[gnome-continuous-yocto/gnomeostree-3.28-rocko: 2149/8267] bitbake: cooker.py: Catch when stdout doesn't have a file descriptor

[Emmanuele Bassi <ebassi src gnome org>]

commit 355e4ec0b6ac20d5c66618e6df1db6064baceb57
Author: Mariano Lopez <mariano lopez linux intel com>
Date:   Tue Aug 23 07:06:11 2016 +0000

    bitbake: cooker.py: Catch when stdout doesn't have a file descriptor
    
    Currently, there is a check to remove the TOSTOP attribute from
    a tty to avoid hangs. It assumes that sys.stdout will have a
    file descriptor and this is not always true, some IO classes
    will throw exceptions when trying to get its file descriptor.
    
    This will add a check for such cases and avoid throwing an
    exception.
    
    [YOCTO #10162]
    
    (Bitbake rev: cb4f8f6efa28ef2b13bc738a0118b876baa15b3e)
    
    Signed-off-by: Mariano Lopez <mariano lopez linux intel com>
    Signed-off-by: Richard Purdie <richard purdie linuxfoundation org>

 bitbake/lib/bb/cooker.py |   21 ++++++++++++---------
 1 files changed, 12 insertions(+), 9 deletions(-)
---
diff --git a/bitbake/lib/bb/cooker.py b/bitbake/lib/bb/cooker.py
index d1ab4aa..b7d7a7e 100644
--- a/bitbake/lib/bb/cooker.py
+++ b/bitbake/lib/bb/cooker.py
@@ -30,7 +30,7 @@ import logging
 import multiprocessing
 import sre_constants
 import threading
-from io import StringIO
+from io import StringIO, UnsupportedOperation
 from contextlib import closing
 from functools import wraps
 from collections import defaultdict, namedtuple
@@ -230,14 +230,17 @@ class BBCooker:
             pass
 
         # TOSTOP must not be set or our children will hang when they output
-        fd = sys.stdout.fileno()
-        if os.isatty(fd):
-            import termios
-            tcattr = termios.tcgetattr(fd)
-            if tcattr[3] & termios.TOSTOP:
-                buildlog.info("The terminal had the TOSTOP bit set, clearing...")
-                tcattr[3] = tcattr[3] & ~termios.TOSTOP
-                termios.tcsetattr(fd, termios.TCSANOW, tcattr)
+        try:
+            fd = sys.stdout.fileno()
+            if os.isatty(fd):
+                import termios
+                tcattr = termios.tcgetattr(fd)
+                if tcattr[3] & termios.TOSTOP:
+                    buildlog.info("The terminal had the TOSTOP bit set, clearing...")
+                    tcattr[3] = tcattr[3] & ~termios.TOSTOP
+                    termios.tcsetattr(fd, termios.TCSANOW, tcattr)
+        except UnsupportedOperation:
+            pass
 
         self.command = bb.command.Command(self)
         self.state = state.initial