Re: [Xen-devel] [PATCH] hotplug: network-bridge: fix for interfaces with no gateway

[Ian Campbell <Ian.Campbell@xxxxxxxxxx>]

Any objects/acks for this patch?

On Tue, 2012-07-10 at 00:42 +0100, Ian Campbell wrote:
> # HG changeset patch
> # User Ian Campbell <ian.campbell@xxxxxxxxxx>
> # Date 1341877305 -3600
> # Node ID 310aa4c07d02168234a36e113a76d0d4eef373a7
> # Parent  1d33f934dd675a1b91d2d4e0fa2d2a873a8debf5
> hotplug: network-bridge: fix for interfaces with no gateway
> 
> This comes from an old Debian bug report
> http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=588477 which refers to
> http://lists.xen.org/archives/html/xen-users/2010-06/msg00420.html.
> 
> Although we no longer have a trap in _claim_lock as described (this was 
> removed
> in 25590:bb250383a4f5 "hotplug/Linux: use flock based locking") and the use of
> network-* scripts is discouraged (in favour of using distro provided
> mechanisms) the general principal that relying on the semantics of /bin/sh's 
> &&
> is unwise seems sound.
> 
> Signed-off-by: Ian Campbell <ian.campbel@xxxxxxxxxx>
> 
> diff -r 1d33f934dd67 -r 310aa4c07d02 tools/hotplug/Linux/network-bridge
> --- a/tools/hotplug/Linux/network-bridge      Tue Jul 10 00:14:54 2012 +0100
> +++ b/tools/hotplug/Linux/network-bridge      Tue Jul 10 00:41:45 2012 +0100
> @@ -115,7 +115,9 @@ do_ifup() {
>              ip addr add ${addr_pfx} dev $1
>          fi
>          ip link set dev $1 up
> -        [ -n "$gateway" ] && ip route add default via ${gateway}
> +        if [ -n "$gateway" ] ; then
> +            ip route add default via ${gateway}
> +        fi
>      fi
>  }
>  
> 
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