Port mksysnum_{(open|net|free)bsd,dragonfly,darwin}.pl Perl
scripts to mksysnum.go.

mkall.sh script is modified to run mksysnum.go. Running
./mkall.sh generates no git diff besides command name and
function prototype in comments of generated files.

Updates golang/go#27779

Change-Id: I534734a9c7fda186ca133ba19e14481e55832be1
Reviewed-on: https://go-review.googlesource.com/c/152677Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>

With cgo supporting sparc64 as of CL 102555 and CL 132155, the Docker
based build system can be used to generate file for linux/sparc64 as
well.

Updates golang/go#15282

Change-Id: I109e55f39d3229b24b0029c42074e439c6c54dc8
Reviewed-on: https://go-review.googlesource.com/c/102655
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>

Fix a compile error due to unused import introduced by CL 154663.

Change-Id: I2a732380c35cd98dfff36289f5d72fd7d7222205
GitHub-Last-Rev: 5c7065d26c8bf85d5dd7dc74f1631ab3532f69a9
GitHub-Pull-Request: golang/sys#26
Reviewed-on: https://go-review.googlesource.com/c/155460Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>

Change-Id: Iab98581ade90ffb6c9faa29d4a45558498fff82a
Reviewed-on: https://go-review.googlesource.com/c/155398Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>
Reviewed-by: Ian Lance Taylor <iant@golang.org>

Make 1.11 the explicitly named case, and 1.12 the default.

Change-Id: Ic3674860eb9e8a5bb1cf1da12c5ac583cc0b0633
Reviewed-on: https://go-review.googlesource.com/c/155397Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

There wasn't one. I was mucking around with the Sendfile internals in
CL 154663 so I need one to make sure I didn't break anything.

Change-Id: I38b25de4995831680fdac440dfa7f26542d2624f
Reviewed-on: https://go-review.googlesource.com/c/154664
Run-TryBot: Keith Randall <khr@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>

Change mode of mksysnum.go to 644.

I also checked all the other files with 755 mode, to verify that no
other Go file has this issue. After this change, only .sh and .pl
files are executable:

  $ git ls-files -s * | grep 100755
  100755 9f73c60660b8978be4cc7041362dc8c220c71bd7 0	plan9/mkall.sh
  100755 85309c4a5ba73b0d05d53c6c262eeaf8d1038f5b 0	plan9/mkerrors.sh
  100755 252e89e14d9cbd083ce61e52f8dd34a62e5fc828 0	plan9/mksyscall.pl
  100755 3c3ab05810ee1203c0d578654dc3069587ba4e94 0	plan9/mksysnum_plan9.sh
  100755 f8dab7511d90d51fbd1470a4b3e718cc559cf7f4 0	unix/mkall.sh
  100755 955dd50f9af178321c881fe1fd5b5f95726dd28c 0	unix/mkerrors.sh
  100755 c44de8d310ef46c084ed38cdaffe74dffbbcbbd5 0	unix/mksyscall_aix_ppc.pl
  100755 53df26bb93acbd6b9841e36ac47ef73f4654b7ad 0	unix/mksyscall_aix_ppc64.pl
  100755 a354df5a6bfd678cb722ccd7ed0795f7c94ac4c2 0	unix/mksyscall_solaris.pl
  100755 20632e14608e37ba2ff7c5b3f467009cf315b51a 0	unix/mksysctl_openbsd.pl
  100755 5453c53b192319c95d47c672a40d7a73f626105f 0	unix/mksysnum_darwin.pl
  100755 6804f41216e732851470c89cb2ae1c552e5515cd 0	unix/mksysnum_dragonfly.pl
  100755 198993d0954d65da7ed143d8edd9bd12117ac697 0	unix/mksysnum_freebsd.pl
  100755 85988b140b9d843c104fe6a2a9f921eab6abcb03 0	unix/mksysnum_netbsd.pl
  100755 84edf60ca12d90b0a6a080947b1a08fb7b6c3b20 0	unix/mksysnum_openbsd.pl

Fixes golang/go#29369

Change-Id: I66eae4cec07806ea6289e229819aef8dbbad9335
Reviewed-on: https://go-review.googlesource.com/c/155417Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>

Update golang/go#17490

Change-Id: Iaec54b8ffda1a24d4c8b5671185d570fb8683155
Reviewed-on: https://go-review.googlesource.com/c/154663Reviewed-by: Ian Lance Taylor <iant@golang.org>

Update golang/go#17490

Change-Id: I55ea10ce2eb5fb1c0518a57900e78e5f0a29b893
Reviewed-on: https://go-review.googlesource.com/c/154662Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

Update golang/go#17490

Change-Id: I29feed5ddea976b39bd4c43bd1ff5942f47df083
Reviewed-on: https://go-review.googlesource.com/c/154661Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

Use libc version instead.

Update golang/go#17490

Change-Id: Ibcedccb9715961904d12fc85f69a7139b6c26658
Reviewed-on: https://go-review.googlesource.com/c/154660Reviewed-by: Ian Lance Taylor <iant@golang.org>

This system call doesn't exist on iOS.

Update golang/go#28984

Change-Id: I92eb6fd3eb263863a31338bc18c9826a2242434b
Reviewed-on: https://go-review.googlesource.com/c/154659Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

Parallel to CL 151938 for package x/sys/unix instead of syscall.

iOS needs to use these functions without the "64" postfix.
(The functions do exist, but the App Store bans their use.)

Updates golang/go#28984

Change-Id: I6b82950700cc8a1afca612844b05fa007574e008
Reviewed-on: https://go-review.googlesource.com/c/154658Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

Call into libSystem (Darwin's libc equivalent) to do system calls.
Raw syscalls are not a supported ABI on Darwin, they want us to use
libSystem calls instead.

The stdlib has already been converted to this new regime.  This
package is vendored into the stdlib, so we need to fix it also, then
vendor it in again.

Because this package isn't tied to a Go release, we need to keep the
old code around and use the new code only for 1.12 and up.

Update golang/go#17490

Change-Id: Idbcacff096b5bfeac871aa75dfd971570ac93322
Reviewed-on: https://go-review.googlesource.com/c/154179Reviewed-by: Ian Lance Taylor <iant@golang.org>

The removed paddings are expected behavior resulting from CL 150602.

Change-Id: I2c80405e20f92cca4890230c6f0644b724a8076e
Reviewed-on: https://go-review.googlesource.com/c/155257
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>

Use wevtutil.exe to query event log instead of powershell's Get-EventLog
command, which is not available on Windows IoT Core.

Updates golang/go#26148

Change-Id: Idc16d0b18d2826730d2b4062388b2a764c4886c6
Reviewed-on: https://go-review.googlesource.com/c/154817
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

pdh.dll is not available on Windows IoT core. Use netevent.dll instead.

Update golang/go#26148

Change-Id: I80c299ad030944954d5d7d182d91dc15e71341f9
Reviewed-on: https://go-review.googlesource.com/c/154560Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>

AIX doesn't provide a flock() syscall, it was previously emulated in
package syscall by using fcntl. This emulation was removed in CL 152397.
Since unix.Flock wraps syscall.Flock, the build currently fails on aix
without this change.

Change-Id: Ie887619cd64ae009ea43f00c74e450a5b8f998ac
Reviewed-on: https://go-review.googlesource.com/c/153938
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Clément Chigot <clement.chigot@atos.net>
Reviewed-by: Ian Lance Taylor <iant@golang.org>

Use the arm_sync_file_range to implement SyncFileRange.

This is an alias for sync_file_range2 syscall which is already used to
implement SyncFileRange on ppc64x. These have the order of the flags and
offset arguments reversed in order to fit the syscall arguments within 6
registers.

For more information see:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=edd5cd4a9424f22b0fa08bef5e299d41befd5622

This makes TestSyncFileRange build and pass on linux/arm.

Change-Id: I1316328ebcf550a3fb70f9ce5ebf54d8bcaa932c
Reviewed-on: https://go-review.googlesource.com/c/153939
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

runtime.GOOS and runtime.GOARCH are constants, thus all comparisons are
evaluated at compile time.

Follow-up for CL 153619 to make the code consistent with the syscall
package, cf. CL 153837

Change-Id: I0520d88c1636c6ed2acad69fce85a28042eafe56
Reviewed-on: https://go-review.googlesource.com/c/153937
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
Reviewed-by: Joel Sing <joel@sing.id.au>
TryBot-Result: Gobot Gobot <gobot@golang.org>

The OpenBSD armv7 port requires 64-bit alignment for cmsgs.

Rework the cmsg alignment code to facilitate this.

Change-Id: Ie3eae1d367e2f3ac200fa8b78e97a2eb2eccae6a
Reviewed-on: https://go-review.googlesource.com/c/153619
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>

Regenerate ztypes for openbsd/arm - most of the changes relate to the OpenBSD armv7 port
switching to EABI in September 2016.

Change-Id: I6ae8fa81ea24a30fee9609f0dce1a3f43d5f4bae
Reviewed-on: https://go-review.googlesource.com/c/153617Reviewed-by: Matt Layher <mdlayher@gmail.com>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>
Run-TryBot: Matt Layher <mdlayher@gmail.com>

ARM64 does this exact same thing, and in fact this is required on
Android 9, where Bionic now only allows lstat on 32-bit platforms
Folks are running into this when using Android on Chromebooks,
which are keeping AMD64 Android alive. So, we change the AMD64
behavior to model that of ARM64.

Change-Id: Id933cc22b42ab365c12980915557bdbf88661a4d
Reviewed-on: https://go-review.googlesource.com/c/153319
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>

ARM64 does this exact same thing, and in fact this is required on
Android 9, where Bionic now only allows inotify_init on 32-bit
platforms. Folks are running into this when using Android on
Chromebooks, which are keeping AMD64 Android alive. So, we change the
AMD64 behavior to model that of ARM64. However, since Go must run on
kernels between 2.6.27 and 2.6.23, we must still fall back to the
original call.

Fixes: https://lore.kernel.org/wireguard/CALv=V9Gv6apdWJ9P-80zf9bgByd=c3QqPhRHuw6o0_OaH0=W6g@mail.gmail.com
Change-Id: I183e82679cb7d702d12a35457920ccd422176254
Reviewed-on: https://go-review.googlesource.com/c/153318
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

Passing an empty iovs []Iovec slice to Vmsplice leads to an index out of
range panic. Fix this by passing an nil unsafe.Pointer to the underlying
syscall in case of an empty slice.

Change-Id: If1844c1b2eb0833de598aed7e79b9fcf061f7975
Reviewed-on: https://go-review.googlesource.com/c/153317
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

Port from Go internal/cpu

Updates golang/go#25185

Change-Id: I8390980e38b61f6c428fafa0665a03952e7b00bb
Reviewed-on: https://go-review.googlesource.com/c/150718
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: Martin Möhrmann <moehrmann@google.com>
Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>

Port mksysnum.pl Perl script to mksysnum.go.
mkall scripts are modified to run mksysnum.go.
Running ./mkall.sh does not generate any git diff besides
the command name in comments of generated files.

Updates golang/go#27779

Change-Id: Id62df9d819f00729ab19b6bc4d32dddcf8d9832b
Reviewed-on: https://go-review.googlesource.com/c/151377
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>

Port mksyscall.pl Perl script to mksyscall.go.
mkall scripts are modified to run mksyscall.go.
Running ./mkall.sh does not generate any git diff besides
the command name in comments of generated files.

Updates golang/go#27779

Change-Id: I8c6eb852e6821f4a91dc03cc042d8d343f1bcf66
Reviewed-on: https://go-review.googlesource.com/c/150217Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>

TestGetwd can fail on systems that have unexpected directory/partition configurations
using symlinks.

Fixes golang/go#26678

Change-Id: I44dba94c5e8b6a8e1e7e112cd7d0541d22b65d84
GitHub-Last-Rev: 727a6cc6a718969828a15d1016c89ea9be8a12e0
GitHub-Pull-Request: golang/sys#22
Reviewed-on: https://go-review.googlesource.com/c/148537Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>

IoctlSetPointerInt is necessary for interacting with the PPP kernel
driver, which wants it passed as a pointer to int, rather than the
more conventional int cast as a pointer.

We can technically do this already with
IoctlSetInt(int(uintptr(unsafe.Pointer(&foo)))), but that's just
masking the operation we're trying to execute in the first place,
and relying on the internals of IoctlSetInt to do the right
inverse transformation.

Change-Id: I1e6a1dd6190c11f06c6f5393cd2cae453939878a
GitHub-Last-Rev: a88f56073d04b02d9c076b112adaf99169a49513
GitHub-Pull-Request: golang/sys#25
Reviewed-on: https://go-review.googlesource.com/c/150321
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>

Change-Id: I76b53563e3f029d1fbaad39acd5af73df278343e
GitHub-Last-Rev: b0aff54248e67269e5934534c96340f5d2c39b6f
GitHub-Pull-Request: golang/sys#24
Reviewed-on: https://go-review.googlesource.com/c/150317Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>

`sockaddr_pppox` is a packed struct, which godefs doesn't understand.
So, I had to do the byte packing by hand instead.

Change-Id: Ib92cf43f8ae0729a0af043c4241063911c95e6bf
GitHub-Last-Rev: 8982dec099594064d3892f3fa05bb7b5989cec6d
GitHub-Pull-Request: golang/sys#23
Reviewed-on: https://go-review.googlesource.com/c/149757
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>

After CL 136816 the bits member of the FdSet struct is no longer
exported. Make sure to retain it in mkpost.go and rename it to Bits
as on all other systems.

Change-Id: I860b307a80c7e29b4a75d9d916d879ee0a31c014
Reviewed-on: https://go-review.googlesource.com/c/149897
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Yuval Pavel Zholkover <paulzhol@gmail.com>
Reviewed-by: Ian Lance Taylor <iant@golang.org>

This ioctl is used to implement ptsname on netbsd.

Change-Id: Ic87f1bf7d15c6fbef0c2226a06a4983a504c3f30
Reviewed-on: https://go-review.googlesource.com/c/148097
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

Change-Id: I18354d29db909227ae75df1c8b1ab7888375f8db
Reviewed-on: https://go-review.googlesource.com/c/147740
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>

sys/capability.h is deprecated, use sys/capsicum.h instead.

Change-Id: I05a3b8ff28d4df6536a3f10e0da7381b48329738
Reviewed-on: https://go-review.googlesource.com/c/147737
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>

When using -linkshared, the external linker on ppc64x cannot
always handle the direct branch to syscall.Syscall and similar
similar functions when the offset is too far. Instead it should
be done as a BL which can then be called through a procedure
linkage table entry.

This change removes functions Syscall, Syscall6,
RawSyscall, RawSyscall6 from asm_linux_ppc64x.s and instead
creates Go functions which call their corresponding
functions in the syscall package. As Go functions, they can be
inlined with the help of CL 147361.

Fixes golang/go#16662

Change-Id: Ibd2b6ec15b0781c3d7db25e249a3ffc9e1c2884b
Reviewed-on: https://go-review.googlesource.com/c/146518
Run-TryBot: Lynn Boger <laboger@linux.vnet.ibm.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>

Passing an empty data []byte to Fsetxattr/Setxattr/Lsetxattr leads
to an index out of range panic. Fix this by passing an nil
unsafe.Pointer to the underlying syscall in this case.

Change-Id: I5ef3983c6304c5317ed5b49afc4ed19791864dbb
Reviewed-on: https://go-review.googlesource.com/c/146198
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>

Add Faccessat, Fchownat, Linkat, Mkdirat, Mknodat, Symlinkat and
Unlinkat.

Change-Id: I9a2758ea2ca31aa59c57ead01838c08cbab2bbe1
Reviewed-on: https://go-review.googlesource.com/c/145819
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

Add Fchownat, Linkat, Mkdirat, Mkfifoat, Mknodat, Openat, Readlinkat,
Renameat, Symlinkat and Unlinkat.

Change-Id: Id498b2f1a99f281599bc226a0c50a13172e36e4f
Reviewed-on: https://go-review.googlesource.com/c/145818
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>