unix: add PthreadSigmask for Linux

Add a syscall wrapper for SYS_RT_SIGPROCMASK and export it as
PthreadSigmask. The latter is defined by POSIX and can therefore
be implemented by Darwin, etc. later on.

Follow the approach used by Signalfd of passing _C__NSIG/8 as
sigsetsize. This avoids exporting _C__NSIG and allows the syscall
to work with the current definition of Sigset_t, which doesn't
match the kernel definition of Sigset_t.

Updates golang/go#55349

Change-Id: I49dc93366a7d316d820b0c25ecdef2ebb584634b
Reviewed-on: https://go-review.googlesource.com/c/sys/+/435095
Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Tobias Klauser <tobias.klauser@gmail.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
Run-TryBot: Ian Lance Taylor <iant@google.com>
2 files changed
tree: 7941e6da7fec95e9e5b05cd3cec58de66f612d29
  1. cpu/
  2. execabs/
  3. internal/
  4. plan9/
  5. unix/
  6. windows/
  7. .gitattributes
  8. .gitignore
  9. codereview.cfg
  10. CONTRIBUTING.md
  11. go.mod
  12. LICENSE
  13. PATENTS
  14. 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.