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/*
* from db.h 4.16 (Berkeley) 6/1/90
* $Id: db_defs.h,v 1.1.1.1 1994/09/22 19:46:14 pst Exp $
*/
/*
* ++Copyright++ 1985, 1990
* -
* Copyright (c) 1985, 1990
* The 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.
* -
* Portions Copyright (c) 1993 by Digital Equipment Corporation.
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies, and that
* the name of Digital Equipment Corporation not be used in advertising or
* publicity pertaining to distribution of the document or software without
* specific, written prior permission.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL
* WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT
* CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
* DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
* PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
* ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
* SOFTWARE.
* -
* --Copyright--
*/
/*
* Global definitions 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
#define DB_ROOT_TIMBUF 3600
#define TIMBUF 300
/*
* Hash table structures.
*/
struct databuf {
struct databuf *d_next; /* linked list */
u_int32_t d_ttl; /* time to live */
/* if d_zone == DB_Z_CACHE, then
* d_ttl is actually the time when
* the record will expire.
* otherwise (for authoritative
* primary and secondary zones),
* d_ttl is the time to live.
*/
unsigned d_flags :7; /* see below */
unsigned d_cred :3; /* DB_C_{??????} */
unsigned d_clev :6;
int16_t d_zone; /* zone number or 0 for the cache */
int16_t d_class; /* class number */
int16_t d_type; /* type number */
int16_t d_mark; /* place to mark data */
int16_t d_size; /* size of data area */
#ifdef NCACHE
int16_t d_rcode; /* rcode added for negative caching */
#endif
int16_t d_rcnt;
#ifdef STATS
struct nameser *d_ns; /* NS from whence this came */
#endif
/*XXX*/ u_int32_t d_nstime; /* NS response time, milliseconds */
u_char d_data[sizeof(char*)]; /* malloc'd (padded) */
};
#define DATASIZE(n) (sizeof(struct databuf) - sizeof(char*) + n)
/*
* d_flags definitions
*/
#define DB_F_HINT 0x01 /* databuf belongs to fcachetab */
/*
* d_cred definitions
*/
#define DB_C_ZONE 4 /* authoritative zone - best */
#define DB_C_AUTH 3 /* authoritative answer */
#define DB_C_ANSWER 2 /* non-authoritative answer */
#define DB_C_ADDITIONAL 1 /* additional data */
#define DB_C_CACHE 0 /* cache - worst */
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 */
};
#ifdef INVQ
struct invbuf {
struct invbuf *i_next; /* linked list */
struct namebuf *i_dname[INVBLKSZ]; /* domain name */
};
#endif
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
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