s390x/sclpconsole-lm: truncate input if line is too long
[qemu.git] / qdev-monitor.c
1 /*
2 * Dynamic device configuration and creation.
3 *
4 * Copyright (c) 2009 CodeSourcery
5 *
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.
10 *
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.
15 *
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/>.
18 */
19
20 #include "hw/qdev.h"
21 #include "hw/sysbus.h"
22 #include "monitor/monitor.h"
23 #include "monitor/qdev.h"
24 #include "qmp-commands.h"
25 #include "sysemu/arch_init.h"
26 #include "qemu/config-file.h"
27
28 /*
29 * Aliases were a bad idea from the start. Let's keep them
30 * from spreading further.
31 */
32 typedef struct QDevAlias
33 {
34 const char *typename;
35 const char *alias;
36 uint32_t arch_mask;
37 } QDevAlias;
38
39 static const QDevAlias qdev_alias_table[] = {
40 { "virtio-blk-pci", "virtio-blk", QEMU_ARCH_ALL & ~QEMU_ARCH_S390X },
41 { "virtio-net-pci", "virtio-net", QEMU_ARCH_ALL & ~QEMU_ARCH_S390X },
42 { "virtio-serial-pci", "virtio-serial", QEMU_ARCH_ALL & ~QEMU_ARCH_S390X },
43 { "virtio-balloon-pci", "virtio-balloon",
44 QEMU_ARCH_ALL & ~QEMU_ARCH_S390X },
45 { "virtio-blk-s390", "virtio-blk", QEMU_ARCH_S390X },
46 { "virtio-net-s390", "virtio-net", QEMU_ARCH_S390X },
47 { "virtio-serial-s390", "virtio-serial", QEMU_ARCH_S390X },
48 { "lsi53c895a", "lsi" },
49 { "ich9-ahci", "ahci" },
50 { "kvm-pci-assign", "pci-assign" },
51 { }
52 };
53
54 static const char *qdev_class_get_alias(DeviceClass *dc)
55 {
56 const char *typename = object_class_get_name(OBJECT_CLASS(dc));
57 int i;
58
59 for (i = 0; qdev_alias_table[i].typename; i++) {
60 if (qdev_alias_table[i].arch_mask &&
61 !(qdev_alias_table[i].arch_mask & arch_type)) {
62 continue;
63 }
64
65 if (strcmp(qdev_alias_table[i].typename, typename) == 0) {
66 return qdev_alias_table[i].alias;
67 }
68 }
69
70 return NULL;
71 }
72
73 static bool qdev_class_has_alias(DeviceClass *dc)
74 {
75 return (qdev_class_get_alias(dc) != NULL);
76 }
77
78 static void qdev_print_devinfo(DeviceClass *dc)
79 {
80 error_printf("name \"%s\"", object_class_get_name(OBJECT_CLASS(dc)));
81 if (dc->bus_type) {
82 error_printf(", bus %s", dc->bus_type);
83 }
84 if (qdev_class_has_alias(dc)) {
85 error_printf(", alias \"%s\"", qdev_class_get_alias(dc));
86 }
87 if (dc->desc) {
88 error_printf(", desc \"%s\"", dc->desc);
89 }
90 if (dc->cannot_instantiate_with_device_add_yet) {
91 error_printf(", no-user");
92 }
93 error_printf("\n");
94 }
95
96 static gint devinfo_cmp(gconstpointer a, gconstpointer b)
97 {
98 return strcasecmp(object_class_get_name((ObjectClass *)a),
99 object_class_get_name((ObjectClass *)b));
100 }
101
102 static void qdev_print_devinfos(bool show_no_user)
103 {
104 static const char *cat_name[DEVICE_CATEGORY_MAX + 1] = {
105 [DEVICE_CATEGORY_BRIDGE] = "Controller/Bridge/Hub",
106 [DEVICE_CATEGORY_USB] = "USB",
107 [DEVICE_CATEGORY_STORAGE] = "Storage",
108 [DEVICE_CATEGORY_NETWORK] = "Network",
109 [DEVICE_CATEGORY_INPUT] = "Input",
110 [DEVICE_CATEGORY_DISPLAY] = "Display",
111 [DEVICE_CATEGORY_SOUND] = "Sound",
112 [DEVICE_CATEGORY_MISC] = "Misc",
113 [DEVICE_CATEGORY_MAX] = "Uncategorized",
114 };
115 GSList *list, *elt;
116 int i;
117 bool cat_printed;
118
119 list = g_slist_sort(object_class_get_list(TYPE_DEVICE, false),
120 devinfo_cmp);
121
122 for (i = 0; i <= DEVICE_CATEGORY_MAX; i++) {
123 cat_printed = false;
124 for (elt = list; elt; elt = elt->next) {
125 DeviceClass *dc = OBJECT_CLASS_CHECK(DeviceClass, elt->data,
126 TYPE_DEVICE);
127 if ((i < DEVICE_CATEGORY_MAX
128 ? !test_bit(i, dc->categories)
129 : !bitmap_empty(dc->categories, DEVICE_CATEGORY_MAX))
130 || (!show_no_user
131 && dc->cannot_instantiate_with_device_add_yet)) {
132 continue;
133 }
134 if (!cat_printed) {
135 error_printf("%s%s devices:\n", i ? "\n" : "",
136 cat_name[i]);
137 cat_printed = true;
138 }
139 qdev_print_devinfo(dc);
140 }
141 }
142
143 g_slist_free(list);
144 }
145
146 static int set_property(const char *name, const char *value, void *opaque)
147 {
148 Object *obj = opaque;
149 Error *err = NULL;
150
151 if (strcmp(name, "driver") == 0)
152 return 0;
153 if (strcmp(name, "bus") == 0)
154 return 0;
155
156 object_property_parse(obj, value, name, &err);
157 if (err != NULL) {
158 qerror_report_err(err);
159 error_free(err);
160 return -1;
161 }
162 return 0;
163 }
164
165 static const char *find_typename_by_alias(const char *alias)
166 {
167 int i;
168
169 for (i = 0; qdev_alias_table[i].alias; i++) {
170 if (qdev_alias_table[i].arch_mask &&
171 !(qdev_alias_table[i].arch_mask & arch_type)) {
172 continue;
173 }
174
175 if (strcmp(qdev_alias_table[i].alias, alias) == 0) {
176 return qdev_alias_table[i].typename;
177 }
178 }
179
180 return NULL;
181 }
182
183 static DeviceClass *qdev_get_device_class(const char **driver, Error **errp)
184 {
185 ObjectClass *oc;
186 DeviceClass *dc;
187
188 oc = object_class_by_name(*driver);
189 if (!oc) {
190 const char *typename = find_typename_by_alias(*driver);
191
192 if (typename) {
193 *driver = typename;
194 oc = object_class_by_name(*driver);
195 }
196 }
197
198 if (!object_class_dynamic_cast(oc, TYPE_DEVICE)) {
199 error_setg(errp, "'%s' is not a valid device model name", *driver);
200 return NULL;
201 }
202
203 if (object_class_is_abstract(oc)) {
204 error_set(errp, QERR_INVALID_PARAMETER_VALUE, "driver",
205 "non-abstract device type");
206 return NULL;
207 }
208
209 dc = DEVICE_CLASS(oc);
210 if (dc->cannot_instantiate_with_device_add_yet ||
211 (qdev_hotplug && !dc->hotpluggable)) {
212 error_set(errp, QERR_INVALID_PARAMETER_VALUE, "driver",
213 "pluggable device type");
214 return NULL;
215 }
216
217 return dc;
218 }
219
220
221 int qdev_device_help(QemuOpts *opts)
222 {
223 Error *local_err = NULL;
224 const char *driver;
225 DevicePropertyInfoList *prop_list;
226 DevicePropertyInfoList *prop;
227
228 driver = qemu_opt_get(opts, "driver");
229 if (driver && is_help_option(driver)) {
230 qdev_print_devinfos(false);
231 return 1;
232 }
233
234 if (!driver || !qemu_opt_has_help_opt(opts)) {
235 return 0;
236 }
237
238 qdev_get_device_class(&driver, &local_err);
239 if (local_err) {
240 goto error;
241 }
242
243 prop_list = qmp_device_list_properties(driver, &local_err);
244 if (local_err) {
245 goto error;
246 }
247
248 for (prop = prop_list; prop; prop = prop->next) {
249 error_printf("%s.%s=%s", driver,
250 prop->value->name,
251 prop->value->type);
252 if (prop->value->has_description) {
253 error_printf(" (%s)\n", prop->value->description);
254 } else {
255 error_printf("\n");
256 }
257 }
258
259 qapi_free_DevicePropertyInfoList(prop_list);
260 return 1;
261
262 error:
263 error_printf("%s\n", error_get_pretty(local_err));
264 error_free(local_err);
265 return 1;
266 }
267
268 static Object *qdev_get_peripheral(void)
269 {
270 static Object *dev;
271
272 if (dev == NULL) {
273 dev = container_get(qdev_get_machine(), "/peripheral");
274 }
275
276 return dev;
277 }
278
279 static Object *qdev_get_peripheral_anon(void)
280 {
281 static Object *dev;
282
283 if (dev == NULL) {
284 dev = container_get(qdev_get_machine(), "/peripheral-anon");
285 }
286
287 return dev;
288 }
289
290 static void qbus_list_bus(DeviceState *dev)
291 {
292 BusState *child;
293 const char *sep = " ";
294
295 error_printf("child busses at \"%s\":",
296 dev->id ? dev->id : object_get_typename(OBJECT(dev)));
297 QLIST_FOREACH(child, &dev->child_bus, sibling) {
298 error_printf("%s\"%s\"", sep, child->name);
299 sep = ", ";
300 }
301 error_printf("\n");
302 }
303
304 static void qbus_list_dev(BusState *bus)
305 {
306 BusChild *kid;
307 const char *sep = " ";
308
309 error_printf("devices at \"%s\":", bus->name);
310 QTAILQ_FOREACH(kid, &bus->children, sibling) {
311 DeviceState *dev = kid->child;
312 error_printf("%s\"%s\"", sep, object_get_typename(OBJECT(dev)));
313 if (dev->id)
314 error_printf("/\"%s\"", dev->id);
315 sep = ", ";
316 }
317 error_printf("\n");
318 }
319
320 static BusState *qbus_find_bus(DeviceState *dev, char *elem)
321 {
322 BusState *child;
323
324 QLIST_FOREACH(child, &dev->child_bus, sibling) {
325 if (strcmp(child->name, elem) == 0) {
326 return child;
327 }
328 }
329 return NULL;
330 }
331
332 static DeviceState *qbus_find_dev(BusState *bus, char *elem)
333 {
334 BusChild *kid;
335
336 /*
337 * try to match in order:
338 * (1) instance id, if present
339 * (2) driver name
340 * (3) driver alias, if present
341 */
342 QTAILQ_FOREACH(kid, &bus->children, sibling) {
343 DeviceState *dev = kid->child;
344 if (dev->id && strcmp(dev->id, elem) == 0) {
345 return dev;
346 }
347 }
348 QTAILQ_FOREACH(kid, &bus->children, sibling) {
349 DeviceState *dev = kid->child;
350 if (strcmp(object_get_typename(OBJECT(dev)), elem) == 0) {
351 return dev;
352 }
353 }
354 QTAILQ_FOREACH(kid, &bus->children, sibling) {
355 DeviceState *dev = kid->child;
356 DeviceClass *dc = DEVICE_GET_CLASS(dev);
357
358 if (qdev_class_has_alias(dc) &&
359 strcmp(qdev_class_get_alias(dc), elem) == 0) {
360 return dev;
361 }
362 }
363 return NULL;
364 }
365
366 static BusState *qbus_find_recursive(BusState *bus, const char *name,
367 const char *bus_typename)
368 {
369 BusClass *bus_class = BUS_GET_CLASS(bus);
370 BusChild *kid;
371 BusState *child, *ret;
372 int match = 1;
373
374 if (name && (strcmp(bus->name, name) != 0)) {
375 match = 0;
376 } else if (bus_typename && !object_dynamic_cast(OBJECT(bus), bus_typename)) {
377 match = 0;
378 } else if ((bus_class->max_dev != 0) && (bus_class->max_dev <= bus->max_index)) {
379 if (name != NULL) {
380 /* bus was explicitly specified: return an error. */
381 qerror_report(ERROR_CLASS_GENERIC_ERROR, "Bus '%s' is full",
382 bus->name);
383 return NULL;
384 } else {
385 /* bus was not specified: try to find another one. */
386 match = 0;
387 }
388 }
389 if (match) {
390 return bus;
391 }
392
393 QTAILQ_FOREACH(kid, &bus->children, sibling) {
394 DeviceState *dev = kid->child;
395 QLIST_FOREACH(child, &dev->child_bus, sibling) {
396 ret = qbus_find_recursive(child, name, bus_typename);
397 if (ret) {
398 return ret;
399 }
400 }
401 }
402 return NULL;
403 }
404
405 static BusState *qbus_find(const char *path)
406 {
407 DeviceState *dev;
408 BusState *bus;
409 char elem[128];
410 int pos, len;
411
412 /* find start element */
413 if (path[0] == '/') {
414 bus = sysbus_get_default();
415 pos = 0;
416 } else {
417 if (sscanf(path, "%127[^/]%n", elem, &len) != 1) {
418 assert(!path[0]);
419 elem[0] = len = 0;
420 }
421 bus = qbus_find_recursive(sysbus_get_default(), elem, NULL);
422 if (!bus) {
423 qerror_report(QERR_BUS_NOT_FOUND, elem);
424 return NULL;
425 }
426 pos = len;
427 }
428
429 for (;;) {
430 assert(path[pos] == '/' || !path[pos]);
431 while (path[pos] == '/') {
432 pos++;
433 }
434 if (path[pos] == '\0') {
435 return bus;
436 }
437
438 /* find device */
439 if (sscanf(path+pos, "%127[^/]%n", elem, &len) != 1) {
440 g_assert_not_reached();
441 elem[0] = len = 0;
442 }
443 pos += len;
444 dev = qbus_find_dev(bus, elem);
445 if (!dev) {
446 qerror_report(QERR_DEVICE_NOT_FOUND, elem);
447 if (!monitor_cur_is_qmp()) {
448 qbus_list_dev(bus);
449 }
450 return NULL;
451 }
452
453 assert(path[pos] == '/' || !path[pos]);
454 while (path[pos] == '/') {
455 pos++;
456 }
457 if (path[pos] == '\0') {
458 /* last specified element is a device. If it has exactly
459 * one child bus accept it nevertheless */
460 switch (dev->num_child_bus) {
461 case 0:
462 qerror_report(ERROR_CLASS_GENERIC_ERROR,
463 "Device '%s' has no child bus", elem);
464 return NULL;
465 case 1:
466 return QLIST_FIRST(&dev->child_bus);
467 default:
468 qerror_report(ERROR_CLASS_GENERIC_ERROR,
469 "Device '%s' has multiple child busses", elem);
470 if (!monitor_cur_is_qmp()) {
471 qbus_list_bus(dev);
472 }
473 return NULL;
474 }
475 }
476
477 /* find bus */
478 if (sscanf(path+pos, "%127[^/]%n", elem, &len) != 1) {
479 g_assert_not_reached();
480 elem[0] = len = 0;
481 }
482 pos += len;
483 bus = qbus_find_bus(dev, elem);
484 if (!bus) {
485 qerror_report(QERR_BUS_NOT_FOUND, elem);
486 if (!monitor_cur_is_qmp()) {
487 qbus_list_bus(dev);
488 }
489 return NULL;
490 }
491 }
492 }
493
494 DeviceState *qdev_device_add(QemuOpts *opts)
495 {
496 DeviceClass *dc;
497 const char *driver, *path, *id;
498 DeviceState *dev;
499 BusState *bus = NULL;
500 Error *err = NULL;
501
502 driver = qemu_opt_get(opts, "driver");
503 if (!driver) {
504 qerror_report(QERR_MISSING_PARAMETER, "driver");
505 return NULL;
506 }
507
508 /* find driver */
509 dc = qdev_get_device_class(&driver, &err);
510 if (err) {
511 qerror_report_err(err);
512 error_free(err);
513 return NULL;
514 }
515
516 /* find bus */
517 path = qemu_opt_get(opts, "bus");
518 if (path != NULL) {
519 bus = qbus_find(path);
520 if (!bus) {
521 return NULL;
522 }
523 if (!object_dynamic_cast(OBJECT(bus), dc->bus_type)) {
524 qerror_report(ERROR_CLASS_GENERIC_ERROR,
525 "Device '%s' can't go on a %s bus",
526 driver, object_get_typename(OBJECT(bus)));
527 return NULL;
528 }
529 } else if (dc->bus_type != NULL) {
530 bus = qbus_find_recursive(sysbus_get_default(), NULL, dc->bus_type);
531 if (!bus) {
532 qerror_report(ERROR_CLASS_GENERIC_ERROR,
533 "No '%s' bus found for device '%s'",
534 dc->bus_type, driver);
535 return NULL;
536 }
537 }
538 if (qdev_hotplug && bus && !qbus_is_hotpluggable(bus)) {
539 qerror_report(QERR_BUS_NO_HOTPLUG, bus->name);
540 return NULL;
541 }
542
543 /* create device */
544 dev = DEVICE(object_new(driver));
545
546 if (bus) {
547 qdev_set_parent_bus(dev, bus);
548 }
549
550 id = qemu_opts_id(opts);
551 if (id) {
552 dev->id = id;
553 }
554
555 if (dev->id) {
556 object_property_add_child(qdev_get_peripheral(), dev->id,
557 OBJECT(dev), NULL);
558 } else {
559 static int anon_count;
560 gchar *name = g_strdup_printf("device[%d]", anon_count++);
561 object_property_add_child(qdev_get_peripheral_anon(), name,
562 OBJECT(dev), NULL);
563 g_free(name);
564 }
565
566 /* set properties */
567 if (qemu_opt_foreach(opts, set_property, dev, 1) != 0) {
568 object_unparent(OBJECT(dev));
569 object_unref(OBJECT(dev));
570 return NULL;
571 }
572
573 dev->opts = opts;
574 object_property_set_bool(OBJECT(dev), true, "realized", &err);
575 if (err != NULL) {
576 qerror_report_err(err);
577 error_free(err);
578 dev->opts = NULL;
579 object_unparent(OBJECT(dev));
580 object_unref(OBJECT(dev));
581 qerror_report(QERR_DEVICE_INIT_FAILED, driver);
582 return NULL;
583 }
584 return dev;
585 }
586
587
588 #define qdev_printf(fmt, ...) monitor_printf(mon, "%*s" fmt, indent, "", ## __VA_ARGS__)
589 static void qbus_print(Monitor *mon, BusState *bus, int indent);
590
591 static void qdev_print_props(Monitor *mon, DeviceState *dev, Property *props,
592 int indent)
593 {
594 if (!props)
595 return;
596 for (; props->name; props++) {
597 Error *err = NULL;
598 char *value;
599 char *legacy_name = g_strdup_printf("legacy-%s", props->name);
600 if (object_property_get_type(OBJECT(dev), legacy_name, NULL)) {
601 value = object_property_get_str(OBJECT(dev), legacy_name, &err);
602 } else {
603 value = object_property_print(OBJECT(dev), props->name, true, &err);
604 }
605 g_free(legacy_name);
606
607 if (err) {
608 error_free(err);
609 continue;
610 }
611 qdev_printf("%s = %s\n", props->name,
612 value && *value ? value : "<null>");
613 g_free(value);
614 }
615 }
616
617 static void bus_print_dev(BusState *bus, Monitor *mon, DeviceState *dev, int indent)
618 {
619 BusClass *bc = BUS_GET_CLASS(bus);
620
621 if (bc->print_dev) {
622 bc->print_dev(mon, dev, indent);
623 }
624 }
625
626 static void qdev_print(Monitor *mon, DeviceState *dev, int indent)
627 {
628 ObjectClass *class;
629 BusState *child;
630 NamedGPIOList *ngl;
631
632 qdev_printf("dev: %s, id \"%s\"\n", object_get_typename(OBJECT(dev)),
633 dev->id ? dev->id : "");
634 indent += 2;
635 QLIST_FOREACH(ngl, &dev->gpios, node) {
636 if (ngl->num_in) {
637 qdev_printf("gpio-in \"%s\" %d\n", ngl->name ? ngl->name : "",
638 ngl->num_in);
639 }
640 if (ngl->num_out) {
641 qdev_printf("gpio-out \"%s\" %d\n", ngl->name ? ngl->name : "",
642 ngl->num_out);
643 }
644 }
645 class = object_get_class(OBJECT(dev));
646 do {
647 qdev_print_props(mon, dev, DEVICE_CLASS(class)->props, indent);
648 class = object_class_get_parent(class);
649 } while (class != object_class_by_name(TYPE_DEVICE));
650 bus_print_dev(dev->parent_bus, mon, dev, indent);
651 QLIST_FOREACH(child, &dev->child_bus, sibling) {
652 qbus_print(mon, child, indent);
653 }
654 }
655
656 static void qbus_print(Monitor *mon, BusState *bus, int indent)
657 {
658 BusChild *kid;
659
660 qdev_printf("bus: %s\n", bus->name);
661 indent += 2;
662 qdev_printf("type %s\n", object_get_typename(OBJECT(bus)));
663 QTAILQ_FOREACH(kid, &bus->children, sibling) {
664 DeviceState *dev = kid->child;
665 qdev_print(mon, dev, indent);
666 }
667 }
668 #undef qdev_printf
669
670 void do_info_qtree(Monitor *mon, const QDict *qdict)
671 {
672 if (sysbus_get_default())
673 qbus_print(mon, sysbus_get_default(), 0);
674 }
675
676 void do_info_qdm(Monitor *mon, const QDict *qdict)
677 {
678 qdev_print_devinfos(true);
679 }
680
681 int do_device_add(Monitor *mon, const QDict *qdict, QObject **ret_data)
682 {
683 Error *local_err = NULL;
684 QemuOpts *opts;
685 DeviceState *dev;
686
687 opts = qemu_opts_from_qdict(qemu_find_opts("device"), qdict, &local_err);
688 if (local_err) {
689 qerror_report_err(local_err);
690 error_free(local_err);
691 return -1;
692 }
693 if (!monitor_cur_is_qmp() && qdev_device_help(opts)) {
694 qemu_opts_del(opts);
695 return 0;
696 }
697 dev = qdev_device_add(opts);
698 if (!dev) {
699 qemu_opts_del(opts);
700 return -1;
701 }
702 object_unref(OBJECT(dev));
703 return 0;
704 }
705
706 void qmp_device_del(const char *id, Error **errp)
707 {
708 Object *obj;
709 char *root_path = object_get_canonical_path(qdev_get_peripheral());
710 char *path = g_strdup_printf("%s/%s", root_path, id);
711
712 g_free(root_path);
713 obj = object_resolve_path_type(path, TYPE_DEVICE, NULL);
714 g_free(path);
715
716 if (!obj) {
717 error_set(errp, QERR_DEVICE_NOT_FOUND, id);
718 return;
719 }
720
721 qdev_unplug(DEVICE(obj), errp);
722 }
723
724 void qdev_machine_init(void)
725 {
726 qdev_get_peripheral_anon();
727 qdev_get_peripheral();
728 }
729
730 QemuOptsList qemu_device_opts = {
731 .name = "device",
732 .implied_opt_name = "driver",
733 .head = QTAILQ_HEAD_INITIALIZER(qemu_device_opts.head),
734 .desc = {
735 /*
736 * no elements => accept any
737 * sanity checking will happen later
738 * when setting device properties
739 */
740 { /* end of list */ }
741 },
742 };
743
744 QemuOptsList qemu_global_opts = {
745 .name = "global",
746 .head = QTAILQ_HEAD_INITIALIZER(qemu_global_opts.head),
747 .desc = {
748 {
749 .name = "driver",
750 .type = QEMU_OPT_STRING,
751 },{
752 .name = "property",
753 .type = QEMU_OPT_STRING,
754 },{
755 .name = "value",
756 .type = QEMU_OPT_STRING,
757 },
758 { /* end of list */ }
759 },
760 };
761
762 int qemu_global_option(const char *str)
763 {
764 char driver[64], property[64];
765 QemuOpts *opts;
766 int rc, offset;
767
768 rc = sscanf(str, "%63[^.].%63[^=]%n", driver, property, &offset);
769 if (rc < 2 || str[offset] != '=') {
770 error_report("can't parse: \"%s\"", str);
771 return -1;
772 }
773
774 opts = qemu_opts_create(&qemu_global_opts, NULL, 0, &error_abort);
775 qemu_opt_set(opts, "driver", driver);
776 qemu_opt_set(opts, "property", property);
777 qemu_opt_set(opts, "value", str+offset+1);
778 return 0;
779 }