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.\" Hey Emacs! This file is -*- nroff -*- source.
.\"
.\" Copyright 1993 Rickard E. Faith (faith@cs.unc.edu)
.\"
.\" Permission is granted to make and distribute verbatim copies of this
.\" manual provided the copyright notice and this permission notice are
.\" preserved on all copies.
.\"
.\" Permission is granted to copy and distribute modified versions of this
.\" manual under the conditions for verbatim copying, provided that the
.\" entire resulting derived work is distributed under the terms of a
.\" permission notice identical to this one.
.\"
.\" Since the Linux kernel and libraries are constantly changing, this
.\" manual page may be incorrect or out-of-date. The author(s) assume no
.\" responsibility for errors or omissions, or for damages resulting from
.\" the use of the information contained herein. The author(s) may not
.\" have taken the same level of care in the production of this manual,
.\" which is licensed free of charge, as they might when working
.\" professionally.
.\"
.\" Formatted or processed versions of this manual, if unaccompanied by
.\" the source, must acknowledge the copyright and authors of this work.
.\"
.\" Updated with additions from Mitchum DSouza <m.dsouza@mrc-apu.cam.ac.uk>
.\" Portions Copyright 1993 Mitchum DSouza <m.dsouza@mrc-apu.cam.ac.uk>
.\"
.\" Modified Tue Oct 22 00:22:35 EDT 1996 by Eric S. Raymond <esr@thyrsus.com>
.\"
.\" (Previously this file is gethostid.2)
.\" Japanese Version Copyright (c) 1997 SUTO, Mitsuaki
.\" all rights reserved.
.\" Translated 1997-06-27, SUTO, Mitsuaki <suto@av.crl.sony.co.jp>
.\" Modified 1999-05-21, HANATAKA Shinya <hanataka@abyss.rim.or.jp>
.\"
.\" (Move to section 3 in LDP v3.16 since the interfaces are purely glibc)
.\" Updated 2009-01-16, Akihiro MOTOKI <amotoki@dd.iij4u.or.jp>, LDP v3.16
.\"
.TH GETHOSTID 3 2009-01-13 "Linux" "Linux Programmer's Manual"
.SH ̾
gethostid, sethostid \- ߤΥۥȤθͭμ̻Ҥ/ꤹ
.SH
.B #include <unistd.h>
.sp
.B long gethostid(void);
.br
.BI "int sethostid(long " hostid );
.sp
.in -4n
glibc εǽޥ
.RB ( feature_test_macros (7)
):
.in
.sp
.ad l
.BR sethostid ():
_BSD_SOURCE || (_XOPEN_SOURCE && _XOPEN_SOURCE\ <\ 500)
.ad b
.SH
.BR gethostid ()
.BR sethostid ()
ϡ줾졢ѤƤۥȤ˸ͭ 32 ӥåȤμ̻Ҥ
/Ԥ
32 ӥåȤμ̻Ҥϡ¸ߤƤƤ Unix ƥ
ͣˤʤ褦˷롣̾
.BR gethostbyname (3)
ˤ֤ޥ Internet ɥ쥹˻Ѥ졢
̤ϼ̻ҤꤹɬפϤʤ
.BR sethostid ()
ϥѡ桼ѤǤʤ
.SH ֤
.BR gethostid ()
ϡ
.BR sethostid ()
ˤäꤵ줿ѤƤۥȤ 32 ӥåȤμ̻Ҥ֤ͤ
ȡ
.BR sethostid ()
0 ֤
顼ξ硢\-1 ֤
.I errno
˥顼ͤꤹ롣
.SH 顼
.BR sethostid ()
ϰʲΥ顼ǼԤǽ롣
.TP
.B EACCES
ƤӽФۥ ID ¸Τ˻Ѥեؤ
ߵĤäƤʤä
.TP
.B EPERM
ƤӽФץμ¸ UID/GID б UID/GID ƱǤϤʤ
.SH
4.2BSD4.4BSD ǤϤδؿϤʤʤä
SVr4 ˤ
.BR gethostid ()
ϴޤޤƤ뤬
.BR sethostid ()
ϴޤޤƤʤ
POSIX.1-2001 Ǥϡ
.BR gethostid ()
ϵꤵƤ뤬
.BR sethostid ()
ϵꤵƤʤ
.SH
glibc μǤϡ
.I hostid
ϥե
.I /etc/hostid
¸
(С 2.2 glibc Ǥϡ
.I /var/adm/hostid
ѤƤ)
.\" libc5 used /etc/hostid; libc4 didn't have these functions
glibc μǤϡۥ ID ¸ե
ץǤʤä硢
.BR gethostid ()
.BR gethostname (2)
Ȥäƥۥ̾ꤷΥۥ̾
.BR gethostbyname_r (3)
ϤۥȤ IPv4 ɥ쥹ơ
IPv4 ɥ쥹ΥӥåؤԤä֤ͤ
.SH Х
̻ҤǰդǤ뤳Ȥݾڤ뤳ȤϤǤʤ
.SH Ϣ
.BR hostid (1),
.BR gethostbyname (3)
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