Index · Directives systemd 246

Name

sd_bus_get_name_machine_id — Retrieve a bus client's machine identity

Synopsis

#include <systemd/sd-bus.h>
int sd_bus_get_name_machine_id(sd_bus *bus,
 const char *name,
 sd_id128_t *machine);
 

Description

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.

Return Value

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.

-ENOMEM

Memory allocation failed.

Notes

These APIs are implemented as a shared library, which can be compiled and linked to with the libsystemd pkg-config(1) file.

See Also

systemd(1), sd-bus(3)