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

/*
 * Copyright (c) 2000-2002 Apple Computer, Inc. All rights reserved.
 *
 * @APPLE_LICENSE_HEADER_START@
 * 
 * The contents of this file constitute Original Code as defined in and
 * are subject to the Apple Public Source License Version 1.1 (the
 * "License").  You may not use this file except in compliance with the
 * License.  Please obtain a copy of the License at
 * http://www.apple.com/publicsource and read it before using this file.
 * 
 * This 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 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	/*
9bccf70c	2	* Copyright (c) 2000-2002 Apple Computer, Inc. All rights reserved.
1c79356b A	3	*
	4	* @APPLE_LICENSE_HEADER_START@
	5	*
	6	* The contents of this file constitute Original Code as defined in and
	7	* are subject to the Apple Public Source License Version 1.1 (the
	8	* "License"). You may not use this file except in compliance with the
	9	* License. Please obtain a copy of the License at
	10	* http://www.apple.com/publicsource and read it before using this file.
	11	*
	12	* This Original Code and all software distributed under the License are
	13	* distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
	14	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
	15	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
	16	* FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
	17	* License for the specific language governing rights and limitations
	18	* under the License.
	19	*
	20	* @APPLE_LICENSE_HEADER_END@
	21	*/
1c79356b A	22
	23	#include "../../hfs_macos_defs.h"
	24	#include "../../hfs_format.h"
	25
	26	#include "../headers/FileMgrInternal.h"
	27	#include "../headers/HFSUnicodeWrappers.h"
	28	#include "../headers/CatalogPrivate.h"
	29
	30
	31	struct ExtentsRecBuffer {
9bccf70c	32	ExtentKey extentKey;
1c79356b A	33	ExtentRecord extentData;
	34	};
	35	typedef struct ExtentsRecBuffer ExtentsRecBuffer;
	36
	37
1c79356b A	38	UInt32 CheckExtents( void *extents, UInt32 blocks, Boolean isHFSPlus );
	39	OSErr DeleteExtents( ExtendedVCB *vcb, UInt32 fileNumber, Boolean isHFSPlus );
	40	OSErr MoveExtents( ExtendedVCB *vcb, UInt32 srcFileID, UInt32 destFileID, Boolean isHFSPlus );
	41	void CopyCatalogNodeInfo( CatalogRecord src, CatalogRecord dest );
	42	void CopyBigCatalogNodeInfo( CatalogRecord src, CatalogRecord dest );
1c79356b	43	void CopyExtentInfo( ExtentKey key, ExtentRecord data, ExtentsRecBuffer *buffer, UInt16 bufferCount );
1c79356b A	44
	45
	46
	47	OSErr ExchangeFileIDs( ExtendedVCB *vcb, ConstUTF8Param srcName, ConstUTF8Param destName, HFSCatalogNodeID srcID, HFSCatalogNodeID destID, UInt32 srcHint, UInt32 destHint )
	48	{
9bccf70c A	49	CatalogKey srcKey; // 518 bytes
9bccf70c A	50	CatalogKey destKey; // 518 bytes
1c79356b	51	CatalogRecord srcData; // 520 bytes
1c79356b A	52	CatalogRecord destData; // 520 bytes
1c79356b A	53	CatalogRecord swapData; // 520 bytes
9bccf70c A	54	SInt16 numSrcExtentBlocks;
	55	SInt16 numDestExtentBlocks;
	56	OSErr err;
	57	Boolean isHFSPlus = ( vcb->vcbSigWord == kHFSPlusSigWord );
1c79356b A	58
	59	TrashCatalogIterator(vcb, srcID); // invalidate any iterators for this parentID
	60	TrashCatalogIterator(vcb, destID); // invalidate any iterators for this parentID
	61
0b4e3aa0	62	err = BuildCatalogKeyUTF8(vcb, srcID, srcName, kUndefinedStrLen, &srcKey, NULL);
1c79356b A	63	ReturnIfError(err);
1c79356b A	64
0b4e3aa0	65	err = BuildCatalogKeyUTF8(vcb, destID, destName, kUndefinedStrLen, &destKey, NULL);
1c79356b A	66	ReturnIfError(err);
	67
	68	if ( isHFSPlus )
	69	{
	70	//-- Step 1: Check the catalog nodes for extents
	71
	72	//-- locate the source file, test for extents in extent file, and copy the cat record for later
	73	err = LocateCatalogNodeByKey( vcb, srcHint, &srcKey, &srcData, &srcHint );
	74	ReturnIfError( err );
	75
	76	if ( srcData.recordType != kHFSPlusFileRecord )
	77	return( cmFThdDirErr ); // Error "cmFThdDirErr = it is a directory"
	78
	79	//-- Check if there are any extents in the source file
	80