Re: IPv6 site local EUI-64 adresses and jails

2005-08-13 Thread David Malone
On Fri, Aug 12, 2005 at 08:53:20PM +0200, Emanuel Strobl wrote:
> Now in the 24-16-24 scheme of th interface id part of the IPv6 address, the 
> 16 bits were inserted with the value FFFE. And bit 57 was changed to one! 
> Why What if it is alread one? Or isn't tehre any vendor who can have 
> bit 41 of his MAC 1?

Some of the bits of a MAC address are reserved. There is a bit that
indicates if the address is the address of a group of machines (for
multicast) or the address of a single machine. The bit that is
flipped when generating IPv6 addresses is the "local/global" bit,
that indicates if the address has been assigned locally or by some
global authority.  For normal ethernet cards, this bit would always
be 0.

> Now I want to use a dedicated interface, which is in a different subnet, 
> for 5 jails. How do I do that if I want to keep the MAC relation and if 
> I'm not allewd to change the FFFE insert? It isn't possible then, is it?
> What should I do instead? Invent my own 64-bit scheme?

I'd suggest that you use manually assigned addresses in cases like this.
You know what sort of addresses will be generated by autoconfiguration,
so it should be easy for you to choose addresses that won't clash.

Unfortunately jails do not actually support restricting the use of IPv6
addresses right now.

David.
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Re: f77 abort

2005-08-04 Thread David Malone
On Thu, Aug 04, 2005 at 11:00:46AM +0300, Danny Braniss wrote:
>   this 11k lines of fortran compile and run under Linux,
> on FreeBSD 5.4, compiling with f77 produces a binary, apparently without 
> errors, but
> executing it, inmediately gives 'Abort', ldd gives signal 6
>   ktrace is not very helpful :-)
>  36372 ktrace   RET   ktrace 0
>  36372 ktrace   CALL  execve(0xbfbfea0f,0xbfbfe914,0xbfbfe91c)
>  36372 ktrace   NAMI  "./xm99"
> 
> any ideas?

Could it have a very big stack or heap? Try increasing your stacksize
and datasize limits.

David.
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Re: bsdextended mac module question

2005-06-27 Thread David Malone
On Mon, Jun 27, 2005 at 10:45:35AM +0200, K?vesd?n G?bor wrote:
> Hello,
> 
> I try to make a bsdextended mac policy and when I add the following 
> rule, I can't login with a simple user:
> 
> ugidfw add subject not uid root object uid root mode rx

I think you'll need to allow stat permission too - say "rxs" not
just "rx".

You may also want to think about what this rule does to /tmp.

David.
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Re: 20TB Storage System

2003-09-03 Thread David Malone
On Wed, Sep 03, 2003 at 11:06:15AM +, Geoff Buckingham wrote:
> However I just read the newfs man page and am intrigued to know what effect
> the -g and -h options have
> 
>  -g avgfilesize
>  The expected average file size for the file system.
> 
>  -h avgfpdir
>  The expected average number of files per directory on the file
>  system.

I believe these are used by the dirpref stuff to decide how to distribute
files and directories evenly throughout the dis.

David.
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