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util/coroutine: Cleanup start_switch_fiber_ for TSAN.
[qemu.git] / softmmu / vl.c
blob96417a7c3a7809ca66974f7786471000c98dcb61
1 /*
2 * QEMU System Emulator
3 *
4 * Copyright (c) 2003-2008 Fabrice Bellard
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22 * THE SOFTWARE.
23 */
24
25 #include "qemu/osdep.h"
26 #include "qemu-common.h"
27 #include "qemu/units.h"
28 #include "hw/boards.h"
29 #include "hw/qdev-properties.h"
30 #include "qapi/error.h"
31 #include "qemu-version.h"
32 #include "qemu/cutils.h"
33 #include "qemu/help_option.h"
34 #include "qemu/uuid.h"
35 #include "sysemu/reset.h"
36 #include "sysemu/runstate.h"
37 #include "sysemu/seccomp.h"
38 #include "sysemu/tcg.h"
39 #include "sysemu/xen.h"
40
41 #include "qemu/error-report.h"
42 #include "qemu/sockets.h"
43 #include "sysemu/accel.h"
44 #include "hw/usb.h"
45 #include "hw/isa/isa.h"
46 #include "hw/scsi/scsi.h"
47 #include "hw/display/vga.h"
48 #include "sysemu/watchdog.h"
49 #include "hw/firmware/smbios.h"
50 #include "hw/acpi/acpi.h"
51 #include "hw/xen/xen.h"
52 #include "hw/loader.h"
53 #include "monitor/qdev.h"
54 #include "net/net.h"
55 #include "net/slirp.h"
56 #include "monitor/monitor.h"
57 #include "ui/console.h"
58 #include "ui/input.h"
59 #include "sysemu/sysemu.h"
60 #include "sysemu/numa.h"
61 #include "sysemu/hostmem.h"
62 #include "exec/gdbstub.h"
63 #include "qemu/timer.h"
64 #include "chardev/char.h"
65 #include "qemu/bitmap.h"
66 #include "qemu/log.h"
67 #include "sysemu/blockdev.h"
68 #include "hw/block/block.h"
69 #include "migration/misc.h"
70 #include "migration/snapshot.h"
71 #include "migration/global_state.h"
72 #include "sysemu/tpm.h"
73 #include "sysemu/dma.h"
74 #include "hw/audio/soundhw.h"
75 #include "audio/audio.h"
76 #include "sysemu/cpus.h"
77 #include "migration/colo.h"
78 #include "migration/postcopy-ram.h"
79 #include "sysemu/kvm.h"
80 #include "sysemu/hax.h"
81 #include "qapi/qobject-input-visitor.h"
82 #include "qemu/option.h"
83 #include "qemu/config-file.h"
84 #include "qemu-options.h"
85 #include "qemu/main-loop.h"
86 #ifdef CONFIG_VIRTFS
87 #include "fsdev/qemu-fsdev.h"
88 #endif
89 #include "sysemu/qtest.h"
90
91 #include "disas/disas.h"
92
93 #include "trace-root.h"
94 #include "trace/control.h"
95 #include "qemu/plugin.h"
96 #include "qemu/queue.h"
97 #include "sysemu/arch_init.h"
98
99 #include "ui/qemu-spice.h"
100 #include "qapi/string-input-visitor.h"
101 #include "qapi/opts-visitor.h"
102 #include "qapi/clone-visitor.h"
103 #include "qom/object_interfaces.h"
104 #include "hw/semihosting/semihost.h"
105 #include "crypto/init.h"
106 #include "sysemu/replay.h"
107 #include "qapi/qapi-events-run-state.h"
108 #include "qapi/qapi-visit-block-core.h"
109 #include "qapi/qapi-visit-ui.h"
110 #include "qapi/qapi-commands-block-core.h"
111 #include "qapi/qapi-commands-run-state.h"
112 #include "qapi/qapi-commands-ui.h"
113 #include "qapi/qmp/qerror.h"
114 #include "sysemu/iothread.h"
115 #include "qemu/guest-random.h"
116
117 #define MAX_VIRTIO_CONSOLES 1
118
119 static const char *data_dir[16];
120 static int data_dir_idx;
121 const char *bios_name = NULL;
122 enum vga_retrace_method vga_retrace_method = VGA_RETRACE_DUMB;
123 int display_opengl;
124 const char* keyboard_layout = NULL;
125 ram_addr_t ram_size;
126 bool enable_mlock = false;
127 bool enable_cpu_pm = false;
128 int nb_nics;
129 NICInfo nd_table[MAX_NICS];
130 int autostart;
131 static enum {
132 RTC_BASE_UTC,
133 RTC_BASE_LOCALTIME,
134 RTC_BASE_DATETIME,
135 } rtc_base_type = RTC_BASE_UTC;
136 static time_t rtc_ref_start_datetime;
137 static int rtc_realtime_clock_offset; /* used only with QEMU_CLOCK_REALTIME */
138 static int rtc_host_datetime_offset = -1; /* valid & used only with
139 RTC_BASE_DATETIME */
140 QEMUClockType rtc_clock;
141 int vga_interface_type = VGA_NONE;
142 static DisplayOptions dpy;
143 static int num_serial_hds;
144 static Chardev **serial_hds;
145 Chardev *parallel_hds[MAX_PARALLEL_PORTS];
146 int win2k_install_hack = 0;
147 int singlestep = 0;
148 int no_hpet = 0;
149 int fd_bootchk = 1;
150 static int no_reboot;
151 int no_shutdown = 0;
152 int graphic_rotate = 0;
153 const char *watchdog;
154 QEMUOptionRom option_rom[MAX_OPTION_ROMS];
155 int nb_option_roms;
156 int old_param = 0;
157 const char *qemu_name;
158 int alt_grab = 0;
159 int ctrl_grab = 0;
160 unsigned int nb_prom_envs = 0;
161 const char *prom_envs[MAX_PROM_ENVS];
162 int boot_menu;
163 bool boot_strict;
164 uint8_t *boot_splash_filedata;
165 int only_migratable; /* turn it off unless user states otherwise */
166 bool wakeup_suspend_enabled;
167
168 int icount_align_option;
169
170 /* The bytes in qemu_uuid are in the order specified by RFC4122, _not_ in the
171 * little-endian "wire format" described in the SMBIOS 2.6 specification.
172 */
173 QemuUUID qemu_uuid;
174 bool qemu_uuid_set;
175
176 static NotifierList exit_notifiers =
177 NOTIFIER_LIST_INITIALIZER(exit_notifiers);
178
179 static NotifierList machine_init_done_notifiers =
180 NOTIFIER_LIST_INITIALIZER(machine_init_done_notifiers);
181
182 uint32_t xen_domid;
183 enum xen_mode xen_mode = XEN_EMULATE;
184 bool xen_domid_restrict;
185
186 static int has_defaults = 1;
187 static int default_serial = 1;
188 static int default_parallel = 1;
189 static int default_monitor = 1;
190 static int default_floppy = 1;
191 static int default_cdrom = 1;
192 static int default_sdcard = 1;
193 static int default_vga = 1;
194 static int default_net = 1;
195
196 static struct {
197 const char *driver;
198 int *flag;
199 } default_list[] = {
200 { .driver = "isa-serial", .flag = &default_serial },
201 { .driver = "isa-parallel", .flag = &default_parallel },
202 { .driver = "isa-fdc", .flag = &default_floppy },
203 { .driver = "floppy", .flag = &default_floppy },
204 { .driver = "ide-cd", .flag = &default_cdrom },
205 { .driver = "ide-hd", .flag = &default_cdrom },
206 { .driver = "ide-drive", .flag = &default_cdrom },
207 { .driver = "scsi-cd", .flag = &default_cdrom },
208 { .driver = "scsi-hd", .flag = &default_cdrom },
209 { .driver = "VGA", .flag = &default_vga },
210 { .driver = "isa-vga", .flag = &default_vga },
211 { .driver = "cirrus-vga", .flag = &default_vga },
212 { .driver = "isa-cirrus-vga", .flag = &default_vga },
213 { .driver = "vmware-svga", .flag = &default_vga },
214 { .driver = "qxl-vga", .flag = &default_vga },
215 { .driver = "virtio-vga", .flag = &default_vga },
216 { .driver = "ati-vga", .flag = &default_vga },
217 { .driver = "vhost-user-vga", .flag = &default_vga },
218 };
219
220 static QemuOptsList qemu_rtc_opts = {
221 .name = "rtc",
222 .head = QTAILQ_HEAD_INITIALIZER(qemu_rtc_opts.head),
223 .merge_lists = true,
224 .desc = {
225 {
226 .name = "base",
227 .type = QEMU_OPT_STRING,
228 },{
229 .name = "clock",
230 .type = QEMU_OPT_STRING,
231 },{
232 .name = "driftfix",
233 .type = QEMU_OPT_STRING,
234 },
235 { /* end of list */ }
236 },
237 };
238
239 static QemuOptsList qemu_option_rom_opts = {
240 .name = "option-rom",
241 .implied_opt_name = "romfile",
242 .head = QTAILQ_HEAD_INITIALIZER(qemu_option_rom_opts.head),
243 .desc = {
244 {
245 .name = "bootindex",
246 .type = QEMU_OPT_NUMBER,
247 }, {
248 .name = "romfile",
249 .type = QEMU_OPT_STRING,
250 },
251 { /* end of list */ }
252 },
253 };
254
255 static QemuOptsList qemu_machine_opts = {
256 .name = "machine",
257 .implied_opt_name = "type",
258 .merge_lists = true,
259 .head = QTAILQ_HEAD_INITIALIZER(qemu_machine_opts.head),
260 .desc = {
261 /*
262 * no elements => accept any
263 * sanity checking will happen later
264 * when setting machine properties
265 */
266 { }
267 },
268 };
269
270 static QemuOptsList qemu_accel_opts = {
271 .name = "accel",
272 .implied_opt_name = "accel",
273 .head = QTAILQ_HEAD_INITIALIZER(qemu_accel_opts.head),
274 .desc = {
275 /*
276 * no elements => accept any
277 * sanity checking will happen later
278 * when setting accelerator properties
279 */
280 { }
281 },
282 };
283
284 static QemuOptsList qemu_boot_opts = {
285 .name = "boot-opts",
286 .implied_opt_name = "order",
287 .merge_lists = true,
288 .head = QTAILQ_HEAD_INITIALIZER(qemu_boot_opts.head),
289 .desc = {
290 {
291 .name = "order",
292 .type = QEMU_OPT_STRING,
293 }, {
294 .name = "once",
295 .type = QEMU_OPT_STRING,
296 }, {
297 .name = "menu",
298 .type = QEMU_OPT_BOOL,
299 }, {
300 .name = "splash",
301 .type = QEMU_OPT_STRING,
302 }, {
303 .name = "splash-time",
304 .type = QEMU_OPT_NUMBER,
305 }, {
306 .name = "reboot-timeout",
307 .type = QEMU_OPT_NUMBER,
308 }, {
309 .name = "strict",
310 .type = QEMU_OPT_BOOL,
311 },
312 { /*End of list */ }
313 },
314 };
315
316 static QemuOptsList qemu_add_fd_opts = {
317 .name = "add-fd",
318 .head = QTAILQ_HEAD_INITIALIZER(qemu_add_fd_opts.head),
319 .desc = {
320 {
321 .name = "fd",
322 .type = QEMU_OPT_NUMBER,
323 .help = "file descriptor of which a duplicate is added to fd set",
324 },{
325 .name = "set",
326 .type = QEMU_OPT_NUMBER,
327 .help = "ID of the fd set to add fd to",
328 },{
329 .name = "opaque",
330 .type = QEMU_OPT_STRING,
331 .help = "free-form string used to describe fd",
332 },
333 { /* end of list */ }
334 },
335 };
336
337 static QemuOptsList qemu_object_opts = {
338 .name = "object",
339 .implied_opt_name = "qom-type",
340 .head = QTAILQ_HEAD_INITIALIZER(qemu_object_opts.head),
341 .desc = {
342 { }
343 },
344 };
345
346 static QemuOptsList qemu_tpmdev_opts = {
347 .name = "tpmdev",
348 .implied_opt_name = "type",
349 .head = QTAILQ_HEAD_INITIALIZER(qemu_tpmdev_opts.head),
350 .desc = {
351 /* options are defined in the TPM backends */
352 { /* end of list */ }
353 },
354 };
355
356 static QemuOptsList qemu_realtime_opts = {
357 .name = "realtime",
358 .head = QTAILQ_HEAD_INITIALIZER(qemu_realtime_opts.head),
359 .desc = {
360 {
361 .name = "mlock",
362 .type = QEMU_OPT_BOOL,
363 },
364 { /* end of list */ }
365 },
366 };
367
368 static QemuOptsList qemu_overcommit_opts = {
369 .name = "overcommit",
370 .head = QTAILQ_HEAD_INITIALIZER(qemu_overcommit_opts.head),
371 .desc = {
372 {
373 .name = "mem-lock",
374 .type = QEMU_OPT_BOOL,
375 },
376 {
377 .name = "cpu-pm",
378 .type = QEMU_OPT_BOOL,
379 },
380 { /* end of list */ }
381 },
382 };
383
384 static QemuOptsList qemu_msg_opts = {
385 .name = "msg",
386 .head = QTAILQ_HEAD_INITIALIZER(qemu_msg_opts.head),
387 .desc = {
388 {
389 .name = "timestamp",
390 .type = QEMU_OPT_BOOL,
391 },
392 { /* end of list */ }
393 },
394 };
395
396 static QemuOptsList qemu_name_opts = {
397 .name = "name",
398 .implied_opt_name = "guest",
399 .merge_lists = true,
400 .head = QTAILQ_HEAD_INITIALIZER(qemu_name_opts.head),
401 .desc = {
402 {
403 .name = "guest",
404 .type = QEMU_OPT_STRING,
405 .help = "Sets the name of the guest.\n"
406 "This name will be displayed in the SDL window caption.\n"
407 "The name will also be used for the VNC server",
408 }, {
409 .name = "process",
410 .type = QEMU_OPT_STRING,
411 .help = "Sets the name of the QEMU process, as shown in top etc",
412 }, {
413 .name = "debug-threads",
414 .type = QEMU_OPT_BOOL,
415 .help = "When enabled, name the individual threads; defaults off.\n"
416 "NOTE: The thread names are for debugging and not a\n"
417 "stable API.",
418 },
419 { /* End of list */ }
420 },
421 };
422
423 static QemuOptsList qemu_mem_opts = {
424 .name = "memory",
425 .implied_opt_name = "size",
426 .head = QTAILQ_HEAD_INITIALIZER(qemu_mem_opts.head),
427 .merge_lists = true,
428 .desc = {
429 {
430 .name = "size",
431 .type = QEMU_OPT_SIZE,
432 },
433 {
434 .name = "slots",
435 .type = QEMU_OPT_NUMBER,
436 },
437 {
438 .name = "maxmem",
439 .type = QEMU_OPT_SIZE,
440 },
441 { /* end of list */ }
442 },
443 };
444
445 static QemuOptsList qemu_icount_opts = {
446 .name = "icount",
447 .implied_opt_name = "shift",
448 .merge_lists = true,
449 .head = QTAILQ_HEAD_INITIALIZER(qemu_icount_opts.head),
450 .desc = {
451 {
452 .name = "shift",
453 .type = QEMU_OPT_STRING,
454 }, {
455 .name = "align",
456 .type = QEMU_OPT_BOOL,
457 }, {
458 .name = "sleep",
459 .type = QEMU_OPT_BOOL,
460 }, {
461 .name = "rr",
462 .type = QEMU_OPT_STRING,
463 }, {
464 .name = "rrfile",
465 .type = QEMU_OPT_STRING,
466 }, {
467 .name = "rrsnapshot",
468 .type = QEMU_OPT_STRING,
469 },
470 { /* end of list */ }
471 },
472 };
473
474 static QemuOptsList qemu_fw_cfg_opts = {
475 .name = "fw_cfg",
476 .implied_opt_name = "name",
477 .head = QTAILQ_HEAD_INITIALIZER(qemu_fw_cfg_opts.head),
478 .desc = {
479 {
480 .name = "name",
481 .type = QEMU_OPT_STRING,
482 .help = "Sets the fw_cfg name of the blob to be inserted",
483 }, {
484 .name = "file",
485 .type = QEMU_OPT_STRING,
486 .help = "Sets the name of the file from which "
487 "the fw_cfg blob will be loaded",
488 }, {
489 .name = "string",
490 .type = QEMU_OPT_STRING,
491 .help = "Sets content of the blob to be inserted from a string",
492 }, {
493 .name = "gen_id",
494 .type = QEMU_OPT_STRING,
495 .help = "Sets id of the object generating the fw_cfg blob "
496 "to be inserted",
497 },
498 { /* end of list */ }
499 },
500 };
501
502 /**
503 * Get machine options
504 *
505 * Returns: machine options (never null).
506 */
507 QemuOpts *qemu_get_machine_opts(void)
508 {
509 return qemu_find_opts_singleton("machine");
510 }
511
512 const char *qemu_get_vm_name(void)
513 {
514 return qemu_name;
515 }
516
517 static void res_free(void)
518 {
519 g_free(boot_splash_filedata);
520 boot_splash_filedata = NULL;
521 }
522
523 static int default_driver_check(void *opaque, QemuOpts *opts, Error **errp)
524 {
525 const char *driver = qemu_opt_get(opts, "driver");
526 int i;
527
528 if (!driver)
529 return 0;
530 for (i = 0; i < ARRAY_SIZE(default_list); i++) {
531 if (strcmp(default_list[i].driver, driver) != 0)
532 continue;
533 *(default_list[i].flag) = 0;
534 }
535 return 0;
536 }
537
538 /***********************************************************/
539 /* QEMU state */
540
541 static RunState current_run_state = RUN_STATE_PRECONFIG;
542
543 /* We use RUN_STATE__MAX but any invalid value will do */
544 static RunState vmstop_requested = RUN_STATE__MAX;
545 static QemuMutex vmstop_lock;
546
547 typedef struct {
548 RunState from;
549 RunState to;
550 } RunStateTransition;
551
552 static const RunStateTransition runstate_transitions_def[] = {
553 /* from -> to */
554 { RUN_STATE_PRECONFIG, RUN_STATE_PRELAUNCH },
555 /* Early switch to inmigrate state to allow -incoming CLI option work
556 * as it used to. TODO: delay actual switching to inmigrate state to
557 * the point after machine is built and remove this hack.
558 */
559 { RUN_STATE_PRECONFIG, RUN_STATE_INMIGRATE },
560
561 { RUN_STATE_DEBUG, RUN_STATE_RUNNING },
562 { RUN_STATE_DEBUG, RUN_STATE_FINISH_MIGRATE },
563 { RUN_STATE_DEBUG, RUN_STATE_PRELAUNCH },
564
565 { RUN_STATE_INMIGRATE, RUN_STATE_INTERNAL_ERROR },
566 { RUN_STATE_INMIGRATE, RUN_STATE_IO_ERROR },
567 { RUN_STATE_INMIGRATE, RUN_STATE_PAUSED },
568 { RUN_STATE_INMIGRATE, RUN_STATE_RUNNING },
569 { RUN_STATE_INMIGRATE, RUN_STATE_SHUTDOWN },
570 { RUN_STATE_INMIGRATE, RUN_STATE_SUSPENDED },
571 { RUN_STATE_INMIGRATE, RUN_STATE_WATCHDOG },
572 { RUN_STATE_INMIGRATE, RUN_STATE_GUEST_PANICKED },
573 { RUN_STATE_INMIGRATE, RUN_STATE_FINISH_MIGRATE },
574 { RUN_STATE_INMIGRATE, RUN_STATE_PRELAUNCH },
575 { RUN_STATE_INMIGRATE, RUN_STATE_POSTMIGRATE },
576 { RUN_STATE_INMIGRATE, RUN_STATE_COLO },
577
578 { RUN_STATE_INTERNAL_ERROR, RUN_STATE_PAUSED },
579 { RUN_STATE_INTERNAL_ERROR, RUN_STATE_FINISH_MIGRATE },
580 { RUN_STATE_INTERNAL_ERROR, RUN_STATE_PRELAUNCH },
581
582 { RUN_STATE_IO_ERROR, RUN_STATE_RUNNING },
583 { RUN_STATE_IO_ERROR, RUN_STATE_FINISH_MIGRATE },
584 { RUN_STATE_IO_ERROR, RUN_STATE_PRELAUNCH },
585
586 { RUN_STATE_PAUSED, RUN_STATE_RUNNING },
587 { RUN_STATE_PAUSED, RUN_STATE_FINISH_MIGRATE },
588 { RUN_STATE_PAUSED, RUN_STATE_POSTMIGRATE },
589 { RUN_STATE_PAUSED, RUN_STATE_PRELAUNCH },
590 { RUN_STATE_PAUSED, RUN_STATE_COLO},
591
592 { RUN_STATE_POSTMIGRATE, RUN_STATE_RUNNING },
593 { RUN_STATE_POSTMIGRATE, RUN_STATE_FINISH_MIGRATE },
594 { RUN_STATE_POSTMIGRATE, RUN_STATE_PRELAUNCH },
595
596 { RUN_STATE_PRELAUNCH, RUN_STATE_RUNNING },
597 { RUN_STATE_PRELAUNCH, RUN_STATE_FINISH_MIGRATE },
598 { RUN_STATE_PRELAUNCH, RUN_STATE_INMIGRATE },
599
600 { RUN_STATE_FINISH_MIGRATE, RUN_STATE_RUNNING },
601 { RUN_STATE_FINISH_MIGRATE, RUN_STATE_PAUSED },
602 { RUN_STATE_FINISH_MIGRATE, RUN_STATE_POSTMIGRATE },
603 { RUN_STATE_FINISH_MIGRATE, RUN_STATE_PRELAUNCH },
604 { RUN_STATE_FINISH_MIGRATE, RUN_STATE_COLO},
605
606 { RUN_STATE_RESTORE_VM, RUN_STATE_RUNNING },
607 { RUN_STATE_RESTORE_VM, RUN_STATE_PRELAUNCH },
608
609 { RUN_STATE_COLO, RUN_STATE_RUNNING },
610
611 { RUN_STATE_RUNNING, RUN_STATE_DEBUG },
612 { RUN_STATE_RUNNING, RUN_STATE_INTERNAL_ERROR },
613 { RUN_STATE_RUNNING, RUN_STATE_IO_ERROR },
614 { RUN_STATE_RUNNING, RUN_STATE_PAUSED },
615 { RUN_STATE_RUNNING, RUN_STATE_FINISH_MIGRATE },
616 { RUN_STATE_RUNNING, RUN_STATE_RESTORE_VM },
617 { RUN_STATE_RUNNING, RUN_STATE_SAVE_VM },
618 { RUN_STATE_RUNNING, RUN_STATE_SHUTDOWN },
619 { RUN_STATE_RUNNING, RUN_STATE_WATCHDOG },
620 { RUN_STATE_RUNNING, RUN_STATE_GUEST_PANICKED },
621 { RUN_STATE_RUNNING, RUN_STATE_COLO},
622
623 { RUN_STATE_SAVE_VM, RUN_STATE_RUNNING },
624
625 { RUN_STATE_SHUTDOWN, RUN_STATE_PAUSED },
626 { RUN_STATE_SHUTDOWN, RUN_STATE_FINISH_MIGRATE },
627 { RUN_STATE_SHUTDOWN, RUN_STATE_PRELAUNCH },
628
629 { RUN_STATE_DEBUG, RUN_STATE_SUSPENDED },
630 { RUN_STATE_RUNNING, RUN_STATE_SUSPENDED },
631 { RUN_STATE_SUSPENDED, RUN_STATE_RUNNING },
632 { RUN_STATE_SUSPENDED, RUN_STATE_FINISH_MIGRATE },
633 { RUN_STATE_SUSPENDED, RUN_STATE_PRELAUNCH },
634 { RUN_STATE_SUSPENDED, RUN_STATE_COLO},
635
636 { RUN_STATE_WATCHDOG, RUN_STATE_RUNNING },
637 { RUN_STATE_WATCHDOG, RUN_STATE_FINISH_MIGRATE },
638 { RUN_STATE_WATCHDOG, RUN_STATE_PRELAUNCH },
639 { RUN_STATE_WATCHDOG, RUN_STATE_COLO},
640
641 { RUN_STATE_GUEST_PANICKED, RUN_STATE_RUNNING },
642 { RUN_STATE_GUEST_PANICKED, RUN_STATE_FINISH_MIGRATE },
643 { RUN_STATE_GUEST_PANICKED, RUN_STATE_PRELAUNCH },
644
645 { RUN_STATE__MAX, RUN_STATE__MAX },
646 };
647
648 static bool runstate_valid_transitions[RUN_STATE__MAX][RUN_STATE__MAX];
649
650 bool runstate_check(RunState state)
651 {
652 return current_run_state == state;
653 }
654
655 bool runstate_store(char *str, size_t size)
656 {
657 const char *state = RunState_str(current_run_state);
658 size_t len = strlen(state) + 1;
659
660 if (len > size) {
661 return false;
662 }
663 memcpy(str, state, len);
664 return true;
665 }
666
667 static void runstate_init(void)
668 {
669 const RunStateTransition *p;
670
671 memset(&runstate_valid_transitions, 0, sizeof(runstate_valid_transitions));
672 for (p = &runstate_transitions_def[0]; p->from != RUN_STATE__MAX; p++) {
673 runstate_valid_transitions[p->from][p->to] = true;
674 }
675
676 qemu_mutex_init(&vmstop_lock);
677 }
678
679 /* This function will abort() on invalid state transitions */
680 void runstate_set(RunState new_state)
681 {
682 assert(new_state < RUN_STATE__MAX);
683
684 trace_runstate_set(current_run_state, RunState_str(current_run_state),
685 new_state, RunState_str(new_state));
686
687 if (current_run_state == new_state) {
688 return;
689 }
690
691 if (!runstate_valid_transitions[current_run_state][new_state]) {
692 error_report("invalid runstate transition: '%s' -> '%s'",
693 RunState_str(current_run_state),
694 RunState_str(new_state));
695 abort();
696 }
697
698 current_run_state = new_state;
699 }
700
701 int runstate_is_running(void)
702 {
703 return runstate_check(RUN_STATE_RUNNING);
704 }
705
706 bool runstate_needs_reset(void)
707 {
708 return runstate_check(RUN_STATE_INTERNAL_ERROR) ||
709 runstate_check(RUN_STATE_SHUTDOWN);
710 }
711
712 StatusInfo *qmp_query_status(Error **errp)
713 {
714 StatusInfo *info = g_malloc0(sizeof(*info));
715
716 info->running = runstate_is_running();
717 info->singlestep = singlestep;
718 info->status = current_run_state;
719
720 return info;
721 }
722
723 bool qemu_vmstop_requested(RunState *r)
724 {
725 qemu_mutex_lock(&vmstop_lock);
726 *r = vmstop_requested;
727 vmstop_requested = RUN_STATE__MAX;
728 qemu_mutex_unlock(&vmstop_lock);
729 return *r < RUN_STATE__MAX;
730 }
731
732 void qemu_system_vmstop_request_prepare(void)
733 {
734 qemu_mutex_lock(&vmstop_lock);
735 }
736
737 void qemu_system_vmstop_request(RunState state)
738 {
739 vmstop_requested = state;
740 qemu_mutex_unlock(&vmstop_lock);
741 qemu_notify_event();
742 }
743
744 /***********************************************************/
745 /* RTC reference time/date access */
746 static time_t qemu_ref_timedate(QEMUClockType clock)
747 {
748 time_t value = qemu_clock_get_ms(clock) / 1000;
749 switch (clock) {
750 case QEMU_CLOCK_REALTIME:
751 value -= rtc_realtime_clock_offset;
752 /* fall through */
753 case QEMU_CLOCK_VIRTUAL:
754 value += rtc_ref_start_datetime;
755 break;
756 case QEMU_CLOCK_HOST:
757 if (rtc_base_type == RTC_BASE_DATETIME) {
758 value -= rtc_host_datetime_offset;
759 }
760 break;
761 default:
762 assert(0);
763 }
764 return value;
765 }
766
767 void qemu_get_timedate(struct tm *tm, int offset)
768 {
769 time_t ti = qemu_ref_timedate(rtc_clock);
770
771 ti += offset;
772
773 switch (rtc_base_type) {
774 case RTC_BASE_DATETIME:
775 case RTC_BASE_UTC:
776 gmtime_r(&ti, tm);
777 break;
778 case RTC_BASE_LOCALTIME:
779 localtime_r(&ti, tm);
780 break;
781 }
782 }
783
784 int qemu_timedate_diff(struct tm *tm)
785 {
786 time_t seconds;
787
788 switch (rtc_base_type) {
789 case RTC_BASE_DATETIME:
790 case RTC_BASE_UTC:
791 seconds = mktimegm(tm);
792 break;
793 case RTC_BASE_LOCALTIME:
794 {
795 struct tm tmp = *tm;
796 tmp.tm_isdst = -1; /* use timezone to figure it out */
797 seconds = mktime(&tmp);
798 break;
799 }
800 default:
801 abort();
802 }
803
804 return seconds - qemu_ref_timedate(QEMU_CLOCK_HOST);
805 }
806
807 static void configure_rtc_base_datetime(const char *startdate)
808 {
809 time_t rtc_start_datetime;
810 struct tm tm;
811
812 if (sscanf(startdate, "%d-%d-%dT%d:%d:%d", &tm.tm_year, &tm.tm_mon,
813 &tm.tm_mday, &tm.tm_hour, &tm.tm_min, &tm.tm_sec) == 6) {
814 /* OK */
815 } else if (sscanf(startdate, "%d-%d-%d",
816 &tm.tm_year, &tm.tm_mon, &tm.tm_mday) == 3) {
817 tm.tm_hour = 0;
818 tm.tm_min = 0;
819 tm.tm_sec = 0;
820 } else {
821 goto date_fail;
822 }
823 tm.tm_year -= 1900;
824 tm.tm_mon--;
825 rtc_start_datetime = mktimegm(&tm);
826 if (rtc_start_datetime == -1) {
827 date_fail:
828 error_report("invalid datetime format");
829 error_printf("valid formats: "
830 "'2006-06-17T16:01:21' or '2006-06-17'\n");
831 exit(1);
832 }
833 rtc_host_datetime_offset = rtc_ref_start_datetime - rtc_start_datetime;
834 rtc_ref_start_datetime = rtc_start_datetime;
835 }
836
837 static void configure_rtc(QemuOpts *opts)
838 {
839 const char *value;
840
841 /* Set defaults */
842 rtc_clock = QEMU_CLOCK_HOST;
843 rtc_ref_start_datetime = qemu_clock_get_ms(QEMU_CLOCK_HOST) / 1000;
844 rtc_realtime_clock_offset = qemu_clock_get_ms(QEMU_CLOCK_REALTIME) / 1000;
845
846 value = qemu_opt_get(opts, "base");
847 if (value) {
848 if (!strcmp(value, "utc")) {
849 rtc_base_type = RTC_BASE_UTC;
850 } else if (!strcmp(value, "localtime")) {
851 Error *blocker = NULL;
852 rtc_base_type = RTC_BASE_LOCALTIME;
853 error_setg(&blocker, QERR_REPLAY_NOT_SUPPORTED,
854 "-rtc base=localtime");
855 replay_add_blocker(blocker);
856 } else {
857 rtc_base_type = RTC_BASE_DATETIME;
858 configure_rtc_base_datetime(value);
859 }
860 }
861 value = qemu_opt_get(opts, "clock");
862 if (value) {
863 if (!strcmp(value, "host")) {
864 rtc_clock = QEMU_CLOCK_HOST;
865 } else if (!strcmp(value, "rt")) {
866 rtc_clock = QEMU_CLOCK_REALTIME;
867 } else if (!strcmp(value, "vm")) {
868 rtc_clock = QEMU_CLOCK_VIRTUAL;
869 } else {
870 error_report("invalid option value '%s'", value);
871 exit(1);
872 }
873 }
874 value = qemu_opt_get(opts, "driftfix");
875 if (value) {
876 if (!strcmp(value, "slew")) {
877 object_register_sugar_prop("mc146818rtc",
878 "lost_tick_policy",
879 "slew");
880 } else if (!strcmp(value, "none")) {
881 /* discard is default */
882 } else {
883 error_report("invalid option value '%s'", value);
884 exit(1);
885 }
886 }
887 }
888
889 static int parse_name(void *opaque, QemuOpts *opts, Error **errp)
890 {
891 const char *proc_name;
892
893 if (qemu_opt_get(opts, "debug-threads")) {
894 qemu_thread_naming(qemu_opt_get_bool(opts, "debug-threads", false));
895 }
896 qemu_name = qemu_opt_get(opts, "guest");
897
898 proc_name = qemu_opt_get(opts, "process");
899 if (proc_name) {
900 os_set_proc_name(proc_name);
901 }
902
903 return 0;
904 }
905
906 bool defaults_enabled(void)
907 {
908 return has_defaults;
909 }
910
911 #ifndef _WIN32
912 static int parse_add_fd(void *opaque, QemuOpts *opts, Error **errp)
913 {
914 int fd, dupfd, flags;
915 int64_t fdset_id;
916 const char *fd_opaque = NULL;
917 AddfdInfo *fdinfo;
918
919 fd = qemu_opt_get_number(opts, "fd", -1);
920 fdset_id = qemu_opt_get_number(opts, "set", -1);
921 fd_opaque = qemu_opt_get(opts, "opaque");
922
923 if (fd < 0) {
924 error_setg(errp, "fd option is required and must be non-negative");
925 return -1;
926 }
927
928 if (fd <= STDERR_FILENO) {
929 error_setg(errp, "fd cannot be a standard I/O stream");
930 return -1;
931 }
932
933 /*
934 * All fds inherited across exec() necessarily have FD_CLOEXEC
935 * clear, while qemu sets FD_CLOEXEC on all other fds used internally.
936 */
937 flags = fcntl(fd, F_GETFD);
938 if (flags == -1 || (flags & FD_CLOEXEC)) {
939 error_setg(errp, "fd is not valid or already in use");
940 return -1;
941 }
942
943 if (fdset_id < 0) {
944 error_setg(errp, "set option is required and must be non-negative");
945 return -1;
946 }
947
948 #ifdef F_DUPFD_CLOEXEC
949 dupfd = fcntl(fd, F_DUPFD_CLOEXEC, 0);
950 #else
951 dupfd = dup(fd);
952 if (dupfd != -1) {
953 qemu_set_cloexec(dupfd);
954 }
955 #endif
956 if (dupfd == -1) {
957 error_setg(errp, "error duplicating fd: %s", strerror(errno));
958 return -1;
959 }
960
961 /* add the duplicate fd, and optionally the opaque string, to the fd set */
962 fdinfo = monitor_fdset_add_fd(dupfd, true, fdset_id, !!fd_opaque, fd_opaque,
963 &error_abort);
964 g_free(fdinfo);
965
966 return 0;
967 }
968
969 static int cleanup_add_fd(void *opaque, QemuOpts *opts, Error **errp)
970 {
971 int fd;
972
973 fd = qemu_opt_get_number(opts, "fd", -1);
974 close(fd);
975
976 return 0;
977 }
978 #endif
979
980 /***********************************************************/
981 /* QEMU Block devices */
982
983 #define HD_OPTS "media=disk"
984 #define CDROM_OPTS "media=cdrom"
985 #define FD_OPTS ""
986 #define PFLASH_OPTS ""
987 #define MTD_OPTS ""
988 #define SD_OPTS ""
989
990 static int drive_init_func(void *opaque, QemuOpts *opts, Error **errp)
991 {
992 BlockInterfaceType *block_default_type = opaque;
993
994 return drive_new(opts, *block_default_type, errp) == NULL;
995 }
996
997 static int drive_enable_snapshot(void *opaque, QemuOpts *opts, Error **errp)
998 {
999 if (qemu_opt_get(opts, "snapshot") == NULL) {
1000 qemu_opt_set(opts, "snapshot", "on", &error_abort);
1001 }
1002 return 0;
1003 }
1004
1005 static void default_drive(int enable, int snapshot, BlockInterfaceType type,
1006 int index, const char *optstr)
1007 {
1008 QemuOpts *opts;
1009 DriveInfo *dinfo;
1010
1011 if (!enable || drive_get_by_index(type, index)) {
1012 return;
1013 }
1014
1015 opts = drive_add(type, index, NULL, optstr);
1016 if (snapshot) {
1017 drive_enable_snapshot(NULL, opts, NULL);
1018 }
1019
1020 dinfo = drive_new(opts, type, &error_abort);
1021 dinfo->is_default = true;
1022
1023 }
1024
1025 typedef struct BlockdevOptionsQueueEntry {
1026 BlockdevOptions *bdo;
1027 Location loc;
1028 QSIMPLEQ_ENTRY(BlockdevOptionsQueueEntry) entry;
1029 } BlockdevOptionsQueueEntry;
1030
1031 typedef QSIMPLEQ_HEAD(, BlockdevOptionsQueueEntry) BlockdevOptionsQueue;
1032
1033 static void configure_blockdev(BlockdevOptionsQueue *bdo_queue,
1034 MachineClass *machine_class, int snapshot)
1035 {
1036 /*
1037 * If the currently selected machine wishes to override the
1038 * units-per-bus property of its default HBA interface type, do so
1039 * now.
1040 */
1041 if (machine_class->units_per_default_bus) {
1042 override_max_devs(machine_class->block_default_type,
1043 machine_class->units_per_default_bus);
1044 }
1045
1046 /* open the virtual block devices */
1047 while (!QSIMPLEQ_EMPTY(bdo_queue)) {
1048 BlockdevOptionsQueueEntry *bdo = QSIMPLEQ_FIRST(bdo_queue);
1049
1050 QSIMPLEQ_REMOVE_HEAD(bdo_queue, entry);
1051 loc_push_restore(&bdo->loc);
1052 qmp_blockdev_add(bdo->bdo, &error_fatal);
1053 loc_pop(&bdo->loc);
1054 qapi_free_BlockdevOptions(bdo->bdo);
1055 g_free(bdo);
1056 }
1057 if (snapshot) {
1058 qemu_opts_foreach(qemu_find_opts("drive"), drive_enable_snapshot,
1059 NULL, NULL);
1060 }
1061 if (qemu_opts_foreach(qemu_find_opts("drive"), drive_init_func,
1062 &machine_class->block_default_type, &error_fatal)) {
1063 /* We printed help */
1064 exit(0);
1065 }
1066
1067 default_drive(default_cdrom, snapshot, machine_class->block_default_type, 2,
1068 CDROM_OPTS);
1069 default_drive(default_floppy, snapshot, IF_FLOPPY, 0, FD_OPTS);
1070 default_drive(default_sdcard, snapshot, IF_SD, 0, SD_OPTS);
1071
1072 }
1073
1074 static QemuOptsList qemu_smp_opts = {
1075 .name = "smp-opts",
1076 .implied_opt_name = "cpus",
1077 .merge_lists = true,
1078 .head = QTAILQ_HEAD_INITIALIZER(qemu_smp_opts.head),
1079 .desc = {
1080 {
1081 .name = "cpus",
1082 .type = QEMU_OPT_NUMBER,
1083 }, {
1084 .name = "sockets",
1085 .type = QEMU_OPT_NUMBER,
1086 }, {
1087 .name = "dies",
1088 .type = QEMU_OPT_NUMBER,
1089 }, {
1090 .name = "cores",
1091 .type = QEMU_OPT_NUMBER,
1092 }, {
1093 .name = "threads",
1094 .type = QEMU_OPT_NUMBER,
1095 }, {
1096 .name = "maxcpus",
1097 .type = QEMU_OPT_NUMBER,
1098 },
1099 { /*End of list */ }
1100 },
1101 };
1102
1103 static void realtime_init(void)
1104 {
1105 if (enable_mlock) {
1106 if (os_mlock() < 0) {
1107 error_report("locking memory failed");
1108 exit(1);
1109 }
1110 }
1111 }
1112
1113
1114 static void configure_msg(QemuOpts *opts)
1115 {
1116 error_with_timestamp = qemu_opt_get_bool(opts, "timestamp", false);
1117 }
1118
1119
1120 /***********************************************************/
1121 /* USB devices */
1122
1123 static int usb_device_add(const char *devname)
1124 {
1125 USBDevice *dev = NULL;
1126
1127 if (!machine_usb(current_machine)) {
1128 return -1;
1129 }
1130
1131 dev = usbdevice_create(devname);
1132 if (!dev)
1133 return -1;
1134
1135 return 0;
1136 }
1137
1138 static int usb_parse(const char *cmdline)
1139 {
1140 int r;
1141 r = usb_device_add(cmdline);
1142 if (r < 0) {
1143 error_report("could not add USB device '%s'", cmdline);
1144 }
1145 return r;
1146 }
1147
1148 /***********************************************************/
1149 /* machine registration */
1150
1151 MachineState *current_machine;
1152
1153 static MachineClass *find_machine(const char *name, GSList *machines)
1154 {
1155 GSList *el;
1156
1157 for (el = machines; el; el = el->next) {
1158 MachineClass *mc = el->data;
1159
1160 if (!strcmp(mc->name, name) || !g_strcmp0(mc->alias, name)) {
1161 return mc;
1162 }
1163 }
1164
1165 return NULL;
1166 }
1167
1168 static MachineClass *find_default_machine(GSList *machines)
1169 {
1170 GSList *el;
1171 MachineClass *default_machineclass = NULL;
1172
1173 for (el = machines; el; el = el->next) {
1174 MachineClass *mc = el->data;
1175
1176 if (mc->is_default) {
1177 assert(default_machineclass == NULL && "Multiple default machines");
1178 default_machineclass = mc;
1179 }
1180 }
1181
1182 return default_machineclass;
1183 }
1184
1185 static int machine_help_func(QemuOpts *opts, MachineState *machine)
1186 {
1187 ObjectProperty *prop;
1188 ObjectPropertyIterator iter;
1189
1190 if (!qemu_opt_has_help_opt(opts)) {
1191 return 0;
1192 }
1193
1194 object_property_iter_init(&iter, OBJECT(machine));
1195 while ((prop = object_property_iter_next(&iter))) {
1196 if (!prop->set) {
1197 continue;
1198 }
1199
1200 printf("%s.%s=%s", MACHINE_GET_CLASS(machine)->name,
1201 prop->name, prop->type);
1202 if (prop->description) {
1203 printf(" (%s)\n", prop->description);
1204 } else {
1205 printf("\n");
1206 }
1207 }
1208
1209 return 1;
1210 }
1211
1212 struct VMChangeStateEntry {
1213 VMChangeStateHandler *cb;
1214 void *opaque;
1215 QTAILQ_ENTRY(VMChangeStateEntry) entries;
1216 int priority;
1217 };
1218
1219 static QTAILQ_HEAD(, VMChangeStateEntry) vm_change_state_head;
1220
1221 /**
1222 * qemu_add_vm_change_state_handler_prio:
1223 * @cb: the callback to invoke
1224 * @opaque: user data passed to the callback
1225 * @priority: low priorities execute first when the vm runs and the reverse is
1226 * true when the vm stops
1227 *
1228 * Register a callback function that is invoked when the vm starts or stops
1229 * running.
1230 *
1231 * Returns: an entry to be freed using qemu_del_vm_change_state_handler()
1232 */
1233 VMChangeStateEntry *qemu_add_vm_change_state_handler_prio(
1234 VMChangeStateHandler *cb, void *opaque, int priority)
1235 {
1236 VMChangeStateEntry *e;
1237 VMChangeStateEntry *other;
1238
1239 e = g_malloc0(sizeof(*e));
1240 e->cb = cb;
1241 e->opaque = opaque;
1242 e->priority = priority;
1243
1244 /* Keep list sorted in ascending priority order */
1245 QTAILQ_FOREACH(other, &vm_change_state_head, entries) {
1246 if (priority < other->priority) {
1247 QTAILQ_INSERT_BEFORE(other, e, entries);
1248 return e;
1249 }
1250 }
1251
1252 QTAILQ_INSERT_TAIL(&vm_change_state_head, e, entries);
1253 return e;
1254 }
1255
1256 VMChangeStateEntry *qemu_add_vm_change_state_handler(VMChangeStateHandler *cb,
1257 void *opaque)
1258 {
1259 return qemu_add_vm_change_state_handler_prio(cb, opaque, 0);
1260 }
1261
1262 void qemu_del_vm_change_state_handler(VMChangeStateEntry *e)
1263 {
1264 QTAILQ_REMOVE(&vm_change_state_head, e, entries);
1265 g_free(e);
1266 }
1267
1268 void vm_state_notify(int running, RunState state)
1269 {
1270 VMChangeStateEntry *e, *next;
1271
1272 trace_vm_state_notify(running, state, RunState_str(state));
1273
1274 if (running) {
1275 QTAILQ_FOREACH_SAFE(e, &vm_change_state_head, entries, next) {
1276 e->cb(e->opaque, running, state);
1277 }
1278 } else {
1279 QTAILQ_FOREACH_REVERSE_SAFE(e, &vm_change_state_head, entries, next) {
1280 e->cb(e->opaque, running, state);
1281 }
1282 }
1283 }
1284
1285 static ShutdownCause reset_requested;
1286 static ShutdownCause shutdown_requested;
1287 static int shutdown_signal;
1288 static pid_t shutdown_pid;
1289 static int powerdown_requested;
1290 static int debug_requested;
1291 static int suspend_requested;
1292 static bool preconfig_exit_requested = true;
1293 static WakeupReason wakeup_reason;
1294 static NotifierList powerdown_notifiers =
1295 NOTIFIER_LIST_INITIALIZER(powerdown_notifiers);
1296 static NotifierList suspend_notifiers =
1297 NOTIFIER_LIST_INITIALIZER(suspend_notifiers);
1298 static NotifierList wakeup_notifiers =
1299 NOTIFIER_LIST_INITIALIZER(wakeup_notifiers);
1300 static NotifierList shutdown_notifiers =
1301 NOTIFIER_LIST_INITIALIZER(shutdown_notifiers);
1302 static uint32_t wakeup_reason_mask = ~(1 << QEMU_WAKEUP_REASON_NONE);
1303
1304 ShutdownCause qemu_shutdown_requested_get(void)
1305 {
1306 return shutdown_requested;
1307 }
1308
1309 ShutdownCause qemu_reset_requested_get(void)
1310 {
1311 return reset_requested;
1312 }
1313
1314 static int qemu_shutdown_requested(void)
1315 {
1316 return atomic_xchg(&shutdown_requested, SHUTDOWN_CAUSE_NONE);
1317 }
1318
1319 static void qemu_kill_report(void)
1320 {
1321 if (!qtest_driver() && shutdown_signal) {
1322 if (shutdown_pid == 0) {
1323 /* This happens for eg ^C at the terminal, so it's worth
1324 * avoiding printing an odd message in that case.
1325 */
1326 error_report("terminating on signal %d", shutdown_signal);
1327 } else {
1328 char *shutdown_cmd = qemu_get_pid_name(shutdown_pid);
1329
1330 error_report("terminating on signal %d from pid " FMT_pid " (%s)",
1331 shutdown_signal, shutdown_pid,
1332 shutdown_cmd ? shutdown_cmd : "<unknown process>");
1333 g_free(shutdown_cmd);
1334 }
1335 shutdown_signal = 0;
1336 }
1337 }
1338
1339 static ShutdownCause qemu_reset_requested(void)
1340 {
1341 ShutdownCause r = reset_requested;
1342
1343 if (r && replay_checkpoint(CHECKPOINT_RESET_REQUESTED)) {
1344 reset_requested = SHUTDOWN_CAUSE_NONE;
1345 return r;
1346 }
1347 return SHUTDOWN_CAUSE_NONE;
1348 }
1349
1350 static int qemu_suspend_requested(void)
1351 {
1352 int r = suspend_requested;
1353 if (r && replay_checkpoint(CHECKPOINT_SUSPEND_REQUESTED)) {
1354 suspend_requested = 0;
1355 return r;
1356 }
1357 return false;
1358 }
1359
1360 static WakeupReason qemu_wakeup_requested(void)
1361 {
1362 return wakeup_reason;
1363 }
1364
1365 static int qemu_powerdown_requested(void)
1366 {
1367 int r = powerdown_requested;
1368 powerdown_requested = 0;
1369 return r;
1370 }
1371
1372 static int qemu_debug_requested(void)
1373 {
1374 int r = debug_requested;
1375 debug_requested = 0;
1376 return r;
1377 }
1378
1379 void qemu_exit_preconfig_request(void)
1380 {
1381 preconfig_exit_requested = true;
1382 }
1383
1384 /*
1385 * Reset the VM. Issue an event unless @reason is SHUTDOWN_CAUSE_NONE.
1386 */
1387 void qemu_system_reset(ShutdownCause reason)
1388 {
1389 MachineClass *mc;
1390
1391 mc = current_machine ? MACHINE_GET_CLASS(current_machine) : NULL;
1392
1393 cpu_synchronize_all_states();
1394
1395 if (mc && mc->reset) {
1396 mc->reset(current_machine);
1397 } else {
1398 qemu_devices_reset();
1399 }
1400 if (reason && reason != SHUTDOWN_CAUSE_SUBSYSTEM_RESET) {
1401 qapi_event_send_reset(shutdown_caused_by_guest(reason), reason);
1402 }
1403 cpu_synchronize_all_post_reset();
1404 }
1405
1406 /*
1407 * Wake the VM after suspend.
1408 */
1409 static void qemu_system_wakeup(void)
1410 {
1411 MachineClass *mc;
1412
1413 mc = current_machine ? MACHINE_GET_CLASS(current_machine) : NULL;
1414
1415 if (mc && mc->wakeup) {
1416 mc->wakeup(current_machine);
1417 }
1418 }
1419
1420 void qemu_system_guest_panicked(GuestPanicInformation *info)
1421 {
1422 qemu_log_mask(LOG_GUEST_ERROR, "Guest crashed");
1423
1424 if (current_cpu) {
1425 current_cpu->crash_occurred = true;
1426 }
1427 qapi_event_send_guest_panicked(GUEST_PANIC_ACTION_PAUSE,
1428 !!info, info);
1429 vm_stop(RUN_STATE_GUEST_PANICKED);
1430 if (!no_shutdown) {
1431 qapi_event_send_guest_panicked(GUEST_PANIC_ACTION_POWEROFF,
1432 !!info, info);
1433 qemu_system_shutdown_request(SHUTDOWN_CAUSE_GUEST_PANIC);
1434 }
1435
1436 if (info) {
1437 if (info->type == GUEST_PANIC_INFORMATION_TYPE_HYPER_V) {
1438 qemu_log_mask(LOG_GUEST_ERROR, "\nHV crash parameters: (%#"PRIx64
1439 " %#"PRIx64" %#"PRIx64" %#"PRIx64" %#"PRIx64")\n",
1440 info->u.hyper_v.arg1,
1441 info->u.hyper_v.arg2,
1442 info->u.hyper_v.arg3,
1443 info->u.hyper_v.arg4,
1444 info->u.hyper_v.arg5);
1445 } else if (info->type == GUEST_PANIC_INFORMATION_TYPE_S390) {
1446 qemu_log_mask(LOG_GUEST_ERROR, " on cpu %d: %s\n"
1447 "PSW: 0x%016" PRIx64 " 0x%016" PRIx64"\n",
1448 info->u.s390.core,
1449 S390CrashReason_str(info->u.s390.reason),
1450 info->u.s390.psw_mask,
1451 info->u.s390.psw_addr);
1452 }
1453 qapi_free_GuestPanicInformation(info);
1454 }
1455 }
1456
1457 void qemu_system_guest_crashloaded(GuestPanicInformation *info)
1458 {
1459 qemu_log_mask(LOG_GUEST_ERROR, "Guest crash loaded");
1460
1461 qapi_event_send_guest_crashloaded(GUEST_PANIC_ACTION_RUN,
1462 !!info, info);
1463
1464 if (info) {
1465 qapi_free_GuestPanicInformation(info);
1466 }
1467 }
1468
1469 void qemu_system_reset_request(ShutdownCause reason)
1470 {
1471 if (no_reboot && reason != SHUTDOWN_CAUSE_SUBSYSTEM_RESET) {
1472 shutdown_requested = reason;
1473 } else {
1474 reset_requested = reason;
1475 }
1476 cpu_stop_current();
1477 qemu_notify_event();
1478 }
1479
1480 static void qemu_system_suspend(void)
1481 {
1482 pause_all_vcpus();
1483 notifier_list_notify(&suspend_notifiers, NULL);
1484 runstate_set(RUN_STATE_SUSPENDED);
1485 qapi_event_send_suspend();
1486 }
1487
1488 void qemu_system_suspend_request(void)
1489 {
1490 if (runstate_check(RUN_STATE_SUSPENDED)) {
1491 return;
1492 }
1493 suspend_requested = 1;
1494 cpu_stop_current();
1495 qemu_notify_event();
1496 }
1497
1498 void qemu_register_suspend_notifier(Notifier *notifier)
1499 {
1500 notifier_list_add(&suspend_notifiers, notifier);
1501 }
1502
1503 void qemu_system_wakeup_request(WakeupReason reason, Error **errp)
1504 {
1505 trace_system_wakeup_request(reason);
1506
1507 if (!runstate_check(RUN_STATE_SUSPENDED)) {
1508 error_setg(errp,
1509 "Unable to wake up: guest is not in suspended state");
1510 return;
1511 }
1512 if (!(wakeup_reason_mask & (1 << reason))) {
1513 return;
1514 }
1515 runstate_set(RUN_STATE_RUNNING);
1516 wakeup_reason = reason;
1517 qemu_notify_event();
1518 }
1519
1520 void qemu_system_wakeup_enable(WakeupReason reason, bool enabled)
1521 {
1522 if (enabled) {
1523 wakeup_reason_mask |= (1 << reason);
1524 } else {
1525 wakeup_reason_mask &= ~(1 << reason);
1526 }
1527 }
1528
1529 void qemu_register_wakeup_notifier(Notifier *notifier)
1530 {
1531 notifier_list_add(&wakeup_notifiers, notifier);
1532 }
1533
1534 void qemu_register_wakeup_support(void)
1535 {
1536 wakeup_suspend_enabled = true;
1537 }
1538
1539 bool qemu_wakeup_suspend_enabled(void)
1540 {
1541 return wakeup_suspend_enabled;
1542 }
1543
1544 void qemu_system_killed(int signal, pid_t pid)
1545 {
1546 shutdown_signal = signal;
1547 shutdown_pid = pid;
1548 no_shutdown = 0;
1549
1550 /* Cannot call qemu_system_shutdown_request directly because
1551 * we are in a signal handler.
1552 */
1553 shutdown_requested = SHUTDOWN_CAUSE_HOST_SIGNAL;
1554 qemu_notify_event();
1555 }
1556
1557 void qemu_system_shutdown_request(ShutdownCause reason)
1558 {
1559 trace_qemu_system_shutdown_request(reason);
1560 replay_shutdown_request(reason);
1561 shutdown_requested = reason;
1562 qemu_notify_event();
1563 }
1564
1565 static void qemu_system_powerdown(void)
1566 {
1567 qapi_event_send_powerdown();
1568 notifier_list_notify(&powerdown_notifiers, NULL);
1569 }
1570
1571 static void qemu_system_shutdown(ShutdownCause cause)
1572 {
1573 qapi_event_send_shutdown(shutdown_caused_by_guest(cause), cause);
1574 notifier_list_notify(&shutdown_notifiers, &cause);
1575 }
1576
1577 void qemu_system_powerdown_request(void)
1578 {
1579 trace_qemu_system_powerdown_request();
1580 powerdown_requested = 1;
1581 qemu_notify_event();
1582 }
1583
1584 void qemu_register_powerdown_notifier(Notifier *notifier)
1585 {
1586 notifier_list_add(&powerdown_notifiers, notifier);
1587 }
1588
1589 void qemu_register_shutdown_notifier(Notifier *notifier)
1590 {
1591 notifier_list_add(&shutdown_notifiers, notifier);
1592 }
1593
1594 void qemu_system_debug_request(void)
1595 {
1596 debug_requested = 1;
1597 qemu_notify_event();
1598 }
1599
1600 static bool main_loop_should_exit(void)
1601 {
1602 RunState r;
1603 ShutdownCause request;
1604
1605 if (preconfig_exit_requested) {
1606 if (runstate_check(RUN_STATE_PRECONFIG)) {
1607 runstate_set(RUN_STATE_PRELAUNCH);
1608 }
1609 preconfig_exit_requested = false;
1610 return true;
1611 }
1612 if (qemu_debug_requested()) {
1613 vm_stop(RUN_STATE_DEBUG);
1614 }
1615 if (qemu_suspend_requested()) {
1616 qemu_system_suspend();
1617 }
1618 request = qemu_shutdown_requested();
1619 if (request) {
1620 qemu_kill_report();
1621 qemu_system_shutdown(request);
1622 if (no_shutdown) {
1623 vm_stop(RUN_STATE_SHUTDOWN);
1624 } else {
1625 return true;
1626 }
1627 }
1628 request = qemu_reset_requested();
1629 if (request) {
1630 pause_all_vcpus();
1631 qemu_system_reset(request);
1632 resume_all_vcpus();
1633 /*
1634 * runstate can change in pause_all_vcpus()
1635 * as iothread mutex is unlocked
1636 */
1637 if (!runstate_check(RUN_STATE_RUNNING) &&
1638 !runstate_check(RUN_STATE_INMIGRATE) &&
1639 !runstate_check(RUN_STATE_FINISH_MIGRATE)) {
1640 runstate_set(RUN_STATE_PRELAUNCH);
1641 }
1642 }
1643 if (qemu_wakeup_requested()) {
1644 pause_all_vcpus();
1645 qemu_system_wakeup();
1646 notifier_list_notify(&wakeup_notifiers, &wakeup_reason);
1647 wakeup_reason = QEMU_WAKEUP_REASON_NONE;
1648 resume_all_vcpus();
1649 qapi_event_send_wakeup();
1650 }
1651 if (qemu_powerdown_requested()) {
1652 qemu_system_powerdown();
1653 }
1654 if (qemu_vmstop_requested(&r)) {
1655 vm_stop(r);
1656 }
1657 return false;
1658 }
1659
1660 void qemu_main_loop(void)
1661 {
1662 #ifdef CONFIG_PROFILER
1663 int64_t ti;
1664 #endif
1665 while (!main_loop_should_exit()) {
1666 #ifdef CONFIG_PROFILER
1667 ti = profile_getclock();
1668 #endif
1669 main_loop_wait(false);
1670 #ifdef CONFIG_PROFILER
1671 dev_time += profile_getclock() - ti;
1672 #endif
1673 }
1674 }
1675
1676 static void version(void)
1677 {
1678 printf("QEMU emulator version " QEMU_FULL_VERSION "\n"
1679 QEMU_COPYRIGHT "\n");
1680 }
1681
1682 static void help(int exitcode)
1683 {
1684 version();
1685 printf("usage: %s [options] [disk_image]\n\n"
1686 "'disk_image' is a raw hard disk image for IDE hard disk 0\n\n",
1687 error_get_progname());
1688
1689 #define QEMU_OPTIONS_GENERATE_HELP
1690 #include "qemu-options-wrapper.h"
1691
1692 printf("\nDuring emulation, the following keys are useful:\n"
1693 "ctrl-alt-f toggle full screen\n"
1694 "ctrl-alt-n switch to virtual console 'n'\n"
1695 "ctrl-alt toggle mouse and keyboard grab\n"
1696 "\n"
1697 "When using -nographic, press 'ctrl-a h' to get some help.\n"
1698 "\n"
1699 QEMU_HELP_BOTTOM "\n");
1700
1701 exit(exitcode);
1702 }
1703
1704 #define HAS_ARG 0x0001
1705
1706 typedef struct QEMUOption {
1707 const char *name;
1708 int flags;
1709 int index;
1710 uint32_t arch_mask;
1711 } QEMUOption;
1712
1713 static const QEMUOption qemu_options[] = {
1714 { "h", 0, QEMU_OPTION_h, QEMU_ARCH_ALL },
1715 #define QEMU_OPTIONS_GENERATE_OPTIONS
1716 #include "qemu-options-wrapper.h"
1717 { NULL },
1718 };
1719
1720 typedef struct VGAInterfaceInfo {
1721 const char *opt_name; /* option name */
1722 const char *name; /* human-readable name */
1723 /* Class names indicating that support is available.
1724 * If no class is specified, the interface is always available */
1725 const char *class_names[2];
1726 } VGAInterfaceInfo;
1727
1728 static const VGAInterfaceInfo vga_interfaces[VGA_TYPE_MAX] = {
1729 [VGA_NONE] = {
1730 .opt_name = "none",
1731 .name = "no graphic card",
1732 },
1733 [VGA_STD] = {
1734 .opt_name = "std",
1735 .name = "standard VGA",
1736 .class_names = { "VGA", "isa-vga" },
1737 },
1738 [VGA_CIRRUS] = {
1739 .opt_name = "cirrus",
1740 .name = "Cirrus VGA",
1741 .class_names = { "cirrus-vga", "isa-cirrus-vga" },
1742 },
1743 [VGA_VMWARE] = {
1744 .opt_name = "vmware",
1745 .name = "VMWare SVGA",
1746 .class_names = { "vmware-svga" },
1747 },
1748 [VGA_VIRTIO] = {
1749 .opt_name = "virtio",
1750 .name = "Virtio VGA",
1751 .class_names = { "virtio-vga" },
1752 },
1753 [VGA_QXL] = {
1754 .opt_name = "qxl",
1755 .name = "QXL VGA",
1756 .class_names = { "qxl-vga" },
1757 },
1758 [VGA_TCX] = {
1759 .opt_name = "tcx",
1760 .name = "TCX framebuffer",
1761 .class_names = { "SUNW,tcx" },
1762 },
1763 [VGA_CG3] = {
1764 .opt_name = "cg3",
1765 .name = "CG3 framebuffer",
1766 .class_names = { "cgthree" },
1767 },
1768 [VGA_XENFB] = {
1769 .opt_name = "xenfb",
1770 .name = "Xen paravirtualized framebuffer",
1771 },
1772 };
1773
1774 static bool vga_interface_available(VGAInterfaceType t)
1775 {
1776 const VGAInterfaceInfo *ti = &vga_interfaces[t];
1777
1778 assert(t < VGA_TYPE_MAX);
1779 return !ti->class_names[0] ||
1780 module_object_class_by_name(ti->class_names[0]) ||
1781 module_object_class_by_name(ti->class_names[1]);
1782 }
1783
1784 static const char *
1785 get_default_vga_model(const MachineClass *machine_class)
1786 {
1787 if (machine_class->default_display) {
1788 return machine_class->default_display;
1789 } else if (vga_interface_available(VGA_CIRRUS)) {
1790 return "cirrus";
1791 } else if (vga_interface_available(VGA_STD)) {
1792 return "std";
1793 }
1794
1795 return NULL;
1796 }
1797
1798 static void select_vgahw(const MachineClass *machine_class, const char *p)
1799 {
1800 const char *opts;
1801 int t;
1802
1803 if (g_str_equal(p, "help")) {
1804 const char *def = get_default_vga_model(machine_class);
1805
1806 for (t = 0; t < VGA_TYPE_MAX; t++) {
1807 const VGAInterfaceInfo *ti = &vga_interfaces[t];
1808
1809 if (vga_interface_available(t) && ti->opt_name) {
1810 printf("%-20s %s%s\n", ti->opt_name, ti->name ?: "",
1811 g_str_equal(ti->opt_name, def) ? " (default)" : "");
1812 }
1813 }
1814 exit(0);
1815 }
1816
1817 assert(vga_interface_type == VGA_NONE);
1818 for (t = 0; t < VGA_TYPE_MAX; t++) {
1819 const VGAInterfaceInfo *ti = &vga_interfaces[t];
1820 if (ti->opt_name && strstart(p, ti->opt_name, &opts)) {
1821 if (!vga_interface_available(t)) {
1822 error_report("%s not available", ti->name);
1823 exit(1);
1824 }
1825 vga_interface_type = t;
1826 break;
1827 }
1828 }
1829 if (t == VGA_TYPE_MAX) {
1830 invalid_vga:
1831 error_report("unknown vga type: %s", p);
1832 exit(1);
1833 }
1834 while (*opts) {
1835 const char *nextopt;
1836
1837 if (strstart(opts, ",retrace=", &nextopt)) {
1838 opts = nextopt;
1839 if (strstart(opts, "dumb", &nextopt))
1840 vga_retrace_method = VGA_RETRACE_DUMB;
1841 else if (strstart(opts, "precise", &nextopt))
1842 vga_retrace_method = VGA_RETRACE_PRECISE;
1843 else goto invalid_vga;
1844 } else goto invalid_vga;
1845 opts = nextopt;
1846 }
1847 }
1848
1849 static void parse_display_qapi(const char *optarg)
1850 {
1851 DisplayOptions *opts;
1852 Visitor *v;
1853
1854 v = qobject_input_visitor_new_str(optarg, "type", &error_fatal);
1855
1856 visit_type_DisplayOptions(v, NULL, &opts, &error_fatal);
1857 QAPI_CLONE_MEMBERS(DisplayOptions, &dpy, opts);
1858
1859 qapi_free_DisplayOptions(opts);
1860 visit_free(v);
1861 }
1862
1863 DisplayOptions *qmp_query_display_options(Error **errp)
1864 {
1865 return QAPI_CLONE(DisplayOptions, &dpy);
1866 }
1867
1868 static void parse_display(const char *p)
1869 {
1870 const char *opts;
1871
1872 if (is_help_option(p)) {
1873 qemu_display_help();
1874 exit(0);
1875 }
1876
1877 if (strstart(p, "sdl", &opts)) {
1878 /*
1879 * sdl DisplayType needs hand-crafted parser instead of
1880 * parse_display_qapi() due to some options not in
1881 * DisplayOptions, specifically:
1882 * - frame
1883 * Already deprecated.
1884 * - ctrl_grab + alt_grab
1885 * Not clear yet what happens to them long-term. Should
1886 * replaced by something better or deprecated and dropped.
1887 */
1888 dpy.type = DISPLAY_TYPE_SDL;
1889 while (*opts) {
1890 const char *nextopt;
1891
1892 if (strstart(opts, ",alt_grab=", &nextopt)) {
1893 opts = nextopt;
1894 if (strstart(opts, "on", &nextopt)) {
1895 alt_grab = 1;
1896 } else if (strstart(opts, "off", &nextopt)) {
1897 alt_grab = 0;
1898 } else {
1899 goto invalid_sdl_args;
1900 }
1901 } else if (strstart(opts, ",ctrl_grab=", &nextopt)) {
1902 opts = nextopt;
1903 if (strstart(opts, "on", &nextopt)) {
1904 ctrl_grab = 1;
1905 } else if (strstart(opts, "off", &nextopt)) {
1906 ctrl_grab = 0;
1907 } else {
1908 goto invalid_sdl_args;
1909 }
1910 } else if (strstart(opts, ",window_close=", &nextopt)) {
1911 opts = nextopt;
1912 dpy.has_window_close = true;
1913 if (strstart(opts, "on", &nextopt)) {
1914 dpy.window_close = true;
1915 } else if (strstart(opts, "off", &nextopt)) {
1916 dpy.window_close = false;
1917 } else {
1918 goto invalid_sdl_args;
1919 }
1920 } else if (strstart(opts, ",show-cursor=", &nextopt)) {
1921 opts = nextopt;
1922 dpy.has_show_cursor = true;
1923 if (strstart(opts, "on", &nextopt)) {
1924 dpy.show_cursor = true;
1925 } else if (strstart(opts, "off", &nextopt)) {
1926 dpy.show_cursor = false;
1927 } else {
1928 goto invalid_sdl_args;
1929 }
1930 } else if (strstart(opts, ",gl=", &nextopt)) {
1931 opts = nextopt;
1932 dpy.has_gl = true;
1933 if (strstart(opts, "on", &nextopt)) {
1934 dpy.gl = DISPLAYGL_MODE_ON;
1935 } else if (strstart(opts, "core", &nextopt)) {
1936 dpy.gl = DISPLAYGL_MODE_CORE;
1937 } else if (strstart(opts, "es", &nextopt)) {
1938 dpy.gl = DISPLAYGL_MODE_ES;
1939 } else if (strstart(opts, "off", &nextopt)) {
1940 dpy.gl = DISPLAYGL_MODE_OFF;
1941 } else {
1942 goto invalid_sdl_args;
1943 }
1944 } else {
1945 invalid_sdl_args:
1946 error_report("invalid SDL option string");
1947 exit(1);
1948 }
1949 opts = nextopt;
1950 }
1951 } else if (strstart(p, "vnc", &opts)) {
1952 /*
1953 * vnc isn't a (local) DisplayType but a protocol for remote
1954 * display access.
1955 */
1956 if (*opts == '=') {
1957 vnc_parse(opts + 1, &error_fatal);
1958 } else {
1959 error_report("VNC requires a display argument vnc=<display>");
1960 exit(1);
1961 }
1962 } else {
1963 parse_display_qapi(p);
1964 }
1965 }
1966
1967 char *qemu_find_file(int type, const char *name)
1968 {
1969 int i;
1970 const char *subdir;
1971 char *buf;
1972
1973 /* Try the name as a straight path first */
1974 if (access(name, R_OK) == 0) {
1975 trace_load_file(name, name);
1976 return g_strdup(name);
1977 }
1978
1979 switch (type) {
1980 case QEMU_FILE_TYPE_BIOS:
1981 subdir = "";
1982 break;
1983 case QEMU_FILE_TYPE_KEYMAP:
1984 subdir = "keymaps/";
1985 break;
1986 default:
1987 abort();
1988 }
1989
1990 for (i = 0; i < data_dir_idx; i++) {
1991 buf = g_strdup_printf("%s/%s%s", data_dir[i], subdir, name);
1992 if (access(buf, R_OK) == 0) {
1993 trace_load_file(name, buf);
1994 return buf;
1995 }
1996 g_free(buf);
1997 }
1998 return NULL;
1999 }
2000
2001 void qemu_add_data_dir(const char *path)
2002 {
2003 int i;
2004
2005 if (path == NULL) {
2006 return;
2007 }
2008 if (data_dir_idx == ARRAY_SIZE(data_dir)) {
2009 return;
2010 }
2011 for (i = 0; i < data_dir_idx; i++) {
2012 if (strcmp(data_dir[i], path) == 0) {
2013 return; /* duplicate */
2014 }
2015 }
2016 data_dir[data_dir_idx++] = g_strdup(path);
2017 }
2018
2019 static inline bool nonempty_str(const char *str)
2020 {
2021 return str && *str;
2022 }
2023
2024 static int parse_fw_cfg(void *opaque, QemuOpts *opts, Error **errp)
2025 {
2026 gchar *buf;
2027 size_t size;
2028 const char *name, *file, *str, *gen_id;
2029 FWCfgState *fw_cfg = (FWCfgState *) opaque;
2030
2031 if (fw_cfg == NULL) {
2032 error_setg(errp, "fw_cfg device not available");
2033 return -1;
2034 }
2035 name = qemu_opt_get(opts, "name");
2036 file = qemu_opt_get(opts, "file");
2037 str = qemu_opt_get(opts, "string");
2038 gen_id = qemu_opt_get(opts, "gen_id");
2039
2040 /* we need the name, and exactly one of: file, content string, gen_id */
2041 if (!nonempty_str(name) ||
2042 nonempty_str(file) + nonempty_str(str) + nonempty_str(gen_id) != 1) {
2043 error_setg(errp, "name, plus exactly one of file,"
2044 " string and gen_id, are needed");
2045 return -1;
2046 }
2047 if (strlen(name) > FW_CFG_MAX_FILE_PATH - 1) {
2048 error_setg(errp, "name too long (max. %d char)",
2049 FW_CFG_MAX_FILE_PATH - 1);
2050 return -1;
2051 }
2052 if (nonempty_str(gen_id)) {
2053 /*
2054 * In this particular case where the content is populated
2055 * internally, the "etc/" namespace protection is relaxed,
2056 * so do not emit a warning.
2057 */
2058 } else if (strncmp(name, "opt/", 4) != 0) {
2059 warn_report("externally provided fw_cfg item names "
2060 "should be prefixed with \"opt/\"");
2061 }
2062 if (nonempty_str(str)) {
2063 size = strlen(str); /* NUL terminator NOT included in fw_cfg blob */
2064 buf = g_memdup(str, size);
2065 } else if (nonempty_str(gen_id)) {
2066 Error *local_err = NULL;
2067
2068 fw_cfg_add_from_generator(fw_cfg, name, gen_id, errp);
2069 if (local_err) {
2070 error_propagate(errp, local_err);
2071 return -1;
2072 }
2073 return 0;
2074 } else {
2075 GError *err = NULL;
2076 if (!g_file_get_contents(file, &buf, &size, &err)) {
2077 error_setg(errp, "can't load %s: %s", file, err->message);
2078 g_error_free(err);
2079 return -1;
2080 }
2081 }
2082 /* For legacy, keep user files in a specific global order. */
2083 fw_cfg_set_order_override(fw_cfg, FW_CFG_ORDER_OVERRIDE_USER);
2084 fw_cfg_add_file(fw_cfg, name, buf, size);
2085 fw_cfg_reset_order_override(fw_cfg);
2086 return 0;
2087 }
2088
2089 static int device_help_func(void *opaque, QemuOpts *opts, Error **errp)
2090 {
2091 return qdev_device_help(opts);
2092 }
2093
2094 static int device_init_func(void *opaque, QemuOpts *opts, Error **errp)
2095 {
2096 DeviceState *dev;
2097
2098 dev = qdev_device_add(opts, errp);
2099 if (!dev && *errp) {
2100 error_report_err(*errp);
2101 return -1;
2102 } else if (dev) {
2103 object_unref(OBJECT(dev));
2104 }
2105 return 0;
2106 }
2107
2108 static int chardev_init_func(void *opaque, QemuOpts *opts, Error **errp)
2109 {
2110 Error *local_err = NULL;
2111
2112 if (!qemu_chr_new_from_opts(opts, NULL, &local_err)) {
2113 if (local_err) {
2114 error_propagate(errp, local_err);
2115 return -1;
2116 }
2117 exit(0);
2118 }
2119 return 0;
2120 }
2121
2122 #ifdef CONFIG_VIRTFS
2123 static int fsdev_init_func(void *opaque, QemuOpts *opts, Error **errp)
2124 {
2125 return qemu_fsdev_add(opts, errp);
2126 }
2127 #endif
2128
2129 static int mon_init_func(void *opaque, QemuOpts *opts, Error **errp)
2130 {
2131 return monitor_init_opts(opts, errp);
2132 }
2133
2134 static void monitor_parse(const char *optarg, const char *mode, bool pretty)
2135 {
2136 static int monitor_device_index = 0;
2137 QemuOpts *opts;
2138 const char *p;
2139 char label[32];
2140
2141 if (strstart(optarg, "chardev:", &p)) {
2142 snprintf(label, sizeof(label), "%s", p);
2143 } else {
2144 snprintf(label, sizeof(label), "compat_monitor%d",
2145 monitor_device_index);
2146 opts = qemu_chr_parse_compat(label, optarg, true);
2147 if (!opts) {
2148 error_report("parse error: %s", optarg);
2149 exit(1);
2150 }
2151 }
2152
2153 opts = qemu_opts_create(qemu_find_opts("mon"), label, 1, &error_fatal);
2154 qemu_opt_set(opts, "mode", mode, &error_abort);
2155 qemu_opt_set(opts, "chardev", label, &error_abort);
2156 if (!strcmp(mode, "control")) {
2157 qemu_opt_set_bool(opts, "pretty", pretty, &error_abort);
2158 } else {
2159 assert(pretty == false);
2160 }
2161 monitor_device_index++;
2162 }
2163
2164 struct device_config {
2165 enum {
2166 DEV_USB, /* -usbdevice */
2167 DEV_SERIAL, /* -serial */
2168 DEV_PARALLEL, /* -parallel */
2169 DEV_DEBUGCON, /* -debugcon */
2170 DEV_GDB, /* -gdb, -s */
2171 DEV_SCLP, /* s390 sclp */
2172 } type;
2173 const char *cmdline;
2174 Location loc;
2175 QTAILQ_ENTRY(device_config) next;
2176 };
2177
2178 static QTAILQ_HEAD(, device_config) device_configs =
2179 QTAILQ_HEAD_INITIALIZER(device_configs);
2180
2181 static void add_device_config(int type, const char *cmdline)
2182 {
2183 struct device_config *conf;
2184
2185 conf = g_malloc0(sizeof(*conf));
2186 conf->type = type;
2187 conf->cmdline = cmdline;
2188 loc_save(&conf->loc);
2189 QTAILQ_INSERT_TAIL(&device_configs, conf, next);
2190 }
2191
2192 static int foreach_device_config(int type, int (*func)(const char *cmdline))
2193 {
2194 struct device_config *conf;
2195 int rc;
2196
2197 QTAILQ_FOREACH(conf, &device_configs, next) {
2198 if (conf->type != type)
2199 continue;
2200 loc_push_restore(&conf->loc);
2201 rc = func(conf->cmdline);
2202 loc_pop(&conf->loc);
2203 if (rc) {
2204 return rc;
2205 }
2206 }
2207 return 0;
2208 }
2209
2210 static int serial_parse(const char *devname)
2211 {
2212 int index = num_serial_hds;
2213 char label[32];
2214
2215 if (strcmp(devname, "none") == 0)
2216 return 0;
2217 snprintf(label, sizeof(label), "serial%d", index);
2218 serial_hds = g_renew(Chardev *, serial_hds, index + 1);
2219
2220 serial_hds[index] = qemu_chr_new_mux_mon(label, devname, NULL);
2221 if (!serial_hds[index]) {
2222 error_report("could not connect serial device"
2223 " to character backend '%s'", devname);
2224 return -1;
2225 }
2226 num_serial_hds++;
2227 return 0;
2228 }
2229
2230 Chardev *serial_hd(int i)
2231 {
2232 assert(i >= 0);
2233 if (i < num_serial_hds) {
2234 return serial_hds[i];
2235 }
2236 return NULL;
2237 }
2238
2239 int serial_max_hds(void)
2240 {
2241 return num_serial_hds;
2242 }
2243
2244 static int parallel_parse(const char *devname)
2245 {
2246 static int index = 0;
2247 char label[32];
2248
2249 if (strcmp(devname, "none") == 0)
2250 return 0;
2251 if (index == MAX_PARALLEL_PORTS) {
2252 error_report("too many parallel ports");
2253 exit(1);
2254 }
2255 snprintf(label, sizeof(label), "parallel%d", index);
2256 parallel_hds[index] = qemu_chr_new_mux_mon(label, devname, NULL);
2257 if (!parallel_hds[index]) {
2258 error_report("could not connect parallel device"
2259 " to character backend '%s'", devname);
2260 return -1;
2261 }
2262 index++;
2263 return 0;
2264 }
2265
2266 static int debugcon_parse(const char *devname)
2267 {
2268 QemuOpts *opts;
2269
2270 if (!qemu_chr_new_mux_mon("debugcon", devname, NULL)) {
2271 error_report("invalid character backend '%s'", devname);
2272 exit(1);
2273 }
2274 opts = qemu_opts_create(qemu_find_opts("device"), "debugcon", 1, NULL);
2275 if (!opts) {
2276 error_report("already have a debugcon device");
2277 exit(1);
2278 }
2279 qemu_opt_set(opts, "driver", "isa-debugcon", &error_abort);
2280 qemu_opt_set(opts, "chardev", "debugcon", &error_abort);
2281 return 0;
2282 }
2283
2284 static gint machine_class_cmp(gconstpointer a, gconstpointer b)
2285 {
2286 const MachineClass *mc1 = a, *mc2 = b;
2287 int res;
2288
2289 if (mc1->family == NULL) {
2290 if (mc2->family == NULL) {
2291 /* Compare standalone machine types against each other; they sort
2292 * in increasing order.
2293 */
2294 return strcmp(object_class_get_name(OBJECT_CLASS(mc1)),
2295 object_class_get_name(OBJECT_CLASS(mc2)));
2296 }
2297
2298 /* Standalone machine types sort after families. */
2299 return 1;
2300 }
2301
2302 if (mc2->family == NULL) {
2303 /* Families sort before standalone machine types. */
2304 return -1;
2305 }
2306
2307 /* Families sort between each other alphabetically increasingly. */
2308 res = strcmp(mc1->family, mc2->family);
2309 if (res != 0) {
2310 return res;
2311 }
2312
2313 /* Within the same family, machine types sort in decreasing order. */
2314 return strcmp(object_class_get_name(OBJECT_CLASS(mc2)),
2315 object_class_get_name(OBJECT_CLASS(mc1)));
2316 }
2317
2318 static MachineClass *machine_parse(const char *name, GSList *machines)
2319 {
2320 MachineClass *mc;
2321 GSList *el;
2322
2323 if (is_help_option(name)) {
2324 printf("Supported machines are:\n");
2325 machines = g_slist_sort(machines, machine_class_cmp);
2326 for (el = machines; el; el = el->next) {
2327 MachineClass *mc = el->data;
2328 if (mc->alias) {
2329 printf("%-20s %s (alias of %s)\n", mc->alias, mc->desc, mc->name);
2330 }
2331 printf("%-20s %s%s%s\n", mc->name, mc->desc,
2332 mc->is_default ? " (default)" : "",
2333 mc->deprecation_reason ? " (deprecated)" : "");
2334 }
2335 exit(0);
2336 }
2337
2338 mc = find_machine(name, machines);
2339 if (!mc) {
2340 error_report("unsupported machine type");
2341 error_printf("Use -machine help to list supported machines\n");
2342 exit(1);
2343 }
2344 return mc;
2345 }
2346
2347 void qemu_add_exit_notifier(Notifier *notify)
2348 {
2349 notifier_list_add(&exit_notifiers, notify);
2350 }
2351
2352 void qemu_remove_exit_notifier(Notifier *notify)
2353 {
2354 notifier_remove(notify);
2355 }
2356
2357 static void qemu_run_exit_notifiers(void)
2358 {
2359 notifier_list_notify(&exit_notifiers, NULL);
2360 }
2361
2362 static const char *pid_file;
2363 static Notifier qemu_unlink_pidfile_notifier;
2364
2365 static void qemu_unlink_pidfile(Notifier *n, void *data)
2366 {
2367 if (pid_file) {
2368 unlink(pid_file);
2369 }
2370 }
2371
2372 bool machine_init_done;
2373
2374 void qemu_add_machine_init_done_notifier(Notifier *notify)
2375 {
2376 notifier_list_add(&machine_init_done_notifiers, notify);
2377 if (machine_init_done) {
2378 notify->notify(notify, NULL);
2379 }
2380 }
2381
2382 void qemu_remove_machine_init_done_notifier(Notifier *notify)
2383 {
2384 notifier_remove(notify);
2385 }
2386
2387 static void qemu_run_machine_init_done_notifiers(void)
2388 {
2389 machine_init_done = true;
2390 notifier_list_notify(&machine_init_done_notifiers, NULL);
2391 }
2392
2393 static const QEMUOption *lookup_opt(int argc, char **argv,
2394 const char **poptarg, int *poptind)
2395 {
2396 const QEMUOption *popt;
2397 int optind = *poptind;
2398 char *r = argv[optind];
2399 const char *optarg;
2400
2401 loc_set_cmdline(argv, optind, 1);
2402 optind++;
2403 /* Treat --foo the same as -foo. */
2404 if (r[1] == '-')
2405 r++;
2406 popt = qemu_options;
2407 for(;;) {
2408 if (!popt->name) {
2409 error_report("invalid option");
2410 exit(1);
2411 }
2412 if (!strcmp(popt->name, r + 1))
2413 break;
2414 popt++;
2415 }
2416 if (popt->flags & HAS_ARG) {
2417 if (optind >= argc) {
2418 error_report("requires an argument");
2419 exit(1);
2420 }
2421 optarg = argv[optind++];
2422 loc_set_cmdline(argv, optind - 2, 2);
2423 } else {
2424 optarg = NULL;
2425 }
2426
2427 *poptarg = optarg;
2428 *poptind = optind;
2429
2430 return popt;
2431 }
2432
2433 static MachineClass *select_machine(void)
2434 {
2435 GSList *machines = object_class_get_list(TYPE_MACHINE, false);
2436 MachineClass *machine_class = find_default_machine(machines);
2437 const char *optarg;
2438 QemuOpts *opts;
2439 Location loc;
2440
2441 loc_push_none(&loc);
2442
2443 opts = qemu_get_machine_opts();
2444 qemu_opts_loc_restore(opts);
2445
2446 optarg = qemu_opt_get(opts, "type");
2447 if (optarg) {
2448 machine_class = machine_parse(optarg, machines);
2449 }
2450
2451 if (!machine_class) {
2452 error_report("No machine specified, and there is no default");
2453 error_printf("Use -machine help to list supported machines\n");
2454 exit(1);
2455 }
2456
2457 loc_pop(&loc);
2458 g_slist_free(machines);
2459 return machine_class;
2460 }
2461
2462 static int object_parse_property_opt(Object *obj,
2463 const char *name, const char *value,
2464 const char *skip, Error **errp)
2465 {
2466 if (g_str_equal(name, skip)) {
2467 return 0;
2468 }
2469
2470 if (!object_property_parse(obj, name, value, errp)) {
2471 return -1;
2472 }
2473
2474 return 0;
2475 }
2476
2477 static int machine_set_property(void *opaque,
2478 const char *name, const char *value,
2479 Error **errp)
2480 {
2481 g_autofree char *qom_name = g_strdup(name);
2482 char *p;
2483
2484 for (p = qom_name; *p; p++) {
2485 if (*p == '_') {
2486 *p = '-';
2487 }
2488 }
2489
2490 /* Legacy options do not correspond to MachineState properties. */
2491 if (g_str_equal(qom_name, "accel")) {
2492 return 0;
2493 }
2494 if (g_str_equal(qom_name, "igd-passthru")) {
2495 object_register_sugar_prop(ACCEL_CLASS_NAME("xen"), qom_name, value);
2496 return 0;
2497 }
2498 if (g_str_equal(qom_name, "kvm-shadow-mem") ||
2499 g_str_equal(qom_name, "kernel-irqchip")) {
2500 object_register_sugar_prop(ACCEL_CLASS_NAME("kvm"), qom_name, value);
2501 return 0;
2502 }
2503
2504 return object_parse_property_opt(opaque, name, value, "type", errp);
2505 }
2506
2507 /*
2508 * Initial object creation happens before all other
2509 * QEMU data types are created. The majority of objects
2510 * can be created at this point. The rng-egd object
2511 * cannot be created here, as it depends on the chardev
2512 * already existing.
2513 */
2514 static bool object_create_initial(const char *type, QemuOpts *opts)
2515 {
2516 if (user_creatable_print_help(type, opts)) {
2517 exit(0);
2518 }
2519
2520 /*
2521 * Objects should not be made "delayed" without a reason. If you
2522 * add one, state the reason in a comment!
2523 */
2524
2525 /* Reason: rng-egd property "chardev" */
2526 if (g_str_equal(type, "rng-egd")) {
2527 return false;
2528 }
2529
2530 #if defined(CONFIG_VHOST_USER) && defined(CONFIG_LINUX)
2531 /* Reason: cryptodev-vhost-user property "chardev" */
2532 if (g_str_equal(type, "cryptodev-vhost-user")) {
2533 return false;
2534 }
2535 #endif
2536
2537 /*
2538 * Reason: filter-* property "netdev" etc.
2539 */
2540 if (g_str_equal(type, "filter-buffer") ||
2541 g_str_equal(type, "filter-dump") ||
2542 g_str_equal(type, "filter-mirror") ||
2543 g_str_equal(type, "filter-redirector") ||
2544 g_str_equal(type, "colo-compare") ||
2545 g_str_equal(type, "filter-rewriter") ||
2546 g_str_equal(type, "filter-replay")) {
2547 return false;
2548 }
2549
2550 /* Memory allocation by backends needs to be done
2551 * after configure_accelerator() (due to the tcg_enabled()
2552 * checks at memory_region_init_*()).
2553 *
2554 * Also, allocation of large amounts of memory may delay
2555 * chardev initialization for too long, and trigger timeouts
2556 * on software that waits for a monitor socket to be created
2557 * (e.g. libvirt).
2558 */
2559 if (g_str_has_prefix(type, "memory-backend-")) {
2560 return false;
2561 }
2562
2563 return true;
2564 }
2565
2566
2567 /*
2568 * The remainder of object creation happens after the
2569 * creation of chardev, fsdev, net clients and device data types.
2570 */
2571 static bool object_create_delayed(const char *type, QemuOpts *opts)
2572 {
2573 return !object_create_initial(type, opts);
2574 }
2575
2576
2577 static bool set_memory_options(uint64_t *ram_slots, ram_addr_t *maxram_size,
2578 MachineClass *mc)
2579 {
2580 uint64_t sz;
2581 const char *mem_str;
2582 const ram_addr_t default_ram_size = mc->default_ram_size;
2583 QemuOpts *opts = qemu_find_opts_singleton("memory");
2584 Location loc;
2585
2586 loc_push_none(&loc);
2587 qemu_opts_loc_restore(opts);
2588
2589 sz = 0;
2590 mem_str = qemu_opt_get(opts, "size");
2591 if (mem_str) {
2592 if (!*mem_str) {
2593 error_report("missing 'size' option value");
2594 exit(EXIT_FAILURE);
2595 }
2596
2597 sz = qemu_opt_get_size(opts, "size", ram_size);
2598
2599 /* Fix up legacy suffix-less format */
2600 if (g_ascii_isdigit(mem_str[strlen(mem_str) - 1])) {
2601 uint64_t overflow_check = sz;
2602
2603 sz *= MiB;
2604 if (sz / MiB != overflow_check) {
2605 error_report("too large 'size' option value");
2606 exit(EXIT_FAILURE);
2607 }
2608 }
2609 }
2610
2611 /* backward compatibility behaviour for case "-m 0" */
2612 if (sz == 0) {
2613 sz = default_ram_size;
2614 }
2615
2616 sz = QEMU_ALIGN_UP(sz, 8192);
2617 if (mc->fixup_ram_size) {
2618 sz = mc->fixup_ram_size(sz);
2619 }
2620 ram_size = sz;
2621 if (ram_size != sz) {
2622 error_report("ram size too large");
2623 exit(EXIT_FAILURE);
2624 }
2625
2626 /* store value for the future use */
2627 qemu_opt_set_number(opts, "size", ram_size, &error_abort);
2628 *maxram_size = ram_size;
2629
2630 if (qemu_opt_get(opts, "maxmem")) {
2631 uint64_t slots;
2632
2633 sz = qemu_opt_get_size(opts, "maxmem", 0);
2634 slots = qemu_opt_get_number(opts, "slots", 0);
2635 if (sz < ram_size) {
2636 error_report("invalid value of -m option maxmem: "
2637 "maximum memory size (0x%" PRIx64 ") must be at least "
2638 "the initial memory size (0x" RAM_ADDR_FMT ")",
2639 sz, ram_size);
2640 exit(EXIT_FAILURE);
2641 } else if (slots && sz == ram_size) {
2642 error_report("invalid value of -m option maxmem: "
2643 "memory slots were specified but maximum memory size "
2644 "(0x%" PRIx64 ") is equal to the initial memory size "
2645 "(0x" RAM_ADDR_FMT ")", sz, ram_size);
2646 exit(EXIT_FAILURE);
2647 }
2648
2649 *maxram_size = sz;
2650 *ram_slots = slots;
2651 } else if (qemu_opt_get(opts, "slots")) {
2652 error_report("invalid -m option value: missing 'maxmem' option");
2653 exit(EXIT_FAILURE);
2654 }
2655
2656 loc_pop(&loc);
2657 return !!mem_str;
2658 }
2659
2660 static int global_init_func(void *opaque, QemuOpts *opts, Error **errp)
2661 {
2662 GlobalProperty *g;
2663
2664 g = g_malloc0(sizeof(*g));
2665 g->driver = qemu_opt_get(opts, "driver");
2666 g->property = qemu_opt_get(opts, "property");
2667 g->value = qemu_opt_get(opts, "value");
2668 qdev_prop_register_global(g);
2669 return 0;
2670 }
2671
2672 static int qemu_read_default_config_file(void)
2673 {
2674 int ret;
2675
2676 ret = qemu_read_config_file(CONFIG_QEMU_CONFDIR "/qemu.conf");
2677 if (ret < 0 && ret != -ENOENT) {
2678 return ret;
2679 }
2680
2681 return 0;
2682 }
2683
2684 static void user_register_global_props(void)
2685 {
2686 qemu_opts_foreach(qemu_find_opts("global"),
2687 global_init_func, NULL, NULL);
2688 }
2689
2690 static int do_configure_icount(void *opaque, QemuOpts *opts, Error **errp)
2691 {
2692 configure_icount(opts, errp);
2693 return 0;
2694 }
2695
2696 static int accelerator_set_property(void *opaque,
2697 const char *name, const char *value,
2698 Error **errp)
2699 {
2700 return object_parse_property_opt(opaque, name, value, "accel", errp);
2701 }
2702
2703 static int do_configure_accelerator(void *opaque, QemuOpts *opts, Error **errp)
2704 {
2705 bool *p_init_failed = opaque;
2706 const char *acc = qemu_opt_get(opts, "accel");
2707 AccelClass *ac = accel_find(acc);
2708 AccelState *accel;
2709 int ret;
2710
2711 if (!ac) {
2712 *p_init_failed = true;
2713 error_report("invalid accelerator %s", acc);
2714 return 0;
2715 }
2716 accel = ACCEL(object_new_with_class(OBJECT_CLASS(ac)));
2717 object_apply_compat_props(OBJECT(accel));
2718 qemu_opt_foreach(opts, accelerator_set_property,
2719 accel,
2720 &error_fatal);
2721
2722 ret = accel_init_machine(accel, current_machine);
2723 if (ret < 0) {
2724 *p_init_failed = true;
2725 error_report("failed to initialize %s: %s",
2726 acc, strerror(-ret));
2727 return 0;
2728 }
2729
2730 return 1;
2731 }
2732
2733 static void configure_accelerators(const char *progname)
2734 {
2735 const char *accel;
2736 bool init_failed = false;
2737
2738 qemu_opts_foreach(qemu_find_opts("icount"),
2739 do_configure_icount, NULL, &error_fatal);
2740
2741 accel = qemu_opt_get(qemu_get_machine_opts(), "accel");
2742 if (QTAILQ_EMPTY(&qemu_accel_opts.head)) {
2743 char **accel_list, **tmp;
2744
2745 if (accel == NULL) {
2746 /* Select the default accelerator */
2747 bool have_tcg = accel_find("tcg");
2748 bool have_kvm = accel_find("kvm");
2749
2750 if (have_tcg && have_kvm) {
2751 if (g_str_has_suffix(progname, "kvm")) {
2752 /* If the program name ends with "kvm", we prefer KVM */
2753 accel = "kvm:tcg";
2754 } else {
2755 accel = "tcg:kvm";
2756 }
2757 } else if (have_kvm) {
2758 accel = "kvm";
2759 } else if (have_tcg) {
2760 accel = "tcg";
2761 } else {
2762 error_report("No accelerator selected and"
2763 " no default accelerator available");
2764 exit(1);
2765 }
2766 }
2767 accel_list = g_strsplit(accel, ":", 0);
2768
2769 for (tmp = accel_list; *tmp; tmp++) {
2770 /*
2771 * Filter invalid accelerators here, to prevent obscenities
2772 * such as "-machine accel=tcg,,thread=single".
2773 */
2774 if (accel_find(*tmp)) {
2775 qemu_opts_parse_noisily(qemu_find_opts("accel"), *tmp, true);
2776 } else {
2777 init_failed = true;
2778 error_report("invalid accelerator %s", *tmp);
2779 }
2780 }
2781 g_strfreev(accel_list);
2782 } else {
2783 if (accel != NULL) {
2784 error_report("The -accel and \"-machine accel=\" options are incompatible");
2785 exit(1);
2786 }
2787 }
2788
2789 if (!qemu_opts_foreach(qemu_find_opts("accel"),
2790 do_configure_accelerator, &init_failed, &error_fatal)) {
2791 if (!init_failed) {
2792 error_report("no accelerator found");
2793 }
2794 exit(1);
2795 }
2796
2797 if (init_failed) {
2798 AccelClass *ac = ACCEL_GET_CLASS(current_accel());
2799 error_report("falling back to %s", ac->name);
2800 }
2801
2802 if (use_icount && !(tcg_enabled() || qtest_enabled())) {
2803 error_report("-icount is not allowed with hardware virtualization");
2804 exit(1);
2805 }
2806 }
2807
2808 static void create_default_memdev(MachineState *ms, const char *path)
2809 {
2810 Object *obj;
2811 MachineClass *mc = MACHINE_GET_CLASS(ms);
2812
2813 obj = object_new(path ? TYPE_MEMORY_BACKEND_FILE : TYPE_MEMORY_BACKEND_RAM);
2814 if (path) {
2815 object_property_set_str(obj, "mem-path", path, &error_fatal);
2816 }
2817 object_property_set_int(obj, "size", ms->ram_size, &error_fatal);
2818 object_property_add_child(object_get_objects_root(), mc->default_ram_id,
2819 obj);
2820 /* Ensure backend's memory region name is equal to mc->default_ram_id */
2821 object_property_set_bool(obj, "x-use-canonical-path-for-ramblock-id",
2822 false, &error_fatal);
2823 user_creatable_complete(USER_CREATABLE(obj), &error_fatal);
2824 object_unref(obj);
2825 object_property_set_str(OBJECT(ms), "memory-backend", mc->default_ram_id,
2826 &error_fatal);
2827 }
2828
2829 void qemu_init(int argc, char **argv, char **envp)
2830 {
2831 int i;
2832 int snapshot, linux_boot;
2833 const char *initrd_filename;
2834 const char *kernel_filename, *kernel_cmdline;
2835 const char *boot_order = NULL;
2836 const char *boot_once = NULL;
2837 DisplayState *ds;
2838 QemuOpts *opts, *machine_opts;
2839 QemuOpts *icount_opts = NULL, *accel_opts = NULL;
2840 QemuOptsList *olist;
2841 int optind;
2842 const char *optarg;
2843 const char *loadvm = NULL;
2844 MachineClass *machine_class;
2845 const char *cpu_option;
2846 const char *vga_model = NULL;
2847 const char *qtest_chrdev = NULL;
2848 const char *qtest_log = NULL;
2849 const char *incoming = NULL;
2850 bool userconfig = true;
2851 bool nographic = false;
2852 int display_remote = 0;
2853 const char *log_mask = NULL;
2854 const char *log_file = NULL;
2855 char *trace_file = NULL;
2856 ram_addr_t maxram_size;
2857 uint64_t ram_slots = 0;
2858 FILE *vmstate_dump_file = NULL;
2859 Error *main_loop_err = NULL;
2860 Error *err = NULL;
2861 bool list_data_dirs = false;
2862 char *dir, **dirs;
2863 const char *mem_path = NULL;
2864 bool have_custom_ram_size;
2865 BlockdevOptionsQueue bdo_queue = QSIMPLEQ_HEAD_INITIALIZER(bdo_queue);
2866 QemuPluginList plugin_list = QTAILQ_HEAD_INITIALIZER(plugin_list);
2867 int mem_prealloc = 0; /* force preallocation of physical target memory */
2868
2869 os_set_line_buffering();
2870
2871 error_init(argv[0]);
2872 module_call_init(MODULE_INIT_TRACE);
2873
2874 qemu_init_cpu_list();
2875 qemu_init_cpu_loop();
2876
2877 qemu_mutex_lock_iothread();
2878
2879 atexit(qemu_run_exit_notifiers);
2880 qemu_init_exec_dir(argv[0]);
2881
2882 module_call_init(MODULE_INIT_QOM);
2883 module_call_init(MODULE_INIT_MIGRATION);
2884
2885 qemu_add_opts(&qemu_drive_opts);
2886 qemu_add_drive_opts(&qemu_legacy_drive_opts);
2887 qemu_add_drive_opts(&qemu_common_drive_opts);
2888 qemu_add_drive_opts(&qemu_drive_opts);
2889 qemu_add_drive_opts(&bdrv_runtime_opts);
2890 qemu_add_opts(&qemu_chardev_opts);
2891 qemu_add_opts(&qemu_device_opts);
2892 qemu_add_opts(&qemu_netdev_opts);
2893 qemu_add_opts(&qemu_nic_opts);
2894 qemu_add_opts(&qemu_net_opts);
2895 qemu_add_opts(&qemu_rtc_opts);
2896 qemu_add_opts(&qemu_global_opts);
2897 qemu_add_opts(&qemu_mon_opts);
2898 qemu_add_opts(&qemu_trace_opts);
2899 qemu_plugin_add_opts();
2900 qemu_add_opts(&qemu_option_rom_opts);
2901 qemu_add_opts(&qemu_machine_opts);
2902 qemu_add_opts(&qemu_accel_opts);
2903 qemu_add_opts(&qemu_mem_opts);
2904 qemu_add_opts(&qemu_smp_opts);
2905 qemu_add_opts(&qemu_boot_opts);
2906 qemu_add_opts(&qemu_add_fd_opts);
2907 qemu_add_opts(&qemu_object_opts);
2908 qemu_add_opts(&qemu_tpmdev_opts);
2909 qemu_add_opts(&qemu_realtime_opts);
2910 qemu_add_opts(&qemu_overcommit_opts);
2911 qemu_add_opts(&qemu_msg_opts);
2912 qemu_add_opts(&qemu_name_opts);
2913 qemu_add_opts(&qemu_numa_opts);
2914 qemu_add_opts(&qemu_icount_opts);
2915 qemu_add_opts(&qemu_semihosting_config_opts);
2916 qemu_add_opts(&qemu_fw_cfg_opts);
2917 module_call_init(MODULE_INIT_OPTS);
2918
2919 runstate_init();
2920 precopy_infrastructure_init();
2921 postcopy_infrastructure_init();
2922 monitor_init_globals();
2923
2924 if (qcrypto_init(&err) < 0) {
2925 error_reportf_err(err, "cannot initialize crypto: ");
2926 exit(1);
2927 }
2928
2929 QTAILQ_INIT(&vm_change_state_head);
2930 os_setup_early_signal_handling();
2931
2932 cpu_option = NULL;
2933 snapshot = 0;
2934
2935 nb_nics = 0;
2936
2937 bdrv_init_with_whitelist();
2938
2939 autostart = 1;
2940
2941 /* first pass of option parsing */
2942 optind = 1;
2943 while (optind < argc) {
2944 if (argv[optind][0] != '-') {
2945 /* disk image */
2946 optind++;
2947 } else {
2948 const QEMUOption *popt;
2949
2950 popt = lookup_opt(argc, argv, &optarg, &optind);
2951 switch (popt->index) {
2952 case QEMU_OPTION_nouserconfig:
2953 userconfig = false;
2954 break;
2955 }
2956 }
2957 }
2958
2959 if (userconfig) {
2960 if (qemu_read_default_config_file() < 0) {
2961 exit(1);
2962 }
2963 }
2964
2965 /* second pass of option parsing */
2966 optind = 1;
2967 for(;;) {
2968 if (optind >= argc)
2969 break;
2970 if (argv[optind][0] != '-') {
2971 loc_set_cmdline(argv, optind, 1);
2972 drive_add(IF_DEFAULT, 0, argv[optind++], HD_OPTS);
2973 } else {
2974 const QEMUOption *popt;
2975
2976 popt = lookup_opt(argc, argv, &optarg, &optind);
2977 if (!(popt->arch_mask & arch_type)) {
2978 error_report("Option not supported for this target");
2979 exit(1);
2980 }
2981 switch(popt->index) {
2982 case QEMU_OPTION_cpu:
2983 /* hw initialization will check this */
2984 cpu_option = optarg;
2985 break;
2986 case QEMU_OPTION_hda:
2987 case QEMU_OPTION_hdb:
2988 case QEMU_OPTION_hdc:
2989 case QEMU_OPTION_hdd:
2990 drive_add(IF_DEFAULT, popt->index - QEMU_OPTION_hda, optarg,
2991 HD_OPTS);
2992 break;
2993 case QEMU_OPTION_blockdev:
2994 {
2995 Visitor *v;
2996 BlockdevOptionsQueueEntry *bdo;
2997
2998 v = qobject_input_visitor_new_str(optarg, "driver",
2999 &error_fatal);
3000
3001 bdo = g_new(BlockdevOptionsQueueEntry, 1);
3002 visit_type_BlockdevOptions(v, NULL, &bdo->bdo,
3003 &error_fatal);
3004 visit_free(v);
3005 loc_save(&bdo->loc);
3006 QSIMPLEQ_INSERT_TAIL(&bdo_queue, bdo, entry);
3007 break;
3008 }
3009 case QEMU_OPTION_drive:
3010 if (drive_def(optarg) == NULL) {
3011 exit(1);
3012 }
3013 break;
3014 case QEMU_OPTION_set:
3015 if (qemu_set_option(optarg) != 0)
3016 exit(1);
3017 break;
3018 case QEMU_OPTION_global:
3019 if (qemu_global_option(optarg) != 0)
3020 exit(1);
3021 break;
3022 case QEMU_OPTION_mtdblock:
3023 drive_add(IF_MTD, -1, optarg, MTD_OPTS);
3024 break;
3025 case QEMU_OPTION_sd:
3026 drive_add(IF_SD, -1, optarg, SD_OPTS);
3027 break;
3028 case QEMU_OPTION_pflash:
3029 drive_add(IF_PFLASH, -1, optarg, PFLASH_OPTS);
3030 break;
3031 case QEMU_OPTION_snapshot:
3032 {
3033 Error *blocker = NULL;
3034 snapshot = 1;
3035 error_setg(&blocker, QERR_REPLAY_NOT_SUPPORTED,
3036 "-snapshot");
3037 replay_add_blocker(blocker);
3038 }
3039 break;
3040 case QEMU_OPTION_numa:
3041 opts = qemu_opts_parse_noisily(qemu_find_opts("numa"),
3042 optarg, true);
3043 if (!opts) {
3044 exit(1);
3045 }
3046 break;
3047 case QEMU_OPTION_display:
3048 parse_display(optarg);
3049 break;
3050 case QEMU_OPTION_nographic:
3051 olist = qemu_find_opts("machine");
3052 qemu_opts_parse_noisily(olist, "graphics=off", false);
3053 nographic = true;
3054 dpy.type = DISPLAY_TYPE_NONE;
3055 break;
3056 case QEMU_OPTION_curses:
3057 #ifdef CONFIG_CURSES
3058 dpy.type = DISPLAY_TYPE_CURSES;
3059 #else
3060 error_report("curses or iconv support is disabled");
3061 exit(1);
3062 #endif
3063 break;
3064 case QEMU_OPTION_portrait:
3065 graphic_rotate = 90;
3066 break;
3067 case QEMU_OPTION_rotate:
3068 graphic_rotate = strtol(optarg, (char **) &optarg, 10);
3069 if (graphic_rotate != 0 && graphic_rotate != 90 &&
3070 graphic_rotate != 180 && graphic_rotate != 270) {
3071 error_report("only 90, 180, 270 deg rotation is available");
3072 exit(1);
3073 }
3074 break;
3075 case QEMU_OPTION_kernel:
3076 qemu_opts_set(qemu_find_opts("machine"), NULL, "kernel", optarg,
3077 &error_abort);
3078 break;
3079 case QEMU_OPTION_initrd:
3080 qemu_opts_set(qemu_find_opts("machine"), NULL, "initrd", optarg,
3081 &error_abort);
3082 break;
3083 case QEMU_OPTION_append:
3084 qemu_opts_set(qemu_find_opts("machine"), NULL, "append", optarg,
3085 &error_abort);
3086 break;
3087 case QEMU_OPTION_dtb:
3088 qemu_opts_set(qemu_find_opts("machine"), NULL, "dtb", optarg,
3089 &error_abort);
3090 break;
3091 case QEMU_OPTION_cdrom:
3092 drive_add(IF_DEFAULT, 2, optarg, CDROM_OPTS);
3093 break;
3094 case QEMU_OPTION_boot:
3095 opts = qemu_opts_parse_noisily(qemu_find_opts("boot-opts"),
3096 optarg, true);
3097 if (!opts) {
3098 exit(1);
3099 }
3100 break;
3101 case QEMU_OPTION_fda:
3102 case QEMU_OPTION_fdb:
3103 drive_add(IF_FLOPPY, popt->index - QEMU_OPTION_fda,
3104 optarg, FD_OPTS);
3105 break;
3106 case QEMU_OPTION_no_fd_bootchk:
3107 fd_bootchk = 0;
3108 break;
3109 case QEMU_OPTION_netdev:
3110 default_net = 0;
3111 if (net_client_parse(qemu_find_opts("netdev"), optarg) == -1) {
3112 exit(1);
3113 }
3114 break;
3115 case QEMU_OPTION_nic:
3116 default_net = 0;
3117 if (net_client_parse(qemu_find_opts("nic"), optarg) == -1) {
3118 exit(1);
3119 }
3120 break;
3121 case QEMU_OPTION_net:
3122 default_net = 0;
3123 if (net_client_parse(qemu_find_opts("net"), optarg) == -1) {
3124 exit(1);
3125 }
3126 break;
3127 #ifdef CONFIG_LIBISCSI
3128 case QEMU_OPTION_iscsi:
3129 opts = qemu_opts_parse_noisily(qemu_find_opts("iscsi"),
3130 optarg, false);
3131 if (!opts) {
3132 exit(1);
3133 }
3134 break;
3135 #endif
3136 case QEMU_OPTION_audio_help:
3137 audio_legacy_help();
3138 exit (0);
3139 break;
3140 case QEMU_OPTION_audiodev:
3141 audio_parse_option(optarg);
3142 break;
3143 case QEMU_OPTION_soundhw:
3144 select_soundhw (optarg);
3145 break;
3146 case QEMU_OPTION_h:
3147 help(0);
3148 break;
3149 case QEMU_OPTION_version:
3150 version();
3151 exit(0);
3152 break;
3153 case QEMU_OPTION_m:
3154 opts = qemu_opts_parse_noisily(qemu_find_opts("memory"),
3155 optarg, true);
3156 if (!opts) {
3157 exit(EXIT_FAILURE);
3158 }
3159 break;
3160 #ifdef CONFIG_TPM
3161 case QEMU_OPTION_tpmdev:
3162 if (tpm_config_parse(qemu_find_opts("tpmdev"), optarg) < 0) {
3163 exit(1);
3164 }
3165 break;
3166 #endif
3167 case QEMU_OPTION_mempath:
3168 mem_path = optarg;
3169 break;
3170 case QEMU_OPTION_mem_prealloc:
3171 mem_prealloc = 1;
3172 break;
3173 case QEMU_OPTION_d:
3174 log_mask = optarg;
3175 break;
3176 case QEMU_OPTION_D:
3177 log_file = optarg;
3178 break;
3179 case QEMU_OPTION_DFILTER:
3180 qemu_set_dfilter_ranges(optarg, &error_fatal);
3181 break;
3182 case QEMU_OPTION_seed:
3183 qemu_guest_random_seed_main(optarg, &error_fatal);
3184 break;
3185 case QEMU_OPTION_s:
3186 add_device_config(DEV_GDB, "tcp::" DEFAULT_GDBSTUB_PORT);
3187 break;
3188 case QEMU_OPTION_gdb:
3189 add_device_config(DEV_GDB, optarg);
3190 break;
3191 case QEMU_OPTION_L:
3192 if (is_help_option(optarg)) {
3193 list_data_dirs = true;
3194 } else {
3195 qemu_add_data_dir(optarg);
3196 }
3197 break;
3198 case QEMU_OPTION_bios:
3199 qemu_opts_set(qemu_find_opts("machine"), NULL, "firmware", optarg,
3200 &error_abort);
3201 break;
3202 case QEMU_OPTION_singlestep:
3203 singlestep = 1;
3204 break;
3205 case QEMU_OPTION_S:
3206 autostart = 0;
3207 break;
3208 case QEMU_OPTION_k:
3209 keyboard_layout = optarg;
3210 break;
3211 case QEMU_OPTION_vga:
3212 vga_model = optarg;
3213 default_vga = 0;
3214 break;
3215 case QEMU_OPTION_g:
3216 {
3217 const char *p;
3218 int w, h, depth;
3219 p = optarg;
3220 w = strtol(p, (char **)&p, 10);
3221 if (w <= 0) {
3222 graphic_error:
3223 error_report("invalid resolution or depth");
3224 exit(1);
3225 }
3226 if (*p != 'x')
3227 goto graphic_error;
3228 p++;
3229 h = strtol(p, (char **)&p, 10);
3230 if (h <= 0)
3231 goto graphic_error;
3232 if (*p == 'x') {
3233 p++;
3234 depth = strtol(p, (char **)&p, 10);
3235 if (depth != 1 && depth != 2 && depth != 4 &&
3236 depth != 8 && depth != 15 && depth != 16 &&
3237 depth != 24 && depth != 32)
3238 goto graphic_error;
3239 } else if (*p == '\0') {
3240 depth = graphic_depth;
3241 } else {
3242 goto graphic_error;
3243 }
3244
3245 graphic_width = w;
3246 graphic_height = h;
3247 graphic_depth = depth;
3248 }
3249 break;
3250 case QEMU_OPTION_echr:
3251 {
3252 char *r;
3253 term_escape_char = strtol(optarg, &r, 0);
3254 if (r == optarg)
3255 printf("Bad argument to echr\n");
3256 break;
3257 }
3258 case QEMU_OPTION_monitor:
3259 default_monitor = 0;
3260 if (strncmp(optarg, "none", 4)) {
3261 monitor_parse(optarg, "readline", false);
3262 }
3263 break;
3264 case QEMU_OPTION_qmp:
3265 monitor_parse(optarg, "control", false);
3266 default_monitor = 0;
3267 break;
3268 case QEMU_OPTION_qmp_pretty:
3269 monitor_parse(optarg, "control", true);
3270 default_monitor = 0;
3271 break;
3272 case QEMU_OPTION_mon:
3273 opts = qemu_opts_parse_noisily(qemu_find_opts("mon"), optarg,
3274 true);
3275 if (!opts) {
3276 exit(1);
3277 }
3278 default_monitor = 0;
3279 break;
3280 case QEMU_OPTION_chardev:
3281 opts = qemu_opts_parse_noisily(qemu_find_opts("chardev"),
3282 optarg, true);
3283 if (!opts) {
3284 exit(1);
3285 }
3286 break;
3287 case QEMU_OPTION_fsdev:
3288 olist = qemu_find_opts("fsdev");
3289 if (!olist) {
3290 error_report("fsdev support is disabled");
3291 exit(1);
3292 }
3293 opts = qemu_opts_parse_noisily(olist, optarg, true);
3294 if (!opts) {
3295 exit(1);
3296 }
3297 break;
3298 case QEMU_OPTION_virtfs: {
3299 QemuOpts *fsdev;
3300 QemuOpts *device;
3301 const char *writeout, *sock_fd, *socket, *path, *security_model,
3302 *multidevs;
3303
3304 olist = qemu_find_opts("virtfs");
3305 if (!olist) {
3306 error_report("virtfs support is disabled");
3307 exit(1);
3308 }
3309 opts = qemu_opts_parse_noisily(olist, optarg, true);
3310 if (!opts) {
3311 exit(1);
3312 }
3313
3314 if (qemu_opt_get(opts, "fsdriver") == NULL ||
3315 qemu_opt_get(opts, "mount_tag") == NULL) {
3316 error_report("Usage: -virtfs fsdriver,mount_tag=tag");
3317 exit(1);
3318 }
3319 fsdev = qemu_opts_create(qemu_find_opts("fsdev"),
3320 qemu_opts_id(opts) ?:
3321 qemu_opt_get(opts, "mount_tag"),
3322 1, NULL);
3323 if (!fsdev) {
3324 error_report("duplicate or invalid fsdev id: %s",
3325 qemu_opt_get(opts, "mount_tag"));
3326 exit(1);
3327 }
3328
3329 writeout = qemu_opt_get(opts, "writeout");
3330 if (writeout) {
3331 #ifdef CONFIG_SYNC_FILE_RANGE
3332 qemu_opt_set(fsdev, "writeout", writeout, &error_abort);
3333 #else
3334 error_report("writeout=immediate not supported "
3335 "on this platform");
3336 exit(1);
3337 #endif
3338 }
3339 qemu_opt_set(fsdev, "fsdriver",
3340 qemu_opt_get(opts, "fsdriver"), &error_abort);
3341 path = qemu_opt_get(opts, "path");
3342 if (path) {
3343 qemu_opt_set(fsdev, "path", path, &error_abort);
3344 }
3345 security_model = qemu_opt_get(opts, "security_model");
3346 if (security_model) {
3347 qemu_opt_set(fsdev, "security_model", security_model,
3348 &error_abort);
3349 }
3350 socket = qemu_opt_get(opts, "socket");
3351 if (socket) {
3352 qemu_opt_set(fsdev, "socket", socket, &error_abort);
3353 }
3354 sock_fd = qemu_opt_get(opts, "sock_fd");
3355 if (sock_fd) {
3356 qemu_opt_set(fsdev, "sock_fd", sock_fd, &error_abort);
3357 }
3358
3359 qemu_opt_set_bool(fsdev, "readonly",
3360 qemu_opt_get_bool(opts, "readonly", 0),
3361 &error_abort);
3362 multidevs = qemu_opt_get(opts, "multidevs");
3363 if (multidevs) {
3364 qemu_opt_set(fsdev, "multidevs", multidevs, &error_abort);
3365 }
3366 device = qemu_opts_create(qemu_find_opts("device"), NULL, 0,
3367 &error_abort);
3368 qemu_opt_set(device, "driver", "virtio-9p-pci", &error_abort);
3369 qemu_opt_set(device, "fsdev",
3370 qemu_opts_id(fsdev), &error_abort);
3371 qemu_opt_set(device, "mount_tag",
3372 qemu_opt_get(opts, "mount_tag"), &error_abort);
3373 break;
3374 }
3375 case QEMU_OPTION_serial:
3376 add_device_config(DEV_SERIAL, optarg);
3377 default_serial = 0;
3378 if (strncmp(optarg, "mon:", 4) == 0) {
3379 default_monitor = 0;
3380 }
3381 break;
3382 case QEMU_OPTION_watchdog:
3383 if (watchdog) {
3384 error_report("only one watchdog option may be given");
3385 exit(1);
3386 }
3387 watchdog = optarg;
3388 break;
3389 case QEMU_OPTION_watchdog_action:
3390 if (select_watchdog_action(optarg) == -1) {
3391 error_report("unknown -watchdog-action parameter");
3392 exit(1);
3393 }
3394 break;
3395 case QEMU_OPTION_parallel:
3396 add_device_config(DEV_PARALLEL, optarg);
3397 default_parallel = 0;
3398 if (strncmp(optarg, "mon:", 4) == 0) {
3399 default_monitor = 0;
3400 }
3401 break;
3402 case QEMU_OPTION_debugcon:
3403 add_device_config(DEV_DEBUGCON, optarg);
3404 break;
3405 case QEMU_OPTION_loadvm:
3406 loadvm = optarg;
3407 break;
3408 case QEMU_OPTION_full_screen:
3409 dpy.has_full_screen = true;
3410 dpy.full_screen = true;
3411 break;
3412 case QEMU_OPTION_alt_grab:
3413 alt_grab = 1;
3414 break;
3415 case QEMU_OPTION_ctrl_grab:
3416 ctrl_grab = 1;
3417 break;
3418 case QEMU_OPTION_no_quit:
3419 dpy.has_window_close = true;
3420 dpy.window_close = false;
3421 break;
3422 case QEMU_OPTION_sdl:
3423 #ifdef CONFIG_SDL
3424 dpy.type = DISPLAY_TYPE_SDL;
3425 break;
3426 #else
3427 error_report("SDL support is disabled");
3428 exit(1);
3429 #endif
3430 case QEMU_OPTION_pidfile:
3431 pid_file = optarg;
3432 break;
3433 case QEMU_OPTION_win2k_hack:
3434 win2k_install_hack = 1;
3435 break;
3436 case QEMU_OPTION_acpitable:
3437 opts = qemu_opts_parse_noisily(qemu_find_opts("acpi"),
3438 optarg, true);
3439 if (!opts) {
3440 exit(1);
3441 }
3442 acpi_table_add(opts, &error_fatal);
3443 break;
3444 case QEMU_OPTION_smbios:
3445 opts = qemu_opts_parse_noisily(qemu_find_opts("smbios"),
3446 optarg, false);
3447 if (!opts) {
3448 exit(1);
3449 }
3450 smbios_entry_add(opts, &error_fatal);
3451 break;
3452 case QEMU_OPTION_fwcfg:
3453 opts = qemu_opts_parse_noisily(qemu_find_opts("fw_cfg"),
3454 optarg, true);
3455 if (opts == NULL) {
3456 exit(1);
3457 }
3458 break;
3459 case QEMU_OPTION_preconfig:
3460 preconfig_exit_requested = false;
3461 break;
3462 case QEMU_OPTION_enable_kvm:
3463 olist = qemu_find_opts("machine");
3464 qemu_opts_parse_noisily(olist, "accel=kvm", false);
3465 break;
3466 case QEMU_OPTION_M:
3467 case QEMU_OPTION_machine:
3468 olist = qemu_find_opts("machine");
3469 opts = qemu_opts_parse_noisily(olist, optarg, true);
3470 if (!opts) {
3471 exit(1);
3472 }
3473 break;
3474 case QEMU_OPTION_no_kvm:
3475 olist = qemu_find_opts("machine");
3476 qemu_opts_parse_noisily(olist, "accel=tcg", false);
3477 break;
3478 case QEMU_OPTION_accel:
3479 accel_opts = qemu_opts_parse_noisily(qemu_find_opts("accel"),
3480 optarg, true);
3481 optarg = qemu_opt_get(accel_opts, "accel");
3482 if (!optarg || is_help_option(optarg)) {
3483 printf("Accelerators supported in QEMU binary:\n");
3484 GSList *el, *accel_list = object_class_get_list(TYPE_ACCEL,
3485 false);
3486 for (el = accel_list; el; el = el->next) {
3487 gchar *typename = g_strdup(object_class_get_name(
3488 OBJECT_CLASS(el->data)));
3489 /* omit qtest which is used for tests only */
3490 if (g_strcmp0(typename, ACCEL_CLASS_NAME("qtest")) &&
3491 g_str_has_suffix(typename, ACCEL_CLASS_SUFFIX)) {
3492 gchar **optname = g_strsplit(typename,
3493 ACCEL_CLASS_SUFFIX, 0);
3494 printf("%s\n", optname[0]);
3495 g_strfreev(optname);
3496 }
3497 g_free(typename);
3498 }
3499 g_slist_free(accel_list);
3500 exit(0);
3501 }
3502 if (optarg && strchr(optarg, ':')) {
3503 error_report("Don't use ':' with -accel, "
3504 "use -M accel=... for now instead");
3505 exit(1);
3506 }
3507 break;
3508 case QEMU_OPTION_usb:
3509 olist = qemu_find_opts("machine");
3510 qemu_opts_parse_noisily(olist, "usb=on", false);
3511 break;
3512 case QEMU_OPTION_usbdevice:
3513 error_report("'-usbdevice' is deprecated, please use "
3514 "'-device usb-...' instead");
3515 olist = qemu_find_opts("machine");
3516 qemu_opts_parse_noisily(olist, "usb=on", false);
3517 add_device_config(DEV_USB, optarg);
3518 break;
3519 case QEMU_OPTION_device:
3520 if (!qemu_opts_parse_noisily(qemu_find_opts("device"),
3521 optarg, true)) {
3522 exit(1);
3523 }
3524 break;
3525 case QEMU_OPTION_smp:
3526 if (!qemu_opts_parse_noisily(qemu_find_opts("smp-opts"),
3527 optarg, true)) {
3528 exit(1);
3529 }
3530 break;
3531 case QEMU_OPTION_vnc:
3532 vnc_parse(optarg, &error_fatal);
3533 break;
3534 case QEMU_OPTION_no_acpi:
3535 olist = qemu_find_opts("machine");
3536 qemu_opts_parse_noisily(olist, "acpi=off", false);
3537 break;
3538 case QEMU_OPTION_no_hpet:
3539 no_hpet = 1;
3540 break;
3541 case QEMU_OPTION_no_reboot:
3542 no_reboot = 1;
3543 break;
3544 case QEMU_OPTION_no_shutdown:
3545 no_shutdown = 1;
3546 break;
3547 case QEMU_OPTION_show_cursor:
3548 warn_report("The -show-cursor option is deprecated. Please "
3549 "add show-cursor=on to your -display options.");
3550 warn_report("When using the default display you can use "
3551 "-display default,show-cursor=on");
3552 dpy.has_show_cursor = true;
3553 dpy.show_cursor = true;
3554 break;
3555 case QEMU_OPTION_uuid:
3556 if (qemu_uuid_parse(optarg, &qemu_uuid) < 0) {
3557 error_report("failed to parse UUID string: wrong format");
3558 exit(1);
3559 }
3560 qemu_uuid_set = true;
3561 break;
3562 case QEMU_OPTION_option_rom:
3563 if (nb_option_roms >= MAX_OPTION_ROMS) {
3564 error_report("too many option ROMs");
3565 exit(1);
3566 }
3567 opts = qemu_opts_parse_noisily(qemu_find_opts("option-rom"),
3568 optarg, true);
3569 if (!opts) {
3570 exit(1);
3571 }
3572 option_rom[nb_option_roms].name = qemu_opt_get(opts, "romfile");
3573 option_rom[nb_option_roms].bootindex =
3574 qemu_opt_get_number(opts, "bootindex", -1);
3575 if (!option_rom[nb_option_roms].name) {
3576 error_report("Option ROM file is not specified");
3577 exit(1);
3578 }
3579 nb_option_roms++;
3580 break;
3581 case QEMU_OPTION_semihosting:
3582 qemu_semihosting_enable();
3583 break;
3584 case QEMU_OPTION_semihosting_config:
3585 if (qemu_semihosting_config_options(optarg) != 0) {
3586 exit(1);
3587 }
3588 break;
3589 case QEMU_OPTION_name:
3590 opts = qemu_opts_parse_noisily(qemu_find_opts("name"),
3591 optarg, true);
3592 if (!opts) {
3593 exit(1);
3594 }
3595 break;
3596 case QEMU_OPTION_prom_env:
3597 if (nb_prom_envs >= MAX_PROM_ENVS) {
3598 error_report("too many prom variables");
3599 exit(1);
3600 }
3601 prom_envs[nb_prom_envs] = optarg;
3602 nb_prom_envs++;
3603 break;
3604 case QEMU_OPTION_old_param:
3605 old_param = 1;
3606 break;
3607 case QEMU_OPTION_rtc:
3608 opts = qemu_opts_parse_noisily(qemu_find_opts("rtc"), optarg,
3609 false);
3610 if (!opts) {
3611 exit(1);
3612 }
3613 break;
3614 case QEMU_OPTION_tb_size:
3615 #ifndef CONFIG_TCG
3616 error_report("TCG is disabled");
3617 exit(1);
3618 #endif
3619 warn_report("The -tb-size option is deprecated, use -accel tcg,tb-size instead");
3620 object_register_sugar_prop(ACCEL_CLASS_NAME("tcg"), "tb-size", optarg);
3621 break;
3622 case QEMU_OPTION_icount:
3623 icount_opts = qemu_opts_parse_noisily(qemu_find_opts("icount"),
3624 optarg, true);
3625 if (!icount_opts) {
3626 exit(1);
3627 }
3628 break;
3629 case QEMU_OPTION_incoming:
3630 if (!incoming) {
3631 runstate_set(RUN_STATE_INMIGRATE);
3632 }
3633 incoming = optarg;
3634 break;
3635 case QEMU_OPTION_only_migratable:
3636 only_migratable = 1;
3637 break;
3638 case QEMU_OPTION_nodefaults:
3639 has_defaults = 0;
3640 break;
3641 case QEMU_OPTION_xen_domid:
3642 if (!(xen_available())) {
3643 error_report("Option not supported for this target");
3644 exit(1);
3645 }
3646 xen_domid = atoi(optarg);
3647 break;
3648 case QEMU_OPTION_xen_attach:
3649 if (!(xen_available())) {
3650 error_report("Option not supported for this target");
3651 exit(1);
3652 }
3653 xen_mode = XEN_ATTACH;
3654 break;
3655 case QEMU_OPTION_xen_domid_restrict:
3656 if (!(xen_available())) {
3657 error_report("Option not supported for this target");
3658 exit(1);
3659 }
3660 xen_domid_restrict = true;
3661 break;
3662 case QEMU_OPTION_trace:
3663 g_free(trace_file);
3664 trace_file = trace_opt_parse(optarg);
3665 break;
3666 case QEMU_OPTION_plugin:
3667 qemu_plugin_opt_parse(optarg, &plugin_list);
3668 break;
3669 case QEMU_OPTION_readconfig:
3670 {
3671 int ret = qemu_read_config_file(optarg);
3672 if (ret < 0) {
3673 error_report("read config %s: %s", optarg,
3674 strerror(-ret));
3675 exit(1);
3676 }
3677 break;
3678 }
3679 case QEMU_OPTION_spice:
3680 olist = qemu_find_opts("spice");
3681 if (!olist) {
3682 error_report("spice support is disabled");
3683 exit(1);
3684 }
3685 opts = qemu_opts_parse_noisily(olist, optarg, false);
3686 if (!opts) {
3687 exit(1);
3688 }
3689 display_remote++;
3690 break;
3691 case QEMU_OPTION_writeconfig:
3692 {
3693 FILE *fp;
3694 if (strcmp(optarg, "-") == 0) {
3695 fp = stdout;
3696 } else {
3697 fp = fopen(optarg, "w");
3698 if (fp == NULL) {
3699 error_report("open %s: %s", optarg,
3700 strerror(errno));
3701 exit(1);
3702 }
3703 }
3704 qemu_config_write(fp);
3705 if (fp != stdout) {
3706 fclose(fp);
3707 }
3708 break;
3709 }
3710 case QEMU_OPTION_qtest:
3711 qtest_chrdev = optarg;
3712 break;
3713 case QEMU_OPTION_qtest_log:
3714 qtest_log = optarg;
3715 break;
3716 case QEMU_OPTION_sandbox:
3717 olist = qemu_find_opts("sandbox");
3718 if (!olist) {
3719 #ifndef CONFIG_SECCOMP
3720 error_report("-sandbox support is not enabled "
3721 "in this QEMU binary");
3722 #endif
3723 exit(1);
3724 }
3725
3726 opts = qemu_opts_parse_noisily(olist, optarg, true);
3727 if (!opts) {
3728 exit(1);
3729 }
3730 break;
3731 case QEMU_OPTION_add_fd:
3732 #ifndef _WIN32
3733 opts = qemu_opts_parse_noisily(qemu_find_opts("add-fd"),
3734 optarg, false);
3735 if (!opts) {
3736 exit(1);
3737 }
3738 #else
3739 error_report("File descriptor passing is disabled on this "
3740 "platform");
3741 exit(1);
3742 #endif
3743 break;
3744 case QEMU_OPTION_object:
3745 opts = qemu_opts_parse_noisily(qemu_find_opts("object"),
3746 optarg, true);
3747 if (!opts) {
3748 exit(1);
3749 }
3750 break;
3751 case QEMU_OPTION_realtime:
3752 warn_report("'-realtime mlock=...' is deprecated, please use "
3753 "'-overcommit mem-lock=...' instead");
3754 opts = qemu_opts_parse_noisily(qemu_find_opts("realtime"),
3755 optarg, false);
3756 if (!opts) {
3757 exit(1);
3758 }
3759 /* Don't override the -overcommit option if set */
3760 enable_mlock = enable_mlock ||
3761 qemu_opt_get_bool(opts, "mlock", true);
3762 break;
3763 case QEMU_OPTION_overcommit:
3764 opts = qemu_opts_parse_noisily(qemu_find_opts("overcommit"),
3765 optarg, false);
3766 if (!opts) {
3767 exit(1);
3768 }
3769 /* Don't override the -realtime option if set */
3770 enable_mlock = enable_mlock ||
3771 qemu_opt_get_bool(opts, "mem-lock", false);
3772 enable_cpu_pm = qemu_opt_get_bool(opts, "cpu-pm", false);
3773 break;
3774 case QEMU_OPTION_msg:
3775 opts = qemu_opts_parse_noisily(qemu_find_opts("msg"), optarg,
3776 false);
3777 if (!opts) {
3778 exit(1);
3779 }
3780 configure_msg(opts);
3781 break;
3782 case QEMU_OPTION_dump_vmstate:
3783 if (vmstate_dump_file) {
3784 error_report("only one '-dump-vmstate' "
3785 "option may be given");
3786 exit(1);
3787 }
3788 vmstate_dump_file = fopen(optarg, "w");
3789 if (vmstate_dump_file == NULL) {
3790 error_report("open %s: %s", optarg, strerror(errno));
3791 exit(1);
3792 }
3793 break;
3794 case QEMU_OPTION_enable_sync_profile:
3795 qsp_enable();
3796 break;
3797 case QEMU_OPTION_nouserconfig:
3798 /* Nothing to be parsed here. Especially, do not error out below. */
3799 break;
3800 default:
3801 if (os_parse_cmd_args(popt->index, optarg)) {
3802 error_report("Option not supported in this build");
3803 exit(1);
3804 }
3805 }
3806 }
3807 }
3808 /*
3809 * Clear error location left behind by the loop.
3810 * Best done right after the loop. Do not insert code here!
3811 */
3812 loc_set_none();
3813
3814 /*
3815 * Check for -cpu help and -device help before we call select_machine(),
3816 * which will return an error if the architecture has no default machine
3817 * type and the user did not specify one, so that the user doesn't need
3818 * to say '-cpu help -machine something'.
3819 */
3820 if (cpu_option && is_help_option(cpu_option)) {
3821 list_cpus(cpu_option);
3822 exit(0);
3823 }
3824
3825 if (qemu_opts_foreach(qemu_find_opts("device"),
3826 device_help_func, NULL, NULL)) {
3827 exit(0);
3828 }
3829
3830 user_register_global_props();
3831
3832 replay_configure(icount_opts);
3833
3834 if (incoming && !preconfig_exit_requested) {
3835 error_report("'preconfig' and 'incoming' options are "
3836 "mutually exclusive");
3837 exit(EXIT_FAILURE);
3838 }
3839
3840 configure_rtc(qemu_find_opts_singleton("rtc"));
3841
3842 machine_class = select_machine();
3843 object_set_machine_compat_props(machine_class->compat_props);
3844
3845 have_custom_ram_size = set_memory_options(&ram_slots, &maxram_size,
3846 machine_class);
3847
3848 os_daemonize();
3849 rcu_disable_atfork();
3850
3851 if (pid_file && !qemu_write_pidfile(pid_file, &err)) {
3852 error_reportf_err(err, "cannot create PID file: ");
3853 exit(1);
3854 }
3855
3856 qemu_unlink_pidfile_notifier.notify = qemu_unlink_pidfile;
3857 qemu_add_exit_notifier(&qemu_unlink_pidfile_notifier);
3858
3859 if (qemu_init_main_loop(&main_loop_err)) {
3860 error_report_err(main_loop_err);
3861 exit(1);
3862 }
3863
3864 #ifdef CONFIG_SECCOMP
3865 olist = qemu_find_opts_err("sandbox", NULL);
3866 if (olist) {
3867 qemu_opts_foreach(olist, parse_sandbox, NULL, &error_fatal);
3868 }
3869 #endif
3870
3871 qemu_opts_foreach(qemu_find_opts("name"),
3872 parse_name, NULL, &error_fatal);
3873
3874 #ifndef _WIN32
3875 qemu_opts_foreach(qemu_find_opts("add-fd"),
3876 parse_add_fd, NULL, &error_fatal);
3877
3878 qemu_opts_foreach(qemu_find_opts("add-fd"),
3879 cleanup_add_fd, NULL, &error_fatal);
3880 #endif
3881
3882 current_machine = MACHINE(object_new_with_class(OBJECT_CLASS(machine_class)));
3883 if (machine_help_func(qemu_get_machine_opts(), current_machine)) {
3884 exit(0);
3885 }
3886 object_property_add_child(object_get_root(), "machine",
3887 OBJECT(current_machine));
3888 object_property_add_child(container_get(OBJECT(current_machine),
3889 "/unattached"),
3890 "sysbus", OBJECT(sysbus_get_default()));
3891
3892 if (machine_class->minimum_page_bits) {
3893 if (!set_preferred_target_page_bits(machine_class->minimum_page_bits)) {
3894 /* This would be a board error: specifying a minimum smaller than
3895 * a target's compile-time fixed setting.
3896 */
3897 g_assert_not_reached();
3898 }
3899 }
3900
3901 cpu_exec_init_all();
3902
3903 if (machine_class->hw_version) {
3904 qemu_set_hw_version(machine_class->hw_version);
3905 }
3906
3907 if (!trace_init_backends()) {
3908 exit(1);
3909 }
3910 trace_init_file(trace_file);
3911
3912 /* Open the logfile at this point and set the log mask if necessary.
3913 */
3914 qemu_set_log_filename(log_file, &error_fatal);
3915 if (log_mask) {
3916 int mask;
3917 mask = qemu_str_to_log_mask(log_mask);
3918 if (!mask) {
3919 qemu_print_log_usage(stdout);
3920 exit(1);
3921 }
3922 qemu_set_log(mask);
3923 } else {
3924 qemu_set_log(0);
3925 }
3926
3927 /* add configured firmware directories */
3928 dirs = g_strsplit(CONFIG_QEMU_FIRMWAREPATH, G_SEARCHPATH_SEPARATOR_S, 0);
3929 for (i = 0; dirs[i] != NULL; i++) {
3930 qemu_add_data_dir(dirs[i]);
3931 }
3932 g_strfreev(dirs);
3933
3934 /* try to find datadir relative to the executable path */
3935 dir = os_find_datadir();
3936 qemu_add_data_dir(dir);
3937 g_free(dir);
3938
3939 /* add the datadir specified when building */
3940 qemu_add_data_dir(CONFIG_QEMU_DATADIR);
3941
3942 /* -L help lists the data directories and exits. */
3943 if (list_data_dirs) {
3944 for (i = 0; i < data_dir_idx; i++) {
3945 printf("%s\n", data_dir[i]);
3946 }
3947 exit(0);
3948 }
3949
3950 /* machine_class: default to UP */
3951 machine_class->max_cpus = machine_class->max_cpus ?: 1;
3952 machine_class->min_cpus = machine_class->min_cpus ?: 1;
3953 machine_class->default_cpus = machine_class->default_cpus ?: 1;
3954
3955 /* default to machine_class->default_cpus */
3956 current_machine->smp.cpus = machine_class->default_cpus;
3957 current_machine->smp.max_cpus = machine_class->default_cpus;
3958 current_machine->smp.cores = 1;
3959 current_machine->smp.threads = 1;
3960 current_machine->smp.sockets = 1;
3961
3962 machine_class->smp_parse(current_machine,
3963 qemu_opts_find(qemu_find_opts("smp-opts"), NULL));
3964
3965 /* sanity-check smp_cpus and max_cpus against machine_class */
3966 if (current_machine->smp.cpus < machine_class->min_cpus) {
3967 error_report("Invalid SMP CPUs %d. The min CPUs "
3968 "supported by machine '%s' is %d",
3969 current_machine->smp.cpus,
3970 machine_class->name, machine_class->min_cpus);
3971 exit(1);
3972 }
3973 if (current_machine->smp.max_cpus > machine_class->max_cpus) {
3974 error_report("Invalid SMP CPUs %d. The max CPUs "
3975 "supported by machine '%s' is %d",
3976 current_machine->smp.max_cpus,
3977 machine_class->name, machine_class->max_cpus);
3978 exit(1);
3979 }
3980
3981 if (mem_prealloc) {
3982 char *val;
3983
3984 val = g_strdup_printf("%d", current_machine->smp.cpus);
3985 object_register_sugar_prop("memory-backend", "prealloc-threads", val);
3986 g_free(val);
3987 object_register_sugar_prop("memory-backend", "prealloc", "on");
3988 }
3989
3990 /*
3991 * Get the default machine options from the machine if it is not already
3992 * specified either by the configuration file or by the command line.
3993 */
3994 if (machine_class->default_machine_opts) {
3995 qemu_opts_set_defaults(qemu_find_opts("machine"),
3996 machine_class->default_machine_opts, 0);
3997 }
3998
3999 /* process plugin before CPUs are created, but once -smp has been parsed */
4000 if (qemu_plugin_load_list(&plugin_list)) {
4001 exit(1);
4002 }
4003
4004 qemu_opts_foreach(qemu_find_opts("device"),
4005 default_driver_check, NULL, NULL);
4006 qemu_opts_foreach(qemu_find_opts("global"),
4007 default_driver_check, NULL, NULL);
4008
4009 if (!vga_model && !default_vga) {
4010 vga_interface_type = VGA_DEVICE;
4011 }
4012 if (!has_defaults || machine_class->no_serial) {
4013 default_serial = 0;
4014 }
4015 if (!has_defaults || machine_class->no_parallel) {
4016 default_parallel = 0;
4017 }
4018 if (!has_defaults || machine_class->no_floppy) {
4019 default_floppy = 0;
4020 }
4021 if (!has_defaults || machine_class->no_cdrom) {
4022 default_cdrom = 0;
4023 }
4024 if (!has_defaults || machine_class->no_sdcard) {
4025 default_sdcard = 0;
4026 }
4027 if (!has_defaults) {
4028 default_monitor = 0;
4029 default_net = 0;
4030 default_vga = 0;
4031 }
4032
4033 if (is_daemonized()) {
4034 if (!preconfig_exit_requested) {
4035 error_report("'preconfig' and 'daemonize' options are "
4036 "mutually exclusive");
4037 exit(EXIT_FAILURE);
4038 }
4039
4040 /* According to documentation and historically, -nographic redirects
4041 * serial port, parallel port and monitor to stdio, which does not work
4042 * with -daemonize. We can redirect these to null instead, but since
4043 * -nographic is legacy, let's just error out.
4044 * We disallow -nographic only if all other ports are not redirected
4045 * explicitly, to not break existing legacy setups which uses
4046 * -nographic _and_ redirects all ports explicitly - this is valid
4047 * usage, -nographic is just a no-op in this case.
4048 */
4049 if (nographic
4050 && (default_parallel || default_serial || default_monitor)) {
4051 error_report("-nographic cannot be used with -daemonize");
4052 exit(1);
4053 }
4054 #ifdef CONFIG_CURSES
4055 if (dpy.type == DISPLAY_TYPE_CURSES) {
4056 error_report("curses display cannot be used with -daemonize");
4057 exit(1);
4058 }
4059 #endif
4060 }
4061
4062 if (nographic) {
4063 if (default_parallel)
4064 add_device_config(DEV_PARALLEL, "null");
4065 if (default_serial && default_monitor) {
4066 add_device_config(DEV_SERIAL, "mon:stdio");
4067 } else {
4068 if (default_serial)
4069 add_device_config(DEV_SERIAL, "stdio");
4070 if (default_monitor)
4071 monitor_parse("stdio", "readline", false);
4072 }
4073 } else {
4074 if (default_serial)
4075 add_device_config(DEV_SERIAL, "vc:80Cx24C");
4076 if (default_parallel)
4077 add_device_config(DEV_PARALLEL, "vc:80Cx24C");
4078 if (default_monitor)
4079 monitor_parse("vc:80Cx24C", "readline", false);
4080 }
4081
4082 #if defined(CONFIG_VNC)
4083 if (!QTAILQ_EMPTY(&(qemu_find_opts("vnc")->head))) {
4084 display_remote++;
4085 }
4086 #endif
4087 if (dpy.type == DISPLAY_TYPE_DEFAULT && !display_remote) {
4088 if (!qemu_display_find_default(&dpy)) {
4089 dpy.type = DISPLAY_TYPE_NONE;
4090 #if defined(CONFIG_VNC)
4091 vnc_parse("localhost:0,to=99,id=default", &error_abort);
4092 #endif
4093 }
4094 }
4095 if (dpy.type == DISPLAY_TYPE_DEFAULT) {
4096 dpy.type = DISPLAY_TYPE_NONE;
4097 }
4098
4099 if ((alt_grab || ctrl_grab) && dpy.type != DISPLAY_TYPE_SDL) {
4100 error_report("-alt-grab and -ctrl-grab are only valid "
4101 "for SDL, ignoring option");
4102 }
4103 if (dpy.has_window_close &&
4104 (dpy.type != DISPLAY_TYPE_GTK && dpy.type != DISPLAY_TYPE_SDL)) {
4105 error_report("-no-quit is only valid for GTK and SDL, "
4106 "ignoring option");
4107 }
4108
4109 qemu_display_early_init(&dpy);
4110 qemu_console_early_init();
4111
4112 if (dpy.has_gl && dpy.gl != DISPLAYGL_MODE_OFF && display_opengl == 0) {
4113 #if defined(CONFIG_OPENGL)
4114 error_report("OpenGL is not supported by the display");
4115 #else
4116 error_report("OpenGL support is disabled");
4117 #endif
4118 exit(1);
4119 }
4120
4121 page_size_init();
4122 socket_init();
4123
4124 qemu_opts_foreach(qemu_find_opts("object"),
4125 user_creatable_add_opts_foreach,
4126 object_create_initial, &error_fatal);
4127
4128 qemu_opts_foreach(qemu_find_opts("chardev"),
4129 chardev_init_func, NULL, &error_fatal);
4130 /* now chardevs have been created we may have semihosting to connect */
4131 qemu_semihosting_connect_chardevs();
4132
4133 #ifdef CONFIG_VIRTFS
4134 qemu_opts_foreach(qemu_find_opts("fsdev"),
4135 fsdev_init_func, NULL, &error_fatal);
4136 #endif
4137
4138 /* spice needs the timers to be initialized by this point */
4139 /* spice must initialize before audio as it changes the default auiodev */
4140 qemu_spice_init();
4141
4142 /*
4143 * Note: we need to create audio and block backends before
4144 * machine_set_property(), so machine properties can refer to
4145 * them.
4146 */
4147 configure_blockdev(&bdo_queue, machine_class, snapshot);
4148 audio_init_audiodevs();
4149
4150 machine_opts = qemu_get_machine_opts();
4151 qemu_opt_foreach(machine_opts, machine_set_property, current_machine,
4152 &error_fatal);
4153 current_machine->ram_size = ram_size;
4154 current_machine->maxram_size = maxram_size;
4155 current_machine->ram_slots = ram_slots;
4156
4157 /*
4158 * Note: uses machine properties such as kernel-irqchip, must run
4159 * after machine_set_property().
4160 */
4161 configure_accelerators(argv[0]);
4162
4163 /*
4164 * Beware, QOM objects created before this point miss global and
4165 * compat properties.
4166 *
4167 * Global properties get set up by qdev_prop_register_global(),
4168 * called from user_register_global_props(), and certain option
4169 * desugaring. Also in CPU feature desugaring (buried in
4170 * parse_cpu_option()), which happens below this point, but may
4171 * only target the CPU type, which can only be created after
4172 * parse_cpu_option() returned the type.
4173 *
4174 * Machine compat properties: object_set_machine_compat_props().
4175 * Accelerator compat props: object_set_accelerator_compat_props(),
4176 * called from configure_accelerator().
4177 */
4178
4179 if (!qtest_enabled() && machine_class->deprecation_reason) {
4180 error_report("Machine type '%s' is deprecated: %s",
4181 machine_class->name, machine_class->deprecation_reason);
4182 }
4183
4184 /*
4185 * Note: creates a QOM object, must run only after global and
4186 * compat properties have been set up.
4187 */
4188 migration_object_init();
4189
4190 if (qtest_chrdev) {
4191 qtest_server_init(qtest_chrdev, qtest_log, &error_fatal);
4192 }
4193
4194 machine_opts = qemu_get_machine_opts();
4195 kernel_filename = qemu_opt_get(machine_opts, "kernel");
4196 initrd_filename = qemu_opt_get(machine_opts, "initrd");
4197 kernel_cmdline = qemu_opt_get(machine_opts, "append");
4198 bios_name = qemu_opt_get(machine_opts, "firmware");
4199
4200 opts = qemu_opts_find(qemu_find_opts("boot-opts"), NULL);
4201 if (opts) {
4202 boot_order = qemu_opt_get(opts, "order");
4203 if (boot_order) {
4204 validate_bootdevices(boot_order, &error_fatal);
4205 }
4206
4207 boot_once = qemu_opt_get(opts, "once");
4208 if (boot_once) {
4209 validate_bootdevices(boot_once, &error_fatal);
4210 }
4211
4212 boot_menu = qemu_opt_get_bool(opts, "menu", boot_menu);
4213 boot_strict = qemu_opt_get_bool(opts, "strict", false);
4214 }
4215
4216 if (!boot_order) {
4217 boot_order = machine_class->default_boot_order;
4218 }
4219
4220 if (!kernel_cmdline) {
4221 kernel_cmdline = "";
4222 current_machine->kernel_cmdline = (char *)kernel_cmdline;
4223 }
4224
4225 linux_boot = (kernel_filename != NULL);
4226
4227 if (!linux_boot && *kernel_cmdline != '\0') {
4228 error_report("-append only allowed with -kernel option");
4229 exit(1);
4230 }
4231
4232 if (!linux_boot && initrd_filename != NULL) {
4233 error_report("-initrd only allowed with -kernel option");
4234 exit(1);
4235 }
4236
4237 if (semihosting_enabled() && !semihosting_get_argc() && kernel_filename) {
4238 /* fall back to the -kernel/-append */
4239 semihosting_arg_fallback(kernel_filename, kernel_cmdline);
4240 }
4241
4242 cpu_ticks_init();
4243
4244 if (default_net) {
4245 QemuOptsList *net = qemu_find_opts("net");
4246 qemu_opts_set(net, NULL, "type", "nic", &error_abort);
4247 #ifdef CONFIG_SLIRP
4248 qemu_opts_set(net, NULL, "type", "user", &error_abort);
4249 #endif
4250 }
4251
4252 if (net_init_clients(&err) < 0) {
4253 error_report_err(err);
4254 exit(1);
4255 }
4256
4257 qemu_opts_foreach(qemu_find_opts("object"),
4258 user_creatable_add_opts_foreach,
4259 object_create_delayed, &error_fatal);
4260
4261 tpm_init();
4262
4263 blk_mig_init();
4264 ram_mig_init();
4265 dirty_bitmap_mig_init();
4266
4267 qemu_opts_foreach(qemu_find_opts("mon"),
4268 mon_init_func, NULL, &error_fatal);
4269
4270 /* connect semihosting console input if requested */
4271 qemu_semihosting_console_init();
4272
4273 if (foreach_device_config(DEV_SERIAL, serial_parse) < 0)
4274 exit(1);
4275 if (foreach_device_config(DEV_PARALLEL, parallel_parse) < 0)
4276 exit(1);
4277 if (foreach_device_config(DEV_DEBUGCON, debugcon_parse) < 0)
4278 exit(1);
4279
4280 /* If no default VGA is requested, the default is "none". */
4281 if (default_vga) {
4282 vga_model = get_default_vga_model(machine_class);
4283 }
4284 if (vga_model) {
4285 select_vgahw(machine_class, vga_model);
4286 }
4287
4288 if (watchdog) {
4289 i = select_watchdog(watchdog);
4290 if (i > 0)
4291 exit (i == 1 ? 1 : 0);
4292 }
4293
4294 /* This checkpoint is required by replay to separate prior clock
4295 reading from the other reads, because timer polling functions query
4296 clock values from the log. */
4297 replay_checkpoint(CHECKPOINT_INIT);
4298 qdev_machine_init();
4299
4300 current_machine->boot_order = boot_order;
4301
4302 /* parse features once if machine provides default cpu_type */
4303 current_machine->cpu_type = machine_class->default_cpu_type;
4304 if (cpu_option) {
4305 current_machine->cpu_type = parse_cpu_option(cpu_option);
4306 }
4307
4308 if (current_machine->ram_memdev_id) {
4309 Object *backend;
4310 ram_addr_t backend_size;
4311
4312 backend = object_resolve_path_type(current_machine->ram_memdev_id,
4313 TYPE_MEMORY_BACKEND, NULL);
4314 if (!backend) {
4315 error_report("Memory backend '%s' not found",
4316 current_machine->ram_memdev_id);
4317 exit(EXIT_FAILURE);
4318 }
4319 backend_size = object_property_get_uint(backend, "size", &error_abort);
4320 if (have_custom_ram_size && backend_size != ram_size) {
4321 error_report("Size specified by -m option must match size of "
4322 "explicitly specified 'memory-backend' property");
4323 exit(EXIT_FAILURE);
4324 }
4325 if (mem_path) {
4326 error_report("'-mem-path' can't be used together with"
4327 "'-machine memory-backend'");
4328 exit(EXIT_FAILURE);
4329 }
4330 ram_size = backend_size;
4331 }
4332
4333 if (!xen_enabled()) {
4334 /* On 32-bit hosts, QEMU is limited by virtual address space */
4335 if (ram_size > (2047 << 20) && HOST_LONG_BITS == 32) {
4336 error_report("at most 2047 MB RAM can be simulated");
4337 exit(1);
4338 }
4339 }
4340
4341 parse_numa_opts(current_machine);
4342
4343 /* do monitor/qmp handling at preconfig state if requested */
4344 qemu_main_loop();
4345
4346 if (machine_class->default_ram_id && current_machine->ram_size &&
4347 numa_uses_legacy_mem() && !current_machine->ram_memdev_id) {
4348 create_default_memdev(current_machine, mem_path);
4349 }
4350
4351 /* from here on runstate is RUN_STATE_PRELAUNCH */
4352 machine_run_board_init(current_machine);
4353
4354 /*
4355 * TODO To drop support for deprecated bogus if=..., move
4356 * drive_check_orphaned() here, replacing this call. Also drop
4357 * its deprecation warning, along with DriveInfo member
4358 * @claimed_by_board.
4359 */
4360 drive_mark_claimed_by_board();
4361
4362 realtime_init();
4363
4364 soundhw_init();
4365
4366 if (hax_enabled()) {
4367 hax_sync_vcpus();
4368 }
4369
4370 qemu_opts_foreach(qemu_find_opts("fw_cfg"),
4371 parse_fw_cfg, fw_cfg_find(), &error_fatal);
4372
4373 /* init USB devices */
4374 if (machine_usb(current_machine)) {
4375 if (foreach_device_config(DEV_USB, usb_parse) < 0)
4376 exit(1);
4377 }
4378
4379 /* init generic devices */
4380 rom_set_order_override(FW_CFG_ORDER_OVERRIDE_DEVICE);
4381 qemu_opts_foreach(qemu_find_opts("device"),
4382 device_init_func, NULL, &error_fatal);
4383
4384 cpu_synchronize_all_post_init();
4385
4386 rom_reset_order_override();
4387
4388 /* Did we create any drives that we failed to create a device for? */
4389 drive_check_orphaned();
4390
4391 /* Don't warn about the default network setup that you get if
4392 * no command line -net or -netdev options are specified. There
4393 * are two cases that we would otherwise complain about:
4394 * (1) board doesn't support a NIC but the implicit "-net nic"
4395 * requested one
4396 * (2) CONFIG_SLIRP not set, in which case the implicit "-net nic"
4397 * sets up a nic that isn't connected to anything.
4398 */
4399 if (!default_net && (!qtest_enabled() || has_defaults)) {
4400 net_check_clients();
4401 }
4402
4403 if (boot_once) {
4404 qemu_boot_set(boot_once, &error_fatal);
4405 qemu_register_reset(restore_boot_order, g_strdup(boot_order));
4406 }
4407
4408 /* init local displays */
4409 ds = init_displaystate();
4410 qemu_display_init(ds, &dpy);
4411
4412 /* must be after terminal init, SDL library changes signal handlers */
4413 os_setup_signal_handling();
4414
4415 /* init remote displays */
4416 #ifdef CONFIG_VNC
4417 qemu_opts_foreach(qemu_find_opts("vnc"),
4418 vnc_init_func, NULL, &error_fatal);
4419 #endif
4420
4421 if (using_spice) {
4422 qemu_spice_display_init();
4423 }
4424
4425 if (foreach_device_config(DEV_GDB, gdbserver_start) < 0) {
4426 exit(1);
4427 }
4428
4429 qdev_machine_creation_done();
4430
4431 /* TODO: once all bus devices are qdevified, this should be done
4432 * when bus is created by qdev.c */
4433 /*
4434 * TODO: If we had a main 'reset container' that the whole system
4435 * lived in, we could reset that using the multi-phase reset
4436 * APIs. For the moment, we just reset the sysbus, which will cause
4437 * all devices hanging off it (and all their child buses, recursively)
4438 * to be reset. Note that this will *not* reset any Device objects
4439 * which are not attached to some part of the qbus tree!
4440 */
4441 qemu_register_reset(resettable_cold_reset_fn, sysbus_get_default());
4442 qemu_run_machine_init_done_notifiers();
4443
4444 if (rom_check_and_register_reset() != 0) {
4445 error_report("rom check and register reset failed");
4446 exit(1);
4447 }
4448
4449 replay_start();
4450
4451 /* This checkpoint is required by replay to separate prior clock
4452 reading from the other reads, because timer polling functions query
4453 clock values from the log. */
4454 replay_checkpoint(CHECKPOINT_RESET);
4455 qemu_system_reset(SHUTDOWN_CAUSE_NONE);
4456 register_global_state();
4457 if (loadvm) {
4458 Error *local_err = NULL;
4459 if (load_snapshot(loadvm, &local_err) < 0) {
4460 error_report_err(local_err);
4461 autostart = 0;
4462 exit(1);
4463 }
4464 }
4465 if (replay_mode != REPLAY_MODE_NONE) {
4466 replay_vmstate_init();
4467 }
4468
4469 qdev_prop_check_globals();
4470 if (vmstate_dump_file) {
4471 /* dump and exit */
4472 dump_vmstate_json_to_file(vmstate_dump_file);
4473 exit(0);
4474 }
4475
4476 if (incoming) {
4477 Error *local_err = NULL;
4478 qemu_start_incoming_migration(incoming, &local_err);
4479 if (local_err) {
4480 error_reportf_err(local_err, "-incoming %s: ", incoming);
4481 exit(1);
4482 }
4483 } else if (autostart) {
4484 vm_start();
4485 }
4486
4487 accel_setup_post(current_machine);
4488 os_setup_post();
4489
4490 return;
4491 }
4492
4493 void qemu_cleanup(void)
4494 {
4495 gdbserver_cleanup();
4496
4497 /*
4498 * cleaning up the migration object cancels any existing migration
4499 * try to do this early so that it also stops using devices.
4500 */
4501 migration_shutdown();
4502
4503 /*
4504 * We must cancel all block jobs while the block layer is drained,
4505 * or cancelling will be affected by throttling and thus may block
4506 * for an extended period of time.
4507 * vm_shutdown() will bdrv_drain_all(), so we may as well include
4508 * it in the drained section.
4509 * We do not need to end this section, because we do not want any
4510 * requests happening from here on anyway.
4511 */
4512 bdrv_drain_all_begin();
4513
4514 /* No more vcpu or device emulation activity beyond this point */
4515 vm_shutdown();
4516 replay_finish();
4517
4518 job_cancel_sync_all();
4519 bdrv_close_all();
4520
4521 res_free();
4522
4523 /* vhost-user must be cleaned up before chardevs. */
4524 tpm_cleanup();
4525 net_cleanup();
4526 audio_cleanup();
4527 monitor_cleanup();
4528 qemu_chr_cleanup();
4529 user_creatable_cleanup();
4530 /* TODO: unref root container, check all devices are ok */
4531 }
QEmu