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Member "cryptsetup-2.4.3/tests/generators/generate-luks2-uint64-max-segment-size.img.sh" (24 Jul 2021, 1519 Bytes) of package /linux/misc/cryptsetup-2.4.3.tar.xz:

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    1 #!/bin/bash
    2 
    3 . lib.sh
    4 
    5 #
    6 # *** Description ***
    7 #
    8 # generate primary header with segment size set to UINT64_MAX - 511
    9 # (512 sector aligned value)
   10 #
   11 # secondary header is corrupted on purpose as well
   12 #
   13 
   14 # $1 full target dir
   15 # $2 full source luks2 image
   16 
   17 function prepare()
   18 {
   19     cp $SRC_IMG $TGT_IMG
   20     test -d $TMPDIR || mkdir $TMPDIR
   21     read_luks2_json0 $TGT_IMG $TMPDIR/json0
   22     read_luks2_bin_hdr0 $TGT_IMG $TMPDIR/hdr0
   23     read_luks2_bin_hdr1 $TGT_IMG $TMPDIR/hdr1
   24 }
   25 
   26 function generate()
   27 {
   28     # UINT64_MAX - 511 (so that it's sector aligned)
   29     json_str=$(jq -c '.segments."0".size = "18446744073709551104"' $TMPDIR/json0)
   30     test ${#json_str} -lt $((LUKS2_JSON_SIZE*512)) || exit 2
   31 
   32     write_luks2_json "$json_str" $TMPDIR/json0
   33 
   34     merge_bin_hdr_with_json $TMPDIR/hdr0 $TMPDIR/json0 $TMPDIR/area0
   35     erase_checksum $TMPDIR/area0
   36     chks0=$(calc_sha256_checksum_file $TMPDIR/area0)
   37     write_checksum $chks0 $TMPDIR/area0
   38     write_luks2_hdr0 $TMPDIR/area0 $TGT_IMG
   39     kill_bin_hdr $TMPDIR/hdr1
   40     write_luks2_hdr1 $TMPDIR/hdr1 $TGT_IMG
   41 }
   42 
   43 function check()
   44 {
   45     read_luks2_bin_hdr1 $TGT_IMG $TMPDIR/hdr_res1
   46     local str_res1=$(head -c 6 $TMPDIR/hdr_res1)
   47     test "$str_res1" = "VACUUM" || exit 2
   48 
   49     read_luks2_json0 $TGT_IMG $TMPDIR/json_res0
   50     jq -c 'if .segments."0".size != "18446744073709551104"
   51            then error("Unexpected value in result json") else empty end' $TMPDIR/json_res0 || exit 5
   52 }
   53 
   54 function cleanup()
   55 {
   56     rm -f $TMPDIR/*
   57     rm -fd $TMPDIR
   58 }
   59 
   60 test $# -eq 2 || exit 1
   61 
   62 TGT_IMG=$1/$(test_img_name $0)
   63 SRC_IMG=$2
   64 
   65 prepare
   66 generate
   67 check
   68 cleanup