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
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23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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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 1.4 2003/11/03 19:31:28 eirikn Exp $
39 #include <sys/param.h>
50 int main(int, char *[]);
51 void db_build(char **);
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.
67 main(int argc, char **argv)
72 while ((c = getopt(argc, argv, "f:v")) != -1) {
92 * The database file is the first argument if no name is specified.
93 * Make arrangements to unlink it if exit badly.
95 (void)snprintf(buf, sizeof(buf), "%s.db", capname ? capname : *argv);
96 if ((capname = strdup(buf)) == NULL)
97 errx(1, "strdup failed");
98 if ((capdbp = dbopen(capname,
99 O_CREAT | O_TRUNC | O_RDWR, DEFFILEMODE, DB_HASH, NULL)) == NULL)
102 if (atexit(dounlink))
107 if (capdbp->close(capdbp) < 0)
108 err(1, "%s", capname);
117 (void)unlink(capname);
121 * Any changes to these definitions should be made also in the getcap(3)
124 #define RECOK (char)0
125 #define TCERR (char)1
126 #define SHADOW (char)2
129 * Db_build() builds the name and capability databases according to the
133 db_build(char **ifiles)
143 for (reccnt = 0, bplen = 0; (st = cgetnext(&bp, ifiles)) > 0;) {
146 * Allocate enough memory to store record, terminating
147 * NULL and one extra byte.
150 if (bplen <= len + 2) {
151 bplen += MAX(256, len + 2);
152 if ((data.data = realloc(data.data, bplen)) == NULL)
153 errx(1, "malloc failed");
156 /* Find the end of the name field. */
157 if ((p = strchr(bp, ':')) == NULL) {
158 warnx("no name field: %.*s", (int)MIN(len, 20), bp);
162 /* First byte of stored record indicates status. */
165 ((char *)(data.data))[0] = RECOK;
168 ((char *)(data.data))[0] = TCERR;
169 warnx("record not tc expanded: %.*s", (int)(p - bp),
174 /* Create the stored record. */
175 memmove(&((u_char *)(data.data))[1], bp, len + 1);
178 /* Store the record under the name field. */
182 switch(capdbp->put(capdbp, &key, &data, R_NOOVERWRITE)) {
187 warnx("ignored duplicate: %.*s",
188 (int)key.size, (char *)key.data);
193 /* If only one name, ignore the rest. */
195 if (strchr(bp, '|') == NULL)
199 /* The rest of the names reference the entire name. */
200 ((char *)(data.data))[0] = SHADOW;
201 memmove(&((u_char *)(data.data))[1], key.data, key.size);
202 data.size = key.size + 1;
204 /* Store references for other names. */
205 for (p = t = bp;; ++p) {
206 if (p > t && (*p == ':' || *p == '|')) {
209 switch(capdbp->put(capdbp,
210 &key, &data, R_NOOVERWRITE)) {
215 warnx("ignored duplicate: %.*s",
216 (int)key.size, (char *)key.data);
227 err(1, "file argument");
230 errx(1, "potential reference loop detected");
235 (void)printf("cap_mkdb: %d capability records\n", reccnt);
241 (void)fprintf(stderr,
242 "usage: cap_mkdb [-v] [-f outfile] file [file ...]\n");