Work in progress to pass the image extents to the kernel,

- code is disabled yet as the bootloader doesn't have add_boot_item.. will need to pass via kernel args
- add a GetFileMap() method to the vfs, and implement it in FAT code.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@28445 a95241bf-73f2-0310-859d-f6bbb57e9c96

headers/private/kernel/boot/FileMapDisk.h

@@ -22,6 +22,14 @@ struct file_map_run {
 	off_t len;
 };
 
+struct file_map_boot_item {
+	int32 block_size;
+	int32 num_runs;
+	struct file_map_run runs[FMAP_MAX_RUNS];
+};
+
+#ifdef _BOOT_MODE
+
 class FileMap {
 public:
 	FileMap();
@@ -49,12 +57,13 @@ class FileMapDisk : public Node {
 			size_t bufferSize);
 
 		virtual status_t GetName(char *nameBuffer, size_t bufferSize) const;
+		virtual status_t GetFileMap(struct file_map_run *runs, int32 *count);
 		virtual off_t Size() const;
 
-		status_t GetFileMap(FileMap **map);
-
 		static FileMapDisk *FindAnyFileMapDisk(Directory *volume);
 
+		status_t RegisterFileMapBootItem();
+
 	private:
 		Node		*fNode;
 		/*
@@ -65,4 +74,6 @@ class FileMapDisk : public Node {
 	
 };
 
+#endif // _BOOT_MODE
+
 #endif	// _BOOT_FILE_MAP_DISK_H

headers/private/kernel/boot/vfs.h

@@ -14,6 +14,8 @@
 
 #ifdef __cplusplus
 
+struct file_map_run;
+
 /** This is the base class for all VFS nodes */
 
 class Node : public DoublyLinkedListLinkImpl<Node> {
@@ -28,6 +30,7 @@ class Node : public DoublyLinkedListLinkImpl<Node> {
 		virtual ssize_t WriteAt(void *cookie, off_t pos, const void *buffer, size_t bufferSize) = 0;
 
 		virtual status_t GetName(char *nameBuffer, size_t bufferSize) const;
+		virtual status_t GetFileMap(struct file_map_run *runs, int32 *count);
 		virtual int32 Type() const;
 		virtual off_t Size() const;
 		virtual ino_t Inode() const;