sd_machine_get_class() may be used to determine the class of a
locally running virtual machine or container that is registered
with systemd-machined.service(8). The string returned is either
"vm" or "container". The returned string needs to be freed with
the libc free(3) call after use.
sd_machine_get_ifindices() may be used to determine the numeric
indices of the network interfaces on the host that are pointing
towards the specified locally running virtual machine or
container. The vm or container must be registered with
systemd-machined.service(8). The output parameter ret_ifindices
may be passed as NULL when the output value is not needed. The
returned array needs to be freed with the libc free(3) call after
On success, these functions return a non-negative integer.
sd_machine_get_ifindices() returns the number of the relevant
network interfaces. On failure, these calls return a negative
errno-style error code.
Returned errors may indicate the following problems:
The specified machine does not exist or is currently not
An input parameter was invalid (out of range, or NULL, where
that is not accepted).
Memory allocation failed.
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
This page was obtained from the project's upstream Git repository
⟨https://github.com/systemd/systemd.git⟩ on 2021-08-27. (At that
time, the date of the most recent commit that was found in the
repository was 2021-08-27.) If you discover any rendering
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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
systemd 249 SD_MACHINE_GET_CLASS(3)