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[Bug libc/22959] euidaccess("/dir",W_OK) error on ACL-enabled directory
- From: "fweimer at redhat dot com" <sourceware-bugzilla at sourceware dot org>
- To: glibc-bugs at sourceware dot org
- Date: Wed, 14 Mar 2018 11:00:19 +0000
- Subject: [Bug libc/22959] euidaccess("/dir",W_OK) error on ACL-enabled directory
- Auto-submitted: auto-generated
- References: <bug-22959-131@http.sourceware.org/bugzilla/>
https://sourceware.org/bugzilla/show_bug.cgi?id=22959
--- Comment #1 from Florian Weimer <fweimer at redhat dot com> ---
I fear this needs kernel support. We are not going to reimplement the ACL
processing in userspace.
What we could do, instead, is to spawn a temporary thread and invoke the access
system call after switching to the effective IDs (all with raw system calls,
with disabled signals, so that we do not need a full thread).
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