As I said I use kvm and this question was just for sake of argument. Since
you ask I work with sockets ATM.
30 lip 2015 16:03 "nick" napisał(a):
>
>
> On 2015-07-30 09:57 AM, Grzegorz Dwornicki wrote:
> > Yeah I've thought that hardware can be hard to program on U
What about UML? I'm using KVM but asking for the sake of argument.
2015-07-29 23:03 GMT+02:00 Manish Katiyar :
> On Wed, Jul 29, 2015 at 1:49 PM, Greg Freemyer
> wrote:
>> On Wed, Jul 29, 2015 at 4:23 PM, Manish Katiyar wrote:
>>> On Wed, Jul 29, 2015 at 1:07 PM, Jeff Haran wrote:
>-Or
Hello
I am wondering with pure theoretical task. Is there a posibility to
unlock the recv function without making the socket nonblocking? Lets
assume that we have our server and client:
server <---network ---> client
Server callend the recv function and waits for the data from client
soo its blo
Hello
Proces have a established tcp socket. It calls sys_revcmsg on that
socket. That function goes all the way to tcp_recvmsg function.
Function tcp_recvmsg.c (defined in net/ipv4/tcp.c) blocks it self on
function sk_wait_data if socket recv queue is empty. I wanted to know
how socked is checked
Keepalive question
Hello
I am bothered with very simple situaction. Lets say we have a TCP connection:
S1 <> S2
Lets assume that this connection is using blocking sockets. and that
both hosts: s1 and s2 are using SO_KEEPALIVE. If they both are not
using this connection then the kernel? is s
Hi
I have a big interest in how kernel handles this situaction.
Lets assume that we have two hosts: host 1 and host 2 and on host 1 I
have started this command:
nc -l -p
on host 2 I have started this command (2 means IP addres of second host here!):
nc 2
Now i can send msgs betweem the
Hello
I have a question about this structure. It has 2 fields. One is iov_base
the pointer of type void. Second is iov_len of type size_t.
This is interesting: iov_len has always a value of 8190. How does it impact
the iov_base? I mean does iov_base is built from other structures? If soo
where I
.org/collaborate/workgroups/networking/mainpage,
> see if that helps
>
> kind regards
> anupam
>
> On Tue, Oct 14, 2014 at 7:42 AM, Grzegorz Dwornicki
> wrote:
>
>> Hey
>>
>> Is there a good documentation on how messages are taking the tour from
>> User
Hey
Is there a good documentation on how messages are taking the tour from User
calling read/write on socket fd, to kernel handling the actual
send/receive functions? I wish to write code to capture the messages (no
netfilter - I wish to bypass it) for processing.
I know there is a socket->ops s
Hi
Can anyone point me why lxc was added to the kernel instead of openvz? The
point in time will be sufficient as I will look in the lkml archives.
Grzegorz
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http://lists.kernelnewbies.org/ma
money from University. This may be a problem in the long
run.
7 sie 2013 11:22, "Rohan Puri" napisał(a):
>
>
>
> On Wed, Aug 7, 2013 at 12:09 AM, Grzegorz Dwornicki wrote:
>
>> Hi
>>
>> I'm working on own phd thesis. It includes some kernel hacking for
Hi
I'm working on own phd thesis. It includes some kernel hacking for
practical application of my research. I wish to make some progress with
programming classes on my university. We have a lot of high level
programing like object oriented languages but none on low level and kernel
programing.
I
Then use HEPunion with -t switch
Greg
1 lip 2013 20:18, "Saket Sinha" napisał(a):
> Hi Daniel,
>
> It shows
> nodev HEPunion
>
> Regards,
> Saket Sinha
>
>
> On Mon, Jul 1, 2013 at 11:37 PM, Daniel Baluta wrote:
>
>> On Mon, Jul 1, 2013 at 8:28 PM, Saket Sinha
>> wrote:
>> > This is to
age-
>
> mount:wrong fs, bad option, bad superblock on /dev/sda1, Missing codepage
> or other error.
>
> Regards,
> Saket Sinha
>
>
>
> On Mon, Jul 1, 2013 at 11:54 PM, Grzegorz Dwornicki wrote:
>
>> Then use HEPunion with -t switch
>>
>> Greg
>
this.
21 kwi 2013 12:01, "Robert Clove" napisał(a):
> where to put init 3 or init 5,i mean what are the steps
>
>
> On Sun, Apr 21, 2013 at 3:21 PM, Grzegorz Dwornicki wrote:
>
>> 1) init 3 or init 5
>> 2) man chkconfig should help you
>> 3) read about /etc/
1) init 3 or init 5
2) man chkconfig should help you
3) read about /etc/sysconfig/network-scripts/ifcfg-* files, in your case
you are interested in proto=dhcp directive
4) linux is multiuser system in init 3 soo use ssh or other tty
21 kwi 2013 11:46, "Robert Clove" napisał(a):
> Hi,
> I want to
Thx for the tips :)
5 lut 2013 18:12, napisał(a):
> On Tue, 05 Feb 2013 14:07:37 +0100, Grzegorz Dwornicki said:
>
> > I guess that there may be a better API that why this thread was created
> in
> > first place. My project goal is to make process checkpoints like cryopid
&g
(a):
> On Fri, 01 Feb 2013 14:17:18 +0100, Grzegorz Dwornicki said:
>
> > I want to do something like kill -9 on specyfic process using kernel
> module
>
> Let's take a step back - can you explain *why* you're trying to do a
> kill -9 from a kernel module? There&#
I have seen articles about using console port to redirect kernel messages
from VM to host. You may want to look for details in google. I don't
remeber the ugly details...
4 lut 2013 11:38, "horseriver" napisał(a):
> On Mon, Feb 04, 2013 at 09:41:51AM +0100, Grzegorz Dwornicki
1. Look in /var/log for dmesg, kernel.log or kmsg. These files cn be
created by syslog and one of them might contain this information.
2. Use dmesg command and grep it like this: dmesg | grep "Initial Network"
> myfile.txt
4 lut 2013 09:25, "horseriver" napisał(a):
> hi:)
>
>When kernel boot
Ad.1 you need to keep partition table somewhere. I guess in MSDOS format
that will be space right after MBR.
G.
3 lut 2013 19:18, "horseriver" napisał(a):
> hi:)
>
> I use fdisk to add a new partion on a image file.
> I find the start of partion 1 is alwayes set to 63 by default.
> That me
need to send a signal to it by a kernel function
>
> Sent from my HTC
>
> - Reply message -
> From: "Grzegorz Dwornicki"
> To:
> Subject: Process exit codes
> Date: Fri, Feb 1, 2013 9:17 pm
>
>
> Hi
>
> Can I kill process by changing its ex
Hi
Can I kill process by changing its exit codes in task_struct structure?
Lets do this in 2 steps:
1. Modify the exit codes in task_struct
2. Call schedule
I want to do something like kill -9 on specyfic process using kernel module
Thanks
G.
___
Kern
Let me get this right: you have 2 distros? On one (ubuntu) you have swap
and on other (lubuntu) not? Looks like missing fstab entry too me
Greg.
27 sty 2013 13:24, "Martin Kepplinger" napisał(a):
> Hi,
>
> I run a recent re-kernel (using lubuntu 12.04) and when I boot into it,
> "free" says I do
On the Sylicon Valey Linux User Group at the "Kernel Walktrought" (you can
watch it on youtube) Jim said something about kernel remembering its root
devide durring compilation soo when you don't use root arg it will use that
setting inside of its image. But someone might verify this
G.
22 sty 2013
How does __user macro works? I know it is defined in
include/linux/compiler.h as:
# define __user.__attribute__((noderef, address_space(1)))
I could write thesse macros defs too but my real problem is: what does this
stuff do? Some functions use this macro and other does not. For example
co
I too would like to read tutorial like this.
Ramfs is not disk based.
Reading code of extX or other is a little pain... I was searching for
article like this on lwn but there are only tutorials about nondisk fs.
Greg
8 sty 2013 15:48, "Mulyadi Santosa" napisał(a):
> On Tue, Jan 8, 2013 at 8:59
Hi
I have to ask about this: can process ignore this signal? If yes then
this method is not perfect. I know i read somewhere about signals and
there was this part: processes can ignore nearly all of them. Two
signals can't be ignored: SIGKILL and... I don't remember the
second...
Greg.
_
Well I had same problem in my own project that I am working ATM. We
won't be sure what is wrong until you show us the sourcecode but my
guess is missing EXPORT_SYMBOL makro - that was missing in my project.
Greg.
- Reply message -
From: "Pritam Bankar"
Date: Mon, Dec 3, 2012 12:18 pm
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