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 8.1 (Berkeley) 6/6/93";
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];
69 * Mkcapdb creates a capability hash database for quick retrieval of capability
70 * records. The database contains 2 types of entries: records and references
71 * marked by the first byte in the data. A record entry contains the actual
72 * capability record whereas a reference contains the name (key) under which
73 * the correct record is stored.
76 main(int argc, char *argv[])
81 while ((c = getopt(argc, argv, "f:v")) != -1) {
101 * The database file is the first argument if no name is specified.
102 * Make arrangements to unlink it if exit badly.
104 (void)snprintf(buf, sizeof(buf), "%s.db", capname ? capname : *argv);
105 if ((capname = strdup(buf)) == NULL)
106 errx(1, "strdup failed");
107 if ((capdbp = dbopen(capname,
108 O_CREAT | O_TRUNC | O_RDWR, DEFFILEMODE, DB_HASH, NULL)) == NULL)
111 if (atexit(dounlink))
116 if (capdbp->close(capdbp) < 0)
117 err(1, "%s", capname);
126 (void)unlink(capname);
130 * Any changes to these definitions should be made also in the getcap(3)
133 #define RECOK (char)0
134 #define TCERR (char)1
135 #define SHADOW (char)2
138 * Db_build() builds the name and capability databases according to the
142 db_build(char **ifiles)
152 for (reccnt = 0, bplen = 0; (st = cgetnext(&bp, ifiles)) > 0;) {
155 * Allocate enough memory to store record, terminating
156 * NULL and one extra byte.
159 if (bplen <= len + 2) {
160 bplen += MAX(256, len + 2);
161 if ((data.data = realloc(data.data, bplen)) == NULL)
162 errx(1, "malloc failed");
165 /* Find the end of the name field. */
166 if ((p = strchr(bp, ':')) == NULL) {
167 warnx("no name field: %.*s", (int)MIN(len, 20), bp);
171 /* First byte of stored record indicates status. */
174 ((char *)(data.data))[0] = RECOK;
177 ((char *)(data.data))[0] = TCERR;
178 warnx("record not tc expanded: %.*s", (int)(p - bp),
183 /* Create the stored record. */
184 memmove(&((u_char *)(data.data))[1], bp, len + 1);
187 /* Store the record under the name field. */
191 switch(capdbp->put(capdbp, &key, &data, R_NOOVERWRITE)) {
196 warnx("ignored duplicate: %.*s",
197 (int)key.size, (char *)key.data);
202 /* If only one name, ignore the rest. */
204 if (strchr(bp, '|') == NULL)
208 /* The rest of the names reference the entire name. */
209 ((char *)(data.data))[0] = SHADOW;
210 memmove(&((u_char *)(data.data))[1], key.data, key.size);
211 data.size = key.size + 1;
213 /* Store references for other names. */
214 for (p = t = bp;; ++p) {
215 if (p > t && (*p == ':' || *p == '|')) {
218 switch(capdbp->put(capdbp,
219 &key, &data, R_NOOVERWRITE)) {
224 warnx("ignored duplicate: %.*s",
225 (int)key.size, (char *)key.data);
236 err(1, "file argument");
239 errx(1, "potential reference loop detected");
244 (void)printf("cap_mkdb: %d capability records\n", reccnt);
250 (void)fprintf(stderr,
251 "usage: cap_mkdb [-v] [-f outfile] file [file ...]\n");