[cip-dev][isar-cip-core][RFC 3/8] initramfs-crypt-hook: move the mounting of encrypted disks in a seperate function

[Quirin Gylstorff <Quirin.Gylstorff@siemens.com>]

From: Quirin Gylstorff <quirin.gylstorff@siemens.com>

This increase the maintainability and avoids missing checks.

Signed-off-by: Quirin Gylstorff <quirin.gylstorff@siemens.com>
---
 .../files/encrypt_partition.clevis.script     | 20 +++++++++++--------
 .../files/encrypt_partition.systemd.script    | 20 +++++++++++--------
 2 files changed, 24 insertions(+), 16 deletions(-)

diff --git a/recipes-initramfs/initramfs-crypt-hook/files/encrypt_partition.clevis.script b/recipes-initramfs/initramfs-crypt-hook/files/encrypt_partition.clevis.script
index 4e76c44..0f82c1a 100644
--- a/recipes-initramfs/initramfs-crypt-hook/files/encrypt_partition.clevis.script
+++ b/recipes-initramfs/initramfs-crypt-hook/files/encrypt_partition.clevis.script
@@ -92,6 +92,16 @@ reencrypt_existing_partition() {
 	fi
 }
 
+mount_partition() {
+	partition_dev_path=$1
+	partition_mountpoint=$2
+	echo "mount device: '$partition' to '$partition_mountpoint'"
+	if ! mount -t "$(get_fstype "${partition_dev_path}")" "${partition_dev_path}" \
+		 "${partition_mountpoint}"; then
+		panic "Can't mount encrypted partition '${partition_dev_path}'!"
+	fi
+}
+
 if [ ! -e "$tpm_device" ]; then
 	panic "tpm device '$tpm_device' does not exists - cannot create a encrypted device!"
 fi
@@ -114,10 +124,7 @@ for partition_set in $partition_sets; do
 	if /usr/sbin/cryptsetup luksDump --batch-mode "$partition" \
 			| grep -q "clevis"; then
 		open_tpm2_partition "$part_device"
-		if ! mount -t "$(get_fstype "${decrypted_part}")" "${decrypted_part}" \
-			 "${rootmnt}${partition_mountpoint}"; then
-			panic "Can't mount encrypted partition '${decrypted_part}'!"
-		fi
+		mount_partition "$decrypted_part" "${rootmnt}""$partition_mountpoint"
 		continue
 	fi
 
@@ -150,10 +157,7 @@ for partition_set in $partition_sets; do
 		 ;;
 	esac
 
-	if ! mount -t "$(get_fstype "${decrypted_part}")" "${decrypted_part}" \
-		 "${rootmnt}${partition_mountpoint}"; then
-		panic "Can't mount encrypted partition '${decrypted_part}'!"
-	fi
+	mount_partition "$decrypted_part" "${rootmnt}""$partition_mountpoint"
 
 	# delete initial key
 	# afterwards no new keys can be enrolled
diff --git a/recipes-initramfs/initramfs-crypt-hook/files/encrypt_partition.systemd.script b/recipes-initramfs/initramfs-crypt-hook/files/encrypt_partition.systemd.script
index f97a461..6c6d22e 100644
--- a/recipes-initramfs/initramfs-crypt-hook/files/encrypt_partition.systemd.script
+++ b/recipes-initramfs/initramfs-crypt-hook/files/encrypt_partition.systemd.script
@@ -102,6 +102,16 @@ reencrypt_existing_partition() {
 	fi
 }
 
+mount_partition() {
+	partition_dev_path=$1
+	partition_mountpoint=$2
+	echo "mount device: '$partition' to '$partition_mountpoint'"
+	if ! mount -t "$(get_fstype "${partition_dev_path}")" "${partition_dev_path}" \
+		 "${partition_mountpoint}"; then
+		panic "Can't mount encrypted partition '${partition_dev_path}'!"
+	fi
+}
+
 if [ ! -e "$tpm_device" ]; then
 	panic "tpm device '$tpm_device' does not exists - cannot create a encrypted device!"
 fi
@@ -118,11 +128,8 @@ for partition_set in $partition_sets; do
 	# check if partition is already encrypted with systemd-tpm2
 	if /usr/sbin/cryptsetup luksDump --batch-mode "$partition" \
 			| grep -q "systemd-tpm2"; then
-		if ! mount -t "$(get_fstype "${decrypted_part}")" "${decrypted_part}" \
-			 "${rootmnt}${partition_mountpoint}"; then
-			panic "Can't mount encrypted partition '${decrypted_part}'!"
-		fi
 		open_tpm2_partition "$part_device"
+		mount_partition "$decrypted_part" "${rootmnt}""$partition_mountpoint"
 		continue
 	fi
 
@@ -155,10 +162,7 @@ for partition_set in $partition_sets; do
 		 ;;
 	esac
 
-	if ! mount -t "$(get_fstype "${decrypted_part}")" "${decrypted_part}" \
-		 "${rootmnt}${partition_mountpoint}"; then
-		panic "Can't mount encrypted partition '${decrypted_part}'!"
-	fi
+	mount_partition "$decrypted_part" "${rootmnt}""$partition_mountpoint"
 
 	# delete initial key
 	# afterwards no new keys can be enrolled
-- 
2.43.0