open /dev/diskmap and perform a DIOCMAP ioctl in order to open the actual
device. As a result, all programs which make use of opendev(3) can now
operate with disklabel UIDs.
Feedback from millert@
ok millert@ krw@ thib@

noticed by rhsv6 at hushmail dot com, ok sthen@

ok jsing@

get it in! jsing@

ok jasper@ (also compile tested)

ok jsg@

ok deraadt@

pointed out by jsg@

ok deraadt@

ok deraadt@

and would otherwise result in overflowing the end pointer and
cause strnlen() to return 0.  OK sthen@

Minor bump for libutil.
Previous versions of this diff and man page looked at by various people.
"you should just commit" deraadt

ibuf, buf_read to ibuf_read, READ_BUF_SIZE to IBUF_READ_SIZE.
ok henning gilles claudio jacekm deraadt

to exist before exit for malloc to dump stats in it.
tweaks from jmc@
ok otto@,jmc@

Sure deraadt@

as discussed with Theo, so that he can synch set.
(eventual gcc2 fallout to fix later)

completeness (verified).

ok millert@ tedu@

brad and millert, with hints from guenther, jmc, and otto I think.
ok previous.

complier picking, eg supporting gcc2, gcc3, and gcc4. based on diff by Marco,
with fixes from espie@.
ok espie@ general mumbling of approval of others.

ok claudio@

The ones found in gnu/ left out by intention.
ok jmc

ok eric

It needs to be started before the routing daemons.
In this way every new prefix learnt by them already has a label associated.
discussed with and ok'ed by claudio@

the default setting in rc.conf.
ok deraadt

run by root, it binds a shared address to the socket, cranks the
process priority and drops privileges. sio_open(3) will try to
connect to the private socket first (if any), then to the shared
socket. Only one user may have connections to aucat at a given
time.
based on discussions with henning, pyr and others
ok jacek, deraadt

by returning ENXIO instead of ENOENT, to essentially indicate hotplug
sensor that has gone away.  Accessing beyond the end of the sensordev
list still returns ENOENT, so that you can see there are no further devices.
ok kettenis oga

change without touching {master.,}passwd).
ok phessler@ giovanni@ "not sure if that's an ok but it's at least an o" mk@

ok deraadt@

- small tweak while here

If this happens the imsg may no longer be usable as there may be queued
messages, but this is a) already the case with the code now, and b)
would be the case if recvmsg() fails anyway, so we can document that -1
from imsg_read() invalidates the struct imsgbuf.
discussed with and ok eric

tested by krw

enlarge bsd.rd filesystem; this in turn causes a cd oflow, so enlarge
cd filesystem.
ok jsing@ deraadt@