+int qemu_global_option(const char *str)
+{
+ char driver[64], property[64];
+ QemuOpts *opts;
+ int rc, offset;
+
+ rc = sscanf(str, "%63[^.].%63[^=]%n", driver, property, &offset);
+ if (rc < 2 || str[offset] != '=') {
+ error_report("can't parse: \"%s\"", str);
+ return -1;
+ }
+
+ opts = qemu_opts_create(&qemu_global_opts, NULL, 0);
+ qemu_opt_set(opts, "driver", driver);
+ qemu_opt_set(opts, "property", property);
+ qemu_opt_set(opts, "value", str+offset+1);
+ return 0;
+}
+
+struct ConfigWriteData {
+ QemuOptsList *list;
+ FILE *fp;
+};
+
+static int config_write_opt(const char *name, const char *value, void *opaque)
+{
+ struct ConfigWriteData *data = opaque;
+
+ fprintf(data->fp, " %s = \"%s\"\n", name, value);
+ return 0;
+}
+
+static int config_write_opts(QemuOpts *opts, void *opaque)
+{
+ struct ConfigWriteData *data = opaque;
+ const char *id = qemu_opts_id(opts);
+
+ if (id) {
+ fprintf(data->fp, "[%s \"%s\"]\n", data->list->name, id);
+ } else {
+ fprintf(data->fp, "[%s]\n", data->list->name);
+ }
+ qemu_opt_foreach(opts, config_write_opt, data, 0);
+ fprintf(data->fp, "\n");
+ return 0;
+}
+
+void qemu_config_write(FILE *fp)
+{
+ struct ConfigWriteData data = { .fp = fp };
+ QemuOptsList **lists = vm_config_groups;
+ int i;
+
+ fprintf(fp, "# qemu config file\n\n");
+ for (i = 0; lists[i] != NULL; i++) {
+ data.list = lists[i];
+ qemu_opts_foreach(data.list, config_write_opts, &data, 0);
+ }
+}
+
+int qemu_config_parse(FILE *fp, QemuOptsList **lists, const char *fname)
+{
+ char line[1024], group[64], id[64], arg[64], value[1024];
+ Location loc;
+ QemuOptsList *list = NULL;
+ QemuOpts *opts = NULL;
+ int res = -1, lno = 0;
+
+ loc_push_none(&loc);
+ while (fgets(line, sizeof(line), fp) != NULL) {
+ loc_set_file(fname, ++lno);
+ if (line[0] == '\n') {
+ /* skip empty lines */
+ continue;
+ }
+ if (line[0] == '#') {
+ /* comment */
+ continue;
+ }
+ if (sscanf(line, "[%63s \"%63[^\"]\"]", group, id) == 2) {
+ /* group with id */
+ list = find_list(lists, group);
+ if (list == NULL)
+ goto out;
+ opts = qemu_opts_create(list, id, 1);
+ continue;
+ }
+ if (sscanf(line, "[%63[^]]]", group) == 1) {
+ /* group without id */
+ list = find_list(lists, group);
+ if (list == NULL)
+ goto out;
+ opts = qemu_opts_create(list, NULL, 0);
+ continue;
+ }
+ if (sscanf(line, " %63s = \"%1023[^\"]\"", arg, value) == 2) {
+ /* arg = value */
+ if (opts == NULL) {
+ error_report("no group defined");
+ goto out;
+ }
+ if (qemu_opt_set(opts, arg, value) != 0) {
+ goto out;
+ }
+ continue;
+ }
+ error_report("parse error");
+ goto out;
+ }
+ if (ferror(fp)) {
+ error_report("error reading file");
+ goto out;
+ }
+ res = 0;
+out:
+ loc_pop(&loc);
+ return res;
+}
+
+int qemu_read_config_file(const char *filename)
+{
+ FILE *f = fopen(filename, "r");
+ int ret;
+
+ if (f == NULL) {
+ return -errno;
+ }
+
+ ret = qemu_config_parse(f, vm_config_groups, filename);
+ fclose(f);
+
+ if (ret == 0) {
+ return 0;
+ } else {
+ return -EINVAL;
+ }
+}