static int
qemuPrepareHostUSBDevices(struct qemud_driver *driver,
virDomainDefPtr def)
{
int i, ret = -1;
usbDeviceList *list;
usbDevice *tmp;
virDomainHostdevDefPtr *hostdevs = def->hostdevs;
int nhostdevs = def->nhostdevs;
/* To prevent situation where USB device is assigned to two domains
* we need to keep a list of currently assigned USB devices.
* This is done in several loops which cannot be joined into one big
* loop. See qemuPrepareHostdevPCIDevices()
*/
if (!(list = usbDeviceListNew()))
goto cleanup;
/* Loop 1: build temporary list
*/
for (i = 0 ; i < nhostdevs ; i++) {
virDomainHostdevDefPtr hostdev = hostdevs[i];
usbDevice *usb = NULL;
if (hostdev->mode != VIR_DOMAIN_HOSTDEV_MODE_SUBSYS)
continue;
if (hostdev->source.subsys.type != VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_USB)
continue;
unsigned vendor = hostdev->source.subsys.u.usb.vendor;
unsigned product = hostdev->source.subsys.u.usb.product;
unsigned bus = hostdev->source.subsys.u.usb.bus;
unsigned device = hostdev->source.subsys.u.usb.device;
if (vendor && bus) {
usb = usbFindDevice(vendor, product, bus, device);
} else if (vendor && !bus) {
usbDeviceList *devs = usbFindDeviceByVendor(vendor, product);
if (!devs)
goto cleanup;
if (usbDeviceListCount(devs) > 1) {
virReportError(VIR_ERR_OPERATION_FAILED,
_("multiple USB devices for %x:%x, "
"use <address> to specify one"), vendor, product);
usbDeviceListFree(devs);
goto cleanup;
}
usb = usbDeviceListGet(devs, 0);
usbDeviceListSteal(devs, usb);
usbDeviceListFree(devs);
hostdev->source.subsys.u.usb.bus = usbDeviceGetBus(usb);
hostdev->source.subsys.u.usb.device = usbDeviceGetDevno(usb);
} else if (!vendor && bus) {
usb = usbFindDeviceByBus(bus, device);
}
if (!usb)
goto cleanup;
if (usbDeviceListAdd(list, usb) < 0) {
usbFreeDevice(usb);
goto cleanup;
}
}
/* Mark devices in temporary list as used by @name
* and add them do driver list. However, if something goes
* wrong, perform rollback.
*/
if (qemuPrepareHostdevUSBDevices(driver, def->name, list) < 0)
goto cleanup;
/* Loop 2: Temporary list was successfully merged with
* driver list, so steal all items to avoid freeing them
* in cleanup label.
*/
while (usbDeviceListCount(list) > 0) {
tmp = usbDeviceListGet(list, 0);
usbDeviceListSteal(list, tmp);
}
ret = 0;
cleanup:
usbDeviceListFree(list);
return ret;
}
static int
qemuPrepareHostUSBDevices(struct qemud_driver *driver,
virDomainDefPtr def,
bool coldBoot)
{
int i, ret = -1;
usbDeviceList *list;
usbDevice *tmp;
virDomainHostdevDefPtr *hostdevs = def->hostdevs;
int nhostdevs = def->nhostdevs;
/* To prevent situation where USB device is assigned to two domains
* we need to keep a list of currently assigned USB devices.
* This is done in several loops which cannot be joined into one big
* loop. See qemuPrepareHostdevPCIDevices()
*/
if (!(list = usbDeviceListNew()))
goto cleanup;
/* Loop 1: build temporary list
*/
for (i = 0 ; i < nhostdevs ; i++) {
virDomainHostdevDefPtr hostdev = hostdevs[i];
bool required = true;
usbDevice *usb;
if (hostdev->mode != VIR_DOMAIN_HOSTDEV_MODE_SUBSYS)
continue;
if (hostdev->source.subsys.type != VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_USB)
continue;
if (hostdev->startupPolicy == VIR_DOMAIN_STARTUP_POLICY_OPTIONAL ||
(hostdev->startupPolicy == VIR_DOMAIN_STARTUP_POLICY_REQUISITE &&
!coldBoot))
required = false;
if (qemuFindHostdevUSBDevice(hostdev, required, &usb) < 0)
goto cleanup;
if (usb && usbDeviceListAdd(list, usb) < 0) {
usbFreeDevice(usb);
goto cleanup;
}
}
/* Mark devices in temporary list as used by @name
* and add them do driver list. However, if something goes
* wrong, perform rollback.
*/
if (qemuPrepareHostdevUSBDevices(driver, def->name, list) < 0)
goto cleanup;
/* Loop 2: Temporary list was successfully merged with
* driver list, so steal all items to avoid freeing them
* in cleanup label.
*/
while (usbDeviceListCount(list) > 0) {
tmp = usbDeviceListGet(list, 0);
usbDeviceListSteal(list, tmp);
}
ret = 0;
cleanup:
usbDeviceListFree(list);
return ret;
}
static int
qemuPrepareHostUSBDevices(struct qemud_driver *driver,
virDomainDefPtr def)
{
return qemuPrepareHostdevUSBDevices(driver, def->name, def->hostdevs, def->nhostdevs);
}
