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