BSD 4_3_Net_1 release

[unix-history] / 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 are permitted
* provided that the above copyright notice and this paragraph are
* duplicated in all such forms and that any documentation,
* advertising materials, and other materials related to such
* distribution and use acknowledge that the software was developed
* by the University of California, Berkeley.  The name of the
* University may not be used to endorse or promote products derived
* from this software without specific prior written permission.
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*/

#ifndef lint
static char sccsid[] = "@(#)db_reload.c 4.19 (Berkeley) 1/14/89";
#endif /* not lint */

#include <sys/types.h>
#include <sys/time.h>
#include <netinet/in.h>
#include <stdio.h>
#include <syslog.h>
#include <arpa/nameser.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();
       fwdtab_free();
       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;
}