it automatically after it runs.
The config_intrhook mechanism allows a driver to stall the boot process
until device(s) required for booting are available, by not allowing system
inits to proceed until all intrhook functions have been unregistered.
Virtually all existing code simply unregisters from within the hook function
when it gets called.
This new function makes that common usage more convenient. Instead of
allocating and filling in a struct, passing it to a function that might (in
theory) fail, and checking the return code, now a driver can simply call
this cannot-fail routine, passing just the intrhook function and its arg.
Differential Revision: https://reviews.freebsd.org/D11963
time. Remove it from here. As far as I could tell, nothing in ports
use it (either __ARM_ARCH or __ARM_ARCH_6__ is used in all the
apatches). We do have a define for _ARM_ARCH_6, but it's mostly unused
(and will remain, since it isn't in this file).
This excess / was introduced in r280129, and fixed in r295230, but got
re-introduced while merging another branch in r298107.
Approved by: gjb
Differential Revision: https://reviews.freebsd.org/D11995
Consolidate all the regular expressions to convert from MACHINE_ARCH
to MACHINE_CPUARCH into a variable and use that variable in preference
to the almost identical copies in the tree (which should have been
identical).
Differential Revision: https://reviews.freebsd.org/D11986
svnversion metadata to the runtime and kernel packages.
Instead of traversing src/sys, as is done by newvers.sh for uname(1),
a full tree walk is done to prevent userland and/or modifications
from not being reflected in a modified tree (M).
MFC after: 5 days
Sponsored by: The FreeBSD Foundation
New version is not compatible on supervisor mode with v1.9.1
(previous version).
Highlights:
o BBL (Berkeley Boot Loader) provides no initial page tables
anymore allowing us to choose VM, to build page tables manually
and enable MMU in S-mode.
o SBI interface changed.
o GENERIC kernel.
FDT is now chosen standard for RISC-V hardware description.
DTB is now provided by Spike (golden model simulator). This
allows us to introduce GENERIC kernel. However, description
for console and timer devices is not provided in DTB, so move
these devices temporary to nexus bus.
o Supervisor can't access userspace by default. Solution is to
set SUM (permit Supervisor User Memory access) bit in sstatus
register.
o Compressed extension is now turned on by default.
o External GCC 7.1 compiler used.
o _gp renamed to __global_pointer$
o Compiler -march= string is now in use allowing us to choose
required extensions (compressed, FPU, atomic, etc).
Sponsored by: DARPA, AFRL
Differential Revision: https://reviews.freebsd.org/D11800
The assembly in sys/mips/include/profile.h will only work for o32 ABI.
Submitted by: Alexander Richardson
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D11950
geom_bsd, geom_mbr and geom_sunlabel have been obsolete since Marcel
Moolenaar's geom_part was in FreeBSD 7. They haven't been in GENERIC
since FreeBSD 8. Add warning when used.
geom_vol_ffs has been obsolete since ufs support to geom_label was
committed in FreeBSD 5. It hasn't been in GENERIC since FreeBSD 5.
Add warning when used.
geom_fox has been obsolete since gmultipath was committed in FreeBSD 7.
(no warning added, since this is a very obscure class).
These will all be removed in FreeBSD 12.
MFC After: 3 days
Differential Revision: https://reviews.freebsd.org/D11935
Note: Classes will be removed after MFC
New flag 0x4 can be configured in net.enc.[in|out].ipsec_bpf_mask.
When it is set, if_enc(4) additionally captures a packet via BPF after
invoking pfil hook. This may be useful for debugging.
MFC after: 2 weeks
Sponsored by: Yandex LLC
Differential Revision: https://reviews.freebsd.org/D11804
Implement disk_add_alias to allow aliases to be added to disks. All
disk have a primary name (say "foo") can also have secondary names
(say "bar") such that all instances of "foo" also have a "bar"
alias. So if you have foo0, foo0p1, foo1, foo1s1 and foo1s1a nodes
created by the foo driver and gpart, device nodes bar0, bar0p1, bar1,
bar1s1 and bar1s1a will appear as symlinks back to the original nodes.
This generalizes to multiple aliases. However, since the unit number
follows the primary name, multiple device drivers can't create the
same aliases unless those drives coorinate the unit number space (eg
you couldn't add an alias 'disk' to both 'da' and 'ada' because it's
possible to have da0 and ada0, because 'disk0' is ambiguous).
Differential Revision: https://reviews.freebsd.org/D11873
o Replace __riscv64 with (__riscv && __riscv_xlen == 64)
This is required to support new GCC 7.1 compiler.
This is compatible with current GCC 6.1 compiler.
RISC-V is extensible ISA and the idea here is to have built-in define
per each extension, so together with __riscv we will have some subset
of these as well (depending on -march string passed to compiler):
__riscv_compressed
__riscv_atomic
__riscv_mul
__riscv_div
__riscv_muldiv
__riscv_fdiv
__riscv_fsqrt
__riscv_float_abi_soft
__riscv_float_abi_single
__riscv_float_abi_double
__riscv_cmodel_medlow
__riscv_cmodel_medany
__riscv_cmodel_pic
__riscv_xlen
Reviewed by: ngie
Sponsored by: DARPA, AFRL
Differential Revision: https://reviews.freebsd.org/D11901
Remove some statements which are no longer correct after ino64, and
clarify other.
The rewording is not in fact specific to ino64 and improvements are
useful on the stable branches.
Noted and reviewed by: bde
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
This removes a need for passing CLEANDIRS in to "make clean" in a slightly
convoluted way.
Also, remove the ${MAKE_CHECK_SANDBOX_DIR} is already present -> bail logic.
It was incredibly annoying dealing with false positives/failures (of which
there are a handful in the tree with tests). It's better to just assume that
the user is smart enough to do the right thing and not invoke "make check"
(sandboxed) multiple times, keeping ${MAKE_CHECK_SANDBOX_DIR}.
- Store the symbol table contents in an anonymous swap-backed object. Have
mmap(/dev/ksyms) map that object, and stop mapping the symbol table into
the calling process in ksyms_open(). Previously we would cache a pointer
to the pmap of the opening process, and mmap(/dev/ksyms) would create a
mapping using the physical address found by a pmap lookup at the initial
mapping address. However, this assumes that the cached pmap is valid,
which may not be the case. [1]
- Remove the ksyms ioctl interface. It appears to have been added to work
around a limitation in libelf that no longer exists; see r321842.
Moreover, the interface is difficult to support and isn't present in
illumos. Since ksyms was added specifically to support lockstat(1), it
is expected that this removal won't have any real impact.
- Simplify ksyms_read() to avoid unnecessary copying.
- Don't call the device handle destructor if we fail to capture a snapshot
of the kernel's symbol table. devfs will do that for us.
Reported by: Ilja van Sprundel <ivansprundel@ioactive.com> [1]
Reviewed by: kib (previous revision)
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D11789
src.conf(5) should document which knobs are which and the dependency between each;
remove the comment so the variable can apply to non-"meta mode options".
MFC after: 2 weeks
directories to SUBDIR.${MK_TESTS} idiom
This is being done to pave the way for future work (and homogenity) in
^/projects/make-check-sandbox .
No functional change intended.
MFC after: 1 weeks
Apply the required sugar to make "make check" just work (tm) when
invoked from a subdirectory where HAS_TESTS is defined in the
relevant Makefile.
Adjust $LD_LIBRARY_PATH and $PATH appropriately from bsd.lib.mk
and bsd.prog.mk to make the "user experience" more out of the
box/seamless.
While here, make the variable immediate to avoid silly mistakes that might
result in wiping out / by accident if the variable is evaluated in a delayed
manner due to poor use of $DESTDIR.
If the user decides to specify HAS_TESTS in the upper directory, "make check"
will now iterate down the "test" directory, running the tests with an assumably
sane default value for $LD_LIBRARY_PATH, $PATH, etc.
The purpose of this work is to simplify "make check" -- in particular, to
increase dev-test velocity and get me (and others who pay attention, like
me) out of the business of paying attention to Jenkins runs and get other
developers to (hopefully) test their code more often prior to commit.
Huge caveat:
Obviously, this will fail miserably when the host can't run the target
architecture/code. Necessary compat layer or qemu usermode will be required
to make this possible, which is outside the scope of this work (batteries
not included).
_FILESMKDIR is an internal knob for creating directories
It's by no means a substitute for mtrees since the semantics for using install
are a bit rudimentary -- it's meant purely to simplify automatic directory creation
without having to invoke "make hier[archy]" from ${SRCTOP} in order to populate
a directory tree.
- bsd.compiler.mk: Must ensure that the CCACHE_WRAPPER_PATH comes first
in PATH.
- Makefile.inc1: Must prepend the CCACHE_WRAPPER_PATH into BPATH as it
overrides the PATH set in bsd.compiler.mk in sub-makes. The PATH
set in bsd.compiler.mk is not exported and doing so would cause it to
then override the BPATH set from environment. The only sane solution
is to prepend into BPATH as needed.
CCACHE_PATH could possibly be used for some of this as well.
Sponsored by: Dell EMC Isilon
service.
For tcp-client & udp-client, use the same port in configuration snippet as used
in the comment prior to remove any ambiguity on the port number which needs to
be specified.
Reviewed by: bcr (mentor) wblock (mentor)
Approved by: gavin
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D9830
This uses the /usr/local/libexec/ccache/<cc,c++> wrappers rather than
modifying CC to be '/usr/local/bin/ccache cc'. Some forms of compilation
do not support the 'command' type.
Sponsored by: Dell EMC Isilon
Linux specific things to the native fdescfs file system.
Unlike FreeBSD, the Linux fdescfs is a directory containing a symbolic
links to the actual files, which the process has open.
A readlink(2) call on this file returns a full path in case of regular file
or a string in a special format (type:[inode], anon_inode:<file-type>, etc..).
As well as in a FreeBSD, opening the file in the Linux fdescfs directory is
equivalent to duplicating the corresponding file descriptor.
Here we have mutually exclusive requirements:
- in case of readlink(2) call fdescfs lookup() method should return VLNK
vnode otherwise our kern_readlink() fail with EINVAL error;
- in the other calls fdescfs lookup() method should return non VLNK vnode.
For what new vnode v_flag VV_READLINK was added, which is set if fdescfs has beed
mounted with linrdlnk option an modified kern_readlinkat() to properly handle it.
For now For Linux ABI compatibility mount fdescfs volume with linrdlnk option:
mount -t fdescfs -o linrdlnk null /compat/linux/dev/fd
Reviewed by: kib@
MFC after: 1 week
Relnotes: yes
over the scheduling precision than 'ticks' can offer, and because sometimes
you're already working with sbintime_t units and it's dumb to convert them
to ticks just so they can get converted back to sbintime_t under the hood.
- Remove 'if_rtwn_load="YES"' line from loader.conf; the module was
renamed in r319733 + it will be loaded automatically as a dependency.
- Move new sentence to new line.
- Add short description for dev.rtwn.%d.rx_buf_size tunable.
already built with this flag so libstand should also be build as such.
This will be needed when moving to lld as it refuses to link due to
incompatible relocations.
Sponsored by: DARPA, AFRL
This fixes 'make cleandir' to use the same ordering as 'make cleanobj'.
Meaning that SUBDIR will be recursed before the current directory is
handled. This avoids an 'rm -rf /usr/obj/usr/src/lib/libc' while
a child 'rm -rf /usr/obj/usr/src/lib/libc/tests' is being ran next,
or even removing the current directory and then recursing into a child
and using the 'missing OBJDIR' logic to remove files rather than the
directory.
The most ideal ordering here would be for 'cleanobj' and 'cleandir' to
simply remove the .OBJDIR and then not recurse at all. This is only
safe if it is guaranteed that all children directories have no orphaned
files in their source checkout and are only using obj directories. This
is usually safe from the top-level build targets and when using
WITH_AUTO_OBJ. Improving the build for those cases is coming.
Reported by: cperciva, scottl
X-MFC-With: r321427
MFC after: 2 weeks
Sponsored by: Dell EMC Isilon
- Only recurse on cleanobj/cleandir if there is no .OBJDIR being used.
If we don't recurse then bsd.obj.mk will just rm -rf the OBJDIR dir.
- When recursing on cleanobj/cleandir don't remove dependfiles/dirs
redundantly from the child and main processes. Meaning '.depend', and
'tags', and '.depend.*' will now only be removed from the main
process.
- Stop recursing on 'cleandepend' since the main process can handle
removing all files via the default glob patterns in CLEANDEPENDFILES.
- This reverts r288201, by readding recursion on 'cleanobj', due to
r291635 changing how bsd.subdir.mk handles recursion.
This is primarily targeting ESTALE NFS errors from rm(1) during a
buildworld but is also a performance optimization as both issues fixed
were redundant anyway.
Reported by: cperciva, scottl
MFC after: 2 weeks
Sponsored by: Dell EMC Isilon
Also switch the logic to enable this for any non-lld linker, since
filter library support is fairly simple and is very likely supported
by any other linker capable of linking the FreeBSD base system.
MFC after: 2 months
MFC with: r321369
Sponsored by: The FreeBSD Foundation
If ipfw_netflow_fib, the ipfw rule will only match packets in that FIB.
While here correct some value in rc.conf(5) to be int and not str.
Sponsored by: Gandi.net
Create libdl.so.1 as a filter for libc.so.7 which exports public dl*
functions. The functions are resolved from the rtld instead, the goal
of creating library is to avoid errors from the static linker due to
missed libdl. For static binaries, an empty .o is compiled into
libdl.a so that static binaries still get dl stubs from libc.a.
Right now lld cannot create filter objects, disable libdl on arm64
when binutils are not used.
Reviewed by: bdrewery, dim (previos version); emaste
Exp run: PR 220525, done by antoine
Sponsored by: The FreeBSD Foundation
MFC after: 1 month
Differential revision: https://reviews.freebsd.org/D11504
The benefit of BIT_FLS() is that ffsl() can be implemented with a
count leading zeros instruction which is more widespread available.
Submitted by: Sebastian Huber <sebastian.huber@embedded-brains.de>
MFC after: 1 week
`MK_ZONEINFO_LEAPSECONDS_SUPPORT == yes` and
`MK_ZONEINFO_OLD_TIMEZONES_SUPPORT == yes`.
Keep `LEAPSECONDS` and `OLDTIMEZONES` for backwards compatibility,
but print out a warning notifying users that they should use the new
variables, in an effort to migrate them to the variables. This is being
done mostly for automated build tools, etc, that might rely on these
variables being set. The variables will be removed in the future on
^/head, e.g., after ^/stable/12 is cut.
MFC after: 1 month
Relnotes: yes
Reviewed by: bdrewery
Differential Revision: D11376
the terminal work properly out of the box when logging over a serial
line, which is quite important for the user experience on boards like
Raspberry Pi. It doesn't affect cases where the terminal size is
already non-zero, such as SSH or vt(4) sessions.
Note that this doesn't handle a scenario pointed out by rgrimes@:
when the terminal is resized after login, the terminal size won't
get updated even after logging out and back in.
Reviewed by: imp
Obtained from: CheriBSD
Sponsored by: DARPA, AFRL
Differential Revision: https://reviews.freebsd.org/D10642
- Address most of the post-commit comments on D11128.[1]
- Reference the man pages for the lock types supported by the provider.
- Add a BUGS section.
- Eliminate some redundancy by describing similar probes in the same
paragraph.
- Fix several inaccuracies, particularly in the probe argument
descriptions.
Submitted by: wblock [1]
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D11293
Instead of using GID_FT SNS request to get list of registered FCP ports,
use GID_PT to get list of all Nx_Ports, and then use GFF_ID and/or GFT_ID
requests to find whether they are FCP and target capable.
The problem with old approach is that GID_FT does not report ports without
FC-4 type registered. In particular it was impossible to boot OS from
FreeBSD FC target using QLogic FC BIOS, since one does not register FC-4
type even on new cards and so ignored by old code as incompatible.
As a side bonus this allows initiator to skip pointless logins to other
initiators by fetching that information from SNS instead.
In case some switches do not implement GFF_ID/GFT_ID correctly, add sysctls
to disable that functionality. I handled broken GFF_ID of my Brocade 200E,
but there may be other switches with different bugs.
Linux also uses GID_PT, but GFF_ID is disabled by default there, and GFT_ID
is not supported.
Sponsored by: iXsystems, Inc.
In some cases bsd.linker.mk reports an error like:
make[4]: ".../share/mk/bsd.linker.mk" line 56:
Unknown linker from LD=ld -m elf32ppc_fbsd:"
For now change this to a .warning, and then assume GNU ld 2.17.50.
At present the linker type detection is used only for enabling build-id,
and we can carry on without it when type detection fails.
Also, show errors from ${LD} --version to aid in failure diagnosis.
Successful invocations of ${LD} --version produce no output on stderr
so this will not create any spam in non-failing builds.
Tested by: swills
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D11424
- Including bsd.own.mk isn't required since no MK_<foo> knobs are being
manipulated.
- Update documentation to note that ${FILES} is installed via bsd.progs.mk,
not bsd.prog.mk.
MFC after: 1 month
- TESTSDIR doesn't need to be specified after r289158.
- Including bsd.own.mk isn't required since no MK_<foo> knobs are being
manipulated.
- TESTS_SUBDIRS should be written out in an append format, one entry
per line, to provide a better, more conflict resistant example.
MFC after: 1 month
AKA Make time_t 64 bits on powerpc(32).
PowerPC currently (until now) was one of two architectures with a 32-bit time_t
on 32-bit archs (the other being i386). This is an ABI breakage, so all ports,
and all local binaries, *must* be recompiled.
Tested by: andreast, others
MFC after: Never
Relnotes: Yes
GNU binutils includes two linkers: ld.bfd and ld.gold. For clarity use
LINKER_TYPE=bfd to refer to ld.bfd, the original binutils linker that
identifies itself as "GNU ld".
Discussed with: bdrewery
The ports binutils stores the version in the 5th word so just look for
a version using a pattern instead.
Reported by: rpokala
MFC after: 2 weeks
Sponsored by: Dell EMC Isilon
This is similar to r289659 for bsd.compiler.mk.
MFC after: 2 weeks
Reviewed by: emaste
Sponsored by: Dell EMC Isilon
Differential Revision: https://reviews.freebsd.org/D11310
This is similar to r300350 for bsd.compiler.mk.
MFC after: 2 weeks
Reviewed by: emaste
Sponsored by: Dell EMC Isilon
Differential Revision: https://reviews.freebsd.org/D11309
- Rename _SKIP_READ_DEPEND to _SKIP_DEPEND since it also avoids writing.
- This now uses .NOMETA to avoid reading any .meta files related to
DEPENDOBJS. Objects not in OBJS/DEPENDOBJS may still have their .meta
files read in if they are in the dependency graph.
- This also avoids statting .meta and .depend files in the META_MODE +
-DNO_FILEMON case.
MFC after: 2 weeks
Sponsored by: Dell EMC Isilon
Otherwise in META_MODE it may create an objwarn.meta if only bsd.obj.mk
is included; bsd.sys.mk already had .PHONY: objwarn.
MFC after: 3 days
Sponsored by: Dell EMC Isilon
This likely broke completely with r308599.
Apply the same fix for 'make destroy' which is a DIRDEPS_BUILD thing.
PR: 219819
Reported by: trasz
MFC after: 3 days
Sponsored by: Dell EMC Isilon
LIBADD is only supported for in-tree builds because we do not install
share/mk/src.libnames.mk (which provides LIBADD support) into /usr/share/mk.
So if a partial checkout is done then the LIBADDs are ignored and no LDADD is
ever added.
Provide limited support for this case for when LIBADD is composed entirely of
base libraries. This is to avoid clashes with ports and other out-of-tree
LIBADD uses that should not be mapped to LDADD and because we do not want to
support LIBADD out-of-tree right now.
Reported by: mckusick, kib
MFC after: 2 weeks
Sponsored by: Dell EMC Isilon
The BSDL dtc has grown the needed features (overlays mostly) and is able to
compile all of our base DTS.
You can use WITH_GPL_DTC is you need the GPL one or DTC= in make.conf(5)
to specify an alternate location for the compiler to use.
Discussed with: emaste, imp
Since buildenv exports SYSROOT all of these uses will now look in
WORLDTMP by default.
sys/boot/efi/loader/Makefile
A LIBSTAND hack is no longer required for buildenv.
MFC after: 2 weeks
Sponsored by: Dell EMC Isilon
Add a make.conf DTC variable that control which DTC (Device Tree Compiler)
to use.
Reviewed by: bdrewery, imp
Differential Revision: https://reviews.freebsd.org/D9577
This fixes these cases which would rebuild every time:
make[6]: /usr/obj/usr/src/libexec/rtld-elf/tests/libpythagoras/.depend, 1: ignoring stale .depend for /usr/obj/usr/src/tmp/usr/tests/libexec/rtld-elf/libm.a
make[6]: /usr/obj/usr/src/lib/libxo/tests/encoder/.depend, 1: ignoring stale .depend for /usr/obj/usr/src/tmp/usr/tests/lib/libxo/libxo.a
make[7]: /usr/obj/usr/src/lib/libthr/tests/dlopen/dso/.depend, 1: ignoring stale .depend for /usr/obj/usr/src/tmp/usr/tests/lib/libthr/dlopen/libpthread.a
The problem is that some Makefiles will override LIBDIR to where they want
their library to install. bsd.libnames.mk will then use ${LIBDIR} to define
where *existing* libraries are. This then leads to looking for the
libraries in the *target* place rather than the *expected* place.
We may want to expand this (and all of the other *DIR variables in bsd.own.mk)
into something like what Ports has, a PREFIX and a LOCALBASE. PREFIX being
where things are being installed to and LOCALBASE being where they already are.
For now store the default expected LIBDIR into LIBDIR_BASE and use that for
library locations.
Reported by: sbruno
MFC after: 1 week
Sponsored by: Dell EMC Isilon
This uses a hack to get the CMD from the meta file rather than
.ERROR_CMD since bmake currently blanks the value for non-jobs
mode.
Reviewed by: sjg (indirectly)
MFC after: 1 week
Sponsored by: Dell EMC Isilon
Zap trailing white and double spaces
Remove extra coma which is not required.
Bump date.
Reviewed by: gnn
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D11142
stack modules.
It adds support for mangling symbols exported by a module by prepending
a string to them. (This avoids overlapping symbols in the kernel linker.)
It allows the use of a macro as the module name in the DECLARE_MACRO()
and MACRO_VERSION() macros.
It allows the code to register stack aliases (e.g. both a generic name
["default"] and version-specific name ["default_10_3p1"]).
With these changes, it is trivial to compile TCP stack modules with
the name defined in the Makefile and to load multiple versions of the
same stack simultaneously. This functionality can be used to enable
side-by-side testing of an old and new version of the same TCP stack.
It also could support upgrading the TCP stack without a reboot.
Reviewed by: gnn, sjg (makefiles only)
Sponsored by: Netflix
Differential Revision: https://reviews.freebsd.org/D11086
All manpages in base are now compatible with mandoc(1), all roff documentation
will be relocated in the doc tree. man(1) can now use groff from the ports tree
if it needs.
Also remove checknr(1) and colcrt(1) which are only useful with groff.
Approved by: (no objections on the mailing lists)
Normally META_MODE ignores host files for "meta mode" decisions on whether a
file should be rebuilt or not. This is because a simple installworld can
update timestamps and cause the next build to rebuild all host tools, when the
previous ones may not have any changes in the source tree. These tools are
normally still ABI compatible. They are only rebuilt if NO_META_IGNORE_HOST is
set from the workaround/hack in r301467.
One of the major problems with this is when a host tool has objects spread
across many revisions that have mixed-ABI. For example, if struct stat were to
change on the host, some objects for a tool may have different ideas of that
struct's definition. If just 1 source file were modified and rebuilt and
linked into the tool, then that toll will have mixed-ABI objects and crash.
This exact thing happened with the ino64 commit in r301467 followed by a
trivial update to libbfd in r318750. The resulting binary would crash in
buildworld.
Sponsored by: Dell EMC Isilon
See r301467 for more details on NO_META_IGNORE_HOST. Usually the full
list of host ignores should have no real impact on the host tools. The
headers however may reliably define what the ABI is for the host. It
may be useful to allow using the headers for the build but still not
caring about things like /bin/sh, /lib/libedit.so, etc.
Sponsored by: Dell EMC Isilon
Update the documentation to catch up with r273174, which renamed
getenv -> kern_getenv
setenv -> kern_setenv
unsetenv -> kern_unsetenv
Leave the old links in place to support finger memory.
MFC after: 3 days
Sponsored by: Dell EMC
