tests/cksum/cksum.sh

   1 #!/bin/sh
   2 # Validate cksum operation
   3
   4 # Copyright (C) 2020-2024 Free Software Foundation, Inc.
   5
   6 # This program is free software: you can redistribute it and/or modify
   7 # it under the terms of the GNU General Public License as published by
   8 # the Free Software Foundation, either version 3 of the License, or
   9 # (at your option) any later version.
  10
  11 # This program is distributed in the hope that it will be useful,
  12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 # GNU General Public License for more details.
  15
  16 # You should have received a copy of the GNU General Public License
  17 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
  18
  19 . "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
  20 print_ver_ cksum printf
  21
  22
  23 returns_ 1 cksum missing || fail=1
  24
  25 # Pass in expected crc and crc32b for file "in"
  26 # Sets fail=1 upon failure
  27 crc_check() {
  28   for crct in crc crc32b; do
  29     cksum -a $crct in > out || fail=1
  30     case "$crct" in crc) crce="$1";; crc32b) crce="$2";; esac
  31     size=$(stat -c %s in) || framework_failure_
  32     printf '%s\n' "$crce $size in" > exp || framework_failure_
  33     compare exp out || fail=1
  34   done
  35 }
  36
  37
  38 # Check complete range of bytes
  39 {
  40   for offset in $(seq -1 6); do
  41     env printf $(env printf '\\%03o' $(seq 0 $offset));
  42     env printf $(env printf '\\%03o' $(seq 0 255));
  43   done
  44 } > in || framework_failure_
  45 crc_check 4097727897 559400337
  46
  47 # Make sure crc is correct for files larger than 128 bytes (4 fold pclmul)
  48 {
  49   env printf $(env printf '\\%03o' $(seq 0 130));
  50 } > in || framework_failure_
  51 crc_check 3800919234 3739179551
  52
  53 # Make sure crc is correct for files larger than 32 bytes
  54 # but <128 bytes (1 fold pclmul)
  55 {
  56   env printf $(env printf '\\%03o' $(seq 0 64));
  57 } > in || framework_failure_
  58 crc_check 796287823 1086353368
  59
  60 # Make sure crc is still handled correctly when next 65k buffer is read
  61 # (>32 bytes more than 65k)
  62 {
  63   seq 1 12780
  64 } > in || framework_failure_
  65 crc_check 3720986905 388883562
  66
  67 # Make sure crc is still handled correctly when next 65k buffer is read
  68 # (>=128 bytes more than 65k)
  69 {
  70   seq 1 12795
  71 } > in || framework_failure_
  72 crc_check 4278270357 2796628507
  73
  74
  75 Exit $fail