diff options
author | root <root@rshg054.dnsready.net> | 2012-06-27 00:01:57 +0000 |
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committer | root <root@rshg054.dnsready.net> | 2012-06-27 00:01:57 +0000 |
commit | c77c7fc60c48c9aaa8f915eb112405e8879e46aa (patch) | |
tree | 46509cb375dc9d89676ab0d115c35629fc7326ae /testing/cryptsetup | |
parent | 9a6b691757346035549dbd12d1323301d04a6675 (diff) |
Wed Jun 27 00:01:57 UTC 2012
Diffstat (limited to 'testing/cryptsetup')
-rw-r--r-- | testing/cryptsetup/PKGBUILD | 35 | ||||
-rw-r--r-- | testing/cryptsetup/encrypt_hook | 138 | ||||
-rw-r--r-- | testing/cryptsetup/encrypt_install | 44 |
3 files changed, 217 insertions, 0 deletions
diff --git a/testing/cryptsetup/PKGBUILD b/testing/cryptsetup/PKGBUILD new file mode 100644 index 000000000..e089b8055 --- /dev/null +++ b/testing/cryptsetup/PKGBUILD @@ -0,0 +1,35 @@ +# $Id: PKGBUILD 162353 2012-06-25 18:43:44Z thomas $ +# Maintainer: Thomas Bächler <thomas@archlinux.org> +pkgname=cryptsetup +pkgver=1.4.3 +pkgrel=1 +pkgdesc="Userspace setup tool for transparent encryption of block devices using dm-crypt" +arch=(i686 x86_64) +license=('GPL') +url="http://code.google.com/p/cryptsetup/" +groups=('base') +depends=('device-mapper>=2.02.85-2' 'libgcrypt' 'popt' 'util-linux') +conflicts=('mkinitcpio<0.7') +options=('!libtool' '!emptydirs') +source=(http://cryptsetup.googlecode.com/files/${pkgname}-${pkgver}.tar.bz2 + http://cryptsetup.googlecode.com/files/${pkgname}-${pkgver}.tar.bz2.asc + encrypt_hook + encrypt_install) +sha256sums=('d5ff2c00f6f791d77fa5636a02ae43ddbb46c6c793bdeafdec5e38fd15f99d0a' + 'ad610fe77d78bf7e91b7473f9d9c84de46ed1cc21f006fe3ae4791b0b6f42f3a' + 'e0cbcabb81233b4d465833dca0faf1e762dc3cb6611597a25fe24e5d7209f316' + 'cfe465bdad3d958bb2332a05e04f2e1e884422a5714dfd1a0a3b9b74bf7dc6ae') + +build() { + cd "${srcdir}"/$pkgname-${pkgver} + ./configure --prefix=/usr --disable-static + make +} + +package() { + cd "${srcdir}"/$pkgname-${pkgver} + make DESTDIR="${pkgdir}" install + # install hook + install -D -m644 "${srcdir}"/encrypt_hook "${pkgdir}"/usr/lib/initcpio/hooks/encrypt + install -D -m644 "${srcdir}"/encrypt_install "${pkgdir}"/usr/lib/initcpio/install/encrypt +} diff --git a/testing/cryptsetup/encrypt_hook b/testing/cryptsetup/encrypt_hook new file mode 100644 index 000000000..372b7ba57 --- /dev/null +++ b/testing/cryptsetup/encrypt_hook @@ -0,0 +1,138 @@ +#!/usr/bin/ash + +run_hook() { + modprobe -a -q dm-crypt >/dev/null 2>&1 + [ "${quiet}" = "y" ] && CSQUIET=">/dev/null" + + # Get keyfile if specified + ckeyfile="/crypto_keyfile.bin" + if [ -n "$cryptkey" ]; then + IFS=: read ckdev ckarg1 ckarg2 <<EOF +$cryptkey +EOF + + if resolved=$(resolve_device "${ckdev}" ${rootdelay}); then + case ${ckarg1} in + *[!0-9]*) + # Use a file on the device + # ckarg1 is not numeric: ckarg1=filesystem, ckarg2=path + mkdir /ckey + mount -r -t "$ckarg1" "$resolved" /ckey + dd if="/ckey/$ckarg2" of="$ckeyfile" >/dev/null 2>&1 + umount /ckey + ;; + *) + # Read raw data from the block device + # ckarg1 is numeric: ckarg1=offset, ckarg2=length + dd if="$resolved" of="$ckeyfile" bs=1 skip="$ckarg1" count="$ckarg2" >/dev/null 2>&1 + ;; + esac + fi + [ ! -f ${ckeyfile} ] && echo "Keyfile could not be opened. Reverting to passphrase." + fi + + if [ -n "${cryptdevice}" ]; then + DEPRECATED_CRYPT=0 + IFS=: read cryptdev cryptname cryptoptions <<EOF +$cryptdevice +EOF + else + DEPRECATED_CRYPT=1 + cryptdev="${root}" + cryptname="root" + fi + + warn_deprecated() { + echo "The syntax 'root=${root}' where '${root}' is an encrypted volume is deprecated" + echo "Use 'cryptdevice=${root}:root root=/dev/mapper/root' instead." + } + + for cryptopt in ${cryptoptions//,/ }; do + case ${cryptopt} in + allow-discards) + echo "Enabling TRIM/discard support." + cryptargs="${cryptargs} --allow-discards" + ;; + *) + echo "Encryption option '${cryptopt}' not known, ignoring." >&2 + ;; + esac + done + + if resolved=$(resolve_device "${cryptdev}" ${rootdelay}); then + if cryptsetup isLuks ${resolved} >/dev/null 2>&1; then + [ ${DEPRECATED_CRYPT} -eq 1 ] && warn_deprecated + dopassphrase=1 + # If keyfile exists, try to use that + if [ -f ${ckeyfile} ]; then + if eval cryptsetup --key-file ${ckeyfile} luksOpen ${resolved} ${cryptname} ${cryptargs} ${CSQUIET}; then + dopassphrase=0 + else + echo "Invalid keyfile. Reverting to passphrase." + fi + fi + # Ask for a passphrase + if [ ${dopassphrase} -gt 0 ]; then + echo "" + echo "A password is required to access the ${cryptname} volume:" + + #loop until we get a real password + while ! eval cryptsetup luksOpen ${resolved} ${cryptname} ${cryptargs} ${CSQUIET}; do + sleep 2; + done + fi + if [ -e "/dev/mapper/${cryptname}" ]; then + if [ ${DEPRECATED_CRYPT} -eq 1 ]; then + export root="/dev/mapper/root" + fi + else + err "Password succeeded, but ${cryptname} creation failed, aborting..." + exit 1 + fi + elif [ -n "${crypto}" ]; then + [ ${DEPRECATED_CRYPT} -eq 1 ] && warn_deprecated + msg "Non-LUKS encrypted device found..." + if echo "$crypto" | awk -F: '{ exit(NF == 5) }'; then + err "Verify parameter format: crypto=hash:cipher:keysize:offset:skip" + err "Non-LUKS decryption not attempted..." + return 1 + fi + exe="cryptsetup create $cryptname $resolved $cryptargs" + IFS=: read c_hash c_cipher c_keysize c_offset c_skip <<EOF +$crypto +EOF + [ -n "$c_hash" ] && exe="$exe --hash '$c_hash'" + [ -n "$c_cipher" ] && exe="$exe --cipher '$c_cipher'" + [ -n "$c_keysize" ] && exe="$exe --key-size '$c_keysize'" + [ -n "$c_offset" ] && exe="$exe --offset '$c_offset'" + [ -n "$c_skip" ] && exe="$exe --skip '$c_skip'" + if [ -f "$ckeyfile" ]; then + exe="$exe --key-file $ckeyfile" + else + exe="$exe --verify-passphrase" + echo "" + echo "A password is required to access the ${cryptname} volume:" + fi + eval "$exe $CSQUIET" + + if [ $? -ne 0 ]; then + err "Non-LUKS device decryption failed. verify format: " + err " crypto=hash:cipher:keysize:offset:skip" + exit 1 + fi + if [ -e "/dev/mapper/${cryptname}" ]; then + if [ ${DEPRECATED_CRYPT} -eq 1 ]; then + export root="/dev/mapper/root" + fi + else + err "Password succeeded, but ${cryptname} creation failed, aborting..." + exit 1 + fi + else + err "Failed to open encryption mapping: The device ${cryptdev} is not a LUKS volume and the crypto= paramater was not specified." + fi + fi + rm -f ${ckeyfile} +} + +# vim: set ft=sh ts=4 sw=4 et: diff --git a/testing/cryptsetup/encrypt_install b/testing/cryptsetup/encrypt_install new file mode 100644 index 000000000..38e5ddc57 --- /dev/null +++ b/testing/cryptsetup/encrypt_install @@ -0,0 +1,44 @@ +#!/bin/bash + +build() { + local mod + + add_module dm-crypt + if [[ $CRYPTO_MODULES ]]; then + for mod in $CRYPTO_MODULES; do + add_module "$mod" + done + else + add_all_modules '/crypto/' + fi + + add_binary "cryptsetup" + add_binary "dmsetup" + add_file "/usr/lib/udev/rules.d/10-dm.rules" + add_file "/usr/lib/udev/rules.d/13-dm-disk.rules" + add_file "/usr/lib/udev/rules.d/95-dm-notify.rules" + add_file "/usr/lib/initcpio/udev/11-dm-initramfs.rules" "/usr/lib/udev/rules.d/11-dm-initramfs.rules" + + add_runscript +} + +help() { + cat <<HELPEOF +This hook allows for an encrypted root device. Users should specify the device +to be unlocked using 'cryptdevice=device:dmname' on the kernel command line, +where 'device' is the path to the raw device, and 'dmname' is the name given to +the device after unlocking, and will be available as /dev/mapper/dmname. + +For unlocking via keyfile, 'cryptkey=device:fstype:path' should be specified on +the kernel cmdline, where 'device' represents the raw block device where the key +exists, 'fstype' is the filesystem type of 'device' (or auto), and 'path' is +the absolute path of the keyfile within the device. + +Without specifying a keyfile, you will be prompted for the password at runtime. +This means you must have a keyboard available to input it, and you may need +the keymap hook as well to ensure that the keyboard is using the layout you +expect. +HELPEOF +} + +# vim: set ft=sh ts=4 sw=4 et: |