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macOS Get the host name via C/C++ at kernel level

I'm sure there's a few ways...

getenv("$HOSTNAME");

might be one way.

char myhost[20];
gethostname(&myhost, sizeof(myhost));

is another...

There may be some more Mac specific API calls to do this as well...
 
Are you sure these can be called from kernel level? When I try it they are not found.
 
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