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proc
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self
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root
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lib
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dracut
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modules.d
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98ecryptfs
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Filename :
ecryptfs-mount.sh
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#!/bin/sh # Licensed under the GPLv2 # # Copyright (C) 2011 Politecnico di Torino, Italy # TORSEC group -- http://security.polito.it # Roberto Sassu <roberto.sassu@polito.it> ECRYPTFSCONFIG="${NEWROOT}/etc/sysconfig/ecryptfs" ECRYPTFSKEYTYPE="encrypted" ECRYPTFSKEYDESC="1000100010001000" ECRYPTFSKEYID="" ECRYPTFSSRCDIR="/secret" ECRYPTFS_EXTRA_MOUNT_OPTS="" load_ecryptfs_key() { # override the eCryptfs key path name from the 'ecryptfskey=' parameter in the kernel # command line ECRYPTFSKEYARG=$(getarg ecryptfskey=) [ $? -eq 0 ] && \ ECRYPTFSKEY=${ECRYPTFSKEYARG} # set the default value [ -z "${ECRYPTFSKEY}" ] && \ ECRYPTFSKEY="/etc/keys/ecryptfs-trusted.blob"; # set the eCryptfs key path name ECRYPTFSKEYPATH="${NEWROOT}${ECRYPTFSKEY}" # check for eCryptfs encrypted key's existence if [ ! -f "${ECRYPTFSKEYPATH}" ]; then if [ "${RD_DEBUG}" = "yes" ]; then info "eCryptfs: key file not found: ${ECRYPTFSKEYPATH}" fi return 1 fi # read the eCryptfs encrypted key blob KEYBLOB=$(cat ${ECRYPTFSKEYPATH}) # load the eCryptfs encrypted key blob ECRYPTFSKEYID=$(keyctl add ${ECRYPTFSKEYTYPE} ${ECRYPTFSKEYDESC} "load ${KEYBLOB}" @u) [ $? -eq 0 ] || { info "eCryptfs: failed to load the eCryptfs key: ${ECRYPTFSKEYDESC}"; return 1; } return 0 } unload_ecryptfs_key() { # unlink the eCryptfs encrypted key keyctl unlink ${ECRYPTFSKEYID} @u || { info "eCryptfs: failed to unlink the eCryptfs key: ${ECRYPTFSKEYDESC}"; return 1; } return 0 } mount_ecryptfs() { # read the configuration from the config file [ -f "${ECRYPTFSCONFIG}" ] && \ . ${ECRYPTFSCONFIG} # load the eCryptfs encrypted key load_ecryptfs_key || return 1 # set the default value for ECRYPTFSDSTDIR [ -z "${ECRYPTFSDSTDIR}" ] && \ ECRYPTFSDSTDIR=${ECRYPTFSSRCDIR} # set the eCryptfs filesystem mount point ECRYPTFSSRCMNT="${NEWROOT}${ECRYPTFSSRCDIR}" ECRYPTFSDSTMNT="${NEWROOT}${ECRYPTFSDSTDIR}" # build the mount options variable ECRYPTFS_MOUNT_OPTS="ecryptfs_sig=${ECRYPTFSKEYDESC}" [ ! -z "${ECRYPTFS_EXTRA_MOUNT_OPTS}" ] && \ ECRYPTFS_MOUNT_OPTS="${ECRYPTFS_MOUNT_OPTS},${ECRYPTFS_EXTRA_MOUNT_OPTS}" # mount the eCryptfs filesystem info "Mounting the configured eCryptfs filesystem" mount -i -t ecryptfs -o${ECRYPTFS_MOUNT_OPTS} ${ECRYPTFSSRCMNT} ${ECRYPTFSDSTMNT} >/dev/null || { info "eCryptfs: mount of the eCryptfs filesystem failed"; return 1; } # unload the eCryptfs encrypted key unload_ecryptfs_key || return 1 return 0 } mount_ecryptfs