package/python3: 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] 0d3fe8ae49
[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>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
This commit is contained in:
Romain Naour 2020-11-12 00:34:28 +01:00 committed by Peter Korsgaard
parent 6e5f672139
commit 5333ada971

View File

@ -0,0 +1,40 @@
From 3c83eedcc2df3ecf6c4a17953ca24dff60c1378e 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>
---
Lib/crypt.py | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/Lib/crypt.py b/Lib/crypt.py
index 33dbc46bb3..4692a5270c 100644
--- a/Lib/crypt.py
+++ b/Lib/crypt.py
@@ -94,7 +94,9 @@ 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 == errno.EINVAL:
+ # Not all libc libraries set errno when encryption method is not
+ # available.
+ if e.errno == errno.EINVAL or e.errno == 0:
return False
raise
if result and len(result) == method.total_size:
--
2.25.4