msdos/int21.c

   1 /*
   2  * DOS interrupt 21h handler
   3  */
   4
   5 #include <time.h>
   6 #include <fcntl.h>
   7 #include <errno.h>
   8 #include <stdio.h>
   9 #include <stdlib.h>
  10 #include <sys/file.h>
  11 #include <string.h>
  12 #include <sys/stat.h>
  13 #include <sys/time.h>
  14 #include <sys/types.h>
  15 #include <unistd.h>
  16 #include <utime.h>
  17 #include <ctype.h>
  18 #include "windows.h"
  19 #include "drive.h"
  20 #include "file.h"
  21 #include "heap.h"
  22 #include "msdos.h"
  23 #include "ldt.h"
  24 #include "task.h"
  25 #include "options.h"
  26 #include "miscemu.h"
  27 #include "xmalloc.h"
  28 #include "stddebug.h"
  29 #include "debug.h"
  30 #if defined(__svr4__) || defined(_SCO_DS)
  31 /* SVR4 DOESNT do locking the same way must implement properly */
  32 #define LOCK_EX 0
  33 #define LOCK_SH  1
  34 #define LOCK_NB  8
  35 #endif
  36
  37
  38 #define DOS_GET_DRIVE(reg) ((reg) ? (reg) - 1 : DRIVE_GetCurrentDrive())
  39
  40 /* Define the drive parameter block, as used by int21/1F
  41  * and int21/32.  This table can be accessed through the
  42  * global 'dpb' pointer, which points into the local dos
  43  * heap.
  44  */
  45 struct DPB
  46 {
  47     BYTE drive_num;         /* 0=A, etc. */
  48     BYTE unit_num;          /* Drive's unit number (?) */
  49     WORD sector_size;       /* Sector size in bytes */
  50     BYTE high_sector;       /* Highest sector in a cluster */
  51     BYTE shift;             /* Shift count (?) */
  52     WORD reserved;          /* Number of reserved sectors at start */
  53     BYTE num_FAT;           /* Number of FATs */
  54     WORD dir_entries;       /* Number of root dir entries */
  55     WORD first_data;        /* First data sector */
  56     WORD high_cluster;      /* Highest cluster number */
  57     WORD sectors_in_FAT;    /* Number of sectors per FAT */
  58     WORD start_dir;         /* Starting sector of first dir */
  59     DWORD driver_head;      /* Address of device driver header (?) */
  60     BYTE media_ID;          /* Media ID */
  61     BYTE access_flag;       /* Prev. accessed flag (0=yes,0xFF=no) */
  62     DWORD next;             /* Pointer to next DPB in list */
  63     WORD free_search;       /* Free cluster search start */
  64     WORD free_clusters;     /* Number of free clusters (0xFFFF=unknown) */
  65 };
  66
  67 WORD CodePage = 437;
  68 DWORD dpbsegptr;
  69
  70 struct DosHeap {
  71         BYTE InDosFlag;
  72         BYTE mediaID;
  73         BYTE biosdate[8];
  74         struct DPB dpb;
  75 };
  76 static struct DosHeap *heap;
  77 static WORD DosHeapHandle;
  78
  79 WORD sharing_retries = 3;      /* number of retries at sharing violation */
  80 WORD sharing_pause = 1;        /* pause between retries */
  81
  82 extern char TempDirectory[];
  83
  84 static BOOL32 INT21_CreateHeap(void)
  85 {
  86     if (!(DosHeapHandle = GlobalAlloc16(GMEM_FIXED,sizeof(struct DosHeap))))
  87     {
  88         fprintf( stderr, "INT21_Init: Out of memory\n");
  89         return FALSE;
  90     }
  91     heap = (struct DosHeap *) GlobalLock16(DosHeapHandle);
  92     dpbsegptr = PTR_SEG_OFF_TO_SEGPTR(DosHeapHandle,(int)&heap->dpb-(int)heap);
  93     heap->InDosFlag = 0;
  94     strcpy(heap->biosdate, "01/01/80");
  95     return TRUE;
  96 }
  97
  98 static BYTE *GetCurrentDTA(void)
  99 {
 100     TDB *pTask = (TDB *)GlobalLock16( GetCurrentTask() );
 101     return (BYTE *)PTR_SEG_TO_LIN( pTask->dta );
 102 }
 103
 104
 105 void CreateBPB(int drive, BYTE *data)
 106 {
 107         if (drive > 1) {
 108                 setword(data, 512);
 109                 data[2] = 2;
 110                 setword(&data[3], 0);
 111                 data[5] = 2;
 112                 setword(&data[6], 240);
 113                 setword(&data[8], 64000);
 114                 data[0x0a] = 0xf8;
 115                 setword(&data[0x0b], 40);
 116                 setword(&data[0x0d], 56);
 117                 setword(&data[0x0f], 2);
 118                 setword(&data[0x11], 0);
 119                 setword(&data[0x1f], 800);
 120                 data[0x21] = 5;
 121                 setword(&data[0x22], 1);
 122         } else { /* 1.44mb */
 123                 setword(data, 512);
 124                 data[2] = 2;
 125                 setword(&data[3], 0);
 126                 data[5] = 2;
 127                 setword(&data[6], 240);
 128                 setword(&data[8], 2880);
 129                 data[0x0a] = 0xf8;
 130                 setword(&data[0x0b], 6);
 131                 setword(&data[0x0d], 18);
 132                 setword(&data[0x0f], 2);
 133                 setword(&data[0x11], 0);
 134                 setword(&data[0x1f], 80);
 135                 data[0x21] = 7;
 136                 setword(&data[0x22], 2);
 137         }
 138 }
 139
 140 static int INT21_GetFreeDiskSpace( CONTEXT *context )
 141 {
 142     DWORD cluster_sectors, sector_bytes, free_clusters, total_clusters;
 143     char root[] = "A:\\";
 144
 145     *root += DOS_GET_DRIVE( DL_reg(context) );
 146     if (!GetDiskFreeSpace32A( root, &cluster_sectors, &sector_bytes,
 147                               &free_clusters, &total_clusters )) return 0;
 148     AX_reg(context) = cluster_sectors;
 149     BX_reg(context) = free_clusters;
 150     CX_reg(context) = sector_bytes;
 151     DX_reg(context) = total_clusters;
 152     return 1;
 153 }
 154
 155 static int INT21_GetDriveAllocInfo( CONTEXT *context )
 156 {
 157     if (!INT21_GetFreeDiskSpace( context )) return 0;
 158     if (!heap && !INT21_CreateHeap()) return 0;
 159     heap->mediaID = 0xf0;
 160     DS_reg(context) = DosHeapHandle;
 161     BX_reg(context) = (int)&heap->mediaID - (int)heap;
 162     return 1;
 163 }
 164
 165 static void GetDrivePB( CONTEXT *context, int drive )
 166 {
 167         if(!DRIVE_IsValid(drive))
 168         {
 169             DOS_ERROR( ER_InvalidDrive, EC_MediaError, SA_Abort, EL_Disk );
 170             AX_reg(context) = 0x00ff;
 171         }
 172         else if (heap || INT21_CreateHeap())
 173         {
 174                 dprintf_int(stddeb, "int21: GetDrivePB not fully implemented.\n");
 175
 176                 /* FIXME: I have no idea what a lot of this information should
 177                  * say or whether it even really matters since we're not allowing
 178                  * direct block access.  However, some programs seem to depend on
 179                  * getting at least _something_ back from here.  The 'next' pointer
 180                  * does worry me, though.  Should we have a complete table of
 181                  * separate DPBs per drive?  Probably, but I'm lazy. :-)  -CH
 182                  */
 183                 heap->dpb.drive_num = heap->dpb.unit_num = drive; /*The same?*/
 184                 heap->dpb.sector_size = 512;
 185                 heap->dpb.high_sector = 1;
 186                 heap->dpb.shift = drive < 2 ? 0 : 6; /*6 for HD, 0 for floppy*/
 187                 heap->dpb.reserved = 0;
 188                 heap->dpb.num_FAT = 1;
 189                 heap->dpb.dir_entries = 2;
 190                 heap->dpb.first_data = 2;
 191                 heap->dpb.high_cluster = 64000;
 192                 heap->dpb.sectors_in_FAT = 1;
 193                 heap->dpb.start_dir = 1;
 194                 heap->dpb.driver_head = 0;
 195                 heap->dpb.media_ID = (drive > 1) ? 0xF8 : 0xF0;
 196                 heap->dpb.access_flag = 0;
 197                 heap->dpb.next = 0;
 198                 heap->dpb.free_search = 0;
 199                 heap->dpb.free_clusters = 0xFFFF;    /* unknown */
 200
 201                 AL_reg(context) = 0x00;
 202                 DS_reg(context) = SELECTOROF(dpbsegptr);
 203                 BX_reg(context) = OFFSETOF(dpbsegptr);
 204         }
 205 }
 206
 207
 208 static void ioctlGetDeviceInfo( CONTEXT *context )
 209 {
 210     int curr_drive;
 211     dprintf_int (stddeb, "int21: ioctl (%d, GetDeviceInfo)\n", BX_reg(context));
 212
 213     curr_drive = DRIVE_GetCurrentDrive();
 214     DX_reg(context) = 0x0140 + curr_drive + ((curr_drive > 1) ? 0x0800 : 0); /* no floppy */
 215     /* bits 0-5 are current drive
 216      * bit 6 - file has NOT been written..FIXME: correct?
 217      * bit 8 - generate int24 if no diskspace on write/ read past end of file
 218      * bit 11 - media not removable
 219      */
 220     RESET_CFLAG(context);
 221 }
 222
 223 static BOOL32 ioctlGenericBlkDevReq( CONTEXT *context )
 224 {
 225         BYTE *dataptr = PTR_SEG_OFF_TO_LIN(DS_reg(context), DX_reg(context));
 226         int drive = DOS_GET_DRIVE( BL_reg(context) );
 227
 228         if (!DRIVE_IsValid(drive))
 229         {
 230             DOS_ERROR( ER_FileNotFound, EC_NotFound, SA_Abort, EL_Disk );
 231             return TRUE;
 232         }
 233
 234         if (CH_reg(context) != 0x08)
 235         {
 236             INT_BARF( context, 0x21 );
 237             return FALSE;
 238         }
 239
 240         switch (CL_reg(context))
 241         {
 242                 case 0x4a: /* lock logical volume */
 243                         dprintf_int(stddeb,"int21: lock logical volume (%d) level %d mode %d\n",drive,BH_reg(context),DX_reg(context));
 244                         break;
 245
 246                 case 0x60: /* get device parameters */
 247                            /* used by w4wgrp's winfile */
 248                         memset(dataptr, 0, 0x26);
 249                         dataptr[0] = 0x04;
 250                         dataptr[6] = 0; /* media type */
 251                         if (drive > 1)
 252                         {
 253                                 dataptr[1] = 0x05; /* fixed disk */
 254                                 setword(&dataptr[2], 0x01); /* non removable */
 255                                 setword(&dataptr[4], 0x300); /* # of cylinders */
 256                         }
 257                         else
 258                         {
 259                                 dataptr[1] = 0x07; /* block dev, floppy */
 260                                 setword(&dataptr[2], 0x02); /* removable */
 261                                 setword(&dataptr[4], 80); /* # of cylinders */
 262                         }
 263                         CreateBPB(drive, &dataptr[7]);
 264                         RESET_CFLAG(context);
 265                         break;
 266
 267                 case 0x66:/*  get disk serial number */
 268                         {
 269                                 char    label[12],fsname[9],path[4];
 270                                 DWORD   serial;
 271
 272                                 strcpy(path,"x:\\");path[0]=drive+'A';
 273                                 GetVolumeInformation32A(
 274                                         path,label,12,&serial,NULL,NULL,fsname,9
 275                                 );
 276                                 *(WORD*)dataptr         = 0;
 277                                 memcpy(dataptr+2,&serial,4);
 278                                 memcpy(dataptr+6,label  ,11);
 279                                 memcpy(dataptr+17,fsname,8);
 280                         }
 281                         break;
 282
 283                 case 0x6a:
 284                         dprintf_int(stddeb,"int21: logical volume %d unlocked.\n",drive);
 285                         break;
 286
 287                 default:
 288                         INT_BARF( context, 0x21 );
 289         }
 290         return FALSE;
 291 }
 292
 293 static void INT21_GetSystemDate( CONTEXT *context )
 294 {
 295     SYSTEMTIME systime;
 296     GetLocalTime( &systime );
 297     CX_reg(context) = systime.wYear;
 298     DX_reg(context) = (systime.wMonth << 8) | systime.wDay;
 299     AX_reg(context) = systime.wDayOfWeek;
 300 }
 301
 302 static void INT21_GetSystemTime( CONTEXT *context )
 303 {
 304     SYSTEMTIME systime;
 305     GetLocalTime( &systime );
 306     CX_reg(context) = (systime.wHour << 8) | systime.wMinute;
 307     DX_reg(context) = (systime.wSecond << 8) | (systime.wMilliseconds / 10);
 308 }
 309
 310 static BOOL32 INT21_CreateFile( CONTEXT *context )
 311 {
 312     AX_reg(context) = _lcreat16( PTR_SEG_OFF_TO_LIN( DS_reg(context),
 313                                           DX_reg(context) ), CX_reg(context) );
 314     return (AX_reg(context) == (WORD)HFILE_ERROR16);
 315 }
 316
 317
 318 static void OpenExistingFile( CONTEXT *context )
 319 {
 320     AX_reg(context) = _lopen16( PTR_SEG_OFF_TO_LIN(DS_reg(context),DX_reg(context)),
 321                               AL_reg(context) );
 322     if (AX_reg(context) == (WORD)HFILE_ERROR16)
 323     {
 324         AX_reg(context) = DOS_ExtendedError;
 325         SET_CFLAG(context);
 326     }
 327 #if 0
 328     {
 329         int handle;
 330         int mode;
 331         int lock;
 332
 333         switch (AX_reg(context) & 0x0070)
 334         {
 335           case 0x00:    /* compatability mode */
 336           case 0x40:    /* DENYNONE */
 337             lock = -1;
 338             break;
 339
 340           case 0x30:    /* DENYREAD */
 341             dprintf_int(stddeb,
 342               "OpenExistingFile (%s): DENYREAD changed to DENYALL\n",
 343               (char *)PTR_SEG_OFF_TO_LIN(DS_reg(context),DX_reg(context)));
 344           case 0x10:    /* DENYALL */
 345             lock = LOCK_EX;
 346             break;
 347
 348           case 0x20:    /* DENYWRITE */
 349             lock = LOCK_SH;
 350             break;
 351
 352           default:
 353             lock = -1;
 354         }
 355
 356         if (lock != -1)
 357         {
 358
 359           int result,retries=sharing_retries;
 360           {
 361 #if defined(__svr4__) || defined(_SCO_DS)
 362               printf("Should call flock and needs porting to lockf\n");
 363               result = 0;
 364               retries = 0;
 365 #else
 366             result = flock(handle, lock | LOCK_NB);
 367 #endif
 368             if ( retries && (!result) )
 369             {
 370               int i;
 371               for(i=0;i<32768*((int)sharing_pause);i++)
 372                   result++;                          /* stop the optimizer */
 373               for(i=0;i<32768*((int)sharing_pause);i++)
 374                   result--;
 375             }
 376           }
 377           while( (!result) && (!(retries--)) );
 378
 379           if(result)
 380           {
 381             errno_to_doserr();
 382             AX_reg(context) = DOS_ExtendedError;
 383             close(handle);
 384             SET_CFLAG(context);
 385             return;
 386           }
 387
 388         }
 389
 390         Error (0,0,0);
 391         AX_reg(context) = handle;
 392         RESET_CFLAG(context);
 393     }
 394 #endif
 395 }
 396
 397 static void CloseFile( CONTEXT *context )
 398 {
 399     if ((AX_reg(context) = _lclose16( BX_reg(context) )) != 0)
 400     {
 401         AX_reg(context) = DOS_ExtendedError;
 402         SET_CFLAG(context);
 403     }
 404 }
 405
 406 static BOOL32 INT21_ExtendedOpenCreateFile(CONTEXT *context )
 407 {
 408   BOOL32 bExtendedError = FALSE;
 409   BYTE action = DL_reg(context);
 410
 411   /* Shuffle arguments to call OpenExistingFile */
 412   AL_reg(context) = BL_reg(context);
 413   DX_reg(context) = SI_reg(context);
 414   /* BX,CX and DX should be preserved */
 415   OpenExistingFile(context);
 416
 417   if ((EFL_reg(context) & 0x0001) == 0) /* File exists */
 418   {
 419       UINT16    uReturnCX = 0;
 420
 421       /* Now decide what do do */
 422
 423       if ((action & 0x07) == 0)
 424       {
 425           BX_reg(context) = AX_reg(context);
 426           CloseFile(context);
 427           AX_reg(context) = 0x0050;     /*File exists*/
 428           SET_CFLAG(context);
 429           dprintf_int(stddeb, "int21: extended open/create: failed because file exists \n");
 430       }
 431       else if ((action & 0x07) == 2)
 432       {
 433         /* Truncate it, but first check if opened for write */
 434         if ((BL_reg(context) & 0x0007)== 0)
 435         {
 436                   BX_reg(context) = AX_reg(context);
 437                   CloseFile(context);
 438                   dprintf_int(stddeb, "int21: extended open/create: failed, trunc on ro file");
 439                   AX_reg(context) = 0x000C;     /*Access code invalid*/
 440                   SET_CFLAG(context);
 441         }
 442         else
 443         {
 444                 /* Shuffle arguments to call CloseFile while
 445                  * preserving BX and DX */
 446
 447                 dprintf_int(stddeb, "int21: extended open/create: Closing before truncate\n");
 448                 BX_reg(context) = AX_reg(context);
 449                 CloseFile(context);
 450                 if (EFL_reg(context) & 0x0001)
 451                 {
 452                    dprintf_int(stddeb, "int21: extended open/create: close before trunc failed");
 453                    AX_reg(context) = 0x0019;    /*Seek Error*/
 454                    CX_reg(context) = 0;
 455                    SET_CFLAG(context);
 456                 }
 457                 /* Shuffle arguments to call CreateFile */
 458
 459                 dprintf_int(stddeb, "int21: extended open/create: Truncating\n");
 460                 AL_reg(context) = BL_reg(context);
 461                 /* CX is still the same */
 462                 DX_reg(context) = SI_reg(context);
 463                 bExtendedError = INT21_CreateFile(context);
 464
 465                 if (EFL_reg(context) & 0x0001)  /*no file open, flags set */
 466                 {
 467                     dprintf_int(stddeb, "int21: extended open/create: trunc failed");
 468                     return bExtendedError;
 469                 }
 470                 uReturnCX = 0x3;
 471         }
 472       }
 473       else uReturnCX = 0x1;
 474
 475       CX_reg(context) = uReturnCX;
 476   }
 477   else /* file does not exist */
 478   {
 479       RESET_CFLAG(context); /* was set by OpenExistingFile(context) */
 480       if ((action & 0xF0)== 0)
 481       {
 482         CX_reg(context) = 0;
 483         SET_CFLAG(context);
 484         dprintf_int(stddeb, "int21: extended open/create: failed, file dosen't exist\n");
 485       }
 486       else
 487       {
 488         /* Shuffle arguments to call CreateFile */
 489         dprintf_int(stddeb, "int21: extended open/create: Creating\n");
 490         AL_reg(context) = BL_reg(context);
 491         /* CX should still be the same */
 492         DX_reg(context) = SI_reg(context);
 493         bExtendedError = INT21_CreateFile(context);
 494         if (EFL_reg(context) & 0x0001)  /*no file open, flags set */
 495         {
 496             dprintf_int(stddeb, "int21: extended open/create: create failed\n");
 497             return bExtendedError;
 498         }
 499         CX_reg(context) = 2;
 500       }
 501   }
 502
 503   return bExtendedError;
 504 }
 505
 506
 507 static BOOL32 INT21_ChangeDir( CONTEXT *context )
 508 {
 509     int drive;
 510     char *dirname = PTR_SEG_OFF_TO_LIN(DS_reg(context),DX_reg(context));
 511
 512     dprintf_int(stddeb,"int21: changedir %s\n", dirname);
 513     if (dirname[0] && (dirname[1] == ':'))
 514     {
 515         drive = toupper(dirname[0]) - 'A';
 516         dirname += 2;
 517     }
 518     else drive = DRIVE_GetCurrentDrive();
 519     return DRIVE_Chdir( drive, dirname );
 520 }
 521
 522
 523 static int INT21_FindFirst( CONTEXT *context )
 524 {
 525     char *p;
 526     const char *path;
 527     DOS_FULL_NAME full_name;
 528     FINDFILE_DTA *dta = (FINDFILE_DTA *)GetCurrentDTA();
 529
 530     path = (const char *)PTR_SEG_OFF_TO_LIN(DS_reg(context), DX_reg(context));
 531     dta->unixPath = NULL;
 532     if (!DOSFS_GetFullName( path, FALSE, &full_name ))
 533     {
 534         AX_reg(context) = DOS_ExtendedError;
 535         SET_CFLAG(context);
 536         return 0;
 537     }
 538     dta->unixPath = xstrdup( full_name.long_name );
 539     p = strrchr( dta->unixPath, '/' );
 540     *p = '\0';
 541
 542     /* Note: terminating NULL in dta->mask overwrites dta->search_attr
 543      *       (doesn't matter as it is set below anyway)
 544      */
 545     if (!DOSFS_ToDosFCBFormat( p + 1, dta->mask ))
 546     {
 547         free( dta->unixPath );
 548         dta->unixPath = NULL;
 549         DOS_ERROR( ER_FileNotFound, EC_NotFound, SA_Abort, EL_Disk );
 550         AX_reg(context) = ER_FileNotFound;
 551         SET_CFLAG(context);
 552         return 0;
 553     }
 554     dta->drive = (path[0] && (path[1] == ':')) ? toupper(path[0]) - 'A'
 555                                                : DRIVE_GetCurrentDrive();
 556     dta->count = 0;
 557     dta->search_attr = CL_reg(context);
 558     return 1;
 559 }
 560
 561
 562 static int INT21_FindNext( CONTEXT *context )
 563 {
 564     FINDFILE_DTA *dta = (FINDFILE_DTA *)GetCurrentDTA();
 565     WIN32_FIND_DATA32A entry;
 566     int count;
 567
 568     if (!dta->unixPath) return 0;
 569     if (!(count = DOSFS_FindNext( dta->unixPath, dta->mask, NULL, dta->drive,
 570                                   dta->search_attr, dta->count, &entry )))
 571     {
 572         free( dta->unixPath );
 573         dta->unixPath = NULL;
 574         return 0;
 575     }
 576     if ((int)dta->count + count > 0xffff)
 577     {
 578         fprintf( stderr, "Too many directory entries in %s\n", dta->unixPath );
 579         free( dta->unixPath );
 580         dta->unixPath = NULL;
 581         return 0;
 582     }
 583     dta->count += count;
 584     dta->fileattr = entry.dwFileAttributes;
 585     dta->filesize = entry.nFileSizeLow;
 586     FileTimeToDosDateTime( &entry.ftLastWriteTime,
 587                            &dta->filedate, &dta->filetime );
 588     strcpy( dta->filename, entry.cAlternateFileName );
 589     return 1;
 590 }
 591
 592
 593 static BOOL32 INT21_CreateTempFile( CONTEXT *context )
 594 {
 595     static int counter = 0;
 596     char *name = PTR_SEG_OFF_TO_LIN( DS_reg(context), DX_reg(context) );
 597     char *p = name + strlen(name);
 598
 599     for (;;)
 600     {
 601         sprintf( p, "wine%04x.%03d", (int)getpid(), counter );
 602         counter = (counter + 1) % 1000;
 603
 604         if ((AX_reg(context) = _lcreat_uniq( name, 0 )) != (WORD)HFILE_ERROR16)
 605         {
 606             dprintf_int( stddeb, "INT21_CreateTempFile: created %s\n", name );
 607             return TRUE;
 608         }
 609         if (DOS_ExtendedError != ER_FileExists) return FALSE;
 610     }
 611 }
 612
 613
 614 static BOOL32 INT21_GetCurrentDirectory( CONTEXT *context )
 615 {
 616     int drive = DOS_GET_DRIVE( DL_reg(context) );
 617     char *ptr = (char *)PTR_SEG_OFF_TO_LIN( DS_reg(context), SI_reg(context) );
 618
 619     if (!DRIVE_IsValid(drive))
 620     {
 621         DOS_ERROR( ER_InvalidDrive, EC_NotFound, SA_Abort, EL_Disk );
 622         return FALSE;
 623     }
 624     lstrcpyn32A( ptr, DRIVE_GetDosCwd(drive), 64 );
 625     AX_reg(context) = 0x0100;                        /* success return code */
 626     return TRUE;
 627 }
 628
 629
 630 static int INT21_GetDiskSerialNumber( CONTEXT *context )
 631 {
 632     BYTE *dataptr = PTR_SEG_OFF_TO_LIN(DS_reg(context), DX_reg(context));
 633     int drive = DOS_GET_DRIVE( BL_reg(context) );
 634
 635     if (!DRIVE_IsValid(drive))
 636     {
 637         DOS_ERROR( ER_InvalidDrive, EC_NotFound, SA_Abort, EL_Disk );
 638         return 0;
 639     }
 640
 641     *(WORD *)dataptr = 0;
 642     *(DWORD *)(dataptr + 2) = DRIVE_GetSerialNumber( drive );
 643     memcpy( dataptr + 6, DRIVE_GetLabel( drive ), 11 );
 644     strncpy(dataptr + 0x11, "FAT16   ", 8);
 645     return 1;
 646 }
 647
 648
 649 static int INT21_SetDiskSerialNumber( CONTEXT *context )
 650 {
 651     BYTE *dataptr = PTR_SEG_OFF_TO_LIN(DS_reg(context), DX_reg(context));
 652     int drive = DOS_GET_DRIVE( BL_reg(context) );
 653
 654     if (!DRIVE_IsValid(drive))
 655     {
 656         DOS_ERROR( ER_InvalidDrive, EC_NotFound, SA_Abort, EL_Disk );
 657         return 0;
 658     }
 659
 660     DRIVE_SetSerialNumber( drive, *(DWORD *)(dataptr + 2) );
 661     return 1;
 662 }
 663
 664
 665 /* microsoft's programmers should be shot for using CP/M style int21
 666    calls in Windows for Workgroup's winfile.exe */
 667
 668 static int INT21_FindFirstFCB( CONTEXT *context )
 669 {
 670     BYTE *fcb = (BYTE *)PTR_SEG_OFF_TO_LIN(DS_reg(context), DX_reg(context));
 671     FINDFILE_FCB *pFCB;
 672     LPCSTR root, cwd;
 673     int drive;
 674
 675     if (*fcb == 0xff) pFCB = (FINDFILE_FCB *)(fcb + 7);
 676     else pFCB = (FINDFILE_FCB *)fcb;
 677     drive = DOS_GET_DRIVE( pFCB->drive );
 678     root = DRIVE_GetRoot( drive );
 679     cwd  = DRIVE_GetUnixCwd( drive );
 680     pFCB->unixPath = HeapAlloc( GetProcessHeap(), 0,
 681                                 strlen(root)+strlen(cwd)+2 );
 682     if (!pFCB->unixPath) return 0;
 683     strcpy( pFCB->unixPath, root );
 684     strcat( pFCB->unixPath, "/" );
 685     strcat( pFCB->unixPath, cwd );
 686     pFCB->count = 0;
 687     return 1;
 688 }
 689
 690
 691 static int INT21_FindNextFCB( CONTEXT *context )
 692 {
 693     BYTE *fcb = (BYTE *)PTR_SEG_OFF_TO_LIN(DS_reg(context), DX_reg(context));
 694     FINDFILE_FCB *pFCB;
 695     DOS_DIRENTRY_LAYOUT *pResult = (DOS_DIRENTRY_LAYOUT *)GetCurrentDTA();
 696     WIN32_FIND_DATA32A entry;
 697     BYTE attr;
 698     int count;
 699
 700     if (*fcb == 0xff)
 701     {
 702         attr = fcb[6];
 703         pFCB = (FINDFILE_FCB *)(fcb + 7);
 704     }
 705     else
 706     {
 707         attr = 0;
 708         pFCB = (FINDFILE_FCB *)fcb;
 709     }
 710
 711     if (!pFCB->unixPath) return 0;
 712     if (!(count = DOSFS_FindNext( pFCB->unixPath, pFCB->filename, NULL,
 713                                   DOS_GET_DRIVE( pFCB->drive ), attr,
 714                                   pFCB->count, &entry )))
 715     {
 716         HeapFree( GetProcessHeap(), 0, pFCB->unixPath );
 717         pFCB->unixPath = NULL;
 718         return 0;
 719     }
 720     pFCB->count += count;
 721
 722     pResult->fileattr = entry.dwFileAttributes;
 723     pResult->cluster  = 0;  /* what else? */
 724     pResult->filesize = entry.nFileSizeLow;
 725     memset( pResult->reserved, 0, sizeof(pResult->reserved) );
 726     FileTimeToDosDateTime( &entry.ftLastWriteTime,
 727                            &pResult->filedate, &pResult->filetime );
 728
 729     /* Convert file name to FCB format */
 730
 731     memset( pResult->filename, ' ', sizeof(pResult->filename) );
 732     if (!strcmp( entry.cAlternateFileName, "." )) pResult->filename[0] = '.';
 733     else if (!strcmp( entry.cAlternateFileName, ".." ))
 734         pResult->filename[0] = pResult->filename[1] = '.';
 735     else
 736     {
 737         char *p = strrchr( entry.cAlternateFileName, '.' );
 738         if (p && p[1] && (p != entry.cAlternateFileName))
 739         {
 740             memcpy( pResult->filename, entry.cAlternateFileName,
 741                     MIN( (p - entry.cAlternateFileName), 8 ) );
 742             memcpy( pResult->filename + 8, p + 1, MIN( strlen(p), 3 ) );
 743         }
 744         else
 745             memcpy( pResult->filename, entry.cAlternateFileName,
 746                     MIN( strlen(entry.cAlternateFileName), 8 ) );
 747     }
 748     return 1;
 749 }
 750
 751
 752 static void DeleteFileFCB( CONTEXT *context )
 753 {
 754     fprintf( stderr, "DeleteFileFCB: not implemented yet\n" );
 755 }
 756
 757 static void RenameFileFCB( CONTEXT *context )
 758 {
 759     fprintf( stderr, "RenameFileFCB: not implemented yet\n" );
 760 }
 761
 762
 763
 764 static void fLock( CONTEXT * context )
 765 {
 766
 767     switch ( AX_reg(context) & 0xff )
 768     {
 769         case 0x00: /* LOCK */
 770           if (!LockFile(BX_reg(context),
 771                         MAKELONG(DX_reg(context),CX_reg(context)), 0,
 772                         MAKELONG(DI_reg(context),SI_reg(context)), 0)) {
 773             AX_reg(context) = DOS_ExtendedError;
 774             SET_CFLAG(context);
 775           }
 776           break;
 777
 778         case 0x01: /* UNLOCK */
 779           if (!UnlockFile(BX_reg(context),
 780                           MAKELONG(DX_reg(context),CX_reg(context)), 0,
 781                           MAKELONG(DI_reg(context),SI_reg(context)), 0)) {
 782             AX_reg(context) = DOS_ExtendedError;
 783             SET_CFLAG(context);
 784           }
 785           return;
 786         default:
 787           AX_reg(context) = 0x0001;
 788           SET_CFLAG(context);
 789           return;
 790      }
 791 }
 792
 793
 794 extern void LOCAL_PrintHeap (WORD ds);
 795
 796 /***********************************************************************
 797  *           DOS3Call  (KERNEL.102)
 798  */
 799 void WINAPI DOS3Call( CONTEXT *context )
 800 {
 801     BOOL32      bSetDOSExtendedError = FALSE;
 802
 803     dprintf_int( stddeb, "int21: AX=%04x BX=%04x CX=%04x DX=%04x "
 804                  "SI=%04x DI=%04x DS=%04x ES=%04x EFL=%08lx\n",
 805                  AX_reg(context), BX_reg(context), CX_reg(context),
 806                  DX_reg(context), SI_reg(context), DI_reg(context),
 807                  (WORD)DS_reg(context), (WORD)ES_reg(context),
 808                  EFL_reg(context) );
 809
 810     if (AH_reg(context) == 0x59)  /* Get extended error info */
 811     {
 812         AX_reg(context) = DOS_ExtendedError;
 813         BH_reg(context) = DOS_ErrorClass;
 814         BL_reg(context) = DOS_ErrorAction;
 815         CH_reg(context) = DOS_ErrorLocus;
 816         return;
 817     }
 818
 819     DOS_ERROR( 0, 0, 0, 0 );
 820     RESET_CFLAG(context);  /* Not sure if this is a good idea */
 821
 822     switch(AH_reg(context))
 823     {
 824     case 0x00: /* TERMINATE PROGRAM */
 825         TASK_KillCurrentTask( 0 );
 826         break;
 827
 828     case 0x01: /* READ CHARACTER FROM STANDARD INPUT, WITH ECHO */
 829     case 0x02: /* WRITE CHARACTER TO STANDARD OUTPUT */
 830     case 0x03: /* READ CHARACTER FROM STDAUX  */
 831     case 0x04: /* WRITE CHARACTER TO STDAUX */
 832     case 0x05: /* WRITE CHARACTER TO PRINTER */
 833     case 0x06: /* DIRECT CONSOLE IN/OUTPUT */
 834     case 0x07: /* DIRECT CHARACTER INPUT, WITHOUT ECHO */
 835     case 0x08: /* CHARACTER INPUT WITHOUT ECHO */
 836     case 0x09: /* WRITE STRING TO STANDARD OUTPUT */
 837     case 0x0a: /* BUFFERED INPUT */
 838     case 0x0b: /* GET STDIN STATUS */
 839     case 0x0c: /* FLUSH BUFFER AND READ STANDARD INPUT */
 840     case 0x0f: /* OPEN FILE USING FCB */
 841     case 0x10: /* CLOSE FILE USING FCB */
 842     case 0x14: /* SEQUENTIAL READ FROM FCB FILE */
 843     case 0x15: /* SEQUENTIAL WRITE TO FCB FILE */
 844     case 0x16: /* CREATE OR TRUNCATE FILE USING FCB */
 845     case 0x21: /* READ RANDOM RECORD FROM FCB FILE */
 846     case 0x22: /* WRITE RANDOM RECORD TO FCB FILE */
 847     case 0x23: /* GET FILE SIZE FOR FCB */
 848     case 0x24: /* SET RANDOM RECORD NUMBER FOR FCB */
 849     case 0x26: /* CREATE NEW PROGRAM SEGMENT PREFIX */
 850     case 0x27: /* RANDOM BLOCK READ FROM FCB FILE */
 851     case 0x28: /* RANDOM BLOCK WRITE TO FCB FILE */
 852     case 0x29: /* PARSE FILENAME INTO FCB */
 853     case 0x2e: /* SET VERIFY FLAG */
 854     case 0x37: /* "SWITCHAR" - GET SWITCH CHARACTER
 855                   "SWITCHAR" - SET SWITCH CHARACTER
 856                   "AVAILDEV" - SPECIFY \DEV\ PREFIX USE */
 857     case 0x54: /* GET VERIFY FLAG */
 858         INT_BARF( context, 0x21 );
 859         break;
 860
 861     case 0x18: /* NULL FUNCTIONS FOR CP/M COMPATIBILITY */
 862     case 0x1d:
 863     case 0x1e:
 864     case 0x20:
 865     case 0x6b: /* NULL FUNCTION */
 866         AL_reg(context) = 0;
 867         break;
 868
 869     case 0x5c: /* "FLOCK" - RECORD LOCKING */
 870         fLock(context);
 871         break;
 872
 873     case 0x0d: /* DISK BUFFER FLUSH */
 874         RESET_CFLAG(context); /* dos 6+ only */
 875         break;
 876
 877     case 0x0e: /* SELECT DEFAULT DRIVE */
 878         DRIVE_SetCurrentDrive( DL_reg(context) );
 879         AL_reg(context) = MAX_DOS_DRIVES;
 880         break;
 881
 882     case 0x11: /* FIND FIRST MATCHING FILE USING FCB */
 883         if (!INT21_FindFirstFCB(context))
 884         {
 885             AL_reg(context) = 0xff;
 886             break;
 887         }
 888         /* else fall through */
 889
 890     case 0x12: /* FIND NEXT MATCHING FILE USING FCB */
 891         AL_reg(context) = INT21_FindNextFCB(context) ? 0x00 : 0xff;
 892         break;
 893
 894     case 0x13: /* DELETE FILE USING FCB */
 895         DeleteFileFCB(context);
 896         break;
 897
 898     case 0x17: /* RENAME FILE USING FCB */
 899         RenameFileFCB(context);
 900         break;
 901
 902     case 0x19: /* GET CURRENT DEFAULT DRIVE */
 903         AL_reg(context) = DRIVE_GetCurrentDrive();
 904         break;
 905
 906     case 0x1a: /* SET DISK TRANSFER AREA ADDRESS */
 907         {
 908             TDB *pTask = (TDB *)GlobalLock16( GetCurrentTask() );
 909             pTask->dta = PTR_SEG_OFF_TO_SEGPTR(DS_reg(context),DX_reg(context));
 910             dprintf_int(stddeb, "int21: Set DTA: %08lx\n", pTask->dta);
 911         }
 912         break;
 913
 914     case 0x1b: /* GET ALLOCATION INFORMATION FOR DEFAULT DRIVE */
 915         DL_reg(context) = 0;
 916         if (!INT21_GetDriveAllocInfo(context)) AX_reg(context) = 0xffff;
 917         break;
 918
 919     case 0x1c: /* GET ALLOCATION INFORMATION FOR SPECIFIC DRIVE */
 920         if (!INT21_GetDriveAllocInfo(context)) AX_reg(context) = 0xffff;
 921         break;
 922
 923     case 0x1f: /* GET DRIVE PARAMETER BLOCK FOR DEFAULT DRIVE */
 924         GetDrivePB(context, DRIVE_GetCurrentDrive());
 925         break;
 926
 927     case 0x25: /* SET INTERRUPT VECTOR */
 928         INT_SetHandler( AL_reg(context),
 929                         (FARPROC16)PTR_SEG_OFF_TO_SEGPTR( DS_reg(context),
 930                                                           DX_reg(context)));
 931         break;
 932
 933     case 0x2a: /* GET SYSTEM DATE */
 934         INT21_GetSystemDate(context);
 935         break;
 936
 937     case 0x2b: /* SET SYSTEM DATE */
 938         fprintf( stdnimp, "SetSystemDate(%02d/%02d/%04d): not allowed\n",
 939                  DL_reg(context), DH_reg(context), CX_reg(context) );
 940         AL_reg(context) = 0;  /* Let's pretend we succeeded */
 941         break;
 942
 943     case 0x2c: /* GET SYSTEM TIME */
 944         INT21_GetSystemTime(context);
 945         break;
 946
 947     case 0x2d: /* SET SYSTEM TIME */
 948         fprintf( stdnimp, "SetSystemTime(%02d:%02d:%02d.%02d): not allowed\n",
 949                  CH_reg(context), CL_reg(context),
 950                  DH_reg(context), DL_reg(context) );
 951         AL_reg(context) = 0;  /* Let's pretend we succeeded */
 952         break;
 953
 954     case 0x2f: /* GET DISK TRANSFER AREA ADDRESS */
 955         {
 956             TDB *pTask = (TDB *)GlobalLock16( GetCurrentTask() );
 957             ES_reg(context) = SELECTOROF( pTask->dta );
 958             BX_reg(context) = OFFSETOF( pTask->dta );
 959         }
 960         break;
 961
 962     case 0x30: /* GET DOS VERSION */
 963         AX_reg(context) = (HIWORD(GetVersion16()) >> 8) |
 964                           (HIWORD(GetVersion16()) << 8);
 965         BX_reg(context) = 0x0012;     /* 0x123456 is Wine's serial # */
 966         CX_reg(context) = 0x3456;
 967         break;
 968
 969     case 0x31: /* TERMINATE AND STAY RESIDENT */
 970         INT_BARF( context, 0x21 );
 971         break;
 972
 973     case 0x32: /* GET DOS DRIVE PARAMETER BLOCK FOR SPECIFIC DRIVE */
 974         GetDrivePB(context, DOS_GET_DRIVE( DL_reg(context) ) );
 975         break;
 976
 977     case 0x33: /* MULTIPLEXED */
 978         switch (AL_reg(context))
 979         {
 980               case 0x00: /* GET CURRENT EXTENDED BREAK STATE */
 981                 DL_reg(context) = 0;
 982                 break;
 983
 984               case 0x01: /* SET EXTENDED BREAK STATE */
 985                 break;
 986
 987               case 0x02: /* GET AND SET EXTENDED CONTROL-BREAK CHECKING STATE*/
 988                 DL_reg(context) = 0;
 989                 break;
 990
 991               case 0x05: /* GET BOOT DRIVE */
 992                 DL_reg(context) = 3;
 993                 /* c: is Wine's bootdrive (a: is 1)*/
 994                 break;
 995
 996               case 0x06: /* GET TRUE VERSION NUMBER */
 997                 BX_reg(context) = (HIWORD(GetVersion16() >> 8)) |
 998                                   (HIWORD(GetVersion16() << 8));
 999                 DX_reg(context) = 0x00;
1000                 break;
1001
1002               default:
1003                 INT_BARF( context, 0x21 );
1004                 break;
1005         }
1006         break;
1007
1008     case 0x34: /* GET ADDRESS OF INDOS FLAG */
1009         if (!heap) INT21_CreateHeap();
1010         ES_reg(context) = DosHeapHandle;
1011         BX_reg(context) = (int)&heap->InDosFlag - (int)heap;
1012         break;
1013
1014     case 0x35: /* GET INTERRUPT VECTOR */
1015         {
1016             FARPROC16 addr = INT_GetHandler( AL_reg(context) );
1017             ES_reg(context) = SELECTOROF(addr);
1018             BX_reg(context) = OFFSETOF(addr);
1019         }
1020         break;
1021
1022     case 0x36: /* GET FREE DISK SPACE */
1023         if (!INT21_GetFreeDiskSpace(context)) AX_reg(context) = 0xffff;
1024         break;
1025
1026     case 0x38: /* GET COUNTRY-SPECIFIC INFORMATION */
1027         AX_reg(context) = 0x02; /* no country support available */
1028         SET_CFLAG(context);
1029         break;
1030
1031     case 0x39: /* "MKDIR" - CREATE SUBDIRECTORY */
1032         bSetDOSExtendedError = (!CreateDirectory16( PTR_SEG_OFF_TO_LIN( DS_reg(context),
1033                                                            DX_reg(context) ), NULL));
1034         break;
1035
1036     case 0x3a: /* "RMDIR" - REMOVE SUBDIRECTORY */
1037         bSetDOSExtendedError = (!RemoveDirectory16( PTR_SEG_OFF_TO_LIN( DS_reg(context),
1038                                                                  DX_reg(context) )));
1039         break;
1040
1041     case 0x3b: /* "CHDIR" - SET CURRENT DIRECTORY */
1042         bSetDOSExtendedError = !INT21_ChangeDir(context);
1043         break;
1044
1045     case 0x3c: /* "CREAT" - CREATE OR TRUNCATE FILE */
1046         AX_reg(context) = _lcreat16( PTR_SEG_OFF_TO_LIN( DS_reg(context),
1047                                     DX_reg(context) ), CX_reg(context) );
1048         bSetDOSExtendedError = (AX_reg(context) == (WORD)HFILE_ERROR16);
1049         break;
1050
1051     case 0x3d: /* "OPEN" - OPEN EXISTING FILE */
1052         OpenExistingFile(context);
1053         break;
1054
1055     case 0x3e: /* "CLOSE" - CLOSE FILE */
1056         bSetDOSExtendedError = ((AX_reg(context) = _lclose16( BX_reg(context) )) != 0);
1057         break;
1058
1059     case 0x3f: /* "READ" - READ FROM FILE OR DEVICE */
1060         {
1061             LONG result = WIN16_hread( BX_reg(context),
1062                                        PTR_SEG_OFF_TO_SEGPTR( DS_reg(context),
1063                                                               DX_reg(context) ),
1064                                        CX_reg(context) );
1065             if (result == -1) bSetDOSExtendedError = TRUE;
1066             else AX_reg(context) = (WORD)result;
1067         }
1068         break;
1069
1070     case 0x40: /* "WRITE" - WRITE TO FILE OR DEVICE */
1071         {
1072             LONG result = _hwrite16( BX_reg(context),
1073                                      PTR_SEG_OFF_TO_LIN( DS_reg(context),
1074                                                          DX_reg(context) ),
1075                                      CX_reg(context) );
1076             if (result == -1) bSetDOSExtendedError = TRUE;
1077             else AX_reg(context) = (WORD)result;
1078         }
1079         break;
1080
1081     case 0x41: /* "UNLINK" - DELETE FILE */
1082         bSetDOSExtendedError = (!DeleteFile32A( PTR_SEG_OFF_TO_LIN( DS_reg(context),
1083                                                              DX_reg(context) )));
1084         break;
1085
1086     case 0x42: /* "LSEEK" - SET CURRENT FILE POSITION */
1087         {
1088             LONG status = _llseek16( BX_reg(context),
1089                                      MAKELONG(DX_reg(context),CX_reg(context)),
1090                                      AL_reg(context) );
1091             if (status == -1) bSetDOSExtendedError = TRUE;
1092             else
1093             {
1094                 AX_reg(context) = LOWORD(status);
1095                 DX_reg(context) = HIWORD(status);
1096             }
1097         }
1098         break;
1099
1100     case 0x43: /* FILE ATTRIBUTES */
1101         switch (AL_reg(context))
1102         {
1103         case 0x00:
1104             AX_reg(context) = (WORD)GetFileAttributes32A(
1105                                           PTR_SEG_OFF_TO_LIN(DS_reg(context),
1106                                                              DX_reg(context)));
1107             if (AX_reg(context) == 0xffff) bSetDOSExtendedError = TRUE;
1108             else CX_reg(context) = AX_reg(context);
1109             break;
1110
1111         case 0x01:
1112             bSetDOSExtendedError =
1113                 (!SetFileAttributes32A( PTR_SEG_OFF_TO_LIN(DS_reg(context),
1114                                                            DX_reg(context)),
1115                                                            CX_reg(context) ));
1116             break;
1117         }
1118         break;
1119
1120     case 0x44: /* IOCTL */
1121         switch (AL_reg(context))
1122         {
1123         case 0x00:
1124             ioctlGetDeviceInfo(context);
1125             break;
1126
1127         case 0x01:
1128             break;
1129         case 0x05:{     /* IOCTL - WRITE TO BLOCK DEVICE CONTROL CHANNEL */
1130             BYTE *dataptr = PTR_SEG_OFF_TO_LIN(DS_reg(context),DX_reg(context));
1131             int i;
1132             int drive = DOS_GET_DRIVE(BL_reg(context));
1133
1134             fprintf(stdnimp,"int21: program tried to write to block device control channel of drive %d:\n",drive);
1135             for (i=0;i<CX_reg(context);i++)
1136                 fprintf(stdnimp,"%02x ",dataptr[i]);
1137             fprintf(stdnimp,"\n");
1138             AX_reg(context)=CX_reg(context);
1139             break;
1140         }
1141         case 0x08:   /* Check if drive is removable. */
1142             switch(GetDriveType16( DOS_GET_DRIVE( BL_reg(context) )))
1143             {
1144             case DRIVE_CANNOTDETERMINE:
1145                 DOS_ERROR( ER_InvalidDrive, EC_NotFound, SA_Abort, EL_Disk );
1146                 AX_reg(context) = ER_InvalidDrive;
1147                 SET_CFLAG(context);
1148                 break;
1149             case DRIVE_REMOVABLE:
1150                 AX_reg(context) = 0;      /* removable */
1151                 break;
1152             default:
1153                 AX_reg(context) = 1;   /* not removable */
1154                 break;
1155             }
1156             break;
1157
1158         case 0x09:   /* CHECK IF BLOCK DEVICE REMOTE */
1159             switch(GetDriveType16( DOS_GET_DRIVE( BL_reg(context) )))
1160             {
1161             case DRIVE_CANNOTDETERMINE:
1162                 DOS_ERROR( ER_InvalidDrive, EC_NotFound, SA_Abort, EL_Disk );
1163                 AX_reg(context) = ER_InvalidDrive;
1164                 SET_CFLAG(context);
1165                 break;
1166             case DRIVE_REMOTE:
1167                 DX_reg(context) = (1<<9) | (1<<12);  /* remote */
1168                 break;
1169             default:
1170                 DX_reg(context) = 0;  /* FIXME: use driver attr here */
1171                 break;
1172             }
1173             break;
1174
1175         case 0x0a: /* check if handle (BX) is remote */
1176             /* returns DX, bit 15 set if remote, bit 14 set if date/time
1177              * not set on close
1178              */
1179             DX_reg(context) = 0;
1180             break;
1181
1182         case 0x0b:   /* SET SHARING RETRY COUNT */
1183             if (!CX_reg(context))
1184             {
1185                 AX_reg(context) = 1;
1186                 SET_CFLAG(context);
1187                 break;
1188             }
1189             sharing_pause = CX_reg(context);
1190             if (!DX_reg(context))
1191                 sharing_retries = DX_reg(context);
1192             RESET_CFLAG(context);
1193             break;
1194
1195         case 0x0d:
1196             bSetDOSExtendedError = ioctlGenericBlkDevReq(context);
1197             break;
1198
1199         case 0x0e: /* get logical drive mapping */
1200             AL_reg(context) = 0; /* drive has no mapping */
1201             break;
1202
1203         case 0x0F:   /* Set logical drive mapping */
1204             /* FIXME: Not implemented at the moment, always returns error
1205              */
1206             INT_BARF( context, 0x21 );
1207             AX_reg(context) = 0x0001; /* invalid function */
1208             SET_CFLAG(context);
1209             break;
1210
1211         default:
1212             INT_BARF( context, 0x21 );
1213             break;
1214         }
1215         break;
1216
1217     case 0x45: /* "DUP" - DUPLICATE FILE HANDLE */
1218         bSetDOSExtendedError = ((AX_reg(context) = FILE_Dup(BX_reg(context))) == (WORD)HFILE_ERROR16);
1219         break;
1220
1221     case 0x46: /* "DUP2", "FORCEDUP" - FORCE DUPLICATE FILE HANDLE */
1222         bSetDOSExtendedError = (FILE_Dup2( BX_reg(context), CX_reg(context) ) == HFILE_ERROR32);
1223         break;
1224
1225     case 0x47: /* "CWD" - GET CURRENT DIRECTORY */
1226         bSetDOSExtendedError = !INT21_GetCurrentDirectory(context);
1227         break;
1228
1229     case 0x48: /* ALLOCATE MEMORY */
1230     case 0x49: /* FREE MEMORY */
1231     case 0x4a: /* RESIZE MEMORY BLOCK */
1232         INT_BARF( context, 0x21 );
1233         break;
1234
1235     case 0x4b: /* "EXEC" - LOAD AND/OR EXECUTE PROGRAM */
1236         AX_reg(context) = WinExec16( PTR_SEG_OFF_TO_LIN( DS_reg(context),
1237                                                          DX_reg(context) ),
1238                                      SW_NORMAL );
1239         if (AX_reg(context) < 32) SET_CFLAG(context);
1240         break;
1241
1242     case 0x4c: /* "EXIT" - TERMINATE WITH RETURN CODE */
1243         TASK_KillCurrentTask( AL_reg(context) );
1244         break;
1245
1246     case 0x4d: /* GET RETURN CODE */
1247         AX_reg(context) = 0; /* normal exit */
1248         break;
1249
1250     case 0x4e: /* "FINDFIRST" - FIND FIRST MATCHING FILE */
1251         if (!INT21_FindFirst(context)) break;
1252         /* fall through */
1253
1254     case 0x4f: /* "FINDNEXT" - FIND NEXT MATCHING FILE */
1255         if (!INT21_FindNext(context))
1256         {
1257             DOS_ERROR( ER_NoMoreFiles, EC_MediaError, SA_Abort, EL_Disk );
1258             AX_reg(context) = ER_NoMoreFiles;
1259             SET_CFLAG(context);
1260         }
1261         break;
1262
1263     case 0x51: /* GET PSP ADDRESS */
1264     case 0x62: /* GET PSP ADDRESS */
1265         /* FIXME: should we return the original DOS PSP upon */
1266         /*        Windows startup ? */
1267         BX_reg(context) = GetCurrentPDB();
1268         break;
1269
1270     case 0x52: /* "SYSVARS" - GET LIST OF LISTS */
1271         ES_reg(context) = 0x0;
1272         BX_reg(context) = 0x0;
1273         INT_BARF( context, 0x21 );
1274         break;
1275
1276     case 0x56: /* "RENAME" - RENAME FILE */
1277         bSetDOSExtendedError =
1278                 (!MoveFile32A( PTR_SEG_OFF_TO_LIN(DS_reg(context),DX_reg(context)),
1279                                PTR_SEG_OFF_TO_LIN(ES_reg(context),DI_reg(context))));
1280         break;
1281
1282     case 0x57: /* FILE DATE AND TIME */
1283         switch (AL_reg(context))
1284         {
1285         case 0x00:  /* Get */
1286             {
1287                 FILETIME filetime;
1288                 if (!GetFileTime( BX_reg(context), NULL, NULL, &filetime ))
1289                      bSetDOSExtendedError = TRUE;
1290                 else FileTimeToDosDateTime( &filetime, &DX_reg(context),
1291                                             &CX_reg(context) );
1292             }
1293             break;
1294
1295         case 0x01:  /* Set */
1296             {
1297                 FILETIME filetime;
1298                 DosDateTimeToFileTime( DX_reg(context), CX_reg(context),
1299                                        &filetime );
1300                 bSetDOSExtendedError =
1301                         (!SetFileTime( BX_reg(context), NULL, NULL, &filetime ));
1302             }
1303             break;
1304         }
1305         break;
1306
1307     case 0x58: /* GET OR SET MEMORY/UMB ALLOCATION STRATEGY */
1308         switch (AL_reg(context))
1309         {
1310         case 0x00:
1311             AX_reg(context) = 1;
1312             break;
1313         case 0x02:
1314             AX_reg(context) = 0;
1315             break;
1316         case 0x01:
1317         case 0x03:
1318             break;
1319         }
1320         RESET_CFLAG(context);
1321         break;
1322
1323     case 0x5a: /* CREATE TEMPORARY FILE */
1324         bSetDOSExtendedError = !INT21_CreateTempFile(context);
1325         break;
1326
1327     case 0x5b: /* CREATE NEW FILE */
1328         bSetDOSExtendedError = ((AX_reg(context) =
1329                 _lcreat_uniq( PTR_SEG_OFF_TO_LIN(DS_reg(context),DX_reg(context)), 0 ))
1330                                                                 == (WORD)HFILE_ERROR16);
1331         break;
1332
1333     case 0x5d: /* NETWORK */
1334     case 0x5e:
1335         /* network software not installed */
1336         DOS_ERROR( ER_NoNetwork, EC_NotFound, SA_Abort, EL_Network );
1337         bSetDOSExtendedError = TRUE;
1338         break;
1339
1340     case 0x5f: /* NETWORK */
1341         switch (AL_reg(context))
1342         {
1343         case 0x07: /* ENABLE DRIVE */
1344             if (!DRIVE_Enable( DL_reg(context) ))
1345             {
1346                 DOS_ERROR( ER_InvalidDrive, EC_MediaError, SA_Abort, EL_Disk );
1347                 bSetDOSExtendedError = TRUE;
1348             }
1349             break;
1350
1351         case 0x08: /* DISABLE DRIVE */
1352             if (!DRIVE_Disable( DL_reg(context) ))
1353             {
1354                 DOS_ERROR( ER_InvalidDrive, EC_MediaError, SA_Abort, EL_Disk );
1355                 bSetDOSExtendedError = TRUE;
1356             }
1357             break;
1358
1359         default:
1360             /* network software not installed */
1361             DOS_ERROR( ER_NoNetwork, EC_NotFound, SA_Abort, EL_Network );
1362             bSetDOSExtendedError = TRUE;
1363             break;
1364         }
1365         break;
1366
1367     case 0x60: /* "TRUENAME" - CANONICALIZE FILENAME OR PATH */
1368         {
1369             if (!GetFullPathName32A( PTR_SEG_OFF_TO_LIN(DS_reg(context),
1370                                                         SI_reg(context)), 128,
1371                                      PTR_SEG_OFF_TO_LIN(ES_reg(context),
1372                                                         DI_reg(context)),NULL))
1373                 bSetDOSExtendedError = TRUE;
1374             else AX_reg(context) = 0;
1375         }
1376         break;
1377
1378     case 0x61: /* UNUSED */
1379     case 0x63: /* UNUSED */
1380     case 0x64: /* OS/2 DOS BOX */
1381         INT_BARF( context, 0x21 );
1382         SET_CFLAG(context);
1383         break;
1384
1385     case 0x65:{/* GET EXTENDED COUNTRY INFORMATION */
1386         extern WORD WINE_LanguageId;
1387         BYTE    *dataptr=PTR_SEG_OFF_TO_LIN(ES_reg(context),DI_reg(context));;
1388         switch (AL_reg(context)) {
1389         case 0x01:
1390             dataptr[0] = 0x1;
1391             *(WORD*)(dataptr+1) = 41;
1392             *(WORD*)(dataptr+3) = WINE_LanguageId;
1393             *(WORD*)(dataptr+5) = CodePage;
1394             break;
1395         case 0x06:
1396             dataptr[0] = 0x06;
1397             *(DWORD*)(dataptr+1) = MAKELONG(DOSMEM_CollateTable & 0xFFFF,DOSMEM_AllocSelector(DOSMEM_CollateTable>>16));
1398             CX_reg(context)         = 258;/*FIXME: size of table?*/
1399             break;
1400         default:
1401             INT_BARF( context, 0x21 );
1402             SET_CFLAG(context);
1403             break;
1404         }
1405         break;
1406     }
1407     case 0x66: /* GLOBAL CODE PAGE TABLE */
1408         switch (AL_reg(context))
1409         {
1410         case 0x01:
1411             DX_reg(context) = BX_reg(context) = CodePage;
1412             RESET_CFLAG(context);
1413             break;
1414         case 0x02:
1415             CodePage = BX_reg(context);
1416             RESET_CFLAG(context);
1417             break;
1418         }
1419         break;
1420
1421     case 0x67: /* SET HANDLE COUNT */
1422         SetHandleCount16( BX_reg(context) );
1423         if (DOS_ExtendedError) bSetDOSExtendedError = TRUE;
1424         break;
1425
1426     case 0x68: /* "FFLUSH" - COMMIT FILE */
1427     case 0x6a: /* COMMIT FILE */
1428         bSetDOSExtendedError = (!FlushFileBuffers( BX_reg(context) ));
1429         break;
1430
1431     case 0x69: /* DISK SERIAL NUMBER */
1432         switch (AL_reg(context))
1433         {
1434         case 0x00:
1435             if (!INT21_GetDiskSerialNumber(context)) bSetDOSExtendedError = TRUE;
1436             else AX_reg(context) = 0;
1437             break;
1438
1439         case 0x01:
1440             if (!INT21_SetDiskSerialNumber(context)) bSetDOSExtendedError = TRUE;
1441             else AX_reg(context) = 1;
1442             break;
1443         }
1444         break;
1445
1446     case 0x6C: /* Extended Open/Create*/
1447         bSetDOSExtendedError = INT21_ExtendedOpenCreateFile(context);
1448         break;
1449
1450     case 0x71: /* MS-DOS 7 (Windows95) - LONG FILENAME FUNCTIONS */
1451         switch(AL_reg(context))
1452         {
1453         case 0x39:  /* Create directory */
1454             bSetDOSExtendedError = (!CreateDirectory32A(
1455                                         PTR_SEG_OFF_TO_LIN( DS_reg(context),
1456                                                   DX_reg(context) ), NULL));
1457             break;
1458         case 0x3a:  /* Remove directory */
1459             bSetDOSExtendedError = (!RemoveDirectory32A(
1460                                         PTR_SEG_OFF_TO_LIN( DS_reg(context),
1461                                                         DX_reg(context) )));
1462             break;
1463         case 0x43:  /* Get/Set file attributes */
1464         switch (BL_reg(context))
1465         {
1466         case 0x00: /* Get file attributes */
1467             CX_reg(context) = (WORD)GetFileAttributes32A(
1468                                           PTR_SEG_OFF_TO_LIN(DS_reg(context),
1469                                                              DX_reg(context)));
1470             if (CX_reg(context) == 0xffff) bSetDOSExtendedError = TRUE;
1471             break;
1472         case 0x01:
1473             bSetDOSExtendedError = (!SetFileAttributes32A(
1474                                         PTR_SEG_OFF_TO_LIN(DS_reg(context),
1475                                                            DX_reg(context)),
1476                                         CX_reg(context)  ) );
1477             break;
1478         default:
1479           fprintf( stderr,
1480                    "Unimplemented int21 long file name function:\n");
1481           INT_BARF( context, 0x21 );
1482           SET_CFLAG(context);
1483           AL_reg(context) = 0;
1484           break;
1485         }
1486         break;
1487         case 0x47:  /* Get current directory */
1488             bSetDOSExtendedError = !INT21_GetCurrentDirectory(context);
1489             break;
1490
1491         case 0x4e:  /* Find first file */
1492             /* FIXME: use attributes in CX */
1493             if ((AX_reg(context) = FindFirstFile16(
1494                    PTR_SEG_OFF_TO_LIN(DS_reg(context),DX_reg(context)),
1495                    (WIN32_FIND_DATA32A *)PTR_SEG_OFF_TO_LIN(ES_reg(context),
1496                                                             DI_reg(context))))
1497                 == INVALID_HANDLE_VALUE16)
1498                 bSetDOSExtendedError = TRUE;
1499             break;
1500         case 0x4f:  /* Find next file */
1501             if (!FindNextFile16( BX_reg(context),
1502                     (WIN32_FIND_DATA32A *)PTR_SEG_OFF_TO_LIN(ES_reg(context),
1503                                                              DI_reg(context))))
1504                 bSetDOSExtendedError = TRUE;
1505             break;
1506         case 0xa1:  /* Find close */
1507             bSetDOSExtendedError = (!FindClose16( BX_reg(context) ));
1508             break;
1509         case 0xa0:
1510             break;
1511         case 0x60:
1512           switch(CL_reg(context))
1513           {
1514             case 0x02:  /*Get canonical long filename or path */
1515               if (!GetFullPathName32A
1516                   ( PTR_SEG_OFF_TO_LIN(DS_reg(context),
1517                                        SI_reg(context)), 128,
1518                     PTR_SEG_OFF_TO_LIN(ES_reg(context),
1519                                        DI_reg(context)),NULL))
1520                 bSetDOSExtendedError = TRUE;
1521               else AX_reg(context) = 0;
1522               break;
1523             default:
1524               fprintf( stderr,
1525                        "Unimplemented int21 long file name function:\n");
1526               INT_BARF( context, 0x21 );
1527               SET_CFLAG(context);
1528               AL_reg(context) = 0;
1529               break;
1530           }
1531             break;
1532         case 0x6c:  /* Create or open file */
1533           /* translate Dos 7 action to Dos 6 action */
1534             bSetDOSExtendedError = INT21_ExtendedOpenCreateFile(context);
1535             break;
1536
1537         case 0x3b:  /* Change directory */
1538             if (!SetCurrentDirectory32A(PTR_SEG_OFF_TO_LIN(
1539                                                 DS_reg(context),
1540                                                 DX_reg(context)
1541                                         ))
1542             ) {
1543                 SET_CFLAG(context);
1544                 AL_reg(context) = DOS_ExtendedError;
1545             }
1546             break;
1547         case 0x41:  /* Delete file */
1548             if (!DeleteFile32A(PTR_SEG_OFF_TO_LIN(
1549                                         DS_reg(context),
1550                                         DX_reg(context))
1551             )) {
1552                 SET_CFLAG(context);
1553                 AL_reg(context) = DOS_ExtendedError;
1554             }
1555             break;
1556         case 0x56:  /* Move (rename) file */
1557         default:
1558             fprintf( stderr, "Unimplemented int21 long file name function:\n");
1559             INT_BARF( context, 0x21 );
1560             SET_CFLAG(context);
1561             AL_reg(context) = 0;
1562             break;
1563         }
1564         break;
1565
1566     case 0x70: /* MS-DOS 7 (Windows95) - ??? (country-specific?)*/
1567     case 0x72: /* MS-DOS 7 (Windows95) - ??? */
1568     case 0x73: /* MS-DOS 7 (Windows95) - DRIVE LOCKING ??? */
1569         dprintf_int(stddeb,"int21: windows95 function AX %04x\n",
1570                     AX_reg(context));
1571         dprintf_int(stddeb, "        returning unimplemented\n");
1572         SET_CFLAG(context);
1573         AL_reg(context) = 0;
1574         break;
1575
1576     case 0xdc: /* CONNECTION SERVICES - GET CONNECTION NUMBER */
1577     case 0xea: /* NOVELL NETWARE - RETURN SHELL VERSION */
1578         break;
1579
1580     default:
1581         INT_BARF( context, 0x21 );
1582         break;
1583
1584     } /* END OF SWITCH */
1585
1586     if( bSetDOSExtendedError )          /* set general error condition */
1587     {
1588         AX_reg(context) = DOS_ExtendedError;
1589         SET_CFLAG(context);
1590     }
1591
1592     dprintf_int( stddeb, "ret21: AX=%04x BX=%04x CX=%04x DX=%04x "
1593                  "SI=%04x DI=%04x DS=%04x ES=%04x EFL=%08lx\n",
1594                  AX_reg(context), BX_reg(context), CX_reg(context),
1595                  DX_reg(context), SI_reg(context), DI_reg(context),
1596                  (WORD)DS_reg(context), (WORD)ES_reg(context),
1597                  EFL_reg(context));
1598 }
1599