GETHOSTID(3) OpenBSD Programmer's Manual GETHOSTID(3)NAME
gethostid, sethostid - get/set unique identifier of current host
SYNOPSIS
#include <unistd.h>
long
gethostid(void);
int
sethostid(long hostid);
DESCRIPTION
The 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 superuser and is normally
performed at boot-time.
gethostid() 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).
SEE ALSOgethostname(3), sysctl(3), sysctl(8)HISTORY
The gethostid() and sethostid() syscalls appeared in 4.2BSD and were
dropped in 4.4BSD.
BUGS
32 bits for the identifier is too small.
OpenBSD 4.9 May 31, 2007 OpenBSD 4.9