tests/qapi/doc-good.json: Prepare for qapi-doc Sphinx extension
[qemu.git] / softmmu / vl.c
1 /*
2 * QEMU System Emulator
3 *
4 * Copyright (c) 2003-2008 Fabrice Bellard
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22 * THE SOFTWARE.
23 */
24
25 #include "qemu/osdep.h"
26 #include "qemu-common.h"
27 #include "qemu/units.h"
28 #include "hw/boards.h"
29 #include "hw/qdev-properties.h"
30 #include "qapi/error.h"
31 #include "qemu-version.h"
32 #include "qemu/cutils.h"
33 #include "qemu/help_option.h"
34 #include "qemu/uuid.h"
35 #include "sysemu/reset.h"
36 #include "sysemu/runstate.h"
37 #include "sysemu/seccomp.h"
38 #include "sysemu/tcg.h"
39 #include "sysemu/xen.h"
40
41 #include "qemu/error-report.h"
42 #include "qemu/sockets.h"
43 #include "sysemu/accel.h"
44 #include "hw/usb.h"
45 #include "hw/isa/isa.h"
46 #include "hw/scsi/scsi.h"
47 #include "hw/display/vga.h"
48 #include "sysemu/watchdog.h"
49 #include "hw/firmware/smbios.h"
50 #include "hw/acpi/acpi.h"
51 #include "hw/xen/xen.h"
52 #include "hw/loader.h"
53 #include "monitor/qdev.h"
54 #include "net/net.h"
55 #include "net/slirp.h"
56 #include "monitor/monitor.h"
57 #include "ui/console.h"
58 #include "ui/input.h"
59 #include "sysemu/sysemu.h"
60 #include "sysemu/numa.h"
61 #include "sysemu/hostmem.h"
62 #include "exec/gdbstub.h"
63 #include "qemu/timer.h"
64 #include "chardev/char.h"
65 #include "qemu/bitmap.h"
66 #include "qemu/log.h"
67 #include "sysemu/blockdev.h"
68 #include "hw/block/block.h"
69 #include "migration/misc.h"
70 #include "migration/snapshot.h"
71 #include "migration/global_state.h"
72 #include "sysemu/tpm.h"
73 #include "sysemu/dma.h"
74 #include "hw/audio/soundhw.h"
75 #include "audio/audio.h"
76 #include "sysemu/cpus.h"
77 #include "migration/colo.h"
78 #include "migration/postcopy-ram.h"
79 #include "sysemu/kvm.h"
80 #include "sysemu/hax.h"
81 #include "qapi/qobject-input-visitor.h"
82 #include "qemu/option.h"
83 #include "qemu/config-file.h"
84 #include "qemu-options.h"
85 #include "qemu/main-loop.h"
86 #ifdef CONFIG_VIRTFS
87 #include "fsdev/qemu-fsdev.h"
88 #endif
89 #include "sysemu/qtest.h"
90
91 #include "disas/disas.h"
92
93 #include "trace.h"
94 #include "trace/control.h"
95 #include "qemu/plugin.h"
96 #include "qemu/queue.h"
97 #include "sysemu/arch_init.h"
98
99 #include "ui/qemu-spice.h"
100 #include "qapi/string-input-visitor.h"
101 #include "qapi/opts-visitor.h"
102 #include "qapi/clone-visitor.h"
103 #include "qom/object_interfaces.h"
104 #include "hw/semihosting/semihost.h"
105 #include "crypto/init.h"
106 #include "sysemu/replay.h"
107 #include "qapi/qapi-events-run-state.h"
108 #include "qapi/qapi-visit-block-core.h"
109 #include "qapi/qapi-visit-ui.h"
110 #include "qapi/qapi-commands-block-core.h"
111 #include "qapi/qapi-commands-run-state.h"
112 #include "qapi/qapi-commands-ui.h"
113 #include "qapi/qmp/qerror.h"
114 #include "sysemu/iothread.h"
115 #include "qemu/guest-random.h"
116
117 #define MAX_VIRTIO_CONSOLES 1
118
119 static const char *data_dir[16];
120 static int data_dir_idx;
121 const char *bios_name = NULL;
122 enum vga_retrace_method vga_retrace_method = VGA_RETRACE_DUMB;
123 int display_opengl;
124 const char* keyboard_layout = NULL;
125 ram_addr_t ram_size;
126 bool enable_mlock = false;
127 bool enable_cpu_pm = false;
128 int nb_nics;
129 NICInfo nd_table[MAX_NICS];
130 int autostart;
131 static enum {
132 RTC_BASE_UTC,
133 RTC_BASE_LOCALTIME,
134 RTC_BASE_DATETIME,
135 } rtc_base_type = RTC_BASE_UTC;
136 static time_t rtc_ref_start_datetime;
137 static int rtc_realtime_clock_offset; /* used only with QEMU_CLOCK_REALTIME */
138 static int rtc_host_datetime_offset = -1; /* valid & used only with
139 RTC_BASE_DATETIME */
140 QEMUClockType rtc_clock;
141 int vga_interface_type = VGA_NONE;
142 static DisplayOptions dpy;
143 static int num_serial_hds;
144 static Chardev **serial_hds;
145 Chardev *parallel_hds[MAX_PARALLEL_PORTS];
146 int win2k_install_hack = 0;
147 int singlestep = 0;
148 int no_hpet = 0;
149 int fd_bootchk = 1;
150 static int no_reboot;
151 int no_shutdown = 0;
152 int graphic_rotate = 0;
153 const char *watchdog;
154 QEMUOptionRom option_rom[MAX_OPTION_ROMS];
155 int nb_option_roms;
156 int old_param = 0;
157 const char *qemu_name;
158 int alt_grab = 0;
159 int ctrl_grab = 0;
160 unsigned int nb_prom_envs = 0;
161 const char *prom_envs[MAX_PROM_ENVS];
162 int boot_menu;
163 bool boot_strict;
164 uint8_t *boot_splash_filedata;
165 int only_migratable; /* turn it off unless user states otherwise */
166 bool wakeup_suspend_enabled;
167
168 int icount_align_option;
169
170 /* The bytes in qemu_uuid are in the order specified by RFC4122, _not_ in the
171 * little-endian "wire format" described in the SMBIOS 2.6 specification.
172 */
173 QemuUUID qemu_uuid;
174 bool qemu_uuid_set;
175
176 static NotifierList exit_notifiers =
177 NOTIFIER_LIST_INITIALIZER(exit_notifiers);
178
179 static NotifierList machine_init_done_notifiers =
180 NOTIFIER_LIST_INITIALIZER(machine_init_done_notifiers);
181
182 uint32_t xen_domid;
183 enum xen_mode xen_mode = XEN_EMULATE;
184 bool xen_domid_restrict;
185
186 static int has_defaults = 1;
187 static int default_serial = 1;
188 static int default_parallel = 1;
189 static int default_monitor = 1;
190 static int default_floppy = 1;
191 static int default_cdrom = 1;
192 static int default_sdcard = 1;
193 static int default_vga = 1;
194 static int default_net = 1;
195
196 static struct {
197 const char *driver;
198 int *flag;
199 } default_list[] = {
200 { .driver = "isa-serial", .flag = &default_serial },
201 { .driver = "isa-parallel", .flag = &default_parallel },
202 { .driver = "isa-fdc", .flag = &default_floppy },
203 { .driver = "floppy", .flag = &default_floppy },
204 { .driver = "ide-cd", .flag = &default_cdrom },
205 { .driver = "ide-hd", .flag = &default_cdrom },
206 { .driver = "ide-drive", .flag = &default_cdrom },
207 { .driver = "scsi-cd", .flag = &default_cdrom },
208 { .driver = "scsi-hd", .flag = &default_cdrom },
209 { .driver = "VGA", .flag = &default_vga },
210 { .driver = "isa-vga", .flag = &default_vga },
211 { .driver = "cirrus-vga", .flag = &default_vga },
212 { .driver = "isa-cirrus-vga", .flag = &default_vga },
213 { .driver = "vmware-svga", .flag = &default_vga },
214 { .driver = "qxl-vga", .flag = &default_vga },
215 { .driver = "virtio-vga", .flag = &default_vga },
216 { .driver = "ati-vga", .flag = &default_vga },
217 { .driver = "vhost-user-vga", .flag = &default_vga },
218 };
219
220 static QemuOptsList qemu_rtc_opts = {
221 .name = "rtc",
222 .head = QTAILQ_HEAD_INITIALIZER(qemu_rtc_opts.head),
223 .merge_lists = true,
224 .desc = {
225 {
226 .name = "base",
227 .type = QEMU_OPT_STRING,
228 },{
229 .name = "clock",
230 .type = QEMU_OPT_STRING,
231 },{
232 .name = "driftfix",
233 .type = QEMU_OPT_STRING,
234 },
235 { /* end of list */ }
236 },
237 };
238
239 static QemuOptsList qemu_option_rom_opts = {
240 .name = "option-rom",
241 .implied_opt_name = "romfile",
242 .head = QTAILQ_HEAD_INITIALIZER(qemu_option_rom_opts.head),
243 .desc = {
244 {
245 .name = "bootindex",
246 .type = QEMU_OPT_NUMBER,
247 }, {
248 .name = "romfile",
249 .type = QEMU_OPT_STRING,
250 },
251 { /* end of list */ }
252 },
253 };
254
255 static QemuOptsList qemu_machine_opts = {
256 .name = "machine",
257 .implied_opt_name = "type",
258 .merge_lists = true,
259 .head = QTAILQ_HEAD_INITIALIZER(qemu_machine_opts.head),
260 .desc = {
261 /*
262 * no elements => accept any
263 * sanity checking will happen later
264 * when setting machine properties
265 */
266 { }
267 },
268 };
269
270 static QemuOptsList qemu_accel_opts = {
271 .name = "accel",
272 .implied_opt_name = "accel",
273 .head = QTAILQ_HEAD_INITIALIZER(qemu_accel_opts.head),
274 .desc = {
275 /*
276 * no elements => accept any
277 * sanity checking will happen later
278 * when setting accelerator properties
279 */
280 { }
281 },
282 };
283
284 static QemuOptsList qemu_boot_opts = {
285 .name = "boot-opts",
286 .implied_opt_name = "order",
287 .merge_lists = true,
288 .head = QTAILQ_HEAD_INITIALIZER(qemu_boot_opts.head),
289 .desc = {
290 {
291 .name = "order",
292 .type = QEMU_OPT_STRING,
293 }, {
294 .name = "once",
295 .type = QEMU_OPT_STRING,
296 }, {
297 .name = "menu",
298 .type = QEMU_OPT_BOOL,
299 }, {
300 .name = "splash",
301 .type = QEMU_OPT_STRING,
302 }, {
303 .name = "splash-time",
304 .type = QEMU_OPT_NUMBER,
305 }, {
306 .name = "reboot-timeout",
307 .type = QEMU_OPT_NUMBER,
308 }, {
309 .name = "strict",
310 .type = QEMU_OPT_BOOL,
311 },
312 { /*End of list */ }
313 },
314 };
315
316 static QemuOptsList qemu_add_fd_opts = {
317 .name = "add-fd",
318 .head = QTAILQ_HEAD_INITIALIZER(qemu_add_fd_opts.head),
319 .desc = {
320 {
321 .name = "fd",
322 .type = QEMU_OPT_NUMBER,
323 .help = "file descriptor of which a duplicate is added to fd set",
324 },{
325 .name = "set",
326 .type = QEMU_OPT_NUMBER,
327 .help = "ID of the fd set to add fd to",
328 },{
329 .name = "opaque",
330 .type = QEMU_OPT_STRING,
331 .help = "free-form string used to describe fd",
332 },
333 { /* end of list */ }
334 },
335 };
336
337 static QemuOptsList qemu_object_opts = {
338 .name = "object",
339 .implied_opt_name = "qom-type",
340 .head = QTAILQ_HEAD_INITIALIZER(qemu_object_opts.head),
341 .desc = {
342 { }
343 },
344 };
345
346 static QemuOptsList qemu_tpmdev_opts = {
347 .name = "tpmdev",
348 .implied_opt_name = "type",
349 .head = QTAILQ_HEAD_INITIALIZER(qemu_tpmdev_opts.head),
350 .desc = {
351 /* options are defined in the TPM backends */
352 { /* end of list */ }
353 },
354 };
355
356 static QemuOptsList qemu_realtime_opts = {
357 .name = "realtime",
358 .head = QTAILQ_HEAD_INITIALIZER(qemu_realtime_opts.head),
359 .desc = {
360 {
361 .name = "mlock",
362 .type = QEMU_OPT_BOOL,
363 },
364 { /* end of list */ }
365 },
366 };
367
368 static QemuOptsList qemu_overcommit_opts = {
369 .name = "overcommit",
370 .head = QTAILQ_HEAD_INITIALIZER(qemu_overcommit_opts.head),
371 .desc = {
372 {
373 .name = "mem-lock",
374 .type = QEMU_OPT_BOOL,
375 },
376 {
377 .name = "cpu-pm",
378 .type = QEMU_OPT_BOOL,
379 },
380 { /* end of list */ }
381 },
382 };
383
384 static QemuOptsList qemu_msg_opts = {
385 .name = "msg",
386 .head = QTAILQ_HEAD_INITIALIZER(qemu_msg_opts.head),
387 .desc = {
388 {
389 .name = "timestamp",
390 .type = QEMU_OPT_BOOL,
391 },
392 {
393 .name = "guest-name",
394 .type = QEMU_OPT_BOOL,
395 .help = "Prepends guest name for error messages but only if "
396 "-name guest is set otherwise option is ignored\n",
397 },
398 { /* end of list */ }
399 },
400 };
401
402 static QemuOptsList qemu_name_opts = {
403 .name = "name",
404 .implied_opt_name = "guest",
405 .merge_lists = true,
406 .head = QTAILQ_HEAD_INITIALIZER(qemu_name_opts.head),
407 .desc = {
408 {
409 .name = "guest",
410 .type = QEMU_OPT_STRING,
411 .help = "Sets the name of the guest.\n"
412 "This name will be displayed in the SDL window caption.\n"
413 "The name will also be used for the VNC server",
414 }, {
415 .name = "process",
416 .type = QEMU_OPT_STRING,
417 .help = "Sets the name of the QEMU process, as shown in top etc",
418 }, {
419 .name = "debug-threads",
420 .type = QEMU_OPT_BOOL,
421 .help = "When enabled, name the individual threads; defaults off.\n"
422 "NOTE: The thread names are for debugging and not a\n"
423 "stable API.",
424 },
425 { /* End of list */ }
426 },
427 };
428
429 static QemuOptsList qemu_mem_opts = {
430 .name = "memory",
431 .implied_opt_name = "size",
432 .head = QTAILQ_HEAD_INITIALIZER(qemu_mem_opts.head),
433 .merge_lists = true,
434 .desc = {
435 {
436 .name = "size",
437 .type = QEMU_OPT_SIZE,
438 },
439 {
440 .name = "slots",
441 .type = QEMU_OPT_NUMBER,
442 },
443 {
444 .name = "maxmem",
445 .type = QEMU_OPT_SIZE,
446 },
447 { /* end of list */ }
448 },
449 };
450
451 static QemuOptsList qemu_icount_opts = {
452 .name = "icount",
453 .implied_opt_name = "shift",
454 .merge_lists = true,
455 .head = QTAILQ_HEAD_INITIALIZER(qemu_icount_opts.head),
456 .desc = {
457 {
458 .name = "shift",
459 .type = QEMU_OPT_STRING,
460 }, {
461 .name = "align",
462 .type = QEMU_OPT_BOOL,
463 }, {
464 .name = "sleep",
465 .type = QEMU_OPT_BOOL,
466 }, {
467 .name = "rr",
468 .type = QEMU_OPT_STRING,
469 }, {
470 .name = "rrfile",
471 .type = QEMU_OPT_STRING,
472 }, {
473 .name = "rrsnapshot",
474 .type = QEMU_OPT_STRING,
475 },
476 { /* end of list */ }
477 },
478 };
479
480 static QemuOptsList qemu_fw_cfg_opts = {
481 .name = "fw_cfg",
482 .implied_opt_name = "name",
483 .head = QTAILQ_HEAD_INITIALIZER(qemu_fw_cfg_opts.head),
484 .desc = {
485 {
486 .name = "name",
487 .type = QEMU_OPT_STRING,
488 .help = "Sets the fw_cfg name of the blob to be inserted",
489 }, {
490 .name = "file",
491 .type = QEMU_OPT_STRING,
492 .help = "Sets the name of the file from which "
493 "the fw_cfg blob will be loaded",
494 }, {
495 .name = "string",
496 .type = QEMU_OPT_STRING,
497 .help = "Sets content of the blob to be inserted from a string",
498 }, {
499 .name = "gen_id",
500 .type = QEMU_OPT_STRING,
501 .help = "Sets id of the object generating the fw_cfg blob "
502 "to be inserted",
503 },
504 { /* end of list */ }
505 },
506 };
507
508 /**
509 * Get machine options
510 *
511 * Returns: machine options (never null).
512 */
513 QemuOpts *qemu_get_machine_opts(void)
514 {
515 return qemu_find_opts_singleton("machine");
516 }
517
518 const char *qemu_get_vm_name(void)
519 {
520 return qemu_name;
521 }
522
523 static void res_free(void)
524 {
525 g_free(boot_splash_filedata);
526 boot_splash_filedata = NULL;
527 }
528
529 static int default_driver_check(void *opaque, QemuOpts *opts, Error **errp)
530 {
531 const char *driver = qemu_opt_get(opts, "driver");
532 int i;
533
534 if (!driver)
535 return 0;
536 for (i = 0; i < ARRAY_SIZE(default_list); i++) {
537 if (strcmp(default_list[i].driver, driver) != 0)
538 continue;
539 *(default_list[i].flag) = 0;
540 }
541 return 0;
542 }
543
544 /***********************************************************/
545 /* QEMU state */
546
547 static RunState current_run_state = RUN_STATE_PRECONFIG;
548
549 /* We use RUN_STATE__MAX but any invalid value will do */
550 static RunState vmstop_requested = RUN_STATE__MAX;
551 static QemuMutex vmstop_lock;
552
553 typedef struct {
554 RunState from;
555 RunState to;
556 } RunStateTransition;
557
558 static const RunStateTransition runstate_transitions_def[] = {
559 /* from -> to */
560 { RUN_STATE_PRECONFIG, RUN_STATE_PRELAUNCH },
561 /* Early switch to inmigrate state to allow -incoming CLI option work
562 * as it used to. TODO: delay actual switching to inmigrate state to
563 * the point after machine is built and remove this hack.
564 */
565 { RUN_STATE_PRECONFIG, RUN_STATE_INMIGRATE },
566
567 { RUN_STATE_DEBUG, RUN_STATE_RUNNING },
568 { RUN_STATE_DEBUG, RUN_STATE_FINISH_MIGRATE },
569 { RUN_STATE_DEBUG, RUN_STATE_PRELAUNCH },
570
571 { RUN_STATE_INMIGRATE, RUN_STATE_INTERNAL_ERROR },
572 { RUN_STATE_INMIGRATE, RUN_STATE_IO_ERROR },
573 { RUN_STATE_INMIGRATE, RUN_STATE_PAUSED },
574 { RUN_STATE_INMIGRATE, RUN_STATE_RUNNING },
575 { RUN_STATE_INMIGRATE, RUN_STATE_SHUTDOWN },
576 { RUN_STATE_INMIGRATE, RUN_STATE_SUSPENDED },
577 { RUN_STATE_INMIGRATE, RUN_STATE_WATCHDOG },
578 { RUN_STATE_INMIGRATE, RUN_STATE_GUEST_PANICKED },
579 { RUN_STATE_INMIGRATE, RUN_STATE_FINISH_MIGRATE },
580 { RUN_STATE_INMIGRATE, RUN_STATE_PRELAUNCH },
581 { RUN_STATE_INMIGRATE, RUN_STATE_POSTMIGRATE },
582 { RUN_STATE_INMIGRATE, RUN_STATE_COLO },
583
584 { RUN_STATE_INTERNAL_ERROR, RUN_STATE_PAUSED },
585 { RUN_STATE_INTERNAL_ERROR, RUN_STATE_FINISH_MIGRATE },
586 { RUN_STATE_INTERNAL_ERROR, RUN_STATE_PRELAUNCH },
587
588 { RUN_STATE_IO_ERROR, RUN_STATE_RUNNING },
589 { RUN_STATE_IO_ERROR, RUN_STATE_FINISH_MIGRATE },
590 { RUN_STATE_IO_ERROR, RUN_STATE_PRELAUNCH },
591
592 { RUN_STATE_PAUSED, RUN_STATE_RUNNING },
593 { RUN_STATE_PAUSED, RUN_STATE_FINISH_MIGRATE },
594 { RUN_STATE_PAUSED, RUN_STATE_POSTMIGRATE },
595 { RUN_STATE_PAUSED, RUN_STATE_PRELAUNCH },
596 { RUN_STATE_PAUSED, RUN_STATE_COLO},
597
598 { RUN_STATE_POSTMIGRATE, RUN_STATE_RUNNING },
599 { RUN_STATE_POSTMIGRATE, RUN_STATE_FINISH_MIGRATE },
600 { RUN_STATE_POSTMIGRATE, RUN_STATE_PRELAUNCH },
601
602 { RUN_STATE_PRELAUNCH, RUN_STATE_RUNNING },
603 { RUN_STATE_PRELAUNCH, RUN_STATE_FINISH_MIGRATE },
604 { RUN_STATE_PRELAUNCH, RUN_STATE_INMIGRATE },
605
606 { RUN_STATE_FINISH_MIGRATE, RUN_STATE_RUNNING },
607 { RUN_STATE_FINISH_MIGRATE, RUN_STATE_PAUSED },
608 { RUN_STATE_FINISH_MIGRATE, RUN_STATE_POSTMIGRATE },
609 { RUN_STATE_FINISH_MIGRATE, RUN_STATE_PRELAUNCH },
610 { RUN_STATE_FINISH_MIGRATE, RUN_STATE_COLO},
611
612 { RUN_STATE_RESTORE_VM, RUN_STATE_RUNNING },
613 { RUN_STATE_RESTORE_VM, RUN_STATE_PRELAUNCH },
614
615 { RUN_STATE_COLO, RUN_STATE_RUNNING },
616
617 { RUN_STATE_RUNNING, RUN_STATE_DEBUG },
618 { RUN_STATE_RUNNING, RUN_STATE_INTERNAL_ERROR },
619 { RUN_STATE_RUNNING, RUN_STATE_IO_ERROR },
620 { RUN_STATE_RUNNING, RUN_STATE_PAUSED },
621 { RUN_STATE_RUNNING, RUN_STATE_FINISH_MIGRATE },
622 { RUN_STATE_RUNNING, RUN_STATE_RESTORE_VM },
623 { RUN_STATE_RUNNING, RUN_STATE_SAVE_VM },
624 { RUN_STATE_RUNNING, RUN_STATE_SHUTDOWN },
625 { RUN_STATE_RUNNING, RUN_STATE_WATCHDOG },
626 { RUN_STATE_RUNNING, RUN_STATE_GUEST_PANICKED },
627 { RUN_STATE_RUNNING, RUN_STATE_COLO},
628
629 { RUN_STATE_SAVE_VM, RUN_STATE_RUNNING },
630
631 { RUN_STATE_SHUTDOWN, RUN_STATE_PAUSED },
632 { RUN_STATE_SHUTDOWN, RUN_STATE_FINISH_MIGRATE },
633 { RUN_STATE_SHUTDOWN, RUN_STATE_PRELAUNCH },
634
635 { RUN_STATE_DEBUG, RUN_STATE_SUSPENDED },
636 { RUN_STATE_RUNNING, RUN_STATE_SUSPENDED },
637 { RUN_STATE_SUSPENDED, RUN_STATE_RUNNING },
638 { RUN_STATE_SUSPENDED, RUN_STATE_FINISH_MIGRATE },
639 { RUN_STATE_SUSPENDED, RUN_STATE_PRELAUNCH },
640 { RUN_STATE_SUSPENDED, RUN_STATE_COLO},
641
642 { RUN_STATE_WATCHDOG, RUN_STATE_RUNNING },
643 { RUN_STATE_WATCHDOG, RUN_STATE_FINISH_MIGRATE },
644 { RUN_STATE_WATCHDOG, RUN_STATE_PRELAUNCH },
645 { RUN_STATE_WATCHDOG, RUN_STATE_COLO},
646
647 { RUN_STATE_GUEST_PANICKED, RUN_STATE_RUNNING },
648 { RUN_STATE_GUEST_PANICKED, RUN_STATE_FINISH_MIGRATE },
649 { RUN_STATE_GUEST_PANICKED, RUN_STATE_PRELAUNCH },
650
651 { RUN_STATE__MAX, RUN_STATE__MAX },
652 };
653
654 static bool runstate_valid_transitions[RUN_STATE__MAX][RUN_STATE__MAX];
655
656 bool runstate_check(RunState state)
657 {
658 return current_run_state == state;
659 }
660
661 bool runstate_store(char *str, size_t size)
662 {
663 const char *state = RunState_str(current_run_state);
664 size_t len = strlen(state) + 1;
665
666 if (len > size) {
667 return false;
668 }
669 memcpy(str, state, len);
670 return true;
671 }
672
673 static void runstate_init(void)
674 {
675 const RunStateTransition *p;
676
677 memset(&runstate_valid_transitions, 0, sizeof(runstate_valid_transitions));
678 for (p = &runstate_transitions_def[0]; p->from != RUN_STATE__MAX; p++) {
679 runstate_valid_transitions[p->from][p->to] = true;
680 }
681
682 qemu_mutex_init(&vmstop_lock);
683 }
684
685 /* This function will abort() on invalid state transitions */
686 void runstate_set(RunState new_state)
687 {
688 assert(new_state < RUN_STATE__MAX);
689
690 trace_runstate_set(current_run_state, RunState_str(current_run_state),
691 new_state, RunState_str(new_state));
692
693 if (current_run_state == new_state) {
694 return;
695 }
696
697 if (!runstate_valid_transitions[current_run_state][new_state]) {
698 error_report("invalid runstate transition: '%s' -> '%s'",
699 RunState_str(current_run_state),
700 RunState_str(new_state));
701 abort();
702 }
703
704 current_run_state = new_state;
705 }
706
707 int runstate_is_running(void)
708 {
709 return runstate_check(RUN_STATE_RUNNING);
710 }
711
712 bool runstate_needs_reset(void)
713 {
714 return runstate_check(RUN_STATE_INTERNAL_ERROR) ||
715 runstate_check(RUN_STATE_SHUTDOWN);
716 }
717
718 StatusInfo *qmp_query_status(Error **errp)
719 {
720 StatusInfo *info = g_malloc0(sizeof(*info));
721
722 info->running = runstate_is_running();
723 info->singlestep = singlestep;
724 info->status = current_run_state;
725
726 return info;
727 }
728
729 bool qemu_vmstop_requested(RunState *r)
730 {
731 qemu_mutex_lock(&vmstop_lock);
732 *r = vmstop_requested;
733 vmstop_requested = RUN_STATE__MAX;
734 qemu_mutex_unlock(&vmstop_lock);
735 return *r < RUN_STATE__MAX;
736 }
737
738 void qemu_system_vmstop_request_prepare(void)
739 {
740 qemu_mutex_lock(&vmstop_lock);
741 }
742
743 void qemu_system_vmstop_request(RunState state)
744 {
745 vmstop_requested = state;
746 qemu_mutex_unlock(&vmstop_lock);
747 qemu_notify_event();
748 }
749
750 /***********************************************************/
751 /* RTC reference time/date access */
752 static time_t qemu_ref_timedate(QEMUClockType clock)
753 {
754 time_t value = qemu_clock_get_ms(clock) / 1000;
755 switch (clock) {
756 case QEMU_CLOCK_REALTIME:
757 value -= rtc_realtime_clock_offset;
758 /* fall through */
759 case QEMU_CLOCK_VIRTUAL:
760 value += rtc_ref_start_datetime;
761 break;
762 case QEMU_CLOCK_HOST:
763 if (rtc_base_type == RTC_BASE_DATETIME) {
764 value -= rtc_host_datetime_offset;
765 }
766 break;
767 default:
768 assert(0);
769 }
770 return value;
771 }
772
773 void qemu_get_timedate(struct tm *tm, int offset)
774 {
775 time_t ti = qemu_ref_timedate(rtc_clock);
776
777 ti += offset;
778
779 switch (rtc_base_type) {
780 case RTC_BASE_DATETIME:
781 case RTC_BASE_UTC:
782 gmtime_r(&ti, tm);
783 break;
784 case RTC_BASE_LOCALTIME:
785 localtime_r(&ti, tm);
786 break;
787 }
788 }
789
790 int qemu_timedate_diff(struct tm *tm)
791 {
792 time_t seconds;
793
794 switch (rtc_base_type) {
795 case RTC_BASE_DATETIME:
796 case RTC_BASE_UTC:
797 seconds = mktimegm(tm);
798 break;
799 case RTC_BASE_LOCALTIME:
800 {
801 struct tm tmp = *tm;
802 tmp.tm_isdst = -1; /* use timezone to figure it out */
803 seconds = mktime(&tmp);
804 break;
805 }
806 default:
807 abort();
808 }
809
810 return seconds - qemu_ref_timedate(QEMU_CLOCK_HOST);
811 }
812
813 static void configure_rtc_base_datetime(const char *startdate)
814 {
815 time_t rtc_start_datetime;
816 struct tm tm;
817
818 if (sscanf(startdate, "%d-%d-%dT%d:%d:%d", &tm.tm_year, &tm.tm_mon,
819 &tm.tm_mday, &tm.tm_hour, &tm.tm_min, &tm.tm_sec) == 6) {
820 /* OK */
821 } else if (sscanf(startdate, "%d-%d-%d",
822 &tm.tm_year, &tm.tm_mon, &tm.tm_mday) == 3) {
823 tm.tm_hour = 0;
824 tm.tm_min = 0;
825 tm.tm_sec = 0;
826 } else {
827 goto date_fail;
828 }
829 tm.tm_year -= 1900;
830 tm.tm_mon--;
831 rtc_start_datetime = mktimegm(&tm);
832 if (rtc_start_datetime == -1) {
833 date_fail:
834 error_report("invalid datetime format");
835 error_printf("valid formats: "
836 "'2006-06-17T16:01:21' or '2006-06-17'\n");
837 exit(1);
838 }
839 rtc_host_datetime_offset = rtc_ref_start_datetime - rtc_start_datetime;
840 rtc_ref_start_datetime = rtc_start_datetime;
841 }
842
843 static void configure_rtc(QemuOpts *opts)
844 {
845 const char *value;
846
847 /* Set defaults */
848 rtc_clock = QEMU_CLOCK_HOST;
849 rtc_ref_start_datetime = qemu_clock_get_ms(QEMU_CLOCK_HOST) / 1000;
850 rtc_realtime_clock_offset = qemu_clock_get_ms(QEMU_CLOCK_REALTIME) / 1000;
851
852 value = qemu_opt_get(opts, "base");
853 if (value) {
854 if (!strcmp(value, "utc")) {
855 rtc_base_type = RTC_BASE_UTC;
856 } else if (!strcmp(value, "localtime")) {
857 Error *blocker = NULL;
858 rtc_base_type = RTC_BASE_LOCALTIME;
859 error_setg(&blocker, QERR_REPLAY_NOT_SUPPORTED,
860 "-rtc base=localtime");
861 replay_add_blocker(blocker);
862 } else {
863 rtc_base_type = RTC_BASE_DATETIME;
864 configure_rtc_base_datetime(value);
865 }
866 }
867 value = qemu_opt_get(opts, "clock");
868 if (value) {
869 if (!strcmp(value, "host")) {
870 rtc_clock = QEMU_CLOCK_HOST;
871 } else if (!strcmp(value, "rt")) {
872 rtc_clock = QEMU_CLOCK_REALTIME;
873 } else if (!strcmp(value, "vm")) {
874 rtc_clock = QEMU_CLOCK_VIRTUAL;
875 } else {
876 error_report("invalid option value '%s'", value);
877 exit(1);
878 }
879 }
880 value = qemu_opt_get(opts, "driftfix");
881 if (value) {
882 if (!strcmp(value, "slew")) {
883 object_register_sugar_prop("mc146818rtc",
884 "lost_tick_policy",
885 "slew");
886 } else if (!strcmp(value, "none")) {
887 /* discard is default */
888 } else {
889 error_report("invalid option value '%s'", value);
890 exit(1);
891 }
892 }
893 }
894
895 static int parse_name(void *opaque, QemuOpts *opts, Error **errp)
896 {
897 const char *proc_name;
898
899 if (qemu_opt_get(opts, "debug-threads")) {
900 qemu_thread_naming(qemu_opt_get_bool(opts, "debug-threads", false));
901 }
902 qemu_name = qemu_opt_get(opts, "guest");
903
904 proc_name = qemu_opt_get(opts, "process");
905 if (proc_name) {
906 os_set_proc_name(proc_name);
907 }
908
909 return 0;
910 }
911
912 bool defaults_enabled(void)
913 {
914 return has_defaults;
915 }
916
917 #ifndef _WIN32
918 static int parse_add_fd(void *opaque, QemuOpts *opts, Error **errp)
919 {
920 int fd, dupfd, flags;
921 int64_t fdset_id;
922 const char *fd_opaque = NULL;
923 AddfdInfo *fdinfo;
924
925 fd = qemu_opt_get_number(opts, "fd", -1);
926 fdset_id = qemu_opt_get_number(opts, "set", -1);
927 fd_opaque = qemu_opt_get(opts, "opaque");
928
929 if (fd < 0) {
930 error_setg(errp, "fd option is required and must be non-negative");
931 return -1;
932 }
933
934 if (fd <= STDERR_FILENO) {
935 error_setg(errp, "fd cannot be a standard I/O stream");
936 return -1;
937 }
938
939 /*
940 * All fds inherited across exec() necessarily have FD_CLOEXEC
941 * clear, while qemu sets FD_CLOEXEC on all other fds used internally.
942 */
943 flags = fcntl(fd, F_GETFD);
944 if (flags == -1 || (flags & FD_CLOEXEC)) {
945 error_setg(errp, "fd is not valid or already in use");
946 return -1;
947 }
948
949 if (fdset_id < 0) {
950 error_setg(errp, "set option is required and must be non-negative");
951 return -1;
952 }
953
954 #ifdef F_DUPFD_CLOEXEC
955 dupfd = fcntl(fd, F_DUPFD_CLOEXEC, 0);
956 #else
957 dupfd = dup(fd);
958 if (dupfd != -1) {
959 qemu_set_cloexec(dupfd);
960 }
961 #endif
962 if (dupfd == -1) {
963 error_setg(errp, "error duplicating fd: %s", strerror(errno));
964 return -1;
965 }
966
967 /* add the duplicate fd, and optionally the opaque string, to the fd set */
968 fdinfo = monitor_fdset_add_fd(dupfd, true, fdset_id, !!fd_opaque, fd_opaque,
969 &error_abort);
970 g_free(fdinfo);
971
972 return 0;
973 }
974
975 static int cleanup_add_fd(void *opaque, QemuOpts *opts, Error **errp)
976 {
977 int fd;
978
979 fd = qemu_opt_get_number(opts, "fd", -1);
980 close(fd);
981
982 return 0;
983 }
984 #endif
985
986 /***********************************************************/
987 /* QEMU Block devices */
988
989 #define HD_OPTS "media=disk"
990 #define CDROM_OPTS "media=cdrom"
991 #define FD_OPTS ""
992 #define PFLASH_OPTS ""
993 #define MTD_OPTS ""
994 #define SD_OPTS ""
995
996 static int drive_init_func(void *opaque, QemuOpts *opts, Error **errp)
997 {
998 BlockInterfaceType *block_default_type = opaque;
999
1000 return drive_new(opts, *block_default_type, errp) == NULL;
1001 }
1002
1003 static int drive_enable_snapshot(void *opaque, QemuOpts *opts, Error **errp)
1004 {
1005 if (qemu_opt_get(opts, "snapshot") == NULL) {
1006 qemu_opt_set(opts, "snapshot", "on", &error_abort);
1007 }
1008 return 0;
1009 }
1010
1011 static void default_drive(int enable, int snapshot, BlockInterfaceType type,
1012 int index, const char *optstr)
1013 {
1014 QemuOpts *opts;
1015 DriveInfo *dinfo;
1016
1017 if (!enable || drive_get_by_index(type, index)) {
1018 return;
1019 }
1020
1021 opts = drive_add(type, index, NULL, optstr);
1022 if (snapshot) {
1023 drive_enable_snapshot(NULL, opts, NULL);
1024 }
1025
1026 dinfo = drive_new(opts, type, &error_abort);
1027 dinfo->is_default = true;
1028
1029 }
1030
1031 typedef struct BlockdevOptionsQueueEntry {
1032 BlockdevOptions *bdo;
1033 Location loc;
1034 QSIMPLEQ_ENTRY(BlockdevOptionsQueueEntry) entry;
1035 } BlockdevOptionsQueueEntry;
1036
1037 typedef QSIMPLEQ_HEAD(, BlockdevOptionsQueueEntry) BlockdevOptionsQueue;
1038
1039 static void configure_blockdev(BlockdevOptionsQueue *bdo_queue,
1040 MachineClass *machine_class, int snapshot)
1041 {
1042 /*
1043 * If the currently selected machine wishes to override the
1044 * units-per-bus property of its default HBA interface type, do so
1045 * now.
1046 */
1047 if (machine_class->units_per_default_bus) {
1048 override_max_devs(machine_class->block_default_type,
1049 machine_class->units_per_default_bus);
1050 }
1051
1052 /* open the virtual block devices */
1053 while (!QSIMPLEQ_EMPTY(bdo_queue)) {
1054 BlockdevOptionsQueueEntry *bdo = QSIMPLEQ_FIRST(bdo_queue);
1055
1056 QSIMPLEQ_REMOVE_HEAD(bdo_queue, entry);
1057 loc_push_restore(&bdo->loc);
1058 qmp_blockdev_add(bdo->bdo, &error_fatal);
1059 loc_pop(&bdo->loc);
1060 qapi_free_BlockdevOptions(bdo->bdo);
1061 g_free(bdo);
1062 }
1063 if (snapshot) {
1064 qemu_opts_foreach(qemu_find_opts("drive"), drive_enable_snapshot,
1065 NULL, NULL);
1066 }
1067 if (qemu_opts_foreach(qemu_find_opts("drive"), drive_init_func,
1068 &machine_class->block_default_type, &error_fatal)) {
1069 /* We printed help */
1070 exit(0);
1071 }
1072
1073 default_drive(default_cdrom, snapshot, machine_class->block_default_type, 2,
1074 CDROM_OPTS);
1075 default_drive(default_floppy, snapshot, IF_FLOPPY, 0, FD_OPTS);
1076 default_drive(default_sdcard, snapshot, IF_SD, 0, SD_OPTS);
1077
1078 }
1079
1080 static QemuOptsList qemu_smp_opts = {
1081 .name = "smp-opts",
1082 .implied_opt_name = "cpus",
1083 .merge_lists = true,
1084 .head = QTAILQ_HEAD_INITIALIZER(qemu_smp_opts.head),
1085 .desc = {
1086 {
1087 .name = "cpus",
1088 .type = QEMU_OPT_NUMBER,
1089 }, {
1090 .name = "sockets",
1091 .type = QEMU_OPT_NUMBER,
1092 }, {
1093 .name = "dies",
1094 .type = QEMU_OPT_NUMBER,
1095 }, {
1096 .name = "cores",
1097 .type = QEMU_OPT_NUMBER,
1098 }, {
1099 .name = "threads",
1100 .type = QEMU_OPT_NUMBER,
1101 }, {
1102 .name = "maxcpus",
1103 .type = QEMU_OPT_NUMBER,
1104 },
1105 { /*End of list */ }
1106 },
1107 };
1108
1109 static void realtime_init(void)
1110 {
1111 if (enable_mlock) {
1112 if (os_mlock() < 0) {
1113 error_report("locking memory failed");
1114 exit(1);
1115 }
1116 }
1117 }
1118
1119
1120 static void configure_msg(QemuOpts *opts)
1121 {
1122 error_with_timestamp = qemu_opt_get_bool(opts, "timestamp", false);
1123 error_with_guestname = qemu_opt_get_bool(opts, "guest-name", false);
1124 }
1125
1126
1127 /***********************************************************/
1128 /* USB devices */
1129
1130 static int usb_device_add(const char *devname)
1131 {
1132 USBDevice *dev = NULL;
1133
1134 if (!machine_usb(current_machine)) {
1135 return -1;
1136 }
1137
1138 dev = usbdevice_create(devname);
1139 if (!dev)
1140 return -1;
1141
1142 return 0;
1143 }
1144
1145 static int usb_parse(const char *cmdline)
1146 {
1147 int r;
1148 r = usb_device_add(cmdline);
1149 if (r < 0) {
1150 error_report("could not add USB device '%s'", cmdline);
1151 }
1152 return r;
1153 }
1154
1155 /***********************************************************/
1156 /* machine registration */
1157
1158 MachineState *current_machine;
1159
1160 static MachineClass *find_machine(const char *name, GSList *machines)
1161 {
1162 GSList *el;
1163
1164 for (el = machines; el; el = el->next) {
1165 MachineClass *mc = el->data;
1166
1167 if (!strcmp(mc->name, name) || !g_strcmp0(mc->alias, name)) {
1168 return mc;
1169 }
1170 }
1171
1172 return NULL;
1173 }
1174
1175 static MachineClass *find_default_machine(GSList *machines)
1176 {
1177 GSList *el;
1178 MachineClass *default_machineclass = NULL;
1179
1180 for (el = machines; el; el = el->next) {
1181 MachineClass *mc = el->data;
1182
1183 if (mc->is_default) {
1184 assert(default_machineclass == NULL && "Multiple default machines");
1185 default_machineclass = mc;
1186 }
1187 }
1188
1189 return default_machineclass;
1190 }
1191
1192 static int machine_help_func(QemuOpts *opts, MachineState *machine)
1193 {
1194 ObjectProperty *prop;
1195 ObjectPropertyIterator iter;
1196
1197 if (!qemu_opt_has_help_opt(opts)) {
1198 return 0;
1199 }
1200
1201 object_property_iter_init(&iter, OBJECT(machine));
1202 while ((prop = object_property_iter_next(&iter))) {
1203 if (!prop->set) {
1204 continue;
1205 }
1206
1207 printf("%s.%s=%s", MACHINE_GET_CLASS(machine)->name,
1208 prop->name, prop->type);
1209 if (prop->description) {
1210 printf(" (%s)\n", prop->description);
1211 } else {
1212 printf("\n");
1213 }
1214 }
1215
1216 return 1;
1217 }
1218
1219 struct VMChangeStateEntry {
1220 VMChangeStateHandler *cb;
1221 void *opaque;
1222 QTAILQ_ENTRY(VMChangeStateEntry) entries;
1223 int priority;
1224 };
1225
1226 static QTAILQ_HEAD(, VMChangeStateEntry) vm_change_state_head;
1227
1228 /**
1229 * qemu_add_vm_change_state_handler_prio:
1230 * @cb: the callback to invoke
1231 * @opaque: user data passed to the callback
1232 * @priority: low priorities execute first when the vm runs and the reverse is
1233 * true when the vm stops
1234 *
1235 * Register a callback function that is invoked when the vm starts or stops
1236 * running.
1237 *
1238 * Returns: an entry to be freed using qemu_del_vm_change_state_handler()
1239 */
1240 VMChangeStateEntry *qemu_add_vm_change_state_handler_prio(
1241 VMChangeStateHandler *cb, void *opaque, int priority)
1242 {
1243 VMChangeStateEntry *e;
1244 VMChangeStateEntry *other;
1245
1246 e = g_malloc0(sizeof(*e));
1247 e->cb = cb;
1248 e->opaque = opaque;
1249 e->priority = priority;
1250
1251 /* Keep list sorted in ascending priority order */
1252 QTAILQ_FOREACH(other, &vm_change_state_head, entries) {
1253 if (priority < other->priority) {
1254 QTAILQ_INSERT_BEFORE(other, e, entries);
1255 return e;
1256 }
1257 }
1258
1259 QTAILQ_INSERT_TAIL(&vm_change_state_head, e, entries);
1260 return e;
1261 }
1262
1263 VMChangeStateEntry *qemu_add_vm_change_state_handler(VMChangeStateHandler *cb,
1264 void *opaque)
1265 {
1266 return qemu_add_vm_change_state_handler_prio(cb, opaque, 0);
1267 }
1268
1269 void qemu_del_vm_change_state_handler(VMChangeStateEntry *e)
1270 {
1271 QTAILQ_REMOVE(&vm_change_state_head, e, entries);
1272 g_free(e);
1273 }
1274
1275 void vm_state_notify(int running, RunState state)
1276 {
1277 VMChangeStateEntry *e, *next;
1278
1279 trace_vm_state_notify(running, state, RunState_str(state));
1280
1281 if (running) {
1282 QTAILQ_FOREACH_SAFE(e, &vm_change_state_head, entries, next) {
1283 e->cb(e->opaque, running, state);
1284 }
1285 } else {
1286 QTAILQ_FOREACH_REVERSE_SAFE(e, &vm_change_state_head, entries, next) {
1287 e->cb(e->opaque, running, state);
1288 }
1289 }
1290 }
1291
1292 static ShutdownCause reset_requested;
1293 static ShutdownCause shutdown_requested;
1294 static int shutdown_signal;
1295 static pid_t shutdown_pid;
1296 static int powerdown_requested;
1297 static int debug_requested;
1298 static int suspend_requested;
1299 static bool preconfig_exit_requested = true;
1300 static WakeupReason wakeup_reason;
1301 static NotifierList powerdown_notifiers =
1302 NOTIFIER_LIST_INITIALIZER(powerdown_notifiers);
1303 static NotifierList suspend_notifiers =
1304 NOTIFIER_LIST_INITIALIZER(suspend_notifiers);
1305 static NotifierList wakeup_notifiers =
1306 NOTIFIER_LIST_INITIALIZER(wakeup_notifiers);
1307 static NotifierList shutdown_notifiers =
1308 NOTIFIER_LIST_INITIALIZER(shutdown_notifiers);
1309 static uint32_t wakeup_reason_mask = ~(1 << QEMU_WAKEUP_REASON_NONE);
1310
1311 ShutdownCause qemu_shutdown_requested_get(void)
1312 {
1313 return shutdown_requested;
1314 }
1315
1316 ShutdownCause qemu_reset_requested_get(void)
1317 {
1318 return reset_requested;
1319 }
1320
1321 static int qemu_shutdown_requested(void)
1322 {
1323 return qatomic_xchg(&shutdown_requested, SHUTDOWN_CAUSE_NONE);
1324 }
1325
1326 static void qemu_kill_report(void)
1327 {
1328 if (!qtest_driver() && shutdown_signal) {
1329 if (shutdown_pid == 0) {
1330 /* This happens for eg ^C at the terminal, so it's worth
1331 * avoiding printing an odd message in that case.
1332 */
1333 error_report("terminating on signal %d", shutdown_signal);
1334 } else {
1335 char *shutdown_cmd = qemu_get_pid_name(shutdown_pid);
1336
1337 error_report("terminating on signal %d from pid " FMT_pid " (%s)",
1338 shutdown_signal, shutdown_pid,
1339 shutdown_cmd ? shutdown_cmd : "<unknown process>");
1340 g_free(shutdown_cmd);
1341 }
1342 shutdown_signal = 0;
1343 }
1344 }
1345
1346 static ShutdownCause qemu_reset_requested(void)
1347 {
1348 ShutdownCause r = reset_requested;
1349
1350 if (r && replay_checkpoint(CHECKPOINT_RESET_REQUESTED)) {
1351 reset_requested = SHUTDOWN_CAUSE_NONE;
1352 return r;
1353 }
1354 return SHUTDOWN_CAUSE_NONE;
1355 }
1356
1357 static int qemu_suspend_requested(void)
1358 {
1359 int r = suspend_requested;
1360 if (r && replay_checkpoint(CHECKPOINT_SUSPEND_REQUESTED)) {
1361 suspend_requested = 0;
1362 return r;
1363 }
1364 return false;
1365 }
1366
1367 static WakeupReason qemu_wakeup_requested(void)
1368 {
1369 return wakeup_reason;
1370 }
1371
1372 static int qemu_powerdown_requested(void)
1373 {
1374 int r = powerdown_requested;
1375 powerdown_requested = 0;
1376 return r;
1377 }
1378
1379 static int qemu_debug_requested(void)
1380 {
1381 int r = debug_requested;
1382 debug_requested = 0;
1383 return r;
1384 }
1385
1386 void qemu_exit_preconfig_request(void)
1387 {
1388 preconfig_exit_requested = true;
1389 }
1390
1391 /*
1392 * Reset the VM. Issue an event unless @reason is SHUTDOWN_CAUSE_NONE.
1393 */
1394 void qemu_system_reset(ShutdownCause reason)
1395 {
1396 MachineClass *mc;
1397
1398 mc = current_machine ? MACHINE_GET_CLASS(current_machine) : NULL;
1399
1400 cpu_synchronize_all_states();
1401
1402 if (mc && mc->reset) {
1403 mc->reset(current_machine);
1404 } else {
1405 qemu_devices_reset();
1406 }
1407 if (reason && reason != SHUTDOWN_CAUSE_SUBSYSTEM_RESET) {
1408 qapi_event_send_reset(shutdown_caused_by_guest(reason), reason);
1409 }
1410 cpu_synchronize_all_post_reset();
1411 }
1412
1413 /*
1414 * Wake the VM after suspend.
1415 */
1416 static void qemu_system_wakeup(void)
1417 {
1418 MachineClass *mc;
1419
1420 mc = current_machine ? MACHINE_GET_CLASS(current_machine) : NULL;
1421
1422 if (mc && mc->wakeup) {
1423 mc->wakeup(current_machine);
1424 }
1425 }
1426
1427 void qemu_system_guest_panicked(GuestPanicInformation *info)
1428 {
1429 qemu_log_mask(LOG_GUEST_ERROR, "Guest crashed");
1430
1431 if (current_cpu) {
1432 current_cpu->crash_occurred = true;
1433 }
1434 qapi_event_send_guest_panicked(GUEST_PANIC_ACTION_PAUSE,
1435 !!info, info);
1436 vm_stop(RUN_STATE_GUEST_PANICKED);
1437 if (!no_shutdown) {
1438 qapi_event_send_guest_panicked(GUEST_PANIC_ACTION_POWEROFF,
1439 !!info, info);
1440 qemu_system_shutdown_request(SHUTDOWN_CAUSE_GUEST_PANIC);
1441 }
1442
1443 if (info) {
1444 if (info->type == GUEST_PANIC_INFORMATION_TYPE_HYPER_V) {
1445 qemu_log_mask(LOG_GUEST_ERROR, "\nHV crash parameters: (%#"PRIx64
1446 " %#"PRIx64" %#"PRIx64" %#"PRIx64" %#"PRIx64")\n",
1447 info->u.hyper_v.arg1,
1448 info->u.hyper_v.arg2,
1449 info->u.hyper_v.arg3,
1450 info->u.hyper_v.arg4,
1451 info->u.hyper_v.arg5);
1452 } else if (info->type == GUEST_PANIC_INFORMATION_TYPE_S390) {
1453 qemu_log_mask(LOG_GUEST_ERROR, " on cpu %d: %s\n"
1454 "PSW: 0x%016" PRIx64 " 0x%016" PRIx64"\n",
1455 info->u.s390.core,
1456 S390CrashReason_str(info->u.s390.reason),
1457 info->u.s390.psw_mask,
1458 info->u.s390.psw_addr);
1459 }
1460 qapi_free_GuestPanicInformation(info);
1461 }
1462 }
1463
1464 void qemu_system_guest_crashloaded(GuestPanicInformation *info)
1465 {
1466 qemu_log_mask(LOG_GUEST_ERROR, "Guest crash loaded");
1467
1468 qapi_event_send_guest_crashloaded(GUEST_PANIC_ACTION_RUN,
1469 !!info, info);
1470
1471 if (info) {
1472 qapi_free_GuestPanicInformation(info);
1473 }
1474 }
1475
1476 void qemu_system_reset_request(ShutdownCause reason)
1477 {
1478 if (no_reboot && reason != SHUTDOWN_CAUSE_SUBSYSTEM_RESET) {
1479 shutdown_requested = reason;
1480 } else {
1481 reset_requested = reason;
1482 }
1483 cpu_stop_current();
1484 qemu_notify_event();
1485 }
1486
1487 static void qemu_system_suspend(void)
1488 {
1489 pause_all_vcpus();
1490 notifier_list_notify(&suspend_notifiers, NULL);
1491 runstate_set(RUN_STATE_SUSPENDED);
1492 qapi_event_send_suspend();
1493 }
1494
1495 void qemu_system_suspend_request(void)
1496 {
1497 if (runstate_check(RUN_STATE_SUSPENDED)) {
1498 return;
1499 }
1500 suspend_requested = 1;
1501 cpu_stop_current();
1502 qemu_notify_event();
1503 }
1504
1505 void qemu_register_suspend_notifier(Notifier *notifier)
1506 {
1507 notifier_list_add(&suspend_notifiers, notifier);
1508 }
1509
1510 void qemu_system_wakeup_request(WakeupReason reason, Error **errp)
1511 {
1512 trace_system_wakeup_request(reason);
1513
1514 if (!runstate_check(RUN_STATE_SUSPENDED)) {
1515 error_setg(errp,
1516 "Unable to wake up: guest is not in suspended state");
1517 return;
1518 }
1519 if (!(wakeup_reason_mask & (1 << reason))) {
1520 return;
1521 }
1522 runstate_set(RUN_STATE_RUNNING);
1523 wakeup_reason = reason;
1524 qemu_notify_event();
1525 }
1526
1527 void qemu_system_wakeup_enable(WakeupReason reason, bool enabled)
1528 {
1529 if (enabled) {
1530 wakeup_reason_mask |= (1 << reason);
1531 } else {
1532 wakeup_reason_mask &= ~(1 << reason);
1533 }
1534 }
1535
1536 void qemu_register_wakeup_notifier(Notifier *notifier)
1537 {
1538 notifier_list_add(&wakeup_notifiers, notifier);
1539 }
1540
1541 void qemu_register_wakeup_support(void)
1542 {
1543 wakeup_suspend_enabled = true;
1544 }
1545
1546 bool qemu_wakeup_suspend_enabled(void)
1547 {
1548 return wakeup_suspend_enabled;
1549 }
1550
1551 void qemu_system_killed(int signal, pid_t pid)
1552 {
1553 shutdown_signal = signal;
1554 shutdown_pid = pid;
1555 no_shutdown = 0;
1556
1557 /* Cannot call qemu_system_shutdown_request directly because
1558 * we are in a signal handler.
1559 */
1560 shutdown_requested = SHUTDOWN_CAUSE_HOST_SIGNAL;
1561 qemu_notify_event();
1562 }
1563
1564 void qemu_system_shutdown_request(ShutdownCause reason)
1565 {
1566 trace_qemu_system_shutdown_request(reason);
1567 replay_shutdown_request(reason);
1568 shutdown_requested = reason;
1569 qemu_notify_event();
1570 }
1571
1572 static void qemu_system_powerdown(void)
1573 {
1574 qapi_event_send_powerdown();
1575 notifier_list_notify(&powerdown_notifiers, NULL);
1576 }
1577
1578 static void qemu_system_shutdown(ShutdownCause cause)
1579 {
1580 qapi_event_send_shutdown(shutdown_caused_by_guest(cause), cause);
1581 notifier_list_notify(&shutdown_notifiers, &cause);
1582 }
1583
1584 void qemu_system_powerdown_request(void)
1585 {
1586 trace_qemu_system_powerdown_request();
1587 powerdown_requested = 1;
1588 qemu_notify_event();
1589 }
1590
1591 void qemu_register_powerdown_notifier(Notifier *notifier)
1592 {
1593 notifier_list_add(&powerdown_notifiers, notifier);
1594 }
1595
1596 void qemu_register_shutdown_notifier(Notifier *notifier)
1597 {
1598 notifier_list_add(&shutdown_notifiers, notifier);
1599 }
1600
1601 void qemu_system_debug_request(void)
1602 {
1603 debug_requested = 1;
1604 qemu_notify_event();
1605 }
1606
1607 static bool main_loop_should_exit(void)
1608 {
1609 RunState r;
1610 ShutdownCause request;
1611
1612 if (preconfig_exit_requested) {
1613 if (runstate_check(RUN_STATE_PRECONFIG)) {
1614 runstate_set(RUN_STATE_PRELAUNCH);
1615 }
1616 preconfig_exit_requested = false;
1617 return true;
1618 }
1619 if (qemu_debug_requested()) {
1620 vm_stop(RUN_STATE_DEBUG);
1621 }
1622 if (qemu_suspend_requested()) {
1623 qemu_system_suspend();
1624 }
1625 request = qemu_shutdown_requested();
1626 if (request) {
1627 qemu_kill_report();
1628 qemu_system_shutdown(request);
1629 if (no_shutdown) {
1630 vm_stop(RUN_STATE_SHUTDOWN);
1631 } else {
1632 return true;
1633 }
1634 }
1635 request = qemu_reset_requested();
1636 if (request) {
1637 pause_all_vcpus();
1638 qemu_system_reset(request);
1639 resume_all_vcpus();
1640 /*
1641 * runstate can change in pause_all_vcpus()
1642 * as iothread mutex is unlocked
1643 */
1644 if (!runstate_check(RUN_STATE_RUNNING) &&
1645 !runstate_check(RUN_STATE_INMIGRATE) &&
1646 !runstate_check(RUN_STATE_FINISH_MIGRATE)) {
1647 runstate_set(RUN_STATE_PRELAUNCH);
1648 }
1649 }
1650 if (qemu_wakeup_requested()) {
1651 pause_all_vcpus();
1652 qemu_system_wakeup();
1653 notifier_list_notify(&wakeup_notifiers, &wakeup_reason);
1654 wakeup_reason = QEMU_WAKEUP_REASON_NONE;
1655 resume_all_vcpus();
1656 qapi_event_send_wakeup();
1657 }
1658 if (qemu_powerdown_requested()) {
1659 qemu_system_powerdown();
1660 }
1661 if (qemu_vmstop_requested(&r)) {
1662 vm_stop(r);
1663 }
1664 return false;
1665 }
1666
1667 void qemu_main_loop(void)
1668 {
1669 #ifdef CONFIG_PROFILER
1670 int64_t ti;
1671 #endif
1672 while (!main_loop_should_exit()) {
1673 #ifdef CONFIG_PROFILER
1674 ti = profile_getclock();
1675 #endif
1676 main_loop_wait(false);
1677 #ifdef CONFIG_PROFILER
1678 dev_time += profile_getclock() - ti;
1679 #endif
1680 }
1681 }
1682
1683 static void version(void)
1684 {
1685 printf("QEMU emulator version " QEMU_FULL_VERSION "\n"
1686 QEMU_COPYRIGHT "\n");
1687 }
1688
1689 static void help(int exitcode)
1690 {
1691 version();
1692 printf("usage: %s [options] [disk_image]\n\n"
1693 "'disk_image' is a raw hard disk image for IDE hard disk 0\n\n",
1694 error_get_progname());
1695
1696 #define QEMU_OPTIONS_GENERATE_HELP
1697 #include "qemu-options-wrapper.h"
1698
1699 printf("\nDuring emulation, the following keys are useful:\n"
1700 "ctrl-alt-f toggle full screen\n"
1701 "ctrl-alt-n switch to virtual console 'n'\n"
1702 "ctrl-alt toggle mouse and keyboard grab\n"
1703 "\n"
1704 "When using -nographic, press 'ctrl-a h' to get some help.\n"
1705 "\n"
1706 QEMU_HELP_BOTTOM "\n");
1707
1708 exit(exitcode);
1709 }
1710
1711 #define HAS_ARG 0x0001
1712
1713 typedef struct QEMUOption {
1714 const char *name;
1715 int flags;
1716 int index;
1717 uint32_t arch_mask;
1718 } QEMUOption;
1719
1720 static const QEMUOption qemu_options[] = {
1721 { "h", 0, QEMU_OPTION_h, QEMU_ARCH_ALL },
1722 #define QEMU_OPTIONS_GENERATE_OPTIONS
1723 #include "qemu-options-wrapper.h"
1724 { NULL },
1725 };
1726
1727 typedef struct VGAInterfaceInfo {
1728 const char *opt_name; /* option name */
1729 const char *name; /* human-readable name */
1730 /* Class names indicating that support is available.
1731 * If no class is specified, the interface is always available */
1732 const char *class_names[2];
1733 } VGAInterfaceInfo;
1734
1735 static const VGAInterfaceInfo vga_interfaces[VGA_TYPE_MAX] = {
1736 [VGA_NONE] = {
1737 .opt_name = "none",
1738 .name = "no graphic card",
1739 },
1740 [VGA_STD] = {
1741 .opt_name = "std",
1742 .name = "standard VGA",
1743 .class_names = { "VGA", "isa-vga" },
1744 },
1745 [VGA_CIRRUS] = {
1746 .opt_name = "cirrus",
1747 .name = "Cirrus VGA",
1748 .class_names = { "cirrus-vga", "isa-cirrus-vga" },
1749 },
1750 [VGA_VMWARE] = {
1751 .opt_name = "vmware",
1752 .name = "VMWare SVGA",
1753 .class_names = { "vmware-svga" },
1754 },
1755 [VGA_VIRTIO] = {
1756 .opt_name = "virtio",
1757 .name = "Virtio VGA",
1758 .class_names = { "virtio-vga" },
1759 },
1760 [VGA_QXL] = {
1761 .opt_name = "qxl",
1762 .name = "QXL VGA",
1763 .class_names = { "qxl-vga" },
1764 },
1765 [VGA_TCX] = {
1766 .opt_name = "tcx",
1767 .name = "TCX framebuffer",
1768 .class_names = { "SUNW,tcx" },
1769 },
1770 [VGA_CG3] = {
1771 .opt_name = "cg3",
1772 .name = "CG3 framebuffer",
1773 .class_names = { "cgthree" },
1774 },
1775 [VGA_XENFB] = {
1776 .opt_name = "xenfb",
1777 .name = "Xen paravirtualized framebuffer",
1778 },
1779 };
1780
1781 static bool vga_interface_available(VGAInterfaceType t)
1782 {
1783 const VGAInterfaceInfo *ti = &vga_interfaces[t];
1784
1785 assert(t < VGA_TYPE_MAX);
1786 return !ti->class_names[0] ||
1787 module_object_class_by_name(ti->class_names[0]) ||
1788 module_object_class_by_name(ti->class_names[1]);
1789 }
1790
1791 static const char *
1792 get_default_vga_model(const MachineClass *machine_class)
1793 {
1794 if (machine_class->default_display) {
1795 return machine_class->default_display;
1796 } else if (vga_interface_available(VGA_CIRRUS)) {
1797 return "cirrus";
1798 } else if (vga_interface_available(VGA_STD)) {
1799 return "std";
1800 }
1801
1802 return NULL;
1803 }
1804
1805 static void select_vgahw(const MachineClass *machine_class, const char *p)
1806 {
1807 const char *opts;
1808 int t;
1809
1810 if (g_str_equal(p, "help")) {
1811 const char *def = get_default_vga_model(machine_class);
1812
1813 for (t = 0; t < VGA_TYPE_MAX; t++) {
1814 const VGAInterfaceInfo *ti = &vga_interfaces[t];
1815
1816 if (vga_interface_available(t) && ti->opt_name) {
1817 printf("%-20s %s%s\n", ti->opt_name, ti->name ?: "",
1818 g_str_equal(ti->opt_name, def) ? " (default)" : "");
1819 }
1820 }
1821 exit(0);
1822 }
1823
1824 assert(vga_interface_type == VGA_NONE);
1825 for (t = 0; t < VGA_TYPE_MAX; t++) {
1826 const VGAInterfaceInfo *ti = &vga_interfaces[t];
1827 if (ti->opt_name && strstart(p, ti->opt_name, &opts)) {
1828 if (!vga_interface_available(t)) {
1829 error_report("%s not available", ti->name);
1830 exit(1);
1831 }
1832 vga_interface_type = t;
1833 break;
1834 }
1835 }
1836 if (t == VGA_TYPE_MAX) {
1837 invalid_vga:
1838 error_report("unknown vga type: %s", p);
1839 exit(1);
1840 }
1841 while (*opts) {
1842 const char *nextopt;
1843
1844 if (strstart(opts, ",retrace=", &nextopt)) {
1845 opts = nextopt;
1846 if (strstart(opts, "dumb", &nextopt))
1847 vga_retrace_method = VGA_RETRACE_DUMB;
1848 else if (strstart(opts, "precise", &nextopt))
1849 vga_retrace_method = VGA_RETRACE_PRECISE;
1850 else goto invalid_vga;
1851 } else goto invalid_vga;
1852 opts = nextopt;
1853 }
1854 }
1855
1856 static void parse_display_qapi(const char *optarg)
1857 {
1858 DisplayOptions *opts;
1859 Visitor *v;
1860
1861 v = qobject_input_visitor_new_str(optarg, "type", &error_fatal);
1862
1863 visit_type_DisplayOptions(v, NULL, &opts, &error_fatal);
1864 QAPI_CLONE_MEMBERS(DisplayOptions, &dpy, opts);
1865
1866 qapi_free_DisplayOptions(opts);
1867 visit_free(v);
1868 }
1869
1870 DisplayOptions *qmp_query_display_options(Error **errp)
1871 {
1872 return QAPI_CLONE(DisplayOptions, &dpy);
1873 }
1874
1875 static void parse_display(const char *p)
1876 {
1877 const char *opts;
1878
1879 if (is_help_option(p)) {
1880 qemu_display_help();
1881 exit(0);
1882 }
1883
1884 if (strstart(p, "sdl", &opts)) {
1885 /*
1886 * sdl DisplayType needs hand-crafted parser instead of
1887 * parse_display_qapi() due to some options not in
1888 * DisplayOptions, specifically:
1889 * - frame
1890 * Already deprecated.
1891 * - ctrl_grab + alt_grab
1892 * Not clear yet what happens to them long-term. Should
1893 * replaced by something better or deprecated and dropped.
1894 */
1895 dpy.type = DISPLAY_TYPE_SDL;
1896 while (*opts) {
1897 const char *nextopt;
1898
1899 if (strstart(opts, ",alt_grab=", &nextopt)) {
1900 opts = nextopt;
1901 if (strstart(opts, "on", &nextopt)) {
1902 alt_grab = 1;
1903 } else if (strstart(opts, "off", &nextopt)) {
1904 alt_grab = 0;
1905 } else {
1906 goto invalid_sdl_args;
1907 }
1908 } else if (strstart(opts, ",ctrl_grab=", &nextopt)) {
1909 opts = nextopt;
1910 if (strstart(opts, "on", &nextopt)) {
1911 ctrl_grab = 1;
1912 } else if (strstart(opts, "off", &nextopt)) {
1913 ctrl_grab = 0;
1914 } else {
1915 goto invalid_sdl_args;
1916 }
1917 } else if (strstart(opts, ",window_close=", &nextopt)) {
1918 opts = nextopt;
1919 dpy.has_window_close = true;
1920 if (strstart(opts, "on", &nextopt)) {
1921 dpy.window_close = true;
1922 } else if (strstart(opts, "off", &nextopt)) {
1923 dpy.window_close = false;
1924 } else {
1925 goto invalid_sdl_args;
1926 }
1927 } else if (strstart(opts, ",show-cursor=", &nextopt)) {
1928 opts = nextopt;
1929 dpy.has_show_cursor = true;
1930 if (strstart(opts, "on", &nextopt)) {
1931 dpy.show_cursor = true;
1932 } else if (strstart(opts, "off", &nextopt)) {
1933 dpy.show_cursor = false;
1934 } else {
1935 goto invalid_sdl_args;
1936 }
1937 } else if (strstart(opts, ",gl=", &nextopt)) {
1938 opts = nextopt;
1939 dpy.has_gl = true;
1940 if (strstart(opts, "on", &nextopt)) {
1941 dpy.gl = DISPLAYGL_MODE_ON;
1942 } else if (strstart(opts, "core", &nextopt)) {
1943 dpy.gl = DISPLAYGL_MODE_CORE;
1944 } else if (strstart(opts, "es", &nextopt)) {
1945 dpy.gl = DISPLAYGL_MODE_ES;
1946 } else if (strstart(opts, "off", &nextopt)) {
1947 dpy.gl = DISPLAYGL_MODE_OFF;
1948 } else {
1949 goto invalid_sdl_args;
1950 }
1951 } else {
1952 invalid_sdl_args:
1953 error_report("invalid SDL option string");
1954 exit(1);
1955 }
1956 opts = nextopt;
1957 }
1958 } else if (strstart(p, "vnc", &opts)) {
1959 /*
1960 * vnc isn't a (local) DisplayType but a protocol for remote
1961 * display access.
1962 */
1963 if (*opts == '=') {
1964 vnc_parse(opts + 1, &error_fatal);
1965 } else {
1966 error_report("VNC requires a display argument vnc=<display>");
1967 exit(1);
1968 }
1969 } else {
1970 parse_display_qapi(p);
1971 }
1972 }
1973
1974 char *qemu_find_file(int type, const char *name)
1975 {
1976 int i;
1977 const char *subdir;
1978 char *buf;
1979
1980 /* Try the name as a straight path first */
1981 if (access(name, R_OK) == 0) {
1982 trace_load_file(name, name);
1983 return g_strdup(name);
1984 }
1985
1986 switch (type) {
1987 case QEMU_FILE_TYPE_BIOS:
1988 subdir = "";
1989 break;
1990 case QEMU_FILE_TYPE_KEYMAP:
1991 subdir = "keymaps/";
1992 break;
1993 default:
1994 abort();
1995 }
1996
1997 for (i = 0; i < data_dir_idx; i++) {
1998 buf = g_strdup_printf("%s/%s%s", data_dir[i], subdir, name);
1999 if (access(buf, R_OK) == 0) {
2000 trace_load_file(name, buf);
2001 return buf;
2002 }
2003 g_free(buf);
2004 }
2005 return NULL;
2006 }
2007
2008 void qemu_add_data_dir(const char *path)
2009 {
2010 int i;
2011
2012 if (path == NULL) {
2013 return;
2014 }
2015 if (data_dir_idx == ARRAY_SIZE(data_dir)) {
2016 return;
2017 }
2018 for (i = 0; i < data_dir_idx; i++) {
2019 if (strcmp(data_dir[i], path) == 0) {
2020 return; /* duplicate */
2021 }
2022 }
2023 data_dir[data_dir_idx++] = g_strdup(path);
2024 }
2025
2026 static inline bool nonempty_str(const char *str)
2027 {
2028 return str && *str;
2029 }
2030
2031 static int parse_fw_cfg(void *opaque, QemuOpts *opts, Error **errp)
2032 {
2033 gchar *buf;
2034 size_t size;
2035 const char *name, *file, *str, *gen_id;
2036 FWCfgState *fw_cfg = (FWCfgState *) opaque;
2037
2038 if (fw_cfg == NULL) {
2039 error_setg(errp, "fw_cfg device not available");
2040 return -1;
2041 }
2042 name = qemu_opt_get(opts, "name");
2043 file = qemu_opt_get(opts, "file");
2044 str = qemu_opt_get(opts, "string");
2045 gen_id = qemu_opt_get(opts, "gen_id");
2046
2047 /* we need the name, and exactly one of: file, content string, gen_id */
2048 if (!nonempty_str(name) ||
2049 nonempty_str(file) + nonempty_str(str) + nonempty_str(gen_id) != 1) {
2050 error_setg(errp, "name, plus exactly one of file,"
2051 " string and gen_id, are needed");
2052 return -1;
2053 }
2054 if (strlen(name) > FW_CFG_MAX_FILE_PATH - 1) {
2055 error_setg(errp, "name too long (max. %d char)",
2056 FW_CFG_MAX_FILE_PATH - 1);
2057 return -1;
2058 }
2059 if (nonempty_str(gen_id)) {
2060 /*
2061 * In this particular case where the content is populated
2062 * internally, the "etc/" namespace protection is relaxed,
2063 * so do not emit a warning.
2064 */
2065 } else if (strncmp(name, "opt/", 4) != 0) {
2066 warn_report("externally provided fw_cfg item names "
2067 "should be prefixed with \"opt/\"");
2068 }
2069 if (nonempty_str(str)) {
2070 size = strlen(str); /* NUL terminator NOT included in fw_cfg blob */
2071 buf = g_memdup(str, size);
2072 } else if (nonempty_str(gen_id)) {
2073 if (!fw_cfg_add_from_generator(fw_cfg, name, gen_id, errp)) {
2074 return -1;
2075 }
2076 return 0;
2077 } else {
2078 GError *err = NULL;
2079 if (!g_file_get_contents(file, &buf, &size, &err)) {
2080 error_setg(errp, "can't load %s: %s", file, err->message);
2081 g_error_free(err);
2082 return -1;
2083 }
2084 }
2085 /* For legacy, keep user files in a specific global order. */
2086 fw_cfg_set_order_override(fw_cfg, FW_CFG_ORDER_OVERRIDE_USER);
2087 fw_cfg_add_file(fw_cfg, name, buf, size);
2088 fw_cfg_reset_order_override(fw_cfg);
2089 return 0;
2090 }
2091
2092 static int device_help_func(void *opaque, QemuOpts *opts, Error **errp)
2093 {
2094 return qdev_device_help(opts);
2095 }
2096
2097 static int device_init_func(void *opaque, QemuOpts *opts, Error **errp)
2098 {
2099 DeviceState *dev;
2100
2101 dev = qdev_device_add(opts, errp);
2102 if (!dev && *errp) {
2103 error_report_err(*errp);
2104 return -1;
2105 } else if (dev) {
2106 object_unref(OBJECT(dev));
2107 }
2108 return 0;
2109 }
2110
2111 static int chardev_init_func(void *opaque, QemuOpts *opts, Error **errp)
2112 {
2113 Error *local_err = NULL;
2114
2115 if (!qemu_chr_new_from_opts(opts, NULL, &local_err)) {
2116 if (local_err) {
2117 error_propagate(errp, local_err);
2118 return -1;
2119 }
2120 exit(0);
2121 }
2122 return 0;
2123 }
2124
2125 #ifdef CONFIG_VIRTFS
2126 static int fsdev_init_func(void *opaque, QemuOpts *opts, Error **errp)
2127 {
2128 return qemu_fsdev_add(opts, errp);
2129 }
2130 #endif
2131
2132 static int mon_init_func(void *opaque, QemuOpts *opts, Error **errp)
2133 {
2134 return monitor_init_opts(opts, errp);
2135 }
2136
2137 static void monitor_parse(const char *optarg, const char *mode, bool pretty)
2138 {
2139 static int monitor_device_index = 0;
2140 QemuOpts *opts;
2141 const char *p;
2142 char label[32];
2143
2144 if (strstart(optarg, "chardev:", &p)) {
2145 snprintf(label, sizeof(label), "%s", p);
2146 } else {
2147 snprintf(label, sizeof(label), "compat_monitor%d",
2148 monitor_device_index);
2149 opts = qemu_chr_parse_compat(label, optarg, true);
2150 if (!opts) {
2151 error_report("parse error: %s", optarg);
2152 exit(1);
2153 }
2154 }
2155
2156 opts = qemu_opts_create(qemu_find_opts("mon"), label, 1, &error_fatal);
2157 qemu_opt_set(opts, "mode", mode, &error_abort);
2158 qemu_opt_set(opts, "chardev", label, &error_abort);
2159 if (!strcmp(mode, "control")) {
2160 qemu_opt_set_bool(opts, "pretty", pretty, &error_abort);
2161 } else {
2162 assert(pretty == false);
2163 }
2164 monitor_device_index++;
2165 }
2166
2167 struct device_config {
2168 enum {
2169 DEV_USB, /* -usbdevice */
2170 DEV_SERIAL, /* -serial */
2171 DEV_PARALLEL, /* -parallel */
2172 DEV_DEBUGCON, /* -debugcon */
2173 DEV_GDB, /* -gdb, -s */
2174 DEV_SCLP, /* s390 sclp */
2175 } type;
2176 const char *cmdline;
2177 Location loc;
2178 QTAILQ_ENTRY(device_config) next;
2179 };
2180
2181 static QTAILQ_HEAD(, device_config) device_configs =
2182 QTAILQ_HEAD_INITIALIZER(device_configs);
2183
2184 static void add_device_config(int type, const char *cmdline)
2185 {
2186 struct device_config *conf;
2187
2188 conf = g_malloc0(sizeof(*conf));
2189 conf->type = type;
2190 conf->cmdline = cmdline;
2191 loc_save(&conf->loc);
2192 QTAILQ_INSERT_TAIL(&device_configs, conf, next);
2193 }
2194
2195 static int foreach_device_config(int type, int (*func)(const char *cmdline))
2196 {
2197 struct device_config *conf;
2198 int rc;
2199
2200 QTAILQ_FOREACH(conf, &device_configs, next) {
2201 if (conf->type != type)
2202 continue;
2203 loc_push_restore(&conf->loc);
2204 rc = func(conf->cmdline);
2205 loc_pop(&conf->loc);
2206 if (rc) {
2207 return rc;
2208 }
2209 }
2210 return 0;
2211 }
2212
2213 static int serial_parse(const char *devname)
2214 {
2215 int index = num_serial_hds;
2216 char label[32];
2217
2218 if (strcmp(devname, "none") == 0)
2219 return 0;
2220 snprintf(label, sizeof(label), "serial%d", index);
2221 serial_hds = g_renew(Chardev *, serial_hds, index + 1);
2222
2223 serial_hds[index] = qemu_chr_new_mux_mon(label, devname, NULL);
2224 if (!serial_hds[index]) {
2225 error_report("could not connect serial device"
2226 " to character backend '%s'", devname);
2227 return -1;
2228 }
2229 num_serial_hds++;
2230 return 0;
2231 }
2232
2233 Chardev *serial_hd(int i)
2234 {
2235 assert(i >= 0);
2236 if (i < num_serial_hds) {
2237 return serial_hds[i];
2238 }
2239 return NULL;
2240 }
2241
2242 int serial_max_hds(void)
2243 {
2244 return num_serial_hds;
2245 }
2246
2247 static int parallel_parse(const char *devname)
2248 {
2249 static int index = 0;
2250 char label[32];
2251
2252 if (strcmp(devname, "none") == 0)
2253 return 0;
2254 if (index == MAX_PARALLEL_PORTS) {
2255 error_report("too many parallel ports");
2256 exit(1);
2257 }
2258 snprintf(label, sizeof(label), "parallel%d", index);
2259 parallel_hds[index] = qemu_chr_new_mux_mon(label, devname, NULL);
2260 if (!parallel_hds[index]) {
2261 error_report("could not connect parallel device"
2262 " to character backend '%s'", devname);
2263 return -1;
2264 }
2265 index++;
2266 return 0;
2267 }
2268
2269 static int debugcon_parse(const char *devname)
2270 {
2271 QemuOpts *opts;
2272
2273 if (!qemu_chr_new_mux_mon("debugcon", devname, NULL)) {
2274 error_report("invalid character backend '%s'", devname);
2275 exit(1);
2276 }
2277 opts = qemu_opts_create(qemu_find_opts("device"), "debugcon", 1, NULL);
2278 if (!opts) {
2279 error_report("already have a debugcon device");
2280 exit(1);
2281 }
2282 qemu_opt_set(opts, "driver", "isa-debugcon", &error_abort);
2283 qemu_opt_set(opts, "chardev", "debugcon", &error_abort);
2284 return 0;
2285 }
2286
2287 static gint machine_class_cmp(gconstpointer a, gconstpointer b)
2288 {
2289 const MachineClass *mc1 = a, *mc2 = b;
2290 int res;
2291
2292 if (mc1->family == NULL) {
2293 if (mc2->family == NULL) {
2294 /* Compare standalone machine types against each other; they sort
2295 * in increasing order.
2296 */
2297 return strcmp(object_class_get_name(OBJECT_CLASS(mc1)),
2298 object_class_get_name(OBJECT_CLASS(mc2)));
2299 }
2300
2301 /* Standalone machine types sort after families. */
2302 return 1;
2303 }
2304
2305 if (mc2->family == NULL) {
2306 /* Families sort before standalone machine types. */
2307 return -1;
2308 }
2309
2310 /* Families sort between each other alphabetically increasingly. */
2311 res = strcmp(mc1->family, mc2->family);
2312 if (res != 0) {
2313 return res;
2314 }
2315
2316 /* Within the same family, machine types sort in decreasing order. */
2317 return strcmp(object_class_get_name(OBJECT_CLASS(mc2)),
2318 object_class_get_name(OBJECT_CLASS(mc1)));
2319 }
2320
2321 static MachineClass *machine_parse(const char *name, GSList *machines)
2322 {
2323 MachineClass *mc;
2324 GSList *el;
2325
2326 if (is_help_option(name)) {
2327 printf("Supported machines are:\n");
2328 machines = g_slist_sort(machines, machine_class_cmp);
2329 for (el = machines; el; el = el->next) {
2330 MachineClass *mc = el->data;
2331 if (mc->alias) {
2332 printf("%-20s %s (alias of %s)\n", mc->alias, mc->desc, mc->name);
2333 }
2334 printf("%-20s %s%s%s\n", mc->name, mc->desc,
2335 mc->is_default ? " (default)" : "",
2336 mc->deprecation_reason ? " (deprecated)" : "");
2337 }
2338 exit(0);
2339 }
2340
2341 mc = find_machine(name, machines);
2342 if (!mc) {
2343 error_report("unsupported machine type");
2344 error_printf("Use -machine help to list supported machines\n");
2345 exit(1);
2346 }
2347 return mc;
2348 }
2349
2350 void qemu_add_exit_notifier(Notifier *notify)
2351 {
2352 notifier_list_add(&exit_notifiers, notify);
2353 }
2354
2355 void qemu_remove_exit_notifier(Notifier *notify)
2356 {
2357 notifier_remove(notify);
2358 }
2359
2360 static void qemu_run_exit_notifiers(void)
2361 {
2362 notifier_list_notify(&exit_notifiers, NULL);
2363 }
2364
2365 static const char *pid_file;
2366 static Notifier qemu_unlink_pidfile_notifier;
2367
2368 static void qemu_unlink_pidfile(Notifier *n, void *data)
2369 {
2370 if (pid_file) {
2371 unlink(pid_file);
2372 }
2373 }
2374
2375 bool machine_init_done;
2376
2377 void qemu_add_machine_init_done_notifier(Notifier *notify)
2378 {
2379 notifier_list_add(&machine_init_done_notifiers, notify);
2380 if (machine_init_done) {
2381 notify->notify(notify, NULL);
2382 }
2383 }
2384
2385 void qemu_remove_machine_init_done_notifier(Notifier *notify)
2386 {
2387 notifier_remove(notify);
2388 }
2389
2390 static void qemu_run_machine_init_done_notifiers(void)
2391 {
2392 machine_init_done = true;
2393 notifier_list_notify(&machine_init_done_notifiers, NULL);
2394 }
2395
2396 static const QEMUOption *lookup_opt(int argc, char **argv,
2397 const char **poptarg, int *poptind)
2398 {
2399 const QEMUOption *popt;
2400 int optind = *poptind;
2401 char *r = argv[optind];
2402 const char *optarg;
2403
2404 loc_set_cmdline(argv, optind, 1);
2405 optind++;
2406 /* Treat --foo the same as -foo. */
2407 if (r[1] == '-')
2408 r++;
2409 popt = qemu_options;
2410 for(;;) {
2411 if (!popt->name) {
2412 error_report("invalid option");
2413 exit(1);
2414 }
2415 if (!strcmp(popt->name, r + 1))
2416 break;
2417 popt++;
2418 }
2419 if (popt->flags & HAS_ARG) {
2420 if (optind >= argc) {
2421 error_report("requires an argument");
2422 exit(1);
2423 }
2424 optarg = argv[optind++];
2425 loc_set_cmdline(argv, optind - 2, 2);
2426 } else {
2427 optarg = NULL;
2428 }
2429
2430 *poptarg = optarg;
2431 *poptind = optind;
2432
2433 return popt;
2434 }
2435
2436 static MachineClass *select_machine(void)
2437 {
2438 GSList *machines = object_class_get_list(TYPE_MACHINE, false);
2439 MachineClass *machine_class = find_default_machine(machines);
2440 const char *optarg;
2441 QemuOpts *opts;
2442 Location loc;
2443
2444 loc_push_none(&loc);
2445
2446 opts = qemu_get_machine_opts();
2447 qemu_opts_loc_restore(opts);
2448
2449 optarg = qemu_opt_get(opts, "type");
2450 if (optarg) {
2451 machine_class = machine_parse(optarg, machines);
2452 }
2453
2454 if (!machine_class) {
2455 error_report("No machine specified, and there is no default");
2456 error_printf("Use -machine help to list supported machines\n");
2457 exit(1);
2458 }
2459
2460 loc_pop(&loc);
2461 g_slist_free(machines);
2462 return machine_class;
2463 }
2464
2465 static int object_parse_property_opt(Object *obj,
2466 const char *name, const char *value,
2467 const char *skip, Error **errp)
2468 {
2469 if (g_str_equal(name, skip)) {
2470 return 0;
2471 }
2472
2473 if (!object_property_parse(obj, name, value, errp)) {
2474 return -1;
2475 }
2476
2477 return 0;
2478 }
2479
2480 static int machine_set_property(void *opaque,
2481 const char *name, const char *value,
2482 Error **errp)
2483 {
2484 g_autofree char *qom_name = g_strdup(name);
2485 char *p;
2486
2487 for (p = qom_name; *p; p++) {
2488 if (*p == '_') {
2489 *p = '-';
2490 }
2491 }
2492
2493 /* Legacy options do not correspond to MachineState properties. */
2494 if (g_str_equal(qom_name, "accel")) {
2495 return 0;
2496 }
2497 if (g_str_equal(qom_name, "igd-passthru")) {
2498 object_register_sugar_prop(ACCEL_CLASS_NAME("xen"), qom_name, value);
2499 return 0;
2500 }
2501 if (g_str_equal(qom_name, "kvm-shadow-mem") ||
2502 g_str_equal(qom_name, "kernel-irqchip")) {
2503 object_register_sugar_prop(ACCEL_CLASS_NAME("kvm"), qom_name, value);
2504 return 0;
2505 }
2506
2507 return object_parse_property_opt(opaque, name, value, "type", errp);
2508 }
2509
2510 /*
2511 * Initial object creation happens before all other
2512 * QEMU data types are created. The majority of objects
2513 * can be created at this point. The rng-egd object
2514 * cannot be created here, as it depends on the chardev
2515 * already existing.
2516 */
2517 static bool object_create_initial(const char *type, QemuOpts *opts)
2518 {
2519 if (user_creatable_print_help(type, opts)) {
2520 exit(0);
2521 }
2522
2523 /*
2524 * Objects should not be made "delayed" without a reason. If you
2525 * add one, state the reason in a comment!
2526 */
2527
2528 /* Reason: rng-egd property "chardev" */
2529 if (g_str_equal(type, "rng-egd")) {
2530 return false;
2531 }
2532
2533 #if defined(CONFIG_VHOST_USER) && defined(CONFIG_LINUX)
2534 /* Reason: cryptodev-vhost-user property "chardev" */
2535 if (g_str_equal(type, "cryptodev-vhost-user")) {
2536 return false;
2537 }
2538 #endif
2539
2540 /*
2541 * Reason: filter-* property "netdev" etc.
2542 */
2543 if (g_str_equal(type, "filter-buffer") ||
2544 g_str_equal(type, "filter-dump") ||
2545 g_str_equal(type, "filter-mirror") ||
2546 g_str_equal(type, "filter-redirector") ||
2547 g_str_equal(type, "colo-compare") ||
2548 g_str_equal(type, "filter-rewriter") ||
2549 g_str_equal(type, "filter-replay")) {
2550 return false;
2551 }
2552
2553 /* Memory allocation by backends needs to be done
2554 * after configure_accelerator() (due to the tcg_enabled()
2555 * checks at memory_region_init_*()).
2556 *
2557 * Also, allocation of large amounts of memory may delay
2558 * chardev initialization for too long, and trigger timeouts
2559 * on software that waits for a monitor socket to be created
2560 * (e.g. libvirt).
2561 */
2562 if (g_str_has_prefix(type, "memory-backend-")) {
2563 return false;
2564 }
2565
2566 return true;
2567 }
2568
2569
2570 /*
2571 * The remainder of object creation happens after the
2572 * creation of chardev, fsdev, net clients and device data types.
2573 */
2574 static bool object_create_delayed(const char *type, QemuOpts *opts)
2575 {
2576 return !object_create_initial(type, opts);
2577 }
2578
2579
2580 static bool set_memory_options(uint64_t *ram_slots, ram_addr_t *maxram_size,
2581 MachineClass *mc)
2582 {
2583 uint64_t sz;
2584 const char *mem_str;
2585 const ram_addr_t default_ram_size = mc->default_ram_size;
2586 QemuOpts *opts = qemu_find_opts_singleton("memory");
2587 Location loc;
2588
2589 loc_push_none(&loc);
2590 qemu_opts_loc_restore(opts);
2591
2592 sz = 0;
2593 mem_str = qemu_opt_get(opts, "size");
2594 if (mem_str) {
2595 if (!*mem_str) {
2596 error_report("missing 'size' option value");
2597 exit(EXIT_FAILURE);
2598 }
2599
2600 sz = qemu_opt_get_size(opts, "size", ram_size);
2601
2602 /* Fix up legacy suffix-less format */
2603 if (g_ascii_isdigit(mem_str[strlen(mem_str) - 1])) {
2604 uint64_t overflow_check = sz;
2605
2606 sz *= MiB;
2607 if (sz / MiB != overflow_check) {
2608 error_report("too large 'size' option value");
2609 exit(EXIT_FAILURE);
2610 }
2611 }
2612 }
2613
2614 /* backward compatibility behaviour for case "-m 0" */
2615 if (sz == 0) {
2616 sz = default_ram_size;
2617 }
2618
2619 sz = QEMU_ALIGN_UP(sz, 8192);
2620 if (mc->fixup_ram_size) {
2621 sz = mc->fixup_ram_size(sz);
2622 }
2623 ram_size = sz;
2624 if (ram_size != sz) {
2625 error_report("ram size too large");
2626 exit(EXIT_FAILURE);
2627 }
2628
2629 /* store value for the future use */
2630 qemu_opt_set_number(opts, "size", ram_size, &error_abort);
2631 *maxram_size = ram_size;
2632
2633 if (qemu_opt_get(opts, "maxmem")) {
2634 uint64_t slots;
2635
2636 sz = qemu_opt_get_size(opts, "maxmem", 0);
2637 slots = qemu_opt_get_number(opts, "slots", 0);
2638 if (sz < ram_size) {
2639 error_report("invalid value of -m option maxmem: "
2640 "maximum memory size (0x%" PRIx64 ") must be at least "
2641 "the initial memory size (0x" RAM_ADDR_FMT ")",
2642 sz, ram_size);
2643 exit(EXIT_FAILURE);
2644 } else if (slots && sz == ram_size) {
2645 error_report("invalid value of -m option maxmem: "
2646 "memory slots were specified but maximum memory size "
2647 "(0x%" PRIx64 ") is equal to the initial memory size "
2648 "(0x" RAM_ADDR_FMT ")", sz, ram_size);
2649 exit(EXIT_FAILURE);
2650 }
2651
2652 *maxram_size = sz;
2653 *ram_slots = slots;
2654 } else if (qemu_opt_get(opts, "slots")) {
2655 error_report("invalid -m option value: missing 'maxmem' option");
2656 exit(EXIT_FAILURE);
2657 }
2658
2659 loc_pop(&loc);
2660 return !!mem_str;
2661 }
2662
2663 static int global_init_func(void *opaque, QemuOpts *opts, Error **errp)
2664 {
2665 GlobalProperty *g;
2666
2667 g = g_malloc0(sizeof(*g));
2668 g->driver = qemu_opt_get(opts, "driver");
2669 g->property = qemu_opt_get(opts, "property");
2670 g->value = qemu_opt_get(opts, "value");
2671 qdev_prop_register_global(g);
2672 return 0;
2673 }
2674
2675 static int qemu_read_default_config_file(void)
2676 {
2677 int ret;
2678
2679 ret = qemu_read_config_file(CONFIG_QEMU_CONFDIR "/qemu.conf");
2680 if (ret < 0 && ret != -ENOENT) {
2681 return ret;
2682 }
2683
2684 return 0;
2685 }
2686
2687 static void user_register_global_props(void)
2688 {
2689 qemu_opts_foreach(qemu_find_opts("global"),
2690 global_init_func, NULL, NULL);
2691 }
2692
2693 static int do_configure_icount(void *opaque, QemuOpts *opts, Error **errp)
2694 {
2695 configure_icount(opts, errp);
2696 return 0;
2697 }
2698
2699 static int accelerator_set_property(void *opaque,
2700 const char *name, const char *value,
2701 Error **errp)
2702 {
2703 return object_parse_property_opt(opaque, name, value, "accel", errp);
2704 }
2705
2706 static int do_configure_accelerator(void *opaque, QemuOpts *opts, Error **errp)
2707 {
2708 bool *p_init_failed = opaque;
2709 const char *acc = qemu_opt_get(opts, "accel");
2710 AccelClass *ac = accel_find(acc);
2711 AccelState *accel;
2712 int ret;
2713
2714 if (!ac) {
2715 *p_init_failed = true;
2716 error_report("invalid accelerator %s", acc);
2717 return 0;
2718 }
2719 accel = ACCEL(object_new_with_class(OBJECT_CLASS(ac)));
2720 object_apply_compat_props(OBJECT(accel));
2721 qemu_opt_foreach(opts, accelerator_set_property,
2722 accel,
2723 &error_fatal);
2724
2725 ret = accel_init_machine(accel, current_machine);
2726 if (ret < 0) {
2727 *p_init_failed = true;
2728 error_report("failed to initialize %s: %s",
2729 acc, strerror(-ret));
2730 return 0;
2731 }
2732
2733 return 1;
2734 }
2735
2736 static void configure_accelerators(const char *progname)
2737 {
2738 const char *accel;
2739 bool init_failed = false;
2740
2741 qemu_opts_foreach(qemu_find_opts("icount"),
2742 do_configure_icount, NULL, &error_fatal);
2743
2744 accel = qemu_opt_get(qemu_get_machine_opts(), "accel");
2745 if (QTAILQ_EMPTY(&qemu_accel_opts.head)) {
2746 char **accel_list, **tmp;
2747
2748 if (accel == NULL) {
2749 /* Select the default accelerator */
2750 bool have_tcg = accel_find("tcg");
2751 bool have_kvm = accel_find("kvm");
2752
2753 if (have_tcg && have_kvm) {
2754 if (g_str_has_suffix(progname, "kvm")) {
2755 /* If the program name ends with "kvm", we prefer KVM */
2756 accel = "kvm:tcg";
2757 } else {
2758 accel = "tcg:kvm";
2759 }
2760 } else if (have_kvm) {
2761 accel = "kvm";
2762 } else if (have_tcg) {
2763 accel = "tcg";
2764 } else {
2765 error_report("No accelerator selected and"
2766 " no default accelerator available");
2767 exit(1);
2768 }
2769 }
2770 accel_list = g_strsplit(accel, ":", 0);
2771
2772 for (tmp = accel_list; *tmp; tmp++) {
2773 /*
2774 * Filter invalid accelerators here, to prevent obscenities
2775 * such as "-machine accel=tcg,,thread=single".
2776 */
2777 if (accel_find(*tmp)) {
2778 qemu_opts_parse_noisily(qemu_find_opts("accel"), *tmp, true);
2779 } else {
2780 init_failed = true;
2781 error_report("invalid accelerator %s", *tmp);
2782 }
2783 }
2784 g_strfreev(accel_list);
2785 } else {
2786 if (accel != NULL) {
2787 error_report("The -accel and \"-machine accel=\" options are incompatible");
2788 exit(1);
2789 }
2790 }
2791
2792 if (!qemu_opts_foreach(qemu_find_opts("accel"),
2793 do_configure_accelerator, &init_failed, &error_fatal)) {
2794 if (!init_failed) {
2795 error_report("no accelerator found");
2796 }
2797 exit(1);
2798 }
2799
2800 if (init_failed) {
2801 AccelClass *ac = ACCEL_GET_CLASS(current_accel());
2802 error_report("falling back to %s", ac->name);
2803 }
2804
2805 if (use_icount && !(tcg_enabled() || qtest_enabled())) {
2806 error_report("-icount is not allowed with hardware virtualization");
2807 exit(1);
2808 }
2809 }
2810
2811 static void create_default_memdev(MachineState *ms, const char *path)
2812 {
2813 Object *obj;
2814 MachineClass *mc = MACHINE_GET_CLASS(ms);
2815
2816 obj = object_new(path ? TYPE_MEMORY_BACKEND_FILE : TYPE_MEMORY_BACKEND_RAM);
2817 if (path) {
2818 object_property_set_str(obj, "mem-path", path, &error_fatal);
2819 }
2820 object_property_set_int(obj, "size", ms->ram_size, &error_fatal);
2821 object_property_add_child(object_get_objects_root(), mc->default_ram_id,
2822 obj);
2823 /* Ensure backend's memory region name is equal to mc->default_ram_id */
2824 object_property_set_bool(obj, "x-use-canonical-path-for-ramblock-id",
2825 false, &error_fatal);
2826 user_creatable_complete(USER_CREATABLE(obj), &error_fatal);
2827 object_unref(obj);
2828 object_property_set_str(OBJECT(ms), "memory-backend", mc->default_ram_id,
2829 &error_fatal);
2830 }
2831
2832 void qemu_init(int argc, char **argv, char **envp)
2833 {
2834 int i;
2835 int snapshot, linux_boot;
2836 const char *initrd_filename;
2837 const char *kernel_filename, *kernel_cmdline;
2838 const char *boot_order = NULL;
2839 const char *boot_once = NULL;
2840 DisplayState *ds;
2841 QemuOpts *opts, *machine_opts;
2842 QemuOpts *icount_opts = NULL, *accel_opts = NULL;
2843 QemuOptsList *olist;
2844 int optind;
2845 const char *optarg;
2846 const char *loadvm = NULL;
2847 MachineClass *machine_class;
2848 const char *cpu_option;
2849 const char *vga_model = NULL;
2850 const char *qtest_chrdev = NULL;
2851 const char *qtest_log = NULL;
2852 const char *incoming = NULL;
2853 bool userconfig = true;
2854 bool nographic = false;
2855 int display_remote = 0;
2856 const char *log_mask = NULL;
2857 const char *log_file = NULL;
2858 char *trace_file = NULL;
2859 ram_addr_t maxram_size;
2860 uint64_t ram_slots = 0;
2861 FILE *vmstate_dump_file = NULL;
2862 Error *main_loop_err = NULL;
2863 Error *err = NULL;
2864 bool list_data_dirs = false;
2865 char *dir, **dirs;
2866 const char *mem_path = NULL;
2867 bool have_custom_ram_size;
2868 BlockdevOptionsQueue bdo_queue = QSIMPLEQ_HEAD_INITIALIZER(bdo_queue);
2869 QemuPluginList plugin_list = QTAILQ_HEAD_INITIALIZER(plugin_list);
2870 int mem_prealloc = 0; /* force preallocation of physical target memory */
2871
2872 os_set_line_buffering();
2873
2874 error_init(argv[0]);
2875 module_call_init(MODULE_INIT_TRACE);
2876
2877 qemu_init_cpu_list();
2878 qemu_init_cpu_loop();
2879
2880 qemu_mutex_lock_iothread();
2881
2882 atexit(qemu_run_exit_notifiers);
2883 qemu_init_exec_dir(argv[0]);
2884
2885 module_call_init(MODULE_INIT_QOM);
2886 module_call_init(MODULE_INIT_MIGRATION);
2887
2888 qemu_add_opts(&qemu_drive_opts);
2889 qemu_add_drive_opts(&qemu_legacy_drive_opts);
2890 qemu_add_drive_opts(&qemu_common_drive_opts);
2891 qemu_add_drive_opts(&qemu_drive_opts);
2892 qemu_add_drive_opts(&bdrv_runtime_opts);
2893 qemu_add_opts(&qemu_chardev_opts);
2894 qemu_add_opts(&qemu_device_opts);
2895 qemu_add_opts(&qemu_netdev_opts);
2896 qemu_add_opts(&qemu_nic_opts);
2897 qemu_add_opts(&qemu_net_opts);
2898 qemu_add_opts(&qemu_rtc_opts);
2899 qemu_add_opts(&qemu_global_opts);
2900 qemu_add_opts(&qemu_mon_opts);
2901 qemu_add_opts(&qemu_trace_opts);
2902 qemu_plugin_add_opts();
2903 qemu_add_opts(&qemu_option_rom_opts);
2904 qemu_add_opts(&qemu_machine_opts);
2905 qemu_add_opts(&qemu_accel_opts);
2906 qemu_add_opts(&qemu_mem_opts);
2907 qemu_add_opts(&qemu_smp_opts);
2908 qemu_add_opts(&qemu_boot_opts);
2909 qemu_add_opts(&qemu_add_fd_opts);
2910 qemu_add_opts(&qemu_object_opts);
2911 qemu_add_opts(&qemu_tpmdev_opts);
2912 qemu_add_opts(&qemu_realtime_opts);
2913 qemu_add_opts(&qemu_overcommit_opts);
2914 qemu_add_opts(&qemu_msg_opts);
2915 qemu_add_opts(&qemu_name_opts);
2916 qemu_add_opts(&qemu_numa_opts);
2917 qemu_add_opts(&qemu_icount_opts);
2918 qemu_add_opts(&qemu_semihosting_config_opts);
2919 qemu_add_opts(&qemu_fw_cfg_opts);
2920 module_call_init(MODULE_INIT_OPTS);
2921
2922 runstate_init();
2923 precopy_infrastructure_init();
2924 postcopy_infrastructure_init();
2925 monitor_init_globals();
2926
2927 if (qcrypto_init(&err) < 0) {
2928 error_reportf_err(err, "cannot initialize crypto: ");
2929 exit(1);
2930 }
2931
2932 QTAILQ_INIT(&vm_change_state_head);
2933 os_setup_early_signal_handling();
2934
2935 cpu_option = NULL;
2936 snapshot = 0;
2937
2938 nb_nics = 0;
2939
2940 bdrv_init_with_whitelist();
2941
2942 autostart = 1;
2943
2944 /* first pass of option parsing */
2945 optind = 1;
2946 while (optind < argc) {
2947 if (argv[optind][0] != '-') {
2948 /* disk image */
2949 optind++;
2950 } else {
2951 const QEMUOption *popt;
2952
2953 popt = lookup_opt(argc, argv, &optarg, &optind);
2954 switch (popt->index) {
2955 case QEMU_OPTION_nouserconfig:
2956 userconfig = false;
2957 break;
2958 }
2959 }
2960 }
2961
2962 if (userconfig) {
2963 if (qemu_read_default_config_file() < 0) {
2964 exit(1);
2965 }
2966 }
2967
2968 /* second pass of option parsing */
2969 optind = 1;
2970 for(;;) {
2971 if (optind >= argc)
2972 break;
2973 if (argv[optind][0] != '-') {
2974 loc_set_cmdline(argv, optind, 1);
2975 drive_add(IF_DEFAULT, 0, argv[optind++], HD_OPTS);
2976 } else {
2977 const QEMUOption *popt;
2978
2979 popt = lookup_opt(argc, argv, &optarg, &optind);
2980 if (!(popt->arch_mask & arch_type)) {
2981 error_report("Option not supported for this target");
2982 exit(1);
2983 }
2984 switch(popt->index) {
2985 case QEMU_OPTION_cpu:
2986 /* hw initialization will check this */
2987 cpu_option = optarg;
2988 break;
2989 case QEMU_OPTION_hda:
2990 case QEMU_OPTION_hdb:
2991 case QEMU_OPTION_hdc:
2992 case QEMU_OPTION_hdd:
2993 drive_add(IF_DEFAULT, popt->index - QEMU_OPTION_hda, optarg,
2994 HD_OPTS);
2995 break;
2996 case QEMU_OPTION_blockdev:
2997 {
2998 Visitor *v;
2999 BlockdevOptionsQueueEntry *bdo;
3000
3001 v = qobject_input_visitor_new_str(optarg, "driver",
3002 &error_fatal);
3003
3004 bdo = g_new(BlockdevOptionsQueueEntry, 1);
3005 visit_type_BlockdevOptions(v, NULL, &bdo->bdo,
3006 &error_fatal);
3007 visit_free(v);
3008 loc_save(&bdo->loc);
3009 QSIMPLEQ_INSERT_TAIL(&bdo_queue, bdo, entry);
3010 break;
3011 }
3012 case QEMU_OPTION_drive:
3013 if (drive_def(optarg) == NULL) {
3014 exit(1);
3015 }
3016 break;
3017 case QEMU_OPTION_set:
3018 if (qemu_set_option(optarg) != 0)
3019 exit(1);
3020 break;
3021 case QEMU_OPTION_global:
3022 if (qemu_global_option(optarg) != 0)
3023 exit(1);
3024 break;
3025 case QEMU_OPTION_mtdblock:
3026 drive_add(IF_MTD, -1, optarg, MTD_OPTS);
3027 break;
3028 case QEMU_OPTION_sd:
3029 drive_add(IF_SD, -1, optarg, SD_OPTS);
3030 break;
3031 case QEMU_OPTION_pflash:
3032 drive_add(IF_PFLASH, -1, optarg, PFLASH_OPTS);
3033 break;
3034 case QEMU_OPTION_snapshot:
3035 {
3036 Error *blocker = NULL;
3037 snapshot = 1;
3038 error_setg(&blocker, QERR_REPLAY_NOT_SUPPORTED,
3039 "-snapshot");
3040 replay_add_blocker(blocker);
3041 }
3042 break;
3043 case QEMU_OPTION_numa:
3044 opts = qemu_opts_parse_noisily(qemu_find_opts("numa"),
3045 optarg, true);
3046 if (!opts) {
3047 exit(1);
3048 }
3049 break;
3050 case QEMU_OPTION_display:
3051 parse_display(optarg);
3052 break;
3053 case QEMU_OPTION_nographic:
3054 olist = qemu_find_opts("machine");
3055 qemu_opts_parse_noisily(olist, "graphics=off", false);
3056 nographic = true;
3057 dpy.type = DISPLAY_TYPE_NONE;
3058 break;
3059 case QEMU_OPTION_curses:
3060 #ifdef CONFIG_CURSES
3061 dpy.type = DISPLAY_TYPE_CURSES;
3062 #else
3063 error_report("curses or iconv support is disabled");
3064 exit(1);
3065 #endif
3066 break;
3067 case QEMU_OPTION_portrait:
3068 graphic_rotate = 90;
3069 break;
3070 case QEMU_OPTION_rotate:
3071 graphic_rotate = strtol(optarg, (char **) &optarg, 10);
3072 if (graphic_rotate != 0 && graphic_rotate != 90 &&
3073 graphic_rotate != 180 && graphic_rotate != 270) {
3074 error_report("only 90, 180, 270 deg rotation is available");
3075 exit(1);
3076 }
3077 break;
3078 case QEMU_OPTION_kernel:
3079 qemu_opts_set(qemu_find_opts("machine"), NULL, "kernel", optarg,
3080 &error_abort);
3081 break;
3082 case QEMU_OPTION_initrd:
3083 qemu_opts_set(qemu_find_opts("machine"), NULL, "initrd", optarg,
3084 &error_abort);
3085 break;
3086 case QEMU_OPTION_append:
3087 qemu_opts_set(qemu_find_opts("machine"), NULL, "append", optarg,
3088 &error_abort);
3089 break;
3090 case QEMU_OPTION_dtb:
3091 qemu_opts_set(qemu_find_opts("machine"), NULL, "dtb", optarg,
3092 &error_abort);
3093 break;
3094 case QEMU_OPTION_cdrom:
3095 drive_add(IF_DEFAULT, 2, optarg, CDROM_OPTS);
3096 break;
3097 case QEMU_OPTION_boot:
3098 opts = qemu_opts_parse_noisily(qemu_find_opts("boot-opts"),
3099 optarg, true);
3100 if (!opts) {
3101 exit(1);
3102 }
3103 break;
3104 case QEMU_OPTION_fda:
3105 case QEMU_OPTION_fdb:
3106 drive_add(IF_FLOPPY, popt->index - QEMU_OPTION_fda,
3107 optarg, FD_OPTS);
3108 break;
3109 case QEMU_OPTION_no_fd_bootchk:
3110 fd_bootchk = 0;
3111 break;
3112 case QEMU_OPTION_netdev:
3113 default_net = 0;
3114 if (net_client_parse(qemu_find_opts("netdev"), optarg) == -1) {
3115 exit(1);
3116 }
3117 break;
3118 case QEMU_OPTION_nic:
3119 default_net = 0;
3120 if (net_client_parse(qemu_find_opts("nic"), optarg) == -1) {
3121 exit(1);
3122 }
3123 break;
3124 case QEMU_OPTION_net:
3125 default_net = 0;
3126 if (net_client_parse(qemu_find_opts("net"), optarg) == -1) {
3127 exit(1);
3128 }
3129 break;
3130 #ifdef CONFIG_LIBISCSI
3131 case QEMU_OPTION_iscsi:
3132 opts = qemu_opts_parse_noisily(qemu_find_opts("iscsi"),
3133 optarg, false);
3134 if (!opts) {
3135 exit(1);
3136 }
3137 break;
3138 #endif
3139 case QEMU_OPTION_audio_help:
3140 audio_legacy_help();
3141 exit (0);
3142 break;
3143 case QEMU_OPTION_audiodev:
3144 audio_parse_option(optarg);
3145 break;
3146 case QEMU_OPTION_soundhw:
3147 select_soundhw (optarg);
3148 break;
3149 case QEMU_OPTION_h:
3150 help(0);
3151 break;
3152 case QEMU_OPTION_version:
3153 version();
3154 exit(0);
3155 break;
3156 case QEMU_OPTION_m:
3157 opts = qemu_opts_parse_noisily(qemu_find_opts("memory"),
3158 optarg, true);
3159 if (!opts) {
3160 exit(EXIT_FAILURE);
3161 }
3162 break;
3163 #ifdef CONFIG_TPM
3164 case QEMU_OPTION_tpmdev:
3165 if (tpm_config_parse(qemu_find_opts("tpmdev"), optarg) < 0) {
3166 exit(1);
3167 }
3168 break;
3169 #endif
3170 case QEMU_OPTION_mempath:
3171 mem_path = optarg;
3172 break;
3173 case QEMU_OPTION_mem_prealloc:
3174 mem_prealloc = 1;
3175 break;
3176 case QEMU_OPTION_d:
3177 log_mask = optarg;
3178 break;
3179 case QEMU_OPTION_D:
3180 log_file = optarg;
3181 break;
3182 case QEMU_OPTION_DFILTER:
3183 qemu_set_dfilter_ranges(optarg, &error_fatal);
3184 break;
3185 case QEMU_OPTION_seed:
3186 qemu_guest_random_seed_main(optarg, &error_fatal);
3187 break;
3188 case QEMU_OPTION_s:
3189 add_device_config(DEV_GDB, "tcp::" DEFAULT_GDBSTUB_PORT);
3190 break;
3191 case QEMU_OPTION_gdb:
3192 add_device_config(DEV_GDB, optarg);
3193 break;
3194 case QEMU_OPTION_L:
3195 if (is_help_option(optarg)) {
3196 list_data_dirs = true;
3197 } else {
3198 qemu_add_data_dir(optarg);
3199 }
3200 break;
3201 case QEMU_OPTION_bios:
3202 qemu_opts_set(qemu_find_opts("machine"), NULL, "firmware", optarg,
3203 &error_abort);
3204 break;
3205 case QEMU_OPTION_singlestep:
3206 singlestep = 1;
3207 break;
3208 case QEMU_OPTION_S:
3209 autostart = 0;
3210 break;
3211 case QEMU_OPTION_k:
3212 keyboard_layout = optarg;
3213 break;
3214 case QEMU_OPTION_vga:
3215 vga_model = optarg;
3216 default_vga = 0;
3217 break;
3218 case QEMU_OPTION_g:
3219 {
3220 const char *p;
3221 int w, h, depth;
3222 p = optarg;
3223 w = strtol(p, (char **)&p, 10);
3224 if (w <= 0) {
3225 graphic_error:
3226 error_report("invalid resolution or depth");
3227 exit(1);
3228 }
3229 if (*p != 'x')
3230 goto graphic_error;
3231 p++;
3232 h = strtol(p, (char **)&p, 10);
3233 if (h <= 0)
3234 goto graphic_error;
3235 if (*p == 'x') {
3236 p++;
3237 depth = strtol(p, (char **)&p, 10);
3238 if (depth != 1 && depth != 2 && depth != 4 &&
3239 depth != 8 && depth != 15 && depth != 16 &&
3240 depth != 24 && depth != 32)
3241 goto graphic_error;
3242 } else if (*p == '\0') {
3243 depth = graphic_depth;
3244 } else {
3245 goto graphic_error;
3246 }
3247
3248 graphic_width = w;
3249 graphic_height = h;
3250 graphic_depth = depth;
3251 }
3252 break;
3253 case QEMU_OPTION_echr:
3254 {
3255 char *r;
3256 term_escape_char = strtol(optarg, &r, 0);
3257 if (r == optarg)
3258 printf("Bad argument to echr\n");
3259 break;
3260 }
3261 case QEMU_OPTION_monitor:
3262 default_monitor = 0;
3263 if (strncmp(optarg, "none", 4)) {
3264 monitor_parse(optarg, "readline", false);
3265 }
3266 break;
3267 case QEMU_OPTION_qmp:
3268 monitor_parse(optarg, "control", false);
3269 default_monitor = 0;
3270 break;
3271 case QEMU_OPTION_qmp_pretty:
3272 monitor_parse(optarg, "control", true);
3273 default_monitor = 0;
3274 break;
3275 case QEMU_OPTION_mon:
3276 opts = qemu_opts_parse_noisily(qemu_find_opts("mon"), optarg,
3277 true);
3278 if (!opts) {
3279 exit(1);
3280 }
3281 default_monitor = 0;
3282 break;
3283 case QEMU_OPTION_chardev:
3284 opts = qemu_opts_parse_noisily(qemu_find_opts("chardev"),
3285 optarg, true);
3286 if (!opts) {
3287 exit(1);
3288 }
3289 break;
3290 case QEMU_OPTION_fsdev:
3291 olist = qemu_find_opts("fsdev");
3292 if (!olist) {
3293 error_report("fsdev support is disabled");
3294 exit(1);
3295 }
3296 opts = qemu_opts_parse_noisily(olist, optarg, true);
3297 if (!opts) {
3298 exit(1);
3299 }
3300 break;
3301 case QEMU_OPTION_virtfs: {
3302 QemuOpts *fsdev;
3303 QemuOpts *device;
3304 const char *writeout, *sock_fd, *socket, *path, *security_model,
3305 *multidevs;
3306
3307 olist = qemu_find_opts("virtfs");
3308 if (!olist) {
3309 error_report("virtfs support is disabled");
3310 exit(1);
3311 }
3312 opts = qemu_opts_parse_noisily(olist, optarg, true);
3313 if (!opts) {
3314 exit(1);
3315 }
3316
3317 if (qemu_opt_get(opts, "fsdriver") == NULL ||
3318 qemu_opt_get(opts, "mount_tag") == NULL) {
3319 error_report("Usage: -virtfs fsdriver,mount_tag=tag");
3320 exit(1);
3321 }
3322 fsdev = qemu_opts_create(qemu_find_opts("fsdev"),
3323 qemu_opts_id(opts) ?:
3324 qemu_opt_get(opts, "mount_tag"),
3325 1, NULL);
3326 if (!fsdev) {
3327 error_report("duplicate or invalid fsdev id: %s",
3328 qemu_opt_get(opts, "mount_tag"));
3329 exit(1);
3330 }
3331
3332 writeout = qemu_opt_get(opts, "writeout");
3333 if (writeout) {
3334 #ifdef CONFIG_SYNC_FILE_RANGE
3335 qemu_opt_set(fsdev, "writeout", writeout, &error_abort);
3336 #else
3337 error_report("writeout=immediate not supported "
3338 "on this platform");
3339 exit(1);
3340 #endif
3341 }
3342 qemu_opt_set(fsdev, "fsdriver",
3343 qemu_opt_get(opts, "fsdriver"), &error_abort);
3344 path = qemu_opt_get(opts, "path");
3345 if (path) {
3346 qemu_opt_set(fsdev, "path", path, &error_abort);
3347 }
3348 security_model = qemu_opt_get(opts, "security_model");
3349 if (security_model) {
3350 qemu_opt_set(fsdev, "security_model", security_model,
3351 &error_abort);
3352 }
3353 socket = qemu_opt_get(opts, "socket");
3354 if (socket) {
3355 qemu_opt_set(fsdev, "socket", socket, &error_abort);
3356 }
3357 sock_fd = qemu_opt_get(opts, "sock_fd");
3358 if (sock_fd) {
3359 qemu_opt_set(fsdev, "sock_fd", sock_fd, &error_abort);
3360 }
3361
3362 qemu_opt_set_bool(fsdev, "readonly",
3363 qemu_opt_get_bool(opts, "readonly", 0),
3364 &error_abort);
3365 multidevs = qemu_opt_get(opts, "multidevs");
3366 if (multidevs) {
3367 qemu_opt_set(fsdev, "multidevs", multidevs, &error_abort);
3368 }
3369 device = qemu_opts_create(qemu_find_opts("device"), NULL, 0,
3370 &error_abort);
3371 qemu_opt_set(device, "driver", "virtio-9p-pci", &error_abort);
3372 qemu_opt_set(device, "fsdev",
3373 qemu_opts_id(fsdev), &error_abort);
3374 qemu_opt_set(device, "mount_tag",
3375 qemu_opt_get(opts, "mount_tag"), &error_abort);
3376 break;
3377 }
3378 case QEMU_OPTION_serial:
3379 add_device_config(DEV_SERIAL, optarg);
3380 default_serial = 0;
3381 if (strncmp(optarg, "mon:", 4) == 0) {
3382 default_monitor = 0;
3383 }
3384 break;
3385 case QEMU_OPTION_watchdog:
3386 if (watchdog) {
3387 error_report("only one watchdog option may be given");
3388 exit(1);
3389 }
3390 watchdog = optarg;
3391 break;
3392 case QEMU_OPTION_watchdog_action:
3393 if (select_watchdog_action(optarg) == -1) {
3394 error_report("unknown -watchdog-action parameter");
3395 exit(1);
3396 }
3397 break;
3398 case QEMU_OPTION_parallel:
3399 add_device_config(DEV_PARALLEL, optarg);
3400 default_parallel = 0;
3401 if (strncmp(optarg, "mon:", 4) == 0) {
3402 default_monitor = 0;
3403 }
3404 break;
3405 case QEMU_OPTION_debugcon:
3406 add_device_config(DEV_DEBUGCON, optarg);
3407 break;
3408 case QEMU_OPTION_loadvm:
3409 loadvm = optarg;
3410 break;
3411 case QEMU_OPTION_full_screen:
3412 dpy.has_full_screen = true;
3413 dpy.full_screen = true;
3414 break;
3415 case QEMU_OPTION_alt_grab:
3416 alt_grab = 1;
3417 break;
3418 case QEMU_OPTION_ctrl_grab:
3419 ctrl_grab = 1;
3420 break;
3421 case QEMU_OPTION_no_quit: