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Date: Tue, 6 Sep 2005 20:59:46 +0530
From: "Kamal R. Prasad" <kamalpr@gmail.com>
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Cc: freebsd-hackers@freebsd.org, Robert Watson <rwatson@freebsd.org>,
	Sergey Uvarov <uvarovsl@mail.pnpi.spb.ru>
Subject: Re: vn_fullpath() again
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>=20
> [snip]

 =20
I did. You just don't get it. A file may be associated with zero,
> one or more names and none of these names are more correct or
> authoritative than any of the others. If a user does 'ln /bin/ls
> /tmp' (assuming /bin and /tmp are on the same filesystem), it may be
> obvious to you that /bin/ls is the "real name" is /tmp/ls is just an
> alias, but it is not obvious to the kernel. In fact, the kernel is
> unable to see any difference at all between these two names.

 Yes -but when a user requests a mapping of vnode to pathname, he is asking=
=20
in the context of files he has accessed (recently). In this context, the=20
name cache does suffice -but unfortunately not every unix variant provides=
=20
access to it.
 regards
-kamal