Copy stable/9 to releng/9.3 as part of the 9.3-RELEASE cycle.

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

Copy head to stable/9 as part of 9.0-RELEASE release cycle.

Approved by: re (implicit)

This is v4l2 support for the linuxulator. This allows to access FreeBSD
native devices which support the v4l2 API from processes running within
the linuxulator, e.g. skype or flash can access the multimedia/pwcbsd
or multimedia/webcamd supplied drivers.

Submitted by: nox
MFC after: 1 month

Fix the LINUX_SOUND_MIXER_INFO ioctl to return success after the
information is set to FreeBSD. It had been falling through to the end
of linux_ioctl_sound() and returning ENOIOCTL. Noticed when running the
Linux ALSA amixer tool.

Add a LINUX_SOUND_MIXER_READ_CAPS ioctl which is used by the Skype
v2.1.0.81 binary.

Reviewed by: gavin
MFC after: 2 weeks

Bring USB fixes for linux(4).

Intention of this commit is to let us take a full advantage
of libusb(8) ported to Linux. This decreases a possibility of getting
any collisions within ioctl() "command" space, especially with
relation to LINUX_SNDCTL_SEQ... stuff.

Basically, we provide commands, that will be mapped in the kernel
to correct ones and forward those to the USB layer. Port enabling
functionality brought with this patch is here:

http://www.freebsd.org/cgi/query-pr.cgi?pr=146895

Bump __FreeBSD_version to catch, since which version installing a
port makes sense.

This patch should bring no regressions. So far, only i386 is tested.

Tested by: thompsa@
Reviewed by: thompsa@
OKed by: netchild@

Let us to use our libusb(3) in Linuxolator.

With this change, Linux binaries can work with our libusb(3) when
it's compiled against our header files on GNU/Linux system -- this
solves the problem with differences between /dev layouts.

With ported libusb(3), I am able to use my USB JTAG cable with Linux
binaries that support it.

Reviewed by: thompsa

This is v4l support for the linuxulator. This allows to access FreeBSD
native devices which support the v4l API from processes running within
the linuxulator, e.g. skype or flash can access the multimedia/pwcbsd driver.

Not tested is firmware upload, framebuffer stuff and video tuner stuff
due to lack of hardware.
The clipping part (VIDIOCSWIN) needs a little bit of further work (partly
in progress, but can not be tested due to lack of a suitable device).

The submitter tested this sucessfully with Skype and flash apps on amd64 and
i386 with the multimedia/pwcbsd driver.

Submitted by: J.R. Oldroyd <fbsd@opal.com>

Add TIOCPKT and TIOCSPTLCK to the Linuxolator.

We're very lucky, because the flags used by our TIOCPKT implementation
are the same as flags used by Linux. We can safely enable TIOCPKT,
assuming EXTPROC is not used.

TIOCSPTLCK is used by unlockpt(). Because we don't need unlockpt() in
our implementation, make this ioctl a no-op.

Approved by: philip (mentor, implicit), rdivacky
Obtained from: P4 (//depot/projects/mpsafetty/...)

Implement LINUX_SIOCGIFCOUNT and LINUX_SIOCGIFINDEX/LINUX_SIOGIFINDEX.

LINUX_SIOCGIFCOUNT just returns 0 since it is not implemented in the
Linux 2.6.16.

LINUX_SIOCGIFINDEX/LINUX_SIOGIFINDEX are mapped to the FreeBSD native
SIOCGIFINDEX.

Tested by: Peter Kostouros <kpeter@melbpc.org.au>
Reviewed by: brooks, rpaulo (on net@)
Submitted by: rdivacky
MFC after: 1 week

Whitespace fixes

Add the CAM 'SG' peripheral device. This device implements a subset of the
Linux SCSI SG passthrough device API. The intention is to allow for both
running of Linux apps that want to talk to /dev/sg* nodes, and to facilitate
porting of apps from Linux to FreeBSD. As such, both native and linuxolator
entry points and definitions are provided.

Caveats:
- This does not support the procfs and sysfs nodes that the Linux SG
driver provides. Some Linux apps may rely on these for operation,
others may only use them for informational purposes.
- More ioctls need to be implemented.
- Linux uses a naming scheme of "sg[a-z]" for devices, while FreeBSD uses a
scheme of "sg[0-9]". Devfs aliasis (symlinks) are automatically created
to link the two together. However, tools like camcontrol only see the
native names.
- Some operations were originally designed to return byte counts or other
data directly as the syscall return value. The linuxolator doesn't appear
to support this well, so this driver just punts for these cases.

Now that the driver is in place, others are welcome to add missing
functionality. Thanks to Roman Divacky for pushing this work along.

Now that we don't have a linuxolator on alpha anymore:
- unifdef __alpha__
- revert rev. 1.66 of linux_socket.c

Linux compat bits needed to make linux programs use the new ptys :
linux_ioctl.[ch] : Implement LINUX_TIOCGPTN, which returns the pty number
linux_stats.c :
- Return the magic number for devfs.
- In various stats()-related functions, check that we're stating a
file in /dev/pts, and if so, change the st_rdev field to match what linux
expects to be there for a slave pty device. The glibc checks for this, and
their openpty() fails if it is no correct.

Start each of the license/copyright comments with /*-

Implement SNDCTL_DSP_SETDUPLEX. This may fix sound apps which want to
use full duplex mode.

Approved by: matk

Add stub for Linux SOUND_MIXER_READ_RECMASK, required by some Linux sound
applications.

PR: misc/27471
Submitted by: Gavin Atkinson (with cleanups)

Add a stub for the Linux SOUND_MIXER_INFO ioctl (even though we don't
actually implement it), as some applications, such as RealProducer,
expect to be able to use it.

PR: kern/65971
Submitted by: Matt Wright

Add support for more linux ioctls.

I've had this sitting in my tree for a long time and I can't seem to
find who sent it to me in the first place, apologies to whoever is
missing out on a Contributed by: line here.

I belive it works as it should.

Add BSD compatibility tty ioctls LINUX_TIOCSBRK and LINUX_TIOCCBRK. This
addition appears to allow VMware 3 Workstation to operate with nmdm(4)
as a virtual COM device.

Tested by: Guido van Rooij

Add an ioctl handler for the DRM. This removes the need for the DRM_LINUX
option, which has been a source of frustration for many users.

- Add support for IPC_64 extensions into shmctl(2), semctl(2) and msgctl(2);
- add wrappers for mmap2(2) and ftruncate64(2) system calls;
- don't spam console with printf's when VFAT_READDIR_BOTH ioctl(2) is invoked;
- add support for SOUND_MIXER_READ_STEREODEVS ioctl(2);
- make msgctl(IPC_STAT) and IPC_SET actually working by converting from
BSD msqid_ds to Linux and vice versa;
- properly return EINVAL if semget(2) is called with nsems being negative.

Reviewed by: marcel
Approved by: marcel
Tested with: LSB runtime test

Remove NVIDIA ioctl bits. They will be provided in a kernel module.

This patch extends the FreeBSD Linux compatibility layer to support
NVIDIA API calls; more specifically, it adds an ioctl() handler for
the range of possible NVIDIA ioctl numbers.

Submitted by: Christian Zander <zander@minion.de>

Deal with a few issues that cropped up following the recent changes
to the code for translating socket and private ioctls:

- Only perform socket ioctl translation if the file descriptor is a
socket.
- Treat socket ioctls on non-sockets specially, and for now assume
that these are directed at a tap/vmnet device, so translate the
ioctl numbers as appropriate (the way if_tap abuses some socket
ioctls to pass non-ifreq data is utterly bogus, but this is how
VMware on FreeBSD has always "worked"; I will deal with this
later).
- Add (untested) support for translating SIOCSIFADDR.
- In all cases where we fail to translate an ioctl, return ENOIOCTL
so that other handlers have a chance to do the translation.

This should fix the "/dev/vmnet1: Invalid argument" errors that
users of VMware were experiencing, though I have only verified this
on RELENG_4.

Submitted by: des (mostly)
MFC after: 3 days

Implement DVD-ROM ioctls.

PR: 26955
Submitted by: Boris Nikolaus (email unknown)

Forced commit:

PR: 22971
Submitted by: Masahiko KIMOTO <kimoto@ohnolab.org>

Implement missing SOUND_MIXER_WRITE_RECSRC ioctl.

PR: 22971
Tested by: dougb

Forward declare struct ifnet - this fixes a warning in tdfx_pci.c

Tweak the way we determine if an interface needs to have its name translated.
Add some missing break statements in the socket ioctl switch.
Check the return value from copyin() / copyout().
Fix some disorderings and misindentations.
Support a couple more socket ioctls.
Add missing break statements.

Fix Alpha related brokenness. We used to have a MD linux_ioctl.h
that appeared to be very different from the MI version. These
differences were mostly bogus and caused by copying octal
definitions and write them as hexadecimal values without doing
any base conversion (ie 010 was copied to 0x10). After filtering
out these differences, any remaining (real) incompatibilities
have been merged into the MI header file to make them more visible.

While here, fix the termios <-> termio conversion WRT to the c_cc
field for Alpha. The termios values do not match the termio values
and thus prevents us from copying.

By eliminating the Alpha MD copy of linux_ioctl.h we also fixed
the recent build breakage caused by putting new bits in the MI
header and not in the MD header.

Add support for the "device private" ioctls soon to be used by the an driver.
Also slightly change the name translation policy - only rename interfaces
that have the IFF_BROADCAST flag set. This is not perfect, but is closer to
how Linux names network interfaces.

Fix typo in license.

Fix some style bugs. The long line is in a chunk of code that's
being rewritten, though.

Submitted by: bde

Implement Linux BLKGETSIZE ioctl, and open the door to implementing
other BLK.* ioctls should the desire arize.

Approved by: jkh (via dufault)

Implement pluggable ioctl handlers.

Other modules can register and unregister ioctl handlers to extend the
ioctls known by the Linuxulator. A recent application is the vmware
port. The Linuxulator itself uses the new interface to register its
handlers as well. Handlers for the following types of ioctls have been
defined:
cdrom
console (=keyboard and VT handling)
socket
sound
termio

All ioctl related defines and declarations have been moved to a new
file (linux_ioctl.h), except for the pluggable ioctl handler interface
definition.

While there, cleanup linux.h some more.

linux.h and linux_ioctl.[ch] have been made to conform to style(9) as
much as possible.

Inspired and reviewed by: Vladimir N. Silyaev