|GETHOSTID(3)||FreeBSD Library Functions Manual||GETHOSTID(3)|
NAMEgethostid, sethostid — get/set unique identifier of current host
LIBRARYStandard C Library (libc, -lc)
SYNOPSIS#include < unistd.h>
sethostid( long hostid);
DESCRIPTIONThe sethostid() function establishes a 32-bit identifier for the current processor that is intended to be unique among all UNIX systems in existence. This is normally a DARPA Internet address for the local machine. This call is allowed only to the super-user and is normally performed at boot time.
The gethostid() function returns the 32-bit identifier for the current processor.
This function has been deprecated. The hostid should be set or retrieved by use of sysctl(3).
HISTORYThe gethostid() and sethostid() syscalls appeared in 4.2BSD and were dropped in 4.4BSD.
BUGS32 bits for the identifier is too small.
|June 2, 1993||FreeBSD|