sd_bus_message_sensitive - Man Page

#include <systemd/sd-bus​.h>

int sd_bus_message_sensitive(sd_bus_message *message);

sd_bus_message_sensitive() marks an allocated bus message as containing sensitive data​. This ensures that the message data is carefully removed from memory (specifically, overwritten with zero bytes) when released​. It is recommended to mark all incoming and outgoing messages like this that contain security credentials and similar data that should be dealt with carefully​. Note that it is not possible to unmark messages like this, it is a one way operation​. If a message is already marked sensitive and then marked sensitive a second time the message remains marked so and no further operation is executed​.

As a safety precaution all messages that are created as reply to messages that are marked sensitive are also implicitly marked so​.

On success, this functions return 0 or a positive integer​. On failure, it returns a negative errno-style error code​.

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​.

sd_bus_message_sensitive() was added in version 245​.

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