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Commit | Line | Data |
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ee46d8a5 AL |
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 | ||
d38ea87a | 20 | #include "qemu/osdep.h" |
2f7bd829 | 21 | #include "hw/sysbus.h" |
d94bd092 | 22 | #include "monitor/hmp.h" |
83c9089e | 23 | #include "monitor/monitor.h" |
b4a42f81 | 24 | #include "monitor/qdev.h" |
9c17d615 | 25 | #include "sysemu/arch_init.h" |
e688df6b | 26 | #include "qapi/error.h" |
c577ff62 | 27 | #include "qapi/qapi-commands-qdev.h" |
452fcdbc | 28 | #include "qapi/qmp/qdict.h" |
cc7a8ea7 | 29 | #include "qapi/qmp/qerror.h" |
1de7afc9 | 30 | #include "qemu/config-file.h" |
d49b6836 | 31 | #include "qemu/error-report.h" |
f348b6d1 | 32 | #include "qemu/help_option.h" |
922a01a0 | 33 | #include "qemu/option.h" |
8acb2a75 | 34 | #include "qemu/qemu-print.h" |
f3a85056 | 35 | #include "qemu/option_int.h" |
9680caee | 36 | #include "sysemu/block-backend.h" |
d5938f29 | 37 | #include "sysemu/sysemu.h" |
c4b63b7c | 38 | #include "migration/misc.h" |
f3a85056 | 39 | #include "migration/migration.h" |
e1043d67 | 40 | #include "qemu/cutils.h" |
9f2ff99c | 41 | #include "hw/clock.h" |
ee46d8a5 AL |
42 | |
43 | /* | |
44 | * Aliases were a bad idea from the start. Let's keep them | |
45 | * from spreading further. | |
46 | */ | |
47 | typedef struct QDevAlias | |
48 | { | |
49 | const char *typename; | |
50 | const char *alias; | |
5f629d94 | 51 | uint32_t arch_mask; |
ee46d8a5 AL |
52 | } QDevAlias; |
53 | ||
36e99168 | 54 | /* Please keep this table sorted by typename. */ |
ee46d8a5 | 55 | static const QDevAlias qdev_alias_table[] = { |
2957f5ad | 56 | { "AC97", "ac97" }, /* -soundhw name */ |
36e99168 | 57 | { "e1000", "e1000-82540em" }, |
0e933feb | 58 | { "ES1370", "es1370" }, /* -soundhw name */ |
36e99168 | 59 | { "ich9-ahci", "ahci" }, |
36e99168 | 60 | { "lsi53c895a", "lsi" }, |
588c36ca SS |
61 | { "virtio-9p-ccw", "virtio-9p", QEMU_ARCH_S390X }, |
62 | { "virtio-9p-pci", "virtio-9p", QEMU_ARCH_ALL & ~QEMU_ARCH_S390X }, | |
63 | { "virtio-balloon-ccw", "virtio-balloon", QEMU_ARCH_S390X }, | |
5f629d94 AG |
64 | { "virtio-balloon-pci", "virtio-balloon", |
65 | QEMU_ARCH_ALL & ~QEMU_ARCH_S390X }, | |
1f68f1d3 | 66 | { "virtio-blk-ccw", "virtio-blk", QEMU_ARCH_S390X }, |
36e99168 | 67 | { "virtio-blk-pci", "virtio-blk", QEMU_ARCH_ALL & ~QEMU_ARCH_S390X }, |
588c36ca SS |
68 | { "virtio-gpu-ccw", "virtio-gpu", QEMU_ARCH_S390X }, |
69 | { "virtio-gpu-pci", "virtio-gpu", QEMU_ARCH_ALL & ~QEMU_ARCH_S390X }, | |
70 | { "virtio-input-host-ccw", "virtio-input-host", QEMU_ARCH_S390X }, | |
71 | { "virtio-input-host-pci", "virtio-input-host", | |
72 | QEMU_ARCH_ALL & ~QEMU_ARCH_S390X }, | |
8b4eb09e | 73 | { "virtio-iommu-pci", "virtio-iommu", QEMU_ARCH_ALL & ~QEMU_ARCH_S390X }, |
588c36ca SS |
74 | { "virtio-keyboard-ccw", "virtio-keyboard", QEMU_ARCH_S390X }, |
75 | { "virtio-keyboard-pci", "virtio-keyboard", | |
76 | QEMU_ARCH_ALL & ~QEMU_ARCH_S390X }, | |
77 | { "virtio-mouse-ccw", "virtio-mouse", QEMU_ARCH_S390X }, | |
78 | { "virtio-mouse-pci", "virtio-mouse", QEMU_ARCH_ALL & ~QEMU_ARCH_S390X }, | |
1f68f1d3 | 79 | { "virtio-net-ccw", "virtio-net", QEMU_ARCH_S390X }, |
36e99168 | 80 | { "virtio-net-pci", "virtio-net", QEMU_ARCH_ALL & ~QEMU_ARCH_S390X }, |
588c36ca SS |
81 | { "virtio-rng-ccw", "virtio-rng", QEMU_ARCH_S390X }, |
82 | { "virtio-rng-pci", "virtio-rng", QEMU_ARCH_ALL & ~QEMU_ARCH_S390X }, | |
83 | { "virtio-scsi-ccw", "virtio-scsi", QEMU_ARCH_S390X }, | |
84 | { "virtio-scsi-pci", "virtio-scsi", QEMU_ARCH_ALL & ~QEMU_ARCH_S390X }, | |
1f68f1d3 | 85 | { "virtio-serial-ccw", "virtio-serial", QEMU_ARCH_S390X }, |
36e99168 | 86 | { "virtio-serial-pci", "virtio-serial", QEMU_ARCH_ALL & ~QEMU_ARCH_S390X }, |
588c36ca SS |
87 | { "virtio-tablet-ccw", "virtio-tablet", QEMU_ARCH_S390X }, |
88 | { "virtio-tablet-pci", "virtio-tablet", QEMU_ARCH_ALL & ~QEMU_ARCH_S390X }, | |
ee46d8a5 AL |
89 | { } |
90 | }; | |
91 | ||
92 | static const char *qdev_class_get_alias(DeviceClass *dc) | |
93 | { | |
94 | const char *typename = object_class_get_name(OBJECT_CLASS(dc)); | |
95 | int i; | |
96 | ||
97 | for (i = 0; qdev_alias_table[i].typename; i++) { | |
5f629d94 AG |
98 | if (qdev_alias_table[i].arch_mask && |
99 | !(qdev_alias_table[i].arch_mask & arch_type)) { | |
100 | continue; | |
101 | } | |
102 | ||
ee46d8a5 AL |
103 | if (strcmp(qdev_alias_table[i].typename, typename) == 0) { |
104 | return qdev_alias_table[i].alias; | |
105 | } | |
106 | } | |
107 | ||
108 | return NULL; | |
109 | } | |
110 | ||
111 | static bool qdev_class_has_alias(DeviceClass *dc) | |
112 | { | |
113 | return (qdev_class_get_alias(dc) != NULL); | |
114 | } | |
115 | ||
a3400aee | 116 | static void qdev_print_devinfo(DeviceClass *dc) |
ee46d8a5 | 117 | { |
8acb2a75 | 118 | qemu_printf("name \"%s\"", object_class_get_name(OBJECT_CLASS(dc))); |
0d936928 | 119 | if (dc->bus_type) { |
8acb2a75 | 120 | qemu_printf(", bus %s", dc->bus_type); |
ee46d8a5 AL |
121 | } |
122 | if (qdev_class_has_alias(dc)) { | |
8acb2a75 | 123 | qemu_printf(", alias \"%s\"", qdev_class_get_alias(dc)); |
ee46d8a5 AL |
124 | } |
125 | if (dc->desc) { | |
8acb2a75 | 126 | qemu_printf(", desc \"%s\"", dc->desc); |
ee46d8a5 | 127 | } |
e90f2a8c | 128 | if (!dc->user_creatable) { |
8acb2a75 | 129 | qemu_printf(", no-user"); |
ee46d8a5 | 130 | } |
8acb2a75 | 131 | qemu_printf("\n"); |
ee46d8a5 AL |
132 | } |
133 | ||
a3400aee MA |
134 | static void qdev_print_devinfos(bool show_no_user) |
135 | { | |
136 | static const char *cat_name[DEVICE_CATEGORY_MAX + 1] = { | |
137 | [DEVICE_CATEGORY_BRIDGE] = "Controller/Bridge/Hub", | |
138 | [DEVICE_CATEGORY_USB] = "USB", | |
139 | [DEVICE_CATEGORY_STORAGE] = "Storage", | |
140 | [DEVICE_CATEGORY_NETWORK] = "Network", | |
141 | [DEVICE_CATEGORY_INPUT] = "Input", | |
142 | [DEVICE_CATEGORY_DISPLAY] = "Display", | |
143 | [DEVICE_CATEGORY_SOUND] = "Sound", | |
144 | [DEVICE_CATEGORY_MISC] = "Misc", | |
ba31cc72 | 145 | [DEVICE_CATEGORY_CPU] = "CPU", |
a3400aee MA |
146 | [DEVICE_CATEGORY_MAX] = "Uncategorized", |
147 | }; | |
148 | GSList *list, *elt; | |
149 | int i; | |
150 | bool cat_printed; | |
151 | ||
7ab6e7fc | 152 | module_load_qom_all(); |
47c66009 | 153 | list = object_class_get_list_sorted(TYPE_DEVICE, false); |
a3400aee MA |
154 | |
155 | for (i = 0; i <= DEVICE_CATEGORY_MAX; i++) { | |
156 | cat_printed = false; | |
157 | for (elt = list; elt; elt = elt->next) { | |
158 | DeviceClass *dc = OBJECT_CLASS_CHECK(DeviceClass, elt->data, | |
159 | TYPE_DEVICE); | |
160 | if ((i < DEVICE_CATEGORY_MAX | |
161 | ? !test_bit(i, dc->categories) | |
162 | : !bitmap_empty(dc->categories, DEVICE_CATEGORY_MAX)) | |
efec3dd6 | 163 | || (!show_no_user |
e90f2a8c | 164 | && !dc->user_creatable)) { |
a3400aee MA |
165 | continue; |
166 | } | |
167 | if (!cat_printed) { | |
8acb2a75 | 168 | qemu_printf("%s%s devices:\n", i ? "\n" : "", cat_name[i]); |
a3400aee MA |
169 | cat_printed = true; |
170 | } | |
171 | qdev_print_devinfo(dc); | |
172 | } | |
173 | } | |
174 | ||
175 | g_slist_free(list); | |
176 | } | |
177 | ||
71df1d83 MA |
178 | static int set_property(void *opaque, const char *name, const char *value, |
179 | Error **errp) | |
ee46d8a5 | 180 | { |
98a65284 | 181 | Object *obj = opaque; |
b1fe9bcb | 182 | Error *err = NULL; |
ee46d8a5 AL |
183 | |
184 | if (strcmp(name, "driver") == 0) | |
185 | return 0; | |
186 | if (strcmp(name, "bus") == 0) | |
187 | return 0; | |
188 | ||
98a65284 | 189 | object_property_parse(obj, value, name, &err); |
b1fe9bcb | 190 | if (err != NULL) { |
4caa489d | 191 | error_propagate(errp, err); |
ee46d8a5 AL |
192 | return -1; |
193 | } | |
194 | return 0; | |
195 | } | |
196 | ||
197 | static const char *find_typename_by_alias(const char *alias) | |
198 | { | |
199 | int i; | |
200 | ||
201 | for (i = 0; qdev_alias_table[i].alias; i++) { | |
5f629d94 AG |
202 | if (qdev_alias_table[i].arch_mask && |
203 | !(qdev_alias_table[i].arch_mask & arch_type)) { | |
204 | continue; | |
205 | } | |
206 | ||
ee46d8a5 AL |
207 | if (strcmp(qdev_alias_table[i].alias, alias) == 0) { |
208 | return qdev_alias_table[i].typename; | |
209 | } | |
210 | } | |
211 | ||
212 | return NULL; | |
213 | } | |
214 | ||
43c95d78 EH |
215 | static DeviceClass *qdev_get_device_class(const char **driver, Error **errp) |
216 | { | |
217 | ObjectClass *oc; | |
218 | DeviceClass *dc; | |
f6b5319d | 219 | const char *original_name = *driver; |
43c95d78 | 220 | |
7ab6e7fc | 221 | oc = module_object_class_by_name(*driver); |
43c95d78 EH |
222 | if (!oc) { |
223 | const char *typename = find_typename_by_alias(*driver); | |
224 | ||
225 | if (typename) { | |
226 | *driver = typename; | |
7ab6e7fc | 227 | oc = module_object_class_by_name(*driver); |
43c95d78 EH |
228 | } |
229 | } | |
230 | ||
231 | if (!object_class_dynamic_cast(oc, TYPE_DEVICE)) { | |
f6b5319d SS |
232 | if (*driver != original_name) { |
233 | error_setg(errp, "'%s' (alias '%s') is not a valid device model" | |
234 | " name", original_name, *driver); | |
235 | } else { | |
236 | error_setg(errp, "'%s' is not a valid device model name", *driver); | |
237 | } | |
43c95d78 EH |
238 | return NULL; |
239 | } | |
240 | ||
241 | if (object_class_is_abstract(oc)) { | |
c6bd8c70 MA |
242 | error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "driver", |
243 | "non-abstract device type"); | |
43c95d78 EH |
244 | return NULL; |
245 | } | |
246 | ||
247 | dc = DEVICE_CLASS(oc); | |
e90f2a8c | 248 | if (!dc->user_creatable || |
43c95d78 | 249 | (qdev_hotplug && !dc->hotpluggable)) { |
c6bd8c70 MA |
250 | error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "driver", |
251 | "pluggable device type"); | |
43c95d78 EH |
252 | return NULL; |
253 | } | |
254 | ||
255 | return dc; | |
256 | } | |
257 | ||
258 | ||
ee46d8a5 AL |
259 | int qdev_device_help(QemuOpts *opts) |
260 | { | |
ef523587 | 261 | Error *local_err = NULL; |
ee46d8a5 | 262 | const char *driver; |
35f63767 AK |
263 | ObjectPropertyInfoList *prop_list; |
264 | ObjectPropertyInfoList *prop; | |
e1043d67 MAL |
265 | GPtrArray *array; |
266 | int i; | |
ee46d8a5 AL |
267 | |
268 | driver = qemu_opt_get(opts, "driver"); | |
c8057f95 | 269 | if (driver && is_help_option(driver)) { |
a3400aee | 270 | qdev_print_devinfos(false); |
ee46d8a5 AL |
271 | return 1; |
272 | } | |
273 | ||
c8057f95 | 274 | if (!driver || !qemu_opt_has_help_opt(opts)) { |
ee46d8a5 AL |
275 | return 0; |
276 | } | |
277 | ||
33fe9683 MA |
278 | if (!object_class_by_name(driver)) { |
279 | const char *typename = find_typename_by_alias(driver); | |
280 | ||
281 | if (typename) { | |
282 | driver = typename; | |
283 | } | |
ee46d8a5 AL |
284 | } |
285 | ||
ef523587 | 286 | prop_list = qmp_device_list_properties(driver, &local_err); |
0722eba9 | 287 | if (local_err) { |
5185f0e0 | 288 | goto error; |
ee46d8a5 | 289 | } |
ef523587 | 290 | |
9c2762b4 | 291 | if (prop_list) { |
8acb2a75 | 292 | qemu_printf("%s options:\n", driver); |
9c2762b4 | 293 | } else { |
8acb2a75 | 294 | qemu_printf("There are no options for %s.\n", driver); |
9c2762b4 | 295 | } |
e1043d67 | 296 | array = g_ptr_array_new(); |
ef523587 | 297 | for (prop = prop_list; prop; prop = prop->next) { |
e1043d67 MAL |
298 | g_ptr_array_add(array, |
299 | object_property_help(prop->value->name, | |
300 | prop->value->type, | |
301 | prop->value->default_value, | |
302 | prop->value->description)); | |
ef523587 | 303 | } |
e1043d67 MAL |
304 | g_ptr_array_sort(array, (GCompareFunc)qemu_pstrcmp0); |
305 | for (i = 0; i < array->len; i++) { | |
306 | printf("%s\n", (char *)array->pdata[i]); | |
307 | } | |
308 | g_ptr_array_set_free_func(array, g_free); | |
309 | g_ptr_array_free(array, true); | |
35f63767 | 310 | qapi_free_ObjectPropertyInfoList(prop_list); |
ee46d8a5 | 311 | return 1; |
5185f0e0 EH |
312 | |
313 | error: | |
78288671 | 314 | error_report_err(local_err); |
5185f0e0 | 315 | return 1; |
ee46d8a5 AL |
316 | } |
317 | ||
57c9fafe | 318 | static Object *qdev_get_peripheral(void) |
ee46d8a5 | 319 | { |
8b45d447 | 320 | static Object *dev; |
ee46d8a5 AL |
321 | |
322 | if (dev == NULL) { | |
dfe47e70 | 323 | dev = container_get(qdev_get_machine(), "/peripheral"); |
ee46d8a5 AL |
324 | } |
325 | ||
8b45d447 | 326 | return dev; |
ee46d8a5 AL |
327 | } |
328 | ||
57c9fafe | 329 | static Object *qdev_get_peripheral_anon(void) |
ee46d8a5 | 330 | { |
8b45d447 | 331 | static Object *dev; |
ee46d8a5 AL |
332 | |
333 | if (dev == NULL) { | |
dfe47e70 | 334 | dev = container_get(qdev_get_machine(), "/peripheral-anon"); |
ee46d8a5 AL |
335 | } |
336 | ||
8b45d447 | 337 | return dev; |
ee46d8a5 AL |
338 | } |
339 | ||
34077326 VSO |
340 | static void qbus_error_append_bus_list_hint(DeviceState *dev, |
341 | Error *const *errp) | |
ee46d8a5 AL |
342 | { |
343 | BusState *child; | |
344 | const char *sep = " "; | |
345 | ||
50b7b000 EB |
346 | error_append_hint(errp, "child buses at \"%s\":", |
347 | dev->id ? dev->id : object_get_typename(OBJECT(dev))); | |
ee46d8a5 | 348 | QLIST_FOREACH(child, &dev->child_bus, sibling) { |
50b7b000 | 349 | error_append_hint(errp, "%s\"%s\"", sep, child->name); |
ee46d8a5 AL |
350 | sep = ", "; |
351 | } | |
543202c0 | 352 | error_append_hint(errp, "\n"); |
ee46d8a5 AL |
353 | } |
354 | ||
34077326 VSO |
355 | static void qbus_error_append_dev_list_hint(BusState *bus, |
356 | Error *const *errp) | |
ee46d8a5 | 357 | { |
0866aca1 | 358 | BusChild *kid; |
ee46d8a5 AL |
359 | const char *sep = " "; |
360 | ||
50b7b000 | 361 | error_append_hint(errp, "devices at \"%s\":", bus->name); |
0866aca1 AL |
362 | QTAILQ_FOREACH(kid, &bus->children, sibling) { |
363 | DeviceState *dev = kid->child; | |
50b7b000 EB |
364 | error_append_hint(errp, "%s\"%s\"", sep, |
365 | object_get_typename(OBJECT(dev))); | |
366 | if (dev->id) { | |
367 | error_append_hint(errp, "/\"%s\"", dev->id); | |
368 | } | |
ee46d8a5 AL |
369 | sep = ", "; |
370 | } | |
543202c0 | 371 | error_append_hint(errp, "\n"); |
ee46d8a5 AL |
372 | } |
373 | ||
374 | static BusState *qbus_find_bus(DeviceState *dev, char *elem) | |
375 | { | |
376 | BusState *child; | |
377 | ||
378 | QLIST_FOREACH(child, &dev->child_bus, sibling) { | |
379 | if (strcmp(child->name, elem) == 0) { | |
380 | return child; | |
381 | } | |
382 | } | |
383 | return NULL; | |
384 | } | |
385 | ||
386 | static DeviceState *qbus_find_dev(BusState *bus, char *elem) | |
387 | { | |
0866aca1 | 388 | BusChild *kid; |
ee46d8a5 AL |
389 | |
390 | /* | |
391 | * try to match in order: | |
392 | * (1) instance id, if present | |
393 | * (2) driver name | |
394 | * (3) driver alias, if present | |
395 | */ | |
0866aca1 AL |
396 | QTAILQ_FOREACH(kid, &bus->children, sibling) { |
397 | DeviceState *dev = kid->child; | |
ee46d8a5 AL |
398 | if (dev->id && strcmp(dev->id, elem) == 0) { |
399 | return dev; | |
400 | } | |
401 | } | |
0866aca1 AL |
402 | QTAILQ_FOREACH(kid, &bus->children, sibling) { |
403 | DeviceState *dev = kid->child; | |
ee46d8a5 AL |
404 | if (strcmp(object_get_typename(OBJECT(dev)), elem) == 0) { |
405 | return dev; | |
406 | } | |
407 | } | |
0866aca1 AL |
408 | QTAILQ_FOREACH(kid, &bus->children, sibling) { |
409 | DeviceState *dev = kid->child; | |
ee46d8a5 AL |
410 | DeviceClass *dc = DEVICE_GET_CLASS(dev); |
411 | ||
412 | if (qdev_class_has_alias(dc) && | |
413 | strcmp(qdev_class_get_alias(dc), elem) == 0) { | |
414 | return dev; | |
415 | } | |
416 | } | |
417 | return NULL; | |
418 | } | |
419 | ||
a5ec494e MA |
420 | static inline bool qbus_is_full(BusState *bus) |
421 | { | |
422 | BusClass *bus_class = BUS_GET_CLASS(bus); | |
12b2e9f3 | 423 | return bus_class->max_dev && bus->num_children >= bus_class->max_dev; |
a5ec494e MA |
424 | } |
425 | ||
426 | /* | |
427 | * Search the tree rooted at @bus for a bus. | |
428 | * If @name, search for a bus with that name. Note that bus names | |
429 | * need not be unique. Yes, that's screwed up. | |
430 | * Else search for a bus that is a subtype of @bus_typename. | |
431 | * If more than one exists, prefer one that can take another device. | |
432 | * Return the bus if found, else %NULL. | |
433 | */ | |
ee46d8a5 | 434 | static BusState *qbus_find_recursive(BusState *bus, const char *name, |
0d936928 | 435 | const char *bus_typename) |
ee46d8a5 | 436 | { |
0866aca1 | 437 | BusChild *kid; |
a5ec494e MA |
438 | BusState *pick, *child, *ret; |
439 | bool match; | |
440 | ||
441 | assert(name || bus_typename); | |
442 | if (name) { | |
443 | match = !strcmp(bus->name, name); | |
444 | } else { | |
445 | match = !!object_dynamic_cast(OBJECT(bus), bus_typename); | |
1395af6f | 446 | } |
a5ec494e MA |
447 | |
448 | if (match && !qbus_is_full(bus)) { | |
449 | return bus; /* root matches and isn't full */ | |
ee46d8a5 AL |
450 | } |
451 | ||
a5ec494e MA |
452 | pick = match ? bus : NULL; |
453 | ||
0866aca1 AL |
454 | QTAILQ_FOREACH(kid, &bus->children, sibling) { |
455 | DeviceState *dev = kid->child; | |
ee46d8a5 | 456 | QLIST_FOREACH(child, &dev->child_bus, sibling) { |
0d936928 | 457 | ret = qbus_find_recursive(child, name, bus_typename); |
a5ec494e MA |
458 | if (ret && !qbus_is_full(ret)) { |
459 | return ret; /* a descendant matches and isn't full */ | |
460 | } | |
461 | if (ret && !pick) { | |
462 | pick = ret; | |
ee46d8a5 AL |
463 | } |
464 | } | |
465 | } | |
a5ec494e MA |
466 | |
467 | /* root or a descendant matches, but is full */ | |
468 | return pick; | |
ee46d8a5 AL |
469 | } |
470 | ||
d2828429 | 471 | static BusState *qbus_find(const char *path, Error **errp) |
ee46d8a5 AL |
472 | { |
473 | DeviceState *dev; | |
474 | BusState *bus; | |
475 | char elem[128]; | |
476 | int pos, len; | |
477 | ||
478 | /* find start element */ | |
479 | if (path[0] == '/') { | |
480 | bus = sysbus_get_default(); | |
481 | pos = 0; | |
482 | } else { | |
483 | if (sscanf(path, "%127[^/]%n", elem, &len) != 1) { | |
484 | assert(!path[0]); | |
485 | elem[0] = len = 0; | |
486 | } | |
487 | bus = qbus_find_recursive(sysbus_get_default(), elem, NULL); | |
488 | if (!bus) { | |
d2828429 | 489 | error_setg(errp, "Bus '%s' not found", elem); |
ee46d8a5 AL |
490 | return NULL; |
491 | } | |
492 | pos = len; | |
493 | } | |
494 | ||
495 | for (;;) { | |
496 | assert(path[pos] == '/' || !path[pos]); | |
497 | while (path[pos] == '/') { | |
498 | pos++; | |
499 | } | |
500 | if (path[pos] == '\0') { | |
ed238ba2 | 501 | break; |
ee46d8a5 AL |
502 | } |
503 | ||
504 | /* find device */ | |
505 | if (sscanf(path+pos, "%127[^/]%n", elem, &len) != 1) { | |
dfc6f865 | 506 | g_assert_not_reached(); |
ee46d8a5 AL |
507 | elem[0] = len = 0; |
508 | } | |
509 | pos += len; | |
510 | dev = qbus_find_dev(bus, elem); | |
511 | if (!dev) { | |
75158ebb MA |
512 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
513 | "Device '%s' not found", elem); | |
34077326 | 514 | qbus_error_append_dev_list_hint(bus, errp); |
ee46d8a5 AL |
515 | return NULL; |
516 | } | |
517 | ||
518 | assert(path[pos] == '/' || !path[pos]); | |
519 | while (path[pos] == '/') { | |
520 | pos++; | |
521 | } | |
522 | if (path[pos] == '\0') { | |
523 | /* last specified element is a device. If it has exactly | |
524 | * one child bus accept it nevertheless */ | |
ed238ba2 MA |
525 | if (dev->num_child_bus == 1) { |
526 | bus = QLIST_FIRST(&dev->child_bus); | |
527 | break; | |
528 | } | |
529 | if (dev->num_child_bus) { | |
d2828429 MA |
530 | error_setg(errp, "Device '%s' has multiple child buses", |
531 | elem); | |
34077326 | 532 | qbus_error_append_bus_list_hint(dev, errp); |
ed238ba2 | 533 | } else { |
d2828429 | 534 | error_setg(errp, "Device '%s' has no child bus", elem); |
ee46d8a5 | 535 | } |
ed238ba2 | 536 | return NULL; |
ee46d8a5 AL |
537 | } |
538 | ||
539 | /* find bus */ | |
540 | if (sscanf(path+pos, "%127[^/]%n", elem, &len) != 1) { | |
dfc6f865 | 541 | g_assert_not_reached(); |
ee46d8a5 AL |
542 | elem[0] = len = 0; |
543 | } | |
544 | pos += len; | |
545 | bus = qbus_find_bus(dev, elem); | |
546 | if (!bus) { | |
d2828429 | 547 | error_setg(errp, "Bus '%s' not found", elem); |
34077326 | 548 | qbus_error_append_bus_list_hint(dev, errp); |
ee46d8a5 AL |
549 | return NULL; |
550 | } | |
551 | } | |
ed238ba2 MA |
552 | |
553 | if (qbus_is_full(bus)) { | |
d2828429 | 554 | error_setg(errp, "Bus '%s' is full", path); |
ed238ba2 MA |
555 | return NULL; |
556 | } | |
557 | return bus; | |
ee46d8a5 AL |
558 | } |
559 | ||
ce49b734 JG |
560 | void qdev_set_id(DeviceState *dev, const char *id) |
561 | { | |
562 | if (id) { | |
563 | dev->id = id; | |
564 | } | |
565 | ||
566 | if (dev->id) { | |
567 | object_property_add_child(qdev_get_peripheral(), dev->id, | |
d2623129 | 568 | OBJECT(dev)); |
ce49b734 JG |
569 | } else { |
570 | static int anon_count; | |
571 | gchar *name = g_strdup_printf("device[%d]", anon_count++); | |
572 | object_property_add_child(qdev_get_peripheral_anon(), name, | |
d2623129 | 573 | OBJECT(dev)); |
ce49b734 JG |
574 | g_free(name); |
575 | } | |
576 | } | |
577 | ||
f3a85056 JF |
578 | static int is_failover_device(void *opaque, const char *name, const char *value, |
579 | Error **errp) | |
580 | { | |
581 | if (strcmp(name, "failover_pair_id") == 0) { | |
582 | QemuOpts *opts = (QemuOpts *)opaque; | |
583 | ||
584 | if (qdev_should_hide_device(opts)) { | |
585 | return 1; | |
586 | } | |
587 | } | |
588 | ||
589 | return 0; | |
590 | } | |
591 | ||
592 | static bool should_hide_device(QemuOpts *opts) | |
593 | { | |
594 | if (qemu_opt_foreach(opts, is_failover_device, opts, NULL) == 0) { | |
595 | return false; | |
596 | } | |
597 | return true; | |
598 | } | |
599 | ||
f006cf7f | 600 | DeviceState *qdev_device_add(QemuOpts *opts, Error **errp) |
ee46d8a5 | 601 | { |
f4d85795 | 602 | DeviceClass *dc; |
ce49b734 | 603 | const char *driver, *path; |
f3a85056 | 604 | DeviceState *dev = NULL; |
2f7bd829 | 605 | BusState *bus = NULL; |
852e2c50 | 606 | Error *err = NULL; |
f3a85056 | 607 | bool hide; |
ee46d8a5 AL |
608 | |
609 | driver = qemu_opt_get(opts, "driver"); | |
610 | if (!driver) { | |
c6bd8c70 | 611 | error_setg(errp, QERR_MISSING_PARAMETER, "driver"); |
ee46d8a5 AL |
612 | return NULL; |
613 | } | |
614 | ||
615 | /* find driver */ | |
f006cf7f MA |
616 | dc = qdev_get_device_class(&driver, errp); |
617 | if (!dc) { | |
7ea5e78f MA |
618 | return NULL; |
619 | } | |
ee46d8a5 AL |
620 | |
621 | /* find bus */ | |
622 | path = qemu_opt_get(opts, "bus"); | |
623 | if (path != NULL) { | |
f006cf7f | 624 | bus = qbus_find(path, errp); |
ee46d8a5 AL |
625 | if (!bus) { |
626 | return NULL; | |
627 | } | |
f4d85795 | 628 | if (!object_dynamic_cast(OBJECT(bus), dc->bus_type)) { |
f006cf7f MA |
629 | error_setg(errp, "Device '%s' can't go on %s bus", |
630 | driver, object_get_typename(OBJECT(bus))); | |
ee46d8a5 AL |
631 | return NULL; |
632 | } | |
f4d85795 AF |
633 | } else if (dc->bus_type != NULL) { |
634 | bus = qbus_find_recursive(sysbus_get_default(), NULL, dc->bus_type); | |
a5ec494e | 635 | if (!bus || qbus_is_full(bus)) { |
f006cf7f MA |
636 | error_setg(errp, "No '%s' bus found for device '%s'", |
637 | dc->bus_type, driver); | |
ee46d8a5 AL |
638 | return NULL; |
639 | } | |
640 | } | |
f3a85056 JF |
641 | hide = should_hide_device(opts); |
642 | ||
643 | if ((hide || qdev_hotplug) && bus && !qbus_is_hotpluggable(bus)) { | |
c6bd8c70 | 644 | error_setg(errp, QERR_BUS_NO_HOTPLUG, bus->name); |
ee46d8a5 AL |
645 | return NULL; |
646 | } | |
647 | ||
f3a85056 JF |
648 | if (hide) { |
649 | return NULL; | |
650 | } | |
651 | ||
b06424de JQ |
652 | if (!migration_is_idle()) { |
653 | error_setg(errp, "device_add not allowed while migrating"); | |
654 | return NULL; | |
655 | } | |
656 | ||
7b030949 | 657 | /* create device */ |
4e3a6778 | 658 | dev = qdev_new(driver); |
2f7bd829 | 659 | |
d2321d31 PX |
660 | /* Check whether the hotplug is allowed by the machine */ |
661 | if (qdev_hotplug && !qdev_hotplug_allowed(dev, &err)) { | |
662 | /* Error must be set in the machine hook */ | |
663 | assert(err); | |
664 | goto err_del_dev; | |
665 | } | |
666 | ||
464a22c7 | 667 | if (!bus && qdev_hotplug && !qdev_get_machine_hotplug_handler(dev)) { |
03fcbd9d TH |
668 | /* No bus, no machine hotplug handler --> device is not hotpluggable */ |
669 | error_setg(&err, "Device '%s' can not be hotplugged on this machine", | |
670 | driver); | |
671 | goto err_del_dev; | |
2f7bd829 | 672 | } |
ee46d8a5 | 673 | |
ce49b734 | 674 | qdev_set_id(dev, qemu_opts_id(opts)); |
52aa17cb | 675 | |
7b030949 | 676 | /* set properties */ |
4caa489d | 677 | if (qemu_opt_foreach(opts, set_property, dev, &err)) { |
58346214 | 678 | goto err_del_dev; |
7b030949 AK |
679 | } |
680 | ||
52aa17cb | 681 | dev->opts = opts; |
118bfd76 | 682 | if (!qdev_realize(DEVICE(dev), bus, &err)) { |
52aa17cb | 683 | dev->opts = NULL; |
58346214 | 684 | goto err_del_dev; |
f424d5c4 | 685 | } |
2bcb0c62 | 686 | return dev; |
58346214 TH |
687 | |
688 | err_del_dev: | |
689 | error_propagate(errp, err); | |
f3a85056 JF |
690 | if (dev) { |
691 | object_unparent(OBJECT(dev)); | |
692 | object_unref(OBJECT(dev)); | |
693 | } | |
58346214 | 694 | return NULL; |
ee46d8a5 AL |
695 | } |
696 | ||
697 | ||
698 | #define qdev_printf(fmt, ...) monitor_printf(mon, "%*s" fmt, indent, "", ## __VA_ARGS__) | |
699 | static void qbus_print(Monitor *mon, BusState *bus, int indent); | |
700 | ||
701 | static void qdev_print_props(Monitor *mon, DeviceState *dev, Property *props, | |
bce54474 | 702 | int indent) |
ee46d8a5 | 703 | { |
ee46d8a5 AL |
704 | if (!props) |
705 | return; | |
d822979b PB |
706 | for (; props->name; props++) { |
707 | Error *err = NULL; | |
708 | char *value; | |
709 | char *legacy_name = g_strdup_printf("legacy-%s", props->name); | |
710 | if (object_property_get_type(OBJECT(dev), legacy_name, NULL)) { | |
711 | value = object_property_get_str(OBJECT(dev), legacy_name, &err); | |
712 | } else { | |
dae3bda4 | 713 | value = object_property_print(OBJECT(dev), props->name, true, &err); |
d822979b PB |
714 | } |
715 | g_free(legacy_name); | |
716 | ||
717 | if (err) { | |
718 | error_free(err); | |
719 | continue; | |
ee46d8a5 | 720 | } |
bce54474 | 721 | qdev_printf("%s = %s\n", props->name, |
d822979b PB |
722 | value && *value ? value : "<null>"); |
723 | g_free(value); | |
ee46d8a5 AL |
724 | } |
725 | } | |
726 | ||
0d936928 AL |
727 | static void bus_print_dev(BusState *bus, Monitor *mon, DeviceState *dev, int indent) |
728 | { | |
729 | BusClass *bc = BUS_GET_CLASS(bus); | |
730 | ||
731 | if (bc->print_dev) { | |
732 | bc->print_dev(mon, dev, indent); | |
733 | } | |
734 | } | |
735 | ||
ee46d8a5 AL |
736 | static void qdev_print(Monitor *mon, DeviceState *dev, int indent) |
737 | { | |
bce54474 | 738 | ObjectClass *class; |
ee46d8a5 | 739 | BusState *child; |
a5f54290 | 740 | NamedGPIOList *ngl; |
9f2ff99c | 741 | NamedClockList *ncl; |
a5f54290 | 742 | |
ee46d8a5 AL |
743 | qdev_printf("dev: %s, id \"%s\"\n", object_get_typename(OBJECT(dev)), |
744 | dev->id ? dev->id : ""); | |
745 | indent += 2; | |
a5f54290 PC |
746 | QLIST_FOREACH(ngl, &dev->gpios, node) { |
747 | if (ngl->num_in) { | |
748 | qdev_printf("gpio-in \"%s\" %d\n", ngl->name ? ngl->name : "", | |
749 | ngl->num_in); | |
750 | } | |
751 | if (ngl->num_out) { | |
752 | qdev_printf("gpio-out \"%s\" %d\n", ngl->name ? ngl->name : "", | |
753 | ngl->num_out); | |
754 | } | |
ee46d8a5 | 755 | } |
9f2ff99c DH |
756 | QLIST_FOREACH(ncl, &dev->clocks, node) { |
757 | qdev_printf("clock-%s%s \"%s\" freq_hz=%e\n", | |
758 | ncl->output ? "out" : "in", | |
759 | ncl->alias ? " (alias)" : "", | |
760 | ncl->name, | |
761 | CLOCK_PERIOD_TO_HZ(1.0 * clock_get(ncl->clock))); | |
762 | } | |
bce54474 PB |
763 | class = object_get_class(OBJECT(dev)); |
764 | do { | |
385d8f22 | 765 | qdev_print_props(mon, dev, DEVICE_CLASS(class)->props_, indent); |
bce54474 PB |
766 | class = object_class_get_parent(class); |
767 | } while (class != object_class_by_name(TYPE_DEVICE)); | |
da9fbe76 | 768 | bus_print_dev(dev->parent_bus, mon, dev, indent); |
ee46d8a5 AL |
769 | QLIST_FOREACH(child, &dev->child_bus, sibling) { |
770 | qbus_print(mon, child, indent); | |
771 | } | |
772 | } | |
773 | ||
774 | static void qbus_print(Monitor *mon, BusState *bus, int indent) | |
775 | { | |
0866aca1 | 776 | BusChild *kid; |
ee46d8a5 AL |
777 | |
778 | qdev_printf("bus: %s\n", bus->name); | |
779 | indent += 2; | |
0d936928 | 780 | qdev_printf("type %s\n", object_get_typename(OBJECT(bus))); |
0866aca1 AL |
781 | QTAILQ_FOREACH(kid, &bus->children, sibling) { |
782 | DeviceState *dev = kid->child; | |
ee46d8a5 AL |
783 | qdev_print(mon, dev, indent); |
784 | } | |
785 | } | |
786 | #undef qdev_printf | |
787 | ||
1ce6be24 | 788 | void hmp_info_qtree(Monitor *mon, const QDict *qdict) |
ee46d8a5 AL |
789 | { |
790 | if (sysbus_get_default()) | |
791 | qbus_print(mon, sysbus_get_default(), 0); | |
792 | } | |
793 | ||
1ce6be24 | 794 | void hmp_info_qdm(Monitor *mon, const QDict *qdict) |
ee46d8a5 | 795 | { |
a3400aee | 796 | qdev_print_devinfos(true); |
ee46d8a5 AL |
797 | } |
798 | ||
485febc6 | 799 | void qmp_device_add(QDict *qdict, QObject **ret_data, Error **errp) |
ee46d8a5 | 800 | { |
4e89978e | 801 | Error *local_err = NULL; |
ee46d8a5 | 802 | QemuOpts *opts; |
b09995ae | 803 | DeviceState *dev; |
ee46d8a5 | 804 | |
4e89978e | 805 | opts = qemu_opts_from_qdict(qemu_find_opts("device"), qdict, &local_err); |
84d18f06 | 806 | if (local_err) { |
485febc6 MA |
807 | error_propagate(errp, local_err); |
808 | return; | |
ee46d8a5 AL |
809 | } |
810 | if (!monitor_cur_is_qmp() && qdev_device_help(opts)) { | |
811 | qemu_opts_del(opts); | |
485febc6 | 812 | return; |
ee46d8a5 | 813 | } |
f006cf7f | 814 | dev = qdev_device_add(opts, &local_err); |
b09995ae | 815 | if (!dev) { |
485febc6 | 816 | error_propagate(errp, local_err); |
ee46d8a5 | 817 | qemu_opts_del(opts); |
485febc6 | 818 | return; |
ee46d8a5 | 819 | } |
b09995ae | 820 | object_unref(OBJECT(dev)); |
ee46d8a5 AL |
821 | } |
822 | ||
6c1db528 | 823 | static DeviceState *find_device_state(const char *id, Error **errp) |
ee46d8a5 | 824 | { |
b6cc36ab | 825 | Object *obj; |
ee46d8a5 | 826 | |
6287d827 DB |
827 | if (id[0] == '/') { |
828 | obj = object_resolve_path(id, NULL); | |
829 | } else { | |
830 | char *root_path = object_get_canonical_path(qdev_get_peripheral()); | |
831 | char *path = g_strdup_printf("%s/%s", root_path, id); | |
832 | ||
833 | g_free(root_path); | |
834 | obj = object_resolve_path_type(path, TYPE_DEVICE, NULL); | |
835 | g_free(path); | |
836 | } | |
b6cc36ab IM |
837 | |
838 | if (!obj) { | |
75158ebb MA |
839 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
840 | "Device '%s' not found", id); | |
6c1db528 | 841 | return NULL; |
56f9107e LC |
842 | } |
843 | ||
6287d827 DB |
844 | if (!object_dynamic_cast(obj, TYPE_DEVICE)) { |
845 | error_setg(errp, "%s is not a hotpluggable device", id); | |
6c1db528 | 846 | return NULL; |
6287d827 DB |
847 | } |
848 | ||
6c1db528 KW |
849 | return DEVICE(obj); |
850 | } | |
851 | ||
32900679 JQ |
852 | void qdev_unplug(DeviceState *dev, Error **errp) |
853 | { | |
854 | DeviceClass *dc = DEVICE_GET_CLASS(dev); | |
855 | HotplugHandler *hotplug_ctrl; | |
856 | HotplugHandlerClass *hdc; | |
07578b0a | 857 | Error *local_err = NULL; |
32900679 JQ |
858 | |
859 | if (dev->parent_bus && !qbus_is_hotpluggable(dev->parent_bus)) { | |
860 | error_setg(errp, QERR_BUS_NO_HOTPLUG, dev->parent_bus->name); | |
861 | return; | |
862 | } | |
863 | ||
864 | if (!dc->hotpluggable) { | |
865 | error_setg(errp, QERR_DEVICE_NO_HOTPLUG, | |
866 | object_get_typename(OBJECT(dev))); | |
867 | return; | |
868 | } | |
869 | ||
a1190ab6 | 870 | if (!migration_is_idle() && !dev->allow_unplug_during_migration) { |
b06424de JQ |
871 | error_setg(errp, "device_del not allowed while migrating"); |
872 | return; | |
873 | } | |
874 | ||
32900679 JQ |
875 | qdev_hot_removed = true; |
876 | ||
877 | hotplug_ctrl = qdev_get_hotplug_handler(dev); | |
878 | /* hotpluggable device MUST have HotplugHandler, if it doesn't | |
879 | * then something is very wrong with it */ | |
880 | g_assert(hotplug_ctrl); | |
881 | ||
882 | /* If device supports async unplug just request it to be done, | |
883 | * otherwise just remove it synchronously */ | |
884 | hdc = HOTPLUG_HANDLER_GET_CLASS(hotplug_ctrl); | |
885 | if (hdc->unplug_request) { | |
07578b0a | 886 | hotplug_handler_unplug_request(hotplug_ctrl, dev, &local_err); |
32900679 | 887 | } else { |
07578b0a DH |
888 | hotplug_handler_unplug(hotplug_ctrl, dev, &local_err); |
889 | if (!local_err) { | |
890 | object_unparent(OBJECT(dev)); | |
891 | } | |
32900679 | 892 | } |
07578b0a | 893 | error_propagate(errp, local_err); |
32900679 JQ |
894 | } |
895 | ||
6c1db528 KW |
896 | void qmp_device_del(const char *id, Error **errp) |
897 | { | |
898 | DeviceState *dev = find_device_state(id, errp); | |
899 | if (dev != NULL) { | |
cce8944c JS |
900 | if (dev->pending_deleted_event) { |
901 | error_setg(errp, "Device %s is already in the " | |
902 | "process of unplug", id); | |
903 | return; | |
904 | } | |
905 | ||
6c1db528 KW |
906 | qdev_unplug(dev, errp); |
907 | } | |
ee46d8a5 AL |
908 | } |
909 | ||
d94bd092 MA |
910 | void hmp_device_add(Monitor *mon, const QDict *qdict) |
911 | { | |
912 | Error *err = NULL; | |
913 | ||
914 | qmp_device_add((QDict *)qdict, NULL, &err); | |
187c6147 | 915 | hmp_handle_error(mon, err); |
d94bd092 MA |
916 | } |
917 | ||
918 | void hmp_device_del(Monitor *mon, const QDict *qdict) | |
919 | { | |
920 | const char *id = qdict_get_str(qdict, "id"); | |
921 | Error *err = NULL; | |
922 | ||
923 | qmp_device_del(id, &err); | |
187c6147 | 924 | hmp_handle_error(mon, err); |
d94bd092 MA |
925 | } |
926 | ||
9680caee KW |
927 | BlockBackend *blk_by_qdev_id(const char *id, Error **errp) |
928 | { | |
929 | DeviceState *dev; | |
930 | BlockBackend *blk; | |
931 | ||
932 | dev = find_device_state(id, errp); | |
933 | if (dev == NULL) { | |
934 | return NULL; | |
935 | } | |
936 | ||
937 | blk = blk_by_dev(dev); | |
938 | if (!blk) { | |
939 | error_setg(errp, "Device does not have a block device backend"); | |
940 | } | |
941 | return blk; | |
942 | } | |
943 | ||
ee46d8a5 AL |
944 | void qdev_machine_init(void) |
945 | { | |
946 | qdev_get_peripheral_anon(); | |
947 | qdev_get_peripheral(); | |
948 | } | |
4d454574 PB |
949 | |
950 | QemuOptsList qemu_device_opts = { | |
951 | .name = "device", | |
952 | .implied_opt_name = "driver", | |
953 | .head = QTAILQ_HEAD_INITIALIZER(qemu_device_opts.head), | |
954 | .desc = { | |
955 | /* | |
956 | * no elements => accept any | |
957 | * sanity checking will happen later | |
958 | * when setting device properties | |
959 | */ | |
960 | { /* end of list */ } | |
961 | }, | |
962 | }; | |
963 | ||
964 | QemuOptsList qemu_global_opts = { | |
965 | .name = "global", | |
966 | .head = QTAILQ_HEAD_INITIALIZER(qemu_global_opts.head), | |
967 | .desc = { | |
968 | { | |
969 | .name = "driver", | |
970 | .type = QEMU_OPT_STRING, | |
971 | },{ | |
972 | .name = "property", | |
973 | .type = QEMU_OPT_STRING, | |
974 | },{ | |
975 | .name = "value", | |
976 | .type = QEMU_OPT_STRING, | |
977 | }, | |
978 | { /* end of list */ } | |
979 | }, | |
980 | }; | |
981 | ||
982 | int qemu_global_option(const char *str) | |
983 | { | |
984 | char driver[64], property[64]; | |
985 | QemuOpts *opts; | |
986 | int rc, offset; | |
987 | ||
3751d7c4 PB |
988 | rc = sscanf(str, "%63[^.=].%63[^=]%n", driver, property, &offset); |
989 | if (rc == 2 && str[offset] == '=') { | |
990 | opts = qemu_opts_create(&qemu_global_opts, NULL, 0, &error_abort); | |
991 | qemu_opt_set(opts, "driver", driver, &error_abort); | |
992 | qemu_opt_set(opts, "property", property, &error_abort); | |
993 | qemu_opt_set(opts, "value", str + offset + 1, &error_abort); | |
994 | return 0; | |
995 | } | |
996 | ||
70b94331 | 997 | opts = qemu_opts_parse_noisily(&qemu_global_opts, str, false); |
3751d7c4 | 998 | if (!opts) { |
4d454574 PB |
999 | return -1; |
1000 | } | |
1001 | ||
4d454574 PB |
1002 | return 0; |
1003 | } |