tests/stat/stat-birthtime.sh

   1 #!/bin/sh
   2 # ensure that stat attempts birthtime access
   3
   4 # Copyright (C) 2010-2024 Free Software Foundation, Inc.
   5
   6 # This program is free software: you can redistribute it and/or modify
   7 # it under the terms of the GNU General Public License as published by
   8 # the Free Software Foundation, either version 3 of the License, or
   9 # (at your option) any later version.
  10
  11 # This program is distributed in the hope that it will be useful,
  12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 # GNU General Public License for more details.
  15
  16 # You should have received a copy of the GNU General Public License
  17 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
  18
  19 . "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
  20 print_ver_ stat
  21
  22 # Whether birthtime is supported or not, it better not change even when
  23 # [acm]time are modified.  :)
  24 touch a || fail=1
  25 btime=$(stat --format %W a) || fail=1
  26 atime=$(stat --format %X a) || fail=1
  27 mtime=$(stat --format %Y a) || fail=1
  28 ctime=$(stat --format %Z a) || fail=1
  29
  30 # Wait up to 2.17s for timestamps to change.
  31 # ----------------------------------------
  32 # iterations   file system resolution  e.g.
  33 # ----------------------------------------
  34 # 1            nano or micro second    ext4
  35 # 4            1 second                ext3
  36 # 5            2 second                FAT
  37 # ----------------------------------------
  38 check_timestamps_updated()
  39 {
  40   local delay="$1"
  41   sleep $delay
  42   touch a || fail=1
  43
  44   test "x$btime" = x$(stat --format %W a) &&
  45   { test "x$atime" != x$(stat --format %X a) || test "x$atime" = x0; } &&
  46   test "x$mtime" != x$(stat --format %Y a) &&
  47   test "x$ctime" != x$(stat --format %Z a)
  48 }
  49 retry_delay_ check_timestamps_updated .07 5 || fail=1
  50
  51 Exit $fail