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NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | NOTES | HISTORY | SEE ALSO | COLOPHON |
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SD_BUS_ME...SENSITIVE(3) sd_bus_message_sensitiveSD_BUS_ME...SENSITIVE(3)
sd_bus_message_sensitive - Mark a message object as containing
sensitive data
#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.
Errors
Returned errors may indicate the following problems:
-EINVAL
The message parameter is NULL.
Added in version 245.
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.
sd_bus_message_sensitive() was added in version 245.
systemd(1), sd-bus(3), sd_bus_message_new_method_call(3)
This page is part of the systemd (systemd system and service
manager) project. Information about the project can be found at
⟨http://www.freedesktop.org/wiki/Software/systemd⟩. If you have a
bug report for this manual page, see
⟨http://www.freedesktop.org/wiki/Software/systemd/#bugreports⟩.
This page was obtained from the project's upstream Git repository
⟨https://github.com/systemd/systemd.git⟩ on 2025-08-11. (At that
time, the date of the most recent commit that was found in the
repository was 2025-08-11.) If you discover any rendering
problems in this HTML version of the page, or you believe there is
a better or more up-to-date source for the page, or you have
corrections or improvements to the information in this COLOPHON
(which is not part of the original manual page), send a mail to
man-pages@man7.org
systemd 258~rc2 SD_BUS_ME...SENSITIVE(3)
Pages that refer to this page: sd-bus(3), sd_bus_add_object(3), systemd.directives(7), systemd.index(7)
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HTML rendering created 2025-09-06 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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