MFV illumos

4474 DTrace Userland CTF Support
4475 DTrace userland Keyword
4476 DTrace tests should be better citizens
4479 pid provider types
4480 dof emulation is missing checks

MFC after:	2 weeks
MFV illumos

4471 DTrace count() with histogram
4472 DTrace full width distribution histograms
4473 DTrace frequency trails

MFC after:	2 weeks
Check lower bound of cmsg_len.

If passed cm->cmsg_len was below cmsghdr size the experssion:
datalen = (caddr_t)cm + cm->cmsg_len - (caddr_t)data;

would give negative result. However, in practice it would not
result in a crash because the kernel would try to obtain garbage fds
for given process and would error out with EBADF.

PR:		124908
Submitted by:	campbell mumble.net (modified a little)
MFC after:	1 week
Set the version and date to fixed fields rather than using
preprocessor macros that don't allow reproducible builds.
As a side-effect, the date string is now spec-compliant.

root@bhyve:~ # dmidecode
# dmidecode 2.12
SMBIOS 2.4 present.
12 structures occupying 514 bytes.
Table at 0x000F101F.

Handle 0x0001, DMI type 0, 24 bytes
BIOS Information
        Vendor: BHYVE
        Version: 1.0
        Release Date: 03/14/2014

Submitted by:	des (original version)
Reviewed by:	tychon
MFC after:	1 week
Fix typo in r267481.

MFC after:	3 days
Add proper rangechecks in "axge_rx_frame()" function and
fix receive loop header parsing.

MFC after:	3 days
PR:		191432
Sort command flags in usage output and the manpages.
Don't hide zero-length strings when doing sysctl listings.

MFC after:	1 week
Extend the meaning of the CTLFLAG_TUN flag to automatically check if
there is an environment variable which shall initialize the SYSCTL
during early boot. This works for all SYSCTL types both statically and
dynamically created ones, except for the SYSCTL NODE type and SYSCTLs
which belong to VNETs. A new flag, CTLFLAG_NOFETCH, has been added to
be used in the case a tunable sysctl has a custom initialisation
function allowing the sysctl to still be marked as a tunable. The
kernel SYSCTL API is mostly the same, with a few exceptions for some
special operations like iterating childrens of a static/extern SYSCTL
node. This operation should probably be made into a factored out
common macro, hence some device drivers use this. The reason for
changing the SYSCTL API was the need for a SYSCTL parent OID pointer
and not only the SYSCTL parent OID list pointer in order to quickly
generate the sysctl path. The motivation behind this patch is to avoid
parameter loading cludges inside the OFED driver subsystem. Instead of
adding special code to the OFED driver subsystem to post-load tunables
into dynamically created sysctls, we generalize this in the kernel.

Other changes:
- Corrected a possibly incorrect sysctl name from "hw.cbb.intr_mask"
to "hw.pcic.intr_mask".
- Removed redundant TUNABLE statements throughout the kernel.
- Some minor code rewrites in connection to removing not needed
TUNABLE statements.
- Added a missing SYSCTL_DECL().
- Wrapped two very long lines.
- Avoid malloc()/free() inside sysctl string handling, in case it is
called to initialize a sysctl from a tunable, hence malloc()/free() is
not ready when sysctls from the sysctl dataset are registered.
- Bumped FreeBSD version to indicate SYSCTL API change.

MFC after:	2 weeks
Sponsored by:	Mellanox Technologies
After r267897 brought in a new version of file/libmagic, a filesystem image
is identified as "DOS/MBR boot sector" as opposed to "x86 boot sector".

This trips up vmrun.sh when using the new file(1) and makes it want to boot
into the installer instead.

Fix this by just looking for "boot sector" instead.
Use a common tunable to choose between vt(4)/sc(4)

With this change and previous work from ray@ it will be possible to put
both in GENERIC, and have one enabled by default, but allow the other to
be selected via the loader.

(The previous implementation had separate kern.vt.disable and
hw.syscons.disable tunables, and would panic if both drivers were
compiled in and neither was explicitly disabled.)

MFC after:	1 week
Sponsored by:	The FreeBSD Foundation
Add post-mortem debugging for "EPT Misconfiguration" VM-exit. This error
is hard to reproduce so try to collect all the breadcrumbs when it happens.

Reviewed by:	grehan
- SC_NO_SYSMOUSE isn't currently supported by vt(4), so nuke it from vt.4.
- vt_vga(4) is a driver rather than a function so reference it accordingly.
- Uncomment HISTORY section given that vt(4) will first appear in 9.3.

Reviewed by:	emaste (modulo last part)
MFC after:	3 days
Sponsored by:	Bally Wulff Games & Entertainment GmbH
Minor mdoc fix.
Correct the buffer length check to avoid overflows.

Found with:	Coverity Scan
CID:		1222502, 1222503
pw: fix up deletion of users from groups

Previuosly given 'foo,bar' members, removing 'foo' would result in an
infinite loop.

PR:		191427
Submitted by:	Voradesh Yenbut <yenbut cs.washington.edu>
MFC after:	1 week
Simplify the code a little bit using the update_sensor_sysctl() routine to
retrieve the sensor temperature.

This also avoid the overflow that could happen on sysctlnametomib(3)
because the code was not checking the length of the mib array.

CID:		1222504
Add missing variable declarations when using RSS.

Reported by: bryanv@
Add CTLFLAG_NOFETCH flag; console vty code runs before tunable fetch

Also remove redundant "" assignment for string in BSS.

Submitted by:	hselasky@
Always set UF_ARCHIVE on target (because they are by definition new files
and should be archived) and ignore error when we can't set it (e.g. NFS).

Reviewed by:	ken
MFC after:	2 weeks