Merge remote-tracking branch 'remotes/cohuck-gitlab/tags/s390x-20210121' into staging
[qemu.git] / softmmu / vl.c
1 /*
2 * QEMU System Emulator
3 *
4 * Copyright (c) 2003-2008 Fabrice Bellard
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22 * THE SOFTWARE.
23 */
24
25 #include "qemu/osdep.h"
26 #include "qemu-common.h"
27 #include "qemu/datadir.h"
28 #include "qemu/units.h"
29 #include "exec/cpu-common.h"
30 #include "hw/boards.h"
31 #include "hw/qdev-properties.h"
32 #include "qapi/error.h"
33 #include "qapi/qmp/qdict.h"
34 #include "qemu-version.h"
35 #include "qemu/cutils.h"
36 #include "qemu/help_option.h"
37 #include "qemu/uuid.h"
38 #include "sysemu/reset.h"
39 #include "sysemu/runstate.h"
40 #include "sysemu/runstate-action.h"
41 #include "sysemu/seccomp.h"
42 #include "sysemu/tcg.h"
43 #include "sysemu/xen.h"
44
45 #include "qemu/error-report.h"
46 #include "qemu/sockets.h"
47 #include "sysemu/accel.h"
48 #include "hw/usb.h"
49 #include "hw/isa/isa.h"
50 #include "hw/scsi/scsi.h"
51 #include "hw/display/vga.h"
52 #include "sysemu/watchdog.h"
53 #include "hw/firmware/smbios.h"
54 #include "hw/acpi/acpi.h"
55 #include "hw/xen/xen.h"
56 #include "hw/loader.h"
57 #include "monitor/qdev.h"
58 #include "net/net.h"
59 #include "net/slirp.h"
60 #include "monitor/monitor.h"
61 #include "ui/console.h"
62 #include "ui/input.h"
63 #include "sysemu/sysemu.h"
64 #include "sysemu/numa.h"
65 #include "sysemu/hostmem.h"
66 #include "exec/gdbstub.h"
67 #include "qemu/timer.h"
68 #include "chardev/char.h"
69 #include "qemu/bitmap.h"
70 #include "qemu/log.h"
71 #include "sysemu/blockdev.h"
72 #include "hw/block/block.h"
73 #include "hw/i386/x86.h"
74 #include "hw/i386/pc.h"
75 #include "migration/misc.h"
76 #include "migration/snapshot.h"
77 #include "sysemu/tpm.h"
78 #include "sysemu/dma.h"
79 #include "hw/audio/soundhw.h"
80 #include "audio/audio.h"
81 #include "sysemu/cpus.h"
82 #include "sysemu/cpu-timers.h"
83 #include "migration/colo.h"
84 #include "migration/postcopy-ram.h"
85 #include "sysemu/kvm.h"
86 #include "sysemu/hax.h"
87 #include "qapi/qobject-input-visitor.h"
88 #include "qemu/option.h"
89 #include "qemu/config-file.h"
90 #include "qemu-options.h"
91 #include "qemu/main-loop.h"
92 #ifdef CONFIG_VIRTFS
93 #include "fsdev/qemu-fsdev.h"
94 #endif
95 #include "sysemu/qtest.h"
96
97 #include "disas/disas.h"
98
99 #include "trace.h"
100 #include "trace/control.h"
101 #include "qemu/plugin.h"
102 #include "qemu/queue.h"
103 #include "sysemu/arch_init.h"
104
105 #include "ui/qemu-spice.h"
106 #include "qapi/string-input-visitor.h"
107 #include "qapi/opts-visitor.h"
108 #include "qapi/clone-visitor.h"
109 #include "qom/object_interfaces.h"
110 #include "hw/semihosting/semihost.h"
111 #include "crypto/init.h"
112 #include "sysemu/replay.h"
113 #include "qapi/qapi-events-run-state.h"
114 #include "qapi/qapi-visit-block-core.h"
115 #include "qapi/qapi-visit-ui.h"
116 #include "qapi/qapi-commands-block-core.h"
117 #include "qapi/qapi-commands-migration.h"
118 #include "qapi/qapi-commands-misc.h"
119 #include "qapi/qapi-commands-ui.h"
120 #include "qapi/qmp/qerror.h"
121 #include "sysemu/iothread.h"
122 #include "qemu/guest-random.h"
123
124 #define MAX_VIRTIO_CONSOLES 1
125
126 typedef struct BlockdevOptionsQueueEntry {
127 BlockdevOptions *bdo;
128 Location loc;
129 QSIMPLEQ_ENTRY(BlockdevOptionsQueueEntry) entry;
130 } BlockdevOptionsQueueEntry;
131
132 typedef QSIMPLEQ_HEAD(, BlockdevOptionsQueueEntry) BlockdevOptionsQueue;
133
134 static const char *cpu_option;
135 static const char *mem_path;
136 static const char *incoming;
137 static const char *loadvm;
138 static ram_addr_t maxram_size;
139 static uint64_t ram_slots;
140 static int display_remote;
141 static int snapshot;
142 static bool preconfig_requested;
143 static QemuPluginList plugin_list = QTAILQ_HEAD_INITIALIZER(plugin_list);
144 static BlockdevOptionsQueue bdo_queue = QSIMPLEQ_HEAD_INITIALIZER(bdo_queue);
145 static bool nographic = false;
146 static int mem_prealloc; /* force preallocation of physical target memory */
147 static ram_addr_t ram_size;
148 static const char *vga_model = NULL;
149 static DisplayOptions dpy;
150 static int num_serial_hds;
151 static Chardev **serial_hds;
152 static const char *log_mask;
153 static const char *log_file;
154 static bool list_data_dirs;
155 static const char *watchdog;
156 static const char *qtest_chrdev;
157 static const char *qtest_log;
158
159 static int has_defaults = 1;
160 static int default_serial = 1;
161 static int default_parallel = 1;
162 static int default_monitor = 1;
163 static int default_floppy = 1;
164 static int default_cdrom = 1;
165 static int default_sdcard = 1;
166 static int default_vga = 1;
167 static int default_net = 1;
168
169 static struct {
170 const char *driver;
171 int *flag;
172 } default_list[] = {
173 { .driver = "isa-serial", .flag = &default_serial },
174 { .driver = "isa-parallel", .flag = &default_parallel },
175 { .driver = "isa-fdc", .flag = &default_floppy },
176 { .driver = "floppy", .flag = &default_floppy },
177 { .driver = "ide-cd", .flag = &default_cdrom },
178 { .driver = "ide-hd", .flag = &default_cdrom },
179 { .driver = "ide-drive", .flag = &default_cdrom },
180 { .driver = "scsi-cd", .flag = &default_cdrom },
181 { .driver = "scsi-hd", .flag = &default_cdrom },
182 { .driver = "VGA", .flag = &default_vga },
183 { .driver = "isa-vga", .flag = &default_vga },
184 { .driver = "cirrus-vga", .flag = &default_vga },
185 { .driver = "isa-cirrus-vga", .flag = &default_vga },
186 { .driver = "vmware-svga", .flag = &default_vga },
187 { .driver = "qxl-vga", .flag = &default_vga },
188 { .driver = "virtio-vga", .flag = &default_vga },
189 { .driver = "ati-vga", .flag = &default_vga },
190 { .driver = "vhost-user-vga", .flag = &default_vga },
191 };
192
193 static QemuOptsList qemu_rtc_opts = {
194 .name = "rtc",
195 .head = QTAILQ_HEAD_INITIALIZER(qemu_rtc_opts.head),
196 .merge_lists = true,
197 .desc = {
198 {
199 .name = "base",
200 .type = QEMU_OPT_STRING,
201 },{
202 .name = "clock",
203 .type = QEMU_OPT_STRING,
204 },{
205 .name = "driftfix",
206 .type = QEMU_OPT_STRING,
207 },
208 { /* end of list */ }
209 },
210 };
211
212 static QemuOptsList qemu_option_rom_opts = {
213 .name = "option-rom",
214 .implied_opt_name = "romfile",
215 .head = QTAILQ_HEAD_INITIALIZER(qemu_option_rom_opts.head),
216 .desc = {
217 {
218 .name = "bootindex",
219 .type = QEMU_OPT_NUMBER,
220 }, {
221 .name = "romfile",
222 .type = QEMU_OPT_STRING,
223 },
224 { /* end of list */ }
225 },
226 };
227
228 static QemuOptsList qemu_machine_opts = {
229 .name = "machine",
230 .implied_opt_name = "type",
231 .merge_lists = true,
232 .head = QTAILQ_HEAD_INITIALIZER(qemu_machine_opts.head),
233 .desc = {
234 /*
235 * no elements => accept any
236 * sanity checking will happen later
237 * when setting machine properties
238 */
239 { }
240 },
241 };
242
243 static QemuOptsList qemu_accel_opts = {
244 .name = "accel",
245 .implied_opt_name = "accel",
246 .head = QTAILQ_HEAD_INITIALIZER(qemu_accel_opts.head),
247 .desc = {
248 /*
249 * no elements => accept any
250 * sanity checking will happen later
251 * when setting accelerator properties
252 */
253 { }
254 },
255 };
256
257 static QemuOptsList qemu_boot_opts = {
258 .name = "boot-opts",
259 .implied_opt_name = "order",
260 .merge_lists = true,
261 .head = QTAILQ_HEAD_INITIALIZER(qemu_boot_opts.head),
262 .desc = {
263 {
264 .name = "order",
265 .type = QEMU_OPT_STRING,
266 }, {
267 .name = "once",
268 .type = QEMU_OPT_STRING,
269 }, {
270 .name = "menu",
271 .type = QEMU_OPT_BOOL,
272 }, {
273 .name = "splash",
274 .type = QEMU_OPT_STRING,
275 }, {
276 .name = "splash-time",
277 .type = QEMU_OPT_NUMBER,
278 }, {
279 .name = "reboot-timeout",
280 .type = QEMU_OPT_NUMBER,
281 }, {
282 .name = "strict",
283 .type = QEMU_OPT_BOOL,
284 },
285 { /*End of list */ }
286 },
287 };
288
289 static QemuOptsList qemu_add_fd_opts = {
290 .name = "add-fd",
291 .head = QTAILQ_HEAD_INITIALIZER(qemu_add_fd_opts.head),
292 .desc = {
293 {
294 .name = "fd",
295 .type = QEMU_OPT_NUMBER,
296 .help = "file descriptor of which a duplicate is added to fd set",
297 },{
298 .name = "set",
299 .type = QEMU_OPT_NUMBER,
300 .help = "ID of the fd set to add fd to",
301 },{
302 .name = "opaque",
303 .type = QEMU_OPT_STRING,
304 .help = "free-form string used to describe fd",
305 },
306 { /* end of list */ }
307 },
308 };
309
310 static QemuOptsList qemu_object_opts = {
311 .name = "object",
312 .implied_opt_name = "qom-type",
313 .head = QTAILQ_HEAD_INITIALIZER(qemu_object_opts.head),
314 .desc = {
315 { }
316 },
317 };
318
319 static QemuOptsList qemu_tpmdev_opts = {
320 .name = "tpmdev",
321 .implied_opt_name = "type",
322 .head = QTAILQ_HEAD_INITIALIZER(qemu_tpmdev_opts.head),
323 .desc = {
324 /* options are defined in the TPM backends */
325 { /* end of list */ }
326 },
327 };
328
329 static QemuOptsList qemu_overcommit_opts = {
330 .name = "overcommit",
331 .head = QTAILQ_HEAD_INITIALIZER(qemu_overcommit_opts.head),
332 .desc = {
333 {
334 .name = "mem-lock",
335 .type = QEMU_OPT_BOOL,
336 },
337 {
338 .name = "cpu-pm",
339 .type = QEMU_OPT_BOOL,
340 },
341 { /* end of list */ }
342 },
343 };
344
345 static QemuOptsList qemu_msg_opts = {
346 .name = "msg",
347 .head = QTAILQ_HEAD_INITIALIZER(qemu_msg_opts.head),
348 .desc = {
349 {
350 .name = "timestamp",
351 .type = QEMU_OPT_BOOL,
352 },
353 {
354 .name = "guest-name",
355 .type = QEMU_OPT_BOOL,
356 .help = "Prepends guest name for error messages but only if "
357 "-name guest is set otherwise option is ignored\n",
358 },
359 { /* end of list */ }
360 },
361 };
362
363 static QemuOptsList qemu_name_opts = {
364 .name = "name",
365 .implied_opt_name = "guest",
366 .merge_lists = true,
367 .head = QTAILQ_HEAD_INITIALIZER(qemu_name_opts.head),
368 .desc = {
369 {
370 .name = "guest",
371 .type = QEMU_OPT_STRING,
372 .help = "Sets the name of the guest.\n"
373 "This name will be displayed in the SDL window caption.\n"
374 "The name will also be used for the VNC server",
375 }, {
376 .name = "process",
377 .type = QEMU_OPT_STRING,
378 .help = "Sets the name of the QEMU process, as shown in top etc",
379 }, {
380 .name = "debug-threads",
381 .type = QEMU_OPT_BOOL,
382 .help = "When enabled, name the individual threads; defaults off.\n"
383 "NOTE: The thread names are for debugging and not a\n"
384 "stable API.",
385 },
386 { /* End of list */ }
387 },
388 };
389
390 static QemuOptsList qemu_mem_opts = {
391 .name = "memory",
392 .implied_opt_name = "size",
393 .head = QTAILQ_HEAD_INITIALIZER(qemu_mem_opts.head),
394 .merge_lists = true,
395 .desc = {
396 {
397 .name = "size",
398 .type = QEMU_OPT_SIZE,
399 },
400 {
401 .name = "slots",
402 .type = QEMU_OPT_NUMBER,
403 },
404 {
405 .name = "maxmem",
406 .type = QEMU_OPT_SIZE,
407 },
408 { /* end of list */ }
409 },
410 };
411
412 static QemuOptsList qemu_icount_opts = {
413 .name = "icount",
414 .implied_opt_name = "shift",
415 .merge_lists = true,
416 .head = QTAILQ_HEAD_INITIALIZER(qemu_icount_opts.head),
417 .desc = {
418 {
419 .name = "shift",
420 .type = QEMU_OPT_STRING,
421 }, {
422 .name = "align",
423 .type = QEMU_OPT_BOOL,
424 }, {
425 .name = "sleep",
426 .type = QEMU_OPT_BOOL,
427 }, {
428 .name = "rr",
429 .type = QEMU_OPT_STRING,
430 }, {
431 .name = "rrfile",
432 .type = QEMU_OPT_STRING,
433 }, {
434 .name = "rrsnapshot",
435 .type = QEMU_OPT_STRING,
436 },
437 { /* end of list */ }
438 },
439 };
440
441 static QemuOptsList qemu_fw_cfg_opts = {
442 .name = "fw_cfg",
443 .implied_opt_name = "name",
444 .head = QTAILQ_HEAD_INITIALIZER(qemu_fw_cfg_opts.head),
445 .desc = {
446 {
447 .name = "name",
448 .type = QEMU_OPT_STRING,
449 .help = "Sets the fw_cfg name of the blob to be inserted",
450 }, {
451 .name = "file",
452 .type = QEMU_OPT_STRING,
453 .help = "Sets the name of the file from which "
454 "the fw_cfg blob will be loaded",
455 }, {
456 .name = "string",
457 .type = QEMU_OPT_STRING,
458 .help = "Sets content of the blob to be inserted from a string",
459 }, {
460 .name = "gen_id",
461 .type = QEMU_OPT_STRING,
462 .help = "Sets id of the object generating the fw_cfg blob "
463 "to be inserted",
464 },
465 { /* end of list */ }
466 },
467 };
468
469 static QemuOptsList qemu_action_opts = {
470 .name = "action",
471 .merge_lists = true,
472 .head = QTAILQ_HEAD_INITIALIZER(qemu_action_opts.head),
473 .desc = {
474 {
475 .name = "shutdown",
476 .type = QEMU_OPT_STRING,
477 },{
478 .name = "reboot",
479 .type = QEMU_OPT_STRING,
480 },{
481 .name = "panic",
482 .type = QEMU_OPT_STRING,
483 },{
484 .name = "watchdog",
485 .type = QEMU_OPT_STRING,
486 },
487 { /* end of list */ }
488 },
489 };
490
491 /**
492 * Get machine options
493 *
494 * Returns: machine options (never null).
495 */
496 static QemuOpts *qemu_get_machine_opts(void)
497 {
498 return qemu_find_opts_singleton("machine");
499 }
500
501 const char *qemu_get_vm_name(void)
502 {
503 return qemu_name;
504 }
505
506 static int default_driver_check(void *opaque, QemuOpts *opts, Error **errp)
507 {
508 const char *driver = qemu_opt_get(opts, "driver");
509 int i;
510
511 if (!driver)
512 return 0;
513 for (i = 0; i < ARRAY_SIZE(default_list); i++) {
514 if (strcmp(default_list[i].driver, driver) != 0)
515 continue;
516 *(default_list[i].flag) = 0;
517 }
518 return 0;
519 }
520
521 static int parse_name(void *opaque, QemuOpts *opts, Error **errp)
522 {
523 const char *proc_name;
524
525 if (qemu_opt_get(opts, "debug-threads")) {
526 qemu_thread_naming(qemu_opt_get_bool(opts, "debug-threads", false));
527 }
528 qemu_name = qemu_opt_get(opts, "guest");
529
530 proc_name = qemu_opt_get(opts, "process");
531 if (proc_name) {
532 os_set_proc_name(proc_name);
533 }
534
535 return 0;
536 }
537
538 bool defaults_enabled(void)
539 {
540 return has_defaults;
541 }
542
543 #ifndef _WIN32
544 static int parse_add_fd(void *opaque, QemuOpts *opts, Error **errp)
545 {
546 int fd, dupfd, flags;
547 int64_t fdset_id;
548 const char *fd_opaque = NULL;
549 AddfdInfo *fdinfo;
550
551 fd = qemu_opt_get_number(opts, "fd", -1);
552 fdset_id = qemu_opt_get_number(opts, "set", -1);
553 fd_opaque = qemu_opt_get(opts, "opaque");
554
555 if (fd < 0) {
556 error_setg(errp, "fd option is required and must be non-negative");
557 return -1;
558 }
559
560 if (fd <= STDERR_FILENO) {
561 error_setg(errp, "fd cannot be a standard I/O stream");
562 return -1;
563 }
564
565 /*
566 * All fds inherited across exec() necessarily have FD_CLOEXEC
567 * clear, while qemu sets FD_CLOEXEC on all other fds used internally.
568 */
569 flags = fcntl(fd, F_GETFD);
570 if (flags == -1 || (flags & FD_CLOEXEC)) {
571 error_setg(errp, "fd is not valid or already in use");
572 return -1;
573 }
574
575 if (fdset_id < 0) {
576 error_setg(errp, "set option is required and must be non-negative");
577 return -1;
578 }
579
580 #ifdef F_DUPFD_CLOEXEC
581 dupfd = fcntl(fd, F_DUPFD_CLOEXEC, 0);
582 #else
583 dupfd = dup(fd);
584 if (dupfd != -1) {
585 qemu_set_cloexec(dupfd);
586 }
587 #endif
588 if (dupfd == -1) {
589 error_setg(errp, "error duplicating fd: %s", strerror(errno));
590 return -1;
591 }
592
593 /* add the duplicate fd, and optionally the opaque string, to the fd set */
594 fdinfo = monitor_fdset_add_fd(dupfd, true, fdset_id, !!fd_opaque, fd_opaque,
595 &error_abort);
596 g_free(fdinfo);
597
598 return 0;
599 }
600
601 static int cleanup_add_fd(void *opaque, QemuOpts *opts, Error **errp)
602 {
603 int fd;
604
605 fd = qemu_opt_get_number(opts, "fd", -1);
606 close(fd);
607
608 return 0;
609 }
610 #endif
611
612 /***********************************************************/
613 /* QEMU Block devices */
614
615 #define HD_OPTS "media=disk"
616 #define CDROM_OPTS "media=cdrom"
617 #define FD_OPTS ""
618 #define PFLASH_OPTS ""
619 #define MTD_OPTS ""
620 #define SD_OPTS ""
621
622 static int drive_init_func(void *opaque, QemuOpts *opts, Error **errp)
623 {
624 BlockInterfaceType *block_default_type = opaque;
625
626 return drive_new(opts, *block_default_type, errp) == NULL;
627 }
628
629 static int drive_enable_snapshot(void *opaque, QemuOpts *opts, Error **errp)
630 {
631 if (qemu_opt_get(opts, "snapshot") == NULL) {
632 qemu_opt_set(opts, "snapshot", "on", &error_abort);
633 }
634 return 0;
635 }
636
637 static void default_drive(int enable, int snapshot, BlockInterfaceType type,
638 int index, const char *optstr)
639 {
640 QemuOpts *opts;
641 DriveInfo *dinfo;
642
643 if (!enable || drive_get_by_index(type, index)) {
644 return;
645 }
646
647 opts = drive_add(type, index, NULL, optstr);
648 if (snapshot) {
649 drive_enable_snapshot(NULL, opts, NULL);
650 }
651
652 dinfo = drive_new(opts, type, &error_abort);
653 dinfo->is_default = true;
654
655 }
656
657 static void configure_blockdev(BlockdevOptionsQueue *bdo_queue,
658 MachineClass *machine_class, int snapshot)
659 {
660 /*
661 * If the currently selected machine wishes to override the
662 * units-per-bus property of its default HBA interface type, do so
663 * now.
664 */
665 if (machine_class->units_per_default_bus) {
666 override_max_devs(machine_class->block_default_type,
667 machine_class->units_per_default_bus);
668 }
669
670 /* open the virtual block devices */
671 while (!QSIMPLEQ_EMPTY(bdo_queue)) {
672 BlockdevOptionsQueueEntry *bdo = QSIMPLEQ_FIRST(bdo_queue);
673
674 QSIMPLEQ_REMOVE_HEAD(bdo_queue, entry);
675 loc_push_restore(&bdo->loc);
676 qmp_blockdev_add(bdo->bdo, &error_fatal);
677 loc_pop(&bdo->loc);
678 qapi_free_BlockdevOptions(bdo->bdo);
679 g_free(bdo);
680 }
681 if (snapshot) {
682 qemu_opts_foreach(qemu_find_opts("drive"), drive_enable_snapshot,
683 NULL, NULL);
684 }
685 if (qemu_opts_foreach(qemu_find_opts("drive"), drive_init_func,
686 &machine_class->block_default_type, &error_fatal)) {
687 /* We printed help */
688 exit(0);
689 }
690
691 default_drive(default_cdrom, snapshot, machine_class->block_default_type, 2,
692 CDROM_OPTS);
693 default_drive(default_floppy, snapshot, IF_FLOPPY, 0, FD_OPTS);
694 default_drive(default_sdcard, snapshot, IF_SD, 0, SD_OPTS);
695
696 }
697
698 static QemuOptsList qemu_smp_opts = {
699 .name = "smp-opts",
700 .implied_opt_name = "cpus",
701 .merge_lists = true,
702 .head = QTAILQ_HEAD_INITIALIZER(qemu_smp_opts.head),
703 .desc = {
704 {
705 .name = "cpus",
706 .type = QEMU_OPT_NUMBER,
707 }, {
708 .name = "sockets",
709 .type = QEMU_OPT_NUMBER,
710 }, {
711 .name = "dies",
712 .type = QEMU_OPT_NUMBER,
713 }, {
714 .name = "cores",
715 .type = QEMU_OPT_NUMBER,
716 }, {
717 .name = "threads",
718 .type = QEMU_OPT_NUMBER,
719 }, {
720 .name = "maxcpus",
721 .type = QEMU_OPT_NUMBER,
722 },
723 { /*End of list */ }
724 },
725 };
726
727 static void realtime_init(void)
728 {
729 if (enable_mlock) {
730 if (os_mlock() < 0) {
731 error_report("locking memory failed");
732 exit(1);
733 }
734 }
735 }
736
737
738 static void configure_msg(QemuOpts *opts)
739 {
740 error_with_timestamp = qemu_opt_get_bool(opts, "timestamp", false);
741 error_with_guestname = qemu_opt_get_bool(opts, "guest-name", false);
742 }
743
744
745 /***********************************************************/
746 /* USB devices */
747
748 static int usb_device_add(const char *devname)
749 {
750 USBDevice *dev = NULL;
751
752 if (!machine_usb(current_machine)) {
753 return -1;
754 }
755
756 dev = usbdevice_create(devname);
757 if (!dev)
758 return -1;
759
760 return 0;
761 }
762
763 static int usb_parse(const char *cmdline)
764 {
765 int r;
766 r = usb_device_add(cmdline);
767 if (r < 0) {
768 error_report("could not add USB device '%s'", cmdline);
769 }
770 return r;
771 }
772
773 /***********************************************************/
774 /* machine registration */
775
776 static MachineClass *find_machine(const char *name, GSList *machines)
777 {
778 GSList *el;
779
780 for (el = machines; el; el = el->next) {
781 MachineClass *mc = el->data;
782
783 if (!strcmp(mc->name, name) || !g_strcmp0(mc->alias, name)) {
784 return mc;
785 }
786 }
787
788 return NULL;
789 }
790
791 static MachineClass *find_default_machine(GSList *machines)
792 {
793 GSList *el;
794 MachineClass *default_machineclass = NULL;
795
796 for (el = machines; el; el = el->next) {
797 MachineClass *mc = el->data;
798
799 if (mc->is_default) {
800 assert(default_machineclass == NULL && "Multiple default machines");
801 default_machineclass = mc;
802 }
803 }
804
805 return default_machineclass;
806 }
807
808 static int machine_help_func(QemuOpts *opts, MachineState *machine)
809 {
810 ObjectProperty *prop;
811 ObjectPropertyIterator iter;
812
813 if (!qemu_opt_has_help_opt(opts)) {
814 return 0;
815 }
816
817 object_property_iter_init(&iter, OBJECT(machine));
818 while ((prop = object_property_iter_next(&iter))) {
819 if (!prop->set) {
820 continue;
821 }
822
823 printf("%s.%s=%s", MACHINE_GET_CLASS(machine)->name,
824 prop->name, prop->type);
825 if (prop->description) {
826 printf(" (%s)\n", prop->description);
827 } else {
828 printf("\n");
829 }
830 }
831
832 return 1;
833 }
834
835 static void version(void)
836 {
837 printf("QEMU emulator version " QEMU_FULL_VERSION "\n"
838 QEMU_COPYRIGHT "\n");
839 }
840
841 static void help(int exitcode)
842 {
843 version();
844 printf("usage: %s [options] [disk_image]\n\n"
845 "'disk_image' is a raw hard disk image for IDE hard disk 0\n\n",
846 error_get_progname());
847
848 #define QEMU_OPTIONS_GENERATE_HELP
849 #include "qemu-options-wrapper.h"
850
851 printf("\nDuring emulation, the following keys are useful:\n"
852 "ctrl-alt-f toggle full screen\n"
853 "ctrl-alt-n switch to virtual console 'n'\n"
854 "ctrl-alt toggle mouse and keyboard grab\n"
855 "\n"
856 "When using -nographic, press 'ctrl-a h' to get some help.\n"
857 "\n"
858 QEMU_HELP_BOTTOM "\n");
859
860 exit(exitcode);
861 }
862
863 #define HAS_ARG 0x0001
864
865 typedef struct QEMUOption {
866 const char *name;
867 int flags;
868 int index;
869 uint32_t arch_mask;
870 } QEMUOption;
871
872 static const QEMUOption qemu_options[] = {
873 { "h", 0, QEMU_OPTION_h, QEMU_ARCH_ALL },
874 #define QEMU_OPTIONS_GENERATE_OPTIONS
875 #include "qemu-options-wrapper.h"
876 { NULL },
877 };
878
879 typedef struct VGAInterfaceInfo {
880 const char *opt_name; /* option name */
881 const char *name; /* human-readable name */
882 /* Class names indicating that support is available.
883 * If no class is specified, the interface is always available */
884 const char *class_names[2];
885 } VGAInterfaceInfo;
886
887 static const VGAInterfaceInfo vga_interfaces[VGA_TYPE_MAX] = {
888 [VGA_NONE] = {
889 .opt_name = "none",
890 .name = "no graphic card",
891 },
892 [VGA_STD] = {
893 .opt_name = "std",
894 .name = "standard VGA",
895 .class_names = { "VGA", "isa-vga" },
896 },
897 [VGA_CIRRUS] = {
898 .opt_name = "cirrus",
899 .name = "Cirrus VGA",
900 .class_names = { "cirrus-vga", "isa-cirrus-vga" },
901 },
902 [VGA_VMWARE] = {
903 .opt_name = "vmware",
904 .name = "VMWare SVGA",
905 .class_names = { "vmware-svga" },
906 },
907 [VGA_VIRTIO] = {
908 .opt_name = "virtio",
909 .name = "Virtio VGA",
910 .class_names = { "virtio-vga" },
911 },
912 [VGA_QXL] = {
913 .opt_name = "qxl",
914 .name = "QXL VGA",
915 .class_names = { "qxl-vga" },
916 },
917 [VGA_TCX] = {
918 .opt_name = "tcx",
919 .name = "TCX framebuffer",
920 .class_names = { "SUNW,tcx" },
921 },
922 [VGA_CG3] = {
923 .opt_name = "cg3",
924 .name = "CG3 framebuffer",
925 .class_names = { "cgthree" },
926 },
927 [VGA_XENFB] = {
928 .opt_name = "xenfb",
929 .name = "Xen paravirtualized framebuffer",
930 },
931 };
932
933 static bool vga_interface_available(VGAInterfaceType t)
934 {
935 const VGAInterfaceInfo *ti = &vga_interfaces[t];
936
937 assert(t < VGA_TYPE_MAX);
938 return !ti->class_names[0] ||
939 module_object_class_by_name(ti->class_names[0]) ||
940 module_object_class_by_name(ti->class_names[1]);
941 }
942
943 static const char *
944 get_default_vga_model(const MachineClass *machine_class)
945 {
946 if (machine_class->default_display) {
947 return machine_class->default_display;
948 } else if (vga_interface_available(VGA_CIRRUS)) {
949 return "cirrus";
950 } else if (vga_interface_available(VGA_STD)) {
951 return "std";
952 }
953
954 return NULL;
955 }
956
957 static void select_vgahw(const MachineClass *machine_class, const char *p)
958 {
959 const char *opts;
960 int t;
961
962 if (g_str_equal(p, "help")) {
963 const char *def = get_default_vga_model(machine_class);
964
965 for (t = 0; t < VGA_TYPE_MAX; t++) {
966 const VGAInterfaceInfo *ti = &vga_interfaces[t];
967
968 if (vga_interface_available(t) && ti->opt_name) {
969 printf("%-20s %s%s\n", ti->opt_name, ti->name ?: "",
970 g_str_equal(ti->opt_name, def) ? " (default)" : "");
971 }
972 }
973 exit(0);
974 }
975
976 assert(vga_interface_type == VGA_NONE);
977 for (t = 0; t < VGA_TYPE_MAX; t++) {
978 const VGAInterfaceInfo *ti = &vga_interfaces[t];
979 if (ti->opt_name && strstart(p, ti->opt_name, &opts)) {
980 if (!vga_interface_available(t)) {
981 error_report("%s not available", ti->name);
982 exit(1);
983 }
984 vga_interface_type = t;
985 break;
986 }
987 }
988 if (t == VGA_TYPE_MAX) {
989 invalid_vga:
990 error_report("unknown vga type: %s", p);
991 exit(1);
992 }
993 while (*opts) {
994 const char *nextopt;
995
996 if (strstart(opts, ",retrace=", &nextopt)) {
997 opts = nextopt;
998 if (strstart(opts, "dumb", &nextopt))
999 vga_retrace_method = VGA_RETRACE_DUMB;
1000 else if (strstart(opts, "precise", &nextopt))
1001 vga_retrace_method = VGA_RETRACE_PRECISE;
1002 else goto invalid_vga;
1003 } else goto invalid_vga;
1004 opts = nextopt;
1005 }
1006 }
1007
1008 static void parse_display_qapi(const char *optarg)
1009 {
1010 DisplayOptions *opts;
1011 Visitor *v;
1012
1013 v = qobject_input_visitor_new_str(optarg, "type", &error_fatal);
1014
1015 visit_type_DisplayOptions(v, NULL, &opts, &error_fatal);
1016 QAPI_CLONE_MEMBERS(DisplayOptions, &dpy, opts);
1017
1018 qapi_free_DisplayOptions(opts);
1019 visit_free(v);
1020 }
1021
1022 DisplayOptions *qmp_query_display_options(Error **errp)
1023 {
1024 return QAPI_CLONE(DisplayOptions, &dpy);
1025 }
1026
1027 static void parse_display(const char *p)
1028 {
1029 const char *opts;
1030
1031 if (is_help_option(p)) {
1032 qemu_display_help();
1033 exit(0);
1034 }
1035
1036 if (strstart(p, "sdl", &opts)) {
1037 /*
1038 * sdl DisplayType needs hand-crafted parser instead of
1039 * parse_display_qapi() due to some options not in
1040 * DisplayOptions, specifically:
1041 * - frame
1042 * Already deprecated.
1043 * - ctrl_grab + alt_grab
1044 * Not clear yet what happens to them long-term. Should
1045 * replaced by something better or deprecated and dropped.
1046 */
1047 dpy.type = DISPLAY_TYPE_SDL;
1048 while (*opts) {
1049 const char *nextopt;
1050
1051 if (strstart(opts, ",alt_grab=", &nextopt)) {
1052 opts = nextopt;
1053 if (strstart(opts, "on", &nextopt)) {
1054 alt_grab = 1;
1055 } else if (strstart(opts, "off", &nextopt)) {
1056 alt_grab = 0;
1057 } else {
1058 goto invalid_sdl_args;
1059 }
1060 } else if (strstart(opts, ",ctrl_grab=", &nextopt)) {
1061 opts = nextopt;
1062 if (strstart(opts, "on", &nextopt)) {
1063 ctrl_grab = 1;
1064 } else if (strstart(opts, "off", &nextopt)) {
1065 ctrl_grab = 0;
1066 } else {
1067 goto invalid_sdl_args;
1068 }
1069 } else if (strstart(opts, ",window_close=", &nextopt)) {
1070 opts = nextopt;
1071 dpy.has_window_close = true;
1072 if (strstart(opts, "on", &nextopt)) {
1073 dpy.window_close = true;
1074 } else if (strstart(opts, "off", &nextopt)) {
1075 dpy.window_close = false;
1076 } else {
1077 goto invalid_sdl_args;
1078 }
1079 } else if (strstart(opts, ",show-cursor=", &nextopt)) {
1080 opts = nextopt;
1081 dpy.has_show_cursor = true;
1082 if (strstart(opts, "on", &nextopt)) {
1083 dpy.show_cursor = true;
1084 } else if (strstart(opts, "off", &nextopt)) {
1085 dpy.show_cursor = false;
1086 } else {
1087 goto invalid_sdl_args;
1088 }
1089 } else if (strstart(opts, ",gl=", &nextopt)) {
1090 opts = nextopt;
1091 dpy.has_gl = true;
1092 if (strstart(opts, "on", &nextopt)) {
1093 dpy.gl = DISPLAYGL_MODE_ON;
1094 } else if (strstart(opts, "core", &nextopt)) {
1095 dpy.gl = DISPLAYGL_MODE_CORE;
1096 } else if (strstart(opts, "es", &nextopt)) {
1097 dpy.gl = DISPLAYGL_MODE_ES;
1098 } else if (strstart(opts, "off", &nextopt)) {
1099 dpy.gl = DISPLAYGL_MODE_OFF;
1100 } else {
1101 goto invalid_sdl_args;
1102 }
1103 } else {
1104 invalid_sdl_args:
1105 error_report("invalid SDL option string");
1106 exit(1);
1107 }
1108 opts = nextopt;
1109 }
1110 } else if (strstart(p, "vnc", &opts)) {
1111 /*
1112 * vnc isn't a (local) DisplayType but a protocol for remote
1113 * display access.
1114 */
1115 if (*opts == '=') {
1116 vnc_parse(opts + 1, &error_fatal);
1117 } else {
1118 error_report("VNC requires a display argument vnc=<display>");
1119 exit(1);
1120 }
1121 } else {
1122 parse_display_qapi(p);
1123 }
1124 }
1125
1126 static inline bool nonempty_str(const char *str)
1127 {
1128 return str && *str;
1129 }
1130
1131 static int parse_fw_cfg(void *opaque, QemuOpts *opts, Error **errp)
1132 {
1133 gchar *buf;
1134 size_t size;
1135 const char *name, *file, *str, *gen_id;
1136 FWCfgState *fw_cfg = (FWCfgState *) opaque;
1137
1138 if (fw_cfg == NULL) {
1139 error_setg(errp, "fw_cfg device not available");
1140 return -1;
1141 }
1142 name = qemu_opt_get(opts, "name");
1143 file = qemu_opt_get(opts, "file");
1144 str = qemu_opt_get(opts, "string");
1145 gen_id = qemu_opt_get(opts, "gen_id");
1146
1147 /* we need the name, and exactly one of: file, content string, gen_id */
1148 if (!nonempty_str(name) ||
1149 nonempty_str(file) + nonempty_str(str) + nonempty_str(gen_id) != 1) {
1150 error_setg(errp, "name, plus exactly one of file,"
1151 " string and gen_id, are needed");
1152 return -1;
1153 }
1154 if (strlen(name) > FW_CFG_MAX_FILE_PATH - 1) {
1155 error_setg(errp, "name too long (max. %d char)",
1156 FW_CFG_MAX_FILE_PATH - 1);
1157 return -1;
1158 }
1159 if (nonempty_str(gen_id)) {
1160 /*
1161 * In this particular case where the content is populated
1162 * internally, the "etc/" namespace protection is relaxed,
1163 * so do not emit a warning.
1164 */
1165 } else if (strncmp(name, "opt/", 4) != 0) {
1166 warn_report("externally provided fw_cfg item names "
1167 "should be prefixed with \"opt/\"");
1168 }
1169 if (nonempty_str(str)) {
1170 size = strlen(str); /* NUL terminator NOT included in fw_cfg blob */
1171 buf = g_memdup(str, size);
1172 } else if (nonempty_str(gen_id)) {
1173 if (!fw_cfg_add_from_generator(fw_cfg, name, gen_id, errp)) {
1174 return -1;
1175 }
1176 return 0;
1177 } else {
1178 GError *err = NULL;
1179 if (!g_file_get_contents(file, &buf, &size, &err)) {
1180 error_setg(errp, "can't load %s: %s", file, err->message);
1181 g_error_free(err);
1182 return -1;
1183 }
1184 }
1185 /* For legacy, keep user files in a specific global order. */
1186 fw_cfg_set_order_override(fw_cfg, FW_CFG_ORDER_OVERRIDE_USER);
1187 fw_cfg_add_file(fw_cfg, name, buf, size);
1188 fw_cfg_reset_order_override(fw_cfg);
1189 return 0;
1190 }
1191
1192 static int device_help_func(void *opaque, QemuOpts *opts, Error **errp)
1193 {
1194 return qdev_device_help(opts);
1195 }
1196
1197 static int device_init_func(void *opaque, QemuOpts *opts, Error **errp)
1198 {
1199 DeviceState *dev;
1200
1201 dev = qdev_device_add(opts, errp);
1202 if (!dev && *errp) {
1203 error_report_err(*errp);
1204 return -1;
1205 } else if (dev) {
1206 object_unref(OBJECT(dev));
1207 }
1208 return 0;
1209 }
1210
1211 static int chardev_init_func(void *opaque, QemuOpts *opts, Error **errp)
1212 {
1213 Error *local_err = NULL;
1214
1215 if (!qemu_chr_new_from_opts(opts, NULL, &local_err)) {
1216 if (local_err) {
1217 error_propagate(errp, local_err);
1218 return -1;
1219 }
1220 exit(0);
1221 }
1222 return 0;
1223 }
1224
1225 #ifdef CONFIG_VIRTFS
1226 static int fsdev_init_func(void *opaque, QemuOpts *opts, Error **errp)
1227 {
1228 return qemu_fsdev_add(opts, errp);
1229 }
1230 #endif
1231
1232 static int mon_init_func(void *opaque, QemuOpts *opts, Error **errp)
1233 {
1234 return monitor_init_opts(opts, errp);
1235 }
1236
1237 static void monitor_parse(const char *optarg, const char *mode, bool pretty)
1238 {
1239 static int monitor_device_index = 0;
1240 QemuOpts *opts;
1241 const char *p;
1242 char label[32];
1243
1244 if (strstart(optarg, "chardev:", &p)) {
1245 snprintf(label, sizeof(label), "%s", p);
1246 } else {
1247 snprintf(label, sizeof(label), "compat_monitor%d",
1248 monitor_device_index);
1249 opts = qemu_chr_parse_compat(label, optarg, true);
1250 if (!opts) {
1251 error_report("parse error: %s", optarg);
1252 exit(1);
1253 }
1254 }
1255
1256 opts = qemu_opts_create(qemu_find_opts("mon"), label, 1, &error_fatal);
1257 qemu_opt_set(opts, "mode", mode, &error_abort);
1258 qemu_opt_set(opts, "chardev", label, &error_abort);
1259 if (!strcmp(mode, "control")) {
1260 qemu_opt_set_bool(opts, "pretty", pretty, &error_abort);
1261 } else {
1262 assert(pretty == false);
1263 }
1264 monitor_device_index++;
1265 }
1266
1267 struct device_config {
1268 enum {
1269 DEV_USB, /* -usbdevice */
1270 DEV_SERIAL, /* -serial */
1271 DEV_PARALLEL, /* -parallel */
1272 DEV_DEBUGCON, /* -debugcon */
1273 DEV_GDB, /* -gdb, -s */
1274 DEV_SCLP, /* s390 sclp */
1275 } type;
1276 const char *cmdline;
1277 Location loc;
1278 QTAILQ_ENTRY(device_config) next;
1279 };
1280
1281 static QTAILQ_HEAD(, device_config) device_configs =
1282 QTAILQ_HEAD_INITIALIZER(device_configs);
1283
1284 static void add_device_config(int type, const char *cmdline)
1285 {
1286 struct device_config *conf;
1287
1288 conf = g_malloc0(sizeof(*conf));
1289 conf->type = type;
1290 conf->cmdline = cmdline;
1291 loc_save(&conf->loc);
1292 QTAILQ_INSERT_TAIL(&device_configs, conf, next);
1293 }
1294
1295 static int foreach_device_config(int type, int (*func)(const char *cmdline))
1296 {
1297 struct device_config *conf;
1298 int rc;
1299
1300 QTAILQ_FOREACH(conf, &device_configs, next) {
1301 if (conf->type != type)
1302 continue;
1303 loc_push_restore(&conf->loc);
1304 rc = func(conf->cmdline);
1305 loc_pop(&conf->loc);
1306 if (rc) {
1307 return rc;
1308 }
1309 }
1310 return 0;
1311 }
1312
1313 static void qemu_disable_default_devices(void)
1314 {
1315 MachineClass *machine_class = MACHINE_GET_CLASS(current_machine);
1316
1317 qemu_opts_foreach(qemu_find_opts("device"),
1318 default_driver_check, NULL, NULL);
1319 qemu_opts_foreach(qemu_find_opts("global"),
1320 default_driver_check, NULL, NULL);
1321
1322 if (!vga_model && !default_vga) {
1323 vga_interface_type = VGA_DEVICE;
1324 }
1325 if (!has_defaults || machine_class->no_serial) {
1326 default_serial = 0;
1327 }
1328 if (!has_defaults || machine_class->no_parallel) {
1329 default_parallel = 0;
1330 }
1331 if (!has_defaults || machine_class->no_floppy) {
1332 default_floppy = 0;
1333 }
1334 if (!has_defaults || machine_class->no_cdrom) {
1335 default_cdrom = 0;
1336 }
1337 if (!has_defaults || machine_class->no_sdcard) {
1338 default_sdcard = 0;
1339 }
1340 if (!has_defaults) {
1341 default_monitor = 0;
1342 default_net = 0;
1343 default_vga = 0;
1344 }
1345 }
1346
1347 static void qemu_create_default_devices(void)
1348 {
1349 MachineClass *machine_class = MACHINE_GET_CLASS(current_machine);
1350
1351 if (is_daemonized()) {
1352 /* According to documentation and historically, -nographic redirects
1353 * serial port, parallel port and monitor to stdio, which does not work
1354 * with -daemonize. We can redirect these to null instead, but since
1355 * -nographic is legacy, let's just error out.
1356 * We disallow -nographic only if all other ports are not redirected
1357 * explicitly, to not break existing legacy setups which uses
1358 * -nographic _and_ redirects all ports explicitly - this is valid
1359 * usage, -nographic is just a no-op in this case.
1360 */
1361 if (nographic
1362 && (default_parallel || default_serial || default_monitor)) {
1363 error_report("-nographic cannot be used with -daemonize");
1364 exit(1);
1365 }
1366 }
1367
1368 if (nographic) {
1369 if (default_parallel)
1370 add_device_config(DEV_PARALLEL, "null");
1371 if (default_serial && default_monitor) {
1372 add_device_config(DEV_SERIAL, "mon:stdio");
1373 } else {
1374 if (default_serial)
1375 add_device_config(DEV_SERIAL, "stdio");
1376 if (default_monitor)
1377 monitor_parse("stdio", "readline", false);
1378 }
1379 } else {
1380 if (default_serial)
1381 add_device_config(DEV_SERIAL, "vc:80Cx24C");
1382 if (default_parallel)
1383 add_device_config(DEV_PARALLEL, "vc:80Cx24C");
1384 if (default_monitor)
1385 monitor_parse("vc:80Cx24C", "readline", false);
1386 }
1387
1388 if (default_net) {
1389 QemuOptsList *net = qemu_find_opts("net");
1390 qemu_opts_parse(net, "nic", true, &error_abort);
1391 #ifdef CONFIG_SLIRP
1392 qemu_opts_parse(net, "user", true, &error_abort);
1393 #endif
1394 }
1395
1396 #if defined(CONFIG_VNC)
1397 if (!QTAILQ_EMPTY(&(qemu_find_opts("vnc")->head))) {
1398 display_remote++;
1399 }
1400 #endif
1401 if (dpy.type == DISPLAY_TYPE_DEFAULT && !display_remote) {
1402 if (!qemu_display_find_default(&dpy)) {
1403 dpy.type = DISPLAY_TYPE_NONE;
1404 #if defined(CONFIG_VNC)
1405 vnc_parse("localhost:0,to=99,id=default", &error_abort);
1406 #endif
1407 }
1408 }
1409 if (dpy.type == DISPLAY_TYPE_DEFAULT) {
1410 dpy.type = DISPLAY_TYPE_NONE;
1411 }
1412
1413 /* If no default VGA is requested, the default is "none". */
1414 if (default_vga) {
1415 vga_model = get_default_vga_model(machine_class);
1416 }
1417 if (vga_model) {
1418 select_vgahw(machine_class, vga_model);
1419 }
1420 }
1421
1422 static int serial_parse(const char *devname)
1423 {
1424 int index = num_serial_hds;
1425 char label[32];
1426
1427 if (strcmp(devname, "none") == 0)
1428 return 0;
1429 snprintf(label, sizeof(label), "serial%d", index);
1430 serial_hds = g_renew(Chardev *, serial_hds, index + 1);
1431
1432 serial_hds[index] = qemu_chr_new_mux_mon(label, devname, NULL);
1433 if (!serial_hds[index]) {
1434 error_report("could not connect serial device"
1435 " to character backend '%s'", devname);
1436 return -1;
1437 }
1438 num_serial_hds++;
1439 return 0;
1440 }
1441
1442 Chardev *serial_hd(int i)
1443 {
1444 assert(i >= 0);
1445 if (i < num_serial_hds) {
1446 return serial_hds[i];
1447 }
1448 return NULL;
1449 }
1450
1451 static int parallel_parse(const char *devname)
1452 {
1453 static int index = 0;
1454 char label[32];
1455
1456 if (strcmp(devname, "none") == 0)
1457 return 0;
1458 if (index == MAX_PARALLEL_PORTS) {
1459 error_report("too many parallel ports");
1460 exit(1);
1461 }
1462 snprintf(label, sizeof(label), "parallel%d", index);
1463 parallel_hds[index] = qemu_chr_new_mux_mon(label, devname, NULL);
1464 if (!parallel_hds[index]) {
1465 error_report("could not connect parallel device"
1466 " to character backend '%s'", devname);
1467 return -1;
1468 }
1469 index++;
1470 return 0;
1471 }
1472
1473 static int debugcon_parse(const char *devname)
1474 {
1475 QemuOpts *opts;
1476
1477 if (!qemu_chr_new_mux_mon("debugcon", devname, NULL)) {
1478 error_report("invalid character backend '%s'", devname);
1479 exit(1);
1480 }
1481 opts = qemu_opts_create(qemu_find_opts("device"), "debugcon", 1, NULL);
1482 if (!opts) {
1483 error_report("already have a debugcon device");
1484 exit(1);
1485 }
1486 qemu_opt_set(opts, "driver", "isa-debugcon", &error_abort);
1487 qemu_opt_set(opts, "chardev", "debugcon", &error_abort);
1488 return 0;
1489 }
1490
1491 static gint machine_class_cmp(gconstpointer a, gconstpointer b)
1492 {
1493 const MachineClass *mc1 = a, *mc2 = b;
1494 int res;
1495
1496 if (mc1->family == NULL) {
1497 if (mc2->family == NULL) {
1498 /* Compare standalone machine types against each other; they sort
1499 * in increasing order.
1500 */
1501 return strcmp(object_class_get_name(OBJECT_CLASS(mc1)),
1502 object_class_get_name(OBJECT_CLASS(mc2)));
1503 }
1504
1505 /* Standalone machine types sort after families. */
1506 return 1;
1507 }
1508
1509 if (mc2->family == NULL) {
1510 /* Families sort before standalone machine types. */
1511 return -1;
1512 }
1513
1514 /* Families sort between each other alphabetically increasingly. */
1515 res = strcmp(mc1->family, mc2->family);
1516 if (res != 0) {
1517 return res;
1518 }
1519
1520 /* Within the same family, machine types sort in decreasing order. */
1521 return strcmp(object_class_get_name(OBJECT_CLASS(mc2)),
1522 object_class_get_name(OBJECT_CLASS(mc1)));
1523 }
1524
1525 static MachineClass *machine_parse(const char *name, GSList *machines)
1526 {
1527 MachineClass *mc;
1528 GSList *el;
1529
1530 if (is_help_option(name)) {
1531 printf("Supported machines are:\n");
1532 machines = g_slist_sort(machines, machine_class_cmp);
1533 for (el = machines; el; el = el->next) {
1534 MachineClass *mc = el->data;
1535 if (mc->alias) {
1536 printf("%-20s %s (alias of %s)\n", mc->alias, mc->desc, mc->name);
1537 }
1538 printf("%-20s %s%s%s\n", mc->name, mc->desc,
1539 mc->is_default ? " (default)" : "",
1540 mc->deprecation_reason ? " (deprecated)" : "");
1541 }
1542 exit(0);
1543 }
1544
1545 mc = find_machine(name, machines);
1546 if (!mc) {
1547 error_report("unsupported machine type");
1548 error_printf("Use -machine help to list supported machines\n");
1549 exit(1);
1550 }
1551 return mc;
1552 }
1553
1554 static const char *pid_file;
1555 static Notifier qemu_unlink_pidfile_notifier;
1556
1557 static void qemu_unlink_pidfile(Notifier *n, void *data)
1558 {
1559 if (pid_file) {
1560 unlink(pid_file);
1561 }
1562 }
1563
1564 static const QEMUOption *lookup_opt(int argc, char **argv,
1565 const char **poptarg, int *poptind)
1566 {
1567 const QEMUOption *popt;
1568 int optind = *poptind;
1569 char *r = argv[optind];
1570 const char *optarg;
1571
1572 loc_set_cmdline(argv, optind, 1);
1573 optind++;
1574 /* Treat --foo the same as -foo. */
1575 if (r[1] == '-')
1576 r++;
1577 popt = qemu_options;
1578 for(;;) {
1579 if (!popt->name) {
1580 error_report("invalid option");
1581 exit(1);
1582 }
1583 if (!strcmp(popt->name, r + 1))
1584 break;
1585 popt++;
1586 }
1587 if (popt->flags & HAS_ARG) {
1588 if (optind >= argc) {
1589 error_report("requires an argument");
1590 exit(1);
1591 }
1592 optarg = argv[optind++];
1593 loc_set_cmdline(argv, optind - 2, 2);
1594 } else {
1595 optarg = NULL;
1596 }
1597
1598 *poptarg = optarg;
1599 *poptind = optind;
1600
1601 return popt;
1602 }
1603
1604 static MachineClass *select_machine(void)
1605 {
1606 GSList *machines = object_class_get_list(TYPE_MACHINE, false);
1607 MachineClass *machine_class = find_default_machine(machines);
1608 const char *optarg;
1609 QemuOpts *opts;
1610 Location loc;
1611
1612 loc_push_none(&loc);
1613
1614 opts = qemu_get_machine_opts();
1615 qemu_opts_loc_restore(opts);
1616
1617 optarg = qemu_opt_get(opts, "type");
1618 if (optarg) {
1619 machine_class = machine_parse(optarg, machines);
1620 }
1621
1622 if (!machine_class) {
1623 error_report("No machine specified, and there is no default");
1624 error_printf("Use -machine help to list supported machines\n");
1625 exit(1);
1626 }
1627
1628 loc_pop(&loc);
1629 g_slist_free(machines);
1630 return machine_class;
1631 }
1632
1633 static int object_parse_property_opt(Object *obj,
1634 const char *name, const char *value,
1635 const char *skip, Error **errp)
1636 {
1637 if (g_str_equal(name, skip)) {
1638 return 0;
1639 }
1640
1641 if (!object_property_parse(obj, name, value, errp)) {
1642 return -1;
1643 }
1644
1645 return 0;
1646 }
1647
1648 static int machine_set_property(void *opaque,
1649 const char *name, const char *value,
1650 Error **errp)
1651 {
1652 g_autofree char *qom_name = g_strdup(name);
1653 char *p;
1654
1655 for (p = qom_name; *p; p++) {
1656 if (*p == '_') {
1657 *p = '-';
1658 }
1659 }
1660
1661 /* Legacy options do not correspond to MachineState properties. */
1662 if (g_str_equal(qom_name, "accel")) {
1663 return 0;
1664 }
1665 if (g_str_equal(qom_name, "igd-passthru")) {
1666 object_register_sugar_prop(ACCEL_CLASS_NAME("xen"), qom_name, value);
1667 return 0;
1668 }
1669 if (g_str_equal(qom_name, "kvm-shadow-mem")) {
1670 object_register_sugar_prop(ACCEL_CLASS_NAME("kvm"), qom_name, value);
1671 return 0;
1672 }
1673 if (g_str_equal(qom_name, "kernel-irqchip")) {
1674 object_register_sugar_prop(ACCEL_CLASS_NAME("kvm"), qom_name, value);
1675 object_register_sugar_prop(ACCEL_CLASS_NAME("whpx"), qom_name, value);
1676 return 0;
1677 }
1678
1679 return object_parse_property_opt(opaque, name, value, "type", errp);
1680 }
1681
1682 /*
1683 * Initial object creation happens before all other
1684 * QEMU data types are created. The majority of objects
1685 * can be created at this point. The rng-egd object
1686 * cannot be created here, as it depends on the chardev
1687 * already existing.
1688 */
1689 static bool object_create_early(const char *type, QemuOpts *opts)
1690 {
1691 if (user_creatable_print_help(type, opts)) {
1692 exit(0);
1693 }
1694
1695 /*
1696 * Objects should not be made "delayed" without a reason. If you
1697 * add one, state the reason in a comment!
1698 */
1699
1700 /* Reason: rng-egd property "chardev" */
1701 if (g_str_equal(type, "rng-egd")) {
1702 return false;
1703 }
1704
1705 #if defined(CONFIG_VHOST_USER) && defined(CONFIG_LINUX)
1706 /* Reason: cryptodev-vhost-user property "chardev" */
1707 if (g_str_equal(type, "cryptodev-vhost-user")) {
1708 return false;
1709 }
1710 #endif
1711
1712 /* Reason: vhost-user-blk-server property "node-name" */
1713 if (g_str_equal(type, "vhost-user-blk-server")) {
1714 return false;
1715 }
1716 /*
1717 * Reason: filter-* property "netdev" etc.
1718 */
1719 if (g_str_equal(type, "filter-buffer") ||
1720 g_str_equal(type, "filter-dump") ||
1721 g_str_equal(type, "filter-mirror") ||
1722 g_str_equal(type, "filter-redirector") ||
1723 g_str_equal(type, "colo-compare") ||
1724 g_str_equal(type, "filter-rewriter") ||
1725 g_str_equal(type, "filter-replay")) {
1726 return false;
1727 }
1728
1729 /* Allocation of large amounts of memory may delay
1730 * chardev initialization for too long, and trigger timeouts
1731 * on software that waits for a monitor socket to be created
1732 * (e.g. libvirt).
1733 */
1734 if (g_str_has_prefix(type, "memory-backend-")) {
1735 return false;
1736 }
1737
1738 return true;
1739 }
1740
1741 static void qemu_apply_machine_options(void)
1742 {
1743 MachineClass *machine_class = MACHINE_GET_CLASS(current_machine);
1744 QemuOpts *machine_opts = qemu_get_machine_opts();
1745 const char *boot_order = NULL;
1746 const char *boot_once = NULL;
1747 QemuOpts *opts;
1748
1749 qemu_opt_foreach(machine_opts, machine_set_property, current_machine,
1750 &error_fatal);
1751 current_machine->ram_size = ram_size;
1752 current_machine->maxram_size = maxram_size;
1753 current_machine->ram_slots = ram_slots;
1754
1755 opts = qemu_opts_find(qemu_find_opts("boot-opts"), NULL);
1756 if (opts) {
1757 boot_order = qemu_opt_get(opts, "order");
1758 if (boot_order) {
1759 validate_bootdevices(boot_order, &error_fatal);
1760 }
1761
1762 boot_once = qemu_opt_get(opts, "once");
1763 if (boot_once) {
1764 validate_bootdevices(boot_once, &error_fatal);
1765 }
1766
1767 boot_menu = qemu_opt_get_bool(opts, "menu", boot_menu);
1768 boot_strict = qemu_opt_get_bool(opts, "strict", false);
1769 }
1770
1771 if (!boot_order) {
1772 boot_order = machine_class->default_boot_order;
1773 }
1774
1775 current_machine->boot_order = boot_order;
1776 current_machine->boot_once = boot_once;
1777
1778 if (semihosting_enabled() && !semihosting_get_argc()) {
1779 const char *kernel_filename = qemu_opt_get(machine_opts, "kernel");
1780 const char *kernel_cmdline = qemu_opt_get(machine_opts, "append") ?: "";
1781 /* fall back to the -kernel/-append */
1782 semihosting_arg_fallback(kernel_filename, kernel_cmdline);
1783 }
1784 }
1785
1786 static void qemu_create_early_backends(void)
1787 {
1788 MachineClass *machine_class = MACHINE_GET_CLASS(current_machine);
1789
1790 if ((alt_grab || ctrl_grab) && dpy.type != DISPLAY_TYPE_SDL) {
1791 error_report("-alt-grab and -ctrl-grab are only valid "
1792 "for SDL, ignoring option");
1793 }
1794 if (dpy.has_window_close &&
1795 (dpy.type != DISPLAY_TYPE_GTK && dpy.type != DISPLAY_TYPE_SDL)) {
1796 error_report("-no-quit is only valid for GTK and SDL, "
1797 "ignoring option");
1798 }
1799
1800 qemu_display_early_init(&dpy);
1801 qemu_console_early_init();
1802
1803 if (dpy.has_gl && dpy.gl != DISPLAYGL_MODE_OFF && display_opengl == 0) {
1804 #if defined(CONFIG_OPENGL)
1805 error_report("OpenGL is not supported by the display");
1806 #else
1807 error_report("OpenGL support is disabled");
1808 #endif
1809 exit(1);
1810 }
1811
1812 qemu_opts_foreach(qemu_find_opts("object"),
1813 user_creatable_add_opts_foreach,
1814 object_create_early, &error_fatal);
1815
1816 /* spice needs the timers to be initialized by this point */
1817 /* spice must initialize before audio as it changes the default auiodev */
1818 /* spice must initialize before chardevs (for spicevmc and spiceport) */
1819 qemu_spice.init();
1820
1821 qemu_opts_foreach(qemu_find_opts("chardev"),
1822 chardev_init_func, NULL, &error_fatal);
1823
1824 #ifdef CONFIG_VIRTFS
1825 qemu_opts_foreach(qemu_find_opts("fsdev"),
1826 fsdev_init_func, NULL, &error_fatal);
1827 #endif
1828
1829 /*
1830 * Note: we need to create audio and block backends before
1831 * machine_set_property(), so machine properties can refer to
1832 * them.
1833 */
1834 configure_blockdev(&bdo_queue, machine_class, snapshot);
1835 audio_init_audiodevs();
1836 }
1837
1838
1839 /*
1840 * The remainder of object creation happens after the
1841 * creation of chardev, fsdev, net clients and device data types.
1842 */
1843 static bool object_create_late(const char *type, QemuOpts *opts)
1844 {
1845 return !object_create_early(type, opts);
1846 }
1847
1848 static void qemu_create_late_backends(void)
1849 {
1850 if (qtest_chrdev) {
1851 qtest_server_init(qtest_chrdev, qtest_log, &error_fatal);
1852 }
1853
1854 net_init_clients(&error_fatal);
1855
1856 qemu_opts_foreach(qemu_find_opts("object"),
1857 user_creatable_add_opts_foreach,
1858 object_create_late, &error_fatal);
1859
1860 if (tpm_init() < 0) {
1861 exit(1);
1862 }
1863
1864 qemu_opts_foreach(qemu_find_opts("mon"),
1865 mon_init_func, NULL, &error_fatal);
1866
1867 if (foreach_device_config(DEV_SERIAL, serial_parse) < 0)
1868 exit(1);
1869 if (foreach_device_config(DEV_PARALLEL, parallel_parse) < 0)
1870 exit(1);
1871 if (foreach_device_config(DEV_DEBUGCON, debugcon_parse) < 0)
1872 exit(1);
1873
1874 /* now chardevs have been created we may have semihosting to connect */
1875 qemu_semihosting_connect_chardevs();
1876 qemu_semihosting_console_init();
1877 }
1878
1879 static bool have_custom_ram_size(void)
1880 {
1881 QemuOpts *opts = qemu_find_opts_singleton("memory");
1882 return !!qemu_opt_get_size(opts, "size", 0);
1883 }
1884
1885 static void qemu_resolve_machine_memdev(void)
1886 {
1887 if (current_machine->ram_memdev_id) {
1888 Object *backend;
1889 ram_addr_t backend_size;
1890
1891 backend = object_resolve_path_type(current_machine->ram_memdev_id,
1892 TYPE_MEMORY_BACKEND, NULL);
1893 if (!backend) {
1894 error_report("Memory backend '%s' not found",
1895 current_machine->ram_memdev_id);
1896 exit(EXIT_FAILURE);
1897 }
1898 backend_size = object_property_get_uint(backend, "size", &error_abort);
1899 if (have_custom_ram_size() && backend_size != ram_size) {
1900 error_report("Size specified by -m option must match size of "
1901 "explicitly specified 'memory-backend' property");
1902 exit(EXIT_FAILURE);
1903 }
1904 if (mem_path) {
1905 error_report("'-mem-path' can't be used together with"
1906 "'-machine memory-backend'");
1907 exit(EXIT_FAILURE);
1908 }
1909 ram_size = backend_size;
1910 }
1911
1912 if (!xen_enabled()) {
1913 /* On 32-bit hosts, QEMU is limited by virtual address space */
1914 if (ram_size > (2047 << 20) && HOST_LONG_BITS == 32) {
1915 error_report("at most 2047 MB RAM can be simulated");
1916 exit(1);
1917 }
1918 }
1919 }
1920
1921 static void set_memory_options(MachineClass *mc)
1922 {
1923 uint64_t sz;
1924 const char *mem_str;
1925 const ram_addr_t default_ram_size = mc->default_ram_size;
1926 QemuOpts *opts = qemu_find_opts_singleton("memory");
1927 Location loc;
1928
1929 loc_push_none(&loc);
1930 qemu_opts_loc_restore(opts);
1931
1932 sz = 0;
1933 mem_str = qemu_opt_get(opts, "size");
1934 if (mem_str) {
1935 if (!*mem_str) {
1936 error_report("missing 'size' option value");
1937 exit(EXIT_FAILURE);
1938 }
1939
1940 sz = qemu_opt_get_size(opts, "size", ram_size);
1941
1942 /* Fix up legacy suffix-less format */
1943 if (g_ascii_isdigit(mem_str[strlen(mem_str) - 1])) {
1944 uint64_t overflow_check = sz;
1945
1946 sz *= MiB;
1947 if (sz / MiB != overflow_check) {
1948 error_report("too large 'size' option value");
1949 exit(EXIT_FAILURE);
1950 }
1951 }
1952 }
1953
1954 /* backward compatibility behaviour for case "-m 0" */
1955 if (sz == 0) {
1956 sz = default_ram_size;
1957 }
1958
1959 sz = QEMU_ALIGN_UP(sz, 8192);
1960 if (mc->fixup_ram_size) {
1961 sz = mc->fixup_ram_size(sz);
1962 }
1963 ram_size = sz;
1964 if (ram_size != sz) {
1965 error_report("ram size too large");
1966 exit(EXIT_FAILURE);
1967 }
1968
1969 /* store value for the future use */
1970 qemu_opt_set_number(opts, "size", ram_size, &error_abort);
1971 maxram_size = ram_size;
1972
1973 if (qemu_opt_get(opts, "maxmem")) {
1974 uint64_t slots;
1975
1976 sz = qemu_opt_get_size(opts, "maxmem", 0);
1977 slots = qemu_opt_get_number(opts, "slots", 0);
1978 if (sz < ram_size) {
1979 error_report("invalid value of -m option maxmem: "
1980 "maximum memory size (0x%" PRIx64 ") must be at least "
1981 "the initial memory size (0x" RAM_ADDR_FMT ")",
1982 sz, ram_size);
1983 exit(EXIT_FAILURE);
1984 } else if (slots && sz == ram_size) {
1985 error_report("invalid value of -m option maxmem: "
1986 "memory slots were specified but maximum memory size "
1987 "(0x%" PRIx64 ") is equal to the initial memory size "
1988 "(0x" RAM_ADDR_FMT ")", sz, ram_size);
1989 exit(EXIT_FAILURE);
1990 }
1991
1992 maxram_size = sz;
1993 ram_slots = slots;
1994 } else if (qemu_opt_get(opts, "slots")) {
1995 error_report("invalid -m option value: missing 'maxmem' option");
1996 exit(EXIT_FAILURE);
1997 }
1998
1999 loc_pop(&loc);
2000 }
2001
2002 static void qemu_create_machine(MachineClass *machine_class)
2003 {
2004 object_set_machine_compat_props(machine_class->compat_props);
2005
2006 set_memory_options(machine_class);
2007
2008 current_machine = MACHINE(object_new_with_class(OBJECT_CLASS(machine_class)));
2009 if (machine_help_func(qemu_get_machine_opts(), current_machine)) {
2010 exit(0);
2011 }
2012 object_property_add_child(object_get_root(), "machine",
2013 OBJECT(current_machine));
2014 object_property_add_child(container_get(OBJECT(current_machine),
2015 "/unattached"),
2016 "sysbus", OBJECT(sysbus_get_default()));
2017
2018 if (machine_class->minimum_page_bits) {
2019 if (!set_preferred_target_page_bits(machine_class->minimum_page_bits)) {
2020 /* This would be a board error: specifying a minimum smaller than
2021 * a target's compile-time fixed setting.
2022 */
2023 g_assert_not_reached();
2024 }
2025 }
2026
2027 cpu_exec_init_all();
2028 page_size_init();
2029
2030 if (machine_class->hw_version) {
2031 qemu_set_hw_version(machine_class->hw_version);
2032 }
2033
2034 machine_smp_parse(current_machine,
2035 qemu_opts_find(qemu_find_opts("smp-opts"), NULL), &error_fatal);
2036
2037 /*
2038 * Get the default machine options from the machine if it is not already
2039 * specified either by the configuration file or by the command line.
2040 */
2041 if (machine_class->default_machine_opts) {
2042 qemu_opts_set_defaults(qemu_find_opts("machine"),
2043 machine_class->default_machine_opts, 0);
2044 }
2045 }
2046
2047 static int global_init_func(void *opaque, QemuOpts *opts, Error **errp)
2048 {
2049 GlobalProperty *g;
2050
2051 g = g_malloc0(sizeof(*g));
2052 g->driver = qemu_opt_get(opts, "driver");
2053 g->property = qemu_opt_get(opts, "property");
2054 g->value = qemu_opt_get(opts, "value");
2055 qdev_prop_register_global(g);
2056 return 0;
2057 }
2058
2059 static int qemu_read_default_config_file(void)
2060 {
2061 int ret;
2062 g_autofree char *file = get_relocated_path(CONFIG_QEMU_CONFDIR "/qemu.conf");
2063
2064 ret = qemu_read_config_file(file);
2065 if (ret < 0 && ret != -ENOENT) {
2066 return ret;
2067 }
2068
2069 return 0;
2070 }
2071
2072 static int qemu_set_option(const char *str)
2073 {
2074 Error *local_err = NULL;
2075 char group[64], id[64], arg[64];
2076 QemuOptsList *list;
2077 QemuOpts *opts;
2078 int rc, offset;
2079
2080 rc = sscanf(str, "%63[^.].%63[^.].%63[^=]%n", group, id, arg, &offset);
2081 if (rc < 3 || str[offset] != '=') {
2082 error_report("can't parse: \"%s\"", str);
2083 return -1;
2084 }
2085
2086 list = qemu_find_opts(group);
2087 if (list == NULL) {
2088 return -1;
2089 }
2090
2091 opts = qemu_opts_find(list, id);
2092 if (!opts) {
2093 error_report("there is no %s \"%s\" defined",
2094 list->name, id);
2095 return -1;
2096 }
2097
2098 if (!qemu_opt_set(opts, arg, str + offset + 1, &local_err)) {
2099 error_report_err(local_err);
2100 return -1;
2101 }
2102 return 0;
2103 }
2104
2105 static void user_register_global_props(void)
2106 {
2107 qemu_opts_foreach(qemu_find_opts("global"),
2108 global_init_func, NULL, NULL);
2109 }
2110
2111 static int do_configure_icount(void *opaque, QemuOpts *opts, Error **errp)
2112 {
2113 icount_configure(opts, errp);
2114 return 0;
2115 }
2116
2117 static int accelerator_set_property(void *opaque,
2118 const char *name, const char *value,
2119 Error **errp)
2120 {
2121 return object_parse_property_opt(opaque, name, value, "accel", errp);
2122 }
2123
2124 static int do_configure_accelerator(void *opaque, QemuOpts *opts, Error **errp)
2125 {
2126 bool *p_init_failed = opaque;
2127 const char *acc = qemu_opt_get(opts, "accel");
2128 AccelClass *ac = accel_find(acc);
2129 AccelState *accel;
2130 int ret;
2131 bool qtest_with_kvm;
2132
2133 qtest_with_kvm = g_str_equal(acc, "kvm") && qtest_chrdev != NULL;
2134
2135 if (!ac) {
2136 *p_init_failed = true;
2137 if (!qtest_with_kvm) {
2138 error_report("invalid accelerator %s", acc);
2139 }
2140 return 0;
2141 }
2142 accel = ACCEL(object_new_with_class(OBJECT_CLASS(ac)));
2143 object_apply_compat_props(OBJECT(accel));
2144 qemu_opt_foreach(opts, accelerator_set_property,
2145 accel,
2146 &error_fatal);
2147
2148 ret = accel_init_machine(accel, current_machine);
2149 if (ret < 0) {
2150 *p_init_failed = true;
2151 if (!qtest_with_kvm || ret != -ENOENT) {
2152 error_report("failed to initialize %s: %s", acc, strerror(-ret));
2153 }
2154 return 0;
2155 }
2156
2157 return 1;
2158 }
2159
2160 static void configure_accelerators(const char *progname)
2161 {
2162 const char *accelerators;
2163 bool init_failed = false;
2164
2165 qemu_opts_foreach(qemu_find_opts("icount"),
2166 do_configure_icount, NULL, &error_fatal);
2167
2168 accelerators = qemu_opt_get(qemu_get_machine_opts(), "accel");
2169 if (QTAILQ_EMPTY(&qemu_accel_opts.head)) {
2170 char **accel_list, **tmp;
2171
2172 if (accelerators == NULL) {
2173 /* Select the default accelerator */
2174 bool have_tcg = accel_find("tcg");
2175 bool have_kvm = accel_find("kvm");
2176
2177 if (have_tcg && have_kvm) {
2178 if (g_str_has_suffix(progname, "kvm")) {
2179 /* If the program name ends with "kvm", we prefer KVM */
2180 accelerators = "kvm:tcg";
2181 } else {
2182 accelerators = "tcg:kvm";
2183 }
2184 } else if (have_kvm) {
2185 accelerators = "kvm";
2186 } else if (have_tcg) {
2187 accelerators = "tcg";
2188 } else {
2189 error_report("No accelerator selected and"
2190 " no default accelerator available");
2191 exit(1);
2192 }
2193 }
2194 accel_list = g_strsplit(accelerators, ":", 0);
2195
2196 for (tmp = accel_list; *tmp; tmp++) {
2197 /*
2198 * Filter invalid accelerators here, to prevent obscenities
2199 * such as "-machine accel=tcg,,thread=single".
2200 */
2201 if (accel_find(*tmp)) {
2202 qemu_opts_parse_noisily(qemu_find_opts("accel"), *tmp, true);
2203 } else {
2204 init_failed = true;
2205 error_report("invalid accelerator %s", *tmp);
2206 }
2207 }
2208 g_strfreev(accel_list);
2209 } else {
2210 if (accelerators != NULL) {
2211 error_report("The -accel and \"-machine accel=\" options are incompatible");
2212 exit(1);
2213 }
2214 }
2215
2216 if (!qemu_opts_foreach(qemu_find_opts("accel"),
2217 do_configure_accelerator, &init_failed, &error_fatal)) {
2218 if (!init_failed) {
2219 error_report("no accelerator found");
2220 }
2221 exit(1);
2222 }
2223
2224 if (init_failed && !qtest_chrdev) {
2225 AccelClass *ac = ACCEL_GET_CLASS(current_accel());
2226 error_report("falling back to %s", ac->name);
2227 }
2228
2229 if (icount_enabled() && !tcg_enabled()) {
2230 error_report("-icount is not allowed with hardware virtualization");
2231 exit(1);
2232 }
2233 }
2234
2235 static void create_default_memdev(MachineState *ms, const char *path)
2236 {
2237 Object *obj;
2238 MachineClass *mc = MACHINE_GET_CLASS(ms);
2239
2240 obj = object_new(path ? TYPE_MEMORY_BACKEND_FILE : TYPE_MEMORY_BACKEND_RAM);
2241 if (path) {
2242 object_property_set_str(obj, "mem-path", path, &error_fatal);
2243 }
2244 object_property_set_int(obj, "size", ms->ram_size, &error_fatal);
2245 object_property_add_child(object_get_objects_root(), mc->default_ram_id,
2246 obj);
2247 /* Ensure backend's memory region name is equal to mc->default_ram_id */
2248 object_property_set_bool(obj, "x-use-canonical-path-for-ramblock-id",
2249 false, &error_fatal);
2250 user_creatable_complete(USER_CREATABLE(obj), &error_fatal);
2251 object_unref(obj);
2252 object_property_set_str(OBJECT(ms), "memory-backend", mc->default_ram_id,
2253 &error_fatal);
2254 }
2255
2256 static void qemu_validate_options(void)
2257 {
2258 QemuOpts *machine_opts = qemu_get_machine_opts();
2259 const char *kernel_filename = qemu_opt_get(machine_opts, "kernel");
2260 const char *initrd_filename = qemu_opt_get(machine_opts, "initrd");
2261 const char *kernel_cmdline = qemu_opt_get(machine_opts, "append");
2262
2263 if (kernel_filename == NULL) {
2264 if (kernel_cmdline != NULL) {
2265 error_report("-append only allowed with -kernel option");
2266 exit(1);
2267 }
2268
2269 if (initrd_filename != NULL) {
2270 error_report("-initrd only allowed with -kernel option");
2271 exit(1);
2272 }
2273 }
2274
2275 if (loadvm && preconfig_requested) {
2276 error_report("'preconfig' and 'loadvm' options are "
2277 "mutually exclusive");
2278 exit(EXIT_FAILURE);
2279 }
2280 if (incoming && preconfig_requested && strcmp(incoming, "defer") != 0) {
2281 error_report("'preconfig' supports '-incoming defer' only");
2282 exit(EXIT_FAILURE);
2283 }
2284
2285 #ifdef CONFIG_CURSES
2286 if (is_daemonized() && dpy.type == DISPLAY_TYPE_CURSES) {
2287 error_report("curses display cannot be used with -daemonize");
2288 exit(1);
2289 }
2290 #endif
2291 }
2292
2293 static void qemu_process_sugar_options(void)
2294 {
2295 if (mem_prealloc) {
2296 char *val;
2297
2298 val = g_strdup_printf("%d",
2299 (uint32_t) qemu_opt_get_number(qemu_find_opts_singleton("smp-opts"), "cpus", 1));
2300 object_register_sugar_prop("memory-backend", "prealloc-threads", val);
2301 g_free(val);
2302 object_register_sugar_prop("memory-backend", "prealloc", "on");
2303 }
2304
2305 if (watchdog) {
2306 int i = select_watchdog(watchdog);
2307 if (i > 0)
2308 exit (i == 1 ? 1 : 0);
2309 }
2310 }
2311
2312 /* -action processing */
2313
2314 /*
2315 * Process all the -action parameters parsed from cmdline.
2316 */
2317 static int process_runstate_actions(void *opaque, QemuOpts *opts, Error **errp)
2318 {
2319 Error *local_err = NULL;
2320 QDict *qdict = qemu_opts_to_qdict(opts, NULL);
2321 QObject *ret = NULL;
2322 qmp_marshal_set_action(qdict, &ret, &local_err);
2323 qobject_unref(ret);
2324 qobject_unref(qdict);
2325 if (local_err) {
2326 error_propagate(errp, local_err);
2327 return 1;
2328 }
2329 return 0;
2330 }
2331
2332 static void qemu_process_early_options(void)
2333 {
2334 #ifdef CONFIG_SECCOMP
2335 QemuOptsList *olist = qemu_find_opts_err("sandbox", NULL);
2336 if (olist) {
2337 qemu_opts_foreach(olist, parse_sandbox, NULL, &error_fatal);
2338 }
2339 #endif
2340
2341 qemu_opts_foreach(qemu_find_opts("name"),
2342 parse_name, NULL, &error_fatal);
2343
2344 if (qemu_opts_foreach(qemu_find_opts("action"),
2345 process_runstate_actions, NULL, &error_fatal)) {
2346 exit(1);
2347 }
2348
2349 #ifndef _WIN32
2350 qemu_opts_foreach(qemu_find_opts("add-fd"),
2351 parse_add_fd, NULL, &error_fatal);
2352
2353 qemu_opts_foreach(qemu_find_opts("add-fd"),
2354 cleanup_add_fd, NULL, &error_fatal);
2355 #endif
2356
2357 if (!trace_init_backends()) {
2358 exit(1);
2359 }
2360 trace_init_file();
2361
2362 /* Open the logfile at this point and set the log mask if necessary. */
2363 qemu_set_log_filename(log_file, &error_fatal);
2364 if (log_mask) {
2365 int mask;
2366 mask = qemu_str_to_log_mask(log_mask);
2367 if (!mask) {
2368 qemu_print_log_usage(stdout);
2369 exit(1);
2370 }
2371 qemu_set_log(mask);
2372 } else {
2373 qemu_set_log(0);
2374 }
2375
2376 qemu_add_default_firmwarepath();
2377 }
2378
2379 static void qemu_process_help_options(void)
2380 {
2381 /*
2382 * Check for -cpu help and -device help before we call select_machine(),
2383 * which will return an error if the architecture has no default machine
2384 * type and the user did not specify one, so that the user doesn't need
2385 * to say '-cpu help -machine something'.
2386 */
2387 if (cpu_option && is_help_option(cpu_option)) {
2388 list_cpus(cpu_option);
2389 exit(0);
2390 }
2391
2392 if (qemu_opts_foreach(qemu_find_opts("device"),
2393 device_help_func, NULL, NULL)) {
2394 exit(0);
2395 }
2396
2397 /* -L help lists the data directories and exits. */
2398 if (list_data_dirs) {
2399 qemu_list_data_dirs();
2400 exit(0);
2401 }
2402 }
2403
2404 static void qemu_maybe_daemonize(const char *pid_file)
2405 {
2406 Error *err;
2407
2408 os_daemonize();
2409 rcu_disable_atfork();
2410
2411 if (pid_file && !qemu_write_pidfile(pid_file, &err)) {
2412 error_reportf_err(err, "cannot create PID file: ");
2413 exit(1);
2414 }
2415
2416 qemu_unlink_pidfile_notifier.notify = qemu_unlink_pidfile;
2417 qemu_add_exit_notifier(&qemu_unlink_pidfile_notifier);
2418 }
2419
2420 static void qemu_init_displays(void)
2421 {
2422 DisplayState *ds;
2423
2424 /* init local displays */
2425 ds = init_displaystate();
2426 qemu_display_init(ds, &dpy);
2427
2428 /* must be after terminal init, SDL library changes signal handlers */
2429 os_setup_signal_handling();
2430
2431 /* init remote displays */
2432 #ifdef CONFIG_VNC
2433 qemu_opts_foreach(qemu_find_opts("vnc"),
2434 vnc_init_func, NULL, &error_fatal);
2435 #endif
2436
2437 if (using_spice) {
2438 qemu_spice.display_init();
2439 }
2440 }
2441
2442 static void qemu_init_board(void)
2443 {
2444 MachineClass *machine_class = MACHINE_GET_CLASS(current_machine);
2445
2446 if (machine_class->default_ram_id && current_machine->ram_size &&
2447 numa_uses_legacy_mem() && !current_machine->ram_memdev_id) {
2448 create_default_memdev(current_machine, mem_path);
2449 }
2450
2451 /* process plugin before CPUs are created, but once -smp has been parsed */
2452 qemu_plugin_load_list(&plugin_list, &error_fatal);
2453
2454 /* From here on we enter MACHINE_PHASE_INITIALIZED. */
2455 machine_run_board_init(current_machine);
2456
2457 /*
2458 * TODO To drop support for deprecated bogus if=..., move
2459 * drive_check_orphaned() here, replacing this call. Also drop
2460 * its deprecation warning, along with DriveInfo member
2461 * @claimed_by_board.
2462 */
2463 drive_mark_claimed_by_board();
2464
2465 realtime_init();
2466
2467 if (hax_enabled()) {
2468 /* FIXME: why isn't cpu_synchronize_all_post_init enough? */
2469 hax_sync_vcpus();
2470 }
2471 }
2472
2473 static void qemu_create_cli_devices(void)
2474 {
2475 soundhw_init();
2476
2477 qemu_opts_foreach(qemu_find_opts("fw_cfg"),
2478 parse_fw_cfg, fw_cfg_find(), &error_fatal);
2479
2480 /* init USB devices */
2481 if (machine_usb(current_machine)) {
2482 if (foreach_device_config(DEV_USB, usb_parse) < 0)
2483 exit(1);
2484 }
2485
2486 /* init generic devices */
2487 rom_set_order_override(FW_CFG_ORDER_OVERRIDE_DEVICE);
2488 qemu_opts_foreach(qemu_find_opts("device"),
2489 device_init_func, NULL, &error_fatal);
2490 rom_reset_order_override();
2491 }
2492
2493 static void qemu_machine_creation_done(void)
2494 {
2495 /* Did we create any drives that we failed to create a device for? */
2496 drive_check_orphaned();
2497
2498 /* Don't warn about the default network setup that you get if
2499 * no command line -net or -netdev options are specified. There
2500 * are two cases that we would otherwise complain about:
2501 * (1) board doesn't support a NIC but the implicit "-net nic"
2502 * requested one
2503 * (2) CONFIG_SLIRP not set, in which case the implicit "-net nic"
2504 * sets up a nic that isn't connected to anything.
2505 */
2506 if (!default_net && (!qtest_enabled() || has_defaults)) {
2507 net_check_clients();
2508 }
2509
2510 qdev_prop_check_globals();
2511
2512 qdev_machine_creation_done();
2513
2514 if (foreach_device_config(DEV_GDB, gdbserver_start) < 0) {
2515 exit(1);
2516 }
2517 }
2518
2519 void qmp_x_exit_preconfig(Error **errp)
2520 {
2521 if (phase_check(PHASE_MACHINE_INITIALIZED)) {
2522 error_setg(errp, "The command is permitted only before machine initialization");
2523 return;
2524 }
2525
2526 qemu_init_board();
2527 qemu_create_cli_devices();
2528 qemu_machine_creation_done();
2529
2530 if (loadvm) {
2531 Error *local_err = NULL;
2532 if (load_snapshot(loadvm, &local_err) < 0) {
2533 error_report_err(local_err);
2534 autostart = 0;
2535 exit(1);
2536 }
2537 }
2538 if (replay_mode != REPLAY_MODE_NONE) {
2539 replay_vmstate_init();
2540 }
2541
2542 if (incoming) {
2543 Error *local_err = NULL;
2544 if (strcmp(incoming, "defer") != 0) {
2545 qmp_migrate_incoming(incoming, &local_err);
2546 if (local_err) {
2547 error_reportf_err(local_err, "-incoming %s: ", incoming);
2548 exit(1);
2549 }
2550 }
2551 } else if (autostart) {
2552 qmp_cont(NULL);
2553 }
2554 }
2555
2556 void qemu_init(int argc, char **argv, char **envp)
2557 {
2558 QemuOpts *opts;
2559 QemuOpts *icount_opts = NULL, *accel_opts = NULL;
2560 QemuOptsList *olist;
2561 int optind;
2562 const char *optarg;
2563 MachineClass *machine_class;
2564 bool userconfig = true;
2565 FILE *vmstate_dump_file = NULL;
2566
2567 qemu_add_opts(&qemu_drive_opts);
2568 qemu_add_drive_opts(&qemu_legacy_drive_opts);
2569 qemu_add_drive_opts(&qemu_common_drive_opts);
2570 qemu_add_drive_opts(&qemu_drive_opts);
2571 qemu_add_drive_opts(&bdrv_runtime_opts);
2572 qemu_add_opts(&qemu_chardev_opts);
2573 qemu_add_opts(&qemu_device_opts);
2574 qemu_add_opts(&qemu_netdev_opts);
2575 qemu_add_opts(&qemu_nic_opts);
2576 qemu_add_opts(&qemu_net_opts);
2577 qemu_add_opts(&qemu_rtc_opts);
2578 qemu_add_opts(&qemu_global_opts);
2579 qemu_add_opts(&qemu_mon_opts);
2580 qemu_add_opts(&qemu_trace_opts);
2581 qemu_plugin_add_opts();
2582 qemu_add_opts(&qemu_option_rom_opts);
2583 qemu_add_opts(&qemu_machine_opts);
2584 qemu_add_opts(&qemu_accel_opts);
2585 qemu_add_opts(&qemu_mem_opts);
2586 qemu_add_opts(&qemu_smp_opts);
2587 qemu_add_opts(&qemu_boot_opts);
2588 qemu_add_opts(&qemu_add_fd_opts);
2589 qemu_add_opts(&qemu_object_opts);
2590 qemu_add_opts(&qemu_tpmdev_opts);
2591 qemu_add_opts(&qemu_overcommit_opts);
2592 qemu_add_opts(&qemu_msg_opts);
2593 qemu_add_opts(&qemu_name_opts);
2594 qemu_add_opts(&qemu_numa_opts);
2595 qemu_add_opts(&qemu_icount_opts);
2596 qemu_add_opts(&qemu_semihosting_config_opts);
2597 qemu_add_opts(&qemu_fw_cfg_opts);
2598 qemu_add_opts(&qemu_action_opts);
2599 module_call_init(MODULE_INIT_OPTS);
2600
2601 error_init(argv[0]);
2602 qemu_init_exec_dir(argv[0]);
2603
2604 qemu_init_subsystems();
2605
2606 /* first pass of option parsing */
2607 optind = 1;
2608 while (optind < argc) {
2609 if (argv[optind][0] != '-') {
2610 /* disk image */
2611 optind++;
2612 } else {
2613 const QEMUOption *popt;
2614
2615 popt = lookup_opt(argc, argv, &optarg, &optind);
2616 switch (popt->index) {
2617 case QEMU_OPTION_nouserconfig:
2618 userconfig = false;
2619 break;
2620 }
2621 }
2622 }
2623
2624 if (userconfig) {
2625 if (qemu_read_default_config_file() < 0) {
2626 exit(1);
2627 }
2628 }
2629
2630 /* second pass of option parsing */
2631 optind = 1;
2632 for(;;) {
2633 if (optind >= argc)
2634 break;
2635 if (argv[optind][0] != '-') {
2636 loc_set_cmdline(argv, optind, 1);
2637 drive_add(IF_DEFAULT, 0, argv[optind++], HD_OPTS);
2638 } else {
2639 const QEMUOption *popt;
2640
2641 popt = lookup_opt(argc, argv, &optarg, &optind);
2642 if (!(popt->arch_mask & arch_type)) {
2643 error_report("Option not supported for this target");
2644 exit(1);
2645 }
2646 switch(popt->index) {
2647 case QEMU_OPTION_cpu:
2648 /* hw initialization will check this */
2649 cpu_option = optarg;
2650 break;
2651 case QEMU_OPTION_hda:
2652 case QEMU_OPTION_hdb:
2653 case QEMU_OPTION_hdc:
2654 case QEMU_OPTION_hdd:
2655 drive_add(IF_DEFAULT, popt->index - QEMU_OPTION_hda, optarg,
2656 HD_OPTS);
2657 break;
2658 case QEMU_OPTION_blockdev:
2659 {
2660 Visitor *v;
2661 BlockdevOptionsQueueEntry *bdo;
2662
2663 v = qobject_input_visitor_new_str(optarg, "driver",
2664 &error_fatal);
2665
2666 bdo = g_new(BlockdevOptionsQueueEntry, 1);
2667 visit_type_BlockdevOptions(v, NULL, &bdo->bdo,
2668 &error_fatal);
2669 visit_free(v);
2670 loc_save(&bdo->loc);
2671 QSIMPLEQ_INSERT_TAIL(&bdo_queue, bdo, entry);
2672 break;
2673 }
2674 case QEMU_OPTION_drive:
2675 if (drive_def(optarg) == NULL) {
2676 exit(1);
2677 }
2678 break;
2679 case QEMU_OPTION_set:
2680 if (qemu_set_option(optarg) != 0)
2681 exit(1);
2682 break;
2683 case QEMU_OPTION_global:
2684 if (qemu_global_option(optarg) != 0)
2685 exit(1);
2686 break;
2687 case QEMU_OPTION_mtdblock:
2688 drive_add(IF_MTD, -1, optarg, MTD_OPTS);
2689 break;
2690 case QEMU_OPTION_sd:
2691 drive_add(IF_SD, -1, optarg, SD_OPTS);
2692 break;
2693 case QEMU_OPTION_pflash:
2694 drive_add(IF_PFLASH, -1, optarg, PFLASH_OPTS);
2695 break;
2696 case QEMU_OPTION_snapshot:
2697 {
2698 Error *blocker = NULL;
2699 snapshot = 1;
2700 error_setg(&blocker, QERR_REPLAY_NOT_SUPPORTED,
2701 "-snapshot");
2702 replay_add_blocker(blocker);
2703 }
2704 break;
2705 case QEMU_OPTION_numa:
2706 opts = qemu_opts_parse_noisily(qemu_find_opts("numa"),
2707 optarg, true);
2708 if (!opts) {
2709 exit(1);
2710 }
2711 break;
2712 case QEMU_OPTION_display:
2713 parse_display(optarg);
2714 break;
2715 case QEMU_OPTION_nographic:
2716 olist = qemu_find_opts("machine");
2717 qemu_opts_parse_noisily(olist, "graphics=off", false);
2718 nographic = true;
2719 dpy.type = DISPLAY_TYPE_NONE;
2720 break;
2721 case QEMU_OPTION_curses:
2722 #ifdef CONFIG_CURSES
2723 dpy.type = DISPLAY_TYPE_CURSES;
2724 #else
2725 error_report("curses or iconv support is disabled");
2726 exit(1);
2727 #endif
2728 break;
2729 case QEMU_OPTION_portrait:
2730 graphic_rotate = 90;
2731 break;
2732 case QEMU_OPTION_rotate:
2733 graphic_rotate = strtol(optarg, (char **) &optarg, 10);
2734 if (graphic_rotate != 0 && graphic_rotate != 90 &&
2735 graphic_rotate != 180 && graphic_rotate != 270) {
2736 error_report("only 90, 180, 270 deg rotation is available");
2737 exit(1);
2738 }
2739 break;
2740 case QEMU_OPTION_kernel:
2741 qemu_opts_set(qemu_find_opts("machine"), "kernel", optarg, &error_abort);
2742 break;
2743 case QEMU_OPTION_initrd:
2744 qemu_opts_set(qemu_find_opts("machine"), "initrd", optarg, &error_abort);
2745 break;
2746 case QEMU_OPTION_append:
2747 qemu_opts_set(qemu_find_opts("machine"), "append", optarg, &error_abort);
2748 break;
2749 case QEMU_OPTION_dtb:
2750 qemu_opts_set(qemu_find_opts("machine"), "dtb", optarg, &error_abort);
2751 break;
2752 case QEMU_OPTION_cdrom:
2753 drive_add(IF_DEFAULT, 2, optarg, CDROM_OPTS);
2754 break;
2755 case QEMU_OPTION_boot:
2756 opts = qemu_opts_parse_noisily(qemu_find_opts("boot-opts"),
2757 optarg, true);
2758 if (!opts) {
2759 exit(1);
2760 }
2761 break;
2762 case QEMU_OPTION_fda:
2763 case QEMU_OPTION_fdb:
2764 drive_add(IF_FLOPPY, popt->index - QEMU_OPTION_fda,
2765 optarg, FD_OPTS);
2766 break;
2767 case QEMU_OPTION_no_fd_bootchk:
2768 fd_bootchk = 0;
2769 break;
2770 case QEMU_OPTION_netdev:
2771 default_net = 0;
2772 if (net_client_parse(qemu_find_opts("netdev"), optarg) == -1) {
2773 exit(1);
2774 }
2775 break;
2776 case QEMU_OPTION_nic:
2777 default_net = 0;
2778 if (net_client_parse(qemu_find_opts("nic"), optarg) == -1) {
2779 exit(1);
2780 }
2781 break;
2782 case QEMU_OPTION_net:
2783 default_net = 0;
2784 if (net_client_parse(qemu_find_opts("net"), optarg) == -1) {
2785 exit(1);
2786 }
2787 break;
2788 #ifdef CONFIG_LIBISCSI
2789 case QEMU_OPTION_iscsi:
2790 opts = qemu_opts_parse_noisily(qemu_find_opts("iscsi"),
2791 optarg, false);
2792 if (!opts) {
2793 exit(1);
2794 }
2795 break;
2796 #endif
2797 case QEMU_OPTION_audio_help:
2798 audio_legacy_help();
2799 exit (0);
2800 break;
2801 case QEMU_OPTION_audiodev:
2802 audio_parse_option(optarg);
2803 break;
2804 case QEMU_OPTION_soundhw:
2805 select_soundhw (optarg);
2806 break;
2807 case QEMU_OPTION_h:
2808 help(0);
2809 break;
2810 case QEMU_OPTION_version:
2811 version();
2812 exit(0);
2813 break;
2814 case QEMU_OPTION_m:
2815 opts = qemu_opts_parse_noisily(qemu_find_opts("memory"),
2816 optarg, true);
2817 if (!opts) {
2818 exit(EXIT_FAILURE);
2819 }
2820 break;
2821 #ifdef CONFIG_TPM
2822 case QEMU_OPTION_tpmdev:
2823 if (tpm_config_parse(qemu_find_opts("tpmdev"), optarg) < 0) {
2824 exit(1);
2825 }
2826 break;
2827 #endif
2828 case QEMU_OPTION_mempath:
2829 mem_path = optarg;
2830 break;
2831 case QEMU_OPTION_mem_prealloc:
2832 mem_prealloc = 1;
2833 break;
2834 case QEMU_OPTION_d:
2835 log_mask = optarg;
2836 break;
2837 case QEMU_OPTION_D:
2838 log_file = optarg;
2839 break;
2840 case QEMU_OPTION_DFILTER:
2841 qemu_set_dfilter_ranges(optarg, &error_fatal);
2842 break;
2843 case QEMU_OPTION_seed:
2844 qemu_guest_random_seed_main(optarg, &error_fatal);
2845 break;
2846 case QEMU_OPTION_s:
2847 add_device_config(DEV_GDB, "tcp::" DEFAULT_GDBSTUB_PORT);
2848 break;
2849 case QEMU_OPTION_gdb:
2850 add_device_config(DEV_GDB, optarg);
2851 break;
2852 case QEMU_OPTION_L:
2853 if (is_help_option(optarg)) {
2854 list_data_dirs = true;
2855 } else {
2856 qemu_add_data_dir(g_strdup(optarg));
2857 }
2858 break;
2859 case QEMU_OPTION_bios:
2860 qemu_opts_set(qemu_find_opts("machine"), "firmware", optarg, &error_abort);
2861 break;
2862 case QEMU_OPTION_singlestep:
2863 singlestep = 1;
2864 break;
2865 case QEMU_OPTION_S:
2866 autostart = 0;
2867 break;
2868 case QEMU_OPTION_k:
2869 keyboard_layout = optarg;
2870 break;
2871 case QEMU_OPTION_vga:
2872 vga_model = optarg;
2873 default_vga = 0;
2874 break;
2875 case QEMU_OPTION_g:
2876 {
2877 const char *p;
2878 int w, h, depth;
2879 p = optarg;
2880 w = strtol(p, (char **)&p, 10);
2881 if (w <= 0) {
2882 graphic_error:
2883 error_report("invalid resolution or depth");
2884 exit(1);
2885 }
2886 if (*p != 'x')
2887 goto graphic_error;
2888 p++;
2889 h = strtol(p, (char **)&p, 10);
2890 if (h <= 0)
2891 goto graphic_error;
2892 if (*p == 'x') {
2893 p++;
2894 depth = strtol(p, (char **)&p, 10);
2895 if (depth != 1 && depth != 2 && depth != 4 &&
2896 depth != 8 && depth != 15 && depth != 16 &&
2897 depth != 24 && depth != 32)
2898 goto graphic_error;
2899 } else if (*p == '\0') {
2900 depth = graphic_depth;
2901 } else {
2902 goto graphic_error;
2903 }
2904
2905 graphic_width = w;
2906 graphic_height = h;
2907 graphic_depth = depth;
2908 }
2909 break;
2910 case QEMU_OPTION_echr:
2911 {
2912 char *r;
2913 term_escape_char = strtol(optarg, &r, 0);
2914 if (r == optarg)
2915 printf("Bad argument to echr\n");
2916 break;
2917 }
2918 case QEMU_OPTION_monitor:
2919 default_monitor = 0;
2920 if (strncmp(optarg, "none", 4)) {
2921 monitor_parse(optarg, "readline", false);
2922 }
2923 break;
2924 case QEMU_OPTION_qmp:
2925 monitor_parse(optarg, "control", false);
2926 default_monitor = 0;
2927 break;
2928 case QEMU_OPTION_qmp_pretty:
2929 monitor_parse(optarg, "control", true);
2930 default_monitor = 0;
2931 break;
2932 case QEMU_OPTION_mon:
2933 opts = qemu_opts_parse_noisily(qemu_find_opts("mon"), optarg,
2934 true);
2935 if (!opts) {
2936 exit(1);
2937 }
2938 default_monitor = 0;
2939 break;
2940 case QEMU_OPTION_chardev:
2941 opts = qemu_opts_parse_noisily(qemu_find_opts("chardev"),
2942 optarg, true);
2943 if (!opts) {
2944 exit(1);
2945 }
2946 break;
2947 case QEMU_OPTION_fsdev:
2948 olist = qemu_find_opts("fsdev");
2949 if (!olist) {
2950 error_report("fsdev support is disabled");
2951 exit(1);
2952 }
2953 opts = qemu_opts_parse_noisily(olist, optarg, true);
2954 if (!opts) {
2955 exit(1);
2956 }
2957 break;
2958 case QEMU_OPTION_virtfs: {
2959 QemuOpts *fsdev;
2960 QemuOpts *device;
2961 const char *writeout, *sock_fd, *socket, *path, *security_model,
2962 *multidevs;
2963
2964 olist = qemu_find_opts("virtfs");
2965 if (!olist) {
2966 error_report("virtfs support is disabled");
2967 exit(1);
2968 }
2969 opts = qemu_opts_parse_noisily(olist, optarg, true);
2970 if (!opts) {
2971 exit(1);
2972 }
2973
2974 if (qemu_opt_get(opts, "fsdriver") == NULL ||
2975 qemu_opt_get(opts, "mount_tag") == NULL) {
2976 error_report("Usage: -virtfs fsdriver,mount_tag=tag");
2977 exit(1);
2978 }
2979 fsdev = qemu_opts_create(qemu_find_opts("fsdev"),
2980 qemu_opts_id(opts) ?:
2981 qemu_opt_get(opts, "mount_tag"),
2982 1, NULL);
2983 if (!fsdev) {
2984 error_report("duplicate or invalid fsdev id: %s",
2985 qemu_opt_get(opts, "mount_tag"));
2986 exit(1);
2987 }
2988
2989 writeout = qemu_opt_get(opts, "writeout");
2990 if (writeout) {
2991 #ifdef CONFIG_SYNC_FILE_RANGE
2992 qemu_opt_set(fsdev, "writeout", writeout, &error_abort);
2993 #else
2994 error_report("writeout=immediate not supported "
2995 "on this platform");
2996 exit(1);
2997 #endif
2998 }
2999 qemu_opt_set(fsdev, "fsdriver",
3000 qemu_opt_get(opts, "fsdriver"), &error_abort);
3001 path = qemu_opt_get(opts, "path");
3002 if (path) {
3003 qemu_opt_set(fsdev, "path", path, &error_abort);
3004 }
3005 security_model = qemu_opt_get(opts, "security_model");
3006 if (security_model) {
3007 qemu_opt_set(fsdev, "security_model", security_model,
3008 &error_abort);
3009 }
3010 socket = qemu_opt_get(opts, "socket");
3011 if (socket) {
3012 qemu_opt_set(fsdev, "socket", socket, &error_abort);
3013 }
3014 sock_fd = qemu_opt_get(opts, "sock_fd");
3015 if (sock_fd) {
3016 qemu_opt_set(fsdev, "sock_fd", sock_fd, &error_abort);
3017 }
3018
3019 qemu_opt_set_bool(fsdev, "readonly",
3020 qemu_opt_get_bool(opts, "readonly", 0),
3021 &error_abort);
3022 multidevs = qemu_opt_get(opts, "multidevs");
3023 if (multidevs) {
3024 qemu_opt_set(fsdev, "multidevs", multidevs, &error_abort);
3025 }
3026 device = qemu_opts_create(qemu_find_opts("device"), NULL, 0,
3027 &error_abort);
3028 qemu_opt_set(device, "driver", "virtio-9p-pci", &error_abort);
3029 qemu_opt_set(device, "fsdev",
3030 qemu_opts_id(fsdev), &error_abort);
3031 qemu_opt_set(device, "mount_tag",
3032 qemu_opt_get(opts, "mount_tag"), &error_abort);
3033 break;
3034 }
3035 case QEMU_OPTION_serial:
3036 add_device_config(DEV_SERIAL, optarg);
3037 default_serial = 0;
3038 if (strncmp(optarg, "mon:", 4) == 0) {
3039 default_monitor = 0;
3040 }
3041 break;
3042 case QEMU_OPTION_watchdog:
3043 if (watchdog) {
3044 error_report("only one watchdog option may be given");
3045 exit(1);
3046 }
3047 watchdog = optarg;
3048 break;
3049 case QEMU_OPTION_action:
3050 olist = qemu_find_opts("action");
3051 if (!qemu_opts_parse_noisily(olist, optarg, false)) {
3052 exit(1);
3053 }
3054 break;
3055 case QEMU_OPTION_watchdog_action:
3056 if (select_watchdog_action(optarg) == -1) {
3057 error_report("unknown -watchdog-action parameter");
3058 exit(1);
3059 }
3060 break;
3061 case QEMU_OPTION_parallel:
3062 add_device_config(DEV_PARALLEL, optarg);
3063 default_parallel = 0;
3064 if (strncmp(optarg, "mon:", 4) == 0) {
3065 default_monitor = 0;
3066 }
3067 break;
3068 case QEMU_OPTION_debugcon:
3069 add_device_config(DEV_DEBUGCON, optarg);
3070 break;
3071 case QEMU_OPTION_loadvm:
3072 loadvm = optarg;
3073 break;
3074 case QEMU_OPTION_full_screen:
3075 dpy.has_full_screen = true;
3076 dpy.full_screen = true;
3077 break;
3078 case QEMU_OPTION_alt_grab:
3079 alt_grab = 1;
3080 break;
3081 case QEMU_OPTION_ctrl_grab:
3082 ctrl_grab = 1;
3083 break;
3084 case QEMU_OPTION_no_quit:
3085 dpy.has_window_close = true;
3086 dpy.window_close = false;
3087 break;
3088 case QEMU_OPTION_sdl:
3089 #ifdef CONFIG_SDL
3090 dpy.type = DISPLAY_TYPE_SDL;
3091 break;
3092 #else
3093 error_report("SDL support is disabled");
3094 exit(1);
3095 #endif
3096 case QEMU_OPTION_pidfile:
3097 pid_file = optarg;
3098 break;
3099 case QEMU_OPTION_win2k_hack:
3100 win2k_install_hack = 1;
3101 break;
3102 case QEMU_OPTION_acpitable:
3103 opts = qemu_opts_parse_noisily(qemu_find_opts("acpi"),
3104 optarg, true);
3105 if (!opts) {
3106 exit(1);
3107 }
3108 acpi_table_add(opts, &error_fatal);
3109 break;
3110 case QEMU_OPTION_smbios:
3111 opts = qemu_opts_parse_noisily(qemu_find_opts("smbios"),
3112 optarg, false);
3113 if (!opts) {
3114 exit(1);
3115 }
3116 smbios_entry_add(opts, &error_fatal);
3117 break;
3118 case QEMU_OPTION_fwcfg:
3119 opts = qemu_opts_parse_noisily(qemu_find_opts("fw_cfg"),
3120 optarg, true);
3121 if (opts == NULL) {
3122 exit(1);
3123 }
3124 break;
3125 case QEMU_OPTION_preconfig:
3126 preconfig_requested = true;
3127 break;
3128 case QEMU_OPTION_enable_kvm:
3129 olist = qemu_find_opts("machine");
3130 qemu_opts_parse_noisily(olist, "accel=kvm", false);
3131 break;
3132 case QEMU_OPTION_M:
3133 case QEMU_OPTION_machine:
3134 olist = qemu_find_opts("machine");
3135 opts = qemu_opts_parse_noisily(olist, optarg, true);
3136 if (!opts) {
3137 exit(1);
3138 }
3139 break;
3140 case QEMU_OPTION_accel:
3141 accel_opts = qemu_opts_parse_noisily(qemu_find_opts("accel"),
3142 optarg, true);
3143 optarg = qemu_opt_get(accel_opts, "accel");
3144 if (!optarg || is_help_option(optarg)) {
3145 printf("Accelerators supported in QEMU binary:\n");
3146 GSList *el, *accel_list = object_class_get_list(TYPE_ACCEL,
3147 false);
3148 for (el = accel_list; el; el = el->next) {
3149 gchar *typename = g_strdup(object_class_get_name(
3150 OBJECT_CLASS(el->data)));
3151 /* omit qtest which is used for tests only */
3152 if (g_strcmp0(typename, ACCEL_CLASS_NAME("qtest")) &&
3153 g_str_has_suffix(typename, ACCEL_CLASS_SUFFIX)) {
3154 gchar **optname = g_strsplit(typename,
3155 ACCEL_CLASS_SUFFIX, 0);
3156 printf("%s\n", optname[0]);
3157 g_strfreev(optname);
3158 }
3159 g_free(typename);
3160 }
3161 g_slist_free(accel_list);
3162 exit(0);
3163 }
3164 break;
3165 case QEMU_OPTION_usb:
3166 olist = qemu_find_opts("machine");
3167 qemu_opts_parse_noisily(olist, "usb=on", false);
3168 break;
3169 case QEMU_OPTION_usbdevice:
3170 error_report("'-usbdevice' is deprecated, please use "
3171 "'-device usb-...' instead");
3172 olist = qemu_find_opts("machine");
3173 qemu_opts_parse_noisily(olist, "usb=on", false);
3174 add_device_config(DEV_USB, optarg);
3175 break;
3176 case QEMU_OPTION_device:
3177 if (!qemu_opts_parse_noisily(qemu_find_opts("device"),
3178 optarg, true)) {
3179 exit(1);
3180 }
3181 break;
3182 case QEMU_OPTION_smp:
3183 if (!qemu_opts_parse_noisily(qemu_find_opts("smp-opts"),
3184 optarg, true)) {
3185 exit(1);
3186 }
3187 break;
3188 case QEMU_OPTION_vnc:
3189 vnc_parse(optarg, &error_fatal);
3190 break;
3191 case QEMU_OPTION_no_acpi:
3192 olist = qemu_find_opts("machine");
3193 qemu_opts_parse_noisily(olist, "acpi=off", false);
3194 break;
3195 case QEMU_OPTION_no_hpet:
3196 olist = qemu_find_opts("machine");
3197 qemu_opts_parse_noisily(olist, "hpet=off", false);
3198 break;
3199 case QEMU_OPTION_no_reboot:
3200 olist = qemu_find_opts("action");
3201 qemu_opts_parse_noisily(olist, "reboot=shutdown", false);
3202 break;
3203 case QEMU_OPTION_no_shutdown:
3204 olist = qemu_find_opts("action");
3205 qemu_opts_parse_noisily(olist, "panic=pause,shutdown=pause", false);
3206 break;
3207 case QEMU_OPTION_uuid:
3208 if (qemu_uuid_parse(optarg, &qemu_uuid) < 0) {
3209 error_report("failed to parse UUID string: wrong format");
3210 exit(1);
3211 }
3212 qemu_uuid_set = true;
3213 break;
3214 case QEMU_OPTION_option_rom:
3215 if (nb_option_roms >= MAX_OPTION_ROMS) {
3216 error_report("too many option ROMs");
3217 exit(1);
3218 }
3219 opts = qemu_opts_parse_noisily(qemu_find_opts("option-rom"),
3220 optarg, true);
3221 if (!opts) {
3222 exit(1);
3223 }
3224 option_rom[nb_option_roms].name = qemu_opt_get(opts, "romfile");
3225 option_rom[nb_option_roms].bootindex =
3226 qemu_opt_get_number(opts, "bootindex", -1);
3227 if (!option_rom[nb_option_roms].name) {
3228 error_report("Option ROM file is not specified");
3229 exit(1);
3230 }
3231 nb_option_roms++;
3232 break;
3233 case QEMU_OPTION_semihosting:
3234 qemu_semihosting_enable();
3235 break;
3236 case QEMU_OPTION_semihosting_config:
3237 if (qemu_semihosting_config_options(optarg) != 0) {
3238 exit(1);
3239 }
3240 break;
3241 case QEMU_OPTION_name:
3242 opts = qemu_opts_parse_noisily(qemu_find_opts("name"),
3243 optarg, true);
3244 if (!opts) {
3245 exit(1);
3246 }
3247 /* Capture guest name if -msg guest-name is used later */
3248 error_guest_name = qemu_opt_get(opts, "guest");
3249 break;
3250 case QEMU_OPTION_prom_env:
3251 if (nb_prom_envs >= MAX_PROM_ENVS) {
3252 error_report("too many prom variables");
3253 exit(1);
3254 }
3255 prom_envs[nb_prom_envs] = optarg;
3256 nb_prom_envs++;
3257 break;
3258 case QEMU_OPTION_old_param:
3259 old_param = 1;
3260 break;
3261 case QEMU_OPTION_rtc:
3262 opts = qemu_opts_parse_noisily(qemu_find_opts("rtc"), optarg,
3263 false);
3264 if (!opts) {
3265 exit(1);
3266 }
3267 break;
3268 case QEMU_OPTION_icount:
3269 icount_opts = qemu_opts_parse_noisily(qemu_find_opts("icount"),
3270 optarg, true);
3271 if (!icount_opts) {
3272 exit(1);
3273 }
3274 break;
3275 case QEMU_OPTION_incoming:
3276 if (!incoming) {
3277 runstate_set(RUN_STATE_INMIGRATE);
3278 }
3279 incoming = optarg;
3280 break;
3281 case QEMU_OPTION_only_migratable:
3282 only_migratable = 1;
3283 break;
3284 case QEMU_OPTION_nodefaults:
3285 has_defaults = 0;
3286 break;
3287 case QEMU_OPTION_xen_domid:
3288 if (!(xen_available())) {
3289 error_report("Option not supported for this target");
3290 exit(1);
3291 }
3292 xen_domid = atoi(optarg);
3293 break;
3294 case QEMU_OPTION_xen_attach:
3295 if (!(xen_available())) {
3296 error_report("Option not supported for this target");
3297 exit(1);
3298 }
3299 xen_mode = XEN_ATTACH;
3300 break;
3301 case QEMU_OPTION_xen_domid_restrict:
3302 if (!(xen_available())) {
3303 error_report("Option not supported for this target");
3304 exit(1);
3305 }
3306 xen_domid_restrict = true;
3307 break;
3308 case QEMU_OPTION_trace:
3309 trace_opt_parse(optarg);
3310 break;
3311 case QEMU_OPTION_plugin:
3312 qemu_plugin_opt_parse(optarg, &plugin_list);
3313 break;
3314 case QEMU_OPTION_readconfig:
3315 {
3316 int ret = qemu_read_config_file(optarg);
3317 if (ret < 0) {
3318 error_report("read config %s: %s", optarg,
3319 strerror(-ret));
3320 exit(1);
3321 }
3322 break;
3323 }
3324 case QEMU_OPTION_spice:
3325 olist = qemu_find_opts_err("spice", NULL);
3326 if (!olist) {
3327 ui_module_load_one("spice-core");
3328 olist = qemu_find_opts("spice");
3329 }
3330 if (!olist) {
3331 error_report("spice support is disabled");
3332 exit(1);
3333 }
3334 opts = qemu_opts_parse_noisily(olist, optarg, false);
3335 if (!opts) {
3336 exit(1);
3337 }
3338 display_remote++;
3339 break;
3340 case QEMU_OPTION_writeconfig:
3341 {
3342 FILE *fp;
3343 if (strcmp(optarg, "-") == 0) {
3344 fp = stdout;
3345 } else {
3346 fp = fopen(optarg, "w");
3347 if (fp == NULL) {
3348 error_report("open %s: %s", optarg,
3349 strerror(errno));
3350 exit(1);
3351 }
3352 }
3353 qemu_config_write(fp);
3354 if (fp != stdout) {
3355 fclose(fp);