|
NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | NOTES | SEE ALSO | NOTES | COLOPHON |
SD_BUS_ADD_OBJECT_MANAGER(3)_bus_add_object_managerBUS_ADD_OBJECT_MANAGER(3)
sd_bus_add_object_manager - Add a D-Bus object manager for a D-Bus
object sub-tree
#include <systemd/sd-bus.h>
int sd_bus_add_object_manager(sd_bus *bus, sd_bus_slot **slot,
const char *path);
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).
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.
These APIs are implemented as a shared library, which can be compiled
and linked to with the libsystemd pkg-config(1) file.
sd-bus(3), busctl(1), sd_bus_add_object_vtable(3),
sd_bus_emit_interfaces_added(3), sd_bus_slot_unref(3)
1. org.freedesktop.DBus.ObjectManager
https://dbus.freedesktop.org/doc/dbus-specification.html#standard-interfaces-objectmanager
This page is part of the systemd (systemd system and service manager)
project. Information about the project can be found at
⟨http://www.freedesktop.org/wiki/Software/systemd⟩. If you have a bug
report for this manual page, see
⟨http://www.freedesktop.org/wiki/Software/systemd/#bugreports⟩. This
page was obtained from the project's upstream Git repository
⟨https://github.com/systemd/systemd.git⟩ on 2020-08-13. (At that
time, the date of the most recent commit that was found in the repos‐
itory was 2020-08-11.) If you discover any rendering problems in
this HTML version of the page, or you believe there is a better or
more up-to-date source for the page, or you have corrections or
improvements to the information in this COLOPHON (which is not part
of the original manual page), send a mail to man-pages@man7.org
systemd 246 SD_BUS_ADD_OBJECT_MANAGER(3)
Pages that refer to this page: sd-bus(3) , sd_bus_emit_interfaces_added(3) , sd_bus_emit_interfaces_added_strv(3) , sd_bus_emit_interfaces_removed(3) , sd_bus_emit_interfaces_removed_strv(3) , sd_bus_emit_object_added(3) , sd_bus_emit_object_removed(3) , sd_bus_emit_properties_changed(3) , sd_bus_emit_properties_changed_strv(3) , sd_bus_emit_signal(3) , sd_bus_emit_signalv(3) , 30-systemd-environment-d-generator(7) , systemd.directives(7) , systemd.index(7)