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NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | NOTES | HISTORY | SEE ALSO | COLOPHON |
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SD_BUS_G...CHINE_ID(3) sd_bus_get_name_machine_id SD_BUS_G...CHINE_ID(3)
sd_bus_get_name_machine_id - Retrieve a bus client's machine
identity
#include <systemd/sd-bus.h>
int sd_bus_get_name_machine_id(sd_bus *bus, const char *name,
sd_id128_t *machine);
sd_bus_get_name_machine_id() retrieves the D-Bus machine identity
of the machine that the bus client identified by name is running
on. Internally, it calls the GetMachineId method of the
org.freedesktop.DBus.Peer interface. The D-Bus machine identity is
a 128-bit UUID. On Linux systems running systemd, this corresponds
to the contents of /etc/machine-id. On success, the machine
identity is stored in machine.
On success, this function returns a non-negative integer. On
failure, it returns a negative errno-style error code.
Errors
Returned errors may indicate the following problems:
-EINVAL
An argument is invalid.
-ENOPKG
The bus cannot be resolved.
-ECHILD
The bus was created in a different process, library or module
instance.
-ENOMEM
Memory allocation failed.
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_get_name_machine_id() was added in version 221.
systemd(1), sd-bus(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 2025-02-02. (At that
time, the date of the most recent commit that was found in the
repository was 2025-02-02.) 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~devel SD_BUS_G...CHINE_ID(3)
Pages that refer to this page: sd-bus(3), systemd.directives(7), systemd.index(7)
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HTML rendering created 2025-02-02 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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