1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
|
/*-
* See the file LICENSE for redistribution information.
*
* Copyright (c) 1996, 1997, 1998
* Sleepycat Software. All rights reserved.
*/
#include "config.h"
#ifndef lint
static const char copyright[] =
"@(#) Copyright (c) 1996, 1997, 1998\n\
Sleepycat Software Inc. All rights reserved.\n";
static const char sccsid[] = "@(#)db_dump.c 10.24 (Sleepycat) 11/22/98";
#endif
#ifndef NO_SYSTEM_INCLUDES
#include <sys/types.h>
#include <ctype.h>
#include <errno.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#endif
#undef stat
#include "db_int.h"
#include "db_page.h"
#include "btree.h"
#include "hash.h"
#include "clib_ext.h"
void configure __P((char *));
DB_ENV *db_init __P((char *));
int main __P((int, char *[]));
void pheader __P((DB *, int));
void usage __P((void));
const char
*progname = "db_dump"; /* Program name. */
int
main(argc, argv)
int argc;
char *argv[];
{
extern char *optarg;
extern int optind;
DB *dbp;
DBC *dbcp;
DBT key, data;
DB_ENV *dbenv;
int ch, checkprint, dflag;
char *home;
home = NULL;
checkprint = dflag = 0;
while ((ch = getopt(argc, argv, "df:h:Np")) != EOF)
switch (ch) {
case 'd':
dflag = 1;
break;
case 'f':
if (freopen(optarg, "w", stdout) == NULL)
err(1, "%s", optarg);
break;
case 'h':
home = optarg;
break;
case 'N':
(void)db_value_set(0, DB_MUTEXLOCKS);
break;
case 'p':
checkprint = 1;
break;
case '?':
default:
usage();
}
argc -= optind;
argv += optind;
if (argc != 1)
usage();
if (dflag && checkprint)
errx(1, "the -d and -p options may not both be specified");
/* Initialize the environment. */
dbenv = db_init(home);
/* Open the DB file. */
if ((errno =
db_open(argv[0], DB_UNKNOWN, DB_RDONLY, 0, dbenv, NULL, &dbp)) != 0)
err(1, "%s", argv[0]);
/* DB dump. */
if (dflag) {
(void)__db_dump(dbp, NULL, 1);
if ((errno = dbp->close(dbp, 0)) != 0)
err(1, "close");
exit (0);
}
/* Get a cursor and step through the database. */
if ((errno = dbp->cursor(dbp, NULL, &dbcp, 0)) != 0) {
(void)dbp->close(dbp, 0);
err(1, "cursor");
}
/* Print out the header. */
pheader(dbp, checkprint);
/* Print out the key/data pairs. */
memset(&key, 0, sizeof(key));
memset(&data, 0, sizeof(data));
while ((errno = dbcp->c_get(dbcp, &key, &data, DB_NEXT)) == 0) {
if (dbp->type != DB_RECNO &&
(errno = __db_prdbt(&key, checkprint, stdout)) != 0)
break;
if ((errno = __db_prdbt(&data, checkprint, stdout)) != 0)
break;
}
if (errno != DB_NOTFOUND)
err(1, "cursor get");
if ((errno = dbp->close(dbp, 0)) != 0)
err(1, "close");
return (0);
}
/*
* db_init --
* Initialize the environment.
*/
DB_ENV *
db_init(home)
char *home;
{
DB_ENV *dbenv;
if ((dbenv = (DB_ENV *)calloc(1, sizeof(DB_ENV))) == NULL) {
errno = ENOMEM;
err(1, NULL);
}
/*
* Try and use the shared mpool region so that we get pages that
* haven't been flushed to disk (mostly useful for debugging).
* If that fails, try again, without the DB_INIT_MPOOL flag.
*
* If it works, set the error output options so that future errors
* are correctly reported.
*/
if ((errno = db_appinit(home,
NULL, dbenv, DB_USE_ENVIRON | DB_INIT_MPOOL)) == 0) {
dbenv->db_errfile = stderr;
dbenv->db_errpfx = progname;
return (dbenv);
}
/* Set the error output options -- this time we want a message. */
memset(dbenv, 0, sizeof(*dbenv));
dbenv->db_errfile = stderr;
dbenv->db_errpfx = progname;
/* Try again, and it's fatal if we fail. */
if ((errno = db_appinit(home, NULL, dbenv, DB_USE_ENVIRON)) != 0)
err(1, "db_appinit");
return (dbenv);
}
/*
* pheader --
* Write out the header information.
*/
void
pheader(dbp, pflag)
DB *dbp;
int pflag;
{
DBC *dbc;
DB_BTREE_STAT *btsp;
HASH_CURSOR *hcp;
int ret;
printf("format=%s\n", pflag ? "print" : "bytevalue");
switch (dbp->type) {
case DB_BTREE:
printf("type=btree\n");
if ((errno = dbp->stat(dbp, &btsp, NULL, 0)) != 0)
err(1, "dbp->stat");
if (F_ISSET(dbp, DB_BT_RECNUM))
printf("recnum=1\n");
if (btsp->bt_maxkey != 0)
printf("bt_maxkey=%lu\n", (u_long)btsp->bt_maxkey);
if (btsp->bt_minkey != 0)
printf("bt_minkey=%lu\n", (u_long)btsp->bt_minkey);
break;
case DB_HASH:
printf("type=hash\n");
if ((ret = dbp->cursor(dbp, NULL, &dbc, 0)) != 0)
break;
hcp = (HASH_CURSOR *)dbc->internal;
GET_META(dbp, hcp, ret);
if (ret == 0) {
if (hcp->hdr->ffactor != 0)
printf("h_ffactor=%lu\n",
(u_long)hcp->hdr->ffactor);
if (hcp->hdr->nelem != 0)
printf("h_nelem=%lu\n",
(u_long)hcp->hdr->nelem);
RELEASE_META(dbp, hcp);
}
(void)dbc->c_close(dbc);
break;
case DB_RECNO:
printf("type=recno\n");
if ((errno = dbp->stat(dbp, &btsp, NULL, 0)) != 0)
err(1, "dbp->stat");
if (F_ISSET(dbp, DB_RE_RENUMBER))
printf("renumber=1\n");
if (F_ISSET(dbp, DB_RE_FIXEDLEN))
printf("re_len=%lu\n", (u_long)btsp->bt_re_len);
if (F_ISSET(dbp, DB_RE_PAD))
printf("re_pad=%#x\n", btsp->bt_re_pad);
break;
case DB_UNKNOWN:
abort();
/* NOTREACHED */
}
if (F_ISSET(dbp, DB_AM_DUP))
printf("duplicates=1\n");
if (dbp->dbenv->db_lorder != 0)
printf("db_lorder=%lu\n", (u_long)dbp->dbenv->db_lorder);
if (!F_ISSET(dbp, DB_AM_PGDEF))
printf("db_pagesize=%lu\n", (u_long)dbp->pgsize);
printf("HEADER=END\n");
}
/*
* usage --
* Display the usage message.
*/
void
usage()
{
(void)fprintf(stderr,
"usage: db_dump [-dNp] [-f file] [-h home] db_file\n");
exit(1);
}
|
