[libvirt] [PATCH 5/5] interface: add udevIfaceIsActive() to udev backend

Add support to check if a specific interface is active by supporting the following API function in the udev based virInterface backend: * virConnectInterfaceIsActive() --- src/interface/interface_backend_udev.c | 30 ++++++++++++++++++++++++++++++ 1 files changed, 30 insertions(+), 0 deletions(-) diff --git a/src/interface/interface_backend_udev.c b/src/interface/interface_backend_udev.c index 2f37bed..82c8681 100644 --- a/src/interface/interface_backend_udev.c +++ b/src/interface/interface_backend_udev.c @@ -616,6 +616,35 @@ cleanup: return xmlstr; } +static int +udevIfaceIsActive(virInterfacePtr ifinfo) +{ + struct udev_iface_driver *driverState = ifinfo->conn->interfacePrivateData; + struct udev *udev = udev_ref(driverState->udev); + struct udev_device *dev; + int status; + + dev = udev_device_new_from_subsystem_sysname(udev, "net", + ifinfo->name); + if (!dev) { + virReportError(VIR_ERR_NO_INTERFACE, + _("couldn't find interface named '%s'"), + ifinfo->name); + status = -1; + goto cleanup; + } + + /* Check if its active or not */ + status = STREQ(udev_device_get_sysattr_value(dev, "operstate"), "up"); + + udev_device_unref(dev); + +cleanup: + udev_unref(udev); + + return status; +} + static virInterfaceDriver udevIfaceDriver = { "udev", .open = udevIfaceOpenInterface, /* 0.10.3 */ @@ -628,6 +657,7 @@ static virInterfaceDriver udevIfaceDriver = { .interfaceLookupByName = udevIfaceLookupByName, /* 0.10.3 */ .interfaceLookupByMACString = udevIfaceLookupByMACString, /* 0.10.3 */ .interfaceGetXMLDesc = udevIfaceGetXMLDesc, /* 0.10.3 */ + .interfaceIsActive = udevIfaceIsActive, /* 0.10.3 */ }; int -- 1.7.8.6