unix: solicit EPERM via wrong PID in creds test.

In a Linux user namespace that doesn't have UID 0 mapped, WriteMsgUnix
will return an EINVAL as the uid-valid-in-uns check comes first in the kernel.

Even if in a user and PID namespace, using the wrong PID in Ucred will
always give EPERM.

Change-Id: Ia7452bbf2911c3b9a2aa5d7df1572e8b0790ff38
GitHub-Last-Rev: 341d3f0cba0511411caffd2ac5a6c8dfb7a022ef
GitHub-Pull-Request: golang/sys#7
Reviewed-on: https://go-review.googlesource.com/103857
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>
1 file changed
tree: c3518da660f04c6656b098b35814c4d9861a6862
  1. plan9/
  2. unix/
  3. windows/
  4. .gitattributes
  5. .gitignore
  6. AUTHORS
  7. codereview.cfg
  8. CONTRIBUTING.md
  9. CONTRIBUTORS
  10. LICENSE
  11. PATENTS
  12. README.md
README.md

sys

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.