I've been doing some mucking around with my Leopard 10.5.2 dev server
and came across something that I'd like to get feedback/verification
from other users. It seems that if you have a folder on a 10.5.2
sharepoint, shared via Samba, and the folder has (certain, common)
extended attributes, Vista users will get an error when they try to
download the folder. The error the Vista user will get is: "Error
0x800700FE: The specified extended attribute name was invalid."
To state it plainly, if you 1) have extended attributes on 2) a
directory that 3) has a colon in the attribute's key or value, Vista
will produce an error and prohibit downloading.
It's pretty easy to duplicate. Create a folder on your Mac OS X
desktop. Do a "get info" on the folder and type something in the
Spotlight metadata field. Now drag the folder to a share on your
Leopard server (using AFP). Over on your Vista workstation, try to
download it (obviously using SMB). It should invoke the above error.
If you do the same thing except substituting a file instead of a
folder, you should *not* get the error.
I figured this out from a VMWare virtual machine. The "file" called
ubuntu.vmwarevm on my Mac, was uploaded via AFP to a Leopard server. I
tried downloading it to a Vista client, and it balked. The
ubuntu.vmwarevm is actually a bundle or a package, an opaque
directory[1]. Here's its extended attribute, which tells Time Machine
not to back this up:
If I created a directory on my Vista machine, I could download the
components in the package, like the .vmx configuration file, virtual
hard drives, etc -- even though those files have the same EA.
Additionally, if I deleted the EA on the object, then added an EA with
something like "color" "red" via command line, so that the EA on the
directory doesn't have a colon, Vista doesn't complain. It's a legal
name for an EA.
The problem is, just about any EA created by Mac OS X will have a
colon in at least the key field, because it follows the reverse-DNS
convention and uses a colon to separate fields. Like Finder meta-
information for example;
[1] Curiously, other packages, like .mpkg files, are understood by
both Mac OS X and Vista as a true file, not an opaque directory.
VMWare virtual machines on the other hand -- directories that have
the .vmwarevm extension, gain the behavior of a bundle, so that you
can double-click on this directory and Fusion will launch.
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