilarity can result if it's using a different definition for
some random 'struct foo' than the rest of the kernel...
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