--- /dev/null
+#include "qemu-common.h"
+#include "qemu/error-report.h"
+#include "qemu/option.h"
+#include "qemu/config-file.h"
+#include "qapi/error.h"
+#include "qmp-commands.h"
+
+static QemuOptsList *vm_config_groups[48];
+static QemuOptsList *drive_config_groups[4];
+
+static QemuOptsList *find_list(QemuOptsList **lists, const char *group,
+ Error **errp)
+{
+ int i;
+
+ for (i = 0; lists[i] != NULL; i++) {
+ if (strcmp(lists[i]->name, group) == 0)
+ break;
+ }
+ if (lists[i] == NULL) {
+ error_setg(errp, "There is no option group '%s'", group);
+ }
+ return lists[i];
+}
+
+QemuOptsList *qemu_find_opts(const char *group)
+{
+ QemuOptsList *ret;
+ Error *local_err = NULL;
+
+ ret = find_list(vm_config_groups, group, &local_err);
+ if (local_err) {
+ error_report_err(local_err);
+ }
+
+ return ret;
+}
+
+QemuOpts *qemu_find_opts_singleton(const char *group)
+{
+ QemuOptsList *list;
+ QemuOpts *opts;
+
+ list = qemu_find_opts(group);
+ assert(list);
+ opts = qemu_opts_find(list, NULL);
+ if (!opts) {
+ opts = qemu_opts_create(list, NULL, 0, &error_abort);
+ }
+ return opts;
+}
+
+static CommandLineParameterInfoList *query_option_descs(const QemuOptDesc *desc)
+{
+ CommandLineParameterInfoList *param_list = NULL, *entry;
+ CommandLineParameterInfo *info;
+ int i;
+
+ for (i = 0; desc[i].name != NULL; i++) {
+ info = g_malloc0(sizeof(*info));
+ info->name = g_strdup(desc[i].name);
+
+ switch (desc[i].type) {
+ case QEMU_OPT_STRING:
+ info->type = COMMAND_LINE_PARAMETER_TYPE_STRING;
+ break;
+ case QEMU_OPT_BOOL:
+ info->type = COMMAND_LINE_PARAMETER_TYPE_BOOLEAN;
+ break;
+ case QEMU_OPT_NUMBER:
+ info->type = COMMAND_LINE_PARAMETER_TYPE_NUMBER;
+ break;
+ case QEMU_OPT_SIZE:
+ info->type = COMMAND_LINE_PARAMETER_TYPE_SIZE;
+ break;
+ }
+
+ if (desc[i].help) {
+ info->has_help = true;
+ info->help = g_strdup(desc[i].help);
+ }
+ if (desc[i].def_value_str) {
+ info->has_q_default = true;
+ info->q_default = g_strdup(desc[i].def_value_str);
+ }
+
+ entry = g_malloc0(sizeof(*entry));
+ entry->value = info;
+ entry->next = param_list;
+ param_list = entry;
+ }
+
+ return param_list;
+}
+
+/* remove repeated entry from the info list */
+static void cleanup_infolist(CommandLineParameterInfoList *head)
+{
+ CommandLineParameterInfoList *pre_entry, *cur, *del_entry;
+
+ cur = head;
+ while (cur->next) {
+ pre_entry = head;
+ while (pre_entry != cur->next) {
+ if (!strcmp(pre_entry->value->name, cur->next->value->name)) {
+ del_entry = cur->next;
+ cur->next = cur->next->next;
+ g_free(del_entry);
+ break;
+ }
+ pre_entry = pre_entry->next;
+ }
+ cur = cur->next;
+ }
+}
+
+/* merge the description items of two parameter infolists */
+static void connect_infolist(CommandLineParameterInfoList *head,
+ CommandLineParameterInfoList *new)
+{
+ CommandLineParameterInfoList *cur;
+
+ cur = head;
+ while (cur->next) {
+ cur = cur->next;
+ }
+ cur->next = new;
+}
+
+/* access all the local QemuOptsLists for drive option */
+static CommandLineParameterInfoList *get_drive_infolist(void)
+{
+ CommandLineParameterInfoList *head = NULL, *cur;
+ int i;
+
+ for (i = 0; drive_config_groups[i] != NULL; i++) {
+ if (!head) {
+ head = query_option_descs(drive_config_groups[i]->desc);
+ } else {
+ cur = query_option_descs(drive_config_groups[i]->desc);
+ connect_infolist(head, cur);
+ }
+ }
+ cleanup_infolist(head);
+
+ return head;
+}
+
+/* restore machine options that are now machine's properties */
+static QemuOptsList machine_opts = {
+ .merge_lists = true,
+ .head = QTAILQ_HEAD_INITIALIZER(machine_opts.head),
+ .desc = {
+ {
+ .name = "type",
+ .type = QEMU_OPT_STRING,
+ .help = "emulated machine"
+ },{
+ .name = "accel",
+ .type = QEMU_OPT_STRING,
+ .help = "accelerator list",
+ },{
+ .name = "kernel_irqchip",
+ .type = QEMU_OPT_BOOL,
+ .help = "use KVM in-kernel irqchip",
+ },{
+ .name = "kvm_shadow_mem",
+ .type = QEMU_OPT_SIZE,
+ .help = "KVM shadow MMU size",
+ },{
+ .name = "kernel",
+ .type = QEMU_OPT_STRING,
+ .help = "Linux kernel image file",
+ },{
+ .name = "initrd",
+ .type = QEMU_OPT_STRING,
+ .help = "Linux initial ramdisk file",
+ },{
+ .name = "append",
+ .type = QEMU_OPT_STRING,
+ .help = "Linux kernel command line",
+ },{
+ .name = "dtb",
+ .type = QEMU_OPT_STRING,
+ .help = "Linux kernel device tree file",
+ },{
+ .name = "dumpdtb",
+ .type = QEMU_OPT_STRING,
+ .help = "Dump current dtb to a file and quit",
+ },{
+ .name = "phandle_start",
+ .type = QEMU_OPT_NUMBER,
+ .help = "The first phandle ID we may generate dynamically",
+ },{
+ .name = "dt_compatible",
+ .type = QEMU_OPT_STRING,
+ .help = "Overrides the \"compatible\" property of the dt root node",
+ },{
+ .name = "dump-guest-core",
+ .type = QEMU_OPT_BOOL,
+ .help = "Include guest memory in a core dump",
+ },{
+ .name = "mem-merge",
+ .type = QEMU_OPT_BOOL,
+ .help = "enable/disable memory merge support",
+ },{
+ .name = "usb",
+ .type = QEMU_OPT_BOOL,
+ .help = "Set on/off to enable/disable usb",
+ },{
+ .name = "firmware",
+ .type = QEMU_OPT_STRING,
+ .help = "firmware image",
+ },{
+ .name = "iommu",
+ .type = QEMU_OPT_BOOL,
+ .help = "Set on/off to enable/disable Intel IOMMU (VT-d)",
+ },{
+ .name = "suppress-vmdesc",
+ .type = QEMU_OPT_BOOL,
+ .help = "Set on to disable self-describing migration",
+ },
+ { /* End of list */ }
+ }
+};
+
+CommandLineOptionInfoList *qmp_query_command_line_options(bool has_option,
+ const char *option,
+ Error **errp)
+{
+ CommandLineOptionInfoList *conf_list = NULL, *entry;
+ CommandLineOptionInfo *info;
+ int i;
+
+ for (i = 0; vm_config_groups[i] != NULL; i++) {
+ if (!has_option || !strcmp(option, vm_config_groups[i]->name)) {
+ info = g_malloc0(sizeof(*info));
+ info->option = g_strdup(vm_config_groups[i]->name);
+ if (!strcmp("drive", vm_config_groups[i]->name)) {
+ info->parameters = get_drive_infolist();
+ } else if (!strcmp("machine", vm_config_groups[i]->name)) {
+ info->parameters = query_option_descs(machine_opts.desc);
+ } else {
+ info->parameters =
+ query_option_descs(vm_config_groups[i]->desc);
+ }
+ entry = g_malloc0(sizeof(*entry));
+ entry->value = info;
+ entry->next = conf_list;
+ conf_list = entry;
+ }
+ }
+
+ if (conf_list == NULL) {
+ error_setg(errp, "invalid option name: %s", option);
+ }
+
+ return conf_list;
+}
+
+QemuOptsList *qemu_find_opts_err(const char *group, Error **errp)
+{
+ return find_list(vm_config_groups, group, errp);
+}
+
+void qemu_add_drive_opts(QemuOptsList *list)
+{
+ int entries, i;
+
+ entries = ARRAY_SIZE(drive_config_groups);
+ entries--; /* keep list NULL terminated */
+ for (i = 0; i < entries; i++) {
+ if (drive_config_groups[i] == NULL) {
+ drive_config_groups[i] = list;
+ return;
+ }
+ }
+ fprintf(stderr, "ran out of space in drive_config_groups");
+ abort();
+}
+
+void qemu_add_opts(QemuOptsList *list)
+{
+ int entries, i;
+
+ entries = ARRAY_SIZE(vm_config_groups);
+ entries--; /* keep list NULL terminated */
+ for (i = 0; i < entries; i++) {
+ if (vm_config_groups[i] == NULL) {
+ vm_config_groups[i] = list;
+ return;
+ }
+ }
+ fprintf(stderr, "ran out of space in vm_config_groups");
+ abort();
+}
+
+int qemu_set_option(const char *str)
+{
+ Error *local_err = NULL;
+ char group[64], id[64], arg[64];
+ QemuOptsList *list;
+ QemuOpts *opts;
+ int rc, offset;
+
+ rc = sscanf(str, "%63[^.].%63[^.].%63[^=]%n", group, id, arg, &offset);
+ if (rc < 3 || str[offset] != '=') {
+ error_report("can't parse: \"%s\"", str);
+ return -1;
+ }
+
+ list = qemu_find_opts(group);
+ if (list == NULL) {
+ return -1;
+ }
+
+ opts = qemu_opts_find(list, id);
+ if (!opts) {
+ error_report("there is no %s \"%s\" defined",
+ list->name, id);
+ return -1;
+ }
+
+ qemu_opt_set(opts, arg, str + offset + 1, &local_err);
+ if (local_err) {
+ error_report_err(local_err);
+ return -1;
+ }
+ return 0;
+}
+
+struct ConfigWriteData {
+ QemuOptsList *list;
+ FILE *fp;
+};
+
+static int config_write_opt(void *opaque, const char *name, const char *value,
+ Error **errp)
+{
+ struct ConfigWriteData *data = opaque;
+
+ fprintf(data->fp, " %s = \"%s\"\n", name, value);
+ return 0;
+}
+
+static int config_write_opts(void *opaque, QemuOpts *opts, Error **errp)
+{
+ 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, NULL);
+ 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, NULL);
+ }
+}
+
+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;
+ Error *local_err = 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, &local_err);
+ if (local_err) {
+ error_report_err(local_err);
+ goto out;
+ }
+ opts = qemu_opts_create(list, id, 1, NULL);
+ continue;
+ }
+ if (sscanf(line, "[%63[^]]]", group) == 1) {
+ /* group without id */
+ list = find_list(lists, group, &local_err);
+ if (local_err) {
+ error_report_err(local_err);
+ goto out;
+ }
+ opts = qemu_opts_create(list, NULL, 0, &error_abort);
+ continue;
+ }
+ value[0] = '\0';
+ if (sscanf(line, " %63s = \"%1023[^\"]\"", arg, value) == 2 ||
+ sscanf(line, " %63s = \"\"", arg) == 1) {
+ /* arg = value */
+ if (opts == NULL) {
+ error_report("no group defined");
+ goto out;
+ }
+ qemu_opt_set(opts, arg, value, &local_err);
+ if (local_err) {
+ error_report_err(local_err);
+ 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;
+ }
+}
+
+static void config_parse_qdict_section(QDict *options, QemuOptsList *opts,
+ Error **errp)
+{
+ QemuOpts *subopts;
+ QDict *subqdict;
+ QList *list = NULL;
+ Error *local_err = NULL;
+ size_t orig_size, enum_size;
+ char *prefix;
+
+ prefix = g_strdup_printf("%s.", opts->name);
+ qdict_extract_subqdict(options, &subqdict, prefix);
+ g_free(prefix);
+ orig_size = qdict_size(subqdict);
+ if (!orig_size) {
+ goto out;
+ }
+
+ subopts = qemu_opts_create(opts, NULL, 0, &local_err);
+ if (local_err) {
+ error_propagate(errp, local_err);
+ goto out;
+ }
+
+ qemu_opts_absorb_qdict(subopts, subqdict, &local_err);
+ if (local_err) {
+ error_propagate(errp, local_err);
+ goto out;
+ }
+
+ enum_size = qdict_size(subqdict);
+ if (enum_size < orig_size && enum_size) {
+ error_setg(errp, "Unknown option '%s' for [%s]",
+ qdict_first(subqdict)->key, opts->name);
+ goto out;
+ }
+
+ if (enum_size) {
+ /* Multiple, enumerated sections */
+ QListEntry *list_entry;
+ unsigned i = 0;
+
+ /* Not required anymore */
+ qemu_opts_del(subopts);
+
+ qdict_array_split(subqdict, &list);
+ if (qdict_size(subqdict)) {
+ error_setg(errp, "Unused option '%s' for [%s]",
+ qdict_first(subqdict)->key, opts->name);
+ goto out;
+ }
+
+ QLIST_FOREACH_ENTRY(list, list_entry) {
+ QDict *section = qobject_to_qdict(qlist_entry_obj(list_entry));
+ char *opt_name;
+
+ if (!section) {
+ error_setg(errp, "[%s] section (index %u) does not consist of "
+ "keys", opts->name, i);
+ goto out;
+ }
+
+ opt_name = g_strdup_printf("%s.%u", opts->name, i++);
+ subopts = qemu_opts_create(opts, opt_name, 1, &local_err);
+ g_free(opt_name);
+ if (local_err) {
+ error_propagate(errp, local_err);
+ goto out;
+ }
+
+ qemu_opts_absorb_qdict(subopts, section, &local_err);
+ if (local_err) {
+ error_propagate(errp, local_err);
+ qemu_opts_del(subopts);
+ goto out;
+ }
+
+ if (qdict_size(section)) {
+ error_setg(errp, "[%s] section doesn't support the option '%s'",
+ opts->name, qdict_first(section)->key);
+ qemu_opts_del(subopts);
+ goto out;
+ }
+ }
+ }
+
+out:
+ QDECREF(subqdict);
+ QDECREF(list);
+}
+
+void qemu_config_parse_qdict(QDict *options, QemuOptsList **lists,
+ Error **errp)
+{
+ int i;
+ Error *local_err = NULL;
+
+ for (i = 0; lists[i]; i++) {
+ config_parse_qdict_section(options, lists[i], &local_err);
+ if (local_err) {
+ error_propagate(errp, local_err);
+ return;
+ }
+ }
+}
Code Review / kvmfornfv.git / blobdiff