1# $FreeBSD: head/bin/sh/tests/builtins/cd4.0 222154 2011-05-20 22:55:18Z jilles $ 2 3# This test assumes that whatever mechanism cd -P uses to determine the 4# pathname to the current directory if it is longer than PATH_MAX requires 5# read permission on all parent directories. It also works if this 6# requirement always applies. 7 8set -e 9L=$(getconf PATH_MAX / 2>/dev/null) || L=4096 10[ "$L" -lt 100000 ] 2>/dev/null || L=4096 11L=$((L+100)) 12T=$(mktemp -d ${TMPDIR:-/tmp}/sh-test.XXXXXX) 13trap 'chmod u+r ${T}; rm -rf ${T}' 0 14cd -Pe $T 15D=$(pwd) 16chmod u-r "$D" 17if [ -r "$D" ]; then 18 # Running as root, cannot test. 19 exit 0 20fi 21set +e 22while [ ${#D} -lt $L ]; do 23 mkdir veryverylongdirectoryname || exit 24 cd -Pe veryverylongdirectoryname 2>/dev/null 25 r=$? 26 [ $r -gt 1 ] && exit $r 27 if [ $r -eq 1 ]; then 28 # Verify that the directory was changed correctly. 29 cd -Pe .. || exit 30 [ "$(pwd)" = "$D" ] || exit 31 # Verify that omitting -e results in success. 32 cd -P veryverylongdirectoryname 2>/dev/null || exit 33 exit 0 34 fi 35 D=$D/veryverylongdirectoryname 36done 37echo "cd -Pe never returned 1" 38exit 0 39