unix: use dup3 in Dup2 on all Linux platforms

The minimum required Linux kernel version for Go 1.18 will be changed to
2.6.32, see golang/go#45964. The dup3 syscall was added in 2.6.27, so it
can be used instead of the dup2 syscall which is not implemented on
arm64 and riscv64 or blocked on android.

For golang/go#45964

Change-Id: I9c677db4bae3ce441b258c49580fb9a2cd600436
Reviewed-on: https://go-review.googlesource.com/c/sys/+/350552
Trust: Tobias Klauser <tobias.klauser@gmail.com>
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Matt Layher <mdlayher@gmail.com>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
24 files changed
tree: e532d2952a398d73aea1a56f903799925ee7a452
  1. .gitattributes
  2. .gitignore
  3. AUTHORS
  4. CONTRIBUTING.md
  5. CONTRIBUTORS
  6. LICENSE
  7. PATENTS
  8. README.md
  9. codereview.cfg
  10. cpu/
  11. execabs/
  12. go.mod
  13. internal/
  14. plan9/
  15. unix/
  16. windows/
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.