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;
}