summaryrefslogtreecommitdiffstats
path: root/qemu/util/qemu-option.c
diff options
context:
space:
mode:
Diffstat (limited to 'qemu/util/qemu-option.c')
-rw-r--r--qemu/util/qemu-option.c1207
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;
-}