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 1/3] 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]) {

From 3de989b7bb39bf69fcc341f49d81f8c702163bbe Mon Sep 17 00:00:00 2001
From: Alexander Neumann <alexander@bumpern.de>
Date: Fri, 29 Jul 2016 21:05:36 +0200
Subject: [PATCH 2/3] Fix panic with empty files

---
 src/restic/fuse/file.go | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/src/restic/fuse/file.go b/src/restic/fuse/file.go
index 02b36579c..27ebae705 100644
--- a/src/restic/fuse/file.go
+++ b/src/restic/fuse/file.go
@@ -124,10 +124,9 @@ func (f *file) Read(ctx context.Context, req *fuse.ReadRequest, resp *fuse.ReadR
 	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)
+	if uint64(offset) > f.node.Size {
+		debug.Log("file.Read", "Read(%v): offset is greater than file size: %v > %v",
+			f.node.Name, req.Offset, f.node.Size)
 		return errors.New("offset greater than files size")
 	}
 

From 8418fed18e84ce15bd410a1f1f81fb1c04efa89e Mon Sep 17 00:00:00 2001
From: Alexander Neumann <alexander@bumpern.de>
Date: Fri, 29 Jul 2016 21:18:32 +0200
Subject: [PATCH 3/3] Handle empty files correctly

---
 src/restic/fuse/file.go | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/restic/fuse/file.go b/src/restic/fuse/file.go
index 27ebae705..8a4095524 100644
--- a/src/restic/fuse/file.go
+++ b/src/restic/fuse/file.go
@@ -130,6 +130,12 @@ func (f *file) Read(ctx context.Context, req *fuse.ReadRequest, resp *fuse.ReadR
 		return errors.New("offset greater than files size")
 	}
 
+	// handle special case: file is empty
+	if f.node.Size == 0 {
+		resp.Data = resp.Data[:0]
+		return nil
+	}
+
 	// Skip blobs before the offset
 	startContent := 0
 	for offset > int64(f.sizes[startContent]) {