Re: qemu-bridge-helper issue

Laine Stump <laine@xxxxxxxxx> · Wed, 25 Jun 2014 15:51:01 +0300



    On 06/25/2014 03:28 PM, abhishek jain
      wrote:

    
            Hi Laine 

              
            I'm able to run the qemu-bridge-helper but with root
            authority.

          
          I need to run it with non-root user.How can i do that?

        
    The entire point of qemu-bridge-helper is that it can be run by
    non-privileged users, but once run it has root privileges. This is
    done by the binary having the "suid bit" set. If your distro didn't
    install it this way, that is a bug (an ls -l of the binary should
    show "rwsr-xr-x" permissions) . You can fix it with the chmod
    command (e.g. "chmod 4755 /usr/libexec/qemu-bridge-helper"). If that
    is what was broken, and you used the distro-built package, you
    should report it as a bug to the distro's bug tracking system.

    
    Beyond that, you need to read about the qemu-bridge-helper ACL file
    in the link I originally gave (along with other info you can find
    with a google search).

    
        Thanks 

      
        On Wed, Jun 25, 2014 at 5:43 PM, Laine
          Stump <laine@xxxxxxxxx>
          wrote:

          
              On 06/25/2014 10:22 AM, abhishek jain
                wrote:

                > Hi

                >

                > I'm able to run the below command using root
                permission....

                >

                >  sudo kvm -netdev
                bridge,br=qbr0ccdca50-fa,id=hostnet -M ppce500

                > Warning: netdev hostnet has no peer

                > Could not initialize SDL(No available video device)
                - exiting

                >

                >

                > However when I'm running the same command without
                root authority,I'm

                > getting following logs...

                >

                >  kvm -netdev bridge,br=qbr0ccdca50-fa,id=hostnet -M
                ppce500

                > failed to create tun device: Operation not
                permitted

                > failed to launch bridge helper

                > kvm: -netdev bridge,br=qbr0ccdca50-fa,id=hostnet:
                Device 'bridge'

                > could not be initialized

                >

                >

                > I need to run the above command without root
                authority.Please help

                > regarding this.

                
            Search for qemu-bridge-helper and you should find
            information about the

            ACL file that needs to be setup for this to work properly.
            For example,

            this has a short description, but doesn't sound like it's
            intended to be

            the final authority:

            
              http://wiki.qemu.org/Features/HelperNetworking

          
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