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#!/bin/sh
# Verify that cp -Pp preserves times even on symlinks.
# Copyright (C) 2009-2018 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/>.
. "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
print_ver_ cp
grep '^#define HAVE_UTIMENSAT 1' "$CONFIG_HEADER" > /dev/null ||
grep '^#define HAVE_LUTIMES 1' "$CONFIG_HEADER" > /dev/null ||
skip_ 'this system lacks the utimensat function'
ln -s no-such dangle || framework_failure_
# If the current file system lacks sub-second resolution, sleep for 2s to
# ensure that the times on the copy are different from those of the original.
case $(stat --format=%y dangle) in
??:??:??.000000000) sleep 2;;
esac
copy_timestamp_() {
sleep $1
rm -f d2
cp -Pp dangle d2 || framework_failure_
# Can't use --format=%x, as lstat() modifies atime on some platforms.
stat --format=%y dangle > t1 || framework_failure_
stat --format=%y d2 > t2 || framework_failure_
compare t1 t2
}
# We retry with a delay at least 1.5s because on GPFS
# it was seen that the timestamp wasn't updated unless there
# was sufficient delay between the ln and cp.
# I.e., if there wasn't sufficient difference in
# the timestamp being updated, the update was discarded.
retry_delay_ copy_timestamp_ .1 4 || fail=1
Exit $fail
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