files/file.c

   1 /*
   2  * File handling functions
   3  *
   4  * Copyright 1993 John Burton
   5  * Copyright 1996 Alexandre Julliard
   6  */
   7
   8 #include <ctype.h>
   9 #include <errno.h>
  10 #include <fcntl.h>
  11 #include <stdio.h>
  12 #include <stdlib.h>
  13 #include <string.h>
  14 #include <sys/errno.h>
  15 #include <sys/stat.h>
  16 #include <time.h>
  17 #include <unistd.h>
  18 #include <utime.h>
  19
  20 #include "windows.h"
  21 #include "directory.h"
  22 #include "dos_fs.h"
  23 #include "drive.h"
  24 #include "global.h"
  25 #include "msdos.h"
  26 #include "options.h"
  27 #include "ldt.h"
  28 #include "task.h"
  29 #include "string32.h"
  30 #include "stddebug.h"
  31 #include "debug.h"
  32 #include "xmalloc.h"
  33
  34 #define MAX_OPEN_FILES 64  /* Max. open files for all tasks; must be <255 */
  35
  36 typedef struct tagDOS_FILE
  37 {
  38     struct tagDOS_FILE *next;
  39     int                 count;        /* Usage count (0 if free) */
  40     int                 unix_handle;
  41     int                 mode;
  42     char               *unix_name;
  43     WORD                filedate;
  44     WORD                filetime;
  45 } DOS_FILE;
  46
  47 /* Global files array */
  48 static DOS_FILE DOSFiles[MAX_OPEN_FILES];
  49
  50 static DOS_FILE *FILE_First = DOSFiles;
  51 static DOS_FILE *FILE_LastUsed = DOSFiles;
  52
  53 /* Small file handles array for boot-up, before the first PDB is created */
  54 #define MAX_BOOT_HANDLES  4
  55 static BYTE bootFileHandles[MAX_BOOT_HANDLES] = { 0xff, 0xff, 0xff, 0xff };
  56
  57 /***********************************************************************
  58  *           FILE_Alloc
  59  *
  60  * Allocate a DOS file.
  61  */
  62 static DOS_FILE *FILE_Alloc(void)
  63 {
  64     DOS_FILE *file = FILE_First;
  65     if (file) FILE_First = file->next;
  66     else if (FILE_LastUsed >= &DOSFiles[MAX_OPEN_FILES-1])
  67     {
  68         DOS_ERROR( ER_TooManyOpenFiles, EC_ProgramError, SA_Abort, EL_Disk );
  69         return NULL;
  70     }
  71     else file = ++FILE_LastUsed;
  72     file->count = 1;
  73     file->unix_handle = -1;
  74     file->unix_name = NULL;
  75     return file;
  76 }
  77
  78
  79 /***********************************************************************
  80  *           FILE_Close
  81  *
  82  * Close a DOS file.
  83  */
  84 static BOOL FILE_Close( DOS_FILE *file )
  85 {
  86     if (!file->count) return FALSE;
  87     if (--file->count > 0) return TRUE;
  88     /* Now really close the file */
  89     if (file->unix_handle != -1) close( file->unix_handle );
  90     if (file->unix_name) free( file->unix_name );
  91     file->next = FILE_First;
  92     FILE_First = file;
  93     return TRUE;
  94 }
  95
  96
  97 /***********************************************************************
  98  *           FILE_GetPDBFiles
  99  *
 100  * Return a pointer to the current PDB files array.
 101  */
 102 static void FILE_GetPDBFiles( BYTE **files, WORD *nbFiles )
 103 {
 104     PDB *pdb;
 105
 106     if ((pdb = (PDB *)GlobalLock16( GetCurrentPDB() )) != NULL)
 107     {
 108         *files = PTR_SEG_TO_LIN( pdb->fileHandlesPtr );
 109         *nbFiles = pdb->nbFiles;
 110     }
 111     else
 112     {
 113         *files = bootFileHandles;
 114         *nbFiles = MAX_BOOT_HANDLES;
 115     }
 116 }
 117
 118
 119 /***********************************************************************
 120  *           FILE_AllocTaskHandle
 121  *
 122  * Allocate a task file handle for a DOS file.
 123  */
 124 static HFILE FILE_AllocTaskHandle( DOS_FILE *dos_file )
 125 {
 126     BYTE *files, *fp;
 127     WORD i, nbFiles;
 128
 129     FILE_GetPDBFiles( &files, &nbFiles );
 130     fp = files + 1;  /* Don't use handle 0, as some programs don't like it */
 131     for (i = nbFiles - 1; (i > 0) && (*fp != 0xff); i--, fp++);
 132     if (!i)
 133     {  /* No more handles or files */
 134         DOS_ERROR( ER_TooManyOpenFiles, EC_ProgramError, SA_Abort, EL_Disk );
 135         return -1;
 136     }
 137     *fp = dos_file ? (BYTE)(dos_file - DOSFiles) : 0;
 138     dprintf_file(stddeb,
 139        "FILE_AllocTaskHandle: returning task handle %d, dos_file %d, file %d of %d \n",
 140              (fp - files), *fp, nbFiles - i, nbFiles  );
 141     return (HFILE)(fp - files);
 142 }
 143
 144
 145 /***********************************************************************
 146  *           FILE_FreeTaskHandle
 147  *
 148  * Free a per-task file handle.
 149  */
 150 static void FILE_FreeTaskHandle( HFILE handle )
 151 {
 152     BYTE *files;
 153     WORD nbFiles;
 154
 155     FILE_GetPDBFiles( &files, &nbFiles );
 156     dprintf_file( stddeb,"FILE_FreeTaskHandle: dos=%d file=%d\n",
 157                   handle, files[handle] );
 158     if ((handle < 0) || (handle >= (INT)nbFiles))
 159     {
 160         fprintf( stderr, "FILE_FreeTaskHandle: invalid file handle %d\n",
 161                  handle );
 162         return;
 163     }
 164     files[handle] = 0xff;
 165 }
 166
 167
 168 /***********************************************************************
 169  *           FILE_SetTaskHandle
 170  *
 171  * Set the value of a task handle (no error checking).
 172  */
 173 static void FILE_SetTaskHandle( HFILE handle, DOS_FILE *file )
 174 {
 175     BYTE *files;
 176     WORD nbFiles;
 177
 178     FILE_GetPDBFiles( &files, &nbFiles );
 179     files[handle] = (BYTE)(file - DOSFiles);
 180 }
 181
 182
 183 /***********************************************************************
 184  *           FILE_GetFile
 185  *
 186  * Return the DOS file associated to a task file handle.
 187  */
 188 static DOS_FILE *FILE_GetFile( HFILE handle )
 189 {
 190     BYTE *files;
 191     WORD nbFiles;
 192     DOS_FILE *file;
 193
 194     FILE_GetPDBFiles( &files, &nbFiles );
 195     if ((handle < 0) || (handle >= (INT)nbFiles) ||
 196         (files[handle] >= MAX_OPEN_FILES) ||
 197         !(file = &DOSFiles[files[handle]])->count)
 198     {
 199         DOS_ERROR( ER_InvalidHandle, EC_ProgramError, SA_Abort, EL_Disk );
 200         return NULL;
 201     }
 202     return file;
 203 }
 204
 205
 206 int FILE_GetUnixHandle( HFILE hFile )
 207 {
 208     DOS_FILE *file;
 209
 210     if (!(file = FILE_GetFile( hFile ))) return -1;
 211     return file->unix_handle;
 212 }
 213
 214
 215 /***********************************************************************
 216  *           FILE_CloseAllFiles
 217  *
 218  * Close all open files of a given PDB. Used on task termination.
 219  */
 220 void FILE_CloseAllFiles( HANDLE hPDB )
 221 {
 222     BYTE *files;
 223     WORD count;
 224     PDB *pdb = (PDB *)GlobalLock16( hPDB );
 225
 226     if (!pdb) return;
 227     files = PTR_SEG_TO_LIN( pdb->fileHandlesPtr );
 228     dprintf_file(stddeb,"FILE_CloseAllFiles: closing %d files\n",pdb->nbFiles);
 229     for (count = pdb->nbFiles; count > 0; count--, files++)
 230     {
 231         if (*files < MAX_OPEN_FILES) FILE_Close( &DOSFiles[*files] );
 232         *files = 0xff;
 233     }
 234 }
 235
 236
 237 /***********************************************************************
 238  *           FILE_SetDosError
 239  *
 240  * Set the DOS error code from errno.
 241  */
 242 void FILE_SetDosError(void)
 243 {
 244     dprintf_file(stddeb, "FILE_SetDosError: errno = %d\n", errno );
 245     switch (errno)
 246     {
 247     case EAGAIN:
 248         DOS_ERROR( ER_ShareViolation, EC_Temporary, SA_Retry, EL_Disk );
 249         break;
 250     case EBADF:
 251         DOS_ERROR( ER_InvalidHandle, EC_ProgramError, SA_Abort, EL_Disk );
 252         break;
 253     case ENOSPC:
 254         DOS_ERROR( ER_DiskFull, EC_MediaError, SA_Abort, EL_Disk );
 255         break;
 256     case EACCES:
 257     case EPERM:
 258     case EROFS:
 259         DOS_ERROR( ER_AccessDenied, EC_AccessDenied, SA_Abort, EL_Disk );
 260         break;
 261     case EBUSY:
 262         DOS_ERROR( ER_LockViolation, EC_AccessDenied, SA_Abort, EL_Disk );
 263         break;
 264     case ENOENT:
 265         DOS_ERROR( ER_FileNotFound, EC_NotFound, SA_Abort, EL_Disk );
 266         break;
 267     case EISDIR:
 268         DOS_ERROR( ER_CanNotMakeDir, EC_AccessDenied, SA_Abort, EL_Unknown );
 269         break;
 270     case ENFILE:
 271     case EMFILE:
 272         DOS_ERROR( ER_NoMoreFiles, EC_MediaError, SA_Abort, EL_Unknown );
 273         break;
 274     case EEXIST:
 275         DOS_ERROR( ER_FileExists, EC_Exists, SA_Abort, EL_Disk );
 276         break;
 277     default:
 278         perror( "int21: unknown errno" );
 279         DOS_ERROR( ER_GeneralFailure, EC_SystemFailure, SA_Abort, EL_Unknown );
 280         break;
 281     }
 282 }
 283
 284
 285 /***********************************************************************
 286  *           FILE_OpenUnixFile
 287  */
 288 static DOS_FILE *FILE_OpenUnixFile( const char *name, int mode )
 289 {
 290     DOS_FILE *file;
 291     struct stat st;
 292
 293     if (!(file = FILE_Alloc())) return NULL;
 294     if ((file->unix_handle = open( name, mode )) == -1)
 295     {
 296         if (Options.allowReadOnly && (mode == O_RDWR))
 297         {
 298             if ((file->unix_handle = open( name, O_RDONLY )) != -1)
 299                 fprintf( stderr, "Warning: could not open %s for writing, opening read-only.\n", name );
 300         }
 301     }
 302     if ((file->unix_handle == -1) || (fstat( file->unix_handle, &st ) == -1))
 303     {
 304         FILE_SetDosError();
 305         FILE_Close( file );
 306         return NULL;
 307     }
 308     if (S_ISDIR(st.st_mode))
 309     {
 310         DOS_ERROR( ER_AccessDenied, EC_AccessDenied, SA_Abort, EL_Disk );
 311         FILE_Close( file );
 312         return NULL;
 313     }
 314
 315     /* File opened OK, now fill the DOS_FILE */
 316
 317     file->unix_name = xstrdup( name );
 318     DOSFS_ToDosDateTime( st.st_mtime, &file->filedate, &file->filetime );
 319     return file;
 320 }
 321
 322
 323 /***********************************************************************
 324  *           FILE_Open
 325  */
 326 static DOS_FILE *FILE_Open( LPCSTR path, int mode )
 327 {
 328     const char *unixName;
 329
 330     dprintf_file(stddeb, "FILE_Open: '%s' %04x\n", path, mode );
 331     if ((unixName = DOSFS_IsDevice( path )) != NULL)
 332     {
 333         dprintf_file( stddeb, "FILE_Open: opening device '%s'\n", unixName );
 334         if (!unixName[0])  /* Non-existing device */
 335         {
 336             dprintf_file(stddeb, "FILE_Open: Non-existing device\n");
 337             DOS_ERROR( ER_FileNotFound, EC_NotFound, SA_Abort, EL_Disk );
 338             return NULL;
 339         }
 340     }
 341     else if (!(unixName = DOSFS_GetUnixFileName( path, TRUE ))) return NULL;
 342     return FILE_OpenUnixFile( unixName, mode );
 343 }
 344
 345
 346 /***********************************************************************
 347  *           FILE_Create
 348  */
 349 static DOS_FILE *FILE_Create( LPCSTR path, int mode, int unique )
 350 {
 351     DOS_FILE *file;
 352     const char *unixName;
 353
 354     dprintf_file(stddeb, "FILE_Create: '%s' %04x %d\n", path, mode, unique );
 355
 356     if ((unixName = DOSFS_IsDevice( path )) != NULL)
 357     {
 358         dprintf_file(stddeb, "FILE_Create: creating device '%s'!\n", unixName);
 359         DOS_ERROR( ER_AccessDenied, EC_NotFound, SA_Abort, EL_Disk );
 360         return NULL;
 361     }
 362
 363     if (!(file = FILE_Alloc())) return NULL;
 364
 365     if (!(unixName = DOSFS_GetUnixFileName( path, FALSE )))
 366     {
 367         FILE_Close( file );
 368         return NULL;
 369     }
 370     if ((file->unix_handle = open( unixName,
 371                            O_CREAT | O_TRUNC | O_RDWR | (unique ? O_EXCL : 0),
 372                            mode )) == -1)
 373     {
 374         FILE_SetDosError();
 375         FILE_Close( file );
 376         return NULL;
 377     }
 378
 379     /* File created OK, now fill the DOS_FILE */
 380
 381     file->unix_name = xstrdup( unixName );
 382     DOSFS_ToDosDateTime( time(NULL), &file->filedate, &file->filetime );
 383     return file;
 384 }
 385
 386
 387 /***********************************************************************
 388  *           FILE_Unlink
 389  */
 390 int FILE_Unlink( LPCSTR path )
 391 {
 392     const char *unixName;
 393
 394     dprintf_file(stddeb, "FILE_Unlink: '%s'\n", path );
 395
 396     if ((unixName = DOSFS_IsDevice( path )) != NULL)
 397     {
 398         dprintf_file(stddeb, "FILE_Unlink: removing device '%s'!\n", unixName);
 399         DOS_ERROR( ER_FileNotFound, EC_NotFound, SA_Abort, EL_Disk );
 400         return 0;
 401     }
 402
 403     if (!(unixName = DOSFS_GetUnixFileName( path, TRUE ))) return 0;
 404     if (unlink( unixName ) == -1)
 405     {
 406         FILE_SetDosError();
 407         return 0;
 408     }
 409     return 1;
 410 }
 411
 412
 413 /***********************************************************************
 414  *           FILE_Stat
 415  *
 416  * Stat a Unix path name. Return 1 if OK.
 417  */
 418 int FILE_Stat( LPCSTR unixName, BYTE *pattr, DWORD *psize,
 419                WORD *pdate, WORD *ptime )
 420 {
 421     struct stat st;
 422
 423     if (stat( unixName, &st ) == -1)
 424     {
 425         FILE_SetDosError();
 426         return 0;
 427     }
 428     if (pattr) *pattr = FA_ARCHIVE | (S_ISDIR(st.st_mode) ? FA_DIRECTORY : 0);
 429     if (psize) *psize = S_ISDIR(st.st_mode) ? 0 : st.st_size;
 430     DOSFS_ToDosDateTime( st.st_mtime, pdate, ptime );
 431     return 1;
 432 }
 433
 434
 435 /***********************************************************************
 436  *           FILE_GetDateTime
 437  *
 438  * Get the date and time of a file.
 439  */
 440 int FILE_GetDateTime( HFILE hFile, WORD *pdate, WORD *ptime, BOOL refresh )
 441 {
 442     DOS_FILE *file;
 443
 444     if (!(file = FILE_GetFile( hFile ))) return 0;
 445     if (refresh)
 446     {
 447         struct stat st;
 448         if (fstat( file->unix_handle, &st ) == -1)
 449         {
 450             FILE_SetDosError();
 451             return 0;
 452         }
 453         DOSFS_ToDosDateTime( st.st_mtime, &file->filedate, &file->filetime );
 454     }
 455     *pdate = file->filedate;
 456     *ptime = file->filetime;
 457     return 1;
 458 }
 459
 460
 461 /***********************************************************************
 462  *           FILE_SetDateTime
 463  *
 464  * Set the date and time of a file.
 465  */
 466 int FILE_SetDateTime( HFILE hFile, WORD date, WORD time )
 467 {
 468     DOS_FILE *file;
 469     struct tm newtm;
 470     struct utimbuf filetime;
 471
 472     if (!(file = FILE_GetFile( hFile ))) return 0;
 473     newtm.tm_sec  = (time & 0x1f) * 2;
 474     newtm.tm_min  = (time >> 5) & 0x3f;
 475     newtm.tm_hour = (time >> 11);
 476     newtm.tm_mday = (date & 0x1f);
 477     newtm.tm_mon  = ((date >> 5) & 0x0f) - 1;
 478     newtm.tm_year = (date >> 9) + 80;
 479
 480     filetime.actime = filetime.modtime = mktime( &newtm );
 481     if (utime( file->unix_name, &filetime ) != -1) return 1;
 482     FILE_SetDosError();
 483     return 0;
 484 }
 485
 486
 487 /***********************************************************************
 488  *           FILE_RemoveDir
 489  */
 490 int FILE_RemoveDir( LPCSTR path )
 491 {
 492     const char *unixName;
 493
 494     dprintf_file(stddeb, "FILE_RemoveDir: '%s'\n", path );
 495
 496     if ((unixName = DOSFS_IsDevice( path )) != NULL)
 497     {
 498         dprintf_file(stddeb, "FILE_RemoveDir: device '%s'!\n", unixName);
 499         DOS_ERROR( ER_FileNotFound, EC_NotFound, SA_Abort, EL_Disk );
 500         return 0;
 501     }
 502     if (!(unixName = DOSFS_GetUnixFileName( path, TRUE ))) return 0;
 503     if (rmdir( unixName ) == -1)
 504     {
 505         FILE_SetDosError();
 506         return 0;
 507     }
 508     return 1;
 509 }
 510
 511
 512 /***********************************************************************
 513  *           FILE_Dup
 514  *
 515  * dup() function for DOS handles.
 516  */
 517 HFILE FILE_Dup( HFILE hFile )
 518 {
 519     DOS_FILE *file;
 520     HFILE handle;
 521
 522     dprintf_file( stddeb, "FILE_Dup for handle %d\n", hFile );
 523     if (!(file = FILE_GetFile( hFile ))) return HFILE_ERROR;
 524     if ((handle = FILE_AllocTaskHandle( file )) != HFILE_ERROR) file->count++;
 525     dprintf_file( stddeb, "FILE_Dup return handle %d\n", handle );
 526     return handle;
 527 }
 528
 529
 530 /***********************************************************************
 531  *           FILE_Dup2
 532  *
 533  * dup2() function for DOS handles.
 534  */
 535 HFILE FILE_Dup2( HFILE hFile1, HFILE hFile2 )
 536 {
 537     DOS_FILE *file;
 538     PDB *pdb = (PDB *)GlobalLock16( GetCurrentPDB() );
 539     BYTE *files = PTR_SEG_TO_LIN( pdb->fileHandlesPtr );
 540
 541     dprintf_file( stddeb, "FILE_Dup2 for handle %d\n", hFile1 );
 542     if (!(file = FILE_GetFile( hFile1 ))) return HFILE_ERROR;
 543
 544     if ((hFile2 < 0) || (hFile2 >= (INT)pdb->nbFiles))
 545     {
 546         DOS_ERROR( ER_InvalidHandle, EC_ProgramError, SA_Abort, EL_Disk );
 547         return HFILE_ERROR;
 548     }
 549     if (files[hFile2] < MAX_OPEN_FILES)
 550     {
 551         dprintf_file( stddeb, "FILE_Dup2 closing old handle2 %d\n",
 552                       files[hFile2] );
 553         FILE_Close( &DOSFiles[files[hFile2]] );
 554     }
 555     files[hFile2] = (BYTE)(file - DOSFiles);
 556     file->count++;
 557     dprintf_file( stddeb, "FILE_Dup2 return handle2 %d\n", hFile2 );
 558     return hFile2;
 559 }
 560
 561
 562 /***********************************************************************
 563  *           FILE_Read
 564  */
 565 INT32 FILE_Read( HFILE hFile, LPVOID buffer, UINT32 count )
 566 {
 567     DOS_FILE *file;
 568     INT32 result;
 569
 570     dprintf_file( stddeb, "FILE_Read: %d %p %d\n", hFile, buffer, count );
 571     if (!(file = FILE_GetFile( hFile ))) return -1;
 572     if (!count) return 0;
 573     if ((result = read( file->unix_handle, buffer, count )) == -1)
 574         FILE_SetDosError();
 575     return result;
 576 }
 577
 578
 579 /***********************************************************************
 580  *           GetTempFileName   (KERNEL.97)
 581  */
 582 INT GetTempFileName( BYTE drive, LPCSTR prefix, UINT unique, LPSTR buffer )
 583 {
 584     int i;
 585     UINT num = unique ? (unique & 0xffff) : time(NULL) & 0xffff;
 586     char *p;
 587
 588     if ((drive & TF_FORCEDRIVE) &&
 589         !DRIVE_IsValid( toupper(drive & ~TF_FORCEDRIVE) - 'A' ))
 590     {
 591         drive &= ~TF_FORCEDRIVE;
 592         fprintf( stderr, "Warning: GetTempFileName: invalid drive %d specified\n",
 593                  drive );
 594     }
 595
 596     if (drive & TF_FORCEDRIVE)
 597     {
 598         sprintf( buffer, "%c:", drive & ~TF_FORCEDRIVE );
 599     }
 600     else
 601     {
 602         DIR_GetTempDosDir( buffer, 132 );  /* buffer must be at least 144 */
 603         strcat( buffer, "\\" );
 604     }
 605
 606     p = buffer + strlen(buffer);
 607     for (i = 3; (i > 0) && (*prefix); i--) *p++ = *prefix++;
 608     sprintf( p, "%04x.tmp", num );
 609
 610     if (unique)
 611     {
 612         lstrcpyn32A( buffer, DOSFS_GetDosTrueName( buffer, FALSE ), 144 );
 613         dprintf_file( stddeb, "GetTempFileName: returning %s\n", buffer );
 614         return unique;
 615     }
 616
 617     /* Now try to create it */
 618
 619     do
 620     {
 621         DOS_FILE *file;
 622         if ((file = FILE_Create( buffer, 0666, TRUE )) != NULL)
 623         {  /* We created it */
 624             dprintf_file( stddeb, "GetTempFileName: created %s\n", buffer );
 625             FILE_Close( file );
 626             break;
 627         }
 628         if (DOS_ExtendedError != ER_FileExists) break;  /* No need to go on */
 629         num++;
 630         sprintf( p, "%04x.tmp", num );
 631     } while (num != (unique & 0xffff));
 632
 633     lstrcpyn32A( buffer, DOSFS_GetDosTrueName( buffer, FALSE ), 144 );
 634     dprintf_file( stddeb, "GetTempFileName: returning %s\n", buffer );
 635     return num;
 636 }
 637
 638
 639 /***********************************************************************
 640  *           OpenFile   (KERNEL.74)
 641  */
 642 HFILE OpenFile( LPCSTR name, OFSTRUCT *ofs, UINT mode )
 643 {
 644     DOS_FILE *file;
 645     HFILE hFileRet;
 646     WORD filedatetime[2];
 647     const char *unixName, *dosName;
 648     char *p;
 649     int len, i, unixMode;
 650
 651     ofs->cBytes = sizeof(OFSTRUCT);
 652     ofs->nErrCode = 0;
 653     if (mode & OF_REOPEN) name = ofs->szPathName;
 654     dprintf_file( stddeb, "OpenFile: %s %04x\n", name, mode );
 655
 656     /* First allocate a task handle */
 657
 658     if ((hFileRet = FILE_AllocTaskHandle( NULL )) == HFILE_ERROR)
 659     {
 660         ofs->nErrCode = DOS_ExtendedError;
 661         dprintf_file( stddeb, "OpenFile: no more task handles.\n" );
 662         return HFILE_ERROR;
 663     }
 664
 665     /* OF_PARSE simply fills the structure */
 666
 667     if (mode & OF_PARSE)
 668     {
 669         if (!(dosName = DOSFS_GetDosTrueName( name, FALSE ))) goto error;
 670         lstrcpyn32A( ofs->szPathName, dosName, sizeof(ofs->szPathName) );
 671         ofs->fFixedDisk = (GetDriveType( dosName[0]-'A' ) != DRIVE_REMOVABLE);
 672         dprintf_file( stddeb, "OpenFile(%s): OF_PARSE, res = '%s', %d\n",
 673                       name, ofs->szPathName, hFileRet );
 674         /* Return the handle, but close it first */
 675         FILE_FreeTaskHandle( hFileRet );
 676 /*        return hFileRet; */
 677         return 0;  /* Progman seems to like this better */
 678     }
 679
 680     /* OF_CREATE is completely different from all other options, so
 681        handle it first */
 682
 683     if (mode & OF_CREATE)
 684     {
 685         if (!(file = FILE_Create( name, 0666, FALSE ))) goto error;
 686         lstrcpyn32A( ofs->szPathName, DOSFS_GetDosTrueName( name, FALSE ),
 687                      sizeof(ofs->szPathName) );
 688         goto success;
 689     }
 690
 691     /* Now look for the file */
 692
 693     /* First try the current directory */
 694
 695     lstrcpyn32A( ofs->szPathName, name, sizeof(ofs->szPathName) );
 696     if ((unixName = DOSFS_GetUnixFileName( ofs->szPathName, TRUE )) != NULL)
 697         goto found;
 698
 699     /* Now try some different paths if none was specified */
 700
 701     if ((mode & OF_SEARCH) && !(mode & OF_REOPEN))
 702     {
 703         if (name[1] == ':') name += 2;
 704         if ((p = strrchr( name, '\\' ))) name = p + 1;
 705         if ((p = strrchr( name, '/' ))) name = p + 1;
 706         if (!name[0]) goto not_found;
 707     }
 708     else
 709     {
 710         if ((name[1] == ':') || strchr( name, '/' ) || strchr( name, '\\' ))
 711             goto not_found;
 712     }
 713
 714     if ((len = sizeof(ofs->szPathName) - strlen(name) - 1) < 0) goto not_found;
 715
 716     /* Try the Windows directory */
 717
 718     GetWindowsDirectory( ofs->szPathName, len );
 719     strcat( ofs->szPathName, "\\" );
 720     strcat( ofs->szPathName, name );
 721     if ((unixName = DOSFS_GetUnixFileName( ofs->szPathName, TRUE )) != NULL)
 722         goto found;
 723
 724     /* Try the Windows system directory */
 725
 726     GetSystemDirectory( ofs->szPathName, len );
 727     strcat( ofs->szPathName, "\\" );
 728     strcat( ofs->szPathName, name );
 729     if ((unixName = DOSFS_GetUnixFileName( ofs->szPathName, TRUE )) != NULL)
 730         goto found;
 731
 732     /* Try the path of the current executable */
 733
 734     if (GetCurrentTask())
 735     {
 736         GetModuleFileName( GetCurrentTask(), ofs->szPathName, len );
 737         if ((p = strrchr( ofs->szPathName, '\\' )))
 738         {
 739             strcpy( p + 1, name );
 740             if ((unixName = DOSFS_GetUnixFileName( ofs->szPathName, TRUE )))
 741                 goto found;
 742         }
 743     }
 744
 745     /* Try all directories in path */
 746
 747     for (i = 0; ; i++)
 748     {
 749         if (!DIR_GetDosPath( i, ofs->szPathName, len )) goto not_found;
 750         strcat( ofs->szPathName, "\\" );
 751         strcat( ofs->szPathName, name );
 752         if ((unixName = DOSFS_GetUnixFileName( ofs->szPathName, TRUE)) != NULL)
 753             break;
 754     }
 755
 756 found:
 757     dprintf_file( stddeb, "OpenFile: found '%s'\n", unixName );
 758     lstrcpyn32A(ofs->szPathName, DOSFS_GetDosTrueName( ofs->szPathName, FALSE),
 759                 sizeof(ofs->szPathName) );
 760
 761     if (mode & OF_DELETE)
 762     {
 763         if (unlink( unixName ) == -1) goto not_found;
 764         dprintf_file( stddeb, "OpenFile(%s): OF_DELETE return = OK\n", name);
 765         /* Return the handle, but close it first */
 766         FILE_FreeTaskHandle( hFileRet );
 767         return hFileRet;
 768     }
 769
 770     switch(mode & 3)
 771     {
 772     case OF_WRITE:
 773         unixMode = O_WRONLY; break;
 774     case OF_READWRITE:
 775         unixMode = O_RDWR; break;
 776     case OF_READ:
 777     default:
 778         unixMode = O_RDONLY; break;
 779     }
 780
 781     if (!(file = FILE_OpenUnixFile( unixName, unixMode ))) goto not_found;
 782     filedatetime[0] = file->filedate;
 783     filedatetime[1] = file->filetime;
 784     if ((mode & OF_VERIFY) && (mode & OF_REOPEN))
 785     {
 786         if (memcmp( ofs->reserved, filedatetime, sizeof(ofs->reserved) ))
 787         {
 788             FILE_Close( file );
 789             dprintf_file( stddeb, "OpenFile(%s): OF_VERIFY failed\n", name );
 790             /* FIXME: what error here? */
 791             DOS_ERROR( ER_FileNotFound, EC_NotFound, SA_Abort, EL_Disk );
 792             goto error;
 793         }
 794     }
 795     memcpy( ofs->reserved, filedatetime, sizeof(ofs->reserved) );
 796
 797     if (mode & OF_EXIST)
 798     {
 799         FILE_Close( file );
 800         /* Return the handle, but close it first */
 801         FILE_FreeTaskHandle( hFileRet );
 802         return hFileRet;
 803     }
 804
 805 success:  /* We get here if the open was successful */
 806     dprintf_file( stddeb, "OpenFile(%s): OK, return = %d\n", name, hFileRet );
 807     FILE_SetTaskHandle( hFileRet, file );
 808     return hFileRet;
 809
 810 not_found:  /* We get here if the file does not exist */
 811     dprintf_file( stddeb, "OpenFile: '%s' not found\n", name );
 812     DOS_ERROR( ER_FileNotFound, EC_NotFound, SA_Abort, EL_Disk );
 813     /* fall through */
 814
 815 error:  /* We get here if there was an error opening the file */
 816     ofs->nErrCode = DOS_ExtendedError;
 817     dprintf_file( stddeb, "OpenFile(%s): return = HFILE_ERROR\n", name );
 818     FILE_FreeTaskHandle( hFileRet );
 819     return HFILE_ERROR;
 820 }
 821
 822
 823 /***********************************************************************
 824  *           _lclose   (KERNEL.81)
 825  */
 826 HFILE _lclose( HFILE hFile )
 827 {
 828     DOS_FILE *file;
 829
 830     dprintf_file( stddeb, "_lclose: handle %d\n", hFile );
 831     if (!(file = FILE_GetFile( hFile ))) return HFILE_ERROR;
 832     FILE_Close( file );
 833     FILE_FreeTaskHandle( hFile );
 834     return 0;
 835 }
 836
 837
 838 /***********************************************************************
 839  *           _lread   (KERNEL.82)
 840  */
 841 INT _lread( HFILE hFile, SEGPTR buffer, WORD count )
 842 {
 843     return (INT)_hread( hFile, buffer, (LONG)count );
 844 }
 845
 846
 847 /***********************************************************************
 848  *           _lcreat   (KERNEL.83)
 849  */
 850 HFILE _lcreat( LPCSTR path, INT attr )
 851 {
 852     DOS_FILE *file;
 853     HFILE handle;
 854     int mode;
 855
 856     dprintf_file( stddeb, "_lcreat: %s %02x\n", path, attr );
 857     mode = (attr & 1) ? 0444 : 0666;
 858     if (!(file = FILE_Create( path, mode, FALSE ))) return HFILE_ERROR;
 859     if ((handle = FILE_AllocTaskHandle( file )) == HFILE_ERROR)
 860         FILE_Close( file );
 861     return handle;
 862 }
 863
 864
 865 /***********************************************************************
 866  *           _lcreat_uniq   (Not a Windows API)
 867  */
 868 HFILE _lcreat_uniq( LPCSTR path, INT attr )
 869 {
 870     DOS_FILE *file;
 871     HFILE handle;
 872     int mode;
 873
 874     dprintf_file( stddeb, "_lcreat: %s %02x\n", path, attr );
 875     mode = (attr & 1) ? 0444 : 0666;
 876     if (!(file = FILE_Create( path, mode, TRUE ))) return HFILE_ERROR;
 877     if ((handle = FILE_AllocTaskHandle( file )) == HFILE_ERROR)
 878         FILE_Close( file );
 879     return handle;
 880 }
 881
 882
 883 /***********************************************************************
 884  *           _llseek   (KERNEL.84)
 885  */
 886 LONG _llseek( HFILE hFile, LONG lOffset, INT nOrigin )
 887 {
 888     DOS_FILE *file;
 889     int origin, result;
 890
 891     dprintf_file( stddeb, "_llseek: handle %d, offset %ld, origin %d\n",
 892                   hFile, lOffset, nOrigin);
 893
 894     if (!(file = FILE_GetFile( hFile ))) return HFILE_ERROR;
 895     switch(nOrigin)
 896     {
 897         case 1:  origin = SEEK_CUR; break;
 898         case 2:  origin = SEEK_END; break;
 899         default: origin = SEEK_SET; break;
 900     }
 901
 902     if ((result = lseek( file->unix_handle, lOffset, origin )) == -1)
 903         FILE_SetDosError();
 904     return result;
 905 }
 906
 907
 908 /***********************************************************************
 909  *           _lopen   (KERNEL.85)
 910  */
 911 HFILE _lopen( LPCSTR path, INT mode )
 912 {
 913     DOS_FILE *file;
 914     int unixMode;
 915     HFILE handle;
 916
 917     dprintf_file(stddeb, "_lopen('%s',%04x)\n", path, mode );
 918
 919     switch(mode & 3)
 920     {
 921     case OF_WRITE:
 922         unixMode = O_WRONLY | O_TRUNC;
 923         break;
 924     case OF_READWRITE:
 925         unixMode = O_RDWR;
 926         break;
 927     case OF_READ:
 928     default:
 929         unixMode = O_RDONLY;
 930         break;
 931     }
 932     if (!(file = FILE_Open( path, unixMode ))) return HFILE_ERROR;
 933     if ((handle = FILE_AllocTaskHandle( file )) == HFILE_ERROR)
 934         FILE_Close( file );
 935     return handle;
 936 }
 937
 938
 939 /***********************************************************************
 940  *           _lwrite   (KERNEL.86)
 941  */
 942 INT _lwrite( HFILE hFile, LPCSTR buffer, WORD count )
 943 {
 944     return (INT)_hwrite( hFile, buffer, (LONG)count );
 945 }
 946
 947
 948 /***********************************************************************
 949  *           _hread   (KERNEL.349)
 950  */
 951 LONG _hread( HFILE hFile, SEGPTR buffer, LONG count )
 952 {
 953 #ifndef WINELIB
 954     LONG maxlen;
 955
 956     dprintf_file( stddeb, "_hread: %d %08lx %ld\n",
 957                   hFile, (DWORD)buffer, count );
 958
 959     /* Some programs pass a count larger than the allocated buffer */
 960     maxlen = GetSelectorLimit( SELECTOROF(buffer) ) - OFFSETOF(buffer) + 1;
 961     if (count > maxlen) count = maxlen;
 962 #endif
 963     return FILE_Read( hFile, PTR_SEG_TO_LIN(buffer), count );
 964 }
 965
 966
 967 /***********************************************************************
 968  *           _hwrite   (KERNEL.350)
 969  */
 970 LONG _hwrite( HFILE hFile, LPCSTR buffer, LONG count )
 971 {
 972     DOS_FILE *file;
 973     LONG result;
 974
 975     dprintf_file( stddeb, "_hwrite: %d %p %ld\n", hFile, buffer, count );
 976
 977     if (!(file = FILE_GetFile( hFile ))) return HFILE_ERROR;
 978
 979     if (count == 0)  /* Expand or truncate at current position */
 980         result = ftruncate( file->unix_handle,
 981                             lseek( file->unix_handle, 0, SEEK_CUR ) );
 982     else
 983         result = write( file->unix_handle, buffer, count );
 984
 985     if (result == -1) FILE_SetDosError();
 986     return result;
 987 }
 988
 989
 990 /***********************************************************************
 991  *           SetHandleCount   (KERNEL.199)
 992  */
 993 WORD SetHandleCount( WORD count )
 994 {
 995     HANDLE hPDB = GetCurrentPDB();
 996     PDB *pdb = (PDB *)GlobalLock16( hPDB );
 997     BYTE *files = PTR_SEG_TO_LIN( pdb->fileHandlesPtr );
 998     WORD i;
 999
1000     dprintf_file( stddeb, "SetHandleCount(%d)\n", count );
1001
1002     if (count < 20) count = 20;  /* No point in going below 20 */
1003     else if (count > 254) count = 254;
1004
1005     /* If shrinking the table, make sure all extra file handles are closed */
1006     if (count < pdb->nbFiles)
1007     {
1008         for (i = count; i < pdb->nbFiles; i++)
1009             if (files[i] != 0xff)  /* File open */
1010             {
1011                 DOS_ERROR( ER_TooManyOpenFiles, EC_ProgramError,
1012                            SA_Abort, EL_Disk );
1013                 return pdb->nbFiles;
1014             }
1015     }
1016
1017     if (count == 20)
1018     {
1019         if (pdb->nbFiles > 20)
1020         {
1021             memcpy( pdb->fileHandles, files, 20 );
1022 #ifdef WINELIB
1023             GlobalFree32( (HGLOBAL32)pdb->fileHandlesPtr );
1024             pdb->fileHandlesPtr = (SEGPTR)pdb->fileHandles;
1025 #else
1026             GlobalFree16( GlobalHandle16( SELECTOROF(pdb->fileHandlesPtr) ));
1027             pdb->fileHandlesPtr = (SEGPTR)MAKELONG( 0x18,
1028                                                    GlobalHandleToSel( hPDB ) );
1029 #endif
1030             pdb->nbFiles = 20;
1031         }
1032     }
1033     else  /* More than 20, need a new file handles table */
1034     {
1035         BYTE *newfiles;
1036 #ifdef WINELIB
1037         newfiles = (BYTE *)GlobalAlloc32( GMEM_FIXED, count );
1038 #else
1039         HANDLE newhandle = GlobalAlloc16( GMEM_MOVEABLE, count );
1040         if (!newhandle)
1041         {
1042             DOS_ERROR( ER_OutOfMemory, EC_OutOfResource, SA_Abort, EL_Memory );
1043             return pdb->nbFiles;
1044         }
1045         newfiles = (BYTE *)GlobalLock16( newhandle );
1046 #endif  /* WINELIB */
1047         if (count > pdb->nbFiles)
1048         {
1049             memcpy( newfiles, files, pdb->nbFiles );
1050             memset( newfiles + pdb->nbFiles, 0xff, count - pdb->nbFiles );
1051         }
1052         else memcpy( newfiles, files, count );
1053 #ifdef WINELIB
1054         if (pdb->nbFiles > 20) GlobalFree32( (HGLOBAL32)pdb->fileHandlesPtr );
1055         pdb->fileHandlesPtr = (SEGPTR)newfiles;
1056 #else
1057         if (pdb->nbFiles > 20)
1058             GlobalFree16( GlobalHandle16( SELECTOROF(pdb->fileHandlesPtr) ));
1059         pdb->fileHandlesPtr = WIN16_GlobalLock16( newhandle );
1060 #endif  /* WINELIB */
1061         pdb->nbFiles = count;
1062     }
1063     return pdb->nbFiles;
1064 }
1065
1066
1067 /***********************************************************************
1068  *           FlushFileBuffers   (KERNEL32.133)
1069  */
1070 BOOL32 FlushFileBuffers( HFILE hFile )
1071 {
1072     DOS_FILE *file;
1073
1074     dprintf_file( stddeb, "FlushFileBuffers(%d)\n", hFile );
1075     if (!(file = FILE_GetFile( hFile ))) return FALSE;
1076     if (fsync( file->unix_handle ) != -1) return TRUE;
1077     FILE_SetDosError();
1078     return FALSE;
1079 }
1080
1081
1082 /***********************************************************************
1083  *           CreateDirectory16   (KERNEL.144)
1084  */
1085 BOOL16 CreateDirectory16( LPCSTR path, LPVOID dummy )
1086 {
1087     dprintf_file( stddeb,"CreateDirectory16(%s,%p)\n", path, dummy );
1088     return (BOOL16)CreateDirectory32A( path, NULL );
1089 }
1090
1091
1092 /***********************************************************************
1093  *           CreateDirectory32A   (KERNEL32.39)
1094  */
1095 BOOL32 CreateDirectory32A( LPCSTR path, LPSECURITY_ATTRIBUTES lpsecattribs )
1096 {
1097     const char *unixName;
1098
1099     dprintf_file( stddeb, "CreateDirectory32A(%s,%p)\n", path, lpsecattribs );
1100     if ((unixName = DOSFS_IsDevice( path )) != NULL)
1101     {
1102         dprintf_file(stddeb, "CreateDirectory: device '%s'!\n", unixName);
1103         DOS_ERROR( ER_AccessDenied, EC_AccessDenied, SA_Abort, EL_Disk );
1104         return FALSE;
1105     }
1106     if (!(unixName = DOSFS_GetUnixFileName( path, FALSE ))) return 0;
1107     if ((mkdir( unixName, 0777 ) == -1) && (errno != EEXIST))
1108     {
1109         FILE_SetDosError();
1110         return FALSE;
1111     }
1112     return TRUE;
1113 }
1114
1115
1116 /***********************************************************************
1117  *           CreateDirectory32W   (KERNEL32.42)
1118  */
1119 BOOL32 CreateDirectory32W( LPCWSTR path, LPSECURITY_ATTRIBUTES lpsecattribs )
1120 {
1121     LPSTR xpath = STRING32_DupUniToAnsi(path);
1122     BOOL32 ret = CreateDirectory32A(xpath,lpsecattribs);
1123     free(xpath);
1124     return ret;
1125 }