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Commit | Line | Data |
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7282a033 | 1 | #include "qemu-common.h" |
1de7afc9 PB |
2 | #include "qemu/error-report.h" |
3 | #include "qemu/option.h" | |
4 | #include "qemu/config-file.h" | |
b4a42f81 | 5 | #include "qapi/qmp/qerror.h" |
7b1b5d19 | 6 | #include "qapi/error.h" |
1f8f987d | 7 | #include "qmp-commands.h" |
7282a033 | 8 | |
4d454574 | 9 | static QemuOptsList *vm_config_groups[32]; |
968854c8 | 10 | static QemuOptsList *drive_config_groups[4]; |
d058fe03 | 11 | |
2ac20613 LC |
12 | static QemuOptsList *find_list(QemuOptsList **lists, const char *group, |
13 | Error **errp) | |
ddc97855 GH |
14 | { |
15 | int i; | |
16 | ||
17 | for (i = 0; lists[i] != NULL; i++) { | |
18 | if (strcmp(lists[i]->name, group) == 0) | |
19 | break; | |
20 | } | |
21 | if (lists[i] == NULL) { | |
f231b88d | 22 | error_setg(errp, "There is no option group '%s'", group); |
ddc97855 GH |
23 | } |
24 | return lists[i]; | |
25 | } | |
26 | ||
490b648e KW |
27 | QemuOptsList *qemu_find_opts(const char *group) |
28 | { | |
2ac20613 LC |
29 | QemuOptsList *ret; |
30 | Error *local_err = NULL; | |
31 | ||
32 | ret = find_list(vm_config_groups, group, &local_err); | |
84d18f06 | 33 | if (local_err) { |
565f65d2 | 34 | error_report_err(local_err); |
2ac20613 LC |
35 | } |
36 | ||
37 | return ret; | |
490b648e KW |
38 | } |
39 | ||
e96e5ae8 PB |
40 | QemuOpts *qemu_find_opts_singleton(const char *group) |
41 | { | |
42 | QemuOptsList *list; | |
43 | QemuOpts *opts; | |
44 | ||
45 | list = qemu_find_opts(group); | |
46 | assert(list); | |
47 | opts = qemu_opts_find(list, NULL); | |
48 | if (!opts) { | |
49 | opts = qemu_opts_create(list, NULL, 0, &error_abort); | |
50 | } | |
51 | return opts; | |
52 | } | |
53 | ||
1f8f987d AK |
54 | static CommandLineParameterInfoList *query_option_descs(const QemuOptDesc *desc) |
55 | { | |
56 | CommandLineParameterInfoList *param_list = NULL, *entry; | |
57 | CommandLineParameterInfo *info; | |
58 | int i; | |
59 | ||
60 | for (i = 0; desc[i].name != NULL; i++) { | |
61 | info = g_malloc0(sizeof(*info)); | |
62 | info->name = g_strdup(desc[i].name); | |
63 | ||
64 | switch (desc[i].type) { | |
65 | case QEMU_OPT_STRING: | |
66 | info->type = COMMAND_LINE_PARAMETER_TYPE_STRING; | |
67 | break; | |
68 | case QEMU_OPT_BOOL: | |
69 | info->type = COMMAND_LINE_PARAMETER_TYPE_BOOLEAN; | |
70 | break; | |
71 | case QEMU_OPT_NUMBER: | |
72 | info->type = COMMAND_LINE_PARAMETER_TYPE_NUMBER; | |
73 | break; | |
74 | case QEMU_OPT_SIZE: | |
75 | info->type = COMMAND_LINE_PARAMETER_TYPE_SIZE; | |
76 | break; | |
77 | } | |
78 | ||
79 | if (desc[i].help) { | |
80 | info->has_help = true; | |
81 | info->help = g_strdup(desc[i].help); | |
82 | } | |
e36af94f CL |
83 | if (desc[i].def_value_str) { |
84 | info->has_q_default = true; | |
85 | info->q_default = g_strdup(desc[i].def_value_str); | |
86 | } | |
1f8f987d AK |
87 | |
88 | entry = g_malloc0(sizeof(*entry)); | |
89 | entry->value = info; | |
90 | entry->next = param_list; | |
91 | param_list = entry; | |
92 | } | |
93 | ||
94 | return param_list; | |
95 | } | |
96 | ||
968854c8 AK |
97 | /* remove repeated entry from the info list */ |
98 | static void cleanup_infolist(CommandLineParameterInfoList *head) | |
99 | { | |
100 | CommandLineParameterInfoList *pre_entry, *cur, *del_entry; | |
101 | ||
102 | cur = head; | |
103 | while (cur->next) { | |
104 | pre_entry = head; | |
105 | while (pre_entry != cur->next) { | |
106 | if (!strcmp(pre_entry->value->name, cur->next->value->name)) { | |
107 | del_entry = cur->next; | |
108 | cur->next = cur->next->next; | |
109 | g_free(del_entry); | |
110 | break; | |
111 | } | |
112 | pre_entry = pre_entry->next; | |
113 | } | |
114 | cur = cur->next; | |
115 | } | |
116 | } | |
117 | ||
118 | /* merge the description items of two parameter infolists */ | |
119 | static void connect_infolist(CommandLineParameterInfoList *head, | |
120 | CommandLineParameterInfoList *new) | |
121 | { | |
122 | CommandLineParameterInfoList *cur; | |
123 | ||
124 | cur = head; | |
125 | while (cur->next) { | |
126 | cur = cur->next; | |
127 | } | |
128 | cur->next = new; | |
129 | } | |
130 | ||
131 | /* access all the local QemuOptsLists for drive option */ | |
132 | static CommandLineParameterInfoList *get_drive_infolist(void) | |
133 | { | |
134 | CommandLineParameterInfoList *head = NULL, *cur; | |
135 | int i; | |
136 | ||
137 | for (i = 0; drive_config_groups[i] != NULL; i++) { | |
138 | if (!head) { | |
139 | head = query_option_descs(drive_config_groups[i]->desc); | |
140 | } else { | |
141 | cur = query_option_descs(drive_config_groups[i]->desc); | |
142 | connect_infolist(head, cur); | |
143 | } | |
144 | } | |
145 | cleanup_infolist(head); | |
146 | ||
147 | return head; | |
148 | } | |
149 | ||
0a7cf217 MA |
150 | /* restore machine options that are now machine's properties */ |
151 | static QemuOptsList machine_opts = { | |
152 | .merge_lists = true, | |
153 | .head = QTAILQ_HEAD_INITIALIZER(machine_opts.head), | |
154 | .desc = { | |
155 | { | |
156 | .name = "type", | |
157 | .type = QEMU_OPT_STRING, | |
158 | .help = "emulated machine" | |
159 | },{ | |
160 | .name = "accel", | |
161 | .type = QEMU_OPT_STRING, | |
162 | .help = "accelerator list", | |
163 | },{ | |
164 | .name = "kernel_irqchip", | |
165 | .type = QEMU_OPT_BOOL, | |
166 | .help = "use KVM in-kernel irqchip", | |
167 | },{ | |
168 | .name = "kvm_shadow_mem", | |
169 | .type = QEMU_OPT_SIZE, | |
170 | .help = "KVM shadow MMU size", | |
171 | },{ | |
172 | .name = "kernel", | |
173 | .type = QEMU_OPT_STRING, | |
174 | .help = "Linux kernel image file", | |
175 | },{ | |
176 | .name = "initrd", | |
177 | .type = QEMU_OPT_STRING, | |
178 | .help = "Linux initial ramdisk file", | |
179 | },{ | |
180 | .name = "append", | |
181 | .type = QEMU_OPT_STRING, | |
182 | .help = "Linux kernel command line", | |
183 | },{ | |
184 | .name = "dtb", | |
185 | .type = QEMU_OPT_STRING, | |
186 | .help = "Linux kernel device tree file", | |
187 | },{ | |
188 | .name = "dumpdtb", | |
189 | .type = QEMU_OPT_STRING, | |
190 | .help = "Dump current dtb to a file and quit", | |
191 | },{ | |
192 | .name = "phandle_start", | |
193 | .type = QEMU_OPT_NUMBER, | |
194 | .help = "The first phandle ID we may generate dynamically", | |
195 | },{ | |
196 | .name = "dt_compatible", | |
197 | .type = QEMU_OPT_STRING, | |
198 | .help = "Overrides the \"compatible\" property of the dt root node", | |
199 | },{ | |
200 | .name = "dump-guest-core", | |
201 | .type = QEMU_OPT_BOOL, | |
202 | .help = "Include guest memory in a core dump", | |
203 | },{ | |
204 | .name = "mem-merge", | |
205 | .type = QEMU_OPT_BOOL, | |
206 | .help = "enable/disable memory merge support", | |
207 | },{ | |
208 | .name = "usb", | |
209 | .type = QEMU_OPT_BOOL, | |
210 | .help = "Set on/off to enable/disable usb", | |
211 | },{ | |
212 | .name = "firmware", | |
213 | .type = QEMU_OPT_STRING, | |
214 | .help = "firmware image", | |
215 | },{ | |
216 | .name = "iommu", | |
217 | .type = QEMU_OPT_BOOL, | |
218 | .help = "Set on/off to enable/disable Intel IOMMU (VT-d)", | |
219 | },{ | |
220 | .name = "suppress-vmdesc", | |
221 | .type = QEMU_OPT_BOOL, | |
222 | .help = "Set on to disable self-describing migration", | |
223 | }, | |
224 | { /* End of list */ } | |
225 | } | |
226 | }; | |
227 | ||
1f8f987d AK |
228 | CommandLineOptionInfoList *qmp_query_command_line_options(bool has_option, |
229 | const char *option, | |
230 | Error **errp) | |
231 | { | |
232 | CommandLineOptionInfoList *conf_list = NULL, *entry; | |
233 | CommandLineOptionInfo *info; | |
234 | int i; | |
235 | ||
236 | for (i = 0; vm_config_groups[i] != NULL; i++) { | |
237 | if (!has_option || !strcmp(option, vm_config_groups[i]->name)) { | |
238 | info = g_malloc0(sizeof(*info)); | |
239 | info->option = g_strdup(vm_config_groups[i]->name); | |
968854c8 AK |
240 | if (!strcmp("drive", vm_config_groups[i]->name)) { |
241 | info->parameters = get_drive_infolist(); | |
0a7cf217 MA |
242 | } else if (!strcmp("machine", vm_config_groups[i]->name)) { |
243 | info->parameters = query_option_descs(machine_opts.desc); | |
968854c8 AK |
244 | } else { |
245 | info->parameters = | |
246 | query_option_descs(vm_config_groups[i]->desc); | |
247 | } | |
1f8f987d AK |
248 | entry = g_malloc0(sizeof(*entry)); |
249 | entry->value = info; | |
250 | entry->next = conf_list; | |
251 | conf_list = entry; | |
252 | } | |
253 | } | |
254 | ||
255 | if (conf_list == NULL) { | |
256 | error_setg(errp, "invalid option name: %s", option); | |
257 | } | |
258 | ||
259 | return conf_list; | |
260 | } | |
261 | ||
60d5666f LC |
262 | QemuOptsList *qemu_find_opts_err(const char *group, Error **errp) |
263 | { | |
264 | return find_list(vm_config_groups, group, errp); | |
265 | } | |
266 | ||
968854c8 AK |
267 | void qemu_add_drive_opts(QemuOptsList *list) |
268 | { | |
269 | int entries, i; | |
270 | ||
271 | entries = ARRAY_SIZE(drive_config_groups); | |
272 | entries--; /* keep list NULL terminated */ | |
273 | for (i = 0; i < entries; i++) { | |
274 | if (drive_config_groups[i] == NULL) { | |
275 | drive_config_groups[i] = list; | |
276 | return; | |
277 | } | |
278 | } | |
279 | fprintf(stderr, "ran out of space in drive_config_groups"); | |
280 | abort(); | |
281 | } | |
282 | ||
dfe795e7 GH |
283 | void qemu_add_opts(QemuOptsList *list) |
284 | { | |
285 | int entries, i; | |
286 | ||
287 | entries = ARRAY_SIZE(vm_config_groups); | |
288 | entries--; /* keep list NULL terminated */ | |
289 | for (i = 0; i < entries; i++) { | |
290 | if (vm_config_groups[i] == NULL) { | |
291 | vm_config_groups[i] = list; | |
292 | return; | |
293 | } | |
294 | } | |
295 | fprintf(stderr, "ran out of space in vm_config_groups"); | |
296 | abort(); | |
297 | } | |
298 | ||
d058fe03 GH |
299 | int qemu_set_option(const char *str) |
300 | { | |
f43e47db | 301 | Error *local_err = NULL; |
d058fe03 | 302 | char group[64], id[64], arg[64]; |
ddc97855 | 303 | QemuOptsList *list; |
d058fe03 | 304 | QemuOpts *opts; |
ddc97855 | 305 | int rc, offset; |
d058fe03 GH |
306 | |
307 | rc = sscanf(str, "%63[^.].%63[^.].%63[^=]%n", group, id, arg, &offset); | |
308 | if (rc < 3 || str[offset] != '=') { | |
1ecda02b | 309 | error_report("can't parse: \"%s\"", str); |
d058fe03 GH |
310 | return -1; |
311 | } | |
312 | ||
304329ee | 313 | list = qemu_find_opts(group); |
ddc97855 | 314 | if (list == NULL) { |
d058fe03 GH |
315 | return -1; |
316 | } | |
317 | ||
ddc97855 | 318 | opts = qemu_opts_find(list, id); |
d058fe03 | 319 | if (!opts) { |
1ecda02b MA |
320 | error_report("there is no %s \"%s\" defined", |
321 | list->name, id); | |
d058fe03 GH |
322 | return -1; |
323 | } | |
324 | ||
f43e47db MA |
325 | qemu_opt_set(opts, arg, str + offset + 1, &local_err); |
326 | if (local_err) { | |
327 | error_report_err(local_err); | |
d058fe03 GH |
328 | return -1; |
329 | } | |
330 | return 0; | |
331 | } | |
332 | ||
9d993394 GH |
333 | struct ConfigWriteData { |
334 | QemuOptsList *list; | |
335 | FILE *fp; | |
336 | }; | |
337 | ||
338 | static int config_write_opt(const char *name, const char *value, void *opaque) | |
339 | { | |
340 | struct ConfigWriteData *data = opaque; | |
341 | ||
342 | fprintf(data->fp, " %s = \"%s\"\n", name, value); | |
343 | return 0; | |
344 | } | |
345 | ||
346 | static int config_write_opts(QemuOpts *opts, void *opaque) | |
347 | { | |
348 | struct ConfigWriteData *data = opaque; | |
349 | const char *id = qemu_opts_id(opts); | |
350 | ||
351 | if (id) { | |
352 | fprintf(data->fp, "[%s \"%s\"]\n", data->list->name, id); | |
353 | } else { | |
354 | fprintf(data->fp, "[%s]\n", data->list->name); | |
355 | } | |
356 | qemu_opt_foreach(opts, config_write_opt, data, 0); | |
357 | fprintf(data->fp, "\n"); | |
358 | return 0; | |
359 | } | |
360 | ||
361 | void qemu_config_write(FILE *fp) | |
362 | { | |
363 | struct ConfigWriteData data = { .fp = fp }; | |
490b648e | 364 | QemuOptsList **lists = vm_config_groups; |
9d993394 GH |
365 | int i; |
366 | ||
367 | fprintf(fp, "# qemu config file\n\n"); | |
368 | for (i = 0; lists[i] != NULL; i++) { | |
369 | data.list = lists[i]; | |
a4c7367f | 370 | qemu_opts_foreach(data.list, config_write_opts, &data); |
9d993394 GH |
371 | } |
372 | } | |
42262ba8 | 373 | |
490b648e | 374 | int qemu_config_parse(FILE *fp, QemuOptsList **lists, const char *fname) |
42262ba8 GH |
375 | { |
376 | char line[1024], group[64], id[64], arg[64], value[1024]; | |
cf5a65aa | 377 | Location loc; |
42262ba8 | 378 | QemuOptsList *list = NULL; |
2ac20613 | 379 | Error *local_err = NULL; |
42262ba8 | 380 | QemuOpts *opts = NULL; |
cf5a65aa | 381 | int res = -1, lno = 0; |
42262ba8 | 382 | |
cf5a65aa | 383 | loc_push_none(&loc); |
42262ba8 | 384 | while (fgets(line, sizeof(line), fp) != NULL) { |
cf5a65aa | 385 | loc_set_file(fname, ++lno); |
42262ba8 GH |
386 | if (line[0] == '\n') { |
387 | /* skip empty lines */ | |
388 | continue; | |
389 | } | |
390 | if (line[0] == '#') { | |
391 | /* comment */ | |
392 | continue; | |
393 | } | |
394 | if (sscanf(line, "[%63s \"%63[^\"]\"]", group, id) == 2) { | |
395 | /* group with id */ | |
2ac20613 | 396 | list = find_list(lists, group, &local_err); |
84d18f06 | 397 | if (local_err) { |
565f65d2 | 398 | error_report_err(local_err); |
cf5a65aa | 399 | goto out; |
2ac20613 | 400 | } |
8be7e7e4 | 401 | opts = qemu_opts_create(list, id, 1, NULL); |
42262ba8 GH |
402 | continue; |
403 | } | |
404 | if (sscanf(line, "[%63[^]]]", group) == 1) { | |
405 | /* group without id */ | |
2ac20613 | 406 | list = find_list(lists, group, &local_err); |
84d18f06 | 407 | if (local_err) { |
565f65d2 | 408 | error_report_err(local_err); |
cf5a65aa | 409 | goto out; |
2ac20613 | 410 | } |
87ea75d5 | 411 | opts = qemu_opts_create(list, NULL, 0, &error_abort); |
42262ba8 GH |
412 | continue; |
413 | } | |
d9f7e29e EH |
414 | value[0] = '\0'; |
415 | if (sscanf(line, " %63s = \"%1023[^\"]\"", arg, value) == 2 || | |
416 | sscanf(line, " %63s = \"\"", arg) == 1) { | |
42262ba8 GH |
417 | /* arg = value */ |
418 | if (opts == NULL) { | |
cf5a65aa MA |
419 | error_report("no group defined"); |
420 | goto out; | |
42262ba8 | 421 | } |
f43e47db MA |
422 | qemu_opt_set(opts, arg, value, &local_err); |
423 | if (local_err) { | |
424 | error_report_err(local_err); | |
cf5a65aa | 425 | goto out; |
42262ba8 GH |
426 | } |
427 | continue; | |
428 | } | |
cf5a65aa MA |
429 | error_report("parse error"); |
430 | goto out; | |
42262ba8 | 431 | } |
ef82516d MA |
432 | if (ferror(fp)) { |
433 | error_report("error reading file"); | |
434 | goto out; | |
435 | } | |
cf5a65aa MA |
436 | res = 0; |
437 | out: | |
438 | loc_pop(&loc); | |
439 | return res; | |
42262ba8 | 440 | } |
dcfb0939 KW |
441 | |
442 | int qemu_read_config_file(const char *filename) | |
443 | { | |
444 | FILE *f = fopen(filename, "r"); | |
019e78ba KW |
445 | int ret; |
446 | ||
dcfb0939 KW |
447 | if (f == NULL) { |
448 | return -errno; | |
449 | } | |
450 | ||
019e78ba | 451 | ret = qemu_config_parse(f, vm_config_groups, filename); |
dcfb0939 KW |
452 | fclose(f); |
453 | ||
019e78ba KW |
454 | if (ret == 0) { |
455 | return 0; | |
456 | } else { | |
457 | return -EINVAL; | |
458 | } | |
dcfb0939 | 459 | } |
adf5c449 HR |
460 | |
461 | static void config_parse_qdict_section(QDict *options, QemuOptsList *opts, | |
462 | Error **errp) | |
463 | { | |
464 | QemuOpts *subopts; | |
465 | QDict *subqdict; | |
466 | QList *list = NULL; | |
467 | Error *local_err = NULL; | |
468 | size_t orig_size, enum_size; | |
469 | char *prefix; | |
470 | ||
471 | prefix = g_strdup_printf("%s.", opts->name); | |
472 | qdict_extract_subqdict(options, &subqdict, prefix); | |
473 | g_free(prefix); | |
474 | orig_size = qdict_size(subqdict); | |
475 | if (!orig_size) { | |
476 | goto out; | |
477 | } | |
478 | ||
479 | subopts = qemu_opts_create(opts, NULL, 0, &local_err); | |
84d18f06 | 480 | if (local_err) { |
adf5c449 HR |
481 | error_propagate(errp, local_err); |
482 | goto out; | |
483 | } | |
484 | ||
485 | qemu_opts_absorb_qdict(subopts, subqdict, &local_err); | |
84d18f06 | 486 | if (local_err) { |
adf5c449 HR |
487 | error_propagate(errp, local_err); |
488 | goto out; | |
489 | } | |
490 | ||
491 | enum_size = qdict_size(subqdict); | |
492 | if (enum_size < orig_size && enum_size) { | |
493 | error_setg(errp, "Unknown option '%s' for [%s]", | |
494 | qdict_first(subqdict)->key, opts->name); | |
495 | goto out; | |
496 | } | |
497 | ||
498 | if (enum_size) { | |
499 | /* Multiple, enumerated sections */ | |
500 | QListEntry *list_entry; | |
501 | unsigned i = 0; | |
502 | ||
503 | /* Not required anymore */ | |
504 | qemu_opts_del(subopts); | |
505 | ||
506 | qdict_array_split(subqdict, &list); | |
507 | if (qdict_size(subqdict)) { | |
508 | error_setg(errp, "Unused option '%s' for [%s]", | |
509 | qdict_first(subqdict)->key, opts->name); | |
510 | goto out; | |
511 | } | |
512 | ||
513 | QLIST_FOREACH_ENTRY(list, list_entry) { | |
514 | QDict *section = qobject_to_qdict(qlist_entry_obj(list_entry)); | |
515 | char *opt_name; | |
516 | ||
ae39c4b2 HR |
517 | if (!section) { |
518 | error_setg(errp, "[%s] section (index %u) does not consist of " | |
519 | "keys", opts->name, i); | |
520 | goto out; | |
521 | } | |
522 | ||
adf5c449 HR |
523 | opt_name = g_strdup_printf("%s.%u", opts->name, i++); |
524 | subopts = qemu_opts_create(opts, opt_name, 1, &local_err); | |
525 | g_free(opt_name); | |
84d18f06 | 526 | if (local_err) { |
adf5c449 HR |
527 | error_propagate(errp, local_err); |
528 | goto out; | |
529 | } | |
530 | ||
531 | qemu_opts_absorb_qdict(subopts, section, &local_err); | |
84d18f06 | 532 | if (local_err) { |
adf5c449 HR |
533 | error_propagate(errp, local_err); |
534 | qemu_opts_del(subopts); | |
535 | goto out; | |
536 | } | |
537 | ||
538 | if (qdict_size(section)) { | |
539 | error_setg(errp, "[%s] section doesn't support the option '%s'", | |
540 | opts->name, qdict_first(section)->key); | |
541 | qemu_opts_del(subopts); | |
542 | goto out; | |
543 | } | |
544 | } | |
545 | } | |
546 | ||
547 | out: | |
548 | QDECREF(subqdict); | |
549 | QDECREF(list); | |
550 | } | |
551 | ||
552 | void qemu_config_parse_qdict(QDict *options, QemuOptsList **lists, | |
553 | Error **errp) | |
554 | { | |
555 | int i; | |
556 | Error *local_err = NULL; | |
557 | ||
558 | for (i = 0; lists[i]; i++) { | |
559 | config_parse_qdict_section(options, lists[i], &local_err); | |
84d18f06 | 560 | if (local_err) { |
adf5c449 HR |
561 | error_propagate(errp, local_err); |
562 | return; | |
563 | } | |
564 | } | |
565 | } |