qdev: Make functions taking Error ** return bool, not void
[qemu.git] / softmmu / vl.c
1 /*
2 * QEMU System Emulator
3 *
4 * Copyright (c) 2003-2008 Fabrice Bellard
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22 * THE SOFTWARE.
23 */
24
25 #include "qemu/osdep.h"
26 #include "qemu-common.h"
27 #include "qemu/units.h"
28 #include "hw/boards.h"
29 #include "hw/qdev-properties.h"
30 #include "qapi/error.h"
31 #include "qemu-version.h"
32 #include "qemu/cutils.h"
33 #include "qemu/help_option.h"
34 #include "qemu/uuid.h"
35 #include "sysemu/reset.h"
36 #include "sysemu/runstate.h"
37 #include "sysemu/seccomp.h"
38 #include "sysemu/tcg.h"
39 #include "sysemu/xen.h"
40
41 #include "qemu/error-report.h"
42 #include "qemu/sockets.h"
43 #include "sysemu/accel.h"
44 #include "hw/usb.h"
45 #include "hw/isa/isa.h"
46 #include "hw/scsi/scsi.h"
47 #include "hw/display/vga.h"
48 #include "sysemu/watchdog.h"
49 #include "hw/firmware/smbios.h"
50 #include "hw/acpi/acpi.h"
51 #include "hw/xen/xen.h"
52 #include "hw/loader.h"
53 #include "monitor/qdev.h"
54 #include "net/net.h"
55 #include "net/slirp.h"
56 #include "monitor/monitor.h"
57 #include "ui/console.h"
58 #include "ui/input.h"
59 #include "sysemu/sysemu.h"
60 #include "sysemu/numa.h"
61 #include "sysemu/hostmem.h"
62 #include "exec/gdbstub.h"
63 #include "qemu/timer.h"
64 #include "chardev/char.h"
65 #include "qemu/bitmap.h"
66 #include "qemu/log.h"
67 #include "sysemu/blockdev.h"
68 #include "hw/block/block.h"
69 #include "migration/misc.h"
70 #include "migration/snapshot.h"
71 #include "migration/global_state.h"
72 #include "sysemu/tpm.h"
73 #include "sysemu/dma.h"
74 #include "hw/audio/soundhw.h"
75 #include "audio/audio.h"
76 #include "sysemu/cpus.h"
77 #include "migration/colo.h"
78 #include "migration/postcopy-ram.h"
79 #include "sysemu/kvm.h"
80 #include "sysemu/hax.h"
81 #include "qapi/qobject-input-visitor.h"
82 #include "qemu/option.h"
83 #include "qemu/config-file.h"
84 #include "qemu-options.h"
85 #include "qemu/main-loop.h"
86 #ifdef CONFIG_VIRTFS
87 #include "fsdev/qemu-fsdev.h"
88 #endif
89 #include "sysemu/qtest.h"
90
91 #include "disas/disas.h"
92
93 #include "trace-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 Error *local_err = NULL;
2467
2468 if (g_str_equal(name, skip)) {
2469 return 0;
2470 }
2471
2472 if (!object_property_parse(obj, name, value, &local_err)) {
2473 error_propagate(errp, local_err);
2474 return -1;
2475 }
2476
2477 return 0;
2478 }
2479
2480 static int machine_set_property(void *opaque,
2481 const char *name, const char *value,
2482 Error **errp)
2483 {
2484 g_autofree char *qom_name = g_strdup(name);
2485 char *p;
2486
2487 for (p = qom_name; *p; p++) {
2488 if (*p == '_') {
2489 *p = '-';
2490 }
2491 }
2492
2493 /* Legacy options do not correspond to MachineState properties. */
2494 if (g_str_equal(qom_name, "accel")) {
2495 return 0;
2496 }
2497 if (g_str_equal(qom_name, "igd-passthru")) {
2498 object_register_sugar_prop(ACCEL_CLASS_NAME("xen"), qom_name, value);
2499 return 0;
2500 }
2501 if (g_str_equal(qom_name, "kvm-shadow-mem") ||
2502 g_str_equal(qom_name, "kernel-irqchip")) {
2503 object_register_sugar_prop(ACCEL_CLASS_NAME("kvm"), qom_name, value);
2504 return 0;
2505 }
2506
2507 return object_parse_property_opt(opaque, name, value, "type", errp);
2508 }
2509
2510 /*
2511 * Initial object creation happens before all other
2512 * QEMU data types are created. The majority of objects
2513 * can be created at this point. The rng-egd object
2514 * cannot be created here, as it depends on the chardev
2515 * already existing.
2516 */
2517 static bool object_create_initial(const char *type, QemuOpts *opts)
2518 {
2519 if (user_creatable_print_help(type, opts)) {
2520 exit(0);
2521 }
2522
2523 /*
2524 * Objects should not be made "delayed" without a reason. If you
2525 * add one, state the reason in a comment!
2526 */
2527
2528 /* Reason: rng-egd property "chardev" */
2529 if (g_str_equal(type, "rng-egd")) {
2530 return false;
2531 }
2532
2533 #if defined(CONFIG_VHOST_USER) && defined(CONFIG_LINUX)
2534 /* Reason: cryptodev-vhost-user property "chardev" */
2535 if (g_str_equal(type, "cryptodev-vhost-user")) {
2536 return false;
2537 }
2538 #endif
2539
2540 /*
2541 * Reason: filter-* property "netdev" etc.
2542 */
2543 if (g_str_equal(type, "filter-buffer") ||
2544 g_str_equal(type, "filter-dump") ||
2545 g_str_equal(type, "filter-mirror") ||
2546 g_str_equal(type, "filter-redirector") ||
2547 g_str_equal(type, "colo-compare") ||
2548 g_str_equal(type, "filter-rewriter") ||
2549 g_str_equal(type, "filter-replay")) {
2550 return false;
2551 }
2552
2553 /* Memory allocation by backends needs to be done
2554 * after configure_accelerator() (due to the tcg_enabled()
2555 * checks at memory_region_init_*()).
2556 *
2557 * Also, allocation of large amounts of memory may delay
2558 * chardev initialization for too long, and trigger timeouts
2559 * on software that waits for a monitor socket to be created
2560 * (e.g. libvirt).
2561 */
2562 if (g_str_has_prefix(type, "memory-backend-")) {
2563 return false;
2564 }
2565
2566 return true;
2567 }
2568
2569
2570 /*
2571 * The remainder of object creation happens after the
2572 * creation of chardev, fsdev, net clients and device data types.
2573 */
2574 static bool object_create_delayed(const char *type, QemuOpts *opts)
2575 {
2576 return !object_create_initial(type, opts);
2577 }
2578
2579
2580 static bool set_memory_options(uint64_t *ram_slots, ram_addr_t *maxram_size,
2581 MachineClass *mc)
2582 {
2583 uint64_t sz;
2584 const char *mem_str;
2585 const ram_addr_t default_ram_size = mc->default_ram_size;
2586 QemuOpts *opts = qemu_find_opts_singleton("memory");
2587 Location loc;
2588
2589 loc_push_none(&loc);
2590 qemu_opts_loc_restore(opts);
2591
2592 sz = 0;
2593 mem_str = qemu_opt_get(opts, "size");
2594 if (mem_str) {
2595 if (!*mem_str) {
2596 error_report("missing 'size' option value");
2597 exit(EXIT_FAILURE);
2598 }
2599
2600 sz = qemu_opt_get_size(opts, "size", ram_size);
2601
2602 /* Fix up legacy suffix-less format */
2603 if (g_ascii_isdigit(mem_str[strlen(mem_str) - 1])) {
2604 uint64_t overflow_check = sz;
2605
2606 sz *= MiB;
2607 if (sz / MiB != overflow_check) {
2608 error_report("too large 'size' option value");
2609 exit(EXIT_FAILURE);
2610 }
2611 }
2612 }
2613
2614 /* backward compatibility behaviour for case "-m 0" */
2615 if (sz == 0) {
2616 sz = default_ram_size;
2617 }
2618
2619 sz = QEMU_ALIGN_UP(sz, 8192);
2620 if (mc->fixup_ram_size) {
2621 sz = mc->fixup_ram_size(sz);
2622 }
2623 ram_size = sz;
2624 if (ram_size != sz) {
2625 error_report("ram size too large");
2626 exit(EXIT_FAILURE);
2627 }
2628
2629 /* store value for the future use */
2630 qemu_opt_set_number(opts, "size", ram_size, &error_abort);
2631 *maxram_size = ram_size;
2632
2633 if (qemu_opt_get(opts, "maxmem")) {
2634 uint64_t slots;
2635
2636 sz = qemu_opt_get_size(opts, "maxmem", 0);
2637 slots = qemu_opt_get_number(opts, "slots", 0);
2638 if (sz < ram_size) {
2639 error_report("invalid value of -m option maxmem: "
2640 "maximum memory size (0x%" PRIx64 ") must be at least "
2641 "the initial memory size (0x" RAM_ADDR_FMT ")",
2642 sz, ram_size);
2643 exit(EXIT_FAILURE);
2644 } else if (slots && sz == ram_size) {
2645 error_report("invalid value of -m option maxmem: "
2646 "memory slots were specified but maximum memory size "
2647 "(0x%" PRIx64 ") is equal to the initial memory size "
2648 "(0x" RAM_ADDR_FMT ")", sz, ram_size);
2649 exit(EXIT_FAILURE);
2650 }
2651
2652 *maxram_size = sz;
2653 *ram_slots = slots;
2654 } else if (qemu_opt_get(opts, "slots")) {
2655 error_report("invalid -m option value: missing 'maxmem' option");
2656 exit(EXIT_FAILURE);
2657 }
2658
2659 loc_pop(&loc);
2660 return !!mem_str;
2661 }
2662
2663 static int global_init_func(void *opaque, QemuOpts *opts, Error **errp)
2664 {
2665 GlobalProperty *g;
2666
2667 g = g_malloc0(sizeof(*g));
2668 g->driver = qemu_opt_get(opts, "driver");
2669 g->property = qemu_opt_get(opts, "property");
2670 g->value = qemu_opt_get(opts, "value");
2671 qdev_prop_register_global(g);
2672 return 0;
2673 }
2674
2675 static int qemu_read_default_config_file(void)
2676 {
2677 int ret;
2678
2679 ret = qemu_read_config_file(CONFIG_QEMU_CONFDIR "/qemu.conf");
2680 if (ret < 0 && ret != -ENOENT) {
2681 return ret;
2682 }
2683
2684 return 0;
2685 }
2686
2687 static void user_register_global_props(void)
2688 {
2689 qemu_opts_foreach(qemu_find_opts("global"),
2690 global_init_func, NULL, NULL);
2691 }
2692
2693 static int do_configure_icount(void *opaque, QemuOpts *opts, Error **errp)
2694 {
2695 configure_icount(opts, errp);
2696 return 0;
2697 }
2698
2699 static int accelerator_set_property(void *opaque,
2700 const char *name, const char *value,
2701 Error **errp)
2702 {
2703 return object_parse_property_opt(opaque, name, value, "accel", errp);
2704 }
2705
2706 static int do_configure_accelerator(void *opaque, QemuOpts *opts, Error **errp)
2707 {
2708 bool *p_init_failed = opaque;
2709 const char *acc = qemu_opt_get(opts, "accel");
2710 AccelClass *ac = accel_find(acc);
2711 AccelState *accel;
2712 int ret;
2713
2714 if (!ac) {
2715 *p_init_failed = true;
2716 error_report("invalid accelerator %s", acc);
2717 return 0;
2718 }
2719 accel = ACCEL(object_new_with_class(OBJECT_CLASS(ac)));
2720 object_apply_compat_props(OBJECT(accel));
2721 qemu_opt_foreach(opts, accelerator_set_property,
2722 accel,
2723 &error_fatal);
2724
2725 ret = accel_init_machine(accel, current_machine);
2726 if (ret < 0) {
2727 *p_init_failed = true;
2728 error_report("failed to initialize %s: %s",
2729 acc, strerror(-ret));
2730 return 0;
2731 }
2732
2733 return 1;
2734 }
2735
2736 static void configure_accelerators(const char *progname)
2737 {
2738 const char *accel;
2739 bool init_failed = false;
2740
2741 qemu_opts_foreach(qemu_find_opts("icount"),
2742 do_configure_icount, NULL, &error_fatal);
2743
2744 accel = qemu_opt_get(qemu_get_machine_opts(), "accel");
2745 if (QTAILQ_EMPTY(&qemu_accel_opts.head)) {
2746 char **accel_list, **tmp;
2747
2748 if (accel == NULL) {
2749 /* Select the default accelerator */
2750 bool have_tcg = accel_find("tcg");
2751 bool have_kvm = accel_find("kvm");
2752
2753 if (have_tcg && have_kvm) {
2754 if (g_str_has_suffix(progname, "kvm")) {
2755 /* If the program name ends with "kvm", we prefer KVM */
2756 accel = "kvm:tcg";
2757 } else {
2758 accel = "tcg:kvm";
2759 }
2760 } else if (have_kvm) {
2761 accel = "kvm";
2762 } else if (have_tcg) {
2763 accel = "tcg";
2764 } else {
2765 error_report("No accelerator selected and"
2766 " no default accelerator available");
2767 exit(1);
2768 }
2769 }
2770 accel_list = g_strsplit(accel, ":", 0);
2771
2772 for (tmp = accel_list; *tmp; tmp++) {
2773 /*
2774 * Filter invalid accelerators here, to prevent obscenities
2775 * such as "-machine accel=tcg,,thread=single".
2776 */
2777 if (accel_find(*tmp)) {
2778 qemu_opts_parse_noisily(qemu_find_opts("accel"), *tmp, true);
2779 } else {
2780 init_failed = true;
2781 error_report("invalid accelerator %s", *tmp);
2782 }
2783 }
2784 g_strfreev(accel_list);
2785 } else {
2786 if (accel != NULL) {
2787 error_report("The -accel and \"-machine accel=\" options are incompatible");
2788 exit(1);
2789 }
2790 }
2791
2792 if (!qemu_opts_foreach(qemu_find_opts("accel"),
2793 do_configure_accelerator, &init_failed, &error_fatal)) {
2794 if (!init_failed) {
2795 error_report("no accelerator found");
2796 }
2797 exit(1);
2798 }
2799
2800 if (init_failed) {
2801 AccelClass *ac = ACCEL_GET_CLASS(current_accel());
2802 error_report("falling back to %s", ac->name);
2803 }
2804
2805 if (use_icount && !(tcg_enabled() || qtest_enabled())) {
2806 error_report("-icount is not allowed with hardware virtualization");
2807 exit(1);
2808 }
2809 }
2810
2811 static void create_default_memdev(MachineState *ms, const char *path)
2812 {
2813 Object *obj;
2814 MachineClass *mc = MACHINE_GET_CLASS(ms);
2815
2816 obj = object_new(path ? TYPE_MEMORY_BACKEND_FILE : TYPE_MEMORY_BACKEND_RAM);
2817 if (path) {
2818 object_property_set_str(obj, "mem-path", path, &error_fatal);
2819 }
2820 object_property_set_int(obj, "size", ms->ram_size, &error_fatal);
2821 object_property_add_child(object_get_objects_root(), mc->default_ram_id,
2822 obj);
2823 /* Ensure backend's memory region name is equal to mc->default_ram_id */
2824 object_property_set_bool(obj, "x-use-canonical-path-for-ramblock-id",
2825 false, &error_fatal);
2826 user_creatable_complete(USER_CREATABLE(obj), &error_fatal);
2827 object_unref(obj);
2828 object_property_set_str(OBJECT(ms), "memory-backend", mc->default_ram_id,
2829 &error_fatal);
2830 }
2831
2832 void qemu_init(int argc, char **argv, char **envp)
2833 {
2834 int i;
2835 int snapshot, linux_boot;
2836 const char *initrd_filename;
2837 const char *kernel_filename, *kernel_cmdline;
2838 const char *boot_order = NULL;
2839 const char *boot_once = NULL;
2840 DisplayState *ds;
2841 QemuOpts *opts, *machine_opts;
2842 QemuOpts *icount_opts = NULL, *accel_opts = NULL;
2843 QemuOptsList *olist;
2844 int optind;
2845 const char *optarg;
2846 const char *loadvm = NULL;
2847 MachineClass *machine_class;
2848 const char *cpu_option;
2849 const char *vga_model = NULL;
2850 const char *qtest_chrdev = NULL;
2851 const char *qtest_log = NULL;
2852 const char *incoming = NULL;
2853 bool userconfig = true;
2854 bool nographic = false;
2855 int display_remote = 0;
2856 const char *log_mask = NULL;
2857 const char *log_file = NULL;
2858 char *trace_file = NULL;
2859 ram_addr_t maxram_size;
2860 uint64_t ram_slots = 0;
2861 FILE *vmstate_dump_file = NULL;
2862 Error *main_loop_err = NULL;
2863 Error *err = NULL;
2864 bool list_data_dirs = false;
2865 char *dir, **dirs;
2866 const char *mem_path = NULL;
2867 bool have_custom_ram_size;
2868 BlockdevOptionsQueue bdo_queue = QSIMPLEQ_HEAD_INITIALIZER(bdo_queue);
2869 QemuPluginList plugin_list = QTAILQ_HEAD_INITIALIZER(plugin_list);
2870 int mem_prealloc = 0; /* force preallocation of physical target memory */
2871
2872 os_set_line_buffering();
2873
2874 error_init(argv[0]);
2875 module_call_init(MODULE_INIT_TRACE);
2876
2877 qemu_init_cpu_list();
2878 qemu_init_cpu_loop();
2879
2880 qemu_mutex_lock_iothread();
2881
2882 atexit(qemu_run_exit_notifiers);
2883 qemu_init_exec_dir(argv[0]);
2884
2885 module_call_init(MODULE_INIT_QOM);
2886 module_call_init(MODULE_INIT_MIGRATION);
2887
2888 qemu_add_opts(&qemu_drive_opts);
2889 qemu_add_drive_opts(&qemu_legacy_drive_opts);
2890 qemu_add_drive_opts(&qemu_common_drive_opts);
2891 qemu_add_drive_opts(&qemu_drive_opts);
2892 qemu_add_drive_opts(&bdrv_runtime_opts);
2893 qemu_add_opts(&qemu_chardev_opts);
2894 qemu_add_opts(&qemu_device_opts);
2895 qemu_add_opts(&qemu_netdev_opts);
2896 qemu_add_opts(&qemu_nic_opts);
2897 qemu_add_opts(&qemu_net_opts);
2898 qemu_add_opts(&qemu_rtc_opts);
2899 qemu_add_opts(&qemu_global_opts);
2900 qemu_add_opts(&qemu_mon_opts);
2901 qemu_add_opts(&qemu_trace_opts);
2902 qemu_plugin_add_opts();
2903 qemu_add_opts(&qemu_option_rom_opts);
2904 qemu_add_opts(&qemu_machine_opts);
2905 qemu_add_opts(&qemu_accel_opts);
2906 qemu_add_opts(&qemu_mem_opts);
2907 qemu_add_opts(&qemu_smp_opts);
2908 qemu_add_opts(&qemu_boot_opts);
2909 qemu_add_opts(&qemu_add_fd_opts);
2910 qemu_add_opts(&qemu_object_opts);
2911 qemu_add_opts(&qemu_tpmdev_opts);
2912 qemu_add_opts(&qemu_realtime_opts);
2913 qemu_add_opts(&qemu_overcommit_opts);
2914 qemu_add_opts(&qemu_msg_opts);
2915 qemu_add_opts(&qemu_name_opts);
2916 qemu_add_opts(&qemu_numa_opts);
2917 qemu_add_opts(&qemu_icount_opts);
2918 qemu_add_opts(&qemu_semihosting_config_opts);
2919 qemu_add_opts(&qemu_fw_cfg_opts);
2920 module_call_init(MODULE_INIT_OPTS);
2921
2922 runstate_init();
2923 precopy_infrastructure_init();
2924 postcopy_infrastructure_init();
2925 monitor_init_globals();
2926
2927 if (qcrypto_init(&err) < 0) {
2928 error_reportf_err(err, "cannot initialize crypto: ");
2929 exit(1);
2930 }
2931
2932 QTAILQ_INIT(&vm_change_state_head);
2933 os_setup_early_signal_handling();
2934
2935 cpu_option = NULL;
2936 snapshot = 0;
2937
2938 nb_nics = 0;
2939
2940 bdrv_init_with_whitelist();
2941
2942 autostart = 1;
2943
2944 /* first pass of option parsing */
2945 optind = 1;
2946 while (optind < argc) {
2947 if (argv[optind][0] != '-') {
2948 /* disk image */
2949 optind++;
2950 } else {
2951 const QEMUOption *popt;
2952
2953 popt = lookup_opt(argc, argv, &optarg, &optind);
2954 switch (popt->index) {
2955 case QEMU_OPTION_nouserconfig:
2956 userconfig = false;
2957 break;
2958 }
2959 }
2960 }
2961
2962 if (userconfig) {
2963 if (qemu_read_default_config_file() < 0) {
2964 exit(1);
2965 }
2966 }
2967
2968 /* second pass of option parsing */
2969 optind = 1;
2970 for(;;) {
2971 if (optind >= argc)
2972 break;
2973 if (argv[optind][0] != '-') {
2974 loc_set_cmdline(argv, optind, 1);
2975 drive_add(IF_DEFAULT, 0, argv[optind++], HD_OPTS);
2976 } else {
2977 const QEMUOption *popt;
2978
2979 popt = lookup_opt(argc, argv, &optarg, &optind);
2980 if (!(popt->arch_mask & arch_type)) {
2981 error_report("Option not supported for this target");
2982 exit(1);
2983 }
2984 switch(popt->index) {
2985 case QEMU_OPTION_cpu:
2986 /* hw initialization will check this */
2987 cpu_option = optarg;
2988 break;
2989 case QEMU_OPTION_hda:
2990 case QEMU_OPTION_hdb:
2991 case QEMU_OPTION_hdc:
2992 case QEMU_OPTION_hdd:
2993 drive_add(IF_DEFAULT, popt->index - QEMU_OPTION_hda, optarg,
2994 HD_OPTS);
2995 break;
2996 case QEMU_OPTION_blockdev:
2997 {
2998 Visitor *v;
2999 BlockdevOptionsQueueEntry *bdo;
3000
3001 v = qobject_input_visitor_new_str(optarg, "driver",
3002 &error_fatal);
3003
3004 bdo = g_new(BlockdevOptionsQueueEntry, 1);
3005 visit_type_BlockdevOptions(v, NULL, &bdo->bdo,
3006 &error_fatal);
3007 visit_free(v);
3008 loc_save(&bdo->loc);
3009 QSIMPLEQ_INSERT_TAIL(&bdo_queue, bdo, entry);
3010 break;
3011 }
3012 case QEMU_OPTION_drive:
3013 if (drive_def(optarg) == NULL) {
3014 exit(1);
3015 }
3016 break;
3017 case QEMU_OPTION_set:
3018 if (qemu_set_option(optarg) != 0)
3019 exit(1);
3020 break;
3021 case QEMU_OPTION_global:
3022 if (qemu_global_option(optarg) != 0)
3023 exit(1);
3024 break;
3025 case QEMU_OPTION_mtdblock:
3026 drive_add(IF_MTD, -1, optarg, MTD_OPTS);
3027 break;
3028 case QEMU_OPTION_sd:
3029 drive_add(IF_SD, -1, optarg, SD_OPTS);
3030 break;
3031 case QEMU_OPTION_pflash:
3032 drive_add(IF_PFLASH, -1, optarg, PFLASH_OPTS);
3033 break;
3034 case QEMU_OPTION_snapshot:
3035 {
3036 Error *blocker = NULL;
3037 snapshot = 1;
3038 error_setg(&blocker, QERR_REPLAY_NOT_SUPPORTED,
3039 "-snapshot");
3040 replay_add_blocker(blocker);
3041 }
3042 break;
3043 case QEMU_OPTION_numa:
3044 opts = qemu_opts_parse_noisily(qemu_find_opts("numa"),
3045 optarg, true);
3046 if (!opts) {
3047 exit(1);
3048 }
3049 break;
3050 case QEMU_OPTION_display:
3051 parse_display(optarg);
3052 break;
3053 case QEMU_OPTION_nographic:
3054 olist = qemu_find_opts("machine");
3055 qemu_opts_parse_noisily(olist, "graphics=off", false);
3056 nographic = true;
3057 dpy.type = DISPLAY_TYPE_NONE;
3058 break;
3059 case QEMU_OPTION_curses:
3060 #ifdef CONFIG_CURSES
3061 dpy.type = DISPLAY_TYPE_CURSES;
3062 #else
3063 error_report("curses or iconv support is disabled");
3064 exit(1);
3065 #endif
3066 break;
3067 case QEMU_OPTION_portrait:
3068 graphic_rotate = 90;
3069 break;
3070 case QEMU_OPTION_rotate:
3071 graphic_rotate = strtol(optarg, (char **) &optarg, 10);
3072 if (graphic_rotate != 0 && graphic_rotate != 90 &&
3073 graphic_rotate != 180 && graphic_rotate != 270) {
3074 error_report("only 90, 180, 270 deg rotation is available");
3075 exit(1);
3076 }
3077 break;
3078 case QEMU_OPTION_kernel:
3079 qemu_opts_set(qemu_find_opts("machine"), NULL, "kernel", optarg,
3080 &error_abort);
3081 break;
3082 case QEMU_OPTION_initrd:
3083 qemu_opts_set(qemu_find_opts("machine"), NULL, "initrd", optarg,
3084 &error_abort);
3085 break;
3086 case QEMU_OPTION_append:
3087 qemu_opts_set(qemu_find_opts("machine"), NULL, "append", optarg,
3088 &error_abort);
3089 break;
3090 case QEMU_OPTION_dtb:
3091 qemu_opts_set(qemu_find_opts("machine"), NULL, "dtb", optarg,
3092 &error_abort);
3093 break;
3094 case QEMU_OPTION_cdrom:
3095 drive_add(IF_DEFAULT, 2, optarg, CDROM_OPTS);
3096 break;
3097 case QEMU_OPTION_boot:
3098 opts = qemu_opts_parse_noisily(qemu_find_opts("boot-opts"),
3099 optarg, true);
3100 if (!opts) {
3101 exit(1);
3102 }
3103 break;
3104 case QEMU_OPTION_fda:
3105 case QEMU_OPTION_fdb:
3106 drive_add(IF_FLOPPY, popt->index - QEMU_OPTION_fda,
3107 optarg, FD_OPTS);
3108 break;
3109 case QEMU_OPTION_no_fd_bootchk:
3110 fd_bootchk = 0;
3111 break;
3112 case QEMU_OPTION_netdev:
3113 default_net = 0;
3114 if (net_client_parse(qemu_find_opts("netdev"), optarg) == -1) {
3115 exit(1);
3116 }
3117 break;
3118 case QEMU_OPTION_nic:
3119 default_net = 0;
3120 if (net_client_parse(qemu_find_opts("nic"), optarg) == -1) {
3121 exit(1);
3122 }
3123 break;
3124 case QEMU_OPTION_net:
3125 default_net = 0;
3126 if (net_client_parse(qemu_find_opts("net"), optarg) == -1) {
3127 exit(1);
3128 }
3129 break;
3130 #ifdef CONFIG_LIBISCSI
3131 case QEMU_OPTION_iscsi:
3132 opts = qemu_opts_parse_noisily(qemu_find_opts("iscsi"),
3133 optarg, false);
3134 if (!opts) {
3135 exit(1);
3136 }
3137 break;
3138 #endif
3139 case QEMU_OPTION_audio_help:
3140 audio_legacy_help();
3141 exit (0);
3142 break;
3143 case QEMU_OPTION_audiodev:
3144 audio_parse_option(optarg);
3145 break;
3146 case QEMU_OPTION_soundhw:
3147 select_soundhw (optarg);
3148 break;
3149 case QEMU_OPTION_h:
3150 help(0);
3151 break;
3152 case QEMU_OPTION_version:
3153 version();
3154 exit(0);
3155 break;
3156 case QEMU_OPTION_m:
3157 opts = qemu_opts_parse_noisily(qemu_find_opts("memory"),
3158 optarg, true);
3159 if (!opts) {
3160 exit(EXIT_FAILURE);
3161 }
3162 break;
3163 #ifdef CONFIG_TPM
3164 case QEMU_OPTION_tpmdev:
3165 if (tpm_config_parse(qemu_find_opts("tpmdev"), optarg) < 0) {
3166 exit(1);
3167 }
3168 break;
3169 #endif
3170 case QEMU_OPTION_mempath:
3171 mem_path = optarg;
3172 break;
3173 case QEMU_OPTION_mem_prealloc:
3174 mem_prealloc = 1;
3175 break;
3176 case QEMU_OPTION_d:
3177 log_mask = optarg;
3178 break;
3179 case QEMU_OPTION_D:
3180 log_file = optarg;
3181 break;
3182 case QEMU_OPTION_DFILTER:
3183 qemu_set_dfilter_ranges(optarg, &error_fatal);
3184 break;
3185 case QEMU_OPTION_seed:
3186 qemu_guest_random_seed_main(optarg, &error_fatal);
3187 break;
3188 case QEMU_OPTION_s:
3189 add_device_config(DEV_GDB, "tcp::" DEFAULT_GDBSTUB_PORT);
3190 break;
3191 case QEMU_OPTION_gdb:
3192 add_device_config(DEV_GDB, optarg);
3193 break;
3194 case QEMU_OPTION_L:
3195 if (is_help_option(optarg)) {
3196 list_data_dirs = true;
3197 } else {
3198 qemu_add_data_dir(optarg);
3199 }
3200 break;
3201 case QEMU_OPTION_bios:
3202 qemu_opts_set(qemu_find_opts("machine"), NULL, "firmware", optarg,
3203 &error_abort);
3204 break;
3205 case QEMU_OPTION_singlestep:
3206 singlestep = 1;
3207 break;
3208 case QEMU_OPTION_S:
3209 autostart = 0;
3210 break;
3211 case QEMU_OPTION_k:
3212 keyboard_layout = optarg;
3213 break;
3214 case QEMU_OPTION_vga:
3215 vga_model = optarg;
3216 default_vga = 0;
3217 break;
3218 case QEMU_OPTION_g:
3219 {
3220 const char *p;
3221 int w, h, depth;
3222 p = optarg;
3223 w = strtol(p, (char **)&p, 10);
3224 if (w <= 0) {
3225 graphic_error:
3226 error_report("invalid resolution or depth");
3227 exit(1);
3228 }
3229 if (*p != 'x')
3230 goto graphic_error;
3231 p++;
3232 h = strtol(p, (char **)&p, 10);
3233 if (h <= 0)
3234 goto graphic_error;
3235 if (*p == 'x') {
3236 p++;
3237 depth = strtol(p, (char **)&p, 10);
3238 if (depth != 1 && depth != 2 && depth != 4 &&
3239 depth != 8 && depth != 15 && depth != 16 &&
3240 depth != 24 && depth != 32)
3241 goto graphic_error;
3242 } else if (*p == '\0') {
3243 depth = graphic_depth;
3244 } else {
3245 goto graphic_error;
3246 }
3247
3248 graphic_width = w;
3249 graphic_height = h;
3250 graphic_depth = depth;
3251 }
3252 break;
3253 case QEMU_OPTION_echr:
3254 {
3255 char *r;
3256 term_escape_char = strtol(optarg, &r, 0);
3257 if (r == optarg)
3258 printf("Bad argument to echr\n");
3259 break;
3260 }
3261 case QEMU_OPTION_monitor:
3262 default_monitor = 0;
3263 if (strncmp(optarg, "none", 4)) {
3264 monitor_parse(optarg, "readline", false);
3265 }
3266 break;
3267 case QEMU_OPTION_qmp:
3268 monitor_parse(optarg, "control", false);
3269 default_monitor = 0;
3270 break;
3271 case QEMU_OPTION_qmp_pretty:
3272 monitor_parse(optarg, "control", true);
3273 default_monitor = 0;
3274 break;
3275 case QEMU_OPTION_mon:
3276 opts = qemu_opts_parse_noisily(qemu_find_opts("mon"), optarg,
3277 true);
3278 if (!opts) {
3279 exit(1);
3280 }
3281 default_monitor = 0;
3282 break;
3283 case QEMU_OPTION_chardev:
3284 opts = qemu_opts_parse_noisily(qemu_find_opts("chardev"),
3285 optarg, true);
3286 if (!opts) {
3287 exit(1);
3288 }
3289 break;
3290 case QEMU_OPTION_fsdev:
3291 olist = qemu_find_opts("fsdev");
3292 if (!olist) {
3293 error_report("fsdev support is disabled");
3294 exit(1);
3295 }
3296 opts = qemu_opts_parse_noisily(olist, optarg, true);
3297 if (!opts) {
3298 exit(1);
3299 }
3300 break;
3301 case QEMU_OPTION_virtfs: {
3302 QemuOpts *fsdev;
3303 QemuOpts *device;
3304 const char *writeout, *sock_fd, *socket, *path, *security_model,
3305 *multidevs;
3306
3307 olist = qemu_find_opts("virtfs");
3308 if (!olist) {
3309 error_report("virtfs support is disabled");
3310 exit(1);
3311 }
3312 opts = qemu_opts_parse_noisily(olist, optarg, true);
3313 if (!opts) {
3314 exit(1);
3315 }
3316
3317 if (qemu_opt_get(opts, "fsdriver") == NULL ||
3318 qemu_opt_get(opts, "mount_tag") == NULL) {
3319 error_report("Usage: -virtfs fsdriver,mount_tag=tag");
3320 exit(1);
3321 }
3322 fsdev = qemu_opts_create(qemu_find_opts("fsdev"),
3323 qemu_opts_id(opts) ?:
3324 qemu_opt_get(opts, "mount_tag"),
3325 1, NULL);
3326 if (!fsdev) {
3327 error_report("duplicate or invalid fsdev id: %s",
3328 qemu_opt_get(opts, "mount_tag"));
3329 exit(1);
3330 }
3331
3332 writeout = qemu_opt_get(opts, "writeout");
3333 if (writeout) {
3334 #ifdef CONFIG_SYNC_FILE_RANGE
3335 qemu_opt_set(fsdev, "writeout", writeout, &error_abort);
3336 #else
3337 error_report("writeout=immediate not supported "
3338 "on this platform");
3339 exit(1);
3340 #endif
3341 }
3342 qemu_opt_set(fsdev, "fsdriver",
3343 qemu_opt_get(opts, "fsdriver"), &error_abort);
3344 path = qemu_opt_get(opts, "path");
3345 if (path) {
3346 qemu_opt_set(fsdev, "path", path, &error_abort);
3347 }
3348 security_model = qemu_opt_get(opts, "security_model");
3349 if (security_model) {
3350 qemu_opt_set(fsdev, "security_model", security_model,
3351 &error_abort);
3352 }
3353 socket = qemu_opt_get(opts, "socket");
3354 if (socket) {
3355 qemu_opt_set(fsdev, "socket", socket, &error_abort);
3356 }
3357 sock_fd = qemu_opt_get(opts, "sock_fd");
3358 if (sock_fd) {
3359 qemu_opt_set(fsdev, "sock_fd", sock_fd, &error_abort);
3360 }
3361
3362 qemu_opt_set_bool(fsdev, "readonly",
3363 qemu_opt_get_bool(opts, "readonly", 0),
3364 &error_abort);
3365 multidevs = qemu_opt_get(opts, "multidevs");
3366 if (multidevs) {
3367 qemu_opt_set(fsdev, "multidevs", multidevs, &error_abort);
3368 }
3369 device = qemu_opts_create(qemu_find_opts("device"), NULL, 0,
3370 &error_abort);
3371 qemu_opt_set(device, "driver", "virtio-9p-pci", &error_abort);
3372 qemu_opt_set(device, "fsdev",
3373 qemu_opts_id(fsdev), &error_abort);
3374 qemu_opt_set(device, "mount_tag",
3375 qemu_opt_get(opts, "mount_tag"), &error_abort);
3376 break;
3377 }
3378 case QEMU_OPTION_serial:
3379 add_device_config(DEV_SERIAL, optarg);
3380 default_serial = 0;
3381 if (strncmp(optarg, "mon:", 4) == 0) {
3382 default_monitor = 0;
3383 }
3384 break;
3385 case QEMU_OPTION_watchdog:
3386 if (watchdog) {
3387 error_report("only one watchdog option may be given");
3388 exit(1);
3389 }
3390 watchdog = optarg;
3391 break;
3392 case QEMU_OPTION_watchdog_action:
3393 if (select_watchdog_action(optarg) == -1) {
3394 error_report("unknown -watchdog-action parameter");
3395 exit(1);
3396 }
3397 break;
3398 case QEMU_OPTION_parallel:
3399 add_device_config(DEV_PARALLEL, optarg);
3400 default_parallel = 0;
3401 if (strncmp(optarg, "mon:", 4) == 0) {
3402 default_monitor = 0;
3403 }
3404 break;
3405 case QEMU_OPTION_debugcon:
3406 add_device_config(DEV_DEBUGCON, optarg);
3407 break;
3408 case QEMU_OPTION_loadvm:
3409 loadvm = optarg;
3410 break;
3411 case QEMU_OPTION_full_screen:
3412 dpy.has_full_screen = true;
3413 dpy.full_screen = true;
3414 break;
3415 case QEMU_OPTION_alt_grab:
3416 alt_grab = 1;
3417 break;
3418 case QEMU_OPTION_ctrl_grab:
3419 ctrl_grab = 1;
3420 break;
3421 case QEMU_OPTION_no_quit:
3422 dpy.has_window_close = true;
3423