unix: add Xucred, GetsockoptXucred on darwin

Test adapted from CL 134535 from Tyler Julian (@APTy).

For posterity, the auto-generated parts were updated with:

    GOARCH_TARGET=amd64 go tool cgo -godefs types_darwin.go | GOOS=darwin GOARCH_TARGET=amd64 go run mkpost.go > ztypes_darwin_amd64.go
    GOARCH_TARGET=arm64 go tool cgo -godefs types_darwin.go | GOOS=darwin GOARCH_TARGET=arm64 go run mkpost.go > ztypes_darwin_arm64.go
    GOOS=darwin GOARCH=amd64 ./mkerrors.sh -m64 > zerrors_darwin_amd64.go ; gofmt -w zerrors_darwin_amd64.go
    GOOS=darwin GOARCH=arm64 ./mkerrors.sh -m64 > zerrors_darwin_arm64.go ; gofmt -w zerrors_darwin_arm64.go
    perl -i -npe 's,( cgo -godefs(?: -- -m64)? )/.+/(\S+.go),$$1$$2,' zerrors_darwin_amd64.go zerrors_darwin_arm64.go ztypes_darwin_amd64.go ztypes_darwin_arm64.go

Fixes golang/go#27613

Change-Id: Ie41b3da840cb9c8c140c57ecfb78e7abc4f70bea
Reviewed-on: https://go-review.googlesource.com/c/sys/+/292330
Trust: Brad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>
8 files changed
tree: f88619430c622d290d92297293205569cd98e228
  1. cpu/
  2. execabs/
  3. internal/
  4. plan9/
  5. unix/
  6. windows/
  7. .gitattributes
  8. .gitignore
  9. AUTHORS
  10. codereview.cfg
  11. CONTRIBUTING.md
  12. CONTRIBUTORS
  13. go.mod
  14. LICENSE
  15. PATENTS
  16. README.md
README.md

sys

Go Reference

This repository holds supplemental Go packages for low-level interactions with the operating system.

Download/Install

The easiest way to install is to run go get -u golang.org/x/sys. You can also manually git clone the repository to $GOPATH/src/golang.org/x/sys.

Report Issues / Send Patches

This repository uses Gerrit for code changes. To learn how to submit changes to this repository, see https://golang.org/doc/contribute.html.

The main issue tracker for the sys repository is located at https://github.com/golang/go/issues. Prefix your issue with “x/sys:” in the subject line, so it is easy to find.