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#!/bin/sh
# Test cp --sparse=always
# Copyright (C) 2006-2020 Free Software Foundation, Inc.
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <https://www.gnu.org/licenses/>.
. "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
print_ver_ cp
require_sparse_support_
# Create a sparse file.
# It has to be at least 128K in order to be sparse on some systems.
# Make its size one larger than 128K, in order to tickle the
# bug in coreutils-6.0.
size=$(expr 128 \* 1024 + 1)
dd bs=1 seek=$size of=sparse < /dev/null 2> /dev/null || framework_failure_
cp --sparse=always sparse copy || fail=1
# Ensure that the copy has the same block count as the original.
test $(stat --printf %b copy) -le $(stat --printf %b sparse) || fail=1
# Ensure that --sparse={always,never} with --reflink fail.
returns_ 1 cp --sparse=always --reflink sparse copy || fail=1
returns_ 1 cp --sparse=never --reflink sparse copy || fail=1
# Ensure we handle sparse/non-sparse transitions correctly
maxn=128 # how many $hole_size chunks per file
hole_size=$(stat -c %o copy)
dd if=/dev/zero bs=$hole_size count=$maxn of=zeros || framework_failure_
tr '\0' 'U' < zeros > nonzero || framework_failure_
for pattern in 1 0; do
test "$pattern" = 1 && pattern="$(printf '%s\n%s' nonzero zeros)"
test "$pattern" = 0 && pattern="$(printf '%s\n%s' zeros nonzero)"
for n in 1 2 4 11 32 $maxn; do
parts=$(expr $maxn / $n)
rm -f sparse.in
# Generate non sparse file for copying with alternating
# hole/data patterns of size n * $hole_size
for i in $(yes "$pattern" | head -n$parts); do
dd iflag=fullblock if=$i of=sparse.in conv=notrunc oflag=append \
bs=$hole_size count=$n status=none || framework_failure_
done
cp --sparse=always sparse.in sparse.out || fail=1 # non sparse input
cp --sparse=always sparse.out sparse.out2 || fail=1 # sparse input
cmp sparse.in sparse.out || fail=1
cmp sparse.in sparse.out2 || fail=1
ls -lsh sparse.*
done
done
Exit $fail
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