dlls/kernel/file.c

   1 /*
   2  * File handling functions
   3  *
   4  * Copyright 1993 John Burton
   5  * Copyright 1996 Alexandre Julliard
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with this library; if not, write to the Free Software
  19  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  20  *
  21  * TODO:
  22  *    Fix the CopyFileEx methods to implement the "extended" functionality.
  23  *    Right now, they simply call the CopyFile method.
  24  */
  25
  26 #include "config.h"
  27 #include "wine/port.h"
  28
  29 #include <stdarg.h>
  30
  31 #define NONAMELESSUNION
  32 #define NONAMELESSSTRUCT
  33 #include "winerror.h"
  34 #include "ntstatus.h"
  35 #include "windef.h"
  36 #include "winbase.h"
  37 #include "winreg.h"
  38 #include "winternl.h"
  39 #include "wincon.h"
  40 #include "wine/winbase16.h"
  41 #include "kernel_private.h"
  42
  43 #include "wine/exception.h"
  44 #include "excpt.h"
  45 #include "wine/unicode.h"
  46 #include "wine/debug.h"
  47 #include "async.h"
  48
  49 WINE_DEFAULT_DEBUG_CHANNEL(file);
  50
  51 HANDLE dos_handles[DOS_TABLE_SIZE];
  52
  53 /* info structure for FindFirstFile handle */
  54 typedef struct
  55 {
  56     HANDLE           handle;      /* handle to directory */
  57     CRITICAL_SECTION cs;          /* crit section protecting this structure */
  58     UNICODE_STRING   mask;        /* file mask */
  59     BOOL             is_root;     /* is directory the root of the drive? */
  60     UINT             data_pos;    /* current position in dir data */
  61     UINT             data_len;    /* length of dir data */
  62     BYTE             data[8192];  /* directory data */
  63 } FIND_FIRST_INFO;
  64
  65
  66 static WINE_EXCEPTION_FILTER(page_fault)
  67 {
  68     if (GetExceptionCode() == EXCEPTION_ACCESS_VIOLATION)
  69         return EXCEPTION_EXECUTE_HANDLER;
  70     return EXCEPTION_CONTINUE_SEARCH;
  71 }
  72
  73 /**************************************************************************
  74  *                      Operations on file handles                        *
  75  **************************************************************************/
  76
  77 /***********************************************************************
  78  *           FILE_InitProcessDosHandles
  79  *
  80  * Allocates the default DOS handles for a process. Called either by
  81  * Win32HandleToDosFileHandle below or by the DOSVM stuff.
  82  */
  83 static void FILE_InitProcessDosHandles( void )
  84 {
  85     static BOOL init_done /* = FALSE */;
  86     HANDLE cp = GetCurrentProcess();
  87
  88     if (init_done) return;
  89     init_done = TRUE;
  90     DuplicateHandle(cp, GetStdHandle(STD_INPUT_HANDLE), cp, &dos_handles[0],
  91                     0, TRUE, DUPLICATE_SAME_ACCESS);
  92     DuplicateHandle(cp, GetStdHandle(STD_OUTPUT_HANDLE), cp, &dos_handles[1],
  93                     0, TRUE, DUPLICATE_SAME_ACCESS);
  94     DuplicateHandle(cp, GetStdHandle(STD_ERROR_HANDLE), cp, &dos_handles[2],
  95                     0, TRUE, DUPLICATE_SAME_ACCESS);
  96     DuplicateHandle(cp, GetStdHandle(STD_ERROR_HANDLE), cp, &dos_handles[3],
  97                     0, TRUE, DUPLICATE_SAME_ACCESS);
  98     DuplicateHandle(cp, GetStdHandle(STD_ERROR_HANDLE), cp, &dos_handles[4],
  99                     0, TRUE, DUPLICATE_SAME_ACCESS);
 100 }
 101
 102
 103 /***********************************************************************
 104  *              GetOverlappedResult     (KERNEL32.@)
 105  *
 106  * Check the result of an Asynchronous data transfer from a file.
 107  *
 108  * Parameters
 109  *   HANDLE hFile                 [in] handle of file to check on
 110  *   LPOVERLAPPED lpOverlapped    [in/out] pointer to overlapped
 111  *   LPDWORD lpTransferred        [in/out] number of bytes transferred
 112  *   BOOL bWait                   [in] wait for the transfer to complete ?
 113  *
 114  * RETURNS
 115  *   TRUE on success
 116  *   FALSE on failure
 117  *
 118  *  If successful (and relevant) lpTransferred will hold the number of
 119  *   bytes transferred during the async operation.
 120  *
 121  * BUGS
 122  *
 123  * Currently only works for WaitCommEvent, ReadFile, WriteFile
 124  *   with communications ports.
 125  *
 126  */
 127 BOOL WINAPI GetOverlappedResult(HANDLE hFile, LPOVERLAPPED lpOverlapped,
 128                                 LPDWORD lpTransferred, BOOL bWait)
 129 {
 130     DWORD r;
 131
 132     TRACE("(%p %p %p %x)\n", hFile, lpOverlapped, lpTransferred, bWait);
 133
 134     if (lpOverlapped==NULL)
 135     {
 136         ERR("lpOverlapped was null\n");
 137         return FALSE;
 138     }
 139     if (!lpOverlapped->hEvent)
 140     {
 141         ERR("lpOverlapped->hEvent was null\n");
 142         return FALSE;
 143     }
 144
 145     if ( bWait )
 146     {
 147         do {
 148             TRACE("waiting on %p\n",lpOverlapped);
 149             r = WaitForSingleObjectEx(lpOverlapped->hEvent, INFINITE, TRUE);
 150             TRACE("wait on %p returned %ld\n",lpOverlapped,r);
 151         } while (r==STATUS_USER_APC);
 152     }
 153     else if ( lpOverlapped->Internal == STATUS_PENDING )
 154     {
 155         /* Wait in order to give APCs a chance to run. */
 156         /* This is cheating, so we must set the event again in case of success -
 157            it may be a non-manual reset event. */
 158         do {
 159             TRACE("waiting on %p\n",lpOverlapped);
 160             r = WaitForSingleObjectEx(lpOverlapped->hEvent, 0, TRUE);
 161             TRACE("wait on %p returned %ld\n",lpOverlapped,r);
 162         } while (r==STATUS_USER_APC);
 163         if ( r == WAIT_OBJECT_0 )
 164             NtSetEvent ( lpOverlapped->hEvent, NULL );
 165     }
 166
 167     if(lpTransferred)
 168         *lpTransferred = lpOverlapped->InternalHigh;
 169
 170     switch ( lpOverlapped->Internal )
 171     {
 172     case STATUS_SUCCESS:
 173         return TRUE;
 174     case STATUS_PENDING:
 175         SetLastError ( ERROR_IO_INCOMPLETE );
 176         if ( bWait ) ERR ("PENDING status after waiting!\n");
 177         return FALSE;
 178     default:
 179         SetLastError ( RtlNtStatusToDosError ( lpOverlapped->Internal ) );
 180         return FALSE;
 181     }
 182 }
 183
 184 /***********************************************************************
 185  *             CancelIo                   (KERNEL32.@)
 186  */
 187 BOOL WINAPI CancelIo(HANDLE handle)
 188 {
 189     async_private *ovp,*t;
 190
 191     TRACE("handle = %p\n",handle);
 192
 193     for (ovp = NtCurrentTeb()->pending_list; ovp; ovp = t)
 194     {
 195         t = ovp->next;
 196         if ( ovp->handle == handle )
 197              cancel_async ( ovp );
 198     }
 199     SleepEx(1,TRUE);
 200     return TRUE;
 201 }
 202
 203 /***********************************************************************
 204  *           _hread   (KERNEL32.@)
 205  */
 206 LONG WINAPI _hread( HFILE hFile, LPVOID buffer, LONG count)
 207 {
 208     return _lread( hFile, buffer, count );
 209 }
 210
 211
 212 /***********************************************************************
 213  *           _hwrite   (KERNEL32.@)
 214  *
 215  *      experimentation yields that _lwrite:
 216  *              o truncates the file at the current position with
 217  *                a 0 len write
 218  *              o returns 0 on a 0 length write
 219  *              o works with console handles
 220  *
 221  */
 222 LONG WINAPI _hwrite( HFILE handle, LPCSTR buffer, LONG count )
 223 {
 224     DWORD result;
 225
 226     TRACE("%d %p %ld\n", handle, buffer, count );
 227
 228     if (!count)
 229     {
 230         /* Expand or truncate at current position */
 231         if (!SetEndOfFile( (HANDLE)handle )) return HFILE_ERROR;
 232         return 0;
 233     }
 234     if (!WriteFile( (HANDLE)handle, buffer, count, &result, NULL ))
 235         return HFILE_ERROR;
 236     return result;
 237 }
 238
 239
 240 /***********************************************************************
 241  *           _lclose   (KERNEL32.@)
 242  */
 243 HFILE WINAPI _lclose( HFILE hFile )
 244 {
 245     TRACE("handle %d\n", hFile );
 246     return CloseHandle( (HANDLE)hFile ) ? 0 : HFILE_ERROR;
 247 }
 248
 249
 250 /***********************************************************************
 251  *           _lcreat   (KERNEL32.@)
 252  */
 253 HFILE WINAPI _lcreat( LPCSTR path, INT attr )
 254 {
 255     /* Mask off all flags not explicitly allowed by the doc */
 256     attr &= FILE_ATTRIBUTE_READONLY | FILE_ATTRIBUTE_HIDDEN | FILE_ATTRIBUTE_SYSTEM;
 257     TRACE("%s %02x\n", path, attr );
 258     return (HFILE)CreateFileA( path, GENERIC_READ | GENERIC_WRITE,
 259                                FILE_SHARE_READ | FILE_SHARE_WRITE, NULL,
 260                                CREATE_ALWAYS, attr, 0 );
 261 }
 262
 263
 264 /***********************************************************************
 265  *           _lopen   (KERNEL32.@)
 266  */
 267 HFILE WINAPI _lopen( LPCSTR path, INT mode )
 268 {
 269     DWORD access, sharing;
 270
 271     TRACE("('%s',%04x)\n", path, mode );
 272     FILE_ConvertOFMode( mode, &access, &sharing );
 273     return (HFILE)CreateFileA( path, access, sharing, NULL, OPEN_EXISTING, 0, 0 );
 274 }
 275
 276
 277 /***********************************************************************
 278  *           _lread   (KERNEL32.@)
 279  */
 280 UINT WINAPI _lread( HFILE handle, LPVOID buffer, UINT count )
 281 {
 282     DWORD result;
 283     if (!ReadFile( (HANDLE)handle, buffer, count, &result, NULL ))
 284         return HFILE_ERROR;
 285     return result;
 286 }
 287
 288
 289 /***********************************************************************
 290  *           _llseek   (KERNEL32.@)
 291  */
 292 LONG WINAPI _llseek( HFILE hFile, LONG lOffset, INT nOrigin )
 293 {
 294     return SetFilePointer( (HANDLE)hFile, lOffset, NULL, nOrigin );
 295 }
 296
 297
 298 /***********************************************************************
 299  *           _lwrite   (KERNEL32.@)
 300  */
 301 UINT WINAPI _lwrite( HFILE hFile, LPCSTR buffer, UINT count )
 302 {
 303     return (UINT)_hwrite( hFile, buffer, (LONG)count );
 304 }
 305
 306
 307 /***********************************************************************
 308  *           FlushFileBuffers   (KERNEL32.@)
 309  */
 310 BOOL WINAPI FlushFileBuffers( HANDLE hFile )
 311 {
 312     NTSTATUS            nts;
 313     IO_STATUS_BLOCK     ioblk;
 314
 315     if (is_console_handle( hFile ))
 316     {
 317         /* this will fail (as expected) for an output handle */
 318         /* FIXME: wait until FlushFileBuffers is moved to dll/kernel */
 319         /* return FlushConsoleInputBuffer( hFile ); */
 320         return TRUE;
 321     }
 322     nts = NtFlushBuffersFile( hFile, &ioblk );
 323     if (nts != STATUS_SUCCESS)
 324     {
 325         SetLastError( RtlNtStatusToDosError( nts ) );
 326         return FALSE;
 327     }
 328
 329     return TRUE;
 330 }
 331
 332
 333 /***********************************************************************
 334  *           GetFileSize   (KERNEL32.@)
 335  */
 336 DWORD WINAPI GetFileSize( HANDLE hFile, LPDWORD filesizehigh )
 337 {
 338     BY_HANDLE_FILE_INFORMATION info;
 339     if (!GetFileInformationByHandle( hFile, &info )) return -1;
 340     if (filesizehigh) *filesizehigh = info.nFileSizeHigh;
 341     return info.nFileSizeLow;
 342 }
 343
 344
 345 /***********************************************************************
 346  *           GetFileSizeEx   (KERNEL32.@)
 347  */
 348 BOOL WINAPI GetFileSizeEx( HANDLE hFile, PLARGE_INTEGER lpFileSize )
 349 {
 350     BY_HANDLE_FILE_INFORMATION info;
 351
 352     if (!lpFileSize)
 353     {
 354         SetLastError( ERROR_INVALID_PARAMETER );
 355         return FALSE;
 356     }
 357
 358     if (!GetFileInformationByHandle( hFile, &info ))
 359     {
 360         return FALSE;
 361     }
 362
 363     lpFileSize->u.LowPart = info.nFileSizeLow;
 364     lpFileSize->u.HighPart = info.nFileSizeHigh;
 365
 366     return TRUE;
 367 }
 368
 369
 370 /**************************************************************************
 371  *           LockFile   (KERNEL32.@)
 372  */
 373 BOOL WINAPI LockFile( HANDLE hFile, DWORD offset_low, DWORD offset_high,
 374                       DWORD count_low, DWORD count_high )
 375 {
 376     NTSTATUS            status;
 377     LARGE_INTEGER       count, offset;
 378
 379     TRACE( "%p %lx%08lx %lx%08lx\n",
 380            hFile, offset_high, offset_low, count_high, count_low );
 381
 382     count.u.LowPart = count_low;
 383     count.u.HighPart = count_high;
 384     offset.u.LowPart = offset_low;
 385     offset.u.HighPart = offset_high;
 386
 387     status = NtLockFile( hFile, 0, NULL, NULL,
 388                          NULL, &offset, &count, NULL, TRUE, TRUE );
 389
 390     if (status != STATUS_SUCCESS) SetLastError( RtlNtStatusToDosError(status) );
 391     return !status;
 392 }
 393
 394
 395 /**************************************************************************
 396  * LockFileEx [KERNEL32.@]
 397  *
 398  * Locks a byte range within an open file for shared or exclusive access.
 399  *
 400  * RETURNS
 401  *   success: TRUE
 402  *   failure: FALSE
 403  *
 404  * NOTES
 405  * Per Microsoft docs, the third parameter (reserved) must be set to 0.
 406  */
 407 BOOL WINAPI LockFileEx( HANDLE hFile, DWORD flags, DWORD reserved,
 408                         DWORD count_low, DWORD count_high, LPOVERLAPPED overlapped )
 409 {
 410     NTSTATUS status;
 411     LARGE_INTEGER count, offset;
 412
 413     if (reserved)
 414     {
 415         SetLastError( ERROR_INVALID_PARAMETER );
 416         return FALSE;
 417     }
 418
 419     TRACE( "%p %lx%08lx %lx%08lx flags %lx\n",
 420            hFile, overlapped->OffsetHigh, overlapped->Offset,
 421            count_high, count_low, flags );
 422
 423     count.u.LowPart = count_low;
 424     count.u.HighPart = count_high;
 425     offset.u.LowPart = overlapped->Offset;
 426     offset.u.HighPart = overlapped->OffsetHigh;
 427
 428     status = NtLockFile( hFile, overlapped->hEvent, NULL, NULL,
 429                          NULL, &offset, &count, NULL,
 430                          flags & LOCKFILE_FAIL_IMMEDIATELY,
 431                          flags & LOCKFILE_EXCLUSIVE_LOCK );
 432
 433     if (status) SetLastError( RtlNtStatusToDosError(status) );
 434     return !status;
 435 }
 436
 437
 438 /**************************************************************************
 439  *           UnlockFile   (KERNEL32.@)
 440  */
 441 BOOL WINAPI UnlockFile( HANDLE hFile, DWORD offset_low, DWORD offset_high,
 442                         DWORD count_low, DWORD count_high )
 443 {
 444     NTSTATUS    status;
 445     LARGE_INTEGER count, offset;
 446
 447     count.u.LowPart = count_low;
 448     count.u.HighPart = count_high;
 449     offset.u.LowPart = offset_low;
 450     offset.u.HighPart = offset_high;
 451
 452     status = NtUnlockFile( hFile, NULL, &offset, &count, NULL);
 453     if (status) SetLastError( RtlNtStatusToDosError(status) );
 454     return !status;
 455 }
 456
 457
 458 /**************************************************************************
 459  *           UnlockFileEx   (KERNEL32.@)
 460  */
 461 BOOL WINAPI UnlockFileEx( HANDLE hFile, DWORD reserved, DWORD count_low, DWORD count_high,
 462                           LPOVERLAPPED overlapped )
 463 {
 464     if (reserved)
 465     {
 466         SetLastError( ERROR_INVALID_PARAMETER );
 467         return FALSE;
 468     }
 469     if (overlapped->hEvent) FIXME("Unimplemented overlapped operation\n");
 470
 471     return UnlockFile( hFile, overlapped->Offset, overlapped->OffsetHigh, count_low, count_high );
 472 }
 473
 474
 475 /***********************************************************************
 476  *           Win32HandleToDosFileHandle   (KERNEL32.21)
 477  *
 478  * Allocate a DOS handle for a Win32 handle. The Win32 handle is no
 479  * longer valid after this function (even on failure).
 480  *
 481  * Note: this is not exactly right, since on Win95 the Win32 handles
 482  *       are on top of DOS handles and we do it the other way
 483  *       around. Should be good enough though.
 484  */
 485 HFILE WINAPI Win32HandleToDosFileHandle( HANDLE handle )
 486 {
 487     int i;
 488
 489     if (!handle || (handle == INVALID_HANDLE_VALUE))
 490         return HFILE_ERROR;
 491
 492     FILE_InitProcessDosHandles();
 493     for (i = 0; i < DOS_TABLE_SIZE; i++)
 494         if (!dos_handles[i])
 495         {
 496             dos_handles[i] = handle;
 497             TRACE("Got %d for h32 %p\n", i, handle );
 498             return (HFILE)i;
 499         }
 500     CloseHandle( handle );
 501     SetLastError( ERROR_TOO_MANY_OPEN_FILES );
 502     return HFILE_ERROR;
 503 }
 504
 505
 506 /***********************************************************************
 507  *           DosFileHandleToWin32Handle   (KERNEL32.20)
 508  *
 509  * Return the Win32 handle for a DOS handle.
 510  *
 511  * Note: this is not exactly right, since on Win95 the Win32 handles
 512  *       are on top of DOS handles and we do it the other way
 513  *       around. Should be good enough though.
 514  */
 515 HANDLE WINAPI DosFileHandleToWin32Handle( HFILE handle )
 516 {
 517     HFILE16 hfile = (HFILE16)handle;
 518     if (hfile < 5) FILE_InitProcessDosHandles();
 519     if ((hfile >= DOS_TABLE_SIZE) || !dos_handles[hfile])
 520     {
 521         SetLastError( ERROR_INVALID_HANDLE );
 522         return INVALID_HANDLE_VALUE;
 523     }
 524     return dos_handles[hfile];
 525 }
 526
 527
 528 /***********************************************************************
 529  *           DisposeLZ32Handle   (KERNEL32.22)
 530  *
 531  * Note: this is not entirely correct, we should only close the
 532  *       32-bit handle and not the 16-bit one, but we cannot do
 533  *       this because of the way our DOS handles are implemented.
 534  *       It shouldn't break anything though.
 535  */
 536 void WINAPI DisposeLZ32Handle( HANDLE handle )
 537 {
 538     int i;
 539
 540     if (!handle || (handle == INVALID_HANDLE_VALUE)) return;
 541
 542     for (i = 5; i < DOS_TABLE_SIZE; i++)
 543         if (dos_handles[i] == handle)
 544         {
 545             dos_handles[i] = 0;
 546             CloseHandle( handle );
 547             break;
 548         }
 549 }
 550
 551 /**************************************************************************
 552  *                      Operations on file names                          *
 553  **************************************************************************/
 554
 555 /**************************************************************************
 556  *           ReplaceFileW   (KERNEL32.@)
 557  *           ReplaceFile    (KERNEL32.@)
 558  */
 559 BOOL WINAPI ReplaceFileW(LPCWSTR lpReplacedFileName,LPCWSTR lpReplacementFileName,
 560                          LPCWSTR lpBackupFileName, DWORD dwReplaceFlags,
 561                          LPVOID lpExclude, LPVOID lpReserved)
 562 {
 563     FIXME("(%s,%s,%s,%08lx,%p,%p) stub\n",debugstr_w(lpReplacedFileName),debugstr_w(lpReplacementFileName),
 564                                           debugstr_w(lpBackupFileName),dwReplaceFlags,lpExclude,lpReserved);
 565     SetLastError(ERROR_UNABLE_TO_MOVE_REPLACEMENT);
 566     return FALSE;
 567 }
 568
 569
 570 /**************************************************************************
 571  *           ReplaceFileA (KERNEL32.@)
 572  */
 573 BOOL WINAPI ReplaceFileA(LPCSTR lpReplacedFileName,LPCSTR lpReplacementFileName,
 574                          LPCSTR lpBackupFileName, DWORD dwReplaceFlags,
 575                          LPVOID lpExclude, LPVOID lpReserved)
 576 {
 577     FIXME("(%s,%s,%s,%08lx,%p,%p) stub\n",lpReplacedFileName,lpReplacementFileName,
 578                                           lpBackupFileName,dwReplaceFlags,lpExclude,lpReserved);
 579     SetLastError(ERROR_UNABLE_TO_MOVE_REPLACEMENT);
 580     return FALSE;
 581 }
 582
 583
 584 /*************************************************************************
 585  *           FindFirstFileExW  (KERNEL32.@)
 586  */
 587 HANDLE WINAPI FindFirstFileExW( LPCWSTR filename, FINDEX_INFO_LEVELS level,
 588                                 LPVOID data, FINDEX_SEARCH_OPS search_op,
 589                                 LPVOID filter, DWORD flags)
 590 {
 591     WCHAR buffer[MAX_PATH];
 592     WCHAR *mask, *tmp = buffer;
 593     FIND_FIRST_INFO *info = NULL;
 594     DWORD size;
 595
 596     if ((search_op != FindExSearchNameMatch) || (flags != 0))
 597     {
 598         FIXME("options not implemented 0x%08x 0x%08lx\n", search_op, flags );
 599         return INVALID_HANDLE_VALUE;
 600     }
 601     if (level != FindExInfoStandard)
 602     {
 603         FIXME("info level %d not implemented\n", level );
 604         return INVALID_HANDLE_VALUE;
 605     }
 606     size = RtlGetFullPathName_U( filename, sizeof(buffer), buffer, &mask );
 607     if (!size)
 608     {
 609         SetLastError( ERROR_PATH_NOT_FOUND );
 610         return INVALID_HANDLE_VALUE;
 611     }
 612     if (size > sizeof(buffer))
 613     {
 614         tmp = HeapAlloc( GetProcessHeap(), 0, size );
 615         if (!tmp)
 616         {
 617             SetLastError( ERROR_NOT_ENOUGH_MEMORY );
 618             return INVALID_HANDLE_VALUE;
 619         }
 620         size = RtlGetFullPathName_U( filename, size, tmp, &mask );
 621     }
 622
 623     if (!mask || !*mask)
 624     {
 625         SetLastError( ERROR_FILE_NOT_FOUND );
 626         goto error;
 627     }
 628
 629     if (!(info = HeapAlloc( GetProcessHeap(), 0, sizeof(*info))))
 630     {
 631         SetLastError( ERROR_NOT_ENOUGH_MEMORY );
 632         goto error;
 633     }
 634
 635     if (!RtlCreateUnicodeString( &info->mask, mask ))
 636     {
 637         SetLastError( ERROR_NOT_ENOUGH_MEMORY );
 638         goto error;
 639     }
 640     *mask = 0;
 641
 642     /* check if path is the root of the drive */
 643     info->is_root = FALSE;
 644     if (tmp[0] && tmp[1] == ':')
 645     {
 646         WCHAR *p = tmp + 2;
 647         while (*p == '\\') p++;
 648         info->is_root = (*p == 0);
 649     }
 650
 651     info->handle = CreateFileW( tmp, GENERIC_READ, FILE_SHARE_READ|FILE_SHARE_WRITE, NULL,
 652                                 OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, 0 );
 653     if (info->handle == INVALID_HANDLE_VALUE)
 654     {
 655         RtlFreeUnicodeString( &info->mask );
 656         goto error;
 657     }
 658
 659     RtlInitializeCriticalSection( &info->cs );
 660     info->data_pos = 0;
 661     info->data_len = 0;
 662     if (tmp != buffer) HeapFree( GetProcessHeap(), 0, tmp );
 663
 664     if (!FindNextFileW( (HANDLE)info, data ))
 665     {
 666         TRACE( "%s not found\n", debugstr_w(filename) );
 667         FindClose( (HANDLE)info );
 668         SetLastError( ERROR_FILE_NOT_FOUND );
 669         return INVALID_HANDLE_VALUE;
 670     }
 671     return (HANDLE)info;
 672
 673 error:
 674     if (tmp != buffer) HeapFree( GetProcessHeap(), 0, tmp );
 675     if (info) HeapFree( GetProcessHeap(), 0, info );
 676     return INVALID_HANDLE_VALUE;
 677 }
 678
 679
 680 /*************************************************************************
 681  *           FindNextFileW   (KERNEL32.@)
 682  */
 683 BOOL WINAPI FindNextFileW( HANDLE handle, WIN32_FIND_DATAW *data )
 684 {
 685     FIND_FIRST_INFO *info;
 686     FILE_BOTH_DIR_INFORMATION *dir_info;
 687     BOOL ret = FALSE;
 688
 689     if (handle == INVALID_HANDLE_VALUE)
 690     {
 691         SetLastError( ERROR_INVALID_HANDLE );
 692         return ret;
 693     }
 694     info = (FIND_FIRST_INFO *)handle;
 695
 696     RtlEnterCriticalSection( &info->cs );
 697
 698     for (;;)
 699     {
 700         if (info->data_pos >= info->data_len)  /* need to read some more data */
 701         {
 702             IO_STATUS_BLOCK io;
 703
 704             NtQueryDirectoryFile( info->handle, 0, NULL, NULL, &io, info->data, sizeof(info->data),
 705                                   FileBothDirectoryInformation, FALSE, &info->mask, FALSE );
 706             if (io.u.Status)
 707             {
 708                 SetLastError( RtlNtStatusToDosError( io.u.Status ) );
 709                 break;
 710             }
 711             info->data_len = io.Information;
 712             info->data_pos = 0;
 713         }
 714
 715         dir_info = (FILE_BOTH_DIR_INFORMATION *)(info->data + info->data_pos);
 716
 717         if (dir_info->NextEntryOffset) info->data_pos += dir_info->NextEntryOffset;
 718         else info->data_pos = info->data_len;
 719
 720         /* don't return '.' and '..' in the root of the drive */
 721         if (info->is_root)
 722         {
 723             if (dir_info->FileNameLength == sizeof(WCHAR) && dir_info->FileName[0] == '.') continue;
 724             if (dir_info->FileNameLength == 2 * sizeof(WCHAR) &&
 725                 dir_info->FileName[0] == '.' && dir_info->FileName[1] == '.') continue;
 726         }
 727
 728         data->dwFileAttributes = dir_info->FileAttributes;
 729         data->ftCreationTime   = *(FILETIME *)&dir_info->CreationTime;
 730         data->ftLastAccessTime = *(FILETIME *)&dir_info->LastAccessTime;
 731         data->ftLastWriteTime  = *(FILETIME *)&dir_info->LastWriteTime;
 732         data->nFileSizeHigh    = dir_info->EndOfFile.QuadPart >> 32;
 733         data->nFileSizeLow     = (DWORD)dir_info->EndOfFile.QuadPart;
 734         data->dwReserved0      = 0;
 735         data->dwReserved1      = 0;
 736
 737         memcpy( data->cFileName, dir_info->FileName, dir_info->FileNameLength );
 738         data->cFileName[dir_info->FileNameLength/sizeof(WCHAR)] = 0;
 739         memcpy( data->cAlternateFileName, dir_info->ShortName, dir_info->ShortNameLength );
 740         data->cAlternateFileName[dir_info->ShortNameLength/sizeof(WCHAR)] = 0;
 741
 742         TRACE("returning %s (%s)\n",
 743               debugstr_w(data->cFileName), debugstr_w(data->cAlternateFileName) );
 744
 745         ret = TRUE;
 746         break;
 747     }
 748
 749     RtlLeaveCriticalSection( &info->cs );
 750     return ret;
 751 }
 752
 753
 754 /*************************************************************************
 755  *           FindClose   (KERNEL32.@)
 756  */
 757 BOOL WINAPI FindClose( HANDLE handle )
 758 {
 759     FIND_FIRST_INFO *info = (FIND_FIRST_INFO *)handle;
 760
 761     if (!handle || handle == INVALID_HANDLE_VALUE) goto error;
 762
 763     __TRY
 764     {
 765         RtlEnterCriticalSection( &info->cs );
 766         if (info->handle) CloseHandle( info->handle );
 767         info->handle = 0;
 768         RtlFreeUnicodeString( &info->mask );
 769         info->mask.Buffer = NULL;
 770         info->data_pos = 0;
 771         info->data_len = 0;
 772     }
 773     __EXCEPT(page_fault)
 774     {
 775         WARN("Illegal handle %p\n", handle);
 776         SetLastError( ERROR_INVALID_HANDLE );
 777         return FALSE;
 778     }
 779     __ENDTRY
 780
 781     RtlLeaveCriticalSection( &info->cs );
 782     RtlDeleteCriticalSection( &info->cs );
 783     HeapFree(GetProcessHeap(), 0, info);
 784     return TRUE;
 785
 786  error:
 787     SetLastError( ERROR_INVALID_HANDLE );
 788     return FALSE;
 789 }
 790
 791
 792 /*************************************************************************
 793  *           FindFirstFileA   (KERNEL32.@)
 794  */
 795 HANDLE WINAPI FindFirstFileA( LPCSTR lpFileName, WIN32_FIND_DATAA *lpFindData )
 796 {
 797     return FindFirstFileExA(lpFileName, FindExInfoStandard, lpFindData,
 798                             FindExSearchNameMatch, NULL, 0);
 799 }
 800
 801 /*************************************************************************
 802  *           FindFirstFileExA   (KERNEL32.@)
 803  */
 804 HANDLE WINAPI FindFirstFileExA( LPCSTR lpFileName, FINDEX_INFO_LEVELS fInfoLevelId,
 805                                 LPVOID lpFindFileData, FINDEX_SEARCH_OPS fSearchOp,
 806                                 LPVOID lpSearchFilter, DWORD dwAdditionalFlags)
 807 {
 808     HANDLE handle;
 809     WIN32_FIND_DATAA *dataA;
 810     WIN32_FIND_DATAW dataW;
 811     UNICODE_STRING pathW;
 812
 813     if (!lpFileName)
 814     {
 815         SetLastError(ERROR_PATH_NOT_FOUND);
 816         return INVALID_HANDLE_VALUE;
 817     }
 818
 819     if (!RtlCreateUnicodeStringFromAsciiz(&pathW, lpFileName))
 820     {
 821         SetLastError(ERROR_NOT_ENOUGH_MEMORY);
 822         return INVALID_HANDLE_VALUE;
 823     }
 824
 825     handle = FindFirstFileExW(pathW.Buffer, fInfoLevelId, &dataW, fSearchOp, lpSearchFilter, dwAdditionalFlags);
 826     RtlFreeUnicodeString(&pathW);
 827     if (handle == INVALID_HANDLE_VALUE) return handle;
 828
 829     dataA = (WIN32_FIND_DATAA *) lpFindFileData;
 830     dataA->dwFileAttributes = dataW.dwFileAttributes;
 831     dataA->ftCreationTime   = dataW.ftCreationTime;
 832     dataA->ftLastAccessTime = dataW.ftLastAccessTime;
 833     dataA->ftLastWriteTime  = dataW.ftLastWriteTime;
 834     dataA->nFileSizeHigh    = dataW.nFileSizeHigh;
 835     dataA->nFileSizeLow     = dataW.nFileSizeLow;
 836     WideCharToMultiByte( CP_ACP, 0, dataW.cFileName, -1,
 837                          dataA->cFileName, sizeof(dataA->cFileName), NULL, NULL );
 838     WideCharToMultiByte( CP_ACP, 0, dataW.cAlternateFileName, -1,
 839                          dataA->cAlternateFileName, sizeof(dataA->cAlternateFileName), NULL, NULL );
 840     return handle;
 841 }
 842
 843
 844 /*************************************************************************
 845  *           FindFirstFileW   (KERNEL32.@)
 846  */
 847 HANDLE WINAPI FindFirstFileW( LPCWSTR lpFileName, WIN32_FIND_DATAW *lpFindData )
 848 {
 849     return FindFirstFileExW(lpFileName, FindExInfoStandard, lpFindData,
 850                             FindExSearchNameMatch, NULL, 0);
 851 }
 852
 853
 854 /*************************************************************************
 855  *           FindNextFileA   (KERNEL32.@)
 856  */
 857 BOOL WINAPI FindNextFileA( HANDLE handle, WIN32_FIND_DATAA *data )
 858 {
 859     WIN32_FIND_DATAW dataW;
 860
 861     if (!FindNextFileW( handle, &dataW )) return FALSE;
 862     data->dwFileAttributes = dataW.dwFileAttributes;
 863     data->ftCreationTime   = dataW.ftCreationTime;
 864     data->ftLastAccessTime = dataW.ftLastAccessTime;
 865     data->ftLastWriteTime  = dataW.ftLastWriteTime;
 866     data->nFileSizeHigh    = dataW.nFileSizeHigh;
 867     data->nFileSizeLow     = dataW.nFileSizeLow;
 868     WideCharToMultiByte( CP_ACP, 0, dataW.cFileName, -1,
 869                          data->cFileName, sizeof(data->cFileName), NULL, NULL );
 870     WideCharToMultiByte( CP_ACP, 0, dataW.cAlternateFileName, -1,
 871                          data->cAlternateFileName,
 872                          sizeof(data->cAlternateFileName), NULL, NULL );
 873     return TRUE;
 874 }
 875
 876
 877 /***********************************************************************
 878  *           OpenFile   (KERNEL32.@)
 879  */
 880 HFILE WINAPI OpenFile( LPCSTR name, OFSTRUCT *ofs, UINT mode )
 881 {
 882     HANDLE handle;
 883     FILETIME filetime;
 884     WORD filedatetime[2];
 885
 886     if (!ofs) return HFILE_ERROR;
 887
 888     TRACE("%s %s %s %s%s%s%s%s%s%s%s%s\n",name,
 889           ((mode & 0x3 )==OF_READ)?"OF_READ":
 890           ((mode & 0x3 )==OF_WRITE)?"OF_WRITE":
 891           ((mode & 0x3 )==OF_READWRITE)?"OF_READWRITE":"unknown",
 892           ((mode & 0x70 )==OF_SHARE_COMPAT)?"OF_SHARE_COMPAT":
 893           ((mode & 0x70 )==OF_SHARE_DENY_NONE)?"OF_SHARE_DENY_NONE":
 894           ((mode & 0x70 )==OF_SHARE_DENY_READ)?"OF_SHARE_DENY_READ":
 895           ((mode & 0x70 )==OF_SHARE_DENY_WRITE)?"OF_SHARE_DENY_WRITE":
 896           ((mode & 0x70 )==OF_SHARE_EXCLUSIVE)?"OF_SHARE_EXCLUSIVE":"unknown",
 897           ((mode & OF_PARSE )==OF_PARSE)?"OF_PARSE ":"",
 898           ((mode & OF_DELETE )==OF_DELETE)?"OF_DELETE ":"",
 899           ((mode & OF_VERIFY )==OF_VERIFY)?"OF_VERIFY ":"",
 900           ((mode & OF_SEARCH )==OF_SEARCH)?"OF_SEARCH ":"",
 901           ((mode & OF_CANCEL )==OF_CANCEL)?"OF_CANCEL ":"",
 902           ((mode & OF_CREATE )==OF_CREATE)?"OF_CREATE ":"",
 903           ((mode & OF_PROMPT )==OF_PROMPT)?"OF_PROMPT ":"",
 904           ((mode & OF_EXIST )==OF_EXIST)?"OF_EXIST ":"",
 905           ((mode & OF_REOPEN )==OF_REOPEN)?"OF_REOPEN ":""
 906         );
 907
 908
 909     ofs->cBytes = sizeof(OFSTRUCT);
 910     ofs->nErrCode = 0;
 911     if (mode & OF_REOPEN) name = ofs->szPathName;
 912
 913     if (!name) return HFILE_ERROR;
 914
 915     TRACE("%s %04x\n", name, mode );
 916
 917     /* the watcom 10.6 IDE relies on a valid path returned in ofs->szPathName
 918        Are there any cases where getting the path here is wrong?
 919        Uwe Bonnes 1997 Apr 2 */
 920     if (!GetFullPathNameA( name, sizeof(ofs->szPathName), ofs->szPathName, NULL )) goto error;
 921
 922     /* OF_PARSE simply fills the structure */
 923
 924     if (mode & OF_PARSE)
 925     {
 926         ofs->fFixedDisk = (GetDriveTypeA( ofs->szPathName ) != DRIVE_REMOVABLE);
 927         TRACE("(%s): OF_PARSE, res = '%s'\n", name, ofs->szPathName );
 928         return 0;
 929     }
 930
 931     /* OF_CREATE is completely different from all other options, so
 932        handle it first */
 933
 934     if (mode & OF_CREATE)
 935     {
 936         DWORD access, sharing;
 937         FILE_ConvertOFMode( mode, &access, &sharing );
 938         if ((handle = CreateFileA( name, GENERIC_READ | GENERIC_WRITE,
 939                                    sharing, NULL, CREATE_ALWAYS,
 940                                    FILE_ATTRIBUTE_NORMAL, 0 )) == INVALID_HANDLE_VALUE)
 941             goto error;
 942     }
 943     else
 944     {
 945         /* Now look for the file */
 946
 947         if (!SearchPathA( NULL, name, NULL, sizeof(ofs->szPathName), ofs->szPathName, NULL ))
 948             goto error;
 949
 950         TRACE("found %s\n", debugstr_a(ofs->szPathName) );
 951
 952         if (mode & OF_DELETE)
 953         {
 954             if (!DeleteFileA( ofs->szPathName )) goto error;
 955             TRACE("(%s): OF_DELETE return = OK\n", name);
 956             return TRUE;
 957         }
 958
 959         handle = (HANDLE)_lopen( ofs->szPathName, mode );
 960         if (handle == INVALID_HANDLE_VALUE) goto error;
 961
 962         GetFileTime( handle, NULL, NULL, &filetime );
 963         FileTimeToDosDateTime( &filetime, &filedatetime[0], &filedatetime[1] );
 964         if ((mode & OF_VERIFY) && (mode & OF_REOPEN))
 965         {
 966             if (ofs->Reserved1 != filedatetime[0] || ofs->Reserved2 != filedatetime[1] )
 967             {
 968                 CloseHandle( handle );
 969                 WARN("(%s): OF_VERIFY failed\n", name );
 970                 /* FIXME: what error here? */
 971                 SetLastError( ERROR_FILE_NOT_FOUND );
 972                 goto error;
 973             }
 974         }
 975         ofs->Reserved1 = filedatetime[0];
 976         ofs->Reserved2 = filedatetime[1];
 977     }
 978     TRACE("(%s): OK, return = %p\n", name, handle );
 979     if (mode & OF_EXIST)  /* Return TRUE instead of a handle */
 980     {
 981         CloseHandle( handle );
 982         return TRUE;
 983     }
 984     else return (HFILE)handle;
 985
 986 error:  /* We get here if there was an error opening the file */
 987     ofs->nErrCode = GetLastError();
 988     WARN("(%s): return = HFILE_ERROR error= %d\n", name,ofs->nErrCode );
 989     return HFILE_ERROR;
 990 }