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-common.h" 18 #include "qemu/cutils.h" 19 #include "qemu/option.h" 20 #include "monitor/monitor.h" 21 #include "sysemu/sysemu.h" 22 #include "qemu/config-file.h" 23 #include "qemu/uuid.h" 24 #include "chardev/char.h" 25 #include "ui/qemu-spice.h" 26 #include "ui/vnc.h" 27 #include "sysemu/kvm.h" 28 #include "sysemu/runstate.h" 29 #include "sysemu/arch_init.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/qmp/qerror.h" 40 #include "hw/mem/memory-device.h" 41 #include "hw/acpi/acpi_dev_interface.h" 42 43 NameInfo *qmp_query_name(Error **errp) 44 { 45 NameInfo *info = g_malloc0(sizeof(*info)); 46 47 if (qemu_name) { 48 info->has_name = true; 49 info->name = g_strdup(qemu_name); 50 } 51 52 return info; 53 } 54 55 KvmInfo *qmp_query_kvm(Error **errp) 56 { 57 KvmInfo *info = g_malloc0(sizeof(*info)); 58 59 info->enabled = kvm_enabled(); 60 info->present = kvm_available(); 61 62 return info; 63 } 64 65 UuidInfo *qmp_query_uuid(Error **errp) 66 { 67 UuidInfo *info = g_malloc0(sizeof(*info)); 68 69 info->UUID = qemu_uuid_unparse_strdup(&qemu_uuid); 70 return info; 71 } 72 73 void qmp_quit(Error **errp) 74 { 75 no_shutdown = 0; 76 qemu_system_shutdown_request(SHUTDOWN_CAUSE_HOST_QMP_QUIT); 77 } 78 79 void qmp_stop(Error **errp) 80 { 81 /* if there is a dump in background, we should wait until the dump 82 * finished */ 83 if (dump_in_progress()) { 84 error_setg(errp, "There is a dump in process, please wait."); 85 return; 86 } 87 88 if (runstate_check(RUN_STATE_INMIGRATE)) { 89 autostart = 0; 90 } else { 91 vm_stop(RUN_STATE_PAUSED); 92 } 93 } 94 95 void qmp_system_reset(Error **errp) 96 { 97 qemu_system_reset_request(SHUTDOWN_CAUSE_HOST_QMP_SYSTEM_RESET); 98 } 99 100 void qmp_system_powerdown(Error **errp) 101 { 102 qemu_system_powerdown_request(); 103 } 104 105 void qmp_cont(Error **errp) 106 { 107 BlockBackend *blk; 108 BlockJob *job; 109 Error *local_err = NULL; 110 111 /* if there is a dump in background, we should wait until the dump 112 * finished */ 113 if (dump_in_progress()) { 114 error_setg(errp, "There is a dump in process, please wait."); 115 return; 116 } 117 118 if (runstate_needs_reset()) { 119 error_setg(errp, "Resetting the Virtual Machine is required"); 120 return; 121 } else if (runstate_check(RUN_STATE_SUSPENDED)) { 122 return; 123 } else if (runstate_check(RUN_STATE_FINISH_MIGRATE)) { 124 error_setg(errp, "Migration is not finalized yet"); 125 return; 126 } 127 128 for (blk = blk_next(NULL); blk; blk = blk_next(blk)) { 129 blk_iostatus_reset(blk); 130 } 131 132 for (job = block_job_next(NULL); job; job = block_job_next(job)) { 133 block_job_iostatus_reset(job); 134 } 135 136 /* Continuing after completed migration. Images have been inactivated to 137 * allow the destination to take control. Need to get control back now. 138 * 139 * If there are no inactive block nodes (e.g. because the VM was just 140 * paused rather than completing a migration), bdrv_inactivate_all() simply 141 * doesn't do anything. */ 142 bdrv_invalidate_cache_all(&local_err); 143 if (local_err) { 144 error_propagate(errp, local_err); 145 return; 146 } 147 148 if (runstate_check(RUN_STATE_INMIGRATE)) { 149 autostart = 1; 150 } else { 151 vm_start(); 152 } 153 } 154 155 void qmp_system_wakeup(Error **errp) 156 { 157 if (!qemu_wakeup_suspend_enabled()) { 158 error_setg(errp, 159 "wake-up from suspend is not supported by this guest"); 160 return; 161 } 162 163 qemu_system_wakeup_request(QEMU_WAKEUP_REASON_OTHER, errp); 164 } 165 166 void qmp_set_password(const char *protocol, const char *password, 167 bool has_connected, const char *connected, Error **errp) 168 { 169 int disconnect_if_connected = 0; 170 int fail_if_connected = 0; 171 int rc; 172 173 if (has_connected) { 174 if (strcmp(connected, "fail") == 0) { 175 fail_if_connected = 1; 176 } else if (strcmp(connected, "disconnect") == 0) { 177 disconnect_if_connected = 1; 178 } else if (strcmp(connected, "keep") == 0) { 179 /* nothing */ 180 } else { 181 error_setg(errp, QERR_INVALID_PARAMETER, "connected"); 182 return; 183 } 184 } 185 186 if (strcmp(protocol, "spice") == 0) { 187 if (!qemu_using_spice(errp)) { 188 return; 189 } 190 rc = qemu_spice.set_passwd(password, fail_if_connected, 191 disconnect_if_connected); 192 } else if (strcmp(protocol, "vnc") == 0) { 193 if (fail_if_connected || disconnect_if_connected) { 194 /* vnc supports "connected=keep" only */ 195 error_setg(errp, QERR_INVALID_PARAMETER, "connected"); 196 return; 197 } 198 /* Note that setting an empty password will not disable login through 199 * this interface. */ 200 rc = vnc_display_password(NULL, password); 201 } else { 202 error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "protocol", 203 "'vnc' or 'spice'"); 204 return; 205 } 206 207 if (rc != 0) { 208 error_setg(errp, "Could not set password"); 209 } 210 } 211 212 void qmp_expire_password(const char *protocol, const char *whenstr, 213 Error **errp) 214 { 215 time_t when; 216 int rc; 217 218 if (strcmp(whenstr, "now") == 0) { 219 when = 0; 220 } else if (strcmp(whenstr, "never") == 0) { 221 when = TIME_MAX; 222 } else if (whenstr[0] == '+') { 223 when = time(NULL) + strtoull(whenstr+1, NULL, 10); 224 } else { 225 when = strtoull(whenstr, NULL, 10); 226 } 227 228 if (strcmp(protocol, "spice") == 0) { 229 if (!qemu_using_spice(errp)) { 230 return; 231 } 232 rc = qemu_spice.set_pw_expire(when); 233 } else if (strcmp(protocol, "vnc") == 0) { 234 rc = vnc_display_pw_expire(NULL, when); 235 } else { 236 error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "protocol", 237 "'vnc' or 'spice'"); 238 return; 239 } 240 241 if (rc != 0) { 242 error_setg(errp, "Could not set password expire time"); 243 } 244 } 245 246 #ifdef CONFIG_VNC 247 void qmp_change_vnc_password(const char *password, Error **errp) 248 { 249 if (vnc_display_password(NULL, password) < 0) { 250 error_setg(errp, "Could not set password"); 251 } 252 } 253 254 static void qmp_change_vnc_listen(const char *target, Error **errp) 255 { 256 QemuOptsList *olist = qemu_find_opts("vnc"); 257 QemuOpts *opts; 258 259 if (strstr(target, "id=")) { 260 error_setg(errp, "id not supported"); 261 return; 262 } 263 264 opts = qemu_opts_find(olist, "default"); 265 if (opts) { 266 qemu_opts_del(opts); 267 } 268 opts = vnc_parse(target, errp); 269 if (!opts) { 270 return; 271 } 272 273 vnc_display_open("default", errp); 274 } 275 276 static void qmp_change_vnc(const char *target, bool has_arg, const char *arg, 277 Error **errp) 278 { 279 if (strcmp(target, "passwd") == 0 || strcmp(target, "password") == 0) { 280 if (!has_arg) { 281 error_setg(errp, QERR_MISSING_PARAMETER, "password"); 282 } else { 283 qmp_change_vnc_password(arg, errp); 284 } 285 } else { 286 qmp_change_vnc_listen(target, errp); 287 } 288 } 289 #endif /* !CONFIG_VNC */ 290 291 void qmp_change(const char *device, const char *target, 292 bool has_arg, const char *arg, Error **errp) 293 { 294 if (strcmp(device, "vnc") == 0) { 295 #ifdef CONFIG_VNC 296 qmp_change_vnc(target, has_arg, arg, errp); 297 #else 298 error_setg(errp, QERR_FEATURE_DISABLED, "vnc"); 299 #endif 300 } else { 301 qmp_blockdev_change_medium(true, device, false, NULL, target, 302 has_arg, arg, false, 0, errp); 303 } 304 } 305 306 void qmp_add_client(const char *protocol, const char *fdname, 307 bool has_skipauth, bool skipauth, bool has_tls, bool tls, 308 Error **errp) 309 { 310 Chardev *s; 311 int fd; 312 313 fd = monitor_get_fd(monitor_cur(), fdname, errp); 314 if (fd < 0) { 315 return; 316 } 317 318 if (strcmp(protocol, "spice") == 0) { 319 if (!qemu_using_spice(errp)) { 320 close(fd); 321 return; 322 } 323 skipauth = has_skipauth ? skipauth : false; 324 tls = has_tls ? tls : false; 325 if (qemu_spice.display_add_client(fd, skipauth, tls) < 0) { 326 error_setg(errp, "spice failed to add client"); 327 close(fd); 328 } 329 return; 330 #ifdef CONFIG_VNC 331 } else if (strcmp(protocol, "vnc") == 0) { 332 skipauth = has_skipauth ? skipauth : false; 333 vnc_display_add_client(NULL, fd, skipauth); 334 return; 335 #endif 336 } else if ((s = qemu_chr_find(protocol)) != NULL) { 337 if (qemu_chr_add_client(s, fd) < 0) { 338 error_setg(errp, "failed to add client"); 339 close(fd); 340 return; 341 } 342 return; 343 } 344 345 error_setg(errp, "protocol '%s' is invalid", protocol); 346 close(fd); 347 } 348 349 350 MemoryDeviceInfoList *qmp_query_memory_devices(Error **errp) 351 { 352 return qmp_memory_device_list(); 353 } 354 355 ACPIOSTInfoList *qmp_query_acpi_ospm_status(Error **errp) 356 { 357 bool ambig; 358 ACPIOSTInfoList *head = NULL; 359 ACPIOSTInfoList **prev = &head; 360 Object *obj = object_resolve_path_type("", TYPE_ACPI_DEVICE_IF, &ambig); 361 362 if (obj) { 363 AcpiDeviceIfClass *adevc = ACPI_DEVICE_IF_GET_CLASS(obj); 364 AcpiDeviceIf *adev = ACPI_DEVICE_IF(obj); 365 366 adevc->ospm_status(adev, &prev); 367 } else { 368 error_setg(errp, "command is not supported, missing ACPI device"); 369 } 370 371 return head; 372 } 373 374 MemoryInfo *qmp_query_memory_size_summary(Error **errp) 375 { 376 MemoryInfo *mem_info = g_malloc0(sizeof(MemoryInfo)); 377 MachineState *ms = MACHINE(qdev_get_machine()); 378 379 mem_info->base_memory = ms->ram_size; 380 381 mem_info->plugged_memory = get_plugged_memory_size(); 382 mem_info->has_plugged_memory = 383 mem_info->plugged_memory != (uint64_t)-1; 384 385 return mem_info; 386 } 387