Permisssions NT-*nix

English Install/Boot/Login
1

System
HDD0 Vista, HDD1 OpenSuSE 11.1, HDD2 Data (NTFS).
Question?

Does permissions assigned under one OS effect ACL’s under the other?

To enable user write on the Data drive I # chmod 774 /Windows/D . No problems there. Now I can safely download movies and music under SuSE and then bounce the file over to the Data drive. So its accesable under both OS’s. and the rest of the Fam can access it regardlesss of wich OS I am in. It is also a SMB share.

can either OS impact on permissions assigned by the other or are they inherited each time you boot into that OS? Of course the initial permissions exist when you first try and access the volume under a new OS.But does modifying them impact the parent OS ACL’s. Example- if I were to # chmod -r 400 /windows/D would that make the volume inaccesable under Vista? Even though its an NTFS volume?

2

I think it’s like this:

NTFS filesystems in Linux mounted with ntfs-3g are unalterably set by the mount command. Thereafter any chmod command will not alter the permissions (including r and w) on the contained files.

So if you chmod the containing folder (the mount point) nothing changes for a mount point of NTFS (mounted via ntfs-3g).

These permissions do not carry through to the windows operating system, so the acls there when you attach the partition into a windows operating system are just as they always are for NTFS in windows, namely world writeable.

3

thanks swerdna. I was gonna experiment but was a little nervous about locking out an entire drive.
Your response makes sense…