Also enable KexecFileLoad on linux/{arm64,riscv64} now that they have
SYS_KEXEC_FILE_LOAD.

Change-Id: I1c52d09a1a617794f2df697e4966c4c24a166611
Reviewed-on: https://go-review.googlesource.com/c/sys/+/164997
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This teaches unix/mksyscall.go about mapping uint64 to syscall
arguments, similar to existing handling of int64.

Change-Id: I536b4b09bbf6a8e3016565a4a04d2b9d32cbc624
Reviewed-on: https://go-review.googlesource.com/c/164664Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>

Fixes golang/go#28027

Change-Id: Idf8b554e0fd102fd8b2f2f2ea0fa47bf139303da
Reviewed-on: https://go-review.googlesource.com/c/164778
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ctlHandler is passed to RegisterServiceCtrlHandlerEx as a callback
function. But all ctlHandler parameters have to be uintptr aligned
regardless of their type.

Adjust ctlHandler parameters, so they are aligned accordingly.

Also uncomment part of TestExample that verifies passing of
ChangeRequest.Context.

Fixes golang/go#25660

Change-Id: Ie96fa5c78b911ad9df6775f5c49e7f6d56464f6b
Reviewed-on: https://go-review.googlesource.com/c/158698Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

New Context field will be used in the following CL to test
ctlHandler parameter alignments.

Also adjust TestExample to pass hard coded Context value of 123456
to test service, and verify that correct value is logged. Final
part of the test is commented out, and will be adjusted in the next
CL.

Updates golang/go#25660

Change-Id: Iad2896ae497ee1edc0d62655eaf08671ec2651c5
Reviewed-on: https://go-review.googlesource.com/c/158697
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This is the same change as CL 164458.
netbsd-arm needs the same override to the alignment function as
openbsd-arm. This fixes the TestPassFD failure.

Update golang/go#24771

Change-Id: I9c6451feb11ec9810de9273b1324b0c23d7e6d11
Reviewed-on: https://go-review.googlesource.com/c/164497Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>

Add basic support for IBM Z (s390x) CPU feature (known as
'facilities') detection.

Note that some of these features are mandatory when using the Go
compiler (for example, ldisp and eimm) but aren't mandatory when
using gccgo.

Cryptographic function detection is not yet implemented for
gccgo.

Change-Id: Ic6494d0df0bc1c1ad1713c9ff11ae23fba03d215
Reviewed-on: https://go-review.googlesource.com/c/163003Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>
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On Android /proc/self/auxv is not readable, leading to a panic in init.
Instead of panic'ing in this case, introduce the Initialized global bool
to report whether the CPU features were initialized i.e. /proc/self/auxv
was successfullly read.

Fixes golang/go#30413

Change-Id: Ib520f202990614a76bceb0bf9d19a88eadd13e10
Reviewed-on: https://go-review.googlesource.com/c/164057Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>

This change adds a go.mod file to this repo, following the
requirements stated in bcmills's comment here:
https://golang.org/issue/28136#issuecomment-462971974. It's
important to note that we will not be
adding versions to the repo for now.

This change does not add a go.sum because this repo has no dependencies.

The change was generated by running "go mod init" and "go mod tidy" using Go
1.11.5 in the top-level directory of the repository.

Updates golang/go#28136

Change-Id: If6945f4bb17f7c84b53445054140ce9389767d89
Reviewed-on: https://go-review.googlesource.com/c/162977
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TestDup used a file descriptor without ensuring it was free,
leading to rare crashes in the runtime netpoller when the victim fd
was the polling descriptor.

Updates golang/go#29423

Change-Id: Idc8b6b47f7e966e045f57f2028e7b6b79e0fb3f3
Reviewed-on: https://go-review.googlesource.com/c/163638Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>

Change-Id: I06997987f2d54a1fbca098878a3bac473ec1bfc0
Reviewed-on: https://go-review.googlesource.com/c/163379
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Add the SetsockoptCanRawFilter func and CanFilter type to allow kernel
message filtering on AF_CAN sockets.

Fixes golang/go#29638

Change-Id: I4042825527ba2bc9aeb8dbe70d1960a06b15c29e
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Adding this helper enables me to eliminate some nasty code which
invokes unix.Syscall6 directly, and which has 32-bit shims for
invoking setsockopt properly on 32-bit Linux.

Change-Id: I53ef411e4c96cef557999261760cddc00df58d8a
Reviewed-on: https://go-review.googlesource.com/c/163303
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The current implementation for ppc64{,le} only supports linux (through
HWCaps read from /proc/self/auxv) and fails to build e.g. on
aix/ppc64.

Change-Id: I5e1efe75c781fd08bc7bbe797df88295726ba62b
Reviewed-on: https://go-review.googlesource.com/c/162798
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x/sys/unix is vendored into the standard library, and the commit hook
for the standard library requires files to be gofmt-clean.

Updates golang/go#26924

Change-Id: I22a994062bcdbebe8a1fe1ae0ed4606837f03079
Reviewed-on: https://go-review.googlesource.com/c/162990Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

Updates golang/go#28387

Change-Id: Ibcdc3f9cb3dc43b86b7e7d3539ed592219e54aba
Reviewed-on: https://go-review.googlesource.com/c/162987
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These are an implementation detail and should not have been
exported. This only affects Linux on platforms other than 386 and
amd64.

Fixes golang/go#30255.

Change-Id: Ib23b42a7309fd6093b6b9d8b6628de222a3928be
Reviewed-on: https://go-review.googlesource.com/c/163004
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The words in auxval are encoded in native byte order.

I haven't added a test. This fix will be tested when s390x support
is added to the package.

Change-Id: I276f833660e6906c319995798faf9054ffc69461
Reviewed-on: https://go-review.googlesource.com/c/162902
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The current implementation for arm64 only supports linux (through HWCaps
read from /proc/self/auxv) and fails to build e.g. on darwin/arm64.

Fixes golang/go#30237

Change-Id: I9f32a285760795441a829b0a81b2d5aff04e2dc4
Reviewed-on: https://go-review.googlesource.com/c/162797
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Update references to mksyscall*.pl and mksysnum*.pl Perl scripts in
"README.md" with mksyscall*.go and mksysnum*.go Go programs.

Updates golang/go#27779

Change-Id: Ide3f5d9894c91aa6103d6bbe5ec64a47c969daa7
Reviewed-on: https://go-review.googlesource.com/c/162278Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>

Port mksyscall_solaris.pl Perl script to mksyscall_solaris.go.
mkall.sh script is modified to run mksyscall_solaris.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: I773c9732a882780400a06f578c00e455e133231b
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Updates golang/go#25633

Change-Id: I20ff2d0cda642fb7b155d3ae06499e8c0ef0a2b2
Reviewed-on: https://go-review.googlesource.com/c/161721
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Change-Id: I77f491029a8f2e37ffbda3d0f50795287d6cd641
Reviewed-on: https://go-review.googlesource.com/c/161720
Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com>
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If you don't set GOOS and you try to regenerate
the darwin files, it appears to succeed.
However, because libc was not selected,
it generates broken code.

Change-Id: I20fb4f51dcc539a03b6c6ed03ce39b78d5987d41
Reviewed-on: https://go-review.googlesource.com/c/161719
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Drop the manually defined *_XDP constants which were added to glibc.
Install python3 instead of python because glibc's confugure script now
requires at least 3.4.

Change-Id: Ic19ff4d8aa4dbadeb5438e331ccafeafc2cc9925
Reviewed-on: https://go-review.googlesource.com/c/160957
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This is a very classic and highly useful Windows API that I'm surprised
it's still not here.

Change-Id: If54319099cd94dd727126c579dd5a681979321cd
Reviewed-on: https://go-review.googlesource.com/c/160937
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Change mode of mksyscall_aix_ppc64.go to 644.

Change-Id: Icebc0944a739b58111f5420ec2f0850b348f1fee
Reviewed-on: https://go-review.googlesource.com/c/160918Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

Change-Id: I79c721d0f4fe097daf096dc7404675aa3048bf6a
Reviewed-on: https://go-review.googlesource.com/c/160757
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Reviewed-by: Ian Lance Taylor <iant@golang.org>

Change-Id: I2d0094d64ba12f888758aeebdb43aed353ddeeb9
Reviewed-on: https://go-review.googlesource.com/c/160577
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Add IoctlGetRTCTime and IoctlSetRTCTime to get and set the RTC time via
the RTC_RD_TIME and RTC_SET_TIME ioctls.

Change-Id: I63190026be39746599c2cd7116603d4a1d5bd695
Reviewed-on: https://go-review.googlesource.com/c/160397
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Change-Id: I4e1facc318d87fdd2abca1de040fdcb25680339e
GitHub-Last-Rev: bfebe235283dd12d07c69609011e47f155ccc008
GitHub-Pull-Request: golang/sys#30
Reviewed-on: https://go-review.googlesource.com/c/159597Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>
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The zsysnum_{freebsd,netbsd}_arm64.go files were generated before
mksysnum was converted to Go in CL 152677. Regenerate them to adjust the
comment specifying the command used for generation.

Change-Id: I8f00249848fe20e388f255e9e615da1e0727c140
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It shouldn't make a difference for generating types and consts, but
let's use the glibc release branch anyway.

Fixes golang/go#29873

Change-Id: I15a3df250f5ae6181b2d036a10e0523ebe44ac3f
Reviewed-on: https://go-review.googlesource.com/c/158997Reviewed-by: Ian Lance Taylor <iant@golang.org>

Port mksyscall_aix_ppc64.pl Perl script to mksyscall_aix_ppc64.go.
mkall.sh script is 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: Ie888c0df470dcfc75034faa12cf3422b2d426629
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Also add additional packet timestamping constants and types defined
in the same header.

Change-Id: I4280f925b46e229f4c3a83a7fee4612592314016
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This isn't a real generation, it's mostly a copy of the amd64
files, due to difficulties in generation.

There should be little to no differences between netbsd 64bit
archs.

Change-Id: I1c7b25cfef87220c827018e73695e5ca08987156
GitHub-Last-Rev: 043207b2c25fbfe959e66bddc238d5b2f053a04f
GitHub-Pull-Request: golang/sys#27
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On linux/riscv64, char defaults to unsigned, so explicitly make
RawSockaddrUnix.Path signed.

Patch by Ryan O'Leary.

Updates golang/go#27532

Change-Id: If99a3953462ad98f61d8fafcda3ebb71b44e6018
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On linux/riscv64, the renameat syscall no longer exists and has been
superseded by renameat2. Use Renameat2 to implement Renameat on
linux/riscv64.

Based on a patch by Ryan O'Leary.

Updates golang/go#27532

Change-Id: I7c60c7f824750408265f67397b8ac1fa7226f425
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Also add a test now that all unices have Renameat.

Change-Id: I9098662569e9910122dc686559bbd04be06328fa
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Also add the SFD_* constants and SignalfdSiginfo type.

Change-Id: I3415c212b85c9d5a940ba2bf70f43739a2630d78
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