NAME

       sd_bus_list_names - Retrieve information about registered names on a bus

SYNOPSIS

       #include <systemd/sd-bus.h>

       int sd_bus_list_names(sd_bus *bus, char ***acquired, char ***activatable);

DESCRIPTION

       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[1] to retrieve the list of
       currently-owned names on the bus. If acquired is not NULL, the function calls
       org.freedesktop.DBus.ListActivableNames[2] 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.

RETURN VALUE

       On success, sd_bus_list_names() returns a non-negative integer. On failure, it returns a
       negative errno-style error code.

   Errors
       Returned errors may indicate the following problems:

       -EINVAL
           bus or both acquired and activatable were NULL.

           Added in version 246.

       -ENOPKG
           The bus cannot be resolved.

           Added in version 246.

       -ECHILD
           The bus was created in a different process, library or module instance.

           Added in version 246.

       -ENOMEM
           Memory allocation failed.

           Added in version 246.

       -ENOTCONN
           The bus is not connected.

           Added in version 246.

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.

HISTORY

       sd_bus_list_names() was added in version 246.

SEE ALSO

       systemd(1), sd-bus(3)

NOTES

        1. org.freedesktop.DBus.ListNames
           https://dbus.freedesktop.org/doc/dbus-specification.html#bus-messages-list-names

        2. org.freedesktop.DBus.ListActivableNames
           https://dbus.freedesktop.org/doc/dbus-specification.html#bus-messages-list-activatable-names