tests/du/hard-link.sh

   1 #!/bin/sh
   2 # Ensure that hard-linked files are counted (and listed) only once.
   3 # Likewise for excluded directories.
   4 # Ensure that hard links _are_ listed twice when using --count-links.
   5
   6 # Copyright (C) 2003-2024 Free Software Foundation, Inc.
   7
   8 # This program is free software: you can redistribute it and/or modify
   9 # it under the terms of the GNU General Public License as published by
  10 # the Free Software Foundation, either version 3 of the License, or
  11 # (at your option) any later version.
  12
  13 # This program is distributed in the hope that it will be useful,
  14 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 # GNU General Public License for more details.
  17
  18 # You should have received a copy of the GNU General Public License
  19 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
  20
  21 . "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
  22 print_ver_ du
  23
  24 mkdir -p dir/sub
  25 ( cd dir &&
  26   { echo non-empty > f1
  27     ln f1 f2
  28     ln -s f1 f3
  29     echo non-empty > sub/F; } )
  30
  31 du -a -L --exclude=sub --count-links dir \
  32   | sed 's/^[0-9][0-9]* //' | sort -r > out || fail=1
  33
  34 # For these tests, transform f1 or f2 or f3 (whichever name is find
  35 # first) to f_.  That is necessary because, depending on the type of
  36 # file system, du could encounter any of those linked files first,
  37 # thus listing that one and not the others.
  38 for args in '-L' 'dir' '-L dir'
  39 do
  40   echo === >> out
  41   du -a --exclude=sub $args dir \
  42     | sed 's/^[0-9][0-9]*       //' | sed 's/f[123]/f_/' >> out || fail=1
  43 done
  44
  45 cat <<\EOF > exp
  46 dir/f3
  47 dir/f2
  48 dir/f1
  49 dir
  50 ===
  51 dir/f_
  52 dir
  53 ===
  54 dir/f_
  55 dir/f_
  56 dir
  57 ===
  58 dir/f_
  59 dir
  60 EOF
  61
  62 compare exp out || fail=1
  63
  64 Exit $fail