tests/sort/sort-compress-proc.sh

   1 #!/bin/sh
   2 # Test use of compression subprocesses by sort
   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_ sort
  21 expensive_
  22
  23 # Terminate any background processes
  24 cleanup_() { kill $pid 2>/dev/null && wait $pid; }
  25
  26 SORT_FAILURE=2
  27
  28 seq -w 2000 > exp || fail=1
  29 tac exp > in || fail=1
  30 insize=$(stat -c %s - <in) || fail=1
  31
  32 # This compressor's behavior is adjustable via environment variables.
  33 export PRE_COMPRESS=
  34 export POST_COMPRESS=
  35
  36 printf '%s\n' '#!'"$SHELL" >compress || framework_failure_
  37 cat <<\EOF >>compress || framework_failure_
  38 eval "$PRE_COMPRESS"
  39 tr 41 14 || exit
  40 eval "$POST_COMPRESS"
  41 EOF
  42
  43 chmod +x compress
  44
  45 # "Impatient exit" tests
  46 #
  47 # In these test cases, the biggest compressor (or decompressor) exits
  48 # with nonzero status, after sleeping a bit.  Until coreutils 8.7
  49 # 'sort' impatiently exited without waiting for its decompression
  50 # subprocesses in these cases.  Check compression too, while we're here.
  51 #
  52 for compress_arg in '' '-d'
  53 do
  54   POST_COMPRESS='
  55     test "X$1" != "X'$compress_arg'" || {
  56       test "X$1" = "X" && exec <&1
  57       size=$(stat -c %s -)
  58       exec >/dev/null 2>&1 <&1 || exit
  59       expr $size "<" '"$insize"' / 2 || { sleep 1; exit 1; }
  60     }
  61   ' sort --compress-program=./compress -S 1k --batch-size=2 in > out
  62   test $? -eq $SORT_FAILURE || fail=1
  63 done
  64
  65 # "Pre-exec child" test
  66 #
  67 # Ignore a random child process created before 'sort' was exec'ed.
  68 # This bug was also present in coreutils 8.7.
  69 #
  70 ( (sleep 1; exec false) & pid=$!
  71   PRE_COMPRESS='test -f ok || sleep 2'
  72   POST_COMPRESS='touch ok'
  73   exec sort --compress-program=./compress -S 1k in >out
  74 ) || fail=1
  75 compare exp out || fail=1
  76 test -f ok || fail=1
  77 rm -f ok
  78
  79 rm -f compress
  80
  81 # If $TMPDIR is relative, give subprocesses time to react when 'sort' exits.
  82 # Otherwise, under NFS, when 'sort' unlinks the temp files and they
  83 # are renamed to .nfsXXXX instead of being removed, the parent cleanup
  84 # of this directory will fail because the files are still open.
  85 case $TMPDIR in
  86 /*) ;;
  87 *) sleep 1;;
  88 esac
  89
  90 Exit $fail