1 #include "qemu-common.h"
2 #include "qemu/error-report.h"
3 #include "qemu/option.h"
4 #include "qemu/config-file.h"
5 #include "hw/qdev.h"
6
7 static QemuOptsList qemu_drive_opts = {
8 .name = "drive",
9 .head = QTAILQ_HEAD_INITIALIZER(qemu_drive_opts.head),
10 .desc = {
11 {
12 .name = "bus",
13 .type = QEMU_OPT_NUMBER,
14 .help = "bus number",
15 },{
16 .name = "unit",
17 .type = QEMU_OPT_NUMBER,
18 .help = "unit number (i.e. lun for scsi)",
19 },{
20 .name = "if",
21 .type = QEMU_OPT_STRING,
22 .help = "interface (ide, scsi, sd, mtd, floppy, pflash, virtio)",
23 },{
24 .name = "index",
25 .type = QEMU_OPT_NUMBER,
26 },{
27 .name = "cyls",
28 .type = QEMU_OPT_NUMBER,
29 .help = "number of cylinders (ide disk geometry)",
30 },{
31 .name = "heads",
32 .type = QEMU_OPT_NUMBER,
33 .help = "number of heads (ide disk geometry)",
34 },{
35 .name = "secs",
36 .type = QEMU_OPT_NUMBER,
37 .help = "number of sectors (ide disk geometry)",
38 },{
39 .name = "trans",
40 .type = QEMU_OPT_STRING,
41 .help = "chs translation (auto, lba. none)",
42 },{
43 .name = "media",
44 .type = QEMU_OPT_STRING,
45 .help = "media type (disk, cdrom)",
46 },{
47 .name = "snapshot",
48 .type = QEMU_OPT_BOOL,
49 },{
50 .name = "file",
51 .type = QEMU_OPT_STRING,
52 .help = "disk image",
53 },{
54 .name = "cache",
55 .type = QEMU_OPT_STRING,
56 .help = "host cache usage (none, writeback, writethrough, unsafe)",
57 },{
58 .name = "aio",
59 .type = QEMU_OPT_STRING,
60 .help = "host AIO implementation (threads, native)",
61 },{
62 .name = "format",
63 .type = QEMU_OPT_STRING,
64 .help = "disk format (raw, qcow2, ...)",
65 },{
66 .name = "serial",
67 .type = QEMU_OPT_STRING,
68 },{
69 .name = "rerror",
70 .type = QEMU_OPT_STRING,
71 },{
72 .name = "werror",
73 .type = QEMU_OPT_STRING,
74 },{
75 .name = "addr",
76 .type = QEMU_OPT_STRING,
77 .help = "pci address (virtio only)",
78 },{
79 .name = "readonly",
80 .type = QEMU_OPT_BOOL,
81 },
82 { /* end of list */ }
83 },
84 };
85
86 static QemuOptsList qemu_chardev_opts = {
87 .name = "chardev",
88 .implied_opt_name = "backend",
89 .head = QTAILQ_HEAD_INITIALIZER(qemu_chardev_opts.head),
90 .desc = {
91 {
92 .name = "backend",
93 .type = QEMU_OPT_STRING,
94 },{
95 .name = "path",
96 .type = QEMU_OPT_STRING,
97 },{
98 .name = "host",
99 .type = QEMU_OPT_STRING,
100 },{
101 .name = "port",
102 .type = QEMU_OPT_STRING,
103 },{
104 .name = "localaddr",
105 .type = QEMU_OPT_STRING,
106 },{
107 .name = "localport",
108 .type = QEMU_OPT_STRING,
109 },{
110 .name = "to",
111 .type = QEMU_OPT_NUMBER,
112 },{
113 .name = "ipv4",
114 .type = QEMU_OPT_BOOL,
115 },{
116 .name = "ipv6",
117 .type = QEMU_OPT_BOOL,
118 },{
119 .name = "wait",
120 .type = QEMU_OPT_BOOL,
121 },{
122 .name = "server",
123 .type = QEMU_OPT_BOOL,
124 },{
125 .name = "delay",
126 .type = QEMU_OPT_BOOL,
127 },{
128 .name = "telnet",
129 .type = QEMU_OPT_BOOL,
130 },{
131 .name = "width",
132 .type = QEMU_OPT_NUMBER,
133 },{
134 .name = "height",
135 .type = QEMU_OPT_NUMBER,
136 },{
137 .name = "cols",
138 .type = QEMU_OPT_NUMBER,
139 },{
140 .name = "rows",
141 .type = QEMU_OPT_NUMBER,
142 },{
143 .name = "mux",
144 .type = QEMU_OPT_BOOL,
145 },{
146 .name = "signal",
147 .type = QEMU_OPT_BOOL,
148 },{
149 .name = "name",
150 .type = QEMU_OPT_STRING,
151 },{
152 .name = "debug",
153 .type = QEMU_OPT_NUMBER,
154 },
155 { /* end of list */ }
156 },
157 };
158
159 QemuOptsList qemu_fsdev_opts = {
160 .name = "fsdev",
161 .implied_opt_name = "fstype",
162 .head = QTAILQ_HEAD_INITIALIZER(qemu_fsdev_opts.head),
163 .desc = {
164 {
165 .name = "fstype",
166 .type = QEMU_OPT_STRING,
167 }, {
168 .name = "path",
169 .type = QEMU_OPT_STRING,
170 }, {
171 .name = "security_model",
172 .type = QEMU_OPT_STRING,
173 },
174 { /*End of list */ }
175 },
176 };
177
178 QemuOptsList qemu_virtfs_opts = {
179 .name = "virtfs",
180 .implied_opt_name = "fstype",
181 .head = QTAILQ_HEAD_INITIALIZER(qemu_virtfs_opts.head),
182 .desc = {
183 {
184 .name = "fstype",
185 .type = QEMU_OPT_STRING,
186 }, {
187 .name = "path",
188 .type = QEMU_OPT_STRING,
189 }, {
190 .name = "mount_tag",
191 .type = QEMU_OPT_STRING,
192 }, {
193 .name = "security_model",
194 .type = QEMU_OPT_STRING,
195 },
196
197 { /*End of list */ }
198 },
199 };
200
201 static QemuOptsList qemu_device_opts = {
202 .name = "device",
203 .implied_opt_name = "driver",
204 .head = QTAILQ_HEAD_INITIALIZER(qemu_device_opts.head),
205 .desc = {
206 /*
207 * no elements => accept any
208 * sanity checking will happen later
209 * when setting device properties
210 */
211 { /* end of list */ }
212 },
213 };
214
215 static QemuOptsList qemu_netdev_opts = {
216 .name = "netdev",
217 .implied_opt_name = "type",
218 .head = QTAILQ_HEAD_INITIALIZER(qemu_netdev_opts.head),
219 .desc = {
220 /*
221 * no elements => accept any params
222 * validation will happen later
223 */
224 { /* end of list */ }
225 },
226 };
227
228 static QemuOptsList qemu_net_opts = {
229 .name = "net",
230 .implied_opt_name = "type",
231 .head = QTAILQ_HEAD_INITIALIZER(qemu_net_opts.head),
232 .desc = {
233 /*
234 * no elements => accept any params
235 * validation will happen later
236 */
237 { /* end of list */ }
238 },
239 };
240
241 static QemuOptsList qemu_rtc_opts = {
242 .name = "rtc",
243 .head = QTAILQ_HEAD_INITIALIZER(qemu_rtc_opts.head),
244 .desc = {
245 {
246 .name = "base",
247 .type = QEMU_OPT_STRING,
248 },{
249 .name = "clock",
250 .type = QEMU_OPT_STRING,
251 },{
252 .name = "driftfix",
253 .type = QEMU_OPT_STRING,
254 },
255 { /* end of list */ }
256 },
257 };
258
259 static QemuOptsList qemu_global_opts = {
260 .name = "global",
261 .head = QTAILQ_HEAD_INITIALIZER(qemu_global_opts.head),
262 .desc = {
263 {
264 .name = "driver",
265 .type = QEMU_OPT_STRING,
266 },{
267 .name = "property",
268 .type = QEMU_OPT_STRING,
269 },{
270 .name = "value",
271 .type = QEMU_OPT_STRING,
272 },
273 { /* end of list */ }
274 },
275 };
276
277 static QemuOptsList qemu_mon_opts = {
278 .name = "mon",
279 .implied_opt_name = "chardev",
280 .head = QTAILQ_HEAD_INITIALIZER(qemu_mon_opts.head),
281 .desc = {
282 {
283 .name = "mode",
284 .type = QEMU_OPT_STRING,
285 },{
286 .name = "chardev",
287 .type = QEMU_OPT_STRING,
288 },{
289 .name = "default",
290 .type = QEMU_OPT_BOOL,
291 },{
292 .name = "pretty",
293 .type = QEMU_OPT_BOOL,
294 },
295 { /* end of list */ }
296 },
297 };
298
299 #ifdef CONFIG_SIMPLE_TRACE
300 static QemuOptsList qemu_trace_opts = {
301 .name = "trace",
302 .implied_opt_name = "trace",
303 .head = QTAILQ_HEAD_INITIALIZER(qemu_trace_opts.head),
304 .desc = {
305 {
306 .name = "file",
307 .type = QEMU_OPT_STRING,
308 },
309 { /* end if list */ }
310 },
311 };
312 #endif
313
314 static QemuOptsList qemu_cpudef_opts = {
315 .name = "cpudef",
316 .head = QTAILQ_HEAD_INITIALIZER(qemu_cpudef_opts.head),
317 .desc = {
318 {
319 .name = "name",
320 .type = QEMU_OPT_STRING,
321 },{
322 .name = "level",
323 .type = QEMU_OPT_NUMBER,
324 },{
325 .name = "vendor",
326 .type = QEMU_OPT_STRING,
327 },{
328 .name = "family",
329 .type = QEMU_OPT_NUMBER,
330 },{
331 .name = "model",
332 .type = QEMU_OPT_NUMBER,
333 },{
334 .name = "stepping",
335 .type = QEMU_OPT_NUMBER,
336 },{
337 .name = "feature_edx", /* cpuid 0000_0001.edx */
338 .type = QEMU_OPT_STRING,
339 },{
340 .name = "feature_ecx", /* cpuid 0000_0001.ecx */
341 .type = QEMU_OPT_STRING,
342 },{
343 .name = "extfeature_edx", /* cpuid 8000_0001.edx */
344 .type = QEMU_OPT_STRING,
345 },{
346 .name = "extfeature_ecx", /* cpuid 8000_0001.ecx */
347 .type = QEMU_OPT_STRING,
348 },{
349 .name = "xlevel",
350 .type = QEMU_OPT_NUMBER,
351 },{
352 .name = "model_id",
353 .type = QEMU_OPT_STRING,
354 },{
355 .name = "vendor_override",
356 .type = QEMU_OPT_NUMBER,
357 },
358 { /* end of list */ }
359 },
360 };
361
362 QemuOptsList qemu_spice_opts = {
363 .name = "spice",
364 .head = QTAILQ_HEAD_INITIALIZER(qemu_spice_opts.head),
365 .desc = {
366 {
367 .name = "port",
368 .type = QEMU_OPT_NUMBER,
369 },{
370 .name = "tls-port",
371 .type = QEMU_OPT_NUMBER,
372 },{
373 .name = "addr",
374 .type = QEMU_OPT_STRING,
375 },{
376 .name = "ipv4",
377 .type = QEMU_OPT_BOOL,
378 },{
379 .name = "ipv6",
380 .type = QEMU_OPT_BOOL,
381 },{
382 .name = "password",
383 .type = QEMU_OPT_STRING,
384 },{
385 .name = "disable-ticketing",
386 .type = QEMU_OPT_BOOL,
387 },{
388 .name = "x509-dir",
389 .type = QEMU_OPT_STRING,
390 },{
391 .name = "x509-key-file",
392 .type = QEMU_OPT_STRING,
393 },{
394 .name = "x509-key-password",
395 .type = QEMU_OPT_STRING,
396 },{
397 .name = "x509-cert-file",
398 .type = QEMU_OPT_STRING,
399 },{
400 .name = "x509-cacert-file",
401 .type = QEMU_OPT_STRING,
402 },{
403 .name = "x509-dh-key-file",
404 .type = QEMU_OPT_STRING,
405 },{
406 .name = "tls-ciphers",
407 .type = QEMU_OPT_STRING,
408 },{
409 .name = "tls-channel",
410 .type = QEMU_OPT_STRING,
411 },{
412 .name = "plaintext-channel",
413 .type = QEMU_OPT_STRING,
414 },{
415 .name = "image-compression",
416 .type = QEMU_OPT_STRING,
417 },{
418 .name = "jpeg-wan-compression",
419 .type = QEMU_OPT_STRING,
420 },{
421 .name = "zlib-glz-wan-compression",
422 .type = QEMU_OPT_STRING,
423 },{
424 .name = "streaming-video",
425 .type = QEMU_OPT_STRING,
426 },{
427 .name = "agent-mouse",
428 .type = QEMU_OPT_BOOL,
429 },{
430 .name = "playback-compression",
431 .type = QEMU_OPT_BOOL,
432 },
433 { /* end if list */ }
434 },
435 };
436
437 QemuOptsList qemu_option_rom_opts = {
438 .name = "option-rom",
439 .implied_opt_name = "romfile",
440 .head = QTAILQ_HEAD_INITIALIZER(qemu_option_rom_opts.head),
441 .desc = {
442 {
443 .name = "bootindex",
444 .type = QEMU_OPT_NUMBER,
445 }, {
446 .name = "romfile",
447 .type = QEMU_OPT_STRING,
448 },
449 { /* end if list */ }
450 },
451 };
452
453 static QemuOptsList *vm_config_groups[32] = {
454 &qemu_drive_opts,
455 &qemu_chardev_opts,
456 &qemu_device_opts,
457 &qemu_netdev_opts,
458 &qemu_net_opts,
459 &qemu_rtc_opts,
460 &qemu_global_opts,
461 &qemu_mon_opts,
462 &qemu_cpudef_opts,
463 #ifdef CONFIG_SIMPLE_TRACE
464 &qemu_trace_opts,
465 #endif
466 &qemu_option_rom_opts,
467 NULL,
468 };
469
find_list(QemuOptsList ** lists,const char * group)470 static QemuOptsList *find_list(QemuOptsList **lists, const char *group)
471 {
472 int i;
473
474 for (i = 0; lists[i] != NULL; i++) {
475 if (strcmp(lists[i]->name, group) == 0)
476 break;
477 }
478 if (lists[i] == NULL) {
479 error_report("there is no option group \"%s\"", group);
480 }
481 return lists[i];
482 }
483
qemu_find_opts(const char * group)484 QemuOptsList *qemu_find_opts(const char *group)
485 {
486 return find_list(vm_config_groups, group);
487 }
488
qemu_add_opts(QemuOptsList * list)489 void qemu_add_opts(QemuOptsList *list)
490 {
491 int entries, i;
492
493 entries = ARRAY_SIZE(vm_config_groups);
494 entries--; /* keep list NULL terminated */
495 for (i = 0; i < entries; i++) {
496 if (vm_config_groups[i] == NULL) {
497 vm_config_groups[i] = list;
498 return;
499 }
500 }
501 fprintf(stderr, "ran out of space in vm_config_groups");
502 abort();
503 }
504
qemu_set_option(const char * str)505 int qemu_set_option(const char *str)
506 {
507 char group[64], id[64], arg[64];
508 QemuOptsList *list;
509 QemuOpts *opts;
510 int rc, offset;
511
512 rc = sscanf(str, "%63[^.].%63[^.].%63[^=]%n", group, id, arg, &offset);
513 if (rc < 3 || str[offset] != '=') {
514 error_report("can't parse: \"%s\"", str);
515 return -1;
516 }
517
518 list = qemu_find_opts(group);
519 if (list == NULL) {
520 return -1;
521 }
522
523 opts = qemu_opts_find(list, id);
524 if (!opts) {
525 error_report("there is no %s \"%s\" defined",
526 list->name, id);
527 return -1;
528 }
529
530 if (qemu_opt_set(opts, arg, str+offset+1) == -1) {
531 return -1;
532 }
533 return 0;
534 }
535
qemu_global_option(const char * str)536 int qemu_global_option(const char *str)
537 {
538 char driver[64], property[64];
539 QemuOpts *opts;
540 int rc, offset;
541
542 rc = sscanf(str, "%63[^.].%63[^=]%n", driver, property, &offset);
543 if (rc < 2 || str[offset] != '=') {
544 error_report("can't parse: \"%s\"", str);
545 return -1;
546 }
547
548 opts = qemu_opts_create(&qemu_global_opts, NULL, 0);
549 qemu_opt_set(opts, "driver", driver);
550 qemu_opt_set(opts, "property", property);
551 qemu_opt_set(opts, "value", str+offset+1);
552 return 0;
553 }
554
555 struct ConfigWriteData {
556 QemuOptsList *list;
557 FILE *fp;
558 };
559
config_write_opt(const char * name,const char * value,void * opaque)560 static int config_write_opt(const char *name, const char *value, void *opaque)
561 {
562 struct ConfigWriteData *data = opaque;
563
564 fprintf(data->fp, " %s = \"%s\"\n", name, value);
565 return 0;
566 }
567
config_write_opts(QemuOpts * opts,void * opaque)568 static int config_write_opts(QemuOpts *opts, void *opaque)
569 {
570 struct ConfigWriteData *data = opaque;
571 const char *id = qemu_opts_id(opts);
572
573 if (id) {
574 fprintf(data->fp, "[%s \"%s\"]\n", data->list->name, id);
575 } else {
576 fprintf(data->fp, "[%s]\n", data->list->name);
577 }
578 qemu_opt_foreach(opts, config_write_opt, data, 0);
579 fprintf(data->fp, "\n");
580 return 0;
581 }
582
qemu_config_write(FILE * fp)583 void qemu_config_write(FILE *fp)
584 {
585 struct ConfigWriteData data = { .fp = fp };
586 QemuOptsList **lists = vm_config_groups;
587 int i;
588
589 fprintf(fp, "# qemu config file\n\n");
590 for (i = 0; lists[i] != NULL; i++) {
591 data.list = lists[i];
592 qemu_opts_foreach(data.list, config_write_opts, &data, 0);
593 }
594 }
595
qemu_config_parse(FILE * fp,QemuOptsList ** lists,const char * fname)596 int qemu_config_parse(FILE *fp, QemuOptsList **lists, const char *fname)
597 {
598 char line[1024], group[64], id[64], arg[64], value[1024];
599 Location loc;
600 QemuOptsList *list = NULL;
601 QemuOpts *opts = NULL;
602 int res = -1, lno = 0;
603
604 loc_push_none(&loc);
605 while (fgets(line, sizeof(line), fp) != NULL) {
606 loc_set_file(fname, ++lno);
607 if (line[0] == '\n') {
608 /* skip empty lines */
609 continue;
610 }
611 if (line[0] == '#') {
612 /* comment */
613 continue;
614 }
615 if (sscanf(line, "[%63s \"%63[^\"]\"]", group, id) == 2) {
616 /* group with id */
617 list = find_list(lists, group);
618 if (list == NULL)
619 goto out;
620 opts = qemu_opts_create(list, id, 1);
621 continue;
622 }
623 if (sscanf(line, "[%63[^]]]", group) == 1) {
624 /* group without id */
625 list = find_list(lists, group);
626 if (list == NULL)
627 goto out;
628 opts = qemu_opts_create(list, NULL, 0);
629 continue;
630 }
631 if (sscanf(line, " %63s = \"%1023[^\"]\"", arg, value) == 2) {
632 /* arg = value */
633 if (opts == NULL) {
634 error_report("no group defined");
635 goto out;
636 }
637 if (qemu_opt_set(opts, arg, value) != 0) {
638 goto out;
639 }
640 continue;
641 }
642 error_report("parse error");
643 goto out;
644 }
645 if (ferror(fp)) {
646 error_report("error reading file");
647 goto out;
648 }
649 res = 0;
650 out:
651 loc_pop(&loc);
652 return res;
653 }
654
qemu_read_config_file(const char * filename)655 int qemu_read_config_file(const char *filename)
656 {
657 FILE *f = fopen(filename, "r");
658 int ret;
659
660 if (f == NULL) {
661 return -errno;
662 }
663
664 ret = qemu_config_parse(f, vm_config_groups, filename);
665 fclose(f);
666
667 if (ret == 0) {
668 return 0;
669 } else {
670 return -EINVAL;
671 }
672 }
673