1/*	$NetBSD: info_ndbm.c,v 1.1.1.2 2009/03/20 20:26:49 christos Exp $	*/
2
3/*
4 * Copyright (c) 1997-2009 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. All advertising materials mentioning features or use of this software
22 *    must display the following acknowledgment:
23 *      This product includes software developed by the University of
24 *      California, Berkeley and its contributors.
25 * 4. Neither the name of the University nor the names of its contributors
26 *    may be used to endorse or promote products derived from this software
27 *    without specific prior written permission.
28 *
29 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
30 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
31 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
32 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
33 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
34 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
35 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
36 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
37 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
38 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
39 * SUCH DAMAGE.
40 *
41 *
42 * File: am-utils/amd/info_ndbm.c
43 *
44 */
45
46/*
47 * Get info from NDBM map
48 */
49
50#ifdef HAVE_CONFIG_H
51# include <config.h>
52#endif /* HAVE_CONFIG_H */
53#include <am_defs.h>
54#include <amd.h>
55#include <sun_map.h>
56
57/* forward declarations */
58int ndbm_init(mnt_map *m, char *map, time_t *tp);
59int ndbm_mtime(mnt_map *m, char *map, time_t *tp);
60int ndbm_search(mnt_map *m, char *map, char *key, char **pval, time_t *tp);
61
62
63static int
64search_ndbm(mnt_map *m, DBM *db, char *key, char **val)
65{
66  datum k, v;
67
68  k.dptr = key;
69  k.dsize = strlen(key) + 1;
70  v = dbm_fetch(db, k);
71  if (v.dptr) {
72    if (m->cfm && (m->cfm->cfm_flags & CFM_SUN_MAP_SYNTAX))
73      *val = sun_entry2amd(key, v.dptr);
74    else
75      *val = strdup(v.dptr);
76    return 0;
77  }
78  return ENOENT;
79}
80
81
82int
83ndbm_search(mnt_map *m, char *map, char *key, char **pval, time_t *tp)
84{
85  DBM *db;
86
87  db = dbm_open(map, O_RDONLY, 0);
88  if (db) {
89    struct stat stb;
90    int error;
91#ifdef DBM_SUFFIX
92    char dbfilename[256];
93
94    xstrlcpy(dbfilename, map, sizeof(dbfilename));
95    xstrlcat(dbfilename, DBM_SUFFIX, sizeof(dbfilename));
96    error = stat(dbfilename, &stb);
97#else /* not DBM_SUFFIX */
98    error = fstat(dbm_pagfno(db), &stb);
99#endif /* not DBM_SUFFIX */
100    if (!error && *tp < stb.st_mtime) {
101      *tp = stb.st_mtime;
102      error = -1;
103    } else {
104      error = search_ndbm(m, db, key, pval);
105    }
106    (void) dbm_close(db);
107    return error;
108  }
109  return errno;
110}
111
112
113int
114ndbm_init(mnt_map *m, char *map, time_t *tp)
115{
116  DBM *db;
117
118  db = dbm_open(map, O_RDONLY, 0);
119  if (db) {
120    struct stat stb;
121    int error;
122#ifdef DBM_SUFFIX
123    char dbfilename[256];
124
125    xstrlcpy(dbfilename, map, sizeof(dbfilename));
126    xstrlcat(dbfilename, DBM_SUFFIX, sizeof(dbfilename));
127    error = stat(dbfilename, &stb);
128#else /* not DBM_SUFFIX */
129    error = fstat(dbm_pagfno(db), &stb);
130#endif /* not DBM_SUFFIX */
131    if (error < 0)
132      *tp = clocktime(NULL);
133    else
134      *tp = stb.st_mtime;
135    dbm_close(db);
136    return 0;
137  }
138  return errno;
139}
140
141
142int
143ndbm_mtime(mnt_map *m, char *map, time_t *tp)
144{
145  return ndbm_init(m,map, tp);
146}
147