4.4BSD/usr/src/contrib/bind-4.9/named/db_save.c
#if !defined(lint) && !defined(SABER)
static char sccsid[] = "@(#)db_save.c 4.16 (Berkeley) 3/21/91";
static char rcsid[] = "$Id: db_save.c,v 4.9.1.1 1993/05/02 22:43:03 vixie Rel $";
#endif /* not lint */
/*
* ++Copyright++ 1986
* -
* Copyright (c) 1986 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--
*/
/*
* Buffer allocation and deallocation routines.
*/
#include <sys/param.h>
#include <arpa/nameser.h>
#include <syslog.h>
#include <stdio.h>
#include "../conf/portability.h"
#include "../conf/options.h"
#include "db.h"
#ifdef DEBUG
extern int debug;
extern FILE *ddt;
#endif
/*
* Allocate a name buffer & save name.
*/
struct namebuf *
savename(name)
char *name;
{
register struct namebuf *np;
np = (struct namebuf *) malloc(sizeof(struct namebuf));
if (np == NULL) {
syslog(LOG_ERR, "savename: %m");
exit(1);
}
np->n_dname = savestr(name);
np->n_next = NULL;
np->n_data = NULL;
np->n_hash = NULL;
return (np);
}
/*
* Allocate a data buffer & save data.
*/
struct databuf *
#ifdef DMALLOC
savedata_tagged(file, line, class, type, ttl, data, size)
char *file;
int line;
#else
savedata(class, type, ttl, data, size)
#endif
int class, type;
u_int32_t ttl;
u_char *data;
int size;
{
register struct databuf *dp;
if (type == T_NS)
dp = (struct databuf *)
#ifdef DMALLOC
dmalloc(file, line,
#else
malloc(
#endif
(unsigned)DATASIZE(size)+sizeof(u_int32_t));
else
dp = (struct databuf *)
#ifdef DMALLOC
dmalloc(file, line,
#else
malloc(
#endif
(unsigned)DATASIZE(size));
if (dp == NULL) {
syslog(LOG_ERR, "savedata: %m");
exit(1);
}
dp->d_next = NULL;
dp->d_type = type;
dp->d_class = class;
dp->d_ttl = ttl;
dp->d_size = size;
dp->d_mark = 0;
dp->d_flags = 0;
#ifdef CRED
dp->d_cred = 0;
#endif /*CRED*/
dp->d_nstime = 0;
bcopy(data, dp->d_data, dp->d_size);
return (dp);
}
int hashsizes[] = { /* hashtable sizes */
2,
11,
113,
337,
977,
2053,
4073,
8011,
16001,
0
};
/*
* Allocate a data buffer & save data.
*/
struct hashbuf *
savehash(oldhtp)
register struct hashbuf *oldhtp;
{
register struct hashbuf *htp;
register struct namebuf *np, *nnp, **hp;
register int n;
int newsize;
if (oldhtp == NULL)
newsize = hashsizes[0];
else {
for (n = 0; newsize = hashsizes[n++]; )
if (oldhtp->h_size == newsize) {
newsize = hashsizes[n];
break;
}
if (newsize == 0)
newsize = oldhtp->h_size * 2 + 1;
}
#ifdef DEBUG
if(debug > 3)
fprintf(ddt, "savehash GROWING to %d\n", newsize);
#endif
htp = (struct hashbuf *) malloc((unsigned)HASHSIZE(newsize));
if (htp == NULL) {
syslog(LOG_ERR, "savehash: %m");
exit(1);
}
htp->h_size = newsize;
bzero((char *) htp->h_tab, newsize * sizeof(struct namebuf *));
if (oldhtp == NULL) {
htp->h_cnt = 0;
return (htp);
}
#ifdef DEBUG
if (debug > 3)
fprintf(ddt,"savehash(%#x) cnt=%d, sz=%d, newsz=%d\n",
oldhtp, oldhtp->h_cnt, oldhtp->h_size, newsize);
#endif
htp->h_cnt = oldhtp->h_cnt;
for (n = 0; n < oldhtp->h_size; n++) {
for (np = oldhtp->h_tab[n]; np != NULL; np = nnp) {
nnp = np->n_next;
hp = &htp->h_tab[np->n_hashval % htp->h_size];
np->n_next = *hp;
*hp = np;
}
}
free((char *) oldhtp);
return (htp);
}
#if INVQ
/*
* Allocate an inverse query buffer.
*/
struct invbuf *
saveinv()
{
register struct invbuf *ip;
ip = (struct invbuf *) malloc(sizeof(struct invbuf));
if (ip == NULL) {
syslog(LOG_ERR, "saveinv: %m");
exit(1);
}
ip->i_next = NULL;
bzero((char *)ip->i_dname, sizeof(ip->i_dname));
return (ip);
}
#endif