]>
Commit | Line | Data |
---|---|---|
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" | |
827b0813 | 30 | #include "qemu-error.h" |
01e7f188 | 31 | #include "qemu-objects.h" |
d3f24367 | 32 | #include "qemu-option.h" |
975b63a4 | 33 | #include "qerror.h" |
d3f24367 KW |
34 | |
35 | /* | |
36 | * Extracts the name of an option from the parameter string (p points at the | |
37 | * first byte of the option name) | |
38 | * | |
39 | * The option name is delimited by delim (usually , or =) or the string end | |
40 | * and is copied into buf. If the option name is longer than buf_size, it is | |
41 | * truncated. buf is always zero terminated. | |
42 | * | |
43 | * The return value is the position of the delimiter/zero byte after the option | |
44 | * name in p. | |
45 | */ | |
46 | const char *get_opt_name(char *buf, int buf_size, const char *p, char delim) | |
47 | { | |
48 | char *q; | |
49 | ||
50 | q = buf; | |
51 | while (*p != '\0' && *p != delim) { | |
52 | if (q && (q - buf) < buf_size - 1) | |
53 | *q++ = *p; | |
54 | p++; | |
55 | } | |
56 | if (q) | |
57 | *q = '\0'; | |
58 | ||
59 | return p; | |
60 | } | |
61 | ||
62 | /* | |
63 | * Extracts the value of an option from the parameter string p (p points at the | |
64 | * first byte of the option value) | |
65 | * | |
66 | * This function is comparable to get_opt_name with the difference that the | |
67 | * delimiter is fixed to be comma which starts a new option. To specify an | |
68 | * option value that contains commas, double each comma. | |
69 | */ | |
70 | const char *get_opt_value(char *buf, int buf_size, const char *p) | |
71 | { | |
72 | char *q; | |
73 | ||
74 | q = buf; | |
75 | while (*p != '\0') { | |
76 | if (*p == ',') { | |
77 | if (*(p + 1) != ',') | |
78 | break; | |
79 | p++; | |
80 | } | |
81 | if (q && (q - buf) < buf_size - 1) | |
82 | *q++ = *p; | |
83 | p++; | |
84 | } | |
85 | if (q) | |
86 | *q = '\0'; | |
87 | ||
88 | return p; | |
89 | } | |
90 | ||
62c5802e GH |
91 | int get_next_param_value(char *buf, int buf_size, |
92 | const char *tag, const char **pstr) | |
93 | { | |
94 | const char *p; | |
95 | char option[128]; | |
96 | ||
97 | p = *pstr; | |
98 | for(;;) { | |
99 | p = get_opt_name(option, sizeof(option), p, '='); | |
100 | if (*p != '=') | |
101 | break; | |
102 | p++; | |
103 | if (!strcmp(tag, option)) { | |
104 | *pstr = get_opt_value(buf, buf_size, p); | |
105 | if (**pstr == ',') { | |
106 | (*pstr)++; | |
107 | } | |
108 | return strlen(buf); | |
109 | } else { | |
110 | p = get_opt_value(NULL, 0, p); | |
111 | } | |
112 | if (*p != ',') | |
113 | break; | |
114 | p++; | |
115 | } | |
116 | return 0; | |
117 | } | |
118 | ||
119 | int get_param_value(char *buf, int buf_size, | |
120 | const char *tag, const char *str) | |
121 | { | |
122 | return get_next_param_value(buf, buf_size, tag, &str); | |
123 | } | |
124 | ||
125 | int check_params(char *buf, int buf_size, | |
126 | const char * const *params, const char *str) | |
127 | { | |
128 | const char *p; | |
129 | int i; | |
130 | ||
131 | p = str; | |
132 | while (*p != '\0') { | |
133 | p = get_opt_name(buf, buf_size, p, '='); | |
134 | if (*p != '=') { | |
135 | return -1; | |
136 | } | |
137 | p++; | |
138 | for (i = 0; params[i] != NULL; i++) { | |
139 | if (!strcmp(params[i], buf)) { | |
140 | break; | |
141 | } | |
142 | } | |
143 | if (params[i] == NULL) { | |
144 | return -1; | |
145 | } | |
146 | p = get_opt_value(NULL, 0, p); | |
147 | if (*p != ',') { | |
148 | break; | |
149 | } | |
150 | p++; | |
151 | } | |
152 | return 0; | |
153 | } | |
154 | ||
d3f24367 KW |
155 | /* |
156 | * Searches an option list for an option with the given name | |
157 | */ | |
158 | QEMUOptionParameter *get_option_parameter(QEMUOptionParameter *list, | |
159 | const char *name) | |
160 | { | |
161 | while (list && list->name) { | |
162 | if (!strcmp(list->name, name)) { | |
163 | return list; | |
164 | } | |
165 | list++; | |
166 | } | |
167 | ||
168 | return NULL; | |
169 | } | |
170 | ||
67b1355b GH |
171 | static int parse_option_bool(const char *name, const char *value, int *ret) |
172 | { | |
173 | if (value != NULL) { | |
174 | if (!strcmp(value, "on")) { | |
175 | *ret = 1; | |
176 | } else if (!strcmp(value, "off")) { | |
177 | *ret = 0; | |
178 | } else { | |
c64f27d4 | 179 | qerror_report(QERR_INVALID_PARAMETER_VALUE, name, "'on' or 'off'"); |
67b1355b GH |
180 | return -1; |
181 | } | |
182 | } else { | |
183 | *ret = 1; | |
184 | } | |
185 | return 0; | |
186 | } | |
187 | ||
e27c88fe GH |
188 | static int parse_option_number(const char *name, const char *value, uint64_t *ret) |
189 | { | |
190 | char *postfix; | |
191 | uint64_t number; | |
192 | ||
193 | if (value != NULL) { | |
194 | number = strtoull(value, &postfix, 0); | |
195 | if (*postfix != '\0') { | |
c64f27d4 | 196 | qerror_report(QERR_INVALID_PARAMETER_VALUE, name, "a number"); |
e27c88fe GH |
197 | return -1; |
198 | } | |
21c9f4cd | 199 | *ret = number; |
e27c88fe | 200 | } else { |
c64f27d4 | 201 | qerror_report(QERR_INVALID_PARAMETER_VALUE, name, "a number"); |
e27c88fe GH |
202 | return -1; |
203 | } | |
204 | return 0; | |
205 | } | |
206 | ||
7695019b GH |
207 | static int parse_option_size(const char *name, const char *value, uint64_t *ret) |
208 | { | |
209 | char *postfix; | |
210 | double sizef; | |
211 | ||
212 | if (value != NULL) { | |
213 | sizef = strtod(value, &postfix); | |
214 | switch (*postfix) { | |
215 | case 'T': | |
216 | sizef *= 1024; | |
217 | case 'G': | |
218 | sizef *= 1024; | |
219 | case 'M': | |
220 | sizef *= 1024; | |
221 | case 'K': | |
222 | case 'k': | |
223 | sizef *= 1024; | |
224 | case 'b': | |
225 | case '\0': | |
226 | *ret = (uint64_t) sizef; | |
227 | break; | |
228 | default: | |
c64f27d4 MA |
229 | qerror_report(QERR_INVALID_PARAMETER_VALUE, name, "a size"); |
230 | error_printf_unless_qmp("You may use k, M, G or T suffixes for " | |
7695019b GH |
231 | "kilobytes, megabytes, gigabytes and terabytes.\n"); |
232 | return -1; | |
233 | } | |
234 | } else { | |
c64f27d4 | 235 | qerror_report(QERR_INVALID_PARAMETER_VALUE, name, "a size"); |
7695019b GH |
236 | return -1; |
237 | } | |
238 | return 0; | |
239 | } | |
240 | ||
d3f24367 KW |
241 | /* |
242 | * Sets the value of a parameter in a given option list. The parsing of the | |
243 | * value depends on the type of option: | |
244 | * | |
245 | * OPT_FLAG (uses value.n): | |
246 | * If no value is given, the flag is set to 1. | |
247 | * Otherwise the value must be "on" (set to 1) or "off" (set to 0) | |
248 | * | |
249 | * OPT_STRING (uses value.s): | |
250 | * value is strdup()ed and assigned as option value | |
251 | * | |
252 | * OPT_SIZE (uses value.n): | |
253 | * The value is converted to an integer. Suffixes for kilobytes etc. are | |
254 | * allowed (powers of 1024). | |
255 | * | |
256 | * Returns 0 on succes, -1 in error cases | |
257 | */ | |
258 | int set_option_parameter(QEMUOptionParameter *list, const char *name, | |
259 | const char *value) | |
260 | { | |
67b1355b GH |
261 | int flag; |
262 | ||
d3f24367 KW |
263 | // Find a matching parameter |
264 | list = get_option_parameter(list, name); | |
265 | if (list == NULL) { | |
266 | fprintf(stderr, "Unknown option '%s'\n", name); | |
267 | return -1; | |
268 | } | |
269 | ||
270 | // Process parameter | |
271 | switch (list->type) { | |
272 | case OPT_FLAG: | |
3df04ac3 | 273 | if (parse_option_bool(name, value, &flag) == -1) |
67b1355b GH |
274 | return -1; |
275 | list->value.n = flag; | |
d3f24367 KW |
276 | break; |
277 | ||
278 | case OPT_STRING: | |
279 | if (value != NULL) { | |
d4c3fddd | 280 | list->value.s = qemu_strdup(value); |
d3f24367 KW |
281 | } else { |
282 | fprintf(stderr, "Option '%s' needs a parameter\n", name); | |
283 | return -1; | |
284 | } | |
285 | break; | |
286 | ||
287 | case OPT_SIZE: | |
3df04ac3 | 288 | if (parse_option_size(name, value, &list->value.n) == -1) |
d3f24367 | 289 | return -1; |
d3f24367 | 290 | break; |
7695019b | 291 | |
d3f24367 KW |
292 | default: |
293 | fprintf(stderr, "Bug: Option '%s' has an unknown type\n", name); | |
294 | return -1; | |
295 | } | |
296 | ||
297 | return 0; | |
298 | } | |
299 | ||
300 | /* | |
301 | * Sets the given parameter to an integer instead of a string. | |
302 | * This function cannot be used to set string options. | |
303 | * | |
304 | * Returns 0 on success, -1 in error cases | |
305 | */ | |
306 | int set_option_parameter_int(QEMUOptionParameter *list, const char *name, | |
307 | uint64_t value) | |
308 | { | |
309 | // Find a matching parameter | |
310 | list = get_option_parameter(list, name); | |
311 | if (list == NULL) { | |
312 | fprintf(stderr, "Unknown option '%s'\n", name); | |
313 | return -1; | |
314 | } | |
315 | ||
316 | // Process parameter | |
317 | switch (list->type) { | |
318 | case OPT_FLAG: | |
319 | case OPT_NUMBER: | |
320 | case OPT_SIZE: | |
321 | list->value.n = value; | |
322 | break; | |
323 | ||
324 | default: | |
325 | return -1; | |
326 | } | |
327 | ||
328 | return 0; | |
329 | } | |
330 | ||
331 | /* | |
332 | * Frees a option list. If it contains strings, the strings are freed as well. | |
333 | */ | |
334 | void free_option_parameters(QEMUOptionParameter *list) | |
335 | { | |
336 | QEMUOptionParameter *cur = list; | |
337 | ||
338 | while (cur && cur->name) { | |
339 | if (cur->type == OPT_STRING) { | |
d4c3fddd | 340 | qemu_free(cur->value.s); |
d3f24367 KW |
341 | } |
342 | cur++; | |
343 | } | |
344 | ||
d4c3fddd | 345 | qemu_free(list); |
d3f24367 KW |
346 | } |
347 | ||
b50cbabc MK |
348 | /* |
349 | * Count valid options in list | |
350 | */ | |
351 | static size_t count_option_parameters(QEMUOptionParameter *list) | |
352 | { | |
353 | size_t num_options = 0; | |
354 | ||
355 | while (list && list->name) { | |
356 | num_options++; | |
357 | list++; | |
358 | } | |
359 | ||
360 | return num_options; | |
361 | } | |
362 | ||
363 | /* | |
364 | * Append an option list (list) to an option list (dest). | |
365 | * | |
366 | * If dest is NULL, a new copy of list is created. | |
367 | * | |
368 | * Returns a pointer to the first element of dest (or the newly allocated copy) | |
369 | */ | |
370 | QEMUOptionParameter *append_option_parameters(QEMUOptionParameter *dest, | |
371 | QEMUOptionParameter *list) | |
372 | { | |
373 | size_t num_options, num_dest_options; | |
374 | ||
375 | num_options = count_option_parameters(dest); | |
376 | num_dest_options = num_options; | |
377 | ||
378 | num_options += count_option_parameters(list); | |
379 | ||
380 | dest = qemu_realloc(dest, (num_options + 1) * sizeof(QEMUOptionParameter)); | |
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 | * | |
396 | * list is the templace is. If dest is NULL, a new copy of list is created for | |
397 | * it. If list is NULL, this function fails. | |
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; | |
418 | size_t num_options; | |
419 | ||
420 | if (list == NULL) { | |
421 | return NULL; | |
422 | } | |
423 | ||
424 | if (dest == NULL) { | |
425 | // Count valid options | |
b50cbabc | 426 | num_options = count_option_parameters(list); |
d3f24367 KW |
427 | |
428 | // Create a copy of the option list to fill in values | |
429 | dest = qemu_mallocz((num_options + 1) * sizeof(QEMUOptionParameter)); | |
430 | allocated = dest; | |
431 | memcpy(dest, list, (num_options + 1) * sizeof(QEMUOptionParameter)); | |
432 | } | |
433 | ||
434 | while (*param) { | |
435 | ||
436 | // Find parameter name and value in the string | |
437 | param_delim = strchr(param, ','); | |
438 | value_delim = strchr(param, '='); | |
439 | ||
440 | if (value_delim && (value_delim < param_delim || !param_delim)) { | |
441 | next_delim = '='; | |
442 | } else { | |
443 | next_delim = ','; | |
444 | value_delim = NULL; | |
445 | } | |
446 | ||
447 | param = get_opt_name(name, sizeof(name), param, next_delim); | |
448 | if (value_delim) { | |
449 | param = get_opt_value(value, sizeof(value), param + 1); | |
450 | } | |
451 | if (*param != '\0') { | |
452 | param++; | |
453 | } | |
454 | ||
455 | // Set the parameter | |
456 | if (set_option_parameter(dest, name, value_delim ? value : NULL)) { | |
457 | goto fail; | |
458 | } | |
459 | } | |
460 | ||
461 | return dest; | |
462 | ||
463 | fail: | |
464 | // Only free the list if it was newly allocated | |
465 | free_option_parameters(allocated); | |
466 | return NULL; | |
467 | } | |
468 | ||
469 | /* | |
470 | * Prints all options of a list that have a value to stdout | |
471 | */ | |
472 | void print_option_parameters(QEMUOptionParameter *list) | |
473 | { | |
474 | while (list && list->name) { | |
475 | switch (list->type) { | |
476 | case OPT_STRING: | |
477 | if (list->value.s != NULL) { | |
478 | printf("%s='%s' ", list->name, list->value.s); | |
479 | } | |
480 | break; | |
481 | case OPT_FLAG: | |
482 | printf("%s=%s ", list->name, list->value.n ? "on" : "off"); | |
483 | break; | |
484 | case OPT_SIZE: | |
485 | case OPT_NUMBER: | |
486 | printf("%s=%" PRId64 " ", list->name, list->value.n); | |
487 | break; | |
488 | default: | |
489 | printf("%s=(unkown type) ", list->name); | |
490 | break; | |
491 | } | |
492 | list++; | |
493 | } | |
494 | } | |
db08adf5 KW |
495 | |
496 | /* | |
497 | * Prints an overview of all available options | |
498 | */ | |
499 | void print_option_help(QEMUOptionParameter *list) | |
500 | { | |
501 | printf("Supported options:\n"); | |
502 | while (list && list->name) { | |
503 | printf("%-16s %s\n", list->name, | |
504 | list->help ? list->help : "No description available"); | |
505 | list++; | |
506 | } | |
507 | } | |
e27c88fe GH |
508 | |
509 | /* ------------------------------------------------------------------ */ | |
510 | ||
511 | struct QemuOpt { | |
512 | const char *name; | |
513 | const char *str; | |
514 | ||
238431a9 | 515 | const QemuOptDesc *desc; |
e27c88fe | 516 | union { |
1f5c1775 | 517 | int boolean; |
e27c88fe GH |
518 | uint64_t uint; |
519 | } value; | |
520 | ||
521 | QemuOpts *opts; | |
72cf2d4f | 522 | QTAILQ_ENTRY(QemuOpt) next; |
e27c88fe GH |
523 | }; |
524 | ||
525 | struct QemuOpts { | |
b09417b9 | 526 | char *id; |
e27c88fe | 527 | QemuOptsList *list; |
827b0813 | 528 | Location loc; |
dc9ca4ba | 529 | QTAILQ_HEAD(QemuOptHead, QemuOpt) head; |
72cf2d4f | 530 | QTAILQ_ENTRY(QemuOpts) next; |
e27c88fe GH |
531 | }; |
532 | ||
533 | static QemuOpt *qemu_opt_find(QemuOpts *opts, const char *name) | |
534 | { | |
535 | QemuOpt *opt; | |
536 | ||
dc9ca4ba | 537 | QTAILQ_FOREACH_REVERSE(opt, &opts->head, QemuOptHead, next) { |
e27c88fe GH |
538 | if (strcmp(opt->name, name) != 0) |
539 | continue; | |
540 | return opt; | |
541 | } | |
542 | return NULL; | |
543 | } | |
544 | ||
545 | const char *qemu_opt_get(QemuOpts *opts, const char *name) | |
546 | { | |
547 | QemuOpt *opt = qemu_opt_find(opts, name); | |
548 | return opt ? opt->str : NULL; | |
549 | } | |
550 | ||
551 | int qemu_opt_get_bool(QemuOpts *opts, const char *name, int defval) | |
552 | { | |
553 | QemuOpt *opt = qemu_opt_find(opts, name); | |
554 | ||
555 | if (opt == NULL) | |
556 | return defval; | |
557 | assert(opt->desc && opt->desc->type == QEMU_OPT_BOOL); | |
1f5c1775 | 558 | return opt->value.boolean; |
e27c88fe GH |
559 | } |
560 | ||
561 | uint64_t qemu_opt_get_number(QemuOpts *opts, const char *name, uint64_t defval) | |
562 | { | |
563 | QemuOpt *opt = qemu_opt_find(opts, name); | |
564 | ||
565 | if (opt == NULL) | |
566 | return defval; | |
567 | assert(opt->desc && opt->desc->type == QEMU_OPT_NUMBER); | |
568 | return opt->value.uint; | |
569 | } | |
570 | ||
571 | uint64_t qemu_opt_get_size(QemuOpts *opts, const char *name, uint64_t defval) | |
572 | { | |
573 | QemuOpt *opt = qemu_opt_find(opts, name); | |
574 | ||
575 | if (opt == NULL) | |
576 | return defval; | |
577 | assert(opt->desc && opt->desc->type == QEMU_OPT_SIZE); | |
578 | return opt->value.uint; | |
579 | } | |
580 | ||
581 | static int qemu_opt_parse(QemuOpt *opt) | |
582 | { | |
583 | if (opt->desc == NULL) | |
584 | return 0; | |
585 | switch (opt->desc->type) { | |
586 | case QEMU_OPT_STRING: | |
587 | /* nothing */ | |
588 | return 0; | |
589 | case QEMU_OPT_BOOL: | |
1f5c1775 | 590 | return parse_option_bool(opt->name, opt->str, &opt->value.boolean); |
e27c88fe GH |
591 | case QEMU_OPT_NUMBER: |
592 | return parse_option_number(opt->name, opt->str, &opt->value.uint); | |
593 | case QEMU_OPT_SIZE: | |
594 | return parse_option_size(opt->name, opt->str, &opt->value.uint); | |
595 | default: | |
596 | abort(); | |
597 | } | |
598 | } | |
599 | ||
600 | static void qemu_opt_del(QemuOpt *opt) | |
601 | { | |
72cf2d4f | 602 | QTAILQ_REMOVE(&opt->opts->head, opt, next); |
e27c88fe GH |
603 | qemu_free((/* !const */ char*)opt->name); |
604 | qemu_free((/* !const */ char*)opt->str); | |
605 | qemu_free(opt); | |
606 | } | |
607 | ||
608 | int qemu_opt_set(QemuOpts *opts, const char *name, const char *value) | |
609 | { | |
610 | QemuOpt *opt; | |
238431a9 | 611 | const QemuOptDesc *desc = opts->list->desc; |
dc9ca4ba | 612 | int i; |
e27c88fe | 613 | |
dc9ca4ba MM |
614 | for (i = 0; desc[i].name != NULL; i++) { |
615 | if (strcmp(desc[i].name, name) == 0) { | |
616 | break; | |
e27c88fe | 617 | } |
dc9ca4ba MM |
618 | } |
619 | if (desc[i].name == NULL) { | |
620 | if (i == 0) { | |
621 | /* empty list -> allow any */; | |
622 | } else { | |
c64f27d4 | 623 | qerror_report(QERR_INVALID_PARAMETER, name); |
dc9ca4ba | 624 | return -1; |
e27c88fe GH |
625 | } |
626 | } | |
dc9ca4ba MM |
627 | |
628 | opt = qemu_mallocz(sizeof(*opt)); | |
629 | opt->name = qemu_strdup(name); | |
630 | opt->opts = opts; | |
631 | QTAILQ_INSERT_TAIL(&opts->head, opt, next); | |
632 | if (desc[i].name != NULL) { | |
633 | opt->desc = desc+i; | |
634 | } | |
e27c88fe GH |
635 | if (value) { |
636 | opt->str = qemu_strdup(value); | |
637 | } | |
638 | if (qemu_opt_parse(opt) < 0) { | |
e27c88fe GH |
639 | qemu_opt_del(opt); |
640 | return -1; | |
641 | } | |
642 | return 0; | |
643 | } | |
644 | ||
48026075 GH |
645 | int qemu_opt_foreach(QemuOpts *opts, qemu_opt_loopfunc func, void *opaque, |
646 | int abort_on_failure) | |
647 | { | |
648 | QemuOpt *opt; | |
649 | int rc = 0; | |
650 | ||
72cf2d4f | 651 | QTAILQ_FOREACH(opt, &opts->head, next) { |
48026075 GH |
652 | rc = func(opt->name, opt->str, opaque); |
653 | if (abort_on_failure && rc != 0) | |
654 | break; | |
655 | } | |
656 | return rc; | |
657 | } | |
658 | ||
e27c88fe GH |
659 | QemuOpts *qemu_opts_find(QemuOptsList *list, const char *id) |
660 | { | |
661 | QemuOpts *opts; | |
662 | ||
72cf2d4f | 663 | QTAILQ_FOREACH(opts, &list->head, next) { |
e27c88fe GH |
664 | if (!opts->id) { |
665 | continue; | |
666 | } | |
667 | if (strcmp(opts->id, id) != 0) { | |
668 | continue; | |
669 | } | |
670 | return opts; | |
671 | } | |
672 | return NULL; | |
673 | } | |
674 | ||
675 | QemuOpts *qemu_opts_create(QemuOptsList *list, const char *id, int fail_if_exists) | |
676 | { | |
677 | QemuOpts *opts = NULL; | |
678 | ||
679 | if (id) { | |
680 | opts = qemu_opts_find(list, id); | |
681 | if (opts != NULL) { | |
682 | if (fail_if_exists) { | |
975b63a4 | 683 | qerror_report(QERR_DUPLICATE_ID, id, list->name); |
e27c88fe GH |
684 | return NULL; |
685 | } else { | |
686 | return opts; | |
687 | } | |
688 | } | |
689 | } | |
690 | opts = qemu_mallocz(sizeof(*opts)); | |
691 | if (id) { | |
692 | opts->id = qemu_strdup(id); | |
693 | } | |
694 | opts->list = list; | |
827b0813 | 695 | loc_save(&opts->loc); |
72cf2d4f BS |
696 | QTAILQ_INIT(&opts->head); |
697 | QTAILQ_INSERT_TAIL(&list->head, opts, next); | |
e27c88fe GH |
698 | return opts; |
699 | } | |
700 | ||
701 | int qemu_opts_set(QemuOptsList *list, const char *id, | |
702 | const char *name, const char *value) | |
703 | { | |
704 | QemuOpts *opts; | |
705 | ||
706 | opts = qemu_opts_create(list, id, 1); | |
707 | if (opts == NULL) { | |
e27c88fe GH |
708 | return -1; |
709 | } | |
710 | return qemu_opt_set(opts, name, value); | |
711 | } | |
712 | ||
48026075 GH |
713 | const char *qemu_opts_id(QemuOpts *opts) |
714 | { | |
715 | return opts->id; | |
716 | } | |
717 | ||
e27c88fe GH |
718 | void qemu_opts_del(QemuOpts *opts) |
719 | { | |
720 | QemuOpt *opt; | |
721 | ||
722 | for (;;) { | |
72cf2d4f | 723 | opt = QTAILQ_FIRST(&opts->head); |
e27c88fe GH |
724 | if (opt == NULL) |
725 | break; | |
726 | qemu_opt_del(opt); | |
727 | } | |
72cf2d4f | 728 | QTAILQ_REMOVE(&opts->list->head, opts, next); |
b09417b9 | 729 | qemu_free(opts->id); |
e27c88fe GH |
730 | qemu_free(opts); |
731 | } | |
732 | ||
733 | int qemu_opts_print(QemuOpts *opts, void *dummy) | |
734 | { | |
735 | QemuOpt *opt; | |
736 | ||
737 | fprintf(stderr, "%s: %s:", opts->list->name, | |
738 | opts->id ? opts->id : "<noid>"); | |
72cf2d4f | 739 | QTAILQ_FOREACH(opt, &opts->head, next) { |
e27c88fe GH |
740 | fprintf(stderr, " %s=\"%s\"", opt->name, opt->str); |
741 | } | |
742 | fprintf(stderr, "\n"); | |
743 | return 0; | |
744 | } | |
745 | ||
96729cbd | 746 | int qemu_opts_do_parse(QemuOpts *opts, const char *params, const char *firstname) |
e27c88fe | 747 | { |
d318ff99 | 748 | char option[128], value[1024]; |
e27c88fe GH |
749 | const char *p,*pe,*pc; |
750 | ||
2cfa571f | 751 | for (p = params; *p != '\0'; p++) { |
e27c88fe GH |
752 | pe = strchr(p, '='); |
753 | pc = strchr(p, ','); | |
754 | if (!pe || (pc && pc < pe)) { | |
755 | /* found "foo,more" */ | |
756 | if (p == params && firstname) { | |
757 | /* implicitly named first option */ | |
758 | pstrcpy(option, sizeof(option), firstname); | |
759 | p = get_opt_value(value, sizeof(value), p); | |
760 | } else { | |
761 | /* option without value, probably a flag */ | |
762 | p = get_opt_name(option, sizeof(option), p, ','); | |
96729cbd | 763 | if (strncmp(option, "no", 2) == 0) { |
e27c88fe GH |
764 | memmove(option, option+2, strlen(option+2)+1); |
765 | pstrcpy(value, sizeof(value), "off"); | |
766 | } else { | |
767 | pstrcpy(value, sizeof(value), "on"); | |
768 | } | |
769 | } | |
770 | } else { | |
771 | /* found "foo=bar,more" */ | |
772 | p = get_opt_name(option, sizeof(option), p, '='); | |
773 | if (*p != '=') { | |
774 | break; | |
775 | } | |
776 | p++; | |
777 | p = get_opt_value(value, sizeof(value), p); | |
778 | } | |
779 | if (strcmp(option, "id") != 0) { | |
780 | /* store and parse */ | |
3df04ac3 | 781 | if (qemu_opt_set(opts, option, value) == -1) { |
96729cbd | 782 | return -1; |
e27c88fe GH |
783 | } |
784 | } | |
785 | if (*p != ',') { | |
786 | break; | |
787 | } | |
e27c88fe | 788 | } |
96729cbd GH |
789 | return 0; |
790 | } | |
791 | ||
8212c64f MA |
792 | QemuOpts *qemu_opts_parse(QemuOptsList *list, const char *params, |
793 | int permit_abbrev) | |
96729cbd | 794 | { |
8212c64f | 795 | const char *firstname; |
d318ff99 | 796 | char value[1024], *id = NULL; |
96729cbd GH |
797 | const char *p; |
798 | QemuOpts *opts; | |
799 | ||
8212c64f MA |
800 | assert(!permit_abbrev || list->implied_opt_name); |
801 | firstname = permit_abbrev ? list->implied_opt_name : NULL; | |
802 | ||
96729cbd GH |
803 | if (strncmp(params, "id=", 3) == 0) { |
804 | get_opt_value(value, sizeof(value), params+3); | |
d510c5cf | 805 | id = value; |
96729cbd GH |
806 | } else if ((p = strstr(params, ",id=")) != NULL) { |
807 | get_opt_value(value, sizeof(value), p+4); | |
d510c5cf | 808 | id = value; |
96729cbd GH |
809 | } |
810 | opts = qemu_opts_create(list, id, 1); | |
811 | if (opts == NULL) | |
812 | return NULL; | |
813 | ||
814 | if (qemu_opts_do_parse(opts, params, firstname) != 0) { | |
815 | qemu_opts_del(opts); | |
816 | return NULL; | |
817 | } | |
818 | ||
e27c88fe GH |
819 | return opts; |
820 | } | |
821 | ||
01e7f188 MA |
822 | static void qemu_opts_from_qdict_1(const char *key, QObject *obj, void *opaque) |
823 | { | |
824 | char buf[32]; | |
825 | const char *value; | |
826 | int n; | |
827 | ||
828 | if (!strcmp(key, "id")) { | |
829 | return; | |
830 | } | |
831 | ||
832 | switch (qobject_type(obj)) { | |
833 | case QTYPE_QSTRING: | |
834 | value = qstring_get_str(qobject_to_qstring(obj)); | |
835 | break; | |
836 | case QTYPE_QINT: | |
837 | n = snprintf(buf, sizeof(buf), "%" PRId64, | |
838 | qint_get_int(qobject_to_qint(obj))); | |
839 | assert(n < sizeof(buf)); | |
840 | value = buf; | |
841 | break; | |
842 | case QTYPE_QFLOAT: | |
843 | n = snprintf(buf, sizeof(buf), "%.17g", | |
844 | qfloat_get_double(qobject_to_qfloat(obj))); | |
845 | assert(n < sizeof(buf)); | |
846 | value = buf; | |
847 | break; | |
848 | case QTYPE_QBOOL: | |
d35215f8 BS |
849 | pstrcpy(buf, sizeof(buf), |
850 | qbool_get_int(qobject_to_qbool(obj)) ? "on" : "off"); | |
01e7f188 MA |
851 | value = buf; |
852 | break; | |
853 | default: | |
854 | return; | |
855 | } | |
856 | qemu_opt_set(opaque, key, value); | |
857 | } | |
858 | ||
859 | /* | |
860 | * Create QemuOpts from a QDict. | |
861 | * Use value of key "id" as ID if it exists and is a QString. | |
862 | * Only QStrings, QInts, QFloats and QBools are copied. Entries with | |
863 | * other types are silently ignored. | |
864 | */ | |
865 | QemuOpts *qemu_opts_from_qdict(QemuOptsList *list, const QDict *qdict) | |
866 | { | |
867 | QemuOpts *opts; | |
868 | ||
869 | opts = qemu_opts_create(list, qdict_get_try_str(qdict, "id"), 1); | |
870 | if (opts == NULL) | |
871 | return NULL; | |
872 | ||
873 | qdict_iter(qdict, qemu_opts_from_qdict_1, opts); | |
874 | return opts; | |
875 | } | |
876 | ||
877 | /* | |
878 | * Convert from QemuOpts to QDict. | |
879 | * The QDict values are of type QString. | |
880 | * TODO We'll want to use types appropriate for opt->desc->type, but | |
881 | * this is enough for now. | |
882 | */ | |
883 | QDict *qemu_opts_to_qdict(QemuOpts *opts, QDict *qdict) | |
884 | { | |
885 | QemuOpt *opt; | |
886 | QObject *val; | |
887 | ||
888 | if (!qdict) { | |
889 | qdict = qdict_new(); | |
890 | } | |
891 | if (opts->id) { | |
892 | qdict_put(qdict, "id", qstring_from_str(opts->id)); | |
893 | } | |
894 | QTAILQ_FOREACH(opt, &opts->head, next) { | |
895 | val = QOBJECT(qstring_from_str(opt->str)); | |
896 | qdict_put_obj(qdict, opt->name, val); | |
897 | } | |
898 | return qdict; | |
899 | } | |
900 | ||
5dc519ef MM |
901 | /* Validate parsed opts against descriptions where no |
902 | * descriptions were provided in the QemuOptsList. | |
903 | */ | |
238431a9 | 904 | int qemu_opts_validate(QemuOpts *opts, const QemuOptDesc *desc) |
5dc519ef MM |
905 | { |
906 | QemuOpt *opt; | |
907 | ||
908 | assert(opts->list->desc[0].name == NULL); | |
909 | ||
910 | QTAILQ_FOREACH(opt, &opts->head, next) { | |
911 | int i; | |
912 | ||
913 | for (i = 0; desc[i].name != NULL; i++) { | |
914 | if (strcmp(desc[i].name, opt->name) == 0) { | |
915 | break; | |
916 | } | |
917 | } | |
918 | if (desc[i].name == NULL) { | |
db716e9c | 919 | qerror_report(QERR_INVALID_PARAMETER, opt->name); |
5dc519ef MM |
920 | return -1; |
921 | } | |
922 | ||
923 | opt->desc = &desc[i]; | |
924 | ||
925 | if (qemu_opt_parse(opt) < 0) { | |
926 | return -1; | |
927 | } | |
928 | } | |
929 | ||
930 | return 0; | |
931 | } | |
932 | ||
e27c88fe GH |
933 | int qemu_opts_foreach(QemuOptsList *list, qemu_opts_loopfunc func, void *opaque, |
934 | int abort_on_failure) | |
935 | { | |
827b0813 | 936 | Location loc; |
e27c88fe GH |
937 | QemuOpts *opts; |
938 | int rc = 0; | |
939 | ||
827b0813 | 940 | loc_push_none(&loc); |
72cf2d4f | 941 | QTAILQ_FOREACH(opts, &list->head, next) { |
827b0813 | 942 | loc_restore(&opts->loc); |
4a2594dd | 943 | rc |= func(opts, opaque); |
e27c88fe GH |
944 | if (abort_on_failure && rc != 0) |
945 | break; | |
946 | } | |
827b0813 | 947 | loc_pop(&loc); |
e27c88fe GH |
948 | return rc; |
949 | } |