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52 lines
1.7 KiB
Bash
Executable File
52 lines
1.7 KiB
Bash
Executable File
#!/bin/sh
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# ensure that stat attempts birthtime access
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# Copyright (C) 2010-2012 Free Software Foundation, Inc.
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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. "${srcdir=.}/init.sh"; path_prepend_ ../src
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print_ver_ stat
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# Whether birthtime is supported or not, it better not change even when
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# [acm]time are modified. :)
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touch a || fail=1
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btime=$(stat --format %W a) || fail=1
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atime=$(stat --format %X a) || fail=1
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mtime=$(stat --format %Y a) || fail=1
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ctime=$(stat --format %Z a) || fail=1
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# Wait up to 2.17s for timestamps to change.
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# ----------------------------------------
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# iterations file system resolution e.g.
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# ----------------------------------------
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# 1 nano or micro second ext4
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# 4 1 second ext3
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# 5 2 second FAT
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# ----------------------------------------
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check_timestamps_updated()
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{
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local delay="$1"
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sleep $delay
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touch a || fail=1
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test "x$btime" = x$(stat --format %W a) &&
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test "x$atime" != x$(stat --format %X a) &&
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test "x$mtime" != x$(stat --format %Y a) &&
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test "x$ctime" != x$(stat --format %Z a)
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}
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retry_delay_ check_timestamps_updated .07 5 || fail=1
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Exit $fail
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