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af359dea | 1 | .\" Copyright (c) 1983, 1991 The Regents of the University of California. |
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2 | .\" All rights reserved. |
3 | .\" | |
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4 | .\" Redistribution and use in source and binary forms, with or without |
5 | .\" modification, are permitted provided that the following conditions | |
6 | .\" are met: | |
7 | .\" 1. Redistributions of source code must retain the above copyright | |
8 | .\" notice, this list of conditions and the following disclaimer. | |
9 | .\" 2. Redistributions in binary form must reproduce the above copyright | |
10 | .\" notice, this list of conditions and the following disclaimer in the | |
11 | .\" documentation and/or other materials provided with the distribution. | |
12 | .\" 3. All advertising materials mentioning features or use of this software | |
13 | .\" must display the following acknowledgement: | |
14 | .\" This product includes software developed by the University of | |
15 | .\" California, Berkeley and its contributors. | |
16 | .\" 4. Neither the name of the University nor the names of its contributors | |
17 | .\" may be used to endorse or promote products derived from this software | |
18 | .\" without specific prior written permission. | |
19 | .\" | |
20 | .\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
21 | .\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
22 | .\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
23 | .\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
24 | .\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
25 | .\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
26 | .\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
27 | .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
28 | .\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
29 | .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
30 | .\" SUCH DAMAGE. | |
1c15e888 | 31 | .\" |
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32 | .\" @(#)gethostid.2 6.6 (Berkeley) 3/10/91 |
33 | .\" | |
34 | .Dd March 10, 1991 | |
35 | .Dt GETHOSTID 2 | |
36 | .Os BSD 4.2 | |
37 | .Sh NAME | |
38 | .Nm gethostid , | |
39 | .Nm sethostid | |
40 | .Nd get/set unique identifier of current host | |
41 | .Sh SYNOPSIS | |
42 | .Fd #include <unistd.h> | |
43 | .Ft long | |
44 | .Fn gethostid void | |
45 | .Ft int | |
46 | .Fn sethostid "long hostid" | |
47 | .Sh DESCRIPTION | |
48 | .Fn Sethostid | |
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49 | establishes a 32-bit identifier for the |
50 | current processor that is intended to be unique among all | |
51 | UNIX systems in existence. This is normally a DARPA Internet | |
52 | address for the local machine. This call is allowed only to the | |
53 | super-user and is normally performed at boot time. | |
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54 | .Pp |
55 | .Fn Gethostid | |
1c15e888 | 56 | returns the 32-bit identifier for the current processor. |
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57 | .Sh SEE ALSO |
58 | .Xr hostid 1 , | |
59 | .Xr gethostname 2 | |
60 | .Sh BUGS | |
1c15e888 | 61 | 32 bits for the identifier is too small. |
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62 | .Sh HISTORY |
63 | The | |
64 | .Nm | |
65 | function call appeared in | |
66 | .Bx 4.2 . |