Add a new Stream class that handles reading bytes from an inode (retrieved

from the BFS Stream.h file) - it supports all data stream ranges (direct,
indirect, & double indirect).
Moved bfs_inode::InitCheck() to the new Stream class.
The Directory class now has a Stream object instead of a bfs_inode directly.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@4639 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/kernel/boot/loader/file_systems/bfs/Directory.cpp

@@ -12,7 +12,7 @@ namespace BFS {
 
 Directory::Directory(Volume &volume, block_run run)
 	:
-	fVolume(volume)
+	fStream(volume, run)
 {
 }
 
@@ -63,38 +63,4 @@ Directory::Rewind(void *cookie)
 	return B_ERROR;
 }
 
-
-//	#pragma mark -
-
-
-status_t 
-bfs_inode::InitCheck(Volume *volume)
-{
-	if (Flags() & INODE_NOT_READY) {
-		// the other fields may not yet contain valid values
-		return B_BUSY;
-	}
-
-	if (Magic1() != INODE_MAGIC1
-		|| !(Flags() & INODE_IN_USE)
-		|| inode_num.Length() != 1
-		// matches inode size?
-		|| (uint32)InodeSize() != volume->InodeSize()
-		// parent resides on disk?
-		|| parent.AllocationGroup() > int32(volume->AllocationGroups())
-		|| parent.AllocationGroup() < 0
-		|| parent.Start() > (1L << volume->AllocationGroupShift())
-		|| parent.Length() != 1
-		// attributes, too?
-		|| attributes.AllocationGroup() > int32(volume->AllocationGroups())
-		|| attributes.AllocationGroup() < 0
-		|| attributes.Start() > (1L << volume->AllocationGroupShift()))
-		return B_BAD_DATA;
-
-	// ToDo: Add some tests to check the integrity of the other stuff here,
-	// especially for the data_stream!
-
-	return B_OK;
-}
-
 }	// namespace BFS

src/kernel/boot/loader/file_systems/bfs/Directory.h

@@ -9,6 +9,7 @@
 #include <boot/vfs.h>
 
 #include "Volume.h"
+#include "Stream.h"
 
 
 namespace BFS {
@@ -29,8 +30,7 @@ class Directory : public ::Directory {
 		virtual status_t Rewind(void *cookie);
 
 	private:
-		Volume		&fVolume;
-		bfs_inode	fNode;
+		Stream		fStream;
 };
 
 }	// namespace BFS

src/kernel/boot/loader/file_systems/bfs/Jamfile

@@ -9,4 +9,5 @@ SubDirHdrs $(OBOS_TOP) src add-ons kernel file_systems bfs ;
 KernelStaticLibrary boot_bfs :
 	bfs.cpp
 	Directory.cpp
+	Stream.cpp
 	;