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57 lines
1.5 KiB
Bash
Executable File
57 lines
1.5 KiB
Bash
Executable File
#!/bin/sh
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# Use du to exercise a corner of fts's FTS_LOGICAL code.
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# Show that du fails with ELOOP (Too many levels of symbolic links)
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# when it encounters that condition.
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if test "$VERBOSE" = yes; then
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set -x
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du --version
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fi
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. $srcdir/../lang-default
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pwd=`pwd`
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t0=`echo "$0"|sed 's,.*/,,'`.tmp; tmp=$t0/$$
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trap 'status=$?; cd $pwd; chmod -R u+rwx $t0; rm -rf $t0 && exit $status' 0
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trap '(exit $?); exit $?' 1 2 13 15
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framework_failure=0
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mkdir -p $tmp || framework_failure=1
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cd $tmp || framework_failure=1
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# Create lots of directories, each containing a single symlink
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# pointing at the next directory in the list.
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# This number should be larger than the number of symlinks allowed in
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# file name resolution, but not too large as a number of entries
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# in a single directory.
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n=400
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dir_list=`seq $n`
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mkdir $dir_list || framework_failure=1
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for i in $dir_list; do
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ip1=`expr $i + 1`
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ln -s ../$ip1 $i/s || framework_failure=1
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done
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if test $framework_failure = 1; then
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echo "$0: failure in testing framework" 1>&2
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(exit 1); exit 1
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fi
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fail=0
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# With coreutils-5.93 there was no failure.
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# With coreutils-5.94 we get a diagnostic like this:
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# du: cannot access `1/s/s/s/.../s': Too many levels of symbolic links
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du -L 1 > /dev/null 2> out1 && fail=1
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sed "s,1/s/s/s/[/s]*','," out1 > out || fail=1
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cat <<\EOF > exp || fail=1
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du: cannot access `': Too many levels of symbolic links
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EOF
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cmp out exp || fail=1
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test $fail = 1 && diff out exp 2> /dev/null
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(exit $fail); exit $fail
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