}
-char *
+/**
+ * qemuBuildControllerDevStr:
+ * @domainDef: domain definition
+ * @def: controller definition
+ * @qemuCaps: QEMU binary capabilities
+ * @devstr: device string
+ * @nusbcontroller: number of USB controllers
+ *
+ * Turn @def into a description of the controller that QEMU will understand,
+ * to be used either on the command line or through the monitor.
+ *
+ * The description will be returned in @devstr and can be NULL, eg. when
+ * passing in one of the built-in controllers. The returned string must be
+ * freed by the caller.
+ *
+ * The number pointed to by @nusbcontroller will be increased by one every
+ * time the description for a USB controller has been generated successfully.
+ *
+ * Returns: 0 on success, <0 on failure
+ */
+int
qemuBuildControllerDevStr(const virDomainDef *domainDef,
virDomainControllerDefPtr def,
virQEMUCapsPtr qemuCaps,
+ char **devstr,
int *nusbcontroller)
{
virBuffer buf = VIR_BUFFER_INITIALIZER;
int model = def->model;
const char *modelName = NULL;
+ *devstr = NULL;
+
if (!qemuCheckCCWS390AddressSupport(domainDef, def->info, qemuCaps,
"controller"))
- return NULL;
+ return -1;
if (def->type == VIR_DOMAIN_CONTROLLER_TYPE_SCSI) {
if ((qemuDomainSetSCSIControllerModel(domainDef, qemuCaps, &model)) < 0)
- return NULL;
+ return -1;
}
if (!(def->type == VIR_DOMAIN_CONTROLLER_TYPE_SCSI &&
if (def->queues) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
_("'queues' is only supported by virtio-scsi controller"));
- return NULL;
+ return -1;
}
if (def->cmd_per_lun) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
_("'cmd_per_lun' is only supported by virtio-scsi controller"));
- return NULL;
+ return -1;
}
if (def->max_sectors) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
_("'max_sectors' is only supported by virtio-scsi controller"));
- return NULL;
+ return -1;
}
if (def->ioeventfd) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
_("'ioeventfd' is only supported by virtio-scsi controller"));
- return NULL;
+ return -1;
}
}
if (virBufferCheckError(&buf) < 0)
goto error;
- return virBufferContentAndReset(&buf);
+ *devstr = virBufferContentAndReset(&buf);
+ return 0;
error:
virBufferFreeAndReset(&buf);
- return NULL;
+ return -1;
}
continue;
}
- virCommandAddArg(cmd, "-device");
- if (!(devstr = qemuBuildControllerDevStr(def, cont, qemuCaps,
- &usbcontroller)))
+ if (qemuBuildControllerDevStr(def, cont, qemuCaps,
+ &devstr, &usbcontroller) < 0)
return -1;
- virCommandAddArg(cmd, devstr);
- VIR_FREE(devstr);
+
+ if (devstr) {
+ virCommandAddArg(cmd, "-device");
+ virCommandAddArg(cmd, devstr);
+ VIR_FREE(devstr);
+ }
}
}
virQEMUCapsPtr qemuCaps);
/* Current, best practice */
-char *qemuBuildControllerDevStr(const virDomainDef *domainDef,
- virDomainControllerDefPtr def,
- virQEMUCapsPtr qemuCaps,
- int *nusbcontroller);
+int qemuBuildControllerDevStr(const virDomainDef *domainDef,
+ virDomainControllerDefPtr def,
+ virQEMUCapsPtr qemuCaps,
+ char **devstr,
+ int *nusbcontroller);
int qemuBuildMemoryBackendStr(virJSONValuePtr *backendProps,
const char **backendType,