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Diffstat (limited to 'usr.sbin/named/db.h')
| -rw-r--r-- | usr.sbin/named/db.h | 131 |
1 files changed, 131 insertions, 0 deletions
diff --git a/usr.sbin/named/db.h b/usr.sbin/named/db.h new file mode 100644 index 00000000000..7e3bb3e9217 --- /dev/null +++ b/usr.sbin/named/db.h @@ -0,0 +1,131 @@ +/* + * 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(); |