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      1 /*	$NetBSD: hash.h,v 1.3 2002/07/06 01:00:15 wiz Exp $ */
      2 
      3 /*
      4  * Copyright (c) 1995
      5  *	Bill Paul <wpaul (at) ctr.columbia.edu>.  All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. All advertising materials mentioning features or use of this software
     16  *    must display the following acknowledgement:
     17  *	This product includes software developed by Bill Paul.
     18  * 4. Neither the name of the author nor the names of any co-contributors
     19  *    may be used to endorse or promote products derived from this software
     20  *    without specific prior written permission.
     21  *
     22  * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
     23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     25  * ARE DISCLAIMED.  IN NO EVENT SHALL Bill Paul OR CONTRIBUTORS BE LIABLE
     26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     32  * SUCH DAMAGE.
     33  *
     34  */
     35 
     36 /* Groupname entry hung off a member_entry node. */
     37 struct grouplist {
     38 	char *groupname;
     39 	struct grouplist *next;
     40 };
     41 
     42 /* Entry in the cooked member list hash table. */
     43 struct member_entry {
     44 	char *key;
     45 	char *domain;
     46 	struct grouplist *groups;
     47 	struct member_entry *next;
     48 };
     49 
     50 /* Entry in the raw netgroup table. */
     51 struct group_entry {
     52 	char *key;
     53 	char *data;
     54 	struct group_entry *next;
     55 };
     56 
     57 /* Table size (chosen arbitrarily). Not too big, not too small. */
     58 #define TABLESIZE 256
     59 #define HASH_MASK 0x000000FF
     60 
     61 #define LINSIZ 1024 * 10
     62 
     63 char   *lookup(struct group_entry **, const char *);
     64 void	mstore(struct member_entry **, const char *, const char *,
     65 	       const char *);
     66 void	store(struct group_entry **, const char *, const char *);
     67 void	rng_endnetgrent(void);
     68 int	rng_getnetgrent(char **, char **, char **);
     69 void	rng_setnetgrent(const char *);
     70