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 BYTE *GetCurrentDTA(void)
  99 {
 100     TDB *pTask = (TDB *)GlobalLock16( GetCurrentTask() );
 101     return (BYTE *)PTR_SEG_TO_LIN( pTask->dta );
 102 }
 103
 104
 105 void ChopOffWhiteSpace(char *string)
 106 {
 107         int length;
 108
 109         for (length = strlen(string) ; length ; length--)
 110                 if (string[length] == ' ')
 111                         string[length] = '\0';
 112 }
 113
 114 void CreateBPB(int drive, BYTE *data)
 115 {
 116         if (drive > 1) {
 117                 setword(data, 512);
 118                 data[2] = 2;
 119                 setword(&data[3], 0);
 120                 data[5] = 2;
 121                 setword(&data[6], 240);
 122                 setword(&data[8], 64000);
 123                 data[0x0a] = 0xf8;
 124                 setword(&data[0x0b], 40);
 125                 setword(&data[0x0d], 56);
 126                 setword(&data[0x0f], 2);
 127                 setword(&data[0x11], 0);
 128                 setword(&data[0x1f], 800);
 129                 data[0x21] = 5;
 130                 setword(&data[0x22], 1);
 131         } else { /* 1.44mb */
 132                 setword(data, 512);
 133                 data[2] = 2;
 134                 setword(&data[3], 0);
 135                 data[5] = 2;
 136                 setword(&data[6], 240);
 137                 setword(&data[8], 2880);
 138                 data[0x0a] = 0xf8;
 139                 setword(&data[0x0b], 6);
 140                 setword(&data[0x0d], 18);
 141                 setword(&data[0x0f], 2);
 142                 setword(&data[0x11], 0);
 143                 setword(&data[0x1f], 80);
 144                 data[0x21] = 7;
 145                 setword(&data[0x22], 2);
 146         }
 147 }
 148
 149 static int INT21_GetFreeDiskSpace( CONTEXT *context )
 150 {
 151     DWORD cluster_sectors, sector_bytes, free_clusters, total_clusters;
 152     char root[] = "A:\\";
 153
 154     *root += DOS_GET_DRIVE( DL_reg(context) );
 155     if (!GetDiskFreeSpace32A( root, &cluster_sectors, &sector_bytes,
 156                               &free_clusters, &total_clusters )) return 0;
 157     AX_reg(context) = cluster_sectors;
 158     BX_reg(context) = free_clusters;
 159     CX_reg(context) = sector_bytes;
 160     DX_reg(context) = total_clusters;
 161     return 1;
 162 }
 163
 164 static int INT21_GetDriveAllocInfo( CONTEXT *context )
 165 {
 166     if (!INT21_GetFreeDiskSpace( context )) return 0;
 167     if (!heap && !INT21_CreateHeap()) return 0;
 168     heap->mediaID = 0xf0;
 169     DS_reg(context) = DosHeapHandle;
 170     BX_reg(context) = (int)&heap->mediaID - (int)heap;
 171     return 1;
 172 }
 173
 174 static void GetDrivePB( CONTEXT *context, int drive )
 175 {
 176         if(!DRIVE_IsValid(drive))
 177         {
 178             DOS_ERROR( ER_InvalidDrive, EC_MediaError, SA_Abort, EL_Disk );
 179             AX_reg(context) = 0x00ff;
 180         }
 181         else if (heap || INT21_CreateHeap())
 182         {
 183                 dprintf_int(stddeb, "int21: GetDrivePB not fully implemented.\n");
 184
 185                 /* FIXME: I have no idea what a lot of this information should
 186                  * say or whether it even really matters since we're not allowing
 187                  * direct block access.  However, some programs seem to depend on
 188                  * getting at least _something_ back from here.  The 'next' pointer
 189                  * does worry me, though.  Should we have a complete table of
 190                  * separate DPBs per drive?  Probably, but I'm lazy. :-)  -CH
 191                  */
 192                 heap->dpb.drive_num = heap->dpb.unit_num = drive; /*The same?*/
 193                 heap->dpb.sector_size = 512;
 194                 heap->dpb.high_sector = 1;
 195                 heap->dpb.shift = drive < 2 ? 0 : 6; /*6 for HD, 0 for floppy*/
 196                 heap->dpb.reserved = 0;
 197                 heap->dpb.num_FAT = 1;
 198                 heap->dpb.dir_entries = 2;
 199                 heap->dpb.first_data = 2;
 200                 heap->dpb.high_cluster = 64000;
 201                 heap->dpb.sectors_in_FAT = 1;
 202                 heap->dpb.start_dir = 1;
 203                 heap->dpb.driver_head = 0;
 204                 heap->dpb.media_ID = (drive > 1) ? 0xF8 : 0xF0;
 205                 heap->dpb.access_flag = 0;
 206                 heap->dpb.next = 0;
 207                 heap->dpb.free_search = 0;
 208                 heap->dpb.free_clusters = 0xFFFF;    /* unknown */
 209
 210                 AL_reg(context) = 0x00;
 211                 DS_reg(context) = SELECTOROF(dpbsegptr);
 212                 BX_reg(context) = OFFSETOF(dpbsegptr);
 213         }
 214 }
 215
 216
 217 static void ioctlGetDeviceInfo( CONTEXT *context )
 218 {
 219     int curr_drive;
 220     dprintf_int (stddeb, "int21: ioctl (%d, GetDeviceInfo)\n", BX_reg(context));
 221
 222     curr_drive = DRIVE_GetCurrentDrive();
 223     DX_reg(context) = 0x0140 + curr_drive + ((curr_drive > 1) ? 0x0800 : 0); /* no floppy */
 224     /* bits 0-5 are current drive
 225      * bit 6 - file has NOT been written..FIXME: correct?
 226      * bit 8 - generate int24 if no diskspace on write/ read past end of file
 227      * bit 11 - media not removable
 228      */
 229     RESET_CFLAG(context);
 230 }
 231
 232 static BOOL32 ioctlGenericBlkDevReq( CONTEXT *context )
 233 {
 234         BYTE *dataptr = PTR_SEG_OFF_TO_LIN(DS_reg(context), DX_reg(context));
 235         int drive = DOS_GET_DRIVE( BL_reg(context) );
 236
 237         if (!DRIVE_IsValid(drive))
 238         {
 239             DOS_ERROR( ER_FileNotFound, EC_NotFound, SA_Abort, EL_Disk );
 240             return TRUE;
 241         }
 242
 243         if (CH_reg(context) != 0x08)
 244         {
 245             INT_BARF( context, 0x21 );
 246             return FALSE;
 247         }
 248
 249         switch (CL_reg(context))
 250         {
 251                 case 0x4a: /* lock logical volume */
 252                         dprintf_int(stddeb,"int21: lock logical volume (%d) level %d mode %d\n",drive,BH_reg(context),DX_reg(context));
 253                         break;
 254
 255                 case 0x60: /* get device parameters */
 256                            /* used by w4wgrp's winfile */
 257                         memset(dataptr, 0, 0x26);
 258                         dataptr[0] = 0x04;
 259                         dataptr[6] = 0; /* media type */
 260                         if (drive > 1)
 261                         {
 262                                 dataptr[1] = 0x05; /* fixed disk */
 263                                 setword(&dataptr[2], 0x01); /* non removable */
 264                                 setword(&dataptr[4], 0x300); /* # of cylinders */
 265                         }
 266                         else
 267                         {
 268                                 dataptr[1] = 0x07; /* block dev, floppy */
 269                                 setword(&dataptr[2], 0x02); /* removable */
 270                                 setword(&dataptr[4], 80); /* # of cylinders */
 271                         }
 272                         CreateBPB(drive, &dataptr[7]);
 273                         RESET_CFLAG(context);
 274                         break;
 275
 276                 case 0x66:/*  get disk serial number */
 277                         {
 278                                 char    label[12],fsname[9],path[4];
 279                                 DWORD   serial;
 280
 281                                 strcpy(path,"x:\\");path[0]=drive+'A';
 282                                 GetVolumeInformation32A(
 283                                         path,label,12,&serial,NULL,NULL,fsname,9
 284                                 );
 285                                 *(WORD*)dataptr         = 0;
 286                                 memcpy(dataptr+2,&serial,4);
 287                                 memcpy(dataptr+6,label  ,11);
 288                                 memcpy(dataptr+17,fsname,8);
 289                         }
 290                         break;
 291
 292                 case 0x6a:
 293                         dprintf_int(stddeb,"int21: logical volume %d unlocked.\n",drive);
 294                         break;
 295
 296                 default:
 297                         INT_BARF( context, 0x21 );
 298         }
 299         return FALSE;
 300 }
 301
 302 static void INT21_GetSystemDate( CONTEXT *context )
 303 {
 304     SYSTEMTIME systime;
 305     GetLocalTime( &systime );
 306     CX_reg(context) = systime.wYear;
 307     DX_reg(context) = (systime.wMonth << 8) | systime.wDay;
 308     AX_reg(context) = systime.wDayOfWeek;
 309 }
 310
 311 static void INT21_GetSystemTime( CONTEXT *context )
 312 {
 313     SYSTEMTIME systime;
 314     GetLocalTime( &systime );
 315     CX_reg(context) = (systime.wHour << 8) | systime.wMinute;
 316     DX_reg(context) = (systime.wSecond << 8) | (systime.wMilliseconds / 10);
 317 }
 318
 319 static BOOL32 INT21_CreateFile( CONTEXT *context )
 320 {
 321     AX_reg(context) = _lcreat16( PTR_SEG_OFF_TO_LIN( DS_reg(context),
 322                                           DX_reg(context) ), CX_reg(context) );
 323     return (AX_reg(context) == (WORD)HFILE_ERROR16);
 324 }
 325
 326
 327 void OpenExistingFile( CONTEXT *context )
 328 {
 329     AX_reg(context) = _lopen16( PTR_SEG_OFF_TO_LIN(DS_reg(context),DX_reg(context)),
 330                               AL_reg(context) );
 331     if (AX_reg(context) == (WORD)HFILE_ERROR16)
 332     {
 333         AX_reg(context) = DOS_ExtendedError;
 334         SET_CFLAG(context);
 335     }
 336 #if 0
 337     {
 338         int handle;
 339         int mode;
 340         int lock;
 341
 342         switch (AX_reg(context) & 0x0070)
 343         {
 344           case 0x00:    /* compatability mode */
 345           case 0x40:    /* DENYNONE */
 346             lock = -1;
 347             break;
 348
 349           case 0x30:    /* DENYREAD */
 350             dprintf_int(stddeb,
 351               "OpenExistingFile (%s): DENYREAD changed to DENYALL\n",
 352               (char *)PTR_SEG_OFF_TO_LIN(DS_reg(context),DX_reg(context)));
 353           case 0x10:    /* DENYALL */
 354             lock = LOCK_EX;
 355             break;
 356
 357           case 0x20:    /* DENYWRITE */
 358             lock = LOCK_SH;
 359             break;
 360
 361           default:
 362             lock = -1;
 363         }
 364
 365         if (lock != -1)
 366         {
 367
 368           int result,retries=sharing_retries;
 369           {
 370 #if defined(__svr4__) || defined(_SCO_DS)
 371               printf("Should call flock and needs porting to lockf\n");
 372               result = 0;
 373               retries = 0;
 374 #else
 375             result = flock(handle, lock | LOCK_NB);
 376 #endif
 377             if ( retries && (!result) )
 378             {
 379               int i;
 380               for(i=0;i<32768*((int)sharing_pause);i++)
 381                   result++;                          /* stop the optimizer */
 382               for(i=0;i<32768*((int)sharing_pause);i++)
 383                   result--;
 384             }
 385           }
 386           while( (!result) && (!(retries--)) );
 387
 388           if(result)
 389           {
 390             errno_to_doserr();
 391             AX_reg(context) = DOS_ExtendedError;
 392             close(handle);
 393             SET_CFLAG(context);
 394             return;
 395           }
 396
 397         }
 398
 399         Error (0,0,0);
 400         AX_reg(context) = handle;
 401         RESET_CFLAG(context);
 402     }
 403 #endif
 404 }
 405
 406 static void CloseFile( CONTEXT *context )
 407 {
 408     if ((AX_reg(context) = _lclose16( BX_reg(context) )) != 0)
 409     {
 410         AX_reg(context) = DOS_ExtendedError;
 411         SET_CFLAG(context);
 412     }
 413 }
 414
 415 static BOOL32 INT21_ExtendedOpenCreateFile(CONTEXT *context )
 416 {
 417   BOOL32 bExtendedError = FALSE;
 418   BYTE action = DL_reg(context);
 419
 420   /* Shuffle arguments to call OpenExistingFile */
 421   AL_reg(context) = BL_reg(context);
 422   DX_reg(context) = SI_reg(context);
 423   /* BX,CX and DX should be preserved */
 424   OpenExistingFile(context);
 425
 426   if ((EFL_reg(context) & 0x0001) == 0) /* File exists */
 427   {
 428       UINT16    uReturnCX = 0;
 429
 430       /* Now decide what do do */
 431
 432       if ((action & 0x07) == 0)
 433       {
 434           BX_reg(context) = AX_reg(context);
 435           CloseFile(context);
 436           AX_reg(context) = 0x0050;     /*File exists*/
 437           SET_CFLAG(context);
 438           dprintf_int(stddeb, "int21: extended open/create: failed because file exists \n");
 439       }
 440       else if ((action & 0x07) == 2)
 441       {
 442         /* Truncate it, but first check if opened for write */
 443         if ((BL_reg(context) & 0x0007)== 0)
 444         {
 445                   BX_reg(context) = AX_reg(context);
 446                   CloseFile(context);
 447                   dprintf_int(stddeb, "int21: extended open/create: failed, trunc on ro file");
 448                   AX_reg(context) = 0x000C;     /*Access code invalid*/
 449                   SET_CFLAG(context);
 450         }
 451         else
 452         {
 453                 /* Shuffle arguments to call CloseFile while
 454                  * preserving BX and DX */
 455
 456                 dprintf_int(stddeb, "int21: extended open/create: Closing before truncate\n");
 457                 BX_reg(context) = AX_reg(context);
 458                 CloseFile(context);
 459                 if (EFL_reg(context) & 0x0001)
 460                 {
 461                    dprintf_int(stddeb, "int21: extended open/create: close before trunc failed");
 462                    AX_reg(context) = 0x0019;    /*Seek Error*/
 463                    CX_reg(context) = 0;
 464                    SET_CFLAG(context);
 465                 }
 466                 /* Shuffle arguments to call CreateFile */
 467
 468                 dprintf_int(stddeb, "int21: extended open/create: Truncating\n");
 469                 AL_reg(context) = BL_reg(context);
 470                 /* CX is still the same */
 471                 DX_reg(context) = SI_reg(context);
 472                 bExtendedError = INT21_CreateFile(context);
 473
 474                 if (EFL_reg(context) & 0x0001)  /*no file open, flags set */
 475                 {
 476                     dprintf_int(stddeb, "int21: extended open/create: trunc failed");
 477                     return bExtendedError;
 478                 }
 479                 uReturnCX = 0x3;
 480         }
 481       }
 482       else uReturnCX = 0x1;
 483
 484       CX_reg(context) = uReturnCX;
 485   }
 486   else /* file does not exist */
 487   {
 488       RESET_CFLAG(context); /* was set by OpenExistingFile(context) */
 489       if ((action & 0xF0)== 0)
 490       {
 491         CX_reg(context) = 0;
 492         SET_CFLAG(context);
 493         dprintf_int(stddeb, "int21: extended open/create: failed, file dosen't exist\n");
 494       }
 495       else
 496       {
 497         /* Shuffle arguments to call CreateFile */
 498         dprintf_int(stddeb, "int21: extended open/create: Creating\n");
 499         AL_reg(context) = BL_reg(context);
 500         /* CX should still be the same */
 501         DX_reg(context) = SI_reg(context);
 502         bExtendedError = INT21_CreateFile(context);
 503         if (EFL_reg(context) & 0x0001)  /*no file open, flags set */
 504         {
 505             dprintf_int(stddeb, "int21: extended open/create: create failed\n");
 506             return bExtendedError;
 507         }
 508         CX_reg(context) = 2;
 509       }
 510   }
 511
 512   return bExtendedError;
 513 }
 514
 515
 516 static BOOL32 INT21_ChangeDir( CONTEXT *context )
 517 {
 518     int drive;
 519     char *dirname = PTR_SEG_OFF_TO_LIN(DS_reg(context),DX_reg(context));
 520
 521     dprintf_int(stddeb,"int21: changedir %s\n", dirname);
 522     if (dirname[0] && (dirname[1] == ':'))
 523     {
 524         drive = toupper(dirname[0]) - 'A';
 525         dirname += 2;
 526     }
 527     else drive = DRIVE_GetCurrentDrive();
 528     return DRIVE_Chdir( drive, dirname );
 529 }
 530
 531
 532 static int INT21_FindFirst( CONTEXT *context )
 533 {
 534     char *p;
 535     const char *path;
 536     DOS_FULL_NAME full_name;
 537     FINDFILE_DTA *dta = (FINDFILE_DTA *)GetCurrentDTA();
 538
 539     path = (const char *)PTR_SEG_OFF_TO_LIN(DS_reg(context), DX_reg(context));
 540     dta->unixPath = NULL;
 541     if (!DOSFS_GetFullName( path, FALSE, &full_name ))
 542     {
 543         AX_reg(context) = DOS_ExtendedError;
 544         SET_CFLAG(context);
 545         return 0;
 546     }
 547     dta->unixPath = xstrdup( full_name.long_name );
 548     p = strrchr( dta->unixPath, '/' );
 549     *p = '\0';
 550
 551     /* Note: terminating NULL in dta->mask overwrites dta->search_attr
 552      *       (doesn't matter as it is set below anyway)
 553      */
 554     if (!DOSFS_ToDosFCBFormat( p + 1, dta->mask ))
 555     {
 556         free( dta->unixPath );
 557         dta->unixPath = NULL;
 558         DOS_ERROR( ER_FileNotFound, EC_NotFound, SA_Abort, EL_Disk );
 559         AX_reg(context) = ER_FileNotFound;
 560         SET_CFLAG(context);
 561         return 0;
 562     }
 563     dta->drive = (path[0] && (path[1] == ':')) ? toupper(path[0]) - 'A'
 564                                                : DRIVE_GetCurrentDrive();
 565     dta->count = 0;
 566     dta->search_attr = CL_reg(context);
 567     return 1;
 568 }
 569
 570
 571 static int INT21_FindNext( CONTEXT *context )
 572 {
 573     FINDFILE_DTA *dta = (FINDFILE_DTA *)GetCurrentDTA();
 574     WIN32_FIND_DATA32A entry;
 575     int count;
 576
 577     if (!dta->unixPath) return 0;
 578     if (!(count = DOSFS_FindNext( dta->unixPath, dta->mask, NULL, dta->drive,
 579                                   dta->search_attr, dta->count, &entry )))
 580     {
 581         free( dta->unixPath );
 582         dta->unixPath = NULL;
 583         return 0;
 584     }
 585     if ((int)dta->count + count > 0xffff)
 586     {
 587         fprintf( stderr, "Too many directory entries in %s\n", dta->unixPath );
 588         free( dta->unixPath );
 589         dta->unixPath = NULL;
 590         return 0;
 591     }
 592     dta->count += count;
 593     dta->fileattr = entry.dwFileAttributes;
 594     dta->filesize = entry.nFileSizeLow;
 595     FileTimeToDosDateTime( &entry.ftLastWriteTime,
 596                            &dta->filedate, &dta->filetime );
 597     strcpy( dta->filename, entry.cAlternateFileName );
 598     return 1;
 599 }
 600
 601
 602 static BOOL32 INT21_CreateTempFile( CONTEXT *context )
 603 {
 604     static int counter = 0;
 605     char *name = PTR_SEG_OFF_TO_LIN( DS_reg(context), DX_reg(context) );
 606     char *p = name + strlen(name);
 607
 608     for (;;)
 609     {
 610         sprintf( p, "wine%04x.%03d", (int)getpid(), counter );
 611         counter = (counter + 1) % 1000;
 612
 613         if ((AX_reg(context) = _lcreat_uniq( name, 0 )) != (WORD)HFILE_ERROR16)
 614         {
 615             dprintf_int( stddeb, "INT21_CreateTempFile: created %s\n", name );
 616             return TRUE;
 617         }
 618         if (DOS_ExtendedError != ER_FileExists) return FALSE;
 619     }
 620 }
 621
 622
 623 static BOOL32 INT21_GetCurrentDirectory( CONTEXT *context )
 624 {
 625     int drive = DOS_GET_DRIVE( DL_reg(context) );
 626     char *ptr = (char *)PTR_SEG_OFF_TO_LIN( DS_reg(context), SI_reg(context) );
 627
 628     if (!DRIVE_IsValid(drive))
 629     {
 630         DOS_ERROR( ER_InvalidDrive, EC_NotFound, SA_Abort, EL_Disk );
 631         return FALSE;
 632     }
 633     lstrcpyn32A( ptr, DRIVE_GetDosCwd(drive), 64 );
 634     AX_reg(context) = 0x0100;                        /* success return code */
 635     return TRUE;
 636 }
 637
 638
 639 static int INT21_GetDiskSerialNumber( CONTEXT *context )
 640 {
 641     BYTE *dataptr = PTR_SEG_OFF_TO_LIN(DS_reg(context), DX_reg(context));
 642     int drive = DOS_GET_DRIVE( BL_reg(context) );
 643
 644     if (!DRIVE_IsValid(drive))
 645     {
 646         DOS_ERROR( ER_InvalidDrive, EC_NotFound, SA_Abort, EL_Disk );
 647         return 0;
 648     }
 649
 650     *(WORD *)dataptr = 0;
 651     *(DWORD *)(dataptr + 2) = DRIVE_GetSerialNumber( drive );
 652     memcpy( dataptr + 6, DRIVE_GetLabel( drive ), 11 );
 653     strncpy(dataptr + 0x11, "FAT16   ", 8);
 654     return 1;
 655 }
 656
 657
 658 static int INT21_SetDiskSerialNumber( CONTEXT *context )
 659 {
 660     BYTE *dataptr = PTR_SEG_OFF_TO_LIN(DS_reg(context), DX_reg(context));
 661     int drive = DOS_GET_DRIVE( BL_reg(context) );
 662
 663     if (!DRIVE_IsValid(drive))
 664     {
 665         DOS_ERROR( ER_InvalidDrive, EC_NotFound, SA_Abort, EL_Disk );
 666         return 0;
 667     }
 668
 669     DRIVE_SetSerialNumber( drive, *(DWORD *)(dataptr + 2) );
 670     return 1;
 671 }
 672
 673
 674 /* microsoft's programmers should be shot for using CP/M style int21
 675    calls in Windows for Workgroup's winfile.exe */
 676
 677 static int INT21_FindFirstFCB( CONTEXT *context )
 678 {
 679     BYTE *fcb = (BYTE *)PTR_SEG_OFF_TO_LIN(DS_reg(context), DX_reg(context));
 680     FINDFILE_FCB *pFCB;
 681     LPCSTR root, cwd;
 682     int drive;
 683
 684     if (*fcb == 0xff) pFCB = (FINDFILE_FCB *)(fcb + 7);
 685     else pFCB = (FINDFILE_FCB *)fcb;
 686     drive = DOS_GET_DRIVE( pFCB->drive );
 687     root = DRIVE_GetRoot( drive );
 688     cwd  = DRIVE_GetUnixCwd( drive );
 689     pFCB->unixPath = HeapAlloc( SystemHeap, 0, strlen(root)+strlen(cwd)+2 );
 690     if (!pFCB->unixPath) return 0;
 691     strcpy( pFCB->unixPath, root );
 692     strcat( pFCB->unixPath, "/" );
 693     strcat( pFCB->unixPath, cwd );
 694     pFCB->count = 0;
 695     return 1;
 696 }
 697
 698
 699 static int INT21_FindNextFCB( CONTEXT *context )
 700 {
 701     BYTE *fcb = (BYTE *)PTR_SEG_OFF_TO_LIN(DS_reg(context), DX_reg(context));
 702     FINDFILE_FCB *pFCB;
 703     DOS_DIRENTRY_LAYOUT *pResult = (DOS_DIRENTRY_LAYOUT *)GetCurrentDTA();
 704     WIN32_FIND_DATA32A entry;
 705     BYTE attr;
 706     int count;
 707
 708     if (*fcb == 0xff)
 709     {
 710         attr = fcb[6];
 711         pFCB = (FINDFILE_FCB *)(fcb + 7);
 712     }
 713     else
 714     {
 715         attr = 0;
 716         pFCB = (FINDFILE_FCB *)fcb;
 717     }
 718
 719     if (!pFCB->unixPath) return 0;
 720     if (!(count = DOSFS_FindNext( pFCB->unixPath, pFCB->filename, NULL,
 721                                   DOS_GET_DRIVE( pFCB->drive ), attr,
 722                                   pFCB->count, &entry )))
 723     {
 724         HeapFree( SystemHeap, 0, pFCB->unixPath );
 725         pFCB->unixPath = NULL;
 726         return 0;
 727     }
 728     pFCB->count += count;
 729
 730     pResult->fileattr = entry.dwFileAttributes;
 731     pResult->cluster  = 0;  /* what else? */
 732     pResult->filesize = entry.nFileSizeLow;
 733     memset( pResult->reserved, 0, sizeof(pResult->reserved) );
 734     FileTimeToDosDateTime( &entry.ftLastWriteTime,
 735                            &pResult->filedate, &pResult->filetime );
 736
 737     /* Convert file name to FCB format */
 738
 739     memset( pResult->filename, ' ', sizeof(pResult->filename) );
 740     if (!strcmp( entry.cAlternateFileName, "." )) pResult->filename[0] = '.';
 741     else if (!strcmp( entry.cAlternateFileName, ".." ))
 742         pResult->filename[0] = pResult->filename[1] = '.';
 743     else
 744     {
 745         char *p = strrchr( entry.cAlternateFileName, '.' );
 746         if (p && p[1] && (p != entry.cAlternateFileName))
 747         {
 748             memcpy( pResult->filename, entry.cAlternateFileName,
 749                     MIN( (p - entry.cAlternateFileName), 8 ) );
 750             memcpy( pResult->filename + 8, p + 1, MIN( strlen(p), 3 ) );
 751         }
 752         else
 753             memcpy( pResult->filename, entry.cAlternateFileName,
 754                     MIN( strlen(entry.cAlternateFileName), 8 ) );
 755     }
 756     return 1;
 757 }
 758
 759
 760 static void DeleteFileFCB( CONTEXT *context )
 761 {
 762     fprintf( stderr, "DeleteFileFCB: not implemented yet\n" );
 763 #if 0
 764         BYTE *fcb = PTR_SEG_OFF_TO_LIN(DS_reg(context), DX_reg(context));
 765         struct dosdirent *dp;
 766         char temp[256], *ptr;
 767         int drive = DOS_GET_DRIVE( *fcb );
 768
 769         DumpFCB( fcb );
 770
 771         temp[0] = '\\';
 772         strcpy(temp+1, DRIVE_GetDosCwd(drive));
 773         strcat(temp, "\\");
 774         strncat(temp, fcb + 1, 8);
 775         ChopOffWhiteSpace(temp);
 776         strncat(temp, fcb + 9, 3);
 777         ChopOffWhiteSpace(temp);
 778
 779         if ((dp = DOS_opendir(temp)) == NULL) {
 780                 Error(InvalidDrive, EC_MediaError , EL_Disk);
 781                 AX_reg(context) = 0xff;
 782                 return;
 783         }
 784
 785         temp[0] = '\\';
 786         strcpy(temp+1, DRIVE_GetDosCwd(drive) );
 787         strcat(temp, "\\");
 788
 789         ptr = temp + strlen(temp);
 790
 791         while (DOS_readdir(dp) != NULL)
 792         {
 793                 strcpy(ptr, dp->filename);
 794                 dprintf_int(stddeb, "int21: delete file %s\n", temp);
 795                 /* unlink(DOS_GetUnixFileName(temp)); */
 796         }
 797         DOS_closedir(dp);
 798         AX_reg(context) = 0;
 799 #endif
 800 }
 801
 802 static void RenameFileFCB( CONTEXT *context )
 803 {
 804     fprintf( stderr, "RenameFileFCB: not implemented yet\n" );
 805 #if 0
 806         BYTE *fcb = PTR_SEG_OFF_TO_LIN(DS_reg(context), DX_reg(context));
 807         struct dosdirent *dp;
 808         char temp[256], oldname[256], newname[256], *oldnameptr, *newnameptr;
 809         int drive = DOS_GET_DRIVE( *fcb );
 810
 811         DumpFCB( fcb );
 812
 813         temp[0] = '\\';
 814         strcpy(temp+1, DRIVE_GetDosCwd(drive) );
 815         strcat(temp, "\\");
 816         strncat(temp, fcb + 1, 8);
 817         ChopOffWhiteSpace(temp);
 818         strncat(temp, fcb + 9, 3);
 819         ChopOffWhiteSpace(temp);
 820
 821         if ((dp = DOS_opendir(temp)) == NULL) {
 822                 Error(InvalidDrive, EC_MediaError , EL_Disk);
 823                 AX_reg(context) = 0xff;
 824                 return;
 825         }
 826
 827         oldname[0] = '\\';
 828         strcpy(oldname+1, DRIVE_GetDosCwd(drive) );
 829         strcat(oldname, "\\");
 830         strcpy( newname, oldname );
 831         oldnameptr = oldname + strlen(oldname);
 832         newnameptr = newname + strlen(newname);
 833
 834         while (DOS_readdir(dp) != NULL)
 835         {
 836                 strcpy(oldnameptr, dp->filename);
 837                 strcpy(newnameptr, fcb + 1);
 838                 dprintf_int(stddeb, "int21: renamefile %s -> %s\n",
 839                         oldname, newname);
 840         }
 841         DOS_closedir(dp);
 842         AX_reg(context) = 0;
 843 #endif
 844 }
 845
 846
 847
 848 static void fLock( CONTEXT * context )
 849 {
 850
 851     switch ( AX_reg(context) & 0xff )
 852     {
 853         case 0x00: /* LOCK */
 854           if (!LockFile(BX_reg(context),
 855                         MAKELONG(DX_reg(context),CX_reg(context)), 0,
 856                         MAKELONG(DI_reg(context),SI_reg(context)), 0)) {
 857             AX_reg(context) = DOS_ExtendedError;
 858             SET_CFLAG(context);
 859           }
 860           break;
 861
 862         case 0x01: /* UNLOCK */
 863           if (!UnlockFile(BX_reg(context),
 864                           MAKELONG(DX_reg(context),CX_reg(context)), 0,
 865                           MAKELONG(DI_reg(context),SI_reg(context)), 0)) {
 866             AX_reg(context) = DOS_ExtendedError;
 867             SET_CFLAG(context);
 868           }
 869           return;
 870         default:
 871           AX_reg(context) = 0x0001;
 872           SET_CFLAG(context);
 873           return;
 874      }
 875 }
 876
 877
 878 extern void LOCAL_PrintHeap (WORD ds);
 879
 880 /***********************************************************************
 881  *           DOS3Call  (KERNEL.102)
 882  */
 883 void DOS3Call( CONTEXT *context )
 884 {
 885     BOOL32      bSetDOSExtendedError = FALSE;
 886
 887     dprintf_int( stddeb, "int21: AX=%04x BX=%04x CX=%04x DX=%04x "
 888                  "SI=%04x DI=%04x DS=%04x ES=%04x EFL=%08lx\n",
 889                  AX_reg(context), BX_reg(context), CX_reg(context),
 890                  DX_reg(context), SI_reg(context), DI_reg(context),
 891                  (WORD)DS_reg(context), (WORD)ES_reg(context),
 892                  EFL_reg(context) );
 893
 894     if (AH_reg(context) == 0x59)  /* Get extended error info */
 895     {
 896         AX_reg(context) = DOS_ExtendedError;
 897         BH_reg(context) = DOS_ErrorClass;
 898         BL_reg(context) = DOS_ErrorAction;
 899         CH_reg(context) = DOS_ErrorLocus;
 900         return;
 901     }
 902
 903     DOS_ERROR( 0, 0, 0, 0 );
 904     RESET_CFLAG(context);  /* Not sure if this is a good idea */
 905
 906     switch(AH_reg(context))
 907     {
 908     case 0x00: /* TERMINATE PROGRAM */
 909         TASK_KillCurrentTask( 0 );
 910         break;
 911
 912     case 0x01: /* READ CHARACTER FROM STANDARD INPUT, WITH ECHO */
 913     case 0x02: /* WRITE CHARACTER TO STANDARD OUTPUT */
 914     case 0x03: /* READ CHARACTER FROM STDAUX  */
 915     case 0x04: /* WRITE CHARACTER TO STDAUX */
 916     case 0x05: /* WRITE CHARACTER TO PRINTER */
 917     case 0x06: /* DIRECT CONSOLE IN/OUTPUT */
 918     case 0x07: /* DIRECT CHARACTER INPUT, WITHOUT ECHO */
 919     case 0x08: /* CHARACTER INPUT WITHOUT ECHO */
 920     case 0x09: /* WRITE STRING TO STANDARD OUTPUT */
 921     case 0x0a: /* BUFFERED INPUT */
 922     case 0x0b: /* GET STDIN STATUS */
 923     case 0x0c: /* FLUSH BUFFER AND READ STANDARD INPUT */
 924     case 0x0f: /* OPEN FILE USING FCB */
 925     case 0x10: /* CLOSE FILE USING FCB */
 926     case 0x14: /* SEQUENTIAL READ FROM FCB FILE */
 927     case 0x15: /* SEQUENTIAL WRITE TO FCB FILE */
 928     case 0x16: /* CREATE OR TRUNCATE FILE USING FCB */
 929     case 0x21: /* READ RANDOM RECORD FROM FCB FILE */
 930     case 0x22: /* WRITE RANDOM RECORD TO FCB FILE */
 931     case 0x23: /* GET FILE SIZE FOR FCB */
 932     case 0x24: /* SET RANDOM RECORD NUMBER FOR FCB */
 933     case 0x26: /* CREATE NEW PROGRAM SEGMENT PREFIX */
 934     case 0x27: /* RANDOM BLOCK READ FROM FCB FILE */
 935     case 0x28: /* RANDOM BLOCK WRITE TO FCB FILE */
 936     case 0x29: /* PARSE FILENAME INTO FCB */
 937     case 0x2e: /* SET VERIFY FLAG */
 938     case 0x37: /* "SWITCHAR" - GET SWITCH CHARACTER
 939                   "SWITCHAR" - SET SWITCH CHARACTER
 940                   "AVAILDEV" - SPECIFY \DEV\ PREFIX USE */
 941     case 0x54: /* GET VERIFY FLAG */
 942         INT_BARF( context, 0x21 );
 943         break;
 944
 945     case 0x18: /* NULL FUNCTIONS FOR CP/M COMPATIBILITY */
 946     case 0x1d:
 947     case 0x1e:
 948     case 0x20:
 949     case 0x6b: /* NULL FUNCTION */
 950         AL_reg(context) = 0;
 951         break;
 952
 953     case 0x5c: /* "FLOCK" - RECORD LOCKING */
 954         fLock(context);
 955         break;
 956
 957     case 0x0d: /* DISK BUFFER FLUSH */
 958         RESET_CFLAG(context); /* dos 6+ only */
 959         break;
 960
 961     case 0x0e: /* SELECT DEFAULT DRIVE */
 962         DRIVE_SetCurrentDrive( DL_reg(context) );
 963         AL_reg(context) = MAX_DOS_DRIVES;
 964         break;
 965
 966     case 0x11: /* FIND FIRST MATCHING FILE USING FCB */
 967         if (!INT21_FindFirstFCB(context))
 968         {
 969             AL_reg(context) = 0xff;
 970             break;
 971         }
 972         /* else fall through */
 973
 974     case 0x12: /* FIND NEXT MATCHING FILE USING FCB */
 975         AL_reg(context) = INT21_FindNextFCB(context) ? 0x00 : 0xff;
 976         break;
 977
 978     case 0x13: /* DELETE FILE USING FCB */
 979         DeleteFileFCB(context);
 980         break;
 981
 982     case 0x17: /* RENAME FILE USING FCB */
 983         RenameFileFCB(context);
 984         break;
 985
 986     case 0x19: /* GET CURRENT DEFAULT DRIVE */
 987         AL_reg(context) = DRIVE_GetCurrentDrive();
 988         break;
 989
 990     case 0x1a: /* SET DISK TRANSFER AREA ADDRESS */
 991         {
 992             TDB *pTask = (TDB *)GlobalLock16( GetCurrentTask() );
 993             pTask->dta = PTR_SEG_OFF_TO_SEGPTR(DS_reg(context),DX_reg(context));
 994             dprintf_int(stddeb, "int21: Set DTA: %08lx\n", pTask->dta);
 995         }
 996         break;
 997
 998     case 0x1b: /* GET ALLOCATION INFORMATION FOR DEFAULT DRIVE */
 999         DL_reg(context) = 0;
1000         if (!INT21_GetDriveAllocInfo(context)) AX_reg(context) = 0xffff;
1001         break;
1002
1003     case 0x1c: /* GET ALLOCATION INFORMATION FOR SPECIFIC DRIVE */
1004         if (!INT21_GetDriveAllocInfo(context)) AX_reg(context) = 0xffff;
1005         break;
1006
1007     case 0x1f: /* GET DRIVE PARAMETER BLOCK FOR DEFAULT DRIVE */
1008         GetDrivePB(context, DRIVE_GetCurrentDrive());
1009         break;
1010
1011     case 0x25: /* SET INTERRUPT VECTOR */
1012         INT_SetHandler( AL_reg(context),
1013                         (FARPROC16)PTR_SEG_OFF_TO_SEGPTR( DS_reg(context),
1014                                                           DX_reg(context)));
1015         break;
1016
1017     case 0x2a: /* GET SYSTEM DATE */
1018         INT21_GetSystemDate(context);
1019         break;
1020
1021     case 0x2b: /* SET SYSTEM DATE */
1022         fprintf( stdnimp, "SetSystemDate(%02d/%02d/%04d): not allowed\n",
1023                  DL_reg(context), DH_reg(context), CX_reg(context) );
1024         AL_reg(context) = 0;  /* Let's pretend we succeeded */
1025         break;
1026
1027     case 0x2c: /* GET SYSTEM TIME */
1028         INT21_GetSystemTime(context);
1029         break;
1030
1031     case 0x2d: /* SET SYSTEM TIME */
1032         fprintf( stdnimp, "SetSystemTime(%02d:%02d:%02d.%02d): not allowed\n",
1033                  CH_reg(context), CL_reg(context),
1034                  DH_reg(context), DL_reg(context) );
1035         AL_reg(context) = 0;  /* Let's pretend we succeeded */
1036         break;
1037
1038     case 0x2f: /* GET DISK TRANSFER AREA ADDRESS */
1039         {
1040             TDB *pTask = (TDB *)GlobalLock16( GetCurrentTask() );
1041             ES_reg(context) = SELECTOROF( pTask->dta );
1042             BX_reg(context) = OFFSETOF( pTask->dta );
1043         }
1044         break;
1045
1046     case 0x30: /* GET DOS VERSION */
1047         AX_reg(context) = DOSVERSION;
1048         BX_reg(context) = 0x0012;     /* 0x123456 is Wine's serial # */
1049         CX_reg(context) = 0x3456;
1050         break;
1051
1052     case 0x31: /* TERMINATE AND STAY RESIDENT */
1053         INT_BARF( context, 0x21 );
1054         break;
1055
1056     case 0x32: /* GET DOS DRIVE PARAMETER BLOCK FOR SPECIFIC DRIVE */
1057         GetDrivePB(context, DOS_GET_DRIVE( DL_reg(context) ) );
1058         break;
1059
1060     case 0x33: /* MULTIPLEXED */
1061         switch (AL_reg(context))
1062         {
1063               case 0x00: /* GET CURRENT EXTENDED BREAK STATE */
1064                 DL_reg(context) = 0;
1065                 break;
1066
1067               case 0x01: /* SET EXTENDED BREAK STATE */
1068                 break;
1069
1070               case 0x02: /* GET AND SET EXTENDED CONTROL-BREAK CHECKING STATE*/
1071                 DL_reg(context) = 0;
1072                 break;
1073
1074               case 0x05: /* GET BOOT DRIVE */
1075                 DL_reg(context) = 3;
1076                 /* c: is Wine's bootdrive (a: is 1)*/
1077                 break;
1078
1079               case 0x06: /* GET TRUE VERSION NUMBER */
1080                 BX_reg(context) = DOSVERSION;
1081                 DX_reg(context) = 0x00;
1082                 break;
1083
1084               default:
1085                 INT_BARF( context, 0x21 );
1086                 break;
1087         }
1088         break;
1089
1090     case 0x34: /* GET ADDRESS OF INDOS FLAG */
1091         if (!heap) INT21_CreateHeap();
1092         ES_reg(context) = DosHeapHandle;
1093         BX_reg(context) = (int)&heap->InDosFlag - (int)heap;
1094         break;
1095
1096     case 0x35: /* GET INTERRUPT VECTOR */
1097         {
1098             FARPROC16 addr = INT_GetHandler( AL_reg(context) );
1099             ES_reg(context) = SELECTOROF(addr);
1100             BX_reg(context) = OFFSETOF(addr);
1101         }
1102         break;
1103
1104     case 0x36: /* GET FREE DISK SPACE */
1105         if (!INT21_GetFreeDiskSpace(context)) AX_reg(context) = 0xffff;
1106         break;
1107
1108     case 0x38: /* GET COUNTRY-SPECIFIC INFORMATION */
1109         AX_reg(context) = 0x02; /* no country support available */
1110         SET_CFLAG(context);
1111         break;
1112
1113     case 0x39: /* "MKDIR" - CREATE SUBDIRECTORY */
1114         bSetDOSExtendedError = (!CreateDirectory16( PTR_SEG_OFF_TO_LIN( DS_reg(context),
1115                                                            DX_reg(context) ), NULL));
1116         break;
1117
1118     case 0x3a: /* "RMDIR" - REMOVE SUBDIRECTORY */
1119         bSetDOSExtendedError = (!RemoveDirectory16( PTR_SEG_OFF_TO_LIN( DS_reg(context),
1120                                                                  DX_reg(context) )));
1121         break;
1122
1123     case 0x3b: /* "CHDIR" - SET CURRENT DIRECTORY */
1124         bSetDOSExtendedError = !INT21_ChangeDir(context);
1125         break;
1126
1127     case 0x3c: /* "CREAT" - CREATE OR TRUNCATE FILE */
1128         AX_reg(context) = _lcreat16( PTR_SEG_OFF_TO_LIN( DS_reg(context),
1129                                     DX_reg(context) ), CX_reg(context) );
1130         bSetDOSExtendedError = (AX_reg(context) == (WORD)HFILE_ERROR16);
1131         break;
1132
1133     case 0x3d: /* "OPEN" - OPEN EXISTING FILE */
1134         OpenExistingFile(context);
1135         break;
1136
1137     case 0x3e: /* "CLOSE" - CLOSE FILE */
1138         bSetDOSExtendedError = ((AX_reg(context) = _lclose16( BX_reg(context) )) != 0);
1139         break;
1140
1141     case 0x3f: /* "READ" - READ FROM FILE OR DEVICE */
1142         {
1143             LONG result = WIN16_hread( BX_reg(context),
1144                                        PTR_SEG_OFF_TO_SEGPTR( DS_reg(context),
1145                                                               DX_reg(context) ),
1146                                        CX_reg(context) );
1147             if (result == -1) bSetDOSExtendedError = TRUE;
1148             else AX_reg(context) = (WORD)result;
1149         }
1150         break;
1151
1152     case 0x40: /* "WRITE" - WRITE TO FILE OR DEVICE */
1153         {
1154             LONG result = _hwrite16( BX_reg(context),
1155                                      PTR_SEG_OFF_TO_LIN( DS_reg(context),
1156                                                          DX_reg(context) ),
1157                                      CX_reg(context) );
1158             if (result == -1) bSetDOSExtendedError = TRUE;
1159             else AX_reg(context) = (WORD)result;
1160         }
1161         break;
1162
1163     case 0x41: /* "UNLINK" - DELETE FILE */
1164         bSetDOSExtendedError = (!DeleteFile32A( PTR_SEG_OFF_TO_LIN( DS_reg(context),
1165                                                              DX_reg(context) )));
1166         break;
1167
1168     case 0x42: /* "LSEEK" - SET CURRENT FILE POSITION */
1169         {
1170             LONG status = _llseek16( BX_reg(context),
1171                                      MAKELONG(DX_reg(context),CX_reg(context)),
1172                                      AL_reg(context) );
1173             if (status == -1) bSetDOSExtendedError = TRUE;
1174             else
1175             {
1176                 AX_reg(context) = LOWORD(status);
1177                 DX_reg(context) = HIWORD(status);
1178             }
1179         }
1180         break;
1181
1182     case 0x43: /* FILE ATTRIBUTES */
1183         switch (AL_reg(context))
1184         {
1185         case 0x00:
1186             AX_reg(context) = (WORD)GetFileAttributes32A(
1187                                           PTR_SEG_OFF_TO_LIN(DS_reg(context),
1188                                                              DX_reg(context)));
1189             if (AX_reg(context) == 0xffff) bSetDOSExtendedError = TRUE;
1190             else CX_reg(context) = AX_reg(context);
1191             break;
1192
1193         case 0x01:
1194             bSetDOSExtendedError =
1195                 (!SetFileAttributes32A( PTR_SEG_OFF_TO_LIN(DS_reg(context),
1196                                                            DX_reg(context)),
1197                                                            CX_reg(context) ));
1198             break;
1199         }
1200         break;
1201
1202     case 0x44: /* IOCTL */
1203         switch (AL_reg(context))
1204         {
1205         case 0x00:
1206             ioctlGetDeviceInfo(context);
1207             break;
1208
1209         case 0x01:
1210             break;
1211         case 0x05:{     /* IOCTL - WRITE TO BLOCK DEVICE CONTROL CHANNEL */
1212             BYTE *dataptr = PTR_SEG_OFF_TO_LIN(DS_reg(context),DX_reg(context));
1213             int i;
1214             int drive = DOS_GET_DRIVE(BL_reg(context));
1215
1216             fprintf(stdnimp,"int21: program tried to write to block device control channel of drive %d:\n",drive);
1217             for (i=0;i<CX_reg(context);i++)
1218                 fprintf(stdnimp,"%02x ",dataptr[i]);
1219             fprintf(stdnimp,"\n");
1220             AX_reg(context)=CX_reg(context);
1221             break;
1222         }
1223         case 0x08:   /* Check if drive is removable. */
1224             switch(GetDriveType16( DOS_GET_DRIVE( BL_reg(context) )))
1225             {
1226             case DRIVE_CANNOTDETERMINE:
1227                 DOS_ERROR( ER_InvalidDrive, EC_NotFound, SA_Abort, EL_Disk );
1228                 AX_reg(context) = ER_InvalidDrive;
1229                 SET_CFLAG(context);
1230                 break;
1231             case DRIVE_REMOVABLE:
1232                 AX_reg(context) = 0;      /* removable */
1233                 break;
1234             default:
1235                 AX_reg(context) = 1;   /* not removable */
1236                 break;
1237             }
1238             break;
1239
1240         case 0x09:   /* CHECK IF BLOCK DEVICE REMOTE */
1241             switch(GetDriveType16( DOS_GET_DRIVE( BL_reg(context) )))
1242             {
1243             case DRIVE_CANNOTDETERMINE:
1244                 DOS_ERROR( ER_InvalidDrive, EC_NotFound, SA_Abort, EL_Disk );
1245                 AX_reg(context) = ER_InvalidDrive;
1246                 SET_CFLAG(context);
1247                 break;
1248             case DRIVE_REMOTE:
1249                 DX_reg(context) = (1<<9) | (1<<12);  /* remote */
1250                 break;
1251             default:
1252                 DX_reg(context) = 0;  /* FIXME: use driver attr here */
1253                 break;
1254             }
1255             break;
1256
1257         case 0x0a: /* check if handle (BX) is remote */
1258             /* returns DX, bit 15 set if remote, bit 14 set if date/time
1259              * not set on close
1260              */
1261             DX_reg(context) = 0;
1262             break;
1263
1264         case 0x0b:   /* SET SHARING RETRY COUNT */
1265             if (!CX_reg(context))
1266             {
1267                 AX_reg(context) = 1;
1268                 SET_CFLAG(context);
1269                 break;
1270             }
1271             sharing_pause = CX_reg(context);
1272             if (!DX_reg(context))
1273                 sharing_retries = DX_reg(context);
1274             RESET_CFLAG(context);
1275             break;
1276
1277         case 0x0d:
1278             bSetDOSExtendedError = ioctlGenericBlkDevReq(context);
1279             break;
1280
1281         case 0x0e: /* get logical drive mapping */
1282             AL_reg(context) = 0; /* drive has no mapping */
1283             break;
1284
1285         case 0x0F:   /* Set logical drive mapping */
1286             /* FIXME: Not implemented at the moment, always returns error
1287              */
1288             INT_BARF( context, 0x21 );
1289             AX_reg(context) = 0x0001; /* invalid function */
1290             SET_CFLAG(context);
1291             break;
1292
1293         default:
1294             INT_BARF( context, 0x21 );
1295             break;
1296         }
1297         break;
1298
1299     case 0x45: /* "DUP" - DUPLICATE FILE HANDLE */
1300         bSetDOSExtendedError = ((AX_reg(context) = FILE_Dup(BX_reg(context))) == (WORD)HFILE_ERROR16);
1301         break;
1302
1303     case 0x46: /* "DUP2", "FORCEDUP" - FORCE DUPLICATE FILE HANDLE */
1304         bSetDOSExtendedError = (FILE_Dup2( BX_reg(context), CX_reg(context) ) == HFILE_ERROR32);
1305         break;
1306
1307     case 0x47: /* "CWD" - GET CURRENT DIRECTORY */
1308         bSetDOSExtendedError = !INT21_GetCurrentDirectory(context);
1309         break;
1310
1311     case 0x48: /* ALLOCATE MEMORY */
1312     case 0x49: /* FREE MEMORY */
1313     case 0x4a: /* RESIZE MEMORY BLOCK */
1314         INT_BARF( context, 0x21 );
1315         break;
1316
1317     case 0x4b: /* "EXEC" - LOAD AND/OR EXECUTE PROGRAM */
1318         AX_reg(context) = WinExec16( PTR_SEG_OFF_TO_LIN( DS_reg(context),
1319                                                          DX_reg(context) ),
1320                                      SW_NORMAL );
1321         if (AX_reg(context) < 32) SET_CFLAG(context);
1322         break;
1323
1324     case 0x4c: /* "EXIT" - TERMINATE WITH RETURN CODE */
1325         TASK_KillCurrentTask( AL_reg(context) );
1326         break;
1327
1328     case 0x4d: /* GET RETURN CODE */
1329         AX_reg(context) = 0; /* normal exit */
1330         break;
1331
1332     case 0x4e: /* "FINDFIRST" - FIND FIRST MATCHING FILE */
1333         if (!INT21_FindFirst(context)) break;
1334         /* fall through */
1335
1336     case 0x4f: /* "FINDNEXT" - FIND NEXT MATCHING FILE */
1337         if (!INT21_FindNext(context))
1338         {
1339             DOS_ERROR( ER_NoMoreFiles, EC_MediaError, SA_Abort, EL_Disk );
1340             AX_reg(context) = ER_NoMoreFiles;
1341             SET_CFLAG(context);
1342         }
1343         break;
1344
1345     case 0x51: /* GET PSP ADDRESS */
1346     case 0x62: /* GET PSP ADDRESS */
1347         /* FIXME: should we return the original DOS PSP upon */
1348         /*        Windows startup ? */
1349         BX_reg(context) = GetCurrentPDB();
1350         break;
1351
1352     case 0x52: /* "SYSVARS" - GET LIST OF LISTS */
1353         ES_reg(context) = 0x0;
1354         BX_reg(context) = 0x0;
1355         INT_BARF( context, 0x21 );
1356         break;
1357
1358     case 0x56: /* "RENAME" - RENAME FILE */
1359         bSetDOSExtendedError =
1360                 (!MoveFile32A( PTR_SEG_OFF_TO_LIN(DS_reg(context),DX_reg(context)),
1361                                PTR_SEG_OFF_TO_LIN(ES_reg(context),DI_reg(context))));
1362         break;
1363
1364     case 0x57: /* FILE DATE AND TIME */
1365         switch (AL_reg(context))
1366         {
1367         case 0x00:  /* Get */
1368             {
1369                 FILETIME filetime;
1370                 if (!GetFileTime( BX_reg(context), NULL, NULL, &filetime ))
1371                      bSetDOSExtendedError = TRUE;
1372                 else FileTimeToDosDateTime( &filetime, &DX_reg(context),
1373                                             &CX_reg(context) );
1374             }
1375             break;
1376
1377         case 0x01:  /* Set */
1378             {
1379                 FILETIME filetime;
1380                 DosDateTimeToFileTime( DX_reg(context), CX_reg(context),
1381                                        &filetime );
1382                 bSetDOSExtendedError =
1383                         (!SetFileTime( BX_reg(context), NULL, NULL, &filetime ));
1384             }
1385             break;
1386         }
1387         break;
1388
1389     case 0x58: /* GET OR SET MEMORY/UMB ALLOCATION STRATEGY */
1390         switch (AL_reg(context))
1391         {
1392         case 0x00:
1393             AX_reg(context) = 1;
1394             break;
1395         case 0x02:
1396             AX_reg(context) = 0;
1397             break;
1398         case 0x01:
1399         case 0x03:
1400             break;
1401         }
1402         RESET_CFLAG(context);
1403         break;
1404
1405     case 0x5a: /* CREATE TEMPORARY FILE */
1406         bSetDOSExtendedError = !INT21_CreateTempFile(context);
1407         break;
1408
1409     case 0x5b: /* CREATE NEW FILE */
1410         bSetDOSExtendedError = ((AX_reg(context) =
1411                 _lcreat_uniq( PTR_SEG_OFF_TO_LIN(DS_reg(context),DX_reg(context)), 0 ))
1412                                                                 == (WORD)HFILE_ERROR16);
1413         break;
1414
1415     case 0x5d: /* NETWORK */
1416     case 0x5e:
1417         /* network software not installed */
1418         DOS_ERROR( ER_NoNetwork, EC_NotFound, SA_Abort, EL_Network );
1419         bSetDOSExtendedError = TRUE;
1420         break;
1421
1422     case 0x5f: /* NETWORK */
1423         switch (AL_reg(context))
1424         {
1425         case 0x07: /* ENABLE DRIVE */
1426             if (!DRIVE_Enable( DL_reg(context) ))
1427             {
1428                 DOS_ERROR( ER_InvalidDrive, EC_MediaError, SA_Abort, EL_Disk );
1429                 bSetDOSExtendedError = TRUE;
1430             }
1431             break;
1432
1433         case 0x08: /* DISABLE DRIVE */
1434             if (!DRIVE_Disable( DL_reg(context) ))
1435             {
1436                 DOS_ERROR( ER_InvalidDrive, EC_MediaError, SA_Abort, EL_Disk );
1437                 bSetDOSExtendedError = TRUE;
1438             }
1439             break;
1440
1441         default:
1442             /* network software not installed */
1443             DOS_ERROR( ER_NoNetwork, EC_NotFound, SA_Abort, EL_Network );
1444             bSetDOSExtendedError = TRUE;
1445             break;
1446         }
1447         break;
1448
1449     case 0x60: /* "TRUENAME" - CANONICALIZE FILENAME OR PATH */
1450         {
1451             if (!GetFullPathName32A( PTR_SEG_OFF_TO_LIN(DS_reg(context),
1452                                                         SI_reg(context)), 128,
1453                                      PTR_SEG_OFF_TO_LIN(ES_reg(context),
1454                                                         DI_reg(context)),NULL))
1455                 bSetDOSExtendedError = TRUE;
1456             else AX_reg(context) = 0;
1457         }
1458         break;
1459
1460     case 0x61: /* UNUSED */
1461     case 0x63: /* UNUSED */
1462     case 0x64: /* OS/2 DOS BOX */
1463         INT_BARF( context, 0x21 );
1464         SET_CFLAG(context);
1465         break;
1466
1467     case 0x65:{/* GET EXTENDED COUNTRY INFORMATION */
1468         extern WORD WINE_LanguageId;
1469         BYTE    *dataptr=PTR_SEG_OFF_TO_LIN(ES_reg(context),DI_reg(context));;
1470         switch (AL_reg(context)) {
1471         case 0x01:
1472             dataptr[0] = 0x1;
1473             *(WORD*)(dataptr+1) = 41;
1474             *(WORD*)(dataptr+3) = WINE_LanguageId;
1475             *(WORD*)(dataptr+5) = CodePage;
1476             break;
1477         case 0x06:
1478             dataptr[0] = 0x06;
1479             *(DWORD*)(dataptr+1) = MAKELONG(DOSMEM_CollateTable & 0xFFFF,DOSMEM_AllocSelector(DOSMEM_CollateTable>>16));
1480             CX_reg(context)         = 258;/*FIXME: size of table?*/
1481             break;
1482         default:
1483             INT_BARF( context, 0x21 );
1484             SET_CFLAG(context);
1485             break;
1486         }
1487         break;
1488     }
1489     case 0x66: /* GLOBAL CODE PAGE TABLE */
1490         switch (AL_reg(context))
1491         {
1492         case 0x01:
1493             DX_reg(context) = BX_reg(context) = CodePage;
1494             RESET_CFLAG(context);
1495             break;
1496         case 0x02:
1497             CodePage = BX_reg(context);
1498             RESET_CFLAG(context);
1499             break;
1500         }
1501         break;
1502
1503     case 0x67: /* SET HANDLE COUNT */
1504         SetHandleCount16( BX_reg(context) );
1505         if (DOS_ExtendedError) bSetDOSExtendedError = TRUE;
1506         break;
1507
1508     case 0x68: /* "FFLUSH" - COMMIT FILE */
1509     case 0x6a: /* COMMIT FILE */
1510         bSetDOSExtendedError = (!FlushFileBuffers( BX_reg(context) ));
1511         break;
1512
1513     case 0x69: /* DISK SERIAL NUMBER */
1514         switch (AL_reg(context))
1515         {
1516         case 0x00:
1517             if (!INT21_GetDiskSerialNumber(context)) bSetDOSExtendedError = TRUE;
1518             else AX_reg(context) = 0;
1519             break;
1520
1521         case 0x01:
1522             if (!INT21_SetDiskSerialNumber(context)) bSetDOSExtendedError = TRUE;
1523             else AX_reg(context) = 1;
1524             break;
1525         }
1526         break;
1527
1528     case 0x6C: /* Extended Open/Create*/
1529         bSetDOSExtendedError = INT21_ExtendedOpenCreateFile(context);
1530         break;
1531
1532     case 0x71: /* MS-DOS 7 (Windows95) - LONG FILENAME FUNCTIONS */
1533         switch(AL_reg(context))
1534         {
1535         case 0x39:  /* Create directory */
1536             bSetDOSExtendedError = (!CreateDirectory32A(
1537                                         PTR_SEG_OFF_TO_LIN( DS_reg(context),
1538                                                   DX_reg(context) ), NULL));
1539             break;
1540         case 0x3a:  /* Remove directory */
1541             bSetDOSExtendedError = (!RemoveDirectory32A(
1542                                         PTR_SEG_OFF_TO_LIN( DS_reg(context),
1543                                                         DX_reg(context) )));
1544             break;
1545         case 0x43:  /* Get/Set file attributes */
1546         switch (BL_reg(context))
1547         {
1548         case 0x00: /* Get file attributes */
1549             CX_reg(context) = (WORD)GetFileAttributes32A(
1550                                           PTR_SEG_OFF_TO_LIN(DS_reg(context),
1551                                                              DX_reg(context)));
1552             if (CX_reg(context) == 0xffff) bSetDOSExtendedError = TRUE;
1553             break;
1554         case 0x01:
1555             bSetDOSExtendedError = (!SetFileAttributes32A(
1556                                         PTR_SEG_OFF_TO_LIN(DS_reg(context),
1557                                                            DX_reg(context)),
1558                                         CX_reg(context)  ) );
1559             break;
1560         default:
1561           fprintf( stderr,
1562                    "Unimplemented int21 long file name function:\n");
1563           INT_BARF( context, 0x21 );
1564           SET_CFLAG(context);
1565           AL_reg(context) = 0;
1566           break;
1567         }
1568         break;
1569         case 0x47:  /* Get current directory */
1570             bSetDOSExtendedError = !INT21_GetCurrentDirectory(context);
1571             break;
1572
1573         case 0x4e:  /* Find first file */
1574             /* FIXME: use attributes in CX */
1575             if ((AX_reg(context) = FindFirstFile16(
1576                    PTR_SEG_OFF_TO_LIN(DS_reg(context),DX_reg(context)),
1577                    (WIN32_FIND_DATA32A *)PTR_SEG_OFF_TO_LIN(ES_reg(context),
1578                                                             DI_reg(context))))
1579                 == INVALID_HANDLE_VALUE16)
1580                 bSetDOSExtendedError = TRUE;
1581             break;
1582         case 0x4f:  /* Find next file */
1583             if (!FindNextFile16( BX_reg(context),
1584                     (WIN32_FIND_DATA32A *)PTR_SEG_OFF_TO_LIN(ES_reg(context),
1585                                                              DI_reg(context))))
1586                 bSetDOSExtendedError = TRUE;
1587             break;
1588         case 0xa1:  /* Find close */
1589             bSetDOSExtendedError = (!FindClose16( BX_reg(context) ));
1590             break;
1591         case 0xa0:
1592             break;
1593         case 0x60:
1594           switch(CL_reg(context))
1595           {
1596             case 0x02:  /*Get canonical long filename or path */
1597               if (!GetFullPathName32A
1598                   ( PTR_SEG_OFF_TO_LIN(DS_reg(context),
1599                                        SI_reg(context)), 128,
1600                     PTR_SEG_OFF_TO_LIN(ES_reg(context),
1601                                        DI_reg(context)),NULL))
1602                 bSetDOSExtendedError = TRUE;
1603               else AX_reg(context) = 0;
1604               break;
1605             default:
1606               fprintf( stderr,
1607                        "Unimplemented int21 long file name function:\n");
1608               INT_BARF( context, 0x21 );
1609               SET_CFLAG(context);
1610               AL_reg(context) = 0;
1611               break;
1612           }
1613             break;
1614         case 0x6c:  /* Create or open file */
1615           /* translate Dos 7 action to Dos 6 action */
1616             bSetDOSExtendedError = INT21_ExtendedOpenCreateFile(context);
1617             break;
1618
1619         case 0x3b:  /* Change directory */
1620             if (!SetCurrentDirectory32A(PTR_SEG_OFF_TO_LIN(
1621                                                 DS_reg(context),
1622                                                 DX_reg(context)
1623                                         ))
1624             ) {
1625                 SET_CFLAG(context);
1626                 AL_reg(context) = DOS_ExtendedError;
1627             }
1628             break;
1629         case 0x41:  /* Delete file */
1630         case 0x56:  /* Move (rename) file */
1631         default:
1632             fprintf( stderr, "Unimplemented int21 long file name function:\n");
1633             INT_BARF( context, 0x21 );
1634             SET_CFLAG(context);
1635             AL_reg(context) = 0;
1636             break;
1637         }
1638         break;
1639
1640     case 0x70: /* MS-DOS 7 (Windows95) - ??? (country-specific?)*/
1641     case 0x72: /* MS-DOS 7 (Windows95) - ??? */
1642     case 0x73: /* MS-DOS 7 (Windows95) - DRIVE LOCKING ??? */
1643         dprintf_int(stddeb,"int21: windows95 function AX %04x\n",
1644                     AX_reg(context));
1645         dprintf_int(stddeb, "        returning unimplemented\n");
1646         SET_CFLAG(context);
1647         AL_reg(context) = 0;
1648         break;
1649
1650     case 0xdc: /* CONNECTION SERVICES - GET CONNECTION NUMBER */
1651     case 0xea: /* NOVELL NETWARE - RETURN SHELL VERSION */
1652         break;
1653
1654     default:
1655         INT_BARF( context, 0x21 );
1656         break;
1657
1658     } /* END OF SWITCH */
1659
1660     if( bSetDOSExtendedError )          /* set general error condition */
1661     {
1662         AX_reg(context) = DOS_ExtendedError;
1663         SET_CFLAG(context);
1664     }
1665
1666     dprintf_int( stddeb, "ret21: AX=%04x BX=%04x CX=%04x DX=%04x "
1667                  "SI=%04x DI=%04x DS=%04x ES=%04x EFL=%08lx\n",
1668                  AX_reg(context), BX_reg(context), CX_reg(context),
1669                  DX_reg(context), SI_reg(context), DI_reg(context),
1670                  (WORD)DS_reg(context), (WORD)ES_reg(context),
1671                  EFL_reg(context));
1672 }
1673