Manpages - sd_bus_message_set_destination.3

sd_bus_message_set_destination, sd_bus_message_get_destination, sd_bus_message_get_path, sd_bus_message_get_interface, sd_bus_message_get_member, sd_bus_message_set_sender, sd_bus_message_get_sender - Set and query bus message addressing information

  #include <systemd/sd-bus.h>

int sd_bus_message_set_destination(sd_bus_message **/message/, const char */destination/);*

const char sd_bus_message_get_destination(sd_bus_message */message/);*

const char sd_bus_message_get_path(sd_bus_message */message/);*

const char sd_bus_message_get_interface(sd_bus_message */message/);*

const char sd_bus_message_get_member(sd_bus_message */message/);*

int sd_bus_message_set_sender(sd_bus_message **/message/, const char */sender/);*

const char sd_bus_message_get_sender(sd_bus_message */message/);*

sd_bus_message_set_destination() sets the destination service name for the specified bus message object. The specified name must be a valid unique or well-known service name.

sd_bus_message_get_destination(), sd_bus_message_get_path(), sd_bus_message_get_interface(), and sd_bus_message_get_member() return the destination, path, interface, and member fields from message header. The return value will be NULL is message is NULL or the message is of a type that doesnt use those fields or the message doesnt have them set. See *sd_bus_message_new_method_call*(3) and *sd_bus_message_set_destination*(3) for more discussion of those values.

sd_bus_message_set_sender() sets the sender service name for the specified bus message object. The specified name must be a valid unique or well-known service name. This function is useful only for messages to send on direct connections as for connections to bus brokers the broker will fill in the destination field anyway, and the sender field set by original sender is ignored.

sd_bus_message_get_sender() returns the sender field from message.

When a string is returned, it is a pointer to internal storage, and may not be modified or freed. It is only valid as long as the message remains referenced and this field hasnt been changed by a different call.

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

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

*systemd*(1), *sd-bus*(3), *sd_bus_new*(3), *sd_bus_set_sender*(3)