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SubjectRe: [RFC] symlink caching and network filesystems


On Mon, 7 Jun 1999, Erez Zadok wrote:

> I'm not sure this is relevant, but please ensure that there's a way for
> mount() to turn off such symlink caching. It's useful for my user-level
> hlfsd to turn off symlink caching, esp. over nfs. (Hlfsd creates a symlink
> that points to different places depending on the euid accessing the symlink;
> it's used to redirect /var/mail to users' home dirs.)

Wait a minute. Are you talking about the userland server + normal NFS
client combination? <scratching head> Hrrrmm... But READLINK in NFSv2 (and
IIRC in v3 too) doesn't pass credentials, right? Could you elaborate on
that?

> When symlink caching first showed up in solaris/sgi, they really messed up
> hlfsd, until there was a way to turn it off. Some bsd44 derivatives still
> have problems w/ turning off symlink caches that hlfsd cannot work on them.


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