[libvirt] [PATCH 2/2] domain_conf: add "default" to list of valid spice channels

Eric Blake eblake at redhat.com
Mon May 7 16:09:25 UTC 2012


On 05/07/2012 09:53 AM, Eric Blake wrote:
> On 05/07/2012 06:33 AM, Alon Levy wrote:
>> qemu's behavior in this case is to change the spice server behavior to
>> require secure connection to any channel not otherwise specified as
>> being in plaintext mode. libvirt doesn't currently allow requesting this
>> (via plaintext-channel=<channel name>).
>>
>> RHBZ: 819499
>>
>> Signed-off-by: Alon Levy <alevy at redhat.com>
>> ---
>>  src/conf/domain_conf.c |    3 ++-
>>  src/conf/domain_conf.h |    1 +
>>  2 files changed, 3 insertions(+), 1 deletion(-)
> 
> Same complaints as for 1/2 (docs, RNG schema, tests).  Also, is it ever
> valid to mark the default channel for plaintext (meaning all channels
> not marked secure are plaintext), or must it only be permitted for
> secure channels?

Here's one of the existing tests:
tests/qemuxml2argvdata/qemuxml2argv-graphics-spice.xml

   <graphics type='spice' port='5903' tlsPort='5904' autoport='no'
listen='127.0.0.1'>
      <listen type='address' address='127.0.0.1'/>
      <channel name='main' mode='secure'/>
      <channel name='inputs' mode='insecure'/>

I'm wondering if rather than adding a new <channel name='default'
mode='.../'>, it might make more sense to hoist the default channel
security mode up one element.  Something like:

<graphics type='spice' default_mode='secure' ...>
  <channel name='main' mode='secure'/> <!-- redundant -->
  <channel name='inputs' mode='insecure'/> <!-- override default -->
  <channel name='usbredir'/> <!-- defaults to secure due to <graphics> -->

While it is obvious that usbredir must be a valid channel name, it's not
as obvious about 'default' being a channel name (since it is really more
of the catchall for all other channels not explicitly listed).

-- 
Eric Blake   eblake at redhat.com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org

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