Newbie question

Newbie question

[Sven Johnsson]

Hello,

I'm developing an embedded VoIP Linux phone and will soon write a
simple ALSA driver for mono usage. I have all the necessary code to
access the hardware. Can anyone advise me about how to interface ALSA?

Best Regards,
Sven Johnsson

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Re: Newbie question

[Lee Revell]

On 3/19/07, Sven Johnsson <sven.johnsson@gmail.com> wrote:
> I'm developing an embedded VoIP Linux phone and will soon write a
> simple ALSA driver for mono usage. I have all the necessary code to
> access the hardware. Can anyone advise me about how to interface ALSA?

Google "writing an alsa driver" and it's the first hit.

Lee

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newbie question

[Qingyu Song]

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First time to post here and not sure if this is the mail list for some
newbie questions.

My target board is so what close the freescale p2020 rdb board. As a start
point I would like to use meta-freescale (
git://git.yoctoproject.org/meta-freescale ) as my bsp layer.

From the README file, it says

This layer depends on:

URI: git://git.openembedded.org/openembedded-core
branch: master
revision: HEAD


Do I need clone this layer to my Poky? Or OE core is already part of the
Yocto 2.5?

Thanks
Qingyu

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Re: newbie question

[Zhenhua Luo]

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Hi Qingyu,

You can manually clone the depended layers. To facilitate the Yocto layer fetch, you can also follow the guide in https://source.codeaurora.org/external/qoriq/qoriq-components/yocto-sdk/tree/readme?h=sumo to download the source.


Best Regards,

Zhenhua

From: meta-freescale-bounces@yoctoproject.org [mailto:meta-freescale-bounces@yoctoproject.org] On Behalf Of Qingyu Song
Sent: Wednesday, July 25, 2018 11:12 AM
To: meta-freescale@yoctoproject.org
Subject: [meta-freescale] newbie question

First time to post here and not sure if this is the mail list for some newbie questions.

My target board is so what close the freescale p2020 rdb board. As a start point I would like to use meta-freescale ( git://git.yoctoproject.org/meta-freescale ) as my bsp layer.

From the README file, it says


This layer depends on:



URI: git://git.openembedded.org/openembedded-core<https://emea01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fgit.openembedded.org%2Fopenembedded-core&data=02%7C01%7Czhenhua.luo%40nxp.com%7C49c0bb21703e431e0bde08d5f1dc8d53%7C686ea1d3bc2b4c6fa92cd99c5c301635%7C0%7C0%7C636680851927504057&sdata=vJftn0GzW6Ip6RgRl9fzFDya5j%2Bl1PJM2kJFifli4pg%3D&reserved=0>

branch: master

revision: HEAD

Do I need clone this layer to my Poky? Or OE core is already part of the Yocto 2.5?

Thanks
Qingyu

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Re: newbie question

[Qingyu Song]

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Thanks for the tip!

On Tue, Jul 24, 2018, 8:57 PM Zhenhua Luo <zhenhua.luo@nxp.com> wrote:

> Hi Qingyu,
>
>
>
> You can manually clone the depended layers. To facilitate the Yocto layer
> fetch, you can also follow the guide in
> https://source.codeaurora.org/external/qoriq/qoriq-components/yocto-sdk/tree/readme?h=sumo
> to download the source.
>
>
>
>
>
> Best Regards,
>
>
>
> Zhenhua
>
>
>
> *From:* meta-freescale-bounces@yoctoproject.org [mailto:
> meta-freescale-bounces@yoctoproject.org] *On Behalf Of *Qingyu Song
> *Sent:* Wednesday, July 25, 2018 11:12 AM
> *To:* meta-freescale@yoctoproject.org
> *Subject:* [meta-freescale] newbie question
>
>
>
> First time to post here and not sure if this is the mail list for some
> newbie questions.
>
>
>
> My target board is so what close the freescale p2020 rdb board. As a start
> point I would like to use meta-freescale ( git://
> git.yoctoproject.org/meta-freescale ) as my bsp layer.
>
>
>
> From the README file, it says
>
>
>
> This layer depends on:
>
>
>
> URI: git://git.openembedded.org/openembedded-core <https://emea01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fgit.openembedded.org%2Fopenembedded-core&data=02%7C01%7Czhenhua.luo%40nxp.com%7C49c0bb21703e431e0bde08d5f1dc8d53%7C686ea1d3bc2b4c6fa92cd99c5c301635%7C0%7C0%7C636680851927504057&sdata=vJftn0GzW6Ip6RgRl9fzFDya5j%2Bl1PJM2kJFifli4pg%3D&reserved=0>
>
> branch: master
>
> revision: HEAD
>
>
>
> Do I need clone this layer to my Poky? Or OE core is already part of the
> Yocto 2.5?
>
>
>
> Thanks
>
> Qingyu
>

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newbie question

[horseriver]

hi:)

  If booting from geub ,  how to know the address where the grub loads bootsect and setup  to ?
 thanks!

newbie question

[santosh prasad nayak]

Hi all,

Just joined the mailing list.

I was going through the TODO list (
http://kernelnewbies.org/KernelJanitors/Todo )

For which branch fixes should be sent ?  3.26 ?? or 3.3-rc3 ?? or something
else ?


regards
santosh

Re: newbie question

[Dan Carpenter]

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On Sat, Feb 18, 2012 at 04:12:07PM +0530, santosh prasad nayak wrote:
> Hi all,
> 
> Just joined the mailing list.
> 
> I was going through the TODO list (
> http://kernelnewbies.org/KernelJanitors/Todo )
> 
> For which branch fixes should be sent ?  3.26 ?? or 3.3-rc3 ?? or something
> else ?
> 

Patches should always be done against linux-next.

regards,
dan carpenter


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Re: newbie question

[Dan Carpenter]

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On Sat, Feb 18, 2012 at 09:13:39PM +0530, santosh prasad nayak wrote:
> Thanks Dan for your quick response.
> 
> Where to submit the changes ?  linux-kernel mailing thread ? or
> kernel-janitors mailing thread ?
> 

Use the ./scripts/get_maintainer.pl script.  Mostly we don't CC lkml
unless there is no other devel list for the driver.

You may want to CC the first patch to kernel janitor list.
Everyone's first patch is always rejected and the kernel janitor
list is newbie friendly place to find out what you did wrong.  ;)

Btw.  Always CC the list.  I've added it back since there was
nothing private in this email.

regards,
dan carpenter


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Re: Newbie question

[George Spelvin]

Jakub Narebski wrote:
> You have the repository itself (the object database containg all
> version info plus other info).  Put those files and directories into
> <project>/.git subdirectory, and use "git checkout" from within it.
> You should have checked out files in <project>/ directory.

What he said.  Cloning it in the first place is the easier approach, but
what happened is that you got a copy of a "bare" repostitory (without
checked-out files, suitable only for remote access), which is typically
in a directory named "project.git".

What you want is a normal tree, where all the git files are in "project/.git"

This is pretty easy to do:

mkdir project
mv project.git project/.git
cd project
git config core.bare true
git checkout

That does 3 things:
- Set up the directory structure correctly,
- unset the core.bare flag, which disables certain commands that
  make no sense on a bare repository, and
- Check out a working copy

Re: Newbie question

[Thomas Hochstein]

George Spelvin wrote:

> git config core.bare true
[...]
> - unset the core.bare flag, which disables certain commands that
>   make no sense on a bare repository, and

Shouldn't that be
| git config core.bare false
then?

Regards,
-thh

Newbie question

[kinley]

Hi,
I am new to question. Please help me with this.
I copied an already existing project from a remote server using scp to my
local directory.
The contents of this directory are
   branches
   config
   description
   HEAD
   hooks
   info
   objects
   ref

I checked all the directories and sub-directories but could not find a
single source code file (in C language).
All I can see at the leaf level appear to be MD5 hash code.

Is there any command to retrieve the source files ? 
As per manual, only then I guess I can add them to git.

Any help would be appreciated.
Thanks
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Re: Newbie question

[Andrew Keller]

On Sep 19, 2010, at 7:51 PM, kinley wrote:

> Hi,
> I am new to question. Please help me with this.
> I copied an already existing project from a remote server using scp to my
> local directory.
> The contents of this directory are
>   branches
>   config
>   description
>   HEAD
>   hooks
>   info
>   objects
>   ref

This directory listing is what you would expect if you were looking at the repository itself.  To access your files in the repository, you want to create a non-bare (normal) clone.

git clone path-to-git-repo

On a side note, git can clone over ssh, so you don't need to use scp to copy a project over the network.  If your intent is to create a clone of a remote project on your computer, then cloning over ssh generally takes fewer commands than doing the copy manually first.

~ Andrew Keller

Re: Newbie question

[kinley]

Thanks for your help.

Actually now I tried doing this

git clone ssh://user@host/~/GPUProject/Histogram

but getting

bash: git-upload-pack: command not found
fatal: The remote end hung up unexpectedly

I tried several ways of specifying the path of the URL assuming that this
could be a path issue but every time it gives the same error.

Thanks once again.
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Re: Newbie question

[Imran M Yousuf]

Try:
git clone user@host:/home/user/GPUProject/Histogram/.git/

I added .git assuming that, that is the folder to which you gave the
ls output in your first email, the path should be upto that folder.

On Mon, Sep 20, 2010 at 6:50 AM, kinley <arjuncode@gmail.com> wrote:
>
> Thanks for your help.
>
> Actually now I tried doing this
>
> git clone ssh://user@host/~/GPUProject/Histogram
>
> but getting
>
> bash: git-upload-pack: command not found
> fatal: The remote end hung up unexpectedly
>
> I tried several ways of specifying the path of the URL assuming that this
> could be a path issue but every time it gives the same error.
>
> Thanks once again.
> --
> View this message in context: http://git.661346.n2.nabble.com/Newbie-question-tp5548737p5548842.html
> Sent from the git mailing list archive at Nabble.com.
> --
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> the body of a message to majordomo@vger.kernel.org
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>



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Re: Newbie question

[Kevin Ballard]

It sounds like git-upload-pack is not in the PATH of your non-interactive shell. Assuming git is installed on the remote host, you should ssh in to it and figure out where git is installed (run `git --exec-path`), then run your command like so

git clone -u /path/to/libexec/git-core/git-upload-pack ssh://user@host/~/GPUProject/Histogram

In my case that path is /usr/local/libexec/git-core/git-upload-pack.

-Kevin Ballard

On Sep 19, 2010, at 5:50 PM, kinley wrote:

> 
> Thanks for your help.
> 
> Actually now I tried doing this
> 
> git clone ssh://user@host/~/GPUProject/Histogram
> 
> but getting
> 
> bash: git-upload-pack: command not found
> fatal: The remote end hung up unexpectedly
> 
> I tried several ways of specifying the path of the URL assuming that this
> could be a path issue but every time it gives the same error.
> 
> Thanks once again.
> -- 
> View this message in context: http://git.661346.n2.nabble.com/Newbie-question-tp5548737p5548842.html
> Sent from the git mailing list archive at Nabble.com.
> --
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> the body of a message to majordomo@vger.kernel.org
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Re: Newbie question

[kinley]

Thanks Kevin and All.

Specifying the path of git-upload-pack helped.

Thanks once again.
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Re: Newbie question

[Jakub Narebski]

kinley <arjuncode@gmail.com> writes:

> I am new to question. Please help me with this.
> I copied an already existing project from a remote server using scp to my
> local directory.

In the future use "git clone <scp-location>" instead of 'scp'.

> The contents of this directory are
>    branches
>    config
>    description
>    HEAD
>    hooks
>    info
>    objects
>    ref
> 
> I checked all the directories and sub-directories but could not find a
> single source code file (in C language).
> All I can see at the leaf level appear to be MD5 hash code.
> 
> Is there any command to retrieve the source files ? 
> As per manual, only then I guess I can add them to git.

You have the repository itself (the object database containg all
version info plus other info).  Put those files and directories into
<project>/.git subdirectory, and use "git checkout" from within it.
You should have checked out files in <project>/ directory.

-- 
Jakub Narebski
Poland
ShadeHawk on #git

Re: Newbie question

[Alex Riesen]

On Mon, Sep 20, 2010 at 01:51, kinley <arjuncode@gmail.com> wrote:
>
> Hi,
> I am new to question. Please help me with this.
> I copied an already existing project from a remote server using scp to my
> local directory.
> The contents of this directory are
>   branches
>   config
>   description
>   HEAD
>   hooks
>   info
>   objects
>   ref
>
> I checked all the directories and sub-directories but could not find a
> single source code file (in C language).
> All I can see at the leaf level appear to be MD5 hash code.

It is SHA-1

> Is there any command to retrieve the source files ?

try this:

  git clone . ../Histogram

But others are right, and you should have used git clone, instead of scp.

newbie question

[Rich Pixley]

Can nilfs "roll back" to a previous state of the file system?

For example, at some time = T(N), I have a file system in a known good 
state.  So I check point it before taking a risky action.  Then I take a 
risky action which leads me to the file system state at T(N+1).

Sometimes, my risky action will be fine and I'll want to continue on.  
Other times, my risky action will result in a polluted, useless 
collection of data which I would like to discard.

I understand that at time T(N+1) nilfs will allow me to create a 
checkpoint of T(N) which can be mounted read-only.  What I'm asking is 
if nilfs can discard the state at T(N+1) and "roll back" to the state at 
T(N) as though T(N+1) had never happened.

Can nilfs do this kind of "roll back"?

--rich
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Re: newbie question

[Jérôme Poulin]

Sorry to say, but this is the first point in the TODO List:
Checkpoint rollback
See http://www.nilfs.org/en/current_status.html

However, I wonder if this has been worked on being the first point, I
guess it should not be hard to do, isn't that what NILFS does on boot
after an unclean shutdown?


On Thu, May 20, 2010 at 5:17 PM, Rich Pixley <rich.pixley-C65YXLrEp3M@public.gmane.org> wrote:
>
> Can nilfs "roll back" to a previous state of the file system?
>
> For example, at some time = T(N), I have a file system in a known good state.  So I check point it before taking a risky action.  Then I take a risky action which leads me to the file system state at T(N+1).
>
> Sometimes, my risky action will be fine and I'll want to continue on.  Other times, my risky action will result in a polluted, useless collection of data which I would like to discard.
>
> I understand that at time T(N+1) nilfs will allow me to create a checkpoint of T(N) which can be mounted read-only.  What I'm asking is if nilfs can discard the state at T(N+1) and "roll back" to the state at T(N) as though T(N+1) had never happened.
>
> Can nilfs do this kind of "roll back"?
>
> --rich
> --
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Re: newbie question

[Ryusuke Konishi]

Hi,
On Thu, 20 May 2010 14:17:20 -0700, Rich Pixley wrote:
> Can nilfs "roll back" to a previous state of the file system?
> 
> For example, at some time = T(N), I have a file system in a known good 
> state.  So I check point it before taking a risky action.  Then I take a 
> risky action which leads me to the file system state at T(N+1).
> 
> Sometimes, my risky action will be fine and I'll want to continue on.  
> Other times, my risky action will result in a polluted, useless 
> collection of data which I would like to discard.
> 
> I understand that at time T(N+1) nilfs will allow me to create a 
> checkpoint of T(N) which can be mounted read-only.  What I'm asking is 
> if nilfs can discard the state at T(N+1) and "roll back" to the state at 
> T(N) as though T(N+1) had never happened.
> 
> Can nilfs do this kind of "roll back"?
> 
> --rich

The "roll back" feature is one of our todo items, and not yet
supported.  At present, nilfs needs user's "copy back" operation to
roll back the state at T(N).

I think offline rollback is feasible, but I don't know whether it's
true of online rollback because the online rollback needs to discard
memory states of some sort or instead ensure consistency for the
processes which reside in the namespace of nilfs.  This may be done
in the same manner as file removal, but I don't know yet.

Cheers,
Ryusuke Konishi
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Re: newbie question

[K. Richard Pixley]

Ryusuke Konishi wrote:
> The "roll back" feature is one of our todo items, and not yet
> supported.
Is this something that could be accelerated by a suitable application of 
money?

--rich
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Re: newbie question

[Jiro SEKIBA]

Hi, Richard

At Thu, 27 May 2010 10:40:41 -0700,
K. Richard Pixley wrote:
> 
> Ryusuke Konishi wrote:
> > The "roll back" feature is one of our todo items, and not yet
> > supported.
> Is this something that could be accelerated by a suitable application of 
> money?

I may not understand your question, but technically speaking
it is possible to support roll back feature.
It's just a matter of work force to do as far as I think.

Still, there are some concerns about what the "roll back" sould be.

For instance, if you just want to restore from a specific snapshot you took,
you can simply read-only mount the snapshot and copy the contents you
want to restore.  That is done without any filesystem level roll back support.

Or you want to undone what you did in filesystem, you may be able to
delete log and set proper super block.  That is tricky, but possible
without filesystem level support if it's not mounted.

The hard one is live "roll back", I think, which undone the things on
mounted filesystem, or maybe at the boot time by specifying a checkpoint.

In any cases, there should be some utility programs to achieve the
functionalities above even it doesn't require any filesystem modifications.

thanks,

regards,


> --rich
> --
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> 
> 
> 


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Re: newbie question

[K. Richard Pixley]

Jiro SEKIBA wrote:
 > Hi, Richard
 >
 > At Thu, 27 May 2010 10:40:41 -0700,
 > K. Richard Pixley wrote:
 >
 >> Ryusuke Konishi wrote:
 >>
 >>> The "roll back" feature is one of our todo items, and not yet
 >>> supported.
 >>>
 >> Is this something that could be accelerated by a suitable 
application of
 >> money?
 >>
 >
 > I may not understand your question, but technically speaking
 > it is possible to support roll back feature.
 > It's just a matter of work force to do as far as I think.
 >
 > Still, there are some concerns about what the "roll back" sould be.
 >
 > For instance, if you just want to restore from a specific snapshot 
you took,
 > you can simply read-only mount the snapshot and copy the contents you
 > want to restore.  That is done without any filesystem level roll back 
support.
 >

Yes, but the copying requires a significant amount of time that I'm 
trying to avoid.

I start with a known good file system.  I snapshot it.  I take some 
speculative action.  And then, based on the result of the speculative 
action, I either want to create a new snapshot and continue on from 
there, or I want to "roll back" to the snapshot as though the 
speculative action had never taken place.

Effectively, I want to start with known good data and then "try 
something".  If the trial succeeds, then I have a new good state.  But 
if it fails, then my entire sub tree is polluted and needs to be 
replaced or rolled back before I can try something else.

This is akin to a parser with 1 item lookahead or to an AI search tree 
of depth 1.  That is, I'm looking for a cheap backtracking mechanism.

My first strategy involved rsync'ing a subtree elsewhere in the file 
system as my snapshotting mechanism and then using rsync to replace my 
current subtree when I needed to "roll back".  This costs two large 
copies and the copies take as much or more time than my transforms do. 
This means that the copies are the most expensive thing my system does.

My second strategy has been to use LVM snapshots.  The cost of rolling 
back is effectively zero, but I have a small problem in that snapshots 
can't be snapshotted, (that is, no recursion).  Instead, when the 
speculative action is successful, I either need to copy the successful 
data back to the original device or I need to repeat the speculative 
action on the original device, either of which are slow operations 
comparable to copying my entire subtree again.

What I really want is the ability to make a snapshot, take my 
speculative action, and then pick which one I want to keep moving 
forward, without needing to copy all of the data.

If I'm understanding nilfs2 semantics, then it's trivial to discard the 
snapshot but discarding the most recent state of the file system 
requires a long copy in user space.  I would expect that "roll back" 
would allow me to simply discard everything that has happened in the 
file system after a particular snapshot, (permanently and with no 
mechanism for recovery), returning the file system to that snapshot's 
state with read-write ability, and would do so significantly faster than 
copying my entire file system.

 > Or you want to undone what you did in filesystem, you may be able to
 > delete log and set proper super block.  That is tricky, but possible
 > without filesystem level support if it's not mounted.

It this is true, then I'd like to see it in one of the utility programs.

 > The hard one is live "roll back", I think, which undone the things on
 > mounted filesystem, or maybe at the boot time by specifying a checkpoint.

For my application, it would be sufficient to "roll back" while the 
system was unmounted, or to somehow mark the portions to be discarded 
and then remount at the checkpoint I want to keep.

 > In any cases, there should be some utility programs to achieve the
 > functionalities above even it doesn't require any filesystem 
modifications.

It seems to me that there's not really any conflict about what might be 
provided, but more a question of the degree to which guarantees are kept 
during the process.

"Rolling back" is a clearly desirable feature.  The declarations should 
be made using one of the utility programs.  Doing so on an unmounted 
file system is a win over not doing it at all.  And doing it on a 
mounted file system is a win over doing it on an unmounted file system.

--rich
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Re: newbie question

[K. Richard Pixley]

I don't know nilfs2 internals, but it occurs to me that a "forward" or 
"leap frog" mechanism might work too.

That is, if a file system is in a state at time T(0), and is in another 
state at time T(1), then what I'm looking for is the ability to return 
to a read-write file system with state T(0).

One way to do that might be to "roll back" from state T(1), thereby 
discarding state T(1).  But another way to accomplish this might be to 
surgically construct a state T(2) which occurs after T(1) and was 
identical to T(0), leaving T(1) available as a read-only snapshot.

We do this in source control.  Rather than backing out a particular 
change to your source tree, many source control systems require you to 
commit a reverse diff.  This creates a new revision, but a new revision 
which is identical to an earlier revision which has the apparent affect 
of removing a change.

I don't know if this would be any easier, but it's a thought.

--rich
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newbie question

[Gergely Buday]

Dear All,

I have a basic question: I need to enable a cvs server to telnet back
to port 2401 as described at

http://forums.fedoraforum.org/archive/index.php/t-37342.html

---
> $ cvs login
> Logging in to :pserver:rob@<hostname>:2401/home/repository
> CVS password:
> cvs [login aborted]: connect to <hostname>(<IP address>):2401
> failed: No route to host
>
> i've verified that the network is up, that i can ssh into the
> server, that xinetd is running, that cvspserver is on, that the
> CVS repo is unchanged from what it was before the re-install,
> etc. i'm not sure what else i might be checking.

You should be able to telnet into your server from a remote system
on port 2401 to your pserver box. If not, perhaps you haven't
opened up your iptables firewall for access to this port?
---

how can I do that with iptables temporarily?

- Gergely

newbie question

[Alex K]

Hello,

I would think the following simple pattern would be possible:

Create two branches A and B. Switch to A, modify some files, do not
commit to A, switch to B. Now B should not show any of the changes
performed to A? However a git status while on B does show that the
files on A have been modified. Is there something I am missing?

Thank you,

Alex

Re: newbie question

[dloewenherz]

Until you commit the files, the changes will follow you to whatever branch
you go to. If you don't want to commit, but still want to switch to B and
not see the changes in A, I would recommend using `git stash`.

e.g.

git checkout A
...edit...
git stash save changes
git checkout B
git status

You'll see that your tree is clean. To get your changes back to A, just run

git checkout A
git stash pop changes

Best,
Dan

On 03/07/09 11:39 -0700, Alex K wrote:
>Hello,
>
>I would think the following simple pattern would be possible:
>
>Create two branches A and B. Switch to A, modify some files, do not
>commit to A, switch to B. Now B should not show any of the changes
>performed to A? However a git status while on B does show that the
>files on A have been modified. Is there something I am missing?
>
>Thank you,
>
>Alex
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Re: newbie question

[Junio C Hamano]

Alex K <spaceoutlet@gmail.com> writes:

> I would think the following simple pattern would be possible:
>
> Create two branches A and B. Switch to A, modify some files, do not
> commit to A, switch to B. Now B should not show any of the changes
> performed to A? However a git status while on B does show that the
> files on A have been modified. Is there something I am missing?

Yes, you are missing the basic concept of how git works and how to work
with git.

"Switch to A, modify some files, do not commit to A".

The modification does _not_ belong to A at this point yet.

Then you "switch to B."  At this point, you switched branches and carried
your modification along with you.  B does _not_ show any of the changes
performed to A, as you never committed to A yet.

What you see is the changes you performed to your _work tree_ (and your
_index_, if you are using it).

And this is a deliberately designed behaviour.  When you start hacking on
something, you often do not know many things a-priori, including

 - if the change is small and simple enough that you can finish it in a
   single sitting;

 - what is the oldest branch that the change is necessary

The former means that you may start working on a cool feature while you
have a checkout of your 'master' branch, but then you realize that the
necessary changes are much more involved than what you originally thought,
and you are better off building that feature on a new side branch while
you have to work on completing it, and in the meantime, you would want to
keep your 'master' branch clean, so you do _not_ want to commit any of
this work-in-progress there.  So the behaviour allows you to do this:

    $ hack hack hack ;# yeah, looking good
    $ hack hack      ;# oops, this is a bit more complex than I thought
    $ git checkout -b cool-feature
    $ hack more ;# good point to snapshot even though it is not complete
    $ git commit 
    $ hack even more ;# oops, boss tells me to fix something else right away
    $ git commit -a -m 'WIP' ;# I'll come back to it later
    $ git checkout master
    $ work test work test ;# handle boss's wish
    $ git commit -a -m 'Urgent fix'
    $ git push origin master ;# emergency handled well
    $ git checkout cool-feature
    $ hadk hack ;# continue working
    ...

Notice the third step where you switch to the branch cool-feature (newly
created).  You are taking your changes up to that point in your work tree
along with you when starting to work in that branch, and it is a good
thing.

The latter means that you may start fixing a bug while you have a checkout
of your 'master' branch, but then realize that the bug has existed from a
long time ago, and the same fix needs to go to your maintenance branch.
Again, the behaviour allows you to do this:

    $ fix test fix test ;# Ok, I think it is good.
    $ git blame HEAD -- broken.rb ;# where did this bug came from anyway?
    ... find the commit that introduced the bug from the above blame ...
    $ git branch --with $commit ;# on which branches is the bad commit in?
    ... realize that the maintenance branch also has the same bug ...
    $ git checkout maint
    $ test it again
    $ git commit ;# commit fix to the oldest applicable branch
    $ git checkout master
    $ git merge maint ;# and propagate it upwards

Again, notice that the "checkout" to switch to the 'maint' branch takes
the changes in your work tree along with you, and that is what allows you
to fix the bug in the oldest applicable branch.

It also happens that you notice an unrelated breakage while working on
something on a topic branch 'feature', and realize that the breakage is
grave enough that you should fix it on 'master' branch.  You would do
this:

    $ git checkout feature ;# let's do a cool feature
    $ edit feature.rb ;# yeah, looking good
    $ edit broken.rb ;# this is unrelated
    $ git checkout master
    $ git add broken.rb ;# only add the fix to the index
    $ git commit -m 'Fix' ;# never use "commit -a" when you do this
    $ git checkout feature ;# continue working

Again, because the changes to broken.rb (together with the changes to
feature.rb) are carried across branch switching, you can fix the buggy  
code on your master branch, and come back (again, taking the changes to
feature.rb with you) to continue.

Re: newbie question

[Sitaram Chamarty]

On 2009-07-03 19:22:49, Junio C Hamano <gitster@pobox.com> wrote:

>     $ git branch --with $commit ;# on which branches is the bad commit in?

--with?  Did --contains get an alternative form?

Re: newbie question

[Michael J Gruber]

Sitaram Chamarty venit, vidit, dixit 04.07.2009 02:29:
> On 2009-07-03 19:22:49, Junio C Hamano <gitster@pobox.com> wrote:
> 
>>     $ git branch --with $commit ;# on which branches is the bad commit in?
> 
> --with?  Did --contains get an alternative form?
> 

No, it always had one :)

git log -S'"with"' --pretty=oneline
694a577519a762d12b8a53e76b6f1dd3ccf25e7d git-branch --contains=commit

Cheers,
Michael

Re: OE and the developing host

[Hans Henry von Tresckow]

On 2/28/07, Koen Kooi <koen@dominion.kabel.utwente.nl> wrote:
>
>
> OpenSuSE should work as well, but stay away from Red Hat/Fedora based
> stuff, since you
> can't build a working qemu-native on that.
>
> regards,
>
> Koen


Has anybody ever tried to figure out which  Red Hat'isms might be causing
the problem?

OE and the developing host

[Nicola Ranaldo]

I use OE on a gentoo box. This morning i updated the system, and the new 
linux-headers package removed /usr/include/asm/page.h. So when building my 
angstrom image it failed with perl asking to include that file. This problem 
was discussed on the gentoo bug and after applying a simple workaround i was 
able to emerge perl on the gentoo box and perl native on OE.
After a while the oe build stopped on esound, this was caused by a malfunction 
of /usr/lib/libosp.so.5 on gentoo, i reemerged it and solved the problem. Now 
the armstrong-gpe-image is complete. But this introduced a doubt. OE build 
some tools directly, and use other directly from the build host, so it could 
be teoretically possible to produce different images on different host. Is 
there a way or a plan to avoid it and make OE build host independant 
(supposing i was correct)? If not, what's the most used/supported distro by 
OE developers?

Regards

	Niko

Re: OE and the developing host

[Richard Purdie]

On Wed, 2007-02-28 at 11:09 +0100, Nicola Ranaldo wrote:
> I use OE on a gentoo box. This morning i updated the system, and the new 
> linux-headers package removed /usr/include/asm/page.h. So when building my 
> angstrom image it failed with perl asking to include that file. This problem 
> was discussed on the gentoo bug and after applying a simple workaround i was 
> able to emerge perl on the gentoo box and perl native on OE.
> After a while the oe build stopped on esound, this was caused by a malfunction 
> of /usr/lib/libosp.so.5 on gentoo, i reemerged it and solved the problem. Now 
> the armstrong-gpe-image is complete. But this introduced a doubt. OE build 
> some tools directly, and use other directly from the build host, so it could 
> be teoretically possible to produce different images on different host. Is 
> there a way or a plan to avoid it and make OE build host independant 
> (supposing i was correct)? If not, what's the most used/supported distro by 
> OE developers?

*-native packages can touch things on the system, any other packages
shouldn't and if they were found to be, it would be a bug and should be
fixed.

Its never going to be possible to make make OE build everything it needs
itself since you always need some prerequisites (e.g. a initial
toolchain).

Personally, I use OE/Poky on Ubuntu and Slackware. There are others
using Gentoo and other systems. Ideally it should work on most systems,
you might see problems with -native packages, you shouldn't see problems
with non -native ones.

Cheers,

Richard

Re: OE and the developing host

[Koen Kooi]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Richard Purdie schreef:
> On Wed, 2007-02-28 at 11:09 +0100, Nicola Ranaldo wrote:
>> I use OE on a gentoo box. This morning i updated the system, and the new 
>> linux-headers package removed /usr/include/asm/page.h. So when building my 
>> angstrom image it failed with perl asking to include that file. This problem 
>> was discussed on the gentoo bug and after applying a simple workaround i was 
>> able to emerge perl on the gentoo box and perl native on OE.
>> After a while the oe build stopped on esound, this was caused by a malfunction 
>> of /usr/lib/libosp.so.5 on gentoo, i reemerged it and solved the problem. Now 
>> the armstrong-gpe-image is complete. But this introduced a doubt. OE build 
>> some tools directly, and use other directly from the build host, so it could 
>> be teoretically possible to produce different images on different host. Is 
>> there a way or a plan to avoid it and make OE build host independant 
>> (supposing i was correct)? If not, what's the most used/supported distro by 
>> OE developers?
> 
> *-native packages can touch things on the system, any other packages
> shouldn't and if they were found to be, it would be a bug and should be
> fixed.
> 
> Its never going to be possible to make make OE build everything it needs
> itself since you always need some prerequisites (e.g. a initial
> toolchain).
> 
> Personally, I use OE/Poky on Ubuntu and Slackware. There are others
> using Gentoo and other systems. Ideally it should work on most systems,
> you might see problems with -native packages, you shouldn't see problems
> with non -native ones.

OpenSuSE should work as well, but stay away from Red Hat/Fedora based stuff, since you
can't build a working qemu-native on that.

regards,

Koen
-----BEGIN PGP SIGNATURE-----
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QBxJdxBCXm9FOkjUjGcQ0Xc=
=opJZ
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Re: OE and the developing host

[Philip Balister]

[-- Attachment #1: Type: text/plain, Size: 445 bytes --]

Hans Henry von Tresckow wrote:
> On 2/28/07, Koen Kooi <koen@dominion.kabel.utwente.nl> wrote:
>>
>> OpenSuSE should work as well, but stay away from Red Hat/Fedora based
>> stuff, since you
>> can't build a working qemu-native on that.
>>
>> regards,
>>
>> Koen
> 
> 
> Has anybody ever tried to figure out which  Red Hat'isms might be causing
> the problem?

OE works fine for me on FC6, but I don't use qemu-native.

Philip

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[-- Type: application/x-pkcs7-signature, Size: 3303 bytes --]

Newbie Question

[Lee Studley]

Hi,
As a newbie, what is the opinion for an easier jump on the learning curve:

Using open embedded with ubunto or gentoo ?

Thanks, -Lee

Re: Newbie Question

[gerwin van der kruis]

Op woensdag 28-02-2007 om 13:27 uur [tijdzone -0700], schreef Lee
Studley:
> Hi,
> As a newbie, what is the opinion for an easier jump on the learning curve:
> 
> Using open embedded with ubunto or gentoo ?

I would say ubuntu

Regards, 

Gerwin

Re: Newbie Question

[Richard Purdie]

On Wed, 2007-02-28 at 21:30 +0100, gerwin van der kruis wrote:
> Op woensdag 28-02-2007 om 13:27 uur [tijdzone -0700], schreef Lee
> Studley:
> > Hi,
> > As a newbie, what is the opinion for an easier jump on the learning curve:
> > 
> > Using open embedded with ubunto or gentoo ?
> 
> I would say ubuntu

Agreed, Ubuntu is less of a moving target and known to work.

Regards,

Richard

Re: Newbie Question

[Justin Patrin]

On 2/28/07, Richard Purdie <rpurdie@rpsys.net> wrote:
> On Wed, 2007-02-28 at 21:30 +0100, gerwin van der kruis wrote:
> > Op woensdag 28-02-2007 om 13:27 uur [tijdzone -0700], schreef Lee
> > Studley:
> > > Hi,
> > > As a newbie, what is the opinion for an easier jump on the learning curve:
> > >
> > > Using open embedded with ubunto or gentoo ?
> >
> > I would say ubuntu
>
> Agreed, Ubuntu is less of a moving target and known to work.
>

Gentoo has worked fine for me for quite some time, but if you are new
to it you may want to go with ubuntu to lessen your "get up to speed"
time.

-- 
Justin Patrin

Re: Newbie Question

[Patrick Fischer]

Justin Patrin wrote:
> On 2/28/07, Richard Purdie <rpurdie@rpsys.net> wrote:
>   
>> On Wed, 2007-02-28 at 21:30 +0100, gerwin van der kruis wrote:
>>     
>>> Op woensdag 28-02-2007 om 13:27 uur [tijdzone -0700], schreef Lee
>>> Studley:
>>>       
>>>> Hi,
>>>> As a newbie, what is the opinion for an easier jump on the learning curve:
>>>>
>>>> Using open embedded with ubunto or gentoo ?
>>>>         
>>> I would say ubuntu
>>>       
>> Agreed, Ubuntu is less of a moving target and known to work.
>>     
There is an existing howto for Debian Sarge. It works  for Ubuntu too 
except two complement.
*apt-get install texinfo
*use the binary monotone from the monoton homepage

Re: Newbie Question

[Vladislav Grinchenko]

Lee, 

On Wed, 2007-02-28 at 13:27 -0700, Lee Studley wrote:
> Hi,
> As a newbie, what is the opinion for an easier jump on the learning curve:
> 
> Using open embedded with ubunto or gentoo ?
> 

neither - try Fedora Core 6 instead.

here's the instructions:

http://home.comcast.net/~3rdshift/articles/OE-Devel-Notes-1.0.html

scroll down to "Install and Build SDK ..." section

-Vlad

> Thanks, -Lee
> 
> 
> _______________________________________________
> Openembedded-devel mailing list
> Openembedded-devel@lists.openembedded.org
> http://lists.linuxtogo.org/cgi-bin/mailman/listinfo/openembedded-devel

Newbie question

[digital tech support]

[-- Attachment #1.1: Type: text/plain, Size: 466 bytes --]

Forgvie me if this is the wrong list and point me to the right one .. 

I have FC6 guest running and I can connect to my LAN from the guest OS. How do I ssh into the guest from the host?

Host IP: 192.168.0.139
Guest IP: 10.0.2.15

Should add a route to 10.0.2.0 network on my host?

Thanks
Josh

 __________________________________________________
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Re: Newbie question

[Lonnie Mendez]

On Tue, 2007-01-02 at 15:46 -0800, digital tech support wrote:
> Forgvie me if this is the wrong list and point me to the right one .. 
> 
> I have FC6 guest running and I can connect to my LAN from the guest
> OS. How do I ssh into the guest from the host?
> 
> Host IP: 192.168.0.139
> Guest IP: 10.0.2.15
> 
> Should add a route to 10.0.2.0 network on my host?

No.  The default user mode network is completely isolated from the host.
Use -redir to open a listening port on the host:

-redir tcp:5500::22

Then from host ssh -p 5500 localhost


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Re: Newbie question

[digital tech support]

[-- Attachment #1.1: Type: text/plain, Size: 841 bytes --]


Lonnie Mendez <lmendez19-bs+DcK7cjk954TAoqtyWWQ@public.gmane.org> wrote: On Tue, 2007-01-02 at 15:46 -0800, digital tech support wrote:
> Forgvie me if this is the wrong list and point me to the right one .. 
> 
> I have FC6 guest running and I can connect to my LAN from the guest
> OS. How do I ssh into the guest from the host?
> 
> Host IP: 192.168.0.139
> Guest IP: 10.0.2.15
> 
> Should add a route to 10.0.2.0 network on my host?

No.  The default user mode network is completely isolated from the host.
Use -redir to open a listening port on the host:

-redir tcp:5500::22

Then from host ssh -p 5500 localhost

That was easy! Thanks it works! 

Josh

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Tired of spam?  Yahoo! Mail has the best spam protection around 
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Re: Newbie question

[Dor Laor]

Thanks for the Solaris info :)

Another option is to use a tap device option.
Checkout the scripts directory for 'kvm' init script that creates a
bridge, and the matching 'kvm' python script on the root kvm dir that
calls qemu with the right parameters.

Also please use text messages on the list.

________________________________________
From: kvm-devel-bounces-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org
[mailto:kvm-devel-bounces-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org] On Behalf Of digital
tech support
Sent: Wednesday, January 03, 2007 3:00 AM
To: Lonnie Mendez; kvm-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org
Subject: Re: [kvm-devel] Newbie question


Lonnie Mendez <lmendez19-bs+DcK7cjk954TAoqtyWWQ@public.gmane.org> wrote:
On Tue, 2007-01-02 at 15:46 -0800, digital tech support wrote:
> Forgvie me if this is the wrong list and point me to the right one .. 
> 
> I have FC6 guest running and I can connect to my LAN from the guest
> OS. How do I ssh into the guest from the host?
> 
> Host IP: 192.168.0.139
> Guest IP: 10.0.2.15
> 
> Should add a route to 10.0.2.0 network on my host?

No. The default user mode network is completely isolated from the host.
Use -redir to open a listening port on the host:

-redir tcp:5500::22

Then from host ssh -p 5500 localhost
That was easy! Thanks it works! 

Josh
 __________________________________________________
Do You Yahoo!?
Tired of spam? Yahoo! Mail has the best spam protection around 
http://mail.yahoo.com 

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Newbie question

[Michael Weber]

Greetings, all!

I am trying to get my database server to use a pair of QLogic 2460's as
a redundant data path.  The OS is Red Hat ES 4.

Right now I am just looking to know if this is a forum where I can get
some help with configuring the multipath.conf file, et. al.  If this is
a good place, I will ask again with all the needed info.

If not, can someone point me in the right direction?

(I tried Red Hat already, BTW.  No joy.)

Thanx!

-Michael


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Re: Newbie question

[Dave Wysochanski]

On Tue, 2006-11-21 at 16:37 -0600, Michael Weber wrote:
> Greetings, all!
> 
> I am trying to get my database server to use a pair of QLogic 2460's as
> a redundant data path.  The OS is Red Hat ES 4.
> 
> Right now I am just looking to know if this is a forum where I can get
> some help with configuring the multipath.conf file, et. al.  If this is
> a good place, I will ask again with all the needed info.
> 
> If not, can someone point me in the right direction?
> 
> (I tried Red Hat already, BTW.  No joy.)
> 

Sure you can ask.  Did you search the archives though?
http://tinyurl.com/uhyuq

Often depending on your storage there are specific recommendations from
the storage vendor, so you might also want to consult them directly.

Re: Newbie question

[Bernd Zeimetz]

Hello,
> Right now I am just looking to know if this is a forum where I can get
> some help with configuring the multipath.conf file, et. al.  If this is
> a good place, I will ask again with all the needed info.
>   
http://christophe.varoqui.free.fr/wiki/wakka.php?wiki=Home
is also a good place to look for info.



Best regards,

Bernd

Newbie question

[Eric Benton]

Hi,

How can I build the Xen0 kernel with ntfs support?

Thanks,
Eric.

Newbie question

[Kobus Wolvaardt]

Hi,

I'm trying to build grub for an embedded system. I'm working in gentoo and I 
have most of my stuff up and running. I use kernel 2.6.11, i've compiled mtd 
support and after lots of headaces (and then changing to a workind doc) I got 
the doc to recognize.

Not for the question.... I have Karim Yaghmour's book and I tried to follow 
the instructions to the letter. Problem is it doesnt compile: error below. (I 
can only think that it has something to do with a too new gcc version, any 
other idees) And more importantly how do I fix it or what newer version of 
the grub patch can I download (where, cvs?) and what version of grub can be 
patched with it?

Thanks a million,
Kobus




////////////////command and compile error
as  -DHAVE_CONFIG_H -I. -I. -I.. -I../stage1 -Wall -Wmissing-prototypes 
-Wunused -Wshadow -Wpointer-arith -malign-jumps=1 -malign-loops=1 
-malign-functions=1 -Wundef -g -c `test -f asm.S || echo './'`asm.S
as: unrecognized option `-HAVE_CONFIG_H'
/////////////////

-- 
This message was scanned for viruses by MailScanner and Sophos.

newbie question

[Li Yang-r58472]

I just starting to use git recently.  I have setup a public repository, and pushed cloned open source repository to it.  As most documents suggested, I need to run a repack on the public repository.  Normally git-repack is run in the source directory(the parent directory of .git).  Considering the public repository, there is no source directory and the *.git is the uppest level directory.  Where am I supposed to run the git-repack command?

Re: newbie question

[Matthias Kestenholz]

Hello,

* Li Yang-r58472 (LeoLi@freescale.com) wrote:
> I just starting to use git recently.  I have setup a public repository,
> and pushed cloned open source repository to it.  As most documents 
> suggested, I need to run a repack on the public repository.  Normally 
> git-repack is run in the source directory(the parent directory of .git).  
> Considering the public repository, there is no source directory and the
> *.git is the uppest level directory.  Where am I supposed to run the
> git-repack command?

Do it like that:

$ ls
project.git
$ GIT_DIR=project.git git-repack -a -d

newbie question

[phess.linux]

Hi there!

First I have to say that I'm a newbie without any experience with "linux
kernel". So don't blame me ;-)

I downloaded toolchains from MIPS Technologies.
I downloaded the newest version Linux 2.6.14-rc1 via CVS.

I installed the toolchain and tested some examples like "hello world" and
"minicom". They worked fine. I copied the linux kernel into a new folder of
the toolchain example directory. Then I tried to make (with command sde-make
menuconfig and then sde-make SBD=GSIM32L) the linux kernel. But all I get
are the following five lines:

  CHK     include/linux/version.h
  CC      arch/mips/kernel/asm-offsets.s
gcc: cannot specify -o with -c or -S and multiple compilations
sde-make[1]: *** [arch/mips/kernel/asm-offsets.s] Error 1
sde-make: *** [prepare0] Error 2

Now I need some help. Thx!

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Re: newbie question

[Nigel Stephens]

phess.linux@streber24.de wrote:

>Hi there!
>
>First I have to say that I'm a newbie without any experience with "linux
>kernel". So don't blame me ;-)
>
>I downloaded toolchains from MIPS Technologies.
>I downloaded the newest version Linux 2.6.14-rc1 via CVS.
>
>I installed the toolchain and tested some examples like "hello world" and
>"minicom". They worked fine. I copied the linux kernel into a new folder of
>the toolchain example directory. Then I tried to make (with command sde-make
>menuconfig and then sde-make SBD=GSIM32L) the linux kernel. But all I get
>are the following five lines:
>  
>

Don't try to use the bare-iron/embedded MIPS SDE toolchain to build a 
Linux kernel. Instead use the version which is configured as a Linux 
native or cross compiler. See 
http://www.linux-mips.org/wiki/Toolchains#MIPS_SDE

Nigel

newbie question

[raphael]

Hello list

I would like to know how i can manage to read the entry
on the keyboard without using C functions like scanf or get.

thank you for the help and forgive my poor english

Raphael

Re: newbie question

[jeff]

On 09/03/2005 10:16 am, raphael wrote:
> I would like to know how i can manage to read the entry
> on the keyboard without using C functions like scanf or get.

You can use kernel calls.  The keyboard operates in two
modes and you need to select the mode first.

In raw mode each key press is provided.  In cooked mode
a whole line of data is provided when <enter> key pressed.

There are lots of examples, but the code looks like this:
 1. select mode, save previous mode
 2. wait for key press
 3. restore mode

Here is some code from asmlib.  It shows handling of multi
byte keys and the mouse.  This is probably does more than
you want, but may be useful.

  [section .text]

 extern raw_set2
 extern raw_unset2
 extern kbuf
 extern key_poll
 extern mouse_check
 extern poll_rtn
 extern kbuf_end
 extern key_flush
     

;   read_stdin - read stdin data to "kbuf"
; INPUTS
;   none
; OUTPUT
;   kbuf - contains keys read with zero termination
; NOTES
;    source file: read_stdin.asm
;
;    read_stdin calls raw_set2 to put keyboard in  raw
;    mode.  It then reads data to "kbuf" and calls
;    "raw_unset2 to restore terminal state.
;
  global read_stdin
read_stdin:
  call	raw_set2			;set raw mode and save previous mode
km_10:
  mov	ecx,kbuf
more_keys:
  mov	eax,3			;kernel read call
  mov	edx,1			;read one byte
  mov	ebx,0			;read stdin
  int	80h
  or	eax,eax
  js	km_15
  add	ecx,eax			;advance buffer ptr
  call	key_poll
  test	byte [poll_rtn],8	;check for error
  jz	km_20
km_15:
  call	key_flush
  jmp	short km_10
km_20:
  cmp	ecx,kbuf_end
  je	k_exit			;exit if buffer full
  test	byte [poll_rtn],1
  jnz	more_keys
k_exit:
  mov	byte [ecx],0		;terminate string
  call	mouse_check		;check if mouse data read
  call	raw_unset2
  ret 

Re: newbie question

[Martin Fflores]

hi people, how i can have noticie that a key was pressed , but reading at 
port 60h, my problem is that i cant find a good documentation, if some one 
have some sourcecode(in ATT Assembly)Documentation or web link that will be 
great.

Take Folks.

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newbie question

[gxkahn]

Hi

i have to build driver for my NOR chip.
can't find explanation where to put it in MTD.
is there any manual/tutorial ?

newbie question

[Michael]

Hi,=20

how can I understand following output from "tcpdump -p", at that time,
I am "dd" a file into a nfs mount point. Can anyone send me a
reference link to me? especially what's the meaning of "frag
55141:1292@2960", what's "DF"...

11:40:16.499209 192.168.0.148.3554257722 > 192.168.0.90.nfs: 1472
write [|nfs] (frag 55140:1480@0+)
11:40:16.499412 192.168.0.90.nfs > 192.168.0.148.3302599482: reply ok 136 (=
DF)
11:40:16.499450 192.168.0.148 > 192.168.0.90: udp (frag 55141:1292@2960)
11:40:16.499458 192.168.0.148 > 192.168.0.90: udp (frag 55141:1480@1480+)
11:40:16.499464 192.168.0.148.3571034938 > 192.168.0.90.nfs: 1472
write [|nfs] (frag 55141:1480@0+)
11:40:16.499777 192.168.0.90.nfs > 192.168.0.148.3319376698: reply ok 136 (=
DF)
11:40:16.499813 192.168.0.148 > 192.168.0.90: udp (frag 55142:1292@2960)
11:40:16.499821 192.168.0.148 > 192.168.0.90: udp (frag 55142:1480@1480+)

Thank,

Mike


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Re: newbie question

[mehta kiran]

Just in case you need it ....
For more readable output use=20
tethereal -V
--- Michael <mikore.li@gmail.com> wrote:

> Hi,=20
>=20
> how can I understand following output from "tcpdump
> -p", at that time,
> I am "dd" a file into a nfs mount point. Can anyone
> send me a
> reference link to me? especially what's the meaning
> of "frag
> 55141:1292@2960", what's "DF"...
>=20
> 11:40:16.499209 192.168.0.148.3554257722 >
> 192.168.0.90.nfs: 1472
> write [|nfs] (frag 55140:1480@0+)
> 11:40:16.499412 192.168.0.90.nfs >
> 192.168.0.148.3302599482: reply ok 136 (DF)
> 11:40:16.499450 192.168.0.148 > 192.168.0.90: udp
> (frag 55141:1292@2960)
> 11:40:16.499458 192.168.0.148 > 192.168.0.90: udp
> (frag 55141:1480@1480+)
> 11:40:16.499464 192.168.0.148.3571034938 >
> 192.168.0.90.nfs: 1472
> write [|nfs] (frag 55141:1480@0+)
> 11:40:16.499777 192.168.0.90.nfs >
> 192.168.0.148.3319376698: reply ok 136 (DF)
> 11:40:16.499813 192.168.0.148 > 192.168.0.90: udp
> (frag 55142:1292@2960)
> 11:40:16.499821 192.168.0.148 > 192.168.0.90: udp
> (frag 55142:1480@1480+)
>=20
> Thank,
>=20
> Mike
>=20
>=20
>
-------------------------------------------------------
> SF.Net email is Sponsored by the Better Software
> Conference & EXPO
> September 19-22, 2005 * San Francisco, CA *
> Development Lifecycle Practices
> Agile & Plan-Driven Development * Managing Projects
> & Teams * Testing & QA
> Security * Process Improvement & Measurement *
> http://www.sqe.com/bsce5sf
> _______________________________________________
> NFS maillist  -  NFS@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/nfs
>=20


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Tired of spam?  Yahoo! Mail has the best spam protection around=20
http://mail.yahoo.com=20


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es
Agile & Plan-Driven Development * Managing Projects & Teams * Testing & Q=
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Security * Process Improvement & Measurement * http://www.sqe.com/bsce5sf
_______________________________________________
NFS maillist  -  NFS@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/nfs

Newbie question

[observer]

Hi,
Can somebody please help me with this?
I have a usb floppy and when i insert it in the system it doesnt appear
in the usermount app, i have seen the logs and updfstab is run, but
fstab is not modified. Please how can i make the floppy configured
correctly whith hotplug, im usin Fedora Core 2 whith kudzu disabled but
installed, i prefer using only hotplug for this.
Sorry for my bad english.
Thanks in advance. 



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Newbie Question...

[David Templer]

Hi,

I would like to try Xen but I have a couple of questions ....

Is setting up Xen similar to installing a distro ... ? if so how does 
Xen seperate virtual machines (& is possible to switch between them?)

I have 40gb spare is that enough to run a couple of VM just to test it out ?

Dave T.


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Re: Newbie Question...

[aq]

I am a newbie too, but I can answer of your some questions:

> Is setting up Xen similar to installing a distro ... ?
That is different. Xen use paravirtualizaion technique, so the kernel
must be tweaked a little bit. You cannot install distro in normal way.
Please read the Xen manual at homepage.

Also take a look at the papers at
http://www.cl.cam.ac.uk/Research/SRG/netos/xen/architecture.html to
understand about Xen's architecture.

regards,
AQ


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Re: Newbie Question...

[M.A. Williamson]

> Is setting up Xen similar to installing a distro ... ?

No, you install by dropping the Xen hypervisor and XenLinux kernel down 
onto your existing distro install and adding a grub entry to boot them. 
It's like a kernel install (plus a few user tools on top). See the manual 
for more details ;-)

> if so how does 
> Xen seperate virtual machines (& is possible to switch between them?)

Each virtual machine needs a separate root filesystem installed. There's a 
number of ways you can do this: * boot a distro install CD, make a new 
partition for the VM and do an install into that partition. Then boot back 
into your main distro and set up a VM to boot off that partition. * if 
you're using Redhat, you can use anaconda --root (I think) to install a new 
filesystem into some directory or disk file * if you're using SuSE, you 
could probably use the UML install tool to create a new SuSE filesystem and 
then tweak the disk image to work in a Xen VM * if you want to use Debian 
in your VM, you can download the debootstrap tool and use that to install 
into a directory or disk image (steps for this are described in the user 
manual) * you could copy files from your existing distro filesystem to 
create the new filesystem - this is described in the user manual

> I have 40gb spare is that enough to run a couple of VM just to test it 
> out ?

Sure thing! If it's enough space to install multiple distros on your disk 
then it's enough space to install them an run them under Xen. If you're 
using the same distro in all domains, you could also consider sharing a 
/usr partition between them.

Note that the user manual provides a tutorial based around a modified 
version of ttylinux (available from our SF.net page). This can run out of a 
disk file and only requires about 4meg of space.

HTH,
Mark


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RE: Newbie Question

[Rigler, Steve]

It looks like the 4.1.3-13 is built against/dependant on OpenLDAP 2.2.

IIRC, RH8 comes with OpenLDAP 2.0.x.

-Steve

-----Original Message-----
From: autofs-bounces@linux.kernel.org
[mailto:autofs-bounces@linux.kernel.org] On Behalf Of Anne.Bourgeois
Sent: Thursday, August 12, 2004 1:44 PM
To: jmoyer@redhat.com
Cc: autofs@linux.kernel.org
Subject: Re: [autofs] Newbie Question

Jeff,

My apologies.  I should have included more info in my original post.  
Please see my answers below...

Jeff Moyer wrote:

>==> Regarding [autofs] Newbie Question; "Anne.Bourgeois"
<anne.bourgeois@analog.com> adds:
>
>anne> I am pretty new to the list, and I have a very basic question.
How
>anne> do I install the kernel patch so that I can install the autofs
rpm?
>
>What distribution are you running?  Do you want to patch a kernel from
that
>distribution (recommended), or run a vanilla kernel from kernel.org?
>
>  
>
We are currently running RedHat 8.0 with the 2.4.20.20-8smp kernel.  We 
are looking to go to Enterprise 3 in the near future, but are dependent 
on some software vendors, so we are holding back at the moment.  We are 
seeing several autofs issues, which is the reason that I am trying these

updates.

>anne> When I tried to just install the new autofs rpm, I got a
dependency
>anne> error:
>
>anne>         liblber-2.2.so.7 is needed by autofs-4.1.3-13
>anne> libldap-2.2.so.7 is needed by autofs-4.1.3-13
>
>If you're running Fedora, I'd suggest upgrading your current system
with
>yum.
>
>  
>
I'd prefer not to change the basic system that I'm running, as I have 
several users on the current system.  Running on a large network, we see

the automount map caching as a big problem right now.  I am hoping to 
find a way to fix it without too much upgrading, re-kicking of machines,

etc.

>anne> I already have autofs-4.1.3-9 installed and didn't see any
dependency
>anne> errors when I installed that.
>
>Well, there should be no added dependency requirements.  You _could_
try
>doing an rpm -i --force of the autofs package.
>  
>
# rpm -ivh autofs-4.1.3-13.i386.rpm
error: Failed dependencies:
        liblber-2.2.so.7 is needed by autofs-4.1.3-13
        libldap-2.2.so.7 is needed by autofs-4.1.3-13
# rpm -ivh autofs-4.1.3-13.i386.rpm --force
error: Failed dependencies:
        liblber-2.2.so.7 is needed by autofs-4.1.3-13
        libldap-2.2.so.7 is needed by autofs-4.1.3-13
# rpm -ivh autofs-4.1.3-13.i386.rpm --nodeps --force
Preparing...                ########################################### 
[100%]
   1:autofs                 ########################################### 
[100%]

Finally worked when I used the "--nodeps" flag.  Is this OK, though?

>anne> Is there information somewhere that I can go find about
installing
>anne> the kernel patch?
>
>Certainly, but let's figure out which kernel you want to build, first.
>
>-Jeff
>
>
>  
>

_______________________________________________
autofs mailing list
autofs@linux.kernel.org
http://linux.kernel.org/mailman/listinfo/autofs

Newbie Question

[Anne.Bourgeois]

I am pretty new to the list, and I have a very basic question.

How do I install the kernel patch so that I can install the autofs rpm?  
When I tried to just install the new autofs rpm, I got a dependency error:

        liblber-2.2.so.7 is needed by autofs-4.1.3-13
        libldap-2.2.so.7 is needed by autofs-4.1.3-13

I already have autofs-4.1.3-9 installed and didn't see any dependency 
errors when I installed that.

Is there information somewhere that I can go find about installing the 
kernel patch?

Thank you for any help.
Annie

Re: Newbie Question

[Jeff Moyer]

==> Regarding [autofs] Newbie Question; "Anne.Bourgeois" <anne.bourgeois@analog.com> adds:

anne> I am pretty new to the list, and I have a very basic question.  How
anne> do I install the kernel patch so that I can install the autofs rpm?

What distribution are you running?  Do you want to patch a kernel from that
distribution (recommended), or run a vanilla kernel from kernel.org?

anne> When I tried to just install the new autofs rpm, I got a dependency
anne> error:

anne>         liblber-2.2.so.7 is needed by autofs-4.1.3-13
anne> libldap-2.2.so.7 is needed by autofs-4.1.3-13

If you're running Fedora, I'd suggest upgrading your current system with
yum.

anne> I already have autofs-4.1.3-9 installed and didn't see any dependency
anne> errors when I installed that.

Well, there should be no added dependency requirements.  You _could_ try
doing an rpm -i --force of the autofs package.

anne> Is there information somewhere that I can go find about installing
anne> the kernel patch?

Certainly, but let's figure out which kernel you want to build, first.

-Jeff

Re: Newbie Question

[Anne.Bourgeois]

Jeff,

My apologies.  I should have included more info in my original post.  
Please see my answers below...

Jeff Moyer wrote:

>==> Regarding [autofs] Newbie Question; "Anne.Bourgeois" <anne.bourgeois@analog.com> adds:
>
>anne> I am pretty new to the list, and I have a very basic question.  How
>anne> do I install the kernel patch so that I can install the autofs rpm?
>
>What distribution are you running?  Do you want to patch a kernel from that
>distribution (recommended), or run a vanilla kernel from kernel.org?
>
>  
>
We are currently running RedHat 8.0 with the 2.4.20.20-8smp kernel.  We 
are looking to go to Enterprise 3 in the near future, but are dependent 
on some software vendors, so we are holding back at the moment.  We are 
seeing several autofs issues, which is the reason that I am trying these 
updates.

>anne> When I tried to just install the new autofs rpm, I got a dependency
>anne> error:
>
>anne>         liblber-2.2.so.7 is needed by autofs-4.1.3-13
>anne> libldap-2.2.so.7 is needed by autofs-4.1.3-13
>
>If you're running Fedora, I'd suggest upgrading your current system with
>yum.
>
>  
>
I'd prefer not to change the basic system that I'm running, as I have 
several users on the current system.  Running on a large network, we see 
the automount map caching as a big problem right now.  I am hoping to 
find a way to fix it without too much upgrading, re-kicking of machines, 
etc.

>anne> I already have autofs-4.1.3-9 installed and didn't see any dependency
>anne> errors when I installed that.
>
>Well, there should be no added dependency requirements.  You _could_ try
>doing an rpm -i --force of the autofs package.
>  
>
# rpm -ivh autofs-4.1.3-13.i386.rpm
error: Failed dependencies:
        liblber-2.2.so.7 is needed by autofs-4.1.3-13
        libldap-2.2.so.7 is needed by autofs-4.1.3-13
# rpm -ivh autofs-4.1.3-13.i386.rpm --force
error: Failed dependencies:
        liblber-2.2.so.7 is needed by autofs-4.1.3-13
        libldap-2.2.so.7 is needed by autofs-4.1.3-13
# rpm -ivh autofs-4.1.3-13.i386.rpm --nodeps --force
Preparing...                ########################################### 
[100%]
   1:autofs                 ########################################### 
[100%]

Finally worked when I used the "--nodeps" flag.  Is this OK, though?

>anne> Is there information somewhere that I can go find about installing
>anne> the kernel patch?
>
>Certainly, but let's figure out which kernel you want to build, first.
>
>-Jeff
>
>
>  
>

Re: Newbie Question

[Jeff Moyer]

==> Regarding Re: [autofs] Newbie Question; "Anne.Bourgeois" <anne.bourgeois@analog.com> adds:

anne.bourgeois> Jeff, My apologies.  I should have included more info in my
anne.bourgeois> original post.  Please see my answers below...

anne.bourgeois> Jeff Moyer wrote:

>> ==> Regarding [autofs] Newbie Question; "Anne.Bourgeois"
>> <anne.bourgeois@analog.com> adds:
>> 
anne> I am pretty new to the list, and I have a very basic question.  How
anne> do I install the kernel patch so that I can install the autofs rpm?
>> What distribution are you running?  Do you want to patch a kernel from
>> that distribution (recommended), or run a vanilla kernel from
>> kernel.org?

anne> We are currently running RedHat 8.0 with the 2.4.20.20-8smp
anne> kernel.  We are looking to go to Enterprise 3 in the near
anne> future, but are dependent on some software vendors, so we
anne> are holding back at the moment.  We are seeing several
anne> autofs issues, which is the reason that I am trying these
anne> updates.

Okay, get the source rpm for your kernel and install it.  Note that this is
not the kernel-source-x.y.z rpm, but rather the kernel-x.y.z.src.rpm.  It
will install to /usr/src/redhat/ by default.

Now, here's the tricky part.  I'm not sure if any of Ian's patch sets will
apply cleanly to your Red Hat 8 kernel.  :(  You can try the patch against
rh9, which can be found here:

     http://www.kernel.org/pub/linux/daemons/autofs/v4/autofs4-2.4.20-redhat9-20040508.patch

In addition to this patch, you will want to install Ian's mount expiry
patch for 2.4, which I've attached to this mail.

Okay, so the way you apply these patches is to put the actual patch files
into /usr/src/redhat/SOURCES.  Then, you want to update the
/usr/src/redhat/SPECS/kernel-2.4.spec file (I *think* that's what it's
called) to actually include/apply these patches.  There are two lines you
need to add for each patch.  They will look something like this (follow the
convention in the spec file)

Patch5900: autofs4-2.4.20-redhat9-20040508.patch

and later in the spec file:

%patch5900 -p1

To be nice, you should bump the release number in the spec file (found near
the top), and add a changelog entry (search for %changelog).  Once you've
done all of this, you are ready to build.  Use the following command to
build the binary rpm:

rpmbuild -bb /usr/src/redhat/SPECS/kernel-2.4.spec

If that errors, then the patches probably didn't apply cleanly.  You can
either take it upon yourself to fix up the broken hunks, or you can do the
following, more laborious process.

You can download a vanilla kernel from kernel.org that Ian has made a patch
for, and then apply the relevant patches to _that_ kernel.  Once you've
done that you can take the result, and generate a patch for your specific
kernel.

Here are the specific steps to follow to accomplish this.

Comment out the %patch lines you added to the spec file, and then issue
an 'rpmbuild -bp /usr/src/redhat/SPECS/kernel-2.4.spec'.  That should execute
the "prep" stage, rebuilding your tree w/o the patches.

unpack your linux sources into /usr/src/redhat/BUILD/kernel-x.y.z.  You
will already see a directory there named for the Red Hat kernel version.
So, something like:

cd /usr/src/redhat/BUILD/kernel*
tar xjf /tmp/linux-2.4.22.tar.bz2

Apply the patches to this kernel:

cd linux-2.4.22
patch -sp1 < /tmp/autofs4-2.4.22-20040508.patch
patch -sp1 < /tmp/autofs4-lookup.patch  (assuming this is what you've named
					 the attachment from this email)

Now, generate a diff:

cd ..
diff -urN linux-<redhatver> linux-2.4.22 > linux-autofs4.patch

Put the resulting patch into /usr/src/redhat/SOURCES, make sure you add
PatchXXXX and %patchXXXX -p 1 lines to the spec file which correspond to
this new patch, and go ahead and try the build again.

Phew!  Hopefully I haven't confused you.

anne> When I tried to just install the new autofs rpm, I got a dependency
anne> error:
>>
anne> liblber-2.2.so.7 is needed by autofs-4.1.3-13 libldap-2.2.so.7 is
anne> needed by autofs-4.1.3-13
>> If you're running Fedora, I'd suggest upgrading your current system with
>> yum.

anne> I'd prefer not to change the basic system that I'm running,
anne> as I have several users on the current system.  Running on
anne> a large network, we see the automount map caching as a big
anne> problem right now.  I am hoping to find a way to fix it
anne> without too much upgrading, re-kicking of machines, etc.

Okay, that makes perfect sense.

anne> I already have autofs-4.1.3-9 installed and didn't see any dependency
anne> errors when I installed that.
>> Well, there should be no added dependency requirements.  You _could_ try
>> doing an rpm -i --force of the autofs package.

[snip]
anne> Finally worked when I used the "--nodeps" flag.  Is this
anne> OK, though?

Well, it's probably okay.  It's definitely okay if you're not using ldap.
;)


Hope this helps!

-Jeff


 --- linux-2.4.20/fs/autofs4/root.c.dir_ops	2004-07-14 21:14:02.000000000 +0800
+++ linux-2.4.20/fs/autofs4/root.c	2004-07-14 21:15:58.000000000 +0800
@@ -33,7 +33,7 @@
 static int autofs4_dir_close(struct inode *inode, struct file *file);
 static int autofs4_dir_readdir(struct file * filp, void * dirent, filldir_t filldir);
 static int autofs4_root_readdir(struct file * filp, void * dirent, filldir_t filldir);
-static struct dentry *autofs4_root_lookup(struct inode *,struct dentry *);
+static struct dentry *autofs4_lookup(struct inode *,struct dentry *);
 static int autofs4_dcache_readdir(struct file *, void *, filldir_t);
 
 struct file_operations autofs4_root_operations = {
@@ -50,7 +50,7 @@
 };
 
 struct inode_operations autofs4_root_inode_operations = {
-	lookup:		autofs4_root_lookup,
+	lookup:		autofs4_lookup,
 	unlink:		autofs4_dir_unlink,
 	symlink:	autofs4_dir_symlink,
 	mkdir:		autofs4_dir_mkdir,
@@ -58,7 +58,7 @@
 };
 
 struct inode_operations autofs4_dir_inode_operations = {
-	lookup:		autofs4_dir_lookup,
+	lookup:		autofs4_lookup,
 	unlink:		autofs4_dir_unlink,
 	symlink:	autofs4_dir_symlink,
 	mkdir:		autofs4_dir_mkdir,
@@ -434,23 +434,8 @@
 	d_release:	autofs4_dentry_release,
 };
 
-/* Lookups in non-root dirs never find anything - if it's there, it's
-   already in the dcache */
-static struct dentry *autofs4_dir_lookup(struct inode *dir, struct dentry *dentry)
-{
-#if 0
-	DPRINTK(("autofs4_dir_lookup: ignoring lookup of %.*s/%.*s\n",
-		 dentry->d_parent->d_name.len, dentry->d_parent->d_name.name,
-		 dentry->d_name.len, dentry->d_name.name));
-#endif
-
-	dentry->d_fsdata = NULL;
-	d_add(dentry, NULL);
-	return NULL;
-}
-
 /* Lookups in the root directory */
-static struct dentry *autofs4_root_lookup(struct inode *dir, struct dentry *dentry)
+static struct dentry *autofs4_lookup(struct inode *dir, struct dentry *dentry)
 {
 	struct autofs_sb_info *sbi;
 	int oz_mode;

Re: Newbie Question

[Anne.Bourgeois]

>[snip]
>
>Well, it's probably okay.  It's definitely okay if you're not using ldap.
>;)
>
>
>Hope this helps!
>
>-Jeff
>
OK, I'm not using LDAP.  I will just go with install with the --nodeps 
flag & try it that way.  If I have problems, I'll try installing the 
kernel patches. 

Thank you for your help.
Annie

Re: Newbie Question

[Jeff Moyer]

==> Regarding Re: [autofs] Newbie Question; "Anne.Bourgeois" <anne.bourgeois@analog.com> adds:

>> [snip]
>> 
>> Well, it's probably okay.  It's definitely okay if you're not using
>> ldap.  ;)
>> 
>> 
>> Hope this helps!
>> 
>> -Jeff
>> 
anne> OK, I'm not using LDAP.  I will just go with install with the
anne> --nodeps flag & try it that way.  If I have problems, I'll try
anne> installing the kernel patches.

I thought you needed the map expiry changes?  If so, you need to install at
least the patch attached to my last email.  There are also known issues
with the autofs4 module that ships with the RH 8 kernel that are fixed with
Ian's patch sets.  If you run into further problems, we will likely ask you
to update your kernel before we help out.

-Jeff

Re: Newbie Question

[Ian Kent]

On Thu, 12 Aug 2004, Jeff Moyer wrote:

> ==> Regarding Re: [autofs] Newbie Question; "Anne.Bourgeois" <anne.bourgeois@analog.com> adds:
> 
> >> [snip]
> >> 
> >> Well, it's probably okay.  It's definitely okay if you're not using
> >> ldap.  ;)
> >> 
> >> 
> >> Hope this helps!
> >> 
> >> -Jeff
> >> 
> anne> OK, I'm not using LDAP.  I will just go with install with the
> anne> --nodeps flag & try it that way.  If I have problems, I'll try
> anne> installing the kernel patches.
> 
> I thought you needed the map expiry changes?  If so, you need to install at
> least the patch attached to my last email.  There are also known issues
> with the autofs4 module that ships with the RH 8 kernel that are fixed with
> Ian's patch sets.  If you run into further problems, we will likely ask you
> to update your kernel before we help out.

Yes. Some more info. on the problems you are having would be appreciated 
please.

Ian

Re: Newbie Question

[Ian Kent]

On Thu, 12 Aug 2004, Anne.Bourgeois wrote:

> 
> >[snip]
> >
> >Well, it's probably okay.  It's definitely okay if you're not using ldap.
> >;)
> >
> >
> >Hope this helps!
> >
> >-Jeff
> >
> OK, I'm not using LDAP.  I will just go with install with the --nodeps 
> flag & try it that way.  If I have problems, I'll try installing the 
> kernel patches. 

This is a bit of a worry to me as this problem has been solved before.

However, if your're not using LDAP installing with the --nodeps shouldn't 
cause any problems.

Ian

Re: Newbie Question

[Ian Kent]

On Thu, 12 Aug 2004, Jeff Moyer wrote:

> 
> Okay, get the source rpm for your kernel and install it.  Note that this is
> not the kernel-source-x.y.z rpm, but rather the kernel-x.y.z.src.rpm.  It
> will install to /usr/src/redhat/ by default.
> 
> Now, here's the tricky part.  I'm not sure if any of Ian's patch sets will
> apply cleanly to your Red Hat 8 kernel.  :(  You can try the patch against
> rh9, which can be found here:
> 
>      http://www.kernel.org/pub/linux/daemons/autofs/v4/autofs4-2.4.20-redhat9-20040508.patch

This should apply over RH kernel source.

So, no need to re-build the rpms, just install the kernel-source rpm,
apply the above patch and build a custom kernel as normal.

Let me know if the patch does not apply.

> 
> In addition to this patch, you will want to install Ian's mount expiry
> patch for 2.4, which I've attached to this mail.

Will be needed if you use Jeffs testing rpms. This work is in progress so 
don't expect much. It should be largely finished soon.

Ian

Newbie Question

[mafioso1823]

I am trying to use this piece of code that i found in my rc.firewall script
but it doesn't seem to want to take it can anyone tell me why or how i can
get this to work?

#The Mangle portion of the ruleset. Here is where unwanted packet types get
dropped.
#This helps in making port scans against your server a bit more time
consuming and difficult, but not impossible.
*mangle
:PREROUTING ACCEPT [444:43563]
:INPUT ACCEPT [444:43563]
:FORWARD ACCEPT [0:0]
:OUTPUT ACCEPT [402:144198]
:POSTROUTING ACCEPT [402:144198]
-A PREROUTING -p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG
FIN,PSH,URG -j DROP
-A PREROUTING -p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG NONE -j DROP
-A PREROUTING -p tcp -m tcp --tcp-flags SYN,RST SYN,RST -j DROP
-A PREROUTING -p tcp -m tcp --tcp-flags FIN,SYN FIN,SYN -j DROP
-A PREROUTING -p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG
FIN,PSH,URG -j DROP
-A PREROUTING -p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG NONE -j DROP
-A PREROUTING -p tcp -m tcp --tcp-flags SYN,RST SYN,RST -j DROP
-A PREROUTING -p tcp -m tcp --tcp-flags FIN,SYN FIN,SYN -j DROP
-A PREROUTING -p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG
FIN,PSH,URG -j DROP
-A PREROUTING -p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG NONE -j DROP
-A PREROUTING -p tcp -m tcp --tcp-flags SYN,RST SYN,RST -j DROP
-A PREROUTING -p tcp -m tcp --tcp-flags FIN,SYN FIN,SYN -j DROP
-A PREROUTING -p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG
FIN,PSH,URG -j DROP
-A PREROUTING -p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG NONE -j DROP
-A PREROUTING -p tcp -m tcp --tcp-flags SYN,RST SYN,RST -j DROP
-A PREROUTING -p tcp -m tcp --tcp-flags FIN,SYN FIN,SYN -j DROP
COMMIT

Re: Newbie Question

[John A. Sullivan III]

On Tue, 2004-06-08 at 00:16, mafioso1823@contourmediagroup.com wrote:
> I am trying to use this piece of code that i found in my rc.firewall script
> but it doesn't seem to want to take it can anyone tell me why or how i can
> get this to work?
> 
> #The Mangle portion of the ruleset. Here is where unwanted packet types get
> dropped.
> #This helps in making port scans against your server a bit more time
> consuming and difficult, but not impossible.
> *mangle
> :PREROUTING ACCEPT [444:43563]
> :INPUT ACCEPT [444:43563]
> :FORWARD ACCEPT [0:0]
> :OUTPUT ACCEPT [402:144198]
> :POSTROUTING ACCEPT [402:144198]
> -A PREROUTING -p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG
> FIN,PSH,URG -j DROP
> -A PREROUTING -p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG NONE -j DROP
> -A PREROUTING -p tcp -m tcp --tcp-flags SYN,RST SYN,RST -j DROP
> -A PREROUTING -p tcp -m tcp --tcp-flags FIN,SYN FIN,SYN -j DROP
> -A PREROUTING -p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG
> FIN,PSH,URG -j DROP
> -A PREROUTING -p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG NONE -j DROP
> -A PREROUTING -p tcp -m tcp --tcp-flags SYN,RST SYN,RST -j DROP
> -A PREROUTING -p tcp -m tcp --tcp-flags FIN,SYN FIN,SYN -j DROP
> -A PREROUTING -p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG
> FIN,PSH,URG -j DROP
> -A PREROUTING -p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG NONE -j DROP
> -A PREROUTING -p tcp -m tcp --tcp-flags SYN,RST SYN,RST -j DROP
> -A PREROUTING -p tcp -m tcp --tcp-flags FIN,SYN FIN,SYN -j DROP
> -A PREROUTING -p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG
> FIN,PSH,URG -j DROP
> -A PREROUTING -p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG NONE -j DROP
> -A PREROUTING -p tcp -m tcp --tcp-flags SYN,RST SYN,RST -j DROP
> -A PREROUTING -p tcp -m tcp --tcp-flags FIN,SYN FIN,SYN -j DROP
> COMMIT
Hmm . . . loaded fine for me -- I assume the word wrapping on the long
lines was caused by your e-mail editor does not exist in your file.
What happens when you try to load it?
-- 
John A. Sullivan III
Chief Technology Officer
Nexus Management
+1 207-985-7880
john.sullivan@nexusmgmt.com
---
If you are interested in helping to develop a GPL enterprise class
VPN/Firewall/Security device management console, please visit
http://iscs.sourceforge.net 

newbie question

[M. Ahmad Ijaz]

[-- Attachment #1: Type: text/plain, Size: 1216 bytes --]

hi,

I just wanna know few things , i have installed red hat 9, iptable is installed.

Now the thing is, i didnt know at first that i have to load the modules, i was getting the message

iptables: No chain/target/match by that name

so after couple of searches i did find some help and i manage to apply few commands i.e.

modprobe ip_tables
modprobe ip_conntrack
modprobe iptable_nat
modprobe ip_conntrack_ftp
modprobe ip_nat_ftp

iptables -P INPUT ACCEPT
iptables -P OUTPUT ACCEPT
iptables -P FORWARD DROP
iptables -A INPUT -p icmp --icmp-type 8 -j DROP 


all the above commands are accepted at command prompt, but when i try to use this command

iptables -A PREROUTING -s xxx.xxx.xxx.xxx/yyy.yyy.yyy.yyy -p tcp -m tcp --dport 80 -j REDIRECT --to-ports 8080 where xxx is any IP and yyy is the subnet mask, it returns me the same message i.e. 
iptables: No chain/target/match by that name

So it also give the same message with POSTROUTING.


also i dont wana load the modules and the commands each time the system starts, so when i type the commands i used iptables-save command to save tat, also is there ne possibility where i can store the command and execute when system startsup

[-- Attachment #2: Type: text/html, Size: 1962 bytes --]

Re: newbie question

[Antony Stone]

On Thursday 08 April 2004 12:57 pm, M. Ahmad Ijaz wrote:

> when i try to use this command
>
> iptables -A PREROUTING -s xxx.xxx.xxx.xxx/yyy.yyy.yyy.yyy -p tcp -m tcp
> --dport 80 -j REDIRECT --to-ports 8080
>
> where xxx is any IP and yyy is the subnet mask, it returns me the same
> message i.e. iptables: No chain/target/match by that name
>
> So it also give the same message with POSTROUTING.

You need a "-t nat" in there, to tell it the rule is going into the nat table 
of the PREROUTING chain, not the filter table (which is the default, but does 
not exist in PREROUTING).

Regards,

Antony.

-- 
People who use Microsoft software should be certified.

                                                     Please reply to the list;
                                                           please don't CC me.

Re: newbie question

[M. Ahmad Ijaz]

do i know where to put that "-t nat"
 iptables -A PREROUTING -s xxx.xxx.xxx.xxx/yyy.yyy.yyy.yyy -p tcp -m
tcp --dport 80 -j REDIRECT --to-ports 8080

----- Original Message ----- 
From: "Antony Stone" <Antony@Soft-Solutions.co.uk>
To: <netfilter@lists.netfilter.org>
Sent: Thursday, April 08, 2004 5:02 PM
Subject: Re: newbie question


> On Thursday 08 April 2004 12:57 pm, M. Ahmad Ijaz wrote:
>
> > when i try to use this command
> >
> > iptables -A PREROUTING -s xxx.xxx.xxx.xxx/yyy.yyy.yyy.yyy -p tcp -m tcp
> > --dport 80 -j REDIRECT --to-ports 8080
> >
> > where xxx is any IP and yyy is the subnet mask, it returns me the same
> > message i.e. iptables: No chain/target/match by that name
> >
> > So it also give the same message with POSTROUTING.
>
> You need a "-t nat" in there, to tell it the rule is going into the nat
table
> of the PREROUTING chain, not the filter table (which is the default, but
does
> not exist in PREROUTING).
>
> Regards,
>
> Antony.
>
> -- 
> People who use Microsoft software should be certified.
>
>                                                      Please reply to the
list;
>                                                            please don't CC
me.
>

Re: newbie question

[Antony Stone]

On Thursday 08 April 2004 1:32 pm, M. Ahmad Ijaz wrote:

> do i know where to put that "-t nat"
>  iptables -A PREROUTING -s xxx.xxx.xxx.xxx/yyy.yyy.yyy.yyy -p tcp -m
> tcp --dport 80 -j REDIRECT --to-ports 8080

I don't know - do you?   I'll assume that you don't, since you've asked us...

My preference is to place it after the chain name:

iptables -A PREROUTING -t nat -s xxx.xxx.xxx.xxx/yyy.yyy.yyy.yyy -p tcp -m
tcp --dport 80 -j REDIRECT --to-ports 8080

However other people sometimes place it before.

Regards,

Antony.

-- 
If you want to be happy for an hour, get drunk.
If you want to be happy for a year, get married.
If you want to be happy for a lifetime, get a garden.

                                                     Please reply to the list;
                                                           please don't CC me.

Re: newbie question

[ro0ot]

iptables -t nat -A PREROUTING -s xxx.xxx.xxx.xxx/yyy.yyy.yyy.yyy -p tcp -m tcp --dport 80 -j REDIRECT --to-ports 8080


M. Ahmad Ijaz wrote:

>do i know where to put that "-t nat"
> iptables -A PREROUTING -s xxx.xxx.xxx.xxx/yyy.yyy.yyy.yyy -p tcp -m
>tcp --dport 80 -j REDIRECT --to-ports 8080
>
>----- Original Message ----- 
>From: "Antony Stone" <Antony@Soft-Solutions.co.uk>
>To: <netfilter@lists.netfilter.org>
>Sent: Thursday, April 08, 2004 5:02 PM
>Subject: Re: newbie question
>
>
>  
>
>>On Thursday 08 April 2004 12:57 pm, M. Ahmad Ijaz wrote:
>>
>>    
>>
>>>when i try to use this command
>>>
>>>iptables -A PREROUTING -s xxx.xxx.xxx.xxx/yyy.yyy.yyy.yyy -p tcp -m tcp
>>>--dport 80 -j REDIRECT --to-ports 8080
>>>
>>>where xxx is any IP and yyy is the subnet mask, it returns me the same
>>>message i.e. iptables: No chain/target/match by that name
>>>
>>>So it also give the same message with POSTROUTING.
>>>      
>>>
>>You need a "-t nat" in there, to tell it the rule is going into the nat
>>    
>>
>table
>  
>
>>of the PREROUTING chain, not the filter table (which is the default, but
>>    
>>
>does
>  
>
>>not exist in PREROUTING).
>>
>>Regards,
>>
>>Antony.
>>
>>-- 
>>People who use Microsoft software should be certified.
>>
>>                                                     Please reply to the
>>    
>>
>list;
>  
>
>>                                                           please don't CC
>>    
>>
>me.
>  
>
>
>
>
>  
>

Re: newbie question

[Jeffrey Laramie]

Hey Antony,

I just wanted to take a minute to say 'Thanks' for all the time you put in 
answering questions on this list. You probably help 10-15 people a day and 
while many thank you for your help, I want to say thanks for those of us who 
just listen in. I know that at least once a week I read one of your postings 
and think 'hmmm, I didn't know that'. Those postings get printed and added to 
my netfilter reference folder. You are a valuable asset to the list and I 
appreciate your effort. Thanks from all of us.

Jeff

Re: newbie question

[Antony Stone]

On Thursday 08 April 2004 1:32 pm, Jeffrey Laramie wrote:

> Hey Antony,
>
> I just wanted to take a minute to say 'Thanks' for all the time you put in
> answering questions on this list. You probably help 10-15 people a day and
> while many thank you for your help, I want to say thanks for those of us
> who just listen in.

Hey, thanks, it's nice to remember that there's a lot more people on this list 
than just those who post (questions or answers).

> I know that at least once a week I read one of your
> postings and think 'hmmm, I didn't know that'.

Good - in that case I'm doing a useful job :)   If I were posting replies 
which people thought "yes, I knew that - why didn't the questioner just look 
it up in a tutorial somewhere", then I'd probably just start saying "RTFM" or 
posting hyperlinks instead of explaining my answers.

> Those postings get printed and added to my netfilter reference folder. You
> are a valuable asset to the list and I appreciate your effort. Thanks from
> all of us.

Thank you.   I regard netfilter as a great system, and it's just my way of 
putting something back into Open Source.

Regards,

Antony.

-- 
G- GIT/E d- s+:--(-) a+ C++++$ UL++++$ P+(---)>++ L+++(++++)$ !E W(-) N(-) o? 
w-- O !M V+++(--) !PS !PE Y+ PGP+> t- tv@ b+++ DI++ D--- e++>+++ h++ r@? 5? 
!X- !R K--?

Re: newbie question

[Frank Gruellich]

* M. Ahmad Ijaz <ahmad@netlogicbroadband.com>  8. Apr 04:
> hi,

Hello,

> modprobe ip_tables
> modprobe ip_conntrack
> modprobe iptable_nat
> modprobe ip_conntrack_ftp
> modprobe ip_nat_ftp
> 
> iptables -P INPUT ACCEPT
> iptables -P OUTPUT ACCEPT
> iptables -P FORWARD DROP
> iptables -A INPUT -p icmp --icmp-type 8 -j DROP 
> 
> iptables -A PREROUTING -s xxx.xxx.xxx.xxx/yyy.yyy.yyy.yyy -p tcp -m tcp --dport 80 -j REDIRECT --to-ports 8080
> 
> where xxx is any IP and yyy is the subnet mask, it returns me the same
> message i.e.  iptables: No chain/target/match by that name

Try

# iptables -t nat -A PREROUTING ...

Rules go into the filter table by default, if not specified otherwise,
but filter has not {PRE,POST}ROUTING.

> also i dont wana load the modules and the commands each time the
> system starts, so when i type the commands i used iptables-save
> command to save tat, also is there ne possibility where i can store
> the command and execute when system startsup

As a script somewhere in /etc/init.d/ and a symlink in
/etc/rc.$defaultrunlevel/.

HTH,
 regards, Frank.
-- 
Sigmentation fault

Re: newbie question

[M. Ahmad Ijaz]

thanks for ur reply n the 1st portion is solved, its now working

I typed all the commands on root and afterwards used

iptables-save

command to commit, but when i restarted the system and used this command

iptables -L

it shows no rules. So how to accomplish this. Also quite frankly i didnt get
it

> As a script somewhere in /etc/init.d/ and a symlink in
> /etc/rc.$defaultrunlevel/.


can you please tell me how to do it , as i m new to it.

Regards.
Aejaz



----- Original Message ----- 
From: "Frank Gruellich" <frank@home.manuelm.org>
To: <netfilter@lists.netfilter.org>
Sent: Thursday, April 08, 2004 5:09 PM
Subject: Re: newbie question


> * M. Ahmad Ijaz <ahmad@netlogicbroadband.com>  8. Apr 04:
> > hi,
>
> Hello,
>
> > modprobe ip_tables
> > modprobe ip_conntrack
> > modprobe iptable_nat
> > modprobe ip_conntrack_ftp
> > modprobe ip_nat_ftp
> >
> > iptables -P INPUT ACCEPT
> > iptables -P OUTPUT ACCEPT
> > iptables -P FORWARD DROP
> > iptables -A INPUT -p icmp --icmp-type 8 -j DROP
> >
> > iptables -A PREROUTING -s xxx.xxx.xxx.xxx/yyy.yyy.yyy.yyy -p tcp -m
tcp --dport 80 -j REDIRECT --to-ports 8080
> >
> > where xxx is any IP and yyy is the subnet mask, it returns me the same
> > message i.e.  iptables: No chain/target/match by that name
>
> Try
>
> # iptables -t nat -A PREROUTING ...
>
> Rules go into the filter table by default, if not specified otherwise,
> but filter has not {PRE,POST}ROUTING.
>
> > also i dont wana load the modules and the commands each time the
> > system starts, so when i type the commands i used iptables-save
> > command to save tat, also is there ne possibility where i can store
> > the command and execute when system startsup
>
> As a script somewhere in /etc/init.d/ and a symlink in
> /etc/rc.$defaultrunlevel/.
>
> HTH,
>  regards, Frank.
> -- 
> Sigmentation fault
>

Re: newbie question

[Alexis]

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you must specify the table.

with -t modif
  ----- Original Message ----- 
  From: M. Ahmad Ijaz 
  To: netfilter@lists.netfilter.org 
  Sent: Thursday, April 08, 2004 8:57 AM
  Subject: newbie question


  hi,

  I just wanna know few things , i have installed red hat 9, iptable is installed.

  Now the thing is, i didnt know at first that i have to load the modules, i was getting the message

  iptables: No chain/target/match by that name

  so after couple of searches i did find some help and i manage to apply few commands i.e.

  modprobe ip_tables
  modprobe ip_conntrack
  modprobe iptable_nat
  modprobe ip_conntrack_ftp
  modprobe ip_nat_ftp

  iptables -P INPUT ACCEPT
  iptables -P OUTPUT ACCEPT
  iptables -P FORWARD DROP
  iptables -A INPUT -p icmp --icmp-type 8 -j DROP 


  all the above commands are accepted at command prompt, but when i try to use this command

  iptables -A PREROUTING -s xxx.xxx.xxx.xxx/yyy.yyy.yyy.yyy -p tcp -m tcp --dport 80 -j REDIRECT --to-ports 8080 where xxx is any IP and yyy is the subnet mask, it returns me the same message i.e. 
  iptables: No chain/target/match by that name

  So it also give the same message with POSTROUTING.


  also i dont wana load the modules and the commands each time the system starts, so when i type the commands i used iptables-save command to save tat, also is there ne possibility where i can store the command and execute when system startsup

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Re: Newbie question

[Arvanitis Kostas]

On Friday 10 October 2003 17:29, Fabio Ribeiro wrote:
> Dear All,
>
> 	What does mean this kind of error "No Such Object available on this
> agent"
> 	Using "snmptranslate -IR memBuffer" I got a the right answer ie:
> .1.3.6.1.4.1.2021.4.14
>
> 	Sample:
> 	$ snmpget -c localhost -v 2c 127.0.0.1 .1.3.6.1.4.1.2021.4.14
> 	$ enterprises.ucdavis.memory.memBuffer = No Such Object available on
> this agent
>
> 	In fact I'm not being able to get informations on
> .1.3.6.1.4.1.2021.4.x (ie: memory)
>

This means you have not enabled the appropriate MIB module in the agent 
before compiling the agent. Running
# ./configure --help
from the top level directory in the agent's source code distribution 
will show you how to include specific modules, as well as which modules 
are available, and a lot of other possible options.

To the list: Isn't there a FAQ about this? There should be one, listing 
the modules included in the agent as compiled by default.

-- 
A: No. See http://www.netmeister.org/news/learn2quote.html
Q: Should I include quotations after my reply ?

newbie question.

[chentschel2]

Please , 
     I\'m trying to write a new module and i need some help ;). 
     What i need to do is a module for dnat UDP packets but always to the same IP if they came from a determinated IP.. i don\'t know if i\'m clear.. but the idea is to use it for UDP RAS msgs in an h323 session... haveing a proxy that balance all those msgs to some RAS servers.
     well i thougth to write an nat-helper module.. but i don;t know if it\'s right.. may be the right thing is to write a new target module?.. 
    Please can someone give me a hand with this? 

Thanks a lot in advance. 
Christian.

[ANNOUNCE] ELKS-0.1.3-pre1 released

[Miguel Bolanos]

Greetings to all.

I have the proud to announce that ELKS-0.1.3-pre1 have been released.

After a long period of inactivity, activity has resumed on the ELKS
kernel. Various changes relating to debugging ELKS kernel panics have
been integrated into this release, along with various tweaks to the
spelling of messages displayed by the kernel

To get the latest ELKS source via CVS use:

cvs -d:pserver:anonymous@cvs.sourceforge.net:/cvsroot/elks login
 
cvs -z3 -d:pserver:anonymous@cvs.sourceforge.net:/cvsroot/elks co elks

Miguel

Newbie Question

[Sérgio Duarte e Silva]

Hi all,

I would like to ask you if there is any implementation already running on a
80186 enviroment. If there is any FAQ or related material please if possible
send me a link. Thank you very much indeed.

Sérgio Duarte e Silva

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Re: Newbie Question

[Alan Cox]

On Iau, 2003-07-17 at 02:43, Sérgio Duarte e Silva wrote:
> Hi all,
> 
> I would like to ask you if there is any implementation already running on a
> 80186 enviroment. If there is any FAQ or related material please if possible
> send me a link. Thank you very much indeed.

It should boot on an 80186, 286, 386... PC just fine. For a non PC
system you'll need to do somethign about drivers

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Re: Newbie Question

[Sérgio Duarte e Silva]

Sorry, I forgot.. I am trying an embbeded system ;-). So, that's why I
asked, I am looking for something like ECOS redboot, if there is nothing I
will try to develop, just asking before start.
Thanks a lot!!

----- Original Message -----
From: "Alan Cox" <alan@lxorguk.ukuu.org.uk>
To: "Sérgio Duarte e Silva" <sduartes@mandic.com.br>
Cc: <linux-8086@vger.kernel.org>
Sent: Thursday, July 17, 2003 8:02 AM
Subject: Re: Newbie Question


On Iau, 2003-07-17 at 02:43, Sérgio Duarte e Silva wrote:
> Hi all,
>
> I would like to ask you if there is any implementation already running on
a
> 80186 enviroment. If there is any FAQ or related material please if
possible
> send me a link. Thank you very much indeed.

It should boot on an 80186, 286, 386... PC just fine. For a non PC
system you'll need to do somethign about drivers


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Re: Newbie Question

[Paul Nasrat]

On Thu, Jul 17, 2003 at 08:12:13AM -0300, S??rgio Duarte e Silva wrote:
> Sorry, I forgot.. I am trying an embbeded system ;-). So, that's why I
> asked, I am looking for something like ECOS redboot, if there is nothing I
> will try to develop, just asking before start.

I know that others were looking at various boards:

http://www.alfonsomartone.itb.it/rrbyzo.html

I'm not sure how far it got.  Also it might be worth looking through how
the SIBO (Psion 3 series) bootloader works (arch/i86/sibo) to look at a
non PC based startup.

Maybe you could post details of the board, etc.

Paul

Re: Newbie Question

[Dan Olson]

> It should boot on an 80186, 286, 386... PC just fine. For a non PC
> system you'll need to do somethign about drivers

The only 186/188 system I'm familar with is the Tandy 2000 and it's not an
IBM PC compatible...so if by "PC" you mean and IBM clone, I'm not sure if
the 80186/88 will run ELKS as-is.  I raised this question a while back and
the answer I got was that those CPUs have integrated hardware that was
externally connected on the PC, and that hardware isn't quite connected
the same on the two.  I think it's definetly possible to get ELKS running
on the 186, but does it need to be conpiled for such?  Actually, if
someone has a schematic for a simple 186 based homebrew, I'd like to see
it.  Does ELKS support having the console on a serial terminal yet?

	Dan

Re: Newbie Question

[Alan Cox]

On Iau, 2003-07-17 at 15:55, Dan Olson wrote:
> the 80186/88 will run ELKS as-is.  I raised this question a while back and
> the answer I got was that those CPUs have integrated hardware that was
> externally connected on the PC, 

80186EC does, 80186 is near enough an 8086 drop in replacement with some
extra instructions - just nothing worth the effort so only a few people
used them in PC's.

> and that hardware isn't quite connected
> the same on the two.  I think it's definetly possible to get ELKS running
> on the 186, but does it need to be conpiled for such?  Actually, if
> someone has a schematic for a simple 186 based homebrew, I'd like to see
> it.  Does ELKS support having the console on a serial terminal yet?

Just replace the vt52 console driver with the serial driver and it'll be
happy

Re: Newbie Question

[Dan Olson]

> 80186EC does, 80186 is near enough an 8086 drop in replacement with some
> extra instructions - just nothing worth the effort so only a few people
> used them in PC's.

Huh, so would ELKS be happy running on a 186 with just the pre-compiled
kernal image?  I had thought about building a "PC clone" of sorts with a
186 but gave up on the idea thinking that it would be too incompatible and
wouldn't run anything but custom software.

> Just replace the vt52 console driver with the serial driver and it'll be
> happy

Cool, it'd be easier to wire in a UART than a video chip I think :)

	Dan

Re: Newbie Question

[Alan Cox]

On Iau, 2003-07-17 at 16:24, Dan Olson wrote:
> > 80186EC does, 80186 is near enough an 8086 drop in replacement with some
> > extra instructions - just nothing worth the effort so only a few people
> > used them in PC's.
> 
> Huh, so would ELKS be happy running on a 186 with just the pre-compiled
> kernal image? 

Given some kind of PC BIOS or BIOS subset it should yes

Re: Newbie Question

[Sérgio Duarte e Silva]

Hi!

I do have a simple 186 schematic, I will add some RAm, at maximum 1 MB then
I can send it to you or anyone else who wants this. In our enterprise we use
the a Acore TERN hardware (www.tern.com), but this is a 80188, it is not so
interesting to me as the 80186. May be its the right hardware for you.

Sérgio

----- Original Message -----
From: "Dan Olson" <dano@agora.rdrop.com>
To: <linux-8086@vger.kernel.org>
Sent: Thursday, July 17, 2003 11:55 AM
Subject: Re: Newbie Question


> > It should boot on an 80186, 286, 386... PC just fine. For a non PC
> > system you'll need to do somethign about drivers
>
> The only 186/188 system I'm familar with is the Tandy 2000 and it's not an
> IBM PC compatible...so if by "PC" you mean and IBM clone, I'm not sure if
> the 80186/88 will run ELKS as-is.  I raised this question a while back and
> the answer I got was that those CPUs have integrated hardware that was
> externally connected on the PC, and that hardware isn't quite connected
> the same on the two.  I think it's definetly possible to get ELKS running
> on the 186, but does it need to be conpiled for such?  Actually, if
> someone has a schematic for a simple 186 based homebrew, I'd like to see
> it.  Does ELKS support having the console on a serial terminal yet?
>
> Dan
>
> -
> To unsubscribe from this list: send the line "unsubscribe linux-8086" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
>

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Newbie Question...

[Carlos Cajina]

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Hi, I'm Carlos from Nicaragua but currently living in Mexico... I just signed up to this list and already have one question in mind: Is it possible to specify a particular IP address range when creating filtering rules? If so... where can I find the info that talks about it?

Best regards!!!!

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Re: Newbie Question...

[Joel Newkirk]

On Wednesday 26 March 2003 12:37 pm, Carlos Cajina wrote:
> Hi, I'm Carlos from Nicaragua but currently living in Mexico... I just
> signed up to this list and already have one question in mind: Is it
> possible to specify a particular IP address range when creating
> filtering rules? If so... where can I find the info that talks about
> it?

Yes.  For example, to match a single source IP use "-s a.b.c.d", while to 
match a range of IPs you have to be able to match with a mask, like "-s 
a.b.c.d/24" or "-s a.b.c.d/255.255.255.0" to match a.b.c. and anything 
for d.  Destinations are matched with "-d a.b.c.d/m" the same way.  

If you need to match an 'odd' range of IPs, that cannot be fitted to a 
single ip/mask test, then it is usually necessary to use multiple rules.  
IE, if you need to match 192.168.0.4-192.168.0.6, then you can match .4 
and .5 with 192.168.0.4/31, but .6 will need a separate rule.  (unless 
you don't mind catching .7 as well, in which case a mask for 30 bits 
instead of 31 would work for all 4 IPs)

http://iptables-tutorial.frozentux.net is the best tutorial around for 
iptables.

j

> Best regards!!!!

newbie question

[Scott Melnyk]

Hello, I hope this is not to simple to post. I have not quite got
IPTABLEs use down.

I am looking at setting up local firewalls on  a cluster of machines
(almost 100 linux boxes running RH 7.3 and 8.0).  The login nodes for
the cluster have extensive hardware based firewalling rules.  

On the rest of the cluster I would like to set IPTABLEs to accept
everything within the subnet and drop the anything from and outside
address.

My thought for setting the rules on each machine is by pushing out and
running a bash script.
Is it possible to simply set up a firewall with something as simple as:


#!/bin/bash
#

service iptables stop

iptables -F

iptables -A INPUT -m limit -j LOG
iptables -A OUTPUT -m limit -j LOG


iptables -A INPUT -s 130.xxx.xxx.128/25  ACCEPT
#rule here to drop all non 130.xxx.xxx.128/25

iptables -P FORWARD DROP
iptables -P INPUT DROP

service iptables save


We have a subnet of 130.xxx.xxx.128/255.255.255.128  
How can I define a mandatory drop of everything not in
130.xxx.xxx.128/255.255.255.128? 

Finally what risks am I taking by doing this?  Other than if someone
hacks into one of the login nodes, I realize this would then give them
access to the rest of the cluster.

All thoughts, advice and suggestions very welcome.  Thank you in
advance.

Sincerely,
Scott Melnyk

Re: newbie question

[Joel Newkirk]

On Monday 24 March 2003 10:54 am, Scott Melnyk wrote:
> Hello, I hope this is not to simple to post. I have not quite got
> IPTABLEs use down.
>
> I am looking at setting up local firewalls on  a cluster of machines
> (almost 100 linux boxes running RH 7.3 and 8.0).  The login nodes for
> the cluster have extensive hardware based firewalling rules.
>
> On the rest of the cluster I would like to set IPTABLEs to accept
> everything within the subnet and drop the anything from and outside
> address.
>
> My thought for setting the rules on each machine is by pushing out and
> running a bash script.
> Is it possible to simply set up a firewall with something as simple
> as:
>
>
> #!/bin/bash
> #
>
> service iptables stop
>
> iptables -F
>
> iptables -A INPUT -m limit -j LOG
> iptables -A OUTPUT -m limit -j LOG

Are you sure this is what you want?  It will log 5 entries the first 
hour, then 3/hour after that.  (presuming you have at least that many to 
log)

> iptables -A INPUT -s 130.xxx.xxx.128/25  ACCEPT
> #rule here to drop all non 130.xxx.xxx.128/25

Two things here - first, the DROP policy below will drop anything not 
already accepted, so you don't need and explicit DROP.  Second, you can 
specify this DROP (if you really want it) with
iptables -A INPUT -s ! 130.x.x.128/25 -j DROP

> iptables -P FORWARD DROP
> iptables -P INPUT DROP
>
> service iptables save
>
>
> We have a subnet of 130.xxx.xxx.128/255.255.255.128
> How can I define a mandatory drop of everything not in
> 130.xxx.xxx.128/255.255.255.128?

Just the DROP policy is all that is needed, so long as you specify the 
source IP in ACCEPT rules.

> Finally what risks am I taking by doing this?  Other than if someone
> hacks into one of the login nodes, I realize this would then give them
> access to the rest of the cluster.

The only risk I see is of someone spoofing one of your IPs.  If all 
communications will take place with specific ports or protocols, you can 
tighten the ACCEPT rule to only allow that in.  But as you have it, the 
only thing that these boxes would accept communications from would be 
their own subnet, and if you doun't have unnecessary services running 
you shouldn't have much to worry about.

j

newbie question

[ayachi gherissi]

[-- Attachment #1: Type: text/plain, Size: 556 bytes --]


hi  i'm newbie in framebuffer driver development

i have a graphics card siliconmotion 721 (Lynx3DM) i want to make the framebuffer driver i get the spec of the card

i take cyber2000fb driver and i start modifying it


i activate pci burst 
    enable linear memory
    get memory size
    calculate vclck
    calculate mclck  

i know that each hardware is specfic
my question is
what other general steps related to hardware
must i done to get things work

thank's


 



---------------------------------
Post your free ad now! Yahoo! Canada Personals

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Re: newbie question

[Antonino Daplas]

On Mon, 2003-03-10 at 01:21, ayachi gherissi wrote:
> 
> hi  i'm newbie in framebuffer driver development
> 
> i have a graphics card siliconmotion 721 (Lynx3DM) i want to make the framebuffer driver i get the spec of the card
> 
> i take cyber2000fb driver and i start modifying it
> 
> 
> i activate pci burst 
>     enable linear memory
>     get memory size
>     calculate vclck
>     calculate mclck  
> 
> i know that each hardware is specfic
> my question is
> what other general steps related to hardware
> must i done to get things work
> 

You also need to modify the registers that determines the video mode
(ie, 1024x768 at 85 Hz), the type of colorspace (RGB, 8, 16, 24, 32
bit/pseudocolor, truecolor, directcolor etc), and the hardware color
look-up table (if using pseudocolor, directcolor).

Tony




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Re: Newbie Question

[Dragan Stancevic]

On Thursday 27 February 2003 15:26, Rudolf Marek wrote:
> Ah dragan you were faster....
> Regards

:-))))))

-- 
Peace can only come as a natural consequence
of universal enlightenment. -Dr. Nikola Tesla

Newbie Question

[dAvId KeDrOsKy]

The following program gives me a seg fault.  But I don't understand why.

1.	mov	ebx, dword 1234
2.	mov	ax, [ebx]

To me the code would mean 1) move the integer 1234 into ebx and then 2) move 
the value of ebx into ax.  But of course my reasoning is incorrect.

Feedback would be great.

Dave

Re: Newbie Question

[Dragan Stancevic]

On Thursday 27 February 2003 14:57, dAvId KeDrOsKy wrote:
> The following program gives me a seg fault.  But I don't understand why.
>
> 1.	mov	ebx, dword 1234
> 2.	mov	ax, [ebx]
>
> To me the code would mean 1) move the integer 1234 into ebx and then 2)
> move the value of ebx into ax.  But of course my reasoning is incorrect.

You are trying to apply indirection to ebx, failing while trying to read from 
a memory location that is not accessible to your process.

Drop the brackets, and also you probably want eax, right?

-- 
Peace can only come as a natural consequence
of universal enlightenment. -Dr. Nikola Tesla

Re: Newbie Question

[Rudolf Marek]

> 
> The following program gives me a seg fault.  But I don't understand why.
> 
> 1.	mov	ebx, dword 1234
> 2.	mov	ax, [ebx]
> 
> To me the code would mean 1) move the integer 1234 into ebx and then 

its OK


2) move the value of ebx into ax.  But of course my reasoning is incorrect.

BAD 1) you cant use opernads of different sizes.

on one side must be 32 on another 32 tooo 

2) operator [ ] is used for referencing into memory,
so you were accessing a memory and thats why the segfault 
(adress 0x1234 of process is onexistent)

if you want to "shorter" 32 bit value to 16 bit then use

mov eax,0  ;xor eax,eax works too
mov ax,bx  ;copy value from BX to AX


Ah dragan you were faster....

Regards

Rudolf



 


> 
> Feedback would be great.
> 
> Dave
> -
> To unsubscribe from this list: send the line "unsubscribe linux-assembly" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
> 

Re: Newbie Question

[Robert G. Plantz]

On Thursday, February 27, 2003, at 02:57 PM, dAvId KeDrOsKy wrote:

> The following program gives me a seg fault.  But I don't understand  
> why.
>
> 1.	mov	ebx, dword 1234
> 2.	mov	ax, [ebx]
>
> To me the code would mean 1) move the integer 1234 into ebx and then  
> 2) move
> the value of ebx into ax.  But of course my reasoning is incorrect.

Assuming that you want the (16-bit) word at address 1234 to be loaded
into ax, I see two problems:
a. address 1234 probably cannot be accessed by your program, and
b. linux is unhappy if you change ebx. (Your program needs to
    save/restore ebx.)

Bob

------------------------------------------------------------------------ 
---------------
Robert G. Plantz, PhD		| http://www.cs.sonoma.edu/~bob
Sonoma State University		| ph: (707) 664-2806
CS Department			| fax: (707) 664-3012
1801 E. Cotati Avenue		| email: plantz@sonoma.edu
Rohnert Park, CA 94928

Re: Newbie Question

[hpr]

Robert G. Plantz am Donnerstag, 27. Februar 2003 23:42:
> Assuming that you want the (16-bit) word at address 1234 to be loaded
> into ax, I see two problems:
> a. address 1234 probably cannot be accessed by your program, and
> b. linux is unhappy if you change ebx. (Your program needs to
>     save/restore ebx.)

not linux, but (probably) "C"...
i/o related syscalls use ebx for the file descriptor

hp

-- 
Linux,Assembly,Forth: <http://www.lxhp.in-berlin.de/index-lx.shtml>
    pse, reply to << lxhp -at- lxhp -dot- in-berlin -dot- de >>

Re: Newbie Question

[Slack Traq]

--- dAvId KeDrOsKy <davidkedrosky@rogers.com> wrote:
> The following program gives me a seg fault.  But I
> don't understand why.
> 
> 1.	mov	ebx, dword 1234
> 2.	mov	ax, [ebx]
> 
> To me the code would mean 1) move the integer 1234
> into ebx and then 2) move 
> the value of ebx into ax.  But of course my
> reasoning is incorrect.

First of all, if you need to pass an integer to ebx
(32 bit register) you may wanna to do
1. mov     ebx, 1234
Second, if you put the brackets between a register,
its memory address is passed to ax, in this case.
Third, you can't move a 32 bit register into a 16 bit
one. Use eax, instead.
2. mov     eax, ebx
Advice: you can decompose a 32 bit register, ie eax,
in ax. Then you can decompose ax in ah and al (8 bit
registers).
If hope it will help you.
> 
> Feedback would be great.
> 
> Dave
> -
> To unsubscribe from this list: send the line
> "unsubscribe linux-assembly" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at 
http://vger.kernel.org/majordomo-info.html

Regards,

                                            Slack

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Newbie Question

[Jeffrey Corbit]

I'm running POPTOP on a linux 2.4.18 kernel.  Have been having some
connection problems and questions to the poptop mailing list have suggested
that I need to install the Netfilter Helper PPTP files.  I have successfully
downloaded these files to my linux server and they now reside in
/root/netfilter-extensions... folder.  My question is what do I do with them
now.  I can't find any documentation a to how to apply these files to my
current configuration.

Thanks for any help you can give!

Jeff

RE: Newbie Question

[Aldo S. Lagana]

last time I installed PopTop, I had to install pptp support in netfilter
through the Patch-o-Matic (not sure it's still valid).  But I only
needed that to allow multiple outbound PPTP connections from inside a
NAT'd LAN (that is, I was NATing PPTP connections)

To simply connect to PoPToP, you need to make sure your rules are
correct in netfilter for allowing the protocol 47, port 1723, etc. to be
forwarded. Remember if you're running poptop on a netfilter server, the
INPUT and OUTPUT chains are important as is the FORWARD chain (all in
the Filter table)



> -----Original Message-----
> From: netfilter-admin@lists.netfilter.org 
> [mailto:netfilter-admin@lists.netfilter.org] On Behalf Of 
> Jeffrey Corbit
> Sent: Monday, February 24, 2003 11:23 AM
> To: netfilter@lists.netfilter.org
> Subject: Newbie Question
> 
> 
> I'm running POPTOP on a linux 2.4.18 kernel.  Have been 
> having some connection problems and questions to the poptop 
> mailing list have suggested that I need to install the 
> Netfilter Helper PPTP files.  I have successfully downloaded 
> these files to my linux server and they now reside in 
> /root/netfilter-extensions... folder.  My question is what do 
> I do with them now.  I can't find any documentation a to how 
> to apply these files to my current configuration.
> 
> Thanks for any help you can give!
> 
> Jeff
> 
> 

newbie question

[ljp]

I have a rme digi96 pst, and was wondering 2 things, how do I access the 
digital channels 1-8 both from users space and programmatically?

ljp



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Newbie question

[Shankar; Hari]

Hello,

I'm trying to use IPTables in User Mode Linux. I've configured UML to
use IPTables replacing IPChains. But when I start up UML, and try to play
around with IPTables, I get the message,

iptables v1.2.4: can't initialize iptables table `filter': Table does not
exist (do you need to insmod?)
Perhaps iptables or your kernel needs to be upgraded.

The UML version that I'm running is 2.4.19.

What could I be doing wrong? I'd very much appreciate any help!

Thanks,
Hari

Re: Newbie question

[Joel Newkirk]

On Sunday 16 February 2003 02:04 am, Shankar; Hari wrote:
> Hello,
>
> I'm trying to use IPTables in User Mode Linux. I've configured UML to
> use IPTables replacing IPChains. But when I start up UML, and try to
> play around with IPTables, I get the message,
>
> iptables v1.2.4: can't initialize iptables table `filter': Table does
> not exist (do you need to insmod?)
> Perhaps iptables or your kernel needs to be upgraded.
>
> The UML version that I'm running is 2.4.19.
>
> What could I be doing wrong? I'd very much appreciate any help!

Sorry to sound like a smartass, but did you try insmod?  :^)

"/sbin/insmod ip_tables" or "/sbin/modprobe ip_tables" will load the 
iptables module, including the default table - filter.  (insmod inserts 
the module into the running kernel, modprobe looks for it already 
loaded, and calls insmod if it's not found)  If you get a message that 
insmod or modprobe can't be found, try "whereis insmod" to find the 
correct path on your distro.  (I'm not familiar with how UML is laid 
out)  I'll assume that with a 2.4.19 kernel that the ip_tables module is 
available.  

The module has to be loaded (or compiled into the kernel) in order for 
the iptables userland command to function, so you really want it started 
when the system starts.  You can try "serviceconf", which is usually 
available, or "ksysv" if you have KDE installed, which gives you a 
nicer, more detailed interface.  If it runs, check to see if "iptables" 
is listed, probably not selected to run.  Select it to start during 
startup, and next time the module will be inserted automatically, and 
basic rules will be set.  (Very basic, like no rules at all and ACCEPT 
policy on all chains...!)

Serviceconf will let you control startup for the runlevel you are 
currently in.  Ksysv lets you control ALL runlevels in a single view: 3 
is a console startup (you have text interface for login, whether or not 
you load xwindows later) and 5 is xwindows startup, where you have 
graphical interface for login.  Best bet is to start it in both anyway.  
Don't muck with other runlevels until you know what they do, and know 
what SysV-Init accomplishes in them.

The nice thing with ksysv is it lets you control the sequence of 
startups, IE to ensure that a custom firewall script is started AFTER 
the iptables startup takes place - serviceconf doesn't offer this, IIRC, 
you have to manually change the link names in /etc/rc.d/rc5.d for 
example.

Finally (but actually first and foremost) you should get iptables v1.2.7a 
installed, but you'll need to be comfortable with compiling and 
installing to do so.  If you're not, then just work with what you have 
for now and get familiar and comfortable first - but be aware that the 
answer to a support question will sometimes be "install 1.2.7a then 
ask".

j

Re: Newbie question

[Shankar; Hari]

Hi Joel,

Thanks a lot! Apparently I hadn't loaded the iptable_filter.o module while
configuring uml, and loading it seemed to do the trick! And I will make
sure to upgrade to iptables 1.2.7a too!

Thanks,
Hari

> Finally (but actually first and foremost) you should get iptables v1.2.7a 
> installed, but you'll need to be comfortable with compiling and 
> installing to do so.  If you're not, then just work with what you have 
> for now and get familiar and comfortable first - but be aware that the 
> answer to a support question will sometimes be "install 1.2.7a then 
> ask".
> 
> j
> 
> 
> 

Newbie Question

[Adam Tee]

Hi,

I'm new to alsa programming and am trying to add an alternative playback
option for denemo, a Gtk frontend for Lilypond.  At present we have code
   to playback a note immediately it is inserted to the score via the OSS
style of programming, this goes to /dev/sequencer0, but under the alsa
drivers this does not work for me, at least.

My question is should I use the sequencer api or the raw midi api??
and any tips on how to use it.

I am currently using a SBLive card and am not having much luck.



Adam
Maintainer GNU Denemo, a GTK+ frontend to GNU Lilypond




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newbie question

[regina]

Hi,
> I am newbie in iptables and linux. I would like to get packets , 
> modify it and send it again. To modify the packet (i.e. insert error) 
> , is there any programming software in netfilter? or any 
> recommendation? Or should I use C++ and if I use C++ where should I 
> save the program so I can use it with iptables? Thank you.
>
> Sincerely,
> Regina R

Re: newbie question

[Maciej Soltysiak]

> Hi,
> > I am newbie in iptables and linux. I would like to get packets ,
> > modify it and send it again. To modify the packet (i.e. insert error)
> > , is there any programming software in netfilter? or any
> > recommendation? Or should I use C++ and if I use C++ where should I
> > save the program so I can use it with iptables? Thank you.
Direct your question to the devel list.
netfilter-devel@lists.samba.org


regards,
Maciej

Newbie question

[Glen Spidal]

[-- Attachment #1.1: Type: text/plain, Size: 210 bytes --]

What IPTables commands do I need to issue in a script to allow port 25 and
110 (email) to work.  See attached PDF file.

Glen Spidal
Hillsboro Oregon USA
PH: 503-681-9786  FX: 503-615-2936
www.cybercorpinc.com

[-- Attachment #1.2: Type: text/html, Size: 926 bytes --]

[-- Attachment #2: fhlsnet.pdf --]
[-- Type: application/pdf, Size: 19864 bytes --]

Re: Newbie question

[Bart]

[-- Attachment #1: Type: text/plain, Size: 1439 bytes --]


Glen Spidal wrote:

> What IPTables commands do I need to issue in a script to allow port 25 
> and 110 (email) to work.  See attached PDF file.

Can't you set up the Windows 2000 Pro as a client, and use Linux as the 
main router ?

Otherwise you need to do:

1) add destination(192.168.254.X)-gateway(192.168.0.47) route for each 
client PC on the windows PC,  
since the client IP's are dynamic, this is impractical.
OR
2) enable MASQUERADING on the linuxbox
iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE


In both cases enable ip_forwarding on the linuxbox.
echo "1" > /proc/sys/net/ipv4/ip_forward

This offcourse doesn't matter for http if you use a proxy, but anything 
else 
won't work without one of the two mentioned above.

Then you can add some rules like:
  iptables -P forward drop

  iptables -A forward -i eth0 -o eth1 -sport 25 -m state --state 
ESTABLISHED -j ACCEPT
  iptables -A forward -i eth1 -o eth0 -dport 25 -j ACCEPT

  iptables -A forward -i eth0 -o eth1 -sport 110 -m state --state 
ESTABLISHED -j ACCEPT
  iptables -A forward -i eth1 -o eth0 -dport 110 -j ACCEPT


The ip of eth0 (192.168.254.250) is the same as the dhcp-server 
(192.168.254.250) which
doesn't make sense (to me).

( eth0 = connected to windows, eth1 connect to switch )

HTH
greetz
B.Mermuys


>  
> Glen Spidal
> Hillsboro Oregon USA
> PH: 503-681-9786  FX: 503-615-2936 
> www.cybercorpinc.com <http://www.cybercorpinc.com/>
>  



[-- Attachment #2: Type: text/html, Size: 2555 bytes --]

Newbie question

[Brian Waite]

Hi, 
I am very new to the MTD world and I had a quick question that may rank in the 
RTFM land, but I am doing that and not finding an answer. I have a board that 
has 2-2x16 128 Mbit Intel StrataFLASHes side by side that I want to run with 
the MTD layer. It looks like the cfi_cmdset_001.c will work except I have to 
issue commands to both FLASH chips at the same time. Has anyone implimented 
something like this? Is there some documentation other than the infradead 
site? As long as this is up to date I am happy, but I wasn't convinced it is 
fully up-to-date. I am coming the archives so even a quick subject line 
pointer would be great. 
Thanks 
Brian Waite

Re: Newbie question

[Russ Dill]

On Mon, 2002-12-02 at 11:23, Brian Waite wrote:
> Hi, 
> I am very new to the MTD world and I had a quick question that may rank in the 
> RTFM land, but I am doing that and not finding an answer. I have a board that 
> has 2-2x16 128 Mbit Intel StrataFLASHes side by side that I want to run with 
> the MTD layer. It looks like the cfi_cmdset_001.c will work except I have to 
> issue commands to both FLASH chips at the same time. Has anyone implimented 
> something like this? Is there some documentation other than the infradead 
> site? As long as this is up to date I am happy, but I wasn't convinced it is 
> fully up-to-date. I am coming the archives so even a quick subject line 
> pointer would be great. 

something like this just "works" (due to a lot of good programming)

Re: Newbie question

[Brian Waite]

I love it when good design shines. I can't wait to get the board up and watch 
the magic. Thanks for the information!
Brian
\On Monday 02 December 2002 1:55 pm, Russ Dill wrote:
> On Mon, 2002-12-02 at 11:23, Brian Waite wrote:
> > Hi,
> > I am very new to the MTD world and I had a quick question that may rank
> > in the RTFM land, but I am doing that and not finding an answer. I have a
> > board that has 2-2x16 128 Mbit Intel StrataFLASHes side by side that I
> > want to run with the MTD layer. It looks like the cfi_cmdset_001.c will
> > work except I have to issue commands to both FLASH chips at the same
> > time. Has anyone implimented something like this? Is there some
> > documentation other than the infradead site? As long as this is up to
> > date I am happy, but I wasn't convinced it is fully up-to-date. I am
> > coming the archives so even a quick subject line pointer would be great.
>
> something like this just "works" (due to a lot of good programming)

CVS Respository failures

[Noah]

Just tried to d/l the latest ipfilter from CVS, and got the following
error:

sitz@uberwench:~/src/tmp$ cvs -d
:pserver:cvs@pserver.netfilter.org:/cvspublic co netfilter/userspace
can't create temporary directory /tmp/cvs-serv32524
No space left on device

I'm thinking that since there's space on /my/ system, that the cvs server
is having space issues? =)

--n

Newbie Question

[Louie]

Hello all!

Hope that everyone had a good weekend. I
was wondering does anyone know a site
that has simple explains on iptables
like "Iptables for bumbies"

Thank you,

Louie

Newbie Question

[dAvId KeDrOsKy]

Hello, 

I have recently started learning x86 assembly and have been programming it in 
Linux with NASM (Netwide Assembler). 

I am trying to write a program that takes a string as input, reverses it and 
calculated its length.  I'm using the stack to do so.  

Here's my problem..  NASM only lets me move the string into a 32-bit register.

e.g.  		mov	EBX, the_string		; move memory address of the_string into EBX

At this point I need to push the register on the stack.  I know I can do:

push EBX
call string_length_procedure

BUT I was wondering how it is possible to push BX instead.  Does BX also hold 
the string in this case, considering the size of the string it isn't that 
big?  If not, is there a way to put the contents of EBX (the string) into BX? 
For the time being I would like to just deal with 16-bit registers because it 
is easier to follow along with the book I am using.

P.s. I am using an already coded procedure that gets the string for me and 
puts it into 'string' in this case.

Re: Newbie Question

[Rudolf Marek]

> BUT I was wondering how it is possible to push BX instead.  Does BX also hold 
> the string in this case, considering the size of the string it isn't that 
> big?  If not, is there a way to put the contents of EBX (the string) into BX? 
> For the time being I would like to just deal with 16-bit registers because it 
> is easier to follow along with the book I am using.

Yes but if you are using linux it uses 32-bit memory pointers so you 
should use the 32 bit regs. If you want use some "done" work which is 
16bit you can just put "e" in front of 16 bit registers to ensure 
functionality. (I think)

Regards

Rudolf

Re: Newbie Question

[Brian Raiter]

> Here's my problem..  NASM only lets me move the string into a 32-bit
> register.

Please note that the register does NOT contain the string -- just a
POINTER to the string (i.e., its memory address).

> BUT I was wondering how it is possible to push BX instead.  Does BX
> also hold the string in this case, considering the size of the
> string it isn't that big?

The size of the POINTER has no relationship to the size of the
string. (If I give you a street address, like 1148 23rd Ave. S, you
have no way of telling from that address if the house is big or
small.)

> If not, is there a way to put the contents of EBX (the string) into
> BX?  For the time being I would like to just deal with 16-bit
> registers because it is easier to follow along with the book I am
> using.

Then perhaps you need a different book.

Imagine an airplane pilot climbing into the cockpit of a 747 and
asking how he can use a propeller instead of a jet engine, because he
doesn't need to fly very far, and the flying instructions he was given
was for an airplane with a propeller. What odds would you give that
that pilot is going to be able to get to the runway, much less off of
it?

b

Re: Newbie Question

[Robin Miyagi]

Here is a 32 bit i386 assembler course;

http://www.drpaulcarter.com/pcasm/

It has good linux coverage.  This link can be found on Konstanin's
linux assembly resources page.

On Thursday 24 October 2002 16:43, Brian Raiter wrote:
>
> Then perhaps you need a different book.
>

-- 
Robin Miyagi<penguin-computing@c2c2c.ca>
http://penguin.c2c2c.ca/
The funny thing about brakes, is that when they break, they don't brake.

Newbie Question

[William L. Childers]

All,

	I have a network with 4 computers behind the firewall.  Three of these
are workstations.  The firewall works fine for these.  Here is the fun
part.  

One of the computers is a server with the Windows 2000 Operating System
installed.  It is running IIS, and a mail server.  The SMTP portion of
IIS is configured to send email out on port 1125.  I have DNAT working
for the WEB server and SMTP.  There is, however, an issue with one of
the applications that is running on the web server.  It will not send
email out on port 1125.  The rules that I am trying to get to work are:
## Outgoing SNAT Port 1125 only
$IPTABLES -A PREROUTING -t nat -i $INTERNALIF -p tcp --sport 1125 -j
SNAT --to $MYADDR

$IPTABLES -A FORWARD -i $INTERNALIF -p tcp -d 192.168.0.4 --sport 1125
-j ACCEPT

$INTERNALIF is the Private Interface
$MYADDR is the Public IP Address

192.168.0.4 is the Private IP of the IIS Server 

Thank you in advance for any assistance that you may be able to provide.

Bill

Newbie question

[juanba romance gallego]

Hello, i have a SBC called wafer5820 which already has
a DOC2000 from M-system. I am trying to detect the
chip following the howto-mtd procedure but the device
seems to be missed. I also have other DOS software
provided by M-system called dinfo.exe and all seems to
be right. it says that i have a Milenium device
plugged into the socket 0 mapped at address d6000. I
also can format the device and all the stuff. I
undertsand that the device should be detected by the
docprobe code. but /var/log/messages only says

No recognised DiskOnChip devices found
Uhmm i am using the modules provided by Mandrake-9.0
which holds a 2.4.19-9 linux kernel.

Any Hint?
Thanks in advanced

=====
Juanba Romance

_______________________________________________________________
Yahoo! Messenger
Nueva versión: Webcam, voz, y mucho más ¡Gratis! 
Descárgalo ya desde http://messenger.yahoo.es

Re: Newbie question

[Mark Meade]

If I remember correctly, the modules shipped with earlier versions of 
Mandrake did not have all the proper options enabled to support DiskOnChip 
out of the box.  This may also be true with 9.0.

You may need to rebuild the modules with the following options:
 
                CONFIG_MTD=m
                CONFIG_MTD_DEBUG=y 
                CONFIG_MTD_CHAR=m
                CONFIG_NFTL=m
                CONFIG_NFTL_RW=y 
                CONFIG_MTD_DOC2000=m
                CONFIG_MTD_DOCPROBE=m

juanba romance gallego wrote:
> No recognised DiskOnChip devices found
> Uhmm i am using the modules provided by Mandrake-9.0
> which holds a 2.4.19-9 linux kernel.

Newbie Question

[Robert Rusek]

[-- Attachment #1: Type: text/plain, Size: 188 bytes --]

I have been out of the loop for quite a while.  Is there a functional or
completed port of any of the RedHat flavors?  If so how would I go about
getting them?
 
Thanks,
--
Robert Rusek
 

[-- Attachment #2: Type: text/html, Size: 838 bytes --]

Newbie Question

[Robert Rusek]

[-- Attachment #1: Type: text/plain, Size: 188 bytes --]

I have been out of the loop for quite a while.  Is there a functional or
completed port of any of the RedHat flavors?  If so how would I go about
getting them?
 
Thanks,
--
Robert Rusek
 

[-- Attachment #2: Type: text/html, Size: 838 bytes --]

Re: Newbie question...

[Bartosch Pixa]

Julien wrote:
 >
 > Hi...
 >
 > If I remember well, currently r10k are only supported on ip22 boards
 > (O2, etc)... I'm quite pessimistic for your Octane (in the immediate
 > futur). Are you looking for Linux to use it as a full featured os ?
 > linux-mips is still in intensive development (for example, only the
 > Indy
 > XL graphic card is supported, all other machines need a serial console
 > to use them), so if you planned to use it as an Irix replacement, it's
 > to soon  [;-)]
 > If you feel it, and can find enough documentation about IP30 boards,
 > it should be possible to do the port yourself   ;-))
 >
 > hope this answers your question


thx, this is not exactly what i wanted to hear ;)
but i think i'll give it a try, any hint where i should start getting 
into it, like i said i'm quite new to mips ...but i realy want to give
it a try :)

Bartosch Pixa

-- 
Bartosch Pixa, bartosch.pixa@infopark.de
Infopark AG
Kitzingstr. 15, D-12277 Berlin, Germany
Tel +49(0)-30-747.993.0, Fax +49(0)-30-747.993.93
http://www.infopark.de/

Newbie question...

[Bartosch Pixa]

Hi

i'm quite new to the mips architecture so sorry if i ask dumb/useless
questions. i just bought a used Octane (IP30 R10K ...) and now i'm 
curious if it's possible to get linux on it ;)
Any help/hints apreciated


Thx in advance

Bartosch Pixa

-- 
Bartosch Pixa, bartosch.pixa@infopark.de
Infopark AG
Kitzingstr. 15, D-12277 Berlin, Germany
Tel +49(0)-30-747.993.0, Fax +49(0)-30-747.993.93
http://www.infopark.de/

Re: Newbie question...

[Mat Withers]

Bartosch Pixa (bartosch.pixa@infopark.de) wrote:
> Hi
> 
> i'm quite new to the mips architecture so sorry if i ask dumb/useless
> questions. i just bought a used Octane (IP30 R10K ...) and now i'm 
> curious if it's possible to get linux on it ;)
> Any help/hints apreciated
> 
> 
> Thx in advance
> 
> Bartosch Pixa
> 
> -- 
> Bartosch Pixa, bartosch.pixa@infopark.de
> Infopark AG
> Kitzingstr. 15, D-12277 Berlin, Germany
> Tel +49(0)-30-747.993.0, Fax +49(0)-30-747.993.93
> http://www.infopark.de/
> 
> 
> 

I'm also quite interested in mips linux - I've got an Indigo 2 R4400SC with 128 Mb RAM sitting under my desk at home doing nothing.  Is this a reasonable platform to run ? I understand that I would have to use a serial console at the moment - are there any plans to support a text console on the Indigo 2 gfx hardware (I don't really care about X). How easy is the install ? 

Any info would be gratefully received

Cheers

Mat

-- 

Mat Withers
mat@minus-9.com
http://minus-9.com
phone: +44 7092 019849
"a sarcasm detector, *that's* a real useful invention."

Re: Newbie question...

[Keith M Wesolowski]

On Wed, Jun 13, 2001 at 04:07:45PM +0100, Mat Withers wrote:

> I'm also quite interested in mips linux - I've got an Indigo 2
> R4400SC with 128 Mb RAM sitting under my desk at home doing nothing.
> Is this a reasonable platform to run ? I understand that I would
> have to use a serial console at the moment - are there any plans to
> support a text console on the Indigo 2 gfx hardware (I don't really
> care about X). How easy is the install ?

As the FAQ states, this box should work fine.  Graphics hardware will
be supported when documentation is available or someone manages to
reverse-engineer it.  Perhaps you'd like to volunteer?

The install is a trivial matter for experienced hackers, an annoyance
to people who've never strayed outside the chartered bounds of
commercial Linux on peecees, and a source of unending pain and grief
for newbies.  Unfortunately it's getting easier all the time.

-- 
Keith M Wesolowski <wesolows@foobazco.org> http://foobazco.org/~wesolows
------(( Project Foobazco Coordinator and Network Administrator ))------
	"Nothing motivates a man more than to see his boss put
	 in an honest day's work." -- The fortune file

Re: Newbie question...

[Keith M Wesolowski]

On Wed, Jun 13, 2001 at 03:59:26PM +0200, Bartosch Pixa wrote:

> i'm quite new to the mips architecture so sorry if i ask dumb/useless
> questions. i just bought a used Octane (IP30 R10K ...) and now i'm 
> curious if it's possible to get linux on it ;)

Not at this time, though a few people have started to look at it.  If
you have irix headers and an ability to mangle the kernel for the
better you should probably coordinate with Ralf and get started.  IP30
is not very different from IP27, so the port should not be excessively
difficult.

-- 
Keith M Wesolowski <wesolows@foobazco.org> http://foobazco.org/~wesolows
------(( Project Foobazco Coordinator and Network Administrator ))------
	"Nothing motivates a man more than to see his boss put
	 in an honest day's work." -- The fortune file

Re: Newbie question...

[mjpento]

Hello folks,

	I am actually inquiring on a similar note. I have an Indigo 
R3000 under my desk that is collecting dust. Firstly, I would like to 
port a linux kernel to this system. I am sort of a newbie to porting 
os's. So, I have a few questions that I would like to ask:

1. Is there someone out there working on a port to the R3000's 
Indigo's? If so, does someone know who it is or a link to a 
website??? etc ...

2. Since I am rather new to porting, is there a resource that you 
folks would suggest out there on the internet that would be a good 
starting point for information or tips on the best porting methods?

Any help would be greatly appreciated,
Mike

Re: Newbie question...

[Florian Lohoff]

On Wed, Jun 13, 2001 at 05:50:06PM -0400, mjpento wrote:
> Hello folks,
> 
> 	I am actually inquiring on a similar note. I have an Indigo 
> R3000 under my desk that is collecting dust. Firstly, I would like to 
> port a linux kernel to this system. I am sort of a newbie to porting 
> os's. So, I have a few questions that I would like to ask:
> 
> 1. Is there someone out there working on a port to the R3000's 
> Indigo's? If so, does someone know who it is or a link to a 
> website??? etc ...
> 
> 2. Since I am rather new to porting, is there a resource that you 
> folks would suggest out there on the internet that would be a good 
> starting point for information or tips on the best porting methods?

R3000 is no problem - The Indigo (1 IP12 ?) is the problem - Its mostly
undocumented and i havent heard of anyone trying to do something about it.

Flo
-- 
Florian Lohoff                  flo@rfc822.org             +49-5201-669912
     Why is it called "common sense" when nobody seems to have any?

Re: Newbie question...

[Jan-Benedict Glaw]

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On Wed, Jun 13, 2001 at 05:50:06PM -0400, mjpento wrote:
[Indigo R3000]

> 1. Is there someone out there working on a port to the R3000's 
> Indigo's? If so, does someone know who it is or a link to a 
> website??? etc ...

Rumor was that Michael Engel was working on the Indigo. I've got
such a beast as well (okay, it's an OEM version build by Siemens
Nixdorf), but there's no Linux running on this box these days.

From what I've heared, the Indigo R3k is quite different to most
other supported machines (Indy, Indigo2) so a port will be
somewhat difficult. The machine isn't the fastest one (well, 
mine is running wirh Irix 5.2 and the flight simulator is quite nice
to play with:-), but it *would* be more then fast enough to run
Linux.

> 2. Since I am rather new to porting, is there a resource that you 
> folks would suggest out there on the internet that would be a good 
> starting point for information or tips on the best porting methods?

Porting Linux to Indigo R3k is difficult. There seems to be no
hardware documentation available (except Irix header files). So
porting will be a means of reading header files, using an oscilloscope
and disassembline Irix' kernel. 

> Any help would be greatly appreciated,

I'd really *love* to see Linux running on Indigo R3k, but I'm not
experienced enough to do the port. However, I'd like to help and
cooperate with more experienced programmers to make it running, but
they're more or less fixed to their bigger^Wfaster machines...

Michael, have you had any success with your Indigo R3k?

MfG, JBG

-- 
Fehler eingestehen, Größe zeigen: Nehmt die Rechtschreibreform zurück!!!
/* Jan-Benedict Glaw <jbglaw@lug-owl.de> -- +49-172-7608481 */
keyID=0x8399E1BB fingerprint=250D 3BCF 7127 0D8C A444 A961 1DBD 5E75 8399 E1BB
     "insmod vi.o and there we go..." (Alexander Viro on linux-kernel)

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Newbie question

[Pedro Miguel Semeano]

Hello all,

I'm doing a project in linux, and I'm changing the driver of sym53c8xx (a 
SCSI board) to support Target mode. 

To receive data, we need 2 interrupts. One is for initializing all of the 
structures needed, and the second to send the data to the SCSI layer. What 
happens is that bettwen that two interrupts i can't start sending data, but 
in some cases that happen, and is beyond my control. To start sending data I 
set a bit in a certain register of the chip. 

What i would like to know is how can i to a kind of lock so that I set a 
variable in the first interrupt, and unset it in the second. If the SCSI 
layer trys to send data, I whant to stop before I set the bit of the chip. 
But I don't know how...

Can anybody tel me how to do it?

Pedro Semeano

strace sysmips support (was: Re: [FIX] sysmips(MIPS_ATMIC_SET, ...) ret_from_sys_call vs. o32_ret_from_sys_call)

[Wichert Akkerman]

Previously Florian Lohoff wrote:
> From the strace i find
> 
> sysmips(0x7d1, 0x2ac95d24, 0x1, 0)      = 4149

FWIW, I've just put code in strace CVS to decode this properly. Looking
in my (stock Linus) kerneltree I noticed the sys_sysmips code assumes
it can get away with converting an int to a char*, which seems like a
wrong assumption to me..

I don't have my indy up and running at the moment, so the code is
completely untested. Feedback is welcomed :)

Wichert.

-- 
  _________________________________________________________________
 /       Nothing is fool-proof to a sufficiently talented fool     \
| wichert@cistron.nl                  http://www.liacs.nl/~wichert/ |
| 1024D/2FA3BC2D 576E 100B 518D 2F16 36B0  2805 3CB8 9250 2FA3 BC2D |

newbie question.

[Can Altineller]

	Hello;

	I got an Indy 4600SC with 64Megs of memory, and I dont feel like
running Irix on it. What is the status of the sgi port port of linux. Is
there a distro available? Also, I dont have a floppy in my indy, so can I
net boot? If someone point me out in the correct way, I will be very
happy.

	Thanks.
	-C.A.

Re: newbie question.

[David Jez]

On Mon, Feb 19, 2001 at 02:52:10PM -0500, Can Altineller wrote:
> 
> 	Hello;
> 
> 	I got an Indy 4600SC with 64Megs of memory, and I dont feel like
> running Irix on it. What is the status of the sgi port port of linux. Is
> there a distro available? Also, I dont have a floppy in my indy, so can I
> net boot? If someone point me out in the correct way, I will be very
> happy.
Hi,

Try download doc & faqs & tutorials & distro from:

ftp://ftp.oss.sgi.com/pub/linux/mips

or RedHat from:

ftp://ftp.oss.sgi.com/pub/linux/mips/redhat

PS: Don't worry about instalation. In directory redhat you can find Getting
started and README. Read it carefully. If you search archive of this conf. you
can find thread about netbooting Indy ( bootp():/vmlinuz ) from PROM monitor
and setting bootpd in linux boot server.
> 
> 	Thanks.
> 	-C.A.
> 
> 
Best Regards,
Dave

-- 
-------------------------------------------------------
  David "Dave" Jez                Brno, CZ, Europe
 E-mail: dave.jez@seznam.cz
PGP key: finger xjezda00@fest.stud.fee.vutbr.cz
---------=[ ~EOF ]=------------------------------------

Re: newbie question.

[Mike McDonald]

>Date:   Tue, 20 Feb 2001 08:06:10 +0100
>From: David Jez <dave.jez@seznam.cz>
>To: Can Altineller <altine@ee.fit.edu>
>Subject: Re: newbie question.
>
>On Mon, Feb 19, 2001 at 02:52:10PM -0500, Can Altineller wrote:
>> 
>> 	Hello;
>> 
>> 	I got an Indy 4600SC with 64Megs of memory, and I dont feel like
>> running Irix on it. What is the status of the sgi port port of linux. Is
>> there a distro available? Also, I dont have a floppy in my indy, so can I
>> net boot? If someone point me out in the correct way, I will be very
>> happy.
>Hi,
>
>Try download doc & faqs & tutorials & distro from:
>
>ftp://ftp.oss.sgi.com/pub/linux/mips

  Actually, it's ftp://oss.sgi.com/pub/linux/mips but I can't find any
FAQs or tutorials there. http://oss.sgi.com/mips/ has some more info.
(I've heard there's a FAQ someplace but I've never found it.)


  Mike McDonald
  mikemac@mikemac.com

Re: newbie question.

[nick]

www.foobazco.org is the faq I have used.
	Nick

On Tue, 20 Feb 2001, Mike McDonald wrote:

> 
> >Date:   Tue, 20 Feb 2001 08:06:10 +0100
> >From: David Jez <dave.jez@seznam.cz>
> >To: Can Altineller <altine@ee.fit.edu>
> >Subject: Re: newbie question.
> >
> >On Mon, Feb 19, 2001 at 02:52:10PM -0500, Can Altineller wrote:
> >> 
> >> 	Hello;
> >> 
> >> 	I got an Indy 4600SC with 64Megs of memory, and I dont feel like
> >> running Irix on it. What is the status of the sgi port port of linux. Is
> >> there a distro available? Also, I dont have a floppy in my indy, so can I
> >> net boot? If someone point me out in the correct way, I will be very
> >> happy.
> >Hi,
> >
> >Try download doc & faqs & tutorials & distro from:
> >
> >ftp://ftp.oss.sgi.com/pub/linux/mips
> 
>   Actually, it's ftp://oss.sgi.com/pub/linux/mips but I can't find any
> FAQs or tutorials there. http://oss.sgi.com/mips/ has some more info.
> (I've heard there's a FAQ someplace but I've never found it.)
> 
> 
>   Mike McDonald
>   mikemac@mikemac.com
> 

Re: newbie question.

[Ralf Baechle]

On Tue, Feb 20, 2001 at 12:26:11PM -0800, Mike McDonald wrote:

>   Actually, it's ftp://oss.sgi.com/pub/linux/mips but I can't find any
> FAQs or tutorials there. http://oss.sgi.com/mips/ has some more info.
> (I've heard there's a FAQ someplace but I've never found it.)

Write 100 times: http://oss.sgi.com/mips/mips-howto.html ;-)

  Ralf