---
I had prepared the updates following v5 several months ago but
apparently never sent it in.
setup-disk.in | 115 ++++++++++++++++++++++++++++++++++++++++----------
1 file changed, 93 insertions(+), 22 deletions(-)
diff --git a/setup-disk.in b/setup-disk.in
index 7a3a2a3..9390a69 100644
--- a/setup-disk.in
+++ b/setup-disk.in
@@ -79,6 +79,26 @@ enumerate_fstab() {
done
}
+# given an fstab on stdin, determine if any of the mountpoints are encrypted
+crypt_required() {
+ while read devname mountpoint fstype mntops freq passno; do
+ if [ -z "$devname" ] || [ "${devname###}" != "$devname" ]; then
+ continue
+ fi
+ uuid="${devname##UUID=}"
+ if [ "$uuid" != "$devname" ]; then
+ devname="$(blkid --uuid "$uuid")"
+ fi
+ mapname="${devname##/dev/mapper/}"
+ if [ "$mapname" != "$devname" ]; then
+ if cryptsetup status "$mapname" >&1 >/dev/null; then
+ return 0
+ fi
+ fi
+ done
+ return 1
+}
+
is_vmware() {
grep -q VMware /proc/scsi/scsi 2>/dev/null \
|| grep -q VMware /proc/ide/hd*/model 2>/dev/null
@@ -342,7 +362,7 @@ setup_syslinux() {
install_mounted_root() {
local mnt="$1"
shift 1
- local disks="${@}" mnt_boot= boot_fs= root_fs=
+ local disks="${@}" mnt_boot= boot_fs= root_fs= use_crypt=
local initfs_features="ata base ide scsi usb virtio"
local pvs= dev= rootdev= bootdev= extlinux_raidopt= root= modules=
local kernel_opts="quiet"
@@ -401,7 +421,6 @@ install_mounted_root() {
esac
done
-
if [ -n "$VERBOSE" ]; then
echo "Root device: $rootdev"
echo "Root filesystem: $root_fs"
@@ -424,6 +443,27 @@ install_mounted_root() {
# we should not try start modloop on sys install
rm -f "$mnt"/etc/runlevels/*/modloop
+ # generate the fstab
+ if [ -f "$mnt"/etc/fstab ]; then
+ mv "$mnt"/etc/fstab "$mnt"/etc/fstab.old
+ fi
+ enumerate_fstab "$mnt" >> "$mnt"/etc/fstab
+ if [ -n "$SWAP_DEVICES" ]; then
+ local swap_dev
+ for swap_dev in $SWAP_DEVICES; do
+ echo -e "$(uuid_or_device ${swap_dev})\tswap\tswap\tdefaults\t0 0" \
+ >> "$mnt"/etc/fstab
+ done
+ fi
+ cat >>"$mnt"/etc/fstab <<-__EOF__
+ /dev/cdrom /media/cdrom iso9660 noauto,ro 0 0
+ /dev/usbdisk /media/usb vfat noauto 0 0
+ __EOF__
+
+ if crypt_required <"$mnt"/etc/fstab; then
+ use_crypt=1
+ fi
+
# generate mkinitfs.conf
mkdir -p "$mnt"/etc/mkinitfs/features.d
echo "features=\"$initfs_features\"" > "$mnt"/etc/mkinitfs/mkinitfs.conf
@@ -441,24 +481,15 @@ install_mounted_root() {
if [ -n "$(get_bootopt nomodeset)" ]; then
kernel_opts="nomodeset $kernel_opts"
fi
+ if [ "$use_crypt" ] && cryptsetup status "$rootdev" 2>&1 >/dev/null; then
+ # Boot to encrypted root
+ initfs_features="${initfs_features% cryptsetup} cryptsetup"
+ root=$(cryptsetup status "$rootdev" | awk '/device:/ { print $2 }')
+ kernel_opts="cryptroot=$root cryptdm=root"
+ root=/dev/mapper/root
+ fi
modules="sd-mod,usb-storage,${root_fs}${raidmod}"
- # generate the fstab
- if [ -f "$mnt"/etc/fstab ]; then
- mv "$mnt"/etc/fstab "$mnt"/etc/fstab.old
- fi
- enumerate_fstab "$mnt" >> "$mnt"/etc/fstab
- if [ -n "$SWAP_DEVICES" ]; then
- local swap_dev
- for swap_dev in $SWAP_DEVICES; do
- echo -e "$(uuid_or_device ${swap_dev})\tswap\tswap\tdefaults\t0 0" \
- >> "$mnt"/etc/fstab
- done
- fi
- cat >>"$mnt"/etc/fstab <<-__EOF__
- /dev/cdrom /media/cdrom iso9660 noauto,ro 0 0
- /dev/usbdisk /media/usb vfat noauto 0 0
- __EOF__
# remove the installed db in case its there so we force re-install
rm -f "$mnt"/var/lib/apk/installed "$mnt"/lib/apk/db/installed
echo "Installing system on $rootdev:"
@@ -502,6 +533,10 @@ unmount_partitions() {
# unmount the partitions
umount $(awk '{print $2}' /proc/mounts | egrep "^$mnt(/|\$)" | sort -r)
+
+ if [ "$USE_CRYPT" ]; then
+ cryptsetup close /dev/mapper/root
+ fi
}
# figure out decent default swap size in mega bytes
@@ -993,6 +1028,18 @@ native_disk_install_lvm() {
setup_root $root_dev $BOOT_DEV
}
+setup_crypt() {
+ local dev="$1" local dmname="$2"
+ mkdir -p /run/cryptsetup
+ echo "Preparing root partition for encryption." >&2
+ echo "You will be prompted for your password at boot." >&2
+ echo "If you forget your password, your data will be lost." >&2
+ cryptsetup luksFormat --type luks2 "$dev" >&2
+ echo "Enter password again to unlock disk for installation." >&2
+ cryptsetup open "$dev" "$dmname" >&2
+ echo "/dev/mapper/$dmname"
+}
+
native_disk_install() {
local prep_part_type=$(partition_id prep)
local root_part_type=$(partition_id linux)
@@ -1064,6 +1111,10 @@ native_disk_install() {
root_dev=$(find_nth_non_boot_parts $index "$root_part_type" $@)
fi
+ if [ "$USE_CRYPT" ]; then
+ root_dev=$(setup_crypt $root_dev root)
+ fi
+
[ $SWAP_SIZE -gt 0 ] && setup_swap_dev $swap_dev
setup_root $root_dev $BOOT_DEV $@
}
@@ -1084,7 +1135,7 @@ diskselect_help() {
diskmode_help() {
cat <<-__EOF__
- You can select between 'sys', 'data', 'lvm', 'lvmsys' or 'lvmdata'.
+ You can select between 'sys', 'cryptsys', 'data', 'lvm', 'lvmsys' or 'lvmdata'.
sys:
This mode is a traditional disk install. The following partitions will be
@@ -1092,6 +1143,12 @@ diskmode_help() {
This mode may be used for development boxes, desktops, virtual servers, etc.
+ cryptsys:
+ This mode is equivalent to sys, except that the root filesystem will be
+ encrypted with cryptsetup. You will be prompted to enter a decryption
+ password, and will need to use this password to boot up the operating
+ system after installation.
+
data:
This mode uses your disk(s) for data storage, not for the operating system.
The system itself will run from tmpfs (RAM).
@@ -1142,7 +1199,7 @@ ask_disk() {
usage() {
cat <<-__EOF__
- usage: setup-disk [-hLqrv] [-k kernelflavor] [-m MODE] [-o apkovl] [-s SWAPSIZE]
+ usage: setup-disk [-hLqrve] [-k kernelflavor] [-m MODE] [-o apkovl] [-s SWAPSIZE]
[MOUNTPOINT | DISKDEV...]
Install alpine on harddisk.
@@ -1156,6 +1213,7 @@ usage() {
options:
-h Show this help
+ -e Encrypt disk
-m Use disk for MODE without asking, where MODE is either 'data' or 'sys'
-o Restore system from given apkovl file
-k Use kernelflavor instead of $KERNEL_FLAVOR
@@ -1192,11 +1250,13 @@ case $kver in
*) KERNEL_FLAVOR=vanilla;;
esac
+USE_CRYPT=
DISK_MODE=
USE_LVM=
# Parse args
-while getopts "hk:Lm:o:qrs:v" opt; do
+while getopts "hek:Lm:o:qrs:v" opt; do
case $opt in
+ e) USE_CRYPT=1;;
m) DISK_MODE="$OPTARG";;
k) KERNEL_FLAVOR="$OPTARG";;
L) USE_LVM="_lvm";;
@@ -1221,6 +1281,12 @@ fi
reset_var
swapoff -a
+if [ $USE_CRYPT -eq 1 ] && [ -n "$USE_LVM" ]; then
+ echo "cryptsys and lvm are currently mutually incompatible."
+ echo "Please run $0 again with only one of these options selected."
+ exit 1
+fi
+
# stop all volume groups in use
vgchange --ignorelockingfailure -a n >/dev/null 2>&1
@@ -1274,10 +1340,15 @@ if [ -n "$diskdevs" ] && [ -z "$DISK_MODE" ]; then
echo "The following $disk_is_or_disks_are selected${USE_LVM:+ (with LVM)}:"
show_disk_info $diskdevs
_lvm=${USE_LVM:-", 'lvm'"}
- echon "How would you like to use $it_them? ('sys', 'data'${_lvm#_lvm} or '?' for help) [?] "
+ echon "How would you like to use $it_them? ('sys', 'cryptsys', 'data'${_lvm#_lvm} or '?' for help) [?] "
default_read answer '?'
case "$answer" in
'?') diskmode_help;;
+ cryptsys)
+ answer=sys
+ USE_CRYPT=1
+ break
+ ;;
sys|data) break;;
lvm) USE_LVM="_lvm" ;;
nolvm) USE_LVM="";;
--
2.28.0