Re: [Xen-devel] [RFC] Is this process running on which machine?

[Akio Takebe <takebe_akio@xxxxxxxxxxxxxx>]

Hi, Ewan and all

Thank you for your comments.
I remake my scripts.

I tested on dom0,domU,HVM(x86),native.
Are there any other comments or suggestions?

=================================================================
#!/bin/bash

if [ -d /proc/xen ] ; then
        if $(grep -q control_d /proc/xen/capabilities); then
                echo "this is dom0."
        else
                echo "this is domU."
        fi
else
        IS_X86HVM="$(strings /proc/acpi/dsdt | grep int-xen)"
        if [ x"${IS_X86HVM}" != x ]; then
                echo "this is x86 hvm machine"
        else
                echo "this is native machine"
        fi
fi
=================================================================

Best Regards,

Akio Takebe

>On Sat, Nov 18, 2006 at 06:10:57PM +0900, Akio Takebe wrote:
>
>> Hi, all
>> 
>> I'd like to know "Is this process running on which machine?"
>> For example, a native machien, or dom0, or domU, or HVM..
>> 
>> So I research codes of xen,
>> then I make the following shell.
>> (I haven't confirmed HVM yet because I don't use VTx machine.)
>> What do you think about it?
>> 
>> =========================================================================
>> #!/bin/bash
>> 
>> if [ -d /sys/hypervisor ] ; then
>>         UUID=$(cat /sys/hypervisor/uuid)
>>         if [ x"$UUID" == x"00000000-0000-0000-0000-000000000000" ]; then
>>                 echo "this is dom0."
>>         else
>>                 echo "this is domU."
>>         fi
>> else
>>         IS_HVM=$(strings /proc/acpi/dsdt | grep -i xen)
>>         if [ x"IS_HVM" != x ]; then
>>                 echo "this is hvm machine"
>>         else
>>                 echo "this is native machine"
>>         fi
>> fi
>
>I wouldn't rely upon the UUID of domain 0 being all-zeros -- there have
>been arguments about that in the past.
>
>The proper mechanism for doing this is
>
>grep -q "control_d" /proc/xen/capabilities
>
>This will be true if you are in the "initial control domain"
>(SIF_INITDOMAIN has been set).
>
>Ewan.
>
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