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#!/bin/sh
#
# Simple partitioning shell script.
#
# Copyright 2013 Guilhem Moulin <guilhem@fripost.org>
#
# Licensed under the GNU GPL version 3 or higher.
set -ue
. /lib/fripost-partman/base.sh
# Wipe the disk
device=/dev/sda
fripost_wipe $device
db_get fripost/encrypt
encrypt=$RET
# Create a disk label
/sbin/parted -s $device mklabel gpt
log "Created disklabel GPT for device $device"
# Create a EFI partition if needed; otherwise, create a partition needed
# to put GRUB on GPT disklabels.
if [ -d /proc/efi -o -d /sys/firmware/efi ]; then
part_efi=$( fripost_mkpart $device efi 256M +boot )
else
fripost_mkpart $device bios_grub 8M +bios_grub
fi
db_set grub-installer/bootdev $device
db_fset grub-installer/bootdev seen true
# Create boot and system partitions
part_boot=$( fripost_mkpart $device boot 64M )
part_system=$( fripost_mkpart $device system 100% )
/sbin/parted -s $device align-check opt ${part_system#$device} \
|| fatal "$part_system is not aligned"
if [ $encrypt = true ]; then
# Encrypt the system partition. We choose the key length and digest
# depending on the architecture we're on; we use AES128 and SHA-256
# on 32-bits platforms, and AES256 and SHA-512 on 64-bits platforms.
arch=$(uname -m)
if [ "$arch" = x86_64 ]; then
keysize=256
hash=sha512
elif [ "$arch" = i386 -o "$arch" = i686 ]; then
keysize=128
hash=sha256
fi
# Note: XTS requires the key size to be doubled.
fripost_encrypt $part_system system_crypt \
--cipher aes-xts-plain64 --key-size $(( $keysize * 2 )) --hash $hash \
--iter-time 5000 --use-random
part_system=/dev/mapper/system_crypt
fi
# Ensure LVM2 is installed in the target chroot; create logical volumes
# for /, swap and /home.
apt-install lvm2 || true
vg=$(hostname)
pvcreate -ff -y $part_system
vgcreate $vg $part_system
lvcreate -L 5G -n root $vg
lvcreate -L 1G -n swap $vg
lvcreate -l 100%FREE -n home $vg
vgchange -ay $vg
# Format the partitions
fripost_mkfs ext2 $part_boot -E resize=512M -m1 -b 4096
fripost_mkfs ext4 /dev/$vg/root -b 4096
fripost_mkfs ext4 /dev/$vg/home -b 4096
mkswap /dev/$vg/swap
# Stuff the fstab and mount the devices in the target
fripost_fstab $part_boot /boot ext2 noatime
fripost_fstab /dev/$vg/root / ext4 noatime,errors=remount-ro
fripost_fstab /dev/$vg/swap none swap sw
fripost_fstab /dev/$vg/home /home ext4 noatime
fripost_mount_partitions
# TODO: EFI: format, add to fstab, how to populate?
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