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  *           DeleteFileW   (KERNEL32.@)
 557  */
 558 BOOL WINAPI DeleteFileW( LPCWSTR path )
 559 {
 560     HANDLE hFile;
 561
 562     TRACE("%s\n", debugstr_w(path) );
 563
 564     hFile = CreateFileW( path, GENERIC_READ | GENERIC_WRITE,
 565                          FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
 566                          NULL, OPEN_EXISTING, FILE_FLAG_DELETE_ON_CLOSE, 0 );
 567     if (hFile == INVALID_HANDLE_VALUE) return FALSE;
 568
 569     CloseHandle(hFile);  /* last close will delete the file */
 570     return TRUE;
 571 }
 572
 573
 574 /***********************************************************************
 575  *           DeleteFileA   (KERNEL32.@)
 576  */
 577 BOOL WINAPI DeleteFileA( LPCSTR path )
 578 {
 579     UNICODE_STRING pathW;
 580     BOOL ret = FALSE;
 581
 582     if (RtlCreateUnicodeStringFromAsciiz(&pathW, path))
 583     {
 584         ret = DeleteFileW(pathW.Buffer);
 585         RtlFreeUnicodeString(&pathW);
 586     }
 587     else
 588         SetLastError(ERROR_NOT_ENOUGH_MEMORY);
 589     return ret;
 590 }
 591
 592
 593 /**************************************************************************
 594  *           ReplaceFileW   (KERNEL32.@)
 595  *           ReplaceFile    (KERNEL32.@)
 596  */
 597 BOOL WINAPI ReplaceFileW(LPCWSTR lpReplacedFileName,LPCWSTR lpReplacementFileName,
 598                          LPCWSTR lpBackupFileName, DWORD dwReplaceFlags,
 599                          LPVOID lpExclude, LPVOID lpReserved)
 600 {
 601     FIXME("(%s,%s,%s,%08lx,%p,%p) stub\n",debugstr_w(lpReplacedFileName),debugstr_w(lpReplacementFileName),
 602                                           debugstr_w(lpBackupFileName),dwReplaceFlags,lpExclude,lpReserved);
 603     SetLastError(ERROR_UNABLE_TO_MOVE_REPLACEMENT);
 604     return FALSE;
 605 }
 606
 607
 608 /**************************************************************************
 609  *           ReplaceFileA (KERNEL32.@)
 610  */
 611 BOOL WINAPI ReplaceFileA(LPCSTR lpReplacedFileName,LPCSTR lpReplacementFileName,
 612                          LPCSTR lpBackupFileName, DWORD dwReplaceFlags,
 613                          LPVOID lpExclude, LPVOID lpReserved)
 614 {
 615     FIXME("(%s,%s,%s,%08lx,%p,%p) stub\n",lpReplacedFileName,lpReplacementFileName,
 616                                           lpBackupFileName,dwReplaceFlags,lpExclude,lpReserved);
 617     SetLastError(ERROR_UNABLE_TO_MOVE_REPLACEMENT);
 618     return FALSE;
 619 }
 620
 621
 622 /*************************************************************************
 623  *           FindFirstFileExW  (KERNEL32.@)
 624  */
 625 HANDLE WINAPI FindFirstFileExW( LPCWSTR filename, FINDEX_INFO_LEVELS level,
 626                                 LPVOID data, FINDEX_SEARCH_OPS search_op,
 627                                 LPVOID filter, DWORD flags)
 628 {
 629     WCHAR buffer[MAX_PATH];
 630     WCHAR *mask, *tmp = buffer;
 631     FIND_FIRST_INFO *info = NULL;
 632     DWORD size;
 633
 634     if ((search_op != FindExSearchNameMatch) || (flags != 0))
 635     {
 636         FIXME("options not implemented 0x%08x 0x%08lx\n", search_op, flags );
 637         return INVALID_HANDLE_VALUE;
 638     }
 639     if (level != FindExInfoStandard)
 640     {
 641         FIXME("info level %d not implemented\n", level );
 642         return INVALID_HANDLE_VALUE;
 643     }
 644     size = RtlGetFullPathName_U( filename, sizeof(buffer), buffer, &mask );
 645     if (!size)
 646     {
 647         SetLastError( ERROR_PATH_NOT_FOUND );
 648         return INVALID_HANDLE_VALUE;
 649     }
 650     if (size > sizeof(buffer))
 651     {
 652         tmp = HeapAlloc( GetProcessHeap(), 0, size );
 653         if (!tmp)
 654         {
 655             SetLastError( ERROR_NOT_ENOUGH_MEMORY );
 656             return INVALID_HANDLE_VALUE;
 657         }
 658         size = RtlGetFullPathName_U( filename, size, tmp, &mask );
 659     }
 660
 661     if (!mask || !*mask)
 662     {
 663         SetLastError( ERROR_FILE_NOT_FOUND );
 664         goto error;
 665     }
 666
 667     if (!(info = HeapAlloc( GetProcessHeap(), 0, sizeof(*info))))
 668     {
 669         SetLastError( ERROR_NOT_ENOUGH_MEMORY );
 670         goto error;
 671     }
 672
 673     if (!RtlCreateUnicodeString( &info->mask, mask ))
 674     {
 675         SetLastError( ERROR_NOT_ENOUGH_MEMORY );
 676         goto error;
 677     }
 678     *mask = 0;
 679
 680     /* check if path is the root of the drive */
 681     info->is_root = FALSE;
 682     if (tmp[0] && tmp[1] == ':')
 683     {
 684         WCHAR *p = tmp + 2;
 685         while (*p == '\\') p++;
 686         info->is_root = (*p == 0);
 687     }
 688
 689     info->handle = CreateFileW( tmp, GENERIC_READ, FILE_SHARE_READ|FILE_SHARE_WRITE, NULL,
 690                                 OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, 0 );
 691     if (info->handle == INVALID_HANDLE_VALUE)
 692     {
 693         RtlFreeUnicodeString( &info->mask );
 694         goto error;
 695     }
 696
 697     RtlInitializeCriticalSection( &info->cs );
 698     info->data_pos = 0;
 699     info->data_len = 0;
 700     if (tmp != buffer) HeapFree( GetProcessHeap(), 0, tmp );
 701
 702     if (!FindNextFileW( (HANDLE)info, data ))
 703     {
 704         TRACE( "%s not found\n", debugstr_w(filename) );
 705         FindClose( (HANDLE)info );
 706         SetLastError( ERROR_FILE_NOT_FOUND );
 707         return INVALID_HANDLE_VALUE;
 708     }
 709     return (HANDLE)info;
 710
 711 error:
 712     if (tmp != buffer) HeapFree( GetProcessHeap(), 0, tmp );
 713     if (info) HeapFree( GetProcessHeap(), 0, info );
 714     return INVALID_HANDLE_VALUE;
 715 }
 716
 717
 718 /*************************************************************************
 719  *           FindNextFileW   (KERNEL32.@)
 720  */
 721 BOOL WINAPI FindNextFileW( HANDLE handle, WIN32_FIND_DATAW *data )
 722 {
 723     FIND_FIRST_INFO *info;
 724     FILE_BOTH_DIR_INFORMATION *dir_info;
 725     BOOL ret = FALSE;
 726
 727     if (handle == INVALID_HANDLE_VALUE)
 728     {
 729         SetLastError( ERROR_INVALID_HANDLE );
 730         return ret;
 731     }
 732     info = (FIND_FIRST_INFO *)handle;
 733
 734     RtlEnterCriticalSection( &info->cs );
 735
 736     for (;;)
 737     {
 738         if (info->data_pos >= info->data_len)  /* need to read some more data */
 739         {
 740             IO_STATUS_BLOCK io;
 741
 742             NtQueryDirectoryFile( info->handle, 0, NULL, NULL, &io, info->data, sizeof(info->data),
 743                                   FileBothDirectoryInformation, FALSE, &info->mask, FALSE );
 744             if (io.u.Status)
 745             {
 746                 SetLastError( RtlNtStatusToDosError( io.u.Status ) );
 747                 break;
 748             }
 749             info->data_len = io.Information;
 750             info->data_pos = 0;
 751         }
 752
 753         dir_info = (FILE_BOTH_DIR_INFORMATION *)(info->data + info->data_pos);
 754
 755         if (dir_info->NextEntryOffset) info->data_pos += dir_info->NextEntryOffset;
 756         else info->data_pos = info->data_len;
 757
 758         /* don't return '.' and '..' in the root of the drive */
 759         if (info->is_root)
 760         {
 761             if (dir_info->FileNameLength == sizeof(WCHAR) && dir_info->FileName[0] == '.') continue;
 762             if (dir_info->FileNameLength == 2 * sizeof(WCHAR) &&
 763                 dir_info->FileName[0] == '.' && dir_info->FileName[1] == '.') continue;
 764         }
 765
 766         data->dwFileAttributes = dir_info->FileAttributes;
 767         data->ftCreationTime   = *(FILETIME *)&dir_info->CreationTime;
 768         data->ftLastAccessTime = *(FILETIME *)&dir_info->LastAccessTime;
 769         data->ftLastWriteTime  = *(FILETIME *)&dir_info->LastWriteTime;
 770         data->nFileSizeHigh    = dir_info->EndOfFile.QuadPart >> 32;
 771         data->nFileSizeLow     = (DWORD)dir_info->EndOfFile.QuadPart;
 772         data->dwReserved0      = 0;
 773         data->dwReserved1      = 0;
 774
 775         memcpy( data->cFileName, dir_info->FileName, dir_info->FileNameLength );
 776         data->cFileName[dir_info->FileNameLength/sizeof(WCHAR)] = 0;
 777         memcpy( data->cAlternateFileName, dir_info->ShortName, dir_info->ShortNameLength );
 778         data->cAlternateFileName[dir_info->ShortNameLength/sizeof(WCHAR)] = 0;
 779
 780         TRACE("returning %s (%s)\n",
 781               debugstr_w(data->cFileName), debugstr_w(data->cAlternateFileName) );
 782
 783         ret = TRUE;
 784         break;
 785     }
 786
 787     RtlLeaveCriticalSection( &info->cs );
 788     return ret;
 789 }
 790
 791
 792 /*************************************************************************
 793  *           FindClose   (KERNEL32.@)
 794  */
 795 BOOL WINAPI FindClose( HANDLE handle )
 796 {
 797     FIND_FIRST_INFO *info = (FIND_FIRST_INFO *)handle;
 798
 799     if (!handle || handle == INVALID_HANDLE_VALUE) goto error;
 800
 801     __TRY
 802     {
 803         RtlEnterCriticalSection( &info->cs );
 804         if (info->handle) CloseHandle( info->handle );
 805         info->handle = 0;
 806         RtlFreeUnicodeString( &info->mask );
 807         info->mask.Buffer = NULL;
 808         info->data_pos = 0;
 809         info->data_len = 0;
 810     }
 811     __EXCEPT(page_fault)
 812     {
 813         WARN("Illegal handle %p\n", handle);
 814         SetLastError( ERROR_INVALID_HANDLE );
 815         return FALSE;
 816     }
 817     __ENDTRY
 818
 819     RtlLeaveCriticalSection( &info->cs );
 820     RtlDeleteCriticalSection( &info->cs );
 821     HeapFree(GetProcessHeap(), 0, info);
 822     return TRUE;
 823
 824  error:
 825     SetLastError( ERROR_INVALID_HANDLE );
 826     return FALSE;
 827 }
 828
 829
 830 /*************************************************************************
 831  *           FindFirstFileA   (KERNEL32.@)
 832  */
 833 HANDLE WINAPI FindFirstFileA( LPCSTR lpFileName, WIN32_FIND_DATAA *lpFindData )
 834 {
 835     return FindFirstFileExA(lpFileName, FindExInfoStandard, lpFindData,
 836                             FindExSearchNameMatch, NULL, 0);
 837 }
 838
 839 /*************************************************************************
 840  *           FindFirstFileExA   (KERNEL32.@)
 841  */
 842 HANDLE WINAPI FindFirstFileExA( LPCSTR lpFileName, FINDEX_INFO_LEVELS fInfoLevelId,
 843                                 LPVOID lpFindFileData, FINDEX_SEARCH_OPS fSearchOp,
 844                                 LPVOID lpSearchFilter, DWORD dwAdditionalFlags)
 845 {
 846     HANDLE handle;
 847     WIN32_FIND_DATAA *dataA;
 848     WIN32_FIND_DATAW dataW;
 849     UNICODE_STRING pathW;
 850
 851     if (!lpFileName)
 852     {
 853         SetLastError(ERROR_PATH_NOT_FOUND);
 854         return INVALID_HANDLE_VALUE;
 855     }
 856
 857     if (!RtlCreateUnicodeStringFromAsciiz(&pathW, lpFileName))
 858     {
 859         SetLastError(ERROR_NOT_ENOUGH_MEMORY);
 860         return INVALID_HANDLE_VALUE;
 861     }
 862
 863     handle = FindFirstFileExW(pathW.Buffer, fInfoLevelId, &dataW, fSearchOp, lpSearchFilter, dwAdditionalFlags);
 864     RtlFreeUnicodeString(&pathW);
 865     if (handle == INVALID_HANDLE_VALUE) return handle;
 866
 867     dataA = (WIN32_FIND_DATAA *) lpFindFileData;
 868     dataA->dwFileAttributes = dataW.dwFileAttributes;
 869     dataA->ftCreationTime   = dataW.ftCreationTime;
 870     dataA->ftLastAccessTime = dataW.ftLastAccessTime;
 871     dataA->ftLastWriteTime  = dataW.ftLastWriteTime;
 872     dataA->nFileSizeHigh    = dataW.nFileSizeHigh;
 873     dataA->nFileSizeLow     = dataW.nFileSizeLow;
 874     WideCharToMultiByte( CP_ACP, 0, dataW.cFileName, -1,
 875                          dataA->cFileName, sizeof(dataA->cFileName), NULL, NULL );
 876     WideCharToMultiByte( CP_ACP, 0, dataW.cAlternateFileName, -1,
 877                          dataA->cAlternateFileName, sizeof(dataA->cAlternateFileName), NULL, NULL );
 878     return handle;
 879 }
 880
 881
 882 /*************************************************************************
 883  *           FindFirstFileW   (KERNEL32.@)
 884  */
 885 HANDLE WINAPI FindFirstFileW( LPCWSTR lpFileName, WIN32_FIND_DATAW *lpFindData )
 886 {
 887     return FindFirstFileExW(lpFileName, FindExInfoStandard, lpFindData,
 888                             FindExSearchNameMatch, NULL, 0);
 889 }
 890
 891
 892 /*************************************************************************
 893  *           FindNextFileA   (KERNEL32.@)
 894  */
 895 BOOL WINAPI FindNextFileA( HANDLE handle, WIN32_FIND_DATAA *data )
 896 {
 897     WIN32_FIND_DATAW dataW;
 898
 899     if (!FindNextFileW( handle, &dataW )) return FALSE;
 900     data->dwFileAttributes = dataW.dwFileAttributes;
 901     data->ftCreationTime   = dataW.ftCreationTime;
 902     data->ftLastAccessTime = dataW.ftLastAccessTime;
 903     data->ftLastWriteTime  = dataW.ftLastWriteTime;
 904     data->nFileSizeHigh    = dataW.nFileSizeHigh;
 905     data->nFileSizeLow     = dataW.nFileSizeLow;
 906     WideCharToMultiByte( CP_ACP, 0, dataW.cFileName, -1,
 907                          data->cFileName, sizeof(data->cFileName), NULL, NULL );
 908     WideCharToMultiByte( CP_ACP, 0, dataW.cAlternateFileName, -1,
 909                          data->cAlternateFileName,
 910                          sizeof(data->cAlternateFileName), NULL, NULL );
 911     return TRUE;
 912 }
 913
 914
 915 /***********************************************************************
 916  *           OpenFile   (KERNEL32.@)
 917  */
 918 HFILE WINAPI OpenFile( LPCSTR name, OFSTRUCT *ofs, UINT mode )
 919 {
 920     HANDLE handle;
 921     FILETIME filetime;
 922     WORD filedatetime[2];
 923
 924     if (!ofs) return HFILE_ERROR;
 925
 926     TRACE("%s %s %s %s%s%s%s%s%s%s%s%s\n",name,
 927           ((mode & 0x3 )==OF_READ)?"OF_READ":
 928           ((mode & 0x3 )==OF_WRITE)?"OF_WRITE":
 929           ((mode & 0x3 )==OF_READWRITE)?"OF_READWRITE":"unknown",
 930           ((mode & 0x70 )==OF_SHARE_COMPAT)?"OF_SHARE_COMPAT":
 931           ((mode & 0x70 )==OF_SHARE_DENY_NONE)?"OF_SHARE_DENY_NONE":
 932           ((mode & 0x70 )==OF_SHARE_DENY_READ)?"OF_SHARE_DENY_READ":
 933           ((mode & 0x70 )==OF_SHARE_DENY_WRITE)?"OF_SHARE_DENY_WRITE":
 934           ((mode & 0x70 )==OF_SHARE_EXCLUSIVE)?"OF_SHARE_EXCLUSIVE":"unknown",
 935           ((mode & OF_PARSE )==OF_PARSE)?"OF_PARSE ":"",
 936           ((mode & OF_DELETE )==OF_DELETE)?"OF_DELETE ":"",
 937           ((mode & OF_VERIFY )==OF_VERIFY)?"OF_VERIFY ":"",
 938           ((mode & OF_SEARCH )==OF_SEARCH)?"OF_SEARCH ":"",
 939           ((mode & OF_CANCEL )==OF_CANCEL)?"OF_CANCEL ":"",
 940           ((mode & OF_CREATE )==OF_CREATE)?"OF_CREATE ":"",
 941           ((mode & OF_PROMPT )==OF_PROMPT)?"OF_PROMPT ":"",
 942           ((mode & OF_EXIST )==OF_EXIST)?"OF_EXIST ":"",
 943           ((mode & OF_REOPEN )==OF_REOPEN)?"OF_REOPEN ":""
 944         );
 945
 946
 947     ofs->cBytes = sizeof(OFSTRUCT);
 948     ofs->nErrCode = 0;
 949     if (mode & OF_REOPEN) name = ofs->szPathName;
 950
 951     if (!name) return HFILE_ERROR;
 952
 953     TRACE("%s %04x\n", name, mode );
 954
 955     /* the watcom 10.6 IDE relies on a valid path returned in ofs->szPathName
 956        Are there any cases where getting the path here is wrong?
 957        Uwe Bonnes 1997 Apr 2 */
 958     if (!GetFullPathNameA( name, sizeof(ofs->szPathName), ofs->szPathName, NULL )) goto error;
 959
 960     /* OF_PARSE simply fills the structure */
 961
 962     if (mode & OF_PARSE)
 963     {
 964         ofs->fFixedDisk = (GetDriveTypeA( ofs->szPathName ) != DRIVE_REMOVABLE);
 965         TRACE("(%s): OF_PARSE, res = '%s'\n", name, ofs->szPathName );
 966         return 0;
 967     }
 968
 969     /* OF_CREATE is completely different from all other options, so
 970        handle it first */
 971
 972     if (mode & OF_CREATE)
 973     {
 974         DWORD access, sharing;
 975         FILE_ConvertOFMode( mode, &access, &sharing );
 976         if ((handle = CreateFileA( name, GENERIC_READ | GENERIC_WRITE,
 977                                    sharing, NULL, CREATE_ALWAYS,
 978                                    FILE_ATTRIBUTE_NORMAL, 0 )) == INVALID_HANDLE_VALUE)
 979             goto error;
 980     }
 981     else
 982     {
 983         /* Now look for the file */
 984
 985         if (!SearchPathA( NULL, name, NULL, sizeof(ofs->szPathName), ofs->szPathName, NULL ))
 986             goto error;
 987
 988         TRACE("found %s\n", debugstr_a(ofs->szPathName) );
 989
 990         if (mode & OF_DELETE)
 991         {
 992             if (!DeleteFileA( ofs->szPathName )) goto error;
 993             TRACE("(%s): OF_DELETE return = OK\n", name);
 994             return TRUE;
 995         }
 996
 997         handle = (HANDLE)_lopen( ofs->szPathName, mode );
 998         if (handle == INVALID_HANDLE_VALUE) goto error;
 999
1000         GetFileTime( handle, NULL, NULL, &filetime );
1001         FileTimeToDosDateTime( &filetime, &filedatetime[0], &filedatetime[1] );
1002         if ((mode & OF_VERIFY) && (mode & OF_REOPEN))
1003         {
1004             if (ofs->Reserved1 != filedatetime[0] || ofs->Reserved2 != filedatetime[1] )
1005             {
1006                 CloseHandle( handle );
1007                 WARN("(%s): OF_VERIFY failed\n", name );
1008                 /* FIXME: what error here? */
1009                 SetLastError( ERROR_FILE_NOT_FOUND );
1010                 goto error;
1011             }
1012         }
1013         ofs->Reserved1 = filedatetime[0];
1014         ofs->Reserved2 = filedatetime[1];
1015     }
1016     TRACE("(%s): OK, return = %p\n", name, handle );
1017     if (mode & OF_EXIST)  /* Return TRUE instead of a handle */
1018     {
1019         CloseHandle( handle );
1020         return TRUE;
1021     }
1022     else return (HFILE)handle;
1023
1024 error:  /* We get here if there was an error opening the file */
1025     ofs->nErrCode = GetLastError();
1026     WARN("(%s): return = HFILE_ERROR error= %d\n", name,ofs->nErrCode );
1027     return HFILE_ERROR;
1028 }