File: libolecf_allocation_table.c

package info (click to toggle)
libolecf 20181231-1
  • links: PTS, VCS
  • area: main
  • in suites: buster
  • size: 12,476 kB
  • sloc: ansic: 182,255; sh: 6,096; makefile: 1,356; python: 325; sed: 16
file content (301 lines) | stat: -rw-r--r-- 7,565 bytes parent folder | download | duplicates (3)
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
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
/*
 * Allocation table functions
 *
 * Copyright (C) 2008-2018, Joachim Metz <joachim.metz@gmail.com>
 *
 * Refer to AUTHORS for acknowledgements.
 *
 * This software 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 software 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 software.  If not, see <http://www.gnu.org/licenses/>.
 */

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

#include "libolecf_allocation_table.h"
#include "libolecf_libcerror.h"

/* Creates an allocation table
 * Make sure the value allocation_table is referencing, is set to NULL
 * Returns 1 if successful or -1 on error
 */
int libolecf_allocation_table_initialize(
     libolecf_allocation_table_t **allocation_table,
     int number_of_sector_identifiers,
     libcerror_error_t **error )
{
	static char *function          = "libolecf_allocation_table_initialize";
	size_t sector_identifiers_size = 0;

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

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

		return( -1 );
	}
	if( number_of_sector_identifiers < 0 )
	{
		libcerror_error_set(
		 error,
		 LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
		 LIBCERROR_ARGUMENT_ERROR_VALUE_LESS_THAN_ZERO,
		 "%s: invalid number of sector identifiers value less than zero.",
		 function );

		return( -1 );
	}
	if( (size_t) number_of_sector_identifiers > (size_t) ( SSIZE_MAX / sizeof( uint32_t ) ) )
	{
		libcerror_error_set(
		 error,
		 LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
		 LIBCERROR_ARGUMENT_ERROR_VALUE_EXCEEDS_MAXIMUM,
		 "%s: invalid number of sector identifers value exceeds maximum.",
		 function );

		goto on_error;
	}
	*allocation_table = memory_allocate_structure(
	                     libolecf_allocation_table_t );

	if( *allocation_table == NULL )
	{
		libcerror_error_set(
		 error,
		 LIBCERROR_ERROR_DOMAIN_MEMORY,
		 LIBCERROR_MEMORY_ERROR_INSUFFICIENT,
		 "%s: unable to create allocation table.",
		 function );

		goto on_error;
	}
	if( memory_set(
	     *allocation_table,
	     0,
	     sizeof( libolecf_allocation_table_t ) ) == NULL )
	{
		libcerror_error_set(
		 error,
		 LIBCERROR_ERROR_DOMAIN_MEMORY,
		 LIBCERROR_MEMORY_ERROR_SET_FAILED,
		 "%s: unable to clear allocation table.",
		 function );

		memory_free(
		 *allocation_table );

		*allocation_table = NULL;

		return( -1 );
	}
	if( number_of_sector_identifiers > 0 )
	{
		sector_identifiers_size = number_of_sector_identifiers * sizeof( uint32_t );

		if( sector_identifiers_size > (size_t) SSIZE_MAX )
		{
			libcerror_error_set(
			 error,
			 LIBCERROR_ERROR_DOMAIN_RUNTIME,
			 LIBCERROR_RUNTIME_ERROR_VALUE_EXCEEDS_MAXIMUM,
			 "%s: invalid sector identifiers size value exceeds maximum.",
			 function );

			goto on_error;
		}
		( *allocation_table )->sector_identifier = (uint32_t *) memory_allocate(
									 sector_identifiers_size );

		if( ( *allocation_table )->sector_identifier == NULL )
		{
			libcerror_error_set(
			 error,
			 LIBCERROR_ERROR_DOMAIN_MEMORY,
			 LIBCERROR_MEMORY_ERROR_INSUFFICIENT,
			 "%s: unable to create sector identifiers.",
			 function );

			goto on_error;
		}
		if( memory_set(
		     ( *allocation_table )->sector_identifier,
		     0,
		     sector_identifiers_size ) == NULL )
		{
			libcerror_error_set(
			 error,
			 LIBCERROR_ERROR_DOMAIN_MEMORY,
			 LIBCERROR_MEMORY_ERROR_SET_FAILED,
			 "%s: unable to clear sector identifiers.",
			 function );

			goto on_error;
		}
		( *allocation_table )->number_of_sector_identifiers = number_of_sector_identifiers;
	}
	return( 1 );

on_error:
	if( *allocation_table != NULL )
	{
		if( ( *allocation_table )->sector_identifier != NULL )
		{
			memory_free(
			 ( *allocation_table )->sector_identifier );
		}
		memory_free(
		 *allocation_table );

		*allocation_table = NULL;
	}
	return( -1 );
}

/* Frees an allocation table
 * Returns 1 if successful or -1 on error
 */
int libolecf_allocation_table_free(
     libolecf_allocation_table_t **allocation_table,
     libcerror_error_t **error )
{
	static char *function = "libolecf_allocation_table_free";

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

		return( -1 );
	}
	if( *allocation_table != NULL )
	{
		if( ( *allocation_table )->sector_identifier != NULL )
		{
			memory_free(
			 ( *allocation_table )->sector_identifier );
		}
		memory_free(
		 *allocation_table );

		*allocation_table = NULL;
	}
	return( 1 );
}

/* Resizes an allocation_table
 * Returns 1 if successful or -1 on error
 */
int libolecf_allocation_table_resize(
     libolecf_allocation_table_t *allocation_table,
     int number_of_sector_identifiers,
     libcerror_error_t **error )
{
	void *reallocation             = NULL;
	static char *function          = "libolecf_allocation_table_resize";
	size_t sector_identifiers_size = 0;

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

		return( -1 );
	}
	if( number_of_sector_identifiers < 0 )
	{
		libcerror_error_set(
		 error,
		 LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
		 LIBCERROR_ARGUMENT_ERROR_VALUE_LESS_THAN_ZERO,
		 "%s: invalid number of sector identifiers value less than zero.",
		 function );

		return( -1 );
	}
	if( allocation_table->number_of_sector_identifiers < number_of_sector_identifiers )
	{
		sector_identifiers_size = sizeof( uint32_t ) * number_of_sector_identifiers;

		if( sector_identifiers_size > (size_t) SSIZE_MAX )
		{
			libcerror_error_set(
			 error,
			 LIBCERROR_ERROR_DOMAIN_RUNTIME,
			 LIBCERROR_RUNTIME_ERROR_VALUE_EXCEEDS_MAXIMUM,
			 "%s: invalid sector identifiers size value exceeds maximum.",
			 function );

			return( -1 );
		}
		reallocation = memory_reallocate(
		                allocation_table->sector_identifier,
		                sector_identifiers_size );

		if( reallocation == NULL )
		{
			libcerror_error_set(
			 error,
			 LIBCERROR_ERROR_DOMAIN_MEMORY,
			 LIBCERROR_MEMORY_ERROR_INSUFFICIENT,
			 "%s: unable to resize sector identifiers.",
			 function );

			return( -1 );
		}
		allocation_table->sector_identifier = (uint32_t *) reallocation;

		allocation_table->number_of_sector_identifiers = number_of_sector_identifiers;

		if( memory_set(
		     allocation_table->sector_identifier,
		     0,
		     sizeof( uint32_t ) * ( number_of_sector_identifiers - allocation_table->number_of_sector_identifiers ) ) == NULL )
		{
			libcerror_error_set(
			 error,
			 LIBCERROR_ERROR_DOMAIN_MEMORY,
			 LIBCERROR_MEMORY_ERROR_SET_FAILED,
			 "%s: unable to clear sector identifiers.",
			 function );

			return( -1 );
		}
	}
	return( 1 );
}