diff options
Diffstat (limited to 'tests/unit-wipe-test')
| -rwxr-xr-x | tests/unit-wipe-test | 170 |
1 files changed, 170 insertions, 0 deletions
diff --git a/tests/unit-wipe-test b/tests/unit-wipe-test new file mode 100755 index 0000000..4d0a078 --- /dev/null +++ b/tests/unit-wipe-test @@ -0,0 +1,170 @@ +#!/bin/bash + +WIPE_UNIT=./unit-wipe +FILE=./wipe_localfile +FILE_RAND=./wipe_random_localfile +MB_BYTES=$((1024*1024)) +DEVSIZEMB=8 +DEVSIZE=$((DEVSIZEMB*$MB_BYTES)) + +HASH_EMPTY=2daeb1f36095b44b318410b3f4e8b5d989dcc7bb023d1426c492dab0a3053e74 + +function cleanup() { + rm -f $FILE $FILE_RAND 2> /dev/null + sleep 1 + rmmod scsi_debug >/dev/null 2>&1 +} + +function fail() +{ + if [ -n "$1" ] ; then echo "FAIL $1" ; else echo "FAIL" ; fi + echo "FAILED backtrace:" + while caller $frame; do ((frame++)); done + cleanup + exit 100 +} + +function skip() +{ + echo "TEST SKIPPED: $1" + cleanup + exit 77 +} + +function add_device() +{ + rmmod scsi_debug >/dev/null 2>&1 + if [ -d /sys/module/scsi_debug ] ; then + skip "Cannot use scsi_debug module (in use or compiled-in)." + fi + modprobe scsi_debug dev_size_mb=$DEVSIZEMB num_tgts=1 delay=0 >/dev/null 2>&1 + if [ $? -ne 0 ] ; then + skip "This kernel seems to not support proper scsi_debug module." + fi + grep -q scsi_debug /sys/block/*/device/model || sleep 2 + DEV=$(grep -l -e scsi_debug /sys/block/*/device/model | cut -f4 -d /) + DEV="/dev/$DEV" + [ -b $DEV ] || fail "Cannot find $DEV." +} + +function check_hash() # $1 dev, $2 hash +{ + local HASH=$(sha256sum $1 | cut -d' ' -f 1) + [ $HASH == "$2" ] +} + +function init_hash_dd() # $1 dev, $dev orig +{ + dd if=/dev/urandom of=$2 bs=1M count=$DEVSIZEMB conv=notrunc 2> /dev/null + dd if=$2 of=$1 bs=1M conv=notrunc 2> /dev/null + HASH_0=$(sha256sum $1 | cut -d' ' -f 1) + # second MB wiped + dd if=/dev/zero of=$1 bs=1M seek=1 count=1 conv=notrunc 2> /dev/null + HASH_1=$(sha256sum $1 | cut -d' ' -f 1) + # 4,5,6 MB wiped + dd if=/dev/zero of=$1 bs=1M seek=4 count=3 conv=notrunc 2> /dev/null + HASH_2=$(sha256sum $1 | cut -d' ' -f 1) + dd if=$2 of=$1 bs=1M conv=notrunc 2> /dev/null +} + +function add_file() +{ + dd if=/dev/zero of=$FILE bs=1M count=$DEVSIZEMB 2> /dev/null || fail + dd if=/dev/zero of=$FILE_RAND bs=1M count=$DEVSIZEMB 2> /dev/null || fail + check_hash $FILE $HASH_EMPTY || fail + check_hash $FILE_RAND $HASH_EMPTY || fail + dd if=$FILE of=/dev/null bs=4096 count=1 iflag=direct >/dev/null 2>&1 || FILE_NODIO=1 +} + +function test_wipe_full() # $1 dev, $2 block size, [$3 flags] +{ + # wipe random and back to zero + $WIPE_UNIT $1 random 0 $DEVSIZE $2 $3 || fail + check_hash $1 $HASH_EMPTY && fail "Failed random wipe" + $WIPE_UNIT $1 zero 0 $DEVSIZE $2 $3 || fail + check_hash $1 $HASH_EMPTY || fail "Failed zero wipe" +} + +# wipe MB blocks, with zero, random and special and back to original +function test_wipe_blocks() # $1 dev $2 block sizem [$3 flags] +{ + init_hash_dd $1 $FILE_RAND + check_hash $1 $HASH_0 || fail + + $WIPE_UNIT $1 zero $((1*$MB_BYTES)) $((1*$MB_BYTES)) $2 $3 || fail + check_hash $1 $HASH_1 || fail + $WIPE_UNIT $1 random $((1*$MB_BYTES)) $((1*$MB_BYTES)) $2 $3 || fail + check_hash $1 $HASH_1 && fail + $WIPE_UNIT $1 special $((1*$MB_BYTES)) $((1*$MB_BYTES)) $2 $3 || fail + check_hash $1 $HASH_1 && fail + $WIPE_UNIT $1 zero $((1*$MB_BYTES)) $((1*$MB_BYTES)) $2 $3 || fail + check_hash $1 $HASH_1 || fail + + $WIPE_UNIT $1 zero $((4*$MB_BYTES)) $((3*$MB_BYTES)) $2 $3 || fail + check_hash $1 $HASH_2 || fail + $WIPE_UNIT $1 random $((4*$MB_BYTES)) $((3*$MB_BYTES)) $2 $3 || fail + check_hash $1 $HASH_2 && fail + $WIPE_UNIT $1 special $((4*$MB_BYTES)) $((3*$MB_BYTES)) $2 $3 || fail + check_hash $1 $HASH_2 && fail + $WIPE_UNIT $1 zero $((4*$MB_BYTES)) $((3*$MB_BYTES)) $2 $3 || fail + check_hash $1 $HASH_2 || fail +} + +test -x $WIPE_UNIT || skip "Run \"make `basename $WIPE_UNIT`\" first" + +cleanup +add_file + +echo -n "[1] Wipe full file " +for bs in 0 $MB_BYTES $((4*$MB_BYTES)); do + if [ -n "$FILE_NODIO" ]; then + echo -n [$bs/DIO N/A] + else + echo -n [$bs/DIO] + test_wipe_full $FILE $bs + fi + echo -n [$bs] + test_wipe_full $FILE $bs no-dio +done +echo "[OK]" + +echo -n "[2] Wipe blocks in file " +for bs in 0 $MB_BYTES $((4*$MB_BYTES)); do + if [ -n "$FILE_NODIO" ]; then + echo -n [$bs/DIO N/A] + else + echo -n [$bs/DIO] + test_wipe_blocks $FILE $bs + fi + echo -n [$bs] + test_wipe_blocks $FILE $bs no-dio +done +echo "[OK]" + +[ $(id -u) -eq 0 ] || { + echo "WARNING: You must be root to run remaining tests." + cleanup + exit 0 +} + +add_device + +echo -n "[3] Wipe full block device " +for bs in 0 $MB_BYTES $((4*$MB_BYTES)); do + echo -n [$bs/DIO] + test_wipe_full $DEV $bs + echo -n [$bs] + test_wipe_full $DEV $bs no-dio +done +echo "[OK]" + +echo -n "[4] Wipe blocks in block device " +for bs in 0 $MB_BYTES $((4*$MB_BYTES)); do + echo -n [$bs/DIO] + test_wipe_blocks $DEV $bs + echo -n [$bs] + test_wipe_blocks $DEV $bs no-dio +done +echo "[OK]" + +cleanup |