[Harbour-users] Set Exclusive on CIFS mounted files

[Agustianes Umbara Suwardi]

On 03/03/2010 05:32 PM, Przemysław Czerpak wrote:
> On Wed, 03 Mar 2010, Agustianes Umbara Suwardi wrote:
>
> Hi,
>
>    
>> Has anyone tried to exclusive-use on CIFS mounted files with
>> Harbour? I have a CIFS mount point:
>> mount -t cifs -o rw,sync,user=ptiuser,password=secret,uid=1000,gid=1000,noperms,directio
>> //192.168.20.1/ptiuser/dbf /mnt/dbf
>>
>> As a test, I run on computer A a foxpro (under dosemu) script that
>> use a dbf as exclusive. Then on my computer I write a harbour app
>> that use the same file exclusively. The result is both computer can
>> use the file in the same time!
>>      
> Your problem has nothing to CIFS volumes.
>
> In POSIX systems like Linux DOS DENY flags (EXCLUSIVE mode) do not exist.
> DOSEMU emulates them only and such emulation is visible and respected only
> by programs executed in DOSEMU. The exception is when inside DOSEMU you
> are running network client which connects to file server directly instead
> of using LREDIR volumes. In such case DOSEMU sends information about the
> DOS DENY flags to file server which can manage them and synchronize other
> clients.
>
>    
>> The second test, on my computer I use the file exclusively under
>> foxpro (on dosemu). And the set exclusive command takes effect, the
>> file is used exclusively.
>> Is it a bug on harbour, or I'm passing the wrong mount parameters?
>>      
> It's not a bug. Read above. You are simply making sth what cannot work
> with programs executed outside DOSEMU.
>
> best regards,
> Przemek
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>    

Hi Przemek,

Thank you for your reply. So, is there any way I can make set exclusive 
work under Linux?

Best regards,
Agustianes U. S.