5 FILE_RAND=./wipe_random_localfile
6 MB_BYTES=$((1024*1024))
8 DEVSIZE=$((DEVSIZEMB*$MB_BYTES))
10 HASH_EMPTY=2daeb1f36095b44b318410b3f4e8b5d989dcc7bb023d1426c492dab0a3053e74
13 rm -f $FILE $FILE_RAND 2> /dev/null
15 rmmod scsi_debug >/dev/null 2>&1
20 if [ -n "$1" ] ; then echo "FAIL $1" ; else echo "FAIL" ; fi
21 echo "FAILED backtrace:"
22 while caller $frame; do ((frame++)); done
29 echo "TEST SKIPPED: $1"
36 rmmod scsi_debug >/dev/null 2>&1
37 if [ -d /sys/module/scsi_debug ] ; then
38 skip "Cannot use scsi_debug module (in use or compiled-in)."
40 modprobe scsi_debug dev_size_mb=$DEVSIZEMB num_tgts=1 delay=0 >/dev/null 2>&1
41 if [ $? -ne 0 ] ; then
42 skip "This kernel seems to not support proper scsi_debug module."
44 grep -q scsi_debug /sys/block/*/device/model || sleep 2
45 DEV=$(grep -l -e scsi_debug /sys/block/*/device/model | cut -f4 -d /)
47 [ -b $DEV ] || fail "Cannot find $DEV."
50 function check_hash() # $1 dev, $2 hash
52 local HASH=$(sha256sum $1 | cut -d' ' -f 1)
56 function init_hash_dd() # $1 dev, $dev orig
58 dd if=/dev/urandom of=$2 bs=1M count=$DEVSIZEMB conv=notrunc 2> /dev/null
59 dd if=$2 of=$1 bs=1M conv=notrunc 2> /dev/null
60 HASH_0=$(sha256sum $1 | cut -d' ' -f 1)
62 dd if=/dev/zero of=$1 bs=1M seek=1 count=1 conv=notrunc 2> /dev/null
63 HASH_1=$(sha256sum $1 | cut -d' ' -f 1)
65 dd if=/dev/zero of=$1 bs=1M seek=4 count=3 conv=notrunc 2> /dev/null
66 HASH_2=$(sha256sum $1 | cut -d' ' -f 1)
67 dd if=$2 of=$1 bs=1M conv=notrunc 2> /dev/null
72 dd if=/dev/zero of=$FILE bs=1M count=$DEVSIZEMB 2> /dev/null || fail
73 dd if=/dev/zero of=$FILE_RAND bs=1M count=$DEVSIZEMB 2> /dev/null || fail
74 check_hash $FILE $HASH_EMPTY || fail
75 check_hash $FILE_RAND $HASH_EMPTY || fail
76 dd if=$FILE of=/dev/null bs=4096 count=1 iflag=direct >/dev/null 2>&1 || FILE_NODIO=1
79 function test_wipe_full() # $1 dev, $2 block size, [$3 flags]
81 # wipe random and back to zero
82 $WIPE_UNIT $1 random 0 $DEVSIZE $2 $3 || fail
83 check_hash $1 $HASH_EMPTY && fail "Failed random wipe"
84 $WIPE_UNIT $1 zero 0 $DEVSIZE $2 $3 || fail
85 check_hash $1 $HASH_EMPTY || fail "Failed zero wipe"
88 # wipe MB blocks, with zero, random and special and back to original
89 function test_wipe_blocks() # $1 dev $2 block sizem [$3 flags]
91 init_hash_dd $1 $FILE_RAND
92 check_hash $1 $HASH_0 || fail
94 $WIPE_UNIT $1 zero $((1*$MB_BYTES)) $((1*$MB_BYTES)) $2 $3 || fail
95 check_hash $1 $HASH_1 || fail
96 $WIPE_UNIT $1 random $((1*$MB_BYTES)) $((1*$MB_BYTES)) $2 $3 || fail
97 check_hash $1 $HASH_1 && fail
98 $WIPE_UNIT $1 special $((1*$MB_BYTES)) $((1*$MB_BYTES)) $2 $3 || fail
99 check_hash $1 $HASH_1 && fail
100 $WIPE_UNIT $1 zero $((1*$MB_BYTES)) $((1*$MB_BYTES)) $2 $3 || fail
101 check_hash $1 $HASH_1 || fail
103 $WIPE_UNIT $1 zero $((4*$MB_BYTES)) $((3*$MB_BYTES)) $2 $3 || fail
104 check_hash $1 $HASH_2 || fail
105 $WIPE_UNIT $1 random $((4*$MB_BYTES)) $((3*$MB_BYTES)) $2 $3 || fail
106 check_hash $1 $HASH_2 && fail
107 $WIPE_UNIT $1 special $((4*$MB_BYTES)) $((3*$MB_BYTES)) $2 $3 || fail
108 check_hash $1 $HASH_2 && fail
109 $WIPE_UNIT $1 zero $((4*$MB_BYTES)) $((3*$MB_BYTES)) $2 $3 || fail
110 check_hash $1 $HASH_2 || fail
113 test -x $WIPE_UNIT || skip "Run \"make `basename $WIPE_UNIT`\" first"
118 echo -n "[1] Wipe full file "
119 for bs in 0 $MB_BYTES $((4*$MB_BYTES)); do
120 if [ -n "$FILE_NODIO" ]; then
121 echo -n [$bs/DIO N/A]
124 test_wipe_full $FILE $bs
127 test_wipe_full $FILE $bs no-dio
131 echo -n "[2] Wipe blocks in file "
132 for bs in 0 $MB_BYTES $((4*$MB_BYTES)); do
133 if [ -n "$FILE_NODIO" ]; then
134 echo -n [$bs/DIO N/A]
137 test_wipe_blocks $FILE $bs
140 test_wipe_blocks $FILE $bs no-dio
144 [ $(id -u) -eq 0 ] || {
145 echo "WARNING: You must be root to run remaining tests."
152 echo -n "[3] Wipe full block device "
153 for bs in 0 $MB_BYTES $((4*$MB_BYTES)); do
155 test_wipe_full $DEV $bs
157 test_wipe_full $DEV $bs no-dio
161 echo -n "[4] Wipe blocks in block device "
162 for bs in 0 $MB_BYTES $((4*$MB_BYTES)); do
164 test_wipe_blocks $DEV $bs
166 test_wipe_blocks $DEV $bs no-dio