tests/touch/empty-file.sh

   1 #!/bin/sh
   2 # Make sure touch can set the mtime on an empty file.
   3
   4 # Copyright (C) 1998-2017 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
  20 # Volker Borchert reported that touch 3.16r (and presumably all before that)
  21 # fails to work on SunOS 4.1.3 with 'most of the recommended patches' when
  22 # the empty file is on an NFS-mounted 4.2 volume.
  23
  24 . "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
  25 print_ver_ touch
  26
  27 DEFAULT_SLEEP_SECONDS=2
  28 SLEEP_SECONDS=${SLEEP_SECONDS=$DEFAULT_SLEEP_SECONDS}
  29
  30
  31 # FIXME: find writable directories on other partitions
  32 # and run the test in those directories, too.
  33
  34 : ${TOUCH_DIR_LIST=.}
  35
  36
  37 for d in $TOUCH_DIR_LIST; do
  38   rm -rf $d/a $d/b $d/c
  39   > $d/a || framework_failure_
  40   test -f $d/a || framework_failure_
  41   > $d/b || framework_failure_
  42   test -f $d/b || framework_failure_
  43   > $d/c || framework_failure_
  44   test -f $d/c || framework_failure_
  45 done
  46
  47 echo sleeping for $SLEEP_SECONDS seconds...
  48 sleep $SLEEP_SECONDS
  49 for d in $TOUCH_DIR_LIST; do
  50   touch $d/a || fail=1
  51   set x $(ls -t $d/a $d/b)
  52   test "$*" = "x $d/a $d/b" || fail=1
  53 done
  54
  55 echo sleeping for $SLEEP_SECONDS seconds...
  56 sleep $SLEEP_SECONDS
  57 for d in $TOUCH_DIR_LIST; do
  58   touch $d/b
  59   set x $(ls -t $d/a $d/b)
  60   test "$*" = "x $d/b $d/a" || fail=1
  61
  62   if touch - 1< $d/c 2> /dev/null; then
  63     set x $(ls -t $d/a $d/c)
  64     test "$*" = "x $d/c $d/a" || fail=1
  65   fi
  66
  67   rm -rf $d/a $d/b $d/c
  68 done
  69
  70 if test $fail != 0; then
  71   cat 1>&2 <<EOF
  72 *** This test has just failed.  That can happen when the test is run in an
  73 *** NFS-mounted directory on a system whose clock is not well synchronized
  74 *** with that of the NFS server.  If you think that is the reason, set the
  75 *** environment variable SLEEP_SECONDS to some number of seconds larger than
  76 *** the default of $DEFAULT_SLEEP_SECONDS and rerun the test.
  77 EOF
  78 fi
  79
  80 Exit $fail