- Allow signals while reading the user crontab file; doing "crontab -"
does not let you abort otherwise, and doing ^Z, kill %1 leaves turds
in /var/cron/tabs
Define the default, empty "build_kernel" target, so that old source trees,
whose sys/conf/Makefile.kern.inc don't have "build_kernel" .USE target, can
be built.
(When "build_kernel" is defined, the target is overriden, as far as
sys/conf/Makefile.kern.inc is included later than the "netbsd: ..." definition
in sys/arch/*/conf/Makefile.*.)
This should address PR bin/49389.
if_attach initializes an ifnet object and registers it to the system
(e.g., ifnet_list), however, if_attach doesn't complete the
initialization and the rest of it will be done by if_alloc_sadl
that is normally directly called by device drivers or called via
functions like ether_ifattach. So there is a race between
if_attach and if_alloc_sadl (A half-baked ifnet object may be
accessed, for example, via ioctl between them).
The aim of this fix is to register an initializing ifnet object
after completing its initializations. To this end, this fix
separates if_attach into an initialization part (if_initialize)
and a registration part (if_register) and call the latter after
if_alloc_sadl (ether_ifattach). So a typical usage of the two
new APIs is like this:
if_initialize(ifp); // was if_attach
ether_ifattach(ifp, enaddr);
if_register(ifp);
Nonetheless, changing every drivers to do so at once isn't
feasible. So we keep if_attach working as it used to be and
will change only some drivers that we need at this point.
Once we know the fix really works well, we'll change all
the others.
Some more information of the fix can be found here:
http://mail-index.netbsd.org/tech-kern/2014/12/10/msg018242.html
No objection on tech-kern and tech-net.
mappings of file objects. move vnode-specific details of mmap()ing a vnode
from uvm_mmap() to the new vnode-specific vn_mmap(). add new uvm_mmap_dev()
and uvm_mmap_anon() convenience functions for mapping character devices
and anonymous memory, and replace all other calls to uvm_mmap() with those.
use the new fileop in drm2 so that libdrm can use mmap() to map things
like on other platforms (instead of the ioctl that we have used so far).
nat