tests/misc/sort-compress-hang.sh

   1 #!/bin/sh
   2 # Test for sort --compress hang
   3
   4 # Copyright (C) 2010-2019 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 . "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
  20 print_ver_ sort
  21 very_expensive_
  22
  23 cat <<EOF >compress || framework_failure_
  24 #!$SHELL
  25 tr 41 14 || exit
  26 touch ok
  27 EOF
  28
  29 chmod +x compress
  30
  31 seq -w 200000 > exp || fail=1
  32 tac exp > in || fail=1
  33
  34 # When the bug occurs, 'sort' hangs forever.  When it doesn't occur,
  35 # 'sort' could be running slowly on an overburdened machine.
  36 # On a circa-2010 Linux server using NFS, a successful test completes
  37 # in about 170 seconds, so specify 1700 seconds as a safety margin.
  38 # Note --foreground will not kill any of the "compress" sub processes,
  39 # assuming they're well behaved and exit in a timely manner, but will
  40 # allow this command to be responsive to Ctrl-C
  41 timeout --foreground 1700 sort --compress-program=./compress -S 1k in > out \
  42   || fail=1
  43
  44 compare exp out || fail=1
  45 test -f ok || fail=1
  46 rm -f compress ok
  47
  48 # If $TMPDIR is relative, give subprocesses time to react when 'sort' exits.
  49 # Otherwise, under NFS, when 'sort' unlinks the temp files and they
  50 # are renamed to .nfsXXXX instead of being removed, the parent cleanup
  51 # of this directory will fail because the files are still open.
  52 case $TMPDIR in
  53 /*) ;;
  54 *) sleep 1;;
  55 esac
  56
  57 Exit $fail