[libvirt] Regression in allocating ports for serial/parallel devs

Hi Michal, The following commit introduced a regression: http://libvirt.org/git/?p=libvirt.git;a=commit;h=79c3fe4d1681cd94598d2bd4... Now, defining a guest with XML like <serial type='pty'/> <serial type='null'/> <serial type='stdio'/> Will allocate <target port='0'/> to all 3. The reason is that target.port is never set to -1 unless the user specified some <target> XML. A simple fix is: --- a/src/conf/domain_conf.c +++ b/src/conf/domain_conf.c @@ -3265,6 +3265,8 @@ virDomainChrDefParseXML(virCapsPtr caps, return NULL; } + def->target.port = -1; + type = virXMLPropString(node, "type"); if (type == NULL) { def->source.type = VIR_DOMAIN_CHR_TYPE_PTY; But that doesn't solve the problem for users who are building ChrDef's by hand, like when converting between formats as xen and vmware drivers do. I didn't look at those users so they may be safe, but the interface should be improved. Maybe add a ChrDefNew function that sets the -1 default. Additionally we should add a qemuxml2xml test for this to prevent against future regressions. Thanks, Cole