tests/verity-compat-test

   1 #!/bin/bash
   2
   3 VERITYSETUP=../src/veritysetup
   4
   5 DEV_NAME=verity3273
   6 DEV_OUT="$DEV_NAME.out"
   7 IMG=verity-data
   8 IMG_HASH=verity-hash
   9
  10 function remove_mapping()
  11 {
  12         [ -b /dev/mapper/$DEV_NAME ] && dmsetup remove $DEV_NAME
  13         [ ! -z "$LOOPDEV1" ] && losetup -d $LOOPDEV1 >/dev/null 2>&1
  14         rm -f $IMG $IMG_HASH $DEV_OUT >/dev/null 2>&1
  15         LOOPDEV1=""
  16         LOOPDEV2=""
  17 }
  18
  19 function fail()
  20 {
  21         [ -n "$1" ] && echo "$1"
  22         echo "FAILED"
  23         [ -f $DEV_OUT ] && cat $DEV_OUT
  24         remove_mapping
  25         exit 2
  26 }
  27
  28 function skip()
  29 {
  30         [ -n "$1" ] && echo "$1"
  31         exit 0
  32 }
  33
  34 function prepare() # $1 dev1_siz [$2 dev2_size]
  35 {
  36         remove_mapping
  37
  38         dd if=/dev/zero of=$IMG      bs=1k count=$1 >/dev/null 2>&1
  39         LOOPDEV1=$(losetup -f 2>/dev/null)
  40         [ -z "$LOOPDEV1" ] && fail "No free loop device"
  41         losetup $LOOPDEV1 $IMG
  42
  43         [ -z "$2" ] && return
  44         LOOPDEV2=$IMG_HASH
  45 }
  46
  47 function wipe()
  48 {
  49         dd if=/dev/zero of=$LOOPDEV1 bs=256k >/dev/null 2>&1
  50         rm -f $IMG_HASH $DEV_OUT >/dev/null 2>&1
  51 }
  52
  53 function check_exists()
  54 {
  55         [ -b /dev/mapper/$DEV_NAME ] || fail
  56 }
  57
  58 function compare_out() # $1 what, $2 expected
  59 {
  60         OPT=$(grep -v "^#" $DEV_OUT | grep -i "$1" | sed -e s/.*\:\ // )
  61         [ -z "$OPT" ] && fail
  62         [ $OPT != $2 ] && fail "$1 differs ($2)"
  63 }
  64
  65 function check_root_hash() # $1 size, $2 hash, $3 salt, $4 version, $5 hash, [$6 offset]
  66 {
  67         if [ -z "$LOOPDEV2" ] ; then
  68                 BLOCKS=$(($6 / $1))
  69                 DEV_PARAMS="$LOOPDEV1 $LOOPDEV1 \
  70                            --hash-offset $6 \
  71                            --data-blocks=$BLOCKS --debug"
  72         else
  73                 DEV_PARAMS="$LOOPDEV1 $LOOPDEV2"
  74         fi
  75
  76         for sb in yes no; do
  77         FORMAT_PARAMS="--format=$4 --data-block-size=$1 --hash-block-size=$1 --hash=$5 --salt=$3"
  78         if [ $sb == yes ] ; then
  79                 VERIFY_PARAMS=""
  80         else
  81                 FORMAT_PAFAMS="$FORMAT_PARAMS --no-superlock"
  82                 VERIFY_PARAMS=$FORMAT_PARAMS
  83         fi
  84
  85         for fail in data hash; do
  86         wipe
  87         echo -n "V$4(sb=$sb) $5 block size $1: "
  88         $VERITYSETUP format $DEV_PARAMS $FORMAT_PARAMS >$DEV_OUT || fail
  89
  90         echo -n "[root hash]"
  91         compare_out "root hash" $2
  92         compare_out "salt" "$3"
  93
  94         $VERITYSETUP verify $DEV_PARAMS $VERIFY_PARAMS $2 >>$DEV_OUT 2>&1 || fail
  95         echo -n "[verify]"
  96
  97         $VERITYSETUP create $DEV_NAME $DEV_PARAMS $VERIFY_PARAMS $2  >>$DEV_OUT 2>&1 || fail
  98         check_exists
  99         echo -n "[activate]"
 100
 101         dd if=/dev/mapper/$DEV_NAME of=/dev/null bs=$1 2>/dev/null
 102         dmsetup status $DEV_NAME | grep "verity V" >/dev/null || fail
 103         echo -n "[in-kernel verify]"
 104
 105         $VERITYSETUP remove $DEV_NAME || fail
 106
 107         case $fail in
 108         data)
 109                 dd if=/dev/urandom of=$LOOPDEV1 bs=1 seek=3456 count=8 conv=notrunc 2>/dev/null
 110                 TXT="data_dev"
 111                 ;;
 112         hash)
 113                 if [ -z "$LOOPDEV2" ] ; then
 114                         dd if=/dev/urandom of=$LOOPDEV1 bs=1 seek=$((8193 + $4)) count=8 conv=notrunc 2>/dev/null
 115                 else
 116                         dd if=/dev/urandom of=$LOOPDEV2 bs=1 seek=8193 count=8 conv=notrunc 2>/dev/null
 117                 fi
 118                 TXT="hash_dev"
 119                 ;;
 120         esac
 121
 122         $VERITYSETUP verify $DEV_PARAMS $VERIFY_PARAMS $2 >>$DEV_OUT 2>&1 && \
 123                 fail "userspace check for $TXT corruption"
 124         $VERITYSETUP create $DEV_NAME $DEV_PARAMS $VERIFY_PARAMS $2 >>$DEV_OUT 2>&1 || \
 125                 fail "activation"
 126         dd if=/dev/mapper/$DEV_NAME of=/dev/null bs=$1 2>/dev/null
 127         dmsetup status $DEV_NAME | grep "verity V" >/dev/null && \
 128                 fail "in-kernel check for $TXT corruption"
 129         $VERITYSETUP remove $DEV_NAME || fail "deactivation"
 130         echo "[$TXT corruption]"
 131         done
 132         done
 133 }
 134
 135 function valgrind_setup()
 136 {
 137         which valgrind >/dev/null 2>&1 || fail "Cannot find valgrind."
 138         [ ! -f $CRYPTSETUP_VALGRIND ] && fail "Unable to get location of cryptsetup executable."
 139         #export LD_LIBRARY_PATH="$CRYPTSETUP_LIB_VALGRIND:$LD_LIBRARY_PATH"
 140 }
 141
 142 function valgrind_run()
 143 {
 144         INFOSTRING="$(basename ${BASH_SOURCE[1]})-line-${BASH_LINENO[0]}" ./valg.sh ${VERITYSETUP} "$@"
 145 }
 146
 147 [ $(id -u) != 0 ] && skip "WARNING: You must be root to run this test, test skipped."
 148 [ ! -x "$VERITYSETUP" ] && skip "Cannot find $VERITYSETUP, test skipped."
 149
 150 [ -n "$VALG" ] && valgrind_setup && VERITYSETUP=valgrind_run
 151 modprobe dm-verity >/dev/null 2>&1
 152 dmsetup targets | grep verity >/dev/null 2>&1 || skip "Cannot find dm-verity target, test skipped."
 153
 154 # VERITYSETUP tests
 155
 156 SALT=e48da609055204e89ae53b655ca2216dd983cf3cb829f34f63a297d106d53e2d
 157
 158 echo "Verity tests [separate devices]"
 159 prepare 8192 1024
 160 check_root_hash  512 9de18652fe74edfb9b805aaed72ae2aa48f94333f1ba5c452ac33b1c39325174 $SALT 1 sha256
 161 check_root_hash 1024 54d92778750495d1f80832b486ebd007617d746271511bbf0e295e143da2b3df $SALT 1 sha256
 162 check_root_hash 4096 e522df0f97da4febb882ac40f30b37dc0b444bf6df418929463fa25280f09d5c $SALT 1 sha256
 163 # version 0
 164 check_root_hash 4096 cbbf4ebd004ef65e29b935bb635a39cf754d677f3fa10b0126da725bbdf10f7d $SALT 0 sha256
 165 # no salt
 166 check_root_hash 4096 ef29c902d87350f1da4bfa536e16cebc162a909bf89abe448b81ec500d4fb9bf - 1 sha256
 167 # sha1
 168 check_root_hash 1024 d0e9163ca8844aaa2e88fe5265a8c5d9ee494a99 $SALT 1 sha1
 169 check_root_hash 1024 73509e8e868be6b8ac939817a98a3d35121413b2 dadada 1 sha1
 170
 171 echo "Verity tests [one device offset]"
 172 prepare $((8192 + 1024))
 173 check_root_hash  512 9de18652fe74edfb9b805aaed72ae2aa48f94333f1ba5c452ac33b1c39325174 $SALT 1 sha256 8388608
 174 check_root_hash 1024 54d92778750495d1f80832b486ebd007617d746271511bbf0e295e143da2b3df $SALT 1 sha256 8388608
 175 check_root_hash 4096 e522df0f97da4febb882ac40f30b37dc0b444bf6df418929463fa25280f09d5c $SALT 1 sha256 8388608
 176 # version 0
 177 check_root_hash 4096 cbbf4ebd004ef65e29b935bb635a39cf754d677f3fa10b0126da725bbdf10f7d $SALT 0 sha256 8388608
 178 # no salt
 179 check_root_hash 4096 ef29c902d87350f1da4bfa536e16cebc162a909bf89abe448b81ec500d4fb9bf - 1 sha256 8388608
 180 # sha1
 181 check_root_hash 1024 d0e9163ca8844aaa2e88fe5265a8c5d9ee494a99 $SALT 1 sha1 8388608
 182 check_root_hash 1024 73509e8e868be6b8ac939817a98a3d35121413b2 dadada 1 sha1 8388608
 183
 184 remove_mapping
 185 exit 0