capabilities of samba/linux based network attached storage

Hi Steffen,

I am working on a network HDD storage solution, too. I have an
Iomega Network Hard Drive 160GB. You will see a post of mine in
this group about disappearing files.

But I am under the impression that it won't be possible to
assign any other rights to the contents of the share than those
you assign at mount time with the uid, gid, fmask, and dmask
options.

Quoting from the smbmnt (2.0.5a) man page:

" Lan Manager does not know anything about file
permissions, so smbmnt must be told which permis*
sions it should assign to the mounted files and
directories.

The values must be given as octal numbers. The default
values are taken from the current umask, where
the file mode is the current umask, and the dir mode
adds execute permissions where the file mode gives
read permissions.

Note that these permissions can differ from the rights
the server gives to us. If you do not have write
permissions on the server, you should choose a
file mode that matches your actual permissions. This
certainly cannot override the restrictions imposed by
the server."

So, if you want to assign user rights on a SMB share, you have
to publish the share from a Windows "Kiste".

But even in the Windows context, assigning user rights to
individual files and directories is not possible, unless your
drive is NTFS formatted (Windows NT and higher).

Daniel

"y551025@gmail.com" wrote:[color=blue]
>
> I just bought a Western Digital Netcenter drive. This appears to have
> an embedded Linux serving Samba, accessible via browser. Western
> Digital doesn't claim any support for Linux clients, but from my
> Linux system:
> % nmblookup '*' -T
> gives its DHCP determined IP-address, and then Firefox access to
> [url]http://IP-address[/url]
> allows me to set up a private folder "foobar" with password "foopass".
> Then I can mount the Western Digital drive on my Linux machine with
> # mount -t smbfs -o password=foopass //WD-NETCENTER/foobar /mnt
>
> So at this point I thought I had a real winner. Unfortunately, all
> files copied to the NetCenter drive have their permissions transformed
> to rwxr-xr-x. The Linux commands chmod and chown don't work for the
> files I copy to the NetCenter drive.
>
> (smbclient also works:
> % smbclient //WD-NETCENTER/foobar foopass
> but commands like
> smb: \> chmod filename 700
> are rejected with messages such as
> Pushing string of 'unlimited' length into non-SMB buffer!
> NT_STATUS_ACCESS_DENIED chmod file \700 00 )
>
> I am a newbie to Samba. Do you think the WD NetCenter behavior I
> describe
> above is a limitation of Samba or a limited implementation of Samba on
> the WD NetCenter product?
> Any suggestions for workarounds would be very welcome.
> I imagine that I could use tar to make the WD NetCenter
> a simple backup device for my Linux system, but that would be a
> disappointingly restricted use.
>
> (By the way, I've gone through this exercise with a similar product,
> the Iomega 250GB Network Hard Drive. Iomega advertises that it _does_
> work with Linux clients. Setup proceeded much as above, however there
> was much the same problem with changing permissions. In fact, at
> [url]http://www.iomega.com/support/redirect/networkhdd.html[/url]
> under "more answers", Iomega's FAQ says:
> Question
> How do I set up network permissions for my Iomega¬Æ Network Hard
> Drive High-Speed Ethernet?
> Answer
> All computers connected to the LAN will have read/write access to
> all files stored on the Iomega Network Hard Drive.
> Currently, the Iomega Network Hard Drive does not have the ability
> to specify file or folder level permissions.
> So this looks more restrictive than the WD NetCenter drive.
>
> Thanks,
> -- Steffen[/color]

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