[Samba] Multiple Groups Assigned to a File

[Buchan Milne]

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> Message: 14
> From: Noel Kelly <nkelly at citrusnetworks.net>
> To: 'Jess Cannata' <doubtful500 at hotmail.com>, samba at lists.samba.org
> Subject: RE: [Samba] Multiple Groups Assigned to a File
> Date: Wed, 6 Nov 2002 15:07:33 -0000
>
>
>> -----Original Message-----
>> From: Jess Cannata [mailto:doubtful500 at hotmail.com]
>> Sent: 06 November 2002 14:28
>> To: samba at lists.samba.org
>> Subject: [Samba] Multiple Groups Assigned to a File
>>
>>
>> I'm new to this group so I hope that this is the right place to ask this
>> question (if not, let me know):
>>
>> We are setting up several Samba servers and we've run into a problem
with
>> file permissions. We've have a few shared folders that we'd like for
some
>> GROUPS to have read/write access and other GROUPS to have only read
access.
>> I cannot figure out how to do this because Linux/Unix seems to have the
>> limitation that a file can only be owned by one user and one group,
and the
>> permissions are only applicable to the owner (user and group). Is
there a
>> way to assign more than one group to a file, and make it so the
different
>> groups have different permissions (Like NDS and Microsoft do)? If
not, how
>> do people get around this?
>>
>> Thanks for any help.

> Should have added that if you want more sophisticated (and therefore more
> complex administration) permissions then you can use ACLs.  However at the
> moment this requires that you compile your kernel with ACL support using
> patches or grab an ACL enabled kernel/filesystem like XFS from SGI.
>

ACLs don't require that you recompile your kernel, just choose your
distro. ACLs (with support in samba) have worked out the box (on XFS) on
Mandrake since 8.1, and 9.0 also supports ACLs on ext2/ext3. With 2.4.19
kernels and later however, you need to mount any FS which uses ACLs with
the acl option before they will work, and this is not the default (since
it breaks LSB-copmliance).

I think SuSE also has ACL support, but I don't use it, so can't be sure.

Regards,
Buchan

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Buchan Milne                Mechanical Engineer, Network Manager
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