pwcache.h revision 296373
175584Sru/* $NetBSD: pwcache.h,v 1.5 2003/11/10 08:51:51 wiz Exp $ */ 275584Sru/* $FreeBSD: releng/10.3/contrib/libc-pwcache/pwcache.h 241731 2012-10-19 12:44:22Z brooks $ */ 375584Sru 475584Sru/*- 5104862Sru * Copyright (c) 1992 Keith Muller. 675584Sru * Copyright (c) 1992, 1993 775584Sru * The Regents of the University of California. All rights reserved. 8151497Sru * 975584Sru * This code is derived from software contributed to Berkeley by 1075584Sru * Keith Muller of the University of California, San Diego. 1175584Sru * 12104862Sru * Redistribution and use in source and binary forms, with or without 1375584Sru * modification, are permitted provided that the following conditions 14151497Sru * are met: 15151497Sru * 1. Redistributions of source code must retain the above copyright 16104862Sru * notice, this list of conditions and the following disclaimer. 1775584Sru * 2. Redistributions in binary form must reproduce the above copyright 1875584Sru * notice, this list of conditions and the following disclaimer in the 1975584Sru * documentation and/or other materials provided with the distribution. 2075584Sru * 3. Neither the name of the University nor the names of its contributors 2175584Sru * may be used to endorse or promote products derived from this software 2275584Sru * without specific prior written permission. 2375584Sru * 2475584Sru * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25151497Sru * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 2675584Sru * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 2775584Sru * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28151497Sru * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29151497Sru * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30151497Sru * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31151497Sru * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 3275584Sru * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 3375584Sru * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 3475584Sru * SUCH DAMAGE. 3575584Sru * 3675584Sru * @(#)cache.h 8.1 (Berkeley) 5/31/93 3775584Sru */ 3875584Sru 3975584Sru/* 40151497Sru * Constants and data structures used to implement group and password file 4175584Sru * caches. Traditional passwd/group cache routines perform quite poorly with 4275584Sru * archives. The chances of hitting a valid lookup with an archive is quite a 4375584Sru * bit worse than with files already resident on the file system. These misses 4475584Sru * create a MAJOR performance cost. To address this problem, these routines 4575584Sru * cache both hits and misses. 4675584Sru * 4775584Sru * NOTE: name lengths must be as large as those stored in ANY PROTOCOL and 4875584Sru * as stored in the passwd and group files. CACHE SIZES MUST BE PRIME 4975584Sru */ 5075584Sru#define UNMLEN 32 /* >= user name found in any protocol */ 51#define GNMLEN 32 /* >= group name found in any protocol */ 52#define UID_SZ 317 /* size of uid to user_name cache */ 53#define UNM_SZ 317 /* size of user_name to uid cache */ 54#define GID_SZ 251 /* size of gid to group_name cache */ 55#define GNM_SZ 251 /* size of group_name to gid cache */ 56#define VALID 1 /* entry and name are valid */ 57#define INVALID 2 /* entry valid, name NOT valid */ 58 59/* 60 * Node structures used in the user, group, uid, and gid caches. 61 */ 62 63typedef struct uidc { 64 int valid; /* is this a valid or a miss entry */ 65 char name[UNMLEN]; /* uid name */ 66 uid_t uid; /* cached uid */ 67} UIDC; 68 69typedef struct gidc { 70 int valid; /* is this a valid or a miss entry */ 71 char name[GNMLEN]; /* gid name */ 72 gid_t gid; /* cached gid */ 73} GIDC; 74