tests/cp/preserve-slink-time.sh

   1 #!/bin/sh
   2 # Verify that cp -Pp preserves times even on symlinks.
   3
   4 # Copyright (C) 2009-2017 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 <http://www.gnu.org/licenses/>.
  18
  19 . "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
  20 print_ver_ cp
  21
  22 grep '^#define HAVE_UTIMENSAT 1' "$CONFIG_HEADER" > /dev/null ||
  23 grep '^#define HAVE_LUTIMES 1' "$CONFIG_HEADER" > /dev/null ||
  24   skip_ 'this system lacks the utimensat function'
  25
  26 ln -s no-such dangle || framework_failure_
  27
  28 # If the current file system lacks sub-second resolution, sleep for 2s to
  29 # ensure that the times on the copy are different from those of the original.
  30 case $(stat --format=%y dangle) in
  31   ??:??:??.000000000) sleep 2;;
  32 esac
  33
  34 copy_timestamp_() {
  35   sleep $1
  36   rm -f d2
  37   cp -Pp dangle d2 || framework_failure_
  38   # Can't use --format=%x, as lstat() modifies atime on some platforms.
  39   stat --format=%y dangle > t1 || framework_failure_
  40   stat --format=%y d2 > t2 || framework_failure_
  41   compare t1 t2
  42 }
  43
  44 # We retry with a delay at least 1.5s because on GPFS
  45 # it was seen that the timestamp wasn't updated unless there
  46 # was sufficient delay between the ln and cp.
  47 # I.e., if there wasn't sufficient difference in
  48 # the timestamp being updated, the update was discarded.
  49 retry_delay_ copy_timestamp_ .1 4 || fail=1
  50
  51 Exit $fail