11556Srgrimes/*- 21556Srgrimes * Copyright (c) 1992 Keith Muller. 31556Srgrimes * Copyright (c) 1992, 1993 41556Srgrimes * The Regents of the University of California. All rights reserved. 51556Srgrimes * 61556Srgrimes * This code is derived from software contributed to Berkeley by 71556Srgrimes * Keith Muller of the University of California, San Diego. 81556Srgrimes * 91556Srgrimes * Redistribution and use in source and binary forms, with or without 101556Srgrimes * modification, are permitted provided that the following conditions 111556Srgrimes * are met: 121556Srgrimes * 1. Redistributions of source code must retain the above copyright 131556Srgrimes * notice, this list of conditions and the following disclaimer. 141556Srgrimes * 2. Redistributions in binary form must reproduce the above copyright 151556Srgrimes * notice, this list of conditions and the following disclaimer in the 161556Srgrimes * documentation and/or other materials provided with the distribution. 171556Srgrimes * 4. Neither the name of the University nor the names of its contributors 181556Srgrimes * may be used to endorse or promote products derived from this software 191556Srgrimes * without specific prior written permission. 201556Srgrimes * 211556Srgrimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 221556Srgrimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 231556Srgrimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 241556Srgrimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 251556Srgrimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 261556Srgrimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 271556Srgrimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 281556Srgrimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 291556Srgrimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 301556Srgrimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 311556Srgrimes * SUCH DAMAGE. 321556Srgrimes * 331556Srgrimes * @(#)cache.h 8.1 (Berkeley) 5/31/93 3450471Speter * $FreeBSD$ 351556Srgrimes */ 361556Srgrimes 371556Srgrimes/* 381556Srgrimes * Constants and data structures used to implement group and password file 391556Srgrimes * caches. Traditional passwd/group cache routines perform quite poorly with 401556Srgrimes * archives. The chances of hitting a valid lookup with an archive is quite a 41102230Strhodes * bit worse than with files already resident on the file system. These misses 4246684Skris * create a MAJOR performance cost. To address this problem, these routines 431556Srgrimes * cache both hits and misses. 441556Srgrimes * 451556Srgrimes * NOTE: name lengths must be as large as those stored in ANY PROTOCOL and 461556Srgrimes * as stored in the passwd and group files. CACHE SIZES MUST BE PRIME 471556Srgrimes */ 481556Srgrimes#define UNMLEN 32 /* >= user name found in any protocol */ 491556Srgrimes#define GNMLEN 32 /* >= group name found in any protocol */ 501556Srgrimes#define UID_SZ 317 /* size of user_name/uid cache */ 511556Srgrimes#define UNM_SZ 317 /* size of user_name/uid cache */ 521556Srgrimes#define GID_SZ 251 /* size of gid cache */ 531556Srgrimes#define GNM_SZ 317 /* size of group name cache */ 541556Srgrimes#define VALID 1 /* entry and name are valid */ 551556Srgrimes#define INVALID 2 /* entry valid, name NOT valid */ 561556Srgrimes 571556Srgrimes/* 581556Srgrimes * Node structures used in the user, group, uid, and gid caches. 591556Srgrimes */ 601556Srgrimes 611556Srgrimestypedef struct uidc { 621556Srgrimes int valid; /* is this a valid or a miss entry */ 631556Srgrimes char name[UNMLEN]; /* uid name */ 641556Srgrimes uid_t uid; /* cached uid */ 651556Srgrimes} UIDC; 661556Srgrimes 671556Srgrimestypedef struct gidc { 681556Srgrimes int valid; /* is this a valid or a miss entry */ 691556Srgrimes char name[GNMLEN]; /* gid name */ 701556Srgrimes gid_t gid; /* cached gid */ 711556Srgrimes} GIDC; 72