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Commit | Line | Data |
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aafd7584 | 1 | #include "qemu/osdep.h" |
609f45ea | 2 | #include "block/qdict.h" /* for qdict_extract_subqdict() */ |
e688df6b | 3 | #include "qapi/error.h" |
112ed241 | 4 | #include "qapi/qapi-commands-misc.h" |
37701411 | 5 | #include "qapi/qmp/qerror.h" |
452fcdbc | 6 | #include "qapi/qmp/qdict.h" |
47e6b297 | 7 | #include "qapi/qmp/qlist.h" |
1de7afc9 PB |
8 | #include "qemu/error-report.h" |
9 | #include "qemu/option.h" | |
10 | #include "qemu/config-file.h" | |
7282a033 | 11 | |
1ceaefbd | 12 | static QemuOptsList *vm_config_groups[48]; |
c5f3014b | 13 | static QemuOptsList *drive_config_groups[5]; |
d058fe03 | 14 | |
2ac20613 LC |
15 | static QemuOptsList *find_list(QemuOptsList **lists, const char *group, |
16 | Error **errp) | |
ddc97855 GH |
17 | { |
18 | int i; | |
19 | ||
632a8873 | 20 | qemu_load_module_for_opts(group); |
ddc97855 GH |
21 | for (i = 0; lists[i] != NULL; i++) { |
22 | if (strcmp(lists[i]->name, group) == 0) | |
23 | break; | |
24 | } | |
25 | if (lists[i] == NULL) { | |
f231b88d | 26 | error_setg(errp, "There is no option group '%s'", group); |
ddc97855 GH |
27 | } |
28 | return lists[i]; | |
29 | } | |
30 | ||
490b648e KW |
31 | QemuOptsList *qemu_find_opts(const char *group) |
32 | { | |
2ac20613 LC |
33 | QemuOptsList *ret; |
34 | Error *local_err = NULL; | |
35 | ||
36 | ret = find_list(vm_config_groups, group, &local_err); | |
84d18f06 | 37 | if (local_err) { |
565f65d2 | 38 | error_report_err(local_err); |
2ac20613 LC |
39 | } |
40 | ||
41 | return ret; | |
490b648e KW |
42 | } |
43 | ||
e96e5ae8 PB |
44 | QemuOpts *qemu_find_opts_singleton(const char *group) |
45 | { | |
46 | QemuOptsList *list; | |
47 | QemuOpts *opts; | |
48 | ||
49 | list = qemu_find_opts(group); | |
50 | assert(list); | |
51 | opts = qemu_opts_find(list, NULL); | |
52 | if (!opts) { | |
53 | opts = qemu_opts_create(list, NULL, 0, &error_abort); | |
54 | } | |
55 | return opts; | |
56 | } | |
57 | ||
1f8f987d AK |
58 | static CommandLineParameterInfoList *query_option_descs(const QemuOptDesc *desc) |
59 | { | |
54aa3de7 | 60 | CommandLineParameterInfoList *param_list = NULL; |
1f8f987d AK |
61 | CommandLineParameterInfo *info; |
62 | int i; | |
63 | ||
64 | for (i = 0; desc[i].name != NULL; i++) { | |
65 | info = g_malloc0(sizeof(*info)); | |
66 | info->name = g_strdup(desc[i].name); | |
67 | ||
68 | switch (desc[i].type) { | |
69 | case QEMU_OPT_STRING: | |
70 | info->type = COMMAND_LINE_PARAMETER_TYPE_STRING; | |
71 | break; | |
72 | case QEMU_OPT_BOOL: | |
73 | info->type = COMMAND_LINE_PARAMETER_TYPE_BOOLEAN; | |
74 | break; | |
75 | case QEMU_OPT_NUMBER: | |
76 | info->type = COMMAND_LINE_PARAMETER_TYPE_NUMBER; | |
77 | break; | |
78 | case QEMU_OPT_SIZE: | |
79 | info->type = COMMAND_LINE_PARAMETER_TYPE_SIZE; | |
80 | break; | |
81 | } | |
82 | ||
83 | if (desc[i].help) { | |
84 | info->has_help = true; | |
85 | info->help = g_strdup(desc[i].help); | |
86 | } | |
e36af94f CL |
87 | if (desc[i].def_value_str) { |
88 | info->has_q_default = true; | |
89 | info->q_default = g_strdup(desc[i].def_value_str); | |
90 | } | |
1f8f987d | 91 | |
54aa3de7 | 92 | QAPI_LIST_PREPEND(param_list, info); |
1f8f987d AK |
93 | } |
94 | ||
95 | return param_list; | |
96 | } | |
97 | ||
968854c8 AK |
98 | /* remove repeated entry from the info list */ |
99 | static void cleanup_infolist(CommandLineParameterInfoList *head) | |
100 | { | |
101 | CommandLineParameterInfoList *pre_entry, *cur, *del_entry; | |
102 | ||
103 | cur = head; | |
104 | while (cur->next) { | |
105 | pre_entry = head; | |
106 | while (pre_entry != cur->next) { | |
107 | if (!strcmp(pre_entry->value->name, cur->next->value->name)) { | |
108 | del_entry = cur->next; | |
109 | cur->next = cur->next->next; | |
b11e20fb MAL |
110 | del_entry->next = NULL; |
111 | qapi_free_CommandLineParameterInfoList(del_entry); | |
968854c8 AK |
112 | break; |
113 | } | |
114 | pre_entry = pre_entry->next; | |
115 | } | |
116 | cur = cur->next; | |
117 | } | |
118 | } | |
119 | ||
120 | /* merge the description items of two parameter infolists */ | |
121 | static void connect_infolist(CommandLineParameterInfoList *head, | |
122 | CommandLineParameterInfoList *new) | |
123 | { | |
124 | CommandLineParameterInfoList *cur; | |
125 | ||
126 | cur = head; | |
127 | while (cur->next) { | |
128 | cur = cur->next; | |
129 | } | |
130 | cur->next = new; | |
131 | } | |
132 | ||
133 | /* access all the local QemuOptsLists for drive option */ | |
134 | static CommandLineParameterInfoList *get_drive_infolist(void) | |
135 | { | |
136 | CommandLineParameterInfoList *head = NULL, *cur; | |
137 | int i; | |
138 | ||
139 | for (i = 0; drive_config_groups[i] != NULL; i++) { | |
140 | if (!head) { | |
141 | head = query_option_descs(drive_config_groups[i]->desc); | |
142 | } else { | |
143 | cur = query_option_descs(drive_config_groups[i]->desc); | |
144 | connect_infolist(head, cur); | |
145 | } | |
146 | } | |
147 | cleanup_infolist(head); | |
148 | ||
149 | return head; | |
150 | } | |
151 | ||
0a7cf217 MA |
152 | /* restore machine options that are now machine's properties */ |
153 | static QemuOptsList machine_opts = { | |
154 | .merge_lists = true, | |
155 | .head = QTAILQ_HEAD_INITIALIZER(machine_opts.head), | |
156 | .desc = { | |
157 | { | |
158 | .name = "type", | |
159 | .type = QEMU_OPT_STRING, | |
160 | .help = "emulated machine" | |
161 | },{ | |
162 | .name = "accel", | |
163 | .type = QEMU_OPT_STRING, | |
164 | .help = "accelerator list", | |
165 | },{ | |
166 | .name = "kernel_irqchip", | |
167 | .type = QEMU_OPT_BOOL, | |
168 | .help = "use KVM in-kernel irqchip", | |
169 | },{ | |
170 | .name = "kvm_shadow_mem", | |
171 | .type = QEMU_OPT_SIZE, | |
172 | .help = "KVM shadow MMU size", | |
173 | },{ | |
174 | .name = "kernel", | |
175 | .type = QEMU_OPT_STRING, | |
176 | .help = "Linux kernel image file", | |
177 | },{ | |
178 | .name = "initrd", | |
179 | .type = QEMU_OPT_STRING, | |
180 | .help = "Linux initial ramdisk file", | |
181 | },{ | |
182 | .name = "append", | |
183 | .type = QEMU_OPT_STRING, | |
184 | .help = "Linux kernel command line", | |
185 | },{ | |
186 | .name = "dtb", | |
187 | .type = QEMU_OPT_STRING, | |
188 | .help = "Linux kernel device tree file", | |
189 | },{ | |
190 | .name = "dumpdtb", | |
191 | .type = QEMU_OPT_STRING, | |
192 | .help = "Dump current dtb to a file and quit", | |
193 | },{ | |
194 | .name = "phandle_start", | |
195 | .type = QEMU_OPT_NUMBER, | |
196 | .help = "The first phandle ID we may generate dynamically", | |
197 | },{ | |
198 | .name = "dt_compatible", | |
199 | .type = QEMU_OPT_STRING, | |
200 | .help = "Overrides the \"compatible\" property of the dt root node", | |
201 | },{ | |
202 | .name = "dump-guest-core", | |
203 | .type = QEMU_OPT_BOOL, | |
204 | .help = "Include guest memory in a core dump", | |
205 | },{ | |
206 | .name = "mem-merge", | |
207 | .type = QEMU_OPT_BOOL, | |
208 | .help = "enable/disable memory merge support", | |
209 | },{ | |
210 | .name = "usb", | |
211 | .type = QEMU_OPT_BOOL, | |
212 | .help = "Set on/off to enable/disable usb", | |
213 | },{ | |
214 | .name = "firmware", | |
215 | .type = QEMU_OPT_STRING, | |
216 | .help = "firmware image", | |
217 | },{ | |
218 | .name = "iommu", | |
219 | .type = QEMU_OPT_BOOL, | |
220 | .help = "Set on/off to enable/disable Intel IOMMU (VT-d)", | |
221 | },{ | |
222 | .name = "suppress-vmdesc", | |
223 | .type = QEMU_OPT_BOOL, | |
224 | .help = "Set on to disable self-describing migration", | |
5bcfa0c5 TK |
225 | },{ |
226 | .name = "aes-key-wrap", | |
227 | .type = QEMU_OPT_BOOL, | |
228 | .help = "enable/disable AES key wrapping using the CPACF wrapping key", | |
229 | },{ | |
230 | .name = "dea-key-wrap", | |
231 | .type = QEMU_OPT_BOOL, | |
232 | .help = "enable/disable DEA key wrapping using the CPACF wrapping key", | |
5559716c FA |
233 | },{ |
234 | .name = "loadparm", | |
235 | .type = QEMU_OPT_STRING, | |
236 | .help = "Up to 8 chars in set of [A-Za-z0-9. ](lower case chars" | |
237 | " converted to upper case) to pass to machine" | |
238 | " loader, boot manager, and guest kernel", | |
0a7cf217 MA |
239 | }, |
240 | { /* End of list */ } | |
241 | } | |
242 | }; | |
243 | ||
1f8f987d AK |
244 | CommandLineOptionInfoList *qmp_query_command_line_options(bool has_option, |
245 | const char *option, | |
246 | Error **errp) | |
247 | { | |
54aa3de7 | 248 | CommandLineOptionInfoList *conf_list = NULL; |
1f8f987d AK |
249 | CommandLineOptionInfo *info; |
250 | int i; | |
251 | ||
252 | for (i = 0; vm_config_groups[i] != NULL; i++) { | |
253 | if (!has_option || !strcmp(option, vm_config_groups[i]->name)) { | |
254 | info = g_malloc0(sizeof(*info)); | |
255 | info->option = g_strdup(vm_config_groups[i]->name); | |
968854c8 AK |
256 | if (!strcmp("drive", vm_config_groups[i]->name)) { |
257 | info->parameters = get_drive_infolist(); | |
258 | } else { | |
259 | info->parameters = | |
260 | query_option_descs(vm_config_groups[i]->desc); | |
261 | } | |
54aa3de7 | 262 | QAPI_LIST_PREPEND(conf_list, info); |
1f8f987d AK |
263 | } |
264 | } | |
265 | ||
40e07370 SH |
266 | if (!has_option || !strcmp(option, "machine")) { |
267 | info = g_malloc0(sizeof(*info)); | |
268 | info->option = g_strdup("machine"); | |
269 | info->parameters = query_option_descs(machine_opts.desc); | |
270 | QAPI_LIST_PREPEND(conf_list, info); | |
271 | } | |
272 | ||
1f8f987d AK |
273 | if (conf_list == NULL) { |
274 | error_setg(errp, "invalid option name: %s", option); | |
275 | } | |
276 | ||
277 | return conf_list; | |
278 | } | |
279 | ||
60d5666f LC |
280 | QemuOptsList *qemu_find_opts_err(const char *group, Error **errp) |
281 | { | |
282 | return find_list(vm_config_groups, group, errp); | |
283 | } | |
284 | ||
968854c8 AK |
285 | void qemu_add_drive_opts(QemuOptsList *list) |
286 | { | |
287 | int entries, i; | |
288 | ||
289 | entries = ARRAY_SIZE(drive_config_groups); | |
290 | entries--; /* keep list NULL terminated */ | |
291 | for (i = 0; i < entries; i++) { | |
292 | if (drive_config_groups[i] == NULL) { | |
293 | drive_config_groups[i] = list; | |
294 | return; | |
295 | } | |
296 | } | |
297 | fprintf(stderr, "ran out of space in drive_config_groups"); | |
298 | abort(); | |
299 | } | |
300 | ||
dfe795e7 GH |
301 | void qemu_add_opts(QemuOptsList *list) |
302 | { | |
303 | int entries, i; | |
304 | ||
305 | entries = ARRAY_SIZE(vm_config_groups); | |
306 | entries--; /* keep list NULL terminated */ | |
307 | for (i = 0; i < entries; i++) { | |
308 | if (vm_config_groups[i] == NULL) { | |
309 | vm_config_groups[i] = list; | |
310 | return; | |
311 | } | |
312 | } | |
313 | fprintf(stderr, "ran out of space in vm_config_groups"); | |
314 | abort(); | |
315 | } | |
316 | ||
e5766d6e | 317 | /* Returns number of config groups on success, -errno on error */ |
37701411 PB |
318 | static int qemu_config_foreach(FILE *fp, QEMUConfigCB *cb, void *opaque, |
319 | const char *fname, Error **errp) | |
42262ba8 | 320 | { |
37701411 | 321 | char line[1024], prev_group[64], group[64], arg[64], value[1024]; |
cf5a65aa | 322 | Location loc; |
2ac20613 | 323 | Error *local_err = NULL; |
37701411 | 324 | QDict *qdict = NULL; |
e5766d6e EH |
325 | int res = -EINVAL, lno = 0; |
326 | int count = 0; | |
42262ba8 | 327 | |
cf5a65aa | 328 | loc_push_none(&loc); |
42262ba8 | 329 | while (fgets(line, sizeof(line), fp) != NULL) { |
37701411 | 330 | ++lno; |
42262ba8 GH |
331 | if (line[0] == '\n') { |
332 | /* skip empty lines */ | |
333 | continue; | |
334 | } | |
335 | if (line[0] == '#') { | |
336 | /* comment */ | |
337 | continue; | |
338 | } | |
37701411 PB |
339 | if (line[0] == '[') { |
340 | QDict *prev = qdict; | |
341 | if (sscanf(line, "[%63s \"%63[^\"]\"]", group, value) == 2) { | |
342 | qdict = qdict_new(); | |
343 | qdict_put_str(qdict, "id", value); | |
344 | count++; | |
345 | } else if (sscanf(line, "[%63[^]]]", group) == 1) { | |
346 | qdict = qdict_new(); | |
347 | count++; | |
2ac20613 | 348 | } |
37701411 PB |
349 | if (qdict != prev) { |
350 | if (prev) { | |
351 | cb(prev_group, prev, opaque, &local_err); | |
352 | qobject_unref(prev); | |
353 | if (local_err) { | |
354 | error_propagate(errp, local_err); | |
355 | goto out; | |
356 | } | |
357 | } | |
358 | strcpy(prev_group, group); | |
359 | continue; | |
2ac20613 | 360 | } |
42262ba8 | 361 | } |
37701411 | 362 | loc_set_file(fname, lno); |
d9f7e29e EH |
363 | value[0] = '\0'; |
364 | if (sscanf(line, " %63s = \"%1023[^\"]\"", arg, value) == 2 || | |
365 | sscanf(line, " %63s = \"\"", arg) == 1) { | |
42262ba8 | 366 | /* arg = value */ |
37701411 | 367 | if (qdict == NULL) { |
f7544edc | 368 | error_setg(errp, "no group defined"); |
cf5a65aa | 369 | goto out; |
42262ba8 | 370 | } |
37701411 | 371 | qdict_put_str(qdict, arg, value); |
42262ba8 GH |
372 | continue; |
373 | } | |
f7544edc | 374 | error_setg(errp, "parse error"); |
cf5a65aa | 375 | goto out; |
42262ba8 | 376 | } |
ef82516d | 377 | if (ferror(fp)) { |
f7544edc PB |
378 | loc_pop(&loc); |
379 | error_setg_errno(errp, errno, "Cannot read config file"); | |
461fea9b | 380 | goto out_no_loc; |
ef82516d | 381 | } |
e5766d6e | 382 | res = count; |
37701411 PB |
383 | if (qdict) { |
384 | cb(group, qdict, opaque, errp); | |
37701411 | 385 | } |
e72f9524 | 386 | out: |
cf5a65aa | 387 | loc_pop(&loc); |
461fea9b | 388 | out_no_loc: |
e72f9524 | 389 | qobject_unref(qdict); |
cf5a65aa | 390 | return res; |
42262ba8 | 391 | } |
dcfb0939 | 392 | |
37701411 PB |
393 | void qemu_config_do_parse(const char *group, QDict *qdict, void *opaque, Error **errp) |
394 | { | |
395 | QemuOptsList **lists = opaque; | |
37701411 | 396 | QemuOptsList *list; |
37701411 PB |
397 | |
398 | list = find_list(lists, group, errp); | |
399 | if (!list) { | |
400 | return; | |
401 | } | |
402 | ||
e7d85d95 | 403 | qemu_opts_from_qdict(list, qdict, errp); |
37701411 PB |
404 | } |
405 | ||
406 | int qemu_config_parse(FILE *fp, QemuOptsList **lists, const char *fname, Error **errp) | |
407 | { | |
408 | return qemu_config_foreach(fp, qemu_config_do_parse, lists, fname, errp); | |
409 | } | |
410 | ||
411 | int qemu_read_config_file(const char *filename, QEMUConfigCB *cb, Error **errp) | |
dcfb0939 KW |
412 | { |
413 | FILE *f = fopen(filename, "r"); | |
019e78ba KW |
414 | int ret; |
415 | ||
dcfb0939 | 416 | if (f == NULL) { |
f7544edc | 417 | error_setg_file_open(errp, errno, filename); |
dcfb0939 KW |
418 | return -errno; |
419 | } | |
420 | ||
37701411 | 421 | ret = qemu_config_foreach(f, cb, vm_config_groups, filename, errp); |
dcfb0939 | 422 | fclose(f); |
e5766d6e | 423 | return ret; |
dcfb0939 | 424 | } |
adf5c449 HR |
425 | |
426 | static void config_parse_qdict_section(QDict *options, QemuOptsList *opts, | |
427 | Error **errp) | |
428 | { | |
429 | QemuOpts *subopts; | |
430 | QDict *subqdict; | |
431 | QList *list = NULL; | |
adf5c449 HR |
432 | size_t orig_size, enum_size; |
433 | char *prefix; | |
434 | ||
435 | prefix = g_strdup_printf("%s.", opts->name); | |
436 | qdict_extract_subqdict(options, &subqdict, prefix); | |
437 | g_free(prefix); | |
438 | orig_size = qdict_size(subqdict); | |
439 | if (!orig_size) { | |
440 | goto out; | |
441 | } | |
442 | ||
c6ecec43 MA |
443 | subopts = qemu_opts_create(opts, NULL, 0, errp); |
444 | if (!subopts) { | |
adf5c449 HR |
445 | goto out; |
446 | } | |
447 | ||
668f62ec | 448 | if (!qemu_opts_absorb_qdict(subopts, subqdict, errp)) { |
adf5c449 HR |
449 | goto out; |
450 | } | |
451 | ||
452 | enum_size = qdict_size(subqdict); | |
453 | if (enum_size < orig_size && enum_size) { | |
454 | error_setg(errp, "Unknown option '%s' for [%s]", | |
455 | qdict_first(subqdict)->key, opts->name); | |
456 | goto out; | |
457 | } | |
458 | ||
459 | if (enum_size) { | |
460 | /* Multiple, enumerated sections */ | |
461 | QListEntry *list_entry; | |
462 | unsigned i = 0; | |
463 | ||
464 | /* Not required anymore */ | |
465 | qemu_opts_del(subopts); | |
466 | ||
467 | qdict_array_split(subqdict, &list); | |
468 | if (qdict_size(subqdict)) { | |
469 | error_setg(errp, "Unused option '%s' for [%s]", | |
470 | qdict_first(subqdict)->key, opts->name); | |
471 | goto out; | |
472 | } | |
473 | ||
474 | QLIST_FOREACH_ENTRY(list, list_entry) { | |
7dc847eb | 475 | QDict *section = qobject_to(QDict, qlist_entry_obj(list_entry)); |
adf5c449 HR |
476 | char *opt_name; |
477 | ||
ae39c4b2 HR |
478 | if (!section) { |
479 | error_setg(errp, "[%s] section (index %u) does not consist of " | |
480 | "keys", opts->name, i); | |
481 | goto out; | |
482 | } | |
483 | ||
adf5c449 | 484 | opt_name = g_strdup_printf("%s.%u", opts->name, i++); |
c6ecec43 | 485 | subopts = qemu_opts_create(opts, opt_name, 1, errp); |
adf5c449 | 486 | g_free(opt_name); |
c6ecec43 | 487 | if (!subopts) { |
adf5c449 HR |
488 | goto out; |
489 | } | |
490 | ||
668f62ec | 491 | if (!qemu_opts_absorb_qdict(subopts, section, errp)) { |
adf5c449 HR |
492 | qemu_opts_del(subopts); |
493 | goto out; | |
494 | } | |
495 | ||
496 | if (qdict_size(section)) { | |
497 | error_setg(errp, "[%s] section doesn't support the option '%s'", | |
498 | opts->name, qdict_first(section)->key); | |
499 | qemu_opts_del(subopts); | |
500 | goto out; | |
501 | } | |
502 | } | |
503 | } | |
504 | ||
505 | out: | |
cb3e7f08 MAL |
506 | qobject_unref(subqdict); |
507 | qobject_unref(list); | |
adf5c449 HR |
508 | } |
509 | ||
510 | void qemu_config_parse_qdict(QDict *options, QemuOptsList **lists, | |
511 | Error **errp) | |
512 | { | |
513 | int i; | |
514 | Error *local_err = NULL; | |
515 | ||
516 | for (i = 0; lists[i]; i++) { | |
517 | config_parse_qdict_section(options, lists[i], &local_err); | |
84d18f06 | 518 | if (local_err) { |
adf5c449 HR |
519 | error_propagate(errp, local_err); |
520 | return; | |
521 | } | |
522 | } | |
523 | } |