2 * Copyright (c) 1992, 1993
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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
33 * @(#) Copyright (c) 1992, 1993 The Regents of the University of California. All rights reserved.
34 * @(#)cap_mkdb.c 8.1 (Berkeley) 6/6/93
35 * $FreeBSD: src/usr.bin/cap_mkdb/cap_mkdb.c,v 1.6.2.2 2001/08/02 01:15:51 obrien Exp $
36 * $DragonFly: src/usr.bin/cap_mkdb/cap_mkdb.c,v 1.2 2003/06/17 04:29:25 dillon Exp $
39 #include <sys/param.h>
50 int main __P((int, char *[]));
51 void db_build __P((char **));
52 void dounlink __P((void));
53 void usage __P((void));
57 char *capdb, *capname, buf[8 * 1024];
60 * Mkcapdb creates a capability hash database for quick retrieval of capability
61 * records. The database contains 2 types of entries: records and references
62 * marked by the first byte in the data. A record entry contains the actual
63 * capability record whereas a reference contains the name (key) under which
64 * the correct record is stored.
74 while ((c = getopt(argc, argv, "f:v")) != -1) {
94 * The database file is the first argument if no name is specified.
95 * Make arrangements to unlink it if exit badly.
97 (void)snprintf(buf, sizeof(buf), "%s.db", capname ? capname : *argv);
98 if ((capname = strdup(buf)) == NULL)
99 errx(1, "strdup failed");
100 if ((capdbp = dbopen(capname,
101 O_CREAT | O_TRUNC | O_RDWR, DEFFILEMODE, DB_HASH, NULL)) == NULL)
104 if (atexit(dounlink))
109 if (capdbp->close(capdbp) < 0)
110 err(1, "%s", capname);
119 (void)unlink(capname);
123 * Any changes to these definitions should be made also in the getcap(3)
126 #define RECOK (char)0
127 #define TCERR (char)1
128 #define SHADOW (char)2
131 * Db_build() builds the name and capability databases according to the
146 for (reccnt = 0, bplen = 0; (st = cgetnext(&bp, ifiles)) > 0;) {
149 * Allocate enough memory to store record, terminating
150 * NULL and one extra byte.
153 if (bplen <= len + 2) {
154 bplen += MAX(256, len + 2);
155 if ((data.data = realloc(data.data, bplen)) == NULL)
156 errx(1, "malloc failed");
159 /* Find the end of the name field. */
160 if ((p = strchr(bp, ':')) == NULL) {
161 warnx("no name field: %.*s", (int)MIN(len, 20), bp);
165 /* First byte of stored record indicates status. */
168 ((char *)(data.data))[0] = RECOK;
171 ((char *)(data.data))[0] = TCERR;
172 warnx("record not tc expanded: %.*s", (int)(p - bp),
177 /* Create the stored record. */
178 memmove(&((u_char *)(data.data))[1], bp, len + 1);
181 /* Store the record under the name field. */
185 switch(capdbp->put(capdbp, &key, &data, R_NOOVERWRITE)) {
190 warnx("ignored duplicate: %.*s",
191 (int)key.size, (char *)key.data);
196 /* If only one name, ignore the rest. */
198 if (strchr(bp, '|') == NULL)
202 /* The rest of the names reference the entire name. */
203 ((char *)(data.data))[0] = SHADOW;
204 memmove(&((u_char *)(data.data))[1], key.data, key.size);
205 data.size = key.size + 1;
207 /* Store references for other names. */
208 for (p = t = bp;; ++p) {
209 if (p > t && (*p == ':' || *p == '|')) {
212 switch(capdbp->put(capdbp,
213 &key, &data, R_NOOVERWRITE)) {
218 warnx("ignored duplicate: %.*s",
219 (int)key.size, (char *)key.data);
230 err(1, "file argument");
233 errx(1, "potential reference loop detected");
238 (void)printf("cap_mkdb: %d capability records\n", reccnt);
244 (void)fprintf(stderr,
245 "usage: cap_mkdb [-v] [-f outfile] file [file ...]\n");