GETHOSTID(3) BSD Library Functions Manual GETHOSTID(3)NAME
gethostid, sethostid — get/set unique identifier of current host
Standard C Library (libc, -lc)
The sethostid() function establishes a 32-bit identifier for the current
processor that is intended to be unique among all UNIX systems in exis‐
tence. 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
The gethostid() function returns the 32-bit identifier for the current
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.
32 bits for the identifier is too small.
BSD June 2, 1993 BSD