https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=273962
Bug ID: 273962
Summary: copy_file_range does not work on shared memory objects
Product: Base System
Version: CURRENT
Hardware: Any
OS: Any
Status: New
Severity: Affects Only Me
Priority: ---
Component: kern
Assignee: b...@freebsd.org
Reporter: thera...@freebsd.org
Using copy_file_range to copy files from anonymous shared memory objects
returns EINVAL. This is not one of the reasons for failure documented in the
man page. Ideally there should be a fallback path that works for any kind of
file descriptor, but if the system call works for a limited subset of file
descriptor types then the ones for which it does work should be documented in
the manual.
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