From: Michael Tremer <michael.tremer@ipfire.org>
Date: Sat, 8 May 2021 12:43:02 +0000 (+0000)
Subject: Mount image as loop device in test mode
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c96be18e29cfed4662f1e7f1eb8af903935ed7b6;p=people%2Fms%2Fbricklayer.git

Mount image as loop device in test mode

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>
---

diff --git a/src/python/disk.py b/src/python/disk.py
index 714ff09..a239b40 100644
--- a/src/python/disk.py
+++ b/src/python/disk.py
@@ -75,13 +75,28 @@ class Disks(object):
 		"""
 		path = util.create_sparse_file("disk", TEST_DISK_SIZE)
 
+		# Connect to a loop device
+		loop_device = self._losetup(path)
+
 		# Open the file with parted
-		device = parted.Device(path)
+		device = parted.Device(loop_device)
 
 		# Create a Disk object
 		disk = Disk(self.bricklayer, device)
 		self.disks.append(disk)
 
+	def _losetup(self, path):
+		# Find a free loop device
+		device = self.bricklayer.command(["losetup", "-f"])
+
+		device = device.rstrip()
+
+		# Connect the image to the loop device
+		self.bricklayer.command(["losetup", device, path])
+
+		# Return the name of the loop device
+		return device
+
 	@property
 	def supported(self):
 		"""