1 /* $NetBSD: info_ndbm.c,v 1.1.1.3 2015/01/17 16:34:15 christos Exp $ */
2
3 /*
4 * Copyright (c) 1997-2014 Erez Zadok
5 * Copyright (c) 1989 Jan-Simon Pendry
6 * Copyright (c) 1989 Imperial College of Science, Technology & Medicine
7 * Copyright (c) 1989 The Regents of the University of California.
8 * All rights reserved.
9 *
10 * This code is derived from software contributed to Berkeley by
11 * Jan-Simon Pendry at Imperial College, London.
12 *
13 * Redistribution and use in source and binary forms, with or without
14 * modification, are permitted provided that the following conditions
15 * are met:
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 * 3. Neither the name of the University nor the names of its contributors
22 * may be used to endorse or promote products derived from this software
23 * without specific prior written permission.
24 *
25 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
28 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35 * SUCH DAMAGE.
36 *
37 *
38 * File: am-utils/amd/info_ndbm.c
39 *
40 */
41
42 /*
43 * Get info from NDBM map
44 */
45
46 #ifdef HAVE_CONFIG_H
47 # include <config.h>
48 #endif /* HAVE_CONFIG_H */
49 #include <am_defs.h>
50 #include <amd.h>
51 #include <sun_map.h>
52
53 /* forward declarations */
54 int ndbm_init(mnt_map *m, char *map, time_t *tp);
55 int ndbm_mtime(mnt_map *m, char *map, time_t *tp);
56 int ndbm_search(mnt_map *m, char *map, char *key, char **pval, time_t *tp);
57
58
59 static int
search_ndbm(mnt_map * m,DBM * db,char * key,char ** val)60 search_ndbm(mnt_map *m, DBM *db, char *key, char **val)
61 {
62 datum k, v;
63
64 k.dptr = key;
65 k.dsize = strlen(key) + 1;
66 v = dbm_fetch(db, k);
67 if (v.dptr) {
68 if (m->cfm && (m->cfm->cfm_flags & CFM_SUN_MAP_SYNTAX))
69 *val = sun_entry2amd(key, v.dptr);
70 else
71 *val = xstrdup(v.dptr);
72 return 0;
73 }
74 return ENOENT;
75 }
76
77
78 int
ndbm_search(mnt_map * m,char * map,char * key,char ** pval,time_t * tp)79 ndbm_search(mnt_map *m, char *map, char *key, char **pval, time_t *tp)
80 {
81 DBM *db;
82
83 db = dbm_open(map, O_RDONLY, 0);
84 if (db) {
85 struct stat stb;
86 int error;
87 #ifdef DBM_SUFFIX
88 char dbfilename[256];
89
90 xstrlcpy(dbfilename, map, sizeof(dbfilename));
91 xstrlcat(dbfilename, DBM_SUFFIX, sizeof(dbfilename));
92 error = stat(dbfilename, &stb);
93 #else /* not DBM_SUFFIX */
94 error = fstat(dbm_pagfno(db), &stb);
95 #endif /* not DBM_SUFFIX */
96 if (!error && *tp < stb.st_mtime) {
97 *tp = stb.st_mtime;
98 error = -1;
99 } else {
100 error = search_ndbm(m, db, key, pval);
101 }
102 (void) dbm_close(db);
103 return error;
104 }
105 return errno;
106 }
107
108
109 int
ndbm_init(mnt_map * m,char * map,time_t * tp)110 ndbm_init(mnt_map *m, char *map, time_t *tp)
111 {
112 DBM *db;
113
114 db = dbm_open(map, O_RDONLY, 0);
115 if (db) {
116 struct stat stb;
117 int error;
118 #ifdef DBM_SUFFIX
119 char dbfilename[256];
120
121 xstrlcpy(dbfilename, map, sizeof(dbfilename));
122 xstrlcat(dbfilename, DBM_SUFFIX, sizeof(dbfilename));
123 error = stat(dbfilename, &stb);
124 #else /* not DBM_SUFFIX */
125 error = fstat(dbm_pagfno(db), &stb);
126 #endif /* not DBM_SUFFIX */
127 if (error < 0)
128 *tp = clocktime(NULL);
129 else
130 *tp = stb.st_mtime;
131 dbm_close(db);
132 return 0;
133 }
134 return errno;
135 }
136
137
138 int
ndbm_mtime(mnt_map * m,char * map,time_t * tp)139 ndbm_mtime(mnt_map *m, char *map, time_t *tp)
140 {
141 return ndbm_init(m,map, tp);
142 }
143