GETHOSTID(3)            NetBSD Library Functions Manual           GETHOSTID(3)


NAME
gethostid, sethostid -- get/set unique identifier of current host
LIBRARY
Standard C Library (libc, -lc)
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 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. This function has been deprecated. The hostid should be set or retrieved by use of sysctl(3).
SEE ALSO
gethostname(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. NetBSD 8.1 June 2, 1993 NetBSD 8.1

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