From 5bcf39fd00a18e039b6cacca05ad02ba0044addc Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?J=C3=BCrg=20Billeter?= <j@bitron.ch>
Date: Mon, 20 Apr 2020 10:16:16 +0200
Subject: _casbaseddirectory.py: Fix temp file permissiosn in open_file()

This is required when buildbox-casd is running as separate user.
---
 src/buildstream/storage/_casbaseddirectory.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/buildstream/storage/_casbaseddirectory.py b/src/buildstream/storage/_casbaseddirectory.py
index b8b5ca09c..e33bdc3d7 100644
--- a/src/buildstream/storage/_casbaseddirectory.py
+++ b/src/buildstream/storage/_casbaseddirectory.py
@@ -754,6 +754,8 @@ class CasBasedDirectory(Directory):
                 raise FileExistsError("{} already exists in {}".format(path[-1], str(subdir)))
 
             with utils._tempnamedfile(mode, encoding=encoding, dir=self.cas_cache.tmpdir) as f:
+                # Make sure the temporary file is readable by buildbox-casd
+                os.chmod(f.name, stat.S_IRUSR | stat.S_IWUSR | stat.S_IRGRP | stat.S_IROTH)
                 yield f
                 # Import written temporary file into CAS
                 f.flush()
-- 
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