Revert "unix: fix Setfsuid and Setfsgid return values"

This reverts commit 94506bca4fdbb66e445869e35de58109a941a0bd.

Reason for revert: breaking API change; I want more discussion before we do this.
 
e.g. it breaks https://github.com/search?utf8=%E2%9C%93&q=unix.Setfsuid+filename%3A*.go&type=Code&ref=advsearch&l=&l= ... like https://github.com/9elements/osfc2019_system76_coreboot/blob/351481c7205e9afe0ad6eab3152971985363afd5/src/LinuxBoot/github.com/u-root/u-root/cmds/core/fusermount/fusermount_linux.go

Change-Id: I474195047f080d0b2c2178578c5f45520af96c53
Reviewed-on: https://go-review.googlesource.com/c/sys/+/215518
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
23 files changed
tree: 40d43083bf2c5fda8c1665777f2c51950fbaafa9
  1. cpu/
  2. plan9/
  3. unix/
  4. windows/
  5. .gitattributes
  6. .gitignore
  7. AUTHORS
  8. codereview.cfg
  9. CONTRIBUTING.md
  10. CONTRIBUTORS
  11. go.mod
  12. LICENSE
  13. PATENTS
  14. README.md
README.md

sys

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

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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.

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