--On November 8, 2007 3:46:16 PM -0800 Russ Allbery <[EMAIL PROTECTED]>
wrote:
Jim Rees <[EMAIL PROTECTED]> writes:
It sounds like what you want is for the kernel to keep track not only of
the files and directories you have open, but the paths by which you got
to them. Not impossible, but I think it would require changes to the
kernel outside afs. And it would change the semantics of the file
system.
I'll admit that what you've seen can be surprising. That's why most
file systems prohibit loops. It would be nice if afs could do this but
it would be hard to implement. And if we did, you would lose your
/afs/mw shortcut.
The issue is with multiple paths to the same directory, which doesn't
require a loop.
Well I can certainly use it to traverse into that other users homedir,
tokens permitting when getcwd is returning the longer/incorrect path for
var...
EG:
(chrooted into ...u/m/mloftis)
updog:/# ls -la
ls: .yesterday: Connection timed out
total 234
drwxrwxrwx 15 mloftis mloftis 2048 Nov 8 17:00 .
drwxrwxrwx 15 mloftis mloftis 2048 Nov 8 17:00 ..
-rw-rw-rw- 1 mloftis 501 82 Jun 20 21:03 ._skelloutscript
-rw-rw-rw- 1 1 501 82 Jul 20 16:40 ._staff_afs.txt
drwx------ 2 mloftis mloftis 2048 Jul 24 14:46 .aptitude
........
updog:/# cd var
updog:/var# /bin/pwd
/afs/modwest.com/u/j/jslife/var
updog:/var# ls -la tsets/
total 92
drwxrwxrwx 8 3680 3685 2048 Nov 8 12:53 .
drwxrwxrwx 2 root root 43008 Jul 30 16:54 ..
drwx------ 2 3680 36805 2048 Oct 9 15:32 .aptitude
-rw------- 1 3680 36805 2080 Oct 5 10:01 .bash_history
-rw-r--r-- 1 3680 3685 220 May 25 12:54 .bash_logout
-rw-r--r-- 1 3680 3685 414 May 25 12:54 .bash_profile
-rw-r--r-- 1 3680 3685 2224 Oct 5 09:58 .bashrc
drwx------ 2 3680 36805 2048 Oct 5 11:48 .gnupg
......
updog:/var# stat tsets
File: "tsets" -> "../"
Size: 3 Blocks: 2 IO Block: 4096 Symbolic Link
Device: 13h/19d Inode: 15339296 Links: 1
......
Does the same problem happen with bind mounts? And if not, can we use
whatever solution was used for bind mounts to fix this problem?
--
Russ Allbery ([EMAIL PROTECTED]) <http://www.eyrie.org/~eagle/>
--
"Genius might be described as a supreme capacity for getting its possessors
into trouble of all kinds."
-- Samuel Butler
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