sd_bus_message_rewind

systemd

sd_bus_message_rewind

3

sd_bus_message_rewind

Return to beginning of message or current container

#include <systemd/sd-bus.h>

int

sd_bus_message_rewind

sd_bus_message *

m

int

complete

Description

sd_bus_message_rewind() moves the "read pointer" in the message m to either the beginning of the message (if complete is true) or to the beginning of the currently open container. If no container is open, complete has no effect.

Return Value

On success, this function returns 0 or a positive integer. The value is zero if the current container or whole message in case no container is open is empty, and positive otherwise. On failure, it returns a negative errno-style error code.

Errors

Returned errors may indicate the following problems:

-EINVAL
The m parameter is NULL.

-EPERM
The message m has not been sealed.

History

sd_bus_message_rewind() was added in version 240.

See Also

systemd(1), sd-bus(3), sd_bus_message_read(3)