2 * SPDX-License-Identifier: BSD-3-Clause
4 * Copyright (c) 1992, 1993
5 * The Regents of the University of California. All rights reserved.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the University nor the names of its contributors
16 * may be used to endorse or promote products derived from this software
17 * without specific prior written permission.
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 static const char copyright[] =
34 "@(#) Copyright (c) 1992, 1993\n\
35 The Regents of the University of California. All rights reserved.\n";
40 static char sccsid[] = "@(#)cap_mkdb.c 8.2 (Berkeley) 4/27/95";
44 #include <sys/cdefs.h>
45 __FBSDID("$FreeBSD$");
47 #include <sys/param.h>
58 static void db_build(char **);
59 static void dounlink(void);
60 static void usage(void);
64 static char *capname, buf[8 * 1024];
66 static HASHINFO openinfo = {
76 * Mkcapdb creates a capability hash database for quick retrieval of capability
77 * records. The database contains 2 types of entries: records and references
78 * marked by the first byte in the data. A record entry contains the actual
79 * capability record whereas a reference contains the name (key) under which
80 * the correct record is stored.
83 main(int argc, char *argv[])
89 while ((c = getopt(argc, argv, "bf:lv")) != -1) {
95 byteorder = c == 'b' ? 4321 : 1234;
114 /* Set byte order. */
115 openinfo.lorder = byteorder;
118 * The database file is the first argument if no name is specified.
119 * Make arrangements to unlink it if exit badly.
121 (void)snprintf(buf, sizeof(buf), "%s.db", capname ? capname : *argv);
122 if ((capname = strdup(buf)) == NULL)
123 errx(1, "strdup failed");
124 if ((capdbp = dbopen(capname, O_CREAT | O_TRUNC | O_RDWR,
125 DEFFILEMODE, DB_HASH, &openinfo)) == NULL)
128 if (atexit(dounlink))
133 if (capdbp->close(capdbp) < 0)
134 err(1, "%s", capname);
143 (void)unlink(capname);
147 * Any changes to these definitions should be made also in the getcap(3)
150 #define RECOK (char)0
151 #define TCERR (char)1
152 #define SHADOW (char)2
155 * Db_build() builds the name and capability databases according to the
159 db_build(char **ifiles)
169 for (reccnt = 0, bplen = 0; (st = cgetnext(&bp, ifiles)) > 0;) {
172 * Allocate enough memory to store record, terminating
173 * NULL and one extra byte.
176 if (bplen <= len + 2) {
177 bplen += MAX(256, len + 2);
178 if ((data.data = realloc(data.data, bplen)) == NULL)
179 errx(1, "malloc failed");
182 /* Find the end of the name field. */
183 if ((p = strchr(bp, ':')) == NULL) {
184 warnx("no name field: %.*s", (int)MIN(len, 20), bp);
188 /* First byte of stored record indicates status. */
191 ((char *)(data.data))[0] = RECOK;
194 ((char *)(data.data))[0] = TCERR;
195 warnx("record not tc expanded: %.*s", (int)(p - bp),
200 /* Create the stored record. */
201 memmove(&((u_char *)(data.data))[1], bp, len + 1);
204 /* Store the record under the name field. */
208 switch(capdbp->put(capdbp, &key, &data, R_NOOVERWRITE)) {
213 warnx("ignored duplicate: %.*s",
214 (int)key.size, (char *)key.data);
219 /* If only one name, ignore the rest. */
221 if (strchr(bp, '|') == NULL)
225 /* The rest of the names reference the entire name. */
226 ((char *)(data.data))[0] = SHADOW;
227 memmove(&((u_char *)(data.data))[1], key.data, key.size);
228 data.size = key.size + 1;
230 /* Store references for other names. */
231 for (p = t = bp;; ++p) {
232 if (p > t && (*p == ':' || *p == '|')) {
235 switch(capdbp->put(capdbp,
236 &key, &data, R_NOOVERWRITE)) {
241 warnx("ignored duplicate: %.*s",
242 (int)key.size, (char *)key.data);
253 err(1, "file argument");
256 errx(1, "potential reference loop detected");
261 (void)printf("cap_mkdb: %d capability records\n", reccnt);
267 (void)fprintf(stderr,
268 "usage: cap_mkdb [-b | -l] [-v] [-f outfile] file ...\n");