добавить диспетчер объектов D-Bus для поддерева объектов D-Bus (Add a D-Bus object manager for a D-Bus object sub-tree)
Имя (Name)
sd_bus_add_object_manager - Add a D-Bus object manager for a
D-Bus object sub-tree
Синопсис (Synopsis)
#include <systemd/sd-bus.h>
int sd_bus_add_object_manager(sd_bus *bus, sd_bus_slot **slot,
const char *path);
Описание (Description)
sd_bus_add_object_manager() installs a handler for the given path
that implements the GetManagedObjects() method of the
org.freedesktop.DBus.ObjectManager interface. See
org.freedesktop.DBus.ObjectManager
To implement the InterfacesAdded and InterfacesRemoved signals of
the org.freedesktop.DBus.ObjectManager interface, call
sd_bus_emit_interfaces_added(3) and
sd_bus_emit_interfaces_removed(3) whenever interfaces are added
or removed from the sub-tree, respectively.
When sd_bus_add_object_manager() succeeds, a slot is created
internally. If the output parameter slot is NULL, a "floating"
slot object is created, see sd_bus_slot_set_floating(3).
Otherwise, a pointer to the slot object is returned. In that
case, the reference to the slot object should be dropped when the
object manager is not needed anymore, see sd_bus_slot_unref(3).
Возвращаемое значение (Return value)
On success, sd_bus_add_object_manager() returns a non-negative
integer. On failure, it returns a negative errno-style error
code.
Errors
Returned errors may indicate the following problems:
-EINVAL
One of the required parameters is NULL or path is not a valid
object path.
-ENOPKG
The bus cannot be resolved.
-ECHILD
The bus was created in a different process.
-ENOMEM
Memory allocation failed.
Примечание (Note)
These APIs are implemented as a shared library, which can be
compiled and linked to with the libsystemd pkg-config(1) file.
Смотри также (See also)
sd-bus(3), busctl(1), sd_bus_add_object_vtable(3),
sd_bus_emit_interfaces_added(3), sd_bus_slot_unref(3)
Примечание (Note)
1. org.freedesktop.DBus.ObjectManager
https://dbus.freedesktop.org/doc/dbus-specification.html#standard-interfaces-objectmanager
