Alan Somers 1ea95ba231 cp: fall back to read/write if copy_file_range fails
Even though copy_file_range has a file-system agnostic version, it still
fails on devfs (perhaps because the file descriptor is non-seekable?) In
that case, fallback to old-fashioned read/write. Fixes
"cp /dev/null /tmp/null"

PR:		249248
Reported by:	Michael Butler
Reviewed by:	mjg
MFC-With:	365549
Differential Revision:	https://reviews.freebsd.org/D26395
2020-09-11 20:49:36 +00:00
..
2020-07-26 15:10:33 +00:00
2019-03-09 00:30:13 +00:00
2018-11-04 17:56:16 +00:00
2017-12-07 01:57:27 +00:00
2018-12-03 20:01:51 +00:00
2020-02-02 20:51:28 +00:00
2018-06-17 05:14:50 +00:00
2017-10-31 00:07:04 +00:00
2017-10-31 00:07:04 +00:00
2017-10-31 00:07:04 +00:00
2017-10-06 08:43:14 +00:00