1baacf047SPaolo Bonzini /* 2baacf047SPaolo Bonzini * Commandline option parsing functions 3baacf047SPaolo Bonzini * 4baacf047SPaolo Bonzini * Copyright (c) 2003-2008 Fabrice Bellard 5baacf047SPaolo Bonzini * Copyright (c) 2009 Kevin Wolf <kwolf@redhat.com> 6baacf047SPaolo Bonzini * 7baacf047SPaolo Bonzini * Permission is hereby granted, free of charge, to any person obtaining a copy 8baacf047SPaolo Bonzini * of this software and associated documentation files (the "Software"), to deal 9baacf047SPaolo Bonzini * in the Software without restriction, including without limitation the rights 10baacf047SPaolo Bonzini * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 11baacf047SPaolo Bonzini * copies of the Software, and to permit persons to whom the Software is 12baacf047SPaolo Bonzini * furnished to do so, subject to the following conditions: 13baacf047SPaolo Bonzini * 14baacf047SPaolo Bonzini * The above copyright notice and this permission notice shall be included in 15baacf047SPaolo Bonzini * all copies or substantial portions of the Software. 16baacf047SPaolo Bonzini * 17baacf047SPaolo Bonzini * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 18baacf047SPaolo Bonzini * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 19baacf047SPaolo Bonzini * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 20baacf047SPaolo Bonzini * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 21baacf047SPaolo Bonzini * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 22baacf047SPaolo Bonzini * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 23baacf047SPaolo Bonzini * THE SOFTWARE. 24baacf047SPaolo Bonzini */ 25baacf047SPaolo Bonzini 26baacf047SPaolo Bonzini #include <stdio.h> 27baacf047SPaolo Bonzini #include <string.h> 28baacf047SPaolo Bonzini 29baacf047SPaolo Bonzini #include "qemu-common.h" 30baacf047SPaolo Bonzini #include "qemu/error-report.h" 31baacf047SPaolo Bonzini #include "qapi/qmp/types.h" 32baacf047SPaolo Bonzini #include "qapi/error.h" 33baacf047SPaolo Bonzini #include "qapi/qmp/qerror.h" 34baacf047SPaolo Bonzini #include "qemu/option_int.h" 35baacf047SPaolo Bonzini 36baacf047SPaolo Bonzini /* 37baacf047SPaolo Bonzini * Extracts the name of an option from the parameter string (p points at the 38baacf047SPaolo Bonzini * first byte of the option name) 39baacf047SPaolo Bonzini * 40baacf047SPaolo Bonzini * The option name is delimited by delim (usually , or =) or the string end 41baacf047SPaolo Bonzini * and is copied into buf. If the option name is longer than buf_size, it is 42baacf047SPaolo Bonzini * truncated. buf is always zero terminated. 43baacf047SPaolo Bonzini * 44baacf047SPaolo Bonzini * The return value is the position of the delimiter/zero byte after the option 45baacf047SPaolo Bonzini * name in p. 46baacf047SPaolo Bonzini */ 47baacf047SPaolo Bonzini const char *get_opt_name(char *buf, int buf_size, const char *p, char delim) 48baacf047SPaolo Bonzini { 49baacf047SPaolo Bonzini char *q; 50baacf047SPaolo Bonzini 51baacf047SPaolo Bonzini q = buf; 52baacf047SPaolo Bonzini while (*p != '\0' && *p != delim) { 53baacf047SPaolo Bonzini if (q && (q - buf) < buf_size - 1) 54baacf047SPaolo Bonzini *q++ = *p; 55baacf047SPaolo Bonzini p++; 56baacf047SPaolo Bonzini } 57baacf047SPaolo Bonzini if (q) 58baacf047SPaolo Bonzini *q = '\0'; 59baacf047SPaolo Bonzini 60baacf047SPaolo Bonzini return p; 61baacf047SPaolo Bonzini } 62baacf047SPaolo Bonzini 63baacf047SPaolo Bonzini /* 64baacf047SPaolo Bonzini * Extracts the value of an option from the parameter string p (p points at the 65baacf047SPaolo Bonzini * first byte of the option value) 66baacf047SPaolo Bonzini * 67baacf047SPaolo Bonzini * This function is comparable to get_opt_name with the difference that the 68baacf047SPaolo Bonzini * delimiter is fixed to be comma which starts a new option. To specify an 69baacf047SPaolo Bonzini * option value that contains commas, double each comma. 70baacf047SPaolo Bonzini */ 71baacf047SPaolo Bonzini const char *get_opt_value(char *buf, int buf_size, const char *p) 72baacf047SPaolo Bonzini { 73baacf047SPaolo Bonzini char *q; 74baacf047SPaolo Bonzini 75baacf047SPaolo Bonzini q = buf; 76baacf047SPaolo Bonzini while (*p != '\0') { 77baacf047SPaolo Bonzini if (*p == ',') { 78baacf047SPaolo Bonzini if (*(p + 1) != ',') 79baacf047SPaolo Bonzini break; 80baacf047SPaolo Bonzini p++; 81baacf047SPaolo Bonzini } 82baacf047SPaolo Bonzini if (q && (q - buf) < buf_size - 1) 83baacf047SPaolo Bonzini *q++ = *p; 84baacf047SPaolo Bonzini p++; 85baacf047SPaolo Bonzini } 86baacf047SPaolo Bonzini if (q) 87baacf047SPaolo Bonzini *q = '\0'; 88baacf047SPaolo Bonzini 89baacf047SPaolo Bonzini return p; 90baacf047SPaolo Bonzini } 91baacf047SPaolo Bonzini 92baacf047SPaolo Bonzini int get_next_param_value(char *buf, int buf_size, 93baacf047SPaolo Bonzini const char *tag, const char **pstr) 94baacf047SPaolo Bonzini { 95baacf047SPaolo Bonzini const char *p; 96baacf047SPaolo Bonzini char option[128]; 97baacf047SPaolo Bonzini 98baacf047SPaolo Bonzini p = *pstr; 99baacf047SPaolo Bonzini for(;;) { 100baacf047SPaolo Bonzini p = get_opt_name(option, sizeof(option), p, '='); 101baacf047SPaolo Bonzini if (*p != '=') 102baacf047SPaolo Bonzini break; 103baacf047SPaolo Bonzini p++; 104baacf047SPaolo Bonzini if (!strcmp(tag, option)) { 105baacf047SPaolo Bonzini *pstr = get_opt_value(buf, buf_size, p); 106baacf047SPaolo Bonzini if (**pstr == ',') { 107baacf047SPaolo Bonzini (*pstr)++; 108baacf047SPaolo Bonzini } 109baacf047SPaolo Bonzini return strlen(buf); 110baacf047SPaolo Bonzini } else { 111baacf047SPaolo Bonzini p = get_opt_value(NULL, 0, p); 112baacf047SPaolo Bonzini } 113baacf047SPaolo Bonzini if (*p != ',') 114baacf047SPaolo Bonzini break; 115baacf047SPaolo Bonzini p++; 116baacf047SPaolo Bonzini } 117baacf047SPaolo Bonzini return 0; 118baacf047SPaolo Bonzini } 119baacf047SPaolo Bonzini 120baacf047SPaolo Bonzini int get_param_value(char *buf, int buf_size, 121baacf047SPaolo Bonzini const char *tag, const char *str) 122baacf047SPaolo Bonzini { 123baacf047SPaolo Bonzini return get_next_param_value(buf, buf_size, tag, &str); 124baacf047SPaolo Bonzini } 125baacf047SPaolo Bonzini 126baacf047SPaolo Bonzini static void parse_option_bool(const char *name, const char *value, bool *ret, 127baacf047SPaolo Bonzini Error **errp) 128baacf047SPaolo Bonzini { 129baacf047SPaolo Bonzini if (value != NULL) { 130baacf047SPaolo Bonzini if (!strcmp(value, "on")) { 131baacf047SPaolo Bonzini *ret = 1; 132baacf047SPaolo Bonzini } else if (!strcmp(value, "off")) { 133baacf047SPaolo Bonzini *ret = 0; 134baacf047SPaolo Bonzini } else { 135baacf047SPaolo Bonzini error_set(errp,QERR_INVALID_PARAMETER_VALUE, name, "'on' or 'off'"); 136baacf047SPaolo Bonzini } 137baacf047SPaolo Bonzini } else { 138baacf047SPaolo Bonzini *ret = 1; 139baacf047SPaolo Bonzini } 140baacf047SPaolo Bonzini } 141baacf047SPaolo Bonzini 142baacf047SPaolo Bonzini static void parse_option_number(const char *name, const char *value, 143baacf047SPaolo Bonzini uint64_t *ret, Error **errp) 144baacf047SPaolo Bonzini { 145baacf047SPaolo Bonzini char *postfix; 146baacf047SPaolo Bonzini uint64_t number; 147baacf047SPaolo Bonzini 148baacf047SPaolo Bonzini if (value != NULL) { 149baacf047SPaolo Bonzini number = strtoull(value, &postfix, 0); 150baacf047SPaolo Bonzini if (*postfix != '\0') { 151baacf047SPaolo Bonzini error_set(errp, QERR_INVALID_PARAMETER_VALUE, name, "a number"); 152baacf047SPaolo Bonzini return; 153baacf047SPaolo Bonzini } 154baacf047SPaolo Bonzini *ret = number; 155baacf047SPaolo Bonzini } else { 156baacf047SPaolo Bonzini error_set(errp, QERR_INVALID_PARAMETER_VALUE, name, "a number"); 157baacf047SPaolo Bonzini } 158baacf047SPaolo Bonzini } 159baacf047SPaolo Bonzini 1605e89db76SChunyan Liu static const QemuOptDesc *find_desc_by_name(const QemuOptDesc *desc, 1615e89db76SChunyan Liu const char *name) 1625e89db76SChunyan Liu { 1635e89db76SChunyan Liu int i; 1645e89db76SChunyan Liu 1655e89db76SChunyan Liu for (i = 0; desc[i].name != NULL; i++) { 1665e89db76SChunyan Liu if (strcmp(desc[i].name, name) == 0) { 1675e89db76SChunyan Liu return &desc[i]; 1685e89db76SChunyan Liu } 1695e89db76SChunyan Liu } 1705e89db76SChunyan Liu 1715e89db76SChunyan Liu return NULL; 1725e89db76SChunyan Liu } 1735e89db76SChunyan Liu 174e8cd45c7SVasilis Liaskovitis void parse_option_size(const char *name, const char *value, 175baacf047SPaolo Bonzini uint64_t *ret, Error **errp) 176baacf047SPaolo Bonzini { 177baacf047SPaolo Bonzini char *postfix; 178baacf047SPaolo Bonzini double sizef; 179baacf047SPaolo Bonzini 180baacf047SPaolo Bonzini if (value != NULL) { 181baacf047SPaolo Bonzini sizef = strtod(value, &postfix); 182baacf047SPaolo Bonzini switch (*postfix) { 183baacf047SPaolo Bonzini case 'T': 184baacf047SPaolo Bonzini sizef *= 1024; 185baacf047SPaolo Bonzini /* fall through */ 186baacf047SPaolo Bonzini case 'G': 187baacf047SPaolo Bonzini sizef *= 1024; 188baacf047SPaolo Bonzini /* fall through */ 189baacf047SPaolo Bonzini case 'M': 190baacf047SPaolo Bonzini sizef *= 1024; 191baacf047SPaolo Bonzini /* fall through */ 192baacf047SPaolo Bonzini case 'K': 193baacf047SPaolo Bonzini case 'k': 194baacf047SPaolo Bonzini sizef *= 1024; 195baacf047SPaolo Bonzini /* fall through */ 196baacf047SPaolo Bonzini case 'b': 197baacf047SPaolo Bonzini case '\0': 198baacf047SPaolo Bonzini *ret = (uint64_t) sizef; 199baacf047SPaolo Bonzini break; 200baacf047SPaolo Bonzini default: 201baacf047SPaolo Bonzini error_set(errp, QERR_INVALID_PARAMETER_VALUE, name, "a size"); 2027216ae3dSMarkus Armbruster #if 0 /* conversion from qerror_report() to error_set() broke this: */ 203baacf047SPaolo Bonzini error_printf_unless_qmp("You may use k, M, G or T suffixes for " 204baacf047SPaolo Bonzini "kilobytes, megabytes, gigabytes and terabytes.\n"); 2057216ae3dSMarkus Armbruster #endif 206baacf047SPaolo Bonzini return; 207baacf047SPaolo Bonzini } 208baacf047SPaolo Bonzini } else { 209baacf047SPaolo Bonzini error_set(errp, QERR_INVALID_PARAMETER_VALUE, name, "a size"); 210baacf047SPaolo Bonzini } 211baacf047SPaolo Bonzini } 212baacf047SPaolo Bonzini 2137cc07ab8SKevin Wolf bool has_help_option(const char *param) 2147cc07ab8SKevin Wolf { 2157cc07ab8SKevin Wolf size_t buflen = strlen(param) + 1; 21696c044afSMarkus Armbruster char *buf = g_malloc(buflen); 2177cc07ab8SKevin Wolf const char *p = param; 2187cc07ab8SKevin Wolf bool result = false; 2197cc07ab8SKevin Wolf 2207cc07ab8SKevin Wolf while (*p) { 2217cc07ab8SKevin Wolf p = get_opt_value(buf, buflen, p); 2227cc07ab8SKevin Wolf if (*p) { 2237cc07ab8SKevin Wolf p++; 2247cc07ab8SKevin Wolf } 2257cc07ab8SKevin Wolf 2267cc07ab8SKevin Wolf if (is_help_option(buf)) { 2277cc07ab8SKevin Wolf result = true; 2287cc07ab8SKevin Wolf goto out; 2297cc07ab8SKevin Wolf } 2307cc07ab8SKevin Wolf } 2317cc07ab8SKevin Wolf 2327cc07ab8SKevin Wolf out: 233c0462f6dSMarkus Armbruster g_free(buf); 2347cc07ab8SKevin Wolf return result; 2357cc07ab8SKevin Wolf } 2367cc07ab8SKevin Wolf 2377cc07ab8SKevin Wolf bool is_valid_option_list(const char *param) 2387cc07ab8SKevin Wolf { 2397cc07ab8SKevin Wolf size_t buflen = strlen(param) + 1; 24096c044afSMarkus Armbruster char *buf = g_malloc(buflen); 2417cc07ab8SKevin Wolf const char *p = param; 2427cc07ab8SKevin Wolf bool result = true; 2437cc07ab8SKevin Wolf 2447cc07ab8SKevin Wolf while (*p) { 2457cc07ab8SKevin Wolf p = get_opt_value(buf, buflen, p); 2467cc07ab8SKevin Wolf if (*p && !*++p) { 2477cc07ab8SKevin Wolf result = false; 2487cc07ab8SKevin Wolf goto out; 2497cc07ab8SKevin Wolf } 2507cc07ab8SKevin Wolf 2517cc07ab8SKevin Wolf if (!*buf || *buf == ',') { 2527cc07ab8SKevin Wolf result = false; 2537cc07ab8SKevin Wolf goto out; 2547cc07ab8SKevin Wolf } 2557cc07ab8SKevin Wolf } 2567cc07ab8SKevin Wolf 2577cc07ab8SKevin Wolf out: 258c0462f6dSMarkus Armbruster g_free(buf); 2597cc07ab8SKevin Wolf return result; 2607cc07ab8SKevin Wolf } 2617cc07ab8SKevin Wolf 262504189a9SChunyan Liu void qemu_opts_print_help(QemuOptsList *list) 263504189a9SChunyan Liu { 264504189a9SChunyan Liu QemuOptDesc *desc; 265504189a9SChunyan Liu 266504189a9SChunyan Liu assert(list); 267504189a9SChunyan Liu desc = list->desc; 268504189a9SChunyan Liu printf("Supported options:\n"); 269504189a9SChunyan Liu while (desc && desc->name) { 270504189a9SChunyan Liu printf("%-16s %s\n", desc->name, 271504189a9SChunyan Liu desc->help ? desc->help : "No description available"); 272504189a9SChunyan Liu desc++; 273504189a9SChunyan Liu } 274504189a9SChunyan Liu } 275baacf047SPaolo Bonzini /* ------------------------------------------------------------------ */ 276baacf047SPaolo Bonzini 27774c3c197SChunyan Liu QemuOpt *qemu_opt_find(QemuOpts *opts, const char *name) 278baacf047SPaolo Bonzini { 279baacf047SPaolo Bonzini QemuOpt *opt; 280baacf047SPaolo Bonzini 281baacf047SPaolo Bonzini QTAILQ_FOREACH_REVERSE(opt, &opts->head, QemuOptHead, next) { 282baacf047SPaolo Bonzini if (strcmp(opt->name, name) != 0) 283baacf047SPaolo Bonzini continue; 284baacf047SPaolo Bonzini return opt; 285baacf047SPaolo Bonzini } 286baacf047SPaolo Bonzini return NULL; 287baacf047SPaolo Bonzini } 288baacf047SPaolo Bonzini 289fc345512SChunyan Liu static void qemu_opt_del(QemuOpt *opt) 290fc345512SChunyan Liu { 291fc345512SChunyan Liu QTAILQ_REMOVE(&opt->opts->head, opt, next); 292fc345512SChunyan Liu g_free(opt->name); 293fc345512SChunyan Liu g_free(opt->str); 294fc345512SChunyan Liu g_free(opt); 295fc345512SChunyan Liu } 296fc345512SChunyan Liu 297782730b0SChunyan Liu /* qemu_opt_set allows many settings for the same option. 298782730b0SChunyan Liu * This function deletes all settings for an option. 299782730b0SChunyan Liu */ 300782730b0SChunyan Liu static void qemu_opt_del_all(QemuOpts *opts, const char *name) 301782730b0SChunyan Liu { 302782730b0SChunyan Liu QemuOpt *opt, *next_opt; 303782730b0SChunyan Liu 304782730b0SChunyan Liu QTAILQ_FOREACH_SAFE(opt, &opts->head, next, next_opt) { 305782730b0SChunyan Liu if (!strcmp(opt->name, name)) { 306782730b0SChunyan Liu qemu_opt_del(opt); 307782730b0SChunyan Liu } 308782730b0SChunyan Liu } 309782730b0SChunyan Liu } 310782730b0SChunyan Liu 311baacf047SPaolo Bonzini const char *qemu_opt_get(QemuOpts *opts, const char *name) 312baacf047SPaolo Bonzini { 313435db4cfSChunyan Liu QemuOpt *opt; 31409722032SChunyan Liu 315435db4cfSChunyan Liu if (opts == NULL) { 316435db4cfSChunyan Liu return NULL; 317435db4cfSChunyan Liu } 318435db4cfSChunyan Liu 319435db4cfSChunyan Liu opt = qemu_opt_find(opts, name); 32009722032SChunyan Liu if (!opt) { 32109722032SChunyan Liu const QemuOptDesc *desc = find_desc_by_name(opts->list->desc, name); 32209722032SChunyan Liu if (desc && desc->def_value_str) { 32309722032SChunyan Liu return desc->def_value_str; 32409722032SChunyan Liu } 32509722032SChunyan Liu } 326baacf047SPaolo Bonzini return opt ? opt->str : NULL; 327baacf047SPaolo Bonzini } 328baacf047SPaolo Bonzini 329782730b0SChunyan Liu /* Get a known option (or its default) and remove it from the list 330782730b0SChunyan Liu * all in one action. Return a malloced string of the option value. 331782730b0SChunyan Liu * Result must be freed by caller with g_free(). 332782730b0SChunyan Liu */ 333782730b0SChunyan Liu char *qemu_opt_get_del(QemuOpts *opts, const char *name) 334782730b0SChunyan Liu { 335782730b0SChunyan Liu QemuOpt *opt; 336782730b0SChunyan Liu const QemuOptDesc *desc; 337782730b0SChunyan Liu char *str = NULL; 338782730b0SChunyan Liu 339782730b0SChunyan Liu if (opts == NULL) { 340782730b0SChunyan Liu return NULL; 341782730b0SChunyan Liu } 342782730b0SChunyan Liu 343782730b0SChunyan Liu opt = qemu_opt_find(opts, name); 344782730b0SChunyan Liu if (!opt) { 345782730b0SChunyan Liu desc = find_desc_by_name(opts->list->desc, name); 346782730b0SChunyan Liu if (desc && desc->def_value_str) { 347782730b0SChunyan Liu str = g_strdup(desc->def_value_str); 348782730b0SChunyan Liu } 349782730b0SChunyan Liu return str; 350782730b0SChunyan Liu } 351782730b0SChunyan Liu str = opt->str; 352782730b0SChunyan Liu opt->str = NULL; 353782730b0SChunyan Liu qemu_opt_del_all(opts, name); 354782730b0SChunyan Liu return str; 355782730b0SChunyan Liu } 356782730b0SChunyan Liu 357baacf047SPaolo Bonzini bool qemu_opt_has_help_opt(QemuOpts *opts) 358baacf047SPaolo Bonzini { 359baacf047SPaolo Bonzini QemuOpt *opt; 360baacf047SPaolo Bonzini 361baacf047SPaolo Bonzini QTAILQ_FOREACH_REVERSE(opt, &opts->head, QemuOptHead, next) { 362baacf047SPaolo Bonzini if (is_help_option(opt->name)) { 363baacf047SPaolo Bonzini return true; 364baacf047SPaolo Bonzini } 365baacf047SPaolo Bonzini } 366baacf047SPaolo Bonzini return false; 367baacf047SPaolo Bonzini } 368baacf047SPaolo Bonzini 369782730b0SChunyan Liu static bool qemu_opt_get_bool_helper(QemuOpts *opts, const char *name, 370782730b0SChunyan Liu bool defval, bool del) 371baacf047SPaolo Bonzini { 372435db4cfSChunyan Liu QemuOpt *opt; 373782730b0SChunyan Liu bool ret = defval; 374baacf047SPaolo Bonzini 375435db4cfSChunyan Liu if (opts == NULL) { 376435db4cfSChunyan Liu return ret; 377435db4cfSChunyan Liu } 378435db4cfSChunyan Liu 379435db4cfSChunyan Liu opt = qemu_opt_find(opts, name); 38009722032SChunyan Liu if (opt == NULL) { 38109722032SChunyan Liu const QemuOptDesc *desc = find_desc_by_name(opts->list->desc, name); 38209722032SChunyan Liu if (desc && desc->def_value_str) { 383782730b0SChunyan Liu parse_option_bool(name, desc->def_value_str, &ret, &error_abort); 38409722032SChunyan Liu } 385782730b0SChunyan Liu return ret; 38609722032SChunyan Liu } 387baacf047SPaolo Bonzini assert(opt->desc && opt->desc->type == QEMU_OPT_BOOL); 388782730b0SChunyan Liu ret = opt->value.boolean; 389782730b0SChunyan Liu if (del) { 390782730b0SChunyan Liu qemu_opt_del_all(opts, name); 391782730b0SChunyan Liu } 392782730b0SChunyan Liu return ret; 393782730b0SChunyan Liu } 394782730b0SChunyan Liu 395782730b0SChunyan Liu bool qemu_opt_get_bool(QemuOpts *opts, const char *name, bool defval) 396782730b0SChunyan Liu { 397782730b0SChunyan Liu return qemu_opt_get_bool_helper(opts, name, defval, false); 398782730b0SChunyan Liu } 399782730b0SChunyan Liu 400782730b0SChunyan Liu bool qemu_opt_get_bool_del(QemuOpts *opts, const char *name, bool defval) 401782730b0SChunyan Liu { 402782730b0SChunyan Liu return qemu_opt_get_bool_helper(opts, name, defval, true); 403782730b0SChunyan Liu } 404782730b0SChunyan Liu 405782730b0SChunyan Liu static uint64_t qemu_opt_get_number_helper(QemuOpts *opts, const char *name, 406782730b0SChunyan Liu uint64_t defval, bool del) 407782730b0SChunyan Liu { 408435db4cfSChunyan Liu QemuOpt *opt; 409782730b0SChunyan Liu uint64_t ret = defval; 410782730b0SChunyan Liu 411435db4cfSChunyan Liu if (opts == NULL) { 412435db4cfSChunyan Liu return ret; 413435db4cfSChunyan Liu } 414435db4cfSChunyan Liu 415435db4cfSChunyan Liu opt = qemu_opt_find(opts, name); 416782730b0SChunyan Liu if (opt == NULL) { 417782730b0SChunyan Liu const QemuOptDesc *desc = find_desc_by_name(opts->list->desc, name); 418782730b0SChunyan Liu if (desc && desc->def_value_str) { 419782730b0SChunyan Liu parse_option_number(name, desc->def_value_str, &ret, &error_abort); 420782730b0SChunyan Liu } 421782730b0SChunyan Liu return ret; 422782730b0SChunyan Liu } 423782730b0SChunyan Liu assert(opt->desc && opt->desc->type == QEMU_OPT_NUMBER); 424782730b0SChunyan Liu ret = opt->value.uint; 425782730b0SChunyan Liu if (del) { 426782730b0SChunyan Liu qemu_opt_del_all(opts, name); 427782730b0SChunyan Liu } 428782730b0SChunyan Liu return ret; 429baacf047SPaolo Bonzini } 430baacf047SPaolo Bonzini 431baacf047SPaolo Bonzini uint64_t qemu_opt_get_number(QemuOpts *opts, const char *name, uint64_t defval) 432baacf047SPaolo Bonzini { 433782730b0SChunyan Liu return qemu_opt_get_number_helper(opts, name, defval, false); 434782730b0SChunyan Liu } 435782730b0SChunyan Liu 436782730b0SChunyan Liu uint64_t qemu_opt_get_number_del(QemuOpts *opts, const char *name, 437782730b0SChunyan Liu uint64_t defval) 438782730b0SChunyan Liu { 439782730b0SChunyan Liu return qemu_opt_get_number_helper(opts, name, defval, true); 440782730b0SChunyan Liu } 441782730b0SChunyan Liu 442782730b0SChunyan Liu static uint64_t qemu_opt_get_size_helper(QemuOpts *opts, const char *name, 443782730b0SChunyan Liu uint64_t defval, bool del) 444782730b0SChunyan Liu { 445435db4cfSChunyan Liu QemuOpt *opt; 446782730b0SChunyan Liu uint64_t ret = defval; 447baacf047SPaolo Bonzini 448435db4cfSChunyan Liu if (opts == NULL) { 449435db4cfSChunyan Liu return ret; 450435db4cfSChunyan Liu } 451435db4cfSChunyan Liu 452435db4cfSChunyan Liu opt = qemu_opt_find(opts, name); 45309722032SChunyan Liu if (opt == NULL) { 45409722032SChunyan Liu const QemuOptDesc *desc = find_desc_by_name(opts->list->desc, name); 45509722032SChunyan Liu if (desc && desc->def_value_str) { 456782730b0SChunyan Liu parse_option_size(name, desc->def_value_str, &ret, &error_abort); 45709722032SChunyan Liu } 458782730b0SChunyan Liu return ret; 45909722032SChunyan Liu } 460782730b0SChunyan Liu assert(opt->desc && opt->desc->type == QEMU_OPT_SIZE); 461782730b0SChunyan Liu ret = opt->value.uint; 462782730b0SChunyan Liu if (del) { 463782730b0SChunyan Liu qemu_opt_del_all(opts, name); 464782730b0SChunyan Liu } 465782730b0SChunyan Liu return ret; 466baacf047SPaolo Bonzini } 467baacf047SPaolo Bonzini 468baacf047SPaolo Bonzini uint64_t qemu_opt_get_size(QemuOpts *opts, const char *name, uint64_t defval) 469baacf047SPaolo Bonzini { 470782730b0SChunyan Liu return qemu_opt_get_size_helper(opts, name, defval, false); 471782730b0SChunyan Liu } 472baacf047SPaolo Bonzini 473782730b0SChunyan Liu uint64_t qemu_opt_get_size_del(QemuOpts *opts, const char *name, 474782730b0SChunyan Liu uint64_t defval) 475782730b0SChunyan Liu { 476782730b0SChunyan Liu return qemu_opt_get_size_helper(opts, name, defval, true); 477baacf047SPaolo Bonzini } 478baacf047SPaolo Bonzini 479baacf047SPaolo Bonzini static void qemu_opt_parse(QemuOpt *opt, Error **errp) 480baacf047SPaolo Bonzini { 481baacf047SPaolo Bonzini if (opt->desc == NULL) 482baacf047SPaolo Bonzini return; 483baacf047SPaolo Bonzini 484baacf047SPaolo Bonzini switch (opt->desc->type) { 485baacf047SPaolo Bonzini case QEMU_OPT_STRING: 486baacf047SPaolo Bonzini /* nothing */ 487baacf047SPaolo Bonzini return; 488baacf047SPaolo Bonzini case QEMU_OPT_BOOL: 489baacf047SPaolo Bonzini parse_option_bool(opt->name, opt->str, &opt->value.boolean, errp); 490baacf047SPaolo Bonzini break; 491baacf047SPaolo Bonzini case QEMU_OPT_NUMBER: 492baacf047SPaolo Bonzini parse_option_number(opt->name, opt->str, &opt->value.uint, errp); 493baacf047SPaolo Bonzini break; 494baacf047SPaolo Bonzini case QEMU_OPT_SIZE: 495baacf047SPaolo Bonzini parse_option_size(opt->name, opt->str, &opt->value.uint, errp); 496baacf047SPaolo Bonzini break; 497baacf047SPaolo Bonzini default: 498baacf047SPaolo Bonzini abort(); 499baacf047SPaolo Bonzini } 500baacf047SPaolo Bonzini } 501baacf047SPaolo Bonzini 502baacf047SPaolo Bonzini static bool opts_accepts_any(const QemuOpts *opts) 503baacf047SPaolo Bonzini { 504baacf047SPaolo Bonzini return opts->list->desc[0].name == NULL; 505baacf047SPaolo Bonzini } 506baacf047SPaolo Bonzini 5070dd6c526SKevin Wolf int qemu_opt_unset(QemuOpts *opts, const char *name) 5080dd6c526SKevin Wolf { 5090dd6c526SKevin Wolf QemuOpt *opt = qemu_opt_find(opts, name); 5100dd6c526SKevin Wolf 5110dd6c526SKevin Wolf assert(opts_accepts_any(opts)); 5120dd6c526SKevin Wolf 5130dd6c526SKevin Wolf if (opt == NULL) { 5140dd6c526SKevin Wolf return -1; 5150dd6c526SKevin Wolf } else { 5160dd6c526SKevin Wolf qemu_opt_del(opt); 5170dd6c526SKevin Wolf return 0; 5180dd6c526SKevin Wolf } 5190dd6c526SKevin Wolf } 5200dd6c526SKevin Wolf 521baacf047SPaolo Bonzini static void opt_set(QemuOpts *opts, const char *name, const char *value, 522baacf047SPaolo Bonzini bool prepend, Error **errp) 523baacf047SPaolo Bonzini { 524baacf047SPaolo Bonzini QemuOpt *opt; 525baacf047SPaolo Bonzini const QemuOptDesc *desc; 526baacf047SPaolo Bonzini Error *local_err = NULL; 527baacf047SPaolo Bonzini 528baacf047SPaolo Bonzini desc = find_desc_by_name(opts->list->desc, name); 529baacf047SPaolo Bonzini if (!desc && !opts_accepts_any(opts)) { 530baacf047SPaolo Bonzini error_set(errp, QERR_INVALID_PARAMETER, name); 531baacf047SPaolo Bonzini return; 532baacf047SPaolo Bonzini } 533baacf047SPaolo Bonzini 534baacf047SPaolo Bonzini opt = g_malloc0(sizeof(*opt)); 535baacf047SPaolo Bonzini opt->name = g_strdup(name); 536baacf047SPaolo Bonzini opt->opts = opts; 537baacf047SPaolo Bonzini if (prepend) { 538baacf047SPaolo Bonzini QTAILQ_INSERT_HEAD(&opts->head, opt, next); 539baacf047SPaolo Bonzini } else { 540baacf047SPaolo Bonzini QTAILQ_INSERT_TAIL(&opts->head, opt, next); 541baacf047SPaolo Bonzini } 542baacf047SPaolo Bonzini opt->desc = desc; 543baacf047SPaolo Bonzini opt->str = g_strdup(value); 544baacf047SPaolo Bonzini qemu_opt_parse(opt, &local_err); 54584d18f06SMarkus Armbruster if (local_err) { 546baacf047SPaolo Bonzini error_propagate(errp, local_err); 547baacf047SPaolo Bonzini qemu_opt_del(opt); 548baacf047SPaolo Bonzini } 549baacf047SPaolo Bonzini } 550baacf047SPaolo Bonzini 551baacf047SPaolo Bonzini int qemu_opt_set(QemuOpts *opts, const char *name, const char *value) 552baacf047SPaolo Bonzini { 553baacf047SPaolo Bonzini Error *local_err = NULL; 554baacf047SPaolo Bonzini 555baacf047SPaolo Bonzini opt_set(opts, name, value, false, &local_err); 55684d18f06SMarkus Armbruster if (local_err) { 557baacf047SPaolo Bonzini qerror_report_err(local_err); 558baacf047SPaolo Bonzini error_free(local_err); 559baacf047SPaolo Bonzini return -1; 560baacf047SPaolo Bonzini } 561baacf047SPaolo Bonzini 562baacf047SPaolo Bonzini return 0; 563baacf047SPaolo Bonzini } 564baacf047SPaolo Bonzini 565baacf047SPaolo Bonzini void qemu_opt_set_err(QemuOpts *opts, const char *name, const char *value, 566baacf047SPaolo Bonzini Error **errp) 567baacf047SPaolo Bonzini { 568baacf047SPaolo Bonzini opt_set(opts, name, value, false, errp); 569baacf047SPaolo Bonzini } 570baacf047SPaolo Bonzini 571cccb7967SMarkus Armbruster void qemu_opt_set_bool(QemuOpts *opts, const char *name, bool val, 572cccb7967SMarkus Armbruster Error **errp) 573baacf047SPaolo Bonzini { 574baacf047SPaolo Bonzini QemuOpt *opt; 575baacf047SPaolo Bonzini const QemuOptDesc *desc = opts->list->desc; 576baacf047SPaolo Bonzini 577baacf047SPaolo Bonzini opt = g_malloc0(sizeof(*opt)); 578baacf047SPaolo Bonzini opt->desc = find_desc_by_name(desc, name); 579baacf047SPaolo Bonzini if (!opt->desc && !opts_accepts_any(opts)) { 580cccb7967SMarkus Armbruster error_set(errp, QERR_INVALID_PARAMETER, name); 581baacf047SPaolo Bonzini g_free(opt); 582cccb7967SMarkus Armbruster return; 583baacf047SPaolo Bonzini } 584baacf047SPaolo Bonzini 585baacf047SPaolo Bonzini opt->name = g_strdup(name); 586baacf047SPaolo Bonzini opt->opts = opts; 587baacf047SPaolo Bonzini opt->value.boolean = !!val; 588baacf047SPaolo Bonzini opt->str = g_strdup(val ? "on" : "off"); 589baacf047SPaolo Bonzini QTAILQ_INSERT_TAIL(&opts->head, opt, next); 590baacf047SPaolo Bonzini } 591baacf047SPaolo Bonzini 592*39101f25SMarkus Armbruster void qemu_opt_set_number(QemuOpts *opts, const char *name, int64_t val, 593*39101f25SMarkus Armbruster Error **errp) 594baacf047SPaolo Bonzini { 595baacf047SPaolo Bonzini QemuOpt *opt; 596baacf047SPaolo Bonzini const QemuOptDesc *desc = opts->list->desc; 597baacf047SPaolo Bonzini 598baacf047SPaolo Bonzini opt = g_malloc0(sizeof(*opt)); 599baacf047SPaolo Bonzini opt->desc = find_desc_by_name(desc, name); 600baacf047SPaolo Bonzini if (!opt->desc && !opts_accepts_any(opts)) { 601*39101f25SMarkus Armbruster error_set(errp, QERR_INVALID_PARAMETER, name); 602baacf047SPaolo Bonzini g_free(opt); 603*39101f25SMarkus Armbruster return; 604baacf047SPaolo Bonzini } 605baacf047SPaolo Bonzini 606baacf047SPaolo Bonzini opt->name = g_strdup(name); 607baacf047SPaolo Bonzini opt->opts = opts; 608baacf047SPaolo Bonzini opt->value.uint = val; 609baacf047SPaolo Bonzini opt->str = g_strdup_printf("%" PRId64, val); 610baacf047SPaolo Bonzini QTAILQ_INSERT_TAIL(&opts->head, opt, next); 611baacf047SPaolo Bonzini } 612baacf047SPaolo Bonzini 613baacf047SPaolo Bonzini int qemu_opt_foreach(QemuOpts *opts, qemu_opt_loopfunc func, void *opaque, 614baacf047SPaolo Bonzini int abort_on_failure) 615baacf047SPaolo Bonzini { 616baacf047SPaolo Bonzini QemuOpt *opt; 617baacf047SPaolo Bonzini int rc = 0; 618baacf047SPaolo Bonzini 619baacf047SPaolo Bonzini QTAILQ_FOREACH(opt, &opts->head, next) { 620baacf047SPaolo Bonzini rc = func(opt->name, opt->str, opaque); 621baacf047SPaolo Bonzini if (abort_on_failure && rc != 0) 622baacf047SPaolo Bonzini break; 623baacf047SPaolo Bonzini } 624baacf047SPaolo Bonzini return rc; 625baacf047SPaolo Bonzini } 626baacf047SPaolo Bonzini 627baacf047SPaolo Bonzini QemuOpts *qemu_opts_find(QemuOptsList *list, const char *id) 628baacf047SPaolo Bonzini { 629baacf047SPaolo Bonzini QemuOpts *opts; 630baacf047SPaolo Bonzini 631baacf047SPaolo Bonzini QTAILQ_FOREACH(opts, &list->head, next) { 63296bc97ebSMarkus Armbruster if (!opts->id && !id) { 633baacf047SPaolo Bonzini return opts; 634baacf047SPaolo Bonzini } 63596bc97ebSMarkus Armbruster if (opts->id && id && !strcmp(opts->id, id)) { 636baacf047SPaolo Bonzini return opts; 637baacf047SPaolo Bonzini } 63896bc97ebSMarkus Armbruster } 639baacf047SPaolo Bonzini return NULL; 640baacf047SPaolo Bonzini } 641baacf047SPaolo Bonzini 642baacf047SPaolo Bonzini QemuOpts *qemu_opts_create(QemuOptsList *list, const char *id, 643baacf047SPaolo Bonzini int fail_if_exists, Error **errp) 644baacf047SPaolo Bonzini { 645baacf047SPaolo Bonzini QemuOpts *opts = NULL; 646baacf047SPaolo Bonzini 647baacf047SPaolo Bonzini if (id) { 648f5bebbbbSMarkus Armbruster if (!id_wellformed(id)) { 649baacf047SPaolo Bonzini error_set(errp,QERR_INVALID_PARAMETER_VALUE, "id", "an identifier"); 6507216ae3dSMarkus Armbruster #if 0 /* conversion from qerror_report() to error_set() broke this: */ 651baacf047SPaolo Bonzini error_printf_unless_qmp("Identifiers consist of letters, digits, '-', '.', '_', starting with a letter.\n"); 6527216ae3dSMarkus Armbruster #endif 653baacf047SPaolo Bonzini return NULL; 654baacf047SPaolo Bonzini } 655baacf047SPaolo Bonzini opts = qemu_opts_find(list, id); 656baacf047SPaolo Bonzini if (opts != NULL) { 657baacf047SPaolo Bonzini if (fail_if_exists && !list->merge_lists) { 658f231b88dSCole Robinson error_setg(errp, "Duplicate ID '%s' for %s", id, list->name); 659baacf047SPaolo Bonzini return NULL; 660baacf047SPaolo Bonzini } else { 661baacf047SPaolo Bonzini return opts; 662baacf047SPaolo Bonzini } 663baacf047SPaolo Bonzini } 664baacf047SPaolo Bonzini } else if (list->merge_lists) { 665baacf047SPaolo Bonzini opts = qemu_opts_find(list, NULL); 666baacf047SPaolo Bonzini if (opts) { 667baacf047SPaolo Bonzini return opts; 668baacf047SPaolo Bonzini } 669baacf047SPaolo Bonzini } 670baacf047SPaolo Bonzini opts = g_malloc0(sizeof(*opts)); 671baacf047SPaolo Bonzini opts->id = g_strdup(id); 672baacf047SPaolo Bonzini opts->list = list; 673baacf047SPaolo Bonzini loc_save(&opts->loc); 674baacf047SPaolo Bonzini QTAILQ_INIT(&opts->head); 675baacf047SPaolo Bonzini QTAILQ_INSERT_TAIL(&list->head, opts, next); 676baacf047SPaolo Bonzini return opts; 677baacf047SPaolo Bonzini } 678baacf047SPaolo Bonzini 679baacf047SPaolo Bonzini void qemu_opts_reset(QemuOptsList *list) 680baacf047SPaolo Bonzini { 681baacf047SPaolo Bonzini QemuOpts *opts, *next_opts; 682baacf047SPaolo Bonzini 683baacf047SPaolo Bonzini QTAILQ_FOREACH_SAFE(opts, &list->head, next, next_opts) { 684baacf047SPaolo Bonzini qemu_opts_del(opts); 685baacf047SPaolo Bonzini } 686baacf047SPaolo Bonzini } 687baacf047SPaolo Bonzini 688baacf047SPaolo Bonzini void qemu_opts_loc_restore(QemuOpts *opts) 689baacf047SPaolo Bonzini { 690baacf047SPaolo Bonzini loc_restore(&opts->loc); 691baacf047SPaolo Bonzini } 692baacf047SPaolo Bonzini 693baacf047SPaolo Bonzini int qemu_opts_set(QemuOptsList *list, const char *id, 694baacf047SPaolo Bonzini const char *name, const char *value) 695baacf047SPaolo Bonzini { 696baacf047SPaolo Bonzini QemuOpts *opts; 697baacf047SPaolo Bonzini Error *local_err = NULL; 698baacf047SPaolo Bonzini 699baacf047SPaolo Bonzini opts = qemu_opts_create(list, id, 1, &local_err); 70084d18f06SMarkus Armbruster if (local_err) { 701baacf047SPaolo Bonzini qerror_report_err(local_err); 702baacf047SPaolo Bonzini error_free(local_err); 703baacf047SPaolo Bonzini return -1; 704baacf047SPaolo Bonzini } 705baacf047SPaolo Bonzini return qemu_opt_set(opts, name, value); 706baacf047SPaolo Bonzini } 707baacf047SPaolo Bonzini 708baacf047SPaolo Bonzini const char *qemu_opts_id(QemuOpts *opts) 709baacf047SPaolo Bonzini { 710baacf047SPaolo Bonzini return opts->id; 711baacf047SPaolo Bonzini } 712baacf047SPaolo Bonzini 713326642bcSKevin Wolf /* The id string will be g_free()d by qemu_opts_del */ 714326642bcSKevin Wolf void qemu_opts_set_id(QemuOpts *opts, char *id) 715326642bcSKevin Wolf { 716326642bcSKevin Wolf opts->id = id; 717326642bcSKevin Wolf } 718326642bcSKevin Wolf 719baacf047SPaolo Bonzini void qemu_opts_del(QemuOpts *opts) 720baacf047SPaolo Bonzini { 721baacf047SPaolo Bonzini QemuOpt *opt; 722baacf047SPaolo Bonzini 7234782183dSChunyan Liu if (opts == NULL) { 7244782183dSChunyan Liu return; 7254782183dSChunyan Liu } 7264782183dSChunyan Liu 727baacf047SPaolo Bonzini for (;;) { 728baacf047SPaolo Bonzini opt = QTAILQ_FIRST(&opts->head); 729baacf047SPaolo Bonzini if (opt == NULL) 730baacf047SPaolo Bonzini break; 731baacf047SPaolo Bonzini qemu_opt_del(opt); 732baacf047SPaolo Bonzini } 733baacf047SPaolo Bonzini QTAILQ_REMOVE(&opts->list->head, opts, next); 734baacf047SPaolo Bonzini g_free(opts->id); 735baacf047SPaolo Bonzini g_free(opts); 736baacf047SPaolo Bonzini } 737baacf047SPaolo Bonzini 73843c5d8f8SFam Zheng void qemu_opts_print(QemuOpts *opts, const char *sep) 739baacf047SPaolo Bonzini { 740baacf047SPaolo Bonzini QemuOpt *opt; 74109722032SChunyan Liu QemuOptDesc *desc = opts->list->desc; 742baacf047SPaolo Bonzini 74309722032SChunyan Liu if (desc[0].name == NULL) { 744baacf047SPaolo Bonzini QTAILQ_FOREACH(opt, &opts->head, next) { 74543c5d8f8SFam Zheng printf("%s%s=\"%s\"", sep, opt->name, opt->str); 746baacf047SPaolo Bonzini } 74709722032SChunyan Liu return; 74809722032SChunyan Liu } 74909722032SChunyan Liu for (; desc && desc->name; desc++) { 75009722032SChunyan Liu const char *value; 75109722032SChunyan Liu QemuOpt *opt = qemu_opt_find(opts, desc->name); 75209722032SChunyan Liu 75309722032SChunyan Liu value = opt ? opt->str : desc->def_value_str; 75409722032SChunyan Liu if (!value) { 75509722032SChunyan Liu continue; 75609722032SChunyan Liu } 75709722032SChunyan Liu if (desc->type == QEMU_OPT_STRING) { 75843c5d8f8SFam Zheng printf("%s%s='%s'", sep, desc->name, value); 75909722032SChunyan Liu } else if ((desc->type == QEMU_OPT_SIZE || 76009722032SChunyan Liu desc->type == QEMU_OPT_NUMBER) && opt) { 76143c5d8f8SFam Zheng printf("%s%s=%" PRId64, sep, desc->name, opt->value.uint); 76209722032SChunyan Liu } else { 76343c5d8f8SFam Zheng printf("%s%s=%s", sep, desc->name, value); 76409722032SChunyan Liu } 76509722032SChunyan Liu } 766baacf047SPaolo Bonzini } 767baacf047SPaolo Bonzini 768baacf047SPaolo Bonzini static int opts_do_parse(QemuOpts *opts, const char *params, 769baacf047SPaolo Bonzini const char *firstname, bool prepend) 770baacf047SPaolo Bonzini { 771baacf047SPaolo Bonzini char option[128], value[1024]; 772baacf047SPaolo Bonzini const char *p,*pe,*pc; 773baacf047SPaolo Bonzini Error *local_err = NULL; 774baacf047SPaolo Bonzini 775baacf047SPaolo Bonzini for (p = params; *p != '\0'; p++) { 776baacf047SPaolo Bonzini pe = strchr(p, '='); 777baacf047SPaolo Bonzini pc = strchr(p, ','); 778baacf047SPaolo Bonzini if (!pe || (pc && pc < pe)) { 779baacf047SPaolo Bonzini /* found "foo,more" */ 780baacf047SPaolo Bonzini if (p == params && firstname) { 781baacf047SPaolo Bonzini /* implicitly named first option */ 782baacf047SPaolo Bonzini pstrcpy(option, sizeof(option), firstname); 783baacf047SPaolo Bonzini p = get_opt_value(value, sizeof(value), p); 784baacf047SPaolo Bonzini } else { 785baacf047SPaolo Bonzini /* option without value, probably a flag */ 786baacf047SPaolo Bonzini p = get_opt_name(option, sizeof(option), p, ','); 787baacf047SPaolo Bonzini if (strncmp(option, "no", 2) == 0) { 788baacf047SPaolo Bonzini memmove(option, option+2, strlen(option+2)+1); 789baacf047SPaolo Bonzini pstrcpy(value, sizeof(value), "off"); 790baacf047SPaolo Bonzini } else { 791baacf047SPaolo Bonzini pstrcpy(value, sizeof(value), "on"); 792baacf047SPaolo Bonzini } 793baacf047SPaolo Bonzini } 794baacf047SPaolo Bonzini } else { 795baacf047SPaolo Bonzini /* found "foo=bar,more" */ 796baacf047SPaolo Bonzini p = get_opt_name(option, sizeof(option), p, '='); 797baacf047SPaolo Bonzini if (*p != '=') { 798baacf047SPaolo Bonzini break; 799baacf047SPaolo Bonzini } 800baacf047SPaolo Bonzini p++; 801baacf047SPaolo Bonzini p = get_opt_value(value, sizeof(value), p); 802baacf047SPaolo Bonzini } 803baacf047SPaolo Bonzini if (strcmp(option, "id") != 0) { 804baacf047SPaolo Bonzini /* store and parse */ 805baacf047SPaolo Bonzini opt_set(opts, option, value, prepend, &local_err); 80684d18f06SMarkus Armbruster if (local_err) { 807baacf047SPaolo Bonzini qerror_report_err(local_err); 808baacf047SPaolo Bonzini error_free(local_err); 809baacf047SPaolo Bonzini return -1; 810baacf047SPaolo Bonzini } 811baacf047SPaolo Bonzini } 812baacf047SPaolo Bonzini if (*p != ',') { 813baacf047SPaolo Bonzini break; 814baacf047SPaolo Bonzini } 815baacf047SPaolo Bonzini } 816baacf047SPaolo Bonzini return 0; 817baacf047SPaolo Bonzini } 818baacf047SPaolo Bonzini 819baacf047SPaolo Bonzini int qemu_opts_do_parse(QemuOpts *opts, const char *params, const char *firstname) 820baacf047SPaolo Bonzini { 821baacf047SPaolo Bonzini return opts_do_parse(opts, params, firstname, false); 822baacf047SPaolo Bonzini } 823baacf047SPaolo Bonzini 824baacf047SPaolo Bonzini static QemuOpts *opts_parse(QemuOptsList *list, const char *params, 825baacf047SPaolo Bonzini int permit_abbrev, bool defaults) 826baacf047SPaolo Bonzini { 827baacf047SPaolo Bonzini const char *firstname; 828baacf047SPaolo Bonzini char value[1024], *id = NULL; 829baacf047SPaolo Bonzini const char *p; 830baacf047SPaolo Bonzini QemuOpts *opts; 831baacf047SPaolo Bonzini Error *local_err = NULL; 832baacf047SPaolo Bonzini 833baacf047SPaolo Bonzini assert(!permit_abbrev || list->implied_opt_name); 834baacf047SPaolo Bonzini firstname = permit_abbrev ? list->implied_opt_name : NULL; 835baacf047SPaolo Bonzini 836baacf047SPaolo Bonzini if (strncmp(params, "id=", 3) == 0) { 837baacf047SPaolo Bonzini get_opt_value(value, sizeof(value), params+3); 838baacf047SPaolo Bonzini id = value; 839baacf047SPaolo Bonzini } else if ((p = strstr(params, ",id=")) != NULL) { 840baacf047SPaolo Bonzini get_opt_value(value, sizeof(value), p+4); 841baacf047SPaolo Bonzini id = value; 842baacf047SPaolo Bonzini } 843cb77d192SMarkus Armbruster 844cb77d192SMarkus Armbruster /* 845cb77d192SMarkus Armbruster * This code doesn't work for defaults && !list->merge_lists: when 846cb77d192SMarkus Armbruster * params has no id=, and list has an element with !opts->id, it 847cb77d192SMarkus Armbruster * appends a new element instead of returning the existing opts. 848cb77d192SMarkus Armbruster * However, we got no use for this case. Guard against possible 849cb77d192SMarkus Armbruster * (if unlikely) future misuse: 850cb77d192SMarkus Armbruster */ 851cb77d192SMarkus Armbruster assert(!defaults || list->merge_lists); 8526d4cd408SMarkus Armbruster opts = qemu_opts_create(list, id, !defaults, &local_err); 853baacf047SPaolo Bonzini if (opts == NULL) { 85484d18f06SMarkus Armbruster if (local_err) { 855baacf047SPaolo Bonzini qerror_report_err(local_err); 856baacf047SPaolo Bonzini error_free(local_err); 857baacf047SPaolo Bonzini } 858baacf047SPaolo Bonzini return NULL; 859baacf047SPaolo Bonzini } 860baacf047SPaolo Bonzini 861baacf047SPaolo Bonzini if (opts_do_parse(opts, params, firstname, defaults) != 0) { 862baacf047SPaolo Bonzini qemu_opts_del(opts); 863baacf047SPaolo Bonzini return NULL; 864baacf047SPaolo Bonzini } 865baacf047SPaolo Bonzini 866baacf047SPaolo Bonzini return opts; 867baacf047SPaolo Bonzini } 868baacf047SPaolo Bonzini 869baacf047SPaolo Bonzini QemuOpts *qemu_opts_parse(QemuOptsList *list, const char *params, 870baacf047SPaolo Bonzini int permit_abbrev) 871baacf047SPaolo Bonzini { 872baacf047SPaolo Bonzini return opts_parse(list, params, permit_abbrev, false); 873baacf047SPaolo Bonzini } 874baacf047SPaolo Bonzini 875baacf047SPaolo Bonzini void qemu_opts_set_defaults(QemuOptsList *list, const char *params, 876baacf047SPaolo Bonzini int permit_abbrev) 877baacf047SPaolo Bonzini { 878baacf047SPaolo Bonzini QemuOpts *opts; 879baacf047SPaolo Bonzini 880baacf047SPaolo Bonzini opts = opts_parse(list, params, permit_abbrev, true); 881baacf047SPaolo Bonzini assert(opts); 882baacf047SPaolo Bonzini } 883baacf047SPaolo Bonzini 884baacf047SPaolo Bonzini typedef struct OptsFromQDictState { 885baacf047SPaolo Bonzini QemuOpts *opts; 886baacf047SPaolo Bonzini Error **errp; 887baacf047SPaolo Bonzini } OptsFromQDictState; 888baacf047SPaolo Bonzini 889baacf047SPaolo Bonzini static void qemu_opts_from_qdict_1(const char *key, QObject *obj, void *opaque) 890baacf047SPaolo Bonzini { 891baacf047SPaolo Bonzini OptsFromQDictState *state = opaque; 892baacf047SPaolo Bonzini char buf[32]; 893baacf047SPaolo Bonzini const char *value; 894baacf047SPaolo Bonzini int n; 895baacf047SPaolo Bonzini 8962767ceecSMarkus Armbruster if (!strcmp(key, "id") || *state->errp) { 897baacf047SPaolo Bonzini return; 898baacf047SPaolo Bonzini } 899baacf047SPaolo Bonzini 900baacf047SPaolo Bonzini switch (qobject_type(obj)) { 901baacf047SPaolo Bonzini case QTYPE_QSTRING: 902baacf047SPaolo Bonzini value = qstring_get_str(qobject_to_qstring(obj)); 903baacf047SPaolo Bonzini break; 904baacf047SPaolo Bonzini case QTYPE_QINT: 905baacf047SPaolo Bonzini n = snprintf(buf, sizeof(buf), "%" PRId64, 906baacf047SPaolo Bonzini qint_get_int(qobject_to_qint(obj))); 907baacf047SPaolo Bonzini assert(n < sizeof(buf)); 908baacf047SPaolo Bonzini value = buf; 909baacf047SPaolo Bonzini break; 910baacf047SPaolo Bonzini case QTYPE_QFLOAT: 911baacf047SPaolo Bonzini n = snprintf(buf, sizeof(buf), "%.17g", 912baacf047SPaolo Bonzini qfloat_get_double(qobject_to_qfloat(obj))); 913baacf047SPaolo Bonzini assert(n < sizeof(buf)); 914baacf047SPaolo Bonzini value = buf; 915baacf047SPaolo Bonzini break; 916baacf047SPaolo Bonzini case QTYPE_QBOOL: 917baacf047SPaolo Bonzini pstrcpy(buf, sizeof(buf), 918baacf047SPaolo Bonzini qbool_get_int(qobject_to_qbool(obj)) ? "on" : "off"); 919baacf047SPaolo Bonzini value = buf; 920baacf047SPaolo Bonzini break; 921baacf047SPaolo Bonzini default: 922baacf047SPaolo Bonzini return; 923baacf047SPaolo Bonzini } 924baacf047SPaolo Bonzini 925baacf047SPaolo Bonzini qemu_opt_set_err(state->opts, key, value, state->errp); 926baacf047SPaolo Bonzini } 927baacf047SPaolo Bonzini 928baacf047SPaolo Bonzini /* 929baacf047SPaolo Bonzini * Create QemuOpts from a QDict. 930baacf047SPaolo Bonzini * Use value of key "id" as ID if it exists and is a QString. 931baacf047SPaolo Bonzini * Only QStrings, QInts, QFloats and QBools are copied. Entries with 932baacf047SPaolo Bonzini * other types are silently ignored. 933baacf047SPaolo Bonzini */ 934baacf047SPaolo Bonzini QemuOpts *qemu_opts_from_qdict(QemuOptsList *list, const QDict *qdict, 935baacf047SPaolo Bonzini Error **errp) 936baacf047SPaolo Bonzini { 937baacf047SPaolo Bonzini OptsFromQDictState state; 938baacf047SPaolo Bonzini Error *local_err = NULL; 939baacf047SPaolo Bonzini QemuOpts *opts; 940baacf047SPaolo Bonzini 941baacf047SPaolo Bonzini opts = qemu_opts_create(list, qdict_get_try_str(qdict, "id"), 1, 942baacf047SPaolo Bonzini &local_err); 94384d18f06SMarkus Armbruster if (local_err) { 944baacf047SPaolo Bonzini error_propagate(errp, local_err); 945baacf047SPaolo Bonzini return NULL; 946baacf047SPaolo Bonzini } 947baacf047SPaolo Bonzini 948baacf047SPaolo Bonzini assert(opts != NULL); 949baacf047SPaolo Bonzini 950baacf047SPaolo Bonzini state.errp = &local_err; 951baacf047SPaolo Bonzini state.opts = opts; 952baacf047SPaolo Bonzini qdict_iter(qdict, qemu_opts_from_qdict_1, &state); 95384d18f06SMarkus Armbruster if (local_err) { 954baacf047SPaolo Bonzini error_propagate(errp, local_err); 955baacf047SPaolo Bonzini qemu_opts_del(opts); 956baacf047SPaolo Bonzini return NULL; 957baacf047SPaolo Bonzini } 958baacf047SPaolo Bonzini 959baacf047SPaolo Bonzini return opts; 960baacf047SPaolo Bonzini } 961baacf047SPaolo Bonzini 962baacf047SPaolo Bonzini /* 963376609ccSKevin Wolf * Adds all QDict entries to the QemuOpts that can be added and removes them 964376609ccSKevin Wolf * from the QDict. When this function returns, the QDict contains only those 965376609ccSKevin Wolf * entries that couldn't be added to the QemuOpts. 966376609ccSKevin Wolf */ 967376609ccSKevin Wolf void qemu_opts_absorb_qdict(QemuOpts *opts, QDict *qdict, Error **errp) 968376609ccSKevin Wolf { 969376609ccSKevin Wolf const QDictEntry *entry, *next; 970376609ccSKevin Wolf 971376609ccSKevin Wolf entry = qdict_first(qdict); 972376609ccSKevin Wolf 973376609ccSKevin Wolf while (entry != NULL) { 974376609ccSKevin Wolf Error *local_err = NULL; 975376609ccSKevin Wolf OptsFromQDictState state = { 976376609ccSKevin Wolf .errp = &local_err, 977376609ccSKevin Wolf .opts = opts, 978376609ccSKevin Wolf }; 979376609ccSKevin Wolf 980376609ccSKevin Wolf next = qdict_next(qdict, entry); 981376609ccSKevin Wolf 982376609ccSKevin Wolf if (find_desc_by_name(opts->list->desc, entry->key)) { 983376609ccSKevin Wolf qemu_opts_from_qdict_1(entry->key, entry->value, &state); 98484d18f06SMarkus Armbruster if (local_err) { 985376609ccSKevin Wolf error_propagate(errp, local_err); 986376609ccSKevin Wolf return; 987376609ccSKevin Wolf } else { 988376609ccSKevin Wolf qdict_del(qdict, entry->key); 989376609ccSKevin Wolf } 990376609ccSKevin Wolf } 991376609ccSKevin Wolf 992376609ccSKevin Wolf entry = next; 993376609ccSKevin Wolf } 994376609ccSKevin Wolf } 995376609ccSKevin Wolf 996376609ccSKevin Wolf /* 997baacf047SPaolo Bonzini * Convert from QemuOpts to QDict. 998baacf047SPaolo Bonzini * The QDict values are of type QString. 999baacf047SPaolo Bonzini * TODO We'll want to use types appropriate for opt->desc->type, but 1000baacf047SPaolo Bonzini * this is enough for now. 1001baacf047SPaolo Bonzini */ 1002baacf047SPaolo Bonzini QDict *qemu_opts_to_qdict(QemuOpts *opts, QDict *qdict) 1003baacf047SPaolo Bonzini { 1004baacf047SPaolo Bonzini QemuOpt *opt; 1005baacf047SPaolo Bonzini QObject *val; 1006baacf047SPaolo Bonzini 1007baacf047SPaolo Bonzini if (!qdict) { 1008baacf047SPaolo Bonzini qdict = qdict_new(); 1009baacf047SPaolo Bonzini } 1010baacf047SPaolo Bonzini if (opts->id) { 1011baacf047SPaolo Bonzini qdict_put(qdict, "id", qstring_from_str(opts->id)); 1012baacf047SPaolo Bonzini } 1013baacf047SPaolo Bonzini QTAILQ_FOREACH(opt, &opts->head, next) { 1014baacf047SPaolo Bonzini val = QOBJECT(qstring_from_str(opt->str)); 1015baacf047SPaolo Bonzini qdict_put_obj(qdict, opt->name, val); 1016baacf047SPaolo Bonzini } 1017baacf047SPaolo Bonzini return qdict; 1018baacf047SPaolo Bonzini } 1019baacf047SPaolo Bonzini 1020baacf047SPaolo Bonzini /* Validate parsed opts against descriptions where no 1021baacf047SPaolo Bonzini * descriptions were provided in the QemuOptsList. 1022baacf047SPaolo Bonzini */ 1023baacf047SPaolo Bonzini void qemu_opts_validate(QemuOpts *opts, const QemuOptDesc *desc, Error **errp) 1024baacf047SPaolo Bonzini { 1025baacf047SPaolo Bonzini QemuOpt *opt; 1026baacf047SPaolo Bonzini Error *local_err = NULL; 1027baacf047SPaolo Bonzini 1028baacf047SPaolo Bonzini assert(opts_accepts_any(opts)); 1029baacf047SPaolo Bonzini 1030baacf047SPaolo Bonzini QTAILQ_FOREACH(opt, &opts->head, next) { 1031baacf047SPaolo Bonzini opt->desc = find_desc_by_name(desc, opt->name); 1032baacf047SPaolo Bonzini if (!opt->desc) { 1033baacf047SPaolo Bonzini error_set(errp, QERR_INVALID_PARAMETER, opt->name); 1034baacf047SPaolo Bonzini return; 1035baacf047SPaolo Bonzini } 1036baacf047SPaolo Bonzini 1037baacf047SPaolo Bonzini qemu_opt_parse(opt, &local_err); 103884d18f06SMarkus Armbruster if (local_err) { 1039baacf047SPaolo Bonzini error_propagate(errp, local_err); 1040baacf047SPaolo Bonzini return; 1041baacf047SPaolo Bonzini } 1042baacf047SPaolo Bonzini } 1043baacf047SPaolo Bonzini } 1044baacf047SPaolo Bonzini 1045baacf047SPaolo Bonzini int qemu_opts_foreach(QemuOptsList *list, qemu_opts_loopfunc func, void *opaque, 1046baacf047SPaolo Bonzini int abort_on_failure) 1047baacf047SPaolo Bonzini { 1048baacf047SPaolo Bonzini Location loc; 1049baacf047SPaolo Bonzini QemuOpts *opts; 1050baacf047SPaolo Bonzini int rc = 0; 1051baacf047SPaolo Bonzini 1052baacf047SPaolo Bonzini loc_push_none(&loc); 1053baacf047SPaolo Bonzini QTAILQ_FOREACH(opts, &list->head, next) { 1054baacf047SPaolo Bonzini loc_restore(&opts->loc); 1055baacf047SPaolo Bonzini rc |= func(opts, opaque); 1056baacf047SPaolo Bonzini if (abort_on_failure && rc != 0) 1057baacf047SPaolo Bonzini break; 1058baacf047SPaolo Bonzini } 1059baacf047SPaolo Bonzini loc_pop(&loc); 1060baacf047SPaolo Bonzini return rc; 1061baacf047SPaolo Bonzini } 10628559e45eSChunyan Liu 10638559e45eSChunyan Liu static size_t count_opts_list(QemuOptsList *list) 10648559e45eSChunyan Liu { 10658559e45eSChunyan Liu QemuOptDesc *desc = NULL; 10668559e45eSChunyan Liu size_t num_opts = 0; 10678559e45eSChunyan Liu 10688559e45eSChunyan Liu if (!list) { 10698559e45eSChunyan Liu return 0; 10708559e45eSChunyan Liu } 10718559e45eSChunyan Liu 10728559e45eSChunyan Liu desc = list->desc; 10738559e45eSChunyan Liu while (desc && desc->name) { 10748559e45eSChunyan Liu num_opts++; 10758559e45eSChunyan Liu desc++; 10768559e45eSChunyan Liu } 10778559e45eSChunyan Liu 10788559e45eSChunyan Liu return num_opts; 10798559e45eSChunyan Liu } 10808559e45eSChunyan Liu 10818559e45eSChunyan Liu void qemu_opts_free(QemuOptsList *list) 10828559e45eSChunyan Liu { 10838559e45eSChunyan Liu g_free(list); 10848559e45eSChunyan Liu } 1085a1097a26SChunyan Liu 1086c282e1fdSChunyan Liu /* Realloc dst option list and append options from an option list (list) 1087c282e1fdSChunyan Liu * to it. dst could be NULL or a malloced list. 108898d896d9SChunyan Liu * The lifetime of dst must be shorter than the input list because the 108998d896d9SChunyan Liu * QemuOptDesc->name, ->help, and ->def_value_str strings are shared. 1090a1097a26SChunyan Liu */ 1091a1097a26SChunyan Liu QemuOptsList *qemu_opts_append(QemuOptsList *dst, 1092c282e1fdSChunyan Liu QemuOptsList *list) 1093a1097a26SChunyan Liu { 1094a1097a26SChunyan Liu size_t num_opts, num_dst_opts; 1095a1097a26SChunyan Liu QemuOptDesc *desc; 1096a1097a26SChunyan Liu bool need_init = false; 1097a7607150SMichal Privoznik bool need_head_update; 1098a1097a26SChunyan Liu 1099c282e1fdSChunyan Liu if (!list) { 1100a1097a26SChunyan Liu return dst; 1101a1097a26SChunyan Liu } 1102a1097a26SChunyan Liu 1103a1097a26SChunyan Liu /* If dst is NULL, after realloc, some area of dst should be initialized 1104a1097a26SChunyan Liu * before adding options to it. 1105a1097a26SChunyan Liu */ 1106a1097a26SChunyan Liu if (!dst) { 1107a1097a26SChunyan Liu need_init = true; 1108a7607150SMichal Privoznik need_head_update = true; 1109a7607150SMichal Privoznik } else { 1110a7607150SMichal Privoznik /* Moreover, even if dst is not NULL, the realloc may move it to a 1111a7607150SMichal Privoznik * different address in which case we may get a stale tail pointer 1112a7607150SMichal Privoznik * in dst->head. */ 1113a7607150SMichal Privoznik need_head_update = QTAILQ_EMPTY(&dst->head); 1114a1097a26SChunyan Liu } 1115a1097a26SChunyan Liu 1116a1097a26SChunyan Liu num_opts = count_opts_list(dst); 1117a1097a26SChunyan Liu num_dst_opts = num_opts; 1118a1097a26SChunyan Liu num_opts += count_opts_list(list); 1119a1097a26SChunyan Liu dst = g_realloc(dst, sizeof(QemuOptsList) + 1120a1097a26SChunyan Liu (num_opts + 1) * sizeof(QemuOptDesc)); 1121a1097a26SChunyan Liu if (need_init) { 1122a1097a26SChunyan Liu dst->name = NULL; 1123a1097a26SChunyan Liu dst->implied_opt_name = NULL; 1124a1097a26SChunyan Liu dst->merge_lists = false; 1125a1097a26SChunyan Liu } 1126a7607150SMichal Privoznik if (need_head_update) { 1127a7607150SMichal Privoznik QTAILQ_INIT(&dst->head); 1128a7607150SMichal Privoznik } 1129a1097a26SChunyan Liu dst->desc[num_dst_opts].name = NULL; 1130a1097a26SChunyan Liu 1131a1097a26SChunyan Liu /* append list->desc to dst->desc */ 1132a1097a26SChunyan Liu if (list) { 1133a1097a26SChunyan Liu desc = list->desc; 1134a1097a26SChunyan Liu while (desc && desc->name) { 1135a1097a26SChunyan Liu if (find_desc_by_name(dst->desc, desc->name) == NULL) { 113698d896d9SChunyan Liu dst->desc[num_dst_opts++] = *desc; 1137a1097a26SChunyan Liu dst->desc[num_dst_opts].name = NULL; 1138a1097a26SChunyan Liu } 1139a1097a26SChunyan Liu desc++; 1140a1097a26SChunyan Liu } 1141a1097a26SChunyan Liu } 1142a1097a26SChunyan Liu 1143a1097a26SChunyan Liu return dst; 1144a1097a26SChunyan Liu } 1145