diff options
author | peter <peter@FreeBSD.org> | 1998-05-03 04:11:49 +0000 |
---|---|---|
committer | peter <peter@FreeBSD.org> | 1998-05-03 04:11:49 +0000 |
commit | 0666320b4eda500556d2c671c9527c9000057492 (patch) | |
tree | 759849259eae9f7cb0d3ddbd7a131081c6688068 /contrib/bind/bin/named/db_save.c | |
parent | 58ca52f41726d17758909ddafba7b6b6766c789c (diff) | |
download | FreeBSD-src-0666320b4eda500556d2c671c9527c9000057492.zip FreeBSD-src-0666320b4eda500556d2c671c9527c9000057492.tar.gz |
Import (trimmed) ISC bind-8.1.2-t3b. This will be updated to 8.1.2 on
final release.
Obtained from: ftp.isc.org
Diffstat (limited to 'contrib/bind/bin/named/db_save.c')
-rw-r--r-- | contrib/bind/bin/named/db_save.c | 221 |
1 files changed, 221 insertions, 0 deletions
diff --git a/contrib/bind/bin/named/db_save.c b/contrib/bind/bin/named/db_save.c new file mode 100644 index 0000000..a05c40f --- /dev/null +++ b/contrib/bind/bin/named/db_save.c @@ -0,0 +1,221 @@ +#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 8.15 1998/01/26 22:40:08 halley Exp $"; +#endif /* not lint */ + +/* + * 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. + */ + +/* + * Portions Copyright (c) 1996, 1997 by Internet Software Consortium. + * + * 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. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS + * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE + * CONSORTIUM 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. + */ + +/* + * Buffer allocation and deallocation routines. + */ + +#include "port_before.h" + +#include <sys/types.h> +#include <sys/param.h> +#include <sys/socket.h> + +#include <netinet/in.h> +#include <arpa/nameser.h> + +#include <errno.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <syslog.h> +#include <time.h> + +#include <isc/eventlib.h> +#include <isc/logging.h> +#include <isc/memcluster.h> + +#include "port_after.h" + +#include "named.h" + +/* + * Allocate a name buffer & save name. + */ +struct namebuf * +savename(const char *name, int len) { + struct namebuf *np; + + /* + * Note that MAXLABEL * 4 < 256, so a single length byte is enough. + * Also, we use MAXLABEL * 4 because each label character can + * expand into up to four characters when rendered in canonical + * form. + */ + INSIST(len >= 0 && len <= (MAXLABEL * 4)); + np = (struct namebuf *) memget(NAMESIZE(len)); + if (np == NULL) + panic("savename: memget", NULL); + memset(np, 0, NAMESIZE(len)); + NAMELEN(*np) = (unsigned)len; + memcpy(NAME(*np), name, len); + NAME(*np)[len] = '\0'; + return (np); +} + +/* + * Allocate a data buffer & save data. + */ +struct databuf * +savedata(class, type, ttl, data, size) + int class, type; + u_int32_t ttl; + u_char *data; + int size; +{ + struct databuf *dp; + int bytes = (type == T_NS) ? DATASIZE(size)+INT32SZ : DATASIZE(size); + + dp = (struct databuf *)memget(bytes); + if (dp == NULL) + panic("savedata: memget", NULL); + memset(dp, 0, 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; + dp->d_rcode = NOERROR; + dp->d_ns = NULL; + dp->d_nstime = 0; + memcpy(dp->d_data, data, dp->d_size); + return (dp); +} + +int hashsizes[] = { /* hashtable sizes */ + 2, + 11, + 113, + 337, + 977, + 2053, + 4073, + 8011, + 16001, + 99887, + 0 +}; + +/* + * Allocate a data buffer & save data. + */ +struct hashbuf * +savehash(oldhtp) + struct hashbuf *oldhtp; +{ + struct hashbuf *htp; + struct namebuf *np, *nnp, **hp; + int n, newsize; + + if (oldhtp == NULL) + newsize = hashsizes[0]; + else { + for (n = 0; (newsize = hashsizes[n++]) != 0; (void)NULL) + if (oldhtp->h_size == newsize) { + newsize = hashsizes[n]; + break; + } + if (newsize == 0) + newsize = oldhtp->h_size * 2 + 1; + } + ns_debug(ns_log_db, 4, "savehash GROWING to %d", newsize); + htp = (struct hashbuf *) memget(HASHSIZE(newsize)); + if (htp == NULL) + ns_panic(ns_log_db, 0, "savehash: %s", strerror(errno)); + htp->h_size = newsize; + memset(htp->h_tab, 0, newsize * sizeof(struct namebuf *)); + if (oldhtp == NULL) { + htp->h_cnt = 0; + return (htp); + } + ns_debug(ns_log_db, 4, "savehash(%#lx) cnt=%d, sz=%d, newsz=%d", + (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; + } + } + oldhtp->h_cnt = 0; /* Keep rm_hash() happy. */ + rm_hash(oldhtp); + return (htp); +} |