105 lines
3.6 KiB
Plaintext
105 lines
3.6 KiB
Plaintext
test_description="e2undo and mke2fs with offset option"
|
|
OUT="$test_name.log"
|
|
TDB_FILE="$TMPFILE.e2undo"
|
|
|
|
E2UNDO_FEATURE_COMPAT_OFFSET=1
|
|
|
|
trap "rm -f $TDB_FILE" EXIT INT QUIT
|
|
|
|
test_e2undo_mke2fs_off() {
|
|
OFF=$1
|
|
|
|
rm -f "$TDB_FILE"
|
|
echo "testing e2undo and mke2fs with the -E offset=$OFF option" >> "$OUT"
|
|
# prepare $TMPFILE
|
|
yes a | $DD of="$TMPFILE" bs="$OFF" count=1 iflag=fullblock \
|
|
> /dev/null 2>>"$OUT"
|
|
yes b | $DD bs=1k count=1024 iflag=fullblock >> "$TMPFILE" 2>>"$OUT"
|
|
yes c | $DD bs=1k count=3 iflag=fullblock >> "$TMPFILE" 2>>"$OUT"
|
|
|
|
crc_exp=`$CRCSUM "$TMPFILE"`
|
|
$MKE2FS -F -z "$TDB_FILE" -b 1024 -E offset="$OFF" "$TMPFILE" 1024 \
|
|
>> "$OUT" 2>&1
|
|
|
|
# supplement test with offset specific data
|
|
supplement_test_$OFF
|
|
|
|
# dump undo header (just to ease debugging in case of a failure)
|
|
echo "undo header:" >> "$OUT"
|
|
$E2UNDO -h "$TDB_FILE" "$TMPFILE" >> "$OUT" 2>&1
|
|
|
|
# offset is stored in the undo header
|
|
$E2UNDO "$TDB_FILE" "$TMPFILE" >> "$OUT" 2>&1
|
|
crc_act=`$CRCSUM "$TMPFILE"`
|
|
|
|
# also test the key extension code path: the key for the fs block 960
|
|
# (tdb block 30) is extended by the fs block 992 (tdb block 31)
|
|
# => we have exactly 3 key blocks instead of 4
|
|
num_keys_exp=3
|
|
num_keys_act=`$E2UNDO -h "$TDB_FILE" "$TMPFILE" | grep "^nr keys:" \
|
|
| cut -f2`
|
|
|
|
offset_exp=$OFF
|
|
offset_act=`$E2UNDO -h "$TDB_FILE" "$TMPFILE" | grep "^fs offset:" \
|
|
| cut -f2`
|
|
compat_exp=$E2UNDO_FEATURE_COMPAT_OFFSET
|
|
compat_act=`$E2UNDO -h "$TDB_FILE" "$TMPFILE" | grep "^compat:" | cut -f3`
|
|
|
|
if [ "$crc_exp" != "$crc_act" -o \
|
|
"$num_keys_exp" != "$num_keys_act" -o \
|
|
"$offset_exp" != "$offset_act" -o \
|
|
$(($compat_act & $E2UNDO_FEATURE_COMPAT_OFFSET)) -ne $compat_exp ]
|
|
then
|
|
echo "mke2fs called with offset: $OFF" >> "$test_name.failed"
|
|
echo "crc_exp: $crc_exp" >> "$test_name.failed"
|
|
echo "crc_act: $crc_act" >> "$test_name.failed"
|
|
echo "num_keys_exp: $num_keys_exp" >> "$test_name.failed"
|
|
echo "num_keys_act: $num_keys_act" >> "$test_name.failed"
|
|
echo "offset_exp: $offset_exp" >> "$test_name.failed"
|
|
echo "offset_act: $offset_act" >> "$test_name.failed"
|
|
echo "compat_exp: $compat_exp" >> "$test_name.failed"
|
|
echo "compat_act: $compat_act" >> "$test_name.failed"
|
|
echo >> "$test_name.failed"
|
|
fi
|
|
}
|
|
|
|
supplement_test_2048() {
|
|
# modify the two subsequent 1k blocks (1026 and 1027) after the fs end:
|
|
# e2undo will overwrite these modified blocks with the old
|
|
# data again (this might be considered as a bug (for now,
|
|
# this testcase just documents this behavior))
|
|
SEEK_BLOCKS=$(((2048 + 1024 * 1024) / 1024))
|
|
yes d | $DD of="$TMPFILE" bs=1k count=2 seek="$SEEK_BLOCKS" \
|
|
iflag=fullblock > /dev/null 2>>"$OUT"
|
|
}
|
|
|
|
supplement_test_96255() {
|
|
# nothing to supplement
|
|
:
|
|
}
|
|
|
|
# test even offset < tdb_data_size
|
|
# with an offset of 2048 the old code wrote an incorrect undo file,
|
|
# for example, the computations for fs block 0 were wrong:
|
|
# * backing_blk_num was set to ULLONG_MAX - 1 instead of 0
|
|
# * data was read from the beginning of the file instead of offset 2048
|
|
# * data_ptr was set to read_ptr - 2048
|
|
# for details, see the old undo_write_tdb code in undo_io.c
|
|
test_e2undo_mke2fs_off 2048
|
|
|
|
# test odd offset > tdb_data_size: 32768 * 3 - 2 * 1024 - 1
|
|
# a somewhat arbitrary value, for example, during the backup of
|
|
# fs block 0 such an offset resulted in:
|
|
# * the largest "in fs block offset" (96255 % 1024 == 1023)
|
|
# * a wrong value for data_size (actual bytes read: 31745)
|
|
# * an invalid address for data_ptr
|
|
# for details, see the old undo_write_tdb code in undo_io.c
|
|
test_e2undo_mke2fs_off 96255
|
|
|
|
if [ -e "$test_name.failed" ]; then
|
|
echo "$test_name: $test_description: failed"
|
|
else
|
|
echo "$test_name: $test_description: ok"
|
|
touch "$test_name.ok"
|
|
fi
|