sd_bus_message_at_end - Check if a message has been fully read

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.

sd_bus_message_at_end() was added in version 246.

sd_bus_message_at_end - Check if a message has been fully read

Functions described here are available as a shared library, which can be compiled against and linked to with the libsystemdpkg-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.

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. Added in version 246. -EPERM The message is not sealed. Added in version 246.

systemd(1), sd-bus(3), sd_bus_message_read(3) systemd 257.7 SD_BUS_MESSAGE_AT_END(3)