From 5afda94a3c987bfdbe46369d623c068f1664f18b Mon Sep 17 00:00:00 2001
From: Alexander Neumann <alexander@bumpern.de>
Date: Fri, 29 Jul 2016 20:55:09 +0200
Subject: [PATCH] Handle reads with large offsets

---
 src/restic/fuse/file.go | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/src/restic/fuse/file.go b/src/restic/fuse/file.go
index 2f0db5738..02b36579c 100644
--- a/src/restic/fuse/file.go
+++ b/src/restic/fuse/file.go
@@ -4,6 +4,7 @@
 package fuse
 
 import (
+	"errors"
 	"sync"
 
 	"restic"
@@ -120,9 +121,16 @@ func (f *file) getBlobAt(i int) (blob []byte, err error) {
 }
 
 func (f *file) Read(ctx context.Context, req *fuse.ReadRequest, resp *fuse.ReadResponse) error {
-	debug.Log("file.Read", "Read(%v), file size %v", req.Size, f.node.Size)
+	debug.Log("file.Read", "Read(%v, %v, %v), file size %v", f.node.Name, req.Size, req.Offset, f.node.Size)
 	offset := req.Offset
 
+	lastSize := f.sizes[len(f.sizes)-1]
+	if offset > int64(lastSize) {
+		debug.Log("file.Read", "Read(%v): offset is greater than file size: %v > %v, node size %v",
+			f.node.Name, req.Offset, lastSize, f.node.Size)
+		return errors.New("offset greater than files size")
+	}
+
 	// Skip blobs before the offset
 	startContent := 0
 	for offset > int64(f.sizes[startContent]) {