/src/libvshadow/libvshadow/libvshadow_block.c

Source (jump to first uncovered line)
/*
 * Block functions
 *
 * Copyright (C) 2011-2024, Joachim Metz <joachim.metz@gmail.com>
 *
 * Refer to AUTHORS for acknowledgements.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */

#include <common.h>
#include <memory.h>
#include <types.h>

#include "libvshadow_block.h"
#include "libvshadow_block_descriptor.h"
#include "libvshadow_definitions.h"
#include "libvshadow_libcerror.h"
#include "libvshadow_types.h"

/* Creates a block
 * Make sure the value block is referencing, is set to NULL
 * Returns 1 if successful or -1 on error
 */
int libvshadow_block_initialize(
     libvshadow_block_t **block,
     libvshadow_block_descriptor_t *block_descriptor,
     libcerror_error_t **error )
{
  libvshadow_internal_block_t *internal_block = NULL;
  static char *function                       = "libvshadow_block_initialize";

  if( block == NULL )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
     "%s: invalid block.",
     function );

    return( -1 );
  }
  if( *block != NULL )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_RUNTIME,
     LIBCERROR_RUNTIME_ERROR_VALUE_ALREADY_SET,
     "%s: invalid block value already set.",
     function );

    return( -1 );
  }
  if( block_descriptor == NULL )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
     "%s: invalid block descriptor.",
     function );

    return( -1 );
  }
  internal_block = memory_allocate_structure(
                    libvshadow_internal_block_t );

  if( internal_block == NULL )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_MEMORY,
     LIBCERROR_MEMORY_ERROR_INSUFFICIENT,
     "%s: unable to create block.",
     function );

    goto on_error;
  }
  if( memory_set(
       internal_block,
       0,
       sizeof( libvshadow_internal_block_t ) ) == NULL )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_MEMORY,
     LIBCERROR_MEMORY_ERROR_SET_FAILED,
     "%s: unable to clear block.",
     function );

    goto on_error;
  }
  internal_block->block_descriptor = block_descriptor;

  *block = (libvshadow_block_t *) internal_block;

  return( 1 );

on_error:
  if( internal_block != NULL )
  {
    memory_free(
     internal_block );
  }
  return( -1 );
}

/* Frees a block
 * Returns 1 if successful or -1 on error
 */
int libvshadow_block_free(
     libvshadow_block_t **block,
     libcerror_error_t **error )
{
  libvshadow_internal_block_t *internal_block = NULL;
  static char *function                       = "libvshadow_block_free";
  int result                                  = 1;

  if( block == NULL )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
     "%s: invalid block.",
     function );

    return( -1 );
  }
  if( *block != NULL )
  {
    internal_block = (libvshadow_internal_block_t *) *block;
    *block         = NULL;

    memory_free(
     internal_block );
  }
  return( result );
}

/* Retrieves the original offset
 * Returns 1 if successful or -1 on error
 */
int libvshadow_block_get_original_offset(
     libvshadow_block_t *block,
     off64_t *original_offset,
     libcerror_error_t **error )
{
  libvshadow_internal_block_t *internal_block = NULL;
  static char *function                       = "libvshadow_block_get_original_offset";

  if( block == NULL )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
     "%s: invalid block.",
     function );

    return( -1 );
  }
  internal_block = (libvshadow_internal_block_t *) block;

  if( internal_block->block_descriptor == NULL )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_RUNTIME,
     LIBCERROR_RUNTIME_ERROR_VALUE_MISSING,
     "%s: invalid block - missing block descriptor.",
     function );

    return( -1 );
  }
  if( original_offset == NULL )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
     "%s: invalid original offset.",
     function );

    return( -1 );
  }
  *original_offset = internal_block->block_descriptor->original_offset;

  return( 1 );
}

/* Retrieves the relative offset
 * Returns 1 if successful or -1 on error
 */
int libvshadow_block_get_relative_offset(
     libvshadow_block_t *block,
     off64_t *relative_offset,
     libcerror_error_t **error )
{
  libvshadow_internal_block_t *internal_block = NULL;
  static char *function                       = "libvshadow_block_get_relative_offset";

  if( block == NULL )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
     "%s: invalid block.",
     function );

    return( -1 );
  }
  internal_block = (libvshadow_internal_block_t *) block;

  if( internal_block->block_descriptor == NULL )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_RUNTIME,
     LIBCERROR_RUNTIME_ERROR_VALUE_MISSING,
     "%s: invalid block - missing block descriptor.",
     function );

    return( -1 );
  }
  if( relative_offset == NULL )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
     "%s: invalid relative offset.",
     function );

    return( -1 );
  }
  *relative_offset = internal_block->block_descriptor->relative_offset;

  return( 1 );
}

/* Retrieves the offset
 * Returns 1 if successful or -1 on error
 */
int libvshadow_block_get_offset(
     libvshadow_block_t *block,
     off64_t *offset,
     libcerror_error_t **error )
{
  libvshadow_internal_block_t *internal_block = NULL;
  static char *function                       = "libvshadow_block_get_offset";

  if( block == NULL )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
     "%s: invalid block.",
     function );

    return( -1 );
  }
  internal_block = (libvshadow_internal_block_t *) block;

  if( internal_block->block_descriptor == NULL )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_RUNTIME,
     LIBCERROR_RUNTIME_ERROR_VALUE_MISSING,
     "%s: invalid block - missing block descriptor.",
     function );

    return( -1 );
  }
  if( offset == NULL )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
     "%s: invalid offset.",
     function );

    return( -1 );
  }
  *offset = internal_block->block_descriptor->offset;

  return( 1 );
}

/* Retrieves the values
 * Returns 1 if successful or -1 on error
 */
int libvshadow_block_get_values(
     libvshadow_block_t *block,
     off64_t *original_offset,
     off64_t *relative_offset,
     off64_t *offset,
     uint32_t *flags,
     uint32_t *bitmap,
     libcerror_error_t **error )
{
  libvshadow_internal_block_t *internal_block = NULL;
  static char *function                       = "libvshadow_block_get_values";

  if( block == NULL )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
     "%s: invalid block.",
     function );

    return( -1 );
  }
  internal_block = (libvshadow_internal_block_t *) block;

  if( internal_block->block_descriptor == NULL )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_RUNTIME,
     LIBCERROR_RUNTIME_ERROR_VALUE_MISSING,
     "%s: invalid block - missing block descriptor.",
     function );

    return( -1 );
  }
  if( original_offset == NULL )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
     "%s: invalid original offset.",
     function );

    return( -1 );
  }
  if( relative_offset == NULL )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
     "%s: invalid relative offset.",
     function );

    return( -1 );
  }
  if( offset == NULL )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
     "%s: invalid offset.",
     function );

    return( -1 );
  }
  if( flags == NULL )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
     "%s: invalid flags.",
     function );

    return( -1 );
  }
  if( bitmap == NULL )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
     "%s: invalid bitmap.",
     function );

    return( -1 );
  }
  *original_offset = internal_block->block_descriptor->original_offset;
  *relative_offset = internal_block->block_descriptor->relative_offset;
  *offset          = internal_block->block_descriptor->offset;
  *flags           = internal_block->block_descriptor->flags;
  *bitmap          = internal_block->block_descriptor->bitmap;

  return( 1 );
}


Coverage Report

Created: 2025-06-13 07:22

Line	Count	Source (jump to first uncovered line)
1		/*
2		* Block functions
3		*
4		* Copyright (C) 2011-2024, Joachim Metz <joachim.metz@gmail.com>
5		*
6		* Refer to AUTHORS for acknowledgements.
7		*
8		* This program is free software: you can redistribute it and/or modify
9		* it under the terms of the GNU Lesser General Public License as published by
10		* the Free Software Foundation, either version 3 of the License, or
11		* (at your option) any later version.
12		*
13		* This program is distributed in the hope that it will be useful,
14		* but WITHOUT ANY WARRANTY; without even the implied warranty of
15		* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16		* GNU General Public License for more details.
17		*
18		* You should have received a copy of the GNU Lesser General Public License
19		* along with this program. If not, see <https://www.gnu.org/licenses/>.
20		*/
21
22		#include <common.h>
23		#include <memory.h>
24		#include <types.h>
25
26		#include "libvshadow_block.h"
27		#include "libvshadow_block_descriptor.h"
28		#include "libvshadow_definitions.h"
29		#include "libvshadow_libcerror.h"
30		#include "libvshadow_types.h"
31
32		/* Creates a block
33		* Make sure the value block is referencing, is set to NULL
34		* Returns 1 if successful or -1 on error
35		*/
36		int libvshadow_block_initialize(
37		libvshadow_block_t **block,
38		libvshadow_block_descriptor_t *block_descriptor,
39		libcerror_error_t **error )
40	0	{
41	0	libvshadow_internal_block_t *internal_block = NULL;
42	0	static char *function = "libvshadow_block_initialize";
43
44	0	if( block == NULL )
45	0	{
46	0	libcerror_error_set(
47	0	error,
48	0	LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
49	0	LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
50	0	"%s: invalid block.",
51	0	function );
52
53	0	return( -1 );
54	0	}
55	0	if( *block != NULL )
56	0	{
57	0	libcerror_error_set(
58	0	error,
59	0	LIBCERROR_ERROR_DOMAIN_RUNTIME,
60	0	LIBCERROR_RUNTIME_ERROR_VALUE_ALREADY_SET,
61	0	"%s: invalid block value already set.",
62	0	function );
63
64	0	return( -1 );
65	0	}
66	0	if( block_descriptor == NULL )
67	0	{
68	0	libcerror_error_set(
69	0	error,
70	0	LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
71	0	LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
72	0	"%s: invalid block descriptor.",
73	0	function );
74
75	0	return( -1 );
76	0	}
77	0	internal_block = memory_allocate_structure(
78	0	libvshadow_internal_block_t );
79
80	0	if( internal_block == NULL )
81	0	{
82	0	libcerror_error_set(
83	0	error,
84	0	LIBCERROR_ERROR_DOMAIN_MEMORY,
85	0	LIBCERROR_MEMORY_ERROR_INSUFFICIENT,
86	0	"%s: unable to create block.",
87	0	function );
88
89	0	goto on_error;
90	0	}
91	0	if( memory_set(
92	0	internal_block,
93	0	0,
94	0	sizeof( libvshadow_internal_block_t ) ) == NULL )
95	0	{
96	0	libcerror_error_set(
97	0	error,
98	0	LIBCERROR_ERROR_DOMAIN_MEMORY,
99	0	LIBCERROR_MEMORY_ERROR_SET_FAILED,
100	0	"%s: unable to clear block.",
101	0	function );
102
103	0	goto on_error;
104	0	}
105	0	internal_block->block_descriptor = block_descriptor;
106
107	0	block = (libvshadow_block_t ) internal_block;
108
109	0	return( 1 );
110
111	0	on_error:
112	0	if( internal_block != NULL )
113	0	{
114	0	memory_free(
115	0	internal_block );
116	0	}
117	0	return( -1 );
118	0	}
119
120		/* Frees a block
121		* Returns 1 if successful or -1 on error
122		*/
123		int libvshadow_block_free(
124		libvshadow_block_t **block,
125		libcerror_error_t **error )
126	0	{
127	0	libvshadow_internal_block_t *internal_block = NULL;
128	0	static char *function = "libvshadow_block_free";
129	0	int result = 1;
130
131	0	if( block == NULL )
132	0	{
133	0	libcerror_error_set(
134	0	error,
135	0	LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
136	0	LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
137	0	"%s: invalid block.",
138	0	function );
139
140	0	return( -1 );
141	0	}
142	0	if( *block != NULL )
143	0	{
144	0	internal_block = (libvshadow_internal_block_t ) block;
145	0	*block = NULL;
146
147	0	memory_free(
148	0	internal_block );
149	0	}
150	0	return( result );
151	0	}
152
153		/* Retrieves the original offset
154		* Returns 1 if successful or -1 on error
155		*/
156		int libvshadow_block_get_original_offset(
157		libvshadow_block_t *block,
158		off64_t *original_offset,
159		libcerror_error_t **error )
160	0	{
161	0	libvshadow_internal_block_t *internal_block = NULL;
162	0	static char *function = "libvshadow_block_get_original_offset";
163
164	0	if( block == NULL )
165	0	{
166	0	libcerror_error_set(
167	0	error,
168	0	LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
169	0	LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
170	0	"%s: invalid block.",
171	0	function );
172
173	0	return( -1 );
174	0	}
175	0	internal_block = (libvshadow_internal_block_t *) block;
176
177	0	if( internal_block->block_descriptor == NULL )
178	0	{
179	0	libcerror_error_set(
180	0	error,
181	0	LIBCERROR_ERROR_DOMAIN_RUNTIME,
182	0	LIBCERROR_RUNTIME_ERROR_VALUE_MISSING,
183	0	"%s: invalid block - missing block descriptor.",
184	0	function );
185
186	0	return( -1 );
187	0	}
188	0	if( original_offset == NULL )
189	0	{
190	0	libcerror_error_set(
191	0	error,
192	0	LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
193	0	LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
194	0	"%s: invalid original offset.",
195	0	function );
196
197	0	return( -1 );
198	0	}
199	0	*original_offset = internal_block->block_descriptor->original_offset;
200
201	0	return( 1 );
202	0	}
203
204		/* Retrieves the relative offset
205		* Returns 1 if successful or -1 on error
206		*/
207		int libvshadow_block_get_relative_offset(
208		libvshadow_block_t *block,
209		off64_t *relative_offset,
210		libcerror_error_t **error )
211	0	{
212	0	libvshadow_internal_block_t *internal_block = NULL;
213	0	static char *function = "libvshadow_block_get_relative_offset";
214
215	0	if( block == NULL )
216	0	{
217	0	libcerror_error_set(
218	0	error,
219	0	LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
220	0	LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
221	0	"%s: invalid block.",
222	0	function );
223
224	0	return( -1 );
225	0	}
226	0	internal_block = (libvshadow_internal_block_t *) block;
227
228	0	if( internal_block->block_descriptor == NULL )
229	0	{
230	0	libcerror_error_set(
231	0	error,
232	0	LIBCERROR_ERROR_DOMAIN_RUNTIME,
233	0	LIBCERROR_RUNTIME_ERROR_VALUE_MISSING,
234	0	"%s: invalid block - missing block descriptor.",
235	0	function );
236
237	0	return( -1 );
238	0	}
239	0	if( relative_offset == NULL )
240	0	{
241	0	libcerror_error_set(
242	0	error,
243	0	LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
244	0	LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
245	0	"%s: invalid relative offset.",
246	0	function );
247
248	0	return( -1 );
249	0	}
250	0	*relative_offset = internal_block->block_descriptor->relative_offset;
251
252	0	return( 1 );
253	0	}
254
255		/* Retrieves the offset
256		* Returns 1 if successful or -1 on error
257		*/
258		int libvshadow_block_get_offset(
259		libvshadow_block_t *block,
260		off64_t *offset,
261		libcerror_error_t **error )
262	0	{
263	0	libvshadow_internal_block_t *internal_block = NULL;
264	0	static char *function = "libvshadow_block_get_offset";
265
266	0	if( block == NULL )
267	0	{
268	0	libcerror_error_set(
269	0	error,
270	0	LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
271	0	LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
272	0	"%s: invalid block.",
273	0	function );
274
275	0	return( -1 );
276	0	}
277	0	internal_block = (libvshadow_internal_block_t *) block;
278
279	0	if( internal_block->block_descriptor == NULL )
280	0	{
281	0	libcerror_error_set(
282	0	error,
283	0	LIBCERROR_ERROR_DOMAIN_RUNTIME,
284	0	LIBCERROR_RUNTIME_ERROR_VALUE_MISSING,
285	0	"%s: invalid block - missing block descriptor.",
286	0	function );
287
288	0	return( -1 );
289	0	}
290	0	if( offset == NULL )
291	0	{
292	0	libcerror_error_set(
293	0	error,
294	0	LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
295	0	LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
296	0	"%s: invalid offset.",
297	0	function );
298
299	0	return( -1 );
300	0	}
301	0	*offset = internal_block->block_descriptor->offset;
302
303	0	return( 1 );
304	0	}
305
306		/* Retrieves the values
307		* Returns 1 if successful or -1 on error
308		*/
309		int libvshadow_block_get_values(
310		libvshadow_block_t *block,
311		off64_t *original_offset,
312		off64_t *relative_offset,
313		off64_t *offset,
314		uint32_t *flags,
315		uint32_t *bitmap,
316		libcerror_error_t **error )
317	0	{
318	0	libvshadow_internal_block_t *internal_block = NULL;
319	0	static char *function = "libvshadow_block_get_values";
320
321	0	if( block == NULL )
322	0	{
323	0	libcerror_error_set(
324	0	error,
325	0	LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
326	0	LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
327	0	"%s: invalid block.",
328	0	function );
329
330	0	return( -1 );
331	0	}
332	0	internal_block = (libvshadow_internal_block_t *) block;
333
334	0	if( internal_block->block_descriptor == NULL )
335	0	{
336	0	libcerror_error_set(
337	0	error,
338	0	LIBCERROR_ERROR_DOMAIN_RUNTIME,
339	0	LIBCERROR_RUNTIME_ERROR_VALUE_MISSING,
340	0	"%s: invalid block - missing block descriptor.",
341	0	function );
342
343	0	return( -1 );
344	0	}
345	0	if( original_offset == NULL )
346	0	{
347	0	libcerror_error_set(
348	0	error,
349	0	LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
350	0	LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
351	0	"%s: invalid original offset.",
352	0	function );
353
354	0	return( -1 );
355	0	}
356	0	if( relative_offset == NULL )
357	0	{
358	0	libcerror_error_set(
359	0	error,
360	0	LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
361	0	LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
362	0	"%s: invalid relative offset.",
363	0	function );
364
365	0	return( -1 );
366	0	}
367	0	if( offset == NULL )
368	0	{
369	0	libcerror_error_set(
370	0	error,
371	0	LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
372	0	LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
373	0	"%s: invalid offset.",
374	0	function );
375
376	0	return( -1 );
377	0	}
378	0	if( flags == NULL )
379	0	{
380	0	libcerror_error_set(
381	0	error,
382	0	LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
383	0	LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
384	0	"%s: invalid flags.",
385	0	function );
386
387	0	return( -1 );
388	0	}
389	0	if( bitmap == NULL )
390	0	{
391	0	libcerror_error_set(
392	0	error,
393	0	LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
394	0	LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
395	0	"%s: invalid bitmap.",
396	0	function );
397
398	0	return( -1 );
399	0	}
400	0	*original_offset = internal_block->block_descriptor->original_offset;
401	0	*relative_offset = internal_block->block_descriptor->relative_offset;
402	0	*offset = internal_block->block_descriptor->offset;
403	0	*flags = internal_block->block_descriptor->flags;
404	0	*bitmap = internal_block->block_descriptor->bitmap;
405
406	0	return( 1 );
407	0	}
408