x SuSE Linux 13.1-RELEASE x
x SuSE Linux 13.1-RELEASEx
SD_BUS_ADD_OBJECT_MANAGER(3sd_bus_add_object_managSD_BUS_ADD_OBJECT_MANAGER(3)
NAME
sd_bus_add_object_manager - Add a D-Bus object manager for a D-Bus
object sub-tree
SYNOPSIS
#include <systemd/sd-bus.h>
int sd_bus_add_object_manager(sd_bus *bus, sd_bus_slot **slot,
const char *path);
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[1] for more information.
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).
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, library or module
instance.
-ENOMEM
Memory allocation failed.
NOTES
Functions described here are available as a shared library, which can
be compiled against and linked to with the libsystemd pkg-config(1)
file.
The code described here uses getenv(3), which is declared to be not
multi-thread-safe. This means that the code calling the functions
described here must not call setenv(3) from a parallel thread. It is
recommended to only do calls to setenv() from an early phase of the
program when no other threads have been started.
SEE ALSO
sd-bus(3), busctl(1), sd_bus_add_object_vtable(3),
sd_bus_emit_interfaces_added(3), sd_bus_slot_unref(3)
NOTES
1. org.freedesktop.DBus.ObjectManager
https://dbus.freedesktop.org/doc/dbus-specification.html#standard-interfaces-objectmanager
systemd 254 SD_BUS_ADD_OBJECT_MANAGER(3)
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