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gdbstub: lightly refactor connection to avoid snprintf
[qemu/kevin.git] / softmmu / vl.c
blobb0b96f67fac0cb9cc4ac754227c0183d2a33cb4f
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/help-texts.h"
27 #include "qemu/datadir.h"
28 #include "qemu/units.h"
29 #include "exec/cpu-common.h"
30 #include "exec/page-vary.h"
31 #include "hw/qdev-properties.h"
32 #include "qapi/compat-policy.h"
33 #include "qapi/error.h"
34 #include "qapi/qmp/qdict.h"
35 #include "qapi/qmp/qstring.h"
36 #include "qapi/qmp/qjson.h"
37 #include "qemu-version.h"
38 #include "qemu/cutils.h"
39 #include "qemu/help_option.h"
40 #include "qemu/hw-version.h"
41 #include "qemu/uuid.h"
42 #include "sysemu/reset.h"
43 #include "sysemu/runstate.h"
44 #include "sysemu/runstate-action.h"
45 #include "sysemu/seccomp.h"
46 #include "sysemu/tcg.h"
47 #include "sysemu/xen.h"
48
49 #include "qemu/error-report.h"
50 #include "qemu/sockets.h"
51 #include "qemu/accel.h"
52 #include "hw/usb.h"
53 #include "hw/isa/isa.h"
54 #include "hw/scsi/scsi.h"
55 #include "hw/display/vga.h"
56 #include "hw/firmware/smbios.h"
57 #include "hw/acpi/acpi.h"
58 #include "hw/xen/xen.h"
59 #include "hw/loader.h"
60 #include "monitor/qdev.h"
61 #include "net/net.h"
62 #include "net/slirp.h"
63 #include "monitor/monitor.h"
64 #include "ui/console.h"
65 #include "ui/input.h"
66 #include "sysemu/sysemu.h"
67 #include "sysemu/numa.h"
68 #include "sysemu/hostmem.h"
69 #include "exec/gdbstub.h"
70 #include "qemu/timer.h"
71 #include "chardev/char.h"
72 #include "qemu/bitmap.h"
73 #include "qemu/log.h"
74 #include "sysemu/blockdev.h"
75 #include "hw/block/block.h"
76 #include "hw/i386/x86.h"
77 #include "hw/i386/pc.h"
78 #include "migration/misc.h"
79 #include "migration/snapshot.h"
80 #include "sysemu/tpm.h"
81 #include "sysemu/dma.h"
82 #include "hw/audio/soundhw.h"
83 #include "audio/audio.h"
84 #include "sysemu/cpus.h"
85 #include "sysemu/cpu-timers.h"
86 #include "migration/colo.h"
87 #include "migration/postcopy-ram.h"
88 #include "sysemu/kvm.h"
89 #include "sysemu/hax.h"
90 #include "qapi/qobject-input-visitor.h"
91 #include "qemu/option.h"
92 #include "qemu/config-file.h"
93 #include "qemu/qemu-options.h"
94 #include "qemu/main-loop.h"
95 #ifdef CONFIG_VIRTFS
96 #include "fsdev/qemu-fsdev.h"
97 #endif
98 #include "sysemu/qtest.h"
99 #ifdef CONFIG_TCG
100 #include "accel/tcg/perf.h"
101 #endif
102
103 #include "disas/disas.h"
104
105 #include "trace.h"
106 #include "trace/control.h"
107 #include "qemu/plugin.h"
108 #include "qemu/queue.h"
109 #include "sysemu/arch_init.h"
110 #include "exec/confidential-guest-support.h"
111
112 #include "ui/qemu-spice.h"
113 #include "qapi/string-input-visitor.h"
114 #include "qapi/opts-visitor.h"
115 #include "qapi/clone-visitor.h"
116 #include "qom/object_interfaces.h"
117 #include "semihosting/semihost.h"
118 #include "crypto/init.h"
119 #include "sysemu/replay.h"
120 #include "qapi/qapi-events-run-state.h"
121 #include "qapi/qapi-types-audio.h"
122 #include "qapi/qapi-visit-audio.h"
123 #include "qapi/qapi-visit-block-core.h"
124 #include "qapi/qapi-visit-compat.h"
125 #include "qapi/qapi-visit-machine.h"
126 #include "qapi/qapi-visit-ui.h"
127 #include "qapi/qapi-commands-block-core.h"
128 #include "qapi/qapi-commands-migration.h"
129 #include "qapi/qapi-commands-misc.h"
130 #include "qapi/qapi-visit-qom.h"
131 #include "qapi/qapi-commands-ui.h"
132 #include "block/qdict.h"
133 #include "qapi/qmp/qerror.h"
134 #include "sysemu/iothread.h"
135 #include "qemu/guest-random.h"
136 #include "qemu/keyval.h"
137
138 #define MAX_VIRTIO_CONSOLES 1
139
140 typedef struct BlockdevOptionsQueueEntry {
141 BlockdevOptions *bdo;
142 Location loc;
143 QSIMPLEQ_ENTRY(BlockdevOptionsQueueEntry) entry;
144 } BlockdevOptionsQueueEntry;
145
146 typedef QSIMPLEQ_HEAD(, BlockdevOptionsQueueEntry) BlockdevOptionsQueue;
147
148 typedef struct ObjectOption {
149 ObjectOptions *opts;
150 QTAILQ_ENTRY(ObjectOption) next;
151 } ObjectOption;
152
153 typedef struct DeviceOption {
154 QDict *opts;
155 Location loc;
156 QTAILQ_ENTRY(DeviceOption) next;
157 } DeviceOption;
158
159 static const char *cpu_option;
160 static const char *mem_path;
161 static const char *incoming;
162 static const char *loadvm;
163 static const char *accelerators;
164 static bool have_custom_ram_size;
165 static const char *ram_memdev_id;
166 static QDict *machine_opts_dict;
167 static QTAILQ_HEAD(, ObjectOption) object_opts = QTAILQ_HEAD_INITIALIZER(object_opts);
168 static QTAILQ_HEAD(, DeviceOption) device_opts = QTAILQ_HEAD_INITIALIZER(device_opts);
169 static int display_remote;
170 static int snapshot;
171 static bool preconfig_requested;
172 static QemuPluginList plugin_list = QTAILQ_HEAD_INITIALIZER(plugin_list);
173 static BlockdevOptionsQueue bdo_queue = QSIMPLEQ_HEAD_INITIALIZER(bdo_queue);
174 static bool nographic = false;
175 static int mem_prealloc; /* force preallocation of physical target memory */
176 static const char *vga_model = NULL;
177 static DisplayOptions dpy;
178 static int num_serial_hds;
179 static Chardev **serial_hds;
180 static const char *log_mask;
181 static const char *log_file;
182 static bool list_data_dirs;
183 static const char *qtest_chrdev;
184 static const char *qtest_log;
185 static bool opt_one_insn_per_tb;
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 = "scsi-cd", .flag = &default_cdrom },
208 { .driver = "scsi-hd", .flag = &default_cdrom },
209 { .driver = "VGA", .flag = &default_vga },
210 { .driver = "isa-vga", .flag = &default_vga },
211 { .driver = "cirrus-vga", .flag = &default_vga },
212 { .driver = "isa-cirrus-vga", .flag = &default_vga },
213 { .driver = "vmware-svga", .flag = &default_vga },
214 { .driver = "qxl-vga", .flag = &default_vga },
215 { .driver = "virtio-vga", .flag = &default_vga },
216 { .driver = "ati-vga", .flag = &default_vga },
217 { .driver = "vhost-user-vga", .flag = &default_vga },
218 { .driver = "virtio-vga-gl", .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_accel_opts = {
257 .name = "accel",
258 .implied_opt_name = "accel",
259 .head = QTAILQ_HEAD_INITIALIZER(qemu_accel_opts.head),
260 .desc = {
261 /*
262 * no elements => accept any
263 * sanity checking will happen later
264 * when setting accelerator properties
265 */
266 { }
267 },
268 };
269
270 static QemuOptsList qemu_boot_opts = {
271 .name = "boot-opts",
272 .implied_opt_name = "order",
273 .merge_lists = true,
274 .head = QTAILQ_HEAD_INITIALIZER(qemu_boot_opts.head),
275 .desc = {
276 {
277 .name = "order",
278 .type = QEMU_OPT_STRING,
279 }, {
280 .name = "once",
281 .type = QEMU_OPT_STRING,
282 }, {
283 .name = "menu",
284 .type = QEMU_OPT_BOOL,
285 }, {
286 .name = "splash",
287 .type = QEMU_OPT_STRING,
288 }, {
289 .name = "splash-time",
290 .type = QEMU_OPT_NUMBER,
291 }, {
292 .name = "reboot-timeout",
293 .type = QEMU_OPT_NUMBER,
294 }, {
295 .name = "strict",
296 .type = QEMU_OPT_BOOL,
297 },
298 { /*End of list */ }
299 },
300 };
301
302 static QemuOptsList qemu_add_fd_opts = {
303 .name = "add-fd",
304 .head = QTAILQ_HEAD_INITIALIZER(qemu_add_fd_opts.head),
305 .desc = {
306 {
307 .name = "fd",
308 .type = QEMU_OPT_NUMBER,
309 .help = "file descriptor of which a duplicate is added to fd set",
310 },{
311 .name = "set",
312 .type = QEMU_OPT_NUMBER,
313 .help = "ID of the fd set to add fd to",
314 },{
315 .name = "opaque",
316 .type = QEMU_OPT_STRING,
317 .help = "free-form string used to describe fd",
318 },
319 { /* end of list */ }
320 },
321 };
322
323 static QemuOptsList qemu_object_opts = {
324 .name = "object",
325 .implied_opt_name = "qom-type",
326 .head = QTAILQ_HEAD_INITIALIZER(qemu_object_opts.head),
327 .desc = {
328 { }
329 },
330 };
331
332 static QemuOptsList qemu_tpmdev_opts = {
333 .name = "tpmdev",
334 .implied_opt_name = "type",
335 .head = QTAILQ_HEAD_INITIALIZER(qemu_tpmdev_opts.head),
336 .desc = {
337 /* options are defined in the TPM backends */
338 { /* end of list */ }
339 },
340 };
341
342 static QemuOptsList qemu_overcommit_opts = {
343 .name = "overcommit",
344 .head = QTAILQ_HEAD_INITIALIZER(qemu_overcommit_opts.head),
345 .desc = {
346 {
347 .name = "mem-lock",
348 .type = QEMU_OPT_BOOL,
349 },
350 {
351 .name = "cpu-pm",
352 .type = QEMU_OPT_BOOL,
353 },
354 { /* end of list */ }
355 },
356 };
357
358 static QemuOptsList qemu_msg_opts = {
359 .name = "msg",
360 .head = QTAILQ_HEAD_INITIALIZER(qemu_msg_opts.head),
361 .desc = {
362 {
363 .name = "timestamp",
364 .type = QEMU_OPT_BOOL,
365 },
366 {
367 .name = "guest-name",
368 .type = QEMU_OPT_BOOL,
369 .help = "Prepends guest name for error messages but only if "
370 "-name guest is set otherwise option is ignored\n",
371 },
372 { /* end of list */ }
373 },
374 };
375
376 static QemuOptsList qemu_name_opts = {
377 .name = "name",
378 .implied_opt_name = "guest",
379 .merge_lists = true,
380 .head = QTAILQ_HEAD_INITIALIZER(qemu_name_opts.head),
381 .desc = {
382 {
383 .name = "guest",
384 .type = QEMU_OPT_STRING,
385 .help = "Sets the name of the guest.\n"
386 "This name will be displayed in the SDL window caption.\n"
387 "The name will also be used for the VNC server",
388 }, {
389 .name = "process",
390 .type = QEMU_OPT_STRING,
391 .help = "Sets the name of the QEMU process, as shown in top etc",
392 }, {
393 .name = "debug-threads",
394 .type = QEMU_OPT_BOOL,
395 .help = "When enabled, name the individual threads; defaults off.\n"
396 "NOTE: The thread names are for debugging and not a\n"
397 "stable API.",
398 },
399 { /* End of list */ }
400 },
401 };
402
403 static QemuOptsList qemu_mem_opts = {
404 .name = "memory",
405 .implied_opt_name = "size",
406 .head = QTAILQ_HEAD_INITIALIZER(qemu_mem_opts.head),
407 .merge_lists = true,
408 .desc = {
409 {
410 .name = "size",
411 .type = QEMU_OPT_SIZE,
412 },
413 {
414 .name = "slots",
415 .type = QEMU_OPT_NUMBER,
416 },
417 {
418 .name = "maxmem",
419 .type = QEMU_OPT_SIZE,
420 },
421 { /* end of list */ }
422 },
423 };
424
425 static QemuOptsList qemu_icount_opts = {
426 .name = "icount",
427 .implied_opt_name = "shift",
428 .merge_lists = true,
429 .head = QTAILQ_HEAD_INITIALIZER(qemu_icount_opts.head),
430 .desc = {
431 {
432 .name = "shift",
433 .type = QEMU_OPT_STRING,
434 }, {
435 .name = "align",
436 .type = QEMU_OPT_BOOL,
437 }, {
438 .name = "sleep",
439 .type = QEMU_OPT_BOOL,
440 }, {
441 .name = "rr",
442 .type = QEMU_OPT_STRING,
443 }, {
444 .name = "rrfile",
445 .type = QEMU_OPT_STRING,
446 }, {
447 .name = "rrsnapshot",
448 .type = QEMU_OPT_STRING,
449 },
450 { /* end of list */ }
451 },
452 };
453
454 static QemuOptsList qemu_fw_cfg_opts = {
455 .name = "fw_cfg",
456 .implied_opt_name = "name",
457 .head = QTAILQ_HEAD_INITIALIZER(qemu_fw_cfg_opts.head),
458 .desc = {
459 {
460 .name = "name",
461 .type = QEMU_OPT_STRING,
462 .help = "Sets the fw_cfg name of the blob to be inserted",
463 }, {
464 .name = "file",
465 .type = QEMU_OPT_STRING,
466 .help = "Sets the name of the file from which "
467 "the fw_cfg blob will be loaded",
468 }, {
469 .name = "string",
470 .type = QEMU_OPT_STRING,
471 .help = "Sets content of the blob to be inserted from a string",
472 }, {
473 .name = "gen_id",
474 .type = QEMU_OPT_STRING,
475 .help = "Sets id of the object generating the fw_cfg blob "
476 "to be inserted",
477 },
478 { /* end of list */ }
479 },
480 };
481
482 static QemuOptsList qemu_action_opts = {
483 .name = "action",
484 .merge_lists = true,
485 .head = QTAILQ_HEAD_INITIALIZER(qemu_action_opts.head),
486 .desc = {
487 {
488 .name = "shutdown",
489 .type = QEMU_OPT_STRING,
490 },{
491 .name = "reboot",
492 .type = QEMU_OPT_STRING,
493 },{
494 .name = "panic",
495 .type = QEMU_OPT_STRING,
496 },{
497 .name = "watchdog",
498 .type = QEMU_OPT_STRING,
499 },
500 { /* end of list */ }
501 },
502 };
503
504 const char *qemu_get_vm_name(void)
505 {
506 return qemu_name;
507 }
508
509 static void default_driver_disable(const char *driver)
510 {
511 int i;
512
513 if (!driver) {
514 return;
515 }
516
517 for (i = 0; i < ARRAY_SIZE(default_list); i++) {
518 if (strcmp(default_list[i].driver, driver) != 0)
519 continue;
520 *(default_list[i].flag) = 0;
521 }
522 }
523
524 static int default_driver_check(void *opaque, QemuOpts *opts, Error **errp)
525 {
526 const char *driver = qemu_opt_get(opts, "driver");
527
528 default_driver_disable(driver);
529 return 0;
530 }
531
532 static void default_driver_check_json(void)
533 {
534 DeviceOption *opt;
535
536 QTAILQ_FOREACH(opt, &device_opts, next) {
537 const char *driver = qdict_get_try_str(opt->opts, "driver");
538 default_driver_disable(driver);
539 }
540 }
541
542 static int parse_name(void *opaque, QemuOpts *opts, Error **errp)
543 {
544 const char *proc_name;
545
546 if (qemu_opt_get(opts, "debug-threads")) {
547 qemu_thread_naming(qemu_opt_get_bool(opts, "debug-threads", false));
548 }
549 qemu_name = qemu_opt_get(opts, "guest");
550
551 proc_name = qemu_opt_get(opts, "process");
552 if (proc_name) {
553 os_set_proc_name(proc_name);
554 }
555
556 return 0;
557 }
558
559 bool defaults_enabled(void)
560 {
561 return has_defaults;
562 }
563
564 #ifndef _WIN32
565 static int parse_add_fd(void *opaque, QemuOpts *opts, Error **errp)
566 {
567 int fd, dupfd, flags;
568 int64_t fdset_id;
569 const char *fd_opaque = NULL;
570 AddfdInfo *fdinfo;
571
572 fd = qemu_opt_get_number(opts, "fd", -1);
573 fdset_id = qemu_opt_get_number(opts, "set", -1);
574 fd_opaque = qemu_opt_get(opts, "opaque");
575
576 if (fd < 0) {
577 error_setg(errp, "fd option is required and must be non-negative");
578 return -1;
579 }
580
581 if (fd <= STDERR_FILENO) {
582 error_setg(errp, "fd cannot be a standard I/O stream");
583 return -1;
584 }
585
586 /*
587 * All fds inherited across exec() necessarily have FD_CLOEXEC
588 * clear, while qemu sets FD_CLOEXEC on all other fds used internally.
589 */
590 flags = fcntl(fd, F_GETFD);
591 if (flags == -1 || (flags & FD_CLOEXEC)) {
592 error_setg(errp, "fd is not valid or already in use");
593 return -1;
594 }
595
596 if (fdset_id < 0) {
597 error_setg(errp, "set option is required and must be non-negative");
598 return -1;
599 }
600
601 #ifdef F_DUPFD_CLOEXEC
602 dupfd = fcntl(fd, F_DUPFD_CLOEXEC, 0);
603 #else
604 dupfd = dup(fd);
605 if (dupfd != -1) {
606 qemu_set_cloexec(dupfd);
607 }
608 #endif
609 if (dupfd == -1) {
610 error_setg(errp, "error duplicating fd: %s", strerror(errno));
611 return -1;
612 }
613
614 /* add the duplicate fd, and optionally the opaque string, to the fd set */
615 fdinfo = monitor_fdset_add_fd(dupfd, true, fdset_id, fd_opaque,
616 &error_abort);
617 g_free(fdinfo);
618
619 return 0;
620 }
621
622 static int cleanup_add_fd(void *opaque, QemuOpts *opts, Error **errp)
623 {
624 int fd;
625
626 fd = qemu_opt_get_number(opts, "fd", -1);
627 close(fd);
628
629 return 0;
630 }
631 #endif
632
633 /***********************************************************/
634 /* QEMU Block devices */
635
636 #define HD_OPTS "media=disk"
637 #define CDROM_OPTS "media=cdrom"
638 #define FD_OPTS ""
639 #define PFLASH_OPTS ""
640 #define MTD_OPTS ""
641 #define SD_OPTS ""
642
643 static int drive_init_func(void *opaque, QemuOpts *opts, Error **errp)
644 {
645 BlockInterfaceType *block_default_type = opaque;
646
647 return drive_new(opts, *block_default_type, errp) == NULL;
648 }
649
650 static int drive_enable_snapshot(void *opaque, QemuOpts *opts, Error **errp)
651 {
652 if (qemu_opt_get(opts, "snapshot") == NULL) {
653 qemu_opt_set(opts, "snapshot", "on", &error_abort);
654 }
655 return 0;
656 }
657
658 static void default_drive(int enable, int snapshot, BlockInterfaceType type,
659 int index, const char *optstr)
660 {
661 QemuOpts *opts;
662 DriveInfo *dinfo;
663
664 if (!enable || drive_get_by_index(type, index)) {
665 return;
666 }
667
668 opts = drive_add(type, index, NULL, optstr);
669 if (snapshot) {
670 drive_enable_snapshot(NULL, opts, NULL);
671 }
672
673 dinfo = drive_new(opts, type, &error_abort);
674 dinfo->is_default = true;
675
676 }
677
678 static void configure_blockdev(BlockdevOptionsQueue *bdo_queue,
679 MachineClass *machine_class, int snapshot)
680 {
681 /*
682 * If the currently selected machine wishes to override the
683 * units-per-bus property of its default HBA interface type, do so
684 * now.
685 */
686 if (machine_class->units_per_default_bus) {
687 override_max_devs(machine_class->block_default_type,
688 machine_class->units_per_default_bus);
689 }
690
691 /* open the virtual block devices */
692 while (!QSIMPLEQ_EMPTY(bdo_queue)) {
693 BlockdevOptionsQueueEntry *bdo = QSIMPLEQ_FIRST(bdo_queue);
694
695 QSIMPLEQ_REMOVE_HEAD(bdo_queue, entry);
696 loc_push_restore(&bdo->loc);
697 qmp_blockdev_add(bdo->bdo, &error_fatal);
698 loc_pop(&bdo->loc);
699 qapi_free_BlockdevOptions(bdo->bdo);
700 g_free(bdo);
701 }
702 if (snapshot) {
703 qemu_opts_foreach(qemu_find_opts("drive"), drive_enable_snapshot,
704 NULL, NULL);
705 }
706 if (qemu_opts_foreach(qemu_find_opts("drive"), drive_init_func,
707 &machine_class->block_default_type, &error_fatal)) {
708 /* We printed help */
709 exit(0);
710 }
711
712 default_drive(default_cdrom, snapshot, machine_class->block_default_type, 2,
713 CDROM_OPTS);
714 default_drive(default_floppy, snapshot, IF_FLOPPY, 0, FD_OPTS);
715 default_drive(default_sdcard, snapshot, IF_SD, 0, SD_OPTS);
716
717 }
718
719 static QemuOptsList qemu_smp_opts = {
720 .name = "smp-opts",
721 .implied_opt_name = "cpus",
722 .merge_lists = true,
723 .head = QTAILQ_HEAD_INITIALIZER(qemu_smp_opts.head),
724 .desc = {
725 {
726 .name = "cpus",
727 .type = QEMU_OPT_NUMBER,
728 }, {
729 .name = "sockets",
730 .type = QEMU_OPT_NUMBER,
731 }, {
732 .name = "dies",
733 .type = QEMU_OPT_NUMBER,
734 }, {
735 .name = "clusters",
736 .type = QEMU_OPT_NUMBER,
737 }, {
738 .name = "cores",
739 .type = QEMU_OPT_NUMBER,
740 }, {
741 .name = "threads",
742 .type = QEMU_OPT_NUMBER,
743 }, {
744 .name = "maxcpus",
745 .type = QEMU_OPT_NUMBER,
746 },
747 { /*End of list */ }
748 },
749 };
750
751 static void realtime_init(void)
752 {
753 if (enable_mlock) {
754 if (os_mlock() < 0) {
755 error_report("locking memory failed");
756 exit(1);
757 }
758 }
759 }
760
761
762 static void configure_msg(QemuOpts *opts)
763 {
764 message_with_timestamp = qemu_opt_get_bool(opts, "timestamp", false);
765 error_with_guestname = qemu_opt_get_bool(opts, "guest-name", false);
766 }
767
768
769 /***********************************************************/
770 /* USB devices */
771
772 static int usb_device_add(const char *devname)
773 {
774 USBDevice *dev = NULL;
775
776 if (!machine_usb(current_machine)) {
777 return -1;
778 }
779
780 dev = usbdevice_create(devname);
781 if (!dev)
782 return -1;
783
784 return 0;
785 }
786
787 static int usb_parse(const char *cmdline)
788 {
789 int r;
790 r = usb_device_add(cmdline);
791 if (r < 0) {
792 error_report("could not add USB device '%s'", cmdline);
793 }
794 return r;
795 }
796
797 /***********************************************************/
798 /* machine registration */
799
800 static MachineClass *find_machine(const char *name, GSList *machines)
801 {
802 GSList *el;
803
804 for (el = machines; el; el = el->next) {
805 MachineClass *mc = el->data;
806
807 if (!strcmp(mc->name, name) || !g_strcmp0(mc->alias, name)) {
808 return mc;
809 }
810 }
811
812 return NULL;
813 }
814
815 static MachineClass *find_default_machine(GSList *machines)
816 {
817 GSList *el;
818 MachineClass *default_machineclass = NULL;
819
820 for (el = machines; el; el = el->next) {
821 MachineClass *mc = el->data;
822
823 if (mc->is_default) {
824 assert(default_machineclass == NULL && "Multiple default machines");
825 default_machineclass = mc;
826 }
827 }
828
829 return default_machineclass;
830 }
831
832 static void version(void)
833 {
834 printf("QEMU emulator version " QEMU_FULL_VERSION "\n"
835 QEMU_COPYRIGHT "\n");
836 }
837
838 static void help(int exitcode)
839 {
840 version();
841 printf("usage: %s [options] [disk_image]\n\n"
842 "'disk_image' is a raw hard disk image for IDE hard disk 0\n\n",
843 g_get_prgname());
844
845 #define DEF(option, opt_arg, opt_enum, opt_help, arch_mask) \
846 if ((arch_mask) & arch_type) \
847 fputs(opt_help, stdout);
848
849 #define ARCHHEADING(text, arch_mask) \
850 if ((arch_mask) & arch_type) \
851 puts(stringify(text));
852
853 #define DEFHEADING(text) ARCHHEADING(text, QEMU_ARCH_ALL)
854
855 #include "qemu-options.def"
856
857 printf("\nDuring emulation, the following keys are useful:\n"
858 "ctrl-alt-f toggle full screen\n"
859 "ctrl-alt-n switch to virtual console 'n'\n"
860 "ctrl-alt toggle mouse and keyboard grab\n"
861 "\n"
862 "When using -nographic, press 'ctrl-a h' to get some help.\n"
863 "\n"
864 QEMU_HELP_BOTTOM "\n");
865
866 exit(exitcode);
867 }
868
869 #define HAS_ARG 0x0001
870
871 typedef struct QEMUOption {
872 const char *name;
873 int flags;
874 int index;
875 uint32_t arch_mask;
876 } QEMUOption;
877
878 static const QEMUOption qemu_options[] = {
879 { "h", 0, QEMU_OPTION_h, QEMU_ARCH_ALL },
880
881 #define DEF(option, opt_arg, opt_enum, opt_help, arch_mask) \
882 { option, opt_arg, opt_enum, arch_mask },
883 #define DEFHEADING(text)
884 #define ARCHHEADING(text, arch_mask)
885
886 #include "qemu-options.def"
887 { /* end of list */ }
888 };
889
890 typedef struct VGAInterfaceInfo {
891 const char *opt_name; /* option name */
892 const char *name; /* human-readable name */
893 /* Class names indicating that support is available.
894 * If no class is specified, the interface is always available */
895 const char *class_names[2];
896 } VGAInterfaceInfo;
897
898 static const VGAInterfaceInfo vga_interfaces[VGA_TYPE_MAX] = {
899 [VGA_NONE] = {
900 .opt_name = "none",
901 .name = "no graphic card",
902 },
903 [VGA_STD] = {
904 .opt_name = "std",
905 .name = "standard VGA",
906 .class_names = { "VGA", "isa-vga" },
907 },
908 [VGA_CIRRUS] = {
909 .opt_name = "cirrus",
910 .name = "Cirrus VGA",
911 .class_names = { "cirrus-vga", "isa-cirrus-vga" },
912 },
913 [VGA_VMWARE] = {
914 .opt_name = "vmware",
915 .name = "VMWare SVGA",
916 .class_names = { "vmware-svga" },
917 },
918 [VGA_VIRTIO] = {
919 .opt_name = "virtio",
920 .name = "Virtio VGA",
921 .class_names = { "virtio-vga" },
922 },
923 [VGA_QXL] = {
924 .opt_name = "qxl",
925 .name = "QXL VGA",
926 .class_names = { "qxl-vga" },
927 },
928 [VGA_TCX] = {
929 .opt_name = "tcx",
930 .name = "TCX framebuffer",
931 .class_names = { "sun-tcx" },
932 },
933 [VGA_CG3] = {
934 .opt_name = "cg3",
935 .name = "CG3 framebuffer",
936 .class_names = { "cgthree" },
937 },
938 #ifdef CONFIG_XEN_BACKEND
939 [VGA_XENFB] = {
940 .opt_name = "xenfb",
941 .name = "Xen paravirtualized framebuffer",
942 },
943 #endif
944 };
945
946 static bool vga_interface_available(VGAInterfaceType t)
947 {
948 const VGAInterfaceInfo *ti = &vga_interfaces[t];
949
950 assert(t < VGA_TYPE_MAX);
951 return !ti->class_names[0] ||
952 module_object_class_by_name(ti->class_names[0]) ||
953 module_object_class_by_name(ti->class_names[1]);
954 }
955
956 static const char *
957 get_default_vga_model(const MachineClass *machine_class)
958 {
959 if (machine_class->default_display) {
960 for (int t = 0; t < VGA_TYPE_MAX; t++) {
961 const VGAInterfaceInfo *ti = &vga_interfaces[t];
962
963 if (ti->opt_name && vga_interface_available(t) &&
964 g_str_equal(ti->opt_name, machine_class->default_display)) {
965 return machine_class->default_display;
966 }
967 }
968
969 warn_report_once("Default display '%s' is not available in this binary",
970 machine_class->default_display);
971 return NULL;
972 } else if (vga_interface_available(VGA_CIRRUS)) {
973 return "cirrus";
974 } else if (vga_interface_available(VGA_STD)) {
975 return "std";
976 }
977
978 return NULL;
979 }
980
981 static void select_vgahw(const MachineClass *machine_class, const char *p)
982 {
983 const char *opts;
984 int t;
985
986 if (g_str_equal(p, "help")) {
987 const char *def = get_default_vga_model(machine_class);
988
989 for (t = 0; t < VGA_TYPE_MAX; t++) {
990 const VGAInterfaceInfo *ti = &vga_interfaces[t];
991
992 if (vga_interface_available(t) && ti->opt_name) {
993 printf("%-20s %s%s\n", ti->opt_name, ti->name ?: "",
994 (def && g_str_equal(ti->opt_name, def)) ?
995 " (default)" : "");
996 }
997 }
998 exit(0);
999 }
1000
1001 assert(vga_interface_type == VGA_NONE);
1002 for (t = 0; t < VGA_TYPE_MAX; t++) {
1003 const VGAInterfaceInfo *ti = &vga_interfaces[t];
1004 if (ti->opt_name && strstart(p, ti->opt_name, &opts)) {
1005 if (!vga_interface_available(t)) {
1006 error_report("%s not available", ti->name);
1007 exit(1);
1008 }
1009 vga_interface_type = t;
1010 break;
1011 }
1012 }
1013 if (t == VGA_TYPE_MAX) {
1014 invalid_vga:
1015 error_report("unknown vga type: %s", p);
1016 exit(1);
1017 }
1018 while (*opts) {
1019 const char *nextopt;
1020
1021 if (strstart(opts, ",retrace=", &nextopt)) {
1022 opts = nextopt;
1023 if (strstart(opts, "dumb", &nextopt))
1024 vga_retrace_method = VGA_RETRACE_DUMB;
1025 else if (strstart(opts, "precise", &nextopt))
1026 vga_retrace_method = VGA_RETRACE_PRECISE;
1027 else goto invalid_vga;
1028 } else goto invalid_vga;
1029 opts = nextopt;
1030 }
1031 }
1032
1033 static void parse_display_qapi(const char *optarg)
1034 {
1035 DisplayOptions *opts;
1036 Visitor *v;
1037
1038 v = qobject_input_visitor_new_str(optarg, "type", &error_fatal);
1039
1040 visit_type_DisplayOptions(v, NULL, &opts, &error_fatal);
1041 QAPI_CLONE_MEMBERS(DisplayOptions, &dpy, opts);
1042
1043 qapi_free_DisplayOptions(opts);
1044 visit_free(v);
1045 }
1046
1047 DisplayOptions *qmp_query_display_options(Error **errp)
1048 {
1049 return QAPI_CLONE(DisplayOptions, &dpy);
1050 }
1051
1052 static void parse_display(const char *p)
1053 {
1054 const char *opts;
1055
1056 if (is_help_option(p)) {
1057 qemu_display_help();
1058 exit(0);
1059 }
1060
1061 if (strstart(p, "vnc", &opts)) {
1062 /*
1063 * vnc isn't a (local) DisplayType but a protocol for remote
1064 * display access.
1065 */
1066 if (*opts == '=') {
1067 vnc_parse(opts + 1);
1068 } else {
1069 error_report("VNC requires a display argument vnc=<display>");
1070 exit(1);
1071 }
1072 } else {
1073 parse_display_qapi(p);
1074 }
1075 }
1076
1077 static inline bool nonempty_str(const char *str)
1078 {
1079 return str && *str;
1080 }
1081
1082 static int parse_fw_cfg(void *opaque, QemuOpts *opts, Error **errp)
1083 {
1084 gchar *buf;
1085 size_t size;
1086 const char *name, *file, *str, *gen_id;
1087 FWCfgState *fw_cfg = (FWCfgState *) opaque;
1088
1089 if (fw_cfg == NULL) {
1090 error_setg(errp, "fw_cfg device not available");
1091 return -1;
1092 }
1093 name = qemu_opt_get(opts, "name");
1094 file = qemu_opt_get(opts, "file");
1095 str = qemu_opt_get(opts, "string");
1096 gen_id = qemu_opt_get(opts, "gen_id");
1097
1098 /* we need the name, and exactly one of: file, content string, gen_id */
1099 if (!nonempty_str(name) ||
1100 nonempty_str(file) + nonempty_str(str) + nonempty_str(gen_id) != 1) {
1101 error_setg(errp, "name, plus exactly one of file,"
1102 " string and gen_id, are needed");
1103 return -1;
1104 }
1105 if (strlen(name) > FW_CFG_MAX_FILE_PATH - 1) {
1106 error_setg(errp, "name too long (max. %d char)",
1107 FW_CFG_MAX_FILE_PATH - 1);
1108 return -1;
1109 }
1110 if (nonempty_str(gen_id)) {
1111 /*
1112 * In this particular case where the content is populated
1113 * internally, the "etc/" namespace protection is relaxed,
1114 * so do not emit a warning.
1115 */
1116 } else if (strncmp(name, "opt/", 4) != 0) {
1117 warn_report("externally provided fw_cfg item names "
1118 "should be prefixed with \"opt/\"");
1119 }
1120 if (nonempty_str(str)) {
1121 size = strlen(str); /* NUL terminator NOT included in fw_cfg blob */
1122 buf = g_memdup(str, size);
1123 } else if (nonempty_str(gen_id)) {
1124 if (!fw_cfg_add_from_generator(fw_cfg, name, gen_id, errp)) {
1125 return -1;
1126 }
1127 return 0;
1128 } else {
1129 GError *err = NULL;
1130 if (!g_file_get_contents(file, &buf, &size, &err)) {
1131 error_setg(errp, "can't load %s: %s", file, err->message);
1132 g_error_free(err);
1133 return -1;
1134 }
1135 }
1136 /* For legacy, keep user files in a specific global order. */
1137 fw_cfg_set_order_override(fw_cfg, FW_CFG_ORDER_OVERRIDE_USER);
1138 fw_cfg_add_file(fw_cfg, name, buf, size);
1139 fw_cfg_reset_order_override(fw_cfg);
1140 return 0;
1141 }
1142
1143 static int device_help_func(void *opaque, QemuOpts *opts, Error **errp)
1144 {
1145 return qdev_device_help(opts);
1146 }
1147
1148 static int device_init_func(void *opaque, QemuOpts *opts, Error **errp)
1149 {
1150 DeviceState *dev;
1151
1152 dev = qdev_device_add(opts, errp);
1153 if (!dev && *errp) {
1154 error_report_err(*errp);
1155 return -1;
1156 } else if (dev) {
1157 object_unref(OBJECT(dev));
1158 }
1159 return 0;
1160 }
1161
1162 static int chardev_init_func(void *opaque, QemuOpts *opts, Error **errp)
1163 {
1164 Error *local_err = NULL;
1165
1166 if (!qemu_chr_new_from_opts(opts, NULL, &local_err)) {
1167 if (local_err) {
1168 error_propagate(errp, local_err);
1169 return -1;
1170 }
1171 exit(0);
1172 }
1173 return 0;
1174 }
1175
1176 #ifdef CONFIG_VIRTFS
1177 static int fsdev_init_func(void *opaque, QemuOpts *opts, Error **errp)
1178 {
1179 return qemu_fsdev_add(opts, errp);
1180 }
1181 #endif
1182
1183 static int mon_init_func(void *opaque, QemuOpts *opts, Error **errp)
1184 {
1185 return monitor_init_opts(opts, errp);
1186 }
1187
1188 static void monitor_parse(const char *optarg, const char *mode, bool pretty)
1189 {
1190 static int monitor_device_index = 0;
1191 QemuOpts *opts;
1192 const char *p;
1193 char label[32];
1194
1195 if (strstart(optarg, "chardev:", &p)) {
1196 snprintf(label, sizeof(label), "%s", p);
1197 } else {
1198 snprintf(label, sizeof(label), "compat_monitor%d",
1199 monitor_device_index);
1200 opts = qemu_chr_parse_compat(label, optarg, true);
1201 if (!opts) {
1202 error_report("parse error: %s", optarg);
1203 exit(1);
1204 }
1205 }
1206
1207 opts = qemu_opts_create(qemu_find_opts("mon"), label, 1, &error_fatal);
1208 qemu_opt_set(opts, "mode", mode, &error_abort);
1209 qemu_opt_set(opts, "chardev", label, &error_abort);
1210 if (!strcmp(mode, "control")) {
1211 qemu_opt_set_bool(opts, "pretty", pretty, &error_abort);
1212 } else {
1213 assert(pretty == false);
1214 }
1215 monitor_device_index++;
1216 }
1217
1218 struct device_config {
1219 enum {
1220 DEV_USB, /* -usbdevice */
1221 DEV_SERIAL, /* -serial */
1222 DEV_PARALLEL, /* -parallel */
1223 DEV_DEBUGCON, /* -debugcon */
1224 DEV_GDB, /* -gdb, -s */
1225 DEV_SCLP, /* s390 sclp */
1226 } type;
1227 const char *cmdline;
1228 Location loc;
1229 QTAILQ_ENTRY(device_config) next;
1230 };
1231
1232 static QTAILQ_HEAD(, device_config) device_configs =
1233 QTAILQ_HEAD_INITIALIZER(device_configs);
1234
1235 static void add_device_config(int type, const char *cmdline)
1236 {
1237 struct device_config *conf;
1238
1239 conf = g_malloc0(sizeof(*conf));
1240 conf->type = type;
1241 conf->cmdline = cmdline;
1242 loc_save(&conf->loc);
1243 QTAILQ_INSERT_TAIL(&device_configs, conf, next);
1244 }
1245
1246 static int foreach_device_config(int type, int (*func)(const char *cmdline))
1247 {
1248 struct device_config *conf;
1249 int rc;
1250
1251 QTAILQ_FOREACH(conf, &device_configs, next) {
1252 if (conf->type != type)
1253 continue;
1254 loc_push_restore(&conf->loc);
1255 rc = func(conf->cmdline);
1256 loc_pop(&conf->loc);
1257 if (rc) {
1258 return rc;
1259 }
1260 }
1261 return 0;
1262 }
1263
1264 static void qemu_disable_default_devices(void)
1265 {
1266 MachineClass *machine_class = MACHINE_GET_CLASS(current_machine);
1267
1268 default_driver_check_json();
1269 qemu_opts_foreach(qemu_find_opts("device"),
1270 default_driver_check, NULL, NULL);
1271 qemu_opts_foreach(qemu_find_opts("global"),
1272 default_driver_check, NULL, NULL);
1273
1274 if (!vga_model && !default_vga) {
1275 vga_interface_type = VGA_DEVICE;
1276 vga_interface_created = true;
1277 }
1278 if (!has_defaults || machine_class->no_serial) {
1279 default_serial = 0;
1280 }
1281 if (!has_defaults || machine_class->no_parallel) {
1282 default_parallel = 0;
1283 }
1284 if (!has_defaults || machine_class->no_floppy) {
1285 default_floppy = 0;
1286 }
1287 if (!has_defaults || machine_class->no_cdrom) {
1288 default_cdrom = 0;
1289 }
1290 if (!has_defaults || machine_class->no_sdcard) {
1291 default_sdcard = 0;
1292 }
1293 if (!has_defaults) {
1294 default_monitor = 0;
1295 default_net = 0;
1296 default_vga = 0;
1297 } else {
1298 if (default_net && machine_class->default_nic &&
1299 !module_object_class_by_name(machine_class->default_nic)) {
1300 warn_report("Default NIC '%s' is not available in this binary",
1301 machine_class->default_nic);
1302 default_net = 0;
1303 }
1304 }
1305 }
1306
1307 static void qemu_create_default_devices(void)
1308 {
1309 MachineClass *machine_class = MACHINE_GET_CLASS(current_machine);
1310
1311 if (is_daemonized()) {
1312 /* According to documentation and historically, -nographic redirects
1313 * serial port, parallel port and monitor to stdio, which does not work
1314 * with -daemonize. We can redirect these to null instead, but since
1315 * -nographic is legacy, let's just error out.
1316 * We disallow -nographic only if all other ports are not redirected
1317 * explicitly, to not break existing legacy setups which uses
1318 * -nographic _and_ redirects all ports explicitly - this is valid
1319 * usage, -nographic is just a no-op in this case.
1320 */
1321 if (nographic
1322 && (default_parallel || default_serial || default_monitor)) {
1323 error_report("-nographic cannot be used with -daemonize");
1324 exit(1);
1325 }
1326 }
1327
1328 if (nographic) {
1329 if (default_parallel)
1330 add_device_config(DEV_PARALLEL, "null");
1331 if (default_serial && default_monitor) {
1332 add_device_config(DEV_SERIAL, "mon:stdio");
1333 } else {
1334 if (default_serial)
1335 add_device_config(DEV_SERIAL, "stdio");
1336 if (default_monitor)
1337 monitor_parse("stdio", "readline", false);
1338 }
1339 } else {
1340 if (default_serial)
1341 add_device_config(DEV_SERIAL, "vc:80Cx24C");
1342 if (default_parallel)
1343 add_device_config(DEV_PARALLEL, "vc:80Cx24C");
1344 if (default_monitor)
1345 monitor_parse("vc:80Cx24C", "readline", false);
1346 }
1347
1348 if (default_net) {
1349 QemuOptsList *net = qemu_find_opts("net");
1350 qemu_opts_parse(net, "nic", true, &error_abort);
1351 #ifdef CONFIG_SLIRP
1352 qemu_opts_parse(net, "user", true, &error_abort);
1353 #endif
1354 }
1355
1356 #if defined(CONFIG_VNC)
1357 if (!QTAILQ_EMPTY(&(qemu_find_opts("vnc")->head))) {
1358 display_remote++;
1359 }
1360 #endif
1361 if (dpy.type == DISPLAY_TYPE_DEFAULT && !display_remote) {
1362 if (!qemu_display_find_default(&dpy)) {
1363 dpy.type = DISPLAY_TYPE_NONE;
1364 #if defined(CONFIG_VNC)
1365 vnc_parse("localhost:0,to=99,id=default");
1366 #endif
1367 }
1368 }
1369 if (dpy.type == DISPLAY_TYPE_DEFAULT) {
1370 dpy.type = DISPLAY_TYPE_NONE;
1371 }
1372
1373 /* If no default VGA is requested, the default is "none". */
1374 if (default_vga) {
1375 vga_model = get_default_vga_model(machine_class);
1376 }
1377 if (vga_model) {
1378 select_vgahw(machine_class, vga_model);
1379 }
1380 }
1381
1382 static int serial_parse(const char *devname)
1383 {
1384 int index = num_serial_hds;
1385 char label[32];
1386
1387 if (strcmp(devname, "none") == 0)
1388 return 0;
1389 snprintf(label, sizeof(label), "serial%d", index);
1390 serial_hds = g_renew(Chardev *, serial_hds, index + 1);
1391
1392 serial_hds[index] = qemu_chr_new_mux_mon(label, devname, NULL);
1393 if (!serial_hds[index]) {
1394 error_report("could not connect serial device"
1395 " to character backend '%s'", devname);
1396 return -1;
1397 }
1398 num_serial_hds++;
1399 return 0;
1400 }
1401
1402 Chardev *serial_hd(int i)
1403 {
1404 assert(i >= 0);
1405 if (i < num_serial_hds) {
1406 return serial_hds[i];
1407 }
1408 return NULL;
1409 }
1410
1411 static int parallel_parse(const char *devname)
1412 {
1413 static int index = 0;
1414 char label[32];
1415
1416 if (strcmp(devname, "none") == 0)
1417 return 0;
1418 if (index == MAX_PARALLEL_PORTS) {
1419 error_report("too many parallel ports");
1420 exit(1);
1421 }
1422 snprintf(label, sizeof(label), "parallel%d", index);
1423 parallel_hds[index] = qemu_chr_new_mux_mon(label, devname, NULL);
1424 if (!parallel_hds[index]) {
1425 error_report("could not connect parallel device"
1426 " to character backend '%s'", devname);
1427 return -1;
1428 }
1429 index++;
1430 return 0;
1431 }
1432
1433 static int debugcon_parse(const char *devname)
1434 {
1435 QemuOpts *opts;
1436
1437 if (!qemu_chr_new_mux_mon("debugcon", devname, NULL)) {
1438 error_report("invalid character backend '%s'", devname);
1439 exit(1);
1440 }
1441 opts = qemu_opts_create(qemu_find_opts("device"), "debugcon", 1, NULL);
1442 if (!opts) {
1443 error_report("already have a debugcon device");
1444 exit(1);
1445 }
1446 qemu_opt_set(opts, "driver", "isa-debugcon", &error_abort);
1447 qemu_opt_set(opts, "chardev", "debugcon", &error_abort);
1448 return 0;
1449 }
1450
1451 static gint machine_class_cmp(gconstpointer a, gconstpointer b)
1452 {
1453 const MachineClass *mc1 = a, *mc2 = b;
1454 int res;
1455
1456 if (mc1->family == NULL) {
1457 if (mc2->family == NULL) {
1458 /* Compare standalone machine types against each other; they sort
1459 * in increasing order.
1460 */
1461 return strcmp(object_class_get_name(OBJECT_CLASS(mc1)),
1462 object_class_get_name(OBJECT_CLASS(mc2)));
1463 }
1464
1465 /* Standalone machine types sort after families. */
1466 return 1;
1467 }
1468
1469 if (mc2->family == NULL) {
1470 /* Families sort before standalone machine types. */
1471 return -1;
1472 }
1473
1474 /* Families sort between each other alphabetically increasingly. */
1475 res = strcmp(mc1->family, mc2->family);
1476 if (res != 0) {
1477 return res;
1478 }
1479
1480 /* Within the same family, machine types sort in decreasing order. */
1481 return strcmp(object_class_get_name(OBJECT_CLASS(mc2)),
1482 object_class_get_name(OBJECT_CLASS(mc1)));
1483 }
1484
1485 static void machine_help_func(const QDict *qdict)
1486 {
1487 GSList *machines, *el;
1488 const char *type = qdict_get_try_str(qdict, "type");
1489
1490 machines = object_class_get_list(TYPE_MACHINE, false);
1491 if (type) {
1492 ObjectClass *machine_class = OBJECT_CLASS(find_machine(type, machines));
1493 if (machine_class) {
1494 type_print_class_properties(object_class_get_name(machine_class));
1495 return;
1496 }
1497 }
1498
1499 printf("Supported machines are:\n");
1500 machines = g_slist_sort(machines, machine_class_cmp);
1501 for (el = machines; el; el = el->next) {
1502 MachineClass *mc = el->data;
1503 if (mc->alias) {
1504 printf("%-20s %s (alias of %s)\n", mc->alias, mc->desc, mc->name);
1505 }
1506 printf("%-20s %s%s%s\n", mc->name, mc->desc,
1507 mc->is_default ? " (default)" : "",
1508 mc->deprecation_reason ? " (deprecated)" : "");
1509 }
1510 }
1511
1512 static void
1513 machine_merge_property(const char *propname, QDict *prop, Error **errp)
1514 {
1515 QDict *opts;
1516
1517 opts = qdict_new();
1518 /* Preserve the caller's reference to prop. */
1519 qobject_ref(prop);
1520 qdict_put(opts, propname, prop);
1521 keyval_merge(machine_opts_dict, opts, errp);
1522 qobject_unref(opts);
1523 }
1524
1525 static void
1526 machine_parse_property_opt(QemuOptsList *opts_list, const char *propname,
1527 const char *arg)
1528 {
1529 QDict *prop = NULL;
1530 bool help = false;
1531
1532 prop = keyval_parse(arg, opts_list->implied_opt_name, &help, &error_fatal);
1533 if (help) {
1534 qemu_opts_print_help(opts_list, true);
1535 exit(0);
1536 }
1537 machine_merge_property(propname, prop, &error_fatal);
1538 qobject_unref(prop);
1539 }
1540
1541 static const char *pid_file;
1542 struct UnlinkPidfileNotifier {
1543 Notifier notifier;
1544 char *pid_file_realpath;
1545 };
1546 static struct UnlinkPidfileNotifier qemu_unlink_pidfile_notifier;
1547
1548 static void qemu_unlink_pidfile(Notifier *n, void *data)
1549 {
1550 struct UnlinkPidfileNotifier *upn;
1551
1552 upn = DO_UPCAST(struct UnlinkPidfileNotifier, notifier, n);
1553 unlink(upn->pid_file_realpath);
1554 }
1555
1556 static const QEMUOption *lookup_opt(int argc, char **argv,
1557 const char **poptarg, int *poptind)
1558 {
1559 const QEMUOption *popt;
1560 int optind = *poptind;
1561 char *r = argv[optind];
1562 const char *optarg;
1563
1564 loc_set_cmdline(argv, optind, 1);
1565 optind++;
1566 /* Treat --foo the same as -foo. */
1567 if (r[1] == '-')
1568 r++;
1569 popt = qemu_options;
1570 for(;;) {
1571 if (!popt->name) {
1572 error_report("invalid option");
1573 exit(1);
1574 }
1575 if (!strcmp(popt->name, r + 1))
1576 break;
1577 popt++;
1578 }
1579 if (popt->flags & HAS_ARG) {
1580 if (optind >= argc) {
1581 error_report("requires an argument");
1582 exit(1);
1583 }
1584 optarg = argv[optind++];
1585 loc_set_cmdline(argv, optind - 2, 2);
1586 } else {
1587 optarg = NULL;
1588 }
1589
1590 *poptarg = optarg;
1591 *poptind = optind;
1592
1593 return popt;
1594 }
1595
1596 static MachineClass *select_machine(QDict *qdict, Error **errp)
1597 {
1598 const char *optarg = qdict_get_try_str(qdict, "type");
1599 GSList *machines = object_class_get_list(TYPE_MACHINE, false);
1600 MachineClass *machine_class;
1601 Error *local_err = NULL;
1602
1603 if (optarg) {
1604 machine_class = find_machine(optarg, machines);
1605 qdict_del(qdict, "type");
1606 if (!machine_class) {
1607 error_setg(&local_err, "unsupported machine type");
1608 }
1609 } else {
1610 machine_class = find_default_machine(machines);
1611 if (!machine_class) {
1612 error_setg(&local_err, "No machine specified, and there is no default");
1613 }
1614 }
1615
1616 g_slist_free(machines);
1617 if (local_err) {
1618 error_append_hint(&local_err, "Use -machine help to list supported machines\n");
1619 error_propagate(errp, local_err);
1620 }
1621 return machine_class;
1622 }
1623
1624 static int object_parse_property_opt(Object *obj,
1625 const char *name, const char *value,
1626 const char *skip, Error **errp)
1627 {
1628 if (g_str_equal(name, skip)) {
1629 return 0;
1630 }
1631
1632 if (!object_property_parse(obj, name, value, errp)) {
1633 return -1;
1634 }
1635
1636 return 0;
1637 }
1638
1639 /* *Non*recursively replace underscores with dashes in QDict keys. */
1640 static void keyval_dashify(QDict *qdict, Error **errp)
1641 {
1642 const QDictEntry *ent, *next;
1643 char *p;
1644
1645 for (ent = qdict_first(qdict); ent; ent = next) {
1646 g_autofree char *new_key = NULL;
1647
1648 next = qdict_next(qdict, ent);
1649 if (!strchr(ent->key, '_')) {
1650 continue;
1651 }
1652 new_key = g_strdup(ent->key);
1653 for (p = new_key; *p; p++) {
1654 if (*p == '_') {
1655 *p = '-';
1656 }
1657 }
1658 if (qdict_haskey(qdict, new_key)) {
1659 error_setg(errp, "Conflict between '%s' and '%s'", ent->key, new_key);
1660 return;
1661 }
1662 qobject_ref(ent->value);
1663 qdict_put_obj(qdict, new_key, ent->value);
1664 qdict_del(qdict, ent->key);
1665 }
1666 }
1667
1668 static void qemu_apply_legacy_machine_options(QDict *qdict)
1669 {
1670 const char *value;
1671 QObject *prop;
1672
1673 keyval_dashify(qdict, &error_fatal);
1674
1675 /* Legacy options do not correspond to MachineState properties. */
1676 value = qdict_get_try_str(qdict, "accel");
1677 if (value) {
1678 accelerators = g_strdup(value);
1679 qdict_del(qdict, "accel");
1680 }
1681
1682 value = qdict_get_try_str(qdict, "igd-passthru");
1683 if (value) {
1684 object_register_sugar_prop(ACCEL_CLASS_NAME("xen"), "igd-passthru", value,
1685 false);
1686 qdict_del(qdict, "igd-passthru");
1687 }
1688
1689 value = qdict_get_try_str(qdict, "kvm-shadow-mem");
1690 if (value) {
1691 object_register_sugar_prop(ACCEL_CLASS_NAME("kvm"), "kvm-shadow-mem", value,
1692 false);
1693 qdict_del(qdict, "kvm-shadow-mem");
1694 }
1695
1696 value = qdict_get_try_str(qdict, "kernel-irqchip");
1697 if (value) {
1698 object_register_sugar_prop(ACCEL_CLASS_NAME("kvm"), "kernel-irqchip", value,
1699 false);
1700 object_register_sugar_prop(ACCEL_CLASS_NAME("whpx"), "kernel-irqchip", value,
1701 false);
1702 qdict_del(qdict, "kernel-irqchip");
1703 }
1704
1705 value = qdict_get_try_str(qdict, "memory-backend");
1706 if (value) {
1707 if (mem_path) {
1708 error_report("'-mem-path' can't be used together with"
1709 "'-machine memory-backend'");
1710 exit(EXIT_FAILURE);
1711 }
1712
1713 /* Resolved later. */
1714 ram_memdev_id = g_strdup(value);
1715 qdict_del(qdict, "memory-backend");
1716 }
1717
1718 prop = qdict_get(qdict, "memory");
1719 if (prop) {
1720 have_custom_ram_size =
1721 qobject_type(prop) == QTYPE_QDICT &&
1722 qdict_haskey(qobject_to(QDict, prop), "size");
1723 }
1724 }
1725
1726 static void object_option_foreach_add(bool (*type_opt_predicate)(const char *))
1727 {
1728 ObjectOption *opt, *next;
1729
1730 QTAILQ_FOREACH_SAFE(opt, &object_opts, next, next) {
1731 const char *type = ObjectType_str(opt->opts->qom_type);
1732 if (type_opt_predicate(type)) {
1733 user_creatable_add_qapi(opt->opts, &error_fatal);
1734 qapi_free_ObjectOptions(opt->opts);
1735 QTAILQ_REMOVE(&object_opts, opt, next);
1736 g_free(opt);
1737 }
1738 }
1739 }
1740
1741 static void object_option_add_visitor(Visitor *v)
1742 {
1743 ObjectOption *opt = g_new0(ObjectOption, 1);
1744 visit_type_ObjectOptions(v, NULL, &opt->opts, &error_fatal);
1745 QTAILQ_INSERT_TAIL(&object_opts, opt, next);
1746 }
1747
1748 static void object_option_parse(const char *optarg)
1749 {
1750 QemuOpts *opts;
1751 const char *type;
1752 Visitor *v;
1753
1754 if (optarg[0] == '{') {
1755 QObject *obj = qobject_from_json(optarg, &error_fatal);
1756
1757 v = qobject_input_visitor_new(obj);
1758 qobject_unref(obj);
1759 } else {
1760 opts = qemu_opts_parse_noisily(qemu_find_opts("object"),
1761 optarg, true);
1762 if (!opts) {
1763 exit(1);
1764 }
1765
1766 type = qemu_opt_get(opts, "qom-type");
1767 if (!type) {
1768 error_setg(&error_fatal, QERR_MISSING_PARAMETER, "qom-type");
1769 }
1770 if (user_creatable_print_help(type, opts)) {
1771 exit(0);
1772 }
1773
1774 v = opts_visitor_new(opts);
1775 }
1776
1777 object_option_add_visitor(v);
1778 visit_free(v);
1779 }
1780
1781 /*
1782 * Very early object creation, before the sandbox options have been activated.
1783 */
1784 static bool object_create_pre_sandbox(const char *type)
1785 {
1786 /*
1787 * Objects should in general not get initialized "too early" without
1788 * a reason. If you add one, state the reason in a comment!
1789 */
1790
1791 /*
1792 * Reason: -sandbox on,resourcecontrol=deny disallows setting CPU
1793 * affinity of threads.
1794 */
1795 if (g_str_equal(type, "thread-context")) {
1796 return true;
1797 }
1798
1799 return false;
1800 }
1801
1802 /*
1803 * Initial object creation happens before all other
1804 * QEMU data types are created. The majority of objects
1805 * can be created at this point. The rng-egd object
1806 * cannot be created here, as it depends on the chardev
1807 * already existing.
1808 */
1809 static bool object_create_early(const char *type)
1810 {
1811 /*
1812 * Objects should not be made "delayed" without a reason. If you
1813 * add one, state the reason in a comment!
1814 */
1815
1816 /* Reason: already created. */
1817 if (object_create_pre_sandbox(type)) {
1818 return false;
1819 }
1820
1821 /* Reason: property "chardev" */
1822 if (g_str_equal(type, "rng-egd") ||
1823 g_str_equal(type, "qtest")) {
1824 return false;
1825 }
1826
1827 #if defined(CONFIG_VHOST_USER) && defined(CONFIG_LINUX)
1828 /* Reason: cryptodev-vhost-user property "chardev" */
1829 if (g_str_equal(type, "cryptodev-vhost-user")) {
1830 return false;
1831 }
1832 #endif
1833
1834 /* Reason: vhost-user-blk-server property "node-name" */
1835 if (g_str_equal(type, "vhost-user-blk-server")) {
1836 return false;
1837 }
1838 /*
1839 * Reason: filter-* property "netdev" etc.
1840 */
1841 if (g_str_equal(type, "filter-buffer") ||
1842 g_str_equal(type, "filter-dump") ||
1843 g_str_equal(type, "filter-mirror") ||
1844 g_str_equal(type, "filter-redirector") ||
1845 g_str_equal(type, "colo-compare") ||
1846 g_str_equal(type, "filter-rewriter") ||
1847 g_str_equal(type, "filter-replay")) {
1848 return false;
1849 }
1850
1851 /*
1852 * Allocation of large amounts of memory may delay
1853 * chardev initialization for too long, and trigger timeouts
1854 * on software that waits for a monitor socket to be created
1855 * (e.g. libvirt).
1856 */
1857 if (g_str_has_prefix(type, "memory-backend-")) {
1858 return false;
1859 }
1860
1861 return true;
1862 }
1863
1864 static void qemu_apply_machine_options(QDict *qdict)
1865 {
1866 object_set_properties_from_keyval(OBJECT(current_machine), qdict, false, &error_fatal);
1867
1868 if (semihosting_enabled(false) && !semihosting_get_argc()) {
1869 /* fall back to the -kernel/-append */
1870 semihosting_arg_fallback(current_machine->kernel_filename, current_machine->kernel_cmdline);
1871 }
1872
1873 if (current_machine->smp.cpus > 1) {
1874 replay_add_blocker("smp");
1875 }
1876 }
1877
1878 static void qemu_create_early_backends(void)
1879 {
1880 MachineClass *machine_class = MACHINE_GET_CLASS(current_machine);
1881 #if defined(CONFIG_SDL)
1882 const bool use_sdl = (dpy.type == DISPLAY_TYPE_SDL);
1883 #else
1884 const bool use_sdl = false;
1885 #endif
1886 #if defined(CONFIG_GTK)
1887 const bool use_gtk = (dpy.type == DISPLAY_TYPE_GTK);
1888 #else
1889 const bool use_gtk = false;
1890 #endif
1891
1892 if (dpy.has_window_close && !use_gtk && !use_sdl) {
1893 error_report("window-close is only valid for GTK and SDL, "
1894 "ignoring option");
1895 }
1896
1897 qemu_display_early_init(&dpy);
1898 qemu_console_early_init();
1899
1900 if (dpy.has_gl && dpy.gl != DISPLAYGL_MODE_OFF && display_opengl == 0) {
1901 #if defined(CONFIG_OPENGL)
1902 error_report("OpenGL is not supported by the display");
1903 #else
1904 error_report("OpenGL support is disabled");
1905 #endif
1906 exit(1);
1907 }
1908
1909 object_option_foreach_add(object_create_early);
1910
1911 /* spice needs the timers to be initialized by this point */
1912 /* spice must initialize before audio as it changes the default audiodev */
1913 /* spice must initialize before chardevs (for spicevmc and spiceport) */
1914 qemu_spice.init();
1915
1916 qemu_opts_foreach(qemu_find_opts("chardev"),
1917 chardev_init_func, NULL, &error_fatal);
1918
1919 #ifdef CONFIG_VIRTFS
1920 qemu_opts_foreach(qemu_find_opts("fsdev"),
1921 fsdev_init_func, NULL, &error_fatal);
1922 #endif
1923
1924 /*
1925 * Note: we need to create audio and block backends before
1926 * setting machine properties, so they can be referred to.
1927 */
1928 configure_blockdev(&bdo_queue, machine_class, snapshot);
1929 if (!audio_init_audiodevs()) {
1930 exit(1);
1931 }
1932 }
1933
1934
1935 /*
1936 * The remainder of object creation happens after the
1937 * creation of chardev, fsdev, net clients and device data types.
1938 */
1939 static bool object_create_late(const char *type)
1940 {
1941 return !object_create_early(type) && !object_create_pre_sandbox(type);
1942 }
1943
1944 static void qemu_create_late_backends(void)
1945 {
1946 if (qtest_chrdev) {
1947 qtest_server_init(qtest_chrdev, qtest_log, &error_fatal);
1948 }
1949
1950 net_init_clients();
1951
1952 object_option_foreach_add(object_create_late);
1953
1954 if (tpm_init() < 0) {
1955 exit(1);
1956 }
1957
1958 qemu_opts_foreach(qemu_find_opts("mon"),
1959 mon_init_func, NULL, &error_fatal);
1960
1961 if (foreach_device_config(DEV_SERIAL, serial_parse) < 0)
1962 exit(1);
1963 if (foreach_device_config(DEV_PARALLEL, parallel_parse) < 0)
1964 exit(1);
1965 if (foreach_device_config(DEV_DEBUGCON, debugcon_parse) < 0)
1966 exit(1);
1967
1968 /* now chardevs have been created we may have semihosting to connect */
1969 qemu_semihosting_chardev_init();
1970 }
1971
1972 static void qemu_resolve_machine_memdev(void)
1973 {
1974 if (ram_memdev_id) {
1975 Object *backend;
1976 ram_addr_t backend_size;
1977
1978 backend = object_resolve_path_type(ram_memdev_id,
1979 TYPE_MEMORY_BACKEND, NULL);
1980 if (!backend) {
1981 error_report("Memory backend '%s' not found", ram_memdev_id);
1982 exit(EXIT_FAILURE);
1983 }
1984 if (!have_custom_ram_size) {
1985 backend_size = object_property_get_uint(backend, "size", &error_abort);
1986 current_machine->ram_size = backend_size;
1987 }
1988 object_property_set_link(OBJECT(current_machine),
1989 "memory-backend", backend, &error_fatal);
1990 }
1991 }
1992
1993 static void parse_memory_options(void)
1994 {
1995 QemuOpts *opts = qemu_find_opts_singleton("memory");
1996 QDict *dict, *prop;
1997 const char *mem_str;
1998 Location loc;
1999
2000 loc_push_none(&loc);
2001 qemu_opts_loc_restore(opts);
2002
2003 prop = qdict_new();
2004
2005 if (qemu_opt_get_size(opts, "size", 0) != 0) {
2006 /* Fix up legacy suffix-less format */
2007 mem_str = qemu_opt_get(opts, "size");
2008 if (g_ascii_isdigit(mem_str[strlen(mem_str) - 1])) {
2009 g_autofree char *mib_str = g_strdup_printf("%sM", mem_str);
2010 qdict_put_str(prop, "size", mib_str);
2011 } else {
2012 qdict_put_str(prop, "size", mem_str);
2013 }
2014 }
2015
2016 if (qemu_opt_get(opts, "maxmem")) {
2017 qdict_put_str(prop, "max-size", qemu_opt_get(opts, "maxmem"));
2018 }
2019 if (qemu_opt_get(opts, "slots")) {
2020 qdict_put_str(prop, "slots", qemu_opt_get(opts, "slots"));
2021 }
2022
2023 dict = qdict_new();
2024 qdict_put(dict, "memory", prop);
2025 keyval_merge(machine_opts_dict, dict, &error_fatal);
2026 qobject_unref(dict);
2027 loc_pop(&loc);
2028 }
2029
2030 static void qemu_create_machine(QDict *qdict)
2031 {
2032 MachineClass *machine_class = select_machine(qdict, &error_fatal);
2033 object_set_machine_compat_props(machine_class->compat_props);
2034
2035 current_machine = MACHINE(object_new_with_class(OBJECT_CLASS(machine_class)));
2036 object_property_add_child(object_get_root(), "machine",
2037 OBJECT(current_machine));
2038 object_property_add_child(container_get(OBJECT(current_machine),
2039 "/unattached"),
2040 "sysbus", OBJECT(sysbus_get_default()));
2041
2042 if (machine_class->minimum_page_bits) {
2043 if (!set_preferred_target_page_bits(machine_class->minimum_page_bits)) {
2044 /* This would be a board error: specifying a minimum smaller than
2045 * a target's compile-time fixed setting.
2046 */
2047 g_assert_not_reached();
2048 }
2049 }
2050
2051 cpu_exec_init_all();
2052 page_size_init();
2053
2054 if (machine_class->hw_version) {
2055 qemu_set_hw_version(machine_class->hw_version);
2056 }
2057
2058 /*
2059 * Get the default machine options from the machine if it is not already
2060 * specified either by the configuration file or by the command line.
2061 */
2062 if (machine_class->default_machine_opts) {
2063 QDict *default_opts =
2064 keyval_parse(machine_class->default_machine_opts, NULL, NULL,
2065 &error_abort);
2066 qemu_apply_legacy_machine_options(default_opts);
2067 object_set_properties_from_keyval(OBJECT(current_machine), default_opts,
2068 false, &error_abort);
2069 qobject_unref(default_opts);
2070 }
2071 }
2072
2073 static int global_init_func(void *opaque, QemuOpts *opts, Error **errp)
2074 {
2075 GlobalProperty *g;
2076
2077 g = g_malloc0(sizeof(*g));
2078 g->driver = qemu_opt_get(opts, "driver");
2079 g->property = qemu_opt_get(opts, "property");
2080 g->value = qemu_opt_get(opts, "value");
2081 qdev_prop_register_global(g);
2082 return 0;
2083 }
2084
2085 /*
2086 * Return whether configuration group @group is stored in QemuOpts, or
2087 * recorded as one or more QDicts by qemu_record_config_group.
2088 */
2089 static bool is_qemuopts_group(const char *group)
2090 {
2091 if (g_str_equal(group, "object") ||
2092 g_str_equal(group, "machine") ||
2093 g_str_equal(group, "smp-opts") ||
2094 g_str_equal(group, "boot-opts")) {
2095 return false;
2096 }
2097 return true;
2098 }
2099
2100 static void qemu_record_config_group(const char *group, QDict *dict,
2101 bool from_json, Error **errp)
2102 {
2103 if (g_str_equal(group, "object")) {
2104 Visitor *v = qobject_input_visitor_new_keyval(QOBJECT(dict));
2105 object_option_add_visitor(v);
2106 visit_free(v);
2107 } else if (g_str_equal(group, "machine")) {
2108 /*
2109 * Cannot merge string-valued and type-safe dictionaries, so JSON
2110 * is not accepted yet for -M.
2111 */
2112 assert(!from_json);
2113 keyval_merge(machine_opts_dict, dict, errp);
2114 } else if (g_str_equal(group, "smp-opts")) {
2115 machine_merge_property("smp", dict, &error_fatal);
2116 } else if (g_str_equal(group, "boot-opts")) {
2117 machine_merge_property("boot", dict, &error_fatal);
2118 } else {
2119 abort();
2120 }
2121 }
2122
2123 /*
2124 * Parse non-QemuOpts config file groups, pass the rest to
2125 * qemu_config_do_parse.
2126 */
2127 static void qemu_parse_config_group(const char *group, QDict *qdict,
2128 void *opaque, Error **errp)
2129 {
2130 QObject *crumpled;
2131 if (is_qemuopts_group(group)) {
2132 qemu_config_do_parse(group, qdict, opaque, errp);
2133 return;
2134 }
2135
2136 crumpled = qdict_crumple(qdict, errp);
2137 if (!crumpled) {
2138 return;
2139 }
2140 switch (qobject_type(crumpled)) {
2141 case QTYPE_QDICT:
2142 qemu_record_config_group(group, qobject_to(QDict, crumpled), false, errp);
2143 break;
2144 case QTYPE_QLIST:
2145 error_setg(errp, "Lists cannot be at top level of a configuration section");
2146 break;
2147 default:
2148 g_assert_not_reached();
2149 }
2150 qobject_unref(crumpled);
2151 }
2152
2153 static void qemu_read_default_config_file(Error **errp)
2154 {
2155 ERRP_GUARD();
2156 int ret;
2157 g_autofree char *file = get_relocated_path(CONFIG_QEMU_CONFDIR "/qemu.conf");
2158
2159 ret = qemu_read_config_file(file, qemu_parse_config_group, errp);
2160 if (ret < 0) {
2161 if (ret == -ENOENT) {
2162 error_free(*errp);
2163 *errp = NULL;
2164 }
2165 }
2166 }
2167
2168 static void qemu_set_option(const char *str, Error **errp)
2169 {
2170 char group[64], id[64], arg[64];
2171 QemuOptsList *list;
2172 QemuOpts *opts;
2173 int rc, offset;
2174
2175 rc = sscanf(str, "%63[^.].%63[^.].%63[^=]%n", group, id, arg, &offset);
2176 if (rc < 3 || str[offset] != '=') {
2177 error_setg(errp, "can't parse: \"%s\"", str);
2178 return;
2179 }
2180
2181 if (!is_qemuopts_group(group)) {
2182 error_setg(errp, "-set is not supported with %s", group);
2183 } else {
2184 list = qemu_find_opts_err(group, errp);
2185 if (list) {
2186 opts = qemu_opts_find(list, id);
2187 if (!opts) {
2188 error_setg(errp, "there is no %s \"%s\" defined", group, id);
2189 return;
2190 }
2191 qemu_opt_set(opts, arg, str + offset + 1, errp);
2192 }
2193 }
2194 }
2195
2196 static void user_register_global_props(void)
2197 {
2198 qemu_opts_foreach(qemu_find_opts("global"),
2199 global_init_func, NULL, NULL);
2200 }
2201
2202 static int do_configure_icount(void *opaque, QemuOpts *opts, Error **errp)
2203 {
2204 icount_configure(opts, errp);
2205 return 0;
2206 }
2207
2208 static int accelerator_set_property(void *opaque,
2209 const char *name, const char *value,
2210 Error **errp)
2211 {
2212 return object_parse_property_opt(opaque, name, value, "accel", errp);
2213 }
2214
2215 static int do_configure_accelerator(void *opaque, QemuOpts *opts, Error **errp)
2216 {
2217 bool *p_init_failed = opaque;
2218 const char *acc = qemu_opt_get(opts, "accel");
2219 AccelClass *ac = accel_find(acc);
2220 AccelState *accel;
2221 int ret;
2222 bool qtest_with_kvm;
2223
2224 if (!acc) {
2225 error_setg(errp, QERR_MISSING_PARAMETER, "accel");
2226 goto bad;
2227 }
2228
2229 qtest_with_kvm = g_str_equal(acc, "kvm") && qtest_chrdev != NULL;
2230
2231 if (!ac) {
2232 if (!qtest_with_kvm) {
2233 error_report("invalid accelerator %s", acc);
2234 }
2235 goto bad;
2236 }
2237 accel = ACCEL(object_new_with_class(OBJECT_CLASS(ac)));
2238 object_apply_compat_props(OBJECT(accel));
2239 qemu_opt_foreach(opts, accelerator_set_property,
2240 accel,
2241 &error_fatal);
2242 /*
2243 * If legacy -singlestep option is set, honour it for TCG and
2244 * silently ignore for any other accelerator (which is how this
2245 * option has always behaved).
2246 */
2247 if (opt_one_insn_per_tb) {
2248 /*
2249 * This will always succeed for TCG, and we want to ignore
2250 * the error from trying to set a nonexistent property
2251 * on any other accelerator.
2252 */
2253 object_property_set_bool(OBJECT(accel), "one-insn-per-tb", true, NULL);
2254 }
2255 ret = accel_init_machine(accel, current_machine);
2256 if (ret < 0) {
2257 if (!qtest_with_kvm || ret != -ENOENT) {
2258 error_report("failed to initialize %s: %s", acc, strerror(-ret));
2259 }
2260 goto bad;
2261 }
2262
2263 return 1;
2264
2265 bad:
2266 *p_init_failed = true;
2267 return 0;
2268 }
2269
2270 static void configure_accelerators(const char *progname)
2271 {
2272 bool init_failed = false;
2273
2274 qemu_opts_foreach(qemu_find_opts("icount"),
2275 do_configure_icount, NULL, &error_fatal);
2276
2277 if (QTAILQ_EMPTY(&qemu_accel_opts.head)) {
2278 char **accel_list, **tmp;
2279
2280 if (accelerators == NULL) {
2281 /* Select the default accelerator */
2282 bool have_tcg = accel_find("tcg");
2283 bool have_kvm = accel_find("kvm");
2284
2285 if (have_tcg && have_kvm) {
2286 if (g_str_has_suffix(progname, "kvm")) {
2287 /* If the program name ends with "kvm", we prefer KVM */
2288 accelerators = "kvm:tcg";
2289 } else {
2290 accelerators = "tcg:kvm";
2291 }
2292 } else if (have_kvm) {
2293 accelerators = "kvm";
2294 } else if (have_tcg) {
2295 accelerators = "tcg";
2296 } else {
2297 error_report("No accelerator selected and"
2298 " no default accelerator available");
2299 exit(1);
2300 }
2301 }
2302 accel_list = g_strsplit(accelerators, ":", 0);
2303
2304 for (tmp = accel_list; *tmp; tmp++) {
2305 /*
2306 * Filter invalid accelerators here, to prevent obscenities
2307 * such as "-machine accel=tcg,,thread=single".
2308 */
2309 if (accel_find(*tmp)) {
2310 qemu_opts_parse_noisily(qemu_find_opts("accel"), *tmp, true);
2311 } else {
2312 init_failed = true;
2313 error_report("invalid accelerator %s", *tmp);
2314 }
2315 }
2316 g_strfreev(accel_list);
2317 } else {
2318 if (accelerators != NULL) {
2319 error_report("The -accel and \"-machine accel=\" options are incompatible");
2320 exit(1);
2321 }
2322 }
2323
2324 if (!qemu_opts_foreach(qemu_find_opts("accel"),
2325 do_configure_accelerator, &init_failed, &error_fatal)) {
2326 if (!init_failed) {
2327 error_report("no accelerator found");
2328 }
2329 exit(1);
2330 }
2331
2332 if (init_failed && !qtest_chrdev) {
2333 error_report("falling back to %s", current_accel_name());
2334 }
2335
2336 if (icount_enabled() && !tcg_enabled()) {
2337 error_report("-icount is not allowed with hardware virtualization");
2338 exit(1);
2339 }
2340 }
2341
2342 static void qemu_validate_options(const QDict *machine_opts)
2343 {
2344 const char *kernel_filename = qdict_get_try_str(machine_opts, "kernel");
2345 const char *initrd_filename = qdict_get_try_str(machine_opts, "initrd");
2346 const char *kernel_cmdline = qdict_get_try_str(machine_opts, "append");
2347
2348 if (kernel_filename == NULL) {
2349 if (kernel_cmdline != NULL) {
2350 error_report("-append only allowed with -kernel option");
2351 exit(1);
2352 }
2353
2354 if (initrd_filename != NULL) {
2355 error_report("-initrd only allowed with -kernel option");
2356 exit(1);
2357 }
2358 }
2359
2360 if (loadvm && preconfig_requested) {
2361 error_report("'preconfig' and 'loadvm' options are "
2362 "mutually exclusive");
2363 exit(EXIT_FAILURE);
2364 }
2365 if (incoming && preconfig_requested && strcmp(incoming, "defer") != 0) {
2366 error_report("'preconfig' supports '-incoming defer' only");
2367 exit(EXIT_FAILURE);
2368 }
2369
2370 #ifdef CONFIG_CURSES
2371 if (is_daemonized() && dpy.type == DISPLAY_TYPE_CURSES) {
2372 error_report("curses display cannot be used with -daemonize");
2373 exit(1);
2374 }
2375 #endif
2376 }
2377
2378 static void qemu_process_sugar_options(void)
2379 {
2380 if (mem_prealloc) {
2381 QObject *smp = qdict_get(machine_opts_dict, "smp");
2382 if (smp && qobject_type(smp) == QTYPE_QDICT) {
2383 QObject *cpus = qdict_get(qobject_to(QDict, smp), "cpus");
2384 if (cpus && qobject_type(cpus) == QTYPE_QSTRING) {
2385 const char *val = qstring_get_str(qobject_to(QString, cpus));
2386 object_register_sugar_prop("memory-backend", "prealloc-threads",
2387 val, false);
2388 }
2389 }
2390 object_register_sugar_prop("memory-backend", "prealloc", "on", false);
2391 }
2392 }
2393
2394 /* -action processing */
2395
2396 /*
2397 * Process all the -action parameters parsed from cmdline.
2398 */
2399 static int process_runstate_actions(void *opaque, QemuOpts *opts, Error **errp)
2400 {
2401 Error *local_err = NULL;
2402 QDict *qdict = qemu_opts_to_qdict(opts, NULL);
2403 QObject *ret = NULL;
2404 qmp_marshal_set_action(qdict, &ret, &local_err);
2405 qobject_unref(ret);
2406 qobject_unref(qdict);
2407 if (local_err) {
2408 error_propagate(errp, local_err);
2409 return 1;
2410 }
2411 return 0;
2412 }
2413
2414 static void qemu_process_early_options(void)
2415 {
2416 qemu_opts_foreach(qemu_find_opts("name"),
2417 parse_name, NULL, &error_fatal);
2418
2419 object_option_foreach_add(object_create_pre_sandbox);
2420
2421 #ifdef CONFIG_SECCOMP
2422 QemuOptsList *olist = qemu_find_opts_err("sandbox", NULL);
2423 if (olist) {
2424 qemu_opts_foreach(olist, parse_sandbox, NULL, &error_fatal);
2425 }
2426 #endif
2427
2428 if (qemu_opts_foreach(qemu_find_opts("action"),
2429 process_runstate_actions, NULL, &error_fatal)) {
2430 exit(1);
2431 }
2432
2433 #ifndef _WIN32
2434 qemu_opts_foreach(qemu_find_opts("add-fd"),
2435 parse_add_fd, NULL, &error_fatal);
2436
2437 qemu_opts_foreach(qemu_find_opts("add-fd"),
2438 cleanup_add_fd, NULL, &error_fatal);
2439 #endif
2440
2441 /* Open the logfile at this point and set the log mask if necessary. */
2442 {
2443 int mask = 0;
2444 if (log_mask) {
2445 mask = qemu_str_to_log_mask(log_mask);
2446 if (!mask) {
2447 qemu_print_log_usage(stdout);
2448 exit(1);
2449 }
2450 }
2451 qemu_set_log_filename_flags(log_file, mask, &error_fatal);
2452 }
2453
2454 qemu_add_default_firmwarepath();
2455 }
2456
2457 static void qemu_process_help_options(void)
2458 {
2459 /*
2460 * Check for -cpu help and -device help before we call select_machine(),
2461 * which will return an error if the architecture has no default machine
2462 * type and the user did not specify one, so that the user doesn't need
2463 * to say '-cpu help -machine something'.
2464 */
2465 if (cpu_option && is_help_option(cpu_option)) {
2466 list_cpus();
2467 exit(0);
2468 }
2469
2470 if (qemu_opts_foreach(qemu_find_opts("device"),
2471 device_help_func, NULL, NULL)) {
2472 exit(0);
2473 }
2474
2475 /* -L help lists the data directories and exits. */
2476 if (list_data_dirs) {
2477 qemu_list_data_dirs();
2478 exit(0);
2479 }
2480 }
2481
2482 static void qemu_maybe_daemonize(const char *pid_file)
2483 {
2484 Error *err = NULL;
2485
2486 os_daemonize();
2487 rcu_disable_atfork();
2488
2489 if (pid_file) {
2490 char *pid_file_realpath = NULL;
2491
2492 if (!qemu_write_pidfile(pid_file, &err)) {
2493 error_reportf_err(err, "cannot create PID file: ");
2494 exit(1);
2495 }
2496
2497 pid_file_realpath = g_malloc0(PATH_MAX);
2498 if (!realpath(pid_file, pid_file_realpath)) {
2499 if (errno != ENOENT) {
2500 warn_report("not removing PID file on exit: cannot resolve PID "
2501 "file path: %s: %s", pid_file, strerror(errno));
2502 }
2503 return;
2504 }
2505
2506 qemu_unlink_pidfile_notifier = (struct UnlinkPidfileNotifier) {
2507 .notifier = {
2508 .notify = qemu_unlink_pidfile,
2509 },
2510 .pid_file_realpath = pid_file_realpath,
2511 };
2512 qemu_add_exit_notifier(&qemu_unlink_pidfile_notifier.notifier);
2513 }
2514 }
2515
2516 static void qemu_init_displays(void)
2517 {
2518 DisplayState *ds;
2519
2520 /* init local displays */
2521 ds = init_displaystate();
2522 qemu_display_init(ds, &dpy);
2523
2524 /* must be after terminal init, SDL library changes signal handlers */
2525 os_setup_signal_handling();
2526
2527 /* init remote displays */
2528 #ifdef CONFIG_VNC
2529 qemu_opts_foreach(qemu_find_opts("vnc"),
2530 vnc_init_func, NULL, &error_fatal);
2531 #endif
2532
2533 if (using_spice) {
2534 qemu_spice.display_init();
2535 }
2536 }
2537
2538 static void qemu_init_board(void)
2539 {
2540 /* process plugin before CPUs are created, but once -smp has been parsed */
2541 qemu_plugin_load_list(&plugin_list, &error_fatal);
2542
2543 /* From here on we enter MACHINE_PHASE_INITIALIZED. */
2544 machine_run_board_init(current_machine, mem_path, &error_fatal);
2545
2546 drive_check_orphaned();
2547
2548 realtime_init();
2549
2550 if (hax_enabled()) {
2551 /* FIXME: why isn't cpu_synchronize_all_post_init enough? */
2552 hax_sync_vcpus();
2553 }
2554 }
2555
2556 static void qemu_create_cli_devices(void)
2557 {
2558 DeviceOption *opt;
2559
2560 soundhw_init();
2561
2562 qemu_opts_foreach(qemu_find_opts("fw_cfg"),
2563 parse_fw_cfg, fw_cfg_find(), &error_fatal);
2564
2565 /* init USB devices */
2566 if (machine_usb(current_machine)) {
2567 if (foreach_device_config(DEV_USB, usb_parse) < 0)
2568 exit(1);
2569 }
2570
2571 /* init generic devices */
2572 rom_set_order_override(FW_CFG_ORDER_OVERRIDE_DEVICE);
2573 qemu_opts_foreach(qemu_find_opts("device"),
2574 device_init_func, NULL, &error_fatal);
2575 QTAILQ_FOREACH(opt, &device_opts, next) {
2576 DeviceState *dev;
2577 loc_push_restore(&opt->loc);
2578 /*
2579 * TODO Eventually we should call qmp_device_add() here to make sure it
2580 * behaves the same, but QMP still has to accept incorrectly typed
2581 * options until libvirt is fixed and we want to be strict on the CLI
2582 * from the start, so call qdev_device_add_from_qdict() directly for
2583 * now.
2584 */
2585 dev = qdev_device_add_from_qdict(opt->opts, true, &error_fatal);
2586 object_unref(OBJECT(dev));
2587 loc_pop(&opt->loc);
2588 }
2589 rom_reset_order_override();
2590 }
2591
2592 static void qemu_machine_creation_done(void)
2593 {
2594 MachineState *machine = MACHINE(qdev_get_machine());
2595
2596 /* Did we create any drives that we failed to create a device for? */
2597 drive_check_orphaned();
2598
2599 /* Don't warn about the default network setup that you get if
2600 * no command line -net or -netdev options are specified. There
2601 * are two cases that we would otherwise complain about:
2602 * (1) board doesn't support a NIC but the implicit "-net nic"
2603 * requested one
2604 * (2) CONFIG_SLIRP not set, in which case the implicit "-net nic"
2605 * sets up a nic that isn't connected to anything.
2606 */
2607 if (!default_net && (!qtest_enabled() || has_defaults)) {
2608 net_check_clients();
2609 }
2610
2611 qdev_prop_check_globals();
2612
2613 qdev_machine_creation_done();
2614
2615 if (machine->cgs) {
2616 /*
2617 * Verify that Confidential Guest Support has actually been initialized
2618 */
2619 assert(machine->cgs->ready);
2620 }
2621
2622 if (foreach_device_config(DEV_GDB, gdbserver_start) < 0) {
2623 exit(1);
2624 }
2625 if (!vga_interface_created && !default_vga &&
2626 vga_interface_type != VGA_NONE) {
2627 warn_report("A -vga option was passed but this machine "
2628 "type does not use that option; "
2629 "No VGA device has been created");
2630 }
2631 }
2632
2633 void qmp_x_exit_preconfig(Error **errp)
2634 {
2635 if (phase_check(PHASE_MACHINE_INITIALIZED)) {
2636 error_setg(errp, "The command is permitted only before machine initialization");
2637 return;
2638 }
2639
2640 qemu_init_board();
2641 qemu_create_cli_devices();
2642 qemu_machine_creation_done();
2643
2644 if (loadvm) {
2645 load_snapshot(loadvm, NULL, false, NULL, &error_fatal);
2646 }
2647 if (replay_mode != REPLAY_MODE_NONE) {
2648 replay_vmstate_init();
2649 }
2650
2651 if (incoming) {
2652 Error *local_err = NULL;
2653 if (strcmp(incoming, "defer") != 0) {
2654 qmp_migrate_incoming(incoming, &local_err);
2655 if (local_err) {
2656 error_reportf_err(local_err, "-incoming %s: ", incoming);
2657 exit(1);
2658 }
2659 }
2660 } else if (autostart) {
2661 qmp_cont(NULL);
2662 }
2663 }
2664
2665 void qemu_init(int argc, char **argv)
2666 {
2667 QemuOpts *opts;
2668 QemuOpts *icount_opts = NULL, *accel_opts = NULL;
2669 QemuOptsList *olist;
2670 int optind;
2671 const char *optarg;
2672 MachineClass *machine_class;
2673 bool userconfig = true;
2674 FILE *vmstate_dump_file = NULL;
2675
2676 qemu_add_opts(&qemu_drive_opts);
2677 qemu_add_drive_opts(&qemu_legacy_drive_opts);
2678 qemu_add_drive_opts(&qemu_common_drive_opts);
2679 qemu_add_drive_opts(&qemu_drive_opts);
2680 qemu_add_drive_opts(&bdrv_runtime_opts);
2681 qemu_add_opts(&qemu_chardev_opts);
2682 qemu_add_opts(&qemu_device_opts);
2683 qemu_add_opts(&qemu_netdev_opts);
2684 qemu_add_opts(&qemu_nic_opts);
2685 qemu_add_opts(&qemu_net_opts);
2686 qemu_add_opts(&qemu_rtc_opts);
2687 qemu_add_opts(&qemu_global_opts);
2688 qemu_add_opts(&qemu_mon_opts);
2689 qemu_add_opts(&qemu_trace_opts);
2690 qemu_plugin_add_opts();
2691 qemu_add_opts(&qemu_option_rom_opts);
2692 qemu_add_opts(&qemu_accel_opts);
2693 qemu_add_opts(&qemu_mem_opts);
2694 qemu_add_opts(&qemu_smp_opts);
2695 qemu_add_opts(&qemu_boot_opts);
2696 qemu_add_opts(&qemu_add_fd_opts);
2697 qemu_add_opts(&qemu_object_opts);
2698 qemu_add_opts(&qemu_tpmdev_opts);
2699 qemu_add_opts(&qemu_overcommit_opts);
2700 qemu_add_opts(&qemu_msg_opts);
2701 qemu_add_opts(&qemu_name_opts);
2702 qemu_add_opts(&qemu_numa_opts);
2703 qemu_add_opts(&qemu_icount_opts);
2704 qemu_add_opts(&qemu_semihosting_config_opts);
2705 qemu_add_opts(&qemu_fw_cfg_opts);
2706 qemu_add_opts(&qemu_action_opts);
2707 module_call_init(MODULE_INIT_OPTS);
2708
2709 error_init(argv[0]);
2710 qemu_init_exec_dir(argv[0]);
2711
2712 qemu_init_arch_modules();
2713
2714 qemu_init_subsystems();
2715
2716 /* first pass of option parsing */
2717 optind = 1;
2718 while (optind < argc) {
2719 if (argv[optind][0] != '-') {
2720 /* disk image */
2721 optind++;
2722 } else {
2723 const QEMUOption *popt;
2724
2725 popt = lookup_opt(argc, argv, &optarg, &optind);
2726 switch (popt->index) {
2727 case QEMU_OPTION_nouserconfig:
2728 userconfig = false;
2729 break;
2730 }
2731 }
2732 }
2733
2734 machine_opts_dict = qdict_new();
2735 if (userconfig) {
2736 qemu_read_default_config_file(&error_fatal);
2737 }
2738
2739 /* second pass of option parsing */
2740 optind = 1;
2741 for(;;) {
2742 if (optind >= argc)
2743 break;
2744 if (argv[optind][0] != '-') {
2745 loc_set_cmdline(argv, optind, 1);
2746 drive_add(IF_DEFAULT, 0, argv[optind++], HD_OPTS);
2747 } else {
2748 const QEMUOption *popt;
2749
2750 popt = lookup_opt(argc, argv, &optarg, &optind);
2751 if (!(popt->arch_mask & arch_type)) {
2752 error_report("Option not supported for this target");
2753 exit(1);
2754 }
2755 switch(popt->index) {
2756 case QEMU_OPTION_cpu:
2757 /* hw initialization will check this */
2758 cpu_option = optarg;
2759 break;
2760 case QEMU_OPTION_hda:
2761 case QEMU_OPTION_hdb:
2762 case QEMU_OPTION_hdc:
2763 case QEMU_OPTION_hdd:
2764 drive_add(IF_DEFAULT, popt->index - QEMU_OPTION_hda, optarg,
2765 HD_OPTS);
2766 break;
2767 case QEMU_OPTION_blockdev:
2768 {
2769 Visitor *v;
2770 BlockdevOptionsQueueEntry *bdo;
2771
2772 v = qobject_input_visitor_new_str(optarg, "driver",
2773 &error_fatal);
2774
2775 bdo = g_new(BlockdevOptionsQueueEntry, 1);
2776 visit_type_BlockdevOptions(v, NULL, &bdo->bdo,
2777 &error_fatal);
2778 visit_free(v);
2779 loc_save(&bdo->loc);
2780 QSIMPLEQ_INSERT_TAIL(&bdo_queue, bdo, entry);
2781 break;
2782 }
2783 case QEMU_OPTION_drive:
2784 opts = qemu_opts_parse_noisily(qemu_find_opts("drive"),
2785 optarg, false);
2786 if (opts == NULL) {
2787 exit(1);
2788 }
2789 break;
2790 case QEMU_OPTION_set:
2791 qemu_set_option(optarg, &error_fatal);
2792 break;
2793 case QEMU_OPTION_global:
2794 if (qemu_global_option(optarg) != 0)
2795 exit(1);
2796 break;
2797 case QEMU_OPTION_mtdblock:
2798 drive_add(IF_MTD, -1, optarg, MTD_OPTS);
2799 break;
2800 case QEMU_OPTION_sd:
2801 drive_add(IF_SD, -1, optarg, SD_OPTS);
2802 break;
2803 case QEMU_OPTION_pflash:
2804 drive_add(IF_PFLASH, -1, optarg, PFLASH_OPTS);
2805 break;
2806 case QEMU_OPTION_snapshot:
2807 snapshot = 1;
2808 replay_add_blocker("-snapshot");
2809 break;
2810 case QEMU_OPTION_numa:
2811 opts = qemu_opts_parse_noisily(qemu_find_opts("numa"),
2812 optarg, true);
2813 if (!opts) {
2814 exit(1);
2815 }
2816 break;
2817 case QEMU_OPTION_display:
2818 parse_display(optarg);
2819 break;
2820 case QEMU_OPTION_nographic:
2821 qdict_put_str(machine_opts_dict, "graphics", "off");
2822 nographic = true;
2823 dpy.type = DISPLAY_TYPE_NONE;
2824 break;
2825 case QEMU_OPTION_portrait:
2826 graphic_rotate = 90;
2827 break;
2828 case QEMU_OPTION_rotate:
2829 graphic_rotate = strtol(optarg, (char **) &optarg, 10);
2830 if (graphic_rotate != 0 && graphic_rotate != 90 &&
2831 graphic_rotate != 180 && graphic_rotate != 270) {
2832 error_report("only 90, 180, 270 deg rotation is available");
2833 exit(1);
2834 }
2835 break;
2836 case QEMU_OPTION_kernel:
2837 qdict_put_str(machine_opts_dict, "kernel", optarg);
2838 break;
2839 case QEMU_OPTION_initrd:
2840 qdict_put_str(machine_opts_dict, "initrd", optarg);
2841 break;
2842 case QEMU_OPTION_append:
2843 qdict_put_str(machine_opts_dict, "append", optarg);
2844 break;
2845 case QEMU_OPTION_dtb:
2846 qdict_put_str(machine_opts_dict, "dtb", optarg);
2847 break;
2848 case QEMU_OPTION_cdrom:
2849 drive_add(IF_DEFAULT, 2, optarg, CDROM_OPTS);
2850 break;
2851 case QEMU_OPTION_boot:
2852 machine_parse_property_opt(qemu_find_opts("boot-opts"), "boot", optarg);
2853 break;
2854 case QEMU_OPTION_fda:
2855 case QEMU_OPTION_fdb:
2856 drive_add(IF_FLOPPY, popt->index - QEMU_OPTION_fda,
2857 optarg, FD_OPTS);
2858 break;
2859 case QEMU_OPTION_no_fd_bootchk:
2860 fd_bootchk = 0;
2861 break;
2862 case QEMU_OPTION_netdev:
2863 default_net = 0;
2864 if (netdev_is_modern(optarg)) {
2865 netdev_parse_modern(optarg);
2866 } else {
2867 net_client_parse(qemu_find_opts("netdev"), optarg);
2868 }
2869 break;
2870 case QEMU_OPTION_nic:
2871 default_net = 0;
2872 net_client_parse(qemu_find_opts("nic"), optarg);
2873 break;
2874 case QEMU_OPTION_net:
2875 default_net = 0;
2876 net_client_parse(qemu_find_opts("net"), optarg);
2877 break;
2878 #ifdef CONFIG_LIBISCSI
2879 case QEMU_OPTION_iscsi:
2880 opts = qemu_opts_parse_noisily(qemu_find_opts("iscsi"),
2881 optarg, false);
2882 if (!opts) {
2883 exit(1);
2884 }
2885 break;
2886 #endif
2887 case QEMU_OPTION_audio_help:
2888 audio_legacy_help();
2889 exit (0);
2890 break;
2891 case QEMU_OPTION_audiodev:
2892 audio_parse_option(optarg);
2893 break;
2894 case QEMU_OPTION_audio: {
2895 bool help;
2896 char *model;
2897 Audiodev *dev = NULL;
2898 Visitor *v;
2899 QDict *dict = keyval_parse(optarg, "driver", &help, &error_fatal);
2900 if (help || (qdict_haskey(dict, "driver") &&
2901 is_help_option(qdict_get_str(dict, "driver")))) {
2902 audio_help();
2903 exit(EXIT_SUCCESS);
2904 }
2905 if (!qdict_haskey(dict, "id")) {
2906 qdict_put_str(dict, "id", "audiodev0");
2907 }
2908 if (!qdict_haskey(dict, "model")) {
2909 error_setg(&error_fatal, "Parameter 'model' is missing");
2910 }
2911 model = g_strdup(qdict_get_str(dict, "model"));
2912 qdict_del(dict, "model");
2913 if (is_help_option(model)) {
2914 show_valid_soundhw();
2915 exit(0);
2916 }
2917 v = qobject_input_visitor_new_keyval(QOBJECT(dict));
2918 qobject_unref(dict);
2919 visit_type_Audiodev(v, NULL, &dev, &error_fatal);
2920 visit_free(v);
2921 audio_define(dev);
2922 select_soundhw(model, dev->id);
2923 g_free(model);
2924 break;
2925 }
2926 case QEMU_OPTION_h:
2927 help(0);
2928 break;
2929 case QEMU_OPTION_version:
2930 version();
2931 exit(0);
2932 break;
2933 case QEMU_OPTION_m:
2934 opts = qemu_opts_parse_noisily(qemu_find_opts("memory"), optarg, true);
2935 if (opts == NULL) {
2936 exit(1);
2937 }
2938 break;
2939 #ifdef CONFIG_TPM
2940 case QEMU_OPTION_tpmdev:
2941 if (tpm_config_parse(qemu_find_opts("tpmdev"), optarg) < 0) {
2942 exit(1);
2943 }
2944 break;
2945 #endif
2946 case QEMU_OPTION_mempath:
2947 mem_path = optarg;
2948 break;
2949 case QEMU_OPTION_mem_prealloc:
2950 mem_prealloc = 1;
2951 break;
2952 case QEMU_OPTION_d:
2953 log_mask = optarg;
2954 break;
2955 case QEMU_OPTION_D:
2956 log_file = optarg;
2957 break;
2958 case QEMU_OPTION_DFILTER:
2959 qemu_set_dfilter_ranges(optarg, &error_fatal);
2960 break;
2961 #if defined(CONFIG_TCG) && defined(CONFIG_LINUX)
2962 case QEMU_OPTION_perfmap:
2963 perf_enable_perfmap();
2964 break;
2965 case QEMU_OPTION_jitdump:
2966 perf_enable_jitdump();
2967 break;
2968 #endif
2969 case QEMU_OPTION_seed:
2970 qemu_guest_random_seed_main(optarg, &error_fatal);
2971 break;
2972 case QEMU_OPTION_s:
2973 add_device_config(DEV_GDB, "tcp::" DEFAULT_GDBSTUB_PORT);
2974 break;
2975 case QEMU_OPTION_gdb:
2976 add_device_config(DEV_GDB, optarg);
2977 break;
2978 case QEMU_OPTION_L:
2979 if (is_help_option(optarg)) {
2980 list_data_dirs = true;
2981 } else {
2982 qemu_add_data_dir(g_strdup(optarg));
2983 }
2984 break;
2985 case QEMU_OPTION_bios:
2986 qdict_put_str(machine_opts_dict, "firmware", optarg);
2987 break;
2988 case QEMU_OPTION_singlestep:
2989 opt_one_insn_per_tb = true;
2990 break;
2991 case QEMU_OPTION_S:
2992 autostart = 0;
2993 break;
2994 case QEMU_OPTION_k:
2995 keyboard_layout = optarg;
2996 break;
2997 case QEMU_OPTION_vga:
2998 vga_model = optarg;
2999 default_vga = 0;
3000 break;
3001 case QEMU_OPTION_g:
3002 {
3003 const char *p;
3004 int w, h, depth;
3005 p = optarg;
3006 w = strtol(p, (char **)&p, 10);
3007 if (w <= 0) {
3008 graphic_error:
3009 error_report("invalid resolution or depth");
3010 exit(1);
3011 }
3012 if (*p != 'x')
3013 goto graphic_error;
3014 p++;
3015 h = strtol(p, (char **)&p, 10);
3016 if (h <= 0)
3017 goto graphic_error;
3018 if (*p == 'x') {
3019 p++;
3020 depth = strtol(p, (char **)&p, 10);
3021 if (depth != 1 && depth != 2 && depth != 4 &&
3022 depth != 8 && depth != 15 && depth != 16 &&
3023 depth != 24 && depth != 32)
3024 goto graphic_error;
3025 } else if (*p == '\0') {
3026 depth = graphic_depth;
3027 } else {
3028 goto graphic_error;
3029 }
3030
3031 graphic_width = w;
3032 graphic_height = h;
3033 graphic_depth = depth;
3034 }
3035 break;
3036 case QEMU_OPTION_echr:
3037 {
3038 char *r;
3039 term_escape_char = strtol(optarg, &r, 0);
3040 if (r == optarg)
3041 printf("Bad argument to echr\n");
3042 break;
3043 }
3044 case QEMU_OPTION_monitor:
3045 default_monitor = 0;
3046 if (strncmp(optarg, "none", 4)) {
3047 monitor_parse(optarg, "readline", false);
3048 }
3049 break;
3050 case QEMU_OPTION_qmp:
3051 monitor_parse(optarg, "control", false);
3052 default_monitor = 0;
3053 break;
3054 case QEMU_OPTION_qmp_pretty:
3055 monitor_parse(optarg, "control", true);
3056 default_monitor = 0;
3057 break;
3058 case QEMU_OPTION_mon:
3059 opts = qemu_opts_parse_noisily(qemu_find_opts("mon"), optarg,
3060 true);
3061 if (!opts) {
3062 exit(1);
3063 }
3064 default_monitor = 0;
3065 break;
3066 case QEMU_OPTION_chardev:
3067 opts = qemu_opts_parse_noisily(qemu_find_opts("chardev"),
3068 optarg, true);
3069 if (!opts) {
3070 exit(1);
3071 }
3072 break;
3073 case QEMU_OPTION_fsdev:
3074 olist = qemu_find_opts("fsdev");
3075 if (!olist) {
3076 error_report("fsdev support is disabled");
3077 exit(1);
3078 }
3079 opts = qemu_opts_parse_noisily(olist, optarg, true);
3080 if (!opts) {
3081 exit(1);
3082 }
3083 break;
3084 case QEMU_OPTION_virtfs: {
3085 QemuOpts *fsdev;
3086 QemuOpts *device;
3087 const char *writeout, *sock_fd, *socket, *path, *security_model,
3088 *multidevs;
3089
3090 olist = qemu_find_opts("virtfs");
3091 if (!olist) {
3092 error_report("virtfs support is disabled");
3093 exit(1);
3094 }
3095 opts = qemu_opts_parse_noisily(olist, optarg, true);
3096 if (!opts) {
3097 exit(1);
3098 }
3099
3100 if (qemu_opt_get(opts, "fsdriver") == NULL ||
3101 qemu_opt_get(opts, "mount_tag") == NULL) {
3102 error_report("Usage: -virtfs fsdriver,mount_tag=tag");
3103 exit(1);
3104 }
3105 fsdev = qemu_opts_create(qemu_find_opts("fsdev"),
3106 qemu_opts_id(opts) ?:
3107 qemu_opt_get(opts, "mount_tag"),
3108 1, NULL);
3109 if (!fsdev) {
3110 error_report("duplicate or invalid fsdev id: %s",
3111 qemu_opt_get(opts, "mount_tag"));
3112 exit(1);
3113 }
3114
3115 writeout = qemu_opt_get(opts, "writeout");
3116 if (writeout) {
3117 #ifdef CONFIG_SYNC_FILE_RANGE
3118 qemu_opt_set(fsdev, "writeout", writeout, &error_abort);
3119 #else
3120 error_report("writeout=immediate not supported "
3121 "on this platform");
3122 exit(1);
3123 #endif
3124 }
3125 qemu_opt_set(fsdev, "fsdriver",
3126 qemu_opt_get(opts, "fsdriver"), &error_abort);
3127 path = qemu_opt_get(opts, "path");
3128 if (path) {
3129 qemu_opt_set(fsdev, "path", path, &error_abort);
3130 }
3131 security_model = qemu_opt_get(opts, "security_model");
3132 if (security_model) {
3133 qemu_opt_set(fsdev, "security_model", security_model,
3134 &error_abort);
3135 }
3136 socket = qemu_opt_get(opts, "socket");
3137 if (socket) {
3138 qemu_opt_set(fsdev, "socket", socket, &error_abort);
3139 }
3140 sock_fd = qemu_opt_get(opts, "sock_fd");
3141 if (sock_fd) {
3142 qemu_opt_set(fsdev, "sock_fd", sock_fd, &error_abort);
3143 }
3144
3145 qemu_opt_set_bool(fsdev, "readonly",
3146 qemu_opt_get_bool(opts, "readonly", 0),
3147 &error_abort);
3148 multidevs = qemu_opt_get(opts, "multidevs");
3149 if (multidevs) {
3150 qemu_opt_set(fsdev, "multidevs", multidevs, &error_abort);
3151 }
3152 device = qemu_opts_create(qemu_find_opts("device"), NULL, 0,
3153 &error_abort);
3154 qemu_opt_set(device, "driver", "virtio-9p-pci", &error_abort);
3155 qemu_opt_set(device, "fsdev",
3156 qemu_opts_id(fsdev), &error_abort);
3157 qemu_opt_set(device, "mount_tag",
3158 qemu_opt_get(opts, "mount_tag"), &error_abort);
3159 break;
3160 }
3161 case QEMU_OPTION_serial:
3162 add_device_config(DEV_SERIAL, optarg);
3163 default_serial = 0;
3164 if (strncmp(optarg, "mon:", 4) == 0) {
3165 default_monitor = 0;
3166 }
3167 break;
3168 case QEMU_OPTION_action:
3169 olist = qemu_find_opts("action");
3170 if (!qemu_opts_parse_noisily(olist, optarg, false)) {
3171 exit(1);
3172 }
3173 break;
3174 case QEMU_OPTION_watchdog_action: {
3175 QemuOpts *opts;
3176 opts = qemu_opts_create(qemu_find_opts("action"), NULL, 0, &error_abort);
3177 qemu_opt_set(opts, "watchdog", optarg, &error_abort);
3178 break;
3179 }
3180 case QEMU_OPTION_parallel:
3181 add_device_config(DEV_PARALLEL, optarg);
3182 default_parallel = 0;
3183 if (strncmp(optarg, "mon:", 4) == 0) {
3184 default_monitor = 0;
3185 }
3186 break;
3187 case QEMU_OPTION_debugcon:
3188 add_device_config(DEV_DEBUGCON, optarg);
3189 break;
3190 case QEMU_OPTION_loadvm:
3191 loadvm = optarg;
3192 break;
3193 case QEMU_OPTION_full_screen:
3194 dpy.has_full_screen = true;
3195 dpy.full_screen = true;
3196 break;
3197 case QEMU_OPTION_pidfile:
3198 pid_file = optarg;
3199 break;
3200 case QEMU_OPTION_win2k_hack:
3201 win2k_install_hack = 1;
3202 break;
3203 case QEMU_OPTION_acpitable:
3204 opts = qemu_opts_parse_noisily(qemu_find_opts("acpi"),
3205 optarg, true);
3206 if (!opts) {
3207 exit(1);
3208 }
3209 acpi_table_add(opts, &error_fatal);
3210 break;
3211 case QEMU_OPTION_smbios:
3212 opts = qemu_opts_parse_noisily(qemu_find_opts("smbios"),
3213 optarg, false);
3214 if (!opts) {
3215 exit(1);
3216 }
3217 smbios_entry_add(opts, &error_fatal);
3218 break;
3219 case QEMU_OPTION_fwcfg:
3220 opts = qemu_opts_parse_noisily(qemu_find_opts("fw_cfg"),
3221 optarg, true);
3222 if (opts == NULL) {
3223 exit(1);
3224 }
3225 break;
3226 case QEMU_OPTION_preconfig:
3227 preconfig_requested = true;
3228 break;
3229 case QEMU_OPTION_enable_kvm:
3230 qdict_put_str(machine_opts_dict, "accel", "kvm");
3231 break;
3232 case QEMU_OPTION_M:
3233 case QEMU_OPTION_machine:
3234 {
3235 bool help;
3236
3237 keyval_parse_into(machine_opts_dict, optarg, "type", &help, &error_fatal);
3238 if (help) {
3239 machine_help_func(machine_opts_dict);
3240 exit(EXIT_SUCCESS);
3241 }
3242 break;
3243 }
3244 case QEMU_OPTION_accel:
3245 accel_opts = qemu_opts_parse_noisily(qemu_find_opts("accel"),
3246 optarg, true);
3247 optarg = qemu_opt_get(accel_opts, "accel");
3248 if (!optarg || is_help_option(optarg)) {
3249 printf("Accelerators supported in QEMU binary:\n");
3250 GSList *el, *accel_list = object_class_get_list(TYPE_ACCEL,
3251 false);
3252 for (el = accel_list; el; el = el->next) {
3253 gchar *typename = g_strdup(object_class_get_name(
3254 OBJECT_CLASS(el->data)));
3255 /* omit qtest which is used for tests only */
3256 if (g_strcmp0(typename, ACCEL_CLASS_NAME("qtest")) &&
3257 g_str_has_suffix(typename, ACCEL_CLASS_SUFFIX)) {
3258 gchar **optname = g_strsplit(typename,
3259 ACCEL_CLASS_SUFFIX, 0);
3260 printf("%s\n", optname[0]);
3261 g_strfreev(optname);
3262 }
3263 g_free(typename);
3264 }
3265 g_slist_free(accel_list);
3266 exit(0);
3267 }
3268 break;
3269 case QEMU_OPTION_usb:
3270 qdict_put_str(machine_opts_dict, "usb", "on");
3271 break;
3272 case QEMU_OPTION_usbdevice:
3273 qdict_put_str(machine_opts_dict, "usb", "on");
3274 add_device_config(DEV_USB, optarg);
3275 break;
3276 case QEMU_OPTION_device:
3277 if (optarg[0] == '{') {
3278 QObject *obj = qobject_from_json(optarg, &error_fatal);
3279 DeviceOption *opt = g_new0(DeviceOption, 1);
3280 opt->opts = qobject_to(QDict, obj);
3281 loc_save(&opt->loc);
3282 assert(opt->opts != NULL);
3283 QTAILQ_INSERT_TAIL(&device_opts, opt, next);
3284 } else {
3285 if (!qemu_opts_parse_noisily(qemu_find_opts("device"),
3286 optarg, true)) {
3287 exit(1);
3288 }
3289 }
3290 break;
3291 case QEMU_OPTION_smp:
3292 machine_parse_property_opt(qemu_find_opts("smp-opts"),
3293 "smp", optarg);
3294 break;
3295 case QEMU_OPTION_vnc:
3296 vnc_parse(optarg);
3297 break;
3298 case QEMU_OPTION_no_acpi:
3299 warn_report("-no-acpi is deprecated, use '-machine acpi=off' instead");
3300 qdict_put_str(machine_opts_dict, "acpi", "off");
3301 break;
3302 case QEMU_OPTION_no_hpet:
3303 warn_report("-no-hpet is deprecated, use '-machine hpet=off' instead");
3304 qdict_put_str(machine_opts_dict, "hpet", "off");
3305 break;
3306 case QEMU_OPTION_no_reboot:
3307 olist = qemu_find_opts("action");
3308 qemu_opts_parse_noisily(olist, "reboot=shutdown", false);
3309 break;
3310 case QEMU_OPTION_no_shutdown:
3311 olist = qemu_find_opts("action");
3312 qemu_opts_parse_noisily(olist, "shutdown=pause", false);
3313 break;
3314 case QEMU_OPTION_uuid:
3315 if (qemu_uuid_parse(optarg, &qemu_uuid) < 0) {
3316 error_report("failed to parse UUID string: wrong format");
3317 exit(1);
3318 }
3319 qemu_uuid_set = true;
3320 break;
3321 case QEMU_OPTION_option_rom:
3322 if (nb_option_roms >= MAX_OPTION_ROMS) {
3323 error_report("too many option ROMs");
3324 exit(1);
3325 }
3326 opts = qemu_opts_parse_noisily(qemu_find_opts("option-rom"),
3327 optarg, true);
3328 if (!opts) {
3329 exit(1);
3330 }
3331 option_rom[nb_option_roms].name = qemu_opt_get(opts, "romfile");
3332 option_rom[nb_option_roms].bootindex =
3333 qemu_opt_get_number(opts, "bootindex", -1);
3334 if (!option_rom[nb_option_roms].name) {
3335 error_report("Option ROM file is not specified");
3336 exit(1);
3337 }
3338 nb_option_roms++;
3339 break;
3340 case QEMU_OPTION_semihosting:
3341 qemu_semihosting_enable();
3342 break;
3343 case QEMU_OPTION_semihosting_config:
3344 if (qemu_semihosting_config_options(optarg) != 0) {
3345 exit(1);
3346 }
3347 break;
3348 case QEMU_OPTION_name:
3349 opts = qemu_opts_parse_noisily(qemu_find_opts("name"),
3350 optarg, true);
3351 if (!opts) {
3352 exit(1);
3353 }
3354 /* Capture guest name if -msg guest-name is used later */
3355 error_guest_name = qemu_opt_get(opts, "guest");
3356 break;
3357 case QEMU_OPTION_prom_env:
3358 if (nb_prom_envs >= MAX_PROM_ENVS) {
3359 error_report("too many prom variables");
3360 exit(1);
3361 }
3362 prom_envs[nb_prom_envs] = optarg;
3363 nb_prom_envs++;
3364 break;
3365 case QEMU_OPTION_old_param:
3366 old_param = 1;
3367 break;
3368 case QEMU_OPTION_rtc:
3369 opts = qemu_opts_parse_noisily(qemu_find_opts("rtc"), optarg,
3370 false);
3371 if (!opts) {
3372 exit(1);
3373 }
3374 break;
3375 case QEMU_OPTION_icount:
3376 icount_opts = qemu_opts_parse_noisily(qemu_find_opts("icount"),
3377 optarg, true);
3378 if (!icount_opts) {
3379 exit(1);
3380 }
3381 break;
3382 case QEMU_OPTION_incoming:
3383 if (!incoming) {
3384 runstate_set(RUN_STATE_INMIGRATE);
3385 }
3386 incoming = optarg;
3387 break;
3388 case QEMU_OPTION_only_migratable:
3389 only_migratable = 1;
3390 break;
3391 case QEMU_OPTION_nodefaults:
3392 has_defaults = 0;
3393 break;
3394 case QEMU_OPTION_xen_domid:
3395 if (!(accel_find("xen")) && !(accel_find("kvm"))) {
3396 error_report("Option not supported for this target");
3397 exit(1);
3398 }
3399 xen_domid = atoi(optarg);
3400 break;
3401 case QEMU_OPTION_xen_attach:
3402 if (!(accel_find("xen"))) {
3403 error_report("Option not supported for this target");
3404 exit(1);
3405 }
3406 xen_mode = XEN_ATTACH;
3407 break;
3408 case QEMU_OPTION_xen_domid_restrict:
3409 if (!(accel_find("xen"))) {
3410 error_report("Option not supported for this target");
3411 exit(1);
3412 }
3413 xen_domid_restrict = true;
3414 break;
3415 case QEMU_OPTION_trace:
3416 trace_opt_parse(optarg);
3417 break;
3418 case QEMU_OPTION_plugin:
3419 qemu_plugin_opt_parse(optarg, &plugin_list);
3420 break;
3421 case QEMU_OPTION_readconfig:
3422 qemu_read_config_file(optarg, qemu_parse_config_group, &error_fatal);
3423 break;
3424 #ifdef CONFIG_SPICE
3425 case QEMU_OPTION_spice:
3426 olist = qemu_find_opts_err("spice", NULL);
3427 if (!olist) {
3428 error_report("spice support is disabled");
3429 exit(1);
3430 }
3431 opts = qemu_opts_parse_noisily(olist, optarg, false);
3432 if (!opts) {
3433 exit(1);
3434 }
3435 display_remote++;
3436 break;
3437 #endif
3438 case QEMU_OPTION_qtest:
3439 qtest_chrdev = optarg;
3440 break;
3441 case QEMU_OPTION_qtest_log:
3442 qtest_log = optarg;
3443 break;
3444 case QEMU_OPTION_sandbox:
3445 olist = qemu_find_opts("sandbox");
3446 if (!olist) {
3447 #ifndef CONFIG_SECCOMP
3448 error_report("-sandbox support is not enabled "
3449 "in this QEMU binary");
3450 #endif
3451 exit(1);
3452 }
3453
3454 opts = qemu_opts_parse_noisily(olist, optarg, true);
3455 if (!opts) {
3456 exit(1);
3457 }
3458 break;
3459 case QEMU_OPTION_add_fd:
3460 #ifndef _WIN32
3461 opts = qemu_opts_parse_noisily(qemu_find_opts("add-fd"),
3462 optarg, false);
3463 if (!opts) {
3464 exit(1);
3465 }
3466 #else
3467 error_report("File descriptor passing is disabled on this "
3468 "platform");
3469 exit(1);
3470 #endif
3471 break;
3472 case QEMU_OPTION_object:
3473 object_option_parse(optarg);
3474 break;
3475 case QEMU_OPTION_overcommit:
3476 opts = qemu_opts_parse_noisily(qemu_find_opts("overcommit"),
3477 optarg, false);
3478 if (!opts) {
3479 exit(1);
3480 }
3481 enable_mlock = qemu_opt_get_bool(opts, "mem-lock", false);
3482 enable_cpu_pm = qemu_opt_get_bool(opts, "cpu-pm", false);
3483 break;
3484 case QEMU_OPTION_compat:
3485 {
3486 CompatPolicy *opts;
3487 Visitor *v;
3488
3489 v = qobject_input_visitor_new_str(optarg, NULL,
3490 &error_fatal);
3491
3492 visit_type_CompatPolicy(v, NULL, &opts, &error_fatal);
3493 QAPI_CLONE_MEMBERS(CompatPolicy, &compat_policy, opts);
3494
3495 qapi_free_CompatPolicy(opts);
3496 visit_free(v);
3497 break;
3498 }
3499 case QEMU_OPTION_msg:
3500 opts = qemu_opts_parse_noisily(qemu_find_opts("msg"), optarg,
3501 false);
3502 if (!opts) {
3503 exit(1);
3504 }
3505 configure_msg(opts);
3506 break;
3507 case QEMU_OPTION_dump_vmstate:
3508 if (vmstate_dump_file) {
3509 error_report("only one '-dump-vmstate' "
3510 "option may be given");
3511 exit(1);
3512 }
3513 vmstate_dump_file = fopen(optarg, "w");
3514 if (vmstate_dump_file == NULL) {
3515 error_report("open %s: %s", optarg, strerror(errno));
3516 exit(1);
3517 }
3518 break;
3519 case QEMU_OPTION_enable_sync_profile:
3520 qsp_enable();
3521 break;
3522 case QEMU_OPTION_nouserconfig:
3523 /* Nothing to be parsed here. Especially, do not error out below. */
3524 break;
3525 default:
3526 if (os_parse_cmd_args(popt->index, optarg)) {
3527 error_report("Option not supported in this build");
3528 exit(1);
3529 }
3530 }
3531 }
3532 }
3533 /*
3534 * Clear error location left behind by the loop.
3535 * Best done right after the loop. Do not insert code here!
3536 */
3537 loc_set_none();
3538
3539 qemu_validate_options(machine_opts_dict);
3540 qemu_process_sugar_options();
3541
3542 /*
3543 * These options affect everything else and should be processed
3544 * before daemonizing.
3545 */
3546 qemu_process_early_options();
3547
3548 qemu_process_help_options();
3549 qemu_maybe_daemonize(pid_file);
3550
3551 /*
3552 * The trace backend must be initialized after daemonizing.
3553 * trace_init_backends() will call st_init(), which will create the
3554 * trace thread in the parent, and also register st_flush_trace_buffer()
3555 * in atexit(). This function will force the parent to wait for the
3556 * writeout thread to finish, which will not occur, and the parent
3557 * process will be left in the host.
3558 */
3559 if (!trace_init_backends()) {
3560 exit(1);
3561 }
3562 trace_init_file();
3563
3564 qemu_init_main_loop(&error_fatal);
3565 cpu_timers_init();
3566
3567 user_register_global_props();
3568 replay_configure(icount_opts);
3569
3570 configure_rtc(qemu_find_opts_singleton("rtc"));
3571
3572 /* Transfer QemuOpts options into machine options */
3573 parse_memory_options();
3574
3575 qemu_create_machine(machine_opts_dict);
3576
3577 suspend_mux_open();
3578
3579 qemu_disable_default_devices();
3580 qemu_create_default_devices();
3581 qemu_create_early_backends();
3582
3583 qemu_apply_legacy_machine_options(machine_opts_dict);
3584 qemu_apply_machine_options(machine_opts_dict);
3585 qobject_unref(machine_opts_dict);
3586 phase_advance(PHASE_MACHINE_CREATED);
3587
3588 /*
3589 * Note: uses machine properties such as kernel-irqchip, must run
3590 * after qemu_apply_machine_options.
3591 */
3592 configure_accelerators(argv[0]);
3593 phase_advance(PHASE_ACCEL_CREATED);
3594
3595 /*
3596 * Beware, QOM objects created before this point miss global and
3597 * compat properties.
3598 *
3599 * Global properties get set up by qdev_prop_register_global(),
3600 * called from user_register_global_props(), and certain option
3601 * desugaring. Also in CPU feature desugaring (buried in
3602 * parse_cpu_option()), which happens below this point, but may
3603 * only target the CPU type, which can only be created after
3604 * parse_cpu_option() returned the type.
3605 *
3606 * Machine compat properties: object_set_machine_compat_props().
3607 * Accelerator compat props: object_set_accelerator_compat_props(),
3608 * called from do_configure_accelerator().
3609 */
3610
3611 machine_class = MACHINE_GET_CLASS(current_machine);
3612 if (!qtest_enabled() && machine_class->deprecation_reason) {
3613 warn_report("Machine type '%s' is deprecated: %s",
3614 machine_class->name, machine_class->deprecation_reason);
3615 }
3616
3617 /*
3618 * Create backends before creating migration objects, so that it can
3619 * check against compatibilities on the backend memories (e.g. postcopy
3620 * over memory-backend-file objects).
3621 */
3622 qemu_create_late_backends();
3623
3624 /*
3625 * Note: creates a QOM object, must run only after global and
3626 * compat properties have been set up.
3627 */
3628 migration_object_init();
3629
3630 /* parse features once if machine provides default cpu_type */
3631 current_machine->cpu_type = machine_class->default_cpu_type;
3632 if (cpu_option) {
3633 current_machine->cpu_type = parse_cpu_option(cpu_option);
3634 }
3635 /* NB: for machine none cpu_type could STILL be NULL here! */
3636
3637 qemu_resolve_machine_memdev();
3638 parse_numa_opts(current_machine);
3639
3640 if (vmstate_dump_file) {
3641 /* dump and exit */
3642 module_load_qom_all();
3643 dump_vmstate_json_to_file(vmstate_dump_file);
3644 exit(0);
3645 }
3646
3647 if (!preconfig_requested) {
3648 qmp_x_exit_preconfig(&error_fatal);
3649 }
3650 qemu_init_displays();
3651 accel_setup_post(current_machine);
3652 os_setup_post();
3653 resume_mux_open();
3654 }
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