[apple/xnu.git] / bsd / hfs / hfscommon / Catalog / FileIDsServices.c

/*
 * Copyright (c) 2000-2003 Apple Computer, Inc. All rights reserved.
 *
 * @APPLE_LICENSE_HEADER_START@
 * 
 * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
 * 
 * This file contains Original Code and/or Modifications of Original Code
 * as defined in and that are subject to the Apple Public Source License
 * Version 2.0 (the 'License'). You may not use this file except in
 * compliance with the License. Please obtain a copy of the License at
 * http://www.opensource.apple.com/apsl/ and read it before using this
 * file.
 * 
 * The Original Code and all software distributed under the License are
 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
 * Please see the License for the specific language governing rights and
 * limitations under the License.
 * 
 * @APPLE_LICENSE_HEADER_END@
 */

#include "../../hfs_macos_defs.h"
#include "../../hfs_format.h"

#include	"../headers/FileMgrInternal.h"
#include	"../headers/HFSUnicodeWrappers.h"
#include	"../headers/CatalogPrivate.h"


struct ExtentsRecBuffer {
	ExtentKey	extentKey;
	ExtentRecord	extentData;
};
typedef struct ExtentsRecBuffer ExtentsRecBuffer;


UInt32	CheckExtents( void *extents, UInt32 blocks, Boolean isHFSPlus );
OSErr	DeleteExtents( ExtendedVCB *vcb, UInt32 fileNumber, Boolean isHFSPlus );
OSErr	MoveExtents( ExtendedVCB *vcb, UInt32 srcFileID, UInt32 destFileID, Boolean isHFSPlus );
void	CopyCatalogNodeInfo( CatalogRecord *src, CatalogRecord *dest );
void	CopyBigCatalogNodeInfo( CatalogRecord *src, CatalogRecord *dest );
void	CopyExtentInfo( ExtentKey *key, ExtentRecord *data, ExtentsRecBuffer *buffer, UInt16 bufferCount );


OSErr ExchangeFileIDs( ExtendedVCB *vcb, ConstUTF8Param srcName, ConstUTF8Param destName, HFSCatalogNodeID srcID, HFSCatalogNodeID destID, UInt32 srcHint, UInt32 destHint )
{
	CatalogKey	srcKey;		// 518 bytes
	CatalogKey	destKey;	// 518 bytes
	CatalogRecord	srcData;	// 520 bytes
	CatalogRecord	destData;	// 520 bytes
	CatalogRecord	swapData;	// 520 bytes
	SInt16		numSrcExtentBlocks;
	SInt16		numDestExtentBlocks;
	OSErr		err;
	Boolean		isHFSPlus = ( vcb->vcbSigWord == kHFSPlusSigWord );

	TrashCatalogIterator(vcb, srcID);	//	invalidate any iterators for this parentID
	TrashCatalogIterator(vcb, destID);	//	invalidate any iterators for this parentID

	err = BuildCatalogKeyUTF8(vcb, srcID, srcName, kUndefinedStrLen, &srcKey, NULL);
	ReturnIfError(err);

	err = BuildCatalogKeyUTF8(vcb, destID, destName, kUndefinedStrLen, &destKey, NULL);
	ReturnIfError(err);

	if ( isHFSPlus )
	{
		//--	Step 1: Check the catalog nodes for extents
		
		//--	locate the source file, test for extents in extent file, and copy the cat record for later
		err = LocateCatalogNodeByKey( vcb, srcHint, &srcKey, &srcData, &srcHint );
		ReturnIfError( err );
	
		if ( srcData.recordType != kHFSPlusFileRecord )
			return( cmFThdDirErr );					//	Error "cmFThdDirErr = it is a directory"
			
		//--	Check if there are any extents in the source file
Commit	Line	Data
1c79356b	1	/*
55e303ae	2	* Copyright (c) 2000-2003 Apple Computer, Inc. All rights reserved.
1c79356b A	3	*
	4	* @APPLE_LICENSE_HEADER_START@
	5	*
43866e37	6	* Copyright (c) 1999-2003 Apple Computer, Inc. All Rights Reserved.
1c79356b	7	*
43866e37 A	8	* This file contains Original Code and/or Modifications of Original Code
	9	* as defined in and that are subject to the Apple Public Source License
	10	* Version 2.0 (the 'License'). You may not use this file except in
	11	* compliance with the License. Please obtain a copy of the License at
	12	* http://www.opensource.apple.com/apsl/ and read it before using this
	13	* file.
	14	*
	15	* The Original Code and all software distributed under the License are
	16	* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
1c79356b A	17	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
1c79356b A	18	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
43866e37 A	19	* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
	20	* Please see the License for the specific language governing rights and
	21	* limitations under the License.
1c79356b A	22	*
	23	* @APPLE_LICENSE_HEADER_END@
	24	*/
1c79356b A	25
	26	#include "../../hfs_macos_defs.h"
	27	#include "../../hfs_format.h"
	28
	29	#include "../headers/FileMgrInternal.h"
	30	#include "../headers/HFSUnicodeWrappers.h"
	31	#include "../headers/CatalogPrivate.h"
	32
	33
	34	struct ExtentsRecBuffer {
9bccf70c	35	ExtentKey extentKey;
1c79356b A	36	ExtentRecord extentData;
	37	};
	38	typedef struct ExtentsRecBuffer ExtentsRecBuffer;
	39
	40
1c79356b A	41	UInt32 CheckExtents( void *extents, UInt32 blocks, Boolean isHFSPlus );
	42	OSErr DeleteExtents( ExtendedVCB *vcb, UInt32 fileNumber, Boolean isHFSPlus );
	43	OSErr MoveExtents( ExtendedVCB *vcb, UInt32 srcFileID, UInt32 destFileID, Boolean isHFSPlus );
	44	void CopyCatalogNodeInfo( CatalogRecord src, CatalogRecord dest );
	45	void CopyBigCatalogNodeInfo( CatalogRecord src, CatalogRecord dest );
1c79356b	46	void CopyExtentInfo( ExtentKey key, ExtentRecord data, ExtentsRecBuffer *buffer, UInt16 bufferCount );
1c79356b A	47
	48
	49
	50	OSErr ExchangeFileIDs( ExtendedVCB *vcb, ConstUTF8Param srcName, ConstUTF8Param destName, HFSCatalogNodeID srcID, HFSCatalogNodeID destID, UInt32 srcHint, UInt32 destHint )
	51	{
9bccf70c A	52	CatalogKey srcKey; // 518 bytes
9bccf70c A	53	CatalogKey destKey; // 518 bytes
1c79356b	54	CatalogRecord srcData; // 520 bytes
1c79356b A	55	CatalogRecord destData; // 520 bytes
1c79356b A	56	CatalogRecord swapData; // 520 bytes
9bccf70c A	57	SInt16 numSrcExtentBlocks;
	58	SInt16 numDestExtentBlocks;
	59	OSErr err;
	60	Boolean isHFSPlus = ( vcb->vcbSigWord == kHFSPlusSigWord );
1c79356b A	61
	62	TrashCatalogIterator(vcb, srcID); // invalidate any iterators for this parentID
	63	TrashCatalogIterator(vcb, destID); // invalidate any iterators for this parentID
	64
0b4e3aa0	65	err = BuildCatalogKeyUTF8(vcb, srcID, srcName, kUndefinedStrLen, &srcKey, NULL);
1c79356b A	66	ReturnIfError(err);
1c79356b A	67
0b4e3aa0	68	err = BuildCatalogKeyUTF8(vcb, destID, destName, kUndefinedStrLen, &destKey, NULL);
1c79356b A	69	ReturnIfError(err);
	70
	71	if ( isHFSPlus )
	72	{
	73	//-- Step 1: Check the catalog nodes for extents
	74
	75	//-- locate the source file, test for extents in extent file, and copy the cat record for later
	76	err = LocateCatalogNodeByKey( vcb, srcHint, &srcKey, &srcData, &srcHint );
	77	ReturnIfError( err );
	78
	79	if ( srcData.recordType != kHFSPlusFileRecord )
	80	return( cmFThdDirErr ); // Error "cmFThdDirErr = it is a directory"
	81
	82	//-- Check if there are any extents in the source file
	83