[Bug 273962] copy_file_range does not work on shared memory objects

From: <bugzilla-noreply_at_freebsd.org>
Date: Sat, 23 Sep 2023 11:14:38 UTC

--- Comment #12 from Konstantin Belousov <kib@FreeBSD.org> ---
(In reply to David Chisnall from comment #11)
It is not required, it is quality of implementation.
POSIX does not require that read(2) works on shmfd at all.

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