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tests/acceptance/virtiofs_submounts: use workdir property
[qemu/ar7.git] / softmmu / vl.c
blob2bf94ece9c973fd458fa44b21cae2e4b14d551ef
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 "qemu/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 message_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);
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");
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 /*
1730 * Allocation of large amounts of memory may delay
1731 * chardev initialization for too long, and trigger timeouts
1732 * on software that waits for a monitor socket to be created
1733 * (e.g. libvirt).
1734 */
1735 if (g_str_has_prefix(type, "memory-backend-")) {
1736 return false;
1737 }
1738
1739 return true;
1740 }
1741
1742 static void qemu_apply_machine_options(void)
1743 {
1744 MachineClass *machine_class = MACHINE_GET_CLASS(current_machine);
1745 QemuOpts *machine_opts = qemu_get_machine_opts();
1746 const char *boot_order = NULL;
1747 const char *boot_once = NULL;
1748 QemuOpts *opts;
1749
1750 qemu_opt_foreach(machine_opts, machine_set_property, current_machine,
1751 &error_fatal);
1752 current_machine->ram_size = ram_size;
1753 current_machine->maxram_size = maxram_size;
1754 current_machine->ram_slots = ram_slots;
1755
1756 opts = qemu_opts_find(qemu_find_opts("boot-opts"), NULL);
1757 if (opts) {
1758 boot_order = qemu_opt_get(opts, "order");
1759 if (boot_order) {
1760 validate_bootdevices(boot_order, &error_fatal);
1761 }
1762
1763 boot_once = qemu_opt_get(opts, "once");
1764 if (boot_once) {
1765 validate_bootdevices(boot_once, &error_fatal);
1766 }
1767
1768 boot_menu = qemu_opt_get_bool(opts, "menu", boot_menu);
1769 boot_strict = qemu_opt_get_bool(opts, "strict", false);
1770 }
1771
1772 if (!boot_order) {
1773 boot_order = machine_class->default_boot_order;
1774 }
1775
1776 current_machine->boot_order = boot_order;
1777 current_machine->boot_once = boot_once;
1778
1779 if (semihosting_enabled() && !semihosting_get_argc()) {
1780 const char *kernel_filename = qemu_opt_get(machine_opts, "kernel");
1781 const char *kernel_cmdline = qemu_opt_get(machine_opts, "append") ?: "";
1782 /* fall back to the -kernel/-append */
1783 semihosting_arg_fallback(kernel_filename, kernel_cmdline);
1784 }
1785 }
1786
1787 static void qemu_create_early_backends(void)
1788 {
1789 MachineClass *machine_class = MACHINE_GET_CLASS(current_machine);
1790
1791 if ((alt_grab || ctrl_grab) && dpy.type != DISPLAY_TYPE_SDL) {
1792 error_report("-alt-grab and -ctrl-grab are only valid "
1793 "for SDL, ignoring option");
1794 }
1795 if (dpy.has_window_close &&
1796 (dpy.type != DISPLAY_TYPE_GTK && dpy.type != DISPLAY_TYPE_SDL)) {
1797 error_report("-no-quit is only valid for GTK and SDL, "
1798 "ignoring option");
1799 }
1800
1801 qemu_display_early_init(&dpy);
1802 qemu_console_early_init();
1803
1804 if (dpy.has_gl && dpy.gl != DISPLAYGL_MODE_OFF && display_opengl == 0) {
1805 #if defined(CONFIG_OPENGL)
1806 error_report("OpenGL is not supported by the display");
1807 #else
1808 error_report("OpenGL support is disabled");
1809 #endif
1810 exit(1);
1811 }
1812
1813 qemu_opts_foreach(qemu_find_opts("object"),
1814 user_creatable_add_opts_foreach,
1815 object_create_early, &error_fatal);
1816
1817 /* spice needs the timers to be initialized by this point */
1818 /* spice must initialize before audio as it changes the default auiodev */
1819 /* spice must initialize before chardevs (for spicevmc and spiceport) */
1820 qemu_spice.init();
1821
1822 qemu_opts_foreach(qemu_find_opts("chardev"),
1823 chardev_init_func, NULL, &error_fatal);
1824
1825 #ifdef CONFIG_VIRTFS
1826 qemu_opts_foreach(qemu_find_opts("fsdev"),
1827 fsdev_init_func, NULL, &error_fatal);
1828 #endif
1829
1830 /*
1831 * Note: we need to create audio and block backends before
1832 * machine_set_property(), so machine properties can refer to
1833 * them.
1834 */
1835 configure_blockdev(&bdo_queue, machine_class, snapshot);
1836 audio_init_audiodevs();
1837 }
1838
1839
1840 /*
1841 * The remainder of object creation happens after the
1842 * creation of chardev, fsdev, net clients and device data types.
1843 */
1844 static bool object_create_late(const char *type, QemuOpts *opts)
1845 {
1846 return !object_create_early(type, opts);
1847 }
1848
1849 static void qemu_create_late_backends(void)
1850 {
1851 if (qtest_chrdev) {
1852 qtest_server_init(qtest_chrdev, qtest_log, &error_fatal);
1853 }
1854
1855 net_init_clients(&error_fatal);
1856
1857 qemu_opts_foreach(qemu_find_opts("object"),
1858 user_creatable_add_opts_foreach,
1859 object_create_late, &error_fatal);
1860
1861 if (tpm_init() < 0) {
1862 exit(1);
1863 }
1864
1865 qemu_opts_foreach(qemu_find_opts("mon"),
1866 mon_init_func, NULL, &error_fatal);
1867
1868 if (foreach_device_config(DEV_SERIAL, serial_parse) < 0)
1869 exit(1);
1870 if (foreach_device_config(DEV_PARALLEL, parallel_parse) < 0)
1871 exit(1);
1872 if (foreach_device_config(DEV_DEBUGCON, debugcon_parse) < 0)
1873 exit(1);
1874
1875 /* now chardevs have been created we may have semihosting to connect */
1876 qemu_semihosting_connect_chardevs();
1877 qemu_semihosting_console_init();
1878 }
1879
1880 static bool have_custom_ram_size(void)
1881 {
1882 QemuOpts *opts = qemu_find_opts_singleton("memory");
1883 return !!qemu_opt_get_size(opts, "size", 0);
1884 }
1885
1886 static void qemu_resolve_machine_memdev(void)
1887 {
1888 if (current_machine->ram_memdev_id) {
1889 Object *backend;
1890 ram_addr_t backend_size;
1891
1892 backend = object_resolve_path_type(current_machine->ram_memdev_id,
1893 TYPE_MEMORY_BACKEND, NULL);
1894 if (!backend) {
1895 error_report("Memory backend '%s' not found",
1896 current_machine->ram_memdev_id);
1897 exit(EXIT_FAILURE);
1898 }
1899 backend_size = object_property_get_uint(backend, "size", &error_abort);
1900 if (have_custom_ram_size() && backend_size != ram_size) {
1901 error_report("Size specified by -m option must match size of "
1902 "explicitly specified 'memory-backend' property");
1903 exit(EXIT_FAILURE);
1904 }
1905 if (mem_path) {
1906 error_report("'-mem-path' can't be used together with"
1907 "'-machine memory-backend'");
1908 exit(EXIT_FAILURE);
1909 }
1910 ram_size = backend_size;
1911 }
1912
1913 if (!xen_enabled()) {
1914 /* On 32-bit hosts, QEMU is limited by virtual address space */
1915 if (ram_size > (2047 << 20) && HOST_LONG_BITS == 32) {
1916 error_report("at most 2047 MB RAM can be simulated");
1917 exit(1);
1918 }
1919 }
1920 }
1921
1922 static void set_memory_options(MachineClass *mc)
1923 {
1924 uint64_t sz;
1925 const char *mem_str;
1926 const ram_addr_t default_ram_size = mc->default_ram_size;
1927 QemuOpts *opts = qemu_find_opts_singleton("memory");
1928 Location loc;
1929
1930 loc_push_none(&loc);
1931 qemu_opts_loc_restore(opts);
1932
1933 sz = 0;
1934 mem_str = qemu_opt_get(opts, "size");
1935 if (mem_str) {
1936 if (!*mem_str) {
1937 error_report("missing 'size' option value");
1938 exit(EXIT_FAILURE);
1939 }
1940
1941 sz = qemu_opt_get_size(opts, "size", ram_size);
1942
1943 /* Fix up legacy suffix-less format */
1944 if (g_ascii_isdigit(mem_str[strlen(mem_str) - 1])) {
1945 uint64_t overflow_check = sz;
1946
1947 sz *= MiB;
1948 if (sz / MiB != overflow_check) {
1949 error_report("too large 'size' option value");
1950 exit(EXIT_FAILURE);
1951 }
1952 }
1953 }
1954
1955 /* backward compatibility behaviour for case "-m 0" */
1956 if (sz == 0) {
1957 sz = default_ram_size;
1958 }
1959
1960 sz = QEMU_ALIGN_UP(sz, 8192);
1961 if (mc->fixup_ram_size) {
1962 sz = mc->fixup_ram_size(sz);
1963 }
1964 ram_size = sz;
1965 if (ram_size != sz) {
1966 error_report("ram size too large");
1967 exit(EXIT_FAILURE);
1968 }
1969
1970 /* store value for the future use */
1971 qemu_opt_set_number(opts, "size", ram_size, &error_abort);
1972 maxram_size = ram_size;
1973
1974 if (qemu_opt_get(opts, "maxmem")) {
1975 uint64_t slots;
1976
1977 sz = qemu_opt_get_size(opts, "maxmem", 0);
1978 slots = qemu_opt_get_number(opts, "slots", 0);
1979 if (sz < ram_size) {
1980 error_report("invalid value of -m option maxmem: "
1981 "maximum memory size (0x%" PRIx64 ") must be at least "
1982 "the initial memory size (0x" RAM_ADDR_FMT ")",
1983 sz, ram_size);
1984 exit(EXIT_FAILURE);
1985 } else if (slots && sz == ram_size) {
1986 error_report("invalid value of -m option maxmem: "
1987 "memory slots were specified but maximum memory size "
1988 "(0x%" PRIx64 ") is equal to the initial memory size "
1989 "(0x" RAM_ADDR_FMT ")", sz, ram_size);
1990 exit(EXIT_FAILURE);
1991 }
1992
1993 maxram_size = sz;
1994 ram_slots = slots;
1995 } else if (qemu_opt_get(opts, "slots")) {
1996 error_report("invalid -m option value: missing 'maxmem' option");
1997 exit(EXIT_FAILURE);
1998 }
1999
2000 loc_pop(&loc);
2001 }
2002
2003 static void qemu_create_machine(MachineClass *machine_class)
2004 {
2005 object_set_machine_compat_props(machine_class->compat_props);
2006
2007 set_memory_options(machine_class);
2008
2009 current_machine = MACHINE(object_new_with_class(OBJECT_CLASS(machine_class)));
2010 if (machine_help_func(qemu_get_machine_opts(), current_machine)) {
2011 exit(0);
2012 }
2013 object_property_add_child(object_get_root(), "machine",
2014 OBJECT(current_machine));
2015 object_property_add_child(container_get(OBJECT(current_machine),
2016 "/unattached"),
2017 "sysbus", OBJECT(sysbus_get_default()));
2018
2019 if (machine_class->minimum_page_bits) {
2020 if (!set_preferred_target_page_bits(machine_class->minimum_page_bits)) {
2021 /* This would be a board error: specifying a minimum smaller than
2022 * a target's compile-time fixed setting.
2023 */
2024 g_assert_not_reached();
2025 }
2026 }
2027
2028 cpu_exec_init_all();
2029 page_size_init();
2030
2031 if (machine_class->hw_version) {
2032 qemu_set_hw_version(machine_class->hw_version);
2033 }
2034
2035 machine_smp_parse(current_machine,
2036 qemu_opts_find(qemu_find_opts("smp-opts"), NULL), &error_fatal);
2037
2038 /*
2039 * Get the default machine options from the machine if it is not already
2040 * specified either by the configuration file or by the command line.
2041 */
2042 if (machine_class->default_machine_opts) {
2043 qemu_opts_set_defaults(qemu_find_opts("machine"),
2044 machine_class->default_machine_opts, 0);
2045 }
2046 }
2047
2048 static int global_init_func(void *opaque, QemuOpts *opts, Error **errp)
2049 {
2050 GlobalProperty *g;
2051
2052 g = g_malloc0(sizeof(*g));
2053 g->driver = qemu_opt_get(opts, "driver");
2054 g->property = qemu_opt_get(opts, "property");
2055 g->value = qemu_opt_get(opts, "value");
2056 qdev_prop_register_global(g);
2057 return 0;
2058 }
2059
2060 static int qemu_read_default_config_file(void)
2061 {
2062 int ret;
2063 g_autofree char *file = get_relocated_path(CONFIG_QEMU_CONFDIR "/qemu.conf");
2064
2065 ret = qemu_read_config_file(file);
2066 if (ret < 0 && ret != -ENOENT) {
2067 return ret;
2068 }
2069
2070 return 0;
2071 }
2072
2073 static int qemu_set_option(const char *str)
2074 {
2075 Error *local_err = NULL;
2076 char group[64], id[64], arg[64];
2077 QemuOptsList *list;
2078 QemuOpts *opts;
2079 int rc, offset;
2080
2081 rc = sscanf(str, "%63[^.].%63[^.].%63[^=]%n", group, id, arg, &offset);
2082 if (rc < 3 || str[offset] != '=') {
2083 error_report("can't parse: \"%s\"", str);
2084 return -1;
2085 }
2086
2087 list = qemu_find_opts(group);
2088 if (list == NULL) {
2089 return -1;
2090 }
2091
2092 opts = qemu_opts_find(list, id);
2093 if (!opts) {
2094 error_report("there is no %s \"%s\" defined",
2095 list->name, id);
2096 return -1;
2097 }
2098
2099 if (!qemu_opt_set(opts, arg, str + offset + 1, &local_err)) {
2100 error_report_err(local_err);
2101 return -1;
2102 }
2103 return 0;
2104 }
2105
2106 static void user_register_global_props(void)
2107 {
2108 qemu_opts_foreach(qemu_find_opts("global"),
2109 global_init_func, NULL, NULL);
2110 }
2111
2112 static int do_configure_icount(void *opaque, QemuOpts *opts, Error **errp)
2113 {
2114 icount_configure(opts, errp);
2115 return 0;
2116 }
2117
2118 static int accelerator_set_property(void *opaque,
2119 const char *name, const char *value,
2120 Error **errp)
2121 {
2122 return object_parse_property_opt(opaque, name, value, "accel", errp);
2123 }
2124
2125 static int do_configure_accelerator(void *opaque, QemuOpts *opts, Error **errp)
2126 {
2127 bool *p_init_failed = opaque;
2128 const char *acc = qemu_opt_get(opts, "accel");
2129 AccelClass *ac = accel_find(acc);
2130 AccelState *accel;
2131 int ret;
2132 bool qtest_with_kvm;
2133
2134 qtest_with_kvm = g_str_equal(acc, "kvm") && qtest_chrdev != NULL;
2135
2136 if (!ac) {
2137 *p_init_failed = true;
2138 if (!qtest_with_kvm) {
2139 error_report("invalid accelerator %s", acc);
2140 }
2141 return 0;
2142 }
2143 accel = ACCEL(object_new_with_class(OBJECT_CLASS(ac)));
2144 object_apply_compat_props(OBJECT(accel));
2145 qemu_opt_foreach(opts, accelerator_set_property,
2146 accel,
2147 &error_fatal);
2148
2149 ret = accel_init_machine(accel, current_machine);
2150 if (ret < 0) {
2151 *p_init_failed = true;
2152 if (!qtest_with_kvm || ret != -ENOENT) {
2153 error_report("failed to initialize %s: %s", acc, strerror(-ret));
2154 }
2155 return 0;
2156 }
2157
2158 return 1;
2159 }
2160
2161 static void configure_accelerators(const char *progname)
2162 {
2163 const char *accelerators;
2164 bool init_failed = false;
2165
2166 qemu_opts_foreach(qemu_find_opts("icount"),
2167 do_configure_icount, NULL, &error_fatal);
2168
2169 accelerators = qemu_opt_get(qemu_get_machine_opts(), "accel");
2170 if (QTAILQ_EMPTY(&qemu_accel_opts.head)) {
2171 char **accel_list, **tmp;
2172
2173 if (accelerators == NULL) {
2174 /* Select the default accelerator */
2175 bool have_tcg = accel_find("tcg");
2176 bool have_kvm = accel_find("kvm");
2177
2178 if (have_tcg && have_kvm) {
2179 if (g_str_has_suffix(progname, "kvm")) {
2180 /* If the program name ends with "kvm", we prefer KVM */
2181 accelerators = "kvm:tcg";
2182 } else {
2183 accelerators = "tcg:kvm";
2184 }
2185 } else if (have_kvm) {
2186 accelerators = "kvm";
2187 } else if (have_tcg) {
2188 accelerators = "tcg";
2189 } else {
2190 error_report("No accelerator selected and"
2191 " no default accelerator available");
2192 exit(1);
2193 }
2194 }
2195 accel_list = g_strsplit(accelerators, ":", 0);
2196
2197 for (tmp = accel_list; *tmp; tmp++) {
2198 /*
2199 * Filter invalid accelerators here, to prevent obscenities
2200 * such as "-machine accel=tcg,,thread=single".
2201 */
2202 if (accel_find(*tmp)) {
2203 qemu_opts_parse_noisily(qemu_find_opts("accel"), *tmp, true);
2204 } else {
2205 init_failed = true;
2206 error_report("invalid accelerator %s", *tmp);
2207 }
2208 }
2209 g_strfreev(accel_list);
2210 } else {
2211 if (accelerators != NULL) {
2212 error_report("The -accel and \"-machine accel=\" options are incompatible");
2213 exit(1);
2214 }
2215 }
2216
2217 if (!qemu_opts_foreach(qemu_find_opts("accel"),
2218 do_configure_accelerator, &init_failed, &error_fatal)) {
2219 if (!init_failed) {
2220 error_report("no accelerator found");
2221 }
2222 exit(1);
2223 }
2224
2225 if (init_failed && !qtest_chrdev) {
2226 AccelClass *ac = ACCEL_GET_CLASS(current_accel());
2227 error_report("falling back to %s", ac->name);
2228 }
2229
2230 if (icount_enabled() && !tcg_enabled()) {
2231 error_report("-icount is not allowed with hardware virtualization");
2232 exit(1);
2233 }
2234 }
2235
2236 static void create_default_memdev(MachineState *ms, const char *path)
2237 {
2238 Object *obj;
2239 MachineClass *mc = MACHINE_GET_CLASS(ms);
2240
2241 obj = object_new(path ? TYPE_MEMORY_BACKEND_FILE : TYPE_MEMORY_BACKEND_RAM);
2242 if (path) {
2243 object_property_set_str(obj, "mem-path", path, &error_fatal);
2244 }
2245 object_property_set_int(obj, "size", ms->ram_size, &error_fatal);
2246 object_property_add_child(object_get_objects_root(), mc->default_ram_id,
2247 obj);
2248 /* Ensure backend's memory region name is equal to mc->default_ram_id */
2249 object_property_set_bool(obj, "x-use-canonical-path-for-ramblock-id",
2250 false, &error_fatal);
2251 user_creatable_complete(USER_CREATABLE(obj), &error_fatal);
2252 object_unref(obj);
2253 object_property_set_str(OBJECT(ms), "memory-backend", mc->default_ram_id,
2254 &error_fatal);
2255 }
2256
2257 static void qemu_validate_options(void)
2258 {
2259 QemuOpts *machine_opts = qemu_get_machine_opts();
2260 const char *kernel_filename = qemu_opt_get(machine_opts, "kernel");
2261 const char *initrd_filename = qemu_opt_get(machine_opts, "initrd");
2262 const char *kernel_cmdline = qemu_opt_get(machine_opts, "append");
2263
2264 if (kernel_filename == NULL) {
2265 if (kernel_cmdline != NULL) {
2266 error_report("-append only allowed with -kernel option");
2267 exit(1);
2268 }
2269
2270 if (initrd_filename != NULL) {
2271 error_report("-initrd only allowed with -kernel option");
2272 exit(1);
2273 }
2274 }
2275
2276 if (loadvm && preconfig_requested) {
2277 error_report("'preconfig' and 'loadvm' options are "
2278 "mutually exclusive");
2279 exit(EXIT_FAILURE);
2280 }
2281 if (incoming && preconfig_requested && strcmp(incoming, "defer") != 0) {
2282 error_report("'preconfig' supports '-incoming defer' only");
2283 exit(EXIT_FAILURE);
2284 }
2285
2286 #ifdef CONFIG_CURSES
2287 if (is_daemonized() && dpy.type == DISPLAY_TYPE_CURSES) {
2288 error_report("curses display cannot be used with -daemonize");
2289 exit(1);
2290 }
2291 #endif
2292 }
2293
2294 static void qemu_process_sugar_options(void)
2295 {
2296 if (mem_prealloc) {
2297 char *val;
2298
2299 val = g_strdup_printf("%d",
2300 (uint32_t) qemu_opt_get_number(qemu_find_opts_singleton("smp-opts"), "cpus", 1));
2301 object_register_sugar_prop("memory-backend", "prealloc-threads", val);
2302 g_free(val);
2303 object_register_sugar_prop("memory-backend", "prealloc", "on");
2304 }
2305
2306 if (watchdog) {
2307 int i = select_watchdog(watchdog);
2308 if (i > 0)
2309 exit (i == 1 ? 1 : 0);
2310 }
2311 }
2312
2313 /* -action processing */
2314
2315 /*
2316 * Process all the -action parameters parsed from cmdline.
2317 */
2318 static int process_runstate_actions(void *opaque, QemuOpts *opts, Error **errp)
2319 {
2320 Error *local_err = NULL;
2321 QDict *qdict = qemu_opts_to_qdict(opts, NULL);
2322 QObject *ret = NULL;
2323 qmp_marshal_set_action(qdict, &ret, &local_err);
2324 qobject_unref(ret);
2325 qobject_unref(qdict);
2326 if (local_err) {
2327 error_propagate(errp, local_err);
2328 return 1;
2329 }
2330 return 0;
2331 }
2332
2333 static void qemu_process_early_options(void)
2334 {
2335 #ifdef CONFIG_SECCOMP
2336 QemuOptsList *olist = qemu_find_opts_err("sandbox", NULL);
2337 if (olist) {
2338 qemu_opts_foreach(olist, parse_sandbox, NULL, &error_fatal);
2339 }
2340 #endif
2341
2342 qemu_opts_foreach(qemu_find_opts("name"),
2343 parse_name, NULL, &error_fatal);
2344
2345 if (qemu_opts_foreach(qemu_find_opts("action"),
2346 process_runstate_actions, NULL, &error_fatal)) {
2347 exit(1);
2348 }
2349
2350 #ifndef _WIN32
2351 qemu_opts_foreach(qemu_find_opts("add-fd"),
2352 parse_add_fd, NULL, &error_fatal);
2353
2354 qemu_opts_foreach(qemu_find_opts("add-fd"),
2355 cleanup_add_fd, NULL, &error_fatal);
2356 #endif
2357
2358 if (!trace_init_backends()) {
2359 exit(1);
2360 }
2361 trace_init_file();
2362
2363 /* Open the logfile at this point and set the log mask if necessary. */
2364 qemu_set_log_filename(log_file, &error_fatal);
2365 if (log_mask) {
2366 int mask;
2367 mask = qemu_str_to_log_mask(log_mask);
2368 if (!mask) {
2369 qemu_print_log_usage(stdout);
2370 exit(1);
2371 }
2372 qemu_set_log(mask);
2373 } else {
2374 qemu_set_log(0);
2375 }
2376
2377 qemu_add_default_firmwarepath();
2378 }
2379
2380 static void qemu_process_help_options(void)
2381 {
2382 /*
2383 * Check for -cpu help and -device help before we call select_machine(),
2384 * which will return an error if the architecture has no default machine
2385 * type and the user did not specify one, so that the user doesn't need
2386 * to say '-cpu help -machine something'.
2387 */
2388 if (cpu_option && is_help_option(cpu_option)) {
2389 list_cpus(cpu_option);
2390 exit(0);
2391 }
2392
2393 if (qemu_opts_foreach(qemu_find_opts("device"),
2394 device_help_func, NULL, NULL)) {
2395 exit(0);
2396 }
2397
2398 /* -L help lists the data directories and exits. */
2399 if (list_data_dirs) {
2400 qemu_list_data_dirs();
2401 exit(0);
2402 }
2403 }
2404
2405 static void qemu_maybe_daemonize(const char *pid_file)
2406 {
2407 Error *err;
2408
2409 os_daemonize();
2410 rcu_disable_atfork();
2411
2412 if (pid_file && !qemu_write_pidfile(pid_file, &err)) {
2413 error_reportf_err(err, "cannot create PID file: ");
2414 exit(1);
2415 }
2416
2417 qemu_unlink_pidfile_notifier.notify = qemu_unlink_pidfile;
2418 qemu_add_exit_notifier(&qemu_unlink_pidfile_notifier);
2419 }
2420
2421 static void qemu_init_displays(void)
2422 {
2423 DisplayState *ds;
2424
2425 /* init local displays */
2426 ds = init_displaystate();
2427 qemu_display_init(ds, &dpy);
2428
2429 /* must be after terminal init, SDL library changes signal handlers */
2430 os_setup_signal_handling();
2431
2432 /* init remote displays */
2433 #ifdef CONFIG_VNC
2434 qemu_opts_foreach(qemu_find_opts("vnc"),
2435 vnc_init_func, NULL, &error_fatal);
2436 #endif
2437
2438 if (using_spice) {
2439 qemu_spice.display_init();
2440 }
2441 }
2442
2443 static void qemu_init_board(void)
2444 {
2445 MachineClass *machine_class = MACHINE_GET_CLASS(current_machine);
2446
2447 if (machine_class->default_ram_id && current_machine->ram_size &&
2448 numa_uses_legacy_mem() && !current_machine->ram_memdev_id) {
2449 create_default_memdev(current_machine, mem_path);
2450 }
2451
2452 /* process plugin before CPUs are created, but once -smp has been parsed */
2453 qemu_plugin_load_list(&plugin_list, &error_fatal);
2454
2455 /* From here on we enter MACHINE_PHASE_INITIALIZED. */
2456 machine_run_board_init(current_machine);
2457
2458 /*
2459 * TODO To drop support for deprecated bogus if=..., move
2460 * drive_check_orphaned() here, replacing this call. Also drop
2461 * its deprecation warning, along with DriveInfo member
2462 * @claimed_by_board.
2463 */
2464 drive_mark_claimed_by_board();
2465
2466 realtime_init();
2467
2468 if (hax_enabled()) {
2469 /* FIXME: why isn't cpu_synchronize_all_post_init enough? */
2470 hax_sync_vcpus();
2471 }
2472 }
2473
2474 static void qemu_create_cli_devices(void)
2475 {
2476 soundhw_init();
2477
2478 qemu_opts_foreach(qemu_find_opts("fw_cfg"),
2479 parse_fw_cfg, fw_cfg_find(), &error_fatal);
2480
2481 /* init USB devices */
2482 if (machine_usb(current_machine)) {
2483 if (foreach_device_config(DEV_USB, usb_parse) < 0)
2484 exit(1);
2485 }
2486
2487 /* init generic devices */
2488 rom_set_order_override(FW_CFG_ORDER_OVERRIDE_DEVICE);
2489 qemu_opts_foreach(qemu_find_opts("device"),
2490 device_init_func, NULL, &error_fatal);
2491 rom_reset_order_override();
2492 }
2493
2494 static void qemu_machine_creation_done(void)
2495 {
2496 /* Did we create any drives that we failed to create a device for? */
2497 drive_check_orphaned();
2498
2499 /* Don't warn about the default network setup that you get if
2500 * no command line -net or -netdev options are specified. There
2501 * are two cases that we would otherwise complain about:
2502 * (1) board doesn't support a NIC but the implicit "-net nic"
2503 * requested one
2504 * (2) CONFIG_SLIRP not set, in which case the implicit "-net nic"
2505 * sets up a nic that isn't connected to anything.
2506 */
2507 if (!default_net && (!qtest_enabled() || has_defaults)) {
2508 net_check_clients();
2509 }
2510
2511 qdev_prop_check_globals();
2512
2513 qdev_machine_creation_done();
2514
2515 if (foreach_device_config(DEV_GDB, gdbserver_start) < 0) {
2516 exit(1);
2517 }
2518 }
2519
2520 void qmp_x_exit_preconfig(Error **errp)
2521 {
2522 if (phase_check(PHASE_MACHINE_INITIALIZED)) {
2523 error_setg(errp, "The command is permitted only before machine initialization");
2524 return;
2525 }
2526
2527 qemu_init_board();
2528 qemu_create_cli_devices();
2529 qemu_machine_creation_done();
2530
2531 if (loadvm) {
2532 Error *local_err = NULL;
2533 if (load_snapshot(loadvm, &local_err) < 0) {
2534 error_report_err(local_err);
2535 autostart = 0;
2536 exit(1);
2537 }
2538 }
2539 if (replay_mode != REPLAY_MODE_NONE) {
2540 replay_vmstate_init();
2541 }
2542
2543 if (incoming) {
2544 Error *local_err = NULL;
2545 if (strcmp(incoming, "defer") != 0) {
2546 qmp_migrate_incoming(incoming, &local_err);
2547 if (local_err) {
2548 error_reportf_err(local_err, "-incoming %s: ", incoming);
2549 exit(1);
2550 }
2551 }
2552 } else if (autostart) {
2553 qmp_cont(NULL);
2554 }
2555 }
2556
2557 void qemu_init(int argc, char **argv, char **envp)
2558 {
2559 QemuOpts *opts;
2560 QemuOpts *icount_opts = NULL, *accel_opts = NULL;
2561 QemuOptsList *olist;
2562 int optind;
2563 const char *optarg;
2564 MachineClass *machine_class;
2565 bool userconfig = true;
2566 FILE *vmstate_dump_file = NULL;
2567
2568 qemu_add_opts(&qemu_drive_opts);
2569 qemu_add_drive_opts(&qemu_legacy_drive_opts);
2570 qemu_add_drive_opts(&qemu_common_drive_opts);
2571 qemu_add_drive_opts(&qemu_drive_opts);
2572 qemu_add_drive_opts(&bdrv_runtime_opts);
2573 qemu_add_opts(&qemu_chardev_opts);
2574 qemu_add_opts(&qemu_device_opts);
2575 qemu_add_opts(&qemu_netdev_opts);
2576 qemu_add_opts(&qemu_nic_opts);
2577 qemu_add_opts(&qemu_net_opts);
2578 qemu_add_opts(&qemu_rtc_opts);
2579 qemu_add_opts(&qemu_global_opts);
2580 qemu_add_opts(&qemu_mon_opts);
2581 qemu_add_opts(&qemu_trace_opts);
2582 qemu_plugin_add_opts();
2583 qemu_add_opts(&qemu_option_rom_opts);
2584 qemu_add_opts(&qemu_machine_opts);
2585 qemu_add_opts(&qemu_accel_opts);
2586 qemu_add_opts(&qemu_mem_opts);
2587 qemu_add_opts(&qemu_smp_opts);
2588 qemu_add_opts(&qemu_boot_opts);
2589 qemu_add_opts(&qemu_add_fd_opts);
2590 qemu_add_opts(&qemu_object_opts);
2591 qemu_add_opts(&qemu_tpmdev_opts);
2592 qemu_add_opts(&qemu_overcommit_opts);
2593 qemu_add_opts(&qemu_msg_opts);
2594 qemu_add_opts(&qemu_name_opts);
2595 qemu_add_opts(&qemu_numa_opts);
2596 qemu_add_opts(&qemu_icount_opts);
2597 qemu_add_opts(&qemu_semihosting_config_opts);
2598 qemu_add_opts(&qemu_fw_cfg_opts);
2599 qemu_add_opts(&qemu_action_opts);
2600 module_call_init(MODULE_INIT_OPTS);
2601
2602 error_init(argv[0]);
2603 qemu_init_exec_dir(argv[0]);
2604
2605 qemu_init_subsystems();
2606
2607 /* first pass of option parsing */
2608 optind = 1;
2609 while (optind < argc) {
2610 if (argv[optind][0] != '-') {
2611 /* disk image */
2612 optind++;
2613 } else {
2614 const QEMUOption *popt;
2615
2616 popt = lookup_opt(argc, argv, &optarg, &optind);
2617 switch (popt->index) {
2618 case QEMU_OPTION_nouserconfig:
2619 userconfig = false;
2620 break;
2621 }
2622 }
2623 }
2624
2625 if (userconfig) {
2626 if (qemu_read_default_config_file() < 0) {
2627 exit(1);
2628 }
2629 }
2630
2631 /* second pass of option parsing */
2632 optind = 1;
2633 for(;;) {
2634 if (optind >= argc)
2635 break;
2636 if (argv[optind][0] != '-') {
2637 loc_set_cmdline(argv, optind, 1);
2638 drive_add(IF_DEFAULT, 0, argv[optind++], HD_OPTS);
2639 } else {
2640 const QEMUOption *popt;
2641
2642 popt = lookup_opt(argc, argv, &optarg, &optind);
2643 if (!(popt->arch_mask & arch_type)) {
2644 error_report("Option not supported for this target");
2645 exit(1);
2646 }
2647 switch(popt->index) {
2648 case QEMU_OPTION_cpu:
2649 /* hw initialization will check this */
2650 cpu_option = optarg;
2651 break;
2652 case QEMU_OPTION_hda:
2653 case QEMU_OPTION_hdb:
2654 case QEMU_OPTION_hdc:
2655 case QEMU_OPTION_hdd:
2656 drive_add(IF_DEFAULT, popt->index - QEMU_OPTION_hda, optarg,
2657 HD_OPTS);
2658 break;
2659 case QEMU_OPTION_blockdev:
2660 {
2661 Visitor *v;
2662 BlockdevOptionsQueueEntry *bdo;
2663
2664 v = qobject_input_visitor_new_str(optarg, "driver",
2665 &error_fatal);
2666
2667 bdo = g_new(BlockdevOptionsQueueEntry, 1);
2668 visit_type_BlockdevOptions(v, NULL, &bdo->bdo,
2669 &error_fatal);
2670 visit_free(v);
2671 loc_save(&bdo->loc);
2672 QSIMPLEQ_INSERT_TAIL(&bdo_queue, bdo, entry);
2673 break;
2674 }
2675 case QEMU_OPTION_drive:
2676 if (drive_def(optarg) == NULL) {
2677 exit(1);
2678 }
2679 break;
2680 case QEMU_OPTION_set:
2681 if (qemu_set_option(optarg) != 0)
2682 exit(1);
2683 break;
2684 case QEMU_OPTION_global:
2685 if (qemu_global_option(optarg) != 0)
2686 exit(1);
2687 break;
2688 case QEMU_OPTION_mtdblock:
2689 drive_add(IF_MTD, -1, optarg, MTD_OPTS);
2690 break;
2691 case QEMU_OPTION_sd:
2692 drive_add(IF_SD, -1, optarg, SD_OPTS);
2693 break;
2694 case QEMU_OPTION_pflash:
2695 drive_add(IF_PFLASH, -1, optarg, PFLASH_OPTS);
2696 break;
2697 case QEMU_OPTION_snapshot:
2698 {
2699 Error *blocker = NULL;
2700 snapshot = 1;
2701 error_setg(&blocker, QERR_REPLAY_NOT_SUPPORTED,
2702 "-snapshot");
2703 replay_add_blocker(blocker);
2704 }
2705 break;
2706 case QEMU_OPTION_numa:
2707 opts = qemu_opts_parse_noisily(qemu_find_opts("numa"),
2708 optarg, true);
2709 if (!opts) {
2710 exit(1);
2711 }
2712 break;
2713 case QEMU_OPTION_display:
2714 parse_display(optarg);
2715 break;
2716 case QEMU_OPTION_nographic:
2717 olist = qemu_find_opts("machine");
2718 qemu_opts_parse_noisily(olist, "graphics=off", false);
2719 nographic = true;
2720 dpy.type = DISPLAY_TYPE_NONE;
2721 break;
2722 case QEMU_OPTION_curses:
2723 #ifdef CONFIG_CURSES
2724 dpy.type = DISPLAY_TYPE_CURSES;
2725 #else
2726 error_report("curses or iconv support is disabled");
2727 exit(1);
2728 #endif
2729 break;
2730 case QEMU_OPTION_portrait:
2731 graphic_rotate = 90;
2732 break;
2733 case QEMU_OPTION_rotate:
2734 graphic_rotate = strtol(optarg, (char **) &optarg, 10);
2735 if (graphic_rotate != 0 && graphic_rotate != 90 &&
2736 graphic_rotate != 180 && graphic_rotate != 270) {
2737 error_report("only 90, 180, 270 deg rotation is available");
2738 exit(1);
2739 }
2740 break;
2741 case QEMU_OPTION_kernel:
2742 qemu_opts_set(qemu_find_opts("machine"), "kernel", optarg, &error_abort);
2743 break;
2744 case QEMU_OPTION_initrd:
2745 qemu_opts_set(qemu_find_opts("machine"), "initrd", optarg, &error_abort);
2746 break;
2747 case QEMU_OPTION_append:
2748 qemu_opts_set(qemu_find_opts("machine"), "append", optarg, &error_abort);
2749 break;
2750 case QEMU_OPTION_dtb:
2751 qemu_opts_set(qemu_find_opts("machine"), "dtb", optarg, &error_abort);
2752 break;
2753 case QEMU_OPTION_cdrom:
2754 drive_add(IF_DEFAULT, 2, optarg, CDROM_OPTS);
2755 break;
2756 case QEMU_OPTION_boot:
2757 opts = qemu_opts_parse_noisily(qemu_find_opts("boot-opts"),
2758 optarg, true);
2759 if (!opts) {
2760 exit(1);
2761 }
2762 break;
2763 case QEMU_OPTION_fda:
2764 case QEMU_OPTION_fdb:
2765 drive_add(IF_FLOPPY, popt->index - QEMU_OPTION_fda,
2766 optarg, FD_OPTS);
2767 break;
2768 case QEMU_OPTION_no_fd_bootchk:
2769 fd_bootchk = 0;
2770 break;
2771 case QEMU_OPTION_netdev:
2772 default_net = 0;
2773 if (net_client_parse(qemu_find_opts("netdev"), optarg) == -1) {
2774 exit(1);
2775 }
2776 break;
2777 case QEMU_OPTION_nic:
2778 default_net = 0;
2779 if (net_client_parse(qemu_find_opts("nic"), optarg) == -1) {
2780 exit(1);
2781 }
2782 break;
2783 case QEMU_OPTION_net:
2784 default_net = 0;
2785 if (net_client_parse(qemu_find_opts("net"), optarg) == -1) {
2786 exit(1);
2787 }
2788 break;
2789 #ifdef CONFIG_LIBISCSI
2790 case QEMU_OPTION_iscsi:
2791 opts = qemu_opts_parse_noisily(qemu_find_opts("iscsi"),
2792 optarg, false);
2793 if (!opts) {
2794 exit(1);
2795 }
2796 break;
2797 #endif
2798 case QEMU_OPTION_audio_help:
2799 audio_legacy_help();
2800 exit (0);
2801 break;
2802 case QEMU_OPTION_audiodev:
2803 audio_parse_option(optarg);
2804 break;
2805 case QEMU_OPTION_soundhw:
2806 select_soundhw (optarg);
2807 break;
2808 case QEMU_OPTION_h:
2809 help(0);
2810 break;
2811 case QEMU_OPTION_version:
2812 version();
2813 exit(0);
2814 break;
2815 case QEMU_OPTION_m:
2816 opts = qemu_opts_parse_noisily(qemu_find_opts("memory"),
2817 optarg, true);
2818 if (!opts) {
2819 exit(EXIT_FAILURE);
2820 }
2821 break;
2822 #ifdef CONFIG_TPM
2823 case QEMU_OPTION_tpmdev:
2824 if (tpm_config_parse(qemu_find_opts("tpmdev"), optarg) < 0) {
2825 exit(1);
2826 }
2827 break;
2828 #endif
2829 case QEMU_OPTION_mempath:
2830 mem_path = optarg;
2831 break;
2832 case QEMU_OPTION_mem_prealloc:
2833 mem_prealloc = 1;
2834 break;
2835 case QEMU_OPTION_d:
2836 log_mask = optarg;
2837 break;
2838 case QEMU_OPTION_D:
2839 log_file = optarg;
2840 break;
2841 case QEMU_OPTION_DFILTER:
2842 qemu_set_dfilter_ranges(optarg, &error_fatal);
2843 break;
2844 case QEMU_OPTION_seed:
2845 qemu_guest_random_seed_main(optarg, &error_fatal);
2846 break;
2847 case QEMU_OPTION_s:
2848 add_device_config(DEV_GDB, "tcp::" DEFAULT_GDBSTUB_PORT);
2849 break;
2850 case QEMU_OPTION_gdb:
2851 add_device_config(DEV_GDB, optarg);
2852 break;
2853 case QEMU_OPTION_L:
2854 if (is_help_option(optarg)) {
2855 list_data_dirs = true;
2856 } else {
2857 qemu_add_data_dir(g_strdup(optarg));
2858 }
2859 break;
2860 case QEMU_OPTION_bios:
2861 qemu_opts_set(qemu_find_opts("machine"), "firmware", optarg, &error_abort);
2862 break;
2863 case QEMU_OPTION_singlestep:
2864 singlestep = 1;
2865 break;
2866 case QEMU_OPTION_S:
2867 autostart = 0;
2868 break;
2869 case QEMU_OPTION_k:
2870 keyboard_layout = optarg;
2871 break;
2872 case QEMU_OPTION_vga:
2873 vga_model = optarg;
2874 default_vga = 0;
2875 break;
2876 case QEMU_OPTION_g:
2877 {
2878 const char *p;
2879 int w, h, depth;
2880 p = optarg;
2881 w = strtol(p, (char **)&p, 10);
2882 if (w <= 0) {
2883 graphic_error:
2884 error_report("invalid resolution or depth");
2885 exit(1);
2886 }
2887 if (*p != 'x')
2888 goto graphic_error;
2889 p++;
2890 h = strtol(p, (char **)&p, 10);
2891 if (h <= 0)
2892 goto graphic_error;
2893 if (*p == 'x') {
2894 p++;
2895 depth = strtol(p, (char **)&p, 10);
2896 if (depth != 1 && depth != 2 && depth != 4 &&
2897 depth != 8 && depth != 15 && depth != 16 &&
2898 depth != 24 && depth != 32)
2899 goto graphic_error;
2900 } else if (*p == '\0') {
2901 depth = graphic_depth;
2902 } else {
2903 goto graphic_error;
2904 }
2905
2906 graphic_width = w;
2907 graphic_height = h;
2908 graphic_depth = depth;
2909 }
2910 break;
2911 case QEMU_OPTION_echr:
2912 {
2913 char *r;
2914 term_escape_char = strtol(optarg, &r, 0);
2915 if (r == optarg)
2916 printf("Bad argument to echr\n");
2917 break;
2918 }
2919 case QEMU_OPTION_monitor:
2920 default_monitor = 0;
2921 if (strncmp(optarg, "none", 4)) {
2922 monitor_parse(optarg, "readline", false);
2923 }
2924 break;
2925 case QEMU_OPTION_qmp:
2926 monitor_parse(optarg, "control", false);
2927 default_monitor = 0;
2928 break;
2929 case QEMU_OPTION_qmp_pretty:
2930 monitor_parse(optarg, "control", true);
2931 default_monitor = 0;
2932 break;
2933 case QEMU_OPTION_mon:
2934 opts = qemu_opts_parse_noisily(qemu_find_opts("mon"), optarg,
2935 true);
2936 if (!opts) {
2937 exit(1);
2938 }
2939 default_monitor = 0;
2940 break;
2941 case QEMU_OPTION_chardev:
2942 opts = qemu_opts_parse_noisily(qemu_find_opts("chardev"),
2943 optarg, true);
2944 if (!opts) {
2945 exit(1);
2946 }
2947 break;
2948 case QEMU_OPTION_fsdev:
2949 olist = qemu_find_opts("fsdev");
2950 if (!olist) {
2951 error_report("fsdev support is disabled");
2952 exit(1);
2953 }
2954 opts = qemu_opts_parse_noisily(olist, optarg, true);
2955 if (!opts) {
2956 exit(1);
2957 }
2958 break;
2959 case QEMU_OPTION_virtfs: {
2960 QemuOpts *fsdev;
2961 QemuOpts *device;
2962 const char *writeout, *sock_fd, *socket, *path, *security_model,
2963 *multidevs;
2964
2965 olist = qemu_find_opts("virtfs");
2966 if (!olist) {
2967 error_report("virtfs support is disabled");
2968 exit(1);
2969 }
2970 opts = qemu_opts_parse_noisily(olist, optarg, true);
2971 if (!opts) {
2972 exit(1);
2973 }
2974
2975 if (qemu_opt_get(opts, "fsdriver") == NULL ||
2976 qemu_opt_get(opts, "mount_tag") == NULL) {
2977 error_report("Usage: -virtfs fsdriver,mount_tag=tag");
2978 exit(1);
2979 }
2980 fsdev = qemu_opts_create(qemu_find_opts("fsdev"),
2981 qemu_opts_id(opts) ?:
2982 qemu_opt_get(opts, "mount_tag"),
2983 1, NULL);
2984 if (!fsdev) {
2985 error_report("duplicate or invalid fsdev id: %s",
2986 qemu_opt_get(opts, "mount_tag"));
2987 exit(1);
2988 }
2989
2990 writeout = qemu_opt_get(opts, "writeout");
2991 if (writeout) {
2992 #ifdef CONFIG_SYNC_FILE_RANGE
2993 qemu_opt_set(fsdev, "writeout", writeout, &error_abort);
2994 #else
2995 error_report("writeout=immediate not supported "
2996 "on this platform");
2997 exit(1);
2998 #endif
2999 }
3000 qemu_opt_set(fsdev, "fsdriver",
3001 qemu_opt_get(opts, "fsdriver"), &error_abort);
3002 path = qemu_opt_get(opts, "path");
3003 if (path) {
3004 qemu_opt_set(fsdev, "path", path, &error_abort);
3005 }
3006 security_model = qemu_opt_get(opts, "security_model");
3007 if (security_model) {
3008 qemu_opt_set(fsdev, "security_model", security_model,
3009 &error_abort);
3010 }
3011 socket = qemu_opt_get(opts, "socket");
3012 if (socket) {
3013 qemu_opt_set(fsdev, "socket", socket, &error_abort);
3014 }
3015 sock_fd = qemu_opt_get(opts, "sock_fd");
3016 if (sock_fd) {
3017 qemu_opt_set(fsdev, "sock_fd", sock_fd, &error_abort);
3018 }
3019
3020 qemu_opt_set_bool(fsdev, "readonly",
3021 qemu_opt_get_bool(opts, "readonly", 0),
3022 &error_abort);
3023 multidevs = qemu_opt_get(opts, "multidevs");
3024 if (multidevs) {
3025 qemu_opt_set(fsdev, "multidevs", multidevs, &error_abort);
3026 }
3027 device = qemu_opts_create(qemu_find_opts("device"), NULL, 0,
3028 &error_abort);
3029 qemu_opt_set(device, "driver", "virtio-9p-pci", &error_abort);
3030 qemu_opt_set(device, "fsdev",
3031 qemu_opts_id(fsdev), &error_abort);
3032 qemu_opt_set(device, "mount_tag",
3033 qemu_opt_get(opts, "mount_tag"), &error_abort);
3034 break;
3035 }
3036 case QEMU_OPTION_serial:
3037 add_device_config(DEV_SERIAL, optarg);
3038 default_serial = 0;
3039 if (strncmp(optarg, "mon:", 4) == 0) {
3040 default_monitor = 0;
3041 }
3042 break;
3043 case QEMU_OPTION_watchdog:
3044 if (watchdog) {
3045 error_report("only one watchdog option may be given");
3046 exit(1);
3047 }
3048 watchdog = optarg;
3049 break;
3050 case QEMU_OPTION_action:
3051 olist = qemu_find_opts("action");
3052 if (!qemu_opts_parse_noisily(olist, optarg, false)) {
3053 exit(1);
3054 }
3055 break;
3056 case QEMU_OPTION_watchdog_action:
3057 if (select_watchdog_action(optarg) == -1) {
3058 error_report("unknown -watchdog-action parameter");
3059 exit(1);
3060 }
3061 break;
3062 case QEMU_OPTION_parallel:
3063 add_device_config(DEV_PARALLEL, optarg);
3064 default_parallel = 0;
3065 if (strncmp(optarg, "mon:", 4) == 0) {
3066 default_monitor = 0;
3067 }
3068 break;
3069 case QEMU_OPTION_debugcon:
3070 add_device_config(DEV_DEBUGCON, optarg);
3071 break;
3072 case QEMU_OPTION_loadvm:
3073 loadvm = optarg;
3074 break;
3075 case QEMU_OPTION_full_screen:
3076 dpy.has_full_screen = true;
3077 dpy.full_screen = true;
3078 break;
3079 case QEMU_OPTION_alt_grab:
3080 alt_grab = 1;
3081 break;
3082 case QEMU_OPTION_ctrl_grab:
3083 ctrl_grab = 1;
3084 break;
3085 case QEMU_OPTION_no_quit:
3086 dpy.has_window_close = true;
3087 dpy.window_close = false;
3088 break;
3089 case QEMU_OPTION_sdl:
3090 #ifdef CONFIG_SDL
3091 dpy.type = DISPLAY_TYPE_SDL;
3092 break;
3093 #else
3094 error_report("SDL support is disabled");
3095 exit(1);
3096 #endif
3097 case QEMU_OPTION_pidfile:
3098 pid_file = optarg;
3099 break;
3100 case QEMU_OPTION_win2k_hack:
3101 win2k_install_hack = 1;
3102 break;
3103 case QEMU_OPTION_acpitable:
3104 opts = qemu_opts_parse_noisily(qemu_find_opts("acpi"),
3105 optarg, true);
3106 if (!opts) {
3107 exit(1);
3108 }
3109 acpi_table_add(opts, &error_fatal);
3110 break;
3111 case QEMU_OPTION_smbios:
3112 opts = qemu_opts_parse_noisily(qemu_find_opts("smbios"),
3113 optarg, false);
3114 if (!opts) {
3115 exit(1);
3116 }
3117 smbios_entry_add(opts, &error_fatal);
3118 break;
3119 case QEMU_OPTION_fwcfg:
3120 opts = qemu_opts_parse_noisily(qemu_find_opts("fw_cfg"),
3121 optarg, true);
3122 if (opts == NULL) {
3123 exit(1);
3124 }
3125 break;
3126 case QEMU_OPTION_preconfig:
3127 preconfig_requested = true;
3128 break;
3129 case QEMU_OPTION_enable_kvm:
3130 olist = qemu_find_opts("machine");
3131 qemu_opts_parse_noisily(olist, "accel=kvm", false);
3132 break;
3133 case QEMU_OPTION_M:
3134 case QEMU_OPTION_machine:
3135 olist = qemu_find_opts("machine");
3136 opts = qemu_opts_parse_noisily(olist, optarg, true);
3137 if (!opts) {
3138 exit(1);
3139 }
3140 break;
3141 case QEMU_OPTION_accel:
3142 accel_opts = qemu_opts_parse_noisily(qemu_find_opts("accel"),
3143 optarg, true);
3144 optarg = qemu_opt_get(accel_opts, "accel");
3145 if (!optarg || is_help_option(optarg)) {
3146 printf("Accelerators supported in QEMU binary:\n");
3147 GSList *el, *accel_list = object_class_get_list(TYPE_ACCEL,
3148 false);
3149 for (el = accel_list; el; el = el->next) {
3150 gchar *typename = g_strdup(object_class_get_name(
3151 OBJECT_CLASS(el->data)));
3152 /* omit qtest which is used for tests only */
3153 if (g_strcmp0(typename, ACCEL_CLASS_NAME("qtest")) &&
3154 g_str_has_suffix(typename, ACCEL_CLASS_SUFFIX)) {
3155 gchar **optname = g_strsplit(typename,
3156 ACCEL_CLASS_SUFFIX, 0);
3157 printf("%s\n", optname[0]);
3158 g_strfreev(optname);
3159 }
3160 g_free(typename);
3161 }
3162 g_slist_free(accel_list);
3163 exit(0);
3164 }
3165 break;
3166 case QEMU_OPTION_usb:
3167 olist = qemu_find_opts("machine");
3168 qemu_opts_parse_noisily(olist, "usb=on", false);
3169 break;
3170 case QEMU_OPTION_usbdevice:
3171 error_report("'-usbdevice' is deprecated, please use "
3172 "'-device usb-...' instead");
3173 olist = qemu_find_opts("machine");
3174 qemu_opts_parse_noisily(olist, "usb=on", false);
3175 add_device_config(DEV_USB, optarg);
3176 break;
3177 case QEMU_OPTION_device:
3178 if (!qemu_opts_parse_noisily(qemu_find_opts("device"),
3179 optarg, true)) {
3180 exit(1);
3181 }
3182 break;
3183 case QEMU_OPTION_smp:
3184 if (!qemu_opts_parse_noisily(qemu_find_opts("smp-opts"),
3185 optarg, true)) {
3186 exit(1);
3187 }
3188 break;
3189 case QEMU_OPTION_vnc:
3190 vnc_parse(optarg);
3191 break;
3192 case QEMU_OPTION_no_acpi:
3193 olist = qemu_find_opts("machine");
3194 qemu_opts_parse_noisily(olist, "acpi=off", false);
3195 break;
3196 case QEMU_OPTION_no_hpet:
3197 olist = qemu_find_opts("machine");
3198 qemu_opts_parse_noisily(olist, "hpet=off", false);
3199 break;
3200 case QEMU_OPTION_no_reboot:
3201 olist = qemu_find_opts("action");
3202 qemu_opts_parse_noisily(olist, "reboot=shutdown", false);
3203 break;
3204 case QEMU_OPTION_no_shutdown:
3205 olist = qemu_find_opts("action");
3206 qemu_opts_parse_noisily(olist, "shutdown=pause", false);
3207 break;
3208 case QEMU_OPTION_uuid:
3209 if (qemu_uuid_parse(optarg, &qemu_uuid) < 0) {
3210 error_report("failed to parse UUID string: wrong format");
3211 exit(1);
3212 }
3213 qemu_uuid_set = true;
3214 break;
3215 case QEMU_OPTION_option_rom:
3216 if (nb_option_roms >= MAX_OPTION_ROMS) {
3217 error_report("too many option ROMs");
3218 exit(1);
3219 }
3220 opts = qemu_opts_parse_noisily(qemu_find_opts("option-rom"),
3221 optarg, true);
3222 if (!opts) {
3223 exit(1);
3224 }
3225 option_rom[nb_option_roms].name = qemu_opt_get(opts, "romfile");
3226 option_rom[nb_option_roms].bootindex =
3227 qemu_opt_get_number(opts, "bootindex", -1);
3228 if (!option_rom[nb_option_roms].name) {
3229 error_report("Option ROM file is not specified");
3230 exit(1);
3231 }
3232 nb_option_roms++;
3233 break;
3234 case QEMU_OPTION_semihosting:
3235 qemu_semihosting_enable();
3236 break;
3237 case QEMU_OPTION_semihosting_config:
3238 if (qemu_semihosting_config_options(optarg) != 0) {
3239 exit(1);
3240 }
3241 break;
3242 case QEMU_OPTION_name:
3243 opts = qemu_opts_parse_noisily(qemu_find_opts("name"),
3244 optarg, true);
3245 if (!opts) {
3246 exit(1);
3247 }
3248 /* Capture guest name if -msg guest-name is used later */
3249 error_guest_name = qemu_opt_get(opts, "guest");
3250 break;
3251 case QEMU_OPTION_prom_env:
3252 if (nb_prom_envs >= MAX_PROM_ENVS) {
3253 error_report("too many prom variables");
3254 exit(1);
3255 }
3256 prom_envs[nb_prom_envs] = optarg;
3257 nb_prom_envs++;
3258 break;
3259 case QEMU_OPTION_old_param:
3260 old_param = 1;
3261 break;
3262 case QEMU_OPTION_rtc:
3263 opts = qemu_opts_parse_noisily(qemu_find_opts("rtc"), optarg,
3264 false);
3265 if (!opts) {
3266 exit(1);
3267 }
3268 break;
3269 case QEMU_OPTION_icount:
3270 icount_opts = qemu_opts_parse_noisily(qemu_find_opts("icount"),
3271 optarg, true);
3272 if (!icount_opts) {
3273 exit(1);
3274 }
3275 break;
3276 case QEMU_OPTION_incoming:
3277 if (!incoming) {
3278 runstate_set(RUN_STATE_INMIGRATE);
3279 }
3280 incoming = optarg;
3281 break;
3282 case QEMU_OPTION_only_migratable:
3283 only_migratable = 1;
3284 break;
3285 case QEMU_OPTION_nodefaults:
3286 has_defaults = 0;
3287 break;
3288 case QEMU_OPTION_xen_domid:
3289 if (!(xen_available())) {
3290 error_report("Option not supported for this target");
3291 exit(1);
3292 }
3293 xen_domid = atoi(optarg);
3294 break;
3295 case QEMU_OPTION_xen_attach:
3296 if (!(xen_available())) {
3297 error_report("Option not supported for this target");
3298 exit(1);
3299 }
3300 xen_mode = XEN_ATTACH;
3301 break;
3302 case QEMU_OPTION_xen_domid_restrict:
3303 if (!(xen_available())) {
3304 error_report("Option not supported for this target");
3305 exit(1);
3306 }
3307 xen_domid_restrict = true;
3308 break;
3309 case QEMU_OPTION_trace:
3310 trace_opt_parse(optarg);
3311 break;
3312 case QEMU_OPTION_plugin:
3313 qemu_plugin_opt_parse(optarg, &plugin_list);
3314 break;
3315 case QEMU_OPTION_readconfig:
3316 {
3317 int ret = qemu_read_config_file(optarg);
3318 if (ret < 0) {
3319 error_report("read config %s: %s", optarg,
3320 strerror(-ret));
3321 exit(1);
3322 }
3323 break;
3324 }
3325 case QEMU_OPTION_spice:
3326 olist = qemu_find_opts_err("spice", NULL);
3327 if (!olist) {
3328 ui_module_load_one("spice-core");
3329 olist = qemu_find_opts("spice");
3330 }
3331 if (!olist) {
3332 error_report("spice support is disabled");
3333 exit(1);
3334 }
3335 opts = qemu_opts_parse_noisily(olist, optarg, false);
3336 if (!opts) {
3337 exit(1);
3338 }
3339 display_remote++;
3340 break;
3341 case QEMU_OPTION_writeconfig:
3342 {
3343 FILE *fp;
3344 if (strcmp(optarg, "-") == 0) {
3345 fp = stdout;
3346 } else {
3347 fp = fopen(optarg, "w");
3348 if (fp == NULL) {
3349 error_report("open %s: %s", optarg,
3350 strerror(errno));
3351 exit(1);
3352 }
3353 }
3354 qemu_config_write(fp);
3355 if (fp != stdout) {
3356 fclose(fp);
3357 }
3358 break;
3359 }
3360 case QEMU_OPTION_qtest:
3361 qtest_chrdev = optarg;
3362 break;
3363 case QEMU_OPTION_qtest_log:
3364 qtest_log = optarg;
3365 break;
3366 case QEMU_OPTION_sandbox:
3367 olist = qemu_find_opts("sandbox");
3368 if (!olist) {
3369 #ifndef CONFIG_SECCOMP
3370 error_report("-sandbox support is not enabled "
3371 "in this QEMU binary");
3372 #endif
3373 exit(1);
3374 }
3375
3376 opts = qemu_opts_parse_noisily(olist, optarg, true);
3377 if (!opts) {
3378 exit(1);
3379 }
3380 break;
3381 case QEMU_OPTION_add_fd:
3382 #ifndef _WIN32
3383 opts = qemu_opts_parse_noisily(qemu_find_opts("add-fd"),
3384 optarg, false);
3385 if (!opts) {
3386 exit(1);
3387 }
3388 #else
3389 error_report("File descriptor passing is disabled on this "
3390 "platform");
3391 exit(1);
3392 #endif
3393 break;
3394 case QEMU_OPTION_object:
3395 opts = qemu_opts_parse_noisily(qemu_find_opts("object"),
3396 optarg, true);
3397 if (!opts) {
3398 exit(1);
3399 }
3400 break;
3401 case QEMU_OPTION_overcommit:
3402 opts = qemu_opts_parse_noisily(qemu_find_opts("overcommit"),
3403 optarg, false);
3404 if (!opts) {
3405 exit(1);
3406 }
3407 enable_mlock = qemu_opt_get_bool(opts, "mem-lock", false);
3408 enable_cpu_pm = qemu_opt_get_bool(opts, "cpu-pm", false);
3409 break;
3410 case QEMU_OPTION_msg:
3411 opts = qemu_opts_parse_noisily(qemu_find_opts("msg"), optarg,
3412 false);
3413 if (!opts) {
3414 exit(1);
3415 }
3416 configure_msg(opts);
3417 break;
3418 case QEMU_OPTION_dump_vmstate:
3419 if (vmstate_dump_file) {
3420 error_report("only one '-dump-vmstate' "
3421 "option may be given");
3422 exit(1);
3423 }
3424 vmstate_dump_file = fopen(optarg, "w");
3425 if (vmstate_dump_file == NULL) {
3426 error_report("open %s: %s", optarg, strerror(errno));
3427 exit(1);
3428 }
3429 break;
3430 case QEMU_OPTION_enable_sync_profile:
3431 qsp_enable();
3432 break;
3433 case QEMU_OPTION_nouserconfig:
3434 /* Nothing to be parsed here. Especially, do not error out below. */
3435 break;
3436 default:
3437 if (os_parse_cmd_args(popt->index, optarg)) {
3438 error_report("Option not supported in this build");
3439 exit(1);
3440 }
3441 }
3442 }
3443 }
3444 /*
3445 * Clear error location left behind by the loop.
3446 * Best done right after the loop. Do not insert code here!
3447 */
3448 loc_set_none();
3449
3450 qemu_validate_options();
3451 qemu_process_sugar_options();
3452
3453 /*
3454 * These options affect everything else and should be processed
3455 * before daemonizing.
3456 */
3457 qemu_process_early_options();
3458
3459 qemu_process_help_options();
3460 qemu_maybe_daemonize(pid_file);
3461
3462 qemu_init_main_loop(&error_fatal);
3463 cpu_timers_init();
3464
3465 user_register_global_props();
3466 replay_configure(icount_opts);
3467
3468 configure_rtc(qemu_find_opts_singleton("rtc"));
3469
3470 qemu_create_machine(select_machine());
3471
3472 suspend_mux_open();
3473
3474 qemu_disable_default_devices();
3475 qemu_create_default_devices();
3476 qemu_create_early_backends();
3477
3478 qemu_apply_machine_options();
3479 phase_advance(PHASE_MACHINE_CREATED);
3480
3481 /*
3482 * Note: uses machine properties such as kernel-irqchip, must run
3483 * after machine_set_property().
3484 */
3485 configure_accelerators(argv[0]);
3486 phase_advance(PHASE_ACCEL_CREATED);
3487
3488 /*
3489 * Beware, QOM objects created before this point miss global and
3490 * compat properties.
3491 *
3492 * Global properties get set up by qdev_prop_register_global(),
3493 * called from user_register_global_props(), and certain option
3494 * desugaring. Also in CPU feature desugaring (buried in
3495 * parse_cpu_option()), which happens below this point, but may
3496 * only target the CPU type, which can only be created after
3497 * parse_cpu_option() returned the type.
3498 *
3499 * Machine compat properties: object_set_machine_compat_props().
3500 * Accelerator compat props: object_set_accelerator_compat_props(),
3501 * called from do_configure_accelerator().
3502 */
3503
3504 machine_class = MACHINE_GET_CLASS(current_machine);
3505 if (!qtest_enabled() && machine_class->deprecation_reason) {
3506 error_report("Machine type '%s' is deprecated: %s",
3507 machine_class->name, machine_class->deprecation_reason);
3508 }
3509
3510 /*
3511 * Note: creates a QOM object, must run only after global and
3512 * compat properties have been set up.
3513 */
3514 migration_object_init();
3515
3516 qemu_create_late_backends();
3517
3518 /* parse features once if machine provides default cpu_type */
3519 current_machine->cpu_type = machine_class->default_cpu_type;
3520 if (cpu_option) {
3521 current_machine->cpu_type = parse_cpu_option(cpu_option);
3522 }
3523 /* NB: for machine none cpu_type could STILL be NULL here! */
3524 accel_init_interfaces(ACCEL_GET_CLASS(current_machine->accelerator));
3525
3526 qemu_resolve_machine_memdev();
3527 parse_numa_opts(current_machine);
3528
3529 if (vmstate_dump_file) {
3530 /* dump and exit */
3531 dump_vmstate_json_to_file(vmstate_dump_file);
3532 exit(0);
3533 }
3534
3535 if (!preconfig_requested) {
3536 qmp_x_exit_preconfig(&error_fatal);
3537 }
3538 qemu_init_displays();
3539 accel_setup_post(current_machine);
3540 os_setup_post();
3541 resume_mux_open();
3542 }
AR7 emulation for QEMU