386BSD 0.1 development

[unix-history] / usr / src / usr.sbin / named / db_reload.c

/*
 * Copyright (c) 1986, 1988 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.
 */

#ifndef lint
static char sccsid[] = "@(#)db_reload.c	4.22 (Berkeley) 3/21/91";
#endif /* not lint */

#include <sys/param.h>
#include <sys/time.h>
#include <netinet/in.h>
#include <arpa/nameser.h>
#include <stdio.h>
#include <syslog.h>
#include "ns.h"
#include "db.h"

extern time_t	resettime;

/*
 * Flush and reload data base.
 */

db_reload()
{
	extern char *bootfile;

#ifdef DEBUG
	if (debug >= 3)
		fprintf(ddt,"reload()\n");
#endif
	syslog(LOG_NOTICE, "reloading nameserver\n");

	qflush();
	sqflush();
	fwdtab_free();
	free_sort_list();
	getnetconf();
	ns_init(bootfile);
	time(&resettime);
}

db_free(htp)
	struct hashbuf *htp;
{
	register struct databuf *dp, *nextdp;
	register struct namebuf *np, *nextnp;
	struct namebuf **npp, **nppend;

	npp = htp->h_tab;
	nppend = npp + htp->h_size;
	while (npp < nppend) {
	    for (np = *npp++; np != NULL; np = nextnp) {
		if (np->n_hash != NULL)
			db_free(np->n_hash);
		(void) free((char *)np->n_dname);
		for (dp = np->n_data; dp != NULL; ) {
			nextdp = dp->d_next;
			(void) free((char *)dp);
			dp = nextdp;
		}
		nextnp = np->n_next;
		free((char *)np);
	    }
	}
	(void) free((char *)htp);
}

db_inv_free()
{
	register struct invbuf *ip;
	register int i, j;

	for (i = 0; i < INVHASHSZ; i++)
		for (ip = invtab[i]; ip != NULL; ip = ip->i_next)
			for (j = 0; j < INVBLKSZ; j++)
				ip->i_dname[j] = NULL;
}

fwdtab_free()
{
	extern	struct fwdinfo *fwdtab;
	struct fwdinfo *fp, *nextfp;

	for (fp = fwdtab; fp != NULL; fp = nextfp) {
		nextfp = fp->next;
		free((char *)fp);
	}
	fwdtab = NULL;
}