systemd sd_bus_list_names 3 sd_bus_list_names Retrieve information about registered names on a bus #include <systemd/sd-bus.h> int sd_bus_list_names sd_bus *bus char ***acquired char ***activatable sd_bus_list_names() retrieves information about the registered names on a bus. If acquired is not NULL, this function calls org.freedesktop.DBus.ListNames to retrieve the list of currently-owned names on the bus. If acquired is not NULL, the function calls org.freedesktop.DBus.ListActivableNames to retrieve the list of all names on the bus that can be activated. Note that ownership of the arrays returned by sd_bus_list_names() in acquired and activatable is transferred to the caller and hence, the caller is responsible for freeing these arrays and their contents. On success, sd_bus_list_names() returns a non-negative integer. On failure, it returns a negative errno-style error code. Returned errors may indicate the following problems: -EINVAL bus or both acquired and activatable were NULL. -ENOPKG The bus cannot be resolved. -ECHILD The bus was created in a different process. -ENOMEM Memory allocation failed. -ENOTCONN The bus is not connected. systemd1, sd-bus3