From: Daan De Meyer <daan.j.demeyer@gmail.com>
Date: Tue, 16 Dec 2025 08:13:55 +0000 (+0100)
Subject: sandbox: Don't make overlay an absolute path if tmpfs
X-Git-Tag: v26~7^2
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=398febd1460e18a64007a41e0d94f42e147ab6ee;p=thirdparty%2Fmkosi.git

sandbox: Don't make overlay an absolute path if tmpfs

Fixes #4039
---

diff --git a/mkosi/sandbox.py b/mkosi/sandbox.py
index 22829b90d..66e8538fc 100755
--- a/mkosi/sandbox.py
+++ b/mkosi/sandbox.py
@@ -1102,7 +1102,9 @@ def main(argv: list[str] = sys.argv[1:]) -> None:
         elif arg == "--overlay-lowerdir":
             lowerdirs.append(os.path.abspath(argv.pop()))
         elif arg == "--overlay-upperdir":
-            upperdir = os.path.abspath(argv.pop())
+            upperdir = argv.pop()
+            if upperdir != "tmpfs":
+                upperdir = os.path.abspath(upperdir)
         elif arg == "--overlay-workdir":
             workdir = os.path.abspath(argv.pop())
         elif arg == "--overlay":