Re: [rtl] root id

[Ludwig Öfele <Ludwig.Oefele@Humantec.de>]

Hello Frederic!

I think, I had a similar problem after an update of Linux Kernel
(without RT). Your effective user id is 4294967295 which corresponds to
-1 if you look at it in 64-Bit-Terms. There seems to be a change of
semantics (-1 changed to 4294967295) in the system and now the rights of
user and the rights of files do not match any more. I can't explain it
any better, but maybe this gives you an advice.
I think, I fixed it by changing the id -1 in the groups or passwd file
to something more sensful ( (unsigned int32)(-1) = 65535 ?).

Have luck!

Ludwig Öfele, Humantec Industriesysteme

Frederic Cazenave wrote:
> 
> Last week I have posted a question concerning the lost of my root
> privilege
> after installing rtlinux modules. I can summary all my mail with hofrat
> ( Der Herr Hofrat <der.herr@hofr.at> ), thanks to him, as following :
> 
> I have installed this files :
>     521612 -rw-r--r--    1 root     root     19090206 Feb 14 20:56
> linux-2.2.18.tar.gz
>     521622 -rw-r--r--    1 root     root       450860 Feb 16 15:10
> rtlinux-3.0.tar.gz
> 
> then patch linux with  kernel_patch-2.2 and build the new rtlinux image
> 
> when I reboot my machine and logged as root my id is
> 
> [root@xport /root]# id
> uid=0(root) gid=0(root)
> groups=0(root),1(bin),2(daemon),3(sys),4(adm),6(disk),10(wheel)
> 
> After installing all the modules of rtlinux my effective id changes :
> 
> uid=0(root) gid=0(root) euid=4294967295
> groups=0(root),1(bin),2(daemon),3(sys),4(adm),6(disk),10(wheel)
> (here there is no possibility to bring down the system propely !!)
> 
> If I remove all the rt modules my id goes back to the original
> 
> uid=0(root) gid=0(root)
> groups=0(root),1(bin),2(daemon),3(sys),4(adm),6(disk),10(wheel)
> 
> Rigth now I didn't find any solution
> 
> Fred Cazenave
> 
> --
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> |                                                          |
> |               Frederic CAZENAVE                          |
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