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