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Commit | Line | Data |
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d3f24367 KW |
1 | /* |
2 | * Commandline option parsing functions | |
3 | * | |
4 | * Copyright (c) 2003-2008 Fabrice Bellard | |
5 | * Copyright (c) 2009 Kevin Wolf <kwolf@redhat.com> | |
6 | * | |
7 | * Permission is hereby granted, free of charge, to any person obtaining a copy | |
8 | * of this software and associated documentation files (the "Software"), to deal | |
9 | * in the Software without restriction, including without limitation the rights | |
10 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
11 | * copies of the Software, and to permit persons to whom the Software is | |
12 | * furnished to do so, subject to the following conditions: | |
13 | * | |
14 | * The above copyright notice and this permission notice shall be included in | |
15 | * all copies or substantial portions of the Software. | |
16 | * | |
17 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
18 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
19 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
20 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
21 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
22 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | |
23 | * THE SOFTWARE. | |
24 | */ | |
25 | ||
26 | #include <stdio.h> | |
27 | #include <string.h> | |
28 | ||
29 | #include "qemu-common.h" | |
1de7afc9 | 30 | #include "qemu/error-report.h" |
7b1b5d19 PB |
31 | #include "qapi/qmp/types.h" |
32 | #include "qapi/error.h" | |
33 | #include "qapi/qmp/qerror.h" | |
1de7afc9 | 34 | #include "qemu/option_int.h" |
d3f24367 KW |
35 | |
36 | /* | |
37 | * Extracts the name of an option from the parameter string (p points at the | |
38 | * first byte of the option name) | |
39 | * | |
40 | * The option name is delimited by delim (usually , or =) or the string end | |
41 | * and is copied into buf. If the option name is longer than buf_size, it is | |
42 | * truncated. buf is always zero terminated. | |
43 | * | |
44 | * The return value is the position of the delimiter/zero byte after the option | |
45 | * name in p. | |
46 | */ | |
47 | const char *get_opt_name(char *buf, int buf_size, const char *p, char delim) | |
48 | { | |
49 | char *q; | |
50 | ||
51 | q = buf; | |
52 | while (*p != '\0' && *p != delim) { | |
53 | if (q && (q - buf) < buf_size - 1) | |
54 | *q++ = *p; | |
55 | p++; | |
56 | } | |
57 | if (q) | |
58 | *q = '\0'; | |
59 | ||
60 | return p; | |
61 | } | |
62 | ||
63 | /* | |
64 | * Extracts the value of an option from the parameter string p (p points at the | |
65 | * first byte of the option value) | |
66 | * | |
67 | * This function is comparable to get_opt_name with the difference that the | |
68 | * delimiter is fixed to be comma which starts a new option. To specify an | |
69 | * option value that contains commas, double each comma. | |
70 | */ | |
71 | const char *get_opt_value(char *buf, int buf_size, const char *p) | |
72 | { | |
73 | char *q; | |
74 | ||
75 | q = buf; | |
76 | while (*p != '\0') { | |
77 | if (*p == ',') { | |
78 | if (*(p + 1) != ',') | |
79 | break; | |
80 | p++; | |
81 | } | |
82 | if (q && (q - buf) < buf_size - 1) | |
83 | *q++ = *p; | |
84 | p++; | |
85 | } | |
86 | if (q) | |
87 | *q = '\0'; | |
88 | ||
89 | return p; | |
90 | } | |
91 | ||
62c5802e GH |
92 | int get_next_param_value(char *buf, int buf_size, |
93 | const char *tag, const char **pstr) | |
94 | { | |
95 | const char *p; | |
96 | char option[128]; | |
97 | ||
98 | p = *pstr; | |
99 | for(;;) { | |
100 | p = get_opt_name(option, sizeof(option), p, '='); | |
101 | if (*p != '=') | |
102 | break; | |
103 | p++; | |
104 | if (!strcmp(tag, option)) { | |
105 | *pstr = get_opt_value(buf, buf_size, p); | |
106 | if (**pstr == ',') { | |
107 | (*pstr)++; | |
108 | } | |
109 | return strlen(buf); | |
110 | } else { | |
111 | p = get_opt_value(NULL, 0, p); | |
112 | } | |
113 | if (*p != ',') | |
114 | break; | |
115 | p++; | |
116 | } | |
117 | return 0; | |
118 | } | |
119 | ||
120 | int get_param_value(char *buf, int buf_size, | |
121 | const char *tag, const char *str) | |
122 | { | |
123 | return get_next_param_value(buf, buf_size, tag, &str); | |
124 | } | |
125 | ||
d3f24367 KW |
126 | /* |
127 | * Searches an option list for an option with the given name | |
128 | */ | |
129 | QEMUOptionParameter *get_option_parameter(QEMUOptionParameter *list, | |
130 | const char *name) | |
131 | { | |
132 | while (list && list->name) { | |
133 | if (!strcmp(list->name, name)) { | |
134 | return list; | |
135 | } | |
136 | list++; | |
137 | } | |
138 | ||
139 | return NULL; | |
140 | } | |
141 | ||
cf62adfa LC |
142 | static void parse_option_bool(const char *name, const char *value, bool *ret, |
143 | Error **errp) | |
67b1355b GH |
144 | { |
145 | if (value != NULL) { | |
146 | if (!strcmp(value, "on")) { | |
147 | *ret = 1; | |
148 | } else if (!strcmp(value, "off")) { | |
149 | *ret = 0; | |
150 | } else { | |
cf62adfa | 151 | error_set(errp,QERR_INVALID_PARAMETER_VALUE, name, "'on' or 'off'"); |
67b1355b GH |
152 | } |
153 | } else { | |
154 | *ret = 1; | |
155 | } | |
67b1355b GH |
156 | } |
157 | ||
2f39df5b LC |
158 | static void parse_option_number(const char *name, const char *value, |
159 | uint64_t *ret, Error **errp) | |
e27c88fe GH |
160 | { |
161 | char *postfix; | |
162 | uint64_t number; | |
163 | ||
164 | if (value != NULL) { | |
165 | number = strtoull(value, &postfix, 0); | |
166 | if (*postfix != '\0') { | |
2f39df5b LC |
167 | error_set(errp, QERR_INVALID_PARAMETER_VALUE, name, "a number"); |
168 | return; | |
e27c88fe | 169 | } |
21c9f4cd | 170 | *ret = number; |
e27c88fe | 171 | } else { |
2f39df5b | 172 | error_set(errp, QERR_INVALID_PARAMETER_VALUE, name, "a number"); |
e27c88fe | 173 | } |
e27c88fe GH |
174 | } |
175 | ||
5e89db76 CL |
176 | static const QemuOptDesc *find_desc_by_name(const QemuOptDesc *desc, |
177 | const char *name) | |
178 | { | |
179 | int i; | |
180 | ||
181 | for (i = 0; desc[i].name != NULL; i++) { | |
182 | if (strcmp(desc[i].name, name) == 0) { | |
183 | return &desc[i]; | |
184 | } | |
185 | } | |
186 | ||
187 | return NULL; | |
188 | } | |
189 | ||
e8cd45c7 VL |
190 | void parse_option_size(const char *name, const char *value, |
191 | uint64_t *ret, Error **errp) | |
7695019b GH |
192 | { |
193 | char *postfix; | |
194 | double sizef; | |
195 | ||
196 | if (value != NULL) { | |
197 | sizef = strtod(value, &postfix); | |
198 | switch (*postfix) { | |
199 | case 'T': | |
200 | sizef *= 1024; | |
0b0404bf | 201 | /* fall through */ |
7695019b GH |
202 | case 'G': |
203 | sizef *= 1024; | |
0b0404bf | 204 | /* fall through */ |
7695019b GH |
205 | case 'M': |
206 | sizef *= 1024; | |
0b0404bf | 207 | /* fall through */ |
7695019b GH |
208 | case 'K': |
209 | case 'k': | |
210 | sizef *= 1024; | |
0b0404bf | 211 | /* fall through */ |
7695019b GH |
212 | case 'b': |
213 | case '\0': | |
214 | *ret = (uint64_t) sizef; | |
215 | break; | |
216 | default: | |
ec7b2ccb | 217 | error_set(errp, QERR_INVALID_PARAMETER_VALUE, name, "a size"); |
7216ae3d | 218 | #if 0 /* conversion from qerror_report() to error_set() broke this: */ |
c64f27d4 | 219 | error_printf_unless_qmp("You may use k, M, G or T suffixes for " |
7695019b | 220 | "kilobytes, megabytes, gigabytes and terabytes.\n"); |
7216ae3d | 221 | #endif |
ec7b2ccb | 222 | return; |
7695019b GH |
223 | } |
224 | } else { | |
ec7b2ccb | 225 | error_set(errp, QERR_INVALID_PARAMETER_VALUE, name, "a size"); |
7695019b | 226 | } |
7695019b GH |
227 | } |
228 | ||
d3f24367 KW |
229 | /* |
230 | * Sets the value of a parameter in a given option list. The parsing of the | |
231 | * value depends on the type of option: | |
232 | * | |
233 | * OPT_FLAG (uses value.n): | |
234 | * If no value is given, the flag is set to 1. | |
235 | * Otherwise the value must be "on" (set to 1) or "off" (set to 0) | |
236 | * | |
237 | * OPT_STRING (uses value.s): | |
238 | * value is strdup()ed and assigned as option value | |
239 | * | |
240 | * OPT_SIZE (uses value.n): | |
241 | * The value is converted to an integer. Suffixes for kilobytes etc. are | |
242 | * allowed (powers of 1024). | |
243 | * | |
244 | * Returns 0 on succes, -1 in error cases | |
245 | */ | |
246 | int set_option_parameter(QEMUOptionParameter *list, const char *name, | |
247 | const char *value) | |
248 | { | |
f02b77c9 | 249 | bool flag; |
cf62adfa | 250 | Error *local_err = NULL; |
67b1355b | 251 | |
d3f24367 KW |
252 | // Find a matching parameter |
253 | list = get_option_parameter(list, name); | |
254 | if (list == NULL) { | |
255 | fprintf(stderr, "Unknown option '%s'\n", name); | |
256 | return -1; | |
257 | } | |
258 | ||
259 | // Process parameter | |
260 | switch (list->type) { | |
261 | case OPT_FLAG: | |
cf62adfa | 262 | parse_option_bool(name, value, &flag, &local_err); |
84d18f06 | 263 | if (!local_err) { |
cf62adfa LC |
264 | list->value.n = flag; |
265 | } | |
d3f24367 KW |
266 | break; |
267 | ||
268 | case OPT_STRING: | |
269 | if (value != NULL) { | |
7267c094 | 270 | list->value.s = g_strdup(value); |
d3f24367 KW |
271 | } else { |
272 | fprintf(stderr, "Option '%s' needs a parameter\n", name); | |
273 | return -1; | |
274 | } | |
275 | break; | |
276 | ||
277 | case OPT_SIZE: | |
ec7b2ccb | 278 | parse_option_size(name, value, &list->value.n, &local_err); |
d3f24367 | 279 | break; |
7695019b | 280 | |
d3f24367 KW |
281 | default: |
282 | fprintf(stderr, "Bug: Option '%s' has an unknown type\n", name); | |
283 | return -1; | |
284 | } | |
285 | ||
84d18f06 | 286 | if (local_err) { |
cf62adfa LC |
287 | qerror_report_err(local_err); |
288 | error_free(local_err); | |
289 | return -1; | |
290 | } | |
291 | ||
d4ca092a HR |
292 | list->assigned = true; |
293 | ||
d3f24367 KW |
294 | return 0; |
295 | } | |
296 | ||
297 | /* | |
298 | * Sets the given parameter to an integer instead of a string. | |
299 | * This function cannot be used to set string options. | |
300 | * | |
301 | * Returns 0 on success, -1 in error cases | |
302 | */ | |
303 | int set_option_parameter_int(QEMUOptionParameter *list, const char *name, | |
304 | uint64_t value) | |
305 | { | |
306 | // Find a matching parameter | |
307 | list = get_option_parameter(list, name); | |
308 | if (list == NULL) { | |
309 | fprintf(stderr, "Unknown option '%s'\n", name); | |
310 | return -1; | |
311 | } | |
312 | ||
313 | // Process parameter | |
314 | switch (list->type) { | |
315 | case OPT_FLAG: | |
316 | case OPT_NUMBER: | |
317 | case OPT_SIZE: | |
318 | list->value.n = value; | |
319 | break; | |
320 | ||
321 | default: | |
322 | return -1; | |
323 | } | |
324 | ||
d4ca092a HR |
325 | list->assigned = true; |
326 | ||
d3f24367 KW |
327 | return 0; |
328 | } | |
329 | ||
330 | /* | |
331 | * Frees a option list. If it contains strings, the strings are freed as well. | |
332 | */ | |
333 | void free_option_parameters(QEMUOptionParameter *list) | |
334 | { | |
335 | QEMUOptionParameter *cur = list; | |
336 | ||
337 | while (cur && cur->name) { | |
338 | if (cur->type == OPT_STRING) { | |
7267c094 | 339 | g_free(cur->value.s); |
d3f24367 KW |
340 | } |
341 | cur++; | |
342 | } | |
343 | ||
7267c094 | 344 | g_free(list); |
d3f24367 KW |
345 | } |
346 | ||
b50cbabc MK |
347 | /* |
348 | * Count valid options in list | |
349 | */ | |
350 | static size_t count_option_parameters(QEMUOptionParameter *list) | |
351 | { | |
352 | size_t num_options = 0; | |
353 | ||
354 | while (list && list->name) { | |
355 | num_options++; | |
356 | list++; | |
357 | } | |
358 | ||
359 | return num_options; | |
360 | } | |
361 | ||
362 | /* | |
363 | * Append an option list (list) to an option list (dest). | |
364 | * | |
365 | * If dest is NULL, a new copy of list is created. | |
366 | * | |
367 | * Returns a pointer to the first element of dest (or the newly allocated copy) | |
368 | */ | |
369 | QEMUOptionParameter *append_option_parameters(QEMUOptionParameter *dest, | |
370 | QEMUOptionParameter *list) | |
371 | { | |
372 | size_t num_options, num_dest_options; | |
373 | ||
374 | num_options = count_option_parameters(dest); | |
375 | num_dest_options = num_options; | |
376 | ||
377 | num_options += count_option_parameters(list); | |
378 | ||
7267c094 | 379 | dest = g_realloc(dest, (num_options + 1) * sizeof(QEMUOptionParameter)); |
bd69fe84 | 380 | dest[num_dest_options].name = NULL; |
b50cbabc MK |
381 | |
382 | while (list && list->name) { | |
383 | if (get_option_parameter(dest, list->name) == NULL) { | |
384 | dest[num_dest_options++] = *list; | |
385 | dest[num_dest_options].name = NULL; | |
386 | } | |
387 | list++; | |
388 | } | |
389 | ||
390 | return dest; | |
391 | } | |
392 | ||
d3f24367 KW |
393 | /* |
394 | * Parses a parameter string (param) into an option list (dest). | |
395 | * | |
0e72e753 SH |
396 | * list is the template option list. If dest is NULL, a new copy of list is |
397 | * created. If list is NULL, this function fails. | |
d3f24367 KW |
398 | * |
399 | * A parameter string consists of one or more parameters, separated by commas. | |
400 | * Each parameter consists of its name and possibly of a value. In the latter | |
401 | * case, the value is delimited by an = character. To specify a value which | |
402 | * contains commas, double each comma so it won't be recognized as the end of | |
403 | * the parameter. | |
404 | * | |
405 | * For more details of the parsing see above. | |
406 | * | |
407 | * Returns a pointer to the first element of dest (or the newly allocated copy) | |
408 | * or NULL in error cases | |
409 | */ | |
410 | QEMUOptionParameter *parse_option_parameters(const char *param, | |
411 | QEMUOptionParameter *list, QEMUOptionParameter *dest) | |
412 | { | |
d3f24367 KW |
413 | QEMUOptionParameter *allocated = NULL; |
414 | char name[256]; | |
415 | char value[256]; | |
416 | char *param_delim, *value_delim; | |
417 | char next_delim; | |
d4ca092a | 418 | int i; |
d3f24367 KW |
419 | |
420 | if (list == NULL) { | |
421 | return NULL; | |
422 | } | |
423 | ||
424 | if (dest == NULL) { | |
898c257b | 425 | dest = allocated = append_option_parameters(NULL, list); |
d3f24367 KW |
426 | } |
427 | ||
d4ca092a HR |
428 | for (i = 0; dest[i].name; i++) { |
429 | dest[i].assigned = false; | |
430 | } | |
431 | ||
d3f24367 KW |
432 | while (*param) { |
433 | ||
434 | // Find parameter name and value in the string | |
435 | param_delim = strchr(param, ','); | |
436 | value_delim = strchr(param, '='); | |
437 | ||
438 | if (value_delim && (value_delim < param_delim || !param_delim)) { | |
439 | next_delim = '='; | |
440 | } else { | |
441 | next_delim = ','; | |
442 | value_delim = NULL; | |
443 | } | |
444 | ||
445 | param = get_opt_name(name, sizeof(name), param, next_delim); | |
446 | if (value_delim) { | |
447 | param = get_opt_value(value, sizeof(value), param + 1); | |
448 | } | |
449 | if (*param != '\0') { | |
450 | param++; | |
451 | } | |
452 | ||
453 | // Set the parameter | |
454 | if (set_option_parameter(dest, name, value_delim ? value : NULL)) { | |
455 | goto fail; | |
456 | } | |
457 | } | |
458 | ||
459 | return dest; | |
460 | ||
461 | fail: | |
462 | // Only free the list if it was newly allocated | |
463 | free_option_parameters(allocated); | |
464 | return NULL; | |
465 | } | |
466 | ||
7cc07ab8 KW |
467 | bool has_help_option(const char *param) |
468 | { | |
469 | size_t buflen = strlen(param) + 1; | |
470 | char *buf = g_malloc0(buflen); | |
471 | const char *p = param; | |
472 | bool result = false; | |
473 | ||
474 | while (*p) { | |
475 | p = get_opt_value(buf, buflen, p); | |
476 | if (*p) { | |
477 | p++; | |
478 | } | |
479 | ||
480 | if (is_help_option(buf)) { | |
481 | result = true; | |
482 | goto out; | |
483 | } | |
484 | } | |
485 | ||
486 | out: | |
487 | free(buf); | |
488 | return result; | |
489 | } | |
490 | ||
491 | bool is_valid_option_list(const char *param) | |
492 | { | |
493 | size_t buflen = strlen(param) + 1; | |
494 | char *buf = g_malloc0(buflen); | |
495 | const char *p = param; | |
496 | bool result = true; | |
497 | ||
498 | while (*p) { | |
499 | p = get_opt_value(buf, buflen, p); | |
500 | if (*p && !*++p) { | |
501 | result = false; | |
502 | goto out; | |
503 | } | |
504 | ||
505 | if (!*buf || *buf == ',') { | |
506 | result = false; | |
507 | goto out; | |
508 | } | |
509 | } | |
510 | ||
511 | out: | |
512 | free(buf); | |
513 | return result; | |
514 | } | |
515 | ||
d3f24367 KW |
516 | /* |
517 | * Prints all options of a list that have a value to stdout | |
518 | */ | |
519 | void print_option_parameters(QEMUOptionParameter *list) | |
520 | { | |
521 | while (list && list->name) { | |
522 | switch (list->type) { | |
523 | case OPT_STRING: | |
524 | if (list->value.s != NULL) { | |
525 | printf("%s='%s' ", list->name, list->value.s); | |
526 | } | |
527 | break; | |
528 | case OPT_FLAG: | |
529 | printf("%s=%s ", list->name, list->value.n ? "on" : "off"); | |
530 | break; | |
531 | case OPT_SIZE: | |
532 | case OPT_NUMBER: | |
533 | printf("%s=%" PRId64 " ", list->name, list->value.n); | |
534 | break; | |
535 | default: | |
07f35073 | 536 | printf("%s=(unknown type) ", list->name); |
d3f24367 KW |
537 | break; |
538 | } | |
539 | list++; | |
540 | } | |
541 | } | |
db08adf5 KW |
542 | |
543 | /* | |
544 | * Prints an overview of all available options | |
545 | */ | |
546 | void print_option_help(QEMUOptionParameter *list) | |
547 | { | |
548 | printf("Supported options:\n"); | |
549 | while (list && list->name) { | |
550 | printf("%-16s %s\n", list->name, | |
551 | list->help ? list->help : "No description available"); | |
552 | list++; | |
553 | } | |
554 | } | |
e27c88fe | 555 | |
504189a9 CL |
556 | void qemu_opts_print_help(QemuOptsList *list) |
557 | { | |
558 | QemuOptDesc *desc; | |
559 | ||
560 | assert(list); | |
561 | desc = list->desc; | |
562 | printf("Supported options:\n"); | |
563 | while (desc && desc->name) { | |
564 | printf("%-16s %s\n", desc->name, | |
565 | desc->help ? desc->help : "No description available"); | |
566 | desc++; | |
567 | } | |
568 | } | |
e27c88fe GH |
569 | /* ------------------------------------------------------------------ */ |
570 | ||
e27c88fe GH |
571 | static QemuOpt *qemu_opt_find(QemuOpts *opts, const char *name) |
572 | { | |
573 | QemuOpt *opt; | |
574 | ||
dc9ca4ba | 575 | QTAILQ_FOREACH_REVERSE(opt, &opts->head, QemuOptHead, next) { |
e27c88fe GH |
576 | if (strcmp(opt->name, name) != 0) |
577 | continue; | |
578 | return opt; | |
579 | } | |
580 | return NULL; | |
581 | } | |
582 | ||
fc345512 CL |
583 | static void qemu_opt_del(QemuOpt *opt) |
584 | { | |
585 | QTAILQ_REMOVE(&opt->opts->head, opt, next); | |
586 | g_free(opt->name); | |
587 | g_free(opt->str); | |
588 | g_free(opt); | |
589 | } | |
590 | ||
782730b0 CL |
591 | /* qemu_opt_set allows many settings for the same option. |
592 | * This function deletes all settings for an option. | |
593 | */ | |
594 | static void qemu_opt_del_all(QemuOpts *opts, const char *name) | |
595 | { | |
596 | QemuOpt *opt, *next_opt; | |
597 | ||
598 | QTAILQ_FOREACH_SAFE(opt, &opts->head, next, next_opt) { | |
599 | if (!strcmp(opt->name, name)) { | |
600 | qemu_opt_del(opt); | |
601 | } | |
602 | } | |
603 | } | |
604 | ||
e27c88fe GH |
605 | const char *qemu_opt_get(QemuOpts *opts, const char *name) |
606 | { | |
607 | QemuOpt *opt = qemu_opt_find(opts, name); | |
09722032 CL |
608 | |
609 | if (!opt) { | |
610 | const QemuOptDesc *desc = find_desc_by_name(opts->list->desc, name); | |
611 | if (desc && desc->def_value_str) { | |
612 | return desc->def_value_str; | |
613 | } | |
614 | } | |
e27c88fe GH |
615 | return opt ? opt->str : NULL; |
616 | } | |
617 | ||
782730b0 CL |
618 | /* Get a known option (or its default) and remove it from the list |
619 | * all in one action. Return a malloced string of the option value. | |
620 | * Result must be freed by caller with g_free(). | |
621 | */ | |
622 | char *qemu_opt_get_del(QemuOpts *opts, const char *name) | |
623 | { | |
624 | QemuOpt *opt; | |
625 | const QemuOptDesc *desc; | |
626 | char *str = NULL; | |
627 | ||
628 | if (opts == NULL) { | |
629 | return NULL; | |
630 | } | |
631 | ||
632 | opt = qemu_opt_find(opts, name); | |
633 | if (!opt) { | |
634 | desc = find_desc_by_name(opts->list->desc, name); | |
635 | if (desc && desc->def_value_str) { | |
636 | str = g_strdup(desc->def_value_str); | |
637 | } | |
638 | return str; | |
639 | } | |
640 | str = opt->str; | |
641 | opt->str = NULL; | |
642 | qemu_opt_del_all(opts, name); | |
643 | return str; | |
644 | } | |
645 | ||
c8057f95 PM |
646 | bool qemu_opt_has_help_opt(QemuOpts *opts) |
647 | { | |
648 | QemuOpt *opt; | |
649 | ||
650 | QTAILQ_FOREACH_REVERSE(opt, &opts->head, QemuOptHead, next) { | |
651 | if (is_help_option(opt->name)) { | |
652 | return true; | |
653 | } | |
654 | } | |
655 | return false; | |
656 | } | |
657 | ||
782730b0 CL |
658 | static bool qemu_opt_get_bool_helper(QemuOpts *opts, const char *name, |
659 | bool defval, bool del) | |
e27c88fe GH |
660 | { |
661 | QemuOpt *opt = qemu_opt_find(opts, name); | |
782730b0 | 662 | bool ret = defval; |
e27c88fe | 663 | |
09722032 CL |
664 | if (opt == NULL) { |
665 | const QemuOptDesc *desc = find_desc_by_name(opts->list->desc, name); | |
666 | if (desc && desc->def_value_str) { | |
782730b0 | 667 | parse_option_bool(name, desc->def_value_str, &ret, &error_abort); |
09722032 | 668 | } |
782730b0 | 669 | return ret; |
09722032 | 670 | } |
e27c88fe | 671 | assert(opt->desc && opt->desc->type == QEMU_OPT_BOOL); |
782730b0 CL |
672 | ret = opt->value.boolean; |
673 | if (del) { | |
674 | qemu_opt_del_all(opts, name); | |
675 | } | |
676 | return ret; | |
e27c88fe GH |
677 | } |
678 | ||
782730b0 CL |
679 | bool qemu_opt_get_bool(QemuOpts *opts, const char *name, bool defval) |
680 | { | |
681 | return qemu_opt_get_bool_helper(opts, name, defval, false); | |
682 | } | |
683 | ||
684 | bool qemu_opt_get_bool_del(QemuOpts *opts, const char *name, bool defval) | |
685 | { | |
686 | return qemu_opt_get_bool_helper(opts, name, defval, true); | |
687 | } | |
688 | ||
689 | static uint64_t qemu_opt_get_number_helper(QemuOpts *opts, const char *name, | |
690 | uint64_t defval, bool del) | |
e27c88fe GH |
691 | { |
692 | QemuOpt *opt = qemu_opt_find(opts, name); | |
782730b0 | 693 | uint64_t ret = defval; |
e27c88fe | 694 | |
09722032 CL |
695 | if (opt == NULL) { |
696 | const QemuOptDesc *desc = find_desc_by_name(opts->list->desc, name); | |
697 | if (desc && desc->def_value_str) { | |
782730b0 | 698 | parse_option_number(name, desc->def_value_str, &ret, &error_abort); |
09722032 | 699 | } |
782730b0 | 700 | return ret; |
09722032 | 701 | } |
e27c88fe | 702 | assert(opt->desc && opt->desc->type == QEMU_OPT_NUMBER); |
782730b0 CL |
703 | ret = opt->value.uint; |
704 | if (del) { | |
705 | qemu_opt_del_all(opts, name); | |
706 | } | |
707 | return ret; | |
e27c88fe GH |
708 | } |
709 | ||
782730b0 CL |
710 | uint64_t qemu_opt_get_number(QemuOpts *opts, const char *name, uint64_t defval) |
711 | { | |
712 | return qemu_opt_get_number_helper(opts, name, defval, false); | |
713 | } | |
714 | ||
715 | uint64_t qemu_opt_get_number_del(QemuOpts *opts, const char *name, | |
716 | uint64_t defval) | |
717 | { | |
718 | return qemu_opt_get_number_helper(opts, name, defval, true); | |
719 | } | |
720 | ||
721 | static uint64_t qemu_opt_get_size_helper(QemuOpts *opts, const char *name, | |
722 | uint64_t defval, bool del) | |
e27c88fe GH |
723 | { |
724 | QemuOpt *opt = qemu_opt_find(opts, name); | |
782730b0 | 725 | uint64_t ret = defval; |
e27c88fe | 726 | |
09722032 CL |
727 | if (opt == NULL) { |
728 | const QemuOptDesc *desc = find_desc_by_name(opts->list->desc, name); | |
729 | if (desc && desc->def_value_str) { | |
782730b0 | 730 | parse_option_size(name, desc->def_value_str, &ret, &error_abort); |
09722032 | 731 | } |
782730b0 | 732 | return ret; |
09722032 | 733 | } |
e27c88fe | 734 | assert(opt->desc && opt->desc->type == QEMU_OPT_SIZE); |
782730b0 CL |
735 | ret = opt->value.uint; |
736 | if (del) { | |
737 | qemu_opt_del_all(opts, name); | |
738 | } | |
739 | return ret; | |
740 | } | |
741 | ||
742 | uint64_t qemu_opt_get_size(QemuOpts *opts, const char *name, uint64_t defval) | |
743 | { | |
744 | return qemu_opt_get_size_helper(opts, name, defval, false); | |
745 | } | |
746 | ||
747 | uint64_t qemu_opt_get_size_del(QemuOpts *opts, const char *name, | |
748 | uint64_t defval) | |
749 | { | |
750 | return qemu_opt_get_size_helper(opts, name, defval, true); | |
e27c88fe GH |
751 | } |
752 | ||
6c519404 | 753 | static void qemu_opt_parse(QemuOpt *opt, Error **errp) |
e27c88fe GH |
754 | { |
755 | if (opt->desc == NULL) | |
6c519404 | 756 | return; |
2f39df5b | 757 | |
e27c88fe GH |
758 | switch (opt->desc->type) { |
759 | case QEMU_OPT_STRING: | |
760 | /* nothing */ | |
6c519404 | 761 | return; |
e27c88fe | 762 | case QEMU_OPT_BOOL: |
6c519404 | 763 | parse_option_bool(opt->name, opt->str, &opt->value.boolean, errp); |
cf62adfa | 764 | break; |
e27c88fe | 765 | case QEMU_OPT_NUMBER: |
6c519404 | 766 | parse_option_number(opt->name, opt->str, &opt->value.uint, errp); |
2f39df5b | 767 | break; |
e27c88fe | 768 | case QEMU_OPT_SIZE: |
6c519404 | 769 | parse_option_size(opt->name, opt->str, &opt->value.uint, errp); |
ec7b2ccb | 770 | break; |
e27c88fe GH |
771 | default: |
772 | abort(); | |
773 | } | |
774 | } | |
775 | ||
c474ced8 DXW |
776 | static bool opts_accepts_any(const QemuOpts *opts) |
777 | { | |
778 | return opts->list->desc[0].name == NULL; | |
779 | } | |
780 | ||
0dd6c526 KW |
781 | int qemu_opt_unset(QemuOpts *opts, const char *name) |
782 | { | |
783 | QemuOpt *opt = qemu_opt_find(opts, name); | |
784 | ||
785 | assert(opts_accepts_any(opts)); | |
786 | ||
787 | if (opt == NULL) { | |
788 | return -1; | |
789 | } else { | |
790 | qemu_opt_del(opt); | |
791 | return 0; | |
792 | } | |
793 | } | |
794 | ||
c474ced8 DXW |
795 | static void opt_set(QemuOpts *opts, const char *name, const char *value, |
796 | bool prepend, Error **errp) | |
797 | { | |
798 | QemuOpt *opt; | |
799 | const QemuOptDesc *desc; | |
800 | Error *local_err = NULL; | |
801 | ||
802 | desc = find_desc_by_name(opts->list->desc, name); | |
803 | if (!desc && !opts_accepts_any(opts)) { | |
804 | error_set(errp, QERR_INVALID_PARAMETER, name); | |
805 | return; | |
e27c88fe | 806 | } |
dc9ca4ba | 807 | |
7267c094 AL |
808 | opt = g_malloc0(sizeof(*opt)); |
809 | opt->name = g_strdup(name); | |
dc9ca4ba | 810 | opt->opts = opts; |
4f6dd9af JK |
811 | if (prepend) { |
812 | QTAILQ_INSERT_HEAD(&opts->head, opt, next); | |
813 | } else { | |
814 | QTAILQ_INSERT_TAIL(&opts->head, opt, next); | |
815 | } | |
c474ced8 | 816 | opt->desc = desc; |
c64f50d1 | 817 | opt->str = g_strdup(value); |
6c519404 | 818 | qemu_opt_parse(opt, &local_err); |
84d18f06 | 819 | if (local_err) { |
584d4064 | 820 | error_propagate(errp, local_err); |
e27c88fe | 821 | qemu_opt_del(opt); |
e27c88fe | 822 | } |
e27c88fe GH |
823 | } |
824 | ||
4f6dd9af JK |
825 | int qemu_opt_set(QemuOpts *opts, const char *name, const char *value) |
826 | { | |
584d4064 LC |
827 | Error *local_err = NULL; |
828 | ||
829 | opt_set(opts, name, value, false, &local_err); | |
84d18f06 | 830 | if (local_err) { |
584d4064 LC |
831 | qerror_report_err(local_err); |
832 | error_free(local_err); | |
833 | return -1; | |
834 | } | |
835 | ||
836 | return 0; | |
4f6dd9af JK |
837 | } |
838 | ||
384f2139 LC |
839 | void qemu_opt_set_err(QemuOpts *opts, const char *name, const char *value, |
840 | Error **errp) | |
841 | { | |
842 | opt_set(opts, name, value, false, errp); | |
843 | } | |
844 | ||
f02b77c9 MK |
845 | int qemu_opt_set_bool(QemuOpts *opts, const char *name, bool val) |
846 | { | |
847 | QemuOpt *opt; | |
848 | const QemuOptDesc *desc = opts->list->desc; | |
f02b77c9 | 849 | |
ad718d01 DXW |
850 | opt = g_malloc0(sizeof(*opt)); |
851 | opt->desc = find_desc_by_name(desc, name); | |
852 | if (!opt->desc && !opts_accepts_any(opts)) { | |
853 | qerror_report(QERR_INVALID_PARAMETER, name); | |
854 | g_free(opt); | |
855 | return -1; | |
f02b77c9 MK |
856 | } |
857 | ||
f02b77c9 MK |
858 | opt->name = g_strdup(name); |
859 | opt->opts = opts; | |
f02b77c9 | 860 | opt->value.boolean = !!val; |
ad718d01 DXW |
861 | opt->str = g_strdup(val ? "on" : "off"); |
862 | QTAILQ_INSERT_TAIL(&opts->head, opt, next); | |
863 | ||
f02b77c9 MK |
864 | return 0; |
865 | } | |
866 | ||
b83c18e2 DXW |
867 | int qemu_opt_set_number(QemuOpts *opts, const char *name, int64_t val) |
868 | { | |
869 | QemuOpt *opt; | |
870 | const QemuOptDesc *desc = opts->list->desc; | |
871 | ||
872 | opt = g_malloc0(sizeof(*opt)); | |
873 | opt->desc = find_desc_by_name(desc, name); | |
874 | if (!opt->desc && !opts_accepts_any(opts)) { | |
875 | qerror_report(QERR_INVALID_PARAMETER, name); | |
876 | g_free(opt); | |
877 | return -1; | |
878 | } | |
879 | ||
880 | opt->name = g_strdup(name); | |
881 | opt->opts = opts; | |
882 | opt->value.uint = val; | |
883 | opt->str = g_strdup_printf("%" PRId64, val); | |
884 | QTAILQ_INSERT_TAIL(&opts->head, opt, next); | |
885 | ||
886 | return 0; | |
887 | } | |
888 | ||
48026075 GH |
889 | int qemu_opt_foreach(QemuOpts *opts, qemu_opt_loopfunc func, void *opaque, |
890 | int abort_on_failure) | |
891 | { | |
892 | QemuOpt *opt; | |
893 | int rc = 0; | |
894 | ||
72cf2d4f | 895 | QTAILQ_FOREACH(opt, &opts->head, next) { |
48026075 GH |
896 | rc = func(opt->name, opt->str, opaque); |
897 | if (abort_on_failure && rc != 0) | |
898 | break; | |
899 | } | |
900 | return rc; | |
901 | } | |
902 | ||
e27c88fe GH |
903 | QemuOpts *qemu_opts_find(QemuOptsList *list, const char *id) |
904 | { | |
905 | QemuOpts *opts; | |
906 | ||
72cf2d4f | 907 | QTAILQ_FOREACH(opts, &list->head, next) { |
96bc97eb MA |
908 | if (!opts->id && !id) { |
909 | return opts; | |
e27c88fe | 910 | } |
96bc97eb MA |
911 | if (opts->id && id && !strcmp(opts->id, id)) { |
912 | return opts; | |
e27c88fe | 913 | } |
e27c88fe GH |
914 | } |
915 | return NULL; | |
916 | } | |
917 | ||
b560a9ab MA |
918 | static int id_wellformed(const char *id) |
919 | { | |
920 | int i; | |
921 | ||
922 | if (!qemu_isalpha(id[0])) { | |
923 | return 0; | |
924 | } | |
925 | for (i = 1; id[i]; i++) { | |
926 | if (!qemu_isalnum(id[i]) && !strchr("-._", id[i])) { | |
927 | return 0; | |
928 | } | |
929 | } | |
930 | return 1; | |
931 | } | |
932 | ||
8be7e7e4 LC |
933 | QemuOpts *qemu_opts_create(QemuOptsList *list, const char *id, |
934 | int fail_if_exists, Error **errp) | |
e27c88fe GH |
935 | { |
936 | QemuOpts *opts = NULL; | |
937 | ||
938 | if (id) { | |
b560a9ab | 939 | if (!id_wellformed(id)) { |
8be7e7e4 | 940 | error_set(errp,QERR_INVALID_PARAMETER_VALUE, "id", "an identifier"); |
7216ae3d | 941 | #if 0 /* conversion from qerror_report() to error_set() broke this: */ |
b560a9ab | 942 | error_printf_unless_qmp("Identifiers consist of letters, digits, '-', '.', '_', starting with a letter.\n"); |
7216ae3d | 943 | #endif |
b560a9ab MA |
944 | return NULL; |
945 | } | |
e27c88fe GH |
946 | opts = qemu_opts_find(list, id); |
947 | if (opts != NULL) { | |
da93318a | 948 | if (fail_if_exists && !list->merge_lists) { |
f231b88d | 949 | error_setg(errp, "Duplicate ID '%s' for %s", id, list->name); |
e27c88fe GH |
950 | return NULL; |
951 | } else { | |
952 | return opts; | |
953 | } | |
954 | } | |
da93318a PM |
955 | } else if (list->merge_lists) { |
956 | opts = qemu_opts_find(list, NULL); | |
957 | if (opts) { | |
958 | return opts; | |
959 | } | |
e27c88fe | 960 | } |
7267c094 | 961 | opts = g_malloc0(sizeof(*opts)); |
c64f50d1 | 962 | opts->id = g_strdup(id); |
e27c88fe | 963 | opts->list = list; |
827b0813 | 964 | loc_save(&opts->loc); |
72cf2d4f BS |
965 | QTAILQ_INIT(&opts->head); |
966 | QTAILQ_INSERT_TAIL(&list->head, opts, next); | |
e27c88fe GH |
967 | return opts; |
968 | } | |
969 | ||
bb67ab02 MA |
970 | void qemu_opts_reset(QemuOptsList *list) |
971 | { | |
972 | QemuOpts *opts, *next_opts; | |
973 | ||
974 | QTAILQ_FOREACH_SAFE(opts, &list->head, next, next_opts) { | |
975 | qemu_opts_del(opts); | |
976 | } | |
977 | } | |
978 | ||
94ac7268 MA |
979 | void qemu_opts_loc_restore(QemuOpts *opts) |
980 | { | |
981 | loc_restore(&opts->loc); | |
982 | } | |
983 | ||
e27c88fe GH |
984 | int qemu_opts_set(QemuOptsList *list, const char *id, |
985 | const char *name, const char *value) | |
986 | { | |
987 | QemuOpts *opts; | |
8be7e7e4 | 988 | Error *local_err = NULL; |
e27c88fe | 989 | |
8be7e7e4 | 990 | opts = qemu_opts_create(list, id, 1, &local_err); |
84d18f06 | 991 | if (local_err) { |
8be7e7e4 LC |
992 | qerror_report_err(local_err); |
993 | error_free(local_err); | |
e27c88fe GH |
994 | return -1; |
995 | } | |
996 | return qemu_opt_set(opts, name, value); | |
997 | } | |
998 | ||
48026075 GH |
999 | const char *qemu_opts_id(QemuOpts *opts) |
1000 | { | |
1001 | return opts->id; | |
1002 | } | |
1003 | ||
326642bc KW |
1004 | /* The id string will be g_free()d by qemu_opts_del */ |
1005 | void qemu_opts_set_id(QemuOpts *opts, char *id) | |
1006 | { | |
1007 | opts->id = id; | |
1008 | } | |
1009 | ||
e27c88fe GH |
1010 | void qemu_opts_del(QemuOpts *opts) |
1011 | { | |
1012 | QemuOpt *opt; | |
1013 | ||
1014 | for (;;) { | |
72cf2d4f | 1015 | opt = QTAILQ_FIRST(&opts->head); |
e27c88fe GH |
1016 | if (opt == NULL) |
1017 | break; | |
1018 | qemu_opt_del(opt); | |
1019 | } | |
72cf2d4f | 1020 | QTAILQ_REMOVE(&opts->list->head, opts, next); |
7267c094 AL |
1021 | g_free(opts->id); |
1022 | g_free(opts); | |
e27c88fe GH |
1023 | } |
1024 | ||
e6790542 | 1025 | void qemu_opts_print(QemuOpts *opts) |
e27c88fe GH |
1026 | { |
1027 | QemuOpt *opt; | |
09722032 | 1028 | QemuOptDesc *desc = opts->list->desc; |
e27c88fe | 1029 | |
09722032 CL |
1030 | if (desc[0].name == NULL) { |
1031 | QTAILQ_FOREACH(opt, &opts->head, next) { | |
1032 | printf("%s=\"%s\" ", opt->name, opt->str); | |
1033 | } | |
1034 | return; | |
1035 | } | |
1036 | for (; desc && desc->name; desc++) { | |
1037 | const char *value; | |
1038 | QemuOpt *opt = qemu_opt_find(opts, desc->name); | |
1039 | ||
1040 | value = opt ? opt->str : desc->def_value_str; | |
1041 | if (!value) { | |
1042 | continue; | |
1043 | } | |
1044 | if (desc->type == QEMU_OPT_STRING) { | |
1045 | printf("%s='%s' ", desc->name, value); | |
1046 | } else if ((desc->type == QEMU_OPT_SIZE || | |
1047 | desc->type == QEMU_OPT_NUMBER) && opt) { | |
1048 | printf("%s=%" PRId64 " ", desc->name, opt->value.uint); | |
1049 | } else { | |
1050 | printf("%s=%s ", desc->name, value); | |
1051 | } | |
e27c88fe | 1052 | } |
e27c88fe GH |
1053 | } |
1054 | ||
4f6dd9af JK |
1055 | static int opts_do_parse(QemuOpts *opts, const char *params, |
1056 | const char *firstname, bool prepend) | |
e27c88fe | 1057 | { |
d318ff99 | 1058 | char option[128], value[1024]; |
e27c88fe | 1059 | const char *p,*pe,*pc; |
584d4064 | 1060 | Error *local_err = NULL; |
e27c88fe | 1061 | |
2cfa571f | 1062 | for (p = params; *p != '\0'; p++) { |
e27c88fe GH |
1063 | pe = strchr(p, '='); |
1064 | pc = strchr(p, ','); | |
1065 | if (!pe || (pc && pc < pe)) { | |
1066 | /* found "foo,more" */ | |
1067 | if (p == params && firstname) { | |
1068 | /* implicitly named first option */ | |
1069 | pstrcpy(option, sizeof(option), firstname); | |
1070 | p = get_opt_value(value, sizeof(value), p); | |
1071 | } else { | |
1072 | /* option without value, probably a flag */ | |
1073 | p = get_opt_name(option, sizeof(option), p, ','); | |
96729cbd | 1074 | if (strncmp(option, "no", 2) == 0) { |
e27c88fe GH |
1075 | memmove(option, option+2, strlen(option+2)+1); |
1076 | pstrcpy(value, sizeof(value), "off"); | |
1077 | } else { | |
1078 | pstrcpy(value, sizeof(value), "on"); | |
1079 | } | |
1080 | } | |
1081 | } else { | |
1082 | /* found "foo=bar,more" */ | |
1083 | p = get_opt_name(option, sizeof(option), p, '='); | |
1084 | if (*p != '=') { | |
1085 | break; | |
1086 | } | |
1087 | p++; | |
1088 | p = get_opt_value(value, sizeof(value), p); | |
1089 | } | |
1090 | if (strcmp(option, "id") != 0) { | |
1091 | /* store and parse */ | |
584d4064 | 1092 | opt_set(opts, option, value, prepend, &local_err); |
84d18f06 | 1093 | if (local_err) { |
584d4064 LC |
1094 | qerror_report_err(local_err); |
1095 | error_free(local_err); | |
96729cbd | 1096 | return -1; |
e27c88fe GH |
1097 | } |
1098 | } | |
1099 | if (*p != ',') { | |
1100 | break; | |
1101 | } | |
e27c88fe | 1102 | } |
96729cbd GH |
1103 | return 0; |
1104 | } | |
1105 | ||
4f6dd9af JK |
1106 | int qemu_opts_do_parse(QemuOpts *opts, const char *params, const char *firstname) |
1107 | { | |
1108 | return opts_do_parse(opts, params, firstname, false); | |
1109 | } | |
1110 | ||
1111 | static QemuOpts *opts_parse(QemuOptsList *list, const char *params, | |
1112 | int permit_abbrev, bool defaults) | |
96729cbd | 1113 | { |
8212c64f | 1114 | const char *firstname; |
d318ff99 | 1115 | char value[1024], *id = NULL; |
96729cbd GH |
1116 | const char *p; |
1117 | QemuOpts *opts; | |
8be7e7e4 | 1118 | Error *local_err = NULL; |
96729cbd | 1119 | |
8212c64f MA |
1120 | assert(!permit_abbrev || list->implied_opt_name); |
1121 | firstname = permit_abbrev ? list->implied_opt_name : NULL; | |
1122 | ||
96729cbd GH |
1123 | if (strncmp(params, "id=", 3) == 0) { |
1124 | get_opt_value(value, sizeof(value), params+3); | |
d510c5cf | 1125 | id = value; |
96729cbd GH |
1126 | } else if ((p = strstr(params, ",id=")) != NULL) { |
1127 | get_opt_value(value, sizeof(value), p+4); | |
d510c5cf | 1128 | id = value; |
96729cbd | 1129 | } |
cb77d192 MA |
1130 | |
1131 | /* | |
1132 | * This code doesn't work for defaults && !list->merge_lists: when | |
1133 | * params has no id=, and list has an element with !opts->id, it | |
1134 | * appends a new element instead of returning the existing opts. | |
1135 | * However, we got no use for this case. Guard against possible | |
1136 | * (if unlikely) future misuse: | |
1137 | */ | |
1138 | assert(!defaults || list->merge_lists); | |
6d4cd408 | 1139 | opts = qemu_opts_create(list, id, !defaults, &local_err); |
8be7e7e4 | 1140 | if (opts == NULL) { |
84d18f06 | 1141 | if (local_err) { |
8be7e7e4 LC |
1142 | qerror_report_err(local_err); |
1143 | error_free(local_err); | |
1144 | } | |
96729cbd | 1145 | return NULL; |
8be7e7e4 | 1146 | } |
96729cbd | 1147 | |
4f6dd9af | 1148 | if (opts_do_parse(opts, params, firstname, defaults) != 0) { |
96729cbd GH |
1149 | qemu_opts_del(opts); |
1150 | return NULL; | |
1151 | } | |
1152 | ||
e27c88fe GH |
1153 | return opts; |
1154 | } | |
1155 | ||
4f6dd9af JK |
1156 | QemuOpts *qemu_opts_parse(QemuOptsList *list, const char *params, |
1157 | int permit_abbrev) | |
1158 | { | |
1159 | return opts_parse(list, params, permit_abbrev, false); | |
1160 | } | |
1161 | ||
1162 | void qemu_opts_set_defaults(QemuOptsList *list, const char *params, | |
1163 | int permit_abbrev) | |
1164 | { | |
1165 | QemuOpts *opts; | |
1166 | ||
1167 | opts = opts_parse(list, params, permit_abbrev, true); | |
1168 | assert(opts); | |
1169 | } | |
1170 | ||
4e89978e LC |
1171 | typedef struct OptsFromQDictState { |
1172 | QemuOpts *opts; | |
1173 | Error **errp; | |
1174 | } OptsFromQDictState; | |
1175 | ||
01e7f188 MA |
1176 | static void qemu_opts_from_qdict_1(const char *key, QObject *obj, void *opaque) |
1177 | { | |
4e89978e | 1178 | OptsFromQDictState *state = opaque; |
01e7f188 MA |
1179 | char buf[32]; |
1180 | const char *value; | |
1181 | int n; | |
1182 | ||
2767ceec | 1183 | if (!strcmp(key, "id") || *state->errp) { |
01e7f188 MA |
1184 | return; |
1185 | } | |
1186 | ||
1187 | switch (qobject_type(obj)) { | |
1188 | case QTYPE_QSTRING: | |
1189 | value = qstring_get_str(qobject_to_qstring(obj)); | |
1190 | break; | |
1191 | case QTYPE_QINT: | |
1192 | n = snprintf(buf, sizeof(buf), "%" PRId64, | |
1193 | qint_get_int(qobject_to_qint(obj))); | |
1194 | assert(n < sizeof(buf)); | |
1195 | value = buf; | |
1196 | break; | |
1197 | case QTYPE_QFLOAT: | |
1198 | n = snprintf(buf, sizeof(buf), "%.17g", | |
1199 | qfloat_get_double(qobject_to_qfloat(obj))); | |
1200 | assert(n < sizeof(buf)); | |
1201 | value = buf; | |
1202 | break; | |
1203 | case QTYPE_QBOOL: | |
d35215f8 BS |
1204 | pstrcpy(buf, sizeof(buf), |
1205 | qbool_get_int(qobject_to_qbool(obj)) ? "on" : "off"); | |
01e7f188 MA |
1206 | value = buf; |
1207 | break; | |
1208 | default: | |
1209 | return; | |
1210 | } | |
4e89978e LC |
1211 | |
1212 | qemu_opt_set_err(state->opts, key, value, state->errp); | |
01e7f188 MA |
1213 | } |
1214 | ||
1215 | /* | |
1216 | * Create QemuOpts from a QDict. | |
1217 | * Use value of key "id" as ID if it exists and is a QString. | |
1218 | * Only QStrings, QInts, QFloats and QBools are copied. Entries with | |
1219 | * other types are silently ignored. | |
1220 | */ | |
4e89978e LC |
1221 | QemuOpts *qemu_opts_from_qdict(QemuOptsList *list, const QDict *qdict, |
1222 | Error **errp) | |
01e7f188 | 1223 | { |
4e89978e | 1224 | OptsFromQDictState state; |
8be7e7e4 | 1225 | Error *local_err = NULL; |
4e89978e | 1226 | QemuOpts *opts; |
01e7f188 | 1227 | |
8be7e7e4 LC |
1228 | opts = qemu_opts_create(list, qdict_get_try_str(qdict, "id"), 1, |
1229 | &local_err); | |
84d18f06 | 1230 | if (local_err) { |
4e89978e | 1231 | error_propagate(errp, local_err); |
01e7f188 | 1232 | return NULL; |
8be7e7e4 | 1233 | } |
01e7f188 | 1234 | |
8be7e7e4 | 1235 | assert(opts != NULL); |
4e89978e LC |
1236 | |
1237 | state.errp = &local_err; | |
1238 | state.opts = opts; | |
1239 | qdict_iter(qdict, qemu_opts_from_qdict_1, &state); | |
84d18f06 | 1240 | if (local_err) { |
4e89978e LC |
1241 | error_propagate(errp, local_err); |
1242 | qemu_opts_del(opts); | |
1243 | return NULL; | |
1244 | } | |
1245 | ||
01e7f188 MA |
1246 | return opts; |
1247 | } | |
1248 | ||
376609cc KW |
1249 | /* |
1250 | * Adds all QDict entries to the QemuOpts that can be added and removes them | |
1251 | * from the QDict. When this function returns, the QDict contains only those | |
1252 | * entries that couldn't be added to the QemuOpts. | |
1253 | */ | |
1254 | void qemu_opts_absorb_qdict(QemuOpts *opts, QDict *qdict, Error **errp) | |
1255 | { | |
1256 | const QDictEntry *entry, *next; | |
1257 | ||
1258 | entry = qdict_first(qdict); | |
1259 | ||
1260 | while (entry != NULL) { | |
1261 | Error *local_err = NULL; | |
1262 | OptsFromQDictState state = { | |
1263 | .errp = &local_err, | |
1264 | .opts = opts, | |
1265 | }; | |
1266 | ||
1267 | next = qdict_next(qdict, entry); | |
1268 | ||
1269 | if (find_desc_by_name(opts->list->desc, entry->key)) { | |
1270 | qemu_opts_from_qdict_1(entry->key, entry->value, &state); | |
84d18f06 | 1271 | if (local_err) { |
376609cc KW |
1272 | error_propagate(errp, local_err); |
1273 | return; | |
1274 | } else { | |
1275 | qdict_del(qdict, entry->key); | |
1276 | } | |
1277 | } | |
1278 | ||
1279 | entry = next; | |
1280 | } | |
1281 | } | |
1282 | ||
01e7f188 MA |
1283 | /* |
1284 | * Convert from QemuOpts to QDict. | |
1285 | * The QDict values are of type QString. | |
1286 | * TODO We'll want to use types appropriate for opt->desc->type, but | |
1287 | * this is enough for now. | |
1288 | */ | |
1289 | QDict *qemu_opts_to_qdict(QemuOpts *opts, QDict *qdict) | |
1290 | { | |
1291 | QemuOpt *opt; | |
1292 | QObject *val; | |
1293 | ||
1294 | if (!qdict) { | |
1295 | qdict = qdict_new(); | |
1296 | } | |
1297 | if (opts->id) { | |
1298 | qdict_put(qdict, "id", qstring_from_str(opts->id)); | |
1299 | } | |
1300 | QTAILQ_FOREACH(opt, &opts->head, next) { | |
1301 | val = QOBJECT(qstring_from_str(opt->str)); | |
1302 | qdict_put_obj(qdict, opt->name, val); | |
1303 | } | |
1304 | return qdict; | |
1305 | } | |
1306 | ||
5dc519ef MM |
1307 | /* Validate parsed opts against descriptions where no |
1308 | * descriptions were provided in the QemuOptsList. | |
1309 | */ | |
29952866 | 1310 | void qemu_opts_validate(QemuOpts *opts, const QemuOptDesc *desc, Error **errp) |
5dc519ef MM |
1311 | { |
1312 | QemuOpt *opt; | |
6c519404 | 1313 | Error *local_err = NULL; |
5dc519ef | 1314 | |
db97ceba | 1315 | assert(opts_accepts_any(opts)); |
5dc519ef MM |
1316 | |
1317 | QTAILQ_FOREACH(opt, &opts->head, next) { | |
db97ceba DXW |
1318 | opt->desc = find_desc_by_name(desc, opt->name); |
1319 | if (!opt->desc) { | |
29952866 LC |
1320 | error_set(errp, QERR_INVALID_PARAMETER, opt->name); |
1321 | return; | |
5dc519ef MM |
1322 | } |
1323 | ||
6c519404 | 1324 | qemu_opt_parse(opt, &local_err); |
84d18f06 | 1325 | if (local_err) { |
29952866 LC |
1326 | error_propagate(errp, local_err); |
1327 | return; | |
5dc519ef MM |
1328 | } |
1329 | } | |
5dc519ef MM |
1330 | } |
1331 | ||
e27c88fe GH |
1332 | int qemu_opts_foreach(QemuOptsList *list, qemu_opts_loopfunc func, void *opaque, |
1333 | int abort_on_failure) | |
1334 | { | |
827b0813 | 1335 | Location loc; |
e27c88fe GH |
1336 | QemuOpts *opts; |
1337 | int rc = 0; | |
1338 | ||
827b0813 | 1339 | loc_push_none(&loc); |
72cf2d4f | 1340 | QTAILQ_FOREACH(opts, &list->head, next) { |
827b0813 | 1341 | loc_restore(&opts->loc); |
4a2594dd | 1342 | rc |= func(opts, opaque); |
e27c88fe GH |
1343 | if (abort_on_failure && rc != 0) |
1344 | break; | |
1345 | } | |
827b0813 | 1346 | loc_pop(&loc); |
e27c88fe GH |
1347 | return rc; |
1348 | } | |
8559e45e CL |
1349 | |
1350 | static size_t count_opts_list(QemuOptsList *list) | |
1351 | { | |
1352 | QemuOptDesc *desc = NULL; | |
1353 | size_t num_opts = 0; | |
1354 | ||
1355 | if (!list) { | |
1356 | return 0; | |
1357 | } | |
1358 | ||
1359 | desc = list->desc; | |
1360 | while (desc && desc->name) { | |
1361 | num_opts++; | |
1362 | desc++; | |
1363 | } | |
1364 | ||
1365 | return num_opts; | |
1366 | } | |
1367 | ||
1368 | /* Convert QEMUOptionParameter to QemuOpts | |
1369 | * FIXME: this function will be removed after all drivers | |
1370 | * switch to QemuOpts | |
1371 | */ | |
1372 | QemuOptsList *params_to_opts(QEMUOptionParameter *list) | |
1373 | { | |
1374 | QemuOptsList *opts = NULL; | |
1375 | size_t num_opts, i = 0; | |
1376 | ||
1377 | if (!list) { | |
1378 | return NULL; | |
1379 | } | |
1380 | ||
1381 | num_opts = count_option_parameters(list); | |
1382 | opts = g_malloc0(sizeof(QemuOptsList) + | |
1383 | (num_opts + 1) * sizeof(QemuOptDesc)); | |
1384 | QTAILQ_INIT(&opts->head); | |
1385 | /* (const char *) members will point to malloced space and need to free */ | |
1386 | opts->allocated = true; | |
1387 | ||
1388 | while (list && list->name) { | |
1389 | opts->desc[i].name = g_strdup(list->name); | |
1390 | opts->desc[i].help = g_strdup(list->help); | |
1391 | switch (list->type) { | |
1392 | case OPT_FLAG: | |
1393 | opts->desc[i].type = QEMU_OPT_BOOL; | |
1394 | opts->desc[i].def_value_str = | |
1395 | g_strdup(list->value.n ? "on" : "off"); | |
1396 | break; | |
1397 | ||
1398 | case OPT_NUMBER: | |
1399 | opts->desc[i].type = QEMU_OPT_NUMBER; | |
1400 | if (list->value.n) { | |
1401 | opts->desc[i].def_value_str = | |
1402 | g_strdup_printf("%" PRIu64, list->value.n); | |
1403 | } | |
1404 | break; | |
1405 | ||
1406 | case OPT_SIZE: | |
1407 | opts->desc[i].type = QEMU_OPT_SIZE; | |
1408 | if (list->value.n) { | |
1409 | opts->desc[i].def_value_str = | |
1410 | g_strdup_printf("%" PRIu64, list->value.n); | |
1411 | } | |
1412 | break; | |
1413 | ||
1414 | case OPT_STRING: | |
1415 | opts->desc[i].type = QEMU_OPT_STRING; | |
1416 | opts->desc[i].def_value_str = g_strdup(list->value.s); | |
1417 | break; | |
1418 | } | |
1419 | ||
1420 | i++; | |
1421 | list++; | |
1422 | } | |
1423 | ||
1424 | return opts; | |
1425 | } | |
1426 | ||
1427 | /* convert QemuOpts to QEMUOptionParameter | |
1428 | * Note: result QEMUOptionParameter has shorter lifetime than | |
1429 | * input QemuOpts. | |
1430 | * FIXME: this function will be removed after all drivers | |
1431 | * switch to QemuOpts | |
1432 | */ | |
1433 | QEMUOptionParameter *opts_to_params(QemuOpts *opts) | |
1434 | { | |
1435 | QEMUOptionParameter *dest = NULL; | |
1436 | QemuOptDesc *desc; | |
1437 | size_t num_opts, i = 0; | |
1438 | const char *tmp; | |
1439 | ||
1440 | if (!opts || !opts->list || !opts->list->desc) { | |
1441 | return NULL; | |
1442 | } | |
1443 | assert(!opts_accepts_any(opts)); | |
1444 | ||
1445 | num_opts = count_opts_list(opts->list); | |
1446 | dest = g_malloc0((num_opts + 1) * sizeof(QEMUOptionParameter)); | |
1447 | ||
1448 | desc = opts->list->desc; | |
1449 | while (desc && desc->name) { | |
1450 | dest[i].name = desc->name; | |
1451 | dest[i].help = desc->help; | |
1452 | dest[i].assigned = qemu_opt_find(opts, desc->name) ? true : false; | |
1453 | switch (desc->type) { | |
1454 | case QEMU_OPT_STRING: | |
1455 | dest[i].type = OPT_STRING; | |
1456 | tmp = qemu_opt_get(opts, desc->name); | |
1457 | dest[i].value.s = g_strdup(tmp); | |
1458 | break; | |
1459 | ||
1460 | case QEMU_OPT_BOOL: | |
1461 | dest[i].type = OPT_FLAG; | |
1462 | dest[i].value.n = qemu_opt_get_bool(opts, desc->name, 0) ? 1 : 0; | |
1463 | break; | |
1464 | ||
1465 | case QEMU_OPT_NUMBER: | |
1466 | dest[i].type = OPT_NUMBER; | |
1467 | dest[i].value.n = qemu_opt_get_number(opts, desc->name, 0); | |
1468 | break; | |
1469 | ||
1470 | case QEMU_OPT_SIZE: | |
1471 | dest[i].type = OPT_SIZE; | |
1472 | dest[i].value.n = qemu_opt_get_size(opts, desc->name, 0); | |
1473 | break; | |
1474 | } | |
1475 | ||
1476 | i++; | |
1477 | desc++; | |
1478 | } | |
1479 | ||
1480 | return dest; | |
1481 | } | |
1482 | ||
1483 | void qemu_opts_free(QemuOptsList *list) | |
1484 | { | |
1485 | /* List members point to new malloced space and need to be freed. | |
1486 | * FIXME: | |
1487 | * Introduced for QEMUOptionParamter->QemuOpts conversion. | |
1488 | * Will remove after all drivers switch to QemuOpts. | |
1489 | */ | |
1490 | if (list && list->allocated) { | |
1491 | QemuOptDesc *desc = list->desc; | |
1492 | while (desc && desc->name) { | |
1493 | g_free((char *)desc->name); | |
1494 | g_free((char *)desc->help); | |
1495 | g_free((char *)desc->def_value_str); | |
1496 | desc++; | |
1497 | } | |
1498 | } | |
1499 | ||
1500 | g_free(list); | |
1501 | } |