2 * Dynamic device configuration and creation.
4 * Copyright (c) 2009 CodeSourcery
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
20 #include "qemu/osdep.h"
21 #include "hw/sysbus.h"
22 #include "monitor/hmp.h"
23 #include "monitor/monitor.h"
24 #include "monitor/qdev.h"
25 #include "sysemu/arch_init.h"
26 #include "qapi/error.h"
27 #include "qapi/qapi-commands-qdev.h"
28 #include "qapi/qmp/qdict.h"
29 #include "qapi/qmp/qerror.h"
30 #include "qemu/config-file.h"
31 #include "qemu/error-report.h"
32 #include "qemu/help_option.h"
33 #include "qemu/option.h"
34 #include "qemu/qemu-print.h"
35 #include "qemu/option_int.h"
36 #include "sysemu/block-backend.h"
37 #include "sysemu/sysemu.h"
38 #include "migration/misc.h"
39 #include "migration/migration.h"
40 #include "qemu/cutils.h"
43 * Aliases were a bad idea from the start. Let's keep them
44 * from spreading further.
46 typedef struct QDevAlias
53 /* Please keep this table sorted by typename. */
54 static const QDevAlias qdev_alias_table[] = {
55 { "e1000", "e1000-82540em" },
56 { "ich9-ahci", "ahci" },
57 { "lsi53c895a", "lsi" },
58 { "virtio-9p-ccw", "virtio-9p", QEMU_ARCH_S390X },
59 { "virtio-9p-pci", "virtio-9p", QEMU_ARCH_ALL & ~QEMU_ARCH_S390X },
60 { "virtio-balloon-ccw", "virtio-balloon", QEMU_ARCH_S390X },
61 { "virtio-balloon-pci", "virtio-balloon",
62 QEMU_ARCH_ALL & ~QEMU_ARCH_S390X },
63 { "virtio-blk-ccw", "virtio-blk", QEMU_ARCH_S390X },
64 { "virtio-blk-pci", "virtio-blk", QEMU_ARCH_ALL & ~QEMU_ARCH_S390X },
65 { "virtio-gpu-ccw", "virtio-gpu", QEMU_ARCH_S390X },
66 { "virtio-gpu-pci", "virtio-gpu", QEMU_ARCH_ALL & ~QEMU_ARCH_S390X },
67 { "virtio-input-host-ccw", "virtio-input-host", QEMU_ARCH_S390X },
68 { "virtio-input-host-pci", "virtio-input-host",
69 QEMU_ARCH_ALL & ~QEMU_ARCH_S390X },
70 { "virtio-keyboard-ccw", "virtio-keyboard", QEMU_ARCH_S390X },
71 { "virtio-keyboard-pci", "virtio-keyboard",
72 QEMU_ARCH_ALL & ~QEMU_ARCH_S390X },
73 { "virtio-mouse-ccw", "virtio-mouse", QEMU_ARCH_S390X },
74 { "virtio-mouse-pci", "virtio-mouse", QEMU_ARCH_ALL & ~QEMU_ARCH_S390X },
75 { "virtio-net-ccw", "virtio-net", QEMU_ARCH_S390X },
76 { "virtio-net-pci", "virtio-net", QEMU_ARCH_ALL & ~QEMU_ARCH_S390X },
77 { "virtio-rng-ccw", "virtio-rng", QEMU_ARCH_S390X },
78 { "virtio-rng-pci", "virtio-rng", QEMU_ARCH_ALL & ~QEMU_ARCH_S390X },
79 { "virtio-scsi-ccw", "virtio-scsi", QEMU_ARCH_S390X },
80 { "virtio-scsi-pci", "virtio-scsi", QEMU_ARCH_ALL & ~QEMU_ARCH_S390X },
81 { "virtio-serial-ccw", "virtio-serial", QEMU_ARCH_S390X },
82 { "virtio-serial-pci", "virtio-serial", QEMU_ARCH_ALL & ~QEMU_ARCH_S390X },
83 { "virtio-tablet-ccw", "virtio-tablet", QEMU_ARCH_S390X },
84 { "virtio-tablet-pci", "virtio-tablet", QEMU_ARCH_ALL & ~QEMU_ARCH_S390X },
88 static const char *qdev_class_get_alias(DeviceClass *dc)
90 const char *typename = object_class_get_name(OBJECT_CLASS(dc));
93 for (i = 0; qdev_alias_table[i].typename; i++) {
94 if (qdev_alias_table[i].arch_mask &&
95 !(qdev_alias_table[i].arch_mask & arch_type)) {
99 if (strcmp(qdev_alias_table[i].typename, typename) == 0) {
100 return qdev_alias_table[i].alias;
107 static bool qdev_class_has_alias(DeviceClass *dc)
109 return (qdev_class_get_alias(dc) != NULL);
112 static void qdev_print_devinfo(DeviceClass *dc)
114 qemu_printf("name \"%s\"", object_class_get_name(OBJECT_CLASS(dc)));
116 qemu_printf(", bus %s", dc->bus_type);
118 if (qdev_class_has_alias(dc)) {
119 qemu_printf(", alias \"%s\"", qdev_class_get_alias(dc));
122 qemu_printf(", desc \"%s\"", dc->desc);
124 if (!dc->user_creatable) {
125 qemu_printf(", no-user");
130 static void qdev_print_devinfos(bool show_no_user)
132 static const char *cat_name[DEVICE_CATEGORY_MAX + 1] = {
133 [DEVICE_CATEGORY_BRIDGE] = "Controller/Bridge/Hub",
134 [DEVICE_CATEGORY_USB] = "USB",
135 [DEVICE_CATEGORY_STORAGE] = "Storage",
136 [DEVICE_CATEGORY_NETWORK] = "Network",
137 [DEVICE_CATEGORY_INPUT] = "Input",
138 [DEVICE_CATEGORY_DISPLAY] = "Display",
139 [DEVICE_CATEGORY_SOUND] = "Sound",
140 [DEVICE_CATEGORY_MISC] = "Misc",
141 [DEVICE_CATEGORY_CPU] = "CPU",
142 [DEVICE_CATEGORY_MAX] = "Uncategorized",
148 list = object_class_get_list_sorted(TYPE_DEVICE, false);
150 for (i = 0; i <= DEVICE_CATEGORY_MAX; i++) {
152 for (elt = list; elt; elt = elt->next) {
153 DeviceClass *dc = OBJECT_CLASS_CHECK(DeviceClass, elt->data,
155 if ((i < DEVICE_CATEGORY_MAX
156 ? !test_bit(i, dc->categories)
157 : !bitmap_empty(dc->categories, DEVICE_CATEGORY_MAX))
159 && !dc->user_creatable)) {
163 qemu_printf("%s%s devices:\n", i ? "\n" : "", cat_name[i]);
166 qdev_print_devinfo(dc);
173 static int set_property(void *opaque, const char *name, const char *value,
176 Object *obj = opaque;
179 if (strcmp(name, "driver") == 0)
181 if (strcmp(name, "bus") == 0)
184 object_property_parse(obj, value, name, &err);
186 error_propagate(errp, err);
192 static const char *find_typename_by_alias(const char *alias)
196 for (i = 0; qdev_alias_table[i].alias; i++) {
197 if (qdev_alias_table[i].arch_mask &&
198 !(qdev_alias_table[i].arch_mask & arch_type)) {
202 if (strcmp(qdev_alias_table[i].alias, alias) == 0) {
203 return qdev_alias_table[i].typename;
210 static DeviceClass *qdev_get_device_class(const char **driver, Error **errp)
214 const char *original_name = *driver;
216 oc = object_class_by_name(*driver);
218 const char *typename = find_typename_by_alias(*driver);
222 oc = object_class_by_name(*driver);
226 if (!object_class_dynamic_cast(oc, TYPE_DEVICE)) {
227 if (*driver != original_name) {
228 error_setg(errp, "'%s' (alias '%s') is not a valid device model"
229 " name", original_name, *driver);
231 error_setg(errp, "'%s' is not a valid device model name", *driver);
236 if (object_class_is_abstract(oc)) {
237 error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "driver",
238 "non-abstract device type");
242 dc = DEVICE_CLASS(oc);
243 if (!dc->user_creatable ||
244 (qdev_hotplug && !dc->hotpluggable)) {
245 error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "driver",
246 "pluggable device type");
254 int qdev_device_help(QemuOpts *opts)
256 Error *local_err = NULL;
258 ObjectPropertyInfoList *prop_list;
259 ObjectPropertyInfoList *prop;
263 driver = qemu_opt_get(opts, "driver");
264 if (driver && is_help_option(driver)) {
265 qdev_print_devinfos(false);
269 if (!driver || !qemu_opt_has_help_opt(opts)) {
273 if (!object_class_by_name(driver)) {
274 const char *typename = find_typename_by_alias(driver);
281 prop_list = qmp_device_list_properties(driver, &local_err);
287 qemu_printf("%s options:\n", driver);
289 qemu_printf("There are no options for %s.\n", driver);
291 array = g_ptr_array_new();
292 for (prop = prop_list; prop; prop = prop->next) {
293 g_ptr_array_add(array,
294 object_property_help(prop->value->name,
296 prop->value->default_value,
297 prop->value->description));
299 g_ptr_array_sort(array, (GCompareFunc)qemu_pstrcmp0);
300 for (i = 0; i < array->len; i++) {
301 printf("%s\n", (char *)array->pdata[i]);
303 g_ptr_array_set_free_func(array, g_free);
304 g_ptr_array_free(array, true);
305 qapi_free_ObjectPropertyInfoList(prop_list);
309 error_report_err(local_err);
313 static Object *qdev_get_peripheral(void)
318 dev = container_get(qdev_get_machine(), "/peripheral");
324 static Object *qdev_get_peripheral_anon(void)
329 dev = container_get(qdev_get_machine(), "/peripheral-anon");
335 static void qbus_error_append_bus_list_hint(DeviceState *dev,
339 const char *sep = " ";
341 error_append_hint(errp, "child buses at \"%s\":",
342 dev->id ? dev->id : object_get_typename(OBJECT(dev)));
343 QLIST_FOREACH(child, &dev->child_bus, sibling) {
344 error_append_hint(errp, "%s\"%s\"", sep, child->name);
347 error_append_hint(errp, "\n");
350 static void qbus_error_append_dev_list_hint(BusState *bus,
354 const char *sep = " ";
356 error_append_hint(errp, "devices at \"%s\":", bus->name);
357 QTAILQ_FOREACH(kid, &bus->children, sibling) {
358 DeviceState *dev = kid->child;
359 error_append_hint(errp, "%s\"%s\"", sep,
360 object_get_typename(OBJECT(dev)));
362 error_append_hint(errp, "/\"%s\"", dev->id);
366 error_append_hint(errp, "\n");
369 static BusState *qbus_find_bus(DeviceState *dev, char *elem)
373 QLIST_FOREACH(child, &dev->child_bus, sibling) {
374 if (strcmp(child->name, elem) == 0) {
381 static DeviceState *qbus_find_dev(BusState *bus, char *elem)
386 * try to match in order:
387 * (1) instance id, if present
389 * (3) driver alias, if present
391 QTAILQ_FOREACH(kid, &bus->children, sibling) {
392 DeviceState *dev = kid->child;
393 if (dev->id && strcmp(dev->id, elem) == 0) {
397 QTAILQ_FOREACH(kid, &bus->children, sibling) {
398 DeviceState *dev = kid->child;
399 if (strcmp(object_get_typename(OBJECT(dev)), elem) == 0) {
403 QTAILQ_FOREACH(kid, &bus->children, sibling) {
404 DeviceState *dev = kid->child;
405 DeviceClass *dc = DEVICE_GET_CLASS(dev);
407 if (qdev_class_has_alias(dc) &&
408 strcmp(qdev_class_get_alias(dc), elem) == 0) {
415 static inline bool qbus_is_full(BusState *bus)
417 BusClass *bus_class = BUS_GET_CLASS(bus);
418 return bus_class->max_dev && bus->num_children >= bus_class->max_dev;
422 * Search the tree rooted at @bus for a bus.
423 * If @name, search for a bus with that name. Note that bus names
424 * need not be unique. Yes, that's screwed up.
425 * Else search for a bus that is a subtype of @bus_typename.
426 * If more than one exists, prefer one that can take another device.
427 * Return the bus if found, else %NULL.
429 static BusState *qbus_find_recursive(BusState *bus, const char *name,
430 const char *bus_typename)
433 BusState *pick, *child, *ret;
436 assert(name || bus_typename);
438 match = !strcmp(bus->name, name);
440 match = !!object_dynamic_cast(OBJECT(bus), bus_typename);
443 if (match && !qbus_is_full(bus)) {
444 return bus; /* root matches and isn't full */
447 pick = match ? bus : NULL;
449 QTAILQ_FOREACH(kid, &bus->children, sibling) {
450 DeviceState *dev = kid->child;
451 QLIST_FOREACH(child, &dev->child_bus, sibling) {
452 ret = qbus_find_recursive(child, name, bus_typename);
453 if (ret && !qbus_is_full(ret)) {
454 return ret; /* a descendant matches and isn't full */
462 /* root or a descendant matches, but is full */
466 static BusState *qbus_find(const char *path, Error **errp)
473 /* find start element */
474 if (path[0] == '/') {
475 bus = sysbus_get_default();
478 if (sscanf(path, "%127[^/]%n", elem, &len) != 1) {
482 bus = qbus_find_recursive(sysbus_get_default(), elem, NULL);
484 error_setg(errp, "Bus '%s' not found", elem);
491 assert(path[pos] == '/' || !path[pos]);
492 while (path[pos] == '/') {
495 if (path[pos] == '\0') {
500 if (sscanf(path+pos, "%127[^/]%n", elem, &len) != 1) {
501 g_assert_not_reached();
505 dev = qbus_find_dev(bus, elem);
507 error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
508 "Device '%s' not found", elem);
509 qbus_error_append_dev_list_hint(bus, errp);
513 assert(path[pos] == '/' || !path[pos]);
514 while (path[pos] == '/') {
517 if (path[pos] == '\0') {
518 /* last specified element is a device. If it has exactly
519 * one child bus accept it nevertheless */
520 if (dev->num_child_bus == 1) {
521 bus = QLIST_FIRST(&dev->child_bus);
524 if (dev->num_child_bus) {
525 error_setg(errp, "Device '%s' has multiple child buses",
527 qbus_error_append_bus_list_hint(dev, errp);
529 error_setg(errp, "Device '%s' has no child bus", elem);
535 if (sscanf(path+pos, "%127[^/]%n", elem, &len) != 1) {
536 g_assert_not_reached();
540 bus = qbus_find_bus(dev, elem);
542 error_setg(errp, "Bus '%s' not found", elem);
543 qbus_error_append_bus_list_hint(dev, errp);
548 if (qbus_is_full(bus)) {
549 error_setg(errp, "Bus '%s' is full", path);
555 void qdev_set_id(DeviceState *dev, const char *id)
562 object_property_add_child(qdev_get_peripheral(), dev->id,
565 static int anon_count;
566 gchar *name = g_strdup_printf("device[%d]", anon_count++);
567 object_property_add_child(qdev_get_peripheral_anon(), name,
573 static int is_failover_device(void *opaque, const char *name, const char *value,
576 if (strcmp(name, "failover_pair_id") == 0) {
577 QemuOpts *opts = (QemuOpts *)opaque;
579 if (qdev_should_hide_device(opts)) {
587 static bool should_hide_device(QemuOpts *opts)
589 if (qemu_opt_foreach(opts, is_failover_device, opts, NULL) == 0) {
595 DeviceState *qdev_device_add(QemuOpts *opts, Error **errp)
598 const char *driver, *path;
599 DeviceState *dev = NULL;
600 BusState *bus = NULL;
604 driver = qemu_opt_get(opts, "driver");
606 error_setg(errp, QERR_MISSING_PARAMETER, "driver");
611 dc = qdev_get_device_class(&driver, errp);
617 path = qemu_opt_get(opts, "bus");
619 bus = qbus_find(path, errp);
623 if (!object_dynamic_cast(OBJECT(bus), dc->bus_type)) {
624 error_setg(errp, "Device '%s' can't go on %s bus",
625 driver, object_get_typename(OBJECT(bus)));
628 } else if (dc->bus_type != NULL) {
629 bus = qbus_find_recursive(sysbus_get_default(), NULL, dc->bus_type);
630 if (!bus || qbus_is_full(bus)) {
631 error_setg(errp, "No '%s' bus found for device '%s'",
632 dc->bus_type, driver);
636 hide = should_hide_device(opts);
638 if ((hide || qdev_hotplug) && bus && !qbus_is_hotpluggable(bus)) {
639 error_setg(errp, QERR_BUS_NO_HOTPLUG, bus->name);
647 if (!migration_is_idle()) {
648 error_setg(errp, "device_add not allowed while migrating");
653 dev = DEVICE(object_new(driver));
655 /* Check whether the hotplug is allowed by the machine */
656 if (qdev_hotplug && !qdev_hotplug_allowed(dev, &err)) {
657 /* Error must be set in the machine hook */
663 qdev_set_parent_bus(dev, bus);
664 } else if (qdev_hotplug && !qdev_get_machine_hotplug_handler(dev)) {
665 /* No bus, no machine hotplug handler --> device is not hotpluggable */
666 error_setg(&err, "Device '%s' can not be hotplugged on this machine",
671 qdev_set_id(dev, qemu_opts_id(opts));
674 if (qemu_opt_foreach(opts, set_property, dev, &err)) {
679 object_property_set_bool(OBJECT(dev), true, "realized", &err);
687 error_propagate(errp, err);
689 object_unparent(OBJECT(dev));
690 object_unref(OBJECT(dev));
696 #define qdev_printf(fmt, ...) monitor_printf(mon, "%*s" fmt, indent, "", ## __VA_ARGS__)
697 static void qbus_print(Monitor *mon, BusState *bus, int indent);
699 static void qdev_print_props(Monitor *mon, DeviceState *dev, Property *props,
704 for (; props->name; props++) {
707 char *legacy_name = g_strdup_printf("legacy-%s", props->name);
708 if (object_property_get_type(OBJECT(dev), legacy_name, NULL)) {
709 value = object_property_get_str(OBJECT(dev), legacy_name, &err);
711 value = object_property_print(OBJECT(dev), props->name, true, &err);
719 qdev_printf("%s = %s\n", props->name,
720 value && *value ? value : "<null>");
725 static void bus_print_dev(BusState *bus, Monitor *mon, DeviceState *dev, int indent)
727 BusClass *bc = BUS_GET_CLASS(bus);
730 bc->print_dev(mon, dev, indent);
734 static void qdev_print(Monitor *mon, DeviceState *dev, int indent)
740 qdev_printf("dev: %s, id \"%s\"\n", object_get_typename(OBJECT(dev)),
741 dev->id ? dev->id : "");
743 QLIST_FOREACH(ngl, &dev->gpios, node) {
745 qdev_printf("gpio-in \"%s\" %d\n", ngl->name ? ngl->name : "",
749 qdev_printf("gpio-out \"%s\" %d\n", ngl->name ? ngl->name : "",
753 class = object_get_class(OBJECT(dev));
755 qdev_print_props(mon, dev, DEVICE_CLASS(class)->props_, indent);
756 class = object_class_get_parent(class);
757 } while (class != object_class_by_name(TYPE_DEVICE));
758 bus_print_dev(dev->parent_bus, mon, dev, indent);
759 QLIST_FOREACH(child, &dev->child_bus, sibling) {
760 qbus_print(mon, child, indent);
764 static void qbus_print(Monitor *mon, BusState *bus, int indent)
768 qdev_printf("bus: %s\n", bus->name);
770 qdev_printf("type %s\n", object_get_typename(OBJECT(bus)));
771 QTAILQ_FOREACH(kid, &bus->children, sibling) {
772 DeviceState *dev = kid->child;
773 qdev_print(mon, dev, indent);
778 void hmp_info_qtree(Monitor *mon, const QDict *qdict)
780 if (sysbus_get_default())
781 qbus_print(mon, sysbus_get_default(), 0);
784 void hmp_info_qdm(Monitor *mon, const QDict *qdict)
786 qdev_print_devinfos(true);
789 void qmp_device_add(QDict *qdict, QObject **ret_data, Error **errp)
791 Error *local_err = NULL;
795 opts = qemu_opts_from_qdict(qemu_find_opts("device"), qdict, &local_err);
797 error_propagate(errp, local_err);
800 if (!monitor_cur_is_qmp() && qdev_device_help(opts)) {
804 dev = qdev_device_add(opts, &local_err);
806 error_propagate(errp, local_err);
810 object_unref(OBJECT(dev));
813 static DeviceState *find_device_state(const char *id, Error **errp)
818 obj = object_resolve_path(id, NULL);
820 char *root_path = object_get_canonical_path(qdev_get_peripheral());
821 char *path = g_strdup_printf("%s/%s", root_path, id);
824 obj = object_resolve_path_type(path, TYPE_DEVICE, NULL);
829 error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
830 "Device '%s' not found", id);
834 if (!object_dynamic_cast(obj, TYPE_DEVICE)) {
835 error_setg(errp, "%s is not a hotpluggable device", id);
842 void qdev_unplug(DeviceState *dev, Error **errp)
844 DeviceClass *dc = DEVICE_GET_CLASS(dev);
845 HotplugHandler *hotplug_ctrl;
846 HotplugHandlerClass *hdc;
847 Error *local_err = NULL;
849 if (dev->parent_bus && !qbus_is_hotpluggable(dev->parent_bus)) {
850 error_setg(errp, QERR_BUS_NO_HOTPLUG, dev->parent_bus->name);
854 if (!dc->hotpluggable) {
855 error_setg(errp, QERR_DEVICE_NO_HOTPLUG,
856 object_get_typename(OBJECT(dev)));
860 if (!migration_is_idle() && !dev->allow_unplug_during_migration) {
861 error_setg(errp, "device_del not allowed while migrating");
865 qdev_hot_removed = true;
867 hotplug_ctrl = qdev_get_hotplug_handler(dev);
868 /* hotpluggable device MUST have HotplugHandler, if it doesn't
869 * then something is very wrong with it */
870 g_assert(hotplug_ctrl);
872 /* If device supports async unplug just request it to be done,
873 * otherwise just remove it synchronously */
874 hdc = HOTPLUG_HANDLER_GET_CLASS(hotplug_ctrl);
875 if (hdc->unplug_request) {
876 hotplug_handler_unplug_request(hotplug_ctrl, dev, &local_err);
878 hotplug_handler_unplug(hotplug_ctrl, dev, &local_err);
880 object_unparent(OBJECT(dev));
883 error_propagate(errp, local_err);
886 void qmp_device_del(const char *id, Error **errp)
888 DeviceState *dev = find_device_state(id, errp);
890 qdev_unplug(dev, errp);
894 void hmp_device_add(Monitor *mon, const QDict *qdict)
898 qmp_device_add((QDict *)qdict, NULL, &err);
899 hmp_handle_error(mon, err);
902 void hmp_device_del(Monitor *mon, const QDict *qdict)
904 const char *id = qdict_get_str(qdict, "id");
907 qmp_device_del(id, &err);
908 hmp_handle_error(mon, err);
911 BlockBackend *blk_by_qdev_id(const char *id, Error **errp)
916 dev = find_device_state(id, errp);
921 blk = blk_by_dev(dev);
923 error_setg(errp, "Device does not have a block device backend");
928 void qdev_machine_init(void)
930 qdev_get_peripheral_anon();
931 qdev_get_peripheral();
934 QemuOptsList qemu_device_opts = {
936 .implied_opt_name = "driver",
937 .head = QTAILQ_HEAD_INITIALIZER(qemu_device_opts.head),
940 * no elements => accept any
941 * sanity checking will happen later
942 * when setting device properties
944 { /* end of list */ }
948 QemuOptsList qemu_global_opts = {
950 .head = QTAILQ_HEAD_INITIALIZER(qemu_global_opts.head),
954 .type = QEMU_OPT_STRING,
957 .type = QEMU_OPT_STRING,
960 .type = QEMU_OPT_STRING,
962 { /* end of list */ }
966 int qemu_global_option(const char *str)
968 char driver[64], property[64];
972 rc = sscanf(str, "%63[^.=].%63[^=]%n", driver, property, &offset);
973 if (rc == 2 && str[offset] == '=') {
974 opts = qemu_opts_create(&qemu_global_opts, NULL, 0, &error_abort);
975 qemu_opt_set(opts, "driver", driver, &error_abort);
976 qemu_opt_set(opts, "property", property, &error_abort);
977 qemu_opt_set(opts, "value", str + offset + 1, &error_abort);
981 opts = qemu_opts_parse_noisily(&qemu_global_opts, str, false);