Also a few links to O_ flags and Mode and syscall constants.
Change-Id: Ic6ec5780a44942050a83ed07dbf16d6fa9f83eb9
Reviewed-on: https://go-review.googlesource.com/c/go/+/655375 Reviewed-by: Junyang Shao <shaojunyang@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>