From 262e5a8b4a3f0b9e741baa5c597955cb2fd145a1 Mon Sep 17 00:00:00 2001
From: Florian Weingarten <flo@hackvalue.de>
Date: Sat, 25 Apr 2015 00:36:54 +0000
Subject: [PATCH] O_NOATIME on Linux

---
 archiver.go     | 2 +-
 node_darwin.go  | 4 ++++
 node_linux.go   | 4 ++++
 node_windows.go | 4 ++++
 4 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/archiver.go b/archiver.go
index 6b58a609d..fab11226f 100644
--- a/archiver.go
+++ b/archiver.go
@@ -169,7 +169,7 @@ func (arch *Archiver) SaveTreeJSON(item interface{}) (Blob, error) {
 // SaveFile stores the content of the file on the backend as a Blob by calling
 // Save for each chunk.
 func (arch *Archiver) SaveFile(p *Progress, node *Node) (Blobs, error) {
-	file, err := os.Open(node.path)
+	file, err := node.OpenForReading()
 	defer file.Close()
 	if err != nil {
 		return nil, err
diff --git a/node_darwin.go b/node_darwin.go
index ff1c2d2c1..035fdf1c2 100644
--- a/node_darwin.go
+++ b/node_darwin.go
@@ -11,6 +11,10 @@ import (
 	"github.com/restic/restic/debug"
 )
 
+func (node *Node) OpenForReading() (*os.File, error) {
+	return os.Open(n.path)
+}
+
 func (node *Node) fill_extra(path string, fi os.FileInfo) (err error) {
 	stat, ok := fi.Sys().(*syscall.Stat_t)
 	if !ok {
diff --git a/node_linux.go b/node_linux.go
index 1c7552188..ec7175491 100644
--- a/node_linux.go
+++ b/node_linux.go
@@ -11,6 +11,10 @@ import (
 	"github.com/restic/restic/debug"
 )
 
+func (node *Node) OpenForReading() (*os.File, error) {
+	return os.OpenFile(node.path, os.O_RDONLY|syscall.O_NOATIME, 0)
+}
+
 func (node *Node) fill_extra(path string, fi os.FileInfo) error {
 	stat, ok := fi.Sys().(*syscall.Stat_t)
 	if !ok {
diff --git a/node_windows.go b/node_windows.go
index 884c33d1c..15a475330 100644
--- a/node_windows.go
+++ b/node_windows.go
@@ -2,6 +2,10 @@ package restic
 
 import "os"
 
+func (node *Node) OpenForReading() (*os.File, error) {
+	return os.Open(n.path)
+}
+
 func (node *Node) fill_extra(path string, fi os.FileInfo) error {
 	return nil
 }