[gentoo-user] PRNG is not seeded

[gentoo-user] PRNG is not seeded

[Kaushal Shriyan]

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Hi

when i restart sshd I get PRNG is not seeded

# /etc/init.d/sshd restart
PRNG is not seeded
 #

No idea as what is going on

Thanks and Regards

Kaushal

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Re: [gentoo-user] PRNG is not seeded

[Alex Schuster]

Kaushal Shriyan writes:

> when i restart sshd I get PRNG is not seeded
>
> # /etc/init.d/sshd restart
> PRNG is not seeded
>  #
>
> No idea as what is going on

I can reproduce this behaviour when I rename both /dev/random 
and /dev/urandom. Are they perhaps both missing on your system?

	Wonko
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Re: [gentoo-user] PRNG is not seeded

[Neil Bothwick]

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On Wed, 26 Mar 2008 21:17:07 +0530, Kaushal Shriyan wrote:

> when i restart sshd I get PRNG is not seeded
> 
> # /etc/init.d/sshd restart
> PRNG is not seeded

Does /dev/urandom exist? What are it's permissions?


-- 
Neil Bothwick

Never eat more than you can lift.

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Re: [gentoo-user] PRNG is not seeded

[Kaushal Shriyan]

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On Wed, Mar 26, 2008 at 9:46 PM, Neil Bothwick <neil@digimed.co.uk> wrote:

> On Wed, 26 Mar 2008 21:17:07 +0530, Kaushal Shriyan wrote:
>
> > when i restart sshd I get PRNG is not seeded
> >
> > # /etc/init.d/sshd restart
> > PRNG is not seeded
>
> Does /dev/urandom exist? What are it's permissions?
>
>
> --
> Neil Bothwick
>
> Never eat more than you can lift.
>

Hi

Thanks for the clue,

Both the files /dev/random and /dev/urandom are missing in my system.

How do i go ahead in fixing this issue

Thanks and Regards

Kaushal

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Re: [gentoo-user] PRNG is not seeded

[Dale]

Kaushal Shriyan wrote:
> On Wed, Mar 26, 2008 at 9:46 PM, Neil Bothwick <neil@digimed.co.uk 
> <mailto:neil@digimed.co.uk>> wrote:
>
>     On Wed, 26 Mar 2008 21:17:07 +0530, Kaushal Shriyan wrote:
>
>     > when i restart sshd I get PRNG is not seeded
>     >
>     > # /etc/init.d/sshd restart
>     > PRNG is not seeded
>
>     Does /dev/urandom exist? What are it's permissions?
>
>
>     --
>     Neil Bothwick
>
>     Never eat more than you can lift.
>
>
> Hi
>
> Thanks for the clue,
>
> Both the files /dev/random and /dev/urandom are missing in my system.
>
> How do i go ahead in fixing this issue
>
> Thanks and Regards
>
> Kaushal
>

I just noticed this on mine.  Do you have the service urandom in the 
boot runlevel? 

root@smoker / # eselect rc list boot
Init scripts to be started by runlevel boot
  bootmisc
  checkfs
  checkroot
  clock
  consolefont
  hostname
  keymaps
  localmount
  modules
  net.lo
  rmnologin
  serial
  urandom
root@smoker / #


That may help.  If it is there, try restarting it and see if you get any 
errors.  Make sure you don't have anything important running just in 
case it stops other services when restarting this service.

Dale

:-)  :-) 
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Re: [gentoo-user] PRNG is not seeded

[Alex Schuster]

Dale writes:

> Kaushal Shriyan wrote:

> > Both the files /dev/random and /dev/urandom are missing in my system.
> >
> > How do i go ahead in fixing this issue
> >
> > Thanks and Regards
> >
> > Kaushal
>
> I just noticed this on mine.  Do you have the service urandom in the
> boot runlevel?

Looking at the init script it seems like if the character 
device /dev/urandom does not exist, it exits directly.

Does anyone know what exactly creates these device nodes and why it could 
fail? 
You could try to create them manually, but I doubt that this helps:
  mknod /dev/random  c 1 8
  mknod /dev/urandom c 1 9

Kayshal, do you remember doing anything spoecial before this happened? 
Booting a new kernel, updating things like hotplug / udev stuff?

	Wonko
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Re: [gentoo-user] PRNG is not seeded

[Roger Mason]

Alex Schuster <wonko@wonkology.org> writes:

> Dale writes:
>
>> Kaushal Shriyan wrote:
>
>> > Both the files /dev/random and /dev/urandom are missing in my system.
>> >
>> I just noticed this on mine.  Do you have the service urandom in the
>> boot runlevel?
>
> Looking at the init script it seems like if the character 
> device /dev/urandom does not exist, it exits directly.
>
> Does anyone know what exactly creates these device nodes and why it could 
> fail? 

Some kernel option?

grep RANDOM /usr/src/linux/.config
CONFIG_HW_RANDOM=y
CONFIG_HW_RANDOM_INTEL=y
CONFIG_HW_RANDOM_AMD=y
CONFIG_HW_RANDOM_GEODE=y
CONFIG_HW_RANDOM_VIA=y

Roger
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Re: [gentoo-user] PRNG is not seeded

[Alex Schuster]

Roger Mason writes:

> Alex Schuster <wonko@wonkology.org> writes:
[/dev/random, /dev/urandom]
> > Does anyone know what exactly creates these device nodes and why it
> > could fail?
>
> Some kernel option?
>
> grep RANDOM /usr/src/linux/.config
> CONFIG_HW_RANDOM=y
> CONFIG_HW_RANDOM_INTEL=y
> CONFIG_HW_RANDOM_AMD=y
> CONFIG_HW_RANDOM_GEODE=y
> CONFIG_HW_RANDOM_VIA=y

No, I think they are for special hardware randoem generators only. I don't 
heve those enabled in my .config.

	Wonko

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Re: [gentoo-user] PRNG is not seeded

[Dale]

Alex Schuster wrote:
> Roger Mason writes:
>
>   
>> Alex Schuster <wonko@wonkology.org> writes:
>>     
> [/dev/random, /dev/urandom]
>   
>>> Does anyone know what exactly creates these device nodes and why it
>>> could fail?
>>>       
>> Some kernel option?
>>
>> grep RANDOM /usr/src/linux/.config
>> CONFIG_HW_RANDOM=y
>> CONFIG_HW_RANDOM_INTEL=y
>> CONFIG_HW_RANDOM_AMD=y
>> CONFIG_HW_RANDOM_GEODE=y
>> CONFIG_HW_RANDOM_VIA=y
>>     
>
> No, I think they are for special hardware randoem generators only. I don't 
> heve those enabled in my .config.
>
> 	Wonko
>
>   

I don't have those either.

root@smoker / # grep RANDOM /usr/src/linux/.config
# CONFIG_HW_RANDOM is not set
root@smoker / #


Not sure where that device comes from.  I do have them on my system tho.

Dale

:-)  :-)
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Re: [gentoo-user] PRNG is not seeded

[Florian Philipp]

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On Wed, 2008-03-26 at 23:24 +0530, Kaushal Shriyan wrote:
> On Wed, Mar 26, 2008 at 9:46 PM, Neil Bothwick <neil@digimed.co.uk>
> wrote:
>         On Wed, 26 Mar 2008 21:17:07 +0530, Kaushal Shriyan wrote:
>         
>         > when i restart sshd I get PRNG is not seeded
>         >
>         > # /etc/init.d/sshd restart
>         > PRNG is not seeded
>         
>         
>         Does /dev/urandom exist? What are it's permissions?
>         
>         
>         --
>         Neil Bothwick
>         
>         Never eat more than you can lift.
> 
> Hi
> 
> Thanks for the clue,
> 
> Both the files /dev/random and /dev/urandom are missing in my system. 
> 
> How do i go ahead in fixing this issue
> 
> Thanks and Regards
> 
> Kaushal
> 

I'm not sure if this is a permanent solution because /dev is a tmpfs
created by udev on startup (maybe there is your problem?) but you could
try

mknod -m 444 /dev/random c 1 8
mknod -m 444 /dev/urandom c 1 9

Both commands are taken from Linux from Scratch.

There is a static /dev lying on your root-partition. It should have been
created when you extracted your stage3-tarball during installation.
Maybe there is something wrong with that one and udev doesn't create
(u)random when they are not in the static one. To see the static /dev
you must unmount /dev, which you can only do from a live-cd.

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Re: [gentoo-user] PRNG is not seeded

[Neil Bothwick]

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On Thu, 27 Mar 2008 18:38:15 +0100, Florian Philipp wrote:

> To see the static /dev
> you must unmount /dev, which you can only do from a live-cd.

That's not true, you can also see it by bind mounting root somewhere else.

mount -bind / /mnt
ls -l /mnt/dev


-- 
Neil Bothwick

If you're not part of the solution, you're part of the precipitate. *
Wright

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