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if [ ! -x ${ROOTFS}/bin/true ] || [ -h /bin/true ] || [ -h /bin ] || [ -z `which mcookie` ] || [ -z `which true` ] || [ -z `which mkdir` ] || [ -z `which ln` ] || [ -z `which rm` ]; then
exit 125;
fi
TMP=/tmp/$(mcookie)
mkdir -p ${ROOTFS}/${TMP}
A=$(mcookie)
B=$(mcookie)
! ln -s /bin/true -r ${ROOTFS}/${TMP}/${A}
! ln -s ${TMP}/${A} -r ${ROOTFS}/${TMP}/${B}
if [ ! -e ${ROOTFS}/${TMP}/${A} ]; then
exit 125;
fi
env PATH=${TMP} ${PROOT} -r ${ROOTFS} ${B}
rm -f ${TMP}/${B} # just in case it also exists in the host env.
${PROOT} -r ${ROOTFS} /${TMP}/${B}
rm -fr ${ROOTFS}/${TMP}
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