1 /*
2 * Copyright (c) 1986, 1988 Regents of the University of California.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 */
33
34 #ifndef lint
35 static char sccsid[] = "@(#)db_reload.c 4.22 (Berkeley) 3/21/91";
36 #endif /* not lint */
37
38 #include <sys/param.h>
39 #include <sys/time.h>
40 #include <netinet/in.h>
41 #include <arpa/nameser.h>
42 #include <stdio.h>
43 #include <syslog.h>
44 #include "ns.h"
45 #include "db.h"
46
47 extern time_t resettime;
48
49 /*
50 * Flush and reload data base.
51 */
52
db_reload()53 db_reload()
54 {
55 extern char *bootfile;
56
57 #ifdef DEBUG
58 if (debug >= 3)
59 fprintf(ddt,"reload()\n");
60 #endif
61 syslog(LOG_NOTICE, "reloading nameserver\n");
62
63 qflush();
64 sqflush();
65 fwdtab_free();
66 free_sort_list();
67 getnetconf();
68 ns_init(bootfile);
69 time(&resettime);
70 }
71
72 db_free(htp)
73 struct hashbuf *htp;
74 {
75 register struct databuf *dp, *nextdp;
76 register struct namebuf *np, *nextnp;
77 struct namebuf **npp, **nppend;
78
79 npp = htp->h_tab;
80 nppend = npp + htp->h_size;
81 while (npp < nppend) {
82 for (np = *npp++; np != NULL; np = nextnp) {
83 if (np->n_hash != NULL)
84 db_free(np->n_hash);
85 (void) free((char *)np->n_dname);
86 for (dp = np->n_data; dp != NULL; ) {
87 nextdp = dp->d_next;
88 (void) free((char *)dp);
89 dp = nextdp;
90 }
91 nextnp = np->n_next;
92 free((char *)np);
93 }
94 }
95 (void) free((char *)htp);
96 }
97
db_inv_free()98 db_inv_free()
99 {
100 register struct invbuf *ip;
101 register int i, j;
102
103 for (i = 0; i < INVHASHSZ; i++)
104 for (ip = invtab[i]; ip != NULL; ip = ip->i_next)
105 for (j = 0; j < INVBLKSZ; j++)
106 ip->i_dname[j] = NULL;
107 }
108
fwdtab_free()109 fwdtab_free()
110 {
111 extern struct fwdinfo *fwdtab;
112 struct fwdinfo *fp, *nextfp;
113
114 for (fp = fwdtab; fp != NULL; fp = nextfp) {
115 nextfp = fp->next;
116 free((char *)fp);
117 }
118 fwdtab = NULL;
119 }
120