2 * Copyright (c) 1992, 1993
3 * The Regents of the University of California. All rights reserved.
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6 * modification, are permitted provided that the following conditions
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13 * 3. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
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19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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29 * @(#) Copyright (c) 1992, 1993 The Regents of the University of California. All rights reserved.
30 * @(#)cap_mkdb.c 8.1 (Berkeley) 6/6/93
31 * $FreeBSD: src/usr.bin/cap_mkdb/cap_mkdb.c,v 1.14 2005/02/22 23:29:53 ru Exp $
34 #include <sys/param.h>
45 static void db_build(char **);
46 static void dounlink(void);
47 static void usage(void) __dead2;
51 static char *capname, buf[8 * 1024];
53 static HASHINFO openinfo = {
63 * Mkcapdb creates a capability hash database for quick retrieval of capability
64 * records. The database contains 2 types of entries: records and references
65 * marked by the first byte in the data. A record entry contains the actual
66 * capability record whereas a reference contains the name (key) under which
67 * the correct record is stored.
70 main(int argc, char **argv)
76 while ((c = getopt(argc, argv, "bf:lv")) != -1) {
82 byteorder = c == 'b' ? 4321 : 1234;
101 /* Set byte order. */
102 openinfo.lorder = byteorder;
105 * The database file is the first argument if no name is specified.
106 * Make arrangements to unlink it if exit badly.
108 (void)snprintf(buf, sizeof(buf), "%s.db", capname ? capname : *argv);
109 if ((capname = strdup(buf)) == NULL)
110 errx(1, "strdup failed");
111 if ((capdbp = dbopen(capname, O_CREAT | O_TRUNC | O_RDWR,
112 DEFFILEMODE, DB_HASH, &openinfo)) == NULL)
115 if (atexit(dounlink))
120 if (capdbp->close(capdbp) < 0)
121 err(1, "%s", capname);
130 (void)unlink(capname);
134 * Any changes to these definitions should be made also in the getcap(3)
137 #define RECOK (char)0
138 #define TCERR (char)1
139 #define SHADOW (char)2
142 * Db_build() builds the name and capability databases according to the
146 db_build(char **ifiles)
156 for (reccnt = 0, bplen = 0; (st = cgetnext(&bp, ifiles)) > 0;) {
159 * Allocate enough memory to store record, terminating
160 * NULL and one extra byte.
163 if (bplen <= len + 2) {
164 bplen += MAX(256, len + 2);
165 if ((data.data = realloc(data.data, bplen)) == NULL)
166 errx(1, "malloc failed");
169 /* Find the end of the name field. */
170 if ((p = strchr(bp, ':')) == NULL) {
171 warnx("no name field: %.*s", (int)MIN(len, 20), bp);
175 /* First byte of stored record indicates status. */
178 ((char *)(data.data))[0] = RECOK;
181 ((char *)(data.data))[0] = TCERR;
182 warnx("record not tc expanded: %.*s", (int)(p - bp),
187 /* Create the stored record. */
188 memmove(&((u_char *)(data.data))[1], bp, len + 1);
191 /* Store the record under the name field. */
195 switch(capdbp->put(capdbp, &key, &data, R_NOOVERWRITE)) {
200 warnx("ignored duplicate: %.*s",
201 (int)key.size, (char *)key.data);
206 /* If only one name, ignore the rest. */
208 if (strchr(bp, '|') == NULL)
212 /* The rest of the names reference the entire name. */
213 ((char *)(data.data))[0] = SHADOW;
214 memmove(&((u_char *)(data.data))[1], key.data, key.size);
215 data.size = key.size + 1;
217 /* Store references for other names. */
218 for (p = t = bp;; ++p) {
219 if (p > t && (*p == ':' || *p == '|')) {
222 switch(capdbp->put(capdbp,
223 &key, &data, R_NOOVERWRITE)) {
228 warnx("ignored duplicate: %.*s",
229 (int)key.size, (char *)key.data);
240 err(1, "file argument");
243 errx(1, "potential reference loop detected");
248 (void)printf("cap_mkdb: %d capability records\n", reccnt);
254 (void)fprintf(stderr,
255 "usage: cap_mkdb [-b | -l] [-v] [-f outfile] file ...\n");