Commit Graph

2251 Commits

Author SHA1 Message Date
Edward Tomasz Napierala
7a467312ef .Xr pstat(8), so that people have a chance to learn how to get a list
of terminal devices using "pstat -t".

MFC after:	2 weeks
Sponsored by:	The FreeBSD Foundation
2018-03-02 14:16:19 +00:00
Michal Meloun
fad101b3f2 Make rtld_bind_start() debugger friendly.
Save link register and annotate call frame structure so debugger can unwind
call frame created by rtld_bind_start().

MFC after:	2 weeks
2018-02-27 15:35:11 +00:00
Edward Tomasz Napierala
fe3f4a580a Fix gettytab(5) to document f0, f1, and f2 as unsupported; they've been gone
since r131091.

PR:             184691 (partial)
Submitted by:   naddy@
MFC after:      2 weeks
Sponsored by:   The FreeBSD Foundation
2018-02-26 17:51:18 +00:00
Edward Tomasz Napierala
170430d505 Prevent getty(8) from looping indefinitely if the device node doesn't
exist. This behaviour makes no sense for eg USB serial adapters, or
USB device-side serial templates.

This mostly reverts to pre-r135941 behaviour.

Reviewed by:	imp@
Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D14198
2018-02-25 20:15:06 +00:00
Edward Tomasz Napierala
18587b84c5 Build getty(8) with WARNS=6.
Reviewed by:	imp@
MFC after:	2 weeks
Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D14197
2018-02-21 15:57:24 +00:00
Edward Tomasz Napierala
9c33cc93cd Sprinkle static; avoid nested externs.
MFC after:	2 weeks
Sponsored by:	The FreeBSD Foundation
2018-02-04 19:05:13 +00:00
Edward Tomasz Napierala
1776dc9fd6 Add missing initializer.
MFC after:	2 weeks
Sponsored by:	The FreeBSD Foundation
2018-02-04 18:40:36 +00:00
Edward Tomasz Napierala
9a9a988e26 Rename getty's getline() to get_line(), to avoid clash with getline(3).
Obtained from:	DragonFlyBSD
MFC after:	2 weeks
Sponsored by:	The FreeBSD Foundation
2018-02-04 18:39:58 +00:00
Edward Tomasz Napierala
076ec4025d Don't cast away the const, it's not been needed since r92925.
MFC after:	2 weeks
Sponsored by:	The FreeBSD Foundation
2018-02-04 18:36:24 +00:00
Edward Tomasz Napierala
2ba8065021 Initialize all the fields. This is one of the steps required to bump WARNS.
MFC after:	2 weeks
Sponsored by:	The FreeBSD Foundation
2018-02-04 13:58:31 +00:00
Edward Tomasz Napierala
04688610ae Reduce code duplication; no functional changes.
Obtained from:	NetBSD
MFC after:	2 weeks
Sponsored by:	The FreeBSD Foundation
2018-02-04 13:55:20 +00:00
Edward Tomasz Napierala
6b1b6a5e28 Remove unused variable.
MFC after:	2 weeks
Sponsored by:	The FreeBSD Foundation
2018-02-04 13:54:05 +00:00
Marius Strobl
41fc6f680b o Let rtld(1) set up psABI user trap handlers prior to executing the
objects' init functions instead of doing the setup via a constructor
  in libc as the init functions may already depend on these handlers
  to be in place. This gets us rid of:
  - the undefined order in which libc constructors as __guard_setup()
    and jemalloc_constructor() are executed WRT __sparc_utrap_setup(),
  - the requirement to link libc last so __sparc_utrap_setup() gets
    called prior to constructors in other libraries (see r122883).
  For static binaries, crt1.o still sets up the user trap handlers.
o Move misplaced prototypes for MD functions in to the MD prototype
  section of rtld.h.
o Sprinkle nitems().
2018-02-03 23:14:11 +00:00
Pedro F. Giffuni
5ab6bac110 rpc.sprayd: Remove 3rd and 4th clauses in christos' license.
Obtained from:	NetBSD
2017-12-28 17:51:53 +00:00
Pedro F. Giffuni
bec1dbb67b rpc.sprayd: Bring some changes from NetBSD.
Most notable, other than some style issues:
CVS 1.11:
  do not use LOG_CONS.
CVS 1.13:
  consistently use exit instead of return in main().
  use LOG_WARNING instead of LOG_ERR for non critical errors.

Obtained from:	NetBSD
MFC after:	2 weeks
2017-12-28 17:44:30 +00:00
Xin LI
a9a7c8c0a1 Replace send-mail with the more standarized sendmail, we do not create
links for send-mail in mailwrapper so it did not work anyway.

MFC after:	2 weeks
2017-12-27 06:23:50 +00:00
Xin LI
69097cd8da Use strlcpy().
MFC after:	2 weeks
2017-12-05 07:21:47 +00:00
Pedro F. Giffuni
e6209940de libexec: adoption of SPDX licensing ID tags.
Mainly focus on files that use BSD 2-Clause license, however the tool I
was using misidentified many licenses so this was mostly a manual - error
prone - task.

The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for automated tools to detect and summarize well known
opensource licenses. We are gradually adopting the specification, noting
that the tags are considered only advisory and do not, in any way,
superceed or replace the license texts.

No functional change intended.
2017-11-27 15:25:02 +00:00
Pedro F. Giffuni
8a16b7a18f General further adoption of SPDX licensing ID tags.
Mainly focus on files that use BSD 3-Clause license.

The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for automated tools to detect and summarize well known
opensource licenses. We are gradually adopting the specification, noting
that the tags are considered only advisory and do not, in any way,
superceed or replace the license texts.

Special thanks to Wind River for providing access to "The Duke of
Highlander" tool: an older (2014) run over FreeBSD tree was useful as a
starting point.
2017-11-20 19:49:47 +00:00
Pedro F. Giffuni
df57947f08 spdx: initial adoption of licensing ID tags.
The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for automated tools to detect and summarize well known
opensource licenses. We are gradually adopting the specification, noting
that the tags are considered only advisory and do not, in any way,
superceed or replace the license texts.

Special thanks to Wind River for providing access to "The Duke of
Highlander" tool: an older (2014) run over FreeBSD tree was useful as a
starting point.

Initially, only tag files that use BSD 4-Clause "Original" license.

RelNotes:	yes
Differential Revision:	https://reviews.freebsd.org/D13133
2017-11-18 14:26:50 +00:00
Edward Tomasz Napierala
ef4968d9e7 Increase rtld initial memory pool size from 32kB to 128kB.
The old value was probably fine back in 1998, when that code was imported
(although the comments still mention VAX, which was quite obsolete by then);
now, however, it's too small to handle our libc, which results in some
additional calls to munmap/mmap later on.  Asking for more virtual address
space is virtually free, and syscalls are not, thus the change.

It was suggested by kib@ that this might be a symptom of a deeper problem.
It doesn't only affect libc, though - the change also improves rtld memory
management for eg KDE libraries.  I guess it's just a natural bloat.

MFC after:	2 weeks
Sponsored by:	DARPA, AFRL
Differential Revision:	https://reviews.freebsd.org/D12834
2017-11-18 13:21:22 +00:00
John Baldwin
f2515b1cc1 Appease old GCC by disabling .cfi_sections for GCC 4.x. 2017-11-14 17:16:03 +00:00
John Baldwin
a264cb726b Some fixups to the CFI directives for PLT stub entry points.
The directives I added in r323466 and r323501 did not define a valid
CFA until several instructions into the associated functions.  This
triggers an assertion in GDB when generating a stack trace while
stopped at the first instruction of PLT stub entry point since there
is no valid CFA rule for the first instruction.

This is probably just wrong on my part as the non-simple .cfi_startproc
would have defined a valid CFA.  Instead, define a valid CFA as sp + 0
at the start of the functions and then use .cfa_def_offset to change the
offset when sp is adjusted later in the function.

Sponsored by:	DARPA / AFRL
2017-11-10 01:17:26 +00:00
John Baldwin
c3faeef12c Use NESTED() instead of LEAF() for rtld_start.
This is only cosmetic, but the entry point for rtld is not a leaf function,
and this avoids two .frame directives for rtld_start.

Sponsored by:	DARPA / AFRL
2017-11-10 01:13:45 +00:00
Bryan Drewery
ea825d0274 DIRDEPS_BUILD: Update dependencies.
Sponsored by:	Dell EMC Isilon
2017-10-31 00:07:04 +00:00
Bryan Drewery
04760bd70d These values already set by src.libnames.mk.
MFC after:	2 weeks
Sponsored by:	Dell EMC Isilon
2017-10-31 00:03:25 +00:00
Edward Tomasz Napierala
be8f91d3d0 Use MAP_PRIVATE instead of obsolete MAP_COPY. No functional changes.
MFC after:	2 weeks
2017-10-30 08:56:04 +00:00
Edward Tomasz Napierala
152036a0f7 Plug memory leak on error case.
Reported by:	Coverity
CID:		1382112
MFC after:	2 weeks
2017-10-29 12:07:27 +00:00
Edward Tomasz Napierala
b4ed9a87f9 Remove unneeded calls to access(2) from rtld(1); just call open(2) instead.
The result looks like this:

--- przed       2017-10-21 23:19:21.445034000 +0100
+++ po  2017-10-21 23:18:50.031865000 +0100
@@ -11,7 +11,6 @@ mmap(0x0,102,PROT_READ,MAP_PRIVATE,3,0x0)      = 343665418
 close(3)                                        = 0 (0x0)
 open("/usr/local/etc/libmap.d",O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC,0165) ERR#2 'No such file or directory'
 munmap(0x80067d000,102)                                 = 0 (0x0)
-access("/usr/local/lib/libintl.so.8",F_OK)      = 0 (0x0)
 openat(AT_FDCWD,"/usr/local/lib/libintl.so.8",O_RDONLY|O_CLOEXEC|O_VERIFY,00) = 3 (0x3)
 fstat(3,{ mode=-rw-r--r-- ,inode=642560,size=55188,blksize=32768 }) = 0 (0x0)
 mmap(0x0,4096,PROT_READ,MAP_PRIVATE|MAP_PREFAULT_READ,3,0x0) = 34366541824 (0x80067d000)
@@ -20,14 +19,13 @@ mmap(0x800877000,40960,PROT_READ|PROT_EXEC,MAP_PRIVATE
 mmap(0x800a81000,4096,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_FIXED|MAP_PREFAULT_READ,3,0xa000) = 34370752512 (0x800a81000)
 munmap(0x80067d000,4096)                        = 0 (0x0)
 close(3)                                        = 0 (0x0)
-access("/usr/local/lib/libc.so.7",F_OK)                 ERR#2 'No such file or directory'
+openat(AT_FDCWD,"/usr/local/lib/libc.so.7",O_RDONLY|O_CLOEXEC|O_VERIFY,00) ERR#2 'No such file or directory'
 openat(AT_FDCWD,"/var/run/ld-elf.so.hints",O_RDONLY|O_CLOEXEC,00) = 3 (0x3)
 read(3,"Ehnt\^A\0\0\0\M^@\0\0\0\M-2\0\0"...,128) = 128 (0x80)
 fstat(3,{ mode=-r--r--r-- ,inode=970684,size=306,blksize=32768 }) = 0 (0x0)
 lseek(3,0x80,SEEK_SET)                          = 128 (0x80)
 read(3,"/lib:/usr/lib:/usr/lib/compat:/u"...,178) = 178 (0xb2)
 close(3)                                        = 0 (0x0)
-access("/lib/libc.so.7",F_OK)                   = 0 (0x0)
 openat(AT_FDCWD,"/lib/libc.so.7",O_RDONLY|O_CLOEXEC|O_VERIFY,00) = 3 (0x3)
 fstat(3,{ mode=-r--r--r-- ,inode=1605239,size=1910320,blksize=32768 }) = 0 (0x0)
 mmap(0x0,4096,PROT_READ,MAP_PRIVATE|MAP_PREFAULT_READ,3,0x0) = 34366541824 (0x80067d000)

Reviewed by:	kib
MFC after:	2 weeks
Sponsored by:	DARPA, AFRL
Differential Revision:	https://reviews.freebsd.org/D12766
2017-10-24 12:56:08 +00:00
Edward Tomasz Napierala
2fe071d971 Replace lseek(2)/read(2) pair with pread(2), removing yet another syscall
from the binary startup code.

MFC after:	2 weeks
Sponsored by:	DARPA, AFRL
2017-10-24 12:04:07 +00:00
Edward Tomasz Napierala
1689a3c4ac Make find_library() conform to style(9). No functional changes.
Suggested by:	kib
MFC after:	2 weeks
Sponsored by:	DARPA, AFRL
2017-10-24 11:24:54 +00:00
Edward Tomasz Napierala
e65ad973b2 Reword the conditional; it was ugly, and adding another parameter,
which I'm going to do in a subsequent commit, would make it even uglier.
No functional changes.

MFC after:	2 weeks
Sponsored by:	DARPA, AFRL
2017-10-24 11:16:38 +00:00
Edward Tomasz Napierala
a8b31c14d2 Use xmalloc and read(2) instead of mmap(2) to read in libmap.conf(5).
This removes the need to call munmap(2) afterwards.

MFC after:	2 weeks
Sponsored by:	DARPA, AFRL
Differential Revision:	https://reviews.freebsd.org/D12767
2017-10-24 10:48:26 +00:00
Edward Tomasz Napierala
6b61e3e47a Don't call realpath(3) from libmap rtld code. This gets rid of a few calls
to fstatat(2) at binary startup; the difference looks like this:

--- przed       2017-10-14 13:55:49.983528000 +0100
+++ po  2017-10-14 14:10:39.134343000 +0100
@@ -1,15 +1,10 @@
 mmap(0x0,32768,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_ANON,-1,0x0) = 34366173184 (0x800623000)
 issetugid()                                     = 0 (0x0)
-fstatat(AT_FDCWD,"/etc",{ mode=drwxr-xr-x ,inode=1364352,size=2560,blksize=32768 },AT_SYMLINK_NOFOLLOW) = 0 (0x0)
-fstatat(AT_FDCWD,"/etc/libmap.conf",{ mode=-rw-r--r-- ,inode=1373288,size=102,blksize=32768 },AT_SYMLINK_NOFOLLOW) = 0 (0x0)
 openat(AT_FDCWD,"/etc/libmap.conf",O_RDONLY|O_CLOEXEC,00) = 3 (0x3)
 fstat(3,{ mode=-rw-r--r-- ,inode=1373288,size=102,blksize=32768 }) = 0 (0x0)
 mmap(0x0,102,PROT_READ,MAP_PRIVATE,3,0x0)       = 34366205952 (0x80062b000)
 close(3)                                        = 0 (0x0)
-fstatat(AT_FDCWD,"/usr",{ mode=drwxr-xr-x ,inode=561792,size=512,blksize=32768 },AT_SYMLINK_NOFOLLOW) = 0 (0x0)
-fstatat(AT_FDCWD,"/usr/local",{ mode=drwxr-xr-x ,inode=561800,size=512,blksize=32768 },AT_SYMLINK_NOFOLLOW) = 0 (0x0)
-fstatat(AT_FDCWD,"/usr/local/etc",{ mode=drwxr-xr-x ,inode=653279,size=1536,blksize=32768 },AT_SYMLINK_NOFOLLOW) = 0 (0x0)
-fstatat(AT_FDCWD,"/usr/local/etc/libmap.d",0x7fffffffcf50,AT_SYMLINK_NOFOLLOW) ERR#2 'No such file or directory'
+open("/usr/local/etc/libmap.d",O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC,0165) ERR#2 'No such file or directory'
 munmap(0x80062b000,102)                                 = 0 (0x0)
 openat(AT_FDCWD,"/var/run/ld-elf.so.hints",O_RDONLY|O_CLOEXEC,00) = 3 (0x3)
 read(3,"Ehnt\^A\0\0\0\M^@\0\0\0\M-2\0\0"...,128) = 128 (0x80)

Reviewed by:	kib
MFC after:	2 weeks
Sponsored by:	DARPA, AFRL
Differential Revision:	https://reviews.freebsd.org/D12741
2017-10-22 10:32:40 +00:00
Eugene Grosbein
de8d85c908 ftpd(8): fix user context handling.
Apply authenticated user context after update of wtmp(5) at start of session,
so that ftpd process is not killed by kernel with SIGXFSZ when user has
"filesize" limit lower than size of system wtmp file. Same applies
to session finalization: revert to super-user context before update of wtmp.

If ftpd hits limit while writing a file at user request,
do not get killed with SIGXFSZ instantly but apparently ignore the signal,
process error and report it to the user, and continue with the session.

PR:		143570
Approved by:	avg (mentor), mav (mentor)
MFC after:	1 week
2017-10-06 13:46:05 +00:00
Jeremie Le Hen
e415aa2846 Remove rcmds.
If they are still needed, you can find them in the net/bsdrcmds port.

This was proposed June, 20th and approved by various committers [1].
They have been marked as deprecated on CURRENT in r320644 [2] on July, 4th.
Both stable/11 and release/11.1 contain the deprecation notice (thanks to
allanjude@).

Note that ruptime(1)/rwho(1)/rwhod(8) were initially thought to be part of
rcmds but this was a mistake and those are therefore NOT removed.

[1] https://lists.freebsd.org/pipermail/freebsd-arch/2017-June/018239.html
[2] https://svnweb.freebsd.org/base?view=revision&revision=320644

Reviewed by:	bapt, brooks
Differential Revision:	https://reviews.freebsd.org/D12573
2017-10-06 08:43:14 +00:00
Gordon Tetlow
4572fb3faf Deorbit catman. The tradeoff of disk for performance has long since tipped
in favor of just rendering the manpage instead of relying on pre-formatted
catpages. Note, this does not impede the ability to use existing catpages,
it just removes the utility to generate them.

Reviewed by:	imp, allanjude
Approved by:	emaste (mentor)
Differential Revision:	https://reviews.freebsd.org/D12317
2017-09-13 16:35:16 +00:00
John Baldwin
b4e9a36bf7 Handle relocations for newer non-PIC MIPS ABI.
Newer binutils supports extensions to the MIPS ABI for non-PIC code
that is used when compiling O32 binaries with clang 5 (but not used
for N64 oddly enough).  These extensions require support for
R_MIPS_COPY relocations as well as a second PLT GOT using
R_MIPS_JUMP_SLOT relocations.

For R_MIPS_COPY, use the same approach as on other architectures where
fixups are deferred to the MD do_copy_relocations.

The additional PLT GOT for jump slots is located in a .got.plt section
which is identified by a DT_MIPS_PLTGOT dynamic entry.  This GOT also
requires fixups for the first two GOT entries just as the normal GOT.
However, the entry point for this second GOT uses a different calling
convention. Rather than passing an offset into the GOT, it passes an
offset into the .rel.plt section.  This requires a second entry point
(_rtld_pltbind_start) which calls the normal _rtld_bind() rather than
_mips_rtld_bind().  This also means providing a real version of
reloc_jmpslot() which is used by _rtld_bind().

In addition, add real implementions of reloc_plt() and
reloc_jmpslots() which walk .rel.plt handling R_MIPS_JUMP_SLOT
relocations.

Reviewed by:	kib
Sponsored by:	DARPA / AFRL
Differential Revision:	https://reviews.freebsd.org/D12326
2017-09-12 17:46:30 +00:00
Warner Losh
08d1c5b152 End softfp->hardfp transition period for arm
On hard-float 32-bit arm platforms, always search for the soft float
binaries in the alternative locations.

Sponsored by: Netflix
Differential Review: https://reviews.freebsd.org/D12274
MFC After: 1 week
2017-09-12 17:06:35 +00:00
John Baldwin
21a8b38698 Add CFI directives for _rtld_bind_start.
This allows debuggers to unwind back into the caller when stopped in the
runtime linker.

Sponsored by:	DARPA / AFRL
2017-09-11 22:18:01 +00:00
David Bright
ff48be37b5 Add a new getty/gettytab capability to generate an initial message dynamically.
This modification adds a new gettytab(5) option (iM) to specify a
program to run that will generate the initial (banner) message that is
displayed before the login prompt. Such a capability is useful when
dynamic information is needed in the banner message that cannot be
supplied by the set of % substitution sequences available in the "im"
option.

Reviewed by:	vangyzen, wblock, manpages
Approved by:	vangyzen (mentor)
MFC after:	1 week
Relnotes:	yes
Sponsored by:	Dell EMC
Differential Revision:	https://reviews.freebsd.org/D12108
2017-09-07 00:20:17 +00:00
Konstantin Belousov
cf551abc8b Add serial comma.
Submitted by:	wblock
MFC after:	3 days
2017-09-01 16:56:37 +00:00
John Baldwin
f4711b38fd Compile reloc.o with -fno-jump-tables on MIPS.
In particular, the switch statement on the type of dynamic entries
in _rtld_relocate_nonplt_self() needs to not use a jump table since
jump tables on MIPS use local GOT entries which aren't initialized
until after this loop.

Suggested by:	arichardson
Reviewed by:	emaste
Sponsored by:	DARPA / AFRL
2017-08-30 20:00:15 +00:00
John Baldwin
83d33b2bb5 Read max_stack_flags from correct object.
'obj' is not initialized here.

Reviewed by:	kib
MFC after:	1 week
Sponsored by:	DARPA / AFRL
2017-08-30 18:22:52 +00:00
Enji Cooper
188e46ab03 Add supporting changes for Add limited sandbox capability to "make check"
Non-tests/... changes:
- Add HAS_TESTS= to Makefiles with libraries and programs to enable iteration
  and propagate the appropriate environment down to *.test.mk.

tests/... changes:
- Add appropriate support Makefile.inc's to set HAS_TESTS in a minimal manner,
  since tests/... is a special subdirectory tree compared to the others.

MFC after:	2 months
MFC with:	r322511
Reviewed by:	arch (silence), testing (silence)
Differential Revision:	D12014
2017-08-14 19:21:37 +00:00
Ruslan Bukin
af19cc59ca Support for v1.10 (latest) of RISC-V privilege specification.
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
2017-08-10 14:18:09 +00:00
Ruslan Bukin
ca20f8ec29 o Replace __riscv__ with __riscv
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
2017-08-07 14:09:57 +00:00
Enji Cooper
d511b20a69 Add HAS_TESTS to all Makefiles that are currently using the
`SUBDIR.${MK_TESTS}+= tests` idiom.

This is a follow up to r321912.
2017-08-02 08:50:42 +00:00
Enji Cooper
4b330699f8 Convert traditional ${MK_TESTS} conditional idiom for including test
directories to SUBDIR.${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
2017-08-02 08:35:51 +00:00
Sepherosa Ziehau
c685956956 hyperv: Add VF bringup scripts and devd rules.
How network VF works with hn(4) on Hyper-V in non-transparent mode:

- Each network VF has a cooresponding hn(4).
- The network VF and the it's cooresponding hn(4) have the same hardware
  address.
- Once the network VF is up, e.g. ifconfig VF up:
  o  All of the transmission should go through the network VF.
  o  Most of the reception goes through the network VF.
  o  Small amount of reception may go through the cooresponding hn(4).
     This reception will happen, even if the the cooresponding hn(4) is
     down.  The cooresponding hn(4) will change the reception interface
     to the network VF, so that network layer and application layer will
     be tricked into thinking that these packets were received by the
     network VF.
  o  The cooresponding hn(4) pretends the physical link is down.
- Once the network VF is down or detached:
  o  All of the transmission should go through the cooresponding hn(4).
  o  All of the reception goes through the cooresponding hn(4).
  o  The cooresponding hn(4) fallbacks to the original physical link
     detection logic.

All these features are mainly used to help live migration, during which
the network VF will be detached, while the network communication to the
VM must not be cut off.  In order to reach this level of live migration
transparency, we use failover mode lagg(4) with the network VF and the
cooresponding hn(4) attached to it.

To ease user configuration for both network VF and non-network VF, the
lagg(4) will be created by the following rules, and the configuration
of the cooresponding hn(4) will be applied to the lagg(4) automatically.

Sponsored by:	Microsoft
Differential Revision:	https://reviews.freebsd.org/D11635
2017-07-31 07:18:15 +00:00