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/*
* Copyright (c) 1985, 1990 Regents of the University of California.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* from: @(#)db.h 4.16 (Berkeley) 6/1/90
* $Id: db.h,v 1.1 1995/10/18 08:47:49 deraadt Exp $
*/
/*
* Global structures and variables for data base routines.
*/
#define INVBLKSZ 7 /* # of namebuf pointers per block */
#define INVHASHSZ 919 /* size of inverse hash table */
/* max length of data in RR data field */
#define MAXDATA 2048
/*
* Hash table structures.
*/
struct databuf {
struct databuf *d_next; /* linked list */
u_long d_ttl; /* time to live */
short d_flags;
short d_zone; /* zone number */
short d_class; /* class number */
short d_type; /* type number */
short d_mark; /* place to mark data */
short d_size; /* size of data area */
u_long d_nstime; /* NS response time, milliseconds */
char d_data[1]; /* the data is malloc'ed to size */
};
#define DATASIZE(n) (sizeof(struct databuf) - 1 + n)
/*
* d_flags definitions
*/
#define DB_F_HINT 0x01 /* databuf belongs to fcachetab */
struct namebuf {
char *n_dname; /* domain name */
u_int n_hashval; /* hash value of n_dname */
struct namebuf *n_next; /* linked list */
struct databuf *n_data; /* data records */
struct namebuf *n_parent; /* parent domain */
struct hashbuf *n_hash; /* hash table for children */
};
struct invbuf {
struct invbuf *i_next; /* linked list */
struct namebuf *i_dname[INVBLKSZ]; /* domain name */
};
struct hashbuf {
int h_size; /* size of hash table */
int h_cnt; /* number of entries */
struct namebuf *h_tab[1]; /* malloc'ed as needed */
};
#define HASHSIZE(s) (s*sizeof(struct namebuf *) + 2*sizeof(int))
#define HASHSHIFT 3
#define HASHMASK 0x1f
/*
* Flags to updatedb
*/
#define DB_NODATA 0x01 /* data should not exist */
#define DB_MEXIST 0x02 /* data must exist */
#define DB_DELETE 0x04 /* delete data if it exists */
#define DB_NOTAUTH 0x08 /* must not update authoritative data */
#define DB_NOHINTS 0x10 /* don't reflect update in fcachetab */
#define DB_Z_CACHE (0) /* cache-zone-only db_dump() */
#define DB_Z_ALL (-1) /* normal db_dump() */
/*
* Error return codes
*/
#define OK 0
#define NONAME -1
#define NOCLASS -2
#define NOTYPE -3
#define NODATA -4
#define DATAEXISTS -5
#define NODBFILE -6
#define TOOMANYZONES -7
#define GOODDB -8
#define NEWDB -9
#define AUTH -10
extern struct hashbuf *hashtab; /* root hash table */
extern struct invbuf *invtab[]; /* inverse hash table */
extern struct hashbuf *fcachetab; /* hash table for cache read from file*/
extern struct namebuf *nlookup();
extern struct namebuf *savename();
extern struct databuf *savedata();
extern struct databuf *rm_datum();
extern struct hashbuf *savehash();
extern struct invbuf *saveinv();
extern char *savestr();
extern char *malloc(), *realloc(), *calloc();
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