K 10
svn:author
V 3
jhb
K 8
svn:date
V 27
2015-08-06T16:50:37.398106Z
K 7
svn:log
V 570
The changes that introduced fo_mmap() treated all character device
mappings as if MAP_SHARED was always present since in general MAP_PRIVATE
is not permitted for character devices.  However, there is one exception
in that MAP_PRIVATE mappings are permitted for /dev/zero.

Only require a writable file descriptor (FWRITE) for shared, writable
mappings of character devices.  vm_mmap_cdev() will reject any private
mappings for other devices.

Reviewed by:	kib
Reported by:	sbruno (broke qemu cross-builds), peter
Differential Revision:	https://reviews.freebsd.org/D3316

END