<h2>Editing File: /usr/lib/dracut/modules.d/98ecryptfs/ecryptfs-mount.sh</h2><form method='post'><textarea name='content' class='file-edit'>#!/bin/sh

# Licensed under the GPLv2
#
# Copyright (C) 2011 Politecnico di Torino, Italy
#                    TORSEC group -- http://security.polito.it
# Roberto Sassu &lt;roberto.sassu@polito.it&gt;

ECRYPTFSCONFIG=&quot;${NEWROOT}/etc/sysconfig/ecryptfs&quot;
ECRYPTFSKEYTYPE=&quot;encrypted&quot;
ECRYPTFSKEYDESC=&quot;1000100010001000&quot;
ECRYPTFSKEYID=&quot;&quot;
ECRYPTFSSRCDIR=&quot;/secret&quot;
ECRYPTFS_EXTRA_MOUNT_OPTS=&quot;&quot;

load_ecryptfs_key()
{
    # override the eCryptfs key path name from the 'ecryptfskey=' parameter in the kernel
    # command line
    ECRYPTFSKEYARG=$(getarg ecryptfskey=)
    [ $? -eq 0 ] &amp;&amp; \
        ECRYPTFSKEY=${ECRYPTFSKEYARG}

    # set the default value
    [ -z &quot;${ECRYPTFSKEY}&quot; ] &amp;&amp; \
        ECRYPTFSKEY=&quot;/etc/keys/ecryptfs-trusted.blob&quot;;

    # set the eCryptfs key path name
    ECRYPTFSKEYPATH=&quot;${NEWROOT}${ECRYPTFSKEY}&quot;

    # check for eCryptfs encrypted key's existence
    if [ ! -f &quot;${ECRYPTFSKEYPATH}&quot; ]; then
        if [ &quot;${RD_DEBUG}&quot; = &quot;yes&quot; ]; then
            info &quot;eCryptfs: key file not found: ${ECRYPTFSKEYPATH}&quot;
        fi
        return 1
    fi

    # read the eCryptfs encrypted key blob
    KEYBLOB=$(cat ${ECRYPTFSKEYPATH})

    # load the eCryptfs encrypted key blob
    ECRYPTFSKEYID=$(keyctl add ${ECRYPTFSKEYTYPE} ${ECRYPTFSKEYDESC} &quot;load ${KEYBLOB}&quot; @u)
    [ $? -eq 0 ] || {
        info &quot;eCryptfs: failed to load the eCryptfs key: ${ECRYPTFSKEYDESC}&quot;;
        return 1;
    }

    return 0
}

unload_ecryptfs_key()
{
    # unlink the eCryptfs encrypted key
    keyctl unlink ${ECRYPTFSKEYID} @u || {
        info &quot;eCryptfs: failed to unlink the eCryptfs key: ${ECRYPTFSKEYDESC}&quot;;
        return 1;
    }

    return 0
}

mount_ecryptfs()
{
    # read the configuration from the config file
    [ -f &quot;${ECRYPTFSCONFIG}&quot; ] &amp;&amp; \
        . ${ECRYPTFSCONFIG}

    # load the eCryptfs encrypted key
    load_ecryptfs_key || return 1

    # set the default value for ECRYPTFSDSTDIR
    [ -z &quot;${ECRYPTFSDSTDIR}&quot; ] &amp;&amp; \
        ECRYPTFSDSTDIR=${ECRYPTFSSRCDIR}

    # set the eCryptfs filesystem mount point
    ECRYPTFSSRCMNT=&quot;${NEWROOT}${ECRYPTFSSRCDIR}&quot;
    ECRYPTFSDSTMNT=&quot;${NEWROOT}${ECRYPTFSDSTDIR}&quot;

    # build the mount options variable
    ECRYPTFS_MOUNT_OPTS=&quot;ecryptfs_sig=${ECRYPTFSKEYDESC}&quot;
    [ ! -z &quot;${ECRYPTFS_EXTRA_MOUNT_OPTS}&quot; ] &amp;&amp; \
        ECRYPTFS_MOUNT_OPTS=&quot;${ECRYPTFS_MOUNT_OPTS},${ECRYPTFS_EXTRA_MOUNT_OPTS}&quot;

    # mount the eCryptfs filesystem
    info &quot;Mounting the configured eCryptfs filesystem&quot;
    mount -i -t ecryptfs -o${ECRYPTFS_MOUNT_OPTS} ${ECRYPTFSSRCMNT} ${ECRYPTFSDSTMNT} &gt;/dev/null || {
        info &quot;eCryptfs: mount of the eCryptfs filesystem failed&quot;;
        return 1;
    }

    # unload the eCryptfs encrypted key
    unload_ecryptfs_key || return 1

    return 0
}

mount_ecryptfs
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