Update encryption option further

linuxmint-postsetup.sh

@@ -50,11 +50,14 @@ function create_subvolumes() {
 	subvols+=("${!SUBVOLS_DEFAULT[@]}")
 
 	if [[ "$ENCRYPTION" ]]; then
-        ${cmd} cryptsetup luksOpen "$RootPart" luksvol
+		${cmd} mount -o noatime,space_cache=v2,ssd "/dev/mapper/$ENC_VOL" /mnt
-		${cmd} mount -o noatime,space_cache=v2,ssd "/dev/mapper/luksvol" /mnt
 	else
 		${cmd} mount -o noatime,space_cache=v2,ssd "$RootPart" /mnt
 	fi
+    if [[ "$?" -ne 0 ]]; then
+        echo "FATAL: Could not mount /mnt"
+        exit 100
+    fi
 
 	if [[ "$BootPart" == "@boot" ]]; then
         ${cmd} btrfs subvolume create /mnt/@boot
@@ -99,7 +102,7 @@ function unmount_target() {
     ${cmd} umount /target
 
     if [[ "$ENCRYPTION" ]]; then
-        ${cmd} cryptsetup luksClose luksvol
+        ${cmd} cryptsetup luksClose "$ENC_VOL"
     fi
 }
 
@@ -121,10 +124,14 @@ function prepare_target() {
 
 	rootmount="$RootPart"
 	if [[ "$ENCRYPTION" ]]; then
-        rootmount="/dev/mapper/luksvol"
+        rootmount="/dev/mapper/$ENC_VOL"
 	fi
 
 	${cmd} mount -o noatime,space_cache=v2,ssd,subvol=@ "$rootmount" /target
+    if [[ "$?" -ne 0 ]]; then
+        echo "FATAL: Could not mount /target"
+        exit 101
+    fi
 
 	for subvol in "${!SUBVOLS_DEFAULT[@]}"
 	do
@@ -139,8 +146,16 @@ function prepare_target() {
 	else
 		${cmd} mount "$BootPart" /target/boot
 	fi
+    if [[ "$?" -ne 0 ]]; then
+        echo "FATAL: Could not mount /target/boot"
+        exit 102
+    fi
 
     ${cmd} mount -o noatime,space_cache=v2,ssd,subvol=@home "$rootmount" /target/home
+    if [[ "$?" -ne 0 ]]; then
+        echo "FATAL: Could not mount /target/home"
+        exit 103
+    fi
 
 	for subvol in "${!SUBVOLS_DEFAULT[@]}"
 	do
@@ -151,12 +166,20 @@ function prepare_target() {
 	    ${cmd} mkdir -p /target/boot/efi
     fi
 	${cmd} mount "$EFIPart" /target/boot/efi
+    if [[ "$?" -ne 0 ]]; then
+        echo "FATAL: Could not mount /target/boot/efi"
+        exit 104
+    fi
 
 	if [[ "$SWAP" ]]; then
         if [[ ! -d "/target/swap" ]]; then
 		    ${cmd} mkdir -p /target/swap
         fi
 		${cmd} mount -o noatime,ssd,subvol=@swap "$rootmount" /target/swap
+        if [[ "$?" -ne 0 ]]; then
+            echo "FATAL: Could not mount /target/swap"
+            exit 105
+        fi
 		${cmd} btrfs filesystem mkswapfile --size "$(get_hibernate_size)g" --uuid clear /target/swap/hibernate.swp
 	fi
 
@@ -184,9 +207,9 @@ function prepare_target() {
 		${cmd} sed -i "/^GRUB_CMDLINE_LINUX_DEFAULT=/ s/\(\"[^\"]*\)$/ resume=${SwapUUID} resume_offset=${SwapOffset}&/" /target/etc/default/grub
 	fi
 
-    if [[ "$ENCRYPTION" ]]; then
+    #if [[ "$ENCRYPTION" ]]; then
-
+    #
-    fi
+    #fi
 }
 
 function expert_step() {
@@ -309,7 +332,7 @@ function install_cleanup() {
 	${cmd} umount /target
 
 	if [[ "$ENCRYPTION" ]]; then
-		${cmd} cryptsetup luksClose luksvol
+		${cmd} cryptsetup luksClose "$ENC_VOL"
 	fi
 
 	${cmd} dd if=/dev/zero of="${RootPart}" bs=1024 count=10
@@ -330,6 +353,7 @@ while [[ $# -gt 0 ]]; do
 			;;
         -e|--encryption)
             ENCRYPTION=true
+            ENC_VOL="$2"
             shift
             ;;
 		-s|--swap)
@@ -366,9 +390,19 @@ if [[ -z "$RootPart" || -z "$BootPart" || -z "$EFIPart" ]]; then
 	exit 3
 else
 	if [[ "$ENCRYPTION" && "$BootPart" == "@boot" ]]; then
+        if [[ -z "$ENC_VOL" ]]; then
+            echo "Encryption volume needs to be set. Reliably determining this is"
+            echo "best done by human eyes. To find your current volume, you can"
+            echo "run:"
+            echo "  dmsetup ls --target crypt"
+            echo "If it's not active for whatever reason, you can open it with:"
+            echo "  cryptsetup luksOpen "$RootPart" <volume_name>"
+            exit 4
+        elif [[ "$BootPart" == "@boot" ]]; then
         	echo "While encryption is enabled, using @boot subvolume will cause issues."
 		    echo "Please prepare and set boot volume for /boot while using encryption."
-		exit 4
+		    exit 5
+        fi
 	fi
 
 	case "$INSTALL_MODE" in