diff options
| -rw-r--r-- | include/qemu/config-file.h | 6 | ||||
| -rw-r--r-- | util/qemu-config.c | 100 |
2 files changed, 106 insertions, 0 deletions
diff --git a/include/qemu/config-file.h b/include/qemu/config-file.h index 508428ff32..dbd97c4bdb 100644 --- a/include/qemu/config-file.h +++ b/include/qemu/config-file.h @@ -4,6 +4,7 @@ #include <stdio.h> #include "qemu/option.h" #include "qapi/error.h" +#include "qapi/qmp/qdict.h" QemuOptsList *qemu_find_opts(const char *group); QemuOptsList *qemu_find_opts_err(const char *group, Error **errp); @@ -18,6 +19,11 @@ int qemu_config_parse(FILE *fp, QemuOptsList **lists, const char *fname); int qemu_read_config_file(const char *filename); +/* Parse QDict options as a replacement for a config file (allowing multiple + enumerated (0..(n-1)) configuration "sections") */ +void qemu_config_parse_qdict(QDict *options, QemuOptsList **lists, + Error **errp); + /* Read default QEMU config files */ int qemu_read_default_config_files(bool userconfig); diff --git a/util/qemu-config.c b/util/qemu-config.c index 7973659518..9298f55ecf 100644 --- a/util/qemu-config.c +++ b/util/qemu-config.c @@ -356,3 +356,103 @@ int qemu_read_config_file(const char *filename) 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 (error_is_set(&local_err)) { + error_propagate(errp, local_err); + goto out; + } + + qemu_opts_absorb_qdict(subopts, subqdict, &local_err); + if (error_is_set(&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; + + 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 (error_is_set(&local_err)) { + error_propagate(errp, local_err); + goto out; + } + + qemu_opts_absorb_qdict(subopts, section, &local_err); + if (error_is_set(&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 (error_is_set(&local_err)) { + error_propagate(errp, local_err); + return; + } + } +} |