qemu/qom/qom-hmp-cmds.c

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/*
* HMP commands related to QOM
*
* This work is licensed under the terms of the GNU GPL, version 2 or
* later. See the COPYING file in the top-level directory.
*/
#include "qemu/osdep.h"
#include "hw/qdev-core.h"
#include "monitor/hmp.h"
#include "monitor/monitor.h"
#include "qapi/error.h"
#include "qapi/qapi-commands-qom.h"
#include "qapi/qmp/qdict.h"
#include "qapi/qmp/qjson.h"
#include "qemu/readline.h"
#include "qom/object.h"
#include "qom/object_interfaces.h"
void hmp_qom_list(Monitor *mon, const QDict *qdict)
{
const char *path = qdict_get_try_str(qdict, "path");
ObjectPropertyInfoList *list;
Error *err = NULL;
if (path == NULL) {
monitor_printf(mon, "/\n");
return;
}
list = qmp_qom_list(path, &err);
if (err == NULL) {
ObjectPropertyInfoList *start = list;
while (list != NULL) {
ObjectPropertyInfo *value = list->value;
monitor_printf(mon, "%s (%s)\n",
value->name, value->type);
list = list->next;
}
qapi_free_ObjectPropertyInfoList(start);
}
hmp_handle_error(mon, err);
}
void hmp_qom_set(Monitor *mon, const QDict *qdict)
{
const bool json = qdict_get_try_bool(qdict, "json", false);
const char *path = qdict_get_str(qdict, "path");
const char *property = qdict_get_str(qdict, "property");
const char *value = qdict_get_str(qdict, "value");
Error *err = NULL;
if (!json) {
Object *obj = object_resolve_path(path, NULL);
if (!obj) {
error_set(&err, ERROR_CLASS_DEVICE_NOT_FOUND,
"Device '%s' not found", path);
} else {
qom: Put name parameter before value / visitor parameter The object_property_set_FOO() setters take property name and value in an unusual order: void object_property_set_FOO(Object *obj, FOO_TYPE value, const char *name, Error **errp) Having to pass value before name feels grating. Swap them. Same for object_property_set(), object_property_get(), and object_property_parse(). Convert callers with this Coccinelle script: @@ identifier fun = { object_property_get, object_property_parse, object_property_set_str, object_property_set_link, object_property_set_bool, object_property_set_int, object_property_set_uint, object_property_set, object_property_set_qobject }; expression obj, v, name, errp; @@ - fun(obj, v, name, errp) + fun(obj, name, v, errp) Chokes on hw/arm/musicpal.c's lcd_refresh() with the unhelpful error message "no position information". Convert that one manually. Fails to convert hw/arm/armsse.c, because Coccinelle gets confused by ARMSSE being used both as typedef and function-like macro there. Convert manually. Fails to convert hw/rx/rx-gdbsim.c, because Coccinelle gets confused by RXCPU being used both as typedef and function-like macro there. Convert manually. The other files using RXCPU that way don't need conversion. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> Message-Id: <20200707160613.848843-27-armbru@redhat.com> [Straightforwad conflict with commit 2336172d9b "audio: set default value for pcspk.iobase property" resolved]
2020-07-07 19:05:54 +03:00
object_property_parse(obj, property, value, &err);
}
} else {
QObject *obj = qobject_from_json(value, &err);
if (!err) {
qmp_qom_set(path, property, obj, &err);
}
}
hmp_handle_error(mon, err);
}
void hmp_qom_get(Monitor *mon, const QDict *qdict)
{
const char *path = qdict_get_str(qdict, "path");
const char *property = qdict_get_str(qdict, "property");
Error *err = NULL;
QObject *obj = qmp_qom_get(path, property, &err);
if (err == NULL) {
GString *str = qobject_to_json_pretty(obj, true);
monitor_printf(mon, "%s\n", str->str);
g_string_free(str, true);
}
qobject_unref(obj);
hmp_handle_error(mon, err);
}
typedef struct QOMCompositionState {
Monitor *mon;
int indent;
} QOMCompositionState;
static void print_qom_composition(Monitor *mon, Object *obj, int indent);
static int qom_composition_compare(const void *a, const void *b)
{
return g_strcmp0(object_get_canonical_path_component(*(Object **)a),
object_get_canonical_path_component(*(Object **)b));
}
static int insert_qom_composition_child(Object *obj, void *opaque)
{
g_array_append_val(opaque, obj);
return 0;
}
static void print_qom_composition(Monitor *mon, Object *obj, int indent)
{
GArray *children = g_array_new(false, false, sizeof(Object *));
const char *name;
int i;
if (obj == object_get_root()) {
name = "";
} else {
name = object_get_canonical_path_component(obj);
}
monitor_printf(mon, "%*s/%s (%s)\n", indent, "", name,
object_get_typename(obj));
object_child_foreach(obj, insert_qom_composition_child, children);
g_array_sort(children, qom_composition_compare);
for (i = 0; i < children->len; i++) {
print_qom_composition(mon, g_array_index(children, Object *, i),
indent + 2);
}
g_array_free(children, TRUE);
}
void hmp_info_qom_tree(Monitor *mon, const QDict *dict)
{
const char *path = qdict_get_try_str(dict, "path");
Object *obj;
bool ambiguous = false;
if (path) {
obj = object_resolve_path(path, &ambiguous);
if (!obj) {
monitor_printf(mon, "Path '%s' could not be resolved.\n", path);
return;
}
if (ambiguous) {
monitor_printf(mon, "Warning: Path '%s' is ambiguous.\n", path);
return;
}
} else {
obj = qdev_get_machine();
}
print_qom_composition(mon, obj, 0);
}
void hmp_object_add(Monitor *mon, const QDict *qdict)
{
const char *options = qdict_get_str(qdict, "object");
Error *err = NULL;
user_creatable_add_from_str(options, &err);
hmp_handle_error(mon, err);
}
void hmp_object_del(Monitor *mon, const QDict *qdict)
{
const char *id = qdict_get_str(qdict, "id");
Error *err = NULL;
user_creatable_del(id, &err);
hmp_handle_error(mon, err);
}
void object_add_completion(ReadLineState *rs, int nb_args, const char *str)
{
GSList *list, *elt;
size_t len;
if (nb_args != 2) {
return;
}
len = strlen(str);
readline_set_completion_index(rs, len);
list = elt = object_class_get_list(TYPE_USER_CREATABLE, false);
while (elt) {
const char *name;
name = object_class_get_name(OBJECT_CLASS(elt->data));
if (strcmp(name, TYPE_USER_CREATABLE)) {
readline_add_completion_of(rs, str, name);
}
elt = elt->next;
}
g_slist_free(list);
}
void object_del_completion(ReadLineState *rs, int nb_args, const char *str)
{
ObjectPropertyInfoList *list, *start;
size_t len;
if (nb_args != 2) {
return;
}
len = strlen(str);
readline_set_completion_index(rs, len);
start = list = qmp_qom_list("/objects", NULL);
while (list) {
ObjectPropertyInfo *info = list->value;
if (!strncmp(info->type, "child<", 5)) {
readline_add_completion_of(rs, str, info->name);
}
list = list->next;
}
qapi_free_ObjectPropertyInfoList(start);
}