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From 86061629f4a179e740a17e53dd2c98ab47af2fe2 Mon Sep 17 00:00:00 2001
From: Alexander Kanavin <alex@linutronix.de>
Date: Thu, 16 Sep 2021 16:35:37 +0200
Subject: [PATCH] Lib/pty.py: handle stdin I/O errors same way as master I/O
errors
reading stdin can throw the same I/O errors as reading from master fd does,
e.g. when running under Yocto's test harness:
======================================================================
ERROR: test_spawn_doesnt_hang (test.test_pty.PtyTest)
----------------------------------------------------------------------
Traceback (most recent call last):
File "/usr/lib/python3.10/test/test_pty.py", line 316, in test_spawn_doesnt_hang
pty.spawn([sys.executable, '-c', 'print("hi there")'])
File "/usr/lib/python3.10/pty.py", line 181, in spawn
_copy(master_fd, master_read, stdin_read)
File "/usr/lib/python3.10/pty.py", line 157, in _copy
data = stdin_read(STDIN_FILENO)
File "/usr/lib/python3.10/pty.py", line 132, in _read
return os.read(fd, 1024)
OSError: [Errno 5] Input/output error
So let's treat both channels the same.
Upstream-Status: Submitted [https://github.com/python/cpython/pull/28388]
Signed-off-by: Alexander Kanavin <alex@linutronix.de>
---
Lib/pty.py | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/Lib/pty.py b/Lib/pty.py
index 8d8ce40..35439c6 100644
--- a/Lib/pty.py
+++ b/Lib/pty.py
@@ -154,7 +154,10 @@ def _copy(master_fd, master_read=_read, stdin_read=_read):
os.write(STDOUT_FILENO, data)
if STDIN_FILENO in rfds:
- data = stdin_read(STDIN_FILENO)
+ try:
+ data = stdin_read(STDIN_FILENO)
+ except OSError:
+ data = b""
if not data:
fds.remove(STDIN_FILENO)
else:
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