From 28056ed43fbe29eae7877541fc8aeef48a0311ef Mon Sep 17 00:00:00 2001
From: Sebastian Messmer <mail@smessmer.de>
Date: Wed, 11 Mar 2015 00:34:25 +0100
Subject: [PATCH] Fix file size handling

---
 CryFile.cpp       | 4 +++-
 CryOpenFile.cpp   | 7 ++++---
 impl/FileBlob.cpp | 6 +++++-
 impl/FileBlob.h   | 1 +
 4 files changed, 13 insertions(+), 5 deletions(-)

diff --git a/CryFile.cpp b/CryFile.cpp
index 36ab6d9b..8cb5b580 100644
--- a/CryFile.cpp
+++ b/CryFile.cpp
@@ -33,12 +33,14 @@ unique_ptr<fspp::OpenFile> CryFile::open(int flags) const {
 
 void CryFile::stat(struct ::stat *result) const {
   result->st_mode = S_IFREG | S_IRUSR | S_IXUSR | S_IWUSR;
+  //TODO Loading the blob for only getting the size is not very performant.
+  result->st_size = FileBlob(_device->LoadBlob(_key)).size();
   return;
   throw FuseErrnoException(ENOTSUP);
 }
 
 void CryFile::truncate(off_t size) const {
-  throw FuseErrnoException(ENOTSUP);
+  FileBlob(_device->LoadBlob(_key)).resize(size);
 }
 
 void CryFile::unlink() {
diff --git a/CryOpenFile.cpp b/CryOpenFile.cpp
index 41275ec9..34224ea9 100644
--- a/CryOpenFile.cpp
+++ b/CryOpenFile.cpp
@@ -27,11 +27,12 @@ CryOpenFile::~CryOpenFile() {
 }
 
 void CryOpenFile::flush() {
-  throw FuseErrnoException(ENOTSUP);
+  //throw FuseErrnoException(ENOTSUP);
 }
 
 void CryOpenFile::stat(struct ::stat *result) const {
   result->st_mode = S_IFREG | S_IRUSR | S_IXUSR | S_IWUSR;
+  result->st_size = _fileBlob->size();
   return;
 }
 
@@ -50,11 +51,11 @@ void CryOpenFile::write(const void *buf, size_t count, off_t offset) {
 }
 
 void CryOpenFile::fsync() {
-  throw FuseErrnoException(ENOTSUP);
+  //throw FuseErrnoException(ENOTSUP);
 }
 
 void CryOpenFile::fdatasync() {
-  throw FuseErrnoException(ENOTSUP);
+  //throw FuseErrnoException(ENOTSUP);
 }
 
 }
diff --git a/impl/FileBlob.cpp b/impl/FileBlob.cpp
index 6dd9e993..2e55a00c 100644
--- a/impl/FileBlob.cpp
+++ b/impl/FileBlob.cpp
@@ -42,7 +42,11 @@ blockstore::Key FileBlob::key() const {
 }
 
 void FileBlob::resize(off_t size) {
-  _blob->resize(size);
+  _blob->resize(size+1);
+}
+
+off_t FileBlob::size() const {
+  return _blob->size()-1;
 }
 
 }
diff --git a/impl/FileBlob.h b/impl/FileBlob.h
index 7adc9526..dc055804 100644
--- a/impl/FileBlob.h
+++ b/impl/FileBlob.h
@@ -18,6 +18,7 @@ public:
   void write(const void *source, uint64_t offset, uint64_t count);
 
   void resize(off_t size);
+  off_t size() const;
 
   blockstore::Key key() const;