bsd/hfs/hfscommon/headers/CatalogPrivate.h

   1 /*
   2  * Copyright (c) 2000, 2002 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
   7  *
   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
  17  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  18  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  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.
  22  *
  23  * @APPLE_LICENSE_HEADER_END@
  24  */
  25 /*
  26         File:           CatalogPrivate.h
  27
  28         Contains:       Private Catalog Manager interfaces.
  29
  30         Version:        HFS Plus 1.0
  31
  32         Copyright:      © 1997-1998 by Apple Computer, Inc., all rights reserved.
  33
  34         File Ownership:
  35
  36                 DRI:                            Don Brady
  37
  38                 Other Contact:          xxx put other contact here xxx
  39
  40                 Technology:                     xxx put technology here xxx
  41
  42         Writers:
  43
  44                 (JL)    Jim Luther
  45                 (msd)   Mark Day
  46                 (DSH)   Deric Horn
  47                 (djb)   Don Brady
  48
  49         Change History (most recent first):
  50           <MacOSX>       11/10/98       djb             Remove obsolete PrepareInputName prototype;
  51           <MacOSX>        4/6/98        djb             Added lock data stuctures and ReleaseCatalogIterator prototype;
  52           <MacOSX>        4/6/98        djb             Removed CatalogDataCache since its no longer used.
  53           <MacOSX>        4/2/98        djb             InvalidateCatalogNodeCache does nothing under MacOS X.
  54           <MacOSX>       3/31/98        djb             Sync up with final HFSVolumes.h header file.
  55
  56           <CS10>        11/20/97        djb             Radar #2002357. Fixing retry mechanism.
  57            <CS9>        11/17/97        djb             PrepareInputName routine now returns an error.
  58            <CS8>        11/13/97        djb             Radar #1683572. Move CatalogIterator to this file from
  59                                                                         FileMgrInternal.i. Double size of short unicode name.
  60            <CS7>        10/31/97        JL              #2000184 - Changed prototypes for CreateFileThreadID and
  61                                                                         ExchangeFiles.
  62            <CS6>        10/17/97        msd             In CatalogCacheGlobals, add room for a single UniStr255 so
  63                                                                         catalog iterators can step over long Unicode names.
  64            <CS5>        10/17/97        djb             Add ConvertInputNameToUnicode for Catalog Create/Rename.
  65            <CS4>         10/1/97        djb             Change catalog iterator implementation.
  66            <CS3>         7/16/97        DSH             FilesInternal.i renamed FileMgrInternal.i to avoid name
  67                                                                         collision
  68            <CS2>         6/24/97        djb             Add LocateCatalogNodeByMangledName routine.
  69            <CS1>         6/24/97        djb             first checked in
  70 */
  71
  72 #ifndef __CATALOGPRIVATE__
  73 #define __CATALOGPRIVATE__
  74
  75 #include <sys/appleapiopts.h>
  76
  77 #ifdef KERNEL
  78 #ifdef __APPLE_API_PRIVATE
  79
  80 #include "../../hfs_format.h"
  81
  82 #include        "FileMgrInternal.h"
  83 #include        "BTreesInternal.h"
  84
  85         #include <sys/lock.h>
  86
  87 // private catalog data cache
  88
  89
  90
  91 enum {
  92         kCatalogIteratorCount = 16              // total number of Catalog iterators (shared by all HFS/HFS Plus volumes)
  93 };
  94
  95
  96 // Catalog Iterator Name Types
  97 enum {
  98         kShortPascalName,
  99         kShortUnicodeName,
 100         kLongUnicodeName        // non-local name
 101 };
 102
 103
 104 // short unicode name (used by CatalogIterator)
 105 struct UniStr63 {
 106         UInt16          length;                 /* number of unicode characters */
 107         UniChar         unicode[63];            /* unicode characters */
 108 };
 109 typedef struct UniStr63 UniStr63;
 110
 111
 112 struct CatalogIterator
 113 {
 114         struct CatalogIterator *nextMRU;        // next iterator in MRU order
 115         struct CatalogIterator *nextLRU;        // next iterator in LRU order
 116
 117         ExtendedVCB             *volume;
 118         SInt16                  currentIndex;
 119         SInt16                  reserved;
 120         UInt32                  currentOffset;
 121         UInt32                  nextOffset;
 122         HFSCatalogNodeID        folderID;
 123
 124         UInt32                  btreeNodeHint;  // node the key was last seen in
 125         UInt16                  btreeIndexHint; // index the key was last seen at
 126         UInt16                  nameType;       // { 0 = Pascal, 1 = Unicode, 3 = long name}
 127         HFSCatalogNodeID        parentID;       // parent folder ID
 128         union
 129         {
 130                 Str31           pascalName;
 131                 UniStr63        unicodeName;
 132                 HFSUniStr255 *  longNamePtr;
 133         } folderName;
 134
 135         struct lock__bsd__      iterator_lock;
 136 };
 137 typedef struct CatalogIterator CatalogIterator;
 138
 139
 140 struct CatalogCacheGlobals {
 141         UInt32                  iteratorCount;  // Number of iterators in cache
 142         CatalogIterator *       mru;
 143         CatalogIterator *       lru;
 144         UInt32                  reserved;
 145         HFSUniStr255            longName;       // used by a single kLongUnicodeName iterator
 146
 147         simple_lock_data_t      simplelock;
 148 };
 149 typedef struct CatalogCacheGlobals CatalogCacheGlobals;
 150
 151
 152 //
 153 // Private Catalog Manager Routines (for use only by Catalog Manager, CatSearch and FileID Services)
 154 //
 155
 156
 157 extern  OSErr   LocateCatalogNode(      const ExtendedVCB *volume, HFSCatalogNodeID folderID, const CatalogName *name,
 158                                                                         UInt32 hint, CatalogKey *key, CatalogRecord *data, UInt32 *newHint);
 159
 160 extern OSErr    LocateCatalogNodeByKey ( const ExtendedVCB *volume, UInt32 hint, CatalogKey *keyPtr,
 161                                                                                  CatalogRecord *dataPtr, UInt32 *newHint );
 162
 163 extern OSErr    LocateCatalogRecord( const ExtendedVCB *volume, HFSCatalogNodeID folderID, const CatalogName *name,
 164                                                                          UInt32 hint, CatalogKey *keyPtr, CatalogRecord *dataPtr, UInt32 *newHint);
 165
 166 extern OSErr    LocateCatalogNodeWithRetry ( const ExtendedVCB *volume, HFSCatalogNodeID folderID, ConstStr31Param pascalName,
 167                                                                                          CatalogName *unicodeName, UInt32 hint, CatalogKey *keyPtr, CatalogRecord *dataPtr,
 168                                                                                          UInt32 *newHint );
 169 extern OSErr    FlushCatalog( ExtendedVCB *volume);
 170
 171
 172 extern void             ConvertInputNameToUnicode(ConstStr31Param name, TextEncoding encodingHint,
 173                                                                                   TextEncoding *actualEncoding, CatalogName *catalogName);
 174
 175 extern  void    BuildCatalogKey( HFSCatalogNodeID parentID, const CatalogName *name, Boolean isHFSPlus,
 176                                                                  CatalogKey *key);
 177
 178 extern  OSErr   BuildCatalogKeyUTF8(ExtendedVCB *volume, HFSCatalogNodeID parentID, const char *name,
 179                                     UInt32 length, CatalogKey *key, UInt32 *textEncoding);
 180
 181 extern void             CopyCatalogName( const CatalogName *srcName, CatalogName *dstName, Boolean isHFSPLus);
 182
 183 extern OSErr    ResolveFileID( ExtendedVCB *vcb, HFSCatalogNodeID fileID, HFSCatalogNodeID *parentID, Str31 name );
 184
 185 #if 0
 186 extern OSErr    CreateFileThreadID( FIDParam *filePB, WDCBRecPtr *wdcbPtr );
 187
 188 extern OSErr    ExchangeFiles( FIDParam *filePB, WDCBRecPtr *wdcbPtr );
 189 #endif
 190
 191 extern  void    UpdateCatalogName( ConstStr31Param srcName, Str31 destName );
 192
 193
 194 // Catalog Iterator Routines
 195
 196 extern CatalogIterator* GetCatalogIterator(ExtendedVCB *volume, HFSCatalogNodeID folderID, UInt32 offset);
 197
 198 extern OSErr    ReleaseCatalogIterator( CatalogIterator *catalogIterator );
 199
 200 extern void             TrashCatalogIterator( const ExtendedVCB *volume, HFSCatalogNodeID folderID );
 201
 202 void                    AgeCatalogIterator( CatalogIterator *catalogIterator );
 203
 204 extern void             UpdateBtreeIterator( const CatalogIterator *catalogIterator, BTreeIterator *btreeIterator );
 205
 206 extern void             UpdateCatalogIterator( const BTreeIterator *btreeIterator, CatalogIterator *catalogIterator );
 207
 208
 209 #endif /* __APPLE_API_PRIVATE */
 210 #endif /* KERNEL */
 211 #endif //__CATALOGPRIVATE__