From: Adam Sampson <azz@us-lot.org>
To: linux-kernel@vger.kernel.org
Subject: Re: FS: hardlinks on directories
Date: Mon, 04 Aug 2003 17:11:17 +0100 [thread overview]
Message-ID: <y2aznips8re.fsf@cartman.at.fivegeeks.net> (raw)
In-Reply-To: <20030804170506.11426617.skraw@ithnet.com> (Stephan von Krawczynski's message of "Mon, 4 Aug 2003 17:05:06 +0200")
Stephan von Krawczynski <skraw@ithnet.com> writes:
> All that can handle symlinks already have the same problem
> nowadays. Where is the difference?
lstat() will tell you if a file is a symlink; if you only walk into
directories, then you're guaranteed not to get into a loop. If you've
got two hardlinks to a directory, how do you make that available in
stat() output, and how does a tree-walking program know which to walk
into? You could do the rsync trick of keeping track of every
device-inode pair you've seen to detect hardlinks, but that's horribly
non-space-efficient on large directories -- particularly bad for
backups.
I could imagine this functionality maybe being useful for system
administrators, but with normal Unixish userspace, it doesn't strike
me as a good idea to give users the ability to create hardlinks to
directories.
--
Adam Sampson <azz@us-lot.org> <http://offog.org/>
next prev parent reply other threads:[~2003-08-04 16:11 UTC|newest]
Thread overview: 79+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-08-04 12:15 FS: hardlinks on directories Stephan von Krawczynski
2003-08-04 12:45 ` Måns Rullgård
2003-08-04 13:22 ` Stephan von Krawczynski
2003-08-04 13:37 ` Christian Reichert
2003-08-04 13:44 ` Stephan von Krawczynski
2003-08-04 14:22 ` Christian Reichert
2003-08-04 15:31 ` Jeff Muizelaar
2003-08-04 16:15 ` Stephan von Krawczynski
2003-08-05 2:45 ` Neil Brown
2003-08-05 9:41 ` Stephan von Krawczynski
2003-08-06 1:12 ` Neil Brown
2003-08-06 10:14 ` Stephan von Krawczynski
2003-08-07 2:27 ` Neil Brown
2003-08-04 12:47 ` Nikita Danilov
2003-08-04 13:32 ` Stephan von Krawczynski
2003-08-04 13:44 ` Andries Brouwer
2003-08-04 13:56 ` Stephan von Krawczynski
2003-08-04 14:04 ` Anton Altaparmakov
2003-08-04 14:50 ` Stephan von Krawczynski
2003-08-04 20:03 ` Olivier Galibert
2003-08-04 21:16 ` Jesse Pollard
2003-08-04 23:34 ` Stephan von Krawczynski
2003-08-05 14:20 ` Jesse Pollard
2003-08-05 14:44 ` Stephan von Krawczynski
2003-08-04 22:58 ` Andrew Pimlott
2003-08-05 0:19 ` Stephan von Krawczynski
2003-08-05 1:18 ` Andrew Pimlott
2003-08-05 8:04 ` Stephan von Krawczynski
2003-08-05 11:18 ` Wakko Warner
2003-08-04 14:33 ` Jesse Pollard
2003-08-04 15:05 ` Stephan von Krawczynski
2003-08-04 15:57 ` Richard B. Johnson
2003-08-04 21:23 ` Jesse Pollard
2003-08-04 16:11 ` Adam Sampson [this message]
2003-08-04 17:00 ` Hans Reiser
2003-08-04 17:18 ` Sean Neakums
2003-08-05 4:53 ` jw schultz
2003-08-04 18:50 ` jlnance
2003-08-04 21:09 ` Jesse Pollard
2003-08-04 22:13 ` Stephan von Krawczynski
2003-08-04 22:32 ` Stephan von Krawczynski
2003-08-04 23:00 ` Randolph Bentson
2003-08-05 0:10 ` Stephan von Krawczynski
2003-08-05 2:09 ` Edgar Toernig
2003-08-05 8:05 ` Stephan von Krawczynski
2003-08-05 12:51 ` Helge Hafting
2003-08-05 13:03 ` Stephan von Krawczynski
2003-08-05 13:13 ` Bernd Petrovitsch
2003-08-05 13:39 ` Stephan von Krawczynski
2003-08-05 13:36 ` Richard B. Johnson
2003-08-05 14:04 ` Stephan von Krawczynski
2003-08-05 14:57 ` Richard B. Johnson
2003-08-05 15:08 ` Stephan von Krawczynski
2003-08-05 15:02 ` Jesse Pollard
2003-08-05 15:12 ` Stephan von Krawczynski
2003-08-05 15:44 ` Trond Myklebust
2003-08-05 14:56 ` Jesse Pollard
2003-08-05 22:08 ` Helge Hafting
2003-08-24 17:35 ` Hans Reiser
2003-08-24 19:02 ` Helge Hafting
2003-08-25 8:27 ` Nikita Danilov
2003-08-25 15:48 ` Hans Reiser
2003-08-05 14:12 ` Jesse Pollard
2003-08-05 14:21 ` Stephan von Krawczynski
2003-08-05 15:53 ` Herbert Pötzl
2003-08-04 20:47 ` Jan Harkes
2003-08-04 15:42 ` Brian Pawlowski
2003-08-04 15:56 ` Stephan von Krawczynski
2003-08-04 16:16 ` Herbert Pötzl
2003-08-04 16:35 ` Stephan von Krawczynski
2003-08-04 16:54 ` Herbert Pötzl
2003-08-04 17:18 ` Stephan von Krawczynski
2003-08-04 17:25 ` Herbert Pötzl
2003-08-04 21:38 ` Jesse Pollard
2003-08-05 0:06 ` Stephan von Krawczynski
2003-08-05 3:11 ` Neil Brown
2003-08-04 21:29 ` Jesse Pollard
2003-08-04 23:42 ` Stephan von Krawczynski
2003-08-05 16:46 ` viro
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