sys/platform: Add missing copyright for two header files

busdma - Remove filter functionality

- Remove filtfunc and filtarg arguments from bus_dma_tag_create() and
fix all callers. All callers use NULL today for both filterfunc and
filterarg with one

busdma - Remove filter functionality

- Remove filtfunc and filtarg arguments from bus_dma_tag_create() and
fix all callers. All callers use NULL today for both filterfunc and
filterarg with one exception: if_jme.

- Remove filter functionality internally and parent tag tracking.
Without filter functions, we do not need to keep track of tag
ancestry. All inheritance of the parent tag's parameters occurs when
creating the new child tag.

- rename run_filter() to addr_needs_bounce().

- FreeBSD keeps the filtfunc and filtarg arguments but requires them to
be NULL.

- Drop filterfunc usage from if_jme.

In case of "JMC260 chip full mask revision 2", which has a hardware bug
when it comes to DMA transfers crossing the 4 GB bounday, the parent
buffer tag already limits DMA memory to 32bit address space. As such it
should be safe to drop the filterfunc. The filterfunc was checking if
the lower 32bits of the physical address used for DMA are all 0. In case
of a 32bit address space, the only address where all lower 32-bits are
all zero is 0 itself and I am here assuming that the physical address 0
is not used for DMA transfers!

Mainly obtained from: FreeBSD (commits 7cb028de, 900907f4, 1228b93b, 3933ff56)

show more ...

kernel - Add per-process capability-based restrictions

* This new system allows userland to set capability restrictions which
turns off numerous kernel features and root accesses. These restricti

kernel - Add per-process capability-based restrictions

* This new system allows userland to set capability restrictions which
turns off numerous kernel features and root accesses. These restrictions
are inherited by sub-processes recursively. Once set, restrictions cannot
be removed.

Basic restrictions that mimic an unadorned jail can be enabled without
creating a jail, but generally speaking real security also requires
creating a chrooted filesystem topology, and a jail is still needed
to really segregate processes from each other. If you do so, however,
you can (for example) disable mount/umount and most global root-only
features.

* Add new system calls and a manual page for syscap_get(2) and syscap_set(2)

* Add sys/caps.h

* Add the "setcaps" userland utility and manual page.

* Remove priv.9 and the priv_check infrastructure, replacing it with
a newly designed caps infrastructure.

* The intention is to add path restriction lists and similar features to
improve jailess security in the near future, and to optimize the
priv_check code.

show more ...

x86_64/identcpu: Print supported XSAVE features

Referred to FreeBSD.

x86_64/identcpu: Print more CPU features

Generally keep in sync with 'x86_64/include/specialreg.h'.

x86_64/identcpu: Add comments to features for consistency

x86_64/identcpu: Style cleanups

x86_64/identcpu: Add printing of CPU family and model

Obtained-from: FreeBSD

x86_64/identcpu: Remove whitespace in printing CPU vendor/ID/stepping

For consistency with the prints of other CPU features.

Obtained-from: FreeBSD

kernel/pmap: Add missing opt_ddb.h include to get at DDB.

Also fix the printing of a backtrace in two error cases.

kernel/machdep: Add missing opt_maxmem.h include to get at MAXMEM.

kernel/platform: Remove useless commented out includes of use_npx.h.

vkernel/autoconf: Add missing opt_swap.h include to get at NSWBUF_MIN.

Fix the vkernel build.

kernel/vm: Add missing opt_reset.h include to get at BROKEN_KEYBOARD_RESET.

kernel/bus_dmamap_load_ccb: Exit early if data direction is CAM_DIR_NONE.

In this case, there is no data either.

This fixes a crash in the upcoming pvscsi(4) driver.

While here, make the code refe

kernel/bus_dmamap_load_ccb: Exit early if data direction is CAM_DIR_NONE.

In this case, there is no data either.

This fixes a crash in the upcoming pvscsi(4) driver.

While here, make the code referencing ccb_h a bit shorter.

show more ...

build - Change '@' symlink to 'dragonfly'

* Change the '@' symlink to 'dragonfly', making it easier for
#include overlays to chain to dragonfly headers in the future.

kernel - provide more information on crital section count mismatch panics

* Provide more information on crital section count mismatch panics.
Include which system call number was involved, as this

kernel - provide more information on crital section count mismatch panics

* Provide more information on crital section count mismatch panics.
Include which system call number was involved, as this data might
be lost in crash dumps due to compiler optimizations.

show more ...

kernel - Fix ktrace's handling of system call return values

* Distinguish between int and long returns, properly recording
long returns (e.g. lseek(), mmap(), read(), write(), etc).
kdump will t

kernel - Fix ktrace's handling of system call return values

* Distinguish between int and long returns, properly recording
long returns (e.g. lseek(), mmap(), read(), write(), etc).
kdump will then display the correct return value instead of a truncated
return value for the affected system calls.

* Involves including a return value type width in the sysent and adjusting
the generator to calculate it.

show more ...