1 /* $NetBSD: nsswitch.h,v 1.12 2003/07/09 01:59:34 kristerw Exp $ */ 2 3 /*- 4 * Copyright (c) 1997, 1998, 1999 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Luke Mewburn. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 #ifndef _NSSWITCH_H 40 #define _NSSWITCH_H 1 41 42 /* 43 * Don't use va_list in prototypes. Va_list is typedef'd in two places 44 * (<machine/varargs.h> and <machine/stdarg.h>), so if we include one of 45 * them here we may collide with the utility's includes. It's unreasonable 46 * for utilities to have to include one of them to include nsswitch.h, so 47 * we get _BSD_VA_LIST_ from <machine/ansi.h> and use it. 48 */ 49 #include <machine/ansi.h> 50 #include <sys/types.h> 51 52 #ifndef _PATH_NS_CONF 53 #define _PATH_NS_CONF "/etc/nsswitch.conf" 54 #endif 55 56 #define NS_CONTINUE 0 57 #define NS_RETURN 1 58 59 #define NS_SUCCESS (1<<0) /* entry was found */ 60 #define NS_UNAVAIL (1<<1) /* source not responding, or corrupt */ 61 #define NS_NOTFOUND (1<<2) /* source responded 'no such entry' */ 62 #define NS_TRYAGAIN (1<<3) /* source busy, may respond to retrys */ 63 #define NS_STATUSMASK 0x000000ff /* bitmask to get the status flags */ 64 65 /* 66 * currently implemented sources 67 */ 68 #define NSSRC_FILES "files" /* local files */ 69 #define NSSRC_DNS "dns" /* DNS; IN for hosts, HS for others */ 70 #define NSSRC_NIS "nis" /* YP/NIS */ 71 #define NSSRC_COMPAT "compat" /* passwd,group in YP compat mode */ 72 73 /* 74 * currently implemented databases 75 */ 76 #define NSDB_HOSTS "hosts" 77 #define NSDB_GROUP "group" 78 #define NSDB_GROUP_COMPAT "group_compat" 79 #define NSDB_NETGROUP "netgroup" 80 #define NSDB_NETWORKS "networks" 81 #define NSDB_PASSWD "passwd" 82 #define NSDB_PASSWD_COMPAT "passwd_compat" 83 #define NSDB_SHELLS "shells" 84 85 /* 86 * suggested databases to implement 87 */ 88 #define NSDB_ALIASES "aliases" 89 #define NSDB_AUTH "auth" 90 #define NSDB_AUTOMOUNT "automount" 91 #define NSDB_BOOTPARAMS "bootparams" 92 #define NSDB_ETHERS "ethers" 93 #define NSDB_EXPORTS "exports" 94 #define NSDB_NETMASKS "netmasks" 95 #define NSDB_PHONES "phones" 96 #define NSDB_PRINTCAP "printcap" 97 #define NSDB_PROTOCOLS "protocols" 98 #define NSDB_REMOTE "remote" 99 #define NSDB_RPC "rpc" 100 #define NSDB_SENDMAILVARS "sendmailvars" 101 #define NSDB_SERVICES "services" 102 #define NSDB_TERMCAP "termcap" 103 #define NSDB_TTYS "ttys" 104 105 /* 106 * ns_dtab - `nsswitch dispatch table' 107 * contains an entry for each source and the appropriate function to call 108 */ 109 typedef struct { 110 const char *src; 111 int (*callback) __P((void *, void *, _BSD_VA_LIST_)); 112 void *cb_data; 113 } ns_dtab; 114 115 /* 116 * macros to help build an ns_dtab[] 117 */ 118 #define NS_FILES_CB(F,C) { NSSRC_FILES, F, C }, 119 #define NS_COMPAT_CB(F,C) { NSSRC_COMPAT, F, C }, 120 121 #ifdef HESIOD 122 # define NS_DNS_CB(F,C) { NSSRC_DNS, F, C }, 123 #else 124 # define NS_DNS_CB(F,C) 125 #endif 126 127 #ifdef YP 128 # define NS_NIS_CB(F,C) { NSSRC_NIS, F, C }, 129 #else 130 # define NS_NIS_CB(F,C) 131 #endif 132 133 /* 134 * ns_src - `nsswitch source' 135 * used by the nsparser routines to store a mapping between a source 136 * and its dispatch control flags for a given database. 137 */ 138 typedef struct { 139 const char *name; 140 u_int32_t flags; 141 } ns_src; 142 143 144 /* 145 * default sourcelist (if nsswitch.conf is missing, corrupt, 146 * or the requested database doesn't have an entry. 147 */ 148 extern const ns_src __nsdefaultsrc[]; 149 150 151 #ifdef _NS_PRIVATE 152 153 /* 154 * private data structures for back-end nsswitch implementation 155 */ 156 157 /* 158 * ns_dbt - `nsswitch database thang' 159 * for each database in /etc/nsswitch.conf there is a ns_dbt, with its 160 * name and a list of ns_src's containing the source information. 161 */ 162 typedef struct { 163 const char *name; /* name of database */ 164 ns_src *srclist; /* list of sources */ 165 int srclistsize; /* size of srclist */ 166 } ns_dbt; 167 168 #endif /* _NS_PRIVATE */ 169 170 171 #include <sys/cdefs.h> 172 173 __BEGIN_DECLS 174 int nsdispatch __P((void *, const ns_dtab [], const char *, 175 const char *, const ns_src [], ...)); 176 177 #ifdef _NS_PRIVATE 178 int _nsdbtaddsrc __P((ns_dbt *, const ns_src *)); 179 void _nsdbtdump __P((const ns_dbt *)); 180 const ns_dbt *_nsdbtget __P((const char *)); 181 int _nsdbtput __P((const ns_dbt *)); 182 void _nsyyerror __P((const char *)); 183 int _nsyylex __P((void)); 184 #endif /* _NS_PRIVATE */ 185 186 __END_DECLS 187 188 #endif /* !_NSSWITCH_H */ 189