From: Sape Mullender <sape@plan9.bell-labs.com>
To: 9fans@cse.psu.edu
Subject: Re: [9fans] FS question
Date: Mon, 10 Nov 2003 12:49:16 -0500 [thread overview]
Message-ID: <e323cbf7b4ac58703d2f1833f52202ac@plan9.bell-labs.com> (raw)
In-Reply-To: <E1AJG4G-000OkU-1v@t40.swtch.com>
>> Why was putting the name in the metat good in 1987 but bad
>> in 1969?
>
> I don't think it was bad in 1969. I think it just didn't
> happen that way.
Indeed. In 1969, directory entries consisted of a (14 character) name and a
(16 bit) inode number. Multiple directory entries could refer to the same
inode: links. Inodes had a reference-count that kept track of the number of
directories pointing to an inode. (the command ncheck would check/fix these
counts).
Symbolic links came much later (in BSD if I remember correctly) and, in early
symbolic links, a single data block would be sacrificed for storing the name linked
to. The name was still not in the inode metadata.
next prev parent reply other threads:[~2003-11-10 17:49 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-11-10 14:01 Brantley Coile
2003-11-10 15:07 ` Russ Cox
2003-11-10 17:14 ` Brantley Coile
2003-11-10 17:43 ` Russ Cox
2003-11-10 17:49 ` Sape Mullender [this message]
2003-11-11 1:47 ` Dennis Ritchie
2003-11-11 0:01 ` Geoff Collyer
2003-11-13 0:10 ` Charles Forsyth
2003-11-10 16:40 ` Rob Pike
2003-11-10 17:09 ` Brantley Coile
2003-11-10 17:39 ` ron minnich
2003-11-11 2:30 bruce
2003-11-11 10:26 ` Bruce Ellis
2003-11-11 12:28 ` Lucio De Re
2003-11-12 11:13 ` Boyd Roberts
2003-11-12 19:55 ` Andrew Simmons
2003-11-12 20:17 ` Brantley Coile
2003-11-12 21:18 ` boyd, rounin
2003-11-12 21:16 ` boyd, rounin
2003-11-13 9:32 ` Skip Tavakkolian
2003-11-13 16:47 ` Dan Cross
2003-11-14 6:49 Andrew Simmons
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