[gnome-continuous-yocto/gnomeostree-3.28-rocko: 7061/8267] bitbake: daemonize: Ensure child process exits safely

[Emmanuele Bassi <ebassi src gnome org>]

commit 8625f83e383d3d30c1cb44d6293cc302728692cd
Author: Richard Purdie <richard purdie linuxfoundation org>
Date:   Mon Jul 31 11:30:56 2017 +0100

    bitbake: daemonize: Ensure child process exits safely
    
    When we create the child, if an exception occurred it was transfering
    back into the parent context. We don't want to do that us use a try/finally
    to ensure we exit.
    
    We need to ensure a traceback is printed and any queued UI messages which
    may not have made it to the client UI at this point.
    
    (Bitbake rev: dec1d2c26f6cb3ffeb44beaab0129cd531a6d08b)
    
    Signed-off-by: Richard Purdie <richard purdie linuxfoundation org>

 bitbake/lib/bb/daemonize.py |   11 ++++++++---
 1 files changed, 8 insertions(+), 3 deletions(-)
---
diff --git a/bitbake/lib/bb/daemonize.py b/bitbake/lib/bb/daemonize.py
index 8380828..a4664ad 100644
--- a/bitbake/lib/bb/daemonize.py
+++ b/bitbake/lib/bb/daemonize.py
@@ -30,6 +30,7 @@ __version__ = "0.2"
 import os                    # Miscellaneous OS interfaces.
 import sys                   # System-specific parameters and functions.
 import io
+import traceback
 
 # Default daemon parameters.
 # File mode creation mask of the daemon.
@@ -192,6 +193,10 @@ def createDaemon(function, logfile):
         sys.stdout = open(logfile, 'a+')
         sys.stderr = sys.stdout
 
-    function()
-
-    os._exit(0)
+    try:
+        function()
+    except Exception as e:
+        traceback.print_exc()
+        bb.event.print_ui_queue()
+    finally:
+        os._exit(0)