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/*-------------------------------------------------------------------------
* Copyright (C) 1997 National Center for Supercomputing Applications.
* All rights reserved.
*
*-------------------------------------------------------------------------
*
* Created: debug.c
* Jul 18 1997
* Robb Matzke <robb@maya.nuance.com>
*
* Purpose: Debugs an existing HDF5 file at a low level.
*
* Modifications:
*
*-------------------------------------------------------------------------
*/
#include "hdf5.h"
#include "H5private.h"
#include "H5Bprivate.h"
#include "H5Fprivate.h"
#include "H5Gprivate.h"
#include "H5Hprivate.h"
#define INDENT 3
#define VCOL 50
/*-------------------------------------------------------------------------
* Function: main
*
* Usage: debug FILENAME [OFFSET]
*
* Return: Success: exit (0)
*
* Failure: exit (non-zero)
*
* Programmer: Robb Matzke
* robb@maya.nuance.com
* Jul 18 1997
*
* Modifications:
*
*-------------------------------------------------------------------------
*/
int
main (int argc, char *argv[])
{
hatom_t fid;
hdf5_file_t *f;
haddr_t addr = 0;
uint8 sig[16];
intn i;
/*
* Parse command arguments.
*/
if (argc>2) {
printf ("New address: %s\n", argv[2]);
addr = strtol (argv[2], NULL, 0);
}
/*
* Open the file and get the file descriptor.
*/
if ((fid = H5Fopen (argv[1], 0, 0))<0) {
fprintf (stderr, "cannot open file\n");
exit (1);
}
if (NULL==(f=H5Aatom_object (fid))) {
fprintf (stderr, "cannot obtain hdf5_file_t pointer\n");
exit (2);
}
/*
* Read the signature at the specified file position.
*/
printf ("Reading signature at byte %lu\n", (unsigned long)addr);
if (H5F_block_read (f, addr, sizeof(sig), sig)<0) {
fprintf (stderr, "cannot read signature\n");
exit (3);
}
if (!memcmp (sig, HDF5_FILE_SIGNATURE, HDF5_FILE_SIGNATURE_LEN)) {
/*
* Debug the boot block.
*/
H5F_debug (f, 0, stdout, 0, VCOL);
} else if (!memcmp (sig, H5H_MAGIC, H5H_SIZEOF_MAGIC)) {
/*
* Debug a heap.
*/
H5H_debug (f, addr, stdout, 0, VCOL);
} else if (!memcmp (sig, H5G_NODE_MAGIC, H5G_NODE_SIZEOF_MAGIC)) {
/*
* Debug a symbol table node.
*/
H5G_node_debug (f, addr, stdout, 0, VCOL);
} else if (!memcmp (sig, H5B_MAGIC, H5B_SIZEOF_MAGIC)) {
/*
* Debug a B-tree. B-trees are debugged through the B-tree
* subclass. The subclass identifier is the byte immediately
* after the B-tree signature.
*/
H5B_subid_t subtype = sig[H5B_SIZEOF_MAGIC];
switch (subtype) {
case H5B_SUBTYPE_SNODE:
H5G_node_debug (f, addr, stdout, 0, VCOL);
break;
default:
fprintf (stderr, "Unknown B-tree subtype %u\n", (unsigned)(subtype));
exit (4);
}
} else {
/*
* Got some other unrecognized signature.
*/
printf ("%-*s ", VCOL, "Signature:");
for (i=0; i<8; i++) {
if (sig[i]>' ' && sig[i]<='~' && '\\'!=sig[i]) {
putchar (sig[i]);
} else if ('\\'==sig[i]) {
putchar ('\\');
putchar ('\\');
} else {
printf ("\\%03o", sig[i]);
}
}
putchar ('\n');
fprintf (stderr, "unknown signature\n");
exit (4);
}
H5Fclose (fid);
exit (0);
}
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