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
35 static const char copyright[] =
36 "@(#) Copyright (c) 1992, 1993\n\
37 The Regents of the University of California. All rights reserved.\n";
42 static char sccsid[] = "@(#)cap_mkdb.c 8.2 (Berkeley) 4/27/95";
46 #include <sys/cdefs.h>
47 __FBSDID("$FreeBSD$");
49 #include <sys/param.h>
60 void db_build(char **);
66 char *capdb, *capname, buf[8 * 1024];
78 * Mkcapdb creates a capability hash database for quick retrieval of capability
79 * records. The database contains 2 types of entries: records and references
80 * marked by the first byte in the data. A record entry contains the actual
81 * capability record whereas a reference contains the name (key) under which
82 * the correct record is stored.
85 main(int argc, char *argv[])
90 while ((c = getopt(argc, argv, "f:v")) != -1) {
110 * The database file is the first argument if no name is specified.
111 * Make arrangements to unlink it if exit badly.
113 (void)snprintf(buf, sizeof(buf), "%s.db", capname ? capname : *argv);
114 if ((capname = strdup(buf)) == NULL)
115 errx(1, "strdup failed");
116 if ((capdbp = dbopen(capname, O_CREAT | O_TRUNC | O_RDWR,
117 DEFFILEMODE, DB_HASH, &openinfo)) == NULL)
120 if (atexit(dounlink))
125 if (capdbp->close(capdbp) < 0)
126 err(1, "%s", capname);
135 (void)unlink(capname);
139 * Any changes to these definitions should be made also in the getcap(3)
142 #define RECOK (char)0
143 #define TCERR (char)1
144 #define SHADOW (char)2
147 * Db_build() builds the name and capability databases according to the
151 db_build(char **ifiles)
161 for (reccnt = 0, bplen = 0; (st = cgetnext(&bp, ifiles)) > 0;) {
164 * Allocate enough memory to store record, terminating
165 * NULL and one extra byte.
168 if (bplen <= len + 2) {
169 bplen += MAX(256, len + 2);
170 if ((data.data = realloc(data.data, bplen)) == NULL)
171 errx(1, "malloc failed");
174 /* Find the end of the name field. */
175 if ((p = strchr(bp, ':')) == NULL) {
176 warnx("no name field: %.*s", (int)MIN(len, 20), bp);
180 /* First byte of stored record indicates status. */
183 ((char *)(data.data))[0] = RECOK;
186 ((char *)(data.data))[0] = TCERR;
187 warnx("record not tc expanded: %.*s", (int)(p - bp),
192 /* Create the stored record. */
193 memmove(&((u_char *)(data.data))[1], bp, len + 1);
196 /* Store the record under the name field. */
200 switch(capdbp->put(capdbp, &key, &data, R_NOOVERWRITE)) {
205 warnx("ignored duplicate: %.*s",
206 (int)key.size, (char *)key.data);
211 /* If only one name, ignore the rest. */
213 if (strchr(bp, '|') == NULL)
217 /* The rest of the names reference the entire name. */
218 ((char *)(data.data))[0] = SHADOW;
219 memmove(&((u_char *)(data.data))[1], key.data, key.size);
220 data.size = key.size + 1;
222 /* Store references for other names. */
223 for (p = t = bp;; ++p) {
224 if (p > t && (*p == ':' || *p == '|')) {
227 switch(capdbp->put(capdbp,
228 &key, &data, R_NOOVERWRITE)) {
233 warnx("ignored duplicate: %.*s",
234 (int)key.size, (char *)key.data);
245 err(1, "file argument");
248 errx(1, "potential reference loop detected");
253 (void)printf("cap_mkdb: %d capability records\n", reccnt);
259 (void)fprintf(stderr,
260 "usage: cap_mkdb [-v] [-f outfile] file [file ...]\n");