int
qemuPrepareHostdevUSBDevices(virQEMUDriverPtr driver,
const char *name,
virUSBDeviceListPtr list)
{
int i, j;
unsigned int count;
virUSBDevicePtr tmp;
virObjectLock(driver->activeUsbHostdevs);
count = virUSBDeviceListCount(list);
for (i = 0; i < count; i++) {
virUSBDevicePtr usb = virUSBDeviceListGet(list, i);
if ((tmp = virUSBDeviceListFind(driver->activeUsbHostdevs, usb))) {
const char *other_name = virUSBDeviceGetUsedBy(tmp);
if (other_name)
virReportError(VIR_ERR_OPERATION_INVALID,
_("USB device %s is in use by domain %s"),
virUSBDeviceGetName(tmp), other_name);
else
virReportError(VIR_ERR_OPERATION_INVALID,
_("USB device %s is already in use"),
virUSBDeviceGetName(tmp));
goto error;
}
virUSBDeviceSetUsedBy(usb, name);
VIR_DEBUG("Adding %03d.%03d dom=%s to activeUsbHostdevs",
virUSBDeviceGetBus(usb), virUSBDeviceGetDevno(usb), name);
/*
* The caller is responsible to steal these usb devices
* from the virUSBDeviceList that passed in on success,
* perform rollback on failure.
*/
if (virUSBDeviceListAdd(driver->activeUsbHostdevs, usb) < 0)
goto error;
}
virObjectUnlock(driver->activeUsbHostdevs);
return 0;
error:
for (j = 0; j < i; j++) {
tmp = virUSBDeviceListGet(list, i);
virUSBDeviceListSteal(driver->activeUsbHostdevs, tmp);
}
virObjectUnlock(driver->activeUsbHostdevs);
return -1;
}
int
virLXCFindHostdevUSBDevice(virDomainHostdevDefPtr hostdev,
bool mandatory,
virUSBDevicePtr *usb)
{
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;
bool autoAddress = hostdev->source.subsys.u.usb.autoAddress;
int rc;
*usb = NULL;
if (vendor && bus) {
rc = virUSBDeviceFind(vendor, product, bus, device,
NULL,
autoAddress ? false : mandatory,
usb);
if (rc < 0) {
return -1;
} else if (!autoAddress) {
goto out;
} else {
VIR_INFO("USB device %x:%x could not be found at previous"
" address (bus:%u device:%u)",
vendor, product, bus, device);
}
}
/* When vendor is specified, its USB address is either unspecified or the
* device could not be found at the USB device where it had been
* automatically found before.
*/
if (vendor) {
virUSBDeviceList *devs;
rc = virUSBDeviceFindByVendor(vendor, product,
NULL,
mandatory, &devs);
if (rc < 0)
return -1;
if (rc == 1) {
*usb = virUSBDeviceListGet(devs, 0);
virUSBDeviceListSteal(devs, *usb);
}
virObjectUnref(devs);
if (rc == 0) {
goto out;
} else if (rc > 1) {
if (autoAddress) {
virReportError(VIR_ERR_OPERATION_FAILED,
_("Multiple USB devices for %x:%x were found,"
" but none of them is at bus:%u device:%u"),
vendor, product, bus, device);
} else {
virReportError(VIR_ERR_OPERATION_FAILED,
_("Multiple USB devices for %x:%x, "
"use <address> to specify one"),
vendor, product);
}
return -1;
}
hostdev->source.subsys.u.usb.bus = virUSBDeviceGetBus(*usb);
hostdev->source.subsys.u.usb.device = virUSBDeviceGetDevno(*usb);
hostdev->source.subsys.u.usb.autoAddress = true;
if (autoAddress) {
VIR_INFO("USB device %x:%x found at bus:%u device:%u (moved"
" from bus:%u device:%u)",
vendor, product,
hostdev->source.subsys.u.usb.bus,
hostdev->source.subsys.u.usb.device,
bus, device);
}
} else if (!vendor && bus) {
if (virUSBDeviceFindByBus(bus, device,
NULL,
mandatory, usb) < 0)
return -1;
}
out:
if (!*usb)
hostdev->missing = true;
return 0;
}