NAME

       sd_bus_set_description, sd_bus_get_description, sd_bus_set_anonymous, sd_bus_set_trusted,
       sd_bus_set_allow_interactive_authorization, sd_bus_get_allow_interactive_authorization - Set or query
       properties of a bus object

SYNOPSIS

       #include <systemd/sd-bus.h>

       int sd_bus_set_description(sd_bus *bus, const char *description);

       int sd_bus_get_description(sd_bus *bus, const char **description);

       int sd_bus_set_anonymous(sd_bus *bus, int b);

       int sd_bus_set_trusted(sd_bus *bus, int b);

       int sd_bus_set_allow_interactive_authorization(sd_bus *bus, int b);

       int sd_bus_get_allow_interactive_authorization(sd_bus *bus);

DESCRIPTION

       sd_bus_set_description() sets the description string that is used in logging to the specified string. The
       string is copied internally and freed when the bus object is deallocated. The description argument may be
       NULL, in which case the description is unset. This function must be called before the bus has been
       started.

       sd_bus_get_description() returns a description string in description. This string may have been
       previously set with sd_bus_set_description() or sd_bus_open_with_description(3) or similar. If not set
       this way, a default string like "system" or "user" will be returned for the system or user buses, and
       NULL otherwise.

       sd_bus_set_anonymous() enables or disables "anonymous authentication", i.e. lack of authentication, of
       the bus peer. This function must be called before the bus has been started. See the Authentication
       Mechanisms[1] section of the D-Bus specification for details.

       sd_bus_set_trusted() sets the "trusted" state on the bus object. If true, all connections on the bus are
       trusted and access to all privileged and unprivileged methods is granted. This function must be called
       before the bus has been started.

       sd_bus_set_allow_interactive_authorization() enables or disables interactive authorization for method
       calls. If true, messages are marked with the ALLOW_INTERACTIVE_AUTHORIZATION flag specified by the
       D-Bus[2] specification, informing the receiving side that the caller is prepared to wait for interactive
       authorization, which might take a considerable time to complete. If this flag is set, the user may be
       queried for passwords or confirmation via polkit[3] or a similar framework.

       sd_bus_get_allow_interactive_authorization() returns true if interactive authorization is allowed and
       false if not.

RETURN VALUE

       On success, these functions return 0 or a positive integer. On failure, they return a negative
       errno-style error code.

   Errors
       Returned errors may indicate the following problems:

       -EINVAL
           An argument is invalid.

       -ENOPKG
           The bus cannot be resolved.

       -EPERM
           The bus has already been started.

       -ECHILD
           The bus was created in a different process.

       -ENOMEM
           Memory allocation failed.

NOTES

       These APIs are implemented as a shared library, which can be compiled and linked to with the
       libsystemd pkg-config(1) file.

SEE ALSO

       systemd(1), sd-bus(3), sd_bus_default_user(3), sd_bus_default_system(3), sd_bus_open_user(3),
       sd_bus_open_system(3)

NOTES

        1. Authentication Mechanisms
           view-source:https://dbus.freedesktop.org/doc/dbus-specification.html#auth-mechanisms

        2. D-Bus
           view-source:https://dbus.freedesktop.org/doc/dbus-specification.html

        3. polkit
           http://www.freedesktop.org/wiki/Software/polkit