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Your IP : 18.220.110.45
#!/bin/sh
PREREQ=""
prereqs()
{
echo "$PREREQ"
}
case $1 in
prereqs)
prereqs
exit 0
;;
esac
. /usr/share/initramfs-tools/hook-functions
# get_fs_devices() - determine source device(s) of mount point from /etc/fstab
#
# expected arguments:
# * fstab mount point (full path)
#
# This function searches for the first entry from /etc/fstab which has the
# given mountpoint set. It returns the canonical_device() of corresponding
# source device (first field in /etc/fstab entry).
# In case of btrfs, canoncial_device() of all btrfs source devices (possibly
# more than one) are returned.
#
get_fs_devices() {
local device mount type options dump pass
local wantmount="$1"
if [ ! -r /etc/fstab ]; then
return 1
fi
grep -s '^[^#]' /etc/fstab | \
while read device mount type options dump pass; do
if [ "$mount" = "$wantmount" ]; then
local devices
if [ "$type" = "btrfs" ]; then
for dev in $(btrfs filesystem show $(canonical_device "$device" --no-simplify) 2>/dev/null | sed -r -e 's/.*devid .+ path (.+)/\1/;tx;d;:x') ; do
devices="${devices:+$devices }$(canonical_device "$dev")"
done
else
devices=$(canonical_device "$device") || return 0
fi
printf '%s' "$devices"
return
fi
done
}
# get_resume_devices() - determine devices used for system suspend/hibernate
#
# expected arguments:
# * none
#
# This function searches well known places for devices that are used for system
# suspension and/or hibernation. It returns canonical_device() of any detected
# devices and prints a warning if more than one device is detected.
#
get_resume_devices() {
local device opt count dupe candidates devices derived
candidates=""
# First, get a list of potential resume devices
# uswsusp
if [ -e /etc/uswsusp.conf ]; then
device=$(sed -rn 's/^resume device[[:space:]]*[:=][[:space:]]*// p' /etc/uswsusp.conf)
if [ -n "$device" ]; then
candidates="${candidates:+$candidates }$device"
fi
fi
# uswsusp - again...
if [ -e /etc/suspend.conf ]; then
device=$(sed -rn 's/^resume device[[:space:]]*[:=][[:space:]]*// p' /etc/suspend.conf)
if [ -n "$device" ]; then
candidates="${candidates:+$candidates }$device"
fi
fi
# regular swsusp
for opt in $(cat /proc/cmdline); do
case $opt in
resume=*)
device="${opt#resume=}"
candidates="${candidates:+$candidates }$device"
;;
esac
done
# initramfs-tools >=0.129
device="${RESUME:-auto}"
if [ "$device" != none ]; then
if [ "$device" = auto ]; then
# next line from /usr/share/initramfs-tools/hooks/resume
device="$(grep ^/dev/ /proc/swaps | sort -rnk3 | head -n 1 | cut -d " " -f 1)"
if [ -n "$device" ]; then
device="UUID=$(blkid -s UUID -o value "$device" || true)"
fi
fi
candidates="${candidates:+$candidates }$device"
fi
# Now check the sanity of all candidates
devices=""
count=0
for device in $candidates; do
# Remove quotes around device candidate
device=$(printf '%s' "$device" | sed -r -e 's/^"(.*)"\s*$/\1/' -e "s/^'(.*)'\s*$/\1/")
# Weed out clever defaults
if [ "$device" = "<path_to_resume_device_file>" ]; then
continue
fi
# Detect devices required by decrypt_derived
derived=$(get_derived_device "$device")
if [ -n "$derived" ]; then
devices="${devices:+$devices }$derived"
fi
device=$(canonical_device "$device") || return 0
# Weed out duplicates
dupe=0
for opt in $devices; do
if [ "$device" = "$opt" ]; then
dupe=1
fi
done
if [ $dupe -eq 1 ]; then
continue
fi
# This device seems ok
devices="${devices:+$devices }$device"
count=$(( $count + 1 ))
done
if [ $count -gt 1 ]; then
echo "cryptsetup: WARNING: found more than one resume device candidate:" >&2
for device in $devices; do
echo " $device" >&2
done
fi
if [ $count -gt 0 ]; then
printf '%s' "$devices"
fi
return 0
}
# get_initramfs_devices() - determine devices with explicit 'initramfs' option
#
# expected arguments:
# * none
#
# This function processes entries from /etc/crypttab with the 'initramfs'
# option set. For each processed device, potential get_derived_device()
# devices are determined. The canonical_device() of each detected device
# is returned.
#
get_initramfs_devices() {
local device opt count dupe target source key options candidates devices derived
candidates="$(grep -s '^[^#]' /etc/crypttab | \
while read target source key options; do
if printf '%s' "$options" | grep -Eq "^(.*,)?initramfs(,.*)?$"; then
echo " /dev/mapper/$target"
fi
done;)"
devices=""
count=0
for device in $candidates; do
# Detect devices required by decrypt_derived
derived=$(get_derived_device "$device")
if [ -n "$derived" ]; then
devices="${devices:+$devices }$derived"
fi
device=$(canonical_device "$device") || return 0
# Weed out duplicates
dupe=0
for opt in $devices; do
if [ "$device" = "$opt" ]; then
dupe=1
fi
done
if [ $dupe -eq 1 ]; then
continue
fi
# This device seems ok
devices="${devices:+$devices }$device"
count=$(( $count + 1 ))
done
if [ $count -gt 0 ]; then
printf '%s' "$devices"
fi
return 0
}
# get_derived_device() - determine dependency devices for decrypt_derived
#
# expected arguments:
# * crypttab target device name (either <name> or /dev/mapper/<name>)
#
# This function takes a target device name and checks whether this device has
# the decrypt_derived keyscript set in /etc/crypttab. If true, the dependency
# device required for the decrypt_derived keyscript is detected and its
# canonical_device() returned if it's not listed in $rootdevs.
#
get_derived_device() {
local device derived
device="$1"
derived="$( awk -vtarget="${device#/dev/mapper/}" \
'$1 == target && $4 ~ /^(.*,)?keyscript=([^,]*\/)?decrypt_derived(,.*)?$/ {print $3; exit}' \
/etc/crypttab )"
if [ -n "$derived" ]; then
if node_is_in_crypttab "$derived"; then
derived=$(canonical_device "/dev/mapper/$derived") || return 0
if ! printf '%s' "$rootdevs" | tr ' ' '\n' | grep -Fxq "$derived"; then
printf '%s' "$derived"
fi
else
echo "cryptsetup: WARNING: decrypt_derived device $derived not found in crypttab" >&2
fi
fi
}
# node_is_in_crypttab() - test whether a device is configured in /etc/crypttab
#
# expected arguments:
# * crypttab target device names (without /dev/mapper/ prefix)
#
# This function takes a target device name and fails if it is not
# configured in /etc/crypttab.
#
node_is_in_crypttab() {
[ -f /etc/crypttab ] || return 1
sed -n '/^[^#]/ s/\s.*//p' /etc/crypttab | grep -Fxq "$1"
}
# node_or_pv_is_in_crypttab() - test whether devices are configured in /etc/crypttab
#
# expected arguments:
# * crypttab target device names (without /dev/mapper/ prefix), or LVM
# logical volume device-mapper name (format <VG>-<LV>)
#
# This function fails unless every argument is either a target device
# name configured in /etc/crypttab, or an LVM logical volume
# device-mapper name (format <VG>-<LV>) with only parents devices (PVs)
# configured in /etc/crypttab.
#
node_or_pv_is_in_crypttab() {
local node lvmnodes lvmnode
for node in "$@"; do
if ! node_is_in_crypttab "$node"; then
lvmnodes="$(get_lvm_deps "$node" --assert-crypt)" || return 1
[ "$lvmnodes" ] || return 1
for lvmnode in $lvmnodes; do
node_is_in_crypttab "$lvmnode" || return 1
done
fi
done
return 0
}
# get_lvm_deps() - determine the parent devices (PVs) of a LVM logical volume
#
# expected arguments:
# * LVM logical volume device-mapper name (format <VG>-<LV>)
# * optional options to the function
#
# This function takes a LVM logical volume name and determines the corresponding
# crypted physical volumes (PVs). It returns the name of the underlying
# device-mapper crypt devices (without /dev/mapper).
# If option '--assert-crypt' is given as second argument, then the
# function fails unless all PVs are dm-crypt devices.
#
get_lvm_deps() {
local node opt deps maj min depnode
node="$1"
opt="${2:-}"
if [ -z "$node" ]; then
echo "cryptsetup: WARNING: get_lvm_deps - invalid arguments" >&2
return 1
fi
if ! deps=$(vgs --noheadings -o pv_name $(dmsetup --noheadings splitname $node | cut -d':' -f1) 2>/dev/null); then
# $node is not a LVM node, stopping here
[ "$opt" != '--assert-crypt' ] && return 0 || return 1
fi
# We should now have a list of physical volumes for the VG
for dep in $deps; do
depnode=$(dmsetup info -c --noheadings -o name "$dep" 2>/dev/null)
if [ -z "$depnode" ]; then
[ "$opt" != '--assert-crypt' ] && continue || return 1
fi
if [ "$(dmsetup table "$depnode" 2>/dev/null | cut -d' ' -f3)" != "crypt" ]; then
get_lvm_deps "$depnode" $opt || return 1
continue
fi
printf '%s\n' "$depnode"
done
return 0
}
# get_device_opts() - determine and set options for a crypttab target device
#
# expected arguments:
# * crypttab target device name (without /dev/mapper/ prefix)
# * optional extra options
#
# This function determines options for a crypttab target device and sets them
# accordingly. In order to detect the options, it parses the corresponding
# /etc/crypttab entry and takes optional extra options as second argument.
# Some sanity checks are done on the corresponding source device and configured
# options.
# After everything is processed, the options are saved in '$OPTIONS' for later
# access by parent functions.
#
get_device_opts() {
local target source link extraopts rootopts opt key
target="$1"
extraopts="$2"
KEYSCRIPT=""
KEYFILE="" # key file to copy to the initramfs image
CRYPTHEADER=""
OPTIONS=""
if [ -z "$target" ]; then
echo "cryptsetup: WARNING: get_device_opts - invalid arguments" >&2
return 1
fi
opt="$( awk -vtarget="$target" '$1 == target {gsub(/[ \t]+/," "); print; exit}' /etc/crypttab )"
source=$( printf '%s' "$opt" | cut -d " " -f2 )
key=$( printf '%s' "$opt" | cut -d " " -f3 )
rootopts=$( printf '%s' "$opt" | cut -d " " -f4- )
if [ -z "$opt" ] || [ -z "$source" ] || [ -z "$key" ] || [ -z "$rootopts" ]; then
echo "cryptsetup: WARNING: invalid line in /etc/crypttab for $target - $opt" >&2
return 1
fi
# Sanity checks for $source
if [ -h "$source" ]; then
link=$(readlink -nqe "$source")
if [ -z "$link" ]; then
echo "cryptsetup: WARNING: $source is a dangling symlink" >&2
return 1
fi
if [ "$link" != "${link#/dev/mapper/}" ]; then
echo "cryptsetup: NOTE: using $link instead of $source for $target" >&2
source="$link"
fi
fi
if [ "UUID=${source#UUID=}" = "$source" -a ! -b "/dev/disk/by-uuid/${source#UUID=}" ] || [ "UUID=${source#UUID=}" != "$source" -a ! -b "$source" ]; then
echo "cryptsetup: WARNING: Invalid source device $source" >&2
fi
# Sanity checks for $key
if [ "$key" = "/dev/random" ] || [ "$key" = "/dev/urandom" ]; then
echo "cryptsetup: WARNING: target $target has a random key, skipped" >&2
return 1
fi
if [ -n "$extraopts" ]; then
rootopts="$extraopts,$rootopts"
fi
# We have all the basic options, let's go trough them
OPTIONS="target=$target,source=$source"
local IFS_BCK="$IFS"
local IFS=", "
unset HASH_FOUND
unset LUKS_FOUND
for opt in $rootopts; do
case $opt in
cipher=*)
OPTIONS="$OPTIONS,$opt"
;;
offset=*)
OPTIONS="$OPTIONS,$opt"
;;
skip=*)
OPTIONS="$OPTIONS,$opt"
;;
size=*)
OPTIONS="$OPTIONS,$opt"
;;
hash=*)
OPTIONS="$OPTIONS,$opt"
HASH_FOUND=1
;;
tries=*)
OPTIONS="$OPTIONS,$opt"
;;
discard)
OPTIONS="$OPTIONS,$opt"
;;
luks)
LUKS_FOUND=1
;;
header=*)
opt="${opt#header=}"
if [ ! -e "$opt" ]; then
echo "cryptsetup: WARNING: target $target has an invalid header, skipped" >&2
return 1
fi
CRYPTHEADER="$opt"
OPTIONS="$OPTIONS,header=$CRYPTHEADER"
;;
tcrypt)
OPTIONS="$OPTIONS,$opt"
;;
keyscript=*)
opt="${opt#keyscript=}"
if [ ! -x "/lib/cryptsetup/scripts/$opt" ] && [ ! -x "$opt" ]; then
echo "cryptsetup: WARNING: target $target has an invalid keyscript, skipped" >&2
return 1
fi
KEYSCRIPT="$opt"
OPTIONS="$OPTIONS,keyscript=/lib/cryptsetup/scripts/$(basename "$opt")"
;;
keyslot=*)
OPTIONS="$OPTIONS,$opt"
;;
veracrypt)
OPTIONS="$OPTIONS,$opt"
;;
lvm=*)
OPTIONS="$OPTIONS,$opt"
;;
rootdev)
OPTIONS="$OPTIONS,$opt"
;;
resumedev)
OPTIONS="$OPTIONS,$opt"
;;
*)
# Presumably a non-supported option
;;
esac
done
IFS="$IFS_BCK"
# Warn for missing hash option, unless we have a LUKS partition
if [ -z "$HASH_FOUND" ] && [ -z "$LUKS_FOUND" ]; then
echo "WARNING: Option hash missing in crypttab for target $target, assuming ripemd160." >&2
echo " If this is wrong, this initramfs image will not boot." >&2
echo " Please read /usr/share/doc/cryptsetup/README.initramfs.gz and add" >&2
echo " the correct hash option to your /etc/crypttab." >&2
fi
# Warn that header only applies to a LUKS partition currently
if [ -n "$CRYPTHEADER" ] && [ -z "$LUKS_FOUND" ]; then
echo "WARNING: Option LUKS missing in crypttab for target $target." >&2
echo " Headers are only supported for LUKS devices." >&2
fi
# If keyscript is set, the "key" is just an argument to the script
if [ "$key" != "none" ] && [ -z "$KEYSCRIPT" ]; then
case "$key" in
$KEYFILE_PATTERN)
KEYFILE="$key"
key="/cryptroot-keyfiles/${target}.key"
;;
*)
key=$(readlink -e "$key")
# test whether $target is a root device (or parent of the root device)
if printf '%s' "$OPTIONS" | grep -Eq '^(.*,)?rootdev(,.*)?$'; then
echo "cryptsetup: WARNING: root target $target uses a key file, skipped" >&2
return 1
# test whether a) key file is not on root fs
# or b) root fs is not encrypted
elif [ "$(stat -c %m -- "$key" 2>/dev/null)" != / ] || ! node_or_pv_is_in_crypttab $rootdevs; then
echo "cryptsetup: WARNING: $target's key file $key is not on an encrypted root FS, skipped" >&2
return 1
fi
if printf '%s' "$OPTIONS" | grep -Eq '^(.*,)?resumedev(,.*)?$'; then
# we'll be able to decrypt the device, but won't be able to use it for resuming
echo "cryptsetup: WARNING: resume device $source uses a key file" >&2
fi
# prepend "/root" (to be substituted by the real root FS
# mountpoint "$rootmnt" in the boot script) to the
# absolute filename
key="/root$key"
;;
esac
OPTIONS="$OPTIONS,keyscript=cat"
fi
OPTIONS="$OPTIONS,key=$key"
}
# get_device_modules() - determine required crypto kernel modules for device
#
# expected arguments:
# * crypttab target device name (without /dev/mapper/ prefix)
#
# This function determines the required crypto kernel modules for cipher,
# block cipher and optionally ivhash of the target device and returns them.
#
get_device_modules() {
local node value cipher blockcipher ivhash
node="$1"
# Check the ciphers used by the active root mapping
value=$(dmsetup table "$node" | cut -d " " -f4)
cipher=$(echo "$value" | cut -d ":" -f1 | cut -d "-" -f1)
blockcipher=$(echo "$value" | cut -d ":" -f1 | cut -d "-" -f2)
ivhash=$(echo "$value" | cut -d ":" -s -f2)
if [ -n "$cipher" ]; then
echo "$cipher"
else
return 1
fi
if [ -n "$blockcipher" ] && [ "$blockcipher" != "plain" ]; then
echo "$blockcipher"
fi
if [ -n "$ivhash" ] && [ "$ivhash" != "plain" ]; then
echo "$ivhash"
fi
return 0
}
# canonical_device() - determine the
#
# expected arguments:
# * device (either full path or LABEL=<x> or UUID=<y>)
# * optional options to the function
#
# This function takes a device as argument and determines the corresponding
# canonical device name.
# If option '--no-simplify' is given as second argument, then the origin device
# path after unraveling LABEL= and UUID= format and following symlinks is
# returned.
# If no option is given, the device is further unraveled and depending on the
# device path, either the corresponding device-mapper path (as found in
# /dev/mapper/) or the the corresponding disk symlink (as found in
# /dev/disk/by-*/) is returned.
#
canonical_device() {
local dev altdev original
dev="$1"
opt="$2"
if [ "${dev#LABEL=}" != "$dev" ]; then
altdev="${dev#LABEL=}"
dev="/dev/disk/by-label/$(printf '%s' "$altdev" | sed 's,/,\\x2f,g')"
elif [ "${dev#UUID=}" != "$dev" ]; then
altdev="${dev#UUID=}"
dev="/dev/disk/by-uuid/$altdev"
fi
original="$dev"
if [ -h "$dev" ]; then
dev=$(readlink -e "$dev")
fi
if [ "$opt" = "--no-simplify" ]; then
printf '%s' "$dev"
return 0
fi
if [ "x${dev%/dev/dm-*}" = "x" ]; then
# try to detect corresponding symlink in /dev/mapper/
for dmdev in /dev/mapper/*; do
if [ "$(readlink -e "$dmdev")" = "$dev" ]; then
dev="$dmdev"
fi
done
fi
altdev="${dev#/dev/mapper/}"
if [ "$altdev" != "$dev" ]; then
printf '%s' "$altdev"
return 0
elif [ "x${original%/dev/disk/by-*/*}" = "x" ]; then
# support crypttab UUID/LABEL entries
# this is a /dev/disk/by-*/ path so return just the 'basename'
echo "${original##/dev/disk/by-*/}"
return 0
fi
echo "cryptsetup: WARNING: failed to detect canonical device of $original" >&2
return 1
}
# add_device() - Process a given device and add to /conf/conf.d/cryptroot
#
# expected arguments:
# * device name (either crypttab target device name without /dev/mapper/ prefix
# or LVM device-mapper name in format '<VG>:<LV>')
#
# This function takes a device name, does all required processing and adds the
# result with all device options to /conf/conf.d/cryptroot in the initramfs.
# Additionally, it returns required kernel modules.
#
add_device() {
local node nodes lvmnodes opts lastopts i count
nodes="$1"
opts="" # Applied to all nodes
lastopts="" # Applied to last node
if [ -z "$nodes" ]; then
return 0
fi
# Flag root and resume devices
if printf '%s' "$rootdevs" | tr ' ' '\n' | grep -Fxq "$nodes"; then
opts="${opts:+$opts,}rootdev"
fi
if printf '%s' "$resumedevs" | tr ' ' '\n' | grep -Fxq "$nodes"; then
opts="${opts:+$opts,}resumedev"
fi
# Check that it is a node under /dev/mapper/
# nodes=$(canonical_device "$nodes") || return 0
# Can we find this node in crypttab
if ! node_is_in_crypttab "$nodes"; then
# dm node but not in crypttab, is it a lvm device backed by dm-crypt nodes?
lvmnodes=$(get_lvm_deps "$nodes") || return 1
# not backed by any dm-crypt nodes; stop here
if [ -z "$lvmnodes" ]; then
return 0
fi
# It is a lvm device!
opts="${opts:+$opts,}lvm=$nodes"
nodes="$lvmnodes"
fi
# Prepare to setup each node
count=$(printf '%s' "$nodes" | wc -w)
i=1
for node in $nodes; do
# Prepare the additional options
if [ $i -eq $count ]; then
if [ -n "$lastopts" ]; then
opts="${opts:+$opts,}$lastopts"
fi
fi
# Get crypttab root options
if ! get_device_opts "$node" "$opts"; then
continue
fi
printf '%s\n' "$OPTIONS" >>"$DESTDIR/conf/conf.d/cryptroot"
# If we have a keyscript, make sure it is included
if [ -n "$KEYSCRIPT" ]; then
if [ ! -d "$DESTDIR/lib/cryptsetup/scripts" ]; then
mkdir -p "$DESTDIR/lib/cryptsetup/scripts"
fi
if [ -e "/lib/cryptsetup/scripts/$KEYSCRIPT" ]; then
copy_exec "/lib/cryptsetup/scripts/$KEYSCRIPT" /lib/cryptsetup/scripts >&2
elif [ -e "$KEYSCRIPT" ]; then
copy_exec "$KEYSCRIPT" /lib/cryptsetup/scripts >&2
elif KSTYPE="$(type "$KEYSCRIPT" 2>&1)"; then
if [ -x "${KSTYPE#"$KEYSCRIPT" is }" ]; then
copy_exec "${KSTYPE#"$KEYSCRIPT" is }" /lib/cryptsetup/scripts >&2
fi
else
echo "cryptsetup: WARNING: failed to find keyscript $KEYSCRIPT" >&2
continue
fi
elif [ -n "$KEYFILE" ]; then
case "$KEYFILE" in
$KEYFILE_PATTERN)
mkdir -pm0700 "$DESTDIR/cryptroot-keyfiles"
cp --preserve=all "$KEYFILE" "$DESTDIR/cryptroot-keyfiles/${node}.key"
;;
esac
fi
# If we have a LUKS header, make sure it is included
# TODO: make it configurable to include the LUKS header into initramfs
# disabled for now due to security reasons
if [ -n "$CRYPTHEADER" ]; then
if [ ! -d "$DESTDIR/conf/conf.d/cryptheader" ]; then
mkdir -p "$DESTDIR/conf/conf.d/cryptheader"
fi
#if [ -e "$CONFDIR/conf.d/cryptheader/$CRYPTHEADER" ]; then
# copy_exec "$CONFDIR/conf.d/cryptheader/$CRYPTHEADER" /conf/conf.d/cryptheader >&2
#elif [ -e "$CRYPTHEADER" ]; then
# copy_exec "$CRYPTHEADER" /conf/conf.d/cryptheader >&2
#else
# echo "cryptsetup: WARNING: failed to find LUKS header $CRYPTHEADER" >&2
# continue
#fi
fi
# Calculate needed modules
modules=$(get_device_modules $node | sort | uniq)
if [ -z "$modules" ]; then
echo "cryptsetup: WARNING: failed to determine cipher modules to load for $node" >&2
continue
fi
echo dm_mod
echo dm_crypt
echo "$modules"
# Load hardware aes module
if cpu_has_aesni; then
echo aesni
fi
i=$(( $i + 1 ))
done
return 0
}
# cpu_has_aesni() - Detect whether the host CPU has AES-NI support
#
# expected arguments:
# * none
#
# This functions returns true when the host CPU has AES-NI support.
#
cpu_has_aesni() {
return $(grep -q "^flags\s*:\s*.*aes" /proc/cpuinfo)
}
# add_crypto_modules() - determine kernel module path and add to initramfs
#
# expected arguments:
# * kernel module name
#
# This function takes a kernel module name, determines the corresponding path
# and runs manual_add_modules() from initramfs hook functions to add the module
# to the initramfs.
#
add_crypto_modules() {
local mod file altmod found genericfound
mod="$1"
found=""
genericfound=""
if [ -z "$mod" ]; then
return 1
fi
# We have several potential sources of modules (in order of preference):
#
# a) /lib/modules/$VERSION/kernel/arch/$ARCH/crypto/$mod-$specific.ko
# b) /lib/modules/$VERSION/kernel/crypto/$mod_generic.ko
# c) /lib/modules/$VERSION/kernel/crypto/$mod.ko
#
# and (currently ignored):
#
# d) /lib/modules/$VERSION/kernel/drivers/crypto/$specific-$mod.ko
for file in $(find "$MODULESDIR/kernel/arch/" -name "$mod-*.ko" 2>/dev/null); do
altmod="${file##*/}"
altmod="${altmod%.ko}"
manual_add_modules "$altmod"
found="yes"
done
for file in $(find "$MODULESDIR/kernel/crypto/" -name "${mod}_generic.ko" 2>/dev/null); do
altmod="${file##*/}"
altmod="${altmod%.ko}"
manual_add_modules "$altmod"
found="yes"
genericfound="yes"
done
if [ -z "$genericfound" ]; then
for file in $(find "$MODULESDIR/kernel/crypto/" -name "${mod}.ko" 2>/dev/null); do
altmod="${file##*/}"
altmod="${altmod%.ko}"
manual_add_modules "$altmod"
found="yes"
done
fi
if [ -z "$found" ]; then
return 1
fi
return 0
}
#
# Begin real processing
#
setup="no"
rootdevs=""
usrdevs=""
resumedevs=""
# Load the hook's config
if [ -f "/etc/cryptsetup-initramfs/conf-hook" ]; then
. /etc/cryptsetup-initramfs/conf-hook
fi
# Include cryptsetup modules, regardless of _this_ machine configuration
if [ -n "$CRYPTSETUP" ] && [ "$CRYPTSETUP" != "n" ]; then
setup="yes"
fi
if [ "$KEYFILE_PATTERN" ]; then
setup="yes"
case "${UMASK:-$(umask)}" in
0[0-7]77) ;;
*) echo "WARNING: permissive UMASK (${UMASK:-$(umask)})." \
"Private key material inside the initrd might be left unprotected." >&2
;;
esac
fi
# Find the root and resume device(s)
if [ -r /etc/crypttab ]; then
rootdevs=$(get_fs_devices /)
if [ -z "$rootdevs" ]; then
echo "cryptsetup: WARNING: could not determine root device from /etc/fstab" >&2
fi
usrdevs=$(get_fs_devices /usr)
resumedevs=$(get_resume_devices)
initramfsdevs=$(get_initramfs_devices)
fi
# Load the config opts and modules for each device
for dev in $rootdevs $usrdevs $resumedevs $initramfsdevs; do
if ! modules=$(add_device "$dev"); then
echo "cryptsetup: FAILURE: could not determine configuration for $dev" >&2
continue
fi
if [ -n "$modules" ]; then
setup="yes"
fi
if [ "$setup" = "no" ]; then
continue
fi
if [ "$MODULES" = "most" ]; then
archcrypto="$(find "$MODULESDIR/kernel/arch" -type d -name "crypto" 2>/dev/null)"
if [ -n "$archcrypto" ]; then
copy_modules_dir "${archcrypto##*${MODULESDIR}/}"
fi
copy_modules_dir "kernel/crypto"
else
for mod in $modules; do
add_crypto_modules $mod
done
fi
done
# With large initramfs, we always add a basic subset of modules
if [ "$MODULES" != "dep" ] && [ "$setup" = "yes" ]; then
for mod in aes cbc chainiv cryptomgr krng sha256 xts; do
add_crypto_modules $mod
done
fi
# See if we need to add the basic components
if [ "$setup" = "yes" ]; then
for mod in dm_mod dm_crypt; do
manual_add_modules $mod
done
copy_exec /sbin/cryptsetup
copy_exec /sbin/dmsetup
copy_exec /lib/cryptsetup/askpass
# libargon2 utilizes pthread_cancel
LIBC_DIR="$(ldd /sbin/cryptsetup | sed -nr 's#.* => (/lib.*)/libc\.so\.[0-9.-]+ \(0x[[:xdigit:]]+\)$#\1#p')"
find -L "$LIBC_DIR" -maxdepth 1 -name 'libgcc_s.*' -type f | while read so; do
copy_exec "$so"
done
# We need sed. Either via busybox or as standalone binary.
if [ "$BUSYBOX" = "n" ] || [ ! -e ${BUSYBOXDIR}/busybox ]; then
copy_exec /bin/sed
fi
fi
exit 0
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