lib/t-chdir-long

   1 #!/bin/sh
   2 # Exercise chdir-long's sample main program.
   3
   4 # Copyright (C) 2005-2022 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
  20 # FIXME: add traps and choose top level names so that
  21 # temporary directories are easier to remove.
  22 # FIXME: don't clobber a.out
  23
  24 gcc -DTEST_CHDIR -g -O -W -Wall \
  25   chdir-long.c libcoreutils.a
  26
  27 vg='valgrind --track-fds=yes --leak-check=yes --quiet --num-callers=9'
  28 vg="$vg --leak-resolution=high"
  29
  30 # Create a directory with name of the specified length.
  31 # Caveat: assumes the requested length is longer than that of $TMPDIR or /tmp.
  32 function mkdir_len
  33 {
  34   local n
  35   case $# in 1) n=$1;; *) echo "Usage: $FUNCNAME N" 1>&2; return 1;; esac
  36   local root=${TMPDIR=/tmp}
  37   test -n "$ROOT" && root=$ROOT
  38   ( cd $root &&
  39     perl -e 'my $len='$n'-length "'$root'";$i=100;$d="z"x$i;
  40                   while ($i+2 < $len) {
  41                     $len -= $i + 1;
  42                     mkdir $d,0700 or die "$!\n";
  43                     chdir $d} $d="z"x($len-1);
  44                     mkdir $d or die "mkdir_len: $d: $!\n"' )
  45 }
  46
  47 size_list=
  48 pow_2=128
  49 for i in 7 8 9 10 11 12 13 14 15 16 17; do
  50   n=$pow_2
  51   nm1=`expr $pow_2 - 1`
  52   np1=`expr $pow_2 + 1`
  53   size_list="$size_list $nm1 $n $np1"
  54   pow_2=`expr $pow_2 \* 2`
  55 done
  56
  57 for t in . /t /tmp /var/tmp; do
  58   test -d $t || continue
  59   printf "$t\n"
  60   export TMPDIR=$t
  61   for i in `echo $size_list 99999 11`; do
  62     printf "$t\t$i\n"
  63     mkdir_len $i
  64     find $TMPDIR/zz*|tail -n1 > in
  65     tt=`echo $t|tr / -`
  66     # strace -o /t/k-$tt-$i ./a.out < in > out
  67     ./a.out < in > out
  68     # eval "$vg ./a.out no-pwd < in"
  69     rm -rf $TMPDIR/zz*
  70     if test "$TMPDIR" = . ; then
  71       (pwd|tr -d '\n'; sed 's/^\.//' in) > k; rm -f in; mv k in
  72     fi
  73     diff -u in out > diff \
  74       || { echo FAIL $t:$i; cut -b 1-35 diff; } \
  75       && rm -f diff in out
  76   done
  77 done
  78
  79 rm -f a.out