From: Ian Lance Taylor <iant@golang.org>
Date: Mon, 30 Oct 2017 23:31:57 +0000 (-0700)
Subject: os: clarify that OpenFile reqires one of O_RDONLY/O_WRONLY/O_RDWR
X-Git-Tag: go1.10beta1~523
X-Git-Url: http://www.git.cypherpunks.su/?a=commitdiff_plain;h=94d937178039a8f8754dcba8e1d9d491cb7bebfc;p=gostls13.git

os: clarify that OpenFile reqires one of O_RDONLY/O_WRONLY/O_RDWR

Fixes #21322.

Change-Id: Ia589c576be0b5cdb7cde5d35cd857ad7c93c372b
Reviewed-on: https://go-review.googlesource.com/74550
Reviewed-by: Robert Griesemer <gri@golang.org>
---

diff --git a/src/os/file.go b/src/os/file.go
index 1fc4cf34da..d842ce6ef0 100644
--- a/src/os/file.go
+++ b/src/os/file.go
@@ -60,7 +60,8 @@ var (
 )
 
 // Flags to OpenFile wrapping those of the underlying system. Not all
-// flags may be implemented on a given system.
+// flags may be implemented on a given system. Each call to OpenFile
+// should specify exactly one of O_RDONLY, O_WRONLY, or O_RDWR.
 const (
 	O_RDONLY int = syscall.O_RDONLY // open the file read-only.
 	O_WRONLY int = syscall.O_WRONLY // open the file write-only.