1 /* 2 * QEMU Management Protocol commands 3 * 4 * Copyright IBM, Corp. 2011 5 * 6 * Authors: 7 * Anthony Liguori <aliguori@us.ibm.com> 8 * 9 * This work is licensed under the terms of the GNU GPL, version 2. See 10 * the COPYING file in the top-level directory. 11 * 12 * Contributions after 2012-01-13 are licensed under the terms of the 13 * GNU GPL, version 2 or (at your option) any later version. 14 */ 15 16 #include "qemu/osdep.h" 17 #include "qemu/cutils.h" 18 #include "qemu/option.h" 19 #include "monitor/monitor.h" 20 #include "sysemu/sysemu.h" 21 #include "qemu/config-file.h" 22 #include "qemu/uuid.h" 23 #include "chardev/char.h" 24 #include "ui/qemu-spice.h" 25 #include "ui/console.h" 26 #include "ui/dbus-display.h" 27 #include "sysemu/kvm.h" 28 #include "sysemu/runstate.h" 29 #include "sysemu/runstate-action.h" 30 #include "sysemu/blockdev.h" 31 #include "sysemu/block-backend.h" 32 #include "qapi/error.h" 33 #include "qapi/qapi-commands-acpi.h" 34 #include "qapi/qapi-commands-block.h" 35 #include "qapi/qapi-commands-control.h" 36 #include "qapi/qapi-commands-machine.h" 37 #include "qapi/qapi-commands-misc.h" 38 #include "qapi/qapi-commands-ui.h" 39 #include "qapi/type-helpers.h" 40 #include "qapi/qmp/qerror.h" 41 #include "exec/ramlist.h" 42 #include "hw/mem/memory-device.h" 43 #include "hw/acpi/acpi_dev_interface.h" 44 #include "hw/intc/intc.h" 45 #include "hw/rdma/rdma.h" 46 47 NameInfo *qmp_query_name(Error **errp) 48 { 49 NameInfo *info = g_malloc0(sizeof(*info)); 50 51 if (qemu_name) { 52 info->has_name = true; 53 info->name = g_strdup(qemu_name); 54 } 55 56 return info; 57 } 58 59 KvmInfo *qmp_query_kvm(Error **errp) 60 { 61 KvmInfo *info = g_malloc0(sizeof(*info)); 62 63 info->enabled = kvm_enabled(); 64 info->present = accel_find("kvm"); 65 66 return info; 67 } 68 69 UuidInfo *qmp_query_uuid(Error **errp) 70 { 71 UuidInfo *info = g_malloc0(sizeof(*info)); 72 73 info->UUID = qemu_uuid_unparse_strdup(&qemu_uuid); 74 return info; 75 } 76 77 void qmp_quit(Error **errp) 78 { 79 shutdown_action = SHUTDOWN_ACTION_POWEROFF; 80 qemu_system_shutdown_request(SHUTDOWN_CAUSE_HOST_QMP_QUIT); 81 } 82 83 void qmp_stop(Error **errp) 84 { 85 /* if there is a dump in background, we should wait until the dump 86 * finished */ 87 if (qemu_system_dump_in_progress()) { 88 error_setg(errp, "There is a dump in process, please wait."); 89 return; 90 } 91 92 if (runstate_check(RUN_STATE_INMIGRATE)) { 93 autostart = 0; 94 } else { 95 vm_stop(RUN_STATE_PAUSED); 96 } 97 } 98 99 void qmp_system_reset(Error **errp) 100 { 101 qemu_system_reset_request(SHUTDOWN_CAUSE_HOST_QMP_SYSTEM_RESET); 102 } 103 104 void qmp_system_powerdown(Error **errp) 105 { 106 qemu_system_powerdown_request(); 107 } 108 109 void qmp_cont(Error **errp) 110 { 111 BlockBackend *blk; 112 BlockJob *job; 113 Error *local_err = NULL; 114 115 /* if there is a dump in background, we should wait until the dump 116 * finished */ 117 if (qemu_system_dump_in_progress()) { 118 error_setg(errp, "There is a dump in process, please wait."); 119 return; 120 } 121 122 if (runstate_needs_reset()) { 123 error_setg(errp, "Resetting the Virtual Machine is required"); 124 return; 125 } else if (runstate_check(RUN_STATE_SUSPENDED)) { 126 return; 127 } else if (runstate_check(RUN_STATE_FINISH_MIGRATE)) { 128 error_setg(errp, "Migration is not finalized yet"); 129 return; 130 } 131 132 for (blk = blk_next(NULL); blk; blk = blk_next(blk)) { 133 blk_iostatus_reset(blk); 134 } 135 136 for (job = block_job_next(NULL); job; job = block_job_next(job)) { 137 block_job_iostatus_reset(job); 138 } 139 140 /* Continuing after completed migration. Images have been inactivated to 141 * allow the destination to take control. Need to get control back now. 142 * 143 * If there are no inactive block nodes (e.g. because the VM was just 144 * paused rather than completing a migration), bdrv_inactivate_all() simply 145 * doesn't do anything. */ 146 bdrv_activate_all(&local_err); 147 if (local_err) { 148 error_propagate(errp, local_err); 149 return; 150 } 151 152 if (runstate_check(RUN_STATE_INMIGRATE)) { 153 autostart = 1; 154 } else { 155 vm_start(); 156 } 157 } 158 159 void qmp_system_wakeup(Error **errp) 160 { 161 if (!qemu_wakeup_suspend_enabled()) { 162 error_setg(errp, 163 "wake-up from suspend is not supported by this guest"); 164 return; 165 } 166 167 qemu_system_wakeup_request(QEMU_WAKEUP_REASON_OTHER, errp); 168 } 169 170 void qmp_set_password(SetPasswordOptions *opts, Error **errp) 171 { 172 int rc; 173 174 if (opts->protocol == DISPLAY_PROTOCOL_SPICE) { 175 if (!qemu_using_spice(errp)) { 176 return; 177 } 178 rc = qemu_spice.set_passwd(opts->password, 179 opts->connected == SET_PASSWORD_ACTION_FAIL, 180 opts->connected == SET_PASSWORD_ACTION_DISCONNECT); 181 } else { 182 assert(opts->protocol == DISPLAY_PROTOCOL_VNC); 183 if (opts->connected != SET_PASSWORD_ACTION_KEEP) { 184 /* vnc supports "connected=keep" only */ 185 error_setg(errp, QERR_INVALID_PARAMETER, "connected"); 186 return; 187 } 188 /* Note that setting an empty password will not disable login through 189 * this interface. */ 190 rc = vnc_display_password(opts->u.vnc.display, opts->password); 191 } 192 193 if (rc != 0) { 194 error_setg(errp, "Could not set password"); 195 } 196 } 197 198 void qmp_expire_password(ExpirePasswordOptions *opts, Error **errp) 199 { 200 time_t when; 201 int rc; 202 const char *whenstr = opts->time; 203 204 if (strcmp(whenstr, "now") == 0) { 205 when = 0; 206 } else if (strcmp(whenstr, "never") == 0) { 207 when = TIME_MAX; 208 } else if (whenstr[0] == '+') { 209 when = time(NULL) + strtoull(whenstr+1, NULL, 10); 210 } else { 211 when = strtoull(whenstr, NULL, 10); 212 } 213 214 if (opts->protocol == DISPLAY_PROTOCOL_SPICE) { 215 if (!qemu_using_spice(errp)) { 216 return; 217 } 218 rc = qemu_spice.set_pw_expire(when); 219 } else { 220 assert(opts->protocol == DISPLAY_PROTOCOL_VNC); 221 rc = vnc_display_pw_expire(opts->u.vnc.display, when); 222 } 223 224 if (rc != 0) { 225 error_setg(errp, "Could not set password expire time"); 226 } 227 } 228 229 #ifdef CONFIG_VNC 230 void qmp_change_vnc_password(const char *password, Error **errp) 231 { 232 if (vnc_display_password(NULL, password) < 0) { 233 error_setg(errp, "Could not set password"); 234 } 235 } 236 #endif 237 238 void qmp_add_client(const char *protocol, const char *fdname, 239 bool has_skipauth, bool skipauth, bool has_tls, bool tls, 240 Error **errp) 241 { 242 Chardev *s; 243 int fd; 244 245 fd = monitor_get_fd(monitor_cur(), fdname, errp); 246 if (fd < 0) { 247 return; 248 } 249 250 if (strcmp(protocol, "spice") == 0) { 251 if (!qemu_using_spice(errp)) { 252 close(fd); 253 return; 254 } 255 skipauth = has_skipauth ? skipauth : false; 256 tls = has_tls ? tls : false; 257 if (qemu_spice.display_add_client(fd, skipauth, tls) < 0) { 258 error_setg(errp, "spice failed to add client"); 259 close(fd); 260 } 261 return; 262 #ifdef CONFIG_VNC 263 } else if (strcmp(protocol, "vnc") == 0) { 264 skipauth = has_skipauth ? skipauth : false; 265 vnc_display_add_client(NULL, fd, skipauth); 266 return; 267 #endif 268 #ifdef CONFIG_DBUS_DISPLAY 269 } else if (strcmp(protocol, "@dbus-display") == 0) { 270 if (!qemu_using_dbus_display(errp)) { 271 close(fd); 272 return; 273 } 274 if (!qemu_dbus_display.add_client(fd, errp)) { 275 close(fd); 276 return; 277 } 278 return; 279 #endif 280 } else if ((s = qemu_chr_find(protocol)) != NULL) { 281 if (qemu_chr_add_client(s, fd) < 0) { 282 error_setg(errp, "failed to add client"); 283 close(fd); 284 return; 285 } 286 return; 287 } 288 289 error_setg(errp, "protocol '%s' is invalid", protocol); 290 close(fd); 291 } 292 293 294 MemoryDeviceInfoList *qmp_query_memory_devices(Error **errp) 295 { 296 return qmp_memory_device_list(); 297 } 298 299 ACPIOSTInfoList *qmp_query_acpi_ospm_status(Error **errp) 300 { 301 bool ambig; 302 ACPIOSTInfoList *head = NULL; 303 ACPIOSTInfoList **prev = &head; 304 Object *obj = object_resolve_path_type("", TYPE_ACPI_DEVICE_IF, &ambig); 305 306 if (obj) { 307 AcpiDeviceIfClass *adevc = ACPI_DEVICE_IF_GET_CLASS(obj); 308 AcpiDeviceIf *adev = ACPI_DEVICE_IF(obj); 309 310 adevc->ospm_status(adev, &prev); 311 } else { 312 error_setg(errp, "command is not supported, missing ACPI device"); 313 } 314 315 return head; 316 } 317 318 MemoryInfo *qmp_query_memory_size_summary(Error **errp) 319 { 320 MemoryInfo *mem_info = g_new0(MemoryInfo, 1); 321 MachineState *ms = MACHINE(qdev_get_machine()); 322 323 mem_info->base_memory = ms->ram_size; 324 325 mem_info->plugged_memory = get_plugged_memory_size(); 326 mem_info->has_plugged_memory = 327 mem_info->plugged_memory != (uint64_t)-1; 328 329 return mem_info; 330 } 331 332 void qmp_display_reload(DisplayReloadOptions *arg, Error **errp) 333 { 334 switch (arg->type) { 335 case DISPLAY_RELOAD_TYPE_VNC: 336 #ifdef CONFIG_VNC 337 if (arg->u.vnc.has_tls_certs && arg->u.vnc.tls_certs) { 338 vnc_display_reload_certs(NULL, errp); 339 } 340 #else 341 error_setg(errp, "vnc is invalid, missing 'CONFIG_VNC'"); 342 #endif 343 break; 344 default: 345 abort(); 346 } 347 } 348 349 static int qmp_x_query_rdma_foreach(Object *obj, void *opaque) 350 { 351 RdmaProvider *rdma; 352 RdmaProviderClass *k; 353 GString *buf = opaque; 354 355 if (object_dynamic_cast(obj, INTERFACE_RDMA_PROVIDER)) { 356 rdma = RDMA_PROVIDER(obj); 357 k = RDMA_PROVIDER_GET_CLASS(obj); 358 if (k->format_statistics) { 359 k->format_statistics(rdma, buf); 360 } else { 361 g_string_append_printf(buf, 362 "RDMA statistics not available for %s.\n", 363 object_get_typename(obj)); 364 } 365 } 366 367 return 0; 368 } 369 370 HumanReadableText *qmp_x_query_rdma(Error **errp) 371 { 372 g_autoptr(GString) buf = g_string_new(""); 373 374 object_child_foreach_recursive(object_get_root(), 375 qmp_x_query_rdma_foreach, buf); 376 377 return human_readable_text_from_str(buf); 378 } 379 380 HumanReadableText *qmp_x_query_ramblock(Error **errp) 381 { 382 g_autoptr(GString) buf = ram_block_format(); 383 384 return human_readable_text_from_str(buf); 385 } 386 387 static int qmp_x_query_irq_foreach(Object *obj, void *opaque) 388 { 389 InterruptStatsProvider *intc; 390 InterruptStatsProviderClass *k; 391 GString *buf = opaque; 392 393 if (object_dynamic_cast(obj, TYPE_INTERRUPT_STATS_PROVIDER)) { 394 intc = INTERRUPT_STATS_PROVIDER(obj); 395 k = INTERRUPT_STATS_PROVIDER_GET_CLASS(obj); 396 uint64_t *irq_counts; 397 unsigned int nb_irqs, i; 398 if (k->get_statistics && 399 k->get_statistics(intc, &irq_counts, &nb_irqs)) { 400 if (nb_irqs > 0) { 401 g_string_append_printf(buf, "IRQ statistics for %s:\n", 402 object_get_typename(obj)); 403 for (i = 0; i < nb_irqs; i++) { 404 if (irq_counts[i] > 0) { 405 g_string_append_printf(buf, "%2d: %" PRId64 "\n", i, 406 irq_counts[i]); 407 } 408 } 409 } 410 } else { 411 g_string_append_printf(buf, 412 "IRQ statistics not available for %s.\n", 413 object_get_typename(obj)); 414 } 415 } 416 417 return 0; 418 } 419 420 HumanReadableText *qmp_x_query_irq(Error **errp) 421 { 422 g_autoptr(GString) buf = g_string_new(""); 423 424 object_child_foreach_recursive(object_get_root(), 425 qmp_x_query_irq_foreach, buf); 426 427 return human_readable_text_from_str(buf); 428 } 429