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
|
#!/bin/bash
#
# Expert Witness Compression Format (EWF) library read/write testing script
#
# Copyright (c) 2006-2012, 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/>.
#
EXIT_SUCCESS=0;
EXIT_FAILURE=1;
EXIT_IGNORE=77;
INPUT="input";
TMP="tmp";
AWK="awk";
CUT="cut";
LS="ls";
TR="tr";
test_read_write_delta()
{
MEDIA_SIZE=$1;
CHUNK_SIZE=$2;
COMPRESSION_LEVEL=$3;
WRITE_OFFSET=$4;
WRITE_SIZE=$5;
shift 2;
mkdir ${TMP};
if test "${OSTYPE}" = "msys";
then
OUTPUT_FILE="${TMP}\\write";
else
OUTPUT_FILE="${TMP}/write";
fi
./${EWF_TEST_WRITE} -b ${CHUNK_SIZE} -B ${MEDIA_SIZE} -c `echo ${COMPRESSION_LEVEL} | ${CUT} -c 1` "${OUTPUT_FILE}";
RESULT=$?;
if [ ${RESULT} -eq ${EXIT_SUCCESS} ];
then
FILENAMES=`${LS} ${OUTPUT_FILE}.* | ${TR} '\n' ' '`;
if test "${OSTYPE}" = "msys";
then
OUTPUT_FILE="${TMP}\\read_write";
else
OUTPUT_FILE="${TMP}/read_write";
fi
./${EWF_TEST_READ_WRITE_DELTA} -B ${WRITE_SIZE} -o ${WRITE_OFFSET} -t "${OUTPUT_FILE}" ${FILENAMES};
RESULT=$?;
fi
if [ ${RESULT} -eq ${EXIT_SUCCESS} ];
then
if [ ${WRITE_OFFSET} -lt ${MEDIA_SIZE} ];
then
if [ -e ${OUTPUT_FILE}.d01 ];
then
FILESIZE=`${LS} -l ${OUTPUT_FILE}.d01 | ${AWK} '{ print $5 }'`;
CHUNK_SIZE=`expr ${CHUNK_SIZE} \* 512`;
if [ `expr ${WRITE_OFFSET} + ${WRITE_SIZE}` -gt ${MEDIA_SIZE} ];
then
WRITE_SIZE=`expr ${MEDIA_SIZE} - ${WRITE_OFFSET}`;
fi
NUMBER_OF_CHUNKS=`expr ${WRITE_SIZE} / ${CHUNK_SIZE}`;
REMAINING_SIZE=`expr ${WRITE_SIZE} % ${CHUNK_SIZE}`;
if [ ${REMAINING_SIZE} -gt 0 ];
then
# Check if the remaining size is part of the last chunk
if [ `expr ${WRITE_OFFSET} + \( \( ${NUMBER_OF_CHUNKS} + 1 \) \* ${CHUNK_SIZE} \)` -le ${MEDIA_SIZE} ];
then
NUMBER_OF_CHUNKS=`expr ${NUMBER_OF_CHUNKS} + 1`;
REMAINING_SIZE=0;
fi
fi
CHUNK_OFFSET=`expr \( ${WRITE_OFFSET} / ${CHUNK_SIZE} \) \* ${CHUNK_SIZE}`;
# Check if the written data passes a chunk boundary
if [ ${WRITE_OFFSET} -gt ${CHUNK_OFFSET} ];
then
if [ `expr ${WRITE_OFFSET} + ${WRITE_SIZE}` -gt `expr ${CHUNK_OFFSET} + ${CHUNK_SIZE}` ];
then
NUMBER_OF_CHUNKS=`expr ${NUMBER_OF_CHUNKS} + 1`;
fi
fi
if [ ${NUMBER_OF_CHUNKS} -gt 0 ];
then
# Add the section start, the delta chunk header and chunk checksum
CALCULATED=`expr 76 + 18 + ${CHUNK_SIZE} + 4`;
# Multiply by the amount of chunks altered
CALCULATED=`expr ${CALCULATED} \* ${NUMBER_OF_CHUNKS}`;
fi
if [ ${REMAINING_SIZE} -gt 0 ];
then
# Add the section start, the delta chunk header and chunk checksum of the last chunk
CALCULATED=`expr ${CALCULATED} + 76 + 18 + ${REMAINING_SIZE} + 4`;
fi
# Add the segment file header and the done or next section
CALCULATED=`expr 13 + ${CALCULATED} + 76`;
if [ ${FILESIZE} -eq ${CALCULATED} ];
then
RESULT=${EXIT_SUCCESS};
else
RESULT=${EXIT_FAILURE};
fi
else
RESULT=${EXIT_FAILURE};
fi
else
if [ -e ${OUTPUT_FILE}.d01 ];
then
RESULT=${EXIT_FAILURE};
else
RESULT=${EXIT_SUCCESS};
fi
fi
fi
rm -rf ${TMP};
echo -n "Testing read/write with offset: ${WRITE_OFFSET} and size: ${WRITE_SIZE} and compression level: ${COMPRESSION_LEVEL} ";
if test ${RESULT} -ne ${EXIT_SUCCESS};
then
echo " (FAIL)";
else
echo " (PASS)";
fi
return ${RESULT};
}
EWF_TEST_WRITE="ewf_test_write";
if ! test -x ${EWF_TEST_WRITE};
then
EWF_TEST_WRITE="ewf_test_write.exe";
fi
if ! test -x ${EWF_TEST_WRITE};
then
echo "Missing executable: ${EWF_TEST_WRITE}";
exit ${EXIT_FAILURE};
fi
EWF_TEST_READ_WRITE_DELTA="ewf_test_read_write_delta";
if ! test -x ${EWF_TEST_READ_WRITE_DELTA};
then
EWF_TEST_READ_WRITE_DELTA="ewf_test_read_write_delta.exe";
fi
if ! test -x ${EWF_TEST_READ_WRITE_DELTA};
then
echo "Missing executable: ${EWF_TEST_READ_WRITE_DELTA}";
exit ${EXIT_FAILURE};
fi
for COMPRESSION_LEVEL in none empty-block fast best;
do
if ! test_read_write_delta 100000 64 ${COMPRESSION_LEVEL} 0 100000
then
exit ${EXIT_FAILURE};
fi
if ! test_read_write_delta 100000 64 ${COMPRESSION_LEVEL} 512 512
then
exit ${EXIT_FAILURE};
fi
if ! test_read_write_delta 100000 64 ${COMPRESSION_LEVEL} 32512 512
then
exit ${EXIT_FAILURE};
fi
if ! test_read_write_delta 100000 64 ${COMPRESSION_LEVEL} 32512 40000
then
exit ${EXIT_FAILURE};
fi
done
exit ${EXIT_SUCCESS};
|
