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Date: Sun, 15 Dec 2002 00:41:06 +0000
From: Andrew Walrond <andrew@walrond.org>
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To: Stephen Wille Padnos <stephen.willepadnos@verizon.net>
CC: linux-kernel@vger.kernel.org
Subject: Re: Symlink indirection
References: <200212141355.gBEDtb7q000952@darkstar.example.net> <3DFB3983.3090602@walrond.org> <3DFB8B7C.10802@verizon.net>
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Hi steve

Stephen Wille Padnos wrote:
> 
> What would you expect to happen if you then did:
> echo "d/w" > d/w
> 
> Which physical directory would you expect a new file to go into?
> 

Using my example:

mkdir a
echo "a/x" > a/x
echo "a/y" > a/y
echo "a/z" > a/z

mkdir b
echo "b/y" > b/y

mkdir c
echo "c/z" > c/z

mkdir d
mount --bind a d
mount --bind --overlay b d
mount --bind --overlay c d

cat d/x
"a/x"

cat d/y
"b/y"

cat d/z
"c/z"

Then...

echo "d/w" > d/w would create a new file in directory a.
echo "d/y" > d/y would replace the file b/y
etc...

Is this sort of thing possible, or are there fundamental reasons that 
would make it difficult?

Andrew

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