1 .\" Hey Emacs! This file is -*- nroff -*- source.
3 .\" Copyright 1993 Rickard E. Faith (faith@cs.unc.edu)
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25 .\" Modified 1997-08-25 by Nicolas Lichtmaier <nick@debian.org>
26 .\" Modified 2004-06-17 by Michael Kerrisk <mtk.manpages@gmail.com>
27 .\" Modified 2008-11-27 by mtk
29 .\" Japanese Version Copyright (c) 1997 SUTO, Mitsuaki
30 .\" all rights reserved.
31 .\" Translated 1997-06-27, SUTO, Mitsuaki <suto@av.crl.sony.co.jp>
32 .\" Updated 2000-10-03, Yuichi SATO <sato@complex.eng.hokudai.ac.jp>
33 .\" Updated & Modified 2004-12-29, Yuichi SATO <ysato444@yahoo.co.jp>
34 .\" Updated 2008-12-26, Akihiro MOTOKI <amotoki@dd.iij4u.or.jp>, LDP v3.15
36 .TH GETDOMAINNAME 2 2009-09-27 "Linux" "Linux Programmer's Manual"
39 .\"O getdomainname, setdomainname \- get/set domain name
40 getdomainname, setdomainname \- ドメイン名の取得・設定をする
43 .B #include <unistd.h>
45 .BI "int getdomainname(char *" name ", size_t " len );
47 .BI "int setdomainname(const char *" name ", size_t " len );
50 .\"O Feature Test Macro Requirements for glibc (see
51 .\"O .BR feature_test_macros (7)):
53 .RB ( feature_test_macros (7)
61 _BSD_SOURCE || (_XOPEN_SOURCE && _XOPEN_SOURCE\ <\ 500)
66 .\"O These functions are used to access or to change the domain name of the
68 これらの関数は、ホストシステムのドメイン名を取得・変更するために使われる。
70 .\"O .BR setdomainname ()
71 .\"O sets the domain name to the value given in the character array
75 .\"O argument specifies the number of bytes in
79 .\"O does not require a terminating null byte.)
91 では文字列終端の NULL バイトは必要ない)。
93 .\"O .BR getdomainname ()
94 .\"O returns the null-terminated domain name in the character array
96 .\"O which has a length of
99 .\"O If the null-terminated domain name requires more than \fIlen\fP bytes,
100 .\"O .BR getdomainname ()
101 .\"O returns the first \fIlen\fP bytes (glibc) or gives an error (libc).
108 NULL 終端されたドメイン名が \fIlen\fP バイトより長い場合、
110 は、(glibc では) 始めの \fIlen\fP バイトを返し、(libc では) エラーとなる。
111 .\"O .SH "RETURN VALUE"
113 .\"O On success, zero is returned.
114 .\"O On error, \-1 is returned, and
116 .\"O is set appropriately.
117 成功した場合 0 が返る。失敗した場合 \-1 が返り、
122 .\"O .BR setdomainname ()
123 .\"O can fail with the following errors:
129 .\"O pointed outside of user address space.
135 .\"O was negative or too large.
140 .\"O the caller is unprivileged (Linux: does not have the
141 .\"O .B CAP_SYS_ADMIN
147 ケーパビリティ (capability) がない)。
149 .\"O .BR getdomainname ()
150 .\"O can fail with the following errors:
156 .\"O .BR getdomainname ()
171 .\"O .SH "CONFORMING TO"
173 .\"O POSIX does not specify these calls.
174 .\"O .\" But they appear on most systems...
175 POSIX では、これら関数は定義されていない。
176 .\" しかし、ほとんどのシステムにある...
179 .\"O Since Linux 1.0, the limit on the length of a domain name,
180 .\"O including the terminating null byte, is 64 bytes.
181 .\"O In older kernels, it was 8 bytes.
182 Linux 1.0 以降では、ドメイン名の長さの上限は
183 終端の NULL バイトを含めて 64 バイトである。
184 もっと古いカーネルでは 8 バイトであった。
186 .\"O On most Linux architectures (including x86),
188 .\"O .BR getdomainname ()
189 .\"O system call; instead, glibc implements
190 .\"O .BR getdomainname ()
191 .\"O as a library function that returns a copy of the
193 .\"O field returned from a call to
195 (x86 を含む) Linux のほとんどのアーキテクチャでは、
200 がライブラリ関数として実装されており、この関数は