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linux-user, s390x: add syscall table generation support
[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
40 #include "qemu/error-report.h"
41 #include "qemu/sockets.h"
42 #include "sysemu/accel.h"
43 #include "hw/usb.h"
44 #include "hw/isa/isa.h"
45 #include "hw/scsi/scsi.h"
46 #include "hw/display/vga.h"
47 #include "sysemu/watchdog.h"
48 #include "hw/firmware/smbios.h"
49 #include "hw/acpi/acpi.h"
50 #include "hw/xen/xen.h"
51 #include "hw/loader.h"
52 #include "monitor/qdev.h"
53 #include "net/net.h"
54 #include "net/slirp.h"
55 #include "monitor/monitor.h"
56 #include "ui/console.h"
57 #include "ui/input.h"
58 #include "sysemu/sysemu.h"
59 #include "sysemu/numa.h"
60 #include "sysemu/hostmem.h"
61 #include "exec/gdbstub.h"
62 #include "qemu/timer.h"
63 #include "chardev/char.h"
64 #include "qemu/bitmap.h"
65 #include "qemu/log.h"
66 #include "sysemu/blockdev.h"
67 #include "hw/block/block.h"
68 #include "migration/misc.h"
69 #include "migration/snapshot.h"
70 #include "migration/global_state.h"
71 #include "sysemu/tpm.h"
72 #include "sysemu/dma.h"
73 #include "hw/audio/soundhw.h"
74 #include "audio/audio.h"
75 #include "sysemu/cpus.h"
76 #include "migration/colo.h"
77 #include "migration/postcopy-ram.h"
78 #include "sysemu/kvm.h"
79 #include "sysemu/hax.h"
80 #include "qapi/qobject-input-visitor.h"
81 #include "qemu/option.h"
82 #include "qemu/config-file.h"
83 #include "qemu-options.h"
84 #include "qemu/main-loop.h"
85 #ifdef CONFIG_VIRTFS
86 #include "fsdev/qemu-fsdev.h"
87 #endif
88 #include "sysemu/qtest.h"
89
90 #include "disas/disas.h"
91
92 #include "trace-root.h"
93 #include "trace/control.h"
94 #include "qemu/plugin.h"
95 #include "qemu/queue.h"
96 #include "sysemu/arch_init.h"
97
98 #include "ui/qemu-spice.h"
99 #include "qapi/string-input-visitor.h"
100 #include "qapi/opts-visitor.h"
101 #include "qapi/clone-visitor.h"
102 #include "qom/object_interfaces.h"
103 #include "hw/semihosting/semihost.h"
104 #include "crypto/init.h"
105 #include "sysemu/replay.h"
106 #include "qapi/qapi-events-run-state.h"
107 #include "qapi/qapi-visit-block-core.h"
108 #include "qapi/qapi-visit-ui.h"
109 #include "qapi/qapi-commands-block-core.h"
110 #include "qapi/qapi-commands-run-state.h"
111 #include "qapi/qapi-commands-ui.h"
112 #include "qapi/qmp/qerror.h"
113 #include "sysemu/iothread.h"
114 #include "qemu/guest-random.h"
115
116 #define MAX_VIRTIO_CONSOLES 1
117
118 static const char *data_dir[16];
119 static int data_dir_idx;
120 const char *bios_name = NULL;
121 enum vga_retrace_method vga_retrace_method = VGA_RETRACE_DUMB;
122 int display_opengl;
123 const char* keyboard_layout = NULL;
124 ram_addr_t ram_size;
125 bool enable_mlock = false;
126 bool enable_cpu_pm = false;
127 int nb_nics;
128 NICInfo nd_table[MAX_NICS];
129 int autostart;
130 static enum {
131 RTC_BASE_UTC,
132 RTC_BASE_LOCALTIME,
133 RTC_BASE_DATETIME,
134 } rtc_base_type = RTC_BASE_UTC;
135 static time_t rtc_ref_start_datetime;
136 static int rtc_realtime_clock_offset; /* used only with QEMU_CLOCK_REALTIME */
137 static int rtc_host_datetime_offset = -1; /* valid & used only with
138 RTC_BASE_DATETIME */
139 QEMUClockType rtc_clock;
140 int vga_interface_type = VGA_NONE;
141 static DisplayOptions dpy;
142 static int num_serial_hds;
143 static Chardev **serial_hds;
144 Chardev *parallel_hds[MAX_PARALLEL_PORTS];
145 int win2k_install_hack = 0;
146 int singlestep = 0;
147 int acpi_enabled = 1;
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 bool xen_allowed;
183 uint32_t xen_domid;
184 enum xen_mode xen_mode = XEN_EMULATE;
185 bool xen_domid_restrict;
186
187 static int has_defaults = 1;
188 static int default_serial = 1;
189 static int default_parallel = 1;
190 static int default_monitor = 1;
191 static int default_floppy = 1;
192 static int default_cdrom = 1;
193 static int default_sdcard = 1;
194 static int default_vga = 1;
195 static int default_net = 1;
196
197 static struct {
198 const char *driver;
199 int *flag;
200 } default_list[] = {
201 { .driver = "isa-serial", .flag = &default_serial },
202 { .driver = "isa-parallel", .flag = &default_parallel },
203 { .driver = "isa-fdc", .flag = &default_floppy },
204 { .driver = "floppy", .flag = &default_floppy },
205 { .driver = "ide-cd", .flag = &default_cdrom },
206 { .driver = "ide-hd", .flag = &default_cdrom },
207 { .driver = "ide-drive", .flag = &default_cdrom },
208 { .driver = "scsi-cd", .flag = &default_cdrom },
209 { .driver = "scsi-hd", .flag = &default_cdrom },
210 { .driver = "VGA", .flag = &default_vga },
211 { .driver = "isa-vga", .flag = &default_vga },
212 { .driver = "cirrus-vga", .flag = &default_vga },
213 { .driver = "isa-cirrus-vga", .flag = &default_vga },
214 { .driver = "vmware-svga", .flag = &default_vga },
215 { .driver = "qxl-vga", .flag = &default_vga },
216 { .driver = "virtio-vga", .flag = &default_vga },
217 { .driver = "ati-vga", .flag = &default_vga },
218 { .driver = "vhost-user-vga", .flag = &default_vga },
219 };
220
221 static QemuOptsList qemu_rtc_opts = {
222 .name = "rtc",
223 .head = QTAILQ_HEAD_INITIALIZER(qemu_rtc_opts.head),
224 .merge_lists = true,
225 .desc = {
226 {
227 .name = "base",
228 .type = QEMU_OPT_STRING,
229 },{
230 .name = "clock",
231 .type = QEMU_OPT_STRING,
232 },{
233 .name = "driftfix",
234 .type = QEMU_OPT_STRING,
235 },
236 { /* end of list */ }
237 },
238 };
239
240 static QemuOptsList qemu_option_rom_opts = {
241 .name = "option-rom",
242 .implied_opt_name = "romfile",
243 .head = QTAILQ_HEAD_INITIALIZER(qemu_option_rom_opts.head),
244 .desc = {
245 {
246 .name = "bootindex",
247 .type = QEMU_OPT_NUMBER,
248 }, {
249 .name = "romfile",
250 .type = QEMU_OPT_STRING,
251 },
252 { /* end of list */ }
253 },
254 };
255
256 static QemuOptsList qemu_machine_opts = {
257 .name = "machine",
258 .implied_opt_name = "type",
259 .merge_lists = true,
260 .head = QTAILQ_HEAD_INITIALIZER(qemu_machine_opts.head),
261 .desc = {
262 /*
263 * no elements => accept any
264 * sanity checking will happen later
265 * when setting machine properties
266 */
267 { }
268 },
269 };
270
271 static QemuOptsList qemu_accel_opts = {
272 .name = "accel",
273 .implied_opt_name = "accel",
274 .head = QTAILQ_HEAD_INITIALIZER(qemu_accel_opts.head),
275 .desc = {
276 /*
277 * no elements => accept any
278 * sanity checking will happen later
279 * when setting accelerator properties
280 */
281 { }
282 },
283 };
284
285 static QemuOptsList qemu_boot_opts = {
286 .name = "boot-opts",
287 .implied_opt_name = "order",
288 .merge_lists = true,
289 .head = QTAILQ_HEAD_INITIALIZER(qemu_boot_opts.head),
290 .desc = {
291 {
292 .name = "order",
293 .type = QEMU_OPT_STRING,
294 }, {
295 .name = "once",
296 .type = QEMU_OPT_STRING,
297 }, {
298 .name = "menu",
299 .type = QEMU_OPT_BOOL,
300 }, {
301 .name = "splash",
302 .type = QEMU_OPT_STRING,
303 }, {
304 .name = "splash-time",
305 .type = QEMU_OPT_NUMBER,
306 }, {
307 .name = "reboot-timeout",
308 .type = QEMU_OPT_NUMBER,
309 }, {
310 .name = "strict",
311 .type = QEMU_OPT_BOOL,
312 },
313 { /*End of list */ }
314 },
315 };
316
317 static QemuOptsList qemu_add_fd_opts = {
318 .name = "add-fd",
319 .head = QTAILQ_HEAD_INITIALIZER(qemu_add_fd_opts.head),
320 .desc = {
321 {
322 .name = "fd",
323 .type = QEMU_OPT_NUMBER,
324 .help = "file descriptor of which a duplicate is added to fd set",
325 },{
326 .name = "set",
327 .type = QEMU_OPT_NUMBER,
328 .help = "ID of the fd set to add fd to",
329 },{
330 .name = "opaque",
331 .type = QEMU_OPT_STRING,
332 .help = "free-form string used to describe fd",
333 },
334 { /* end of list */ }
335 },
336 };
337
338 static QemuOptsList qemu_object_opts = {
339 .name = "object",
340 .implied_opt_name = "qom-type",
341 .head = QTAILQ_HEAD_INITIALIZER(qemu_object_opts.head),
342 .desc = {
343 { }
344 },
345 };
346
347 static QemuOptsList qemu_tpmdev_opts = {
348 .name = "tpmdev",
349 .implied_opt_name = "type",
350 .head = QTAILQ_HEAD_INITIALIZER(qemu_tpmdev_opts.head),
351 .desc = {
352 /* options are defined in the TPM backends */
353 { /* end of list */ }
354 },
355 };
356
357 static QemuOptsList qemu_realtime_opts = {
358 .name = "realtime",
359 .head = QTAILQ_HEAD_INITIALIZER(qemu_realtime_opts.head),
360 .desc = {
361 {
362 .name = "mlock",
363 .type = QEMU_OPT_BOOL,
364 },
365 { /* end of list */ }
366 },
367 };
368
369 static QemuOptsList qemu_overcommit_opts = {
370 .name = "overcommit",
371 .head = QTAILQ_HEAD_INITIALIZER(qemu_overcommit_opts.head),
372 .desc = {
373 {
374 .name = "mem-lock",
375 .type = QEMU_OPT_BOOL,
376 },
377 {
378 .name = "cpu-pm",
379 .type = QEMU_OPT_BOOL,
380 },
381 { /* end of list */ }
382 },
383 };
384
385 static QemuOptsList qemu_msg_opts = {
386 .name = "msg",
387 .head = QTAILQ_HEAD_INITIALIZER(qemu_msg_opts.head),
388 .desc = {
389 {
390 .name = "timestamp",
391 .type = QEMU_OPT_BOOL,
392 },
393 { /* end of list */ }
394 },
395 };
396
397 static QemuOptsList qemu_name_opts = {
398 .name = "name",
399 .implied_opt_name = "guest",
400 .merge_lists = true,
401 .head = QTAILQ_HEAD_INITIALIZER(qemu_name_opts.head),
402 .desc = {
403 {
404 .name = "guest",
405 .type = QEMU_OPT_STRING,
406 .help = "Sets the name of the guest.\n"
407 "This name will be displayed in the SDL window caption.\n"
408 "The name will also be used for the VNC server",
409 }, {
410 .name = "process",
411 .type = QEMU_OPT_STRING,
412 .help = "Sets the name of the QEMU process, as shown in top etc",
413 }, {
414 .name = "debug-threads",
415 .type = QEMU_OPT_BOOL,
416 .help = "When enabled, name the individual threads; defaults off.\n"
417 "NOTE: The thread names are for debugging and not a\n"
418 "stable API.",
419 },
420 { /* End of list */ }
421 },
422 };
423
424 static QemuOptsList qemu_mem_opts = {
425 .name = "memory",
426 .implied_opt_name = "size",
427 .head = QTAILQ_HEAD_INITIALIZER(qemu_mem_opts.head),
428 .merge_lists = true,
429 .desc = {
430 {
431 .name = "size",
432 .type = QEMU_OPT_SIZE,
433 },
434 {
435 .name = "slots",
436 .type = QEMU_OPT_NUMBER,
437 },
438 {
439 .name = "maxmem",
440 .type = QEMU_OPT_SIZE,
441 },
442 { /* end of list */ }
443 },
444 };
445
446 static QemuOptsList qemu_icount_opts = {
447 .name = "icount",
448 .implied_opt_name = "shift",
449 .merge_lists = true,
450 .head = QTAILQ_HEAD_INITIALIZER(qemu_icount_opts.head),
451 .desc = {
452 {
453 .name = "shift",
454 .type = QEMU_OPT_STRING,
455 }, {
456 .name = "align",
457 .type = QEMU_OPT_BOOL,
458 }, {
459 .name = "sleep",
460 .type = QEMU_OPT_BOOL,
461 }, {
462 .name = "rr",
463 .type = QEMU_OPT_STRING,
464 }, {
465 .name = "rrfile",
466 .type = QEMU_OPT_STRING,
467 }, {
468 .name = "rrsnapshot",
469 .type = QEMU_OPT_STRING,
470 },
471 { /* end of list */ }
472 },
473 };
474
475 static QemuOptsList qemu_fw_cfg_opts = {
476 .name = "fw_cfg",
477 .implied_opt_name = "name",
478 .head = QTAILQ_HEAD_INITIALIZER(qemu_fw_cfg_opts.head),
479 .desc = {
480 {
481 .name = "name",
482 .type = QEMU_OPT_STRING,
483 .help = "Sets the fw_cfg name of the blob to be inserted",
484 }, {
485 .name = "file",
486 .type = QEMU_OPT_STRING,
487 .help = "Sets the name of the file from which "
488 "the fw_cfg blob will be loaded",
489 }, {
490 .name = "string",
491 .type = QEMU_OPT_STRING,
492 .help = "Sets content of the blob to be inserted from a string",
493 },
494 { /* end of list */ }
495 },
496 };
497
498 /**
499 * Get machine options
500 *
501 * Returns: machine options (never null).
502 */
503 QemuOpts *qemu_get_machine_opts(void)
504 {
505 return qemu_find_opts_singleton("machine");
506 }
507
508 const char *qemu_get_vm_name(void)
509 {
510 return qemu_name;
511 }
512
513 static void res_free(void)
514 {
515 g_free(boot_splash_filedata);
516 boot_splash_filedata = NULL;
517 }
518
519 static int default_driver_check(void *opaque, QemuOpts *opts, Error **errp)
520 {
521 const char *driver = qemu_opt_get(opts, "driver");
522 int i;
523
524 if (!driver)
525 return 0;
526 for (i = 0; i < ARRAY_SIZE(default_list); i++) {
527 if (strcmp(default_list[i].driver, driver) != 0)
528 continue;
529 *(default_list[i].flag) = 0;
530 }
531 return 0;
532 }
533
534 /***********************************************************/
535 /* QEMU state */
536
537 static RunState current_run_state = RUN_STATE_PRECONFIG;
538
539 /* We use RUN_STATE__MAX but any invalid value will do */
540 static RunState vmstop_requested = RUN_STATE__MAX;
541 static QemuMutex vmstop_lock;
542
543 typedef struct {
544 RunState from;
545 RunState to;
546 } RunStateTransition;
547
548 static const RunStateTransition runstate_transitions_def[] = {
549 /* from -> to */
550 { RUN_STATE_PRECONFIG, RUN_STATE_PRELAUNCH },
551 /* Early switch to inmigrate state to allow -incoming CLI option work
552 * as it used to. TODO: delay actual switching to inmigrate state to
553 * the point after machine is built and remove this hack.
554 */
555 { RUN_STATE_PRECONFIG, RUN_STATE_INMIGRATE },
556
557 { RUN_STATE_DEBUG, RUN_STATE_RUNNING },
558 { RUN_STATE_DEBUG, RUN_STATE_FINISH_MIGRATE },
559 { RUN_STATE_DEBUG, RUN_STATE_PRELAUNCH },
560
561 { RUN_STATE_INMIGRATE, RUN_STATE_INTERNAL_ERROR },
562 { RUN_STATE_INMIGRATE, RUN_STATE_IO_ERROR },
563 { RUN_STATE_INMIGRATE, RUN_STATE_PAUSED },
564 { RUN_STATE_INMIGRATE, RUN_STATE_RUNNING },
565 { RUN_STATE_INMIGRATE, RUN_STATE_SHUTDOWN },
566 { RUN_STATE_INMIGRATE, RUN_STATE_SUSPENDED },
567 { RUN_STATE_INMIGRATE, RUN_STATE_WATCHDOG },
568 { RUN_STATE_INMIGRATE, RUN_STATE_GUEST_PANICKED },
569 { RUN_STATE_INMIGRATE, RUN_STATE_FINISH_MIGRATE },
570 { RUN_STATE_INMIGRATE, RUN_STATE_PRELAUNCH },
571 { RUN_STATE_INMIGRATE, RUN_STATE_POSTMIGRATE },
572 { RUN_STATE_INMIGRATE, RUN_STATE_COLO },
573
574 { RUN_STATE_INTERNAL_ERROR, RUN_STATE_PAUSED },
575 { RUN_STATE_INTERNAL_ERROR, RUN_STATE_FINISH_MIGRATE },
576 { RUN_STATE_INTERNAL_ERROR, RUN_STATE_PRELAUNCH },
577
578 { RUN_STATE_IO_ERROR, RUN_STATE_RUNNING },
579 { RUN_STATE_IO_ERROR, RUN_STATE_FINISH_MIGRATE },
580 { RUN_STATE_IO_ERROR, RUN_STATE_PRELAUNCH },
581
582 { RUN_STATE_PAUSED, RUN_STATE_RUNNING },
583 { RUN_STATE_PAUSED, RUN_STATE_FINISH_MIGRATE },
584 { RUN_STATE_PAUSED, RUN_STATE_POSTMIGRATE },
585 { RUN_STATE_PAUSED, RUN_STATE_PRELAUNCH },
586 { RUN_STATE_PAUSED, RUN_STATE_COLO},
587
588 { RUN_STATE_POSTMIGRATE, RUN_STATE_RUNNING },
589 { RUN_STATE_POSTMIGRATE, RUN_STATE_FINISH_MIGRATE },
590 { RUN_STATE_POSTMIGRATE, RUN_STATE_PRELAUNCH },
591
592 { RUN_STATE_PRELAUNCH, RUN_STATE_RUNNING },
593 { RUN_STATE_PRELAUNCH, RUN_STATE_FINISH_MIGRATE },
594 { RUN_STATE_PRELAUNCH, RUN_STATE_INMIGRATE },
595
596 { RUN_STATE_FINISH_MIGRATE, RUN_STATE_RUNNING },
597 { RUN_STATE_FINISH_MIGRATE, RUN_STATE_PAUSED },
598 { RUN_STATE_FINISH_MIGRATE, RUN_STATE_POSTMIGRATE },
599 { RUN_STATE_FINISH_MIGRATE, RUN_STATE_PRELAUNCH },
600 { RUN_STATE_FINISH_MIGRATE, RUN_STATE_COLO},
601
602 { RUN_STATE_RESTORE_VM, RUN_STATE_RUNNING },
603 { RUN_STATE_RESTORE_VM, RUN_STATE_PRELAUNCH },
604
605 { RUN_STATE_COLO, RUN_STATE_RUNNING },
606
607 { RUN_STATE_RUNNING, RUN_STATE_DEBUG },
608 { RUN_STATE_RUNNING, RUN_STATE_INTERNAL_ERROR },
609 { RUN_STATE_RUNNING, RUN_STATE_IO_ERROR },
610 { RUN_STATE_RUNNING, RUN_STATE_PAUSED },
611 { RUN_STATE_RUNNING, RUN_STATE_FINISH_MIGRATE },
612 { RUN_STATE_RUNNING, RUN_STATE_RESTORE_VM },
613 { RUN_STATE_RUNNING, RUN_STATE_SAVE_VM },
614 { RUN_STATE_RUNNING, RUN_STATE_SHUTDOWN },
615 { RUN_STATE_RUNNING, RUN_STATE_WATCHDOG },
616 { RUN_STATE_RUNNING, RUN_STATE_GUEST_PANICKED },
617 { RUN_STATE_RUNNING, RUN_STATE_COLO},
618
619 { RUN_STATE_SAVE_VM, RUN_STATE_RUNNING },
620
621 { RUN_STATE_SHUTDOWN, RUN_STATE_PAUSED },
622 { RUN_STATE_SHUTDOWN, RUN_STATE_FINISH_MIGRATE },
623 { RUN_STATE_SHUTDOWN, RUN_STATE_PRELAUNCH },
624
625 { RUN_STATE_DEBUG, RUN_STATE_SUSPENDED },
626 { RUN_STATE_RUNNING, RUN_STATE_SUSPENDED },
627 { RUN_STATE_SUSPENDED, RUN_STATE_RUNNING },
628 { RUN_STATE_SUSPENDED, RUN_STATE_FINISH_MIGRATE },
629 { RUN_STATE_SUSPENDED, RUN_STATE_PRELAUNCH },
630 { RUN_STATE_SUSPENDED, RUN_STATE_COLO},
631
632 { RUN_STATE_WATCHDOG, RUN_STATE_RUNNING },
633 { RUN_STATE_WATCHDOG, RUN_STATE_FINISH_MIGRATE },
634 { RUN_STATE_WATCHDOG, RUN_STATE_PRELAUNCH },
635 { RUN_STATE_WATCHDOG, RUN_STATE_COLO},
636
637 { RUN_STATE_GUEST_PANICKED, RUN_STATE_RUNNING },
638 { RUN_STATE_GUEST_PANICKED, RUN_STATE_FINISH_MIGRATE },
639 { RUN_STATE_GUEST_PANICKED, RUN_STATE_PRELAUNCH },
640
641 { RUN_STATE__MAX, RUN_STATE__MAX },
642 };
643
644 static bool runstate_valid_transitions[RUN_STATE__MAX][RUN_STATE__MAX];
645
646 bool runstate_check(RunState state)
647 {
648 return current_run_state == state;
649 }
650
651 bool runstate_store(char *str, size_t size)
652 {
653 const char *state = RunState_str(current_run_state);
654 size_t len = strlen(state) + 1;
655
656 if (len > size) {
657 return false;
658 }
659 memcpy(str, state, len);
660 return true;
661 }
662
663 static void runstate_init(void)
664 {
665 const RunStateTransition *p;
666
667 memset(&runstate_valid_transitions, 0, sizeof(runstate_valid_transitions));
668 for (p = &runstate_transitions_def[0]; p->from != RUN_STATE__MAX; p++) {
669 runstate_valid_transitions[p->from][p->to] = true;
670 }
671
672 qemu_mutex_init(&vmstop_lock);
673 }
674
675 /* This function will abort() on invalid state transitions */
676 void runstate_set(RunState new_state)
677 {
678 assert(new_state < RUN_STATE__MAX);
679
680 trace_runstate_set(current_run_state, RunState_str(current_run_state),
681 new_state, RunState_str(new_state));
682
683 if (current_run_state == new_state) {
684 return;
685 }
686
687 if (!runstate_valid_transitions[current_run_state][new_state]) {
688 error_report("invalid runstate transition: '%s' -> '%s'",
689 RunState_str(current_run_state),
690 RunState_str(new_state));
691 abort();
692 }
693
694 current_run_state = new_state;
695 }
696
697 int runstate_is_running(void)
698 {
699 return runstate_check(RUN_STATE_RUNNING);
700 }
701
702 bool runstate_needs_reset(void)
703 {
704 return runstate_check(RUN_STATE_INTERNAL_ERROR) ||
705 runstate_check(RUN_STATE_SHUTDOWN);
706 }
707
708 StatusInfo *qmp_query_status(Error **errp)
709 {
710 StatusInfo *info = g_malloc0(sizeof(*info));
711
712 info->running = runstate_is_running();
713 info->singlestep = singlestep;
714 info->status = current_run_state;
715
716 return info;
717 }
718
719 bool qemu_vmstop_requested(RunState *r)
720 {
721 qemu_mutex_lock(&vmstop_lock);
722 *r = vmstop_requested;
723 vmstop_requested = RUN_STATE__MAX;
724 qemu_mutex_unlock(&vmstop_lock);
725 return *r < RUN_STATE__MAX;
726 }
727
728 void qemu_system_vmstop_request_prepare(void)
729 {
730 qemu_mutex_lock(&vmstop_lock);
731 }
732
733 void qemu_system_vmstop_request(RunState state)
734 {
735 vmstop_requested = state;
736 qemu_mutex_unlock(&vmstop_lock);
737 qemu_notify_event();
738 }
739
740 /***********************************************************/
741 /* RTC reference time/date access */
742 static time_t qemu_ref_timedate(QEMUClockType clock)
743 {
744 time_t value = qemu_clock_get_ms(clock) / 1000;
745 switch (clock) {
746 case QEMU_CLOCK_REALTIME:
747 value -= rtc_realtime_clock_offset;
748 /* fall through */
749 case QEMU_CLOCK_VIRTUAL:
750 value += rtc_ref_start_datetime;
751 break;
752 case QEMU_CLOCK_HOST:
753 if (rtc_base_type == RTC_BASE_DATETIME) {
754 value -= rtc_host_datetime_offset;
755 }
756 break;
757 default:
758 assert(0);
759 }
760 return value;
761 }
762
763 void qemu_get_timedate(struct tm *tm, int offset)
764 {
765 time_t ti = qemu_ref_timedate(rtc_clock);
766
767 ti += offset;
768
769 switch (rtc_base_type) {
770 case RTC_BASE_DATETIME:
771 case RTC_BASE_UTC:
772 gmtime_r(&ti, tm);
773 break;
774 case RTC_BASE_LOCALTIME:
775 localtime_r(&ti, tm);
776 break;
777 }
778 }
779
780 int qemu_timedate_diff(struct tm *tm)
781 {
782 time_t seconds;
783
784 switch (rtc_base_type) {
785 case RTC_BASE_DATETIME:
786 case RTC_BASE_UTC:
787 seconds = mktimegm(tm);
788 break;
789 case RTC_BASE_LOCALTIME:
790 {
791 struct tm tmp = *tm;
792 tmp.tm_isdst = -1; /* use timezone to figure it out */
793 seconds = mktime(&tmp);
794 break;
795 }
796 default:
797 abort();
798 }
799
800 return seconds - qemu_ref_timedate(QEMU_CLOCK_HOST);
801 }
802
803 static void configure_rtc_base_datetime(const char *startdate)
804 {
805 time_t rtc_start_datetime;
806 struct tm tm;
807
808 if (sscanf(startdate, "%d-%d-%dT%d:%d:%d", &tm.tm_year, &tm.tm_mon,
809 &tm.tm_mday, &tm.tm_hour, &tm.tm_min, &tm.tm_sec) == 6) {
810 /* OK */
811 } else if (sscanf(startdate, "%d-%d-%d",
812 &tm.tm_year, &tm.tm_mon, &tm.tm_mday) == 3) {
813 tm.tm_hour = 0;
814 tm.tm_min = 0;
815 tm.tm_sec = 0;
816 } else {
817 goto date_fail;
818 }
819 tm.tm_year -= 1900;
820 tm.tm_mon--;
821 rtc_start_datetime = mktimegm(&tm);
822 if (rtc_start_datetime == -1) {
823 date_fail:
824 error_report("invalid datetime format");
825 error_printf("valid formats: "
826 "'2006-06-17T16:01:21' or '2006-06-17'\n");
827 exit(1);
828 }
829 rtc_host_datetime_offset = rtc_ref_start_datetime - rtc_start_datetime;
830 rtc_ref_start_datetime = rtc_start_datetime;
831 }
832
833 static void configure_rtc(QemuOpts *opts)
834 {
835 const char *value;
836
837 /* Set defaults */
838 rtc_clock = QEMU_CLOCK_HOST;
839 rtc_ref_start_datetime = qemu_clock_get_ms(QEMU_CLOCK_HOST) / 1000;
840 rtc_realtime_clock_offset = qemu_clock_get_ms(QEMU_CLOCK_REALTIME) / 1000;
841
842 value = qemu_opt_get(opts, "base");
843 if (value) {
844 if (!strcmp(value, "utc")) {
845 rtc_base_type = RTC_BASE_UTC;
846 } else if (!strcmp(value, "localtime")) {
847 Error *blocker = NULL;
848 rtc_base_type = RTC_BASE_LOCALTIME;
849 error_setg(&blocker, QERR_REPLAY_NOT_SUPPORTED,
850 "-rtc base=localtime");
851 replay_add_blocker(blocker);
852 } else {
853 rtc_base_type = RTC_BASE_DATETIME;
854 configure_rtc_base_datetime(value);
855 }
856 }
857 value = qemu_opt_get(opts, "clock");
858 if (value) {
859 if (!strcmp(value, "host")) {
860 rtc_clock = QEMU_CLOCK_HOST;
861 } else if (!strcmp(value, "rt")) {
862 rtc_clock = QEMU_CLOCK_REALTIME;
863 } else if (!strcmp(value, "vm")) {
864 rtc_clock = QEMU_CLOCK_VIRTUAL;
865 } else {
866 error_report("invalid option value '%s'", value);
867 exit(1);
868 }
869 }
870 value = qemu_opt_get(opts, "driftfix");
871 if (value) {
872 if (!strcmp(value, "slew")) {
873 object_register_sugar_prop("mc146818rtc",
874 "lost_tick_policy",
875 "slew");
876 } else if (!strcmp(value, "none")) {
877 /* discard is default */
878 } else {
879 error_report("invalid option value '%s'", value);
880 exit(1);
881 }
882 }
883 }
884
885 static int parse_name(void *opaque, QemuOpts *opts, Error **errp)
886 {
887 const char *proc_name;
888
889 if (qemu_opt_get(opts, "debug-threads")) {
890 qemu_thread_naming(qemu_opt_get_bool(opts, "debug-threads", false));
891 }
892 qemu_name = qemu_opt_get(opts, "guest");
893
894 proc_name = qemu_opt_get(opts, "process");
895 if (proc_name) {
896 os_set_proc_name(proc_name);
897 }
898
899 return 0;
900 }
901
902 bool defaults_enabled(void)
903 {
904 return has_defaults;
905 }
906
907 #ifndef _WIN32
908 static int parse_add_fd(void *opaque, QemuOpts *opts, Error **errp)
909 {
910 int fd, dupfd, flags;
911 int64_t fdset_id;
912 const char *fd_opaque = NULL;
913 AddfdInfo *fdinfo;
914
915 fd = qemu_opt_get_number(opts, "fd", -1);
916 fdset_id = qemu_opt_get_number(opts, "set", -1);
917 fd_opaque = qemu_opt_get(opts, "opaque");
918
919 if (fd < 0) {
920 error_setg(errp, "fd option is required and must be non-negative");
921 return -1;
922 }
923
924 if (fd <= STDERR_FILENO) {
925 error_setg(errp, "fd cannot be a standard I/O stream");
926 return -1;
927 }
928
929 /*
930 * All fds inherited across exec() necessarily have FD_CLOEXEC
931 * clear, while qemu sets FD_CLOEXEC on all other fds used internally.
932 */
933 flags = fcntl(fd, F_GETFD);
934 if (flags == -1 || (flags & FD_CLOEXEC)) {
935 error_setg(errp, "fd is not valid or already in use");
936 return -1;
937 }
938
939 if (fdset_id < 0) {
940 error_setg(errp, "set option is required and must be non-negative");
941 return -1;
942 }
943
944 #ifdef F_DUPFD_CLOEXEC
945 dupfd = fcntl(fd, F_DUPFD_CLOEXEC, 0);
946 #else
947 dupfd = dup(fd);
948 if (dupfd != -1) {
949 qemu_set_cloexec(dupfd);
950 }
951 #endif
952 if (dupfd == -1) {
953 error_setg(errp, "error duplicating fd: %s", strerror(errno));
954 return -1;
955 }
956
957 /* add the duplicate fd, and optionally the opaque string, to the fd set */
958 fdinfo = monitor_fdset_add_fd(dupfd, true, fdset_id, !!fd_opaque, fd_opaque,
959 &error_abort);
960 g_free(fdinfo);
961
962 return 0;
963 }
964
965 static int cleanup_add_fd(void *opaque, QemuOpts *opts, Error **errp)
966 {
967 int fd;
968
969 fd = qemu_opt_get_number(opts, "fd", -1);
970 close(fd);
971
972 return 0;
973 }
974 #endif
975
976 /***********************************************************/
977 /* QEMU Block devices */
978
979 #define HD_OPTS "media=disk"
980 #define CDROM_OPTS "media=cdrom"
981 #define FD_OPTS ""
982 #define PFLASH_OPTS ""
983 #define MTD_OPTS ""
984 #define SD_OPTS ""
985
986 static int drive_init_func(void *opaque, QemuOpts *opts, Error **errp)
987 {
988 BlockInterfaceType *block_default_type = opaque;
989
990 return drive_new(opts, *block_default_type, errp) == NULL;
991 }
992
993 static int drive_enable_snapshot(void *opaque, QemuOpts *opts, Error **errp)
994 {
995 if (qemu_opt_get(opts, "snapshot") == NULL) {
996 qemu_opt_set(opts, "snapshot", "on", &error_abort);
997 }
998 return 0;
999 }
1000
1001 static void default_drive(int enable, int snapshot, BlockInterfaceType type,
1002 int index, const char *optstr)
1003 {
1004 QemuOpts *opts;
1005 DriveInfo *dinfo;
1006
1007 if (!enable || drive_get_by_index(type, index)) {
1008 return;
1009 }
1010
1011 opts = drive_add(type, index, NULL, optstr);
1012 if (snapshot) {
1013 drive_enable_snapshot(NULL, opts, NULL);
1014 }
1015
1016 dinfo = drive_new(opts, type, &error_abort);
1017 dinfo->is_default = true;
1018
1019 }
1020
1021 typedef struct BlockdevOptionsQueueEntry {
1022 BlockdevOptions *bdo;
1023 Location loc;
1024 QSIMPLEQ_ENTRY(BlockdevOptionsQueueEntry) entry;
1025 } BlockdevOptionsQueueEntry;
1026
1027 typedef QSIMPLEQ_HEAD(, BlockdevOptionsQueueEntry) BlockdevOptionsQueue;
1028
1029 static void configure_blockdev(BlockdevOptionsQueue *bdo_queue,
1030 MachineClass *machine_class, int snapshot)
1031 {
1032 /*
1033 * If the currently selected machine wishes to override the
1034 * units-per-bus property of its default HBA interface type, do so
1035 * now.
1036 */
1037 if (machine_class->units_per_default_bus) {
1038 override_max_devs(machine_class->block_default_type,
1039 machine_class->units_per_default_bus);
1040 }
1041
1042 /* open the virtual block devices */
1043 while (!QSIMPLEQ_EMPTY(bdo_queue)) {
1044 BlockdevOptionsQueueEntry *bdo = QSIMPLEQ_FIRST(bdo_queue);
1045
1046 QSIMPLEQ_REMOVE_HEAD(bdo_queue, entry);
1047 loc_push_restore(&bdo->loc);
1048 qmp_blockdev_add(bdo->bdo, &error_fatal);
1049 loc_pop(&bdo->loc);
1050 qapi_free_BlockdevOptions(bdo->bdo);
1051 g_free(bdo);
1052 }
1053 if (snapshot) {
1054 qemu_opts_foreach(qemu_find_opts("drive"), drive_enable_snapshot,
1055 NULL, NULL);
1056 }
1057 if (qemu_opts_foreach(qemu_find_opts("drive"), drive_init_func,
1058 &machine_class->block_default_type, &error_fatal)) {
1059 /* We printed help */
1060 exit(0);
1061 }
1062
1063 default_drive(default_cdrom, snapshot, machine_class->block_default_type, 2,
1064 CDROM_OPTS);
1065 default_drive(default_floppy, snapshot, IF_FLOPPY, 0, FD_OPTS);
1066 default_drive(default_sdcard, snapshot, IF_SD, 0, SD_OPTS);
1067
1068 }
1069
1070 static QemuOptsList qemu_smp_opts = {
1071 .name = "smp-opts",
1072 .implied_opt_name = "cpus",
1073 .merge_lists = true,
1074 .head = QTAILQ_HEAD_INITIALIZER(qemu_smp_opts.head),
1075 .desc = {
1076 {
1077 .name = "cpus",
1078 .type = QEMU_OPT_NUMBER,
1079 }, {
1080 .name = "sockets",
1081 .type = QEMU_OPT_NUMBER,
1082 }, {
1083 .name = "dies",
1084 .type = QEMU_OPT_NUMBER,
1085 }, {
1086 .name = "cores",
1087 .type = QEMU_OPT_NUMBER,
1088 }, {
1089 .name = "threads",
1090 .type = QEMU_OPT_NUMBER,
1091 }, {
1092 .name = "maxcpus",
1093 .type = QEMU_OPT_NUMBER,
1094 },
1095 { /*End of list */ }
1096 },
1097 };
1098
1099 static void realtime_init(void)
1100 {
1101 if (enable_mlock) {
1102 if (os_mlock() < 0) {
1103 error_report("locking memory failed");
1104 exit(1);
1105 }
1106 }
1107 }
1108
1109
1110 static void configure_msg(QemuOpts *opts)
1111 {
1112 error_with_timestamp = qemu_opt_get_bool(opts, "timestamp", false);
1113 }
1114
1115
1116 /***********************************************************/
1117 /* USB devices */
1118
1119 static int usb_device_add(const char *devname)
1120 {
1121 USBDevice *dev = NULL;
1122
1123 if (!machine_usb(current_machine)) {
1124 return -1;
1125 }
1126
1127 dev = usbdevice_create(devname);
1128 if (!dev)
1129 return -1;
1130
1131 return 0;
1132 }
1133
1134 static int usb_parse(const char *cmdline)
1135 {
1136 int r;
1137 r = usb_device_add(cmdline);
1138 if (r < 0) {
1139 error_report("could not add USB device '%s'", cmdline);
1140 }
1141 return r;
1142 }
1143
1144 /***********************************************************/
1145 /* machine registration */
1146
1147 MachineState *current_machine;
1148
1149 static MachineClass *find_machine(const char *name, GSList *machines)
1150 {
1151 GSList *el;
1152
1153 for (el = machines; el; el = el->next) {
1154 MachineClass *mc = el->data;
1155
1156 if (!strcmp(mc->name, name) || !g_strcmp0(mc->alias, name)) {
1157 return mc;
1158 }
1159 }
1160
1161 return NULL;
1162 }
1163
1164 static MachineClass *find_default_machine(GSList *machines)
1165 {
1166 GSList *el;
1167 MachineClass *default_machineclass = NULL;
1168
1169 for (el = machines; el; el = el->next) {
1170 MachineClass *mc = el->data;
1171
1172 if (mc->is_default) {
1173 assert(default_machineclass == NULL && "Multiple default machines");
1174 default_machineclass = mc;
1175 }
1176 }
1177
1178 return default_machineclass;
1179 }
1180
1181 static int machine_help_func(QemuOpts *opts, MachineState *machine)
1182 {
1183 ObjectProperty *prop;
1184 ObjectPropertyIterator iter;
1185
1186 if (!qemu_opt_has_help_opt(opts)) {
1187 return 0;
1188 }
1189
1190 object_property_iter_init(&iter, OBJECT(machine));
1191 while ((prop = object_property_iter_next(&iter))) {
1192 if (!prop->set) {
1193 continue;
1194 }
1195
1196 printf("%s.%s=%s", MACHINE_GET_CLASS(machine)->name,
1197 prop->name, prop->type);
1198 if (prop->description) {
1199 printf(" (%s)\n", prop->description);
1200 } else {
1201 printf("\n");
1202 }
1203 }
1204
1205 return 1;
1206 }
1207
1208 struct VMChangeStateEntry {
1209 VMChangeStateHandler *cb;
1210 void *opaque;
1211 QTAILQ_ENTRY(VMChangeStateEntry) entries;
1212 int priority;
1213 };
1214
1215 static QTAILQ_HEAD(, VMChangeStateEntry) vm_change_state_head;
1216
1217 /**
1218 * qemu_add_vm_change_state_handler_prio:
1219 * @cb: the callback to invoke
1220 * @opaque: user data passed to the callback
1221 * @priority: low priorities execute first when the vm runs and the reverse is
1222 * true when the vm stops
1223 *
1224 * Register a callback function that is invoked when the vm starts or stops
1225 * running.
1226 *
1227 * Returns: an entry to be freed using qemu_del_vm_change_state_handler()
1228 */
1229 VMChangeStateEntry *qemu_add_vm_change_state_handler_prio(
1230 VMChangeStateHandler *cb, void *opaque, int priority)
1231 {
1232 VMChangeStateEntry *e;
1233 VMChangeStateEntry *other;
1234
1235 e = g_malloc0(sizeof(*e));
1236 e->cb = cb;
1237 e->opaque = opaque;
1238 e->priority = priority;
1239
1240 /* Keep list sorted in ascending priority order */
1241 QTAILQ_FOREACH(other, &vm_change_state_head, entries) {
1242 if (priority < other->priority) {
1243 QTAILQ_INSERT_BEFORE(other, e, entries);
1244 return e;
1245 }
1246 }
1247
1248 QTAILQ_INSERT_TAIL(&vm_change_state_head, e, entries);
1249 return e;
1250 }
1251
1252 VMChangeStateEntry *qemu_add_vm_change_state_handler(VMChangeStateHandler *cb,
1253 void *opaque)
1254 {
1255 return qemu_add_vm_change_state_handler_prio(cb, opaque, 0);
1256 }
1257
1258 void qemu_del_vm_change_state_handler(VMChangeStateEntry *e)
1259 {
1260 QTAILQ_REMOVE(&vm_change_state_head, e, entries);
1261 g_free(e);
1262 }
1263
1264 void vm_state_notify(int running, RunState state)
1265 {
1266 VMChangeStateEntry *e, *next;
1267
1268 trace_vm_state_notify(running, state, RunState_str(state));
1269
1270 if (running) {
1271 QTAILQ_FOREACH_SAFE(e, &vm_change_state_head, entries, next) {
1272 e->cb(e->opaque, running, state);
1273 }
1274 } else {
1275 QTAILQ_FOREACH_REVERSE_SAFE(e, &vm_change_state_head, entries, next) {
1276 e->cb(e->opaque, running, state);
1277 }
1278 }
1279 }
1280
1281 static ShutdownCause reset_requested;
1282 static ShutdownCause shutdown_requested;
1283 static int shutdown_signal;
1284 static pid_t shutdown_pid;
1285 static int powerdown_requested;
1286 static int debug_requested;
1287 static int suspend_requested;
1288 static bool preconfig_exit_requested = true;
1289 static WakeupReason wakeup_reason;
1290 static NotifierList powerdown_notifiers =
1291 NOTIFIER_LIST_INITIALIZER(powerdown_notifiers);
1292 static NotifierList suspend_notifiers =
1293 NOTIFIER_LIST_INITIALIZER(suspend_notifiers);
1294 static NotifierList wakeup_notifiers =
1295 NOTIFIER_LIST_INITIALIZER(wakeup_notifiers);
1296 static NotifierList shutdown_notifiers =
1297 NOTIFIER_LIST_INITIALIZER(shutdown_notifiers);
1298 static uint32_t wakeup_reason_mask = ~(1 << QEMU_WAKEUP_REASON_NONE);
1299
1300 ShutdownCause qemu_shutdown_requested_get(void)
1301 {
1302 return shutdown_requested;
1303 }
1304
1305 ShutdownCause qemu_reset_requested_get(void)
1306 {
1307 return reset_requested;
1308 }
1309
1310 static int qemu_shutdown_requested(void)
1311 {
1312 return atomic_xchg(&shutdown_requested, SHUTDOWN_CAUSE_NONE);
1313 }
1314
1315 static void qemu_kill_report(void)
1316 {
1317 if (!qtest_driver() && shutdown_signal) {
1318 if (shutdown_pid == 0) {
1319 /* This happens for eg ^C at the terminal, so it's worth
1320 * avoiding printing an odd message in that case.
1321 */
1322 error_report("terminating on signal %d", shutdown_signal);
1323 } else {
1324 char *shutdown_cmd = qemu_get_pid_name(shutdown_pid);
1325
1326 error_report("terminating on signal %d from pid " FMT_pid " (%s)",
1327 shutdown_signal, shutdown_pid,
1328 shutdown_cmd ? shutdown_cmd : "<unknown process>");
1329 g_free(shutdown_cmd);
1330 }
1331 shutdown_signal = 0;
1332 }
1333 }
1334
1335 static ShutdownCause qemu_reset_requested(void)
1336 {
1337 ShutdownCause r = reset_requested;
1338
1339 if (r && replay_checkpoint(CHECKPOINT_RESET_REQUESTED)) {
1340 reset_requested = SHUTDOWN_CAUSE_NONE;
1341 return r;
1342 }
1343 return SHUTDOWN_CAUSE_NONE;
1344 }
1345
1346 static int qemu_suspend_requested(void)
1347 {
1348 int r = suspend_requested;
1349 if (r && replay_checkpoint(CHECKPOINT_SUSPEND_REQUESTED)) {
1350 suspend_requested = 0;
1351 return r;
1352 }
1353 return false;
1354 }
1355
1356 static WakeupReason qemu_wakeup_requested(void)
1357 {
1358 return wakeup_reason;
1359 }
1360
1361 static int qemu_powerdown_requested(void)
1362 {
1363 int r = powerdown_requested;
1364 powerdown_requested = 0;
1365 return r;
1366 }
1367
1368 static int qemu_debug_requested(void)
1369 {
1370 int r = debug_requested;
1371 debug_requested = 0;
1372 return r;
1373 }
1374
1375 void qemu_exit_preconfig_request(void)
1376 {
1377 preconfig_exit_requested = true;
1378 }
1379
1380 /*
1381 * Reset the VM. Issue an event unless @reason is SHUTDOWN_CAUSE_NONE.
1382 */
1383 void qemu_system_reset(ShutdownCause reason)
1384 {
1385 MachineClass *mc;
1386
1387 mc = current_machine ? MACHINE_GET_CLASS(current_machine) : NULL;
1388
1389 cpu_synchronize_all_states();
1390
1391 if (mc && mc->reset) {
1392 mc->reset(current_machine);
1393 } else {
1394 qemu_devices_reset();
1395 }
1396 if (reason && reason != SHUTDOWN_CAUSE_SUBSYSTEM_RESET) {
1397 qapi_event_send_reset(shutdown_caused_by_guest(reason), reason);
1398 }
1399 cpu_synchronize_all_post_reset();
1400 }
1401
1402 /*
1403 * Wake the VM after suspend.
1404 */
1405 static void qemu_system_wakeup(void)
1406 {
1407 MachineClass *mc;
1408
1409 mc = current_machine ? MACHINE_GET_CLASS(current_machine) : NULL;
1410
1411 if (mc && mc->wakeup) {
1412 mc->wakeup(current_machine);
1413 }
1414 }
1415
1416 void qemu_system_guest_panicked(GuestPanicInformation *info)
1417 {
1418 qemu_log_mask(LOG_GUEST_ERROR, "Guest crashed");
1419
1420 if (current_cpu) {
1421 current_cpu->crash_occurred = true;
1422 }
1423 qapi_event_send_guest_panicked(GUEST_PANIC_ACTION_PAUSE,
1424 !!info, info);
1425 vm_stop(RUN_STATE_GUEST_PANICKED);
1426 if (!no_shutdown) {
1427 qapi_event_send_guest_panicked(GUEST_PANIC_ACTION_POWEROFF,
1428 !!info, info);
1429 qemu_system_shutdown_request(SHUTDOWN_CAUSE_GUEST_PANIC);
1430 }
1431
1432 if (info) {
1433 if (info->type == GUEST_PANIC_INFORMATION_TYPE_HYPER_V) {
1434 qemu_log_mask(LOG_GUEST_ERROR, "\nHV crash parameters: (%#"PRIx64
1435 " %#"PRIx64" %#"PRIx64" %#"PRIx64" %#"PRIx64")\n",
1436 info->u.hyper_v.arg1,
1437 info->u.hyper_v.arg2,
1438 info->u.hyper_v.arg3,
1439 info->u.hyper_v.arg4,
1440 info->u.hyper_v.arg5);
1441 } else if (info->type == GUEST_PANIC_INFORMATION_TYPE_S390) {
1442 qemu_log_mask(LOG_GUEST_ERROR, " on cpu %d: %s\n"
1443 "PSW: 0x%016" PRIx64 " 0x%016" PRIx64"\n",
1444 info->u.s390.core,
1445 S390CrashReason_str(info->u.s390.reason),
1446 info->u.s390.psw_mask,
1447 info->u.s390.psw_addr);
1448 }
1449 qapi_free_GuestPanicInformation(info);
1450 }
1451 }
1452
1453 void qemu_system_guest_crashloaded(GuestPanicInformation *info)
1454 {
1455 qemu_log_mask(LOG_GUEST_ERROR, "Guest crash loaded");
1456
1457 qapi_event_send_guest_crashloaded(GUEST_PANIC_ACTION_RUN,
1458 !!info, info);
1459
1460 if (info) {
1461 qapi_free_GuestPanicInformation(info);
1462 }
1463 }
1464
1465 void qemu_system_reset_request(ShutdownCause reason)
1466 {
1467 if (no_reboot && reason != SHUTDOWN_CAUSE_SUBSYSTEM_RESET) {
1468 shutdown_requested = reason;
1469 } else {
1470 reset_requested = reason;
1471 }
1472 cpu_stop_current();
1473 qemu_notify_event();
1474 }
1475
1476 static void qemu_system_suspend(void)
1477 {
1478 pause_all_vcpus();
1479 notifier_list_notify(&suspend_notifiers, NULL);
1480 runstate_set(RUN_STATE_SUSPENDED);
1481 qapi_event_send_suspend();
1482 }
1483
1484 void qemu_system_suspend_request(void)
1485 {
1486 if (runstate_check(RUN_STATE_SUSPENDED)) {
1487 return;
1488 }
1489 suspend_requested = 1;
1490 cpu_stop_current();
1491 qemu_notify_event();
1492 }
1493
1494 void qemu_register_suspend_notifier(Notifier *notifier)
1495 {
1496 notifier_list_add(&suspend_notifiers, notifier);
1497 }
1498
1499 void qemu_system_wakeup_request(WakeupReason reason, Error **errp)
1500 {
1501 trace_system_wakeup_request(reason);
1502
1503 if (!runstate_check(RUN_STATE_SUSPENDED)) {
1504 error_setg(errp,
1505 "Unable to wake up: guest is not in suspended state");
1506 return;
1507 }
1508 if (!(wakeup_reason_mask & (1 << reason))) {
1509 return;
1510 }
1511 runstate_set(RUN_STATE_RUNNING);
1512 wakeup_reason = reason;
1513 qemu_notify_event();
1514 }
1515
1516 void qemu_system_wakeup_enable(WakeupReason reason, bool enabled)
1517 {
1518 if (enabled) {
1519 wakeup_reason_mask |= (1 << reason);
1520 } else {
1521 wakeup_reason_mask &= ~(1 << reason);
1522 }
1523 }
1524
1525 void qemu_register_wakeup_notifier(Notifier *notifier)
1526 {
1527 notifier_list_add(&wakeup_notifiers, notifier);
1528 }
1529
1530 void qemu_register_wakeup_support(void)
1531 {
1532 wakeup_suspend_enabled = true;
1533 }
1534
1535 bool qemu_wakeup_suspend_enabled(void)
1536 {
1537 return wakeup_suspend_enabled;
1538 }
1539
1540 void qemu_system_killed(int signal, pid_t pid)
1541 {
1542 shutdown_signal = signal;
1543 shutdown_pid = pid;
1544 no_shutdown = 0;
1545
1546 /* Cannot call qemu_system_shutdown_request directly because
1547 * we are in a signal handler.
1548 */
1549 shutdown_requested = SHUTDOWN_CAUSE_HOST_SIGNAL;
1550 qemu_notify_event();
1551 }
1552
1553 void qemu_system_shutdown_request(ShutdownCause reason)
1554 {
1555 trace_qemu_system_shutdown_request(reason);
1556 replay_shutdown_request(reason);
1557 shutdown_requested = reason;
1558 qemu_notify_event();
1559 }
1560
1561 static void qemu_system_powerdown(void)
1562 {
1563 qapi_event_send_powerdown();
1564 notifier_list_notify(&powerdown_notifiers, NULL);
1565 }
1566
1567 static void qemu_system_shutdown(ShutdownCause cause)
1568 {
1569 qapi_event_send_shutdown(shutdown_caused_by_guest(cause), cause);
1570 notifier_list_notify(&shutdown_notifiers, &cause);
1571 }
1572
1573 void qemu_system_powerdown_request(void)
1574 {
1575 trace_qemu_system_powerdown_request();
1576 powerdown_requested = 1;
1577 qemu_notify_event();
1578 }
1579
1580 void qemu_register_powerdown_notifier(Notifier *notifier)
1581 {
1582 notifier_list_add(&powerdown_notifiers, notifier);
1583 }
1584
1585 void qemu_register_shutdown_notifier(Notifier *notifier)
1586 {
1587 notifier_list_add(&shutdown_notifiers, notifier);
1588 }
1589
1590 void qemu_system_debug_request(void)
1591 {
1592 debug_requested = 1;
1593 qemu_notify_event();
1594 }
1595
1596 static bool main_loop_should_exit(void)
1597 {
1598 RunState r;
1599 ShutdownCause request;
1600
1601 if (preconfig_exit_requested) {
1602 if (runstate_check(RUN_STATE_PRECONFIG)) {
1603 runstate_set(RUN_STATE_PRELAUNCH);
1604 }
1605 preconfig_exit_requested = false;
1606 return true;
1607 }
1608 if (qemu_debug_requested()) {
1609 vm_stop(RUN_STATE_DEBUG);
1610 }
1611 if (qemu_suspend_requested()) {
1612 qemu_system_suspend();
1613 }
1614 request = qemu_shutdown_requested();
1615 if (request) {
1616 qemu_kill_report();
1617 qemu_system_shutdown(request);
1618 if (no_shutdown) {
1619 vm_stop(RUN_STATE_SHUTDOWN);
1620 } else {
1621 return true;
1622 }
1623 }
1624 request = qemu_reset_requested();
1625 if (request) {
1626 pause_all_vcpus();
1627 qemu_system_reset(request);
1628 resume_all_vcpus();
1629 /*
1630 * runstate can change in pause_all_vcpus()
1631 * as iothread mutex is unlocked
1632 */
1633 if (!runstate_check(RUN_STATE_RUNNING) &&
1634 !runstate_check(RUN_STATE_INMIGRATE) &&
1635 !runstate_check(RUN_STATE_FINISH_MIGRATE)) {
1636 runstate_set(RUN_STATE_PRELAUNCH);
1637 }
1638 }
1639 if (qemu_wakeup_requested()) {
1640 pause_all_vcpus();
1641 qemu_system_wakeup();
1642 notifier_list_notify(&wakeup_notifiers, &wakeup_reason);
1643 wakeup_reason = QEMU_WAKEUP_REASON_NONE;
1644 resume_all_vcpus();
1645 qapi_event_send_wakeup();
1646 }
1647 if (qemu_powerdown_requested()) {
1648 qemu_system_powerdown();
1649 }
1650 if (qemu_vmstop_requested(&r)) {
1651 vm_stop(r);
1652 }
1653 return false;
1654 }
1655
1656 void qemu_main_loop(void)
1657 {
1658 #ifdef CONFIG_PROFILER
1659 int64_t ti;
1660 #endif
1661 while (!main_loop_should_exit()) {
1662 #ifdef CONFIG_PROFILER
1663 ti = profile_getclock();
1664 #endif
1665 main_loop_wait(false);
1666 #ifdef CONFIG_PROFILER
1667 dev_time += profile_getclock() - ti;
1668 #endif
1669 }
1670 }
1671
1672 static void version(void)
1673 {
1674 printf("QEMU emulator version " QEMU_FULL_VERSION "\n"
1675 QEMU_COPYRIGHT "\n");
1676 }
1677
1678 static void help(int exitcode)
1679 {
1680 version();
1681 printf("usage: %s [options] [disk_image]\n\n"
1682 "'disk_image' is a raw hard disk image for IDE hard disk 0\n\n",
1683 error_get_progname());
1684
1685 #define QEMU_OPTIONS_GENERATE_HELP
1686 #include "qemu-options-wrapper.h"
1687
1688 printf("\nDuring emulation, the following keys are useful:\n"
1689 "ctrl-alt-f toggle full screen\n"
1690 "ctrl-alt-n switch to virtual console 'n'\n"
1691 "ctrl-alt toggle mouse and keyboard grab\n"
1692 "\n"
1693 "When using -nographic, press 'ctrl-a h' to get some help.\n"
1694 "\n"
1695 QEMU_HELP_BOTTOM "\n");
1696
1697 exit(exitcode);
1698 }
1699
1700 #define HAS_ARG 0x0001
1701
1702 typedef struct QEMUOption {
1703 const char *name;
1704 int flags;
1705 int index;
1706 uint32_t arch_mask;
1707 } QEMUOption;
1708
1709 static const QEMUOption qemu_options[] = {
1710 { "h", 0, QEMU_OPTION_h, QEMU_ARCH_ALL },
1711 #define QEMU_OPTIONS_GENERATE_OPTIONS
1712 #include "qemu-options-wrapper.h"
1713 { NULL },
1714 };
1715
1716 typedef struct VGAInterfaceInfo {
1717 const char *opt_name; /* option name */
1718 const char *name; /* human-readable name */
1719 /* Class names indicating that support is available.
1720 * If no class is specified, the interface is always available */
1721 const char *class_names[2];
1722 } VGAInterfaceInfo;
1723
1724 static const VGAInterfaceInfo vga_interfaces[VGA_TYPE_MAX] = {
1725 [VGA_NONE] = {
1726 .opt_name = "none",
1727 .name = "no graphic card",
1728 },
1729 [VGA_STD] = {
1730 .opt_name = "std",
1731 .name = "standard VGA",
1732 .class_names = { "VGA", "isa-vga" },
1733 },
1734 [VGA_CIRRUS] = {
1735 .opt_name = "cirrus",
1736 .name = "Cirrus VGA",
1737 .class_names = { "cirrus-vga", "isa-cirrus-vga" },
1738 },
1739 [VGA_VMWARE] = {
1740 .opt_name = "vmware",
1741 .name = "VMWare SVGA",
1742 .class_names = { "vmware-svga" },
1743 },
1744 [VGA_VIRTIO] = {
1745 .opt_name = "virtio",
1746 .name = "Virtio VGA",
1747 .class_names = { "virtio-vga" },
1748 },
1749 [VGA_QXL] = {
1750 .opt_name = "qxl",
1751 .name = "QXL VGA",
1752 .class_names = { "qxl-vga" },
1753 },
1754 [VGA_TCX] = {
1755 .opt_name = "tcx",
1756 .name = "TCX framebuffer",
1757 .class_names = { "SUNW,tcx" },
1758 },
1759 [VGA_CG3] = {
1760 .opt_name = "cg3",
1761 .name = "CG3 framebuffer",
1762 .class_names = { "cgthree" },
1763 },
1764 [VGA_XENFB] = {
1765 .opt_name = "xenfb",
1766 .name = "Xen paravirtualized framebuffer",
1767 },
1768 };
1769
1770 static bool vga_interface_available(VGAInterfaceType t)
1771 {
1772 const VGAInterfaceInfo *ti = &vga_interfaces[t];
1773
1774 assert(t < VGA_TYPE_MAX);
1775 return !ti->class_names[0] ||
1776 object_class_by_name(ti->class_names[0]) ||
1777 object_class_by_name(ti->class_names[1]);
1778 }
1779
1780 static const char *
1781 get_default_vga_model(const MachineClass *machine_class)
1782 {
1783 if (machine_class->default_display) {
1784 return machine_class->default_display;
1785 } else if (vga_interface_available(VGA_CIRRUS)) {
1786 return "cirrus";
1787 } else if (vga_interface_available(VGA_STD)) {
1788 return "std";
1789 }
1790
1791 return NULL;
1792 }
1793
1794 static void select_vgahw(const MachineClass *machine_class, const char *p)
1795 {
1796 const char *opts;
1797 int t;
1798
1799 if (g_str_equal(p, "help")) {
1800 const char *def = get_default_vga_model(machine_class);
1801
1802 for (t = 0; t < VGA_TYPE_MAX; t++) {
1803 const VGAInterfaceInfo *ti = &vga_interfaces[t];
1804
1805 if (vga_interface_available(t) && ti->opt_name) {
1806 printf("%-20s %s%s\n", ti->opt_name, ti->name ?: "",
1807 g_str_equal(ti->opt_name, def) ? " (default)" : "");
1808 }
1809 }
1810 exit(0);
1811 }
1812
1813 assert(vga_interface_type == VGA_NONE);
1814 for (t = 0; t < VGA_TYPE_MAX; t++) {
1815 const VGAInterfaceInfo *ti = &vga_interfaces[t];
1816 if (ti->opt_name && strstart(p, ti->opt_name, &opts)) {
1817 if (!vga_interface_available(t)) {
1818 error_report("%s not available", ti->name);
1819 exit(1);
1820 }
1821 vga_interface_type = t;
1822 break;
1823 }
1824 }
1825 if (t == VGA_TYPE_MAX) {
1826 invalid_vga:
1827 error_report("unknown vga type: %s", p);
1828 exit(1);
1829 }
1830 while (*opts) {
1831 const char *nextopt;
1832
1833 if (strstart(opts, ",retrace=", &nextopt)) {
1834 opts = nextopt;
1835 if (strstart(opts, "dumb", &nextopt))
1836 vga_retrace_method = VGA_RETRACE_DUMB;
1837 else if (strstart(opts, "precise", &nextopt))
1838 vga_retrace_method = VGA_RETRACE_PRECISE;
1839 else goto invalid_vga;
1840 } else goto invalid_vga;
1841 opts = nextopt;
1842 }
1843 }
1844
1845 static void parse_display_qapi(const char *optarg)
1846 {
1847 DisplayOptions *opts;
1848 Visitor *v;
1849
1850 v = qobject_input_visitor_new_str(optarg, "type", &error_fatal);
1851
1852 visit_type_DisplayOptions(v, NULL, &opts, &error_fatal);
1853 QAPI_CLONE_MEMBERS(DisplayOptions, &dpy, opts);
1854
1855 qapi_free_DisplayOptions(opts);
1856 visit_free(v);
1857 }
1858
1859 DisplayOptions *qmp_query_display_options(Error **errp)
1860 {
1861 return QAPI_CLONE(DisplayOptions, &dpy);
1862 }
1863
1864 static void parse_display(const char *p)
1865 {
1866 const char *opts;
1867
1868 if (is_help_option(p)) {
1869 qemu_display_help();
1870 exit(0);
1871 }
1872
1873 if (strstart(p, "sdl", &opts)) {
1874 /*
1875 * sdl DisplayType needs hand-crafted parser instead of
1876 * parse_display_qapi() due to some options not in
1877 * DisplayOptions, specifically:
1878 * - frame
1879 * Already deprecated.
1880 * - ctrl_grab + alt_grab
1881 * Not clear yet what happens to them long-term. Should
1882 * replaced by something better or deprecated and dropped.
1883 */
1884 dpy.type = DISPLAY_TYPE_SDL;
1885 while (*opts) {
1886 const char *nextopt;
1887
1888 if (strstart(opts, ",alt_grab=", &nextopt)) {
1889 opts = nextopt;
1890 if (strstart(opts, "on", &nextopt)) {
1891 alt_grab = 1;
1892 } else if (strstart(opts, "off", &nextopt)) {
1893 alt_grab = 0;
1894 } else {
1895 goto invalid_sdl_args;
1896 }
1897 } else if (strstart(opts, ",ctrl_grab=", &nextopt)) {
1898 opts = nextopt;
1899 if (strstart(opts, "on", &nextopt)) {
1900 ctrl_grab = 1;
1901 } else if (strstart(opts, "off", &nextopt)) {
1902 ctrl_grab = 0;
1903 } else {
1904 goto invalid_sdl_args;
1905 }
1906 } else if (strstart(opts, ",window_close=", &nextopt)) {
1907 opts = nextopt;
1908 dpy.has_window_close = true;
1909 if (strstart(opts, "on", &nextopt)) {
1910 dpy.window_close = true;
1911 } else if (strstart(opts, "off", &nextopt)) {
1912 dpy.window_close = false;
1913 } else {
1914 goto invalid_sdl_args;
1915 }
1916 } else if (strstart(opts, ",show-cursor=", &nextopt)) {
1917 opts = nextopt;
1918 dpy.has_show_cursor = true;
1919 if (strstart(opts, "on", &nextopt)) {
1920 dpy.show_cursor = true;
1921 } else if (strstart(opts, "off", &nextopt)) {
1922 dpy.show_cursor = false;
1923 } else {
1924 goto invalid_sdl_args;
1925 }
1926 } else if (strstart(opts, ",gl=", &nextopt)) {
1927 opts = nextopt;
1928 dpy.has_gl = true;
1929 if (strstart(opts, "on", &nextopt)) {
1930 dpy.gl = DISPLAYGL_MODE_ON;
1931 } else if (strstart(opts, "core", &nextopt)) {
1932 dpy.gl = DISPLAYGL_MODE_CORE;
1933 } else if (strstart(opts, "es", &nextopt)) {
1934 dpy.gl = DISPLAYGL_MODE_ES;
1935 } else if (strstart(opts, "off", &nextopt)) {
1936 dpy.gl = DISPLAYGL_MODE_OFF;
1937 } else {
1938 goto invalid_sdl_args;
1939 }
1940 } else {
1941 invalid_sdl_args:
1942 error_report("invalid SDL option string");
1943 exit(1);
1944 }
1945 opts = nextopt;
1946 }
1947 } else if (strstart(p, "vnc", &opts)) {
1948 /*
1949 * vnc isn't a (local) DisplayType but a protocol for remote
1950 * display access.
1951 */
1952 if (*opts == '=') {
1953 vnc_parse(opts + 1, &error_fatal);
1954 } else {
1955 error_report("VNC requires a display argument vnc=<display>");
1956 exit(1);
1957 }
1958 } else {
1959 parse_display_qapi(p);
1960 }
1961 }
1962
1963 char *qemu_find_file(int type, const char *name)
1964 {
1965 int i;
1966 const char *subdir;
1967 char *buf;
1968
1969 /* Try the name as a straight path first */
1970 if (access(name, R_OK) == 0) {
1971 trace_load_file(name, name);
1972 return g_strdup(name);
1973 }
1974
1975 switch (type) {
1976 case QEMU_FILE_TYPE_BIOS:
1977 subdir = "";
1978 break;
1979 case QEMU_FILE_TYPE_KEYMAP:
1980 subdir = "keymaps/";
1981 break;
1982 default:
1983 abort();
1984 }
1985
1986 for (i = 0; i < data_dir_idx; i++) {
1987 buf = g_strdup_printf("%s/%s%s", data_dir[i], subdir, name);
1988 if (access(buf, R_OK) == 0) {
1989 trace_load_file(name, buf);
1990 return buf;
1991 }
1992 g_free(buf);
1993 }
1994 return NULL;
1995 }
1996
1997 static void qemu_add_data_dir(const char *path)
1998 {
1999 int i;
2000
2001 if (path == NULL) {
2002 return;
2003 }
2004 if (data_dir_idx == ARRAY_SIZE(data_dir)) {
2005 return;
2006 }
2007 for (i = 0; i < data_dir_idx; i++) {
2008 if (strcmp(data_dir[i], path) == 0) {
2009 return; /* duplicate */
2010 }
2011 }
2012 data_dir[data_dir_idx++] = g_strdup(path);
2013 }
2014
2015 static inline bool nonempty_str(const char *str)
2016 {
2017 return str && *str;
2018 }
2019
2020 static int parse_fw_cfg(void *opaque, QemuOpts *opts, Error **errp)
2021 {
2022 gchar *buf;
2023 size_t size;
2024 const char *name, *file, *str;
2025 FWCfgState *fw_cfg = (FWCfgState *) opaque;
2026
2027 if (fw_cfg == NULL) {
2028 error_setg(errp, "fw_cfg device not available");
2029 return -1;
2030 }
2031 name = qemu_opt_get(opts, "name");
2032 file = qemu_opt_get(opts, "file");
2033 str = qemu_opt_get(opts, "string");
2034
2035 /* we need name and either a file or the content string */
2036 if (!(nonempty_str(name) && (nonempty_str(file) || nonempty_str(str)))) {
2037 error_setg(errp, "invalid argument(s)");
2038 return -1;
2039 }
2040 if (nonempty_str(file) && nonempty_str(str)) {
2041 error_setg(errp, "file and string are mutually exclusive");
2042 return -1;
2043 }
2044 if (strlen(name) > FW_CFG_MAX_FILE_PATH - 1) {
2045 error_setg(errp, "name too long (max. %d char)",
2046 FW_CFG_MAX_FILE_PATH - 1);
2047 return -1;
2048 }
2049 if (strncmp(name, "opt/", 4) != 0) {
2050 warn_report("externally provided fw_cfg item names "
2051 "should be prefixed with \"opt/\"");
2052 }
2053 if (nonempty_str(str)) {
2054 size = strlen(str); /* NUL terminator NOT included in fw_cfg blob */
2055 buf = g_memdup(str, size);
2056 } else {
2057 GError *err = NULL;
2058 if (!g_file_get_contents(file, &buf, &size, &err)) {
2059 error_setg(errp, "can't load %s: %s", file, err->message);
2060 g_error_free(err);
2061 return -1;
2062 }
2063 }
2064 /* For legacy, keep user files in a specific global order. */
2065 fw_cfg_set_order_override(fw_cfg, FW_CFG_ORDER_OVERRIDE_USER);
2066 fw_cfg_add_file(fw_cfg, name, buf, size);
2067 fw_cfg_reset_order_override(fw_cfg);
2068 return 0;
2069 }
2070
2071 static int device_help_func(void *opaque, QemuOpts *opts, Error **errp)
2072 {
2073 return qdev_device_help(opts);
2074 }
2075
2076 static int device_init_func(void *opaque, QemuOpts *opts, Error **errp)
2077 {
2078 DeviceState *dev;
2079
2080 dev = qdev_device_add(opts, errp);
2081 if (!dev && *errp) {
2082 error_report_err(*errp);
2083 return -1;
2084 } else if (dev) {
2085 object_unref(OBJECT(dev));
2086 }
2087 return 0;
2088 }
2089
2090 static int chardev_init_func(void *opaque, QemuOpts *opts, Error **errp)
2091 {
2092 Error *local_err = NULL;
2093
2094 if (!qemu_chr_new_from_opts(opts, NULL, &local_err)) {
2095 if (local_err) {
2096 error_propagate(errp, local_err);
2097 return -1;
2098 }
2099 exit(0);
2100 }
2101 return 0;
2102 }
2103
2104 #ifdef CONFIG_VIRTFS
2105 static int fsdev_init_func(void *opaque, QemuOpts *opts, Error **errp)
2106 {
2107 return qemu_fsdev_add(opts, errp);
2108 }
2109 #endif
2110
2111 static int mon_init_func(void *opaque, QemuOpts *opts, Error **errp)
2112 {
2113 return monitor_init_opts(opts, errp);
2114 }
2115
2116 static void monitor_parse(const char *optarg, const char *mode, bool pretty)
2117 {
2118 static int monitor_device_index = 0;
2119 QemuOpts *opts;
2120 const char *p;
2121 char label[32];
2122
2123 if (strstart(optarg, "chardev:", &p)) {
2124 snprintf(label, sizeof(label), "%s", p);
2125 } else {
2126 snprintf(label, sizeof(label), "compat_monitor%d",
2127 monitor_device_index);
2128 opts = qemu_chr_parse_compat(label, optarg, true);
2129 if (!opts) {
2130 error_report("parse error: %s", optarg);
2131 exit(1);
2132 }
2133 }
2134
2135 opts = qemu_opts_create(qemu_find_opts("mon"), label, 1, &error_fatal);
2136 qemu_opt_set(opts, "mode", mode, &error_abort);
2137 qemu_opt_set(opts, "chardev", label, &error_abort);
2138 if (!strcmp(mode, "control")) {
2139 qemu_opt_set_bool(opts, "pretty", pretty, &error_abort);
2140 } else {
2141 assert(pretty == false);
2142 }
2143 monitor_device_index++;
2144 }
2145
2146 struct device_config {
2147 enum {
2148 DEV_USB, /* -usbdevice */
2149 DEV_SERIAL, /* -serial */
2150 DEV_PARALLEL, /* -parallel */
2151 DEV_DEBUGCON, /* -debugcon */
2152 DEV_GDB, /* -gdb, -s */
2153 DEV_SCLP, /* s390 sclp */
2154 } type;
2155 const char *cmdline;
2156 Location loc;
2157 QTAILQ_ENTRY(device_config) next;
2158 };
2159
2160 static QTAILQ_HEAD(, device_config) device_configs =
2161 QTAILQ_HEAD_INITIALIZER(device_configs);
2162
2163 static void add_device_config(int type, const char *cmdline)
2164 {
2165 struct device_config *conf;
2166
2167 conf = g_malloc0(sizeof(*conf));
2168 conf->type = type;
2169 conf->cmdline = cmdline;
2170 loc_save(&conf->loc);
2171 QTAILQ_INSERT_TAIL(&device_configs, conf, next);
2172 }
2173
2174 static int foreach_device_config(int type, int (*func)(const char *cmdline))
2175 {
2176 struct device_config *conf;
2177 int rc;
2178
2179 QTAILQ_FOREACH(conf, &device_configs, next) {
2180 if (conf->type != type)
2181 continue;
2182 loc_push_restore(&conf->loc);
2183 rc = func(conf->cmdline);
2184 loc_pop(&conf->loc);
2185 if (rc) {
2186 return rc;
2187 }
2188 }
2189 return 0;
2190 }
2191
2192 static int serial_parse(const char *devname)
2193 {
2194 int index = num_serial_hds;
2195 char label[32];
2196
2197 if (strcmp(devname, "none") == 0)
2198 return 0;
2199 snprintf(label, sizeof(label), "serial%d", index);
2200 serial_hds = g_renew(Chardev *, serial_hds, index + 1);
2201
2202 serial_hds[index] = qemu_chr_new_mux_mon(label, devname, NULL);
2203 if (!serial_hds[index]) {
2204 error_report("could not connect serial device"
2205 " to character backend '%s'", devname);
2206 return -1;
2207 }
2208 num_serial_hds++;
2209 return 0;
2210 }
2211
2212 Chardev *serial_hd(int i)
2213 {
2214 assert(i >= 0);
2215 if (i < num_serial_hds) {
2216 return serial_hds[i];
2217 }
2218 return NULL;
2219 }
2220
2221 int serial_max_hds(void)
2222 {
2223 return num_serial_hds;
2224 }
2225
2226 static int parallel_parse(const char *devname)
2227 {
2228 static int index = 0;
2229 char label[32];
2230
2231 if (strcmp(devname, "none") == 0)
2232 return 0;
2233 if (index == MAX_PARALLEL_PORTS) {
2234 error_report("too many parallel ports");
2235 exit(1);
2236 }
2237 snprintf(label, sizeof(label), "parallel%d", index);
2238 parallel_hds[index] = qemu_chr_new_mux_mon(label, devname, NULL);
2239 if (!parallel_hds[index]) {
2240 error_report("could not connect parallel device"
2241 " to character backend '%s'", devname);
2242 return -1;
2243 }
2244 index++;
2245 return 0;
2246 }
2247
2248 static int debugcon_parse(const char *devname)
2249 {
2250 QemuOpts *opts;
2251
2252 if (!qemu_chr_new_mux_mon("debugcon", devname, NULL)) {
2253 error_report("invalid character backend '%s'", devname);
2254 exit(1);
2255 }
2256 opts = qemu_opts_create(qemu_find_opts("device"), "debugcon", 1, NULL);
2257 if (!opts) {
2258 error_report("already have a debugcon device");
2259 exit(1);
2260 }
2261 qemu_opt_set(opts, "driver", "isa-debugcon", &error_abort);
2262 qemu_opt_set(opts, "chardev", "debugcon", &error_abort);
2263 return 0;
2264 }
2265
2266 static gint machine_class_cmp(gconstpointer a, gconstpointer b)
2267 {
2268 const MachineClass *mc1 = a, *mc2 = b;
2269 int res;
2270
2271 if (mc1->family == NULL) {
2272 if (mc2->family == NULL) {
2273 /* Compare standalone machine types against each other; they sort
2274 * in increasing order.
2275 */
2276 return strcmp(object_class_get_name(OBJECT_CLASS(mc1)),
2277 object_class_get_name(OBJECT_CLASS(mc2)));
2278 }
2279
2280 /* Standalone machine types sort after families. */
2281 return 1;
2282 }
2283
2284 if (mc2->family == NULL) {
2285 /* Families sort before standalone machine types. */
2286 return -1;
2287 }
2288
2289 /* Families sort between each other alphabetically increasingly. */
2290 res = strcmp(mc1->family, mc2->family);
2291 if (res != 0) {
2292 return res;
2293 }
2294
2295 /* Within the same family, machine types sort in decreasing order. */
2296 return strcmp(object_class_get_name(OBJECT_CLASS(mc2)),
2297 object_class_get_name(OBJECT_CLASS(mc1)));
2298 }
2299
2300 static MachineClass *machine_parse(const char *name, GSList *machines)
2301 {
2302 MachineClass *mc;
2303 GSList *el;
2304
2305 if (is_help_option(name)) {
2306 printf("Supported machines are:\n");
2307 machines = g_slist_sort(machines, machine_class_cmp);
2308 for (el = machines; el; el = el->next) {
2309 MachineClass *mc = el->data;
2310 if (mc->alias) {
2311 printf("%-20s %s (alias of %s)\n", mc->alias, mc->desc, mc->name);
2312 }
2313 printf("%-20s %s%s%s\n", mc->name, mc->desc,
2314 mc->is_default ? " (default)" : "",
2315 mc->deprecation_reason ? " (deprecated)" : "");
2316 }
2317 exit(0);
2318 }
2319
2320 mc = find_machine(name, machines);
2321 if (!mc) {
2322 error_report("unsupported machine type");
2323 error_printf("Use -machine help to list supported machines\n");
2324 exit(1);
2325 }
2326 return mc;
2327 }
2328
2329 void qemu_add_exit_notifier(Notifier *notify)
2330 {
2331 notifier_list_add(&exit_notifiers, notify);
2332 }
2333
2334 void qemu_remove_exit_notifier(Notifier *notify)
2335 {
2336 notifier_remove(notify);
2337 }
2338
2339 static void qemu_run_exit_notifiers(void)
2340 {
2341 notifier_list_notify(&exit_notifiers, NULL);
2342 }
2343
2344 static const char *pid_file;
2345 static Notifier qemu_unlink_pidfile_notifier;
2346
2347 static void qemu_unlink_pidfile(Notifier *n, void *data)
2348 {
2349 if (pid_file) {
2350 unlink(pid_file);
2351 }
2352 }
2353
2354 bool machine_init_done;
2355
2356 void qemu_add_machine_init_done_notifier(Notifier *notify)
2357 {
2358 notifier_list_add(&machine_init_done_notifiers, notify);
2359 if (machine_init_done) {
2360 notify->notify(notify, NULL);
2361 }
2362 }
2363
2364 void qemu_remove_machine_init_done_notifier(Notifier *notify)
2365 {
2366 notifier_remove(notify);
2367 }
2368
2369 static void qemu_run_machine_init_done_notifiers(void)
2370 {
2371 machine_init_done = true;
2372 notifier_list_notify(&machine_init_done_notifiers, NULL);
2373 }
2374
2375 static const QEMUOption *lookup_opt(int argc, char **argv,
2376 const char **poptarg, int *poptind)
2377 {
2378 const QEMUOption *popt;
2379 int optind = *poptind;
2380 char *r = argv[optind];
2381 const char *optarg;
2382
2383 loc_set_cmdline(argv, optind, 1);
2384 optind++;
2385 /* Treat --foo the same as -foo. */
2386 if (r[1] == '-')
2387 r++;
2388 popt = qemu_options;
2389 for(;;) {
2390 if (!popt->name) {
2391 error_report("invalid option");
2392 exit(1);
2393 }
2394 if (!strcmp(popt->name, r + 1))
2395 break;
2396 popt++;
2397 }
2398 if (popt->flags & HAS_ARG) {
2399 if (optind >= argc) {
2400 error_report("requires an argument");
2401 exit(1);
2402 }
2403 optarg = argv[optind++];
2404 loc_set_cmdline(argv, optind - 2, 2);
2405 } else {
2406 optarg = NULL;
2407 }
2408
2409 *poptarg = optarg;
2410 *poptind = optind;
2411
2412 return popt;
2413 }
2414
2415 static MachineClass *select_machine(void)
2416 {
2417 GSList *machines = object_class_get_list(TYPE_MACHINE, false);
2418 MachineClass *machine_class = find_default_machine(machines);
2419 const char *optarg;
2420 QemuOpts *opts;
2421 Location loc;
2422
2423 loc_push_none(&loc);
2424
2425 opts = qemu_get_machine_opts();
2426 qemu_opts_loc_restore(opts);
2427
2428 optarg = qemu_opt_get(opts, "type");
2429 if (optarg) {
2430 machine_class = machine_parse(optarg, machines);
2431 }
2432
2433 if (!machine_class) {
2434 error_report("No machine specified, and there is no default");
2435 error_printf("Use -machine help to list supported machines\n");
2436 exit(1);
2437 }
2438
2439 loc_pop(&loc);
2440 g_slist_free(machines);
2441 return machine_class;
2442 }
2443
2444 static int object_parse_property_opt(Object *obj,
2445 const char *name, const char *value,
2446 const char *skip, Error **errp)
2447 {
2448 Error *local_err = NULL;
2449
2450 if (g_str_equal(name, skip)) {
2451 return 0;
2452 }
2453
2454 object_property_parse(obj, value, name, &local_err);
2455
2456 if (local_err) {
2457 error_propagate(errp, local_err);
2458 return -1;
2459 }
2460
2461 return 0;
2462 }
2463
2464 static int machine_set_property(void *opaque,
2465 const char *name, const char *value,
2466 Error **errp)
2467 {
2468 g_autofree char *qom_name = g_strdup(name);
2469 char *p;
2470
2471 for (p = qom_name; *p; p++) {
2472 if (*p == '_') {
2473 *p = '-';
2474 }
2475 }
2476
2477 /* Legacy options do not correspond to MachineState properties. */
2478 if (g_str_equal(qom_name, "accel")) {
2479 return 0;
2480 }
2481 if (g_str_equal(qom_name, "igd-passthru")) {
2482 object_register_sugar_prop(ACCEL_CLASS_NAME("xen"), qom_name, value);
2483 return 0;
2484 }
2485 if (g_str_equal(qom_name, "kvm-shadow-mem") ||
2486 g_str_equal(qom_name, "kernel-irqchip")) {
2487 object_register_sugar_prop(ACCEL_CLASS_NAME("kvm"), qom_name, value);
2488 return 0;
2489 }
2490
2491 return object_parse_property_opt(opaque, name, value, "type", errp);
2492 }
2493
2494 /*
2495 * Initial object creation happens before all other
2496 * QEMU data types are created. The majority of objects
2497 * can be created at this point. The rng-egd object
2498 * cannot be created here, as it depends on the chardev
2499 * already existing.
2500 */
2501 static bool object_create_initial(const char *type, QemuOpts *opts)
2502 {
2503 if (user_creatable_print_help(type, opts)) {
2504 exit(0);
2505 }
2506
2507 /*
2508 * Objects should not be made "delayed" without a reason. If you
2509 * add one, state the reason in a comment!
2510 */
2511
2512 /* Reason: rng-egd property "chardev" */
2513 if (g_str_equal(type, "rng-egd")) {
2514 return false;
2515 }
2516
2517 #if defined(CONFIG_VHOST_USER) && defined(CONFIG_LINUX)
2518 /* Reason: cryptodev-vhost-user property "chardev" */
2519 if (g_str_equal(type, "cryptodev-vhost-user")) {
2520 return false;
2521 }
2522 #endif
2523
2524 /*
2525 * Reason: filter-* property "netdev" etc.
2526 */
2527 if (g_str_equal(type, "filter-buffer") ||
2528 g_str_equal(type, "filter-dump") ||
2529 g_str_equal(type, "filter-mirror") ||
2530 g_str_equal(type, "filter-redirector") ||
2531 g_str_equal(type, "colo-compare") ||
2532 g_str_equal(type, "filter-rewriter") ||
2533 g_str_equal(type, "filter-replay")) {
2534 return false;
2535 }
2536
2537 /* Memory allocation by backends needs to be done
2538 * after configure_accelerator() (due to the tcg_enabled()
2539 * checks at memory_region_init_*()).
2540 *
2541 * Also, allocation of large amounts of memory may delay
2542 * chardev initialization for too long, and trigger timeouts
2543 * on software that waits for a monitor socket to be created
2544 * (e.g. libvirt).
2545 */
2546 if (g_str_has_prefix(type, "memory-backend-")) {
2547 return false;
2548 }
2549
2550 return true;
2551 }
2552
2553
2554 /*
2555 * The remainder of object creation happens after the
2556 * creation of chardev, fsdev, net clients and device data types.
2557 */
2558 static bool object_create_delayed(const char *type, QemuOpts *opts)
2559 {
2560 return !object_create_initial(type, opts);
2561 }
2562
2563
2564 static bool set_memory_options(uint64_t *ram_slots, ram_addr_t *maxram_size,
2565 MachineClass *mc)
2566 {
2567 uint64_t sz;
2568 const char *mem_str;
2569 const ram_addr_t default_ram_size = mc->default_ram_size;
2570 QemuOpts *opts = qemu_find_opts_singleton("memory");
2571 Location loc;
2572
2573 loc_push_none(&loc);
2574 qemu_opts_loc_restore(opts);
2575
2576 sz = 0;
2577 mem_str = qemu_opt_get(opts, "size");
2578 if (mem_str) {
2579 if (!*mem_str) {
2580 error_report("missing 'size' option value");
2581 exit(EXIT_FAILURE);
2582 }
2583
2584 sz = qemu_opt_get_size(opts, "size", ram_size);
2585
2586 /* Fix up legacy suffix-less format */
2587 if (g_ascii_isdigit(mem_str[strlen(mem_str) - 1])) {
2588 uint64_t overflow_check = sz;
2589
2590 sz *= MiB;
2591 if (sz / MiB != overflow_check) {
2592 error_report("too large 'size' option value");
2593 exit(EXIT_FAILURE);
2594 }
2595 }
2596 }
2597
2598 /* backward compatibility behaviour for case "-m 0" */
2599 if (sz == 0) {
2600 sz = default_ram_size;
2601 }
2602
2603 sz = QEMU_ALIGN_UP(sz, 8192);
2604 ram_size = sz;
2605 if (ram_size != sz) {
2606 error_report("ram size too large");
2607 exit(EXIT_FAILURE);
2608 }
2609
2610 /* store value for the future use */
2611 qemu_opt_set_number(opts, "size", ram_size, &error_abort);
2612 *maxram_size = ram_size;
2613
2614 if (qemu_opt_get(opts, "maxmem")) {
2615 uint64_t slots;
2616
2617 sz = qemu_opt_get_size(opts, "maxmem", 0);
2618 slots = qemu_opt_get_number(opts, "slots", 0);
2619 if (sz < ram_size) {
2620 error_report("invalid value of -m option maxmem: "
2621 "maximum memory size (0x%" PRIx64 ") must be at least "
2622 "the initial memory size (0x" RAM_ADDR_FMT ")",
2623 sz, ram_size);
2624 exit(EXIT_FAILURE);
2625 } else if (slots && sz == ram_size) {
2626 error_report("invalid value of -m option maxmem: "
2627 "memory slots were specified but maximum memory size "
2628 "(0x%" PRIx64 ") is equal to the initial memory size "
2629 "(0x" RAM_ADDR_FMT ")", sz, ram_size);
2630 exit(EXIT_FAILURE);
2631 }
2632
2633 *maxram_size = sz;
2634 *ram_slots = slots;
2635 } else if (qemu_opt_get(opts, "slots")) {
2636 error_report("invalid -m option value: missing 'maxmem' option");
2637 exit(EXIT_FAILURE);
2638 }
2639
2640 loc_pop(&loc);
2641 return !!mem_str;
2642 }
2643
2644 static int global_init_func(void *opaque, QemuOpts *opts, Error **errp)
2645 {
2646 GlobalProperty *g;
2647
2648 g = g_malloc0(sizeof(*g));
2649 g->driver = qemu_opt_get(opts, "driver");
2650 g->property = qemu_opt_get(opts, "property");
2651 g->value = qemu_opt_get(opts, "value");
2652 qdev_prop_register_global(g);
2653 return 0;
2654 }
2655
2656 static int qemu_read_default_config_file(void)
2657 {
2658 int ret;
2659
2660 ret = qemu_read_config_file(CONFIG_QEMU_CONFDIR "/qemu.conf");
2661 if (ret < 0 && ret != -ENOENT) {
2662 return ret;
2663 }
2664
2665 return 0;
2666 }
2667
2668 static void user_register_global_props(void)
2669 {
2670 qemu_opts_foreach(qemu_find_opts("global"),
2671 global_init_func, NULL, NULL);
2672 }
2673
2674 static int do_configure_icount(void *opaque, QemuOpts *opts, Error **errp)
2675 {
2676 configure_icount(opts, errp);
2677 return 0;
2678 }
2679
2680 static int accelerator_set_property(void *opaque,
2681 const char *name, const char *value,
2682 Error **errp)
2683 {
2684 return object_parse_property_opt(opaque, name, value, "accel", errp);
2685 }
2686
2687 static int do_configure_accelerator(void *opaque, QemuOpts *opts, Error **errp)
2688 {
2689 bool *p_init_failed = opaque;
2690 const char *acc = qemu_opt_get(opts, "accel");
2691 AccelClass *ac = accel_find(acc);
2692 AccelState *accel;
2693 int ret;
2694
2695 if (!ac) {
2696 *p_init_failed = true;
2697 error_report("invalid accelerator %s", acc);
2698 return 0;
2699 }
2700 accel = ACCEL(object_new_with_class(OBJECT_CLASS(ac)));
2701 object_apply_compat_props(OBJECT(accel));
2702 qemu_opt_foreach(opts, accelerator_set_property,
2703 accel,
2704 &error_fatal);
2705
2706 ret = accel_init_machine(accel, current_machine);
2707 if (ret < 0) {
2708 *p_init_failed = true;
2709 error_report("failed to initialize %s: %s",
2710 acc, strerror(-ret));
2711 return 0;
2712 }
2713
2714 return 1;
2715 }
2716
2717 static void configure_accelerators(const char *progname)
2718 {
2719 const char *accel;
2720 bool init_failed = false;
2721
2722 qemu_opts_foreach(qemu_find_opts("icount"),
2723 do_configure_icount, NULL, &error_fatal);
2724
2725 accel = qemu_opt_get(qemu_get_machine_opts(), "accel");
2726 if (QTAILQ_EMPTY(&qemu_accel_opts.head)) {
2727 char **accel_list, **tmp;
2728
2729 if (accel == NULL) {
2730 /* Select the default accelerator */
2731 bool have_tcg = accel_find("tcg");
2732 bool have_kvm = accel_find("kvm");
2733
2734 if (have_tcg && have_kvm) {
2735 if (g_str_has_suffix(progname, "kvm")) {
2736 /* If the program name ends with "kvm", we prefer KVM */
2737 accel = "kvm:tcg";
2738 } else {
2739 accel = "tcg:kvm";
2740 }
2741 } else if (have_kvm) {
2742 accel = "kvm";
2743 } else if (have_tcg) {
2744 accel = "tcg";
2745 } else {
2746 error_report("No accelerator selected and"
2747 " no default accelerator available");
2748 exit(1);
2749 }
2750 }
2751 accel_list = g_strsplit(accel, ":", 0);
2752
2753 for (tmp = accel_list; *tmp; tmp++) {
2754 /*
2755 * Filter invalid accelerators here, to prevent obscenities
2756 * such as "-machine accel=tcg,,thread=single".
2757 */
2758 if (accel_find(*tmp)) {
2759 qemu_opts_parse_noisily(qemu_find_opts("accel"), *tmp, true);
2760 } else {
2761 init_failed = true;
2762 error_report("invalid accelerator %s", *tmp);
2763 }
2764 }
2765 g_strfreev(accel_list);
2766 } else {
2767 if (accel != NULL) {
2768 error_report("The -accel and \"-machine accel=\" options are incompatible");
2769 exit(1);
2770 }
2771 }
2772
2773 if (!qemu_opts_foreach(qemu_find_opts("accel"),
2774 do_configure_accelerator, &init_failed, &error_fatal)) {
2775 if (!init_failed) {
2776 error_report("no accelerator found");
2777 }
2778 exit(1);
2779 }
2780
2781 if (init_failed) {
2782 AccelClass *ac = ACCEL_GET_CLASS(current_accel());
2783 error_report("falling back to %s", ac->name);
2784 }
2785
2786 if (use_icount && !(tcg_enabled() || qtest_enabled())) {
2787 error_report("-icount is not allowed with hardware virtualization");
2788 exit(1);
2789 }
2790 }
2791
2792 static void create_default_memdev(MachineState *ms, const char *path)
2793 {
2794 Object *obj;
2795 MachineClass *mc = MACHINE_GET_CLASS(ms);
2796
2797 obj = object_new(path ? TYPE_MEMORY_BACKEND_FILE : TYPE_MEMORY_BACKEND_RAM);
2798 if (path) {
2799 object_property_set_str(obj, path, "mem-path", &error_fatal);
2800 }
2801 object_property_set_int(obj, ms->ram_size, "size", &error_fatal);
2802 object_property_add_child(object_get_objects_root(), mc->default_ram_id,
2803 obj, &error_fatal);
2804 user_creatable_complete(USER_CREATABLE(obj), &error_fatal);
2805 object_unref(obj);
2806 object_property_set_str(OBJECT(ms), mc->default_ram_id, "memory-backend",
2807 &error_fatal);
2808 }
2809
2810 void qemu_init(int argc, char **argv, char **envp)
2811 {
2812 int i;
2813 int snapshot, linux_boot;
2814 const char *initrd_filename;
2815 const char *kernel_filename, *kernel_cmdline;
2816 const char *boot_order = NULL;
2817 const char *boot_once = NULL;
2818 DisplayState *ds;
2819 QemuOpts *opts, *machine_opts;
2820 QemuOpts *icount_opts = NULL, *accel_opts = NULL;
2821 QemuOptsList *olist;
2822 int optind;
2823 const char *optarg;
2824 const char *loadvm = NULL;
2825 MachineClass *machine_class;
2826 const char *cpu_option;
2827 const char *vga_model = NULL;
2828 const char *qtest_chrdev = NULL;
2829 const char *qtest_log = NULL;
2830 const char *incoming = NULL;
2831 bool userconfig = true;
2832 bool nographic = false;
2833 int display_remote = 0;
2834 const char *log_mask = NULL;
2835 const char *log_file = NULL;
2836 char *trace_file = NULL;
2837 ram_addr_t maxram_size;
2838 uint64_t ram_slots = 0;
2839 FILE *vmstate_dump_file = NULL;
2840 Error *main_loop_err = NULL;
2841 Error *err = NULL;
2842 bool list_data_dirs = false;
2843 char *dir, **dirs;
2844 const char *mem_path = NULL;
2845 bool have_custom_ram_size;
2846 BlockdevOptionsQueue bdo_queue = QSIMPLEQ_HEAD_INITIALIZER(bdo_queue);
2847 QemuPluginList plugin_list = QTAILQ_HEAD_INITIALIZER(plugin_list);
2848 int mem_prealloc = 0; /* force preallocation of physical target memory */
2849
2850 os_set_line_buffering();
2851
2852 error_init(argv[0]);
2853 module_call_init(MODULE_INIT_TRACE);
2854
2855 qemu_init_cpu_list();
2856 qemu_init_cpu_loop();
2857
2858 qemu_mutex_lock_iothread();
2859
2860 atexit(qemu_run_exit_notifiers);
2861 qemu_init_exec_dir(argv[0]);
2862
2863 module_call_init(MODULE_INIT_QOM);
2864 module_call_init(MODULE_INIT_MIGRATION);
2865
2866 qemu_add_opts(&qemu_drive_opts);
2867 qemu_add_drive_opts(&qemu_legacy_drive_opts);
2868 qemu_add_drive_opts(&qemu_common_drive_opts);
2869 qemu_add_drive_opts(&qemu_drive_opts);
2870 qemu_add_drive_opts(&bdrv_runtime_opts);
2871 qemu_add_opts(&qemu_chardev_opts);
2872 qemu_add_opts(&qemu_device_opts);
2873 qemu_add_opts(&qemu_netdev_opts);
2874 qemu_add_opts(&qemu_nic_opts);
2875 qemu_add_opts(&qemu_net_opts);
2876 qemu_add_opts(&qemu_rtc_opts);
2877 qemu_add_opts(&qemu_global_opts);
2878 qemu_add_opts(&qemu_mon_opts);
2879 qemu_add_opts(&qemu_trace_opts);
2880 qemu_plugin_add_opts();
2881 qemu_add_opts(&qemu_option_rom_opts);
2882 qemu_add_opts(&qemu_machine_opts);
2883 qemu_add_opts(&qemu_accel_opts);
2884 qemu_add_opts(&qemu_mem_opts);
2885 qemu_add_opts(&qemu_smp_opts);
2886 qemu_add_opts(&qemu_boot_opts);
2887 qemu_add_opts(&qemu_add_fd_opts);
2888 qemu_add_opts(&qemu_object_opts);
2889 qemu_add_opts(&qemu_tpmdev_opts);
2890 qemu_add_opts(&qemu_realtime_opts);
2891 qemu_add_opts(&qemu_overcommit_opts);
2892 qemu_add_opts(&qemu_msg_opts);
2893 qemu_add_opts(&qemu_name_opts);
2894 qemu_add_opts(&qemu_numa_opts);
2895 qemu_add_opts(&qemu_icount_opts);
2896 qemu_add_opts(&qemu_semihosting_config_opts);
2897 qemu_add_opts(&qemu_fw_cfg_opts);
2898 module_call_init(MODULE_INIT_OPTS);
2899
2900 runstate_init();
2901 precopy_infrastructure_init();
2902 postcopy_infrastructure_init();
2903 monitor_init_globals();
2904
2905 if (qcrypto_init(&err) < 0) {
2906 error_reportf_err(err, "cannot initialize crypto: ");
2907 exit(1);
2908 }
2909
2910 QTAILQ_INIT(&vm_change_state_head);
2911 os_setup_early_signal_handling();
2912
2913 cpu_option = NULL;
2914 snapshot = 0;
2915
2916 nb_nics = 0;
2917
2918 bdrv_init_with_whitelist();
2919
2920 autostart = 1;
2921
2922 /* first pass of option parsing */
2923 optind = 1;
2924 while (optind < argc) {
2925 if (argv[optind][0] != '-') {
2926 /* disk image */
2927 optind++;
2928 } else {
2929 const QEMUOption *popt;
2930
2931 popt = lookup_opt(argc, argv, &optarg, &optind);
2932 switch (popt->index) {
2933 case QEMU_OPTION_nouserconfig:
2934 userconfig = false;
2935 break;
2936 }
2937 }
2938 }
2939
2940 if (userconfig) {
2941 if (qemu_read_default_config_file() < 0) {
2942 exit(1);
2943 }
2944 }
2945
2946 /* second pass of option parsing */
2947 optind = 1;
2948 for(;;) {
2949 if (optind >= argc)
2950 break;
2951 if (argv[optind][0] != '-') {
2952 loc_set_cmdline(argv, optind, 1);
2953 drive_add(IF_DEFAULT, 0, argv[optind++], HD_OPTS);
2954 } else {
2955 const QEMUOption *popt;
2956
2957 popt = lookup_opt(argc, argv, &optarg, &optind);
2958 if (!(popt->arch_mask & arch_type)) {
2959 error_report("Option not supported for this target");
2960 exit(1);
2961 }
2962 switch(popt->index) {
2963 case QEMU_OPTION_cpu:
2964 /* hw initialization will check this */
2965 cpu_option = optarg;
2966 break;
2967 case QEMU_OPTION_hda:
2968 case QEMU_OPTION_hdb:
2969 case QEMU_OPTION_hdc:
2970 case QEMU_OPTION_hdd:
2971 drive_add(IF_DEFAULT, popt->index - QEMU_OPTION_hda, optarg,
2972 HD_OPTS);
2973 break;
2974 case QEMU_OPTION_blockdev:
2975 {
2976 Visitor *v;
2977 BlockdevOptionsQueueEntry *bdo;
2978
2979 v = qobject_input_visitor_new_str(optarg, "driver",
2980 &error_fatal);
2981
2982 bdo = g_new(BlockdevOptionsQueueEntry, 1);
2983 visit_type_BlockdevOptions(v, NULL, &bdo->bdo,
2984 &error_fatal);
2985 visit_free(v);
2986 loc_save(&bdo->loc);
2987 QSIMPLEQ_INSERT_TAIL(&bdo_queue, bdo, entry);
2988 break;
2989 }
2990 case QEMU_OPTION_drive:
2991 if (drive_def(optarg) == NULL) {
2992 exit(1);
2993 }
2994 break;
2995 case QEMU_OPTION_set:
2996 if (qemu_set_option(optarg) != 0)
2997 exit(1);
2998 break;
2999 case QEMU_OPTION_global:
3000 if (qemu_global_option(optarg) != 0)
3001 exit(1);
3002 break;
3003 case QEMU_OPTION_mtdblock:
3004 drive_add(IF_MTD, -1, optarg, MTD_OPTS);
3005 break;
3006 case QEMU_OPTION_sd:
3007 drive_add(IF_SD, -1, optarg, SD_OPTS);
3008 break;
3009 case QEMU_OPTION_pflash:
3010 drive_add(IF_PFLASH, -1, optarg, PFLASH_OPTS);
3011 break;
3012 case QEMU_OPTION_snapshot:
3013 {
3014 Error *blocker = NULL;
3015 snapshot = 1;
3016 error_setg(&blocker, QERR_REPLAY_NOT_SUPPORTED,
3017 "-snapshot");
3018 replay_add_blocker(blocker);
3019 }
3020 break;
3021 case QEMU_OPTION_numa:
3022 opts = qemu_opts_parse_noisily(qemu_find_opts("numa"),
3023 optarg, true);
3024 if (!opts) {
3025 exit(1);
3026 }
3027 break;
3028 case QEMU_OPTION_display:
3029 parse_display(optarg);
3030 break;
3031 case QEMU_OPTION_nographic:
3032 olist = qemu_find_opts("machine");
3033 qemu_opts_parse_noisily(olist, "graphics=off", false);
3034 nographic = true;
3035 dpy.type = DISPLAY_TYPE_NONE;
3036 break;
3037 case QEMU_OPTION_curses:
3038 #ifdef CONFIG_CURSES
3039 dpy.type = DISPLAY_TYPE_CURSES;
3040 #else
3041 error_report("curses or iconv support is disabled");
3042 exit(1);
3043 #endif
3044 break;
3045 case QEMU_OPTION_portrait:
3046 graphic_rotate = 90;
3047 break;
3048 case QEMU_OPTION_rotate:
3049 graphic_rotate = strtol(optarg, (char **) &optarg, 10);
3050 if (graphic_rotate != 0 && graphic_rotate != 90 &&
3051 graphic_rotate != 180 && graphic_rotate != 270) {
3052 error_report("only 90, 180, 270 deg rotation is available");
3053 exit(1);
3054 }
3055 break;
3056 case QEMU_OPTION_kernel:
3057 qemu_opts_set(qemu_find_opts("machine"), 0, "kernel", optarg,
3058 &error_abort);
3059 break;
3060 case QEMU_OPTION_initrd:
3061 qemu_opts_set(qemu_find_opts("machine"), 0, "initrd", optarg,
3062 &error_abort);
3063 break;
3064 case QEMU_OPTION_append:
3065 qemu_opts_set(qemu_find_opts("machine"), 0, "append", optarg,
3066 &error_abort);
3067 break;
3068 case QEMU_OPTION_dtb:
3069 qemu_opts_set(qemu_find_opts("machine"), 0, "dtb", optarg,
3070 &error_abort);
3071 break;
3072 case QEMU_OPTION_cdrom:
3073 drive_add(IF_DEFAULT, 2, optarg, CDROM_OPTS);
3074 break;
3075 case QEMU_OPTION_boot:
3076 opts = qemu_opts_parse_noisily(qemu_find_opts("boot-opts"),
3077 optarg, true);
3078 if (!opts) {
3079 exit(1);
3080 }
3081 break;
3082 case QEMU_OPTION_fda:
3083 case QEMU_OPTION_fdb:
3084 drive_add(IF_FLOPPY, popt->index - QEMU_OPTION_fda,
3085 optarg, FD_OPTS);
3086 break;
3087 case QEMU_OPTION_no_fd_bootchk:
3088 fd_bootchk = 0;
3089 break;
3090 case QEMU_OPTION_netdev:
3091 default_net = 0;
3092 if (net_client_parse(qemu_find_opts("netdev"), optarg) == -1) {
3093 exit(1);
3094 }
3095 break;
3096 case QEMU_OPTION_nic:
3097 default_net = 0;
3098 if (net_client_parse(qemu_find_opts("nic"), optarg) == -1) {
3099 exit(1);
3100 }
3101 break;
3102 case QEMU_OPTION_net:
3103 default_net = 0;
3104 if (net_client_parse(qemu_find_opts("net"), optarg) == -1) {
3105 exit(1);
3106 }
3107 break;
3108 #ifdef CONFIG_LIBISCSI
3109 case QEMU_OPTION_iscsi:
3110 opts = qemu_opts_parse_noisily(qemu_find_opts("iscsi"),
3111 optarg, false);
3112 if (!opts) {
3113 exit(1);
3114 }
3115 break;
3116 #endif
3117 case QEMU_OPTION_audio_help:
3118 audio_legacy_help();
3119 exit (0);
3120 break;
3121 case QEMU_OPTION_audiodev:
3122 audio_parse_option(optarg);
3123 break;
3124 case QEMU_OPTION_soundhw:
3125 select_soundhw (optarg);
3126 break;
3127 case QEMU_OPTION_h:
3128 help(0);
3129 break;
3130 case QEMU_OPTION_version:
3131 version();
3132 exit(0);
3133 break;
3134 case QEMU_OPTION_m:
3135 opts = qemu_opts_parse_noisily(qemu_find_opts("memory"),
3136 optarg, true);
3137 if (!opts) {
3138 exit(EXIT_FAILURE);
3139 }
3140 break;
3141 #ifdef CONFIG_TPM
3142 case QEMU_OPTION_tpmdev:
3143 if (tpm_config_parse(qemu_find_opts("tpmdev"), optarg) < 0) {
3144 exit(1);
3145 }
3146 break;
3147 #endif
3148 case QEMU_OPTION_mempath:
3149 mem_path = optarg;
3150 break;
3151 case QEMU_OPTION_mem_prealloc:
3152 mem_prealloc = 1;
3153 break;
3154 case QEMU_OPTION_d:
3155 log_mask = optarg;
3156 break;
3157 case QEMU_OPTION_D:
3158 log_file = optarg;
3159 break;
3160 case QEMU_OPTION_DFILTER:
3161 qemu_set_dfilter_ranges(optarg, &error_fatal);
3162 break;
3163 case QEMU_OPTION_seed:
3164 qemu_guest_random_seed_main(optarg, &error_fatal);
3165 break;
3166 case QEMU_OPTION_s:
3167 add_device_config(DEV_GDB, "tcp::" DEFAULT_GDBSTUB_PORT);
3168 break;
3169 case QEMU_OPTION_gdb:
3170 add_device_config(DEV_GDB, optarg);
3171 break;
3172 case QEMU_OPTION_L:
3173 if (is_help_option(optarg)) {
3174 list_data_dirs = true;
3175 } else {
3176 qemu_add_data_dir(optarg);
3177 }
3178 break;
3179 case QEMU_OPTION_bios:
3180 qemu_opts_set(qemu_find_opts("machine"), 0, "firmware", optarg,
3181 &error_abort);
3182 break;
3183 case QEMU_OPTION_singlestep:
3184 singlestep = 1;
3185 break;
3186 case QEMU_OPTION_S:
3187 autostart = 0;
3188 break;
3189 case QEMU_OPTION_k:
3190 keyboard_layout = optarg;
3191 break;
3192 case QEMU_OPTION_vga:
3193 vga_model = optarg;
3194 default_vga = 0;
3195 break;
3196 case QEMU_OPTION_g:
3197 {
3198 const char *p;
3199 int w, h, depth;
3200 p = optarg;
3201 w = strtol(p, (char **)&p, 10);
3202 if (w <= 0) {
3203 graphic_error:
3204 error_report("invalid resolution or depth");
3205 exit(1);
3206 }
3207 if (*p != 'x')
3208 goto graphic_error;
3209 p++;
3210 h = strtol(p, (char **)&p, 10);
3211 if (h <= 0)
3212 goto graphic_error;
3213 if (*p == 'x') {
3214 p++;
3215 depth = strtol(p, (char **)&p, 10);
3216 if (depth != 1 && depth != 2 && depth != 4 &&
3217 depth != 8 && depth != 15 && depth != 16 &&
3218 depth != 24 && depth != 32)
3219 goto graphic_error;
3220 } else if (*p == '\0') {
3221 depth = graphic_depth;
3222 } else {
3223 goto graphic_error;
3224 }
3225
3226 graphic_width = w;
3227 graphic_height = h;
3228 graphic_depth = depth;
3229 }
3230 break;
3231 case QEMU_OPTION_echr:
3232 {
3233 char *r;
3234 term_escape_char = strtol(optarg, &r, 0);
3235 if (r == optarg)
3236 printf("Bad argument to echr\n");
3237 break;
3238 }
3239 case QEMU_OPTION_monitor:
3240 default_monitor = 0;
3241 if (strncmp(optarg, "none", 4)) {
3242 monitor_parse(optarg, "readline", false);
3243 }
3244 break;
3245 case QEMU_OPTION_qmp:
3246 monitor_parse(optarg, "control", false);
3247 default_monitor = 0;
3248 break;
3249 case QEMU_OPTION_qmp_pretty:
3250 monitor_parse(optarg, "control", true);
3251 default_monitor = 0;
3252 break;
3253 case QEMU_OPTION_mon:
3254 opts = qemu_opts_parse_noisily(qemu_find_opts("mon"), optarg,
3255 true);
3256 if (!opts) {
3257 exit(1);
3258 }
3259 default_monitor = 0;
3260 break;
3261 case QEMU_OPTION_chardev:
3262 opts = qemu_opts_parse_noisily(qemu_find_opts("chardev"),
3263 optarg, true);
3264 if (!opts) {
3265 exit(1);
3266 }
3267 break;
3268 case QEMU_OPTION_fsdev:
3269 olist = qemu_find_opts("fsdev");
3270 if (!olist) {
3271 error_report("fsdev support is disabled");
3272 exit(1);
3273 }
3274 opts = qemu_opts_parse_noisily(olist, optarg, true);
3275 if (!opts) {
3276 exit(1);
3277 }
3278 break;
3279 case QEMU_OPTION_virtfs: {
3280 QemuOpts *fsdev;
3281 QemuOpts *device;
3282 const char *writeout, *sock_fd, *socket, *path, *security_model,
3283 *multidevs;
3284
3285 olist = qemu_find_opts("virtfs");
3286 if (!olist) {
3287 error_report("virtfs support is disabled");
3288 exit(1);
3289 }
3290 opts = qemu_opts_parse_noisily(olist, optarg, true);
3291 if (!opts) {
3292 exit(1);
3293 }
3294
3295 if (qemu_opt_get(opts, "fsdriver") == NULL ||
3296 qemu_opt_get(opts, "mount_tag") == NULL) {
3297 error_report("Usage: -virtfs fsdriver,mount_tag=tag");
3298 exit(1);
3299 }
3300 fsdev = qemu_opts_create(qemu_find_opts("fsdev"),
3301 qemu_opts_id(opts) ?:
3302 qemu_opt_get(opts, "mount_tag"),
3303 1, NULL);
3304 if (!fsdev) {
3305 error_report("duplicate or invalid fsdev id: %s",
3306 qemu_opt_get(opts, "mount_tag"));
3307 exit(1);
3308 }
3309
3310 writeout = qemu_opt_get(opts, "writeout");
3311 if (writeout) {
3312 #ifdef CONFIG_SYNC_FILE_RANGE
3313 qemu_opt_set(fsdev, "writeout", writeout, &error_abort);
3314 #else
3315 error_report("writeout=immediate not supported "
3316 "on this platform");
3317 exit(1);
3318 #endif
3319 }
3320 qemu_opt_set(fsdev, "fsdriver",
3321 qemu_opt_get(opts, "fsdriver"), &error_abort);
3322 path = qemu_opt_get(opts, "path");
3323 if (path) {
3324 qemu_opt_set(fsdev, "path", path, &error_abort);
3325 }
3326 security_model = qemu_opt_get(opts, "security_model");
3327 if (security_model) {
3328 qemu_opt_set(fsdev, "security_model", security_model,
3329 &error_abort);
3330 }
3331 socket = qemu_opt_get(opts, "socket");
3332 if (socket) {
3333 qemu_opt_set(fsdev, "socket", socket, &error_abort);
3334 }
3335 sock_fd = qemu_opt_get(opts, "sock_fd");
3336 if (sock_fd) {
3337 qemu_opt_set(fsdev, "sock_fd", sock_fd, &error_abort);
3338 }
3339
3340 qemu_opt_set_bool(fsdev, "readonly",
3341 qemu_opt_get_bool(opts, "readonly", 0),
3342 &error_abort);
3343 multidevs = qemu_opt_get(opts, "multidevs");
3344 if (multidevs) {
3345 qemu_opt_set(fsdev, "multidevs", multidevs, &error_abort);
3346 }
3347 device = qemu_opts_create(qemu_find_opts("device"), NULL, 0,
3348 &error_abort);
3349 qemu_opt_set(device, "driver", "virtio-9p-pci", &error_abort);
3350 qemu_opt_set(device, "fsdev",
3351 qemu_opts_id(fsdev), &error_abort);
3352 qemu_opt_set(device, "mount_tag",
3353 qemu_opt_get(opts, "mount_tag"), &error_abort);
3354 break;
3355 }
3356 case QEMU_OPTION_serial:
3357 add_device_config(DEV_SERIAL, optarg);
3358 default_serial = 0;
3359 if (strncmp(optarg, "mon:", 4) == 0) {
3360 default_monitor = 0;
3361 }
3362 break;
3363 case QEMU_OPTION_watchdog:
3364 if (watchdog) {
3365 error_report("only one watchdog option may be given");
3366 exit(1);
3367 }
3368 watchdog = optarg;
3369 break;
3370 case QEMU_OPTION_watchdog_action:
3371 if (select_watchdog_action(optarg) == -1) {
3372 error_report("unknown -watchdog-action parameter");
3373 exit(1);
3374 }
3375 break;
3376 case QEMU_OPTION_parallel:
3377 add_device_config(DEV_PARALLEL, optarg);
3378 default_parallel = 0;
3379 if (strncmp(optarg, "mon:", 4) == 0) {
3380 default_monitor = 0;
3381 }
3382 break;
3383 case QEMU_OPTION_debugcon:
3384 add_device_config(DEV_DEBUGCON, optarg);
3385 break;
3386 case QEMU_OPTION_loadvm:
3387 loadvm = optarg;
3388 break;
3389 case QEMU_OPTION_full_screen:
3390 dpy.has_full_screen = true;
3391 dpy.full_screen = true;
3392 break;
3393 case QEMU_OPTION_alt_grab:
3394 alt_grab = 1;
3395 break;
3396 case QEMU_OPTION_ctrl_grab:
3397 ctrl_grab = 1;
3398 break;
3399 case QEMU_OPTION_no_quit:
3400 dpy.has_window_close = true;
3401 dpy.window_close = false;
3402 break;
3403 case QEMU_OPTION_sdl:
3404 #ifdef CONFIG_SDL
3405 dpy.type = DISPLAY_TYPE_SDL;
3406 break;
3407 #else
3408 error_report("SDL support is disabled");
3409 exit(1);
3410 #endif
3411 case QEMU_OPTION_pidfile:
3412 pid_file = optarg;
3413 break;
3414 case QEMU_OPTION_win2k_hack:
3415 win2k_install_hack = 1;
3416 break;
3417 case QEMU_OPTION_acpitable:
3418 opts = qemu_opts_parse_noisily(qemu_find_opts("acpi"),
3419 optarg, true);
3420 if (!opts) {
3421 exit(1);
3422 }
3423 acpi_table_add(opts, &error_fatal);