| #include "qemu/osdep.h" |
| #include "block/qdict.h" /* for qdict_extract_subqdict() */ |
| #include "qapi/error.h" |
| #include "qapi/qapi-commands-misc.h" |
| #include "qapi/qmp/qerror.h" |
| #include "qapi/qmp/qdict.h" |
| #include "qapi/qmp/qlist.h" |
| #include "qemu/error-report.h" |
| #include "qemu/option.h" |
| #include "qemu/config-file.h" |
| |
| static QemuOptsList *vm_config_groups[48]; |
| static QemuOptsList *drive_config_groups[5]; |
| |
| static QemuOptsList *find_list(QemuOptsList **lists, const char *group, |
| Error **errp) |
| { |
| int i; |
| |
| qemu_load_module_for_opts(group); |
| 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; |
| 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); |
| } |
| |
| QAPI_LIST_PREPEND(param_list, info); |
| } |
| |
| 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; |
| del_entry->next = NULL; |
| qapi_free_CommandLineParameterInfoList(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", |
| },{ |
| .name = "aes-key-wrap", |
| .type = QEMU_OPT_BOOL, |
| .help = "enable/disable AES key wrapping using the CPACF wrapping key", |
| },{ |
| .name = "dea-key-wrap", |
| .type = QEMU_OPT_BOOL, |
| .help = "enable/disable DEA key wrapping using the CPACF wrapping key", |
| },{ |
| .name = "loadparm", |
| .type = QEMU_OPT_STRING, |
| .help = "Up to 8 chars in set of [A-Za-z0-9. ](lower case chars" |
| " converted to upper case) to pass to machine" |
| " loader, boot manager, and guest kernel", |
| }, |
| { /* End of list */ } |
| } |
| }; |
| |
| CommandLineOptionInfoList *qmp_query_command_line_options(bool has_option, |
| const char *option, |
| Error **errp) |
| { |
| CommandLineOptionInfoList *conf_list = NULL; |
| 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 { |
| info->parameters = |
| query_option_descs(vm_config_groups[i]->desc); |
| } |
| QAPI_LIST_PREPEND(conf_list, info); |
| } |
| } |
| |
| if (!has_option || !strcmp(option, "machine")) { |
| info = g_malloc0(sizeof(*info)); |
| info->option = g_strdup("machine"); |
| info->parameters = query_option_descs(machine_opts.desc); |
| QAPI_LIST_PREPEND(conf_list, info); |
| } |
| |
| 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(); |
| } |
| |
| /* Returns number of config groups on success, -errno on error */ |
| static int qemu_config_foreach(FILE *fp, QEMUConfigCB *cb, void *opaque, |
| const char *fname, Error **errp) |
| { |
| char line[1024], prev_group[64], group[64], arg[64], value[1024]; |
| Location loc; |
| Error *local_err = NULL; |
| QDict *qdict = NULL; |
| int res = -EINVAL, lno = 0; |
| int count = 0; |
| |
| loc_push_none(&loc); |
| while (fgets(line, sizeof(line), fp) != NULL) { |
| ++lno; |
| if (line[0] == '\n') { |
| /* skip empty lines */ |
| continue; |
| } |
| if (line[0] == '#') { |
| /* comment */ |
| continue; |
| } |
| if (line[0] == '[') { |
| QDict *prev = qdict; |
| if (sscanf(line, "[%63s \"%63[^\"]\"]", group, value) == 2) { |
| qdict = qdict_new(); |
| qdict_put_str(qdict, "id", value); |
| count++; |
| } else if (sscanf(line, "[%63[^]]]", group) == 1) { |
| qdict = qdict_new(); |
| count++; |
| } |
| if (qdict != prev) { |
| if (prev) { |
| cb(prev_group, prev, opaque, &local_err); |
| qobject_unref(prev); |
| if (local_err) { |
| error_propagate(errp, local_err); |
| goto out; |
| } |
| } |
| strcpy(prev_group, group); |
| continue; |
| } |
| } |
| loc_set_file(fname, lno); |
| value[0] = '\0'; |
| if (sscanf(line, " %63s = \"%1023[^\"]\"", arg, value) == 2 || |
| sscanf(line, " %63s = \"\"", arg) == 1) { |
| /* arg = value */ |
| if (qdict == NULL) { |
| error_setg(errp, "no group defined"); |
| goto out; |
| } |
| qdict_put_str(qdict, arg, value); |
| continue; |
| } |
| error_setg(errp, "parse error"); |
| goto out; |
| } |
| if (ferror(fp)) { |
| loc_pop(&loc); |
| error_setg_errno(errp, errno, "Cannot read config file"); |
| goto out_no_loc; |
| } |
| res = count; |
| if (qdict) { |
| cb(group, qdict, opaque, errp); |
| } |
| out: |
| loc_pop(&loc); |
| out_no_loc: |
| qobject_unref(qdict); |
| return res; |
| } |
| |
| void qemu_config_do_parse(const char *group, QDict *qdict, void *opaque, Error **errp) |
| { |
| QemuOptsList **lists = opaque; |
| QemuOptsList *list; |
| |
| list = find_list(lists, group, errp); |
| if (!list) { |
| return; |
| } |
| |
| qemu_opts_from_qdict(list, qdict, errp); |
| } |
| |
| int qemu_config_parse(FILE *fp, QemuOptsList **lists, const char *fname, Error **errp) |
| { |
| return qemu_config_foreach(fp, qemu_config_do_parse, lists, fname, errp); |
| } |
| |
| int qemu_read_config_file(const char *filename, QEMUConfigCB *cb, Error **errp) |
| { |
| FILE *f = fopen(filename, "r"); |
| int ret; |
| |
| if (f == NULL) { |
| error_setg_file_open(errp, errno, filename); |
| return -errno; |
| } |
| |
| ret = qemu_config_foreach(f, cb, vm_config_groups, filename, errp); |
| fclose(f); |
| return ret; |
| } |
| |
| static void config_parse_qdict_section(QDict *options, QemuOptsList *opts, |
| Error **errp) |
| { |
| QemuOpts *subopts; |
| QDict *subqdict; |
| QList *list = 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, errp); |
| if (!subopts) { |
| goto out; |
| } |
| |
| if (!qemu_opts_absorb_qdict(subopts, subqdict, errp)) { |
| 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, errp); |
| g_free(opt_name); |
| if (!subopts) { |
| goto out; |
| } |
| |
| if (!qemu_opts_absorb_qdict(subopts, section, errp)) { |
| 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: |
| qobject_unref(subqdict); |
| qobject_unref(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; |
| } |
| } |
| } |
