xref: /haiku-fatelf/src/add-ons/kernel/file_systems/ext2/InodeJournal.cpp

/*
 * Copyright 2001-2010, Haiku Inc. All rights reserved.
 * This file may be used under the terms of the MIT License.
 *
 * Authors:
 *		Janito V. Ferreira Filho
 */


#include "InodeJournal.h"

#include <new>

#include <fs_cache.h>

#include "HashRevokeManager.h"


//#define TRACE_EXT2
#ifdef TRACE_EXT2
#	define TRACE(x...) dprintf("\33[34mext2:\33[0m " x)
#else
#	define TRACE(x...) ;
#endif


InodeJournal::InodeJournal(Inode* inode)
	:
	Journal(),
	fInode(inode)
{
	if (inode == NULL)
		fInitStatus = B_BAD_DATA;
	else {
		Volume* volume = inode->GetVolume();

		fFilesystemVolume = volume;
		fFilesystemBlockCache = volume->BlockCache();
		fJournalVolume = volume;
		fJournalBlockCache = volume->BlockCache();

		if (!inode->IsFileCacheDisabled())
			fInitStatus = inode->DisableFileCache();
		else
			fInitStatus = B_OK;

		if (fInitStatus == B_OK) {
			TRACE("InodeJournal::InodeJournal(): Inode's file cache disabled "
				"successfully\n");
			HashRevokeManager* revokeManager = new(std::nothrow)
				HashRevokeManager;
			TRACE("InodeJournal::InodeJournal(): Allocated a hash revoke "
				"manager at %p\n", revokeManager);

			if (revokeManager == NULL) {
				TRACE("InodeJournal::InodeJournal(): Insufficient memory to "
					"create the hash revoke manager\n");
				fInitStatus = B_NO_MEMORY;
			} else {
				fInitStatus = revokeManager->Init();

				if (fInitStatus == B_OK) {
					fRevokeManager = revokeManager;
					fInitStatus = _LoadSuperBlock();
				} else
					delete revokeManager;
			}
		}
	}
}


InodeJournal::~InodeJournal()
{
}


status_t
InodeJournal::InitCheck()
{
	if (fInitStatus != B_OK)
		TRACE("InodeJournal: Initialization error\n");
	return fInitStatus;
}


status_t
InodeJournal::MapBlock(off_t logical, fsblock_t& physical)
{
	TRACE("InodeJournal::MapBlock()\n");
	return fInode->FindBlock(logical * fBlockSize, physical);
}