diff options
Diffstat (limited to 'contrib/bind/named/db_save.c')
| -rw-r--r-- | contrib/bind/named/db_save.c | 208 |
1 files changed, 208 insertions, 0 deletions
diff --git a/contrib/bind/named/db_save.c b/contrib/bind/named/db_save.c new file mode 100644 index 0000000..88b31d1 --- /dev/null +++ b/contrib/bind/named/db_save.c @@ -0,0 +1,208 @@ +#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 8.4 1996/08/05 08:31:30 vixie Exp $"; +#endif /* not lint */ + +/* + * ++Copyright++ 1986 + * - + * Copyright (c) 1986 + * 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-- + */ + +/* + * Buffer allocation and deallocation routines. + */ + +#include <sys/types.h> +#include <sys/param.h> +#include <sys/socket.h> +#include <netinet/in.h> +#include <arpa/nameser.h> +#include <syslog.h> +#include <stdio.h> +#include <errno.h> +#include <assert.h> + +#include "named.h" + +/* + * Allocate a name buffer & save name. + */ +struct namebuf * +savename(name, len) + const char *name; + int len; +{ + register struct namebuf *np; + + assert(len >= 0 && len <= (MAXLABEL * 2)); + np = (struct namebuf *) malloc(NAMESIZE(len)); + if (np == NULL) + panic(errno, "savename: malloc"); + bzero((char*)np, NAMESIZE(len)); + NAMELEN(*np) = len; + bcopy(name, NAME(*np), len); + NAME(*np)[len] = '\0'; + 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; + int bytes = (type == T_NS) ? DATASIZE(size)+INT32SZ : DATASIZE(size); + + dp = (struct databuf *) +#ifdef DMALLOC + dmalloc(file, line, bytes) +#else + malloc(bytes) +#endif + ; + if (dp == NULL) + panic(errno, "savedata: malloc"); + bzero((char*)dp, bytes); + 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; + dp->d_cred = 0; + dp->d_clev = 0; +#ifdef NCACHE + dp->d_rcode = NOERROR; +#endif +#ifdef STATS + dp->d_ns = NULL; +#endif + 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; + } + dprintf(4, (ddt, "savehash GROWING to %d\n", newsize)); + 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); + } + dprintf(4, (ddt, "savehash(%#lx) cnt=%d, sz=%d, newsz=%d\n", + (u_long)oldhtp, oldhtp->h_cnt, oldhtp->h_size, newsize)); + 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); +} |
