tests/cp/sparse.sh

   1 #!/bin/sh
   2 # Test cp --sparse=always
   3
   4 # Copyright (C) 2006-2016 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 <http://www.gnu.org/licenses/>.
  18
  19 . "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
  20 print_ver_ cp
  21 require_sparse_support_
  22
  23 # Create a sparse file.
  24 # It has to be at least 128K in order to be sparse on some systems.
  25 # Make its size one larger than 128K, in order to tickle the
  26 # bug in coreutils-6.0.
  27 size=$(expr 128 \* 1024 + 1)
  28 dd bs=1 seek=$size of=sparse < /dev/null 2> /dev/null || framework_failure_
  29
  30
  31 cp --sparse=always sparse copy || fail=1
  32
  33 # Ensure that the copy has the same block count as the original.
  34 test $(stat --printf %b copy) -le $(stat --printf %b sparse) || fail=1
  35
  36 # Ensure that --sparse={always,never} with --reflink fail.
  37 returns_ 1 cp --sparse=always --reflink sparse copy || fail=1
  38 returns_ 1 cp --sparse=never --reflink sparse copy || fail=1
  39
  40
  41 # Ensure we handle sparse/non-sparse transitions correctly
  42 maxn=128 # how many $hole_size chunks per file
  43 hole_size=$(stat -c %o copy)
  44 dd if=/dev/zero bs=$hole_size count=$maxn of=zeros || framework_failure_
  45 tr '\0' 'U' < zeros > nonzero || framework_failure_
  46
  47 for pattern in 1 0; do
  48   test "$pattern" = 1 && pattern="$(printf '%s\n%s' nonzero zeros)"
  49   test "$pattern" = 0 && pattern="$(printf '%s\n%s' zeros nonzero)"
  50
  51   for n in 1 2 4 11 32 $maxn; do
  52     parts=$(expr $maxn / $n)
  53
  54     rm -f sparse.in
  55
  56     # Generate non sparse file for copying with alternating
  57     # hole/data patterns of size n * $hole_size
  58     for i in $(yes "$pattern" | head -n$parts); do
  59       dd iflag=fullblock if=$i of=sparse.in conv=notrunc oflag=append \
  60          bs=$hole_size count=$n status=none || framework_failure_
  61     done
  62
  63     cp --sparse=always sparse.in sparse.out   || fail=1 # non sparse input
  64     cp --sparse=always sparse.out sparse.out2 || fail=1 # sparse input
  65
  66     cmp sparse.in sparse.out || fail=1
  67     cmp sparse.in sparse.out2 || fail=1
  68
  69     ls -lsh sparse.*
  70   done
  71 done
  72
  73 Exit $fail