tests/u_offset/script

   1 test_description="e2undo with the offset option (-o offset)"
   2 OUT="$test_name.log"
   3 TMPFILE2="${TMPFILE}_2"
   4 TDB_FILE="$TMPFILE.e2undo"
   5
   6 E2UNDO_FEATURE_COMPAT_OFFSET=1
   7
   8 trap "rm -f $TMPFILE2 $TDB_FILE" EXIT INT QUIT
   9
  10 read_header_entry() {
  11         # $2 is just used as a dummy - it is never used by e2undo
  12         # when dumping the header
  13         $E2UNDO -h "$1" "$2" | grep "^$3:"
  14 }
  15
  16 read_header_offset() {
  17         read_header_entry "$TDB_FILE" "$TMPFILE" "fs offset" | cut -f2
  18 }
  19
  20 read_header_compat() {
  21         read_header_entry "$TDB_FILE" "$TMPFILE" "compat" | cut -f3
  22 }
  23
  24 e2undo_offset_assert() {
  25         if [ "$crc_exp" != "$crc_act" -o \
  26                  "$offset_exp" != "$offset_act" -o \
  27                  $(($compat_act & $E2UNDO_FEATURE_COMPAT_OFFSET)) -ne $compat_exp ]
  28                 then
  29                 echo "$1" >> "$test_name.failed"
  30                 echo "crc_exp: $crc_exp" >> "$test_name.failed"
  31                 echo "crc_act: $crc_act" >> "$test_name.failed"
  32                 echo "offset_exp: $offset_exp" >> "$test_name.failed"
  33                 echo "offset_act: $offset_act" >> "$test_name.failed"
  34                 echo "compat_exp: $compat_exp" >> "$test_name.failed"
  35                 echo "compat_act: $compat_act" >> "$test_name.failed"
  36         fi
  37 }
  38
  39 init_fs() {
  40         echo "#" >> "$OUT"
  41         echo "# init fs for $1" >> "$OUT"
  42         echo "#" >> "$OUT"
  43         rm -f "$TDB_FILE"
  44         dd if=/dev/zero of="$TMPFILE" bs=1k count=1024 > /dev/null 2>&1
  45         $MKE2FS -F -z "$TDB_FILE" -b 1024 -E offset=524288 "$TMPFILE" 512 \
  46                 >> "$OUT" 2>&1
  47 }
  48
  49 #
  50 # test absence of the "-o N" option
  51 #
  52 test_e2undo_offset_no_option() {
  53         init_fs "test_e2undo_offset_no_option"
  54
  55         $E2UNDO "$TDB_FILE" "$TMPFILE" >> "$OUT" 2>&1
  56
  57         crc_exp=`dd if=/dev/zero bs=1k count=1024 2>/dev/null | $CRCSUM`
  58         crc_act=`$CRCSUM "$TMPFILE"`
  59         offset_exp=524288
  60         offset_act=`read_header_offset`
  61         compat_exp=$E2UNDO_FEATURE_COMPAT_OFFSET
  62         compat_act=`read_header_compat`
  63         e2undo_offset_assert "test_e2undo_offset_no_option"
  64 }
  65
  66 #
  67 # test removal of the offset feature in the undo header
  68 #
  69 test_e2undo_offset_no_option_remove_offset_header() {
  70         init_fs "test_e2undo_offset_no_option_remove_offset_header"
  71         dd if="$TMPFILE" of="$TMPFILE2" bs=1k count=512 skip=512 \
  72                 > /dev/null 2>&1
  73         # offset feature will be removed from the undo header
  74         $TUNE2FS -z "$TDB_FILE" -C 42 "$TMPFILE2" >> "$OUT" 2>&1
  75
  76         $E2UNDO "$TDB_FILE" "$TMPFILE2" >> "$OUT" 2>&1
  77
  78         crc_exp=`dd if=/dev/zero bs=1k count=512 2>/dev/null | $CRCSUM`
  79         crc_act=`$CRCSUM "$TMPFILE2"`
  80         offset_exp=
  81         offset_act=`read_header_offset`
  82         compat_exp=0
  83         compat_act=`read_header_compat`
  84         e2undo_offset_assert "test_e2undo_offset_no_option_remove_offset_header"
  85 }
  86
  87 #
  88 # test "-o 4096"
  89 #
  90 test_e2undo_offset_4096() {
  91         init_fs "test_e2undo_offset_4096"
  92         dd if=/dev/zero of="$TMPFILE2" bs=1k count=4 > /dev/null 2>&1
  93         dd if="$TMPFILE" of="$TMPFILE2" bs=1k count=512 skip=512 seek=4 \
  94                 > /dev/null 2>&1
  95
  96         $E2UNDO -o 4096 "$TDB_FILE" "$TMPFILE2" >> "$OUT" 2>&1
  97
  98         crc_exp=`dd if=/dev/zero bs=1k count=516 2>/dev/null | $CRCSUM`
  99         crc_act=`$CRCSUM "$TMPFILE2"`
 100         # the same as in test_e2undo_offset_no_option
 101         offset_exp=524288
 102         offset_act=`read_header_offset`
 103         compat_exp=$E2UNDO_FEATURE_COMPAT_OFFSET
 104         compat_act=`read_header_compat`
 105         e2undo_offset_assert "test_e2undo_offset_4096"
 106 }
 107
 108 #
 109 # test "-o 0"
 110 #
 111 test_e2undo_offset_0() {
 112         init_fs "test_e2undo_offset_0"
 113         dd if="$TMPFILE" of="$TMPFILE2" bs=1k count=512 skip=512 \
 114                 > /dev/null 2>&1
 115
 116         $E2UNDO -o 0 "$TDB_FILE" "$TMPFILE2" >> "$OUT" 2>&1
 117
 118         crc_exp=`dd if=/dev/zero bs=1k count=512 2>/dev/null | $CRCSUM`
 119         crc_act=`$CRCSUM "$TMPFILE2"`
 120         # the same as in test_e2undo_offset_no_option
 121         offset_exp=524288
 122         offset_act=`read_header_offset`
 123         compat_exp=$E2UNDO_FEATURE_COMPAT_OFFSET
 124         compat_act=`read_header_compat`
 125         e2undo_offset_assert "test_e2undo_offset_0"
 126 }
 127
 128 test_e2undo_offset_no_option
 129 test_e2undo_offset_no_option_remove_offset_header
 130 test_e2undo_offset_4096
 131 test_e2undo_offset_0
 132
 133 if [ -e "$test_name.failed" ]; then
 134         echo "$test_name: $test_description: failed"
 135 else
 136         echo "$test_name: $test_description: ok"
 137         touch "$test_name.ok"
 138 fi