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GNU GENERAL PUBLIC LICENSE
Version 2, June 1991
Copyright (C) 1989, 1991 Free Software Foundation, Inc.
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GNU LIBRARY GENERAL PUBLIC LICENSE
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Appendix: How to Apply These Terms to Your New Libraries
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possible use to the public, we recommend making it free software that
everyone can redistribute and change. You can do so by permitting
redistribution under these terms (or, alternatively, under the terms of the
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To apply these terms, attach the following notices to the library. It is
safest to attach them to the start of each source file to most effectively
convey the exclusion of warranty; and each file should have at least the
"copyright" line and a pointer to where the full notice is found.
<one line to give the library's name and a brief idea of what it does.>
Copyright (C) <year> <name of author>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this library; if not, write to the Free
Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
Also add information on how to contact you by electronic and paper mail.
You should also get your employer (if you work as a programmer) or your
school, if any, to sign a "copyright disclaimer" for the library, if
necessary. Here is a sample; alter the names:
Yoyodyne, Inc., hereby disclaims all copyright interest in the
library `Frob' (a library for tweaking knobs) written by James Random Hacker.
<signature of Ty Coon>, 1 April 1990
Ty Coon, President of Vice
That's all there is to it!

128
HACKERS Normal file
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Ok, this is a brain-dump of everything I've learned about MDB files. I'm am
using Access 97, so everything I say applies to that and maybe or maybe not
other versions.
Right, so here goes:
Note: It appears that much of the data in the pages is unitialized garbage.
This makes the task of figuring out the format a bit more challenging.
Pages
-----
MDB files are a set of pages. These pages are 2K (2048 bytes) in size, so in a
hex dump of the data they start on adreeses like xxx000 and xxx800.
The first byte of each page seems to be a type indentifier for instance the
first page in the mdb file is 0x00, which no other pages seems to share. Other
pages have values of 0x01, 0x02, 0x03, 0x04 though the exact meaning of these
is currently a mystery. (0x04 seems to be data I guess).
The second byte is always 0x01 as far as I can tell.
At some point in the file the page layout is apparently abandoned though the
very last 2K in the file again looks like a valid page. The purpose of this
non-paged region is so far unknown .
Bytes after the first and second seemed to depend on the type of page, although bytes 4-7 seem to indicate a page type of some sort. 02 00 00 00 is found on all catalog pages.
Pages seem to have two parts, a header and a data portion. The header starts
at the front of the page and builds up. The data is packed to the end of the
page. This means the last byte of the data portion is the last byte of the
page.
Byte Order
----------
All offsets to data within the file are in little endian (intel) order
Catalogs
--------
So far the first page of the catalog has always been seen at 0x9000 bytes into
the file. It is unclear whether this is always where it occurs, or whether a
pointer to this location exists elsewhere.
The header to the catalog page(s) start look something like this:
+------+---------+--------------------------------------------------------+
| 0x01 | 1 byte | Page type |
| 0x01 | 1 byte | Unknown |
| ???? | 2 bytes | A pointer of unknown use into the page |
| 0x02 | 1 byte | Unknown |
| 0x00 | 3 bytes | Possibly part of a 32 bit int including the 0x02 above |
| ???? | 2 bytes | a 16bit int of the number of records on this page |
+-------------------------------------------------------------------------+
| Iterate for the number of records |
+-------------------------------------------------------------------------+
| ???? | 2 bytes | offset to the records location on this page |
+-------------------------------------------------------------------------+
The rest of the data is packed to the end of the page, such that the last
record ends on byte 2047 (0 based).
Some of the offsets are not within the bounds of the page. The reason for this
is not presently understood and the current code discards them silently.
Little is understood of the meaning of the bytes that make up the records. They
vary in size, but portion prior to the objects name seems to be fixed. All
records start with a '0x11' and have a sequential number in the second byte
(disregarding system tables which share values and with other gaps). The best
way to explain this is the run the 'prcatalogs' table and look at the results.
Byte offset 9 from the beginning of the record contains it's type. Here is a
table of known types:
0x00 Form
0x01 User Table
0x02 Macro
0x03 System Table
0x04 Report
0x05 Query
0x06 Linked Table
0x07 Module
0x0b Unknown but used for two objects (AccessLayout and UserDefined)
Byte offset 31 from the begining of the record starts the object's name. I am
not presently aware of any field defining the length of the name, so the present
course of action has been to stop at the first non-printable character
(generally a 0x03 or 0x02)
After the name there is sometimes have (not yet determined why only sometimes)
a page pointer and offset to the KKD records (see below). There is also pointer to other catalog pages, but I'm not really sure how to parse those.
KKD Records
-----------
Table definitions look to be stored in 'KKD' records (my name for them...they
always start with 'KKD\0'). Again these reside on pages, packed to the end of
the page.
They look a little like this: (this needs work...see the kkd.c)
'K' 'K' 'D' 0x00
16 bit length value (this includes the length)
0x00 0x00
0x80 0x00 (0x80 seems to indicate a header)
Then one of more of: 16 bit length field and a value of that size.
For instance:
0x0d 0x00 and 'AccessVersion' (AccessVersion is 13 bytes, 0x0d 0x00 intel order)
Next comes one of more rows of data. (column names, descriptions, etc...)
16 bit length value (this includes the length)
0x00 0x00
0x00 0x00
16bit length field (this include the length itself)
4 bytes of unknown purpose
16 bit length field (non-inclusive)
value (07.53 for the AccessVersion example above)
See kkd.c for an examples, although it needs cleanup.
Futures
-------
Near term, I'd like to be able to pull the definitions for user tables out of
the MDB file and into a MySQL/Postgresql/Sybase/Oracle/DB2/etc... and then
populate the data across in one clean automated process.

26
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This is mdbtools version 0.001
This software is very, very pre-pre-pre-pre-alpha (did I make my point?), so
unless you know C and probably a little something about databases and reverse
engineering file formats, you're welcome to try it out but don't expect much if anything to work.
For the rest of you, read the HACKERS file for a description of where the code
stands and what has been gleened of the file format.
The initial goal of these tools is to be able to extract data structures and
data from mdb files. This goal may of course expand over time as the file
format becomes more well understood (if it ever does).
To install type 'make' and hope it works :-)
This will build three executables:
mdb-dump -- a simple hex dump utility that I've been using to look at mdb files
prcat -- print the catalog table from an mdb file (try offset 9000).
prkkd -- prints some info about a KKD record given the offset to it.
If you're interested in digging into the project let me know, and I'll try to get a mailing list together.
Brian Bruns
camber@ais.org

13
src/Makefile Normal file
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DIRS = extras libmdb util
all:
cd libmdb; make
cd util; make
cd extras; make
clean:
cd extras; make clean
cd util; make clean
cd libmdb; make clean

16
src/extras/Makefile Normal file
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CC = gcc
PROGS = mdb-dump
OBJS = dump.o
all: $(PROGS)
clean:
rm -f core *.o $(PROGS)
mdb-dump: dump.o
$(CC) -g -o $@ $<
.c.o:
$(CC) -g -c $<

39
src/extras/dump.c Normal file
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/* utility program to make a hex dump of a binary file (such as a mdb file) */
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <netdb.h>
#include <sys/types.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <time.h>
#include <limits.h>
#include <assert.h>
#include <ctype.h>
int main(int argc, char **argv)
{
long i=0;
int j;
unsigned char data[17];
FILE *in;
int length;
in = fopen(argv[1],"r");
while (length = fread(data,1,16,in)) {
fprintf(stdout, "%06x ", i);
i+=length;
for(j=0; j<length; j++) {
fprintf(stdout, "%02x ", data[j]);
}
fprintf(stdout, " |");
for(j=0; j<length; j++) {
fprintf(stdout, "%c", (isprint(data[j])) ? data[j] : '.');
}
fprintf(stdout, "|\n");
}
}

76
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/* MDB Tools - A library for reading MS Access database files
* Copyright (C) 2000 Brian Bruns
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifndef _mdbtools_h_
#define _mdbtools_h_
#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <ctype.h>
#include <string.h>
#define MDB_PGSIZE 2048
#define MDB_MAX_OBJ_NAME 30
#define MDB_CATALOG_PG 18
enum {
MDB_FORM = 0,
MDB_TABLE,
MDB_MACRO,
MDB_SYSTEM_TABLE,
MDB_REPORT,
MDB_QUERY,
MDB_LINKED_TABLE,
MDB_MODULE,
MDB_UNKNOWN_08,
MDB_UNKNOWN_09,
MDB_UNKNOWN_0A,
MDB_UNKNOWN_0B
};
typedef struct {
int fd;
char *filename;
unsigned long cur_pg;
unsigned int row_num;
unsigned int cur_pos;
unsigned char pg_buf[MDB_PGSIZE];
int cur_cat_entry;
} MDB_HANDLE;
typedef struct {
char object_name[MDB_MAX_OBJ_NAME+1];
int object_type;
unsigned long kkd_pg;
unsigned int kkd_rowid;
} MDB_CATALOG_ENTRY;
extern MDB_HANDLE *mdb_alloc_handle();
extern void mdb_free_handle(MDB_HANDLE *mdb);
extern size_t mdb_read_pg(MDB_HANDLE *mdb, unsigned long pg);
extern int mdb_get_int16(MDB_HANDLE *mdb, int offset);
extern long mdb_get_int32(MDB_HANDLE *mdb, int offset);
extern MDB_HANDLE *mdb_open(char *filename);
extern void mdb_catalog_dump(MDB_HANDLE *mdb, int obj_type);
extern int mdb_catalog_rows(MDB_HANDLE *mdb);
extern MDB_CATALOG_ENTRY *mdb_get_catalog_entry(MDB_HANDLE *mdb, int rowid, MDB_CATALOG_ENTRY *entry);
#endif /* _mdbtools_h_ */

15
src/libmdb/Makefile Normal file
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CC = gcc
INC = -I ../include
OBJS = catalog.o mem.o file.o
all: libmdb
libmdb: $(OBJS)
ar cq libmdb.a $(OBJS)
clean:
rm -f core *.o *.a
.c.o:
$(CC) -g -c $< $(INC)

108
src/libmdb/catalog.c Normal file
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/* MDB Tools - A library for reading MS Access database file
* Copyright (C) 2000 Brian Bruns
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include "mdbtools.h"
char *mdb_get_objtype_string(int obj_type)
{
static char *type_name[] = {"Form",
"Table",
"Macro",
"System Table",
"Report",
"Query",
"Linked Table",
"Module",
"Unknown 0x08",
"Unknown 0x09",
"Unknown 0x0a",
"Unknown 0x0b"
};
if (obj_type > 11) {
return NULL;
} else {
return type_name[obj_type];
}
}
MDB_CATALOG_ENTRY *mdb_catalog_entry(MDB_HANDLE *mdb, int rowid, MDB_CATALOG_ENTRY *entry)
{
int offset;
int rows;
int i,j;
rows = mdb_get_int16(mdb, 8);
if (rowid < 0 || rowid > rows) return NULL;
offset = mdb_get_int16(mdb, 10 + 2 * rowid);
/*
** ??? this happens, don't know what it means
*/
if (offset & 0xF000) return NULL;
/*
for (j=offset;j<offset+32;j++)
fprintf(stdout,"%02x ",mdb->pg_buf[j]);
fprintf(stdout,"\n");
*/
memset(entry, '\0', sizeof(MDB_CATALOG_ENTRY));
entry->object_type = mdb->pg_buf[offset+0x09];
j=0;
for (i=offset+31;isprint(mdb->pg_buf[i]);i++) {
if (j<=MDB_MAX_OBJ_NAME) {
entry->object_name[j++]=mdb->pg_buf[i];
}
}
entry->object_name[j] = '\0';
entry->kkd_pg = mdb_get_int16(mdb,offset+31+strlen(entry->object_name)+7);
entry->kkd_rowid = mdb->pg_buf[offset+31+strlen(entry->object_name)+6];
return entry;
}
int mdb_catalog_rows(MDB_HANDLE *mdb)
{
return mdb_get_int16(mdb, 0x08);
}
void mdb_catalog_dump(MDB_HANDLE *mdb, int obj_type)
{
int off, save_pos;
int rows;
int i,j;
unsigned char *buf;
MDB_CATALOG_ENTRY entry;
mdb_read_pg(mdb, MDB_CATALOG_PG);
rows = mdb_catalog_rows(mdb);
for (i=0;i<rows;i++) {
if (mdb_catalog_entry(mdb, i, &entry)) {
if (obj_type==-1 || obj_type==entry.object_type) {
fprintf(stdout,"Type: %-15s Name: %-30s KKD pg: %04x row: %2d\n",
mdb_get_objtype_string(entry.object_type),
entry.object_name,
entry.kkd_pg,
entry.kkd_rowid);
}
}
}
}

103
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/* MDB Tools - A library for reading MS Access database files
* Copyright (C) 2000 Brian Bruns
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include "mdbtools.h"
MDB_HANDLE *mdb_open(char *filename)
{
MDB_HANDLE *mdb;
mdb = mdb_alloc_handle();
mdb->filename = (char *) malloc(strlen(filename)+1);
strcpy(mdb->filename, filename);
mdb->fd = open(filename,O_RDONLY);
if (mdb->fd==-1) {
fprintf(stderr,"Couldn't open file %s\n",filename);
return NULL;
}
return mdb;
}
/*
** mdb_read a wrapper for read that bails if anything is wrong
*/
size_t mdb_read_pg(MDB_HANDLE *mdb, unsigned long pg)
{
size_t len;
off_t offset = pg * MDB_PGSIZE;
struct stat status;
fstat(mdb->fd, &status);
if (status.st_size < offset) {
fprintf(stderr,"offset %lu is beyond EOF\n",offset);
return 0;
}
lseek(mdb->fd, offset, SEEK_SET);
len = read(mdb->fd,mdb->pg_buf,MDB_PGSIZE);
if (len==-1) {
perror("read");
return 0;
}
else if (len<MDB_PGSIZE) {
fprintf(stderr,"EOF reached.\n");
return 0;
}
return len;
}
int mdb_get_int16(MDB_HANDLE *mdb, int offset)
{
unsigned char *c;
int i;
if (offset < 0 || offset+2 > MDB_PGSIZE) return -1;
c = &mdb->pg_buf[offset];
i = c[1]*256+c[0];
mdb->cur_pos+=2;
return i;
}
long mdb_get_int32(MDB_HANDLE *mdb, int offset)
{
long l;
unsigned char *c;
if (offset <0 || offset+4 > MDB_PGSIZE) return -1;
c = &mdb->pg_buf[offset];
l =c[3]; l<<=8;
l+=c[2]; l<<=8;
l+=c[1]; l<<=8;
l+=c[0];
mdb->cur_pos+=4;
return l;
}
int mdb_set_pos(MDB_HANDLE *mdb, int pos)
{
if (pos<0 || pos >= MDB_PGSIZE) return 0;
mdb->cur_pos=pos;
return pos;
}
int mdb_get_pos(MDB_HANDLE *mdb)
{
return mdb->cur_pos;
}

140
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/* MDB Tools - A library for reading MS Access database file
* Copyright (C) 2000 Brian Bruns
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include "mdbtools.h"
/*
** Note: This code is mostly garbage right now...just a test to parse out the
** KKD structures.
*/
void mdb_kkd_dump(MDB_HANDLE *mdb, int rowid)
{
int rows;
int kkd_start, kkd_end;
int i, j, tmp, pos, row_type, hdrpos=0, datapos=0;
int len;
int col_type, col_num, val_len;
int start;
unsigned char c;
rows = mdb_get_int16(mdb,8);
fprintf(stdout,"number of rows = %d\n",rows);
kkd_start = mdb_get_int16(mdb,10+rowid*2);
fprintf(stdout,"kkd start = %d %04x\n",kkd_start,kkd_start);
kkd_end = MDB_PGSIZE;
for (i=0;i<rows;i++) {
tmp = mdb_get_int16(mdb, 10+i*2);
if (tmp<MDB_PGSIZE &&
tmp>kkd_start &&
tmp<kkd_end) {
kkd_end = tmp;
}
}
fprintf(stdout,"kkd end = %d %04x\n",kkd_end,kkd_end);
pos = kkd_start + 4; /* 4 = K K D \0 */
while (pos < kkd_end) {
tmp = mdb_get_int16(mdb,pos);
row_type = mdb_get_int16(mdb,pos+4);
fprintf(stdout,"row size = %3d type = 0x%02x\n",tmp,row_type);
if (row_type==0x80) hdrpos = pos;
if (row_type==0x01) datapos = pos;
pos += tmp;
}
if (hdrpos) {
j=0;
fprintf(stdout,"\nheaders\n");
fprintf(stdout,"-------\n");
len = mdb_get_int16(mdb,hdrpos);
pos = hdrpos + 6;
while (pos < hdrpos+len) {
fprintf(stdout,"%3d ",j++);
tmp = mdb_get_int16(mdb,pos); /* length of string */
pos += 2;
for (i=0;i<tmp;i++)
fprintf(stdout,"%c",mdb->pg_buf[pos+i]);
fprintf(stdout,"\n");
pos += tmp;
}
}
if (datapos) {
fprintf(stdout,"\n data\n");
fprintf(stdout,"-------\n");
len = mdb_get_int16(mdb,datapos);
pos = datapos + 6;
while (pos < datapos+len) {
start = pos;
tmp = mdb_get_int16(mdb,pos); /* length of field */
pos += 2;
col_type = mdb_get_int16(mdb,pos); /* ??? */
pos += 2;
col_num = 0;
if (col_type) {
col_num = mdb_get_int16(mdb,pos);
pos += 2;
}
val_len = mdb_get_int16(mdb,pos);
pos += 2;
fprintf(stdout,"length = %3d %04x %2d %2d ",tmp, col_type, col_num, val_len);
for (i=0;i<val_len;i++) {
c = mdb->pg_buf[pos+i];
if (isprint(c))
fprintf(stdout," %c",c);
else
fprintf(stdout," %02x",c);
}
fprintf(stdout,"\n");
pos = start + tmp;
}
}
}
main(int argc, char **argv)
{
int rows;
int i;
unsigned char buf[2048];
MDB_HANDLE *mdb;
MDB_CATALOG_ENTRY entry;
if (argc<2) {
fprintf(stderr,"Usage: prtable <file> <table>\n");
exit(1);
}
mdb = mdb_open(argv[1]);
mdb_read_pg(mdb, MDB_CATALOG_PG);
rows = mdb_catalog_rows(mdb);
for (i=0;i<rows;i++) {
if (mdb_catalog_entry(mdb, i, &entry)) {
if (!strcmp(entry.object_name,argv[2])) {
mdb_read_pg(mdb, entry.kkd_pg);
mdb_kkd_dump(mdb, entry.kkd_rowid);
}
}
}
mdb_free_handle(mdb);
}

37
src/libmdb/mem.c Normal file
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@ -0,0 +1,37 @@
/* MDB Tools - A library for reading MS Access database files
* Copyright (C) 2000 Brian Bruns
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include "mdbtools.h"
MDB_HANDLE *mdb_alloc_handle()
{
MDB_HANDLE *mdb;
mdb = (MDB_HANDLE *) malloc(sizeof(MDB_HANDLE));
memset(mdb, '\0', sizeof(MDB_HANDLE));
return mdb;
}
void mdb_free_handle(MDB_HANDLE *mdb)
{
if (!mdb) return;
if (mdb->filename) free(mdb->filename);
free(mdb);
}

18
src/util/Makefile Normal file
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CC = gcc
INC = -I ../include
LIBS = -L ../libmdb -lmdb
PROGS = prcat
PRCATOBJS = prcat.o
all: $(PROGS)
prcat: $(PRCATOBJS)
$(CC) -g -o $@ $(PRCATOBJS) $(LIBS)
clean:
rm -f core *.o $(PROGS)
.c.o:
$(CC) -g -c $< $(INC)

45
src/util/prcat.c Normal file
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@ -0,0 +1,45 @@
/* MDB Tools - A library for reading MS Access database file
* Copyright (C) 2000 Brian Bruns
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include "mdbtools.h"
main(int argc, char **argv)
{
off_t offset=0;
int fd, i, j;
char xdigit;
short digit;
struct stat status;
int rows, cur, off;
unsigned char buf[2048];
MDB_HANDLE *mdb;
if (argc<2) {
fprintf(stderr,"Usage: prcat <file> [<objtype>]\n");
exit(1);
}
mdb = mdb_open(argv[1]);
mdb_catalog_dump(mdb,(argc > 2) ? atoi(argv[2]) : MDB_TABLE);
mdb_free_handle(mdb);
}