1 files changed, 83 insertions, 0 deletions
diff --git a/tests/mv/childproof.sh b/tests/mv/childproof.sh
new file mode 100755
index 0000000..a32b82e
--- /dev/null
+++ b/tests/mv/childproof.sh
@@ -0,0 +1,83 @@
+#!/bin/sh
+# Ensure that cp/mv/ln don't clobber a just-copied/moved/linked file.
+# With fileutils-4.1 and earlier, this test would fail for cp and mv.
+# With coreutils-6.9 and earlier, this test would fail for ln.
+
+# Copyright (C) 2001-2020 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/>.
+
+. "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
+print_ver_ cp mv ln
+
+skip_if_root_
+
+mkdir a b c || framework_failure_
+echo a > a/f || framework_failure_
+echo b > b/f || framework_failure_
+
+
+returns_ 1 cp a/f b/f c 2> /dev/null || fail=1
+test -f a/f || fail=1
+test -f b/f || fail=1
+test -f c/f || fail=1
+test "$(cat c/f)" = a || fail=1
+rm -f c/f
+
+# With --backup=numbered, it should succeed
+cp --backup=numbered a/f b/f c || fail=1
+test -f a/f || fail=1
+test -f b/f || fail=1
+test -f c/f || fail=1
+test -f c/f.~1~ || fail=1
+rm -f c/f*
+
+returns_ 1 mv a/f b/f c 2> /dev/null || fail=1
+test -f a/f && fail=1
+test -f b/f || fail=1
+test -f c/f || fail=1
+test "$(cat c/f)" = a || fail=1
+
+# Make sure mv still works when moving hard links.
+# This is where the same_file test is necessary, and why
+# we save file names in addition to dev/ino.
+rm -f c/f* b/f
+touch a/f
+ln a/f b/g
+mv a/f b/g c || fail=1
+test -f a/f && fail=1
+test -f b/g && fail=1
+test -f c/f || fail=1
+test -f c/g || fail=1
+
+touch a/f b/f b/g
+returns_ 1 mv a/f b/f b/g c 2> /dev/null || fail=1
+test -f a/f && fail=1  # a/f should have been moved
+test -f b/f || fail=1  # b/f should remain
+test -f b/g && fail=1  # b/g should have been moved
+test -f c/f || fail=1
+test -f c/g || fail=1
+
+# Test ln -f.
+
+rm -f a/f b/f c/f
+echo a > a/f || framework_failure_
+echo b > b/f || framework_failure_
+returns_ 1 ln -f a/f b/f c 2> /dev/null || fail=1
+# a/f and c/f must be linked
+test $(stat --format %i a/f) = $(stat --format %i c/f) || fail=1
+# b/f and c/f must not be linked
+test $(stat --format %i b/f) = $(stat --format %i c/f) && fail=1
+
+Exit $fail