Re: [libvirt] [PATCH 2/2] conf: network user/direct/hostdev do not support backend tag.

The tag backend is not supported for user/direct/hostdev network when you try to define them inside the domain XML. So, other ways to include devices cannot be permitted too. But the attach-device command is wrongly adding unsupported features. This commit fixes this bug. After the patch: virsh # attach-device rhel7.4 backend.xml error: Failed to attach device from backend.xml error: unsupported configuration: Custom tap device path is not supported for: user Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1480251 Signed-off-by: Julio Faracco <jcfaracco(a)gmail.com&gt; --- src/conf/domain_conf.c | 10 ++++++++++ tests/qemuxml2argvtest.c | 6 +++--- 2 files changed, 13 insertions(+), 3 deletions(-) diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c index 0f306b7..2842533 100644 --- a/src/conf/domain_conf.c +++ b/src/conf/domain_conf.c @@ -10518,6 +10518,16 @@ virDomainNetDefParseXML(virDomainXMLOptionPtr xmlopt, } else if (virXMLNodeNameEqual(cur, "backend")) { char *tmp = NULL; + /* user/direct/hostdev do not support backend */ + if (def->type == VIR_DOMAIN_NET_TYPE_USER || + def->type == VIR_DOMAIN_NET_TYPE_DIRECT || + def->type == VIR_DOMAIN_NET_TYPE_HOSTDEV) { + virReportError(VIR_ERR_CONFIG_UNSUPPORTED, + _("Custom tap device path is not supported for: %s"), + virDomainNetTypeToString(def->type)); + goto error; + } + if ((tmp = virXMLPropString(cur, "tap"))) def->backend.tap = virFileSanitizePath(tmp); VIR_FREE(tmp);