Messages in this thread | | | Subject | Re: 2.3.30 linuxNFS import is broken (Screwed up NFS/RPC credentials) | Date | Wed, 22 Dec 1999 16:40:29 -0300 | From | Horst von Brand <> |
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Alexander Viro <viro@math.psu.edu> said:
[...]
> ... and? Suppose that users foo and bar are accessing the file. foo has > credentials alive and well, but bar got them revoked. Now, foo accesses a > piece of file. Data is read and cached. Into the inode's i_data. Where bar > can pick them without any calls to server. See the problem? We are > _already_ sharing the cache. And since file permissions are _not_ > range-based...
This is what happens with normal filesystems too: If I open the file, and you then remove my rights on it, I still can putz around. I won't be able to open it again, that's all. -- Dr. Horst H. von Brand mailto:vonbrand@inf.utfsm.cl Departamento de Informatica Fono: +56 32 654431 Universidad Tecnica Federico Santa Maria +56 32 654239 Casilla 110-V, Valparaiso, Chile Fax: +56 32 797513
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