K 10
svn:author
V 8
rmacklem
K 8
svn:date
V 27
2020-09-30T02:18:09.045208Z
K 7
svn:log
V 515
Make copy_file_range(2) Linux compatible for overflow of offset + len.

Without this patch, if a call to copy_file_range(2) specifies an input file
offset + len that would wrap around, EINVAL is returned.
I thought that was the Linux behaviour, but recent testing showed that
Linux accepts this case and does the copy_file_range() to EOF.

This patch changes the FreeBSD code to exhibit the same behaviour as
Linux for this case.

Reviewed by:	asomers, kib
Differential Revision:	https://reviews.freebsd.org/D26569

END