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#!/bin/sh
# Ensure that the size of a long-named-symlink is > 0.
if test "$VERBOSE" = yes; then
set -x
du --version
fi
pwd=`pwd`
t0=`echo "$0"|sed 's,.*/,,'`.tmp; tmp=$t0/$$
trap 'status=$?; cd $pwd; chmod -R u+rwx $t0; rm -rf $t0 && exit $status' 0
trap '(exit $?); exit $?' 1 2 13 15
framework_failure=0
mkdir -p $tmp || framework_failure=1
cd $tmp || framework_failure=1
# Determine if `.' is on a local (would non-NFS be sufficient?) file system.
# On at least some NFS implementations, symlinks never take up space,
df --local . > tmp
# So if this is a non-local file system, skip the test.
if grep '^/' tmp > /dev/null; then
: # Ok.
else
echo "$0: skipping this test, since \`.' is on a non-local file system" 1>&2
(exit 77); exit
fi
if test $framework_failure = 1; then
echo "$0: failure in testing framework" 1>&2
(exit 1); exit 1
fi
fail=0
symlink_name_lengths='1 15 16 31 32 59 60 63 64 127 128 255 256 511 512 1024'
for len in $symlink_name_lengths; do
name=`yes|tr '\n' y|head -c$len`
# Record the names of symlinks that are successfully created.
ln -fs $name $len > /dev/null 2>&1 \
&& symlinks="$symlinks $len"
done
du -a $symlinks > out || fail=1
# Require that at least one of these symlinks has a non-zero size.
grep '^[1-9]' out > /dev/null || fail=1
(exit $fail); exit $fail
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