memory/registry.c

   1 /*
   2  * Registry management
   3  *
   4  * Copyright (C) 1999 Alexandre Julliard
   5  *
   6  * Based on misc/registry.c code
   7  * Copyright (C) 1996 Marcus Meissner
   8  * Copyright (C) 1998 Matthew Becker
   9  * Copyright (C) 1999 Sylvain St-Germain
  10  *
  11  * This file is concerned about handle management and interaction with the Wine server.
  12  * Registry file I/O is in misc/registry.c.
  13  */
  14
  15 #include <stdlib.h>
  16 #include <stdio.h>
  17 #include <unistd.h>
  18
  19 #include "winbase.h"
  20 #include "winreg.h"
  21 #include "winerror.h"
  22 #include "wine/winbase16.h"
  23 #include "wine/unicode.h"
  24 #include "heap.h"
  25 #include "server.h"
  26 #include "debugtools.h"
  27
  28 DEFAULT_DEBUG_CHANNEL(reg);
  29
  30
  31 /* Unicode->Ansi conversion without string delimiters */
  32 static LPSTR memcpyWtoA( LPSTR dst, LPCWSTR src, INT n )
  33 {
  34     LPSTR p = dst;
  35     while (n-- > 0) *p++ = (CHAR)*src++;
  36     return dst;
  37 }
  38
  39 /* check if value type needs string conversion (Ansi<->Unicode) */
  40 static inline int is_string( DWORD type )
  41 {
  42     return (type == REG_SZ) || (type == REG_EXPAND_SZ) || (type == REG_MULTI_SZ);
  43 }
  44
  45 /* do a server call without setting the last error code */
  46 static inline int reg_server_call( enum request req )
  47 {
  48     unsigned int res = server_call_noerr( req );
  49     if (res) res = RtlNtStatusToDosError(res);
  50     return res;
  51 }
  52
  53 /******************************************************************************
  54  *           RegCreateKeyExW   [ADVAPI32.131]
  55  *
  56  * PARAMS
  57  *    hkey       [I] Handle of an open key
  58  *    name       [I] Address of subkey name
  59  *    reserved   [I] Reserved - must be 0
  60  *    class      [I] Address of class string
  61  *    options    [I] Special options flag
  62  *    access     [I] Desired security access
  63  *    sa         [I] Address of key security structure
  64  *    retkey     [O] Address of buffer for opened handle
  65  *    dispos     [O] Receives REG_CREATED_NEW_KEY or REG_OPENED_EXISTING_KEY
  66  *
  67  * NOTES
  68  *  in case of failing retkey remains untouched
  69  */
  70 DWORD WINAPI RegCreateKeyExW( HKEY hkey, LPCWSTR name, DWORD reserved, LPWSTR class,
  71                               DWORD options, REGSAM access, SECURITY_ATTRIBUTES *sa,
  72                               LPHKEY retkey, LPDWORD dispos )
  73 {
  74     OBJECT_ATTRIBUTES attr;
  75     UNICODE_STRING nameW, classW;
  76
  77     if (reserved) return ERROR_INVALID_PARAMETER;
  78     if (!(access & KEY_ALL_ACCESS) || (access & ~KEY_ALL_ACCESS)) return ERROR_ACCESS_DENIED;
  79
  80     attr.Length = sizeof(attr);
  81     attr.RootDirectory = hkey;
  82     attr.ObjectName = &nameW;
  83     attr.Attributes = 0;
  84     attr.SecurityDescriptor = NULL;
  85     attr.SecurityQualityOfService = NULL;
  86     RtlInitUnicodeString( &nameW, name );
  87     RtlInitUnicodeString( &classW, class );
  88
  89     return RtlNtStatusToDosError( NtCreateKey( retkey, access, &attr, 0,
  90                                                &classW, options, dispos ) );
  91 }
  92
  93
  94 /******************************************************************************
  95  *           RegCreateKeyExA   [ADVAPI32.130]
  96  */
  97 DWORD WINAPI RegCreateKeyExA( HKEY hkey, LPCSTR name, DWORD reserved, LPSTR class,
  98                               DWORD options, REGSAM access, SECURITY_ATTRIBUTES *sa,
  99                               LPHKEY retkey, LPDWORD dispos )
 100 {
 101     OBJECT_ATTRIBUTES attr;
 102     UNICODE_STRING nameW, classW;
 103     ANSI_STRING nameA, classA;
 104     NTSTATUS status;
 105
 106     if (reserved) return ERROR_INVALID_PARAMETER;
 107     if (!(access & KEY_ALL_ACCESS) || (access & ~KEY_ALL_ACCESS)) return ERROR_ACCESS_DENIED;
 108
 109     attr.Length = sizeof(attr);
 110     attr.RootDirectory = hkey;
 111     attr.ObjectName = &nameW;
 112     attr.Attributes = 0;
 113     attr.SecurityDescriptor = NULL;
 114     attr.SecurityQualityOfService = NULL;
 115     RtlInitAnsiString( &nameA, name );
 116     RtlInitAnsiString( &classA, class );
 117
 118     /* FIXME: should use Unicode buffer in TEB */
 119     if (!(status = RtlAnsiStringToUnicodeString( &nameW, &nameA, TRUE )))
 120     {
 121         if (!(status = RtlAnsiStringToUnicodeString( &classW, &classA, TRUE )))
 122         {
 123             status = NtCreateKey( retkey, access, &attr, 0, &classW, options, dispos );
 124             RtlFreeUnicodeString( &classW );
 125         }
 126         RtlFreeUnicodeString( &nameW );
 127     }
 128     return RtlNtStatusToDosError( status );
 129 }
 130
 131
 132 /******************************************************************************
 133  *           RegCreateKeyW   [ADVAPI32.132]
 134  */
 135 DWORD WINAPI RegCreateKeyW( HKEY hkey, LPCWSTR name, LPHKEY retkey )
 136 {
 137     /* FIXME: previous implementation converted ERROR_INVALID_HANDLE to ERROR_BADKEY, */
 138     /* but at least my version of NT (4.0 SP5) doesn't do this.  -- AJ */
 139     return RegCreateKeyExW( hkey, name, 0, NULL, REG_OPTION_NON_VOLATILE,
 140                             KEY_ALL_ACCESS, NULL, retkey, NULL );
 141 }
 142
 143
 144 /******************************************************************************
 145  *           RegCreateKeyA   [ADVAPI32.129]
 146  */
 147 DWORD WINAPI RegCreateKeyA( HKEY hkey, LPCSTR name, LPHKEY retkey )
 148 {
 149     return RegCreateKeyExA( hkey, name, 0, NULL, REG_OPTION_NON_VOLATILE,
 150                             KEY_ALL_ACCESS, NULL, retkey, NULL );
 151 }
 152
 153
 154
 155 /******************************************************************************
 156  *           RegOpenKeyExW   [ADVAPI32.150]
 157  *
 158  * Opens the specified key
 159  *
 160  * Unlike RegCreateKeyEx, this does not create the key if it does not exist.
 161  *
 162  * PARAMS
 163  *    hkey       [I] Handle of open key
 164  *    name       [I] Name of subkey to open
 165  *    reserved   [I] Reserved - must be zero
 166  *    access     [I] Security access mask
 167  *    retkey     [O] Handle to open key
 168  *
 169  * RETURNS
 170  *    Success: ERROR_SUCCESS
 171  *    Failure: Error code
 172  *
 173  * NOTES
 174  *  in case of failing is retkey = 0
 175  */
 176 DWORD WINAPI RegOpenKeyExW( HKEY hkey, LPCWSTR name, DWORD reserved, REGSAM access, LPHKEY retkey )
 177 {
 178     OBJECT_ATTRIBUTES attr;
 179     UNICODE_STRING nameW;
 180
 181     attr.Length = sizeof(attr);
 182     attr.RootDirectory = hkey;
 183     attr.ObjectName = &nameW;
 184     attr.Attributes = 0;
 185     attr.SecurityDescriptor = NULL;
 186     attr.SecurityQualityOfService = NULL;
 187     RtlInitUnicodeString( &nameW, name );
 188     return RtlNtStatusToDosError( NtOpenKey( retkey, access, &attr ) );
 189 }
 190
 191
 192 /******************************************************************************
 193  *           RegOpenKeyExA   [ADVAPI32.149]
 194  */
 195 DWORD WINAPI RegOpenKeyExA( HKEY hkey, LPCSTR name, DWORD reserved, REGSAM access, LPHKEY retkey )
 196 {
 197     OBJECT_ATTRIBUTES attr;
 198     UNICODE_STRING nameW;
 199     STRING nameA;
 200     NTSTATUS status;
 201
 202     attr.Length = sizeof(attr);
 203     attr.RootDirectory = hkey;
 204     attr.ObjectName = &nameW;
 205     attr.Attributes = 0;
 206     attr.SecurityDescriptor = NULL;
 207     attr.SecurityQualityOfService = NULL;
 208
 209     RtlInitAnsiString( &nameA, name );
 210     /* FIXME: should use Unicode buffer in TEB */
 211     if (!(status = RtlAnsiStringToUnicodeString( &nameW, &nameA, TRUE )))
 212     {
 213         status = NtOpenKey( retkey, access, &attr );
 214         RtlFreeUnicodeString( &nameW );
 215     }
 216     return RtlNtStatusToDosError( status );
 217 }
 218
 219
 220 /******************************************************************************
 221  *           RegOpenKeyW   [ADVAPI32.151]
 222  *
 223  * PARAMS
 224  *    hkey    [I] Handle of open key
 225  *    name    [I] Address of name of subkey to open
 226  *    retkey  [O] Handle to open key
 227  *
 228  * RETURNS
 229  *    Success: ERROR_SUCCESS
 230  *    Failure: Error code
 231  *
 232  * NOTES
 233  *  in case of failing is retkey = 0
 234  */
 235 DWORD WINAPI RegOpenKeyW( HKEY hkey, LPCWSTR name, LPHKEY retkey )
 236 {
 237     return RegOpenKeyExW( hkey, name, 0, KEY_ALL_ACCESS, retkey );
 238 }
 239
 240
 241 /******************************************************************************
 242  *           RegOpenKeyA   [ADVAPI32.148]
 243  */
 244 DWORD WINAPI RegOpenKeyA( HKEY hkey, LPCSTR name, LPHKEY retkey )
 245 {
 246     return RegOpenKeyExA( hkey, name, 0, KEY_ALL_ACCESS, retkey );
 247 }
 248
 249
 250 /******************************************************************************
 251  *           RegOpenCurrentUser   [ADVAPI32]
 252  * FIXME: This function is supposed to retrieve a handle to the
 253  * HKEY_CURRENT_USER for the user the current thread is impersonating.
 254  * Since Wine does not currently allow threads to impersonate other users,
 255  * this stub should work fine.
 256  */
 257 DWORD WINAPI RegOpenCurrentUser( REGSAM access, PHKEY retkey )
 258 {
 259     return RegOpenKeyExA( HKEY_CURRENT_USER, "", 0, access, retkey );
 260 }
 261
 262
 263
 264 /******************************************************************************
 265  *           RegEnumKeyExW   [ADVAPI32.139]
 266  *
 267  * PARAMS
 268  *    hkey         [I] Handle to key to enumerate
 269  *    index        [I] Index of subkey to enumerate
 270  *    name         [O] Buffer for subkey name
 271  *    name_len     [O] Size of subkey buffer
 272  *    reserved     [I] Reserved
 273  *    class        [O] Buffer for class string
 274  *    class_len    [O] Size of class buffer
 275  *    ft           [O] Time key last written to
 276  */
 277 DWORD WINAPI RegEnumKeyExW( HKEY hkey, DWORD index, LPWSTR name, LPDWORD name_len,
 278                             LPDWORD reserved, LPWSTR class, LPDWORD class_len, FILETIME *ft )
 279 {
 280     NTSTATUS status;
 281     char buffer[256], *buf_ptr = buffer;
 282     KEY_NODE_INFORMATION *info = (KEY_NODE_INFORMATION *)buffer;
 283     DWORD total_size;
 284
 285     TRACE( "(0x%x,%ld,%p,%p(%ld),%p,%p,%p,%p)\n", hkey, index, name, name_len,
 286            name_len ? *name_len : -1, reserved, class, class_len, ft );
 287
 288     if (reserved) return ERROR_INVALID_PARAMETER;
 289
 290     status = NtEnumerateKey( hkey, index, KeyNodeInformation,
 291                              buffer, sizeof(buffer), &total_size );
 292
 293     while (status == STATUS_BUFFER_OVERFLOW)
 294     {
 295         /* retry with a dynamically allocated buffer */
 296         if (buf_ptr != buffer) HeapFree( GetProcessHeap(), 0, buf_ptr );
 297         if (!(buf_ptr = HeapAlloc( GetProcessHeap(), 0, total_size )))
 298             return ERROR_NOT_ENOUGH_MEMORY;
 299         info = (KEY_NODE_INFORMATION *)buf_ptr;
 300         status = NtEnumerateKey( hkey, index, KeyNodeInformation,
 301                                  buf_ptr, total_size, &total_size );
 302     }
 303
 304     if (!status)
 305     {
 306         DWORD len = info->NameLength / sizeof(WCHAR);
 307         DWORD cls_len = info->ClassLength / sizeof(WCHAR);
 308
 309         if (ft) *ft = info->LastWriteTime;
 310
 311         if (len >= *name_len || (class_len && (cls_len >= *class_len)))
 312             status = STATUS_BUFFER_OVERFLOW;
 313         else
 314         {
 315             *name_len = len;
 316             memcpy( name, info->Name, info->NameLength );
 317             name[len] = 0;
 318             if (class_len)
 319             {
 320                 *class_len = cls_len;
 321                 if (class)
 322                 {
 323                     memcpy( class, buf_ptr + info->ClassOffset, info->ClassLength );
 324                     class[cls_len] = 0;
 325                 }
 326             }
 327         }
 328     }
 329
 330     if (buf_ptr != buffer) HeapFree( GetProcessHeap(), 0, buf_ptr );
 331     return RtlNtStatusToDosError( status );
 332 }
 333
 334
 335 /******************************************************************************
 336  *           RegEnumKeyExA   [ADVAPI32.138]
 337  */
 338 DWORD WINAPI RegEnumKeyExA( HKEY hkey, DWORD index, LPSTR name, LPDWORD name_len,
 339                             LPDWORD reserved, LPSTR class, LPDWORD class_len, FILETIME *ft )
 340 {
 341     NTSTATUS status;
 342     char buffer[256], *buf_ptr = buffer;
 343     KEY_NODE_INFORMATION *info = (KEY_NODE_INFORMATION *)buffer;
 344     DWORD total_size;
 345
 346     TRACE( "(0x%x,%ld,%p,%p(%ld),%p,%p,%p,%p)\n", hkey, index, name, name_len,
 347            name_len ? *name_len : -1, reserved, class, class_len, ft );
 348
 349     if (reserved) return ERROR_INVALID_PARAMETER;
 350
 351     status = NtEnumerateKey( hkey, index, KeyNodeInformation,
 352                              buffer, sizeof(buffer), &total_size );
 353
 354     while (status == STATUS_BUFFER_OVERFLOW)
 355     {
 356         /* retry with a dynamically allocated buffer */
 357         if (buf_ptr != buffer) HeapFree( GetProcessHeap(), 0, buf_ptr );
 358         if (!(buf_ptr = HeapAlloc( GetProcessHeap(), 0, total_size )))
 359             return ERROR_NOT_ENOUGH_MEMORY;
 360         info = (KEY_NODE_INFORMATION *)buf_ptr;
 361         status = NtEnumerateKey( hkey, index, KeyNodeInformation,
 362                                  buf_ptr, total_size, &total_size );
 363     }
 364
 365     if (!status)
 366     {
 367         DWORD len = WideCharToMultiByte( CP_ACP, 0, info->Name, info->NameLength/sizeof(WCHAR),
 368                                          NULL, 0, NULL, NULL );
 369         DWORD cls_len = WideCharToMultiByte( CP_ACP, 0, (WCHAR *)(buf_ptr + info->ClassOffset),
 370                                              info->ClassLength / sizeof(WCHAR),
 371                                              NULL, 0, NULL, NULL );
 372
 373         if (ft) *ft = info->LastWriteTime;
 374
 375         if (len >= *name_len || (class_len && (cls_len >= *class_len)))
 376             status = STATUS_BUFFER_OVERFLOW;
 377         else
 378         {
 379             *name_len = len;
 380             WideCharToMultiByte( CP_ACP, 0, info->Name, info->NameLength/sizeof(WCHAR),
 381                                  name, len, NULL, NULL );
 382             name[len] = 0;
 383             if (class_len)
 384             {
 385                 *class_len = cls_len;
 386                 if (class)
 387                 {
 388                     WideCharToMultiByte( CP_ACP, 0, (WCHAR *)(buf_ptr + info->ClassOffset),
 389                                          info->ClassLength / sizeof(WCHAR),
 390                                          class, cls_len, NULL, NULL );
 391                     class[cls_len] = 0;
 392                 }
 393             }
 394         }
 395     }
 396
 397     if (buf_ptr != buffer) HeapFree( GetProcessHeap(), 0, buf_ptr );
 398     return RtlNtStatusToDosError( status );
 399 }
 400
 401
 402 /******************************************************************************
 403  *           RegEnumKeyW   [ADVAPI32.140]
 404  */
 405 DWORD WINAPI RegEnumKeyW( HKEY hkey, DWORD index, LPWSTR name, DWORD name_len )
 406 {
 407     return RegEnumKeyExW( hkey, index, name, &name_len, NULL, NULL, NULL, NULL );
 408 }
 409
 410
 411 /******************************************************************************
 412  *           RegEnumKeyA   [ADVAPI32.137]
 413  */
 414 DWORD WINAPI RegEnumKeyA( HKEY hkey, DWORD index, LPSTR name, DWORD name_len )
 415 {
 416     return RegEnumKeyExA( hkey, index, name, &name_len, NULL, NULL, NULL, NULL );
 417 }
 418
 419
 420 /******************************************************************************
 421  *           RegQueryInfoKeyW   [ADVAPI32.153]
 422  *
 423  * PARAMS
 424  *    hkey       [I] Handle to key to query
 425  *    class      [O] Buffer for class string
 426  *    class_len  [O] Size of class string buffer
 427  *    reserved   [I] Reserved
 428  *    subkeys    [O] Buffer for number of subkeys
 429  *    max_subkey [O] Buffer for longest subkey name length
 430  *    max_class  [O] Buffer for longest class string length
 431  *    values     [O] Buffer for number of value entries
 432  *    max_value  [O] Buffer for longest value name length
 433  *    max_data   [O] Buffer for longest value data length
 434  *    security   [O] Buffer for security descriptor length
 435  *    modif      [O] Modification time
 436  *
 437  * - win95 allows class to be valid and class_len to be NULL
 438  * - winnt returns ERROR_INVALID_PARAMETER if class is valid and class_len is NULL
 439  * - both allow class to be NULL and class_len to be NULL
 440  * (it's hard to test validity, so test !NULL instead)
 441  */
 442 DWORD WINAPI RegQueryInfoKeyW( HKEY hkey, LPWSTR class, LPDWORD class_len, LPDWORD reserved,
 443                                LPDWORD subkeys, LPDWORD max_subkey, LPDWORD max_class,
 444                                LPDWORD values, LPDWORD max_value, LPDWORD max_data,
 445                                LPDWORD security, FILETIME *modif )
 446 {
 447     NTSTATUS status;
 448     char buffer[256], *buf_ptr = buffer;
 449     KEY_FULL_INFORMATION *info = (KEY_FULL_INFORMATION *)buffer;
 450     DWORD total_size;
 451
 452     TRACE( "(0x%x,%p,%ld,%p,%p,%p,%p,%p,%p,%p,%p)\n", hkey, class, class_len ? *class_len : 0,
 453            reserved, subkeys, max_subkey, values, max_value, max_data, security, modif );
 454
 455     if (class && !class_len && !(GetVersion() & 0x80000000 /*NT*/))
 456         return ERROR_INVALID_PARAMETER;
 457
 458     status = NtQueryKey( hkey, KeyFullInformation, buffer, sizeof(buffer), &total_size );
 459
 460     if (class)
 461     {
 462         /* retry with a dynamically allocated buffer */
 463         while (status == STATUS_BUFFER_OVERFLOW)
 464         {
 465             if (buf_ptr != buffer) HeapFree( GetProcessHeap(), 0, buf_ptr );
 466             if (!(buf_ptr = HeapAlloc( GetProcessHeap(), 0, total_size )))
 467                 return ERROR_NOT_ENOUGH_MEMORY;
 468             info = (KEY_FULL_INFORMATION *)buf_ptr;
 469             status = NtQueryKey( hkey, KeyFullInformation, buf_ptr, total_size, &total_size );
 470         }
 471
 472         if (!status)
 473         {
 474             if (class_len && (info->ClassLength/sizeof(WCHAR) + 1 > *class_len))
 475             {
 476                 status = STATUS_BUFFER_OVERFLOW;
 477             }
 478             else
 479             {
 480                 memcpy( class, buf_ptr + info->ClassOffset, info->ClassLength );
 481                 class[info->ClassLength/sizeof(WCHAR)] = 0;
 482             }
 483         }
 484     }
 485
 486     if (!status || status == STATUS_BUFFER_OVERFLOW)
 487     {
 488         if (class_len) *class_len = info->ClassLength / sizeof(WCHAR);
 489         if (subkeys) *subkeys = info->SubKeys;
 490         if (max_subkey) *max_subkey = info->MaxNameLen;
 491         if (max_class) *max_class = info->MaxClassLen;
 492         if (values) *values = info->Values;
 493         if (max_value) *max_value = info->MaxValueNameLen;
 494         if (max_data) *max_data = info->MaxValueDataLen;
 495         if (modif) *modif = info->LastWriteTime;
 496     }
 497
 498     if (buf_ptr != buffer) HeapFree( GetProcessHeap(), 0, buf_ptr );
 499     return RtlNtStatusToDosError( status );
 500 }
 501
 502
 503 /******************************************************************************
 504  *           RegQueryInfoKeyA   [ADVAPI32.152]
 505  */
 506 DWORD WINAPI RegQueryInfoKeyA( HKEY hkey, LPSTR class, LPDWORD class_len, LPDWORD reserved,
 507                                LPDWORD subkeys, LPDWORD max_subkey, LPDWORD max_class,
 508                                LPDWORD values, LPDWORD max_value, LPDWORD max_data,
 509                                LPDWORD security, FILETIME *modif )
 510 {
 511     NTSTATUS status;
 512     char buffer[256], *buf_ptr = buffer;
 513     KEY_FULL_INFORMATION *info = (KEY_FULL_INFORMATION *)buffer;
 514     DWORD total_size;
 515
 516     TRACE( "(0x%x,%p,%ld,%p,%p,%p,%p,%p,%p,%p,%p)\n", hkey, class, class_len ? *class_len : 0,
 517            reserved, subkeys, max_subkey, values, max_value, max_data, security, modif );
 518
 519     if (class && !class_len && !(GetVersion() & 0x80000000 /*NT*/))
 520         return ERROR_INVALID_PARAMETER;
 521
 522     status = NtQueryKey( hkey, KeyFullInformation, buffer, sizeof(buffer), &total_size );
 523
 524     if (class || class_len)
 525     {
 526         /* retry with a dynamically allocated buffer */
 527         while (status == STATUS_BUFFER_OVERFLOW)
 528         {
 529             if (buf_ptr != buffer) HeapFree( GetProcessHeap(), 0, buf_ptr );
 530             if (!(buf_ptr = HeapAlloc( GetProcessHeap(), 0, total_size )))
 531                 return ERROR_NOT_ENOUGH_MEMORY;
 532             info = (KEY_FULL_INFORMATION *)buf_ptr;
 533             status = NtQueryKey( hkey, KeyFullInformation, buf_ptr, total_size, &total_size );
 534         }
 535
 536         if (!status)
 537         {
 538             DWORD len = WideCharToMultiByte( CP_ACP, 0,
 539                                              (WCHAR *)(buf_ptr + info->ClassOffset),
 540                                              info->ClassLength/sizeof(WCHAR),
 541                                              NULL, 0, NULL, NULL );
 542             if (class_len)
 543             {
 544                 if (len + 1 > *class_len) status = STATUS_BUFFER_OVERFLOW;
 545                 *class_len = len;
 546             }
 547             if (class && !status)
 548             {
 549                 WideCharToMultiByte( CP_ACP, 0,
 550                                      (WCHAR *)(buf_ptr + info->ClassOffset),
 551                                      info->ClassLength/sizeof(WCHAR),
 552                                      class, len, NULL, NULL );
 553                 class[len] = 0;
 554             }
 555         }
 556     }
 557
 558     if (!status || status == STATUS_BUFFER_OVERFLOW)
 559     {
 560         if (subkeys) *subkeys = info->SubKeys;
 561         if (max_subkey) *max_subkey = info->MaxNameLen;
 562         if (max_class) *max_class = info->MaxClassLen;
 563         if (values) *values = info->Values;
 564         if (max_value) *max_value = info->MaxValueNameLen;
 565         if (max_data) *max_data = info->MaxValueDataLen;
 566         if (modif) *modif = info->LastWriteTime;
 567     }
 568
 569     if (buf_ptr != buffer) HeapFree( GetProcessHeap(), 0, buf_ptr );
 570     return RtlNtStatusToDosError( status );
 571 }
 572
 573
 574 /******************************************************************************
 575  *           RegCloseKey   [ADVAPI32.126]
 576  *
 577  * Releases the handle of the specified key
 578  *
 579  * PARAMS
 580  *    hkey [I] Handle of key to close
 581  *
 582  * RETURNS
 583  *    Success: ERROR_SUCCESS
 584  *    Failure: Error code
 585  */
 586 DWORD WINAPI RegCloseKey( HKEY hkey )
 587 {
 588     if (!hkey || hkey >= 0x80000000) return ERROR_SUCCESS;
 589     return RtlNtStatusToDosError( NtClose( hkey ) );
 590 }
 591
 592
 593 /******************************************************************************
 594  *           RegDeleteKeyW   [ADVAPI32.134]
 595  *
 596  * PARAMS
 597  *    hkey   [I] Handle to open key
 598  *    name   [I] Name of subkey to delete
 599  *
 600  * RETURNS
 601  *    Success: ERROR_SUCCESS
 602  *    Failure: Error code
 603  */
 604 DWORD WINAPI RegDeleteKeyW( HKEY hkey, LPCWSTR name )
 605 {
 606     DWORD ret;
 607     HKEY tmp;
 608
 609     if (!name || !*name) return NtDeleteKey( hkey );
 610     if (!(ret = RegOpenKeyExW( hkey, name, 0, 0, &tmp )))
 611     {
 612         ret = RtlNtStatusToDosError( NtDeleteKey( tmp ) );
 613         RegCloseKey( tmp );
 614     }
 615     return ret;
 616 }
 617
 618
 619 /******************************************************************************
 620  *           RegDeleteKeyA   [ADVAPI32.133]
 621  */
 622 DWORD WINAPI RegDeleteKeyA( HKEY hkey, LPCSTR name )
 623 {
 624     DWORD ret;
 625     HKEY tmp;
 626
 627     if (!name || !*name) return NtDeleteKey( hkey );
 628     if (!(ret = RegOpenKeyExA( hkey, name, 0, 0, &tmp )))
 629     {
 630         ret = RtlNtStatusToDosError( NtDeleteKey( tmp ) );
 631         RegCloseKey( tmp );
 632     }
 633     return ret;
 634 }
 635
 636
 637
 638 /******************************************************************************
 639  *           RegSetValueExW   [ADVAPI32.170]
 640  *
 641  * Sets the data and type of a value under a register key
 642  *
 643  * PARAMS
 644  *    hkey       [I] Handle of key to set value for
 645  *    name       [I] Name of value to set
 646  *    reserved   [I] Reserved - must be zero
 647  *    type       [I] Flag for value type
 648  *    data       [I] Address of value data
 649  *    count      [I] Size of value data
 650  *
 651  * RETURNS
 652  *    Success: ERROR_SUCCESS
 653  *    Failure: Error code
 654  *
 655  * NOTES
 656  *   win95 does not care about count for REG_SZ and finds out the len by itself (js)
 657  *   NT does definitely care (aj)
 658  */
 659 DWORD WINAPI RegSetValueExW( HKEY hkey, LPCWSTR name, DWORD reserved,
 660                              DWORD type, CONST BYTE *data, DWORD count )
 661 {
 662     UNICODE_STRING nameW;
 663
 664     if (count && is_string(type))
 665     {
 666         LPCWSTR str = (LPCWSTR)data;
 667         /* if user forgot to count terminating null, add it (yes NT does this) */
 668         if (str[count / sizeof(WCHAR) - 1] && !str[count / sizeof(WCHAR)])
 669             count += sizeof(WCHAR);
 670     }
 671
 672     RtlInitUnicodeString( &nameW, name );
 673     return RtlNtStatusToDosError( NtSetValueKey( hkey, &nameW, 0, type, data, count ) );
 674 }
 675
 676
 677 /******************************************************************************
 678  *           RegSetValueExA   [ADVAPI32.169]
 679  */
 680 DWORD WINAPI RegSetValueExA( HKEY hkey, LPCSTR name, DWORD reserved, DWORD type,
 681                              CONST BYTE *data, DWORD count )
 682 {
 683     UNICODE_STRING nameW;
 684     ANSI_STRING nameA;
 685     WCHAR *dataW = NULL;
 686     NTSTATUS status;
 687
 688     if (count && is_string(type))
 689     {
 690         /* if user forgot to count terminating null, add it (yes NT does this) */
 691         if (data[count-1] && !data[count]) count++;
 692     }
 693
 694     if (is_string( type )) /* need to convert to Unicode */
 695     {
 696         DWORD lenW = MultiByteToWideChar( CP_ACP, 0, data, count, NULL, 0 );
 697         if (!(dataW = HeapAlloc( GetProcessHeap(), 0, lenW*sizeof(WCHAR) )))
 698             return ERROR_OUTOFMEMORY;
 699         MultiByteToWideChar( CP_ACP, 0, data, count, dataW, lenW );
 700         count = lenW * sizeof(WCHAR);
 701         data = (BYTE *)dataW;
 702     }
 703
 704     RtlInitAnsiString( &nameA, name );
 705     /* FIXME: should use Unicode buffer in TEB */
 706     if (!(status = RtlAnsiStringToUnicodeString( &nameW, &nameA, TRUE )))
 707     {
 708         status = NtSetValueKey( hkey, &nameW, 0, type, data, count );
 709         RtlFreeUnicodeString( &nameW );
 710     }
 711     if (dataW) HeapFree( GetProcessHeap(), 0, dataW );
 712     return RtlNtStatusToDosError( status );
 713 }
 714
 715
 716 /******************************************************************************
 717  *           RegSetValueW   [ADVAPI32.171]
 718  */
 719 DWORD WINAPI RegSetValueW( HKEY hkey, LPCWSTR name, DWORD type, LPCWSTR data, DWORD count )
 720 {
 721     HKEY subkey = hkey;
 722     DWORD ret;
 723
 724     TRACE("(0x%x,%s,%ld,%s,%ld)\n", hkey, debugstr_w(name), type, debugstr_w(data), count );
 725
 726     if (type != REG_SZ) return ERROR_INVALID_PARAMETER;
 727
 728     if (name && name[0])  /* need to create the subkey */
 729     {
 730         if ((ret = RegCreateKeyW( hkey, name, &subkey )) != ERROR_SUCCESS) return ret;
 731     }
 732
 733     ret = RegSetValueExW( subkey, NULL, 0, REG_SZ, (LPBYTE)data,
 734                           (strlenW( data ) + 1) * sizeof(WCHAR) );
 735     if (subkey != hkey) RegCloseKey( subkey );
 736     return ret;
 737 }
 738
 739
 740 /******************************************************************************
 741  *           RegSetValueA   [ADVAPI32.168]
 742  */
 743 DWORD WINAPI RegSetValueA( HKEY hkey, LPCSTR name, DWORD type, LPCSTR data, DWORD count )
 744 {
 745     HKEY subkey = hkey;
 746     DWORD ret;
 747
 748     TRACE("(0x%x,%s,%ld,%s,%ld)\n", hkey, debugstr_a(name), type, debugstr_a(data), count );
 749
 750     if (type != REG_SZ) return ERROR_INVALID_PARAMETER;
 751
 752     if (name && name[0])  /* need to create the subkey */
 753     {
 754         if ((ret = RegCreateKeyA( hkey, name, &subkey )) != ERROR_SUCCESS) return ret;
 755     }
 756     ret = RegSetValueExA( subkey, NULL, 0, REG_SZ, (LPBYTE)data, strlen(data)+1 );
 757     if (subkey != hkey) RegCloseKey( subkey );
 758     return ret;
 759 }
 760
 761
 762
 763 /******************************************************************************
 764  *           RegQueryValueExW   [ADVAPI32.158]
 765  *
 766  * Retrieves type and data for a specified name associated with an open key
 767  *
 768  * PARAMS
 769  *    hkey      [I]   Handle of key to query
 770  *    name      [I]   Name of value to query
 771  *    reserved  [I]   Reserved - must be NULL
 772  *    type      [O]   Address of buffer for value type.  If NULL, the type
 773  *                        is not required.
 774  *    data      [O]   Address of data buffer.  If NULL, the actual data is
 775  *                        not required.
 776  *    count     [I/O] Address of data buffer size
 777  *
 778  * RETURNS
 779  *    ERROR_SUCCESS:   Success
 780  *    ERROR_MORE_DATA: !!! if the specified buffer is not big enough to hold the data
 781  *                     buffer is left untouched. The MS-documentation is wrong (js) !!!
 782  */
 783 DWORD WINAPI RegQueryValueExW( HKEY hkey, LPCWSTR name, LPDWORD reserved, LPDWORD type,
 784                                LPBYTE data, LPDWORD count )
 785 {
 786     NTSTATUS status;
 787     UNICODE_STRING name_str;
 788     DWORD total_size;
 789     char buffer[256], *buf_ptr = buffer;
 790     KEY_VALUE_PARTIAL_INFORMATION *info = (KEY_VALUE_PARTIAL_INFORMATION *)buffer;
 791     static const int info_size = sizeof(*info) - sizeof(info->Data);
 792
 793     TRACE("(0x%x,%s,%p,%p,%p,%p=%ld)\n",
 794           hkey, debugstr_w(name), reserved, type, data, count, count ? *count : 0 );
 795
 796     if ((data && !count) || reserved) return ERROR_INVALID_PARAMETER;
 797
 798     RtlInitUnicodeString( &name_str, name );
 799
 800     if (data) total_size = min( sizeof(buffer), *count + info_size );
 801     else total_size = info_size;
 802
 803     status = NtQueryValueKey( hkey, &name_str, KeyValuePartialInformation,
 804                               buffer, total_size, &total_size );
 805     if (status && status != STATUS_BUFFER_OVERFLOW) goto done;
 806
 807     if (data)
 808     {
 809         /* retry with a dynamically allocated buffer */
 810         while (status == STATUS_BUFFER_OVERFLOW && total_size - info_size <= *count)
 811         {
 812             if (buf_ptr != buffer) HeapFree( GetProcessHeap(), 0, buf_ptr );
 813             if (!(buf_ptr = HeapAlloc( GetProcessHeap(), 0, total_size )))
 814                 return ERROR_NOT_ENOUGH_MEMORY;
 815             info = (KEY_VALUE_PARTIAL_INFORMATION *)buf_ptr;
 816             status = NtQueryValueKey( hkey, &name_str, KeyValuePartialInformation,
 817                                       buf_ptr, total_size, &total_size );
 818         }
 819
 820         if (!status)
 821         {
 822             memcpy( data, buf_ptr + info_size, total_size - info_size );
 823             /* if the type is REG_SZ and data is not 0-terminated
 824              * and there is enough space in the buffer NT appends a \0 */
 825             if (total_size - info_size <= *count-sizeof(WCHAR) && is_string(info->Type))
 826             {
 827                 WCHAR *ptr = (WCHAR *)(data + total_size - info_size);
 828                 if (ptr > (WCHAR *)data && ptr[-1]) *ptr = 0;
 829             }
 830         }
 831         else if (status != STATUS_BUFFER_OVERFLOW) goto done;
 832     }
 833
 834     if (type) *type = info->Type;
 835     if (count) *count = total_size - info_size;
 836
 837  done:
 838     if (buf_ptr != buffer) HeapFree( GetProcessHeap(), 0, buf_ptr );
 839     return RtlNtStatusToDosError(status);
 840 }
 841
 842
 843 /******************************************************************************
 844  *           RegQueryValueExA   [ADVAPI32.157]
 845  *
 846  * NOTES:
 847  * the documentation is wrong: if the buffer is too small it remains untouched
 848  */
 849 DWORD WINAPI RegQueryValueExA( HKEY hkey, LPCSTR name, LPDWORD reserved, LPDWORD type,
 850                                LPBYTE data, LPDWORD count )
 851 {
 852     NTSTATUS status;
 853     ANSI_STRING nameA;
 854     UNICODE_STRING nameW;
 855     DWORD total_size;
 856     char buffer[256], *buf_ptr = buffer;
 857     KEY_VALUE_PARTIAL_INFORMATION *info = (KEY_VALUE_PARTIAL_INFORMATION *)buffer;
 858     static const int info_size = sizeof(*info) - sizeof(info->Data);
 859
 860     TRACE("(0x%x,%s,%p,%p,%p,%p=%ld)\n",
 861           hkey, debugstr_a(name), reserved, type, data, count, count ? *count : 0 );
 862
 863     if ((data && !count) || reserved) return ERROR_INVALID_PARAMETER;
 864
 865     RtlInitAnsiString( &nameA, name );
 866     /* FIXME: should use Unicode buffer in TEB */
 867     if ((status = RtlAnsiStringToUnicodeString( &nameW, &nameA, TRUE )))
 868         return RtlNtStatusToDosError(status);
 869
 870     status = NtQueryValueKey( hkey, &nameW, KeyValuePartialInformation,
 871                               buffer, sizeof(buffer), &total_size );
 872     if (status && status != STATUS_BUFFER_OVERFLOW) goto done;
 873
 874     /* we need to fetch the contents for a string type even if not requested,
 875      * because we need to compute the length of the ASCII string. */
 876     if (data || is_string(info->Type))
 877     {
 878         /* retry with a dynamically allocated buffer */
 879         while (status == STATUS_BUFFER_OVERFLOW)
 880         {
 881             if (buf_ptr != buffer) HeapFree( GetProcessHeap(), 0, buf_ptr );
 882             if (!(buf_ptr = HeapAlloc( GetProcessHeap(), 0, total_size )))
 883             {
 884                 status = STATUS_NO_MEMORY;
 885                 goto done;
 886             }
 887             info = (KEY_VALUE_PARTIAL_INFORMATION *)buf_ptr;
 888             status = NtQueryValueKey( hkey, &nameW, KeyValuePartialInformation,
 889                                       buf_ptr, total_size, &total_size );
 890         }
 891
 892         if (!status)
 893         {
 894             if (is_string(info->Type))
 895             {
 896                 DWORD len = WideCharToMultiByte( CP_ACP, 0, (WCHAR *)(buf_ptr + info_size),
 897                                                  (total_size - info_size) /sizeof(WCHAR),
 898                                                  NULL, 0, NULL, NULL );
 899                 if (data && len)
 900                 {
 901                     if (len > *count) status = STATUS_BUFFER_OVERFLOW;
 902                     else
 903                     {
 904                         WideCharToMultiByte( CP_ACP, 0, (WCHAR *)(buf_ptr + info_size),
 905                                              (total_size - info_size) /sizeof(WCHAR),
 906                                              data, len, NULL, NULL );
 907                         /* if the type is REG_SZ and data is not 0-terminated
 908                          * and there is enough space in the buffer NT appends a \0 */
 909                         if (len < *count && data[len-1]) data[len] = 0;
 910                     }
 911                 }
 912                 total_size = len + info_size;
 913             }
 914             else if (data)
 915             {
 916                 if (total_size - info_size > *count) status = STATUS_BUFFER_OVERFLOW;
 917                 else memcpy( data, buf_ptr + info_size, total_size - info_size );
 918             }
 919         }
 920         else if (status != STATUS_BUFFER_OVERFLOW) goto done;
 921     }
 922
 923     if (type) *type = info->Type;
 924     if (count) *count = total_size - info_size;
 925
 926  done:
 927     if (buf_ptr != buffer) HeapFree( GetProcessHeap(), 0, buf_ptr );
 928     RtlFreeUnicodeString( &nameW );
 929     return RtlNtStatusToDosError(status);
 930 }
 931
 932
 933 /******************************************************************************
 934  *           RegQueryValueW   [ADVAPI32.159]
 935  */
 936 DWORD WINAPI RegQueryValueW( HKEY hkey, LPCWSTR name, LPWSTR data, LPLONG count )
 937 {
 938     DWORD ret;
 939     HKEY subkey = hkey;
 940
 941     TRACE("(%x,%s,%p,%ld)\n", hkey, debugstr_w(name), data, count ? *count : 0 );
 942
 943     if (name && name[0])
 944     {
 945         if ((ret = RegOpenKeyW( hkey, name, &subkey )) != ERROR_SUCCESS) return ret;
 946     }
 947     ret = RegQueryValueExW( subkey, NULL, NULL, NULL, (LPBYTE)data, count );
 948     if (subkey != hkey) RegCloseKey( subkey );
 949     if (ret == ERROR_FILE_NOT_FOUND)
 950     {
 951         /* return empty string if default value not found */
 952         if (data) *data = 0;
 953         if (count) *count = 1;
 954         ret = ERROR_SUCCESS;
 955     }
 956     return ret;
 957 }
 958
 959
 960 /******************************************************************************
 961  *           RegQueryValueA   [ADVAPI32.156]
 962  */
 963 DWORD WINAPI RegQueryValueA( HKEY hkey, LPCSTR name, LPSTR data, LPLONG count )
 964 {
 965     DWORD ret;
 966     HKEY subkey = hkey;
 967
 968     TRACE("(%x,%s,%p,%ld)\n", hkey, debugstr_a(name), data, count ? *count : 0 );
 969
 970     if (name && name[0])
 971     {
 972         if ((ret = RegOpenKeyA( hkey, name, &subkey )) != ERROR_SUCCESS) return ret;
 973     }
 974     ret = RegQueryValueExA( subkey, NULL, NULL, NULL, (LPBYTE)data, count );
 975     if (subkey != hkey) RegCloseKey( subkey );
 976     if (ret == ERROR_FILE_NOT_FOUND)
 977     {
 978         /* return empty string if default value not found */
 979         if (data) *data = 0;
 980         if (count) *count = 1;
 981         ret = ERROR_SUCCESS;
 982     }
 983     return ret;
 984 }
 985
 986
 987 /******************************************************************************
 988  *           RegEnumValueW   [ADVAPI32.142]
 989  *
 990  * PARAMS
 991  *    hkey       [I] Handle to key to query
 992  *    index      [I] Index of value to query
 993  *    value      [O] Value string
 994  *    val_count  [I/O] Size of value buffer (in wchars)
 995  *    reserved   [I] Reserved
 996  *    type       [O] Type code
 997  *    data       [O] Value data
 998  *    count      [I/O] Size of data buffer (in bytes)
 999  */
1000
1001 DWORD WINAPI RegEnumValueW( HKEY hkey, DWORD index, LPWSTR value, LPDWORD val_count,
1002                             LPDWORD reserved, LPDWORD type, LPBYTE data, LPDWORD count )
1003 {
1004     DWORD ret, len;
1005     struct enum_key_value_request *req = get_req_buffer();
1006
1007     TRACE("(%x,%ld,%p,%p,%p,%p,%p,%p)\n",
1008           hkey, index, value, val_count, reserved, type, data, count );
1009
1010     /* NT only checks count, not val_count */
1011     if ((data && !count) || reserved) return ERROR_INVALID_PARAMETER;
1012
1013     req->hkey = hkey;
1014     req->index = index;
1015     req->offset = 0;
1016     if ((ret = reg_server_call( REQ_ENUM_KEY_VALUE )) != ERROR_SUCCESS) return ret;
1017
1018     len = strlenW( req->name ) + 1;
1019     if (len > *val_count) return ERROR_MORE_DATA;
1020     memcpy( value, req->name, len * sizeof(WCHAR) );
1021     *val_count = len - 1;
1022
1023     if (data)
1024     {
1025         if (*count < req->len) ret = ERROR_MORE_DATA;
1026         else
1027         {
1028             /* copy the data */
1029             unsigned int max = server_remaining( req->data );
1030             unsigned int pos = 0;
1031             while (pos < req->len)
1032             {
1033                 unsigned int len = min( req->len - pos, max );
1034                 memcpy( data + pos, req->data, len );
1035                 if ((pos += len) >= req->len) break;
1036                 req->offset = pos;
1037                 if ((ret = reg_server_call( REQ_ENUM_KEY_VALUE )) != ERROR_SUCCESS) return ret;
1038             }
1039         }
1040         /* if the type is REG_SZ and data is not 0-terminated
1041          * and there is enough space in the buffer NT appends a \0 */
1042         if (req->len && is_string(req->type) &&
1043             (req->len < *count) && ((WCHAR *)data)[req->len-1]) ((WCHAR *)data)[req->len] = 0;
1044     }
1045     if (type) *type = req->type;
1046     if (count) *count = req->len;
1047     return ret;
1048 }
1049
1050
1051 /******************************************************************************
1052  *           RegEnumValueA   [ADVAPI32.141]
1053  */
1054 DWORD WINAPI RegEnumValueA( HKEY hkey, DWORD index, LPSTR value, LPDWORD val_count,
1055                             LPDWORD reserved, LPDWORD type, LPBYTE data, LPDWORD count )
1056 {
1057     DWORD ret, len, total_len;
1058     struct enum_key_value_request *req = get_req_buffer();
1059
1060     TRACE("(%x,%ld,%p,%p,%p,%p,%p,%p)\n",
1061           hkey, index, value, val_count, reserved, type, data, count );
1062
1063     /* NT only checks count, not val_count */
1064     if ((data && !count) || reserved) return ERROR_INVALID_PARAMETER;
1065
1066     req->hkey = hkey;
1067     req->index = index;
1068     req->offset = 0;
1069     if ((ret = reg_server_call( REQ_ENUM_KEY_VALUE )) != ERROR_SUCCESS) return ret;
1070
1071     len = strlenW( req->name ) + 1;
1072     if (len > *val_count) return ERROR_MORE_DATA;
1073     memcpyWtoA( value, req->name, len );
1074     *val_count = len - 1;
1075
1076     total_len = is_string( req->type ) ? req->len/sizeof(WCHAR) : req->len;
1077
1078     if (data)
1079     {
1080         if (*count < total_len) ret = ERROR_MORE_DATA;
1081         else
1082         {
1083             /* copy the data */
1084             unsigned int max = server_remaining( req->data );
1085             unsigned int pos = 0;
1086             while (pos < req->len)
1087             {
1088                 unsigned int len = min( req->len - pos, max );
1089                 if (is_string( req->type ))
1090                     memcpyWtoA( data + pos/sizeof(WCHAR), (WCHAR *)req->data, len/sizeof(WCHAR) );
1091                 else
1092                     memcpy( data + pos, req->data, len );
1093                 if ((pos += len) >= req->len) break;
1094                 req->offset = pos;
1095                 if ((ret = reg_server_call( REQ_ENUM_KEY_VALUE )) != ERROR_SUCCESS) return ret;
1096             }
1097         }
1098         /* if the type is REG_SZ and data is not 0-terminated
1099          * and there is enough space in the buffer NT appends a \0 */
1100         if (total_len && is_string(req->type) && (total_len < *count) && data[total_len-1])
1101             data[total_len] = 0;
1102     }
1103
1104     if (count) *count = total_len;
1105     if (type) *type = req->type;
1106     return ret;
1107 }
1108
1109
1110
1111 /******************************************************************************
1112  *           RegDeleteValueW   [ADVAPI32.136]
1113  *
1114  * PARAMS
1115  *    hkey   [I] handle to key
1116  *    name   [I] name of value to delete
1117  *
1118  * RETURNS
1119  *    error status
1120  */
1121 DWORD WINAPI RegDeleteValueW( HKEY hkey, LPCWSTR name )
1122 {
1123     UNICODE_STRING nameW;
1124     RtlInitUnicodeString( &nameW, name );
1125     return RtlNtStatusToDosError( NtDeleteValueKey( hkey, &nameW ) );
1126 }
1127
1128
1129 /******************************************************************************
1130  *           RegDeleteValueA   [ADVAPI32.135]
1131  */
1132 DWORD WINAPI RegDeleteValueA( HKEY hkey, LPCSTR name )
1133 {
1134     UNICODE_STRING nameW;
1135     STRING nameA;
1136     NTSTATUS status;
1137
1138     RtlInitAnsiString( &nameA, name );
1139     /* FIXME: should use Unicode buffer in TEB */
1140     if (!(status = RtlAnsiStringToUnicodeString( &nameW, &nameA, TRUE )))
1141     {
1142         status = NtDeleteValueKey( hkey, &nameW );
1143         RtlFreeUnicodeString( &nameW );
1144     }
1145     return RtlNtStatusToDosError( status );
1146 }
1147
1148
1149 /******************************************************************************
1150  *           RegLoadKeyW   [ADVAPI32.185]
1151  *
1152  * PARAMS
1153  *    hkey      [I] Handle of open key
1154  *    subkey    [I] Address of name of subkey
1155  *    filename  [I] Address of filename for registry information
1156  */
1157 LONG WINAPI RegLoadKeyW( HKEY hkey, LPCWSTR subkey, LPCWSTR filename )
1158 {
1159     HANDLE file;
1160     DWORD ret, len, err = GetLastError();
1161
1162     TRACE( "(%x,%s,%s)\n", hkey, debugstr_w(subkey), debugstr_w(filename) );
1163
1164     if (!filename || !*filename) return ERROR_INVALID_PARAMETER;
1165     if (!subkey || !*subkey) return ERROR_INVALID_PARAMETER;
1166
1167     len = strlenW( subkey ) * sizeof(WCHAR);
1168     if (len > MAX_PATH*sizeof(WCHAR)) return ERROR_INVALID_PARAMETER;
1169
1170     if ((file = CreateFileW( filename, GENERIC_READ, 0, NULL, OPEN_EXISTING,
1171                              FILE_ATTRIBUTE_NORMAL, -1 )) == INVALID_HANDLE_VALUE)
1172     {
1173         ret = GetLastError();
1174         goto done;
1175     }
1176
1177     SERVER_START_REQ
1178     {
1179         struct load_registry_request *req = server_alloc_req( sizeof(*req), len );
1180         req->hkey  = hkey;
1181         req->file  = file;
1182         memcpy( server_data_ptr(req), subkey, len );
1183         ret = reg_server_call( REQ_LOAD_REGISTRY );
1184     }
1185     SERVER_END_REQ;
1186     CloseHandle( file );
1187
1188  done:
1189     SetLastError( err );  /* restore the last error code */
1190     return ret;
1191 }
1192
1193
1194 /******************************************************************************
1195  *           RegLoadKeyA   [ADVAPI32.184]
1196  */
1197 LONG WINAPI RegLoadKeyA( HKEY hkey, LPCSTR subkey, LPCSTR filename )
1198 {
1199     HANDLE file;
1200     DWORD ret, len, err = GetLastError();
1201
1202     TRACE( "(%x,%s,%s)\n", hkey, debugstr_a(subkey), debugstr_a(filename) );
1203
1204     if (!filename || !*filename) return ERROR_INVALID_PARAMETER;
1205     if (!subkey || !*subkey) return ERROR_INVALID_PARAMETER;
1206
1207     len = MultiByteToWideChar( CP_ACP, 0, subkey, strlen(subkey), NULL, 0 ) * sizeof(WCHAR);
1208     if (len > MAX_PATH*sizeof(WCHAR)) return ERROR_INVALID_PARAMETER;
1209
1210     if ((file = CreateFileA( filename, GENERIC_READ, 0, NULL, OPEN_EXISTING,
1211                              FILE_ATTRIBUTE_NORMAL, -1 )) == INVALID_HANDLE_VALUE)
1212     {
1213         ret = GetLastError();
1214         goto done;
1215     }
1216
1217     SERVER_START_REQ
1218     {
1219         struct load_registry_request *req = server_alloc_req( sizeof(*req), len );
1220         req->hkey  = hkey;
1221         req->file  = file;
1222         MultiByteToWideChar( CP_ACP, 0, subkey, strlen(subkey),
1223                              server_data_ptr(req), len/sizeof(WCHAR) );
1224         ret = reg_server_call( REQ_LOAD_REGISTRY );
1225     }
1226     SERVER_END_REQ;
1227     CloseHandle( file );
1228
1229  done:
1230     SetLastError( err );  /* restore the last error code */
1231     return ret;
1232 }
1233
1234
1235 /******************************************************************************
1236  *           RegSaveKeyA   [ADVAPI32.165]
1237  *
1238  * PARAMS
1239  *    hkey   [I] Handle of key where save begins
1240  *    lpFile [I] Address of filename to save to
1241  *    sa     [I] Address of security structure
1242  */
1243 LONG WINAPI RegSaveKeyA( HKEY hkey, LPCSTR file, LPSECURITY_ATTRIBUTES sa )
1244 {
1245     char buffer[1024];
1246     int count = 0;
1247     LPSTR name;
1248     DWORD ret, err;
1249     HFILE handle;
1250
1251     TRACE( "(%x,%s,%p)\n", hkey, debugstr_a(file), sa );
1252
1253     if (!file || !*file) return ERROR_INVALID_PARAMETER;
1254
1255     err = GetLastError();
1256     GetFullPathNameA( file, sizeof(buffer), buffer, &name );
1257     for (;;)
1258     {
1259         sprintf( name, "reg%04x.tmp", count++ );
1260         handle = CreateFileA( buffer, GENERIC_WRITE, 0, NULL,
1261                             CREATE_NEW, FILE_ATTRIBUTE_NORMAL, -1 );
1262         if (handle != INVALID_HANDLE_VALUE) break;
1263         if ((ret = GetLastError()) != ERROR_ALREADY_EXISTS) goto done;
1264
1265         /* Something gone haywire ? Please report if this happens abnormally */
1266         if (count >= 100)
1267             MESSAGE("Wow, we are already fiddling with a temp file %s with an ordinal as high as %d !\nYou might want to delete all corresponding temp files in that directory.\n", buffer, count);
1268     }
1269
1270     SERVER_START_REQ
1271     {
1272         struct save_registry_request *req = server_alloc_req( sizeof(*req), 0 );
1273         req->hkey = hkey;
1274         req->file = handle;
1275         ret = reg_server_call( REQ_SAVE_REGISTRY );
1276     }
1277     SERVER_END_REQ;
1278
1279     CloseHandle( handle );
1280     if (!ret)
1281     {
1282         if (!MoveFileExA( buffer, file, MOVEFILE_REPLACE_EXISTING ))
1283         {
1284             ERR( "Failed to move %s to %s\n", buffer, file );
1285             ret = GetLastError();
1286         }
1287     }
1288     if (ret) DeleteFileA( buffer );
1289
1290 done:
1291     SetLastError( err );  /* restore last error code */
1292     return ret;
1293 }
1294
1295
1296 /******************************************************************************
1297  *           RegSaveKeyW   [ADVAPI32.166]
1298  */
1299 LONG WINAPI RegSaveKeyW( HKEY hkey, LPCWSTR file, LPSECURITY_ATTRIBUTES sa )
1300 {
1301     LPSTR fileA = HEAP_strdupWtoA( GetProcessHeap(), 0, file );
1302     DWORD ret = RegSaveKeyA( hkey, fileA, sa );
1303     if (fileA) HeapFree( GetProcessHeap(), 0, fileA );
1304     return ret;
1305 }