1 /* $NetBSD: nsswitch.h,v 1.6 1999/01/26 01:04:07 lukem Exp $ */ 2 /* $FreeBSD$ */ 3 4 /*- 5 * Copyright (c) 1997, 1998, 1999 The NetBSD Foundation, Inc. 6 * All rights reserved. 7 * 8 * This code is derived from software contributed to The NetBSD Foundation 9 * by Luke Mewburn. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by the NetBSD 22 * Foundation, Inc. and its contributors. 23 * 4. Neither the name of The NetBSD Foundation nor the names of its 24 * contributors may be used to endorse or promote products derived 25 * from this software without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 28 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 29 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 30 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 31 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 32 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 33 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 34 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 35 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 36 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 37 * POSSIBILITY OF SUCH DAMAGE. 38 */ 39 40 #ifndef _NSSWITCH_H 41 #define _NSSWITCH_H 1 42 43 #include <sys/types.h> 44 45 #include <stdarg.h> 46 47 #ifndef _PATH_NS_CONF 48 #define _PATH_NS_CONF "/etc/nsswitch.conf" 49 #endif 50 51 #define NS_CONTINUE 0 52 #define NS_RETURN 1 53 54 #define NS_SUCCESS (1<<0) /* entry was found */ 55 #define NS_UNAVAIL (1<<1) /* source not responding, or corrupt */ 56 #define NS_NOTFOUND (1<<2) /* source responded 'no such entry' */ 57 #define NS_TRYAGAIN (1<<3) /* source busy, may respond to retrys */ 58 #define NS_STATUSMASK 0x000000ff /* bitmask to get the status flags */ 59 60 /* 61 * currently implemented sources 62 */ 63 #define NSSRC_FILES "files" /* local files */ 64 #define NSSRC_DNS "dns" /* DNS; IN for hosts, HS for others */ 65 #define NSSRC_NIS "nis" /* YP/NIS */ 66 #define NSSRC_COMPAT "compat" /* passwd,group in YP compat mode */ 67 68 /* 69 * currently implemented databases 70 */ 71 #define NSDB_HOSTS "hosts" 72 #define NSDB_GROUP "group" 73 #define NSDB_GROUP_COMPAT "group_compat" 74 #define NSDB_NETGROUP "netgroup" 75 #define NSDB_NETWORKS "networks" 76 #define NSDB_PASSWD "passwd" 77 #define NSDB_PASSWD_COMPAT "passwd_compat" 78 #define NSDB_SHELLS "shells" 79 80 /* 81 * suggested databases to implement 82 */ 83 #define NSDB_ALIASES "aliases" 84 #define NSDB_AUTH "auth" 85 #define NSDB_AUTOMOUNT "automount" 86 #define NSDB_BOOTPARAMS "bootparams" 87 #define NSDB_ETHERS "ethers" 88 #define NSDB_EXPORTS "exports" 89 #define NSDB_NETMASKS "netmasks" 90 #define NSDB_PHONES "phones" 91 #define NSDB_PRINTCAP "printcap" 92 #define NSDB_PROTOCOLS "protocols" 93 #define NSDB_REMOTE "remote" 94 #define NSDB_RPC "rpc" 95 #define NSDB_SENDMAILVARS "sendmailvars" 96 #define NSDB_SERVICES "services" 97 #define NSDB_TERMCAP "termcap" 98 #define NSDB_TTYS "ttys" 99 100 /* 101 * ns_dtab - `nsswitch dispatch table' 102 * contains an entry for each source and the appropriate function to call 103 */ 104 typedef struct { 105 const char *src; 106 int (*callback)(void *retval, void *cb_data, va_list ap); 107 void *cb_data; 108 } ns_dtab; 109 110 /* 111 * macros to help build an ns_dtab[] 112 */ 113 #define NS_FILES_CB(F,C) { NSSRC_FILES, F, C }, 114 #define NS_COMPAT_CB(F,C) { NSSRC_COMPAT, F, C }, 115 116 #ifdef HESIOD 117 # define NS_DNS_CB(F,C) { NSSRC_DNS, F, C }, 118 #else 119 # define NS_DNS_CB(F,C) 120 #endif 121 122 #ifdef YP 123 # define NS_NIS_CB(F,C) { NSSRC_NIS, F, C }, 124 #else 125 # define NS_NIS_CB(F,C) 126 #endif 127 128 /* 129 * ns_src - `nsswitch source' 130 * used by the nsparser routines to store a mapping between a source 131 * and its dispatch control flags for a given database. 132 */ 133 typedef struct { 134 const char *name; 135 u_int32_t flags; 136 } ns_src; 137 138 139 /* 140 * default sourcelist (if nsswitch.conf is missing, corrupt, 141 * or the requested database doesn't have an entry. 142 */ 143 extern const ns_src __nsdefaultsrc[]; 144 145 146 #ifdef _NS_PRIVATE 147 148 /* 149 * private data structures for back-end nsswitch implementation 150 */ 151 152 /* 153 * ns_dbt - `nsswitch database thang' 154 * for each database in /etc/nsswitch.conf there is a ns_dbt, with its 155 * name and a list of ns_src's containing the source information. 156 */ 157 typedef struct { 158 const char *name; /* name of database */ 159 ns_src *srclist; /* list of sources */ 160 int srclistsize; /* size of srclist */ 161 } ns_dbt; 162 163 #endif /* _NS_PRIVATE */ 164 165 166 #include <sys/cdefs.h> 167 168 __BEGIN_DECLS 169 extern int nsdispatch(void *, const ns_dtab [], const char *, 170 const char *, const ns_src [], ...); 171 172 #ifdef _NS_PRIVATE 173 extern void _nsdbtaddsrc(ns_dbt *, const ns_src *); 174 extern void _nsdbtdump(const ns_dbt *); 175 extern const ns_dbt *_nsdbtget(const char *); 176 extern void _nsdbtput(const ns_dbt *); 177 extern void _nsyyerror(const char *); 178 extern int _nsyylex(void); 179 extern int _nsyylineno; 180 #endif /* _NS_PRIVATE */ 181 182 __END_DECLS 183 184 #endif /* !_NSSWITCH_H */ 185