1 files changed, 69 insertions, 0 deletions
diff --git a/tests/mv/hard-3.sh b/tests/mv/hard-3.sh
new file mode 100755
index 0000000..f2d9ac7
--- /dev/null
+++ b/tests/mv/hard-3.sh
@@ -0,0 +1,69 @@
+#!/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) 2003-2020 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/>.
+
+
+# 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.
+
+. "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
+print_ver_ cp
+skip_if_root_
+
+mkdir -p x dst/x || framework_failure_
+touch dst/x/b || framework_failure_
+chmod a-w dst/x
+touch a || framework_failure_
+ln a x/b || framework_failure_
+ln a c || framework_failure_
+
+
+# ======================================
+# This must fail -- because x/b cannot be unlinked.
+cp --preserve=link --parents a x/b c dst 2> /dev/null && fail=1
+
+# Source files must remain.
+test -f a || fail=1
+test -f x/b || fail=1
+test -f c || fail=1
+cd dst
+
+# Three destination files must exist.
+test -f a || fail=1
+test -f x/b || fail=1
+test -f c || fail=1
+
+# The i-node numbers of a and c must be the same.
+ia=$(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