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Lakka-LibreELEC/packages/lang/Python3/patches/0031-lib-crypt-uClibc-ng-doesn-t-set-errno-when-encryptio.patch

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From 3edeed879871a10acbe802f4a68cff3d4869dbde Mon Sep 17 00:00:00 2001
From: Romain Naour <romain.naour@gmail.com>
Date: Thu, 12 Nov 2020 00:16:18 +0100
Subject: [PATCH] lib/crypt: uClibc-ng doesn't set errno when encryption method
is not available
Since commit [1] in cpython, an exception is raised when an encryption method
is not available. This eception is handled only if errno is set to EINVAL by
crypt() but uClibc-ng doesn't set errno in crypt() [2].
Fixes:
https://gitlab.com/buildroot.org/buildroot/-/jobs/830981961
https://gitlab.com/buildroot.org/buildroot/-/jobs/830981979
[1] https://github.com/python/cpython/commit/0d3fe8ae4961bf551e7d5e42559e2ede1a08fd7c
[2] https://cgit.uclibc-ng.org/cgi/cgit/uclibc-ng.git/tree/libcrypt/crypt.c?h=v1.0.36#n29
Signed-off-by: Romain Naour <romain.naour@gmail.com>
[Daniel: updated for 3.10.7]
Signed-off-by: Daniel Lang <d.lang@abatec.at>
---
Lib/crypt.py | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/Lib/crypt.py b/Lib/crypt.py
index de4a14a388..ba482487a7 100644
--- a/Lib/crypt.py
+++ b/Lib/crypt.py
@@ -98,7 +98,9 @@ def _add_method(name, *args, rounds=None):
result = crypt('', salt)
except OSError as e:
# Not all libc libraries support all encryption methods.
- if e.errno in {errno.EINVAL, errno.EPERM, errno.ENOSYS}:
+ # Not all libc libraries set errno when encryption method is not
+ # available.
+ if e.errno in {errno.EINVAL, errno.EPERM, errno.ENOSYS} or e.errno == 0:
return False
raise
if result and len(result) == method.total_size:
--
2.34.1