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[])
91 while ((c = getopt(argc, argv, "bf:lv")) != -1) {
97 byteorder = c == 'b' ? 4321 : 1234;
116 /* Set byte order. */
117 openinfo.lorder = byteorder;
120 * The database file is the first argument if no name is specified.
121 * Make arrangements to unlink it if exit badly.
123 (void)snprintf(buf, sizeof(buf), "%s.db", capname ? capname : *argv);
124 if ((capname = strdup(buf)) == NULL)
125 errx(1, "strdup failed");
126 if ((capdbp = dbopen(capname, O_CREAT | O_TRUNC | O_RDWR,
127 DEFFILEMODE, DB_HASH, &openinfo)) == NULL)
130 if (atexit(dounlink))
135 if (capdbp->close(capdbp) < 0)
136 err(1, "%s", capname);
145 (void)unlink(capname);
149 * Any changes to these definitions should be made also in the getcap(3)
152 #define RECOK (char)0
153 #define TCERR (char)1
154 #define SHADOW (char)2
157 * Db_build() builds the name and capability databases according to the
161 db_build(char **ifiles)
171 for (reccnt = 0, bplen = 0; (st = cgetnext(&bp, ifiles)) > 0;) {
174 * Allocate enough memory to store record, terminating
175 * NULL and one extra byte.
178 if (bplen <= len + 2) {
179 bplen += MAX(256, len + 2);
180 if ((data.data = realloc(data.data, bplen)) == NULL)
181 errx(1, "malloc failed");
184 /* Find the end of the name field. */
185 if ((p = strchr(bp, ':')) == NULL) {
186 warnx("no name field: %.*s", (int)MIN(len, 20), bp);
190 /* First byte of stored record indicates status. */
193 ((char *)(data.data))[0] = RECOK;
196 ((char *)(data.data))[0] = TCERR;
197 warnx("record not tc expanded: %.*s", (int)(p - bp),
202 /* Create the stored record. */
203 memmove(&((u_char *)(data.data))[1], bp, len + 1);
206 /* Store the record under the name field. */
210 switch(capdbp->put(capdbp, &key, &data, R_NOOVERWRITE)) {
215 warnx("ignored duplicate: %.*s",
216 (int)key.size, (char *)key.data);
221 /* If only one name, ignore the rest. */
223 if (strchr(bp, '|') == NULL)
227 /* The rest of the names reference the entire name. */
228 ((char *)(data.data))[0] = SHADOW;
229 memmove(&((u_char *)(data.data))[1], key.data, key.size);
230 data.size = key.size + 1;
232 /* Store references for other names. */
233 for (p = t = bp;; ++p) {
234 if (p > t && (*p == ':' || *p == '|')) {
237 switch(capdbp->put(capdbp,
238 &key, &data, R_NOOVERWRITE)) {
243 warnx("ignored duplicate: %.*s",
244 (int)key.size, (char *)key.data);
255 err(1, "file argument");
258 errx(1, "potential reference loop detected");
263 (void)printf("cap_mkdb: %d capability records\n", reccnt);
269 (void)fprintf(stderr,
270 "usage: cap_mkdb [-b | -l] [-v] [-f outfile] file ...\n");