Merge remote-tracking branch 'remotes/bonzini-gitlab/tags/for-upstream' into staging
[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 "sysemu/cpu-timers.h"
78 #include "migration/colo.h"
79 #include "migration/postcopy-ram.h"
80 #include "sysemu/kvm.h"
81 #include "sysemu/hax.h"
82 #include "qapi/qobject-input-visitor.h"
83 #include "qemu/option.h"
84 #include "qemu/config-file.h"
85 #include "qemu-options.h"
86 #include "qemu/main-loop.h"
87 #ifdef CONFIG_VIRTFS
88 #include "fsdev/qemu-fsdev.h"
89 #endif
90 #include "sysemu/qtest.h"
91
92 #include "disas/disas.h"
93
94 #include "trace.h"
95 #include "trace/control.h"
96 #include "qemu/plugin.h"
97 #include "qemu/queue.h"
98 #include "sysemu/arch_init.h"
99
100 #include "ui/qemu-spice.h"
101 #include "qapi/string-input-visitor.h"
102 #include "qapi/opts-visitor.h"
103 #include "qapi/clone-visitor.h"
104 #include "qom/object_interfaces.h"
105 #include "hw/semihosting/semihost.h"
106 #include "crypto/init.h"
107 #include "sysemu/replay.h"
108 #include "qapi/qapi-events-run-state.h"
109 #include "qapi/qapi-visit-block-core.h"
110 #include "qapi/qapi-visit-ui.h"
111 #include "qapi/qapi-commands-block-core.h"
112 #include "qapi/qapi-commands-run-state.h"
113 #include "qapi/qapi-commands-ui.h"
114 #include "qapi/qmp/qerror.h"
115 #include "sysemu/iothread.h"
116 #include "qemu/guest-random.h"
117
118 #define MAX_VIRTIO_CONSOLES 1
119
120 static const char *data_dir[16];
121 static int data_dir_idx;
122 const char *bios_name = NULL;
123 enum vga_retrace_method vga_retrace_method = VGA_RETRACE_DUMB;
124 int display_opengl;
125 const char* keyboard_layout = NULL;
126 ram_addr_t ram_size;
127 bool enable_mlock = false;
128 bool enable_cpu_pm = false;
129 int nb_nics;
130 NICInfo nd_table[MAX_NICS];
131 int autostart;
132 static enum {
133 RTC_BASE_UTC,
134 RTC_BASE_LOCALTIME,
135 RTC_BASE_DATETIME,
136 } rtc_base_type = RTC_BASE_UTC;
137 static time_t rtc_ref_start_datetime;
138 static int rtc_realtime_clock_offset; /* used only with QEMU_CLOCK_REALTIME */
139 static int rtc_host_datetime_offset = -1; /* valid & used only with
140 RTC_BASE_DATETIME */
141 QEMUClockType rtc_clock;
142 int vga_interface_type = VGA_NONE;
143 static DisplayOptions dpy;
144 static int num_serial_hds;
145 static Chardev **serial_hds;
146 Chardev *parallel_hds[MAX_PARALLEL_PORTS];
147 int win2k_install_hack = 0;
148 int singlestep = 0;
149 int no_hpet = 0;
150 int fd_bootchk = 1;
151 static int no_reboot;
152 int no_shutdown = 0;
153 int graphic_rotate = 0;
154 const char *watchdog;
155 QEMUOptionRom option_rom[MAX_OPTION_ROMS];
156 int nb_option_roms;
157 int old_param = 0;
158 const char *qemu_name;
159 int alt_grab = 0;
160 int ctrl_grab = 0;
161 unsigned int nb_prom_envs = 0;
162 const char *prom_envs[MAX_PROM_ENVS];
163 int boot_menu;
164 bool boot_strict;
165 uint8_t *boot_splash_filedata;
166 int only_migratable; /* turn it off unless user states otherwise */
167 bool wakeup_suspend_enabled;
168 int icount_align_option;
169 static const char *qtest_chrdev;
170 static const char *qtest_log;
171
172 /* The bytes in qemu_uuid are in the order specified by RFC4122, _not_ in the
173 * little-endian "wire format" described in the SMBIOS 2.6 specification.
174 */
175 QemuUUID qemu_uuid;
176 bool qemu_uuid_set;
177
178 static NotifierList exit_notifiers =
179 NOTIFIER_LIST_INITIALIZER(exit_notifiers);
180
181 static NotifierList machine_init_done_notifiers =
182 NOTIFIER_LIST_INITIALIZER(machine_init_done_notifiers);
183
184 uint32_t xen_domid;
185 enum xen_mode xen_mode = XEN_EMULATE;
186 bool xen_domid_restrict;
187
188 static int has_defaults = 1;
189 static int default_serial = 1;
190 static int default_parallel = 1;
191 static int default_monitor = 1;
192 static int default_floppy = 1;
193 static int default_cdrom = 1;
194 static int default_sdcard = 1;
195 static int default_vga = 1;
196 static int default_net = 1;
197
198 static struct {
199 const char *driver;
200 int *flag;
201 } default_list[] = {
202 { .driver = "isa-serial", .flag = &default_serial },
203 { .driver = "isa-parallel", .flag = &default_parallel },
204 { .driver = "isa-fdc", .flag = &default_floppy },
205 { .driver = "floppy", .flag = &default_floppy },
206 { .driver = "ide-cd", .flag = &default_cdrom },
207 { .driver = "ide-hd", .flag = &default_cdrom },
208 { .driver = "ide-drive", .flag = &default_cdrom },
209 { .driver = "scsi-cd", .flag = &default_cdrom },
210 { .driver = "scsi-hd", .flag = &default_cdrom },
211 { .driver = "VGA", .flag = &default_vga },
212 { .driver = "isa-vga", .flag = &default_vga },
213 { .driver = "cirrus-vga", .flag = &default_vga },
214 { .driver = "isa-cirrus-vga", .flag = &default_vga },
215 { .driver = "vmware-svga", .flag = &default_vga },
216 { .driver = "qxl-vga", .flag = &default_vga },
217 { .driver = "virtio-vga", .flag = &default_vga },
218 { .driver = "ati-vga", .flag = &default_vga },
219 { .driver = "vhost-user-vga", .flag = &default_vga },
220 };
221
222 static QemuOptsList qemu_rtc_opts = {
223 .name = "rtc",
224 .head = QTAILQ_HEAD_INITIALIZER(qemu_rtc_opts.head),
225 .merge_lists = true,
226 .desc = {
227 {
228 .name = "base",
229 .type = QEMU_OPT_STRING,
230 },{
231 .name = "clock",
232 .type = QEMU_OPT_STRING,
233 },{
234 .name = "driftfix",
235 .type = QEMU_OPT_STRING,
236 },
237 { /* end of list */ }
238 },
239 };
240
241 static QemuOptsList qemu_option_rom_opts = {
242 .name = "option-rom",
243 .implied_opt_name = "romfile",
244 .head = QTAILQ_HEAD_INITIALIZER(qemu_option_rom_opts.head),
245 .desc = {
246 {
247 .name = "bootindex",
248 .type = QEMU_OPT_NUMBER,
249 }, {
250 .name = "romfile",
251 .type = QEMU_OPT_STRING,
252 },
253 { /* end of list */ }
254 },
255 };
256
257 static QemuOptsList qemu_machine_opts = {
258 .name = "machine",
259 .implied_opt_name = "type",
260 .merge_lists = true,
261 .head = QTAILQ_HEAD_INITIALIZER(qemu_machine_opts.head),
262 .desc = {
263 /*
264 * no elements => accept any
265 * sanity checking will happen later
266 * when setting machine properties
267 */
268 { }
269 },
270 };
271
272 static QemuOptsList qemu_accel_opts = {
273 .name = "accel",
274 .implied_opt_name = "accel",
275 .head = QTAILQ_HEAD_INITIALIZER(qemu_accel_opts.head),
276 .desc = {
277 /*
278 * no elements => accept any
279 * sanity checking will happen later
280 * when setting accelerator properties
281 */
282 { }
283 },
284 };
285
286 static QemuOptsList qemu_boot_opts = {
287 .name = "boot-opts",
288 .implied_opt_name = "order",
289 .merge_lists = true,
290 .head = QTAILQ_HEAD_INITIALIZER(qemu_boot_opts.head),
291 .desc = {
292 {
293 .name = "order",
294 .type = QEMU_OPT_STRING,
295 }, {
296 .name = "once",
297 .type = QEMU_OPT_STRING,
298 }, {
299 .name = "menu",
300 .type = QEMU_OPT_BOOL,
301 }, {
302 .name = "splash",
303 .type = QEMU_OPT_STRING,
304 }, {
305 .name = "splash-time",
306 .type = QEMU_OPT_NUMBER,
307 }, {
308 .name = "reboot-timeout",
309 .type = QEMU_OPT_NUMBER,
310 }, {
311 .name = "strict",
312 .type = QEMU_OPT_BOOL,
313 },
314 { /*End of list */ }
315 },
316 };
317
318 static QemuOptsList qemu_add_fd_opts = {
319 .name = "add-fd",
320 .head = QTAILQ_HEAD_INITIALIZER(qemu_add_fd_opts.head),
321 .desc = {
322 {
323 .name = "fd",
324 .type = QEMU_OPT_NUMBER,
325 .help = "file descriptor of which a duplicate is added to fd set",
326 },{
327 .name = "set",
328 .type = QEMU_OPT_NUMBER,
329 .help = "ID of the fd set to add fd to",
330 },{
331 .name = "opaque",
332 .type = QEMU_OPT_STRING,
333 .help = "free-form string used to describe fd",
334 },
335 { /* end of list */ }
336 },
337 };
338
339 static QemuOptsList qemu_object_opts = {
340 .name = "object",
341 .implied_opt_name = "qom-type",
342 .head = QTAILQ_HEAD_INITIALIZER(qemu_object_opts.head),
343 .desc = {
344 { }
345 },
346 };
347
348 static QemuOptsList qemu_tpmdev_opts = {
349 .name = "tpmdev",
350 .implied_opt_name = "type",
351 .head = QTAILQ_HEAD_INITIALIZER(qemu_tpmdev_opts.head),
352 .desc = {
353 /* options are defined in the TPM backends */
354 { /* end of list */ }
355 },
356 };
357
358 static QemuOptsList qemu_realtime_opts = {
359 .name = "realtime",
360 .head = QTAILQ_HEAD_INITIALIZER(qemu_realtime_opts.head),
361 .desc = {
362 {
363 .name = "mlock",
364 .type = QEMU_OPT_BOOL,
365 },
366 { /* end of list */ }
367 },
368 };
369
370 static QemuOptsList qemu_overcommit_opts = {
371 .name = "overcommit",
372 .head = QTAILQ_HEAD_INITIALIZER(qemu_overcommit_opts.head),
373 .desc = {
374 {
375 .name = "mem-lock",
376 .type = QEMU_OPT_BOOL,
377 },
378 {
379 .name = "cpu-pm",
380 .type = QEMU_OPT_BOOL,
381 },
382 { /* end of list */ }
383 },
384 };
385
386 static QemuOptsList qemu_msg_opts = {
387 .name = "msg",
388 .head = QTAILQ_HEAD_INITIALIZER(qemu_msg_opts.head),
389 .desc = {
390 {
391 .name = "timestamp",
392 .type = QEMU_OPT_BOOL,
393 },
394 {
395 .name = "guest-name",
396 .type = QEMU_OPT_BOOL,
397 .help = "Prepends guest name for error messages but only if "
398 "-name guest is set otherwise option is ignored\n",
399 },
400 { /* end of list */ }
401 },
402 };
403
404 static QemuOptsList qemu_name_opts = {
405 .name = "name",
406 .implied_opt_name = "guest",
407 .merge_lists = true,
408 .head = QTAILQ_HEAD_INITIALIZER(qemu_name_opts.head),
409 .desc = {
410 {
411 .name = "guest",
412 .type = QEMU_OPT_STRING,
413 .help = "Sets the name of the guest.\n"
414 "This name will be displayed in the SDL window caption.\n"
415 "The name will also be used for the VNC server",
416 }, {
417 .name = "process",
418 .type = QEMU_OPT_STRING,
419 .help = "Sets the name of the QEMU process, as shown in top etc",
420 }, {
421 .name = "debug-threads",
422 .type = QEMU_OPT_BOOL,
423 .help = "When enabled, name the individual threads; defaults off.\n"
424 "NOTE: The thread names are for debugging and not a\n"
425 "stable API.",
426 },
427 { /* End of list */ }
428 },
429 };
430
431 static QemuOptsList qemu_mem_opts = {
432 .name = "memory",
433 .implied_opt_name = "size",
434 .head = QTAILQ_HEAD_INITIALIZER(qemu_mem_opts.head),
435 .merge_lists = true,
436 .desc = {
437 {
438 .name = "size",
439 .type = QEMU_OPT_SIZE,
440 },
441 {
442 .name = "slots",
443 .type = QEMU_OPT_NUMBER,
444 },
445 {
446 .name = "maxmem",
447 .type = QEMU_OPT_SIZE,
448 },
449 { /* end of list */ }
450 },
451 };
452
453 static QemuOptsList qemu_icount_opts = {
454 .name = "icount",
455 .implied_opt_name = "shift",
456 .merge_lists = true,
457 .head = QTAILQ_HEAD_INITIALIZER(qemu_icount_opts.head),
458 .desc = {
459 {
460 .name = "shift",
461 .type = QEMU_OPT_STRING,
462 }, {
463 .name = "align",
464 .type = QEMU_OPT_BOOL,
465 }, {
466 .name = "sleep",
467 .type = QEMU_OPT_BOOL,
468 }, {
469 .name = "rr",
470 .type = QEMU_OPT_STRING,
471 }, {
472 .name = "rrfile",
473 .type = QEMU_OPT_STRING,
474 }, {
475 .name = "rrsnapshot",
476 .type = QEMU_OPT_STRING,
477 },
478 { /* end of list */ }
479 },
480 };
481
482 static QemuOptsList qemu_fw_cfg_opts = {
483 .name = "fw_cfg",
484 .implied_opt_name = "name",
485 .head = QTAILQ_HEAD_INITIALIZER(qemu_fw_cfg_opts.head),
486 .desc = {
487 {
488 .name = "name",
489 .type = QEMU_OPT_STRING,
490 .help = "Sets the fw_cfg name of the blob to be inserted",
491 }, {
492 .name = "file",
493 .type = QEMU_OPT_STRING,
494 .help = "Sets the name of the file from which "
495 "the fw_cfg blob will be loaded",
496 }, {
497 .name = "string",
498 .type = QEMU_OPT_STRING,
499 .help = "Sets content of the blob to be inserted from a string",
500 }, {
501 .name = "gen_id",
502 .type = QEMU_OPT_STRING,
503 .help = "Sets id of the object generating the fw_cfg blob "
504 "to be inserted",
505 },
506 { /* end of list */ }
507 },
508 };
509
510 /**
511 * Get machine options
512 *
513 * Returns: machine options (never null).
514 */
515 QemuOpts *qemu_get_machine_opts(void)
516 {
517 return qemu_find_opts_singleton("machine");
518 }
519
520 const char *qemu_get_vm_name(void)
521 {
522 return qemu_name;
523 }
524
525 static void res_free(void)
526 {
527 g_free(boot_splash_filedata);
528 boot_splash_filedata = NULL;
529 }
530
531 static int default_driver_check(void *opaque, QemuOpts *opts, Error **errp)
532 {
533 const char *driver = qemu_opt_get(opts, "driver");
534 int i;
535
536 if (!driver)
537 return 0;
538 for (i = 0; i < ARRAY_SIZE(default_list); i++) {
539 if (strcmp(default_list[i].driver, driver) != 0)
540 continue;
541 *(default_list[i].flag) = 0;
542 }
543 return 0;
544 }
545
546 /***********************************************************/
547 /* QEMU state */
548
549 static RunState current_run_state = RUN_STATE_PRECONFIG;
550
551 /* We use RUN_STATE__MAX but any invalid value will do */
552 static RunState vmstop_requested = RUN_STATE__MAX;
553 static QemuMutex vmstop_lock;
554
555 typedef struct {
556 RunState from;
557 RunState to;
558 } RunStateTransition;
559
560 static const RunStateTransition runstate_transitions_def[] = {
561 /* from -> to */
562 { RUN_STATE_PRECONFIG, RUN_STATE_PRELAUNCH },
563 /* Early switch to inmigrate state to allow -incoming CLI option work
564 * as it used to. TODO: delay actual switching to inmigrate state to
565 * the point after machine is built and remove this hack.
566 */
567 { RUN_STATE_PRECONFIG, RUN_STATE_INMIGRATE },
568
569 { RUN_STATE_DEBUG, RUN_STATE_RUNNING },
570 { RUN_STATE_DEBUG, RUN_STATE_FINISH_MIGRATE },
571 { RUN_STATE_DEBUG, RUN_STATE_PRELAUNCH },
572
573 { RUN_STATE_INMIGRATE, RUN_STATE_INTERNAL_ERROR },
574 { RUN_STATE_INMIGRATE, RUN_STATE_IO_ERROR },
575 { RUN_STATE_INMIGRATE, RUN_STATE_PAUSED },
576 { RUN_STATE_INMIGRATE, RUN_STATE_RUNNING },
577 { RUN_STATE_INMIGRATE, RUN_STATE_SHUTDOWN },
578 { RUN_STATE_INMIGRATE, RUN_STATE_SUSPENDED },
579 { RUN_STATE_INMIGRATE, RUN_STATE_WATCHDOG },
580 { RUN_STATE_INMIGRATE, RUN_STATE_GUEST_PANICKED },
581 { RUN_STATE_INMIGRATE, RUN_STATE_FINISH_MIGRATE },
582 { RUN_STATE_INMIGRATE, RUN_STATE_PRELAUNCH },
583 { RUN_STATE_INMIGRATE, RUN_STATE_POSTMIGRATE },
584 { RUN_STATE_INMIGRATE, RUN_STATE_COLO },
585
586 { RUN_STATE_INTERNAL_ERROR, RUN_STATE_PAUSED },
587 { RUN_STATE_INTERNAL_ERROR, RUN_STATE_FINISH_MIGRATE },
588 { RUN_STATE_INTERNAL_ERROR, RUN_STATE_PRELAUNCH },
589
590 { RUN_STATE_IO_ERROR, RUN_STATE_RUNNING },
591 { RUN_STATE_IO_ERROR, RUN_STATE_FINISH_MIGRATE },
592 { RUN_STATE_IO_ERROR, RUN_STATE_PRELAUNCH },
593
594 { RUN_STATE_PAUSED, RUN_STATE_RUNNING },
595 { RUN_STATE_PAUSED, RUN_STATE_FINISH_MIGRATE },
596 { RUN_STATE_PAUSED, RUN_STATE_POSTMIGRATE },
597 { RUN_STATE_PAUSED, RUN_STATE_PRELAUNCH },
598 { RUN_STATE_PAUSED, RUN_STATE_COLO},
599
600 { RUN_STATE_POSTMIGRATE, RUN_STATE_RUNNING },
601 { RUN_STATE_POSTMIGRATE, RUN_STATE_FINISH_MIGRATE },
602 { RUN_STATE_POSTMIGRATE, RUN_STATE_PRELAUNCH },
603
604 { RUN_STATE_PRELAUNCH, RUN_STATE_RUNNING },
605 { RUN_STATE_PRELAUNCH, RUN_STATE_FINISH_MIGRATE },
606 { RUN_STATE_PRELAUNCH, RUN_STATE_INMIGRATE },
607
608 { RUN_STATE_FINISH_MIGRATE, RUN_STATE_RUNNING },
609 { RUN_STATE_FINISH_MIGRATE, RUN_STATE_PAUSED },
610 { RUN_STATE_FINISH_MIGRATE, RUN_STATE_POSTMIGRATE },
611 { RUN_STATE_FINISH_MIGRATE, RUN_STATE_PRELAUNCH },
612 { RUN_STATE_FINISH_MIGRATE, RUN_STATE_COLO},
613
614 { RUN_STATE_RESTORE_VM, RUN_STATE_RUNNING },
615 { RUN_STATE_RESTORE_VM, RUN_STATE_PRELAUNCH },
616
617 { RUN_STATE_COLO, RUN_STATE_RUNNING },
618
619 { RUN_STATE_RUNNING, RUN_STATE_DEBUG },
620 { RUN_STATE_RUNNING, RUN_STATE_INTERNAL_ERROR },
621 { RUN_STATE_RUNNING, RUN_STATE_IO_ERROR },
622 { RUN_STATE_RUNNING, RUN_STATE_PAUSED },
623 { RUN_STATE_RUNNING, RUN_STATE_FINISH_MIGRATE },
624 { RUN_STATE_RUNNING, RUN_STATE_RESTORE_VM },
625 { RUN_STATE_RUNNING, RUN_STATE_SAVE_VM },
626 { RUN_STATE_RUNNING, RUN_STATE_SHUTDOWN },
627 { RUN_STATE_RUNNING, RUN_STATE_WATCHDOG },
628 { RUN_STATE_RUNNING, RUN_STATE_GUEST_PANICKED },
629 { RUN_STATE_RUNNING, RUN_STATE_COLO},
630
631 { RUN_STATE_SAVE_VM, RUN_STATE_RUNNING },
632
633 { RUN_STATE_SHUTDOWN, RUN_STATE_PAUSED },
634 { RUN_STATE_SHUTDOWN, RUN_STATE_FINISH_MIGRATE },
635 { RUN_STATE_SHUTDOWN, RUN_STATE_PRELAUNCH },
636
637 { RUN_STATE_DEBUG, RUN_STATE_SUSPENDED },
638 { RUN_STATE_RUNNING, RUN_STATE_SUSPENDED },
639 { RUN_STATE_SUSPENDED, RUN_STATE_RUNNING },
640 { RUN_STATE_SUSPENDED, RUN_STATE_FINISH_MIGRATE },
641 { RUN_STATE_SUSPENDED, RUN_STATE_PRELAUNCH },
642 { RUN_STATE_SUSPENDED, RUN_STATE_COLO},
643
644 { RUN_STATE_WATCHDOG, RUN_STATE_RUNNING },
645 { RUN_STATE_WATCHDOG, RUN_STATE_FINISH_MIGRATE },
646 { RUN_STATE_WATCHDOG, RUN_STATE_PRELAUNCH },
647 { RUN_STATE_WATCHDOG, RUN_STATE_COLO},
648
649 { RUN_STATE_GUEST_PANICKED, RUN_STATE_RUNNING },
650 { RUN_STATE_GUEST_PANICKED, RUN_STATE_FINISH_MIGRATE },
651 { RUN_STATE_GUEST_PANICKED, RUN_STATE_PRELAUNCH },
652
653 { RUN_STATE__MAX, RUN_STATE__MAX },
654 };
655
656 static bool runstate_valid_transitions[RUN_STATE__MAX][RUN_STATE__MAX];
657
658 bool runstate_check(RunState state)
659 {
660 return current_run_state == state;
661 }
662
663 bool runstate_store(char *str, size_t size)
664 {
665 const char *state = RunState_str(current_run_state);
666 size_t len = strlen(state) + 1;
667
668 if (len > size) {
669 return false;
670 }
671 memcpy(str, state, len);
672 return true;
673 }
674
675 static void runstate_init(void)
676 {
677 const RunStateTransition *p;
678
679 memset(&runstate_valid_transitions, 0, sizeof(runstate_valid_transitions));
680 for (p = &runstate_transitions_def[0]; p->from != RUN_STATE__MAX; p++) {
681 runstate_valid_transitions[p->from][p->to] = true;
682 }
683
684 qemu_mutex_init(&vmstop_lock);
685 }
686
687 /* This function will abort() on invalid state transitions */
688 void runstate_set(RunState new_state)
689 {
690 assert(new_state < RUN_STATE__MAX);
691
692 trace_runstate_set(current_run_state, RunState_str(current_run_state),
693 new_state, RunState_str(new_state));
694
695 if (current_run_state == new_state) {
696 return;
697 }
698
699 if (!runstate_valid_transitions[current_run_state][new_state]) {
700 error_report("invalid runstate transition: '%s' -> '%s'",
701 RunState_str(current_run_state),
702 RunState_str(new_state));
703 abort();
704 }
705
706 current_run_state = new_state;
707 }
708
709 int runstate_is_running(void)
710 {
711 return runstate_check(RUN_STATE_RUNNING);
712 }
713
714 bool runstate_needs_reset(void)
715 {
716 return runstate_check(RUN_STATE_INTERNAL_ERROR) ||
717 runstate_check(RUN_STATE_SHUTDOWN);
718 }
719
720 StatusInfo *qmp_query_status(Error **errp)
721 {
722 StatusInfo *info = g_malloc0(sizeof(*info));
723
724 info->running = runstate_is_running();
725 info->singlestep = singlestep;
726 info->status = current_run_state;
727
728 return info;
729 }
730
731 bool qemu_vmstop_requested(RunState *r)
732 {
733 qemu_mutex_lock(&vmstop_lock);
734 *r = vmstop_requested;
735 vmstop_requested = RUN_STATE__MAX;
736 qemu_mutex_unlock(&vmstop_lock);
737 return *r < RUN_STATE__MAX;
738 }
739
740 void qemu_system_vmstop_request_prepare(void)
741 {
742 qemu_mutex_lock(&vmstop_lock);
743 }
744
745 void qemu_system_vmstop_request(RunState state)
746 {
747 vmstop_requested = state;
748 qemu_mutex_unlock(&vmstop_lock);
749 qemu_notify_event();
750 }
751
752 /***********************************************************/
753 /* RTC reference time/date access */
754 static time_t qemu_ref_timedate(QEMUClockType clock)
755 {
756 time_t value = qemu_clock_get_ms(clock) / 1000;
757 switch (clock) {
758 case QEMU_CLOCK_REALTIME:
759 value -= rtc_realtime_clock_offset;
760 /* fall through */
761 case QEMU_CLOCK_VIRTUAL:
762 value += rtc_ref_start_datetime;
763 break;
764 case QEMU_CLOCK_HOST:
765 if (rtc_base_type == RTC_BASE_DATETIME) {
766 value -= rtc_host_datetime_offset;
767 }
768 break;
769 default:
770 assert(0);
771 }
772 return value;
773 }
774
775 void qemu_get_timedate(struct tm *tm, int offset)
776 {
777 time_t ti = qemu_ref_timedate(rtc_clock);
778
779 ti += offset;
780
781 switch (rtc_base_type) {
782 case RTC_BASE_DATETIME:
783 case RTC_BASE_UTC:
784 gmtime_r(&ti, tm);
785 break;
786 case RTC_BASE_LOCALTIME:
787 localtime_r(&ti, tm);
788 break;
789 }
790 }
791
792 int qemu_timedate_diff(struct tm *tm)
793 {
794 time_t seconds;
795
796 switch (rtc_base_type) {
797 case RTC_BASE_DATETIME:
798 case RTC_BASE_UTC:
799 seconds = mktimegm(tm);
800 break;
801 case RTC_BASE_LOCALTIME:
802 {
803 struct tm tmp = *tm;
804 tmp.tm_isdst = -1; /* use timezone to figure it out */
805 seconds = mktime(&tmp);
806 break;
807 }
808 default:
809 abort();
810 }
811
812 return seconds - qemu_ref_timedate(QEMU_CLOCK_HOST);
813 }
814
815 static void configure_rtc_base_datetime(const char *startdate)
816 {
817 time_t rtc_start_datetime;
818 struct tm tm;
819
820 if (sscanf(startdate, "%d-%d-%dT%d:%d:%d", &tm.tm_year, &tm.tm_mon,
821 &tm.tm_mday, &tm.tm_hour, &tm.tm_min, &tm.tm_sec) == 6) {
822 /* OK */
823 } else if (sscanf(startdate, "%d-%d-%d",
824 &tm.tm_year, &tm.tm_mon, &tm.tm_mday) == 3) {
825 tm.tm_hour = 0;
826 tm.tm_min = 0;
827 tm.tm_sec = 0;
828 } else {
829 goto date_fail;
830 }
831 tm.tm_year -= 1900;
832 tm.tm_mon--;
833 rtc_start_datetime = mktimegm(&tm);
834 if (rtc_start_datetime == -1) {
835 date_fail:
836 error_report("invalid datetime format");
837 error_printf("valid formats: "
838 "'2006-06-17T16:01:21' or '2006-06-17'\n");
839 exit(1);
840 }
841 rtc_host_datetime_offset = rtc_ref_start_datetime - rtc_start_datetime;
842 rtc_ref_start_datetime = rtc_start_datetime;
843 }
844
845 static void configure_rtc(QemuOpts *opts)
846 {
847 const char *value;
848
849 /* Set defaults */
850 rtc_clock = QEMU_CLOCK_HOST;
851 rtc_ref_start_datetime = qemu_clock_get_ms(QEMU_CLOCK_HOST) / 1000;
852 rtc_realtime_clock_offset = qemu_clock_get_ms(QEMU_CLOCK_REALTIME) / 1000;
853
854 value = qemu_opt_get(opts, "base");
855 if (value) {
856 if (!strcmp(value, "utc")) {
857 rtc_base_type = RTC_BASE_UTC;
858 } else if (!strcmp(value, "localtime")) {
859 Error *blocker = NULL;
860 rtc_base_type = RTC_BASE_LOCALTIME;
861 error_setg(&blocker, QERR_REPLAY_NOT_SUPPORTED,
862 "-rtc base=localtime");
863 replay_add_blocker(blocker);
864 } else {
865 rtc_base_type = RTC_BASE_DATETIME;
866 configure_rtc_base_datetime(value);
867 }
868 }
869 value = qemu_opt_get(opts, "clock");
870 if (value) {
871 if (!strcmp(value, "host")) {
872 rtc_clock = QEMU_CLOCK_HOST;
873 } else if (!strcmp(value, "rt")) {
874 rtc_clock = QEMU_CLOCK_REALTIME;
875 } else if (!strcmp(value, "vm")) {
876 rtc_clock = QEMU_CLOCK_VIRTUAL;
877 } else {
878 error_report("invalid option value '%s'", value);
879 exit(1);
880 }
881 }
882 value = qemu_opt_get(opts, "driftfix");
883 if (value) {
884 if (!strcmp(value, "slew")) {
885 object_register_sugar_prop("mc146818rtc",
886 "lost_tick_policy",
887 "slew");
888 } else if (!strcmp(value, "none")) {
889 /* discard is default */
890 } else {
891 error_report("invalid option value '%s'", value);
892 exit(1);
893 }
894 }
895 }
896
897 static int parse_name(void *opaque, QemuOpts *opts, Error **errp)
898 {
899 const char *proc_name;
900
901 if (qemu_opt_get(opts, "debug-threads")) {
902 qemu_thread_naming(qemu_opt_get_bool(opts, "debug-threads", false));
903 }
904 qemu_name = qemu_opt_get(opts, "guest");
905
906 proc_name = qemu_opt_get(opts, "process");
907 if (proc_name) {
908 os_set_proc_name(proc_name);
909 }
910
911 return 0;
912 }
913
914 bool defaults_enabled(void)
915 {
916 return has_defaults;
917 }
918
919 #ifndef _WIN32
920 static int parse_add_fd(void *opaque, QemuOpts *opts, Error **errp)
921 {
922 int fd, dupfd, flags;
923 int64_t fdset_id;
924 const char *fd_opaque = NULL;
925 AddfdInfo *fdinfo;
926
927 fd = qemu_opt_get_number(opts, "fd", -1);
928 fdset_id = qemu_opt_get_number(opts, "set", -1);
929 fd_opaque = qemu_opt_get(opts, "opaque");
930
931 if (fd < 0) {
932 error_setg(errp, "fd option is required and must be non-negative");
933 return -1;
934 }
935
936 if (fd <= STDERR_FILENO) {
937 error_setg(errp, "fd cannot be a standard I/O stream");
938 return -1;
939 }
940
941 /*
942 * All fds inherited across exec() necessarily have FD_CLOEXEC
943 * clear, while qemu sets FD_CLOEXEC on all other fds used internally.
944 */
945 flags = fcntl(fd, F_GETFD);
946 if (flags == -1 || (flags & FD_CLOEXEC)) {
947 error_setg(errp, "fd is not valid or already in use");
948 return -1;
949 }
950
951 if (fdset_id < 0) {
952 error_setg(errp, "set option is required and must be non-negative");
953 return -1;
954 }
955
956 #ifdef F_DUPFD_CLOEXEC
957 dupfd = fcntl(fd, F_DUPFD_CLOEXEC, 0);
958 #else
959 dupfd = dup(fd);
960 if (dupfd != -1) {
961 qemu_set_cloexec(dupfd);
962 }
963 #endif
964 if (dupfd == -1) {
965 error_setg(errp, "error duplicating fd: %s", strerror(errno));
966 return -1;
967 }
968
969 /* add the duplicate fd, and optionally the opaque string, to the fd set */
970 fdinfo = monitor_fdset_add_fd(dupfd, true, fdset_id, !!fd_opaque, fd_opaque,
971 &error_abort);
972 g_free(fdinfo);
973
974 return 0;
975 }
976
977 static int cleanup_add_fd(void *opaque, QemuOpts *opts, Error **errp)
978 {
979 int fd;
980
981 fd = qemu_opt_get_number(opts, "fd", -1);
982 close(fd);
983
984 return 0;
985 }
986 #endif
987
988 /***********************************************************/
989 /* QEMU Block devices */
990
991 #define HD_OPTS "media=disk"
992 #define CDROM_OPTS "media=cdrom"
993 #define FD_OPTS ""
994 #define PFLASH_OPTS ""
995 #define MTD_OPTS ""
996 #define SD_OPTS ""
997
998 static int drive_init_func(void *opaque, QemuOpts *opts, Error **errp)
999 {
1000 BlockInterfaceType *block_default_type = opaque;
1001
1002 return drive_new(opts, *block_default_type, errp) == NULL;
1003 }
1004
1005 static int drive_enable_snapshot(void *opaque, QemuOpts *opts, Error **errp)
1006 {
1007 if (qemu_opt_get(opts, "snapshot") == NULL) {
1008 qemu_opt_set(opts, "snapshot", "on", &error_abort);
1009 }
1010 return 0;
1011 }
1012
1013 static void default_drive(int enable, int snapshot, BlockInterfaceType type,
1014 int index, const char *optstr)
1015 {
1016 QemuOpts *opts;
1017 DriveInfo *dinfo;
1018
1019 if (!enable || drive_get_by_index(type, index)) {
1020 return;
1021 }
1022
1023 opts = drive_add(type, index, NULL, optstr);
1024 if (snapshot) {
1025 drive_enable_snapshot(NULL, opts, NULL);
1026 }
1027
1028 dinfo = drive_new(opts, type, &error_abort);
1029 dinfo->is_default = true;
1030
1031 }
1032
1033 typedef struct BlockdevOptionsQueueEntry {
1034 BlockdevOptions *bdo;
1035 Location loc;
1036 QSIMPLEQ_ENTRY(BlockdevOptionsQueueEntry) entry;
1037 } BlockdevOptionsQueueEntry;
1038
1039 typedef QSIMPLEQ_HEAD(, BlockdevOptionsQueueEntry) BlockdevOptionsQueue;
1040
1041 static void configure_blockdev(BlockdevOptionsQueue *bdo_queue,
1042 MachineClass *machine_class, int snapshot)
1043 {
1044 /*
1045 * If the currently selected machine wishes to override the
1046 * units-per-bus property of its default HBA interface type, do so
1047 * now.
1048 */
1049 if (machine_class->units_per_default_bus) {
1050 override_max_devs(machine_class->block_default_type,
1051 machine_class->units_per_default_bus);
1052 }
1053
1054 /* open the virtual block devices */
1055 while (!QSIMPLEQ_EMPTY(bdo_queue)) {
1056 BlockdevOptionsQueueEntry *bdo = QSIMPLEQ_FIRST(bdo_queue);
1057
1058 QSIMPLEQ_REMOVE_HEAD(bdo_queue, entry);
1059 loc_push_restore(&bdo->loc);
1060 qmp_blockdev_add(bdo->bdo, &error_fatal);
1061 loc_pop(&bdo->loc);
1062 qapi_free_BlockdevOptions(bdo->bdo);
1063 g_free(bdo);
1064 }
1065 if (snapshot) {
1066 qemu_opts_foreach(qemu_find_opts("drive"), drive_enable_snapshot,
1067 NULL, NULL);
1068 }
1069 if (qemu_opts_foreach(qemu_find_opts("drive"), drive_init_func,
1070 &machine_class->block_default_type, &error_fatal)) {
1071 /* We printed help */
1072 exit(0);
1073 }
1074
1075 default_drive(default_cdrom, snapshot, machine_class->block_default_type, 2,
1076 CDROM_OPTS);
1077 default_drive(default_floppy, snapshot, IF_FLOPPY, 0, FD_OPTS);
1078 default_drive(default_sdcard, snapshot, IF_SD, 0, SD_OPTS);
1079
1080 }
1081
1082 static QemuOptsList qemu_smp_opts = {
1083 .name = "smp-opts",
1084 .implied_opt_name = "cpus",
1085 .merge_lists = true,
1086 .head = QTAILQ_HEAD_INITIALIZER(qemu_smp_opts.head),
1087 .desc = {
1088 {
1089 .name = "cpus",
1090 .type = QEMU_OPT_NUMBER,
1091 }, {
1092 .name = "sockets",
1093 .type = QEMU_OPT_NUMBER,
1094 }, {
1095 .name = "dies",
1096 .type = QEMU_OPT_NUMBER,
1097 }, {
1098 .name = "cores",
1099 .type = QEMU_OPT_NUMBER,
1100 }, {
1101 .name = "threads",
1102 .type = QEMU_OPT_NUMBER,
1103 }, {
1104 .name = "maxcpus",
1105 .type = QEMU_OPT_NUMBER,
1106 },
1107 { /*End of list */ }
1108 },
1109 };
1110
1111 static void realtime_init(void)
1112 {
1113 if (enable_mlock) {
1114 if (os_mlock() < 0) {
1115 error_report("locking memory failed");
1116 exit(1);
1117 }
1118 }
1119 }
1120
1121
1122 static void configure_msg(QemuOpts *opts)
1123 {
1124 error_with_timestamp = qemu_opt_get_bool(opts, "timestamp", false);
1125 error_with_guestname = qemu_opt_get_bool(opts, "guest-name", false);
1126 }
1127
1128
1129 /***********************************************************/
1130 /* USB devices */
1131
1132 static int usb_device_add(const char *devname)
1133 {
1134 USBDevice *dev = NULL;
1135
1136 if (!machine_usb(current_machine)) {
1137 return -1;
1138 }
1139
1140 dev = usbdevice_create(devname);
1141 if (!dev)
1142 return -1;
1143
1144 return 0;
1145 }
1146
1147 static int usb_parse(const char *cmdline)
1148 {
1149 int r;
1150 r = usb_device_add(cmdline);
1151 if (r < 0) {
1152 error_report("could not add USB device '%s'", cmdline);
1153 }
1154 return r;
1155 }
1156
1157 /***********************************************************/
1158 /* machine registration */
1159
1160 MachineState *current_machine;
1161
1162 static MachineClass *find_machine(const char *name, GSList *machines)
1163 {
1164 GSList *el;
1165
1166 for (el = machines; el; el = el->next) {
1167 MachineClass *mc = el->data;
1168
1169 if (!strcmp(mc->name, name) || !g_strcmp0(mc->alias, name)) {
1170 return mc;
1171 }
1172 }
1173
1174 return NULL;
1175 }
1176
1177 static MachineClass *find_default_machine(GSList *machines)
1178 {
1179 GSList *el;
1180 MachineClass *default_machineclass = NULL;
1181
1182 for (el = machines; el; el = el->next) {
1183 MachineClass *mc = el->data;
1184
1185 if (mc->is_default) {
1186 assert(default_machineclass == NULL && "Multiple default machines");
1187 default_machineclass = mc;
1188 }
1189 }
1190
1191 return default_machineclass;
1192 }
1193
1194 static int machine_help_func(QemuOpts *opts, MachineState *machine)
1195 {
1196 ObjectProperty *prop;
1197 ObjectPropertyIterator iter;
1198
1199 if (!qemu_opt_has_help_opt(opts)) {
1200 return 0;
1201 }
1202
1203 object_property_iter_init(&iter, OBJECT(machine));
1204 while ((prop = object_property_iter_next(&iter))) {
1205 if (!prop->set) {
1206 continue;
1207 }
1208
1209 printf("%s.%s=%s", MACHINE_GET_CLASS(machine)->name,
1210 prop->name, prop->type);
1211 if (prop->description) {
1212 printf(" (%s)\n", prop->description);
1213 } else {
1214 printf("\n");
1215 }
1216 }
1217
1218 return 1;
1219 }
1220
1221 struct VMChangeStateEntry {
1222 VMChangeStateHandler *cb;
1223 void *opaque;
1224 QTAILQ_ENTRY(VMChangeStateEntry) entries;
1225 int priority;
1226 };
1227
1228 static QTAILQ_HEAD(, VMChangeStateEntry) vm_change_state_head;
1229
1230 /**
1231 * qemu_add_vm_change_state_handler_prio:
1232 * @cb: the callback to invoke
1233 * @opaque: user data passed to the callback
1234 * @priority: low priorities execute first when the vm runs and the reverse is
1235 * true when the vm stops
1236 *
1237 * Register a callback function that is invoked when the vm starts or stops
1238 * running.
1239 *
1240 * Returns: an entry to be freed using qemu_del_vm_change_state_handler()
1241 */
1242 VMChangeStateEntry *qemu_add_vm_change_state_handler_prio(
1243 VMChangeStateHandler *cb, void *opaque, int priority)
1244 {
1245 VMChangeStateEntry *e;
1246 VMChangeStateEntry *other;
1247
1248 e = g_malloc0(sizeof(*e));
1249 e->cb = cb;
1250 e->opaque = opaque;
1251 e->priority = priority;
1252
1253 /* Keep list sorted in ascending priority order */
1254 QTAILQ_FOREACH(other, &vm_change_state_head, entries) {
1255 if (priority < other->priority) {
1256 QTAILQ_INSERT_BEFORE(other, e, entries);
1257 return e;
1258 }
1259 }
1260
1261 QTAILQ_INSERT_TAIL(&vm_change_state_head, e, entries);
1262 return e;
1263 }
1264
1265 VMChangeStateEntry *qemu_add_vm_change_state_handler(VMChangeStateHandler *cb,
1266 void *opaque)
1267 {
1268 return qemu_add_vm_change_state_handler_prio(cb, opaque, 0);
1269 }
1270
1271 void qemu_del_vm_change_state_handler(VMChangeStateEntry *e)
1272 {
1273 QTAILQ_REMOVE(&vm_change_state_head, e, entries);
1274 g_free(e);
1275 }
1276
1277 void vm_state_notify(int running, RunState state)
1278 {
1279 VMChangeStateEntry *e, *next;
1280
1281 trace_vm_state_notify(running, state, RunState_str(state));
1282
1283 if (running) {
1284 QTAILQ_FOREACH_SAFE(e, &vm_change_state_head, entries, next) {
1285 e->cb(e->opaque, running, state);
1286 }
1287 } else {
1288 QTAILQ_FOREACH_REVERSE_SAFE(e, &vm_change_state_head, entries, next) {
1289 e->cb(e->opaque, running, state);
1290 }
1291 }
1292 }
1293
1294 static ShutdownCause reset_requested;
1295 static ShutdownCause shutdown_requested;
1296 static int shutdown_signal;
1297 static pid_t shutdown_pid;
1298 static int powerdown_requested;
1299 static int debug_requested;
1300 static int suspend_requested;
1301 static bool preconfig_exit_requested = true;
1302 static WakeupReason wakeup_reason;
1303 static NotifierList powerdown_notifiers =
1304 NOTIFIER_LIST_INITIALIZER(powerdown_notifiers);
1305 static NotifierList suspend_notifiers =
1306 NOTIFIER_LIST_INITIALIZER(suspend_notifiers);
1307 static NotifierList wakeup_notifiers =
1308 NOTIFIER_LIST_INITIALIZER(wakeup_notifiers);
1309 static NotifierList shutdown_notifiers =
1310 NOTIFIER_LIST_INITIALIZER(shutdown_notifiers);
1311 static uint32_t wakeup_reason_mask = ~(1 << QEMU_WAKEUP_REASON_NONE);
1312
1313 ShutdownCause qemu_shutdown_requested_get(void)
1314 {
1315 return shutdown_requested;
1316 }
1317
1318 ShutdownCause qemu_reset_requested_get(void)
1319 {
1320 return reset_requested;
1321 }
1322
1323 static int qemu_shutdown_requested(void)
1324 {
1325 return qatomic_xchg(&shutdown_requested, SHUTDOWN_CAUSE_NONE);
1326 }
1327
1328 static void qemu_kill_report(void)
1329 {
1330 if (!qtest_driver() && shutdown_signal) {
1331 if (shutdown_pid == 0) {
1332 /* This happens for eg ^C at the terminal, so it's worth
1333 * avoiding printing an odd message in that case.
1334 */
1335 error_report("terminating on signal %d", shutdown_signal);
1336 } else {
1337 char *shutdown_cmd = qemu_get_pid_name(shutdown_pid);
1338
1339 error_report("terminating on signal %d from pid " FMT_pid " (%s)",
1340 shutdown_signal, shutdown_pid,
1341 shutdown_cmd ? shutdown_cmd : "<unknown process>");
1342 g_free(shutdown_cmd);
1343 }
1344 shutdown_signal = 0;
1345 }
1346 }
1347
1348 static ShutdownCause qemu_reset_requested(void)
1349 {
1350 ShutdownCause r = reset_requested;
1351
1352 if (r && replay_checkpoint(CHECKPOINT_RESET_REQUESTED)) {
1353 reset_requested = SHUTDOWN_CAUSE_NONE;
1354 return r;
1355 }
1356 return SHUTDOWN_CAUSE_NONE;
1357 }
1358
1359 static int qemu_suspend_requested(void)
1360 {
1361 int r = suspend_requested;
1362 if (r && replay_checkpoint(CHECKPOINT_SUSPEND_REQUESTED)) {
1363 suspend_requested = 0;
1364 return r;
1365 }
1366 return false;
1367 }
1368
1369 static WakeupReason qemu_wakeup_requested(void)
1370 {
1371 return wakeup_reason;
1372 }
1373
1374 static int qemu_powerdown_requested(void)
1375 {
1376 int r = powerdown_requested;
1377 powerdown_requested = 0;
1378 return r;
1379 }
1380
1381 static int qemu_debug_requested(void)
1382 {
1383 int r = debug_requested;
1384 debug_requested = 0;
1385 return r;
1386 }
1387
1388 void qemu_exit_preconfig_request(void)
1389 {
1390 preconfig_exit_requested = true;
1391 }
1392
1393 /*
1394 * Reset the VM. Issue an event unless @reason is SHUTDOWN_CAUSE_NONE.
1395 */
1396 void qemu_system_reset(ShutdownCause reason)
1397 {
1398 MachineClass *mc;
1399
1400 mc = current_machine ? MACHINE_GET_CLASS(current_machine) : NULL;
1401
1402 cpu_synchronize_all_states();
1403
1404 if (mc && mc->reset) {
1405 mc->reset(current_machine);
1406 } else {
1407 qemu_devices_reset();
1408 }
1409 if (reason && reason != SHUTDOWN_CAUSE_SUBSYSTEM_RESET) {
1410 qapi_event_send_reset(shutdown_caused_by_guest(reason), reason);
1411 }
1412 cpu_synchronize_all_post_reset();
1413 }
1414
1415 /*
1416 * Wake the VM after suspend.
1417 */
1418 static void qemu_system_wakeup(void)
1419 {
1420 MachineClass *mc;
1421
1422 mc = current_machine ? MACHINE_GET_CLASS(current_machine) : NULL;
1423
1424 if (mc && mc->wakeup) {
1425 mc->wakeup(current_machine);
1426 }
1427 }
1428
1429 void qemu_system_guest_panicked(GuestPanicInformation *info)
1430 {
1431 qemu_log_mask(LOG_GUEST_ERROR, "Guest crashed");
1432
1433 if (current_cpu) {
1434 current_cpu->crash_occurred = true;
1435 }
1436 qapi_event_send_guest_panicked(GUEST_PANIC_ACTION_PAUSE,
1437 !!info, info);
1438 vm_stop(RUN_STATE_GUEST_PANICKED);
1439 if (!no_shutdown) {
1440 qapi_event_send_guest_panicked(GUEST_PANIC_ACTION_POWEROFF,
1441 !!info, info);
1442 qemu_system_shutdown_request(SHUTDOWN_CAUSE_GUEST_PANIC);
1443 }
1444
1445 if (info) {
1446 if (info->type == GUEST_PANIC_INFORMATION_TYPE_HYPER_V) {
1447 qemu_log_mask(LOG_GUEST_ERROR, "\nHV crash parameters: (%#"PRIx64
1448 " %#"PRIx64" %#"PRIx64" %#"PRIx64" %#"PRIx64")\n",
1449 info->u.hyper_v.arg1,
1450 info->u.hyper_v.arg2,
1451 info->u.hyper_v.arg3,
1452 info->u.hyper_v.arg4,
1453 info->u.hyper_v.arg5);
1454 } else if (info->type == GUEST_PANIC_INFORMATION_TYPE_S390) {
1455 qemu_log_mask(LOG_GUEST_ERROR, " on cpu %d: %s\n"
1456 "PSW: 0x%016" PRIx64 " 0x%016" PRIx64"\n",
1457 info->u.s390.core,
1458 S390CrashReason_str(info->u.s390.reason),
1459 info->u.s390.psw_mask,
1460 info->u.s390.psw_addr);
1461 }
1462 qapi_free_GuestPanicInformation(info);
1463 }
1464 }
1465
1466 void qemu_system_guest_crashloaded(GuestPanicInformation *info)
1467 {
1468 qemu_log_mask(LOG_GUEST_ERROR, "Guest crash loaded");
1469
1470 qapi_event_send_guest_crashloaded(GUEST_PANIC_ACTION_RUN,
1471 !!info, info);
1472
1473 if (info) {
1474 qapi_free_GuestPanicInformation(info);
1475 }
1476 }
1477
1478 void qemu_system_reset_request(ShutdownCause reason)
1479 {
1480 if (no_reboot && reason != SHUTDOWN_CAUSE_SUBSYSTEM_RESET) {
1481 shutdown_requested = reason;
1482 } else {
1483 reset_requested = reason;
1484 }
1485 cpu_stop_current();
1486 qemu_notify_event();
1487 }
1488
1489 static void qemu_system_suspend(void)
1490 {
1491 pause_all_vcpus();
1492 notifier_list_notify(&suspend_notifiers, NULL);
1493 runstate_set(RUN_STATE_SUSPENDED);
1494 qapi_event_send_suspend();
1495 }
1496
1497 void qemu_system_suspend_request(void)
1498 {
1499 if (runstate_check(RUN_STATE_SUSPENDED)) {
1500 return;
1501 }
1502 suspend_requested = 1;
1503 cpu_stop_current();
1504 qemu_notify_event();
1505 }
1506
1507 void qemu_register_suspend_notifier(Notifier *notifier)
1508 {
1509 notifier_list_add(&suspend_notifiers, notifier);
1510 }
1511
1512 void qemu_system_wakeup_request(WakeupReason reason, Error **errp)
1513 {
1514 trace_system_wakeup_request(reason);
1515
1516 if (!runstate_check(RUN_STATE_SUSPENDED)) {
1517 error_setg(errp,
1518 "Unable to wake up: guest is not in suspended state");
1519 return;
1520 }
1521 if (!(wakeup_reason_mask & (1 << reason))) {
1522 return;
1523 }
1524 runstate_set(RUN_STATE_RUNNING);
1525 wakeup_reason = reason;
1526 qemu_notify_event();
1527 }
1528
1529 void qemu_system_wakeup_enable(WakeupReason reason, bool enabled)
1530 {
1531 if (enabled) {
1532 wakeup_reason_mask |= (1 << reason);
1533 } else {
1534 wakeup_reason_mask &= ~(1 << reason);
1535 }
1536 }
1537
1538 void qemu_register_wakeup_notifier(Notifier *notifier)
1539 {
1540 notifier_list_add(&wakeup_notifiers, notifier);
1541 }
1542
1543 void qemu_register_wakeup_support(void)
1544 {
1545 wakeup_suspend_enabled = true;
1546 }
1547
1548 bool qemu_wakeup_suspend_enabled(void)
1549 {
1550 return wakeup_suspend_enabled;
1551 }
1552
1553 void qemu_system_killed(int signal, pid_t pid)
1554 {
1555 shutdown_signal = signal;
1556 shutdown_pid = pid;
1557 no_shutdown = 0;
1558
1559 /* Cannot call qemu_system_shutdown_request directly because
1560 * we are in a signal handler.
1561 */
1562 shutdown_requested = SHUTDOWN_CAUSE_HOST_SIGNAL;
1563 qemu_notify_event();
1564 }
1565
1566 void qemu_system_shutdown_request(ShutdownCause reason)
1567 {
1568 trace_qemu_system_shutdown_request(reason);
1569 replay_shutdown_request(reason);
1570 shutdown_requested = reason;
1571 qemu_notify_event();
1572 }
1573
1574 static void qemu_system_powerdown(void)
1575 {
1576 qapi_event_send_powerdown();
1577 notifier_list_notify(&powerdown_notifiers, NULL);
1578 }
1579
1580 static void qemu_system_shutdown(ShutdownCause cause)
1581 {
1582 qapi_event_send_shutdown(shutdown_caused_by_guest(cause), cause);
1583 notifier_list_notify(&shutdown_notifiers, &cause);
1584 }
1585
1586 void qemu_system_powerdown_request(void)
1587 {
1588 trace_qemu_system_powerdown_request();
1589 powerdown_requested = 1;
1590 qemu_notify_event();
1591 }
1592
1593 void qemu_register_powerdown_notifier(Notifier *notifier)
1594 {
1595 notifier_list_add(&powerdown_notifiers, notifier);
1596 }
1597
1598 void qemu_register_shutdown_notifier(Notifier *notifier)
1599 {
1600 notifier_list_add(&shutdown_notifiers, notifier);
1601 }
1602
1603 void qemu_system_debug_request(void)
1604 {
1605 debug_requested = 1;
1606 qemu_notify_event();
1607 }
1608
1609 static bool main_loop_should_exit(void)
1610 {
1611 RunState r;
1612 ShutdownCause request;
1613
1614 if (preconfig_exit_requested) {
1615 if (runstate_check(RUN_STATE_PRECONFIG)) {
1616 runstate_set(RUN_STATE_PRELAUNCH);
1617 }
1618 preconfig_exit_requested = false;
1619 return true;
1620 }
1621 if (qemu_debug_requested()) {
1622 vm_stop(RUN_STATE_DEBUG);
1623 }
1624 if (qemu_suspend_requested()) {
1625 qemu_system_suspend();
1626 }
1627 request = qemu_shutdown_requested();
1628 if (request) {
1629 qemu_kill_report();
1630 qemu_system_shutdown(request);
1631 if (no_shutdown) {
1632 vm_stop(RUN_STATE_SHUTDOWN);
1633 } else {
1634 return true;
1635 }
1636 }
1637 request = qemu_reset_requested();
1638 if (request) {
1639 pause_all_vcpus();
1640 qemu_system_reset(request);
1641 resume_all_vcpus();
1642 /*
1643 * runstate can change in pause_all_vcpus()
1644 * as iothread mutex is unlocked
1645 */
1646 if (!runstate_check(RUN_STATE_RUNNING) &&
1647 !runstate_check(RUN_STATE_INMIGRATE) &&
1648 !runstate_check(RUN_STATE_FINISH_MIGRATE)) {
1649 runstate_set(RUN_STATE_PRELAUNCH);
1650 }
1651 }
1652 if (qemu_wakeup_requested()) {
1653 pause_all_vcpus();
1654 qemu_system_wakeup();
1655 notifier_list_notify(&wakeup_notifiers, &wakeup_reason);
1656 wakeup_reason = QEMU_WAKEUP_REASON_NONE;
1657 resume_all_vcpus();
1658 qapi_event_send_wakeup();
1659 }
1660 if (qemu_powerdown_requested()) {
1661 qemu_system_powerdown();
1662 }
1663 if (qemu_vmstop_requested(&r)) {
1664 vm_stop(r);
1665 }
1666 return false;
1667 }
1668
1669 void qemu_main_loop(void)
1670 {
1671 #ifdef CONFIG_PROFILER
1672 int64_t ti;
1673 #endif
1674 while (!main_loop_should_exit()) {
1675 #ifdef CONFIG_PROFILER
1676 ti = profile_getclock();
1677 #endif
1678 main_loop_wait(false);
1679 #ifdef CONFIG_PROFILER
1680 dev_time += profile_getclock() - ti;
1681 #endif
1682 }
1683 }
1684
1685 static void version(void)
1686 {
1687 printf("QEMU emulator version " QEMU_FULL_VERSION "\n"
1688 QEMU_COPYRIGHT "\n");
1689 }
1690
1691 static void help(int exitcode)
1692 {
1693 version();
1694 printf("usage: %s [options] [disk_image]\n\n"
1695 "'disk_image' is a raw hard disk image for IDE hard disk 0\n\n",
1696 error_get_progname());
1697
1698 #define QEMU_OPTIONS_GENERATE_HELP
1699 #include "qemu-options-wrapper.h"
1700
1701 printf("\nDuring emulation, the following keys are useful:\n"
1702 "ctrl-alt-f toggle full screen\n"
1703 "ctrl-alt-n switch to virtual console 'n'\n"
1704 "ctrl-alt toggle mouse and keyboard grab\n"
1705 "\n"
1706 "When using -nographic, press 'ctrl-a h' to get some help.\n"
1707 "\n"
1708 QEMU_HELP_BOTTOM "\n");
1709
1710 exit(exitcode);
1711 }
1712
1713 #define HAS_ARG 0x0001
1714
1715 typedef struct QEMUOption {
1716 const char *name;
1717 int flags;
1718 int index;
1719 uint32_t arch_mask;
1720 } QEMUOption;
1721
1722 static const QEMUOption qemu_options[] = {
1723 { "h", 0, QEMU_OPTION_h, QEMU_ARCH_ALL },
1724 #define QEMU_OPTIONS_GENERATE_OPTIONS
1725 #include "qemu-options-wrapper.h"
1726 { NULL },
1727 };
1728
1729 typedef struct VGAInterfaceInfo {
1730 const char *opt_name; /* option name */
1731 const char *name; /* human-readable name */
1732 /* Class names indicating that support is available.
1733 * If no class is specified, the interface is always available */
1734 const char *class_names[2];
1735 } VGAInterfaceInfo;
1736
1737 static const VGAInterfaceInfo vga_interfaces[VGA_TYPE_MAX] = {
1738 [VGA_NONE] = {
1739 .opt_name = "none",
1740 .name = "no graphic card",
1741 },
1742 [VGA_STD] = {
1743 .opt_name = "std",
1744 .name = "standard VGA",
1745 .class_names = { "VGA", "isa-vga" },
1746 },
1747 [VGA_CIRRUS] = {
1748 .opt_name = "cirrus",
1749 .name = "Cirrus VGA",
1750 .class_names = { "cirrus-vga", "isa-cirrus-vga" },
1751 },
1752 [VGA_VMWARE] = {
1753 .opt_name = "vmware",
1754 .name = "VMWare SVGA",
1755 .class_names = { "vmware-svga" },
1756 },
1757 [VGA_VIRTIO] = {
1758 .opt_name = "virtio",
1759 .name = "Virtio VGA",
1760 .class_names = { "virtio-vga" },
1761 },
1762 [VGA_QXL] = {
1763 .opt_name = "qxl",
1764 .name = "QXL VGA",
1765 .class_names = { "qxl-vga" },
1766 },
1767 [VGA_TCX] = {
1768 .opt_name = "tcx",
1769 .name = "TCX framebuffer",
1770 .class_names = { "SUNW,tcx" },
1771 },
1772 [VGA_CG3] = {
1773 .opt_name = "cg3",
1774 .name = "CG3 framebuffer",
1775 .class_names = { "cgthree" },
1776 },
1777 [VGA_XENFB] = {
1778 .opt_name = "xenfb",
1779 .name = "Xen paravirtualized framebuffer",
1780 },
1781 };
1782
1783 static bool vga_interface_available(VGAInterfaceType t)
1784 {
1785 const VGAInterfaceInfo *ti = &vga_interfaces[t];
1786
1787 assert(t < VGA_TYPE_MAX);
1788 return !ti->class_names[0] ||
1789 module_object_class_by_name(ti->class_names[0]) ||
1790 module_object_class_by_name(ti->class_names[1]);
1791 }
1792
1793 static const char *
1794 get_default_vga_model(const MachineClass *machine_class)
1795 {
1796 if (machine_class->default_display) {
1797 return machine_class->default_display;
1798 } else if (vga_interface_available(VGA_CIRRUS)) {
1799 return "cirrus";
1800 } else if (vga_interface_available(VGA_STD)) {
1801 return "std";
1802 }
1803
1804 return NULL;
1805 }
1806
1807 static void select_vgahw(const MachineClass *machine_class, const char *p)
1808 {
1809 const char *opts;
1810 int t;
1811
1812 if (g_str_equal(p, "help")) {
1813 const char *def = get_default_vga_model(machine_class);
1814
1815 for (t = 0; t < VGA_TYPE_MAX; t++) {
1816 const VGAInterfaceInfo *ti = &vga_interfaces[t];
1817
1818 if (vga_interface_available(t) && ti->opt_name) {
1819 printf("%-20s %s%s\n", ti->opt_name, ti->name ?: "",
1820 g_str_equal(ti->opt_name, def) ? " (default)" : "");
1821 }
1822 }
1823 exit(0);
1824 }
1825
1826 assert(vga_interface_type == VGA_NONE);
1827 for (t = 0; t < VGA_TYPE_MAX; t++) {
1828 const VGAInterfaceInfo *ti = &vga_interfaces[t];
1829 if (ti->opt_name && strstart(p, ti->opt_name, &opts)) {
1830 if (!vga_interface_available(t)) {
1831 error_report("%s not available", ti->name);
1832 exit(1);
1833 }
1834 vga_interface_type = t;
1835 break;
1836 }
1837 }
1838 if (t == VGA_TYPE_MAX) {
1839 invalid_vga:
1840 error_report("unknown vga type: %s", p);
1841 exit(1);
1842 }
1843 while (*opts) {
1844 const char *nextopt;
1845
1846 if (strstart(opts, ",retrace=", &nextopt)) {
1847 opts = nextopt;
1848 if (strstart(opts, "dumb", &nextopt))
1849 vga_retrace_method = VGA_RETRACE_DUMB;
1850 else if (strstart(opts, "precise", &nextopt))
1851 vga_retrace_method = VGA_RETRACE_PRECISE;
1852 else goto invalid_vga;
1853 } else goto invalid_vga;
1854 opts = nextopt;
1855 }
1856 }
1857
1858 static void parse_display_qapi(const char *optarg)
1859 {
1860 DisplayOptions *opts;
1861 Visitor *v;
1862
1863 v = qobject_input_visitor_new_str(optarg, "type", &error_fatal);
1864
1865 visit_type_DisplayOptions(v, NULL, &opts, &error_fatal);
1866 QAPI_CLONE_MEMBERS(DisplayOptions, &dpy, opts);
1867
1868 qapi_free_DisplayOptions(opts);
1869 visit_free(v);
1870 }
1871
1872 DisplayOptions *qmp_query_display_options(Error **errp)
1873 {
1874 return QAPI_CLONE(DisplayOptions, &dpy);
1875 }
1876
1877 static void parse_display(const char *p)
1878 {
1879 const char *opts;
1880
1881 if (is_help_option(p)) {
1882 qemu_display_help();
1883 exit(0);
1884 }
1885
1886 if (strstart(p, "sdl", &opts)) {
1887 /*
1888 * sdl DisplayType needs hand-crafted parser instead of
1889 * parse_display_qapi() due to some options not in
1890 * DisplayOptions, specifically:
1891 * - frame
1892 * Already deprecated.
1893 * - ctrl_grab + alt_grab
1894 * Not clear yet what happens to them long-term. Should
1895 * replaced by something better or deprecated and dropped.
1896 */
1897 dpy.type = DISPLAY_TYPE_SDL;
1898 while (*opts) {
1899 const char *nextopt;
1900
1901 if (strstart(opts, ",alt_grab=", &nextopt)) {
1902 opts = nextopt;
1903 if (strstart(opts, "on", &nextopt)) {
1904 alt_grab = 1;
1905 } else if (strstart(opts, "off", &nextopt)) {
1906 alt_grab = 0;
1907 } else {
1908 goto invalid_sdl_args;
1909 }
1910 } else if (strstart(opts, ",ctrl_grab=", &nextopt)) {
1911 opts = nextopt;
1912 if (strstart(opts, "on", &nextopt)) {
1913 ctrl_grab = 1;
1914 } else if (strstart(opts, "off", &nextopt)) {
1915 ctrl_grab = 0;
1916 } else {
1917 goto invalid_sdl_args;
1918 }
1919 } else if (strstart(opts, ",window_close=", &nextopt)) {
1920 opts = nextopt;
1921 dpy.has_window_close = true;
1922 if (strstart(opts, "on", &nextopt)) {
1923 dpy.window_close = true;
1924 } else if (strstart(opts, "off", &nextopt)) {
1925 dpy.window_close = false;
1926 } else {
1927 goto invalid_sdl_args;
1928 }
1929 } else if (strstart(opts, ",show-cursor=", &nextopt)) {
1930 opts = nextopt;
1931 dpy.has_show_cursor = true;
1932 if (strstart(opts, "on", &nextopt)) {
1933 dpy.show_cursor = true;
1934 } else if (strstart(opts, "off", &nextopt)) {
1935 dpy.show_cursor = false;
1936 } else {
1937 goto invalid_sdl_args;
1938 }
1939 } else if (strstart(opts, ",gl=", &nextopt)) {
1940 opts = nextopt;
1941 dpy.has_gl = true;
1942 if (strstart(opts, "on", &nextopt)) {
1943 dpy.gl = DISPLAYGL_MODE_ON;
1944 } else if (strstart(opts, "core", &nextopt)) {
1945 dpy.gl = DISPLAYGL_MODE_CORE;
1946 } else if (strstart(opts, "es", &nextopt)) {
1947 dpy.gl = DISPLAYGL_MODE_ES;
1948 } else if (strstart(opts, "off", &nextopt)) {
1949 dpy.gl = DISPLAYGL_MODE_OFF;
1950 } else {
1951 goto invalid_sdl_args;
1952 }
1953 } else {
1954 invalid_sdl_args:
1955 error_report("invalid SDL option string");
1956 exit(1);
1957 }
1958 opts = nextopt;
1959 }
1960 } else if (strstart(p, "vnc", &opts)) {
1961 /*
1962 * vnc isn't a (local) DisplayType but a protocol for remote
1963 * display access.
1964 */
1965 if (*opts == '=') {
1966 vnc_parse(opts + 1, &error_fatal);
1967 } else {
1968 error_report("VNC requires a display argument vnc=<display>");
1969 exit(1);
1970 }
1971 } else {
1972 parse_display_qapi(p);
1973 }
1974 }
1975
1976 char *qemu_find_file(int type, const char *name)
1977 {
1978 int i;
1979 const char *subdir;
1980 char *buf;
1981
1982 /* Try the name as a straight path first */
1983 if (access(name, R_OK) == 0) {
1984 trace_load_file(name, name);
1985 return g_strdup(name);
1986 }
1987
1988 switch (type) {
1989 case QEMU_FILE_TYPE_BIOS:
1990 subdir = "";
1991 break;
1992 case QEMU_FILE_TYPE_KEYMAP:
1993 subdir = "keymaps/";
1994 break;
1995 default:
1996 abort();
1997 }
1998
1999 for (i = 0; i < data_dir_idx; i++) {
2000 buf = g_strdup_printf("%s/%s%s", data_dir[i], subdir, name);
2001 if (access(buf, R_OK) == 0) {
2002 trace_load_file(name, buf);
2003 return buf;
2004 }
2005 g_free(buf);
2006 }
2007 return NULL;
2008 }
2009
2010 void qemu_add_data_dir(char *path)
2011 {
2012 int i;
2013
2014 if (path == NULL) {
2015 return;
2016 }
2017 if (data_dir_idx == ARRAY_SIZE(data_dir)) {
2018 return;
2019 }
2020 for (i = 0; i < data_dir_idx; i++) {
2021 if (strcmp(data_dir[i], path) == 0) {
2022 g_free(path); /* duplicate */
2023 return;
2024 }
2025 }
2026 data_dir[data_dir_idx++] = path;
2027 }
2028
2029 static inline bool nonempty_str(const char *str)
2030 {
2031 return str && *str;
2032 }
2033
2034 static int parse_fw_cfg(void *opaque, QemuOpts *opts, Error **errp)
2035 {
2036 gchar *buf;
2037 size_t size;
2038 const char *name, *file, *str, *gen_id;
2039 FWCfgState *fw_cfg = (FWCfgState *) opaque;
2040
2041 if (fw_cfg == NULL) {
2042 error_setg(errp, "fw_cfg device not available");
2043 return -1;
2044 }
2045 name = qemu_opt_get(opts, "name");
2046 file = qemu_opt_get(opts, "file");
2047 str = qemu_opt_get(opts, "string");
2048 gen_id = qemu_opt_get(opts, "gen_id");
2049
2050 /* we need the name, and exactly one of: file, content string, gen_id */
2051 if (!nonempty_str(name) ||
2052 nonempty_str(file) + nonempty_str(str) + nonempty_str(gen_id) != 1) {
2053 error_setg(errp, "name, plus exactly one of file,"
2054 " string and gen_id, are needed");
2055 return -1;
2056 }
2057 if (strlen(name) > FW_CFG_MAX_FILE_PATH - 1) {
2058 error_setg(errp, "name too long (max. %d char)",
2059 FW_CFG_MAX_FILE_PATH - 1);
2060 return -1;
2061 }
2062 if (nonempty_str(gen_id)) {
2063 /*
2064 * In this particular case where the content is populated
2065 * internally, the "etc/" namespace protection is relaxed,
2066 * so do not emit a warning.
2067 */
2068 } else if (strncmp(name, "opt/", 4) != 0) {
2069 warn_report("externally provided fw_cfg item names "
2070 "should be prefixed with \"opt/\"");
2071 }
2072 if (nonempty_str(str)) {
2073 size = strlen(str); /* NUL terminator NOT included in fw_cfg blob */
2074 buf = g_memdup(str, size);
2075 } else if (nonempty_str(gen_id)) {
2076 if (!fw_cfg_add_from_generator(fw_cfg, name, gen_id, errp)) {
2077 return -1;
2078 }
2079 return 0;
2080 } else {
2081 GError *err = NULL;
2082 if (!g_file_get_contents(file, &buf, &size, &err)) {
2083 error_setg(errp, "can't load %s: %s", file, err->message);
2084 g_error_free(err);
2085 return -1;
2086 }
2087 }
2088 /* For legacy, keep user files in a specific global order. */
2089 fw_cfg_set_order_override(fw_cfg, FW_CFG_ORDER_OVERRIDE_USER);
2090 fw_cfg_add_file(fw_cfg, name, buf, size);
2091 fw_cfg_reset_order_override(fw_cfg);
2092 return 0;
2093 }
2094
2095 static int device_help_func(void *opaque, QemuOpts *opts, Error **errp)
2096 {
2097 return qdev_device_help(opts);
2098 }
2099
2100 static int device_init_func(void *opaque, QemuOpts *opts, Error **errp)
2101 {
2102 DeviceState *dev;
2103
2104 dev = qdev_device_add(opts, errp);
2105 if (!dev && *errp) {
2106 error_report_err(*errp);
2107 return -1;
2108 } else if (dev) {
2109 object_unref(OBJECT(dev));
2110 }
2111 return 0;
2112 }
2113
2114 static int chardev_init_func(void *opaque, QemuOpts *opts, Error **errp)
2115 {
2116 Error *local_err = NULL;
2117
2118 if (!qemu_chr_new_from_opts(opts, NULL, &local_err)) {
2119 if (local_err) {
2120 error_propagate(errp, local_err);
2121 return -1;
2122 }
2123 exit(0);
2124 }
2125 return 0;
2126 }
2127
2128 #ifdef CONFIG_VIRTFS
2129 static int fsdev_init_func(void *opaque, QemuOpts *opts, Error **errp)
2130 {
2131 return qemu_fsdev_add(opts, errp);
2132 }
2133 #endif
2134
2135 static int mon_init_func(void *opaque, QemuOpts *opts, Error **errp)
2136 {
2137 return monitor_init_opts(opts, errp);
2138 }
2139
2140 static void monitor_parse(const char *optarg, const char *mode, bool pretty)
2141 {
2142 static int monitor_device_index = 0;
2143 QemuOpts *opts;
2144 const char *p;
2145 char label[32];
2146
2147 if (strstart(optarg, "chardev:", &p)) {
2148 snprintf(label, sizeof(label), "%s", p);
2149 } else {
2150 snprintf(label, sizeof(label), "compat_monitor%d",
2151 monitor_device_index);
2152 opts = qemu_chr_parse_compat(label, optarg, true);
2153 if (!opts) {
2154 error_report("parse error: %s", optarg);
2155 exit(1);
2156 }
2157 }
2158
2159 opts = qemu_opts_create(qemu_find_opts("mon"), label, 1, &error_fatal);
2160 qemu_opt_set(opts, "mode", mode, &error_abort);
2161 qemu_opt_set(opts, "chardev", label, &error_abort);
2162 if (!strcmp(mode, "control")) {
2163 qemu_opt_set_bool(opts, "pretty", pretty, &error_abort);
2164 } else {
2165 assert(pretty == false);
2166 }
2167 monitor_device_index++;
2168 }
2169
2170 struct device_config {
2171 enum {
2172 DEV_USB, /* -usbdevice */
2173 DEV_SERIAL, /* -serial */
2174 DEV_PARALLEL, /* -parallel */
2175 DEV_DEBUGCON, /* -debugcon */
2176 DEV_GDB, /* -gdb, -s */
2177 DEV_SCLP, /* s390 sclp */
2178 } type;
2179 const char *cmdline;
2180 Location loc;
2181 QTAILQ_ENTRY(device_config) next;
2182 };
2183
2184 static QTAILQ_HEAD(, device_config) device_configs =
2185 QTAILQ_HEAD_INITIALIZER(device_configs);
2186
2187 static void add_device_config(int type, const char *cmdline)
2188 {
2189 struct device_config *conf;
2190
2191 conf = g_malloc0(sizeof(*conf));
2192 conf->type = type;
2193 conf->cmdline = cmdline;
2194 loc_save(&conf->loc);
2195 QTAILQ_INSERT_TAIL(&device_configs, conf, next);
2196 }
2197
2198 static int foreach_device_config(int type, int (*func)(const char *cmdline))
2199 {
2200 struct device_config *conf;
2201 int rc;
2202
2203 QTAILQ_FOREACH(conf, &device_configs, next) {
2204 if (conf->type != type)
2205 continue;
2206 loc_push_restore(&conf->loc);
2207 rc = func(conf->cmdline);
2208 loc_pop(&conf->loc);
2209 if (rc) {
2210 return rc;
2211 }
2212 }
2213 return 0;
2214 }
2215
2216 static int serial_parse(const char *devname)
2217 {
2218 int index = num_serial_hds;
2219 char label[32];
2220
2221 if (strcmp(devname, "none") == 0)
2222 return 0;
2223 snprintf(label, sizeof(label), "serial%d", index);
2224 serial_hds = g_renew(Chardev *, serial_hds, index + 1);
2225
2226 serial_hds[index] = qemu_chr_new_mux_mon(label, devname, NULL);
2227 if (!serial_hds[index]) {
2228 error_report("could not connect serial device"
2229 " to character backend '%s'", devname);
2230 return -1;
2231 }
2232 num_serial_hds++;
2233 return 0;
2234 }
2235
2236 Chardev *serial_hd(int i)
2237 {
2238 assert(i >= 0);
2239 if (i < num_serial_hds) {
2240 return serial_hds[i];
2241 }
2242 return NULL;
2243 }
2244
2245 int serial_max_hds(void)
2246 {
2247 return num_serial_hds;
2248 }
2249
2250 static int parallel_parse(const char *devname)
2251 {
2252 static int index = 0;
2253 char label[32];
2254
2255 if (strcmp(devname, "none") == 0)
2256 return 0;
2257 if (index == MAX_PARALLEL_PORTS) {
2258 error_report("too many parallel ports");
2259 exit(1);
2260 }
2261 snprintf(label, sizeof(label), "parallel%d", index);
2262 parallel_hds[index] = qemu_chr_new_mux_mon(label, devname, NULL);
2263 if (!parallel_hds[index]) {
2264 error_report("could not connect parallel device"
2265 " to character backend '%s'", devname);
2266 return -1;
2267 }
2268 index++;
2269 return 0;
2270 }
2271
2272 static int debugcon_parse(const char *devname)
2273 {
2274 QemuOpts *opts;
2275
2276 if (!qemu_chr_new_mux_mon("debugcon", devname, NULL)) {
2277 error_report("invalid character backend '%s'", devname);
2278 exit(1);
2279 }
2280 opts = qemu_opts_create(qemu_find_opts("device"), "debugcon", 1, NULL);
2281 if (!opts) {
2282 error_report("already have a debugcon device");
2283 exit(1);
2284 }
2285 qemu_opt_set(opts, "driver", "isa-debugcon", &error_abort);
2286 qemu_opt_set(opts, "chardev", "debugcon", &error_abort);
2287 return 0;
2288 }
2289
2290 static gint machine_class_cmp(gconstpointer a, gconstpointer b)
2291 {
2292 const MachineClass *mc1 = a, *mc2 = b;
2293 int res;
2294
2295 if (mc1->family == NULL) {
2296 if (mc2->family == NULL) {
2297 /* Compare standalone machine types against each other; they sort
2298 * in increasing order.
2299 */
2300 return strcmp(object_class_get_name(OBJECT_CLASS(mc1)),
2301 object_class_get_name(OBJECT_CLASS(mc2)));
2302 }
2303
2304 /* Standalone machine types sort after families. */
2305 return 1;
2306 }
2307
2308 if (mc2->family == NULL) {
2309 /* Families sort before standalone machine types. */
2310 return -1;
2311 }
2312
2313 /* Families sort between each other alphabetically increasingly. */
2314 res = strcmp(mc1->family, mc2->family);
2315 if (res != 0) {
2316 return res;
2317 }
2318
2319 /* Within the same family, machine types sort in decreasing order. */
2320 return strcmp(object_class_get_name(OBJECT_CLASS(mc2)),
2321 object_class_get_name(OBJECT_CLASS(mc1)));
2322 }
2323
2324 static MachineClass *machine_parse(const char *name, GSList *machines)
2325 {
2326 MachineClass *mc;
2327 GSList *el;
2328
2329 if (is_help_option(name)) {
2330 printf("Supported machines are:\n");
2331 machines = g_slist_sort(machines, machine_class_cmp);
2332 for (el = machines; el; el = el->next) {
2333 MachineClass *mc = el->data;
2334 if (mc->alias) {
2335 printf("%-20s %s (alias of %s)\n", mc->alias, mc->desc, mc->name);
2336 }
2337 printf("%-20s %s%s%s\n", mc->name, mc->desc,
2338 mc->is_default ? " (default)" : "",
2339 mc->deprecation_reason ? " (deprecated)" : "");
2340 }
2341 exit(0);
2342 }
2343
2344 mc = find_machine(name, machines);
2345 if (!mc) {
2346 error_report("unsupported machine type");
2347 error_printf("Use -machine help to list supported machines\n");
2348 exit(1);
2349 }
2350 return mc;
2351 }
2352
2353 void qemu_add_exit_notifier(Notifier *notify)
2354 {
2355 notifier_list_add(&exit_notifiers, notify);
2356 }
2357
2358 void qemu_remove_exit_notifier(Notifier *notify)
2359 {
2360 notifier_remove(notify);
2361 }
2362
2363 static void qemu_run_exit_notifiers(void)
2364 {
2365 notifier_list_notify(&exit_notifiers, NULL);
2366 }
2367
2368 static const char *pid_file;
2369 static Notifier qemu_unlink_pidfile_notifier;
2370
2371 static void qemu_unlink_pidfile(Notifier *n, void *data)
2372 {
2373 if (pid_file) {
2374 unlink(pid_file);
2375 }
2376 }
2377
2378 bool machine_init_done;
2379
2380 void qemu_add_machine_init_done_notifier(Notifier *notify)
2381 {
2382 notifier_list_add(&machine_init_done_notifiers, notify);
2383 if (machine_init_done) {
2384 notify->notify(notify, NULL);
2385 }
2386 }
2387
2388 void qemu_remove_machine_init_done_notifier(Notifier *notify)
2389 {
2390 notifier_remove(notify);
2391 }
2392
2393 static void qemu_run_machine_init_done_notifiers(void)
2394 {
2395 machine_init_done = true;
2396 notifier_list_notify(&machine_init_done_notifiers, NULL);
2397 }
2398
2399 static const QEMUOption *lookup_opt(int argc, char **argv,
2400 const char **poptarg, int *poptind)
2401 {
2402 const QEMUOption *popt;
2403 int optind = *poptind;
2404 char *r = argv[optind];
2405 const char *optarg;
2406
2407 loc_set_cmdline(argv, optind, 1);
2408 optind++;
2409 /* Treat --foo the same as -foo. */
2410 if (r[1] == '-')
2411 r++;
2412 popt = qemu_options;
2413 for(;;) {
2414 if (!popt->name) {
2415 error_report("invalid option");
2416 exit(1);
2417 }
2418 if (!strcmp(popt->name, r + 1))
2419 break;
2420 popt++;
2421 }
2422 if (popt->flags & HAS_ARG) {
2423 if (optind >= argc) {
2424 error_report("requires an argument");
2425 exit(1);
2426 }
2427 optarg = argv[optind++];
2428 loc_set_cmdline(argv, optind - 2, 2);
2429 } else {
2430 optarg = NULL;
2431 }
2432
2433 *poptarg = optarg;
2434 *poptind = optind;
2435
2436 return popt;
2437 }
2438
2439 static MachineClass *select_machine(void)
2440 {
2441 GSList *machines = object_class_get_list(TYPE_MACHINE, false);
2442 MachineClass *machine_class = find_default_machine(machines);
2443 const char *optarg;
2444 QemuOpts *opts;
2445 Location loc;
2446
2447 loc_push_none(&loc);
2448
2449 opts = qemu_get_machine_opts();
2450 qemu_opts_loc_restore(opts);
2451
2452 optarg = qemu_opt_get(opts, "type");
2453 if (optarg) {
2454 machine_class = machine_parse(optarg, machines);
2455 }
2456
2457 if (!machine_class) {
2458 error_report("No machine specified, and there is no default");
2459 error_printf("Use -machine help to list supported machines\n");
2460 exit(1);
2461 }
2462
2463 loc_pop(&loc);
2464 g_slist_free(machines);
2465 return machine_class;
2466 }
2467
2468 static int object_parse_property_opt(Object *obj,
2469 const char *name, const char *value,
2470 const char *skip, Error **errp)
2471 {
2472 if (g_str_equal(name, skip)) {
2473 return 0;
2474 }
2475
2476 if (!object_property_parse(obj, name, value, errp)) {
2477 return -1;
2478 }
2479
2480 return 0;
2481 }
2482
2483 static int machine_set_property(void *opaque,
2484 const char *name, const char *value,
2485 Error **errp)
2486 {
2487 g_autofree char *qom_name = g_strdup(name);
2488 char *p;
2489
2490 for (p = qom_name; *p; p++) {
2491 if (*p == '_') {
2492 *p = '-';
2493 }
2494 }
2495
2496 /* Legacy options do not correspond to MachineState properties. */
2497 if (g_str_equal(qom_name, "accel")) {
2498 return 0;
2499 }
2500 if (g_str_equal(qom_name, "igd-passthru")) {
2501 object_register_sugar_prop(ACCEL_CLASS_NAME("xen"), qom_name, value);
2502 return 0;
2503 }
2504 if (g_str_equal(qom_name, "kvm-shadow-mem") ||
2505 g_str_equal(qom_name, "kernel-irqchip")) {
2506 object_register_sugar_prop(ACCEL_CLASS_NAME("kvm"), qom_name, value);
2507 return 0;
2508 }
2509
2510 return object_parse_property_opt(opaque, name, value, "type", errp);
2511 }
2512
2513 /*
2514 * Initial object creation happens before all other
2515 * QEMU data types are created. The majority of objects
2516 * can be created at this point. The rng-egd object
2517 * cannot be created here, as it depends on the chardev
2518 * already existing.
2519 */
2520 static bool object_create_initial(const char *type, QemuOpts *opts)
2521 {
2522 if (user_creatable_print_help(type, opts)) {
2523 exit(0);
2524 }
2525
2526 /*
2527 * Objects should not be made "delayed" without a reason. If you
2528 * add one, state the reason in a comment!
2529 */
2530
2531 /* Reason: rng-egd property "chardev" */
2532 if (g_str_equal(type, "rng-egd")) {
2533 return false;
2534 }
2535
2536 #if defined(CONFIG_VHOST_USER) && defined(CONFIG_LINUX)
2537 /* Reason: cryptodev-vhost-user property "chardev" */
2538 if (g_str_equal(type, "cryptodev-vhost-user")) {
2539 return false;
2540 }
2541 #endif
2542
2543 /* Reason: vhost-user-blk-server property "node-name" */
2544 if (g_str_equal(type, "vhost-user-blk-server")) {
2545 return false;
2546 }
2547 /*
2548 * Reason: filter-* property "netdev" etc.
2549 */
2550 if (g_str_equal(type, "filter-buffer") ||
2551 g_str_equal(type, "filter-dump") ||
2552 g_str_equal(type, "filter-mirror") ||
2553 g_str_equal(type, "filter-redirector") ||
2554 g_str_equal(type, "colo-compare") ||
2555 g_str_equal(type, "filter-rewriter") ||
2556 g_str_equal(type, "filter-replay")) {
2557 return false;
2558 }
2559
2560 /* Memory allocation by backends needs to be done
2561 * after configure_accelerator() (due to the tcg_enabled()
2562 * checks at memory_region_init_*()).
2563 *
2564 * Also, allocation of large amounts of memory may delay
2565 * chardev initialization for too long, and trigger timeouts
2566 * on software that waits for a monitor socket to be created
2567 * (e.g. libvirt).
2568 */
2569 if (g_str_has_prefix(type, "memory-backend-")) {
2570 return false;
2571 }
2572
2573 return true;
2574 }
2575
2576
2577 /*
2578 * The remainder of object creation happens after the
2579 * creation of chardev, fsdev, net clients and device data types.
2580 */
2581 static bool object_create_delayed(const char *type, QemuOpts *opts)
2582 {
2583 return !object_create_initial(type, opts);
2584 }
2585
2586
2587 static bool set_memory_options(uint64_t *ram_slots, ram_addr_t *maxram_size,
2588 MachineClass *mc)
2589 {
2590 uint64_t sz;
2591 const char *mem_str;
2592 const ram_addr_t default_ram_size = mc->default_ram_size;
2593 QemuOpts *opts = qemu_find_opts_singleton("memory");
2594 Location loc;
2595
2596 loc_push_none(&loc);
2597 qemu_opts_loc_restore(opts);
2598
2599 sz = 0;
2600 mem_str = qemu_opt_get(opts, "size");
2601 if (mem_str) {
2602 if (!*mem_str) {
2603 error_report("missing 'size' option value");
2604 exit(EXIT_FAILURE);
2605 }
2606
2607 sz = qemu_opt_get_size(opts, "size", ram_size);
2608
2609 /* Fix up legacy suffix-less format */
2610 if (g_ascii_isdigit(mem_str[strlen(mem_str) - 1])) {
2611 uint64_t overflow_check = sz;
2612
2613 sz *= MiB;
2614 if (sz / MiB != overflow_check) {
2615 error_report("too large 'size' option value");
2616 exit(EXIT_FAILURE);
2617 }
2618 }
2619 }
2620
2621 /* backward compatibility behaviour for case "-m 0" */
2622 if (sz == 0) {
2623 sz = default_ram_size;
2624 }
2625
2626 sz = QEMU_ALIGN_UP(sz, 8192);
2627 if (mc->fixup_ram_size) {
2628 sz = mc->fixup_ram_size(sz);
2629 }
2630 ram_size = sz;
2631 if (ram_size != sz) {
2632 error_report("ram size too large");
2633 exit(EXIT_FAILURE);
2634 }
2635
2636 /* store value for the future use */
2637 qemu_opt_set_number(opts, "size", ram_size, &error_abort);
2638 *maxram_size = ram_size;
2639
2640 if (qemu_opt_get(opts, "maxmem")) {
2641 uint64_t slots;
2642
2643 sz = qemu_opt_get_size(opts, "maxmem", 0);
2644 slots = qemu_opt_get_number(opts, "slots", 0);
2645 if (sz < ram_size) {
2646 error_report("invalid value of -m option maxmem: "
2647 "maximum memory size (0x%" PRIx64 ") must be at least "
2648 "the initial memory size (0x" RAM_ADDR_FMT ")",
2649 sz, ram_size);
2650 exit(EXIT_FAILURE);
2651 } else if (slots && sz == ram_size) {
2652 error_report("invalid value of -m option maxmem: "
2653 "memory slots were specified but maximum memory size "
2654 "(0x%" PRIx64 ") is equal to the initial memory size "
2655 "(0x" RAM_ADDR_FMT ")", sz, ram_size);
2656 exit(EXIT_FAILURE);
2657 }
2658
2659 *maxram_size = sz;
2660 *ram_slots = slots;
2661 } else if (qemu_opt_get(opts, "slots")) {
2662 error_report("invalid -m option value: missing 'maxmem' option");
2663 exit(EXIT_FAILURE);
2664 }
2665
2666 loc_pop(&loc);
2667 return !!mem_str;
2668 }
2669
2670 static int global_init_func(void *opaque, QemuOpts *opts, Error **errp)
2671 {
2672 GlobalProperty *g;
2673
2674 g = g_malloc0(sizeof(*g));
2675 g->driver = qemu_opt_get(opts, "driver");
2676 g->property = qemu_opt_get(opts, "property");
2677 g->value = qemu_opt_get(opts, "value");
2678 qdev_prop_register_global(g);
2679 return 0;
2680 }
2681
2682 static int qemu_read_default_config_file(void)
2683 {
2684 int ret;
2685 g_autofree char *file = get_relocated_path(CONFIG_QEMU_CONFDIR "/qemu.conf");
2686
2687 ret = qemu_read_config_file(file);
2688 if (ret < 0 && ret != -ENOENT) {
2689 return ret;
2690 }
2691
2692 return 0;
2693 }
2694
2695 static void user_register_global_props(void)
2696 {
2697 qemu_opts_foreach(qemu_find_opts("global"),
2698 global_init_func, NULL, NULL);
2699 }
2700
2701 static int do_configure_icount(void *opaque, QemuOpts *opts, Error **errp)
2702 {
2703 icount_configure(opts, errp);
2704 return 0;
2705 }
2706
2707 static int accelerator_set_property(void *opaque,
2708 const char *name, const char *value,
2709 Error **errp)
2710 {
2711 return object_parse_property_opt(opaque, name, value, "accel", errp);
2712 }
2713
2714 static int do_configure_accelerator(void *opaque, QemuOpts *opts, Error **errp)
2715 {
2716 bool *p_init_failed = opaque;
2717 const char *acc = qemu_opt_get(opts, "accel");
2718 AccelClass *ac = accel_find(acc);
2719 AccelState *accel;
2720 int ret;
2721 bool qtest_with_kvm;
2722
2723 qtest_with_kvm = g_str_equal(acc, "kvm") && qtest_chrdev != NULL;
2724
2725 if (!ac) {
2726 *p_init_failed = true;
2727 if (!qtest_with_kvm) {
2728 error_report("invalid accelerator %s", acc);
2729 }
2730 return 0;
2731 }
2732 accel = ACCEL(object_new_with_class(OBJECT_CLASS(ac)));
2733 object_apply_compat_props(OBJECT(accel));
2734 qemu_opt_foreach(opts, accelerator_set_property,
2735 accel,
2736 &error_fatal);
2737
2738 ret = accel_init_machine(accel, current_machine);
2739 if (ret < 0) {
2740 *p_init_failed = true;
2741 if (!qtest_with_kvm || ret != -ENOENT) {
2742 error_report("failed to initialize %s: %s", acc, strerror(-ret));
2743 }
2744 return 0;
2745 }
2746
2747 return 1;
2748 }
2749
2750 static void configure_accelerators(const char *progname)
2751 {
2752 const char *accel;
2753 bool init_failed = false;
2754
2755 qemu_opts_foreach(qemu_find_opts("icount"),
2756 do_configure_icount, NULL, &error_fatal);
2757
2758 accel = qemu_opt_get(qemu_get_machine_opts(), "accel");
2759 if (QTAILQ_EMPTY(&qemu_accel_opts.head)) {
2760 char **accel_list, **tmp;
2761
2762 if (accel == NULL) {
2763 /* Select the default accelerator */
2764 bool have_tcg = accel_find("tcg");
2765 bool have_kvm = accel_find("kvm");
2766
2767 if (have_tcg && have_kvm) {
2768 if (g_str_has_suffix(progname, "kvm")) {
2769 /* If the program name ends with "kvm", we prefer KVM */
2770 accel = "kvm:tcg";
2771 } else {
2772 accel = "tcg:kvm";
2773 }
2774 } else if (have_kvm) {
2775 accel = "kvm";
2776 } else if (have_tcg) {
2777 accel = "tcg";
2778 } else {
2779 error_report("No accelerator selected and"
2780 " no default accelerator available");
2781 exit(1);
2782 }
2783 }
2784 accel_list = g_strsplit(accel, ":", 0);
2785
2786 for (tmp = accel_list; *tmp; tmp++) {
2787 /*
2788 * Filter invalid accelerators here, to prevent obscenities
2789 * such as "-machine accel=tcg,,thread=single".
2790 */
2791 if (accel_find(*tmp)) {
2792 qemu_opts_parse_noisily(qemu_find_opts("accel"), *tmp, true);
2793 } else {
2794 init_failed = true;
2795 error_report("invalid accelerator %s", *tmp);
2796 }
2797 }
2798 g_strfreev(accel_list);
2799 } else {
2800 if (accel != NULL) {
2801 error_report("The -accel and \"-machine accel=\" options are incompatible");
2802 exit(1);
2803 }
2804 }
2805
2806 if (!qemu_opts_foreach(qemu_find_opts("accel"),
2807 do_configure_accelerator, &init_failed, &error_fatal)) {
2808 if (!init_failed) {
2809 error_report("no accelerator found");
2810 }
2811 exit(1);
2812 }
2813
2814 if (init_failed && !qtest_chrdev) {
2815 AccelClass *ac = ACCEL_GET_CLASS(current_accel());
2816 error_report("falling back to %s", ac->name);
2817 }
2818
2819 if (icount_enabled() && !tcg_enabled()) {
2820 error_report("-icount is not allowed with hardware virtualization");
2821 exit(1);
2822 }
2823 }
2824
2825 static void create_default_memdev(MachineState *ms, const char *path)
2826 {
2827 Object *obj;
2828 MachineClass *mc = MACHINE_GET_CLASS(ms);
2829
2830 obj = object_new(path ? TYPE_MEMORY_BACKEND_FILE : TYPE_MEMORY_BACKEND_RAM);
2831 if (path) {
2832 object_property_set_str(obj, "mem-path", path, &error_fatal);
2833 }
2834 object_property_set_int(obj, "size", ms->ram_size, &error_fatal);
2835 object_property_add_child(object_get_objects_root(), mc->default_ram_id,
2836 obj);
2837 /* Ensure backend's memory region name is equal to mc->default_ram_id */
2838 object_property_set_bool(obj, "x-use-canonical-path-for-ramblock-id",
2839 false, &error_fatal);
2840 user_creatable_complete(USER_CREATABLE(obj), &error_fatal);
2841 object_unref(obj);
2842 object_property_set_str(OBJECT(ms), "memory-backend", mc->default_ram_id,
2843 &error_fatal);
2844 }
2845
2846 /*
2847 * Find a likely location for support files using the location of the binary.
2848 * When running from the build tree this will be "$bindir/pc-bios".
2849 * Otherwise, this is CONFIG_QEMU_DATADIR (possibly relocated).
2850 *
2851 * The caller must use g_free() to free the returned data when it is
2852 * no longer required.
2853 */
2854 static char *find_datadir(void)
2855 {
2856 g_autofree char *dir = NULL;
2857
2858 dir = g_build_filename(qemu_get_exec_dir(), "pc-bios", NULL);
2859 if (g_file_test(dir, G_FILE_TEST_IS_DIR)) {
2860 return g_steal_pointer(&dir);
2861 }
2862
2863 return get_relocated_path(CONFIG_QEMU_DATADIR);
2864 }
2865
2866 void qemu_init(int argc, char **argv, char **envp)
2867 {
2868 int i;
2869 int snapshot, linux_boot;
2870 const char *initrd_filename;
2871 const char *kernel_filename, *kernel_cmdline;
2872 const char *boot_order = NULL;
2873 const char *boot_once = NULL;
2874 DisplayState *ds;
2875 QemuOpts *opts, *machine_opts;
2876 QemuOpts *icount_opts = NULL, *accel_opts = NULL;
2877 QemuOptsList *olist;
2878 int optind;
2879 const char *optarg;
2880 const char *loadvm = NULL;
2881 MachineClass *machine_class;
2882 const char *cpu_option;
2883 const char *vga_model = NULL;
2884 const char *incoming = NULL;
2885 bool userconfig = true;
2886 bool nographic = false;
2887 int display_remote = 0;
2888 const char *log_mask = NULL;
2889 const char *log_file = NULL;
2890 char *trace_file = NULL;
2891 ram_addr_t maxram_size;
2892 uint64_t ram_slots = 0;
2893 FILE *vmstate_dump_file = NULL;
2894 Error *main_loop_err = NULL;
2895 Error *err = NULL;
2896 bool list_data_dirs = false;
2897 char **dirs;
2898 const char *mem_path = NULL;
2899 bool have_custom_ram_size;
2900 BlockdevOptionsQueue bdo_queue = QSIMPLEQ_HEAD_INITIALIZER(bdo_queue);
2901 QemuPluginList plugin_list = QTAILQ_HEAD_INITIALIZER(plugin_list);
2902 int mem_prealloc = 0; /* force preallocation of physical target memory */
2903
2904 os_set_line_buffering();
2905
2906 error_init(argv[0]);
2907 module_call_init(MODULE_INIT_TRACE);
2908
2909 qemu_init_cpu_list();
2910 qemu_init_cpu_loop();
2911
2912 qemu_mutex_lock_iothread();
2913
2914 atexit(qemu_run_exit_notifiers);
2915 qemu_init_exec_dir(argv[0]);
2916
2917 module_call_init(MODULE_INIT_QOM);
2918 module_call_init(MODULE_INIT_MIGRATION);
2919
2920 qemu_add_opts(&qemu_drive_opts);
2921 qemu_add_drive_opts(&qemu_legacy_drive_opts);
2922 qemu_add_drive_opts(&qemu_common_drive_opts);
2923 qemu_add_drive_opts(&qemu_drive_opts);
2924 qemu_add_drive_opts(&bdrv_runtime_opts);
2925 qemu_add_opts(&qemu_chardev_opts);
2926 qemu_add_opts(&qemu_device_opts);
2927 qemu_add_opts(&qemu_netdev_opts);
2928 qemu_add_opts(&qemu_nic_opts);
2929 qemu_add_opts(&qemu_net_opts);
2930 qemu_add_opts(&qemu_rtc_opts);
2931 qemu_add_opts(&qemu_global_opts);
2932 qemu_add_opts(&qemu_mon_opts);
2933 qemu_add_opts(&qemu_trace_opts);
2934 qemu_plugin_add_opts();
2935 qemu_add_opts(&qemu_option_rom_opts);
2936 qemu_add_opts(&qemu_machine_opts);
2937 qemu_add_opts(&qemu_accel_opts);
2938 qemu_add_opts(&qemu_mem_opts);
2939 qemu_add_opts(&qemu_smp_opts);
2940 qemu_add_opts(&qemu_boot_opts);
2941 qemu_add_opts(&qemu_add_fd_opts);
2942 qemu_add_opts(&qemu_object_opts);
2943 qemu_add_opts(&qemu_tpmdev_opts);
2944 qemu_add_opts(&qemu_realtime_opts);
2945 qemu_add_opts(&qemu_overcommit_opts);
2946 qemu_add_opts(&qemu_msg_opts);
2947 qemu_add_opts(&qemu_name_opts);
2948 qemu_add_opts(&qemu_numa_opts);
2949 qemu_add_opts(&qemu_icount_opts);
2950 qemu_add_opts(&qemu_semihosting_config_opts);
2951 qemu_add_opts(&qemu_fw_cfg_opts);
2952 module_call_init(MODULE_INIT_OPTS);
2953
2954 runstate_init();
2955 precopy_infrastructure_init();
2956 postcopy_infrastructure_init();
2957 monitor_init_globals();
2958
2959 if (qcrypto_init(&err) < 0) {
2960 error_reportf_err(err, "cannot initialize crypto: ");
2961 exit(1);
2962 }
2963
2964 QTAILQ_INIT(&vm_change_state_head);
2965 os_setup_early_signal_handling();
2966
2967 cpu_option = NULL;
2968 snapshot = 0;
2969
2970 nb_nics = 0;
2971
2972 bdrv_init_with_whitelist();
2973
2974 autostart = 1;
2975
2976 /* first pass of option parsing */
2977 optind = 1;
2978 while (optind < argc) {
2979 if (argv[optind][0] != '-') {
2980 /* disk image */
2981 optind++;
2982 } else {
2983 const QEMUOption *popt;
2984
2985 popt = lookup_opt(argc, argv, &optarg, &optind);
2986 switch (popt->index) {
2987 case QEMU_OPTION_nouserconfig:
2988 userconfig = false;
2989 break;
2990 }
2991 }
2992 }
2993
2994 if (userconfig) {
2995 if (qemu_read_default_config_file() < 0) {
2996 exit(1);
2997 }
2998 }
2999
3000 /* second pass of option parsing */
3001 optind = 1;
3002 for(;;) {
3003 if (optind >= argc)
3004 break;
3005 if (argv[optind][0] != '-') {
3006 loc_set_cmdline(argv, optind, 1);
3007 drive_add(IF_DEFAULT, 0, argv[optind++], HD_OPTS);
3008 } else {
3009 const QEMUOption *popt;
3010
3011 popt = lookup_opt(argc, argv, &optarg, &optind);
3012 if (!(popt->arch_mask & arch_type)) {
3013 error_report("Option not supported for this target");
3014 exit(1);
3015 }
3016 switch(popt->index) {
3017 case QEMU_OPTION_cpu:
3018 /* hw initialization will check this */
3019 cpu_option = optarg;
3020 break;
3021 case QEMU_OPTION_hda:
3022 case QEMU_OPTION_hdb:
3023 case QEMU_OPTION_hdc:
3024 case QEMU_OPTION_hdd:
3025 drive_add(IF_DEFAULT, popt->index - QEMU_OPTION_hda, optarg,
3026 HD_OPTS);
3027 break;
3028 case QEMU_OPTION_blockdev:
3029 {
3030 Visitor *v;
3031 BlockdevOptionsQueueEntry *bdo;
3032
3033 v = qobject_input_visitor_new_str(optarg, "driver",
3034 &error_fatal);
3035
3036 bdo = g_new(BlockdevOptionsQueueEntry, 1);
3037 visit_type_BlockdevOptions(v, NULL, &bdo->bdo,
3038 &error_fatal);
3039 visit_free(v);
3040 loc_save(&bdo->loc);
3041 QSIMPLEQ_INSERT_TAIL(&bdo_queue, bdo, entry);
3042 break;
3043 }
3044 case QEMU_OPTION_drive:
3045 if (drive_def(optarg) == NULL) {
3046 exit(1);
3047 }
3048 break;
3049 case QEMU_OPTION_set:
3050 if (qemu_set_option(optarg) != 0)
3051 exit(1);
3052 break;
3053 case QEMU_OPTION_global:
3054 if (qemu_global_option(optarg) != 0)
3055 exit(1);
3056 break;
3057 case QEMU_OPTION_mtdblock:
3058 drive_add(IF_MTD, -1, optarg, MTD_OPTS);
3059 break;
3060 case QEMU_OPTION_sd:
3061 drive_add(IF_SD, -1, optarg, SD_OPTS);
3062 break;
3063 case QEMU_OPTION_pflash:
3064 drive_add(IF_PFLASH, -1, optarg, PFLASH_OPTS);
3065 break;
3066 case QEMU_OPTION_snapshot:
3067 {
3068 Error *blocker = NULL;
3069 snapshot = 1;
3070 error_setg(&blocker, QERR_REPLAY_NOT_SUPPORTED,
3071 "-snapshot");
3072 replay_add_blocker(blocker);
3073 }
3074 break;
3075 case QEMU_OPTION_numa:
3076 opts = qemu_opts_parse_noisily(qemu_find_opts("numa"),
3077 optarg, true);
3078 if (!opts) {
3079 exit(1);
3080 }
3081 break;
3082 case QEMU_OPTION_display:
3083 parse_display(optarg);
3084 break;
3085 case QEMU_OPTION_nographic:
3086 olist = qemu_find_opts("machine");
3087 qemu_opts_parse_noisily(olist, "graphics=off", false);
3088 nographic = true;
3089 dpy.type = DISPLAY_TYPE_NONE;
3090 break;
3091 case QEMU_OPTION_curses:
3092 #ifdef CONFIG_CURSES
3093 dpy.type = DISPLAY_TYPE_CURSES;
3094 #else
3095 error_report("curses or iconv support is disabled");
3096 exit(1);
3097 #endif
3098 break;
3099 case QEMU_OPTION_portrait:
3100 graphic_rotate = 90;
3101 break;
3102 case QEMU_OPTION_rotate:
3103 graphic_rotate = strtol(optarg, (char **) &optarg, 10);
3104 if (graphic_rotate != 0 && graphic_rotate != 90 &&
3105 graphic_rotate != 180 && graphic_rotate != 270) {
3106 error_report("only 90, 180, 270 deg rotation is available");
3107 exit(1);
3108 }
3109 break;
3110 case QEMU_OPTION_kernel:
3111 qemu_opts_set(qemu_find_opts("machine"), NULL, "kernel", optarg,
3112 &error_abort);
3113 break;
3114 case QEMU_OPTION_initrd:
3115 qemu_opts_set(qemu_find_opts("machine"), NULL, "initrd", optarg,
3116 &error_abort);
3117 break;
3118 case QEMU_OPTION_append:
3119 qemu_opts_set(qemu_find_opts("machine"), NULL, "append", optarg,
3120 &error_abort);
3121 break;
3122 case QEMU_OPTION_dtb:
3123 qemu_opts_set(qemu_find_opts("machine"), NULL, "dtb", optarg,
3124 &error_abort);
3125 break;
3126 case QEMU_OPTION_cdrom:
3127 drive_add(IF_DEFAULT, 2, optarg, CDROM_OPTS);
3128 break;
3129 case QEMU_OPTION_boot:
3130 opts = qemu_opts_parse_noisily(qemu_find_opts("boot-opts"),
3131 optarg, true);
3132 if (!opts) {
3133 exit(1);
3134 }
3135 break;
3136 case QEMU_OPTION_fda:
3137 case QEMU_OPTION_fdb:
3138 drive_add(IF_FLOPPY, popt->index - QEMU_OPTION_fda,
3139 optarg, FD_OPTS);
3140 break;
3141 case QEMU_OPTION_no_fd_bootchk:
3142 fd_bootchk = 0;
3143 break;
3144 case QEMU_OPTION_netdev:
3145 default_net = 0;
3146 if (net_client_parse(qemu_find_opts("netdev"), optarg) == -1) {
3147 exit(1);
3148 }
3149 break;
3150 case QEMU_OPTION_nic:
3151 default_net = 0;
3152 if (net_client_parse(qemu_find_opts("nic"), optarg) == -1) {
3153 exit(1);
3154 }
3155 break;
3156 case QEMU_OPTION_net:
3157 default_net = 0;
3158 if (net_client_parse(qemu_find_opts("net"), optarg) == -1) {
3159 exit(1);
3160 }
3161 break;
3162 #ifdef CONFIG_LIBISCSI
3163 case QEMU_OPTION_iscsi:
3164 opts = qemu_opts_parse_noisily(qemu_find_opts("iscsi"),
3165 optarg, false);
3166 if (!opts) {
3167 exit(1);
3168 }
3169 break;
3170 #endif
3171 case QEMU_OPTION_audio_help:
3172 audio_legacy_help();
3173 exit (0);
3174 break;
3175 case QEMU_OPTION_audiodev:
3176 audio_parse_option(optarg);
3177 break;
3178 case QEMU_OPTION_soundhw:
3179 select_soundhw (optarg);
3180 break;
3181 case QEMU_OPTION_h:
3182 help(0);
3183 break;
3184 case QEMU_OPTION_version:
3185 version();
3186 exit(0);
3187 break;
3188 case QEMU_OPTION_m:
3189 opts = qemu_opts_parse_noisily(qemu_find_opts("memory"),
3190 optarg, true);
3191 if (!opts) {
3192 exit(EXIT_FAILURE);
3193 }
3194 break;
3195 #ifdef CONFIG_TPM
3196 case QEMU_OPTION_tpmdev:
3197 if (tpm_config_parse(qemu_find_opts("tpmdev"), optarg) < 0) {
3198 exit(1);
3199 }
3200 break;
3201 #endif
3202 case QEMU_OPTION_mempath:
3203 mem_path = optarg;
3204 break;
3205 case QEMU_OPTION_mem_prealloc:
3206 mem_prealloc = 1;
3207 break;
3208 case QEMU_OPTION_d:
3209 log_mask = optarg;
3210 break;
3211 case QEMU_OPTION_D:
3212 log_file = optarg;
3213 break;
3214 case QEMU_OPTION_DFILTER:
3215 qemu_set_dfilter_ranges(optarg, &error_fatal);
3216 break;
3217 case QEMU_OPTION_seed:
3218 qemu_guest_random_seed_main(optarg, &error_fatal);
3219 break;
3220 case QEMU_OPTION_s:
3221 add_device_config(DEV_GDB, "tcp::" DEFAULT_GDBSTUB_PORT);
3222 break;
3223 case QEMU_OPTION_gdb:
3224 add_device_config(DEV_GDB, optarg);
3225 break;
3226 case QEMU_OPTION_L:
3227 if (is_help_option(optarg)) {
3228 list_data_dirs = true;
3229 } else {
3230 qemu_add_data_dir(g_strdup(optarg));
3231 }
3232 break;
3233 case QEMU_OPTION_bios:
3234 qemu_opts_set(qemu_find_opts("machine"), NULL, "firmware", optarg,
3235 &error_abort);
3236 break;
3237 case QEMU_OPTION_singlestep:
3238 singlestep = 1;
3239 break;
3240 case QEMU_OPTION_S:
3241 autostart = 0;
3242 break;
3243 case QEMU_OPTION_k:
3244 keyboard_layout = optarg;
3245 break;
3246 case QEMU_OPTION_vga:
3247 vga_model = optarg;
3248 default_vga = 0;
3249 break;
3250 case QEMU_OPTION_g:
3251 {
3252 const char *p;
3253 int w, h, depth;
3254 p = optarg;
3255 w = strtol(p, (char **)&p, 10);
3256 if (w <= 0) {
3257 graphic_error:
3258 error_report("invalid resolution or depth");
3259 exit(1);
3260 }
3261 if (*p != 'x')
3262 goto graphic_error;
3263 p++;
3264 h = strtol(p, (char **)&p, 10);
3265 if (h <= 0)
3266 goto graphic_error;
3267 if (*p == 'x') {
3268 p++;
3269 depth = strtol(p, (char **)&p, 10);
3270 if (depth != 1 && depth != 2 && depth != 4 &&
3271 depth != 8 && depth != 15 && depth != 16 &&
3272 depth != 24 && depth != 32)
3273 goto graphic_error;
3274 } else if (*p == '\0') {
3275 depth = graphic_depth;
3276 } else {
3277 goto graphic_error;
3278 }
3279
3280 graphic_width = w;
3281 graphic_height = h;
3282 graphic_depth = depth;
3283 }
3284 break;
3285 case QEMU_OPTION_echr:
3286 {
3287 char *r;
3288 term_escape_char = strtol(optarg, &r, 0);
3289 if (r == optarg)
3290 printf("Bad argument to echr\n");
3291 break;
3292 }
3293 case QEMU_OPTION_monitor:
3294 default_monitor = 0;
3295 if (strncmp(optarg, "none", 4)) {
3296 monitor_parse(optarg, "readline", false);
3297 }
3298 break;
3299 case QEMU_OPTION_qmp:
3300 monitor_parse(optarg, "control", false);
3301 default_monitor = 0;
3302 break;
3303 case QEMU_OPTION_qmp_pretty:
3304 monitor_parse(optarg, "control", true);
3305 default_monitor = 0;
3306 break;
3307 case QEMU_OPTION_mon:
3308 opts = qemu_opts_parse_noisily(qemu_find_opts("mon"), optarg,
3309 true);
3310 if (!opts) {
3311 exit(1);
3312 }
3313 default_monitor = 0;
3314 break;
3315 case QEMU_OPTION_chardev:
3316 opts = qemu_opts_parse_noisily(qemu_find_opts("chardev"),
3317 optarg, true);
3318 if (!opts) {
3319 exit(1);
3320 }
3321 break;
3322 case QEMU_OPTION_fsdev:
3323 olist = qemu_find_opts("fsdev");
3324 if (!olist) {
3325 error_report("fsdev support is disabled");
3326 exit(1);
3327 }
3328 opts = qemu_opts_parse_noisily(olist, optarg, true);
3329 if (!opts) {
3330 exit(1);
3331 }
3332 break;
3333 case QEMU_OPTION_virtfs: {
3334 QemuOpts *fsdev;
3335 QemuOpts *device;
3336 const char *writeout, *sock_fd, *socket, *path, *security_model,
3337 *multidevs;
3338
3339 olist = qemu_find_opts("virtfs");
3340 if (!olist) {
3341 error_report("virtfs support is disabled");
3342 exit(1);
3343 }
3344 opts = qemu_opts_parse_noisily(olist, optarg, true);
3345 if (!opts) {
3346 exit(1);
3347 }
3348
3349 if (qemu_opt_get(opts, "fsdriver") == NULL ||
3350 qemu_opt_get(opts, "mount_tag") == NULL) {
3351 error_report("Usage: -virtfs fsdriver,mount_tag=tag");
3352 exit(1);
3353 }
3354 fsdev = qemu_opts_create(qemu_find_opts("fsdev"),
3355 qemu_opts_id(opts) ?:
3356 qemu_opt_get(opts, "mount_tag"),
3357 1, NULL);
3358 if (!fsdev) {
3359 error_report("duplicate or invalid fsdev id: %s",
3360 qemu_opt_get(opts, "mount_tag"));
3361 exit(1);
3362 }
3363
3364 writeout = qemu_opt_get(opts, "writeout");
3365 if (writeout) {
3366 #ifdef CONFIG_SYNC_FILE_RANGE
3367 qemu_opt_set(fsdev, "writeout", writeout, &error_abort);
3368 #else
3369 error_report("writeout=immediate not supported "
3370 "on this platform");
3371 exit(1);
3372 #endif
3373 }
3374 qemu_opt_set(fsdev, "fsdriver",
3375 qemu_opt_get(opts, "fsdriver"), &error_abort);
3376 path = qemu_opt_get(opts, "path");
3377 if (path) {
3378 qemu_opt_set(fsdev, "path", path, &error_abort);
3379 }
3380 security_model = qemu_opt_get(opts, "security_model");
3381 if (security_model) {
3382 qemu_opt_set(fsdev, "security_model", security_model,
3383 &error_abort);
3384 }
3385 socket = qemu_opt_get(opts, "socket");
3386 if (socket) {
3387 qemu_opt_set(fsdev, "socket", socket, &error_abort);
3388 }
3389 sock_fd = qemu_opt_get(opts, "sock_fd");
3390 if (sock_fd) {
3391 qemu_opt_set(fsdev, "sock_fd", sock_fd, &error_abort);
3392 }
3393
3394 qemu_opt_set_bool(fsdev, "readonly",
3395 qemu_opt_get_bool(opts, "readonly", 0),
3396 &error_abort);
3397 multidevs = qemu_opt_get(opts, "multidevs");
3398 if (multidevs) {
3399 qemu_opt_set(fsdev, "multidevs", multidevs, &error_abort);
3400 }
3401 device = qemu_opts_create(qemu_find_opts("device"), NULL, 0,
3402 &error_abort);
3403 qemu_opt_set(device, "driver", "virtio-9p-pci", &error_abort);
3404 qemu_opt_set(device, "fsdev",
3405 qemu_opts_id(fsdev), &error_abort);
3406 qemu_opt_set(device, "mount_tag",
3407 qemu_opt_get(opts, "mount_tag"), &error_abort);
3408 break;
3409 }
3410 case QEMU_OPTION_serial:
3411 add_device_config(DEV_SERIAL, optarg);
3412 default_serial = 0;
3413 if (strncmp(optarg, "mon:", 4) == 0) {
3414 default_monitor = 0;
3415 }
3416 break;
3417 case QEMU_OPTION_watchdog:
3418 if (watchdog) {
3419 error_report("only one watchdog option may be given");
3420 exit(1);
3421 }
3422 watchdog = optarg;