diff options
Diffstat (limited to 'contrib/qemu/util/qemu-option.c')
| -rw-r--r-- | contrib/qemu/util/qemu-option.c | 1126 |
1 files changed, 0 insertions, 1126 deletions
diff --git a/contrib/qemu/util/qemu-option.c b/contrib/qemu/util/qemu-option.c deleted file mode 100644 index e0ef426daa0..00000000000 --- a/contrib/qemu/util/qemu-option.c +++ /dev/null @@ -1,1126 +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 <stdio.h> -#include <string.h> - -#include "qemu-common.h" -#include "qemu/error-report.h" -#include "qapi/qmp/types.h" -#include "qapi/error.h" -#include "qapi/qmp/qerror.h" -#include "qemu/option_int.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); -} - -/* - * Searches an option list for an option with the given name - */ -QEMUOptionParameter *get_option_parameter(QEMUOptionParameter *list, - const char *name) -{ - while (list && list->name) { - if (!strcmp(list->name, name)) { - return list; - } - list++; - } - - return NULL; -} - -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_set(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_set(errp, QERR_INVALID_PARAMETER_VALUE, name, "a number"); - return; - } - *ret = number; - } else { - error_set(errp, QERR_INVALID_PARAMETER_VALUE, name, "a number"); - } -} - -static 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); - 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_set(errp, QERR_INVALID_PARAMETER_VALUE, name, "a size"); -#if 0 /* conversion from qerror_report() to error_set() broke this: */ - error_printf_unless_qmp("You may use k, M, G or T suffixes for " - "kilobytes, megabytes, gigabytes and terabytes.\n"); -#endif - return; - } - } else { - error_set(errp, QERR_INVALID_PARAMETER_VALUE, name, "a size"); - } -} - -/* - * Sets the value of a parameter in a given option list. The parsing of the - * value depends on the type of option: - * - * OPT_FLAG (uses value.n): - * If no value is given, the flag is set to 1. - * Otherwise the value must be "on" (set to 1) or "off" (set to 0) - * - * OPT_STRING (uses value.s): - * value is strdup()ed and assigned as option value - * - * OPT_SIZE (uses value.n): - * The value is converted to an integer. Suffixes for kilobytes etc. are - * allowed (powers of 1024). - * - * Returns 0 on succes, -1 in error cases - */ -int set_option_parameter(QEMUOptionParameter *list, const char *name, - const char *value) -{ - bool flag; - Error *local_err = NULL; - - // Find a matching parameter - list = get_option_parameter(list, name); - if (list == NULL) { - fprintf(stderr, "Unknown option '%s'\n", name); - return -1; - } - - // Process parameter - switch (list->type) { - case OPT_FLAG: - parse_option_bool(name, value, &flag, &local_err); - if (!error_is_set(&local_err)) { - list->value.n = flag; - } - break; - - case OPT_STRING: - if (value != NULL) { - list->value.s = g_strdup(value); - } else { - fprintf(stderr, "Option '%s' needs a parameter\n", name); - return -1; - } - break; - - case OPT_SIZE: - parse_option_size(name, value, &list->value.n, &local_err); - break; - - default: - fprintf(stderr, "Bug: Option '%s' has an unknown type\n", name); - return -1; - } - - if (error_is_set(&local_err)) { - qerror_report_err(local_err); - error_free(local_err); - return -1; - } - - return 0; -} - -/* - * Sets the given parameter to an integer instead of a string. - * This function cannot be used to set string options. - * - * Returns 0 on success, -1 in error cases - */ -int set_option_parameter_int(QEMUOptionParameter *list, const char *name, - uint64_t value) -{ - // Find a matching parameter - list = get_option_parameter(list, name); - if (list == NULL) { - fprintf(stderr, "Unknown option '%s'\n", name); - return -1; - } - - // Process parameter - switch (list->type) { - case OPT_FLAG: - case OPT_NUMBER: - case OPT_SIZE: - list->value.n = value; - break; - - default: - return -1; - } - - return 0; -} - -/* - * Frees a option list. If it contains strings, the strings are freed as well. - */ -void free_option_parameters(QEMUOptionParameter *list) -{ - QEMUOptionParameter *cur = list; - - while (cur && cur->name) { - if (cur->type == OPT_STRING) { - g_free(cur->value.s); - } - cur++; - } - - g_free(list); -} - -/* - * Count valid options in list - */ -static size_t count_option_parameters(QEMUOptionParameter *list) -{ - size_t num_options = 0; - - while (list && list->name) { - num_options++; - list++; - } - - return num_options; -} - -/* - * Append an option list (list) to an option list (dest). - * - * If dest is NULL, a new copy of list is created. - * - * Returns a pointer to the first element of dest (or the newly allocated copy) - */ -QEMUOptionParameter *append_option_parameters(QEMUOptionParameter *dest, - QEMUOptionParameter *list) -{ - size_t num_options, num_dest_options; - - num_options = count_option_parameters(dest); - num_dest_options = num_options; - - num_options += count_option_parameters(list); - - dest = g_realloc(dest, (num_options + 1) * sizeof(QEMUOptionParameter)); - dest[num_dest_options].name = NULL; - - while (list && list->name) { - if (get_option_parameter(dest, list->name) == NULL) { - dest[num_dest_options++] = *list; - dest[num_dest_options].name = NULL; - } - list++; - } - - return dest; -} - -/* - * Parses a parameter string (param) into an option list (dest). - * - * list is the template option list. If dest is NULL, a new copy of list is - * created. If list is NULL, this function fails. - * - * A parameter string consists of one or more parameters, separated by commas. - * Each parameter consists of its name and possibly of a value. In the latter - * case, the value is delimited by an = character. To specify a value which - * contains commas, double each comma so it won't be recognized as the end of - * the parameter. - * - * For more details of the parsing see above. - * - * Returns a pointer to the first element of dest (or the newly allocated copy) - * or NULL in error cases - */ -QEMUOptionParameter *parse_option_parameters(const char *param, - QEMUOptionParameter *list, QEMUOptionParameter *dest) -{ - QEMUOptionParameter *allocated = NULL; - char name[256]; - char value[256]; - char *param_delim, *value_delim; - char next_delim; - - if (list == NULL) { - return NULL; - } - - if (dest == NULL) { - dest = allocated = append_option_parameters(NULL, list); - } - - while (*param) { - - // Find parameter name and value in the string - param_delim = strchr(param, ','); - value_delim = strchr(param, '='); - - if (value_delim && (value_delim < param_delim || !param_delim)) { - next_delim = '='; - } else { - next_delim = ','; - value_delim = NULL; - } - - param = get_opt_name(name, sizeof(name), param, next_delim); - if (value_delim) { - param = get_opt_value(value, sizeof(value), param + 1); - } - if (*param != '\0') { - param++; - } - - // Set the parameter - if (set_option_parameter(dest, name, value_delim ? value : NULL)) { - goto fail; - } - } - - return dest; - -fail: - // Only free the list if it was newly allocated - free_option_parameters(allocated); - return NULL; -} - -/* - * Prints all options of a list that have a value to stdout - */ -void print_option_parameters(QEMUOptionParameter *list) -{ - while (list && list->name) { - switch (list->type) { - case OPT_STRING: - if (list->value.s != NULL) { - printf("%s='%s' ", list->name, list->value.s); - } - break; - case OPT_FLAG: - printf("%s=%s ", list->name, list->value.n ? "on" : "off"); - break; - case OPT_SIZE: - case OPT_NUMBER: - printf("%s=%" PRId64 " ", list->name, list->value.n); - break; - default: - printf("%s=(unknown type) ", list->name); - break; - } - list++; - } -} - -/* - * Prints an overview of all available options - */ -void print_option_help(QEMUOptionParameter *list) -{ - printf("Supported options:\n"); - while (list && list->name) { - printf("%-16s %s\n", list->name, - list->help ? list->help : "No description available"); - list++; - } -} - -/* ------------------------------------------------------------------ */ - -static 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; -} - -const char *qemu_opt_get(QemuOpts *opts, const char *name) -{ - QemuOpt *opt = qemu_opt_find(opts, name); - return opt ? opt->str : NULL; -} - -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; -} - -bool qemu_opt_get_bool(QemuOpts *opts, const char *name, bool defval) -{ - QemuOpt *opt = qemu_opt_find(opts, name); - - if (opt == NULL) - return defval; - assert(opt->desc && opt->desc->type == QEMU_OPT_BOOL); - return opt->value.boolean; -} - -uint64_t qemu_opt_get_number(QemuOpts *opts, const char *name, uint64_t defval) -{ - QemuOpt *opt = qemu_opt_find(opts, name); - - if (opt == NULL) - return defval; - assert(opt->desc && opt->desc->type == QEMU_OPT_NUMBER); - return opt->value.uint; -} - -uint64_t qemu_opt_get_size(QemuOpts *opts, const char *name, uint64_t defval) -{ - QemuOpt *opt = qemu_opt_find(opts, name); - - if (opt == NULL) - return defval; - assert(opt->desc && opt->desc->type == QEMU_OPT_SIZE); - return opt->value.uint; -} - -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 void qemu_opt_del(QemuOpt *opt) -{ - QTAILQ_REMOVE(&opt->opts->head, opt, next); - g_free((/* !const */ char*)opt->name); - g_free((/* !const */ char*)opt->str); - g_free(opt); -} - -static bool opts_accepts_any(const QemuOpts *opts) -{ - return opts->list->desc[0].name == NULL; -} - -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; -} - -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_set(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 (error_is_set(&local_err)) { - error_propagate(errp, local_err); - qemu_opt_del(opt); - } -} - -int qemu_opt_set(QemuOpts *opts, const char *name, const char *value) -{ - Error *local_err = NULL; - - opt_set(opts, name, value, false, &local_err); - if (error_is_set(&local_err)) { - qerror_report_err(local_err); - error_free(local_err); - return -1; - } - - return 0; -} - -void qemu_opt_set_err(QemuOpts *opts, const char *name, const char *value, - Error **errp) -{ - opt_set(opts, name, value, false, errp); -} - -int qemu_opt_set_bool(QemuOpts *opts, const char *name, bool val) -{ - 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)) { - qerror_report(QERR_INVALID_PARAMETER, name); - g_free(opt); - return -1; - } - - 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); - - return 0; -} - -int qemu_opt_set_number(QemuOpts *opts, const char *name, int64_t val) -{ - 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)) { - qerror_report(QERR_INVALID_PARAMETER, name); - g_free(opt); - return -1; - } - - 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); - - return 0; -} - -int qemu_opt_foreach(QemuOpts *opts, qemu_opt_loopfunc func, void *opaque, - int abort_on_failure) -{ - QemuOpt *opt; - int rc = 0; - - QTAILQ_FOREACH(opt, &opts->head, next) { - rc = func(opt->name, opt->str, opaque); - if (abort_on_failure && rc != 0) - break; - } - return rc; -} - -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; -} - -static int id_wellformed(const char *id) -{ - int i; - - if (!qemu_isalpha(id[0])) { - return 0; - } - for (i = 1; id[i]; i++) { - if (!qemu_isalnum(id[i]) && !strchr("-._", id[i])) { - return 0; - } - } - return 1; -} - -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_set(errp,QERR_INVALID_PARAMETER_VALUE, "id", "an identifier"); -#if 0 /* conversion from qerror_report() to error_set() broke this: */ - error_printf_unless_qmp("Identifiers consist of letters, digits, '-', '.', '_', starting with a letter.\n"); -#endif - return NULL; - } - opts = qemu_opts_find(list, id); - if (opts != NULL) { - if (fail_if_exists && !list->merge_lists) { - error_set(errp, QERR_DUPLICATE_ID, 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; -} - -QemuOpts *qemu_opts_create_nofail(QemuOptsList *list) -{ - QemuOpts *opts; - Error *errp = NULL; - opts = qemu_opts_create(list, NULL, 0, &errp); - assert_no_error(errp); - 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); -} - -int qemu_opts_set(QemuOptsList *list, const char *id, - const char *name, const char *value) -{ - QemuOpts *opts; - Error *local_err = NULL; - - opts = qemu_opts_create(list, id, 1, &local_err); - if (error_is_set(&local_err)) { - qerror_report_err(local_err); - error_free(local_err); - return -1; - } - return qemu_opt_set(opts, name, value); -} - -const char *qemu_opts_id(QemuOpts *opts) -{ - return opts->id; -} - -void qemu_opts_del(QemuOpts *opts) -{ - QemuOpt *opt; - - 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); -} - -int qemu_opts_print(QemuOpts *opts, void *dummy) -{ - QemuOpt *opt; - - fprintf(stderr, "%s: %s:", opts->list->name, - opts->id ? opts->id : "<noid>"); - QTAILQ_FOREACH(opt, &opts->head, next) { - fprintf(stderr, " %s=\"%s\"", opt->name, opt->str); - } - fprintf(stderr, "\n"); - return 0; -} - -static int opts_do_parse(QemuOpts *opts, const char *params, - const char *firstname, bool prepend) -{ - 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 (error_is_set(&local_err)) { - qerror_report_err(local_err); - error_free(local_err); - return -1; - } - } - if (*p != ',') { - break; - } - } - return 0; -} - -int qemu_opts_do_parse(QemuOpts *opts, const char *params, const char *firstname) -{ - return opts_do_parse(opts, params, firstname, false); -} - -static QemuOpts *opts_parse(QemuOptsList *list, const char *params, - int permit_abbrev, bool defaults) -{ - 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; - } - opts = qemu_opts_create(list, id, !defaults, &local_err); - if (opts == NULL) { - if (error_is_set(&local_err)) { - qerror_report_err(local_err); - error_free(local_err); - } - return NULL; - } - - if (opts_do_parse(opts, params, firstname, defaults) != 0) { - qemu_opts_del(opts); - return NULL; - } - - return opts; -} - -QemuOpts *qemu_opts_parse(QemuOptsList *list, const char *params, - int permit_abbrev) -{ - return opts_parse(list, params, permit_abbrev, false); -} - -void qemu_opts_set_defaults(QemuOptsList *list, const char *params, - int permit_abbrev) -{ - QemuOpts *opts; - - opts = opts_parse(list, params, permit_abbrev, true); - 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") || error_is_set(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_int(qobject_to_qbool(obj)) ? "on" : "off"); - value = buf; - break; - default: - return; - } - - qemu_opt_set_err(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 (error_is_set(&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 (error_is_set(&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 (error_is_set(&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_set(errp, QERR_INVALID_PARAMETER, opt->name); - return; - } - - qemu_opt_parse(opt, &local_err); - if (error_is_set(&local_err)) { - error_propagate(errp, local_err); - return; - } - } -} - -int qemu_opts_foreach(QemuOptsList *list, qemu_opts_loopfunc func, void *opaque, - int abort_on_failure) -{ - Location loc; - QemuOpts *opts; - int rc = 0; - - loc_push_none(&loc); - QTAILQ_FOREACH(opts, &list->head, next) { - loc_restore(&opts->loc); - rc |= func(opts, opaque); - if (abort_on_failure && rc != 0) - break; - } - loc_pop(&loc); - return rc; -} |