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interface: add udevIfaceIsActive() to udev backend

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Add support to check if a specific interface is active by supporting the
following API function in the udev based virInterface backend:
* virConnectInterfaceIsActive()
This commit is contained in:
Doug Goldstein 2012-10-06 14:20:29 -05:00 committed by Eric Blake
parent 43dbcb1541
commit ba96d277b0
1 changed files with 30 additions and 0 deletions
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30
src/interface/interface_backend_udev.c
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@ -489,6 +489,35 @@ err:
return ret;
}
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 it's 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 */
@ -500,6 +529,7 @@ static virInterfaceDriver udevIfaceDriver = {
.listAllInterfaces = udevIfaceListAllInterfaces, /* 0.10.3 */
.interfaceLookupByName = udevIfaceLookupByName, /* 0.10.3 */
.interfaceLookupByMACString = udevIfaceLookupByMACString, /* 0.10.3 */
.interfaceIsActive = udevIfaceIsActive, /* 0.10.3 */
};
int