NAME

gethostid, sethostid − get/set unique identifier of current host

SYNOPSIS

hostid = gethostid()
long hostid;

sethostid(hostid)
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 a DARPA 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. 

NOTE

The primitives documented on this manual page are system calls, but unlike most system calls they are not resolved by libc.  To compile and link a program that makes these calls, follow the procedures for section (3B) routines as described in intro(3).

SEE ALSO

hostid(1), gethostname(2)

BUGS

32 bits for the identifier is too small. 

Version 2.5r1  —  October 29, 1986