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gh-101857: Allow xattr detection on musl libc (#101858) 

Previously, we checked exclusively for `__GLIBC__` (AND'd with some other
conditions). Checking for `__linux__` instead should be fine.

This fixes using e.g. `os.listxattr()` on systems using musl libc.

Bug: https://bugs.gentoo.org/894130

Co-authored-by: Gregory P. Smith <greg@krypto.org>
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Sam James 2023-02-14 07:21:58 +00:00 committed by GitHub
parent 928752ce4c
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Misc/NEWS.d/next/Core and Builtins/2023-02-12-22-40-22.gh-issue-101857._bribG.rst Normal file
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@ -0,0 +1 @@
Fix xattr support detection on Linux systems by widening the check to linux, not just glibc. This fixes support for musl.

3
Modules/posixmodule.c
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@ -274,8 +274,9 @@ corresponding Unix manual entries for more information on calls.");
# undef HAVE_SCHED_SETAFFINITY
#endif
#if defined(HAVE_SYS_XATTR_H) && defined(__GLIBC__) && !defined(__FreeBSD_kernel__) && !defined(__GNU__)
#if defined(HAVE_SYS_XATTR_H) && defined(__linux__) && !defined(__FreeBSD_kernel__) && !defined(__GNU__)
# define USE_XATTRS
# include <linux/limits.h> // Needed for XATTR_SIZE_MAX on musl libc.
#endif
#ifdef USE_XATTRS