'li' sounds like a reasonable dropbox style directory permission, but with the nature of the GUIs we use today it's getting more and more difficult.

'li' doesn't work on XP but did on 2k
I had to add write permissions and make it 'liw' (which would allow folks to over write the file)... terrible but for simple classwork submissions it seemed like a good idea.


'liw' also worked on OSX 10.2... but now with 10.3 the nature of the beast has changed again!

Take a look at this:

$:/afs/cs.ttu.edu/classes/cs/1412/inbox chris$ fs listacl .
Access list for . is
Normal rights:
  cs1412:admin rlidwka
  system:administrators rlidwka
  system:anyuser liw

Now try and drag and drop a file into that folder (unauthenticated) and you get the following popup message and resulting files:

Copying "filename.txt" to "inbox"
The operation cannot be completed because you do not have sufficient privileges for some of the items.
(OK)


$:/afs/cs.ttu.edu/classes/cs/1412/inbox chris$ ls -la
total 574
drwxrwxrwx  4 daemon  staff    2048  1 Sep 16:02 .
drwxrwxrwx  5 root    wheel    2048  5 Feb  2004 ..
-rw-rw-rw-  1 32766   chris      82  1 Sep 16:02 ._osxworkshop.pdf
-rw-rw-rw-  1 32766   chris       0  1 Sep 16:02 osxworkshop.pdf

$:/afs/cs.ttu.edu/classes/cs/1412/inbox chris$ cat ._osxworkshop.pdf
2 RbrokMACS

It almost looks like it tries to create files or just touch them then try to fill them up. If I add read permissions everything works fine.... but then everystudent could read anything in the 'write only' drop box for homework submission.

Any thoughts or suggestions on the subject?

--
Chris McClimans  / CCIE Security #11041, CCNA, CCNP, MCSE
Director of Undergraduate Labs / Texas Tech Computer Science

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