sd_bus_message_at_end

systemd
sd_bus_message_at_end 3
sd_bus_message_at_end Check if a message has been fully read

    #include <systemd/sd-bus.h>

int `sd_bus_message_at_end` sd_bus_message *m int complete

## Description

`sd_bus_message_at_end()` returns whether all data from the currently opened container in m or all data from all containers in m has been read. If complete is zero, this function returns whether all data from the currently opened container has been read. If complete is non-zero, this function returns whether all data from all containers in m has been read.

## Return Value

If all data from all containers or the current container (depending on the value of complete) has been read, `sd_bus_message_at_end()` returns a positive integer. If there is still data left to be read, it returns zero. 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 is not sealed.

## See Also

systemd 1, sd-bus 3, sd_bus_message_read 3