Help with virtualbox shared folder permissions for ldap users/groups

[BarryDocks]

Really need some help to get the permissions sorted for ldap users on the guest OS to access the shared folders.

Here's the scenario:
Host: Ubuntu Server 10.04 LTS 64 bit with Virtual box 4.2.6
Guest: Ubuntu Server 10.04 LTS 32bit with Zentyal 2.2 & Guest Additions installed

I have a directory on the host shared with the guest. I want to use the shared folder as a smb share for the guest users. Permissions on the host directory are 777. Permissions on the guest VB shared folder are 770, owned by user root and group vboxsf - I can't change this.

The users on the guest are authenticated via ldap and all belong to the ldap group __USERS__

My question is, how do I add the ldap group __USERS__ to the local group vboxsf to allow them to access the shared directory? Alternatively, is there an automagical way to add new ldap users to the vboxsf group?

Thanks

[apos]

I have exact the same problem.

I found two things:

1. In the directory /media there are my shared folders listed with sf_shared_folder_name

2. I can mount my share manually with

share /data/share1 vboxsf uid=4,gid=1901,rw 0 0

where uid 4 = sync and gid 1901 = __USERS__

3. If I create a blank shared folder with zentyal, it gets the uid 4 and gid 1901 (sync, __USERS__).

The problem is that /data is a raid5 system on the host.
The zentyal machine is the guest.

Is this a general problem with mounted directories that are not part of the general filesystem?

What permissions do I need to handle shares? root?

Greets
Axel