SELinux ntfs-mount context

[chritallic]

Does nobody have a suggestion? I still cannot get the ntfs files to have
a proper context.

On 10.06.2012 15:27, chritallic wrote:
> Hey there,
> 
> I have a problem with an ntfs partition and it’s selinux context.
> 
> First of all I use the ntfs partition to store all my data. This
> includes openvpn secrets. But as the ntfs gets a
> system_u:object_r:fusefs_t:s0 context, selinux prevents openvpn from
> opening the certificate.
> 
>> type=AVC msg=audit(1339236971.22:90): avc:  denied  { read } for  pid=1689 comm="openvpn" name="mycert.crt" dev="sda5" ino=1729 scontext=system_u:system_r:openvpn_t:s0 tcontext=system_u:object_r:fusefs_t:s0 tclass=file
> 
> Now, instead of allowing every single app to access fusefs_t, I’d rather
> like to give the files the right context. Changing the context, however,
> doesn’t seem to be possible on ntfs:
> 
>> $ chcon -t "default_t" /data
>> chcon: failed to change context of `/data' to `system_u:object_r:default_t:s0': Operation not supported
> 
> I then tried to mount the partition using the context option. But that
> did work either:
> 
>> $ mount -o context="system_u:object_r:user_home_t:s0" /dev/sda5 /data
>> ntfs-3g-mount: mount failed: Invalid argument
>> $ mount -o context="system_u:object_r:user_home_t:s0",default /dev/sda5 /data
>> ntfs-3g-mount: mount failed: Invalid argument
> 
> Oddly enough, another user reported this syntax to work in the thread
> “[OT] how to share a directory under ntfs mount point with selinux
> enabled?“:
> 
>> OK. Walking through other documents I found that the "correct" syntax
>> is with a ":s0" at the end of the option, and also add defaults at the
>> end, like:
>>
>> context=system_u:object_r:samba_share_t:s0,defaults
>>
>> This way I can correctly mount a share against a directory under the ntfs tree
> 
> Does anybody now how to mount the partition correctly? Or even better:
> is there a possibility to set the context of ntfs files?
> 
> Thanks,
> chritallic
> 
> PS: I’m new to selinux, so my apologies if there is something really
> dumb in here. ;-)
>