From 7d3f81a9f330330fbfc50c3a511e95febb080194 Mon Sep 17 00:00:00 2001
From: David du Colombier <0intro@gmail.com>
Date: Sat, 11 Apr 2015 14:58:42 +0200
Subject: [PATCH] syscall: ignore getwd errors when fixing working directory on
 Plan 9

In Plan 9, goroutines can run in different processes,
which don't share their working directory. However,
Go expects the working directory to be program-wide.

We use a Fixwd function to fix the working directory
before calling system calls which depend on the
working directory.

In fixwdLocked, the working directory is not fixed
when getwd returns an error. However, an error can
happen is some cases, notably when the directory
has been previously removed in another process.

Fixes #10422.

Change-Id: Ie0c36f97c4b5ebe27ff0ead360987c5b35f825e4
Reviewed-on: https://go-review.googlesource.com/8800
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
---
 src/syscall/pwd_plan9.go | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/src/syscall/pwd_plan9.go b/src/syscall/pwd_plan9.go
index f8cafad92e871..12486135f0df8 100644
--- a/src/syscall/pwd_plan9.go
+++ b/src/syscall/pwd_plan9.go
@@ -29,10 +29,8 @@ func fixwdLocked() {
 	if !wdSet {
 		return
 	}
-	wd, err := getwd()
-	if err != nil {
-		return
-	}
+	// always call chdir when getwd returns an error
+	wd, _ := getwd()
 	if wd == wdStr {
 		return
 	}