Copy stable/10@r272459 to releng/10.1 as part of
the 10.1-RELEASE process.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Copy head (r256279) to stable/10 as part of the 10.0-RELEASE cycle.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

mdoc sweep.

Exit with proper status when wake() fails.

PR: bin/153527
Submitted by: Douglas Steinwand
MFC after: 2 weeks

style(9).

MFC after: 2 weeks

Anything that casts struct sockaddr * to struct sockaddr_foo is safe
due to careful design. We've not yet figured out how to properly
annotate the sockaddr structs to communicate this to the compiler and
there's a number of constructs in the tree that make this annotation
challenging.

As such, reduce warns to 3 here because this code really isn't warns 6
safe, even if it kinda sorta appears to be on intel (which has no such
alignment restrictions). Warns 4 adds the -Wcast-align warning.

# fixes the mips tinderbox build

If there is only one NIC in the system that is up and running, the
interface specifier on the command line can be ommited.

Besides of this, the bpf is being reused for each machine
that has to be woken up.

Submitted by: Marc Balmer <marc@msys.ch>

Make it clear that "interface" is one out of possibly many interface of the
local machine (s/the network interface/a network interface).

Submitted by: Marc Balmer <marc@msys.ch>
MFC after: 3 days

The last big commit: let usr.sbin/ use WARNS=6 by default.

Fix wake(8) synopsis to make it clear that at least one lladdr is required
as an argument.

Submitted by: Marc Balmer <marc@msys.ch>
MFC after: 3 days

Use our canonical .Dd format.

Submitted by: Ulrich Spoerlein

- Properly order headers, local variables and prototypes. [1]
- Remove unneeded headers.
- Return non-zero error code in usage().

Approved by: re (kib)
Suggested by: bde [1]

- Fix the bug in write(2) called with incorrect parameters resulting in writes
always started from the start of the packet.
- Fix usage string (multiple addresses can be specified).
- Make the source more style(9) compliant.
- Improve error reporting (do not silently fail if something goes
wrong).
- Make functions static.
- Use warns level 6.

Approved by: re (kib)
Discussed with: Marc Balmer <marc@msys.ch>, brian, mbr

Compiles without higher warn level

M wake/Makefile

Approved by: re (previous commit)

Add wake, a tool to send Wake on LAN frames to hosts on a local Ethernet network

Submitted by: Marc Balmer <marc@msys.ch>
Reviewed by: rwatson
Approved by: re

M usr.sbin/Makefile
A usr.sbin/wake
AM usr.sbin/wake/wake.c
AM usr.sbin/wake/Makefile
AM usr.sbin/wake/wake.8