K 10
svn:author
V 6
tsoome
K 8
svn:date
V 27
2018-02-27T12:53:25.710443Z
K 7
svn:log
V 262
libsa: replace remaining _write callbacks by null_write

There are some _write callbacks left only returning EROFS, replace them
by null_write. return EROFS from null_write().

Reviewed by:	cem, imp, kan
Differential Revision:	https://reviews.freebsd.org/D14523

END