Re: [PATCH] cowlinks v2
From: Jörn Engel
Date: Mon Apr 05 2004 - 03:44:38 EST
On Fri, 2 April 2004 20:23:58 +0200, Pavel Machek wrote:
>
> > Then you link()...
>
> INODE123 Usage count = 2, pointer to cowid 567
> COWID 567: Usage count = 3
> INODE124 Usage count = 2, pointer to cowid 567
> INODE125 Usage count = 2, pointer to cowid 567
>
> Now, if I write to any inode with has cowid, data have to be copied,
> and pointer to cowid deleted from that inode .
Ok, you win. Next time I get scare, I should ask you first. :)
In a single picture, links currently look like this:
Symlink can point to inodes or cowlinks or hardlinks
Hardlink can point to inodes or cowlinks
Cowlink can point to inodes
I like it.
Not sure about the current count, but it looks like most people favor
the indirect approach now.
Jörn
--
"Security vulnerabilities are here to stay."
-- Scott Culp, Manager of the Microsoft Security Response Center, 2001
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