Added functions to auto-detect filesystems inside encrypted partitions (given a password)

archinstall/lib/disk.py

@@ -188,6 +188,11 @@ class Partition():
 					return f"/dev/{parent}"
 			raise DiskError(f'Could not find appropriate parent for encrypted partition {self}')
 
+	def detect_inner_filesystem(self, password):
+		from .luks import luks2
+		with luks2(self, 'luksloop', password, auto_unmount=True) as unlocked_device:
+			return unlocked_device.filesystem
+
 	def has_content(self):
 		temporary_mountpoint = '/tmp/'+hashlib.md5(bytes(f"{time.time()}", 'UTF-8')+os.urandom(12)).hexdigest()
 		temporary_path = pathlib.Path(temporary_mountpoint)

archinstall/lib/luks.py

@@ -6,13 +6,14 @@ from .output import log, LOG_LEVELS
 from .storage import storage
 
 class luks2():
-	def __init__(self, partition, mountpoint, password, key_file=None, *args, **kwargs):
+	def __init__(self, partition, mountpoint, password, key_file=None, auto_unmount=False, *args, **kwargs):
 		self.password = password
 		self.partition = partition
 		self.mountpoint = mountpoint
 		self.args = args
 		self.kwargs = kwargs
 		self.key_file = key_file
+		self.auto_unmount = auto_unmount
 		self.filesystem = 'crypto_LUKS'
 
 	def __enter__(self):
@@ -32,6 +33,9 @@ class luks2():
 
 	def __exit__(self, *args, **kwargs):
 		# TODO: https://stackoverflow.com/questions/28157929/how-to-safely-handle-an-exception-inside-a-context-manager
+		if self.auto_unmount:
+			self.close()
+
 		if len(args) >= 2 and args[1]:
 			raise args[1]
 		return True
@@ -73,11 +77,12 @@ class luks2():
 		:param mountpoint: The name without absolute path, for instance "luksdev" will point to /dev/mapper/luksdev
 		:type mountpoint: str
 		"""
+		from .disk import get_filesystem_type
 		if '/' in mountpoint:
 			os.path.basename(mountpoint)  # TODO: Raise exception instead?
 		sys_command(f'/usr/bin/cryptsetup open {partition.path} {mountpoint} --key-file {os.path.abspath(key_file)} --type luks2')
 		if os.path.islink(f'/dev/mapper/{mountpoint}'):
-			return Partition(f'/dev/mapper/{mountpoint}', encrypted=True)
+			return Partition(f'/dev/mapper/{mountpoint}', encrypted=True, filesystem=get_filesystem_type(f'/dev/mapper/{mountpoint}'))
 
 	def close(self, mountpoint):
 		sys_command(f'cryptsetup close /dev/mapper/{mountpoint}')