/src/libfvde/libfvde/libfvde_segment_descriptor.c
Line | Count | Source (jump to first uncovered line) |
1 | | /* |
2 | | * Segment descriptor functions |
3 | | * |
4 | | * Copyright (C) 2011-2024, Omar Choudary <choudary.omar@gmail.com> |
5 | | * Joachim Metz <joachim.metz@gmail.com> |
6 | | * |
7 | | * Refer to AUTHORS for acknowledgements. |
8 | | * |
9 | | * This program is free software: you can redistribute it and/or modify |
10 | | * it under the terms of the GNU Lesser General Public License as published by |
11 | | * the Free Software Foundation, either version 3 of the License, or |
12 | | * (at your option) any later version. |
13 | | * |
14 | | * This program is distributed in the hope that it will be useful, |
15 | | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
16 | | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
17 | | * GNU General Public License for more details. |
18 | | * |
19 | | * You should have received a copy of the GNU Lesser General Public License |
20 | | * along with this program. If not, see <https://www.gnu.org/licenses/>. |
21 | | */ |
22 | | |
23 | | #include <common.h> |
24 | | #include <memory.h> |
25 | | #include <types.h> |
26 | | |
27 | | #include "libfvde_libcdata.h" |
28 | | #include "libfvde_libcerror.h" |
29 | | #include "libfvde_segment_descriptor.h" |
30 | | |
31 | | /* Creates data area descriptor |
32 | | * Make sure the value segment_descriptor is referencing, is set to NULL |
33 | | * Returns 1 if successful or -1 on error |
34 | | */ |
35 | | int libfvde_segment_descriptor_initialize( |
36 | | libfvde_segment_descriptor_t **segment_descriptor, |
37 | | libcerror_error_t **error ) |
38 | 0 | { |
39 | 0 | static char *function = "libfvde_segment_descriptor_initialize"; |
40 | |
|
41 | 0 | if( segment_descriptor == NULL ) |
42 | 0 | { |
43 | 0 | libcerror_error_set( |
44 | 0 | error, |
45 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
46 | 0 | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
47 | 0 | "%s: invalid data area descriptor.", |
48 | 0 | function ); |
49 | |
|
50 | 0 | return( -1 ); |
51 | 0 | } |
52 | 0 | if( *segment_descriptor != NULL ) |
53 | 0 | { |
54 | 0 | libcerror_error_set( |
55 | 0 | error, |
56 | 0 | LIBCERROR_ERROR_DOMAIN_RUNTIME, |
57 | 0 | LIBCERROR_RUNTIME_ERROR_VALUE_ALREADY_SET, |
58 | 0 | "%s: invalid data area descriptor value already set.", |
59 | 0 | function ); |
60 | |
|
61 | 0 | return( -1 ); |
62 | 0 | } |
63 | 0 | *segment_descriptor = memory_allocate_structure( |
64 | 0 | libfvde_segment_descriptor_t ); |
65 | |
|
66 | 0 | if( *segment_descriptor == NULL ) |
67 | 0 | { |
68 | 0 | libcerror_error_set( |
69 | 0 | error, |
70 | 0 | LIBCERROR_ERROR_DOMAIN_MEMORY, |
71 | 0 | LIBCERROR_MEMORY_ERROR_INSUFFICIENT, |
72 | 0 | "%s: unable to data area descriptor.", |
73 | 0 | function ); |
74 | |
|
75 | 0 | goto on_error; |
76 | 0 | } |
77 | 0 | if( memory_set( |
78 | 0 | *segment_descriptor, |
79 | 0 | 0, |
80 | 0 | sizeof( libfvde_segment_descriptor_t ) ) == NULL ) |
81 | 0 | { |
82 | 0 | libcerror_error_set( |
83 | 0 | error, |
84 | 0 | LIBCERROR_ERROR_DOMAIN_MEMORY, |
85 | 0 | LIBCERROR_MEMORY_ERROR_SET_FAILED, |
86 | 0 | "%s: unable to clear data area descriptor.", |
87 | 0 | function ); |
88 | |
|
89 | 0 | memory_free( |
90 | 0 | *segment_descriptor ); |
91 | |
|
92 | 0 | *segment_descriptor = NULL; |
93 | |
|
94 | 0 | return( -1 ); |
95 | 0 | } |
96 | 0 | return( 1 ); |
97 | | |
98 | 0 | on_error: |
99 | 0 | if( *segment_descriptor != NULL ) |
100 | 0 | { |
101 | 0 | memory_free( |
102 | 0 | *segment_descriptor ); |
103 | |
|
104 | 0 | *segment_descriptor = NULL; |
105 | 0 | } |
106 | 0 | return( -1 ); |
107 | 0 | } |
108 | | |
109 | | /* Frees data area descriptor |
110 | | * Returns 1 if successful or -1 on error |
111 | | */ |
112 | | int libfvde_segment_descriptor_free( |
113 | | libfvde_segment_descriptor_t **segment_descriptor, |
114 | | libcerror_error_t **error ) |
115 | 0 | { |
116 | 0 | static char *function = "libfvde_segment_descriptor_free"; |
117 | |
|
118 | 0 | if( segment_descriptor == NULL ) |
119 | 0 | { |
120 | 0 | libcerror_error_set( |
121 | 0 | error, |
122 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
123 | 0 | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
124 | 0 | "%s: invalid data area descriptor.", |
125 | 0 | function ); |
126 | |
|
127 | 0 | return( -1 ); |
128 | 0 | } |
129 | 0 | if( *segment_descriptor != NULL ) |
130 | 0 | { |
131 | 0 | memory_free( |
132 | 0 | *segment_descriptor ); |
133 | |
|
134 | 0 | *segment_descriptor = NULL; |
135 | 0 | } |
136 | 0 | return( 1 ); |
137 | 0 | } |
138 | | |
139 | | /* Compares two resource node entries |
140 | | * Returns LIBCDATA_COMPARE_LESS, LIBCDATA_COMPARE_EQUAL, LIBCDATA_COMPARE_GREATER if successful or -1 on error |
141 | | */ |
142 | | int libfvde_segment_descriptor_compare( |
143 | | libfvde_segment_descriptor_t *first_segment_descriptor, |
144 | | libfvde_segment_descriptor_t *second_segment_descriptor, |
145 | | libcerror_error_t **error ) |
146 | 0 | { |
147 | 0 | static char *function = "libfvde_segment_descriptor_compare"; |
148 | |
|
149 | 0 | if( first_segment_descriptor == NULL ) |
150 | 0 | { |
151 | 0 | libcerror_error_set( |
152 | 0 | error, |
153 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
154 | 0 | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
155 | 0 | "%s: invalid first resource node entry.", |
156 | 0 | function ); |
157 | |
|
158 | 0 | return( -1 ); |
159 | 0 | } |
160 | 0 | if( second_segment_descriptor == NULL ) |
161 | 0 | { |
162 | 0 | libcerror_error_set( |
163 | 0 | error, |
164 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
165 | 0 | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
166 | 0 | "%s: invalid second resource node entry.", |
167 | 0 | function ); |
168 | |
|
169 | 0 | return( -1 ); |
170 | 0 | } |
171 | 0 | if( first_segment_descriptor->logical_block_number < second_segment_descriptor->logical_block_number ) |
172 | 0 | { |
173 | 0 | return( LIBCDATA_COMPARE_LESS ); |
174 | 0 | } |
175 | 0 | else if( first_segment_descriptor->logical_block_number > second_segment_descriptor->logical_block_number ) |
176 | 0 | { |
177 | 0 | return( LIBCDATA_COMPARE_GREATER ); |
178 | 0 | } |
179 | 0 | return( LIBCDATA_COMPARE_EQUAL ); |
180 | 0 | } |
181 | | |