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#!/bin/sh
# Ensure that using `cp --preserve=link' to copy hard-linked arguments
# onto existing destinations works, even when one of the link operations fails.
# Copyright (C) 2003, 2006, 2007 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 <http://www.gnu.org/licenses/>.
# This bug was fixed in coreutils-4.5.9.
# To exercise this bug is non-trivial:
# Set-up requires at least three hard-linked files. In copying them,
# while preserving links, the initial copy must succeed, the attempt
# to create the second file via `link' must fail, and the final `link'
# (to create the third) must succeed. Before the corresponding fix,
# the first and third destination files would not be linked.
#
# Note that this is nominally a test of `cp', yet it is in the tests/mv
# directory, because it requires use of the --preserve=link option that
# mv enables by default.
if test "$VERBOSE" = yes; then
set -x
cp --version
fi
. $srcdir/../envvar-check
PRIV_CHECK_ARG=require-non-root . $srcdir/../priv-check
pwd=`pwd`
t0=`echo "$0"|sed 's,.*/,,'`.tmp; tmp=$t0/$$
trap 'status=$?; cd "$pwd" && chmod -R u+rwx $t0 && rm -rf $t0 && exit $status' 0
trap '(exit $?); exit $?' 1 2 13 15
framework_failure=0
mkdir -p $tmp || framework_failure=1
cd $tmp || framework_failure=1
mkdir -p x dst/x || framework_failure=1
touch dst/x/b || framework_failure=1
chmod a-w dst/x
touch a || framework_failure=1
ln a x/b || framework_failure=1
ln a c || framework_failure=1
if test $framework_failure = 1; then
echo "$0: failure in testing framework" 1>&2
(exit 1); exit 1
fi
fail=0
# ======================================
# This must fail -- because x/b cannot be unlinked.
cp --preserve=link --parents a x/b c dst 2> /dev/null && fail=1
# Source files must remain.
test -f a || fail=1
test -f x/b || fail=1
test -f c || fail=1
cd dst
# Three destination files must exist.
test -f a || fail=1
test -f x/b || fail=1
test -f c || fail=1
# The i-node numbers of a and c must be the same.
ia=`ls -i a` || fail=1; set x $ia; ia=$2
ic=`ls -i c` || fail=1; set x $ic; ic=$2
test "$ia" = "$ic" || fail=1
# The i-node number of x/b must be different.
ib=`ls -i x/b` || fail=1; set x $ib; ib=$2
test "$ia" = "$ib" && fail=1
(exit $fail); exit $fail
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