sd_bus_message_at_end - Man Page

Check if a message has been fully read

Synopsis

#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​.

Added in version 246​.

-EPERM

The message is not sealed​.

Added in version 246​.

Notes

Functions described here are available as a shared library, which can be compiled against and linked to with the libsystemd ​pkg-config(1) file​.

All functions listed here are thread-agnostic and only a single thread may operate on a given object at any given time​. Different threads may access the same object at different times​. Multiple independent objects may be used from different threads in parallel​.

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​.

History

sd_bus_message_at_end() was added in version 246​.

See Also

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

Referenced By

sd-bus(3), systemd.directives(7), systemd.index(7).

systemd 262~rc2