NAME

       sd_bus_message_sensitive - Mark a message object as containing sensitive data

SYNOPSIS

       #include <systemd/sd-bus.h>

       int sd_bus_message_sensitive(sd_bus_message *message);

DESCRIPTION

       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's 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.

RETURN VALUE

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

   Errors
       Returned errors may indicate the following problems:

       -EINVAL
           The message parameter is NULL.

           Added in version 245.

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.

       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_sensitive() was added in version 245.

SEE ALSO

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