NAME
gethostid,
sethostid —
get/set unique identifier of current
host
LIBRARY
library “libc”
SYNOPSIS
#include
<unistd.h>
long
gethostid(void);
int
sethostid(long
hostid);
DESCRIPTION
sethostid()
establishes a 32-bit identifier for the current processor that is intended to
be unique among all UNIX systems in existence. This is
normally an Internet address for the local machine. This call is allowed only
to the super-user 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 ALSO
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.