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Diffstat (limited to '')
-rwxr-xr-x | tests/generators/generate-luks2-metadata-size-256k-secondary.img.sh | 97 |
1 files changed, 97 insertions, 0 deletions
diff --git a/tests/generators/generate-luks2-metadata-size-256k-secondary.img.sh b/tests/generators/generate-luks2-metadata-size-256k-secondary.img.sh new file mode 100755 index 0000000..0ed66e1 --- /dev/null +++ b/tests/generators/generate-luks2-metadata-size-256k-secondary.img.sh @@ -0,0 +1,97 @@ +#!/bin/bash + +. lib.sh + +# +# *** Description *** +# +# generate secondary header with one of allowed json area +# size values. Test whether auto-recovery code is able +# to validate secondary header with non-default json area +# size. +# +# primary header is corrupted on purpose. +# + +# $1 full target dir +# $2 full source luks2 image + +function prepare() +{ + cp $SRC_IMG $TGT_IMG + test -d $TMPDIR || mkdir $TMPDIR + read_luks2_json0 $TGT_IMG $TMPDIR/json0 + read_luks2_bin_hdr0 $TGT_IMG $TMPDIR/hdr0 + read_luks2_bin_hdr1 $TGT_IMG $TMPDIR/hdr1 +} + +function generate() +{ + # 256 KiB metadata + TEST_MDA_SIZE=$LUKS2_HDR_SIZE_256K + + TEST_MDA_SIZE_BYTES=$((TEST_MDA_SIZE*512)) + TEST_JSN_SIZE=$((TEST_MDA_SIZE-LUKS2_BIN_HDR_SIZE)) + KEYSLOTS_OFFSET=$((TEST_MDA_SIZE*1024)) + JSON_DIFF=$(((TEST_MDA_SIZE-LUKS2_HDR_SIZE)*1024)) + JSON_SIZE=$((TEST_JSN_SIZE*512)) + DATA_OFFSET=16777216 + + json_str=$(jq -c --arg jdiff $JSON_DIFF --arg jsize $JSON_SIZE --arg off $DATA_OFFSET \ + '.keyslots[].area.offset |= ( . | tonumber + ($jdiff | tonumber) | tostring) | + .config.json_size = $jsize | + .segments."0".offset = $off' $TMPDIR/json0) + test -n "$json_str" || exit 2 + test ${#json_str} -lt $((LUKS2_JSON_SIZE*512)) || exit 2 + + write_luks2_json "$json_str" $TMPDIR/json0 $TEST_JSN_SIZE + + write_bin_hdr_size $TMPDIR/hdr0 $TEST_MDA_SIZE_BYTES + write_bin_hdr_size $TMPDIR/hdr1 $TEST_MDA_SIZE_BYTES + + write_bin_hdr_offset $TMPDIR/hdr1 $TEST_MDA_SIZE_BYTES + + merge_bin_hdr_with_json $TMPDIR/hdr0 $TMPDIR/json0 $TMPDIR/area0 $TEST_JSN_SIZE + merge_bin_hdr_with_json $TMPDIR/hdr1 $TMPDIR/json0 $TMPDIR/area1 $TEST_JSN_SIZE + + erase_checksum $TMPDIR/area0 + chks0=$(calc_sha256_checksum_file $TMPDIR/area0) + write_checksum $chks0 $TMPDIR/area0 + + erase_checksum $TMPDIR/area1 + chks0=$(calc_sha256_checksum_file $TMPDIR/area1) + write_checksum $chks0 $TMPDIR/area1 + + kill_bin_hdr $TMPDIR/area0 + + write_luks2_hdr0 $TMPDIR/area0 $TGT_IMG $TEST_MDA_SIZE + write_luks2_hdr1 $TMPDIR/area1 $TGT_IMG $TEST_MDA_SIZE +} + +function check() +{ + read_luks2_bin_hdr0 $TGT_IMG $TMPDIR/hdr_res0 $TEST_MDA_SIZE + local str_res0=$(head -c 6 $TMPDIR/hdr_res0) + test "$str_res0" = "VACUUM" || exit 2 + read_luks2_json1 $TGT_IMG $TMPDIR/json_res1 $TEST_JSN_SIZE + jq -c --arg koff $KEYSLOTS_OFFSET --arg jsize $JSON_SIZE \ + 'if ([.keyslots[].area.offset] | map(tonumber) | min | tostring != $koff) or + (.config.json_size != $jsize) + then error("Unexpected value in result json") else empty end' $TMPDIR/json_res1 || exit 5 +} + +function cleanup() +{ + rm -f $TMPDIR/* + rm -fd $TMPDIR +} + +test $# -eq 2 || exit 1 + +TGT_IMG=$1/$(test_img_name $0) +SRC_IMG=$2 + +prepare +generate +check +cleanup |