1 .\" Copyright (c) 1998 Thorsten Kukuk (kukuk@vt.uni-paderborn.de)
3 .\" This is free documentation; you can redistribute it and/or
4 .\" modify it under the terms of the GNU General Public License as
5 .\" published by the Free Software Foundation; either version 2 of
6 .\" the License, or (at your option) any later version.
8 .\" The GNU General Public License's references to "object code"
9 .\" and "executables" are to be interpreted as the output of any
10 .\" document formatting or typesetting system, including
11 .\" intermediate and printed output.
13 .\" This manual is distributed in the hope that it will be useful,
14 .\" but WITHOUT ANY WARRANTY; without even the implied warranty of
15 .\" MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 .\" GNU General Public License for more details.
18 .\" You should have received a copy of the GNU General Public
19 .\" License along with this manual; if not, write to the Free
20 .\" Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139,
23 .\" This manual page based on the GNU C Library info pages.
24 .\" FIXME ? The use of quotes on this page is inconsistent with the
25 .\" rest of man-pages.
27 .\" Japanese Version Copyright (c) 1998 NAKANO Takeo all rights reserved.
28 .\" Translated Wed Apr 29 1998 by NAKANO Takeo <nakano@apm.seikei.ac.jp>
29 .\" Updated & Modified Sat Aug 21 1999
30 .\" by NAKANO Takeo <nakano@apm.seikei.ac.jp>
31 .\" Updated Fri Oct 12 JST 2001 by Akihiro MOTOKI <amotoki@dd.iij4u.or.jp>
33 .\" WORD: lookup ±ÜÍ÷(¤¹¤ë)
35 .TH NSSWITCH.CONF 5 1999-01-17 "Linux" "Linux Programmer's Manual"
37 nsswitch.conf \- ¥·¥¹¥Æ¥à¥Ç¡¼¥¿¥Ù¡¼¥¹¤È¥Í¡¼¥à¥µ¡¼¥Ó¥¹¥¹¥¤¥Ã¥Á¤ÎÀßÄê¥Õ¥¡¥¤¥ë
39 C ¥é¥¤¥Ö¥é¥ê¤Îµ¡Ç½¤ÎÃæ¤Ë¤Ï¡¢¥í¡¼¥«¥ë¤Ê´Ä¶¤ÇÀµ¤·¤¯Æ°ºî¤µ¤»¤ë¤Ë¤ÏÀßÄ꤬
40 ɬÍפʤâ¤Î¤¬Â¿¿ô¸ºß¤¹¤ë¡£ÅÁÅýŪ¤Ë¤³¤ì¤Ï¥Õ¥¡¥¤¥ë (Î㤨¤Ð \fI/etc/passwd\fP) ¤ò
41 ÍѤ¤¤ë¤³¤È¤Ç¼Â¸½¤µ¤ì¤Æ¤¤¿¡£¤·¤«¤·Â¾¤Î¥Í¡¼¥à¥µ¡¼¥Ó¥¹ (Network
42 Information Service (NIS) ¤ä Domain Name Service (DNS)) ¤¬°ìÈÌŪ¤Ë¤Ê¤ê¡¢
43 ¤³¤ì¤é¤¬ C ¥é¥¤¥Ö¥é¥ê¤Ë¼è¤ê¹þ¤Þ¤ì¤ë¤è¤¦¤Ë¤Ê¤Ã¤Æ¤¤¤Ã¤¿¡£¤¿¤À¤·Ä̾¸¡
44 º÷¤Î½ç½ø¤Ï¸ÇÄꤵ¤ì¤Æ¤¤¤¿¡£
46 NYS ¤ò¥µ¥Ý¡¼¥È¤·¤¿ Linux libc5 ¤ä GNU C Linrary 2.x (libc.so.6) ¤Ç¤Ï¡¢
47 ¤³¤ÎÌäÂê¤Ï¤è¤ê¸«Ä̤·Îɤ¯²ò·è¤Ç¤¤ë¤è¤¦¤Ë¤Ê¤Ã¤Æ¤¤¤ë¡£¤³¤ì¤é¤Ï Sun
48 Microsystems ¤¬ Solaris 2 ¤Î C ¥é¥¤¥Ö¥é¥ê¤ÇÍѤ¤¤¿ÊýË¡¤Ë¤Ê¤é¤Ã¤Æ¤¤¤ë¡£
49 °Ê²¼¤Ç¤Ï¤³¤Î»ÅÁȤߤò "Name Service Switch" (NSS) ¤È¸Æ¤Ö¡£¥Ç¡¼¥¿¥Ù¡¼¥¹
50 ¤Î¾ðÊ󸻤ȡ¢¤½¤ì¤é¤ò±ÜÍ÷¤¹¤ë½ç½ø¤ò»ØÄꤷ¤¿¤Î¤¬
54 NSS(¥Í¡¼¥à¥µ¡¼¥Ó¥¹¥¹¥£¥Ã¥Á) ¤Ç¤Ï°Ê²¼¤Î¥Ç¡¼¥¿¥Ù¡¼¥¹¤ò°·¤¦¤³¤È¤¬¤Ç¤¤ë¡£
58 ¤ÇÍѤ¤¤é¤ì¤ë¥á¡¼¥ë¥¨¥¤¥ê¥¢¥¹¡£
67 ´Ø¿ô¤Ë¤è¤Ã¤ÆÍѤ¤¤é¤ì¤ë¡£
70 ¥Û¥¹¥È̾¤È¥Û¥¹¥ÈÈֹ档
72 ¤Ê¤É¤Î´Ø¿ô¤Ë¤è¤Ã¤ÆÍѤ¤¤é¤ì¤ë¡£
75 ¥Í¥Ã¥È¥ï¡¼¥¯¥ï¥¤¥É¤ËÍѤ¤¤é¤ì¤ë¥Û¥¹¥È¤ä¥æ¡¼¥¶¡¼¤Î¥ê¥¹¥È¡£¥¢¥¯¥»¥¹À©¸Â¤Ë
76 ÍøÍѤµ¤ì¤ë¡£ glibc 2.1 °ÊÁ°¤Î C ¥é¥¤¥Ö¥é¥ê¤Ï¡¢ NIS ¾å¤Ç¤À¤±
77 netgroup ¤ò¥µ¥Ý¡¼¥È¤·¤Æ¤¤¤ë¡£
80 ¥Í¥Ã¥È¥ï¡¼¥¯Ì¾¤ÈÈֹ档
82 ´Ø¿ô¤Ë¤è¤Ã¤ÆÍѤ¤¤é¤ì¤ë¡£
87 ´Ø¿ô¤Ë¤è¤Ã¤ÆÍѤ¤¤é¤ì¤ë¡£
90 ¥Í¥Ã¥È¥ï¡¼¥¯¥×¥í¥È¥³¥ë¡£
92 ´Ø¿ô¤Ë¤è¤Ã¤ÆÍѤ¤¤é¤ì¤ë¡£
95 NIS+ ¤È NFS ¤Ë¤è¤Ã¤ÆÍѤ¤¤é¤ì¤ë secure_rpc ¤Î¸ø³«¸°¤ÈÈëÌ©¸°¡£
98 ¥ê¥â¡¼¥È¥×¥í¥·¥¸¥ã¡¼¥³¡¼¥ë (remote procedure call) ¤Î̾Á°¤ÈÈֹ档
100 ¤Ê¤É¤Î´Ø¿ô¤Ë¤è¤Ã¤ÆÍѤ¤¤é¤ì¤ë¡£
103 ¥Í¥Ã¥È¥ï¡¼¥¯¥µ¡¼¥Ó¥¹¡£
105 ´Ø¿ô¤Ë¤è¤Ã¤ÆÍѤ¤¤é¤ì¤ë¡£
108 ¥·¥ã¥É¥¦¥æ¡¼¥¶¡¼¥Ñ¥¹¥ï¡¼¥É¡£
112 .I /etc/nsswitch.conf
113 ¥Õ¥¡¥¤¥ë¤Î°ìÎã¤ò°Ê²¼¤Ë¼¨¤¹ (¤³¤³¤Ë¼¨¤¹ÆâÍƤÏ
114 .I /etc/nsswitch.conf
115 ¥Õ¥¡¥¤¥ë¤¬¤Ê¤¤¾ì¹ç¤Î¥Ç¥Õ¥©¥ë¥È¤ÈƱ¤¸¤Ç¤¢¤ë)¡£
130 dns [!UNAVAIL=return] files
133 nis [NOTFOUND=return] files
136 nis [NOTFOUND=return] files
139 nis [NOTFOUND=return] files
142 nis [NOTFOUND=return] files
145 nis [NOTFOUND=return] files
148 ºÇ½é¤Î¥«¥é¥à¤Ï¥Ç¡¼¥¿¥Ù¡¼¥¹Ì¾¤Ç¤¢¤ë¡£
149 ¹Ô¤Î»Ä¤ê¤Ç¤Ï±ÜÍ÷¥×¥í¥»¥¹¤ÎÆ°ºî¤ò»ØÄꤷ¤Æ¤¤¤ë¡£
150 ¤½¤ì¤¾¤ì¤Î¥Ç¡¼¥¿¥Ù¡¼¥¹¤ËÂФ·¤Æ¡¢±ÜÍ÷ÊýË¡¤ÏÆÈΩ¤ËÀßÄê¤Ç¤¤ë¡£
152 ³Æ¡¹¤Î¥Ç¡¼¥¿¥Ù¡¼¥¹¤ÎÀßÄê¤Ë¤Ï°Ê²¼¤Î 2 ¼ïÎà¤ÎÆâÍƤò»ØÄꤹ¤ë¤³¤È¤¬¤Ç¤¤ë¡£
155 * ¥µ¡¼¥Ó¥¹¤Î»ØÄê¡£ `files', `db', `nis' ¤Ê¤É¡£
157 * ±ÜÍ÷·ë²Ì¤ËÂФ¹¤ë¥ê¥¢¥¯¥·¥ç¥ó¡£ `[NOTFOUND=return]' ¤Ê¤É¡£
160 NYS µ¡Ç½¤òÁȤ߹þ¤ó¤À libc5 ¤Ç¤Ï¡¢»ØÄê¤Ç¤¤ë¥µ¡¼¥Ó¥¹¤Ï `files'¡¢ `nis'¡¢
161 `nisplus' ¤Î¤¤¤º¤ì¤«¤Ç¤¢¤ë¡£ hosts ¤ËÂФ·¤Æ¤Ï `dns' ¤â»ØÄê¤Ç¤¤ë¡£¤Þ¤¿
162 passwd ¤È group ¤ËÂФ·¤Æ¤Ï `compat' ¤â»ØÄê¤Ç¤¤ë¡£ shadow ¤Ë¤Ï
163 `compat' ¤Î»ØÄê¤Ï¤Ç¤¤Ê¤¤¡£
165 glibc ¤Ç¤Ï¡¢ÍøÍѤ·¤è¤¦¤È¤¹¤ë¥µ¡¼¥Ó¥¹ SERVICE ¤½¤ì¤¾¤ì¤ËÂФ·
167 .BI /lib/libnss_SERVICE.so. X
168 ¤È¤¤¤¦¥Õ¥¡¥¤¥ë¤¬É¬Íפˤʤ롣ɸ½àŪ¤Ê¥¤¥ó¥¹¥È¡¼¥ë¤Ç¤Ï `files'¡¢ `db'¡¢
169 `nis'¡¢ `nisplus' ¤¬ÍøÍѤǤ¤ë¤è¤¦¤Ë¤Ê¤Ã¤Æ¤¤¤ë¤³¤È¤¬Â¿¤¤¡£ hosts ¤ËÂÐ
170 ¤·¤Æ¤Ï `dns' ¤â»ØÄê¤Ç¤¡¢ passwd¡¢ group¡¢ shadow ¤ËÂФ·¤Æ¤Ï `compat'
172 ¤³¤ì¤é¤Î¥µ¡¼¥Ó¥¹¤Ï libc5+NYS ¤Î´Ä¶¤Ç¤ÏÍøÍѤǤ¤Ê¤¤¡£
175 ¤Ï¡¢ glibc 2.0 ÍѤʤé 1¡¢ glibc 2.1 ÍѤʤé 2 ¤Ç¤¢¤ë¡£
177 Æó¤Ä¤á¤Î»ØÄêÊýË¡¤Ï±ÜÍ÷¥×¥í¥»¥¹¤ò¤è¤ê¾ÜºÙ¤ËÀ©¸æ¤¹¤ë¤¿¤á¤Î¤â¤Î¤Ç¤¢¤ë¡£¥¢
178 ¥¯¥·¥ç¥ó»ØÄê (action item) ¤Ï¥µ¡¼¥Ó¥¹Ì¾¤Î´Ö¤Ë¡¢³Ñ¤«¤Ã¤³ [] ¤Ç³ç¤é¤ì¤Æ
179 µ½Ò¤µ¤ì¤ë¡£°ìÈÌŪ¤Ê½ñ¼°¤Ï°Ê²¼¤ÎÄ̤ꡣ
181 `[' ( `!'? STATUS `=' ACTION )+ `]'
187 STATUS => success | notfound | unavail | tryagain
189 ACTION => return | continue
193 ¥¡¼¥ï¡¼¥É¤ÎÂçʸ»ú¾®Ê¸»ú¤Ï¶èÊ̤µ¤ì¤Ê¤¤¡£ STATUS ¤ÎÃͤÏÆÃÄê¤Îµ¡Ç½¤ËÂФ·
194 ¤Æ±ÜÍ÷¤ò¹Ô¤Ã¤¿·ë²Ì¤Ç¤¢¤ë¡£¤½¤ì¤¾¤ì¤Î°ÕÌ£¤Ï°Ê²¼¤ÎÄ̤ꡣ
197 ¥¨¥é¡¼¤Ïµ¯¤³¤é¤º¡¢É¬Íפʥ¨¥ó¥È¥ê¤¬ÊÖ¤µ¤ì¤¿¡£¤³¤Î·ë²Ì¤ËÂФ¹¤ë¥Ç¥Õ¥©¥ë¥È
198 ¤Î¥¢¥¯¥·¥ç¥ó¤Ï `return' ¤Ç¤¢¤ë¡£
201 ±ÜÍ÷¥×¥í¥»¥¹¤ÏÀ®¸ù¤·¤¿¤¬¡¢É¬ÍפÊÃͤ¬¸«¤Ä¤«¤é¤Ê¤«¤Ã¤¿¡£¥Ç¥Õ¥©¥ë¥È¤Î
202 ¥¢¥¯¥·¥ç¥ó¤Ï `continue'¡£
205 ¥µ¡¼¥Ó¥¹¤¬¡Ê±Ê³Ū¤Ë¡ËÍøÍѤǤ¤Ê¤¤¡£É¬Íפʥե¡¥¤¥ë¤¬Â¸ºß¤·¤Ê¤¤¡¢DNS ¤Î
206 ¾ì¹ç¤Ë¤Ï¥µ¡¼¥Ð¤ËÂФ¹¤ëÌ䤤¹ç¤ï¤»¤¬µö²Ä¤µ¤ì¤Æ¤¤¤Ê¤¤¡¢¤Ê¤É¤¬¤¢¤ê¤¦¤ë¡£
207 ¥Ç¥Õ¥©¥ë¥È¤Î¥¢¥¯¥·¥ç¥ó¤Ï `continue'¡£
210 ¥µ¡¼¥Ó¥¹¤¬°ì»þŪ¤ËÍøÍѤǤ¤Ê¤¤¡£¥Õ¥¡¥¤¥ë¤¬¥í¥Ã¥¯¤µ¤ì¤Æ¤¤¤ë¡¢¥µ¡¼¥Ð¤ÎÀÜ
211 ³¿ô¤¬¥ê¥ß¥Ã¥È¤ò±Û¤¨¤Æ¤¤¤Æ¸½ºßÍøÍѤǤ¤Ê¤¤¡¢¤Ê¤É¤¬¹Í¤¨¤é¤ì¤ë¡£¥Ç¥Õ¥©¥ë
212 ¥È¤Î¥¢¥¯¥·¥ç¥ó¤Ï `continue'¡£
213 .SS +/\- ½ñ¼°¤È¤Î´Ø·¸ (compat ¥â¡¼¥É)
214 NYS µ¡Ç½¤òÁȤ߹þ¤ó¤Ç¤¤¤Ê¤¤ libc5 ¤Ï¡¢¥Í¡¼¥à¥µ¡¼¥Ó¥¹¥¹¥¤¥Ã¥Á¤Îµ¡Ç½¤ò»ý¤Ã
215 ¤Æ¤¤¤Ê¤¤¡£¤·¤«¤·¤¢¤ëÄøÅ٤Υݥꥷ¡¼À©¸æ¤Ï¹Ô¤¦¤³¤È¤¬¤Ç¤¤ë¡£
217 ¤Ç¤Ï +user ¤ä +@netgroup (NIS ¤Î passwd ¥Þ¥Ã¥×¤«¤é»ØÄꤷ¤¿¥æ¡¼¥¶¤ò¼è¤ê¹þ
218 ¤à)¡¢ \-user ¤ä \-@netgroup (»ØÄꤷ¤¿¥æ¡¼¥¶¤ò½ü³°¤¹¤ë)¡¢ + (NIS ¤Î
219 passwd ¥Þ¥Ã¥×¤«¤é¡¢½ü³°¤µ¤ì¤¿¥æ¡¼¥¶°Ê³°¤ÎÁ´¤Æ¤Î¥¨¥ó¥È¥ê¤ò¼è¤ê¹þ¤à) ¤Ê
220 ¤É¤ò»ØÄꤹ¤ë¤³¤È¤¬¤Ç¤¤ë¡£
223 ¤ÎºÇ¸å¤Ë + ¤òÉÕ¤±¤Æ NIS ¤Î¤¹¤Ù¤Æ¤ò¼è¤ê¹þ¤ó¤Ç¤¤¤ë¤À¤±¤Ê¤Î¤Ç¡¢
224 ¥Í¡¼¥à¥µ¡¼¥Ó¥¹¥¹¥¤¥Ã¥Á¤òÍѤ¤¤Æ
225 (`passwd: files nis') ¤Î¤è¤¦¤Ë¤¹¤ì¤Ð¤è¤ê¹â®¤ÊÆ°ºî¤¬´üÂԤǤ¡¢
227 .IR /etc/passwd ", " /etc/group ", " /etc/shadow
228 ¤Ë + ¤À¤±¤Î¥¨¥ó¥È¥ê¤ò½ñ¤«¤Ê¤¯¤Æ¤¹¤à¡£
229 ¤è¤êºÙ¤«¤ÊÀ©¸æ¤ò¹Ô¤¤¤¿¤¤¾ì¹ç¤Ï¡¢ NSS ¤Î `compat' ¥µ¡¼¥Ó¥¹¤òÍѤ¤¤ì¤Ð
230 +/\- ½ñ¼°¤ò¥Õ¥ë¤ËÍѤ¤¤ë¤³¤È¤¬¤Ç¤¤ë¡£¥Ç¥Õ¥©¥ë¥È¤Ç¤Ï¥½¡¼¥¹¤Ï `nis' ¤Ë¤Ê¤Ã
231 ¤Æ¤¤¤ë¤¬¡¢¤³¤ì¤Ïµ¼»÷¥Ç¡¼¥¿¥Ù¡¼¥¹
232 .BR passwd_compat , group_compat , shadow_compat
233 ¤Ê¤É¤Ë `nisplus' ¤ò»ØÄꤹ¤ë¤³¤È¤Ç¾å½ñ¤¤Ç¤¤ë¡£
234 ¤³¤ì¤é¤Îµ¼»÷¥Ç¡¼¥¿¥Ù¡¼¥¹¤Ï GNU C ¥é¥¤¥Ö¥é¥ê¤Ç¤·¤«ÍøÍѤǤ¤Ê¤¤¡£
236 SERVICE ¤È¤¤¤¦Ì¾Á°¤Î¥µ¡¼¥Ó¥¹¤Ï libnss_SERVICE.so.1 ¤È¤¤¤¦Ì¾Á°¤Î¶¦Í¥ª
237 ¥Ö¥¸¥§¥¯¥È¥é¥¤¥Ö¥é¥ê¤Ç¼ÂÁõ¤µ¤ì¤Æ¤¤¤ë¡£¤³¤ì¤Ï /lib ¤ËÃÖ¤«¤ì¤ë¡£
240 .I /etc/nsswitch.conf
243 .BI /lib/libnss_compat.so. X
244 glibc2 ¤ËÂФ·¤Æ `compat' ¥½¡¼¥¹¤ò¼ÂÁõ¤·¤¿¤â¤Î¡£
246 .BI /lib/libnss_db.so. X
247 glibc2 ¤ËÂФ·¤Æ `db' ¥½¡¼¥¹¤ò¼ÂÁõ¤·¤¿¤â¤Î¡£
249 .BI /lib/libnss_dns.so. X
250 glibc2 ¤ËÂФ·¤Æ `dns' ¥½¡¼¥¹¤ò¼ÂÁõ¤·¤¿¤â¤Î¡£
252 .BI /lib/libnss_files.so. X
253 glibc2 ¤ËÂФ·¤Æ `files' ¥½¡¼¥¹¤ò¼ÂÁõ¤·¤¿¤â¤Î¡£
255 .BI /lib/libnss_hesoid.so. X
256 glibc2 ¤ËÂФ·¤Æ `hesoid' ¥½¡¼¥¹¤ò¼ÂÁõ¤·¤¿¤â¤Î¡£
258 .BI /lib/libnss_nis.so. X
259 glibc2 ¤ËÂФ·¤Æ `nis' ¥½¡¼¥¹¤ò¼ÂÁõ¤·¤¿¤â¤Î¡£
261 .BI /lib/libnss_nisplus.so. X
262 glibc2 ¤ËÂФ·¤Æ `nisplus' ¥½¡¼¥¹¤ò¼ÂÁõ¤·¤¿¤â¤Î¡£
264 .I /lib/libnss_nisplus.so.2
265 glibc 2.1 ¤ËÂФ·¤Æ `nisplus' ¥½¡¼¥¹¤ò¼ÂÁõ¤·¤¿¤â¤Î¡£
269 ¤òÍøÍѤ¹¤ë¤½¤ì¤¾¤ì¤Î¥×¥í¥»¥¹¤Ç¤Ï¡¢¥Õ¥¡¥¤¥ë¤Ï°ìÅÙ¤·¤«Æɤ߹þ¤Þ¤ì¤Ê¤¤¡£
270 ¤â¤· nsswitch.conf ¤¬¤¢¤È¤Ç½ñ¤´¹¤¨¤é¤ì¤Æ¤â¡¢
271 ¤½¤Î¥×¥í¥»¥¹¤Ï¸Å¤¤ÀßÄê¤Î¤Þ¤Þ¤ÇÆ°ºî¤ò·Ñ³¤¹¤ë¡£
273 Solaris ¤Ç¤Ï NSS ¥µ¡¼¥Ó¥¹¤òÍѤ¤¤¿¥×¥í¥°¥é¥à¤ò¥¹¥¿¥Æ¥£¥Ã¥¯¤Ë¥ê¥ó¥¯¤¹¤ë
274 ¤³¤È¤Ï¤Ç¤¤Ê¤¤¡£ Linux ¤Ç¤ÏÌäÂê¤Ê¤¯¥¹¥¿¥Æ¥£¥Ã¥¯¥ê¥ó¥¯¤Ç¤¤ë¡£