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Detect encrypted volumes using blkid instead of another partition

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This commit is contained in:
tslil clingman 2019-10-12 18:39:17 -04:00
parent 677742a76b
commit c57507aff4
6 changed files with 15 additions and 47 deletions
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17
resources/BuildResources/initramfs-init
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@ -21,8 +21,7 @@ echo In PrawnOS Init
#add this to start shell at desired point
rescue_shell() {
[ "{$1}" != "debug" ] && echo "Something went wrong. Dropping to a shell." > /dev/tty1
[ "{$1}" == "debug" ] && echo "Debug flag detected, entering debug shell" > /dev/tty1
echo "Something went wrong. Dropping to a shell." > /dev/tty1
exec setsid /bin/sh -c 'exec /bin/sh </dev/tty1 >/dev/tty1 2>&1'
}
@ -65,28 +64,20 @@ echo ${ROOT_DEV} > /dev/tty1
# the next boot stage
CMDLINE='cat /proc/cmdline'
[ -d "/boot" ] || mkdir -p /boot
mount ${ROOT_DEV}2 /boot
#Debugging can be facilitated by creating /boot/debug
[ -f "/boot/debug" ] && rescue_shell debug
if [ -f "/boot/root_encryption" ]
if [ -n "$(blkid ${ROOT_DEV}2 | grep crypto_LUKS)" ]
then
#decrypt and mount the root filesystem
echo "Opening encrypted root partition, this will take 30s..."
cryptsetup --tries 5 luksOpen ${ROOT_DEV}3 luksroot || rescue_shell debug
cryptsetup --tries 5 luksOpen ${ROOT_DEV}2 luksroot || rescue_shell
mount /dev/mapper/luksroot /newroot
else
# mount the unencrypted root filesystem
[ -d "/newroot" ] || mkdir -p /newroot
mount ${ROOT_DEV}3 /newroot
mount ${ROOT_DEV}2 /newroot
fi
umount /sys
umount /proc
#swith to the new rootfs
exec switch_root /newroot /sbin/init ${CMDLINE}

3
resources/InstallResources/mmc.partmap
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@ -6,5 +6,4 @@ first-lba: 34
last-lba: 30785502
/dev/mmcblk2p1 : start= 20480, size= 65536, type=FE3A2A5D-4F32-41A7-B725-ACCC3285A309, uuid=89B31CDB-1147-5241-8271-C1ADBB9BBB44, name="Kernel", attrs="GUID:49,51,52,54,56"
/dev/mmcblk2p2 : start= 86016, size= 976562, name="Boot"
/dev/mmcblk2p3 : start= 1062578, size= 29722924, type=EBD0A0A2-B9E5-4433-87C0-68B6B72699C7, uuid=63DB8E49-63C4-984E-90A0-8AC3222C4771, name="Root"
/dev/mmcblk2p2 : start= 86016, size= 30699486, type=EBD0A0A2-B9E5-4433-87C0-68B6B72699C7, uuid=63DB8E49-63C4-984E-90A0-8AC3222C4771, name="Root"

4
resources/InstallResources/mmc_type2.partmap
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@ -1,4 +1,3 @@
label: gpt
label-id: EBA5A923-2F33-7C4E-AC9A-1555FD600D19
device: /dev/mmcblk2
@ -7,5 +6,4 @@ first-lba: 34
last-lba: 30777310
/dev/mmcblk2p1 : start= 20480, size= 65536, type=FE3A2A5D-4F32-41A7-B725-ACCC3285A309, uuid=89B31CDB-1147-5241-8271-C1ADBB9BBB44, name="Kernel", attrs="GUID:49,51,52,54,56"
/dev/mmcblk2p2 : start= 86016, size= 976562, name="Boot"
/dev/mmcblk2p3 : start= 1062578, size= 29714732, type=EBD0A0A2-B9E5-4433-87C0-68B6B72699C7, uuid=63DB8E49-63C4-984E-90A0-8AC3222C4771, name="Root"
/dev/mmcblk2p3 : start= 86016, size= 30699486, type=EBD0A0A2-B9E5-4433-87C0-68B6B72699C7, uuid=63DB8E49-63C4-984E-90A0-8AC3222C4771, name="Root"

13
scripts/InstallScripts/InstallToInternal.sh
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@ -36,7 +36,6 @@ then
dmesg -D
umount /dev/mmcblk2p1 || /bin/true
umount /dev/mmcblk2p2 || /bin/true
umount /dev/mmcblk2p3 || /bin/true
echo Writing partition map
DISK_SZ="$(blockdev --getsz /dev/mmcblk2)"
@ -73,15 +72,9 @@ then
dd if=/dev/zero of=/dev/mmcblk2p1 bs=512 count=65536
dd if="$BOOT_DEVICE"1 of=/dev/mmcblk2p1
BOOT_DEV_NAME=mmcblk2p2
ROOT_DEV_NAME=mmcblk2p3
ROOT_DEV_NAME=mmcblk2p2
CRYPTO=false
#ready /boot
mkfs.ext4 -F -b 1024 /dev/$BOOT_DEV_NAME
mkdir -p /mnt/boot
mount /dev/$BOOT_DEV_NAME /mnt/boot
#Handle full disk encryption
echo "Would you like to setup full disk encrytion using LUKs/DmCrypt?"
select yn in "Yes" "No"
@ -96,8 +89,6 @@ then
echo "Now unlock the newly created encrypted root partition so we can mount it and install the filesystem"
cryptsetup luksOpen /dev/$ROOT_DEV_NAME luksroot || exit 1
ROOT_DEV_NAME=mapper/luksroot
#set the root encryption flag
touch /mnt/boot/root_encryption
break
;;
No,*|*,No )
@ -120,7 +111,7 @@ then
then
echo "/dev/mapper/luksroot / ext4 defaults,noatime 0 1" > /mnt/mmc/etc/fstab
else
echo "/dev/mmcblk2p3 / ext4 defaults,noatime 0 1" > /mnt/mmc/etc/fstab
echo "/dev/mmcblk2p2 / ext4 defaults,noatime 0 1" > /mnt/mmc/etc/fstab
fi
umount /dev/$ROOT_DEV_NAME
echo Running fsck

15
scripts/buildFilesystem.sh
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@ -67,27 +67,18 @@ create_image() {
cgpt create $1
kernel_start=8192
kernel_size=65536
boot_size=409600 # 200 MB
cgpt add -i 1 -t kernel -b $kernel_start -s $kernel_size -l Kernel -S 1 -T 5 -P 10 $1
#create the initramfs partiton, aka /boot
boot_start=$(($kernel_start + $kernel_size))
cgpt add -i 2 -t data -b $boot_start -s $boot_size -l Boot $1
#Now the main filesystem
root_start=$(($boot_start + $boot_size))
root_start=$(($kernel_start + $kernel_size))
end=`cgpt show $1 | grep 'Sec GPT table' | awk '{print $1}'`
root_size=$(($end - $root_start))
cgpt add -i 3 -t data -b $root_start -s $root_size -l Root $1
# $size is in 512 byte blocks while ext4 uses a block size of 1024 bytes
losetup -P $2 $1
mkfs.ext4 -F -b 1024 -m 0 ${2}p2 $(($boot_size / 2))
mkfs.ext4 -F -b 1024 -m 0 ${2}p3 $(($root_size / 2))
mkfs.ext4 -F -b 1024 -m 0 ${2}p2 $(($root_size / 2))
# mount the / partition
mount -o noatime ${2}p3 $5
# mount the /boot partiton
mkdir -p $5/boot
mount -o noatime ${2}p2 $5/boot
mount -o noatime ${2}p2 $5
}
# use buster if no suite is specified

4
scripts/injectKernelIntoFS.sh
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@ -54,9 +54,7 @@ trap cleanup INT TERM EXIT
losetup -P $outdev $2
#mount the root filesystem
mount -o noatime ${outdev}p3 $outmnt
#mount the initramfs partition
# mount -o noatime ${outdev}p2 $outmnt/boot
mount -o noatime ${outdev}p2 $outmnt
# put the kernel in the kernel partition, modules in /lib/modules and AR9271
# firmware in /lib/firmware