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Re: [libvirt] [PATCH] send 'container=libvirt' in env to container init



On 05/16/2011 08:47 AM, Serge Hallyn wrote:
> This allows upstart scripts to detect that they are in a container
> and modify their behavior accordingly.
> 
> In this way, the same ubuntu maverick or natty image with the 'lxcguest'
> package installed can be booted on bare metal, in kvm, or as a
> libvirt or liblxc container.
> 
> Signed-off-by: Chuck Short <zulcss ubuntu com>
> Signed-off-by: Serge Hallyn <serge hallyn ubuntu com>
> ---
>  src/lxc/lxc_container.c |    1 +
>  1 files changed, 1 insertions(+), 0 deletions(-)
> 
> diff --git a/src/lxc/lxc_container.c b/src/lxc/lxc_container.c
> index 9ae93b5..a70aeeb 100644
> --- a/src/lxc/lxc_container.c
> +++ b/src/lxc/lxc_container.c
> @@ -112,6 +112,7 @@ static virCommandPtr lxcContainerBuildInitCmd(virDomainDefPtr vmDef)
>  
>      virCommandAddEnvString(cmd, "PATH=/bin:/sbin");
>      virCommandAddEnvString(cmd, "TERM=linux");
> +    virCommandAddEnvString(cmd, "container=libvirt");

POSIX reserves lowercase env names for the user.  Is upstart really
using a lower case name, or should this be an upper case name?

>      virCommandAddEnvPair(cmd, "LIBVIRT_LXC_UUID", uuidstr);
>      virCommandAddEnvPair(cmd, "LIBVIRT_LXC_NAME", vmDef->name);

Can upstart be taught to look for LIBIVRT_LXC_UUID instead?

-- 
Eric Blake   eblake redhat com    +1-801-349-2682
Libvirt virtualization library http://libvirt.org

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