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/*
* QMP commands related to the monitor (common to sysemu and tools)
*
* Copyright (c) 2003-2004 Fabrice Bellard
*
* 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 "monitor-internal.h"
#include "qemu-version.h"
#include "qapi/compat-policy.h"
#include "qapi/error.h"
#include "qapi/qapi-commands-control.h"
#include "qapi/qapi-commands-introspect.h"
#include "qapi/qapi-introspect.h"
#include "qapi/qapi-visit-introspect.h"
#include "qapi/qobject-input-visitor.h"
/*
* Accept QMP capabilities in @list for @mon.
* On success, set mon->qmp.capab[], and return true.
* On error, set @errp, and return false.
*/
static bool qmp_caps_accept(MonitorQMP *mon, QMPCapabilityList *list,
Error **errp)
{
GString *unavailable = NULL;
bool capab[QMP_CAPABILITY__MAX];
memset(capab, 0, sizeof(capab));
for (; list; list = list->next) {
if (!mon->capab_offered[list->value]) {
if (!unavailable) {
unavailable = g_string_new(QMPCapability_str(list->value));
} else {
g_string_append_printf(unavailable, ", %s",
QMPCapability_str(list->value));
}
}
capab[list->value] = true;
}
if (unavailable) {
error_setg(errp, "Capability %s not available", unavailable->str);
g_string_free(unavailable, true);
return false;
}
memcpy(mon->capab, capab, sizeof(capab));
return true;
}
void qmp_qmp_capabilities(bool has_enable, QMPCapabilityList *enable,
Error **errp)
{
Monitor *cur_mon = monitor_cur();
MonitorQMP *mon;
assert(monitor_is_qmp(cur_mon));
mon = container_of(cur_mon, MonitorQMP, common);
if (mon->commands == &qmp_commands) {
error_set(errp, ERROR_CLASS_COMMAND_NOT_FOUND,
"Capabilities negotiation is already complete, command "
"ignored");
return;
}
if (!qmp_caps_accept(mon, enable, errp)) {
return;
}
mon->commands = &qmp_commands;
}
VersionInfo *qmp_query_version(Error **errp)
{
VersionInfo *info = g_new0(VersionInfo, 1);
info->qemu = g_new0(VersionTriple, 1);
info->qemu->major = QEMU_VERSION_MAJOR;
info->qemu->minor = QEMU_VERSION_MINOR;
info->qemu->micro = QEMU_VERSION_MICRO;
info->package = g_strdup(QEMU_PKGVERSION);
return info;
}
static void query_commands_cb(const QmpCommand *cmd, void *opaque)
{
CommandInfo *info;
CommandInfoList **list = opaque;
if (!cmd->enabled) {
return;
}
info = g_malloc0(sizeof(*info));
info->name = g_strdup(cmd->name);
QAPI_LIST_PREPEND(*list, info);
}
CommandInfoList *qmp_query_commands(Error **errp)
{
CommandInfoList *list = NULL;
Monitor *cur_mon = monitor_cur();
MonitorQMP *mon;
assert(monitor_is_qmp(cur_mon));
mon = container_of(cur_mon, MonitorQMP, common);
qmp_for_each_command(mon->commands, query_commands_cb, &list);
return list;
}
static void *split_off_generic_list(void *list,
bool (*splitp)(void *elt),
void **part)
{
GenericList *keep = NULL, **keep_tailp = &keep;
GenericList *split = NULL, **split_tailp = &split;
GenericList *tail;
for (tail = list; tail; tail = tail->next) {
if (splitp(tail)) {
*split_tailp = tail;
split_tailp = &tail->next;
} else {
*keep_tailp = tail;
keep_tailp = &tail->next;
}
}
*keep_tailp = *split_tailp = NULL;
*part = split;
return keep;
}
static bool is_in(const char *s, strList *list)
{
strList *tail;
for (tail = list; tail; tail = tail->next) {
if (!strcmp(tail->value, s)) {
return true;
}
}
return false;
}
static bool is_entity_deprecated(void *link)
{
return is_in("deprecated", ((SchemaInfoList *)link)->value->features);
}
static bool is_member_deprecated(void *link)
{
return is_in("deprecated",
((SchemaInfoObjectMemberList *)link)->value->features);
}
static SchemaInfoList *zap_deprecated(SchemaInfoList *schema)
{
void *to_zap;
SchemaInfoList *tail;
SchemaInfo *ent;
schema = split_off_generic_list(schema, is_entity_deprecated, &to_zap);
qapi_free_SchemaInfoList(to_zap);
for (tail = schema; tail; tail = tail->next) {
ent = tail->value;
if (ent->meta_type == SCHEMA_META_TYPE_OBJECT) {
ent->u.object.members
= split_off_generic_list(ent->u.object.members,
is_member_deprecated, &to_zap);
qapi_free_SchemaInfoObjectMemberList(to_zap);
}
}
return schema;
}
SchemaInfoList *qmp_query_qmp_schema(Error **errp)
{
QObject *obj = qobject_from_qlit(&qmp_schema_qlit);
Visitor *v = qobject_input_visitor_new(obj);
SchemaInfoList *schema = NULL;
/* test_visitor_in_qmp_introspect() ensures this can't fail */
visit_type_SchemaInfoList(v, NULL, &schema, &error_abort);
g_assert(schema);
qobject_unref(obj);
visit_free(v);
if (compat_policy.deprecated_output == COMPAT_POLICY_OUTPUT_HIDE) {
return zap_deprecated(schema);
}
return schema;
}
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