| gethostid, sethostid(3) | get/set unique identifier of current host |
| sethostid, gethostid(3) | get/set unique identifier of current host |
| GETHOSTID(3) | MidnightBSD Library Functions Manual | GETHOSTID(3) |
gethostid,
sethostid — get/set unique
identifier of current host
Standard C Library (libc, -lc)
#include
<unistd.h>
long
gethostid(void);
void
sethostid(long
hostid);
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 super-user and is normally performed at boot time.
The
gethostid()
function 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).
The gethostid() and
sethostid() syscalls appeared in
4.2BSD and were dropped in
4.4BSD.
32 bits for the identifier is too small.
| June 2, 1993 | midnightbsd-3.1 |