set -e

P=${TMPDIR:-/tmp}
cd $P
T=$(mktemp -d sh-test.XXXXXX)

chmod 0 $T
if [ `id -u` -ne 0 ]; then
	# Root can always cd, regardless of directory permissions.
	cd -L $T 2>/dev/null && exit 1
	[ "$PWD" = "$P" ]
	[ "$(pwd)" = "$P" ]
	cd -P $T 2>/dev/null && exit 1
	[ "$PWD" = "$P" ]
	[ "$(pwd)" = "$P" ]
fi

chmod 755 $T
cd $T
mkdir -p 1/2/3
ln -s 1/2 link1
ln -s 2/3 1/link2
(cd -L 1/../1 && [ "$(pwd -L)" = "$P/$T/1" ])
(cd -L link1 && [ "$(pwd -L)" = "$P/$T/link1" ])
(cd -L link1 && [ "$(pwd -P)" = "$P/$T/1/2" ])
(cd -P link1 && [ "$(pwd -L)" = "$P/$T/1/2" ])
(cd -P link1 && [ "$(pwd -P)" = "$P/$T/1/2" ])

rm -rf ${P}/${T}