diff options
Diffstat (limited to 'qemu/util/qemu-option.c')
| -rw-r--r-- | qemu/util/qemu-option.c | 1207 |
1 files changed, 0 insertions, 1207 deletions
diff --git a/qemu/util/qemu-option.c b/qemu/util/qemu-option.c deleted file mode 100644 index 3467dc239..000000000 --- a/qemu/util/qemu-option.c +++ /dev/null @@ -1,1207 +0,0 @@ -/* - * Commandline option parsing functions - * - * Copyright (c) 2003-2008 Fabrice Bellard - * Copyright (c) 2009 Kevin Wolf <kwolf@redhat.com> - * - * Permission is hereby granted, free of charge, to any person obtaining a copy - * of this software and associated documentation files (the "Software"), to deal - * in the Software without restriction, including without limitation the rights - * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell - * copies of the Software, and to permit persons to whom the Software is - * furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included in - * all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL - * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, - * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN - * THE SOFTWARE. - */ - -#include "qemu/osdep.h" - -#include "qapi/error.h" -#include "qemu-common.h" -#include "qemu/error-report.h" -#include "qapi/qmp/types.h" -#include "qapi/qmp/qerror.h" -#include "qemu/option_int.h" -#include "qemu/cutils.h" -#include "qemu/id.h" -#include "qemu/help_option.h" - -/* - * Extracts the name of an option from the parameter string (p points at the - * first byte of the option name) - * - * The option name is delimited by delim (usually , or =) or the string end - * and is copied into buf. If the option name is longer than buf_size, it is - * truncated. buf is always zero terminated. - * - * The return value is the position of the delimiter/zero byte after the option - * name in p. - */ -const char *get_opt_name(char *buf, int buf_size, const char *p, char delim) -{ - char *q; - - q = buf; - while (*p != '\0' && *p != delim) { - if (q && (q - buf) < buf_size - 1) - *q++ = *p; - p++; - } - if (q) - *q = '\0'; - - return p; -} - -/* - * Extracts the value of an option from the parameter string p (p points at the - * first byte of the option value) - * - * This function is comparable to get_opt_name with the difference that the - * delimiter is fixed to be comma which starts a new option. To specify an - * option value that contains commas, double each comma. - */ -const char *get_opt_value(char *buf, int buf_size, const char *p) -{ - char *q; - - q = buf; - while (*p != '\0') { - if (*p == ',') { - if (*(p + 1) != ',') - break; - p++; - } - if (q && (q - buf) < buf_size - 1) - *q++ = *p; - p++; - } - if (q) - *q = '\0'; - - return p; -} - -int get_next_param_value(char *buf, int buf_size, - const char *tag, const char **pstr) -{ - const char *p; - char option[128]; - - p = *pstr; - for(;;) { - p = get_opt_name(option, sizeof(option), p, '='); - if (*p != '=') - break; - p++; - if (!strcmp(tag, option)) { - *pstr = get_opt_value(buf, buf_size, p); - if (**pstr == ',') { - (*pstr)++; - } - return strlen(buf); - } else { - p = get_opt_value(NULL, 0, p); - } - if (*p != ',') - break; - p++; - } - return 0; -} - -int get_param_value(char *buf, int buf_size, - const char *tag, const char *str) -{ - return get_next_param_value(buf, buf_size, tag, &str); -} - -static void parse_option_bool(const char *name, const char *value, bool *ret, - Error **errp) -{ - if (value != NULL) { - if (!strcmp(value, "on")) { - *ret = 1; - } else if (!strcmp(value, "off")) { - *ret = 0; - } else { - error_setg(errp, QERR_INVALID_PARAMETER_VALUE, - name, "'on' or 'off'"); - } - } else { - *ret = 1; - } -} - -static void parse_option_number(const char *name, const char *value, - uint64_t *ret, Error **errp) -{ - char *postfix; - uint64_t number; - - if (value != NULL) { - number = strtoull(value, &postfix, 0); - if (*postfix != '\0') { - error_setg(errp, QERR_INVALID_PARAMETER_VALUE, name, "a number"); - return; - } - *ret = number; - } else { - error_setg(errp, QERR_INVALID_PARAMETER_VALUE, name, "a number"); - } -} - -static const QemuOptDesc *find_desc_by_name(const QemuOptDesc *desc, - const char *name) -{ - int i; - - for (i = 0; desc[i].name != NULL; i++) { - if (strcmp(desc[i].name, name) == 0) { - return &desc[i]; - } - } - - return NULL; -} - -void parse_option_size(const char *name, const char *value, - uint64_t *ret, Error **errp) -{ - char *postfix; - double sizef; - - if (value != NULL) { - sizef = strtod(value, &postfix); - if (sizef < 0 || sizef > UINT64_MAX) { - error_setg(errp, QERR_INVALID_PARAMETER_VALUE, name, - "a non-negative number below 2^64"); - return; - } - switch (*postfix) { - case 'T': - sizef *= 1024; - /* fall through */ - case 'G': - sizef *= 1024; - /* fall through */ - case 'M': - sizef *= 1024; - /* fall through */ - case 'K': - case 'k': - sizef *= 1024; - /* fall through */ - case 'b': - case '\0': - *ret = (uint64_t) sizef; - break; - default: - error_setg(errp, QERR_INVALID_PARAMETER_VALUE, name, "a size"); - error_append_hint(errp, "You may use k, M, G or T suffixes for " - "kilobytes, megabytes, gigabytes and terabytes.\n"); - return; - } - } else { - error_setg(errp, QERR_INVALID_PARAMETER_VALUE, name, "a size"); - } -} - -bool has_help_option(const char *param) -{ - size_t buflen = strlen(param) + 1; - char *buf = g_malloc(buflen); - const char *p = param; - bool result = false; - - while (*p) { - p = get_opt_value(buf, buflen, p); - if (*p) { - p++; - } - - if (is_help_option(buf)) { - result = true; - goto out; - } - } - -out: - g_free(buf); - return result; -} - -bool is_valid_option_list(const char *param) -{ - size_t buflen = strlen(param) + 1; - char *buf = g_malloc(buflen); - const char *p = param; - bool result = true; - - while (*p) { - p = get_opt_value(buf, buflen, p); - if (*p && !*++p) { - result = false; - goto out; - } - - if (!*buf || *buf == ',') { - result = false; - goto out; - } - } - -out: - g_free(buf); - return result; -} - -void qemu_opts_print_help(QemuOptsList *list) -{ - QemuOptDesc *desc; - - assert(list); - desc = list->desc; - printf("Supported options:\n"); - while (desc && desc->name) { - printf("%-16s %s\n", desc->name, - desc->help ? desc->help : "No description available"); - desc++; - } -} -/* ------------------------------------------------------------------ */ - -QemuOpt *qemu_opt_find(QemuOpts *opts, const char *name) -{ - QemuOpt *opt; - - QTAILQ_FOREACH_REVERSE(opt, &opts->head, QemuOptHead, next) { - if (strcmp(opt->name, name) != 0) - continue; - return opt; - } - return NULL; -} - -static void qemu_opt_del(QemuOpt *opt) -{ - QTAILQ_REMOVE(&opt->opts->head, opt, next); - g_free(opt->name); - g_free(opt->str); - g_free(opt); -} - -/* qemu_opt_set allows many settings for the same option. - * This function deletes all settings for an option. - */ -static void qemu_opt_del_all(QemuOpts *opts, const char *name) -{ - QemuOpt *opt, *next_opt; - - QTAILQ_FOREACH_SAFE(opt, &opts->head, next, next_opt) { - if (!strcmp(opt->name, name)) { - qemu_opt_del(opt); - } - } -} - -const char *qemu_opt_get(QemuOpts *opts, const char *name) -{ - QemuOpt *opt; - - if (opts == NULL) { - return NULL; - } - - opt = qemu_opt_find(opts, name); - if (!opt) { - const QemuOptDesc *desc = find_desc_by_name(opts->list->desc, name); - if (desc && desc->def_value_str) { - return desc->def_value_str; - } - } - return opt ? opt->str : NULL; -} - -/* Get a known option (or its default) and remove it from the list - * all in one action. Return a malloced string of the option value. - * Result must be freed by caller with g_free(). - */ -char *qemu_opt_get_del(QemuOpts *opts, const char *name) -{ - QemuOpt *opt; - const QemuOptDesc *desc; - char *str = NULL; - - if (opts == NULL) { - return NULL; - } - - opt = qemu_opt_find(opts, name); - if (!opt) { - desc = find_desc_by_name(opts->list->desc, name); - if (desc && desc->def_value_str) { - str = g_strdup(desc->def_value_str); - } - return str; - } - str = opt->str; - opt->str = NULL; - qemu_opt_del_all(opts, name); - return str; -} - -bool qemu_opt_has_help_opt(QemuOpts *opts) -{ - QemuOpt *opt; - - QTAILQ_FOREACH_REVERSE(opt, &opts->head, QemuOptHead, next) { - if (is_help_option(opt->name)) { - return true; - } - } - return false; -} - -static bool qemu_opt_get_bool_helper(QemuOpts *opts, const char *name, - bool defval, bool del) -{ - QemuOpt *opt; - bool ret = defval; - - if (opts == NULL) { - return ret; - } - - opt = qemu_opt_find(opts, name); - if (opt == NULL) { - const QemuOptDesc *desc = find_desc_by_name(opts->list->desc, name); - if (desc && desc->def_value_str) { - parse_option_bool(name, desc->def_value_str, &ret, &error_abort); - } - return ret; - } - assert(opt->desc && opt->desc->type == QEMU_OPT_BOOL); - ret = opt->value.boolean; - if (del) { - qemu_opt_del_all(opts, name); - } - return ret; -} - -bool qemu_opt_get_bool(QemuOpts *opts, const char *name, bool defval) -{ - return qemu_opt_get_bool_helper(opts, name, defval, false); -} - -bool qemu_opt_get_bool_del(QemuOpts *opts, const char *name, bool defval) -{ - return qemu_opt_get_bool_helper(opts, name, defval, true); -} - -static uint64_t qemu_opt_get_number_helper(QemuOpts *opts, const char *name, - uint64_t defval, bool del) -{ - QemuOpt *opt; - uint64_t ret = defval; - - if (opts == NULL) { - return ret; - } - - opt = qemu_opt_find(opts, name); - if (opt == NULL) { - const QemuOptDesc *desc = find_desc_by_name(opts->list->desc, name); - if (desc && desc->def_value_str) { - parse_option_number(name, desc->def_value_str, &ret, &error_abort); - } - return ret; - } - assert(opt->desc && opt->desc->type == QEMU_OPT_NUMBER); - ret = opt->value.uint; - if (del) { - qemu_opt_del_all(opts, name); - } - return ret; -} - -uint64_t qemu_opt_get_number(QemuOpts *opts, const char *name, uint64_t defval) -{ - return qemu_opt_get_number_helper(opts, name, defval, false); -} - -uint64_t qemu_opt_get_number_del(QemuOpts *opts, const char *name, - uint64_t defval) -{ - return qemu_opt_get_number_helper(opts, name, defval, true); -} - -static uint64_t qemu_opt_get_size_helper(QemuOpts *opts, const char *name, - uint64_t defval, bool del) -{ - QemuOpt *opt; - uint64_t ret = defval; - - if (opts == NULL) { - return ret; - } - - opt = qemu_opt_find(opts, name); - if (opt == NULL) { - const QemuOptDesc *desc = find_desc_by_name(opts->list->desc, name); - if (desc && desc->def_value_str) { - parse_option_size(name, desc->def_value_str, &ret, &error_abort); - } - return ret; - } - assert(opt->desc && opt->desc->type == QEMU_OPT_SIZE); - ret = opt->value.uint; - if (del) { - qemu_opt_del_all(opts, name); - } - return ret; -} - -uint64_t qemu_opt_get_size(QemuOpts *opts, const char *name, uint64_t defval) -{ - return qemu_opt_get_size_helper(opts, name, defval, false); -} - -uint64_t qemu_opt_get_size_del(QemuOpts *opts, const char *name, - uint64_t defval) -{ - return qemu_opt_get_size_helper(opts, name, defval, true); -} - -static void qemu_opt_parse(QemuOpt *opt, Error **errp) -{ - if (opt->desc == NULL) - return; - - switch (opt->desc->type) { - case QEMU_OPT_STRING: - /* nothing */ - return; - case QEMU_OPT_BOOL: - parse_option_bool(opt->name, opt->str, &opt->value.boolean, errp); - break; - case QEMU_OPT_NUMBER: - parse_option_number(opt->name, opt->str, &opt->value.uint, errp); - break; - case QEMU_OPT_SIZE: - parse_option_size(opt->name, opt->str, &opt->value.uint, errp); - break; - default: - abort(); - } -} - -static bool opts_accepts_any(const QemuOpts *opts) -{ - return opts->list->desc[0].name == NULL; -} - -int qemu_opt_unset(QemuOpts *opts, const char *name) -{ - QemuOpt *opt = qemu_opt_find(opts, name); - - assert(opts_accepts_any(opts)); - - if (opt == NULL) { - return -1; - } else { - qemu_opt_del(opt); - return 0; - } -} - -static void opt_set(QemuOpts *opts, const char *name, const char *value, - bool prepend, Error **errp) -{ - QemuOpt *opt; - const QemuOptDesc *desc; - Error *local_err = NULL; - - desc = find_desc_by_name(opts->list->desc, name); - if (!desc && !opts_accepts_any(opts)) { - error_setg(errp, QERR_INVALID_PARAMETER, name); - return; - } - - opt = g_malloc0(sizeof(*opt)); - opt->name = g_strdup(name); - opt->opts = opts; - if (prepend) { - QTAILQ_INSERT_HEAD(&opts->head, opt, next); - } else { - QTAILQ_INSERT_TAIL(&opts->head, opt, next); - } - opt->desc = desc; - opt->str = g_strdup(value); - qemu_opt_parse(opt, &local_err); - if (local_err) { - error_propagate(errp, local_err); - qemu_opt_del(opt); - } -} - -void qemu_opt_set(QemuOpts *opts, const char *name, const char *value, - Error **errp) -{ - opt_set(opts, name, value, false, errp); -} - -void qemu_opt_set_bool(QemuOpts *opts, const char *name, bool val, - Error **errp) -{ - QemuOpt *opt; - const QemuOptDesc *desc = opts->list->desc; - - opt = g_malloc0(sizeof(*opt)); - opt->desc = find_desc_by_name(desc, name); - if (!opt->desc && !opts_accepts_any(opts)) { - error_setg(errp, QERR_INVALID_PARAMETER, name); - g_free(opt); - return; - } - - opt->name = g_strdup(name); - opt->opts = opts; - opt->value.boolean = !!val; - opt->str = g_strdup(val ? "on" : "off"); - QTAILQ_INSERT_TAIL(&opts->head, opt, next); -} - -void qemu_opt_set_number(QemuOpts *opts, const char *name, int64_t val, - Error **errp) -{ - QemuOpt *opt; - const QemuOptDesc *desc = opts->list->desc; - - opt = g_malloc0(sizeof(*opt)); - opt->desc = find_desc_by_name(desc, name); - if (!opt->desc && !opts_accepts_any(opts)) { - error_setg(errp, QERR_INVALID_PARAMETER, name); - g_free(opt); - return; - } - - opt->name = g_strdup(name); - opt->opts = opts; - opt->value.uint = val; - opt->str = g_strdup_printf("%" PRId64, val); - QTAILQ_INSERT_TAIL(&opts->head, opt, next); -} - -/** - * For each member of @opts, call @func(@opaque, name, value, @errp). - * @func() may store an Error through @errp, but must return non-zero then. - * When @func() returns non-zero, break the loop and return that value. - * Return zero when the loop completes. - */ -int qemu_opt_foreach(QemuOpts *opts, qemu_opt_loopfunc func, void *opaque, - Error **errp) -{ - QemuOpt *opt; - int rc; - - QTAILQ_FOREACH(opt, &opts->head, next) { - rc = func(opaque, opt->name, opt->str, errp); - if (rc) { - return rc; - } - assert(!errp || !*errp); - } - return 0; -} - -QemuOpts *qemu_opts_find(QemuOptsList *list, const char *id) -{ - QemuOpts *opts; - - QTAILQ_FOREACH(opts, &list->head, next) { - if (!opts->id && !id) { - return opts; - } - if (opts->id && id && !strcmp(opts->id, id)) { - return opts; - } - } - return NULL; -} - -QemuOpts *qemu_opts_create(QemuOptsList *list, const char *id, - int fail_if_exists, Error **errp) -{ - QemuOpts *opts = NULL; - - if (id) { - if (!id_wellformed(id)) { - error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "id", - "an identifier"); - error_append_hint(errp, "Identifiers consist of letters, digits, " - "'-', '.', '_', starting with a letter.\n"); - return NULL; - } - opts = qemu_opts_find(list, id); - if (opts != NULL) { - if (fail_if_exists && !list->merge_lists) { - error_setg(errp, "Duplicate ID '%s' for %s", id, list->name); - return NULL; - } else { - return opts; - } - } - } else if (list->merge_lists) { - opts = qemu_opts_find(list, NULL); - if (opts) { - return opts; - } - } - opts = g_malloc0(sizeof(*opts)); - opts->id = g_strdup(id); - opts->list = list; - loc_save(&opts->loc); - QTAILQ_INIT(&opts->head); - QTAILQ_INSERT_TAIL(&list->head, opts, next); - return opts; -} - -void qemu_opts_reset(QemuOptsList *list) -{ - QemuOpts *opts, *next_opts; - - QTAILQ_FOREACH_SAFE(opts, &list->head, next, next_opts) { - qemu_opts_del(opts); - } -} - -void qemu_opts_loc_restore(QemuOpts *opts) -{ - loc_restore(&opts->loc); -} - -void qemu_opts_set(QemuOptsList *list, const char *id, - const char *name, const char *value, Error **errp) -{ - QemuOpts *opts; - Error *local_err = NULL; - - opts = qemu_opts_create(list, id, 1, &local_err); - if (local_err) { - error_propagate(errp, local_err); - return; - } - qemu_opt_set(opts, name, value, errp); -} - -const char *qemu_opts_id(QemuOpts *opts) -{ - return opts->id; -} - -/* The id string will be g_free()d by qemu_opts_del */ -void qemu_opts_set_id(QemuOpts *opts, char *id) -{ - opts->id = id; -} - -void qemu_opts_del(QemuOpts *opts) -{ - QemuOpt *opt; - - if (opts == NULL) { - return; - } - - for (;;) { - opt = QTAILQ_FIRST(&opts->head); - if (opt == NULL) - break; - qemu_opt_del(opt); - } - QTAILQ_REMOVE(&opts->list->head, opts, next); - g_free(opts->id); - g_free(opts); -} - -/* print value, escaping any commas in value */ -static void escaped_print(const char *value) -{ - const char *ptr; - - for (ptr = value; *ptr; ++ptr) { - if (*ptr == ',') { - putchar(','); - } - putchar(*ptr); - } -} - -void qemu_opts_print(QemuOpts *opts, const char *separator) -{ - QemuOpt *opt; - QemuOptDesc *desc = opts->list->desc; - const char *sep = ""; - - if (opts->id) { - printf("id=%s", opts->id); /* passed id_wellformed -> no commas */ - sep = separator; - } - - if (desc[0].name == NULL) { - QTAILQ_FOREACH(opt, &opts->head, next) { - printf("%s%s=", sep, opt->name); - escaped_print(opt->str); - sep = separator; - } - return; - } - for (; desc && desc->name; desc++) { - const char *value; - QemuOpt *opt = qemu_opt_find(opts, desc->name); - - value = opt ? opt->str : desc->def_value_str; - if (!value) { - continue; - } - if (desc->type == QEMU_OPT_STRING) { - printf("%s%s=", sep, desc->name); - escaped_print(value); - } else if ((desc->type == QEMU_OPT_SIZE || - desc->type == QEMU_OPT_NUMBER) && opt) { - printf("%s%s=%" PRId64, sep, desc->name, opt->value.uint); - } else { - printf("%s%s=%s", sep, desc->name, value); - } - sep = separator; - } -} - -static void opts_do_parse(QemuOpts *opts, const char *params, - const char *firstname, bool prepend, Error **errp) -{ - char option[128], value[1024]; - const char *p,*pe,*pc; - Error *local_err = NULL; - - for (p = params; *p != '\0'; p++) { - pe = strchr(p, '='); - pc = strchr(p, ','); - if (!pe || (pc && pc < pe)) { - /* found "foo,more" */ - if (p == params && firstname) { - /* implicitly named first option */ - pstrcpy(option, sizeof(option), firstname); - p = get_opt_value(value, sizeof(value), p); - } else { - /* option without value, probably a flag */ - p = get_opt_name(option, sizeof(option), p, ','); - if (strncmp(option, "no", 2) == 0) { - memmove(option, option+2, strlen(option+2)+1); - pstrcpy(value, sizeof(value), "off"); - } else { - pstrcpy(value, sizeof(value), "on"); - } - } - } else { - /* found "foo=bar,more" */ - p = get_opt_name(option, sizeof(option), p, '='); - if (*p != '=') { - break; - } - p++; - p = get_opt_value(value, sizeof(value), p); - } - if (strcmp(option, "id") != 0) { - /* store and parse */ - opt_set(opts, option, value, prepend, &local_err); - if (local_err) { - error_propagate(errp, local_err); - return; - } - } - if (*p != ',') { - break; - } - } -} - -/** - * Store options parsed from @params into @opts. - * If @firstname is non-null, the first key=value in @params may omit - * key=, and is treated as if key was @firstname. - * On error, store an error object through @errp if non-null. - */ -void qemu_opts_do_parse(QemuOpts *opts, const char *params, - const char *firstname, Error **errp) -{ - opts_do_parse(opts, params, firstname, false, errp); -} - -static QemuOpts *opts_parse(QemuOptsList *list, const char *params, - bool permit_abbrev, bool defaults, Error **errp) -{ - const char *firstname; - char value[1024], *id = NULL; - const char *p; - QemuOpts *opts; - Error *local_err = NULL; - - assert(!permit_abbrev || list->implied_opt_name); - firstname = permit_abbrev ? list->implied_opt_name : NULL; - - if (strncmp(params, "id=", 3) == 0) { - get_opt_value(value, sizeof(value), params+3); - id = value; - } else if ((p = strstr(params, ",id=")) != NULL) { - get_opt_value(value, sizeof(value), p+4); - id = value; - } - - /* - * This code doesn't work for defaults && !list->merge_lists: when - * params has no id=, and list has an element with !opts->id, it - * appends a new element instead of returning the existing opts. - * However, we got no use for this case. Guard against possible - * (if unlikely) future misuse: - */ - assert(!defaults || list->merge_lists); - opts = qemu_opts_create(list, id, !defaults, &local_err); - if (opts == NULL) { - error_propagate(errp, local_err); - return NULL; - } - - opts_do_parse(opts, params, firstname, defaults, &local_err); - if (local_err) { - error_propagate(errp, local_err); - qemu_opts_del(opts); - return NULL; - } - - return opts; -} - -/** - * Create a QemuOpts in @list and with options parsed from @params. - * If @permit_abbrev, the first key=value in @params may omit key=, - * and is treated as if key was @list->implied_opt_name. - * On error, store an error object through @errp if non-null. - * Return the new QemuOpts on success, null pointer on error. - */ -QemuOpts *qemu_opts_parse(QemuOptsList *list, const char *params, - bool permit_abbrev, Error **errp) -{ - return opts_parse(list, params, permit_abbrev, false, errp); -} - -/** - * Create a QemuOpts in @list and with options parsed from @params. - * If @permit_abbrev, the first key=value in @params may omit key=, - * and is treated as if key was @list->implied_opt_name. - * Report errors with error_report_err(). This is inappropriate in - * QMP context. Do not use this function there! - * Return the new QemuOpts on success, null pointer on error. - */ -QemuOpts *qemu_opts_parse_noisily(QemuOptsList *list, const char *params, - bool permit_abbrev) -{ - Error *err = NULL; - QemuOpts *opts; - - opts = opts_parse(list, params, permit_abbrev, false, &err); - if (err) { - error_report_err(err); - } - return opts; -} - -void qemu_opts_set_defaults(QemuOptsList *list, const char *params, - int permit_abbrev) -{ - QemuOpts *opts; - - opts = opts_parse(list, params, permit_abbrev, true, NULL); - assert(opts); -} - -typedef struct OptsFromQDictState { - QemuOpts *opts; - Error **errp; -} OptsFromQDictState; - -static void qemu_opts_from_qdict_1(const char *key, QObject *obj, void *opaque) -{ - OptsFromQDictState *state = opaque; - char buf[32]; - const char *value; - int n; - - if (!strcmp(key, "id") || *state->errp) { - return; - } - - switch (qobject_type(obj)) { - case QTYPE_QSTRING: - value = qstring_get_str(qobject_to_qstring(obj)); - break; - case QTYPE_QINT: - n = snprintf(buf, sizeof(buf), "%" PRId64, - qint_get_int(qobject_to_qint(obj))); - assert(n < sizeof(buf)); - value = buf; - break; - case QTYPE_QFLOAT: - n = snprintf(buf, sizeof(buf), "%.17g", - qfloat_get_double(qobject_to_qfloat(obj))); - assert(n < sizeof(buf)); - value = buf; - break; - case QTYPE_QBOOL: - pstrcpy(buf, sizeof(buf), - qbool_get_bool(qobject_to_qbool(obj)) ? "on" : "off"); - value = buf; - break; - default: - return; - } - - qemu_opt_set(state->opts, key, value, state->errp); -} - -/* - * Create QemuOpts from a QDict. - * Use value of key "id" as ID if it exists and is a QString. - * Only QStrings, QInts, QFloats and QBools are copied. Entries with - * other types are silently ignored. - */ -QemuOpts *qemu_opts_from_qdict(QemuOptsList *list, const QDict *qdict, - Error **errp) -{ - OptsFromQDictState state; - Error *local_err = NULL; - QemuOpts *opts; - - opts = qemu_opts_create(list, qdict_get_try_str(qdict, "id"), 1, - &local_err); - if (local_err) { - error_propagate(errp, local_err); - return NULL; - } - - assert(opts != NULL); - - state.errp = &local_err; - state.opts = opts; - qdict_iter(qdict, qemu_opts_from_qdict_1, &state); - if (local_err) { - error_propagate(errp, local_err); - qemu_opts_del(opts); - return NULL; - } - - return opts; -} - -/* - * Adds all QDict entries to the QemuOpts that can be added and removes them - * from the QDict. When this function returns, the QDict contains only those - * entries that couldn't be added to the QemuOpts. - */ -void qemu_opts_absorb_qdict(QemuOpts *opts, QDict *qdict, Error **errp) -{ - const QDictEntry *entry, *next; - - entry = qdict_first(qdict); - - while (entry != NULL) { - Error *local_err = NULL; - OptsFromQDictState state = { - .errp = &local_err, - .opts = opts, - }; - - next = qdict_next(qdict, entry); - - if (find_desc_by_name(opts->list->desc, entry->key)) { - qemu_opts_from_qdict_1(entry->key, entry->value, &state); - if (local_err) { - error_propagate(errp, local_err); - return; - } else { - qdict_del(qdict, entry->key); - } - } - - entry = next; - } -} - -/* - * Convert from QemuOpts to QDict. - * The QDict values are of type QString. - * TODO We'll want to use types appropriate for opt->desc->type, but - * this is enough for now. - */ -QDict *qemu_opts_to_qdict(QemuOpts *opts, QDict *qdict) -{ - QemuOpt *opt; - QObject *val; - - if (!qdict) { - qdict = qdict_new(); - } - if (opts->id) { - qdict_put(qdict, "id", qstring_from_str(opts->id)); - } - QTAILQ_FOREACH(opt, &opts->head, next) { - val = QOBJECT(qstring_from_str(opt->str)); - qdict_put_obj(qdict, opt->name, val); - } - return qdict; -} - -/* Validate parsed opts against descriptions where no - * descriptions were provided in the QemuOptsList. - */ -void qemu_opts_validate(QemuOpts *opts, const QemuOptDesc *desc, Error **errp) -{ - QemuOpt *opt; - Error *local_err = NULL; - - assert(opts_accepts_any(opts)); - - QTAILQ_FOREACH(opt, &opts->head, next) { - opt->desc = find_desc_by_name(desc, opt->name); - if (!opt->desc) { - error_setg(errp, QERR_INVALID_PARAMETER, opt->name); - return; - } - - qemu_opt_parse(opt, &local_err); - if (local_err) { - error_propagate(errp, local_err); - return; - } - } -} - -/** - * For each member of @list, call @func(@opaque, member, @errp). - * Call it with the current location temporarily set to the member's. - * @func() may store an Error through @errp, but must return non-zero then. - * When @func() returns non-zero, break the loop and return that value. - * Return zero when the loop completes. - */ -int qemu_opts_foreach(QemuOptsList *list, qemu_opts_loopfunc func, - void *opaque, Error **errp) -{ - Location loc; - QemuOpts *opts; - int rc = 0; - - loc_push_none(&loc); - QTAILQ_FOREACH(opts, &list->head, next) { - loc_restore(&opts->loc); - rc = func(opaque, opts, errp); - if (rc) { - break; - } - assert(!errp || !*errp); - } - loc_pop(&loc); - return rc; -} - -static size_t count_opts_list(QemuOptsList *list) -{ - QemuOptDesc *desc = NULL; - size_t num_opts = 0; - - if (!list) { - return 0; - } - - desc = list->desc; - while (desc && desc->name) { - num_opts++; - desc++; - } - - return num_opts; -} - -void qemu_opts_free(QemuOptsList *list) -{ - g_free(list); -} - -/* Realloc dst option list and append options from an option list (list) - * to it. dst could be NULL or a malloced list. - * The lifetime of dst must be shorter than the input list because the - * QemuOptDesc->name, ->help, and ->def_value_str strings are shared. - */ -QemuOptsList *qemu_opts_append(QemuOptsList *dst, - QemuOptsList *list) -{ - size_t num_opts, num_dst_opts; - QemuOptDesc *desc; - bool need_init = false; - bool need_head_update; - - if (!list) { - return dst; - } - - /* If dst is NULL, after realloc, some area of dst should be initialized - * before adding options to it. - */ - if (!dst) { - need_init = true; - need_head_update = true; - } else { - /* Moreover, even if dst is not NULL, the realloc may move it to a - * different address in which case we may get a stale tail pointer - * in dst->head. */ - need_head_update = QTAILQ_EMPTY(&dst->head); - } - - num_opts = count_opts_list(dst); - num_dst_opts = num_opts; - num_opts += count_opts_list(list); - dst = g_realloc(dst, sizeof(QemuOptsList) + - (num_opts + 1) * sizeof(QemuOptDesc)); - if (need_init) { - dst->name = NULL; - dst->implied_opt_name = NULL; - dst->merge_lists = false; - } - if (need_head_update) { - QTAILQ_INIT(&dst->head); - } - dst->desc[num_dst_opts].name = NULL; - - /* append list->desc to dst->desc */ - if (list) { - desc = list->desc; - while (desc && desc->name) { - if (find_desc_by_name(dst->desc, desc->name) == NULL) { - dst->desc[num_dst_opts++] = *desc; - dst->desc[num_dst_opts].name = NULL; - } - desc++; - } - } - - return dst; -} |