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#!/bin/sh
# ensure that cp --preserve=link --link doesn't waste heap
# Copyright (C) 2008-2020 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/>.
. "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
print_ver_ cp
expensive_
# Determine basic amount of memory needed for 'cp -al'.
touch f || framework_failure_
vm=$(get_min_ulimit_v_ cp -al f f2) \
|| skip_ "this shell lacks ulimit support"
rm f f2 || framework_failure_
a=$(printf %031d 0)
b=$(printf %031d 1)
(mkdir $a \
&& cd $a \
&& seq --format=%031g 10000 |xargs touch \
&& seq --format=d%030g 10000 |xargs mkdir ) || framework_failure_
cp -al $a $b || framework_failure_
mkdir e || framework_failure_
mv $a $b e || framework_failure_
# Allow cp(1) to use 4MiB more virtual memory than for the above trivial case.
(ulimit -v $(($vm+4000)) && cp -al e f) || fail=1
Exit $fail
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