#!/bin/sh # ensure that stat attempts birthtime access # Copyright (C) 2010-2017 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 . . "${srcdir=.}/tests/init.sh"; path_prepend_ ./src print_ver_ stat # Whether birthtime is supported or not, it better not change even when # [acm]time are modified. :) touch a || fail=1 btime=$(stat --format %W a) || fail=1 atime=$(stat --format %X a) || fail=1 mtime=$(stat --format %Y a) || fail=1 ctime=$(stat --format %Z a) || fail=1 # Wait up to 2.17s for timestamps to change. # ---------------------------------------- # iterations file system resolution e.g. # ---------------------------------------- # 1 nano or micro second ext4 # 4 1 second ext3 # 5 2 second FAT # ---------------------------------------- check_timestamps_updated() { local delay="$1" sleep $delay touch a || fail=1 test "x$btime" = x$(stat --format %W a) && test "x$atime" != x$(stat --format %X a) && test "x$mtime" != x$(stat --format %Y a) && test "x$ctime" != x$(stat --format %Z a) } retry_delay_ check_timestamps_updated .07 5 || fail=1 Exit $fail