From 011d4e6ff76c76fa7c49540282dee0bafef54fac Mon Sep 17 00:00:00 2001
From: Michael Scherle
Date: Fri, 2 Nov 2018 05:13:09 -0700
Subject: cleaned up code and added improvements

- cleaned up code
- using fixed size type variables in file
- using types.h fixup macros
- replaced write/read with pwrite/pread (except for 2 
 occurrences)
- added create fuse callback---
 src/fuse/cow.h | 23 ++++++++++++++++-------
 1 file changed, 16 insertions(+), 7 deletions(-)

(limited to 'src/fuse/cow.h')

diff --git a/src/fuse/cow.h b/src/fuse/cow.h
index 298ce4e..7f2c6bb 100644
--- a/src/fuse/cow.h
+++ b/src/fuse/cow.h
@@ -2,7 +2,7 @@
  * cow.h
  *
  *  Created on: 22.08.2018
- *      Author: michael
+ *      Author: Michael Scherle
  */
 
 #ifndef COW_H_
@@ -22,20 +22,29 @@ typedef struct cow_request{
 	struct cow_request *dependencies[6];
 	struct cow_request *myDependencies[6];
 	dnbd3_signal_t* signal;
-}cow_request;
+} cow_request;
 
-bool create_cow_file(char *cow_path, char *image_Name,uint64_t imageSize);
+typedef struct {
+	uint32_t version;
+	uint64_t imageSize;
+	uint32_t nameLenght;
+	uint32_t pageSize;
+} cow_metadata;
+
+
+bool cow_createFile(char *cow_path, char *image_Name,uint64_t imageSize);
 bool createBigBlock(unsigned long id);
+int cow_read(char *buf, size_t size, off_t offset);
+uint64_t cow_loadFile( char *cow_path, uint64_t imageSize );
+
+int readBigBlock(long bigBlockId ,char *buf,size_t size, off_t offset);
 void onClose();
 cow_request getAccess(off_t offset,size_t size);
 void closeAcccess(cow_request *request);
 int write_cow(const char *data, size_t size, off_t offset);
-
 int writeToBigBlock(unsigned long bigBlockId,const char *data, off_t offset,size_t size);
 int getSmallBlockId(off_t offset);
-int cow_read(char *buf, size_t size, off_t offset);
-int readBigBlock(long bigBlockId ,char *buf,size_t size, off_t offset);
-void test();
 
+void test();
 
 #endif /* COW_H_ */
-- 
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